CN210293959U

CN210293959U - Multi-connecting-rod loading device and microscope

Info

Publication number: CN210293959U
Application number: CN201920774050.3U
Authority: CN
Inventors: 张大庆
Original assignee: Pinghu Laidun Optical Instrument Manufacturing Co ltd
Current assignee: Pinghu Laidun Optical Instrument Manufacturing Co ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-04-10
Anticipated expiration: 2029-05-27

Abstract

The utility model relates to a many connecting rods loading device and microscope, include: the connecting rod assembly comprises a first fixing piece, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod and a second fixing piece which are sequentially connected in a rotating manner, the second connecting rod and the fourth connecting rod are arranged at intervals along a first direction, the second connecting rod and the fourth connecting rod extend along a second direction, and an included angle between the second direction and the first direction is larger than 0 degree; a first loading part and a second loading part respectively extending along the first direction; the first fixing piece or the third connecting rod can move along the first direction so as to drive the second connecting rod to drive the first loading part to move along the first direction; the second fixing piece or the third connecting rod can move along the first direction to drive the fourth connecting rod to drive the second loading part to move along the first direction. The utility model discloses a many connecting rods loading device loading efficiency promotes.

Description

Multi-connecting-rod loading device and microscope

Technical Field

The utility model relates to a microscope technical field, concretely relates to many connecting rods loading device and microscope.

Background

By hardness is meant the ability of a material to resist the penetration of a harder object into its surface. According to different test methods and application ranges, hardness units can be divided into Brinell hardness, Vickers hardness, Rockwell hardness, micro Vickers hardness and the like, different units have different test methods, and the method is suitable for materials or occasions with different characteristics.

For example, a vickers hardness tester is a measuring instrument for measuring the length of a diagonal line of an indentation of a material and calculating the hardness of the material by using a formula. The conventional vickers hardness is measured by a human eye observation microscope. The microscope is an optical instrument formed by one lens or a combination of a plurality of lenses, and is widely applied to the fields of medical health, biological detection, metallographic detection, integrated circuit detection and the like. The sample is typically placed on a stage and viewed by movement of the stage, e.g., in the X and Y directions.

For example, chinese patent publication No. CN204101806U discloses an automatic stage for microscope multi-sample, which provides an automatic stage capable of 2-dimensional movement, and the stage composed of a fixed stage and a movable stage is driven by 2 stepping motors respectively to form an automatic stage capable of X, Y-axis movement. The moving object table moves through the Y-axis lead screw motor, and the Y-axis lead screw motor pushes the moving object table to move back and forth; an X-axis lead screw motor on the movable table acts, and the X-axis motor pushes the slide support outer frame to move left and right.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a many connecting rods loading device, include: the connecting rod assembly comprises a first fixing piece, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod and a second fixing piece which are sequentially connected in a rotating manner, the second connecting rod and the fourth connecting rod are arranged at intervals along a first direction, the second connecting rod and the fourth connecting rod respectively extend along a second direction, and an included angle between the second direction and the first direction is larger than 0 degree; a first loading part and a second loading part respectively extending along the first direction; the first fixing piece or the third connecting rod can move along the first direction so as to drive the second connecting rod to drive the first loading part to move along the first direction; the second fixing piece or the third connecting rod can move along the first direction to drive the fourth connecting rod to drive the second loading part to move along the first direction.

Optionally, the first fixing part is rotationally connected with the first link around a first axis, the second link is rotationally connected with the third link around a second axis, the first axis is parallel to the second axis, the first axis is located in a first plane, the second axis is located in a second plane, and a point of action of the second link on the first loading part is located in a third plane;

the first plane, the second plane and the third plane all extend along the first direction, and along the second direction, the distance between the first plane and the third plane is a first distance, the distance between the second plane and the third plane is a second distance, and the first distance is greater than the second distance.

Optionally, the first distance is D1, the second distance is D2, 1/20 ≦ D2/D1 ≦ 1/3.

Optionally, the second fixing element is rotationally connected with the fifth connecting rod around a fourth axis, the third connecting rod is rotationally connected with the fourth connecting rod around a fifth axis, the fourth axis is parallel to the fifth axis, the fourth axis is located on a fourth plane, the fifth axis is located on a fifth plane, and a point of action of the fourth connecting rod on the second loading part is located on a sixth plane;

the fourth plane, the fifth plane and the sixth plane all extend along the first direction, and along the second direction, the distance between the fourth plane and the sixth plane is a third distance, the distance between the fifth plane and the sixth plane is a fourth distance, and the third distance is greater than the fourth distance.

Optionally, the third distance is D3, the fourth distance is D4, 1/20 ≦ D4/D3 ≦ 1/3.

Optionally, the method further comprises: the third fixing piece is connected with the third connecting rod and can move along the first direction to drive the fourth connecting rod to drive the third loading part to move along the first direction.

Optionally, in the first direction, the moving speed of the third loading part is greater than the moving speed of the first loading part.

Optionally, the third loading part and the second loading part can move synchronously along the first direction.

Optionally, the second fixing part or the third fixing part can move along the first direction to drive the fourth connecting rod to drive the second loading part and the third loading part to synchronously move along the first direction.

Optionally, in the first direction, the loading force of the first loading portion is greater than the loading force of the second loading portion.

Optionally, the third loading part and the first loading part are arranged in parallel; the second loading part is positioned in the first loading part and can move relative to the first loading part along the first direction.

Optionally, in the first direction, an end of the first loading portion facing the second link is longer than an end of the third loading portion facing the fourth link, and an end of the third loading portion facing away from the fourth link is longer than an end of the first loading portion facing away from the second link.

Optionally, the length of the third loading part is L1, and the length of the third loading part longer than the first loading part is L2, wherein 1/20 ≦ L2/L1 ≦ 1/18.

Optionally, an end of the third loading portion facing away from the fourth link is longer than an end of the second loading portion facing away from the second link.

Optionally, the length of the third loading part is L1, and the length of the third loading part longer than the second loading part is L3, wherein 1/20 ≦ L3/L1 ≦ 1/18.

Optionally, the method further comprises:

a first slider connected to the first loading portion, the first slider being located between the second link and the fifth link in the first direction;

and a first protrusion provided at a portion of the second link facing the fifth link, the first protrusion contacting the first slider, the first protrusion driving the first slider to move in the first direction when the first fixing member or the third link moves in the first direction.

Optionally, the first protrusion is in rolling contact with the first slider.

Optionally, a first rolling element is disposed on the first convex portion, the first rolling element is in rolling contact with the first slider, and the first rolling element is capable of rotating around a third axis, which is located on the third plane and parallel to the first axis.

Optionally, the first protrusion is near a rotational connection of the second link and the third link.

Optionally, a first force value sensor is arranged on the first sliding part and used for feeding back the loading force of the first loading part.

Optionally, the first slider and the second link are connected by a first elastic member.

Optionally, the method further comprises:

a second slider connected to the third loading portion, the fifth link being located between the second slider and the second link in the first direction;

and a second protrusion disposed on a portion of the fourth link facing away from the second link, the second protrusion contacting the second slider, and the second protrusion driving the second slider to move in the first direction when the second fixing member or the third link moves in the first direction.

Optionally, the second protrusion is in rolling contact with the second slider.

Optionally, a second rolling element is disposed on the second protrusion, the second rolling element being in rolling contact with the second slider, the second rolling element being rotatable about a sixth axis, the sixth axis being located in the third plane and parallel to the fourth axis.

Optionally, the second protrusion is close to a rotational connection of the third link and the fourth link.

Optionally, a second force value sensor is arranged on the second sliding member and used for feeding back the loading force of the second loading portion.

Optionally, along the second direction, one end of the second force value sensor is located in the first loading portion and can move along the first direction relative to the first loading portion, and the second loading portion is disposed on the second force value sensor.

Optionally, the second slider and the fourth link are connected by a second elastic member.

Optionally, the third link has a first portion, a second portion and a third portion connected to each other, wherein the first portion and the third portion are disposed at an interval along the first direction, the first portion and the third portion extend along the second direction, respectively, the first portion is rotatably connected to the second link, and the third portion is rotatably connected to the fourth link.

Optionally, the third portion passes through the first loading portion and is connected with the fourth link in a rotating manner, and the third portion and the first loading portion can generate relative movement in the first direction.

Optionally, the first fixing piece and the second fixing piece are arranged at intervals along the first direction.

Optionally, the first fixing member extends at least partially along the first direction, the second fixing member extends at least partially along the first direction, and the third link extends at least partially along the first direction.

Optionally, the method further comprises:

a reference plate to which the link assembly is supported in the first direction, the first loading portion and the third loading portion being capable of protruding out of the reference plate in the first direction;

a first fixing portion vertically installed to the reference plate, the first fixing portion extending in the second direction;

the first sliding part is connected with the first fixing part and can slide relative to the first fixing part in the first direction.

Optionally, the method further comprises:

a third sliding member connected to the first fixing portion;

and the fourth sliding part is connected with the first sliding part, and is positioned between the third sliding part and the first sliding part along a third direction which is perpendicular to the first direction, the third sliding part and the fourth sliding part are mutually matched, and the third sliding part and the fourth sliding part can generate relative sliding in the first direction.

Optionally, the number of the third sliding parts is two, the third sliding parts are arranged at intervals along the second direction and respectively extend along the first direction, and the fourth sliding parts correspond to the third sliding parts one to one.

Optionally, the method further comprises:

the second sliding part is connected with the first fixing part and can slide relative to the first fixing part in the first direction.

Optionally, the method further comprises:

a fifth slider connected to the first fixing portion;

and the sixth sliding piece is connected with the second sliding piece, and is positioned between the fifth sliding piece and the second sliding piece along a third direction, the third direction is perpendicular to the first direction, the sixth sliding piece and the fifth sliding piece are mutually matched, and the sixth sliding piece and the fifth sliding piece can generate relative sliding in the first direction.

Optionally, the number of the fifth sliding parts is two, the fifth sliding parts are arranged at intervals along the second direction and respectively extend along the first direction, and the fifth sliding parts and the sixth sliding parts are in one-to-one correspondence.

Optionally, the method further comprises:

a second fixing portion vertically mounted to the reference plate;

the first driving assembly is arranged on the second fixing part, is connected with the first fixing part and is used for driving the first fixing part to move along the first direction; and/or

And the second driving assembly is arranged on the second fixing part, is connected with the second fixing part and is used for driving the second fixing part to move along the first direction.

Optionally, the second fixing portion extends along a third direction, and the third direction is perpendicular to the first direction.

Optionally, the first driving assembly is connected to the first fixing member through a first connecting member, and is configured to drive the first fixing member to move along the first direction relative to the second fixing portion.

Optionally, the method further comprises:

a seventh sliding member connected to the second fixing portion;

and the eighth sliding part is connected with the first fixed part, the seventh sliding part and the eighth sliding part are mutually matched, and the seventh sliding part and the eighth sliding part can generate relative sliding in the first direction.

Optionally, in the second direction, the first connecting element is at least partially located between the eighth sliding element and the first fixed element, and is connected to the eighth sliding element and the first fixed element, respectively.

Optionally, the number of the seventh sliding parts is two, the seventh sliding parts are arranged at intervals along the third direction and respectively extend along the first direction, and the eighth sliding parts and the seventh sliding parts are in one-to-one correspondence.

Optionally, the first drive assembly comprises: the first screw rod extends along the first direction, and is connected with a first motor; and the first lead screw nut is sleeved on the first lead screw and is connected with the first fixing piece through the first connecting piece.

Optionally, the second driving assembly is connected to the second fixing member through a second connecting member, and is configured to drive the second fixing member to move along the first direction relative to the second fixing portion.

Optionally, the method further comprises:

a ninth slider connected to the second fixing portion;

and the ninth sliding piece and the tenth sliding piece are mutually matched, and the ninth sliding piece and the tenth sliding piece can generate relative sliding in the first direction.

Optionally, the second connecting member is at least partially located between the tenth sliding member and the second fixed member along the second direction, and is connected to the tenth sliding member and the second fixed member respectively.

Optionally, the number of the ninth sliding parts is two, the ninth sliding parts are arranged at intervals along the third direction and respectively extend along the first direction, and the tenth sliding parts and the ninth sliding parts correspond to each other one to one.

Optionally, the second drive assembly comprises: the second screw rod extends along the first direction and is connected with a second motor; and the second screw rod nut is sleeved on the second screw rod and is connected with the second fixing piece through the second connecting piece.

Optionally, the method further comprises:

a third fixing portion vertically mounted to the reference plate;

and the third driving assembly is arranged on the third fixing part, is connected with the third fixing part and is used for driving the third fixing part to move along the first direction.

Optionally, the third fixing portion extends along a third direction, and the third direction is perpendicular to the first direction.

Optionally, the third driving assembly is connected to the third fixing member through a third connecting member, and is configured to drive the third fixing member to move along the first direction relative to the third fixing portion.

Optionally, the method further comprises:

an eleventh slider connected to the third fixing portion;

and the twelfth sliding part is connected with the third fixed part, the eleventh sliding part and the twelfth sliding part are matched with each other, and the eleventh sliding part and the twelfth sliding part can generate relative sliding in the first direction.

Optionally, in the second direction, the third connecting member is at least partially located between the twelfth sliding member and the third fixed member, and is connected to the twelfth sliding member and the third fixed member, respectively.

Optionally, the number of the eleventh sliding parts is two, the eleventh sliding parts are arranged at intervals along the third direction and respectively extend along the first direction, and the twelfth sliding parts and the eleventh sliding parts correspond to each other one to one.

Optionally, the third drive assembly comprises: the third screw rod extends along the first direction and is connected with a third motor; and the third screw rod nut is sleeved on the third screw rod and is connected with the third fixing piece through the third connecting piece.

Optionally, a supporting member is disposed on the first fixing portion, and the second connecting rod is connected to the supporting member through a third elastic member.

Optionally, the supporting member includes a first portion, a second portion, and a third portion that are connected perpendicularly to each other, the first portion of the supporting member and the third portion of the supporting member are disposed at an interval along the first direction, the second portion of the supporting member extends along the first direction, the first portion of the supporting member is disposed on a side of the first fixing portion facing away from the reference plate, the third portion of the supporting member is located above the second link, one end of the third elastic member is connected to the third portion of the supporting member, and the other end of the third elastic member is connected to the second link.

The utility model also provides a microscope, including above-mentioned arbitrary many connecting rods loading device.

As above, the utility model provides a many connecting rods loading device, including link assembly, including first mounting, first connecting rod, second connecting rod, third connecting rod, fourth connecting rod, fifth connecting rod and the second mounting that rotates the connection in proper order, the second connecting rod with the fourth connecting rod sets up along first direction interval, the second connecting rod extends along the second direction, the fourth connecting rod extends along the second direction, the second direction with the contained angle of first direction is greater than 0 °; equivalent to the connecting rod component, forms a lever structure. Further comprising: a first loading part and a second loading part respectively extending along the first direction; the first fixing piece or the third connecting rod can move along the first direction so as to drive the second connecting rod to drive the first loading part to move along the first direction; the second fixing piece or the third connecting rod can move along the first direction to drive the fourth connecting rod to drive the second loading part to move along the first direction.

The connecting rod assembly forms a lever structure, the first fixing piece transmits a force value to the first loading part, and the second fixing piece transmits a force value to the second loading part; the first loading part and the second loading part can apply different loading forces, and the first loading part or the second loading part can be rapidly switched and selected to apply the loading force according to a specific application scene, so that the loading efficiency is improved.

In order to make the aforementioned and other objects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a first perspective view of a connecting rod assembly in a multi-connecting rod loading device according to an embodiment of the present invention;

fig. 2 is a first side view of a connecting rod assembly of the multi-connecting rod loading device according to the embodiment of the present invention;

fig. 3 is a second perspective view of the connecting rod assembly of the multi-connecting rod loading device according to the embodiment of the present invention;

fig. 4 is a third perspective view of the connecting rod assembly in the multi-connecting rod loading device according to the embodiment of the present invention;

fig. 5 is a fourth perspective view of the connecting rod assembly in the multi-connecting rod loading device according to the embodiment of the present invention;

fig. 6 is a second side view of the connecting rod assembly of the multi-connecting rod loading device according to the embodiment of the present invention;

fig. 7 is a first perspective view of a multi-link loading device according to an embodiment of the present invention;

fig. 8 is a second perspective view of the multi-link loading device according to the embodiment of the present invention;

fig. 9 is a third perspective view of the multi-link loading device according to the embodiment of the present invention;

fig. 10 is a fourth perspective view of the multi-link loading device according to the embodiment of the present invention;

fig. 11 is a fifth perspective view of the multi-link loading device according to the embodiment of the present invention;

fig. 12 is a sixth perspective view of a multi-link loading device according to an embodiment of the present invention;

fig. 13 is a seventh perspective view of the multi-link loading device according to the embodiment of the present invention;

fig. 14 is a side view of a multi-link loading apparatus according to an embodiment of the present invention;

fig. 15 is a first perspective view of a clamping device according to an embodiment of the present invention;

fig. 16 is a second perspective view of the clamping device according to the embodiment of the present invention;

fig. 17 is a top view of a clamping device according to an embodiment of the present invention;

fig. 18 is a third perspective view of the clamping device according to the embodiment of the present invention;

fig. 19 is a perspective view of a second mounting portion of the clamping device of the embodiment of the present invention;

fig. 20 is a perspective view of a first mounting portion of a clamping device in accordance with an embodiment of the present invention;

fig. 21 is a side view of a first embodiment of a clamping device of the present invention;

fig. 22 is a second side view of the clamping device according to the embodiment of the present invention.

Detailed Description

The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

Referring to fig. 1 to 7, the present invention provides a multi-link loading device 1 for providing a loading force, preferably, the multi-link loading device 1 is used for performing mechanical tests, such as testing brinell hardness, vickers hardness, rockwell hardness, micro vickers hardness, etc. The utility model discloses a many connecting rods loading device 1 includes: the first loading portion 21 and the connecting rod assembly 10, wherein the first loading portion 21 extends along a first direction (shown in an X direction in fig. 1, 2 and 6), and the connecting rod assembly 10 includes a first fixing member 31, a first connecting rod 11, a second connecting rod 12 and a third connecting rod 13 which are rotatably connected in sequence. That is, the first fixing member 31, the first link 11, the second link 12, and the third link 13 constitute a four-link assembly.

The second link 12 extends along a second direction (shown in the Y direction in fig. 1, 2 and 6), and the angle between the second direction and the first direction is greater than 0 °; corresponding to the connecting-rod assembly 10, forms a lever structure. The first fixing member 31 or the third connecting rod 13 can move along the first direction to drive the second connecting rod 12 to drive the first loading portion 21 to move along the first direction.

Referring to fig. 3 and 6, the first fixing member 31 is rotatably connected to the first link 11 about a first axis (shown as a in fig. 3), the second link 12 is rotatably connected to the third link 13 about a second axis (shown as B in fig. 3), the first axis a is located on a first plane (shown as M in fig. 6), the first axis a is parallel to the second axis B, the second axis B is located on a second plane (shown as N in fig. 6), and a point of action of the second link 12 on the first loading portion 21 is located on a third plane (shown as P in fig. 6).

The first plane M, the second plane N and the third plane P all extend along the first direction, and along the second direction, the first plane M is a first distance from the third plane P (shown as D1 in FIG. 6), the second plane N is a second distance from the third plane P (shown as D2 in FIG. 6), and the first distance D1 is greater than the second distance D2.

The action point of the second connecting rod 12 applying the acting force to the first loading part 21 is a first fulcrum, and the first distance D1 is greater than the first distance D representing that the distance from the first fixing member 31 to the first fulcrum is greater, that is, the first fixing member 31 corresponds to the long moment arm, by using the seesaw-like lever principle; the second distance D2 is small, which means that the distance from the third link 13 to the first fulcrum is small, that is, the third link 13 corresponds to the short moment arm; thus, in the case where the first fixing member 31 and the third link 13 move by the same distance in the first direction, the distance that the third link 13 drives the first loading portion 21 to move in the first direction is greater than the distance that the first fixing member 31 drives the first loading portion 21 to move in the first direction. Then, the first loading part 21 can be driven to move rapidly through the third connecting rod 13, so as to realize coarse adjustment; the first loading part 21 is driven to move slowly by the first fixing piece 31, so that fine adjustment is realized; the fast loading and the slow loading are combined skillfully, and the speed and the precision are considered simultaneously.

Preferably, the first fixing member 31 extends at least partially along the first direction, and the third link 13 extends at least partially along the first direction.

Preferably, the first distance is D1, the second distance is D2, 1/20 ≦ D2/D1 ≦ 1/3. More preferably, 1/19 ≦ D2/D1 ≦ 1/10. That is, the four-bar linkage assembly formed by the first fixing member 31, the first link 11, the second link 12 and the third link 13 has a lever transmission ratio of 1/20 to 1/3.

Preferably, with continued reference to fig. 1 to 6, the connecting rod assembly 10 of the multi-connecting rod loading device 1 of the present invention includes a first fixing member 31, a first connecting rod 11, a second connecting rod 12, a third connecting rod 13, a fourth connecting rod 14, a fifth connecting rod 15 and a second fixing member 32 which are rotatably connected in sequence. The second link 12 and the fourth link 14 are spaced apart from each other along a first direction (shown by an X direction in fig. 1, 2 and 6), the second link 12 extends along a second direction (shown by a Y direction in fig. 1, 2 and 6), the fourth link 14 extends along the second direction, and an angle between the second direction and the first direction is greater than 0 °; corresponding to the connecting-rod assembly 10, forms a lever structure.

Preferably, the second link 12 is parallel to the fourth link 14. Preferably, the third link 13 extends at least partially in the first direction. Preferably, the second attachment member 32 extends at least partially in the first direction.

Referring to fig. 5 and 7, the multi-link loading device 1 of the present invention further includes a first loading portion 21 and a second loading portion 22 respectively extending along the first direction; the first fixing member 31 is rotatably connected to the first link 11 and can move along the first direction to drive the second link 12 to drive the first loading portion 21 to move along the first direction, and preferably, the first fixing member 31 extends along the first direction; and a second fixing part 32, the second fixing part 32 is rotatably connected to the fifth connecting rod 15, and the second fixing part 32 or the third connecting rod 13 can move along the first direction to drive the fourth connecting rod 14 to drive the second loading part 22 to move along the first direction.

In other words, one end of the first link 11 is rotatably connected to the first fixing member 31, and the other end is rotatably connected to the second link 12; one end of the second connecting rod 12 is rotatably connected with the first connecting rod 11, and the other end is rotatably connected with the third connecting rod 13; one end of the third connecting rod 13 is rotationally connected with the second connecting rod 12, and the other end is rotationally connected with the fourth connecting rod 14; one end of the fourth connecting rod 14 is rotationally connected with the third connecting rod 13, and the other end of the fourth connecting rod 14 is rotationally connected with the fifth connecting rod 15; one end of the fifth link 15 is rotatably connected to the second fixing member 32, and the other end is rotatably connected to the fourth link 14.

In other words, the multi-link loading device 1 of the present embodiment includes two sets of four-link assemblies, namely, a first four-link assembly formed by the first fixing member 31, the first link 11, the second link 12 and the third link 13, and a second four-link assembly formed by the third link 13, the fourth link 14, the fifth link 15 and the second fixing member 32; the working principle of the first four-connecting-rod assembly is the same as that of the second four-connecting-rod assembly. The first four-connecting-rod assembly and the second four-connecting-rod assembly can operate independently and can also operate in a matched mode.

On one hand, as the connecting rod assembly 10 forms a lever structure, wherein the action point of the second connecting rod 12 applying the acting force to the first loading part 21 is a first fulcrum, and the action point of the fourth connecting rod 14 applying the acting force to the second loading part 22 is a second fulcrum, a seesaw-like lever principle is adopted; the first fixing member 31 transmits a force value to the first loading portion 21 under the action of the driving assembly, and the second fixing member 32 transmits a force value to the second loading portion 22 under the action of the driving assembly; the first loading part 21 and the second loading part 22 provide loading forces, the first loading part 21 and the second loading part 22 can apply different loading forces, the loading forces applied by the first loading part 21 or the second loading part 22 can be rapidly switched and selected according to specific application scenes, force values are transmitted, and therefore loading efficiency is improved.

On the other hand, because two sets of four connecting rod assemblies are included, the first four connecting rod assembly and the second four connecting rod assembly share the third connecting rod 13, as described above, the first four connecting rod assembly can realize the ingenious combination of fine adjustment, coarse adjustment, fast loading and slow loading, and simultaneously give consideration to speed and precision; similarly, the ingenious combination of fine adjustment, coarse adjustment, fast loading and slow loading can be realized through the second four-connecting-rod assembly, and meanwhile, the speed and the precision are considered.

Specifically, referring to fig. 3 and 6, the second fixing member 32 is rotatably connected to the fifth link 15 about a fourth axis (D in fig. 3), the third link 13 is rotatably connected to the fourth link 14 about a fifth axis (E in fig. 3), the fourth axis D is parallel to the fifth axis E, the fourth axis D is located on a fourth plane (H in fig. 6), the fifth axis E is located on a fifth plane (Q in fig. 6), and a point of action of the fourth link 14 on the second loading portion 22 is located on a sixth plane (J in fig. 6).

The fourth plane H, the fifth plane Q and the sixth plane J all extend along the first direction, and along the second direction, the fourth plane H is a third distance (shown as D3 in FIG. 6) from the sixth plane J, the fifth plane Q is a fourth distance (shown as D4 in FIG. 6) from the sixth plane J, and the third distance D3 is greater than the fourth distance D4.

The action point of the fourth connecting rod 14 applying the acting force to the second loading portion 22 is a second fulcrum, and the third distance D3 is greater than the second distance D representing that the distance from the second fixing member 32 to the second fulcrum is greater, that is, the second fixing member 32 corresponds to the long force arm, by using the seesaw-like lever principle; the fourth distance D4 is small, which means that the distance from the third link 13 to the second fulcrum is small, that is, the third link 13 corresponds to the short moment arm; thus, in the case where the second fixing member 32 and the third link 13 move by the same distance in the first direction, the distance that the third link 13 drives the second loading portion 22 to move in the first direction is greater than the distance that the second fixing member 32 drives the second loading portion 22 to move in the first direction. Then, the second loading part 22 can be driven to move rapidly through the third connecting rod 13, so as to realize coarse adjustment; the second loading part 22 is driven to move slowly by the second fixing part 32, so that fine adjustment is realized; the fast loading and the slow loading are combined skillfully, and the speed and the precision are considered simultaneously.

Preferably, the third distance is D3, the fourth distance is D4, 1/20 ≦ D4/D3 ≦ 1/3. More preferably, 1/19 ≦ D4/D3 ≦ 1/10. That is, the lever transmission ratio of the second four-bar linkage assembly formed by the third link 13, the fourth link 14, the fifth link 15 and the second fixing member 32 is 1/20-1/3.

It should be noted that the multi-link loading device 1 of the present embodiment can achieve the optimal combination of speed and precision by adjusting the lever transmission ratio, thereby adjusting the loading speed and precision of the first loading portion 21 and the second loading portion 22, and implementing high precision force value transmission.

Preferably, with continued reference to fig. 2-7, the multi-link loading apparatus 1 of the present invention further comprises: the third loading portion 23 and the third fixing member 33 extend along the first direction, and the third fixing member 33 is connected to the third link 13 and can move along the first direction to drive the fourth link 14 to drive the third loading portion 23 to move along the first direction. Preferably, the third fixing member 33 is separately machined from the third link 13 and then assembled together. More preferably, the third fixing member 33 is integrally formed with the third link 13. Referring to fig. 3 and 4, preferably, the third fixing member 33 is vertically connected to the third link 13. Preferably, the third fixing member 33 extends at least partially in the first direction.

Also, since the link assembly 10 forms a lever structure in which the point of action of the fourth link 14 applying a force to the third loading portion 23 is a third fulcrum, the third fixing member 33 transmits a force to the third loading portion 23 under the action of the driving assembly. Therefore, the multi-link loading device 1 of the present invention provides loading force through the first loading portion 21, the second loading portion 22 and the third loading portion 23, respectively, so as to realize force value transmission; the first loading part 21, the second loading part 22 and the third loading part 23 can apply loading forces with different speeds and different magnitudes, and the first loading part 21, the second loading part 22 or the third loading part 23 can be quickly switched and selected to apply the loading forces according to specific application scenes, so that the loading efficiency is improved.

Preferably, in the first direction, the moving speed of the third loading portion 23 is greater than the moving speed of the first loading portion 21; the speed of the second loading part 22 is selected according to the specific application scenario. Preferably, the third loading portion 23 and the second loading portion 22 can move synchronously along the first direction, that is, the moving speeds of the second loading portion 22 and the third loading portion 23 are the same.

Preferably, in the first direction, the loading force of the first loading part 21 is greater than that of the second loading part 22, and the first loading part 21 or the second loading part 22 is selected to apply the loading force according to a specific application scenario. Preferably, the two sets of four-bar linkage assemblies of the present invention are used in cooperation, and the first fixing member 31 can drive the first loading portion 21 to apply a large loading force, so as to realize the transmission of a large force value; the second fixing piece 32 drives the second loading part 22 to apply a small loading force, so that the transmission of a small force value is realized; the third loading part 23 is driven to move rapidly by the third fixing member 33.

Preferably, the first loading portion 21, the second loading portion 22, or the third loading portion 23 is used for applying a loading force to a loading ram 120, which will be described later, so as to transmit a force value, and the loading ram is in contact with a measured object, so as to implement a mechanical test.

Preferably, the third fixing member 33 drives the third loading portion 23 to move rapidly to make the loading ram move rapidly to contact with the object to be measured, so as to realize coarse adjustment; then the first fixing piece 31 drives the first loading part 21 to move slowly, and large loading force is applied to the loading pressure head, so that the loading pressure head applies large loading force to the measured object, the precision is high, and fine adjustment is realized; or the second fixing part 32 drives the second loading part 22 to move slowly, and small loading force is applied to the loading pressure head, so that the loading pressure head applies small loading force to the measured object, the precision is high, and fine adjustment is realized; or, the first loading part 21 moves slowly to apply a large loading force, and the second loading part 22 moves slowly to apply a small loading force; alternatively, the first loading part 21 is moved slowly to apply a large loading force, and the second loading part 22 is moved slowly to apply a small loading force. In a word, the smart combination of fast loading and slow loading can be realized, the speed and the precision are considered, and the force value transmission is completed.

Specifically, referring to fig. 5 and fig. 7, in the present embodiment, the second fixing element 32 can move along the first direction to drive the fourth link 14 to drive the second loading portion 22 and the third loading portion 23 to move synchronously along the first direction; the third fixing member 33 can move along the first direction to drive the fourth link 14 to drive the second loading portion 22 and the third loading portion 23 to move synchronously along the first direction.

Preferably, referring to fig. 2 to 6, the third loading portion 23 and the first loading portion 21 are arranged in parallel, and preferably, the third loading portion 23 and the first loading portion 21 are arranged at an interval along the second direction; referring to fig. 5 and 7, the second loading portion 22 is located inside the first loading portion 21, is compact, and is capable of moving relative to the first loading portion 21 along the first direction.

As shown in fig. 5 and 6, along the first direction (shown by the direction X in fig. 5 and 6), an end 21b of the first loading portion 21 facing the second link 12 is longer than an end 23b of the third loading portion 23 facing the fourth link 14, and an end 23a of the third loading portion 23 facing away from the fourth link 14 is longer than an end 21a of the first loading portion 21 facing away from the second link 12. Further preferably, an end 23a of the third loading portion 23 facing away from the fourth link 14 is longer than an end 22a of the second loading portion 22 facing away from the second link 12.

Under the cooperation of the two four-bar linkage assemblies, along the first direction, the movement speed of the third loading portion 23 is greater than the movement speed of the first loading portion 21, so that one end 23a of the third loading portion 23, which faces away from the fourth linkage 14, can first contact with the first portion 13 of the first mounting portion 130, which will be described later, so that the loading ram 120 can quickly contact with the object to be tested, that is, the third loading portion 23 quickly moves to contact with the first portion 13 of the first mounting portion 130, which will be described later, so as to achieve force transmission, so that the loading ram 120 quickly contacts with the object to be tested, and then the first loading portion 21 and/or the second loading portion 22 slowly move to apply a loading force to the loading ram, and then the loading ram applies a loading force to the object to be tested, thereby completing a mechanical test, such as completing a test on vickers hardness of the object to be tested or a test on a micro vickers hardness of the object to be tested, wherein, the test of completing the Vickers hardness needs large loading force, and the test of completing the microscopic Vickers hardness needs small loading force.

Preferably, referring to FIG. 6, the length of the third loading portion 23 is L1, and the length of the third loading portion 23 longer than the first loading portion 21 is L2, wherein 1/20 ≦ L2/L1 ≦ 1/18. Preferably, the length of the third loading part 23 is L1, and the length of the third loading part 23 longer than the second loading part 22 is L3, wherein 1/20 ≦ L3/L1 ≦ 1/18. Preferably, before the first loading part 21 and the third loading part 23 are not moved in the initial state, the length of the third loading part 23 is L1, and the length of the third loading part 23 longer than the first loading part 21 is L2, wherein 1/20 ≦ L2/L1 ≦ 1/18; the length of the third loading part 23 is L1, the length of the third loading part 23 longer than the second loading part 22 is L3, wherein 1/20 is equal to or less than L3/L1 is equal to or less than 1/18.

With continuing reference to fig. 1 to 6, the multi-link loading device 1 of the present invention further includes:

the first slider 51 is connected to the first loading portion 21 in a non-limited manner, for example, by a bolt. Preferably, the first slider 51 is provided with a first force value sensor 24, which will be described later, and the first biasing portion 21 is attached to the first force value sensor 24. In the first direction, the first slider 51 is located between the second link 12 and the fifth link 15, and the first slider 51 is located at least partially between the second link 12 and the first loading portion 21; and a first protrusion 41 provided at a portion of the second link 12 facing the fifth link 15, that is, a first protrusion 41 provided at a portion of the second link 12 facing the first slider 51, the first protrusion 41 contacting the first slider 51, the first protrusion 41 driving the first slider 51 to move in the first direction when the first fixing member 31 or the third link 13 moves in the first direction.

Wherein a portion of the first projection 41 in contact with the first slider 51 serves as a first fulcrum. Preferably, when the first fixing member 31 is moved in the first direction (the direction a in fig. 6) by the driving assembly, the first convex portion 41 drives the first sliding member 51 to move downwards through the linkage of the first connecting rod 11 and the second connecting rod 12, and then the first loading portion 21 connected to the first sliding member 51 also moves downwards to apply a loading force to a measured object (not shown). Preferably, the fourth link 14 and the fifth link 15 are relatively stationary during this process.

Preferably, in the present invention, the first convex portion 41 is in rolling contact with the first slider 51. The first protrusion 41 is provided with a first rolling element 41a, the first rolling element 41a is in rolling contact with the first slider 51, the first rolling element 41a is rotatable about a third axis (shown by C in fig. 3) which is located on the third plane (shown by P in fig. 6) and is parallel to the first axis a. Preferably, in the present embodiment, the first rolling element 41a is a roller, and the first protrusion 41 and the first slider 51 are in rolling contact through the roller, which facilitates the first slider 51 to be driven by the first protrusion 41 to move in the first direction; in addition, friction between the first protrusion 41 and the first slider 51 can be reduced, and the service life can be prolonged. In other embodiments, the first rolling body is, for example, a needle bearing or a ball bearing.

Preferably, the first protrusion 41 is close to the rotational connection of the second link 12 and the third link 13. In this embodiment, the first protrusion 41 is disposed on a portion of the second link 12 facing the fifth link 15, and is close to a rotational connection between the second link 12 and the third link 13.

In addition, referring to fig. 1 to 6, a first force value sensor 24 is disposed on the first sliding member 51 for feeding back the loading force of the first loading portion 21. The driving assembly adjusts the loading force of the first loading portion 21 according to the feedback of the first force value sensor 24. Preferably, the loading force of the first loading part 21 is adjusted by adjusting the power of the motor.

Referring to fig. 1 to 3, the first slider 51 and the second link 12 of the present invention are connected by a first elastic member 20. Preferably, the first elastic member 20 is a spring. The existence of the first elastic element 20 can play a role in resetting on one hand, and can play a role in preventing the first sliding element 51 from moving in a direction away from the second connecting rod 12 due to the action of gravity when the first sliding element 51 is not subjected to an external force on the other hand, so that the installation stability of the first sliding element 51 is improved.

the second sliding member 52 is connected to the third loading portion 23 in a non-limited manner, for example, by a bolt. In the first direction, the fifth link 15 is located between the second slider 52 and the second link 12; and a second protrusion 42 provided at a portion of the fourth link 14 facing away from the second link 12, wherein the second protrusion 42 contacts the second slider 52, and when the second fixing member 32 or the third link 13 moves in the first direction, the second protrusion 42 drives the second slider 52 to move in the first direction.

Wherein a portion of the second projection 42 contacting the second slider 52 serves as a second fulcrum. Preferably, when the second fixing element 32 is moved in a direction (indicated by direction B in fig. 6) away from the first link 11 in the first direction by the driving assembly, the second protrusion 42 drives the second sliding element 52 to move downwards through the linkage of the fourth link 14 and the fifth link 15, and then the second loading portion 22 connected to the second sliding element 52 also moves downwards to apply a loading force to a measured object (not shown). Preferably, the first link 11 and the second link 12 are relatively stationary during this process. Preferably, when the third fixing member 33 is moved in the first direction (indicated by direction B in fig. 6) away from the first connecting rod 11 under the action of the driving assembly, the second protrusion 42 drives the second sliding member 52 to move downwards, and then the second loading portion 22 and the third loading portion 23 connected to the second sliding member 52 also move downwards.

Preferably, in the present invention, the second convex portion 42 is in rolling contact with the second slider 52. The second projection 42 is provided with a second rolling element that is in rolling contact with the second slider 52, and the second rolling element is rotatable about a sixth axis (F in fig. 3) that is located in the third plane (J in fig. 6) and is parallel to the fourth axis D. Preferably, in the present embodiment, the second rolling element is a roller, and the second protrusion 42 and the second slider 52 are in rolling contact through the roller, which facilitates the second slider 52 to be driven by the second protrusion 42 to move in the first direction; in addition, the friction between the second convex portion 42 and the second slider 52 can be reduced, and the service life can be prolonged. In other embodiments, the second rolling body is, for example, a needle bearing or a ball bearing.

Preferably, the second protrusion 42 is close to the rotational connection between the third link 13 and the fourth link 14. In this embodiment, the second protrusion 42 is disposed on a portion of the fourth link 14 facing away from the second link 12, and is close to a rotation connection between the third link 13 and the fourth link 14.

In addition, referring to fig. 1 to 6, a second force sensor 25 is disposed on the second sliding member 52 for feeding back the loading force of the second loading portion 22. The driving assembly adjusts the loading force of the second loading portion 22 according to the feedback of the second force value sensor 25. Preferably, the loading force of the second loading portion 22 is adjusted by adjusting the power of the motor.

The second sliding member 52 and the fourth link 14 of the present invention are connected by a second elastic member (not shown). Preferably, the second elastic member is a spring. The existence of the second elastic member can play a role in resetting on one hand, and can play a role in preventing the second sliding member 52 from moving in a direction away from the fourth connecting rod 14 due to the action of gravity when the second sliding member 52 is not subjected to an external force on the other hand, so that the installation stability of the second sliding member 52 is improved.

Wherein, along the second direction (shown as Y direction in fig. 5), one end 25a of the second force value sensor 25 is located in the first loading portion 21 and can move relative to the first loading portion 21 along the first direction (shown as X direction in fig. 6), and the second loading portion 22 is disposed on the second force value sensor 25, for example, disposed on the second force value sensor 25 by bolts. Thus, when the second fixing element 32 moves in the first direction (indicated by direction B in fig. 6) away from the first link 11 under the action of the driving assembly, the second protrusion 42 drives the second sliding element 52 to move downwards through the linkage of the fourth link 14 and the fifth link 15, and then the second force value sensor 25 connected to the second sliding element 52 also moves downwards, so that the second loading portion 22 provided on the second force value sensor 25 also moves downwards to transmit a force value to a measured object (not shown).

In addition, in the present embodiment, the third loading portion 23 is also disposed on the second sliding member 52, and is connected to the second sliding member 52 by a bolt, for example. Thus, the second loading portion 22 and the third loading portion 23 move in synchronization. In this embodiment, when the third fixing element 33 is moved in the first direction (indicated by direction B in fig. 6) away from the first link 11 under the action of the driving assembly, the second protrusion 42 drives the second sliding element 52 to move downwards through the linkage of the third link 13, the fourth link 14 and the fifth link 15, and then the third loading portion 23 connected to the second sliding element 52 also moves downwards. Preferably, the first link 11 and the second link 12 are relatively stationary during this process. Accordingly, the portion of the second projection 42 that contacts the second slider 52 also serves as the third fulcrum.

In the present embodiment, the second loading portion 22 and the third loading portion 23 share the second slider 52, but are driven by the second fixing member 32 and the third fixing member 33, respectively, to realize the movement in the first direction. However, the arrangement form of the first loading portion 21, the second loading portion 22, and the third loading portion 23 is not limited to this, and the first fixing member 31, the second fixing member 32, and the third fixing member 33 may be driven to move in the first direction. Preferably, the first loading portion 21, the second loading portion 22 and the third loading portion 23 are disposed in parallel, and the first loading portion 21, the second loading portion 22 and the third loading portion 23 are disposed at an interval along the second direction.

With continued reference to fig. 1 to 6, in the present embodiment, the third link 13 has a first portion 13a, a second portion 13c and a third portion 13b connected to each other, wherein the first portion 13a and the third portion 13b are disposed at intervals along the first direction (shown in the X direction in fig. 3), the first portion 13a and the third portion 13b extend along the second direction (shown in the Y direction in fig. 3), respectively, the first portion 13a is rotatably connected to the second link 12, and the third portion 13b is rotatably connected to the fourth link 14. Preferably, the second portion 13c of the third link 13 extends in the first direction.

Referring to fig. 3, the third portion 13b of the third link 13 passes through the first loading portion 21 and is rotatably connected to the fourth link 14, and the third portion 13b and the first loading portion 21 can generate relative movement in the first direction. Preferably, the first loading portion 21 is a frame-shaped structure, and has a penetrating portion, and the third portion 13b of the third link 13 passes through the penetrating portion of the first loading portion 21 and can move relative to the penetrating portion of the first loading portion 21 in the first direction.

In addition, referring to fig. 2 and 6, the first fixing member 31 and the second fixing member 32 of the present invention are spaced apart along the first direction. That is, the first fixing member 31 and the second fixing member 32 are movable in the same direction, and are arranged such that the first slider 51 and the second slider 52 are also moved in the same direction, thereby ensuring the uniformity in the moving direction of the first loading portion 21, the second loading portion 22, and the third loading portion 23. In other words, the first loading portion 21, the second loading portion 22, and the third loading portion 23 all move in the first direction without deviating from the first direction.

To sum up, the utility model discloses a many connecting rods drive arrangement adopts the lever principle of similar seesaw: the multi-connecting-rod smart combination of fast loading and slow loading is formed, speed and precision are considered, strength is easy to guarantee, and the combination of fast and slow lifting speed is realized. In the macro-micro transfer device of the multi-link mechanism, the effective combination of quick loading, slow loading and high-precision loading is completed through motor control. In addition, the lever transmission ratio can be adjusted to achieve the optimal combination of speed and precision, high-precision force value transmission is achieved, and the force value transmission device gives consideration to both speed and transmission precision.

Referring to fig. 7 and 8 in conjunction with fig. 1 to 6, the multi-link loading apparatus 1 of the present invention further includes: a reference plate 60, wherein the connecting rod assembly 10 is supported on the reference plate 60 along the first direction (shown in the X direction in fig. 7 and 8), and the first loading part 21 and the third loading part 23 can extend out of the reference plate 60 along the first direction and move towards a measured object to perform a mechanical test; and a first fixing portion 61, the first fixing portion 61 being vertically mounted to the reference plate 60, the first fixing portion 61 extending in the second direction (indicated by Y direction in fig. 7 and 8); the link assembly 10 is connected to the first fixing portion 61 to be supported on the reference plate 60. Preferably, the link assembly 10 is parallel to the first fixing portion 61 and connected with the first fixing portion 61.

The first slider 51 is connected to the first fixing portion 61 and is capable of sliding relative to the first fixing portion 61 in the first direction. Specifically, the multi-link loading device 1 further includes: a third sliding part 53 connected with the first fixing part 61, preferably, the third sliding part 53 is fixedly connected with the first fixing part 61; and a fourth slider 54 connected to the first slider 51, wherein the fourth slider 54 is located between the third slider 53 and the first slider 51 in a third direction (shown in a Z direction in fig. 8), the third direction is perpendicular to the first direction, and the third slider 53 and the fourth slider 54 are engaged with each other, and the third slider 53 and the fourth slider 54 can slide relative to each other in the first direction. The third slider 53 and the fourth slider 54 abut at least during the movement of the first slider 51 relative to the first fixed part 61 in the first direction.

It should be noted that the type of the sliding member of the present invention is not limited, and the sliding member may be engaged with the sliding member in different manners, so that the sliding member can slide relatively. In this embodiment, the third sliding member 53 is a sliding rail, the fourth sliding member 54 is a sliding block, and the fourth sliding member 54 is sleeved on the third sliding member 53 to realize mutual matching. In other embodiments, other types of slides are possible, such as guide rods and sliding sleeves.

Preferably, the first direction, the second direction and the third direction are perpendicular to each other.

Further preferably, referring to fig. 8, the third sliding members 53 are two, are arranged at intervals along the second direction (indicated by Y direction in fig. 8), and respectively extend along the first direction (indicated by X direction in fig. 8), and the fourth sliding members 54 and the third sliding members 53 correspond to each other one by one. That is, the fourth slider 54 is two and is provided at an interval in the second direction. This arrangement contributes to the stability of the movement of the first slider 51 in the first direction with respect to the first fixed portion 61, and thus the stability of the movement of the first loading portion 21 in the first direction. In other embodiments, a corresponding number of third sliders 53, for example three, four, etc., is selected according to the application scenario.

In addition, the first sliding member 51 and the second link 12 according to the present invention are connected by the first elastic member 20. The device can prevent the fourth sliding part 54 connected with the first sliding part 51 from moving relative to the third sliding part 53 under the action of gravity when the first sliding part 51 is not subjected to the action of external force, so that the installation stability of the first sliding part 51 is improved; that is, when the first slider 51 is not subjected to an external force, the link assembly 10 is stably connected to the first fixing portion 61 to be stably supported on the reference plate 60.

Preferably, the second slider 52 and the first slider 51 share the first fixing portion 61, that is, the second slider 52 is connected to the first fixing portion 61 and can slide relative to the first fixing portion 61 in the first direction. Specifically, the multi-link loading device 1 further includes: a fifth sliding part 55 connected to the first fixing part 61, preferably, the fifth sliding part 55 is fixedly connected to the first fixing part 61; and a sixth slider 56 connected with the second slider 52.

In a third direction (shown in the Z direction in fig. 8), the sixth slide 56 is located between the fifth slide 55 and the second slide 52, the third direction is perpendicular to the first direction, and the sixth slide 56 and the fifth slide 55 are engaged with each other, and the sixth slide 56 and the fifth slide 55 can slide relatively in the first direction. The fifth slider 55 and the sixth slider 56 abut at least during the movement of the second slider 52 in the first direction with respect to the first fixed part 61.

Preferably, referring to fig. 8, the fifth slides 55 are two, are arranged at intervals along the second direction (indicated by Y direction in fig. 8), and respectively extend along the first direction (indicated by X direction in fig. 8), and the fifth slides 55 and the sixth slides 56 correspond to each other one by one. That is, the sixth sliding members 56 are two and are spaced apart in the second direction. This arrangement contributes to the stability of the movement of the second slider 52 in the first direction with respect to the first fixed portion 61, and thus to the stability of the movement of the second loading portion 22 or the third loading portion 23 in the first direction. In other embodiments, a corresponding number of fifth sliders 55, for example three, four, etc., is selected depending on the application scenario.

In addition, the second sliding member 52 and the fourth link 14 according to the present invention are connected by a second elastic member. The sixth sliding part 56 connected with the second sliding part 52 can be prevented from moving relative to the fifth sliding part 55 due to the action of gravity when the second sliding part 52 is not subjected to the action of external force, so that the installation stability of the second sliding part 52 is improved; that is, when the second slider 52 is not subjected to an external force, the link assembly 10 is stably connected to the first fixing portion 61 to be stably supported on the reference plate 60.

With continued reference to fig. 8, the third slider 53 and the fifth slider 55 are preferably integrally formed. Preferably, the fourth slider 54 and the sixth slider 56 are spaced apart in the first direction. In other words, the fourth slider 54 and the sixth slider 56 share the same slider. The structure is compact and firm.

Referring to fig. 7 and 9, the multi-link loading apparatus 1 of the present invention further includes: a second fixing portion 62, the second fixing portion 62 being vertically mounted to the reference plate 60; the first driving assembly 70 is arranged on the second fixing portion 62, connected with the first fixing member 31, and used for driving the first fixing member 31 to move along the first direction; and a second driving assembly 80 disposed on the second fixing portion 62, connected to the second fixing member 32, and configured to drive the second fixing member 32 to move along the first direction.

That is, in the present embodiment, the first driving unit 70 and the second driving unit 80 are simultaneously provided to the second fixing portion 62, that is, the first driving unit 70 and the second driving unit 80 share the second fixing portion 62. Preferably, the first driving assembly 70 and the second driving assembly 80 are respectively mounted on different fixing portions. Further preferably, the second fixing portion 62 is provided with a first driving component 70 or a second driving component 80.

Preferably, referring to fig. 9, the second fixing portion 62 extends in a third direction (shown in a Z direction in fig. 9) perpendicular to the first direction. Preferably, the first direction, the second direction and the third direction are perpendicular to each other.

Referring to fig. 8 and 9, the first driving assembly 70 of the present invention is connected to the first fixing member 31 through a first connecting member 71, and is used for driving the first fixing member 31 to move relative to the second fixing portion 62 along the first direction. Specifically, referring to fig. 9 to 11, the multi-link loading apparatus 1 of the present invention further includes: a seventh slider 57 connected to the second fixing portion 62; and an eighth sliding member 58 connected to the first fixed member 31, wherein the seventh sliding member 57 and the eighth sliding member 58 are engaged with each other, and the seventh sliding member 57 and the eighth sliding member 58 can slide relatively in the first direction. The seventh sliding part 57 and the eighth sliding part 58 abut at least during the movement of the first fixed part 31 relative to the second fixed part 62 in the first direction.

It should be noted that the type of the sliding member of the present invention is not limited, and the sliding member may be engaged with the sliding member in different manners, so that the sliding member can slide relatively. In this embodiment, the seventh sliding member 57 is a sliding rail, the eighth sliding member 58 is a sliding block, and the eighth sliding member 58 is sleeved on the seventh sliding member 57 to realize mutual matching. In other embodiments, other types of slides are possible, such as guide rods and sliding sleeves.

Preferably, with reference to fig. 9 and 11, in the second direction (indicated by the direction Y in fig. 9 and 11), the first connecting element 71 is located at least partially between the eighth sliding element 58 and the first fixed element 31, and is connected to the eighth sliding element 58 and the first fixed element 31, respectively.

Preferably, referring to fig. 11, the seventh sliding members 57 of the present invention are two, are spaced apart from each other along the third direction (shown by the Z direction in fig. 11), and extend along the first direction (shown by the X direction in fig. 11), and the eighth sliding members 58 and the seventh sliding members 57 correspond to each other one by one. That is, the eighth sliding members 58 are two and are spaced apart in the third direction. This arrangement facilitates the stability of the movement of the first fixing member 31 in the first direction with respect to the second fixing portion 62, thereby facilitating the stability of the movement of the first loading portion 21 in the first direction. In other embodiments, a corresponding number of seventh sliders 57, for example three, four, etc., is selected depending on the application scenario.

Referring to fig. 8 and 9, the first driving assembly 70 of the present invention is a screw assembly, but is not limited thereto, and in other embodiments, the driving assembly is a linear motor. In the present embodiment, the first driving assembly 70 includes: a first lead screw 72 extending in the first direction (indicated by X direction in fig. 8 and 9), the first lead screw 72 being connected to a first motor 73; and a first lead screw nut 74 sleeved on the first lead screw 72, wherein the first lead screw nut 74 is connected with the first fixing member 31 through the first connecting member 71. Therefore, the first lead screw 72 and the first lead screw nut 74 cooperate to convert the circumferential motion into a linear motion, the first lead screw nut 74 moves along the first direction relative to the first lead screw 72 to drive the first connecting member 71 to move along the first direction, and then drives the first fixing member 31 to move along the first direction, and the first fixing member 31 drives the second connecting rod 12 or the third connecting rod 13 to drive the first loading portion 21 to move along the first direction.

Referring to fig. 7 and 9, the first lead screw 72 is mounted on the reference plate 60 through a first fixing seat 70a, and the first lead screw 72 is mounted on the second fixing part 62 through a second fixing seat 70 b; preferably, the first and

second holders

70a and 70b are located on opposite sides of the reference plate 60 in the first direction. The first lead screw nut 74 is located between the first fixed seat 70a and the second fixed seat 70b, and the first fixed seat 70a and the second fixed seat 70b support the first lead screw 72 together. The first connecting piece 71 is a sheet metal part and has rigidity, the first connecting piece 71 is light and convenient through the bent steel sheet part structure, and the first lead screw nut 74 drives the first connecting piece 71 to move along the first direction, so that high speed and high precision are obtained. And meanwhile, the light weight is realized, the rigidity is provided, the eighth sliding piece 58 and the first connecting piece 71 are prevented from deflecting in the process of moving along the first direction, and the transmission precision is obtained.

Referring to fig. 7 to 10, the second driving assembly 80 is connected to the second fixing member 32 through a second connecting member 81, and is configured to drive the second fixing member 32 to move relative to the second fixing portion 62 along the first direction. Specifically, referring to fig. 9 to 11, the multi-link loading apparatus 1 of the present invention further includes: a ninth slider 59 connected to the second fixing portion 62; and a tenth sliding member 510 connected to the second fixed member 32, wherein the ninth sliding member 59 and the tenth sliding member 510 are engaged with each other, and the ninth sliding member 59 and the tenth sliding member 510 can slide relatively in the first direction. The ninth slider 59 and the tenth slider 510 abut at least during the movement of the second fixed part 32 relative to the second fixed part 62 in the first direction.

It should be noted that the type of the sliding member of the present invention is not limited, and the sliding member may be engaged with the sliding member in different manners, so that the sliding member can slide relatively. In this embodiment, the ninth sliding member 59 is a sliding rail, the tenth sliding member 510 is a sliding block, and the tenth sliding member 510 is sleeved on the ninth sliding member 59 to realize mutual engagement. In other embodiments, other types of slides are possible, such as guide rods and sliding sleeves.

Preferably, referring to fig. 9 and 11, in the second direction (shown in the Y direction in fig. 9 and 11), the second connecting member 81 is at least partially located between the tenth sliding member 510 and the second fixing member 32, and is connected to the tenth sliding member 510 and the second fixing member 32, respectively.

Preferably, referring to fig. 11, the ninth sliding members 59 are two, are spaced apart from each other along the third direction (shown in the Z direction in fig. 11), and extend along the first direction (shown in the X direction in fig. 11), and the tenth sliding member 510 and the ninth sliding member 59 correspond to each other one by one. That is, the tenth slider 510 is two, and is spaced apart in the third direction. This arrangement facilitates the stability of the movement of the second fixing member 32 in the first direction with respect to the second fixing portion 62, and thus the stability of the movement of the second loading portion 22 or the third loading portion 23 in the first direction. In other embodiments, a corresponding number of ninth slides 59, for example three, four, etc., is selected depending on the application scenario.

With continued reference to fig. 10 and 11, the seventh slider 57 and the ninth slider 59 are preferably integrally formed. Preferably, the eighth slider 58 and the tenth slider 510 are spaced apart in the first direction. In other words, the eighth slider 58 and the tenth slider 510 share the same slider. The structure is compact and firm.

Referring to fig. 7 to 10, the second driving assembly 80 of the present invention is a screw assembly, but is not limited thereto, and in other embodiments, the driving assembly is a linear motor. In this embodiment, the second driving assembly 80 includes: a second lead screw 82 extending in the first direction (indicated by X direction in fig. 10), the second lead screw 82 being connected to a second motor 83; and a second lead screw nut 84 sleeved on the second lead screw 82, wherein the second lead screw nut 84 is connected with the second fixing member 32 through the second connecting member 81. Therefore, the second lead screw 82 and the second lead screw nut 84 are matched to convert the circumferential motion into a linear motion, the second lead screw nut 84 moves along the first direction relative to the second lead screw 82 to drive the second connecting member 81 to move along the first direction, and then drives the second fixing member 32 to move along the first direction, and the second fixing member 32 drives the fourth connecting rod 14 or the third connecting rod 13 to drive the second loading portion 22 to move along the first direction.

Referring to fig. 7, 9 and 10, the second lead screw 82 is mounted on the reference plate 60 through a third fixing seat 80a, and the second lead screw 82 is mounted on the second fixing part 62 through a fourth fixing seat 80 b; preferably, the third and

fourth fixing seats

80a and 80b are located at opposite sides of the reference plate 60 in the first direction. The second lead screw nut 84 is located between the third fixing seat 80a and the fourth fixing seat 80b, and the third fixing seat 80a and the fourth fixing seat 80b support the second lead screw 82 together. The second connecting member 81 is a sheet metal part and has rigidity, the second connecting member 81 ensures portability through a bent steel sheet part configuration, and the second lead screw nut 84 drives the second connecting member 81 to move along the first direction, so that high speed and high precision are obtained. While being light and convenient, rigidity is provided, the tenth sliding member 510 and the second connecting member 81 are prevented from deflecting during the movement in the first direction, and transmission precision is obtained.

Referring to fig. 9, the multi-link loading apparatus 1 of the present invention further includes: a third fixing portion 63 vertically mounted on the reference plate 60; and a third driving assembly 90 disposed on the third fixing portion 63, connected to the third fixing member 33, and configured to drive the third fixing member 33 to move along the first direction.

Preferably, the third fixing portion 63 extends in a third direction (extending in the Z direction in fig. 9) perpendicular to the first direction. That is, the third fixing portion 63 is parallel to the second fixing portion 62. Preferably, the first direction, the second direction and the third direction are perpendicular to each other.

Referring to fig. 9 and 10, the third driving assembly 90 of the present invention is connected to the third fixing member 33 through a third connecting member 91, for driving the third fixing member 33 to move relative to the third fixing portion 63 along the first direction. Specifically, referring to fig. 10, 12 to 13, the multi-link loading device 1 of the present invention further includes: an eleventh slider 511 connected to the third fixing portion 63; and a twelfth sliding member 512 connected to the third fixed member 33, wherein the eleventh sliding member 511 and the twelfth sliding member 512 are engaged with each other, and the eleventh sliding member 511 and the twelfth sliding member 512 can slide in the first direction. At least during the movement of the third fixed part 33 relative to the third fixed part 63 along the first direction, the eleventh sliding part 511 and the twelfth sliding part 512 are attached.

It should be noted that the type of the sliding member of the present invention is not limited, and the sliding member may be engaged with the sliding member in different manners, so that the sliding member can slide relatively. In this embodiment, the eleventh sliding member 511 is a sliding rail, the twelfth sliding member 512 is a sliding block, and the twelfth sliding member 512 is sleeved on the eleventh sliding member 511 to realize mutual cooperation. In other embodiments, other types of slides are possible, such as guide rods and sliding sleeves.

Preferably, referring to fig. 9, 10 and 13, along the second direction (shown in the Y direction in fig. 13), the third connecting member 91 is at least partially located between the twelfth sliding member 512 and the third fixing member 33, and is connected to the twelfth sliding member 512 and the third fixing member 33, respectively.

Preferably, referring to fig. 12 and 13, the eleventh sliding parts 511 are two, are arranged at intervals along the third direction (shown in the Z direction in fig. 12 and 13), and respectively extend along the first direction (shown in the X direction in fig. 12 and 13), and the twelfth sliding parts 512 and the eleventh sliding parts 511 are in one-to-one correspondence. That is, the twelfth sliding members 512 are two and are spaced apart from each other in the third direction. This arrangement facilitates the stability of the movement of the third fixing member 33 in the first direction with respect to the third fixing portion 63, and thus the stability of the movement of the second loading portion 22 or the third loading portion 23 in the first direction. In other embodiments, a corresponding number of eleventh sliders 511, e.g., three, four, etc., are selected according to the application scenario.

Referring to fig. 9, the third driving assembly 90 of the present invention is a screw assembly, but is not limited thereto, and in other embodiments, the driving assembly is a linear motor. In this embodiment, the third driving assembly 90 includes: a third lead screw 92 extending in the first direction (indicated by X direction in fig. 9), the third lead screw 92 being connected to a third motor 93; and a third lead screw nut 94 sleeved on the third lead screw 92, wherein the third lead screw nut 94 is connected with the third fixing member 33 through the third connecting member 91. Therefore, the third lead screw 92 and the third lead screw nut 94 are matched to convert the circumferential motion into a linear motion, the third lead screw nut 94 moves along the first direction relative to the third lead screw 92 to drive the third connecting member 91 to move along the first direction, and then the third fixing member 33 is driven to move along the first direction, and the third fixing member 33 drives the fourth connecting rod 14 or the third connecting rod 13 to drive the third loading portion 23 to move along the first direction.

Referring to fig. 7 and 9, the third screw 92 is mounted on the reference plate 60 through a fifth fixing seat 90a, and the third screw 92 is mounted on the third fixing part 63 through a sixth fixing seat 90 b; preferably, the fifth and

sixth fixing seats

90a and 90b are located at opposite sides of the reference plate 60 in the first direction. The third lead screw nut 94 is located between the fifth fixing seat 90a and the sixth fixing seat 90b, and the fifth fixing seat 90a and the sixth fixing seat 90b support the third lead screw 92 together. The third connecting member 91 is a sheet metal part and has rigidity, and the third lead screw nut 94 drives the third connecting member 91 to move along the first direction, so that high speed and high precision are obtained. The weight is light, rigidity is provided, the deflection of the twelfth sliding piece 512 and the third connecting piece 91 in the process of moving along the first direction is prevented, and transmission precision is obtained.

Referring to fig. 9, 10 and 14, a supporting member 64 is disposed on the first fixing portion 61, and the second connecting rod 12 and the supporting member 64 are connected by a third elastic member 65. Preferably, the third elastic member 65 is a spring. The third elastic member 65 can perform a restoring function on one hand, and can prevent the second link 12 from moving in a direction toward the reference plate 60 due to gravity when the second link 12 is not subjected to an external force, so as to improve the installation stability of the link assembly 10.

Preferably, referring to fig. 10, the supporting member 64 includes a first portion 64b, a second portion 64c and a third portion 64a which are vertically connected, the first portion 64b of the supporting member 64 and the third portion 64a of the supporting member 64 are disposed at intervals along the first direction (shown by X direction in fig. 10), and the second portion 64c of the supporting member 64 extends along the first direction; the first portion 64b of the supporting member 64 is disposed on a side of the first fixing portion 61 facing away from the reference plate 60, the third portion 64a of the supporting member 64 is located above the second link 12, and referring to fig. 13 and 14, one end of the third elastic member 65 is connected to the third portion 64a of the supporting member 64, and the other end is connected to the second link 12.

The utility model also provides a microscope, including above-mentioned arbitrary embodiment many connecting rods loading device 1.

Referring to fig. 15 and 16, the present invention provides a clamping device 100 including a loading connection portion 110, a first mounting portion 130, and a second mounting portion 140. The loading connecting portion 110 extends along a first direction (shown as an X direction in fig. 15 and 16), one end of the loading connecting portion is connected to the loading ram 120, the other end of the loading connecting portion is connected to the first guide portion 111, and the first guide portion 111 extends along the first direction. Preferably, the loading connection portion 110 and the first guide portion 111 each have a rod shape. The loading indenter 120 is used to apply a loading force to the object to be tested to complete a mechanical test, such as a vickers hardness test or a micro vickers hardness test of the object to be tested. Preferably, the loading ram 120 is a diamond ram. Depending on the mechanical test requirements, a corresponding loading ram 120 is selected. In this embodiment, the first mounting portion 130 is supported on the first mounting portion 130, the first mounting portion 130 is supported on the second mounting portion 140, and the loading connecting portion 110 extends out of the second mounting portion 140 along the first direction.

When a mechanical test is performed, firstly, the first installation part 130 can move relative to the second installation part 140 in the first direction after receiving a loading force, the first guide part 111 moves along with the first installation part 130, the first guide part 111 drives the loading connection part 110 to move in the first direction while moving, and then the loading pressure head 120 connected with the loading connection part 110 also moves in the first direction, for example, moves towards a measured object. At this stage, the first mounting portion 130 is driven to move rapidly in the first direction, for example, by applying a loading force to the first mounting portion 130, so that the loading ram 120 can move rapidly into contact with the object to be tested, thereby achieving coarse adjustment.

Next, the first guide portion 111 is movable in the first direction relative to the first mounting portion 130 upon receiving a biasing force. For example, after the loading ram 120 moves rapidly to contact with the object to be tested, the first guide portion 111 applies a loading force to the first guide portion 111, and the loading force is slowly transmitted to the object to be tested by the loading ram 120, so that the precision is high, fine adjustment is realized, and a mechanical test, such as a vickers hardness test of the object to be tested, is completed. This improves loading efficiency. Equivalently, the first mounting portion 130 and the first guide portion 111 in the clamping device 100 of the present invention can receive the loading force, respectively.

In addition, the first guide part 111 can move along the first direction along with the first mounting part 130, so that the consistency of movement in the loading process is ensured, and the error of a mechanical test is reduced.

Referring to fig. 7 to 10, the multi-link loading device 1 according to the foregoing embodiment is preferably used to apply a loading force to the first mounting portion 130 and the first guide portion 111 in the clamping device 100. Specifically, first, follow through third motor 93 drive third loading portion 23 first direction rapid movement to with first installation department 130 contact, to first installation department 130 application loading power, drive first installation department 130 and follow first direction rapid movement, first guide part 111 follows first installation department 130 synchronous motion drives loading connecting portion 110 edge when first guide part 111 moves first direction movement, and then the loading pressure head 120 who is connected with loading connecting portion 110 also can follow first direction movement. Thus, the loading ram 120 can be moved rapidly into contact with the object being tested. Preferably, the stroke of movement of the first mounting portion 130 during this process is between 8mm and 10 mm. Preferably, the third fixing member 33 drives the third loading portion 23 to move rapidly so as to rapidly move the loading ram 120 to contact the object to be measured and move reversely for a distance.

Referring to fig. 7 to 10, after the loading ram 120 contacts the object to be measured, the first guide portion 111 moves relative to the first mounting portion 130 in a direction away from the object to be measured, and the third motor 93 stops operating. At this time, different loading parts are selected according to the force value required by the mechanical test. Preferably, the first loading part 21 is driven by the first motor 73 to move slowly along the first direction to contact with the first guide part 111, and loading force is applied to the first guide part 111. Preferably, the first guide portion 111 is in contact with the first loading portion 21 before the first motor 73 starts to operate. Under the driving of the first motor 73, the first loading portion 21 applies a loading force to the first guide portion 111, and the first guide portion 111 moves relative to the first mounting portion 130. The first guide portion 111 transmits the loading force to the object to be tested through the loading ram 120, and forms an indentation on the object to be tested, thereby completing a mechanical test, such as a vickers hardness test, on the object to be tested. Preferably, the first loading portion 21 applies a large force loading force, for example, a force value of 300g to 63kg, to the first guide portion 111. Preferably, the stroke of the movement of the first guide portion 111 in this process is 1mm to 2 mm.

Referring to fig. 7 to 10, alternatively, the second loading unit 22 is driven by the second motor 83 to move slowly along the first direction to contact with the first guide unit 111, so as to apply a loading force to the first guide unit 111. Preferably, the first guide portion 111 is in contact with the first loading portion 21 before the second motor 83 starts to operate. Under the driving of the second motor 83, the second loading portion 22 applies a loading force to the first guide portion 111, and the first guide portion 111 moves relative to the first mounting portion 130. The first guide portion 111 transmits the loading force to the object to be tested through the loading indenter 120, and forms an indentation on the object to be tested, thereby completing a mechanical test, such as a test on the micro vickers hardness of the object to be tested. Preferably, the second loading portion 22 applies a small force value loading force, for example, a force value of 1g to 2kg, to the first guide portion 111. Preferably, the stroke of the movement of the first guide portion 111 in this process is 1mm to 2 mm.

With continuing reference to fig. 15 and 16 in conjunction with fig. 17 and 18, the clamping device 100 of the present invention further includes: a second guide portion 112 supported by the first mounting portion 130, the second guide portion 112 being parallel to the first guide portion 111, i.e., the second guide portion 112 extends in the first direction; and a first linkage 150 and a second linkage 160 on opposite sides of the first mounting portion 130 in the first direction, the second linkage 160 being closer to the loading ram 120 than the first linkage 150; one end of the first linkage part 150 is connected to the first guide part 111, the other end is connected to the second guide part 112, one end of the second linkage part 160 is connected to the first guide part 111, and the other end is connected to the second guide part 112.

Under the interlocking action of the first and second interlocking

parts

150 and 160, the first guide part 111 moves in the first direction, and simultaneously, the second guide part 112 moves in the first direction in synchronization with the first guide part 111. Because the first guide part 111 and the second guide part 112 are arranged in parallel and are linked through the first linkage part 150 and the second linkage part 160, the first guide part 111 moves synchronously along with the first installation part 130 in the first direction, or the first guide part 111 receives loading force and then moves relative to the first installation part 130 in the first direction, so that the consistency of the movement of the first guide part 111 in the first direction is ensured, and lateral deviation cannot occur. Preferably, the first direction is a vertical direction. Thus, the loading connection portion 110 connected to the first guide portion 111 does not move laterally in the first direction, i.e., does not move away from the first direction. Thus, the loading ram 120 connected to the loading connection portion 110 may contact the object to be tested in the first direction to apply a loading force to form an indentation, which improves the accuracy of the mechanical test result.

Preferably, the end of the first guide portion 111 facing away from the loading ram 120 is longer than the end of the second guide portion 112 facing away from the loading ram 120 in a direction away from the loading ram 120 (direction C in fig. 15). As mentioned above, after the loading ram 120 contacts the object to be tested, the first guiding portion 111 will move relative to the first mounting portion 130 in a direction away from the object to be tested, and the end of the first guiding portion 111 facing away from the loading ram 120 is lengthened to facilitate contact with the first loading portion 21 or the second loading portion 22 to receive the loading force. The length of the first guide portion 111 is not limited, and the first guide portion may be configured to contact the first loading portion 21 or the second loading portion 22 to apply a loading force to the object to be tested in conjunction with the movement stroke of the first loading portion 21 or the second loading portion 22 of the multi-link loading device 1.

Referring to fig. 15, 17 and 18, the first mounting portion 130 is provided with a first supporting portion 131 and a second supporting portion 132 connected to each other, the first guiding portion 111 is supported by the first supporting portion 131, and the second guiding portion 112 is supported by the second supporting portion 132. The first guide portion 111 can move in synchronization with the first support portion 131, and the second guide portion 112 can move in synchronization with the second support portion 132. Further, after the first guide portion 111 receives the biasing force, the second guide portion 112 and the first guide portion 111 are linked, the first guide portion 111 is movable relative to the first support portion 131 in the first direction, and the second guide portion 112 is movable relative to the second support portion 132 in the first direction.

Preferably, the first and second supporting

parts

131 and 132 are coupled by bolts. Further preferably, the first supporting portion 131 and the second supporting portion 132 are attached and connected in a direction (indicated by N direction in fig. 17) perpendicular to the first direction.

Preferably, the first guide part 111 and the first support part 131 form a first linear bearing, and the second guide part 112 and the second support part 132 form a second linear bearing. The first guide part 111 and the first support part 131 are in high-precision lubrication fit, so that the first guide part 111 can freely move up and down in the first direction, and the first guide part 111 is prevented from being subjected to the friction force of the first support part 131 in the movement process of the mechanical device, namely, the friction force is reduced to the minimum. The second guide part 112 and the second support part 132 are in high-precision lubrication fit, so that the second guide part 112 can freely move up and down in the first direction, and the second guide part 112 is prevented from being subjected to the friction force of the second support part 132 in the movement process of the mechanical device, namely, the friction force is reduced to the minimum.

Referring to fig. 15, in a direction away from the loading ram 120 (direction C in fig. 15), an end of the first supporting portion 131 facing away from the loading ram 120 is flush with an end of the second supporting portion 132 facing away from the loading ram 120, and the first interlocking portion 150 has a flat plate shape. More preferably, referring to fig. 18, an end of the first support portion 131 facing the loading ram 120 is longer than an end of the second support portion 132 facing the loading ram 120 in a direction (indicated by direction D in fig. 18) toward the loading ram 120; the second linkage 160 includes a first portion 161, a second portion 162, and a third portion 163 that are vertically connected, the first portion 161 and the third portion 163 are disposed at an interval along the first direction, and the second portion 162 extends along the first direction; the first portion 161 is connected to an end of the first guide portion 111 protruding the first support portion 131, and the third portion 163 is connected to an end of the second guide portion 112 protruding the second support portion 132. With this arrangement, the uniformity of movement of the first guide portion 111 in the first direction is further ensured.

Referring to fig. 15 and 16 in conjunction with fig. 19, the second mounting portion 140 of the present invention includes: a base 141 and a mounting seat 142 provided on the base 141, the mounting seat 142 extending in the first direction (shown by the X direction in fig. 19). The base 141 is used to secure the holding device 100 to a microscope (not shown). The base 141 is provided with a through hole 141a, and the loading connecting portion 110 extends out of the through hole 141a along the first direction. Preferably, the first mounting portion 130 and the loading ram 120 are located on opposite sides of the base 141 in the first direction.

Referring to fig. 20 in conjunction with fig. 15 to 17, the first mounting portion 130 includes: the first, second and

third portions

133, 134 and 135 are connected in this order, and the first, second and

third portions

133, 134 and 135 of the first mounting portion 130 are preferably connected vertically. The first portion 133 and the third portion 135 are spaced apart in a direction (indicated by M direction in fig. 17) perpendicular to the first direction, the mount 142 is located between the first portion 133 and the second portion 135, and the first guide portion 111 and the second guide portion 112 are located between the first portion 133 and the mount 142. Preferably, the first support portion 131 and the second support portion 132 are connected to the first portion 133, and the connection manner is not limited, and in this embodiment, the first support portion 131 and the second support portion 132 are connected to the first portion 133 by bolts.

In this embodiment, the third portion 135 is slidably connected to the mounting base 142 via a sliding assembly 190, which further ensures the consistency of the movement of the first guide portion 111 in the first direction. It should be noted that the type of the sliding assembly 190 of the present invention is not limited, and the sliding assembly 190 may be engaged with each other in different manners, so as to generate relative sliding. In this embodiment, the sliding assembly 190 includes a sliding rail 191 and a sliding block 192. In other embodiments, other types of slides are possible, such as guide rods and sliding sleeves. The sliding rail 191 is connected with the base 141 and extends along the first direction; the sliding block 192 is connected to the third portion 135, the sliding block 192 is located between the sliding rail 191 and the third portion along a direction perpendicular to the first direction (shown as the direction M in fig. 17), and the sliding rail 191 and the sliding block 192 are mutually matched, so that the sliding rail 191 and the sliding block 192 can slide relatively in the first direction. The sliding rail 191 is attached to the sliding block 192 at least during the movement of the first mounting portion 130 relative to the second mounting portion 140 along the first direction.

In this embodiment, the first mounting portion 130 is reversely buckled on the mounting seat 142 through the third portion 135, and a sliding connection is realized, which further ensures the consistency of the movement of the first guiding portion 111 in the first direction and prevents the first guiding portion 111 from moving away from the first direction.

Referring to fig. 15 and 17, the mounting seat 142 of the present invention has an extending end 143, preferably, the extending end 143 extends along a direction perpendicular to the first direction (indicated by direction N in fig. 17), and the second portion 134 can be abutted against the extending end 143 along a direction (indicated by direction C in fig. 15) away from the loading ram 120 under the elastic force. That is, in the initial state, the first mounting portion 130 does not receive the loading force, and the second portion 134 of the first mounting portion 130 abuts against the extending end 143 of the second mounting portion 140. Upon receipt of the loading force of the first mounting portion 130, the second portion 134 of the first mounting portion 130 separates from the extended end 143 of the second mounting portion 140. Preferably, the first portion 133 of the first mounting portion 130 receives a loading force.

Specifically, referring to fig. 15 to 16 and fig. 21 and 22, the holding device 100 further includes: a third mounting portion 170, wherein the third mounting portion 170 at least partially extends along the first direction, and the third mounting portion 170 is connected to the base 141; and a fourth elastic member 180 having one end connected to the third mounting portion 170 and the other end connected to the second portion 134 along the first direction, so that the second portion 134 abuts against the extension end 143. Preferably, the fourth elastic member 180 is a spring. In the initial state, the second portion 134 of the first mounting portion 130 abuts against the extension end 143 of the second mounting portion 140 due to the elastic force of the fourth elastic member 180.

Preferably, referring to fig. 21 and 22, the third mounting portion 170 includes a first portion 171, a second portion 172 and a third portion 173 that are vertically connected, the first portion 171 and the third portion 173 of the third mounting portion 170 are spaced apart from each other along the first direction, the second portion 172 of the third mounting portion 170 extends along the first direction, the first portion 171 of the third mounting portion 170 is disposed on a side of the base 141 facing away from the loading ram 120, and the one end of the fourth elastic member 180 is connected to the third portion 173 of the third mounting portion 170. That is, one end of the fourth elastic member 180 is connected to the third portion 173 of the third mounting part 170, and the other end is connected to the second portion 134 of the first mounting part 130.

Preferably, referring to fig. 21, the third portion 173 of the third mounting part 170 is positioned above the first mounting part 130. This facilitates the fourth elastic member 180 to stretch the first mounting portion 130 to abut against the extended end 143 of the second mounting portion 140.

In addition, the first portion 171 and the third portion 173 of the third mounting part 170 are spaced apart from the second portion 134 of the first mounting part 130 in a direction (indicated by an N direction in fig. 17) perpendicular to the first direction, respectively, and the second portion 172 of the third mounting part 170 is parallel to the second portion 134 of the first mounting part 130. This arrangement makes the clamping device 100 compact.

The utility model also provides a microscope, include any one of the above-mentioned embodiments add and hold device 100.

To sum up, the above embodiments provided by the present invention are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A multi-link loading device, comprising:

the connecting rod assembly comprises a first fixing piece, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod and a second fixing piece which are sequentially connected in a rotating manner, the second connecting rod and the fourth connecting rod are arranged at intervals along a first direction, the second connecting rod and the fourth connecting rod respectively extend along a second direction, and an included angle between the second direction and the first direction is larger than 0 degree;

a first loading part and a second loading part respectively extending along the first direction;

the first fixing piece or the third connecting rod can move along the first direction so as to drive the second connecting rod to drive the first loading part to move along the first direction; the second fixing piece or the third connecting rod can move along the first direction to drive the fourth connecting rod to drive the second loading part to move along the first direction.

2. The multi-link loading apparatus according to claim 1,

the first fixing piece is connected with the first connecting rod in a rotating mode around a first axis, the second connecting rod is connected with the third connecting rod in a rotating mode around a second axis, the first axis is parallel to the second axis, the first axis is located on a first plane, the second axis is located on a second plane, and a point of action of the second connecting rod on the first loading portion on which action force is exerted is located on a third plane;

3. The multi-link loading apparatus of claim 2, wherein the first distance is D1, and the second distance is D2, 1/20 ≦ D2/D1 ≦ 1/3.

4. The multi-link loading apparatus according to claim 2,

the second fixing piece is connected with the fifth connecting rod in a rotating mode around a fourth axis, the third connecting rod is connected with the fourth connecting rod in a rotating mode around a fifth axis, the fourth axis is parallel to the fifth axis, the fourth axis is located on a fourth plane, the fifth axis is located on a fifth plane, and a point of action of the fourth connecting rod on applying action force to the second loading portion is located on a sixth plane;

5. The multi-link loading apparatus of claim 4 wherein the third distance is D3 and the fourth distance is D4, 1/20 and D4/D3 and 1/3.

6. The multi-link loading apparatus of claim 4 further comprising: the third fixing piece is connected with the third connecting rod and can move along the first direction so as to drive the fourth connecting rod to drive the third loading part to move along the first direction.

7. The multi-link loading device of claim 6 wherein the third loading portion moves at a greater speed than the first loading portion in the first direction.

8. The multi-link loading device according to claim 7, wherein the third loading portion and the second loading portion are synchronously movable in the first direction.

9. The multi-link loading device according to claim 8, wherein the second fixing member or the third fixing member is capable of moving in the first direction to drive the fourth link to drive the second loading portion and the third loading portion to move synchronously in the first direction.

10. The multi-link loading device of claim 8 wherein, in the first direction, the loading force of the first loading portion is greater than the loading force of the second loading portion.

11. The multi-link loading device according to claim 6, wherein the third loading portion and the first loading portion are disposed in parallel; the second loading part is positioned in the first loading part and can move relative to the first loading part along the first direction.

12. The multi-link loading device of claim 11 wherein, in the first direction, an end of the first loading portion facing the second link is longer than an end of the third loading portion facing the fourth link, and an end of the third loading portion facing away from the fourth link is longer than an end of the first loading portion facing away from the second link.

13. The multi-link loading apparatus of claim 12, wherein the length of the third loading portion is L1, and the length of the third loading portion that is longer than the first loading portion is L2, wherein 1/20 ≦ L2/L1 ≦ 1/18.

14. The multi-link loading apparatus according to claim 12, wherein an end of the third loading portion facing away from the fourth link is longer than an end of the second loading portion facing away from the second link.

15. The multi-link loading apparatus of claim 14, wherein the length of the third loading portion is L1, and the length of the third loading portion that is longer than the second loading portion is L3, wherein 1/20 ≦ L3/L1 ≦ 1/18.

16. The multi-link loading apparatus of claim 11 further comprising:

17. The multi-link loading apparatus of claim 16 wherein the first lobe is in rolling contact with the first slide.

18. The multi-link loading apparatus of claim 17 wherein the first lobe has a first rolling element disposed thereon, the first rolling element being in rolling contact with the first slider, the first rolling element being rotatable about a third axis, the third axis being in the third plane and parallel to the first axis.

19. The multi-link loading apparatus of claim 16 wherein the first lobe is proximate the rotational connection of the second link and the third link.

20. The multi-link loading device according to claim 16, wherein a first force value sensor is provided on the first slider for feeding back the loading force of the first loading portion.

21. The multi-link loading apparatus of claim 16 wherein the first slider and the second link are connected by a first resilient member.

22. The multi-link loading apparatus of claim 11 further comprising:

23. The multi-link loading apparatus of claim 22 wherein the second lobe is in rolling contact with the second slide.

24. The multi-link loading apparatus of claim 23 wherein a second rolling element is provided on the second lobe, the second rolling element being in rolling contact with the second slider, the second rolling element being rotatable about a sixth axis, the sixth axis being in the third plane and parallel to the fourth axis.

25. The multi-link loading apparatus of claim 22 wherein the second lobe is proximate a rotational connection of the third link and the fourth link.

26. The multi-link loading device according to claim 22, wherein a second force value sensor is provided on the second slider for feeding back the loading force of the second loading portion.

27. The multi-link loading device according to claim 26, wherein in the second direction, one end of the second force value sensor is located within the first loading portion and is movable relative to the first loading portion in the first direction, and the second loading portion is provided on the second force value sensor.

28. The multi-link loading apparatus of claim 22 wherein the second slider and the fourth link are connected by a second resilient member.

29. The multi-link loading apparatus of claim 1 wherein the third link has a first portion, a second portion and a third portion connected, wherein the first portion and the third portion are spaced apart in the first direction, wherein the first portion and the third portion each extend in the second direction, wherein the first portion is rotationally connected to the second link, and wherein the third portion is rotationally connected to the fourth link.

30. The multi-link loading apparatus of claim 29 wherein the third portion is pivotally coupled to the fourth link through the first loading portion, the third portion and the first loading portion being capable of relative movement in the first direction.

31. The multi-link loading apparatus of claim 1 wherein the first and second mounts are spaced apart along the first direction.

32. The multi-link loading apparatus of claim 1 wherein the first attachment member extends at least partially in the first direction, the second attachment member extends at least partially in the first direction, and the third link extends at least partially in the first direction.

33. The multi-link loading apparatus of claim 16, further comprising:

34. The multi-link loading apparatus of claim 33 further comprising:

a third sliding member connected to the first fixing portion;

35. The multi-link loading apparatus of claim 34 wherein there are two of said third slides spaced apart along said second direction and extending along said first direction, respectively, and wherein there is a one-to-one correspondence between said fourth slides and said third slides.

36. The multi-link loading apparatus of claim 22 further comprising:

37. The multi-link loading apparatus of claim 36 further comprising:

a fifth slider connected to the first fixing portion;

38. The multi-link loading apparatus according to claim 37, wherein the number of the fifth sliders is two, and the fifth sliders are spaced apart in the second direction and extend in the first direction, respectively, and the fifth sliders and the sixth sliders are in one-to-one correspondence.

39. The multi-link loading apparatus of claim 6, further comprising:

a second fixing portion vertically mounted to the reference plate;

40. The multi-link loading apparatus of claim 39 wherein the second fixed portion extends in a third direction, the third direction being perpendicular to the first direction.

41. The multi-link loading apparatus of claim 40 wherein the first drive assembly is coupled to the first fixed member by a first coupling member for driving the first fixed member in the first direction relative to the second fixed member.

42. The multi-link loading apparatus of claim 41 further comprising:

a seventh sliding member connected to the second fixing portion;

43. The multi-link loading apparatus of claim 42 wherein, in the second direction, the first link is at least partially positioned between and coupled to the eighth slider and the first stationary member, respectively.

44. The multi-link loading apparatus according to claim 42, wherein there are two of the seventh sliding members, the seventh sliding members being spaced apart in the third direction and extending in the first direction, respectively, and the eighth sliding members and the seventh sliding members are in one-to-one correspondence.

45. The multi-link loading apparatus of claim 41 wherein the first drive assembly comprises: the first screw rod extends along the first direction, and is connected with a first motor; and the first lead screw nut is sleeved on the first lead screw and is connected with the first fixing piece through the first connecting piece.

46. The multi-link loading apparatus of claim 40 wherein the second drive assembly is coupled to the second fixed member by a second coupling member for driving the second fixed member in the first direction relative to the second fixed member.

47. The multi-link loading apparatus of claim 46, further comprising:

a ninth slider connected to the second fixing portion;

48. The multi-link loading apparatus of claim 47 wherein, in the second direction, the second link is at least partially positioned between and coupled to the tenth slider and the second stationary member, respectively.

49. The multi-link loading apparatus according to claim 47, wherein there are two of the ninth sliding members, which are spaced apart from each other in the third direction and extend in the first direction, and the tenth sliding member and the ninth sliding member are in one-to-one correspondence.

50. The multi-link loading apparatus of claim 46 wherein the second drive assembly comprises: the second screw rod extends along the first direction and is connected with a second motor; and the second screw rod nut is sleeved on the second screw rod and is connected with the second fixing piece through the second connecting piece.

51. The multi-link loading apparatus of claim 6, further comprising:

a third fixing portion vertically mounted to the reference plate;

52. The multi-link loading apparatus of claim 51 wherein the third fixed portion extends in a third direction, the third direction being perpendicular to the first direction.

53. The multi-link loading apparatus of claim 52 wherein the third driving assembly is coupled to the third fixed member by a third coupling member for driving the third fixed member to move in the first direction relative to the third fixed member.

54. The multi-link loading apparatus of claim 53 further comprising:

an eleventh slider connected to the third fixing portion;

55. The multi-link loading apparatus of claim 54 wherein, in the second direction, the third link is at least partially positioned between and coupled to the twelfth slider and the third stationary member, respectively.

56. The multi-link loading apparatus according to claim 54, wherein there are two of the eleventh sliding members, which are spaced apart from each other in the third direction and extend in the first direction, and the twelfth sliding member and the eleventh sliding member are in one-to-one correspondence.

57. The multi-link loading apparatus of claim 53 wherein the third drive assembly comprises: the third screw rod extends along the first direction and is connected with a third motor; and the third screw rod nut is sleeved on the third screw rod and is connected with the third fixing piece through the third connecting piece.

58. The multi-link loading apparatus according to claim 33 or 36, wherein a support member is provided on the first fixing portion, and the second link and the support member are connected by a third elastic member.

59. The multi-link loading apparatus according to claim 58, wherein the supporting member includes a first portion, a second portion and a third portion that are vertically connected, the first portion of the supporting member and the third portion of the supporting member are disposed at an interval in the first direction, the second portion of the supporting member extends in the first direction, the first portion of the supporting member is disposed on a side of the first fixing portion facing away from the reference plate, the third portion of the supporting member is located above the second link, and the third elastic member has one end connected to the third portion of the supporting member and the other end connected to the second link.

60. A microscope comprising the multi-link loading apparatus of any one of claims 1-59.