CN216303172U

CN216303172U - Height lifting platform

Info

Publication number: CN216303172U
Application number: CN202122599698.1U
Authority: CN
Inventors: 鄢德文
Original assignee: Beijing Jike Instrument Co ltd
Current assignee: Beijing Jike Instrument Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-04-15
Anticipated expiration: 2031-10-26

Abstract

The utility model relates to a height lifting table, which belongs to the technical field of displacement tables and comprises a base and a table top used for placing test articles, wherein the base is provided with a horizontal moving mechanism used for carrying out horizontal movement and a lifting mechanism used for pushing the table top to lift, a sliding mechanism is arranged between the horizontal moving mechanism and the lifting mechanism, the table top is arranged at the top of the lifting mechanism, and the horizontal moving mechanism is connected with the lifting mechanism in a sliding manner. The utility model has reasonable structure and convenient installation, and effectively improves the transmission precision and the device stability.

Description

Height lifting platform

Technical Field

The utility model belongs to the technical field of displacement tables, and particularly relates to a height lifting table.

Background

When the mechanisms such as colleges and universities, research institutes, factories and the like are used for testing and researching and developing work of optics, dynamics and the like, the height lifting platform is needed to realize the displacement of the test object in the vertical direction.

The existing height lifting platform is generally in a scissor type or lifting process realized by a lifter, the adjustment precision is low, the bearable load and the occupied space are difficult to obtain, the structure is complex, and the height of the lifting platform is increased.

Disclosure of Invention

Aiming at the technical problems, the utility model provides a height lifting platform which is exquisite and stable in structure, large in load, small in system error and high in transmission precision. In order to realize the purpose of the utility model, the technical proposal adopted by the utility model is as follows:

the utility model provides a high elevating platform, includes the base, is used for placing the mesa of experimental article, the pedestal mounting is used for carrying out horizontal migration's horizontal migration mechanism, is used for promoting the elevating system that the mesa goes up and down, be provided with slide mechanism between horizontal migration mechanism and the elevating system, the top at elevating system is installed to the mesa, horizontal migration mechanism and elevating system sliding connection.

As a preferable scheme, the horizontal moving mechanism comprises a lower wedge block, a first guide rail assembly, a roller screw pair, a driving assembly for driving the lower wedge block to move left and right, and a bearing seat, wherein the first guide rail assembly and the bearing seat are both mounted on the base, the bottom of the lower wedge block is connected with the first guide rail assembly, a screw of the roller screw pair penetrates through the bearing seat, a screw of the roller screw pair is connected with the driving assembly, and a nut of the roller screw pair is fixedly connected with the lower wedge block;

the lifting mechanism comprises an upper wedge block and a lifting assembly, the table top is installed on the top surface of the upper wedge block, and the upper wedge block is connected with the lifting assembly;

slide mechanism is including being used for the second V type guide rail that is connected with last wedge with the first V type guide rail that is connected of wedge down, first V type guide rail, second V type guide rail are parallel arrangement, the V type groove track face of first V type guide rail, second V type guide rail is setting up in opposite directions, lower wedge, last wedge sliding connection.

As a preferable scheme, a rear baffle is mounted on the base, the rear baffle is positioned on one side far away from the driving assembly, the rear baffle is connected with the lifting assembly, and the longitudinal sections of the lower wedge and the upper wedge are both right-angled triangles;

the lower wedge block comprises a block bottom surface, a block right side surface and a first inclined surface, wherein the block bottom surface, the block right side surface and the first inclined surface are horizontally arranged, the block right side surface is positioned on one side close to the driving assembly, the head end of the block bottom surface and the block right side surface are vertically arranged, the block bottom surface is connected with the first guide rail assembly, the block right side surface is connected with the roller screw pair, and the first inclined surface is connected with the first V-shaped guide rail;

go up the wedge including block top surface, block left surface, second inclined plane, block leading flank, the block trailing flank that is the level setting, the end and block left surface, block leading flank, the block trailing flank of block top surface all are perpendicular settings, the top and the mesa fixed connection of block top surface, the block left surface is connected with lifting unit, the second inclined plane is connected with second V type guide rail, second inclined plane and first inclined plane phase-match.

As a preferred scheme, the lifting assembly comprises a roller, a bearing and a limiting block for limiting the installation position of the bearing, the bearing is located right above the limiting block, the limiting block is connected with the rear baffle and the base, the roller is installed between the front side face and the rear side face of the block, one end of the roller is connected with the middle of the front side face of the block, one end of the roller is connected with the middle of the rear side face of the block, the bearing sleeve is arranged in the middle of the roller, and the outer ring of the bearing is in rolling connection with the rear baffle.

As a preferable scheme, the lifting assembly comprises a second slider and a second guide rail, the second guide rail is mounted on the left side surface of the block body, the second slider is connected with the rear baffle, and the second slider is connected with the second guide rail in a sliding manner.

As a preferred scheme, state lifting unit and include roller bearing, the stopper that is used for restricting the bearing mounted position, second slider, second guide rail, the bearing is located the stopper directly over, the stopper all is connected with backplate, base, the roller bearing is installed between block leading flank, block trailing flank, roller bearing one end is connected with the middle part of block leading flank, roller bearing one end is connected with the middle part of block trailing flank, the bearing housing is at the middle part of roller bearing, the second guide rail is installed on the block left surface, the second slider is connected with the backplate, second slider and second guide rail sliding connection, bearing inner race and backplate rolling connection.

As a preferred scheme, the top of the limiting block is provided with a groove, the bearing is inserted into the groove, and the width of the groove is matched with the width of the bearing.

As a preferable scheme, the first inclined plane is provided with a first step, the second inclined plane is provided with a second step, the first step is fixedly connected with the second V-shaped guide rail, the second step is fixedly connected with the second V-shaped guide rail, and an included angle between the first inclined plane and the top surface of the first block is 20-60 °.

The utility model has the following beneficial effects:

according to the utility model, through the horizontal moving mechanism, the lifting mechanism and the sliding mechanism, the upper wedge block is subjected to linear lifting motion in the vertical direction when the lower wedge block linearly moves in the horizontal direction, so that the table top is lifted. The utility model has exquisite and stable structure, reduces system error and effectively improves transmission precision and device stability.

Drawings

FIG. 1 is a schematic view of a height lift table;

FIG. 2 is a cross-sectional view of a height lift table;

FIG. 3 is a front view of a height lift platform;

FIG. 4 is a schematic view of the connection of the lower wedge and the sliding mechanism;

FIG. 5 is a schematic view of the sliding mechanism

FIG. 6 is a schematic view of the connection of the upper wedge and the lifting assembly;

FIG. 7 is a schematic view of the connection of the upper wedge and the lifting assembly;

FIG. 8 is a schematic view of the connection of the upper wedge and the lifting assembly;

fig. 9 is a schematic connection diagram of the lifting assembly, the rear baffle and the bottom surface of the block body.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The terms "top," "bottom," "middle," "upper," "inner," "outer," "left," "right," and the like are used in an orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings for convenience in describing the utility model and simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

Example one

Referring to fig. 1 to 5, a height lifting table comprises a base 1 and a table top 2 for placing test articles, and is characterized in that the base 1 is provided with a horizontal movement mechanism 3 for performing horizontal movement and a lifting mechanism 4 for pushing the table top 2 to lift, a sliding mechanism 5 is arranged between the horizontal movement mechanism 3 and the lifting mechanism 4, the table top 2 is arranged at the top of the lifting mechanism 4, and the horizontal movement mechanism 3 is in sliding connection with the lifting mechanism 4. The horizontal movement of the horizontal mechanism 3 pushes the lifting mechanism 4 to move up and down, and the displacement requirement of test research and development work on the test object in the vertical direction can be met.

Horizontal migration mechanism 3 includes lower voussoir 31, first guide rail set 32, the vice 33 of roller screw, drive lower voussoir 31 side-to-side movement's of drive subassembly 34, bearing frame 35, the vice 33 of roller screw includes lead screw, nut, drive subassembly 34 includes motor 341, link 342, shaft coupling 343, motor 341 and link 342 are connected, link 342 and base 1 fixed connection, the output of motor 1 passes through shaft coupling 343 and the vice 33 lead screw fixed connection of roller screw, first guide rail set 32, bearing frame 35 are all installed on base 1, the bottom and the first guide rail set 32 of lower voussoir 31 are connected, the lead screw of the vice 33 of roller screw passes bearing frame 35, the lead screw of the vice 33 of roller screw is connected with drive subassembly 34, the nut and the lower voussoir 31 fixed connection of roller screw pair 33. In this embodiment, the first rail assembly 32 may be a rail, a slider, or a V-shaped rail with two notches oppositely disposed, as long as the lower wedge 31 can relatively slide. Specifically, the motor 341 drives the roller screw pair 33 to rotate through the coupler 343, the roller screw pair 33 can convert the rotational motion into linear motion, and the lower wedge 31 is connected with the first guide rail assembly 32, so that the lower wedge 31 can slide left and right, and therefore the motor 341 can drive the lower wedge 31 to perform left and right linear motion through the roller screw pair 33. The drive assembly 34 may also include a hand wheel connected to the shaft of the motor 1 at an end remote from the coupling 3 for manual adjustment and control of the lift.

The lifting mechanism 4 comprises an upper wedge block 41 and a lifting assembly 42, the table top 2 is mounted on the top surface of the upper wedge block 41, and the upper wedge block 41 is connected with the lifting assembly 42; slide mechanism 5 is including being used for the first V type guide rail 51 of being connected with lower wedge 31, the second V type guide rail 52 that is used for being connected with last wedge 41, first V type guide rail 51, second V type guide rail 52 are parallel arrangement, first V type guide rail 51, second V type guide rail 52 all are equipped with V type groove, the V type groove track face of first V type guide rail 51, the V type groove track face of second V type guide rail 52 are setting up in opposite directions, lower wedge 31, last wedge 41 sliding connection. The first and second V-

shaped guide rails

51 and 52 can make the lower and

upper wedges

31 and 41 slide more smoothly and excellently.

In this embodiment, the lower wedge 31 is engaged with the first guide rail assembly 32, the motor 341 and the ball screw assembly 33, so that the lower wedge 31 moves left and right in the horizontal direction, the lower wedge 31 is slidably connected to the lower wedge 41, the upper wedge 42 can be pushed to move up when the lower wedge 31 moves left, the upper wedge 42 can be pushed to move down when the lower wedge 31 moves right, and the table top 2 is installed above the upper wedge 42, so that the upper wedge 42 can be constrained by the lower wedge 31, the upper wedge 42, the first guide rail assembly 32, the lifting assembly 42 and the sliding mechanism 5 to move in two directions X, Y without displacement, but only in the Z direction. The simple and exquisite integrated design of the transmission mechanism reduces the system error and improves the transmission precision.

Backplate 11 is installed to base 1, and backplate 11 is located one side of drive assembly 34, in this embodiment, backplate 11 is installed in the left side of base 1, drive assembly 34 installs the right side at the base, backplate 11 is connected with lifting unit 42.

As shown in fig. 6, the lifting assembly 42 includes a roller 421, a bearing 422, and a stopper 423 for limiting the installation position of the bearing 422, the bearing 422 is located directly above the stopper 423, the stopper 423 is connected to the rear baffle 11 and the base 1, the roller 421 is installed between the front side of the block and the rear side of the block, one end of the roller 421 is connected to the middle of the front side of the block, one end of the roller 421 is connected to the middle of the rear side of the block, the bearing 422 is sleeved at the middle of the roller 421, and the outer ring of the bearing 422 is connected to the rear baffle 11 in a rolling manner. In this embodiment, the ball screw pair 33 is located in the middle of the base 4, the first guide rail assembly 32 and the sliding mechanism 5 are both provided with two sets of guide rails and are arranged on two sides in a centered and separated manner, the whole structure is compact, the symmetry is good, the stress is balanced, the comprehensive performances of the device such as load limitation, running stability and impact resistance can be improved, and the service life of the device can be effectively prolonged.

As a preferable scheme, an included angle between the first inclined surface and the top surface of the first block is in a range of 20 ° to 60 °, preferably 25 °, 30 °, 35 °, 40 °, and 45 °, and the angle can better control the movement precision. First inclined plane is provided with first step, the second inclined plane is equipped with the second step, first step and second V type guide rail (52) fixed connection, lower voussoir 31 like this, go up voussoir 41 clearance littleer, the product structure is compacter, and lower voussoir 31 removes and can promote wedge 41 and slide, and the product is rational in infrastructure.

Preferably, the base 1 is provided with a light control assembly, the light control assembly includes a first shutter 12, a first diaphragm 13 corresponding to the first shutter 12, a second shutter 14, and a second diaphragm 15 corresponding to the second shutter 14, the first shutter 12 and the second shutter 13 are both fixedly connected to the base 1, and the first diaphragm 19 is mounted at the bottom of the head end of the lower wedge 31. The single second shutter 13 and the single second diaphragm 15 are a group, and in this embodiment, two groups of second shutters 13 and second diaphragms 15 are disposed at the head end and the tail end of the first guide rail assembly 32, that is, at the extreme positions of the two sides of the movement of the first guide rail assembly 32. Specifically, the first diaphragm 13 automatically stops when moving to the first shutter 12, so that the zero resetting check of the height lifting platform is realized. Two sets of second diaphragms 14, second optical gate 15 constitute negative spacing and positive spacing respectively, avoid high elevating platform lift excessively to cause inside motion spare part to damage, have also guaranteed the transmission precision simultaneously. The utility model is also provided with a central controller, the core of the central controller can be a singlechip or a PLC, the motor 1, the first optical gate 12, the first diaphragm 13, the second optical gate 14, the second diaphragm 15 and the like are electrically connected with the central controller, the optical gates transmit photoelectric signals to the controller, the controller adjusts the action of the motor 1 according to the setting after receiving the photoelectric signals, and can also display the lifting displacement according to the potential of the optical gates.

Example two

In the embodiment, the lifting assembly 42 is modified based on the first embodiment, and as shown in fig. 7, the lifting assembly 42 includes a second slider 424 and a second guide rail 425, the second guide rail 425 is installed on the left side surface of the block, the second slider 424 is connected with the tailgate 11, and the second slider 424 is slidably connected with the second guide rail 425. The slider 424 and the second guide rail 425 can ensure that the lower wedge block 41 runs up and down more stably and has higher precision.

EXAMPLE III

This implementation is right on the basis of embodiment one, two lifting unit 42 improves, as shown in fig. 8-9 lifting unit 42 includes roller 421, bearing 422, stopper 423, second slider 424, the second guide rail 425 that is used for restricting the bearing 422 mounted position, second guide rail 425 installs on the block left surface, second slider 424 is connected with backplate 11, roller 421 installs between block front side, block rear side, roller 421 one end is connected with the middle part of block front side, roller 421 one end is connected with the middle part of block rear side, bearing 422 overlaps in the middle part of roller 421, stopper 423 is connected with backplate 11, base 1 all, second slider 424 is connected with second guide rail 425 sliding, the bearing 422 outer lane and backplate 11 rolling connection.

The top of the stop block 423 is provided with a groove 4231, and the groove width of the groove 4231 is matched with the width of the bearing 422. The bearing 422 is located right above the stop block 423, when the upper wedge 41 is located at the lowest point, the bearing 422 is inserted into the groove 4231, and the stop block 423 is provided for facilitating installation.

In the first embodiment, a combination of the roller 421 and the bearing 422 is adopted, so that the vertical rolling and the vertical rolling can be realized, but the vertical rolling and the vertical rolling can cause forward and backward shaking, and the structural stability is poor. The second embodiment adopts the structure of the two sliding blocks 424 and the second guide rail 425, so that the shaking can be avoided, and the equipment can run stably and accurately. However, in both cases, the second guide 425 often has a certain inclination during installation, which in turn affects the accuracy of the installation. In this embodiment, during installation, the roller 421 and the bearing 422 are assembled, the roller 421 is installed on the upper wedge 41, the roller 421 is inserted into the groove 4231 of the stopper 423, it is ensured that the left side surface of the block of the upper wedge 41 is perpendicular to the base 1, and thus the second guide rail 425 is also perpendicular to the base 1, and then the second slider 424 on the rear fender 11 is connected with the second guide rail 425, so as to ensure the perpendicularity of the upper wedge 41, so that the equipment operates more stably and has higher precision.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a high elevating platform, includes base (1), mesa (2) that are used for placing experimental article, its characterized in that, base (1) is installed and is used for carrying out horizontal migration's horizontal migration mechanism (3), is used for promoting elevating system (4) that mesa (2) go up and down, be provided with slide mechanism (5) between horizontal migration mechanism (3) and elevating system (4), the top at elevating system (4) is installed in mesa (2), horizontal migration mechanism (3) and elevating system (4) sliding connection.

2. A height elevating platform according to claim 1,

the horizontal moving mechanism (3) comprises a lower wedge block (31), a first guide rail assembly (32), a roller screw pair (33), a driving assembly (34) for driving the lower wedge block (31) to move left and right, and a bearing seat (35), wherein the first guide rail assembly (32) and the bearing seat (35) are both arranged on the base (1), the bottom of the lower wedge block (31) is connected with the first guide rail assembly (32), a screw of the roller screw pair (33) penetrates through the bearing seat (35), a screw of the roller screw pair (33) is connected with the driving assembly (34), and a nut of the roller screw pair (33) is fixedly connected with the lower wedge block (31);

the lifting mechanism (4) comprises an upper wedge block (41) and a lifting assembly (42), the table top (2) is installed on the top surface of the upper wedge block (41), and the upper wedge block (41) is connected with the lifting assembly (42);

slide mechanism (5) are including being used for first V type guide rail (51) be connected with lower wedge (31), be used for with second V type guide rail (52) that last wedge (41) are connected, first V type guide rail (51), second V type guide rail (52) are parallel arrangement, the V type groove track face of first V type guide rail (51), the V type groove track face of second V type guide rail (52) are setting up in opposite directions, lower wedge (31), last wedge (41) sliding connection.

3. The height lifting platform as claimed in claim 2, characterized in that a rear baffle (11) is mounted on the base (1), the rear baffle (11) is located at the side far away from the driving assembly (34), the rear baffle (11) is connected with the lifting assembly (42), and the longitudinal sections of the lower wedge (31) and the upper wedge (41) are right triangles;

the lower wedge block (31) comprises a block bottom surface, a block right side surface and a first inclined surface, wherein the block bottom surface, the block right side surface and the first inclined surface are horizontally arranged, the block right side surface is positioned on one side close to the driving assembly (34), the head end of the block bottom surface and the block right side surface are vertically arranged, the block bottom surface is connected with the first guide rail assembly (32), the block right side surface is connected with the roller screw pair (33), and the first inclined surface is connected with the first V-shaped guide rail (51);

go up voussoir (41) including block top surface, block left surface, second inclined plane, block leading flank, the block trailing flank that is the level setting, the end and block left surface, block leading flank, the block trailing flank of block top surface all are perpendicular settings, the top and mesa (2) fixed connection of block top surface, the block left surface is connected with lifting unit (42), the second inclined plane is connected with second V type guide rail (52), the second inclined plane and first inclined plane phase-match.

4. The height lifting platform according to claim 3, wherein the lifting assembly (42) comprises a roller (421), a bearing (422) and a limit block (423) for limiting the installation position of the bearing (422), the bearing (422) is located right above the limit block (423), the limit block (423) is connected with the rear baffle (11) and the base (1), the roller (421) is installed between the front side surface and the rear side surface of the block, one end of the roller (421) is connected with the middle part of the front side surface of the block, one end of the roller (421) is connected with the middle part of the rear side surface of the block, the bearing (422) is sleeved at the middle part of the roller (421), and the outer ring of the bearing (422) is connected with the rear baffle (11) in a rolling manner.

5. A height elevating platform according to claim 3, wherein the elevating assembly (42) comprises a second slider (424), a second guide rail (425), the second guide rail (425) is mounted on the left side of the block, the second slider (424) is connected with the rear baffle (11), and the second slider (424) is connected with the second guide rail (425) in a sliding manner.

6. The height lifting platform according to claim 3, wherein the lifting assembly (42) comprises a roller (421), a bearing (422), a limiting block (423) for limiting the installation position of the bearing (422), a second slider (424) and a second guide rail (425), the bearing (422) is located right above the limiting block (423), the limiting block (423) is connected with the rear baffle (11) and the base (1), the roller (421) is installed between the front side surface and the rear side surface of the block, one end of the roller (421) is connected with the middle part of the front side surface of the block, one end of the roller (421) is connected with the middle part of the rear side surface of the block, the bearing (422) is sleeved on the middle part of the roller (421), the second guide rail (425) is installed on the left side surface of the block, the second slider (424) is connected with the rear baffle (11), and the second slider (424) is connected with the second guide rail (425) in a sliding manner, and the outer ring of the bearing (422) is in rolling connection with the rear baffle (11).

7. A height lifting platform according to claim 4 or 6, characterized in that the top of the stopper (423) is provided with a groove (4231), the bearing (422) is inserted into the groove (4231), and the groove width of the groove (4231) matches the width of the bearing (422).

8. A height elevating platform as claimed in claim 3, wherein: the first inclined plane is provided with a first step, the second inclined plane is provided with a second step, the first step is fixedly connected with a second V-shaped guide rail (52), the second step is fixedly connected with the second V-shaped guide rail (52), and the included angle between the first inclined plane and the top surface of the first block is 20-60 degrees.