CN220610476U - Multifunctional clamping jaw and test tube support - Google Patents

Abstract

The application relates to the technical field of laboratory equipment and discloses a multifunctional clamping jaw and a test tube support. The utility model provides a multifunctional clamping jaw, including a plurality of clamp indicate and drive a plurality of clamp indicate the actuating mechanism that is close to each other or keep away from, press from both sides to indicate including link and the clamping end that links to each other, the link is connected on actuating mechanism, the clamping end has the first clamping face and the second clamping face that deviate from mutually and set up, a plurality of first clamping faces enclose and establish the centre gripping space that forms the centre gripping container, the protrusion is provided with the dop on the second clamping face. The driving mechanism drives the clamping fingers to clamp the container when being closed, the clamping head can clamp the bearing device of the container when the clamping fingers are opened, and the container and the bearing device can be moved by only one clamping jaw, so that the structure is simple, and the operation is convenient. Still provide a test tube holder, including the fixed plate that is used for installing the test tube, offered the groove of grabbing that supplies the dop to pass on the fixed plate, grab the groove and set up to: during the closing or opening process of the clamping fingers, the clamping head can loosen or tightly press the fixing plate.

Description

Multifunctional clamping jaw and test tube support

Technical Field

The application relates to the technical field of laboratory equipment, in particular to a multifunctional clamping jaw and a test tube bracket.

Background

When reagent experiments and tests are performed in laboratories such as scientific research and development and medical detection, it is often necessary to move a container such as a test tube and a carrying device such as a test tube holder. Sometimes, the reagent needs to be in a relatively extreme environment such as high temperature, low temperature or strong acid for experiments, and a person cannot directly contact the taking container and the bearing device, so that the clamping jaw is usually adopted for clamping in the existing method, and in a laboratory where a large number of test tube experiments are required, the mechanical arm is further arranged for automatically controlling the clamping jaw so as to move a target to be clamped.

However, because the container and the container carrying device are inconsistent in appearance and volume, when the targets are switched, different clamping jaws are required to be replaced or different mechanical arms are required to be worn, so that the operation is inconvenient, the experiment efficiency is reduced, and certain cost is increased.

Disclosure of Invention

In order to overcome the defect that different clamping jaws need to be replaced to move the container and the container carrying device, the application provides a multifunctional clamping jaw and a test tube bracket.

In a first aspect, the present application provides a multifunctional clamping jaw, which adopts the following technical scheme:

the utility model provides a multifunctional clamping jaw, includes a plurality of clamp and drives a plurality of press from both sides to indicate the actuating mechanism that is close to or keeps away from each other, press from both sides to indicate including link and clamping end, the link connect in actuating mechanism is last, the clamping end has the first clamping face and the second clamping face that deviate from the setting mutually, a plurality of first clamping face encloses and establishes the centre gripping space that forms the centre gripping container, the protrusion is provided with the dop on the second clamping face.

By adopting the technical scheme, when the container is required to be clamped, the clamping jaw is moved to the position that the container is positioned in the clamping space, the driving mechanism drives the clamping fingers to be close to each other, and the first clamping surfaces of all the clamping fingers are abutted against the container so as to clamp the container; when the carrying device of the container is required to be clamped, a grabbing groove for the clamping head to pass through is correspondingly formed in the carrying device, the driving mechanism drives the clamping fingers to be far away from each other and open, the second clamping surface of the clamping fingers is abutted against the groove wall of the grabbing groove, and the top surface of the clamping head is abutted against the bottom surface of the carrying device, so that the clamping jaw can clamp and move the carrying device; only need use a clamping jaw even a arm of being connected with the clamping jaw just can realize moving container and container's carrier device, simple structure, reduce the cost, convenient operation has moreover still improved experimental efficiency.

Optionally, a clamping groove is formed in the second clamping surface, the clamping groove penetrates through two side surfaces of the clamping finger, which are adjacent to the second clamping surface, and the clamping groove is far away from the inner wall of the connecting end to form the side wall of the clamping head.

Through adopting above-mentioned technical scheme, the width of draw-in groove sets up to be unanimous or slightly greater than the thickness of carrying device by the thickness of centre gripping position, when the clamp finger presss from both sides and gets carrying device, and the gliding possibility of carrying device can be restricted to the cell wall of draw-in groove, makes the clamping jaw can more stably hold in carrying device.

Optionally, an anti-slip layer is disposed on the first clamping surface.

Through adopting above-mentioned technical scheme, the resistance between anti-skidding layer accessible structure or material increase first clamping face and the container to make clamping jaw can more stably grasp the container.

Optionally, the first clamping surface includes a first clamping unit and a second clamping unit that are connected in a stepped manner, and the first clamping unit is recessed toward the second clamping surface.

Through adopting above-mentioned technical scheme, be the first clamping unit and the second clamping unit that echelonment set up can further improve the suitability of clamping jaw to the container of more size ranges of centre gripping, and when the container is held at first clamping unit position by the addition, the top and the ladder face butt of container, thereby can play spacing and further tight effect of clamp.

Optionally, the multifunctional clamping jaw further comprises an installation table, a plurality of guide grooves extending from the middle part to the periphery in a radiation mode are formed in one end face of the installation table, the connecting ends of the clamping fingers are slidably connected in the guide grooves, and the driving mechanism is installed on the installation table.

Through adopting above-mentioned technical scheme, press from both sides and indicate and actuating mechanism all installs on an mount table, and the guide way can play the guide effect to pressing from both sides the removal that indicates, has improved the stability of drive process and to the stability of container and loading attachment centre gripping.

Optionally, the inner wall of guide slot is provided with spacing portion along length direction, be provided with on the link with spacing portion cooperation joint's cooperation portion.

Through adopting above-mentioned technical scheme, the cooperation of spacing portion and cooperation portion is connected has further improved the stability that presss from both sides the finger removal, and the actuating mechanism of being convenient for is to the control of pressing from both sides the finger, can also reduce the possibility that presss from both sides the finger and break away from with the installation department.

Optionally, the driving mechanism includes driving piece and a plurality of connecting rod, the driving piece includes rotation unit and drive the power unit that rotation unit rotated, connecting rod one end swing joint in rotation unit the connecting rod other end hinge in the link.

Through adopting above-mentioned technical scheme, specifically, the one end of actuating mechanism drive connecting rod is rotary motion, and the other end of connecting rod is articulated with the link that presss from both sides the finger, and the link receives the restriction of guide way simultaneously to realize opening and closing that a plurality of press from both sides the finger, only need drive through a driving piece, simple structure, reaction are quick.

Optionally, the driving mechanism further includes a transmission member, the middle part of the transmission member is fixedly connected with the rotating unit, the end surface of the transmission member, which is far away from the rotating unit, is provided with a plurality of first connecting columns along a circumferential array, and each first connecting column is hinged with one connecting rod.

By adopting the technical scheme, the power unit of the driving piece drives the rotating unit to rotate, and the transmission piece fixed with the rotating unit rotates along with the rotation, so that all connecting rods hinged with the circumferential array of the rotating piece are driven to rotate, and a plurality of clamping fingers are opened or closed.

Optionally, a movable cavity for the connecting rod to move is formed in the mounting table, the guide groove is formed in the bottom wall of the movable cavity, and the connecting rod is arranged in an arc shape and an arc-shaped concave part forms a yielding groove for avoiding the adjacent first connecting column.

Through adopting above-mentioned technical scheme, the movable chamber can play the guard action to connecting rod and connecting rod connected part, has the arc of letting the groove and can reduce actuating mechanism's volume, reduces the volume of mount table promptly, makes the structure of whole multi-functional clamping jaw compacter, simple and answering, and is also more stable to the control of pressing from both sides the finger.

In a second aspect, the present application provides a test tube holder, which adopts the following technical scheme:

a test tube bracket comprises a fixed plate for installing a test tube and a plurality of support legs connected with the fixed plate; the clamping device is characterized in that the fixing plate is provided with a grabbing groove through which the clamping head penetrates, and the grabbing groove is arranged in such a way that the clamping head can be loosened or abutted against the fixing plate in the process that the driving mechanism drives the clamping fingers to be close to or far away from each other.

By adopting the technical scheme, the clamping groove which is matched and connected with the clamping head is formed in the fixed plate of the test tube support, when the multifunctional clamping jaw is required to be used for clamping the test tube support, the driving mechanism drives the clamping finger to be close, so that after the clamping head passes through the clamping groove, the driving mechanism drives the clamping finger to be opened again to tightly prop against the fixed plate, and the clamping jaw is not required to be replaced after the test tube is moved, so that the test tube support can be continuously moved, and the operation is convenient; and the matched part of the test tube bracket and the clamping jaw has simple structure and simple production.

In summary, the present application includes at least one of the following beneficial effects:

1. when a container is required to be clamped, the clamping jaw is moved to a position where the container is located in the clamping space, the driving mechanism drives the clamping fingers to be close to each other so as to clamp the container, when a bearing device of the container is required to be clamped, the clamping grooves for the clamping head to pass through are correspondingly formed in the bearing device, the driving mechanism drives the clamping fingers to be far away from each other so as to open the clamping head to clamp and move the bearing device, and the bearing device of the container and the container can be moved only by using one clamping jaw or even one mechanical arm connected with the clamping jaw, so that the operation is convenient, and the experimental efficiency is improved;

2. the connecting rod is driven by the driving piece to move so as to control the opening and closing of the clamping fingers, so that the structure is simple, and the cost is reduced;

3. the test tube support can be matched with the clamping heads of the clamping jaws only by providing the grabbing grooves corresponding to the clamping fingers, so that the test tube support is grabbed and has a simple structure.

Drawings

FIG. 1 is a schematic view of a multifunctional clamping jaw according to a first embodiment of the present application;

fig. 2 is a schematic structural view of the multifunctional clamping jaw in the first working state according to the first embodiment of the present application;

FIG. 3 is a schematic view of the structure of the multifunctional clamping jaw in the second working state according to the first embodiment of the present application;

FIG. 4 is a schematic view of a structure of a finger in a first embodiment of the present application;

FIG. 5 is a cross-sectional view taken along the direction A-A in FIG. 1;

FIG. 6 is an exploded view of the multifunctional jaw with the protective housing removed in accordance with one embodiment of the present application;

FIG. 7 is a top view of the multi-function jaw removal drive, cover and protective housing of an embodiment of the present application;

FIG. 8 is a schematic view of a mounting table according to a first embodiment of the present disclosure;

fig. 9 is a schematic structural view of a pilot tube holder according to a second embodiment of the present application.

Reference numerals: 1. a clamping finger; 11. a connection end; 111. a mating portion; 112. a second connection post; 113. a groove; 12. a clamping end; 121. a first clamping surface; 1211. a first clamping unit; 1212. a second clamping unit; 122. a second clamping surface; 1221. a clamping groove; 13. a chuck; 14. an anti-slip layer; 2. a driving mechanism; 21. a driving member; 211. a power unit; 212. a rotation unit; 22. a connecting rod; 221. a relief groove; 23. a transmission member; 231. a main body; 2311. a first connection post; 232. a chassis; 2321. a protruding portion; 3. a mounting table; 31. a movable cavity; 32. an edge; 321. a first connection hole; 33. a guide groove; 34. a limit part; 35. sinking grooves; 4. a cover; 41. an annular column; 5. a protective shell; 6. a seal ring; 7. a container; 8. a carrying device; 81. and grabbing grooves.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-9.

Embodiment one:

referring to fig. 1, the embodiment of the application discloses a multifunctional clamping jaw, including a plurality of clamping fingers 1 and a driving mechanism 2 that drives a plurality of clamping fingers 1 to be close to or keep away from each other, clamping fingers 1 includes link 11 and clamping end 12 that link, link 11 connects on driving mechanism 2, clamping end 12 has the first clamping face 121 and the second clamping face 122 that deviate from the setting mutually, a plurality of first clamping faces 121 enclose and establish the clamping space that forms clamping container 7, and the protrusion is provided with chuck 13 on the second clamping face 122. Referring to fig. 2 and 3, the driving mechanism 2 drives the clamping finger 1 to clamp the container 7 when being closed, and drives the clamping head 13 to clamp the bearing device 8 of the container 7 when the clamping finger 1 is opened, so that the container 7 and the bearing device 8 can be moved by only one clamping jaw, and the structure is simple and the operation is convenient.

The container 7 to be clamped can be a test tube, a beaker, a conical flask and other vessels; the carrying device 8 of the container 7 can be a test tube bracket, a conical bottle carrying frame and other brackets, and the carrying device 8 is correspondingly provided with a grabbing groove 81 for the chuck 13 to pass through.

In other embodiments, the multifunctional jaw may include only the gripping finger 1 and the driving mechanism 2, with the operator holding the driving mechanism 2 to control the gripping finger 1 to grip the target.

In the present embodiment, the multifunctional jaw is preferably attached to a robot arm capable of moving in multiple degrees of freedom, and thus can be used in a relatively extreme environment such as a high temperature, a low temperature, or a strong acid. Specifically, the multifunctional clamping jaw further comprises an installation table 3, a plurality of clamping fingers 1 and a driving mechanism 2 are all installed on the installation table 3, a plurality of first connecting holes 321 are formed in the end face of the installation table 3 at intervals along the circumferential direction, a platform connected with the installation table 3 is arranged on the mechanical arm, a second connecting hole is formed in the platform corresponding to the first connecting hole 321, the installation table 3 and the platform are fixed through screw bolt penetrating through the first connecting hole 321 and the second connecting hole and then screw nut screwing fit, and accordingly the multifunctional clamping jaw is fixed on the mechanical arm, and a spring bolt can be used for connecting the multifunctional clamping jaw and the mechanical arm in a plugging mode. The specific structure of the mechanical arm can adopt the prior art, so that the description is omitted.

Referring to fig. 4, the connecting end 11 and the clamping end 12 of the clamping finger 1 may be connected at a sharp right angle, an acute angle or an obtuse angle, and in this embodiment, the right angle connection is adopted to make the structure more compact and the structural strength greater, and the connecting end 11 is slidably connected to the mounting table 3.

The first clamping surface 121 is used for clamping the container 7, the first clamping surface 121 can be arranged as a vertical plane, the bottom end of the first clamping surface 121 is provided with an anti-slip layer 14, so that the clamping jaw can clamp the container 7 more stably, the anti-slip layer 14 can be a plurality of protruding points or protruding strips protruding from the first clamping surface 121, preferably, the anti-slip layer 14 is an anti-slip pad made of materials with anti-slip performance such as rubber, PVC, polyurethane and the like, and the anti-slip pad is adhered on the first clamping surface 121 through glue. In order to further improve the applicability of the clamping jaw to clamp the container 7 with a larger size range, the first clamping surface 121 comprises a first clamping unit 1211 and a second clamping unit 1212 which are connected in a stepped manner, the first clamping unit 1211 is recessed towards the second clamping surface 122, the surfaces of the first clamping unit 1211 and the second clamping unit 1212 can be provided with an anti-slip layer 14, and in addition, when the container 7 with a smaller diameter such as a test tube is clamped at the position of the first clamping unit 1211, the top end of the container 7 is abutted against the stepped surface, so that the effects of limiting and further clamping can be achieved.

The second clamping surface 122 is used for clamping the carrying device 8 of the container 7, and the second clamping surface 122 abuts against the groove wall of the through groove and the top surface of the clamping head 13 abuts against the bottom surface of the carrying device 8, so that the carrying device 8 can be lifted and moved. Further, in order to make the moving process more stable, the second clamping surface 122 is further provided with a clamping groove 1221, the clamping groove 1221 penetrates through two side surfaces of the clamping finger 1 adjacent to the second clamping surface 122, the inner wall of the clamping groove 1221 away from the connecting end 11 forms a side wall of the clamping head 13, the width of the clamping groove 1221 is consistent with the thickness of the clamped part of the bearing device 8 or slightly greater than the thickness of the bearing device 8, and when the clamping finger 1 clamps the bearing device 8, the possibility that the bearing device 8 slides can be limited by the groove wall of the clamping groove 1221.

In other embodiments, the driving mechanism 2 may be configured as a plurality of small linear driving cylinders such as an air cylinder and an electric cylinder, and each clamping finger 1 is connected to a linear driving cylinder, and a driving shaft of the linear driving cylinder is connected to the clamping finger 1 along a horizontal direction.

In this embodiment, the driving mechanism 2 includes a driving member 21, a transmission member 23, and a plurality of links 22:

in some embodiments, the driving member 21 may still be configured as an air cylinder, the driving shaft of the air cylinder moves linearly along the vertical direction, the driving member 23 is fixedly sleeved on the driving shaft, the plurality of connecting rods 22 are hinged on the driving member 23 along the circumferential array of the adaptor, and one end of each connecting rod 22 far away from the driving member 23 is hinged with the top surface of the connecting end 11 of the finger 1; when the driving shaft of the air cylinder is contracted upwards, the connecting rod 22 drives the clamping finger 1 to be closed so as to clamp the container 7, and when the driving shaft of the air cylinder is extended downwards, the connecting rod 22 drives the clamping finger 1 to be opened so as to clamp the bearing device 8.

In this embodiment, referring to fig. 5 and 6, the driving element 21 may be a driving source capable of driving a rotational motion, such as a steering engine or a motor, and is preferably a steering engine with high control accuracy. Specifically, the driving piece 21 includes a rotation unit 212 and a power unit 211 for driving the rotation unit 212 to rotate, the power unit 211 is a control mechanism in the steering engine, and the rotation unit 212 is an output shaft of the steering engine; the transmission piece 23 is arranged in a cylindrical shape, a spline groove is formed in the middle of the top surface of the transmission piece 23, the rotation unit 212 is inserted into the spline groove and fixedly connected with the transmission piece 23 in an interference fit manner in a spline manner, and a plurality of first connecting columns 2311 are arranged on the bottom surface of the transmission piece 23 along the circumferential array; through holes are formed in two ends of the connecting rod 22, a second connecting column 112 is arranged on the top surface of the connecting end 11 of the clamping finger 1 in a protruding mode, two through holes of the connecting rod 22 are sleeved on the first connecting column 2311 and the second connecting column 112 respectively, accordingly the connecting rod 22 is connected with the transmission piece 23 and the clamping finger 1 in a rotating mode, the connecting rod 22 can be a straight rod, preferably, the connecting rod 22 is an arc-shaped rod, and an arc-shaped concave portion is formed into a yielding groove 221 for avoiding the adjacent first connecting column 2311, and therefore the structure is more compact. A plurality of guide slots 33 extending from the middle part to the periphery in a radiation manner are formed in one end face of the mounting table 3, the guide slots 33 are straight slots, the connecting end 11 is slidably connected in the guide slots 33, further, a limiting part 34 is arranged on the inner wall of the guide slots 33 along the length direction, a matching part 111 which is matched and clamped with the limiting part 34 is arranged on the connecting end 11, the limiting part 34 is a convex strip, the matching part 111 is a long slot with the cross section consistent with the cross section of the convex strip, and the moving stability of the finger clamping 1 is further improved due to the matching connection of the limiting part 34 and the matching part 111.

Referring to fig. 7, when the steering engine is configured to drive the output shaft to rotate clockwise, the transmission member 23 drives the connecting rod 22 to rotate and shrink, and the connecting end 11 of the clamping finger 1 is limited by the guide groove 33 while being connected with the connecting rod 22, so that the plurality of clamping fingers 1 are closed; when the steering engine drives the output shaft to rotate anticlockwise, the connecting rod 22 rotates and expands to drive the clamping finger 1 to open; the closing and tensioning of the clamping finger 1 can be controlled by only one rudder, and the structure is simple and the reaction is quick.

In addition, a groove 113 is formed in one side, close to the transmission piece 23, of the top surface of the connecting end 11, the side wall of the groove 113 is arranged into an arc shape consistent with the outer diameter of the transmission piece 23, and when the clamping finger 1 is closed to the limit position, the arc-shaped side wall of the groove 113 can be abutted to the outer wall of the transmission piece 23, so that the limiting effect is achieved.

Further, in order to improve structural stability, the transmission member 23 may include a main body 231 and a chassis 232 detachably connected with the main body 231, the first connection post 2311 is disposed on a bottom surface of the main body 231, a slot is formed in a middle portion of the bottom surface of the main body 231, a protruding portion 2321 is disposed on a top surface of the chassis 232 and is matched with the protruding portion 2321 in the slot, and after the connecting rod 22 is sleeved on the first connection post 2311, the chassis 232 and the main body 231 are fixedly connected together through a countersunk bolt from a middle portion, so as to limit the connecting rod 22 from being separated from the transmission member 23.

In other embodiments, the mount 3 may be provided in a plate shape. Referring to fig. 5 and 8, in this embodiment, in order to protect the driving mechanism 2 and make the overall structure of the multifunctional clamping jaw more stable, the mounting table 3 is configured as a cylinder, the mounting table 3 is internally provided with a movable cavity 31, the movable cavity 31 has an opening penetrating one end surface of the mounting table 3, the mounting table 3 extends out from the edge of the opening to form a rim 32, and the first connecting holes 321 are arranged on the rim 32 in an array. The guide groove 33 is arranged on the bottom wall of the movable cavity 31, and the guide groove 33 penetrates through the side wall of the movable cavity 31 to form a channel for the connecting end 11 to pass through; when the clamping finger 1 is opened to the limit position, the connecting rod 22 will abut against the inner wall of the movable cavity 31, so as to limit the clamping finger 1 from being separated from the mounting table 3.

In order to reduce the possibility that the steering engine is influenced by the extreme experimental environment, the opening of the movable cavity 31 is covered with a sealing cover 4 capable of sealing the opening by the mounting table 3, and the inner wall of the edge 32, which faces the movable cavity 31, is provided with a sinking groove 35 for the sealing cover 4 to be matched and lapped; the driving piece 21 is fixedly connected on the sealing cover 4 through a bolt, a slotted hole for the output shaft of the driving piece 21 to penetrate into the movable cavity 31 is formed in the sealing cover 4, the sealing cover 4 extends into the movable cavity 31 at the slotted hole, the diameter of the top end of the main body 231 of the driving piece 23 is smaller to be matched into the annular cylinder 41, an annular groove is formed in the peripheral side of the top end of the driving piece 23, a rubber sealing ring 6 is embedded in the annular groove, and the sealing ring 6 is in interference fit with the inner wall of the annular cylinder 41. The cover 4 is also fixedly connected with a protective shell 5 covering the driving piece 21 through bolts.

The implementation principle of the multifunctional clamping jaw in the embodiment of the application is as follows:

during installation, the matching part 111 of the clamping finger 1 is corresponding to the limiting part 34 in the chute, so that the clamping finger 1 slides into the guide groove 33 through the channel of the installation table 3 to be connected with the installation table 3; fixing the driving piece 21 on the sealing cover 4, sleeving the sealing ring 6 in an annular groove of the transmission piece 23, fixedly connecting the transmission piece 23 on a driving shaft of the driving piece 21 through an annular column 41 of the sealing cover 4, and sleeving one end of the connecting rod 22 on the first connecting column 2311; then place connecting rod 22 and driving medium 23 in movable chamber 31, make the other end of connecting rod 22 cup joint on pressing from both sides the second spliced pole 112 of finger 1, pass through bolt fixed connection with closing cap 4 and mount table 3, cover protective housing 5 on the steering wheel at last, protective housing 5 passes through the bolt fastening on closing cap 4, simple structure and stability. The mounting table 3 is mounted on a robot arm.

When the container 7 needs to be clamped, the clamping jaw is moved to the position that the container 7 is positioned in the clamping space, the output shaft of the driving piece 21 rotates clockwise, the connecting rod 22 is driven to rotate and shrink by the rotation of the transmission piece 23, the connecting ends 11 of the clamping fingers 1 are limited by the guide grooves 33 while being connected with the connecting rod 22, so that the clamping fingers 1 are closed, and the first clamping surfaces 121 of all the clamping fingers 1 are abutted against the container 7 to clamp the container 7; when the carrying device 8 of the container 7 needs to be clamped, the clamping head 13 passes through the grabbing groove 81 of the carrying device 8, the output shaft of the driving piece 21 rotates anticlockwise, the connecting rod 22 rotates and expands to drive the clamping finger 1 to open, the second clamping surface 122 of the clamping finger 1 abuts against the groove wall of the grabbing groove 81, and the top surface of the clamping head 13 abuts against the bottom surface of the carrying device 8, so that the carrying device 8 is clamped. The container 7 and the carrying device 8 of the container 7 can be moved only by using one clamping jaw or even one mechanical arm connected with the clamping jaw, and the carrying device is simple in structure and convenient to operate.

Embodiment two:

referring to fig. 9, the embodiment of the application discloses a test tube holder, including a fixed plate for installing a test tube and a plurality of supporting legs connected with the fixed plate, the fixed plate and the supporting legs can be made of materials such as corrosion-resistant and high-temperature-resistant metals or plastics. The fixing plate is provided with the catching grooves 81 through which the clamping heads 13 pass, the number of the catching grooves 81 is consistent with that of the clamping fingers 1, and the catching grooves 81 are arranged in such a way that the clamping heads 13 can be loosened or abutted against the fixing plate in the process that the driving mechanism 2 drives the clamping fingers 1 to be close to or far from each other. The matched part of the test tube bracket and the clamping jaw has simple structure and is also simple in production and manufacture.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. A multifunctional clamping jaw which is characterized in that: including a plurality of clamp indicate (1) and drive a plurality of press from both sides indicate (1) each other be close to or the actuating mechanism (2) that keeps away from, press from both sides indicate (1) including link to each other link (11) and clamping end (12), link (11) connect in on actuating mechanism (2), clamping end (12) have first clamping face (121) and second clamping face (122) that deviate from the setting mutually, a plurality of first clamping face (121) enclose establish the centre gripping space that forms centre gripping container (7), the protrusion is provided with chuck (13) on second clamping face (122).

2. A multi-function jaw as claimed in claim 1, wherein: the clamping groove (1221) is formed in the second clamping surface (122), the clamping groove (1221) penetrates through two side surfaces, adjacent to the second clamping surface (122), of the clamping finger (1), and the clamping groove (1221) is far away from the inner wall of the connecting end (11) to form the side wall of the clamping head (13).

3. A multi-function jaw as claimed in claim 1, wherein: an anti-slip layer (14) is arranged on the first clamping surface (121).

4. A multi-function jaw as claimed in claim 1, wherein: the first clamping surface (121) comprises a first clamping unit (1211) and a second clamping unit (1212) which are connected in a stepped manner, and the first clamping unit (1211) is recessed toward the second clamping surface (122).

5. A multi-function jaw as claimed in claim 1, wherein: the novel multifunctional clamp comprises a mounting table (3), and is characterized in that a plurality of guide grooves (33) extending from the middle to the periphery in a radiation mode are formed in one end face of the mounting table (3), the connecting ends (11) of the clamp fingers (1) are connected in the guide grooves (33) in a sliding mode, and the driving mechanism (2) is mounted on the mounting table (3).

6. A multi-function jaw as claimed in claim 5, wherein: the inner wall of the guide groove (33) is provided with a limiting part (34) along the length direction, and the connecting end (11) is provided with a matching part (111) which is matched and clamped with the limiting part (34).

7. A multi-function jaw as claimed in claim 5, wherein: the driving mechanism (2) comprises a driving piece (21) and a plurality of connecting rods (22), the driving piece (21) comprises a rotating unit (212) and a power unit (211) for driving the rotating unit (212) to rotate, one end of each connecting rod (22) is movably connected with the rotating unit (212), and the other end of each connecting rod (22) is hinged to the connecting end (11).

8. A multi-function jaw as claimed in claim 7, wherein: the driving mechanism (2) further comprises a transmission piece (23), the middle part of the transmission piece (23) is fixedly connected with the rotating unit (212), a plurality of first connecting columns (2311) are arranged on the end face, far away from the rotating unit (212), of the transmission piece (23) along a circumferential array, and each first connecting column (2311) is hinged with one connecting rod (22).

9. A multi-function jaw as claimed in claim 8, wherein: the movable cavity (31) used for enabling the connecting rod (22) to move is formed in the mounting table (3), the guide groove (33) is formed in the bottom wall of the movable cavity (31), and the connecting rod (22) is arranged in an arc shape and an arc-shaped concave part forms a yielding groove (221) used for avoiding the adjacent first connecting column (2311).

10. The utility model provides a test tube holder, includes the fixed plate that is used for installing the test tube and a plurality of stabilizer blades of being connected with the fixed plate, its characterized in that: the fixing plate is provided with a grabbing groove (81) for the clamping head (13) of any one of claims 1-9 to pass through, and the grabbing groove (81) is arranged in such a way that the clamping head (13) can be loosened or abutted against the fixing plate in the process that the driving mechanism (2) drives the clamping fingers (1) to be close to or far away from each other.