CN116038603B - Clamping system for hydraulic pump test - Google Patents

Abstract

The invention relates to the technical field of hydraulic testing equipment, in particular to a clamping system for testing a hydraulic pump. The hydraulic pump testing device comprises a mounting plate, wherein a through hole for a hydraulic pump to be tested to pass through is formed in the mounting plate, and a clamping device for fixing the hydraulic pump to be tested in the through hole is arranged on the mounting plate; the mounting plate is also provided with a rotating device for rotating the mounting plate; and the mounting plate is also provided with a moving device for translating the mounting plate. By arranging the clamping device, the hydraulic pump can be quickly fixed on the mounting plate without a fastener, so that the hydraulic pump is convenient to assemble and disassemble, and the operation of screwing the fastener one by one is omitted; through setting up rotating device, after accomplishing the test to a hydraulic pump, rotate the mounting panel through rotating device for hydraulic pump slope to oil inlet or oil-out and face ground direction, and then make the fluid in the hydraulic pump can directly follow in oil inlet or the oil-out.

Description

Clamping system for hydraulic pump test

Technical Field

The invention relates to the technical field of clamping devices of hydraulic equipment, in particular to a clamping system for testing a hydraulic pump.

Background

The hydraulic pump test link is the most critical link of the delivery of the hydraulic pump. When the hydraulic pump is tested, one of the main reasons for reducing the test efficiency is that the hydraulic pump is time-consuming and labor-consuming when being clamped on a hydraulic test bench, most hydraulic pump clamping in the hydraulic test bench is that after a worker aligns the spigot of the tested pump with a flange plate on a mounting plate through a plurality of hoisting tools, the pump is slowly rotated until a threaded hole for mounting and fixing the pump is aligned with a threaded hole on the flange plate, and meanwhile, after a pump shaft of the pump is coaxial with a coupling, a motor is fixed on the mounting plate through bolts. On the other hand, after the test is completed on one hydraulic pump, the residual oil in the hydraulic pump needs to be poured out, and the operation of pouring out the residual oil in the hydraulic pump is time-consuming and labor-consuming.

The clamping device for the conventional hydraulic device test comprises a base assembly and two clamping assemblies arranged on the base assembly; the base assembly comprises a base, and a base sliding rail is arranged on the base; the clamping assembly comprises a tray and a bracket combination arranged on the tray, a tray sliding block matched with the base sliding rail is arranged at the bottom of the tray, the upper portion of the tray is provided with a tray sliding rail perpendicular to the base sliding rail, the bracket combination comprises a bracket, the bracket comprises an L-shaped cross surface and a vertical surface, the bottom of the cross surface is provided with a bracket sliding block matched with the tray sliding rail, and a fixing device used for fixing a hydraulic walking device is arranged at the upper portion of the vertical surface. The test clamping device of the hydraulic traveling device is provided with two sets of clamping assemblies capable of sliding.

The existing hydraulic pump clamping device can improve certain testing efficiency, but still has the problems that time and labor are wasted when the hydraulic pump is clamped, and meanwhile residual oil in the hydraulic pump is difficult to dump.

Disclosure of Invention

The invention provides a clamping system for hydraulic pump testing, which aims to solve the problems that the hydraulic pump clamping assembly in the prior art is time-consuming and labor-consuming in clamping a hydraulic pump and meanwhile residual oil in the hydraulic pump is difficult to dump.

In order to solve the technical problems, the invention adopts the following technical scheme: the clamping system for testing the hydraulic pump comprises a mounting plate, wherein a through hole for the hydraulic pump to be tested to pass through is formed in the mounting plate, and a clamping device for fixing the hydraulic pump to be tested in the through hole is arranged on the mounting plate; the mounting plate is also provided with a rotating device for rotating the mounting plate; and the mounting plate is also provided with a moving device for translating the mounting plate.

The mounting plate is used for bearing a hydraulic pump to be tested, and a pump shaft of the hydraulic pump to be tested passes through the through port and is connected with the coupler on the hydraulic test bed; the clamping device is used for fixing the hydraulic pump to be tested on the mounting plate; the rotating device is used for rotating the mounting plate to enable the hydraulic pump to tilt in a turnover way; the moving device is used for moving the mounting plate so that the hydraulic pump fixed on the mounting plate is meshed with the coupler on the hydraulic test bed.

Further, the clamping device comprises a clamping plate, a clamping assembly and a compacting assembly; the clamping plate is in power connection with the clamping assembly and the compacting assembly; the clamping assembly drives the clamping plate to clamp the hydraulic pump to be tested; the pressing assembly drives the clamping plate to press the hydraulic pump to be tested against the mounting plate.

Further, the clamping assembly comprises a plurality of clamping driving cylinders, the clamping driving cylinders are arranged on the mounting plate, and the clamping driving cylinders are arranged around the through holes; the clamping plate is in power connection with the clamping driving cylinder, and the clamping driving cylinder can drive the clamping plate to abut against the hydraulic pump to be tested in the through hole.

Further, the compressing assembly comprises a plurality of compressing driving cylinders, and the compressing driving cylinders are arranged at the output ends of the compressing driving cylinders; the clamping plate is arranged at the output end of the compression driving cylinder, and the compression driving cylinder can prop the hydraulic pump in the through hole on the mounting plate.

Further, the clamping device also comprises a positioning assembly, wherein the positioning assembly comprises a plurality of spigot limiting plates and limiting columns; the limiting column is arranged on the spigot limiting plate; the spigot limiting plates are arranged on the mounting plate, and the spigot limiting plates are arranged on the periphery of the through opening; the spigot limiting plate is provided with an arc opening, and the arc opening is concentric with the spigot of the hydraulic pump to be tested.

Further, the rotating device comprises a rotating seat, a locking assembly, a clamping assembly for supporting the rotating seat and an adjusting assembly for adjusting the radial position of the rotating seat; the rotating seat is rotatably arranged in the clamping assembly; the mounting plate is arranged on the rotating seat; the adjusting component is connected with the clamping component; the locking assembly may prevent the swivel mount from rotating.

Further, the device also comprises a base, wherein the base is connected with a moving device, and the moving device can drive the base to translate; the base is provided with a mounting port; a flange is arranged on the periphery of the rotating seat; the clamping assembly comprises a plurality of mounting blocks and a plurality of rollers; the mounting blocks are arranged on the base and surround the mounting openings; and each mounting block is provided with a plurality of rollers in a rotating manner, and the flange is arranged between two adjacent rollers and is in sliding contact with the rollers.

Further, the locking component comprises a bayonet, a bolt driving cylinder, an elastic piece and a pulley; the bayonet is arranged on the flange; the bolt driving cylinder is arranged on the base, and the output end of the bolt driving cylinder can be inserted into the bayonet; the elastic piece is arranged on the base; the pulley is rotationally arranged on the elastic piece; the elastic piece is used for abutting the pulley on the flange, and one third to one half of the circumference of the pulley can be clamped into the bayonet.

Further, the adjusting assembly comprises a plurality of adjusting rods and a plurality of strip holes; one end of the adjusting rod is connected with the mounting block, and the other end of the adjusting rod is arranged on the base in a penetrating manner through threaded fit; the strip holes are formed in the mounting block, and each strip hole extends towards the center direction of the rotating seat.

Further, the moving device comprises a screw rod, a nut seat, a guide rail and a sliding block; the nut seat is penetrated on the screw rod through threaded fit, and the sliding block is arranged on the guide rail in a sliding way; the base is connected with the nut seat and the sliding block.

Compared with the prior art, the invention has the beneficial effects that:

1. through setting up the clamping device, need not to pass through the fastener and can fix the hydraulic pump on the mounting panel fast, easy dismounting, save the operation of screwing up the fastener by one to save the time of dismouting hydraulic pump greatly, and then reach the effect of lifting test hydraulic pump efficiency;

2. through setting up the rotating device, after finishing the test to a hydraulic pump, rotate the mounting panel through the rotating device, make the hydraulic pump slope to the oil inlet or the oil outlet face the ground direction, and then make the fluid in the hydraulic pump flow out from the oil inlet or the oil outlet directly, reach the effect of pouring the residual fluid in the hydraulic pump fast and conveniently;

3. through setting up locking component, rotate the hydraulic pump to the certain angle after, can be through locking component with the roating seat spacing in current position department to make the hydraulic pump can keep pouring oil at current angle, need not to expend the manpower with the fixed spacing in current angle of roating seat.

Drawings

FIG. 1 is a schematic overall construction of an embodiment of a clamping system for hydraulic pump testing of the present invention with a hydraulic pump clamped thereto;

FIG. 2 is a schematic view of the overall structure of another view of an embodiment of a clamping system for hydraulic pump testing of the present invention with a hydraulic pump clamped thereto;

FIG. 3 is a schematic view of a positioning assembly of an embodiment of a clamping system for hydraulic pump testing according to the present invention;

FIG. 4 is a schematic view of the mounting plate in an embodiment of a clamping system for hydraulic pump testing according to the present invention;

FIG. 5 is a schematic diagram of the clamping drive cylinder and the hold-down drive cylinder in an embodiment of a clamping system for hydraulic pump testing of the present invention;

FIG. 6 is a schematic diagram of another view of an embodiment of a clamping system for hydraulic pump testing according to the present invention;

FIG. 7 is a schematic diagram of the clamping assembly and locking assembly of an embodiment of a clamping system for hydraulic pump testing according to the present invention;

FIG. 8 is an internal block diagram of an elastomeric member in an embodiment of a clamping system for hydraulic pump testing in accordance with the present invention;

fig. 9 is a schematic structural view of embodiment 3 of a clamping system for hydraulic pump testing according to the present invention.

In the accompanying drawings: 1. a mounting plate; 101. a through port; 102. slotting; 103. a handle; 2. a clamping device; 21. a clamping plate; 22. a clamping driving cylinder; 23. compressing the driving cylinder; 24. a positioning assembly; 241. a spigot limiting plate; 242. a limit column; 31. a rotating seat; 32. a clamping assembly; 321. a mounting block; 3211. a square plate; 3212. square columns; 3213. a fixed block; 322. a roller; 33. a flange; 34. a locking assembly; 341. a bayonet; 342. a latch driving cylinder; 343. a pulley; 344. an elastic member; 3441. a cylinder; 3442. abutting the piston; 3443. a spring; 3444. an adjusting piston; 35. an adjustment assembly; 351. an adjusting rod; 352. a strip hole; 4. a base; 41. a mounting port; 5. a mobile device; 51. a screw rod; 52. a nut seat; 53. a guide rail; 54. a slide block; 55. a hand wheel; 6. a hydraulic pump.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.

The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there are orientations or positional relationships indicated by terms "upper", "lower", "left", "right", "long", "short", etc., based on the orientations or positional relationships shown in the drawings, this is merely for convenience in describing the present invention and simplifying the description, and is not an indication or suggestion that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and are not to be construed as limitations of the present patent, and that it is possible for those of ordinary skill in the art to understand the specific meaning of the terms described above according to specific circumstances.

The technical scheme of the invention is further specifically described below through specific embodiments and with reference to the accompanying drawings.

Example 1

Referring to fig. 1 and 2, an embodiment 1 of a clamping system for testing a hydraulic pump according to the present invention includes a mounting plate 1, wherein a through hole 101 for a hydraulic pump 6 to be tested to pass through is provided on the mounting plate 1, and a clamping device 2 for fixing the hydraulic pump 6 to be tested in the through hole 101 is provided on the mounting plate 1; the mounting plate 1 is also provided with a rotating device for rotating the mounting plate 1; the mounting plate 1 is also provided with a moving device 5 for translating the mounting plate 1.

Specifically, the clamping system is used for being installed on a hydraulic pump test bed, a coupler is arranged behind the clamping system, and a pump shaft of the hydraulic pump 6 is connected with equipment such as a motor, a sensor and the like through the coupler. The mounting plate 1 is circular, the through hole 101 is also circular, and the through hole 101 is coaxially arranged on the mounting plate 1. When the hydraulic pump 6 is tested, the pump shaft of the hydraulic pump 6 is inserted into the alignment port 101, then the hydraulic pump 6 is fixed on the mounting plate 1 by the clamping device 2, and the mounting plate 1 is moved by the moving device 5, so that the pump shaft of the hydraulic pump 6 is gradually meshed with the coupler, and the hydraulic pump 6 can be tested at the moment. After the test is finished, the mounting plate 1 is moved through the moving device 5 again, so that the pump shaft of the hydraulic pump 6 is separated from the coupler, then the mounting plate 1 can be rotated through the rotating device, so that the oil outlet or the oil inlet of the hydraulic pump 6 faces the ground direction, and the oil in the hydraulic pump 6 can flow out through the oil outlet or the oil inlet.

Referring to fig. 2 to 5, in the present embodiment, the clamping device 2 includes a clamping plate 21, a clamping assembly and a pressing assembly; the clamping plate 21 is in power connection with the clamping assembly and the compacting assembly; the clamping assembly drives the clamping plate 21 to clamp the hydraulic pump 6 to be tested; the pressing assembly drives the clamping plate 21 to press the hydraulic pump 6 to be tested against the mounting plate 1.

Specifically, the pump shaft of the hydraulic pump 6 passes through the through opening 101, the flange on the hydraulic pump 6 is abutted against the mounting plate 1, then the clamping assembly is started, the clamping assembly drives the clamping plate 21 to clamp the hydraulic pump 6, then the pressing assembly is started, and the pressing assembly abuts against the flange of the hydraulic pump 6 on the mounting plate 1, so that the effect of fixing the hydraulic pump 6 can be achieved.

In this embodiment, the clamping assembly includes a plurality of clamping driving cylinders 22, the plurality of clamping driving cylinders 22 are disposed on the mounting plate 1, and the clamping driving cylinders 22 are disposed around the through hole 101; the clamping plate 21 is in power connection with the clamping driving cylinder 22, and the clamping driving cylinder 22 can drive the clamping plate 21 to abut against the hydraulic pump 6 to be tested in the through hole 101.

Specifically, the clamping driving cylinder 22 is a double-acting hydraulic cylinder; the clamping driving cylinder 22 is mounted on the side of the mounting plate 1 facing away from the hydraulic pump 6 by bolts; the number of the clamping driving cylinders 22 is two, and the two clamping driving cylinders 22 are arranged on both sides of the through hole 101 with the diameter of the mounting plate 1 as an axis symmetry. The output direction of the output end of the clamping driving cylinder 22 is parallel to the radial direction of the mounting plate 1, so that the clamping driving cylinder 22 can drive the clamping plate 21 to clamp the hydraulic pump 6 from two opposite radial directions on the periphery side of the hydraulic pump 6, and the radial fixation of the hydraulic pump 6 is completed.

In this embodiment, the compressing assembly includes a plurality of compressing driving cylinders 23, where the compressing driving cylinders 23 are disposed on the output end of the clamping driving cylinder 22; the clamping plate 21 is arranged at the output end of the compression driving cylinder 23, and the compression driving cylinder 23 can tightly support the hydraulic pump 6 in the through hole 101 on the mounting plate 1.

Specifically, the pressing driving cylinders 23 are hydraulic cylinders, and two pressing driving cylinders 23 are arranged, and each pressing driving cylinder 23 is mounted on the output end of the corresponding clamping driving cylinder 22 through bolts; the mounting plate 1 is provided with two slots 102 at a position facing the clamping drive cylinder 22, the extension direction of the slots 102 being the same as the movement direction of the output end of the clamping drive cylinder 22. The hold-down drive cylinder 23 passes through the slot 102 and the clamping plate 21 is bolted to the output end of the hold-down drive cylinder 23. When the hydraulic pump 6 is fixed, the pump shaft of the hydraulic pump 6 is inserted into the through hole 101, the flange part of the hydraulic pump 6 is contacted with the part of the mounting plate 1 on the periphery side of the through hole 101, the two clamping driving cylinders 22 drive the clamping driving cylinders 23 to drive the clamping plates 21 to move towards the hydraulic pump 6 until the end parts of the clamping plates 21 are abutted with the hydraulic pump 6, and then the output ends of the clamping driving cylinders 23 drive the clamping plates 21 to move towards the flange of the hydraulic pump 6 until the clamping plates 21 abut the flange of the hydraulic pump 6 on the mounting plate 1, so that the hydraulic pump 6 is fixed. The end of the clamping plate 21 remote from the pressing drive cylinder 23 is copper, so that damage to the surface of the hydraulic pump 6 can be prevented.

Can be with hydraulic pump 6 quick fixation on mounting panel 1 through compressing tightly subassembly and clamping assembly, easy dismounting saves the operation of next screwing up the fastener to save the time of dismouting hydraulic pump 6 greatly, and then reach the effect that promotes experimental hydraulic pump 6 efficiency.

Referring to fig. 2 and 3, in the present embodiment, the clamping device 2 further includes a positioning assembly 24, and the positioning assembly 24 includes a plurality of spigot limiting plates 241 and limiting posts 242; the limiting post 242 is arranged on the spigot limiting plate 241; the spigot limiting plates 241 are arranged on the mounting plate 1, and the spigot limiting plates 241 are arranged on the periphery of the through openings 101; an arc port is arranged on the spigot limiting plate 241 and is concentric with the spigot of the hydraulic pump 6 to be tested.

Specifically, the number of the spigot limiting plates 241 is two, the two spigot limiting plates 241 are respectively arranged on the same straight line with the two clamping driving cylinders 22, and the limiting posts 242 are welded on the spigot limiting plates 241. When the hydraulic pump 6 is inserted into the through hole 101, the spigot of the hydraulic pump 6 is attached to the arc opening of the spigot limiting plate 241, and the limiting column 242 on the spigot limiting plate 241 is inserted into the screw hole of the flange of the hydraulic pump 6, so that the hydraulic pump 6 is positioned before the clamping device 2 is not fixed to the hydraulic pump 6, and the hydraulic pump 6 is prevented from being skewed before the clamping device 2 is fixed to the hydraulic pump 6. Through changing tang limiting plate 241 of different arc mouths, can cooperate with hydraulic pump 6 of different specifications.

Referring to fig. 6 and 7, in the present embodiment, the rotating device includes a rotating base 31 and a clamping assembly 32 for supporting the rotating base 31, where the rotating base 31 is rotatably disposed in the clamping assembly 32; the mounting plate 1 is arranged on the rotating seat 31.

Specifically, the rotary seat 31 has a circular ring shape, and the mounting plate 1 is fixed to the rotary seat 31 by bolts. The clamping assembly 32 supports the rotating seat 31 in a suspended state, so that the rotating seat 31 can rotate around the axis of the rotating seat under the action of external force. After the hydraulic pump 6 is tested, a technician can rotate the mounting plate 1, so that an oil inlet or an oil outlet of the hydraulic pump 6 faces the ground direction, residual oil in the hydraulic pump 6 can flow out through the oil inlet or the oil outlet facing the ground direction, the hydraulic pump 6 does not need to be taken down from the mounting plate 1, and time and labor are saved. A plurality of cylindrical handles 103 are welded to the mounting plate 1, and a technician can rotate the mounting plate 1 by holding the handles 103.

In this embodiment, the device further comprises a base 4, the base 4 is connected with a moving device 5, and the moving device 5 can drive the base 4 to translate; the base 4 is provided with a mounting opening 41; a flange 33 is arranged on the periphery of the rotating seat 31; the clamping assembly 32 includes a plurality of mounting blocks 321 and a plurality of rollers 322; a plurality of the mounting blocks 321 are arranged on the base 4, and the plurality of the mounting blocks 321 are arranged around the mounting opening 41; each of the mounting blocks 321 is rotatably provided with a plurality of rollers 322, the flange 33 is arranged between two adjacent rollers 322, and the flange 33 is in sliding contact with the rollers 322.

Specifically, the flange 33 is coaxially provided on the outer wall of the rotary seat 31, and the flange 33 and the rotary seat 31 are integrally formed. The base 4 is provided with a circular mounting opening 41. The four mounting blocks 321 are arranged at the positions of 45 degrees, 135 degrees, 225 degrees and 315 degrees of the mounting opening 41. The mounting block 321 comprises a square plate 3211 and a square column 3212, the square column 3212 is vertically welded on the square plate 3211, the square plate 3211 is fixed on the side wall of the base 4 facing the mounting plate 1 through bolts, and the square column 3212 extends into the mounting opening 41. Two strip-shaped fixing blocks 3213 are fixed on each square column 3212 through bolts, and an interval is reserved between the two fixing blocks 3213. Two rollers 322 are arranged on each fixed block 3213, and the two rollers 322 on each fixed block 3213 are respectively arranged on two sides of the square column 3212; the two side walls of the flange 33 are respectively contacted with the rollers 322 on the two fixed blocks 3213 on the square columns 3212. The rotating seat 31 is clamped and supported by the rollers 322 on the four mounting blocks 321, and the rotating seat 31 can rotate.

Referring to fig. 1, in the present embodiment, the moving device 5 includes a screw rod 51, a nut seat 52, a guide rail 53, and a slider 54; the nut seat 52 is arranged on the screw rod 51 in a penetrating way through threaded fit, and the sliding block 54 is arranged on the guide rail 53 in a sliding way; the base 4 is connected with the nut seat 52 and the sliding block 54.

Specifically, both ends of the screw rod 51 are penetrated through two fixing seats having bearings to be mounted on the table surface of the hydraulic pump 6 test stand, so that the screw rod 51 can be rotated. One end of the screw rod 51 is provided with a rotating wheel, so that a technician can conveniently rotate the screw rod 51. The nut seat 52 is fixed at the bottom of the base 4 through bolts, when the rotating wheel rotates, the screw rod 51 rotates along with the nut seat 52, and the nut seat 52 translates along the screw rod 51, so that the base 4 is driven to move. The two guide rails 53 are symmetrically arranged on the table surface of the hydraulic pump 6 test table by taking the screw rod 51 as a symmetry axis. Two sliding blocks 54 are arranged on each guide rail 53 at intervals, the sliding blocks 54 are embedded on the guide rails 53 in a sliding mode, and the sliding blocks 54 are fixed to the bottom of the base 4 through bolts. When the base 4 moves, the mounting plate 1 is driven to move, so that the hydraulic pump 6 can be driven to move, and the guide rail 53 and the sliding block 54 are arranged to enable the movement of the base 4 to be more stable. A hand wheel 55 is welded on one end face of the screw rod 51, so that a technician can conveniently rotate the screw rod 51.

Example 2

Referring to fig. 7 and 8, in an embodiment 2 of a clamping system for hydraulic pump testing according to the present invention, the difference between the present embodiment and embodiment 1 is that the rotating device further includes a locking assembly 34, and the locking assembly 34 can prevent the rotating seat 31 from rotating. After the hydraulic pump 6 is rotated to a proper angle, the rotating seat 31 can be limited at the current position through the locking assembly 34, so that the hydraulic pump 6 can dump oil at the current angle, and the rotating seat 31 is fixedly limited at the current angle without consuming manpower.

In this embodiment, the locking assembly 34 includes a bayonet 341, a latch driving cylinder 342, an elastic member 344, and a pulley 343; the bayonet 341 is formed on the flange 33; the pin driving cylinder 342 is arranged on the base 4, and the output end of the pin driving cylinder 342 can be inserted into the bayonet 341; the elastic member 344 is mounted on the base 4; the pulley 343 is rotatably arranged on the elastic member 344; the elastic member 344 abuts the pulley 343 against the flange 33, and a third to a half of the circumference of the pulley 343 is snapped into the bayonet 341.

Specifically, the number of bayonets 341 is six, and six bayonets 341 are distributed on the flange 33. The elastic member 344 includes a cylinder 3441, a pressing piston 3442, a spring 3443, and an adjusting piston 3444. The abutment piston 3442 is slidably inserted into one end of the cylinder 3441, the adjustment piston 3444 is threaded to pass through the other end of the cylinder 3441, the spring 3443 is provided in the cylinder 3441, one end of the spring 3443 abuts against the abutment piston 3442, and the other end abuts against the adjustment piston 3444. The pulley 343 is rotatably disposed at one end of the abutting piston 3442, the cylinder 3441 and the latch driving cylinder 342 are fixedly disposed on the base 4, and the cylinder 3441 and the center line of the base 4 of the latch driving cylinder 342 are symmetrically disposed. The abutment piston 3442 has a moving tendency toward the flange 33 under the elastic force of the spring 3443, so that the pulley 343 abuts against the flange 33.

Before testing the hydraulic pump 6, the output end of the pin driving cylinder 342 extends out and is inserted into the bayonet 341, so that the rotating seat 31 cannot rotate, the effect of locking the rotating seat 31 is achieved, and then the test of the hydraulic pump 6 can be started. After the test is completed, the output end of the bolt driving cylinder 342 is retracted, the rotating seat 31 is rotated, the hydraulic pump 6 is rotated to an angle convenient for oil to topple, the abutting oil cylinder drives the pulley 343 to be clamped into the opening under the action of the spring 3443, and the rotating seat 31 is temporarily locked at the moment; after the oil is poured, a certain external force is applied to the rotary seat 31, so that the rotary seat 31 overcomes the elastic force of the spring 3443, and the pulley 343 drives the abutting piston 3442 to retract, so that the rotary seat 31 can rotate again.

The adjusting piston 3444 is further threaded with a nut, the nut abuts against the outer side of the cylinder 3441, and the nut can lock the adjusting piston 3444 at the current position. The compression degree of the spring 3443 can be adjusted by adjusting the length of the adjusting piston 3444 extending into the cylinder 3441, so that the elastic force of the abutting piston 3442 can be adjusted; when the elastic force of the spring 3443 is too low, the pulley 343 cannot be abutted against the bayonet 341, i.e. the effect of temporarily locking the rotary seat 31 cannot be achieved, at the moment, the nut can be unscrewed, then the adjusting piston 3444 is screwed, so that the adjusting piston 3444 moves towards the direction of abutting the piston 3442, then the adjusting piston 3444 is locked by screwing the nut, further the spring 3443 is compressed more tightly, and the elastic force exerted by the spring 3443 on the abutting piston 3442 is improved; when the elastic force of the spring 3443 is too high, it is difficult to overcome the elastic force of the spring 3443 by directly rotating the rotating seat 31, at this time, the nut can be loosened, then the adjusting piston 3444 is screwed, so that the adjusting piston 3444 moves in a direction away from the abutting piston 3442, and then the adjusting piston 3444 is locked by screwing the nut, so that the compression amount of the spring 3443 is reduced, and the elastic force applied by the spring 3443 to the abutting piston 3442 is reduced.

Example 3

Referring to fig. 9, in embodiment 3 of a clamping system for hydraulic pump testing according to the present invention, the difference between the present embodiment and embodiment 2 is that the rotating device further includes an adjusting assembly 35, and the adjusting assembly 35 includes a plurality of adjusting rods 351 and a plurality of bar holes 352; one end of the adjusting rod 351 is connected with the mounting block 321, and the other end of the adjusting rod is arranged on the base 4 in a penetrating manner through threaded fit; the strip holes 352 are provided on the mounting block 321, and each strip hole 352 extends toward the center of the rotary seat 31.

Specifically, the adjustment rod 351 has a screw thread, and the adjustment rod 351 is threaded through the base 4. The adjusting rod 351 is welded with the square columns 3212 of the mounting blocks 321, the strip holes 352 are formed in the square plates 3211 of the mounting blocks 321, four square-distributed strip holes 352 are formed in each square plate 3211, and bolts for fixing the square plates 3211 on the base 4 penetrate through the strip holes 352.

When the hydraulic pump 6 is fixed on the mounting plate 1, if the pump shaft of the hydraulic pump 6 is not concentric with the coupling, the bolt in the strip hole 352 is loosened first, so that the square plate 3211 can move along the strip hole 352 relative to the bolt, then the adjusting rod 351 is screwed, the distance between the mounting block 321 and the base 4 is adjusted, so that the position of the rotating seat 31 can be adjusted, and the pump shaft of the hydraulic pump 6 and the coupling can be adjusted to a concentric position.

It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (8)

1. The clamping system for testing the hydraulic pump is characterized by comprising a mounting plate (1), wherein a through hole (101) for the hydraulic pump (6) to be tested to pass through is formed in the mounting plate (1), and a clamping device (2) for fixing the hydraulic pump (6) to be tested in the through hole (101) is arranged on the mounting plate (1); the mounting plate (1) is also provided with a rotating device for rotating the mounting plate (1); the mounting plate (1) is also provided with a moving device (5) for translating the mounting plate (1);

the rotating device comprises a rotating seat (31), a locking assembly (34), a clamping assembly (32) for supporting the rotating seat (31) and an adjusting assembly (35) for adjusting the radial position of the rotating seat (31); the rotating seat (31) is rotatably arranged in the clamping assembly (32); the mounting plate (1) is arranged on the rotating seat (31); the adjusting component (35) is connected with the clamping component (32); the locking assembly (34) can prevent the rotating seat (31) from rotating;

the device also comprises a base (4), wherein the base (4) is connected with a moving device (5), and the moving device (5) can drive the base (4) to translate; the base (4) is provided with a mounting opening (41); a flange (33) is arranged on the periphery of the rotating seat (31); the clamping assembly (32) comprises a plurality of mounting blocks (321) and a plurality of rollers (322); the plurality of mounting blocks (321) are arranged on the base (4), and the plurality of mounting blocks (321) are arranged around the mounting opening (41); each mounting block (321) is rotatably provided with a plurality of rollers (322), the flange (33) is arranged between two adjacent rollers (322), and the flange (33) is in sliding contact with the rollers (322).

2. Clamping system for hydraulic pump testing according to claim 1, characterized in that the clamping device (2) comprises a clamping plate (21), a clamping assembly and a compacting assembly; the clamping plate (21) is in power connection with the clamping assembly and the compacting assembly; the clamping assembly drives the clamping plate (21) to clamp the hydraulic pump (6) to be tested; the hydraulic pump (6) to be tested is abutted against the mounting plate (1) by the clamping assembly driving clamping plate (21).

3. Clamping system for hydraulic pump testing according to claim 2, characterized in that the clamping assembly comprises a plurality of clamping drive cylinders (22), a plurality of the clamping drive cylinders (22) being provided on the mounting plate (1), and the clamping drive cylinders (22) being arranged around the through opening (101); the clamping plate (21) is in power connection with the clamping driving cylinder (22), and the clamping driving cylinder (22) can drive the clamping plate (21) to abut against the hydraulic pump (6) to be tested in the through hole (101).

4. A clamping system for hydraulic pump testing according to claim 3, characterized in that the hold-down assembly comprises a plurality of hold-down drive cylinders (23), the hold-down drive cylinders (23) being provided on the output of the hold-down drive cylinders (22); the clamping plate (21) is arranged at the output end of the compression driving cylinder (23), and the compression driving cylinder (23) can tightly support the hydraulic pump (6) in the through hole (101) on the mounting plate (1).

5. The clamping system for hydraulic pump testing according to claim 2, wherein the clamping device (2) further comprises a positioning assembly (24), the positioning assembly (24) comprising a plurality of spigot limiting plates (241) and limiting posts (242); the limiting column (242) is arranged on the spigot limiting plate (241); the spigot limiting plates (241) are arranged on the mounting plate (1), and the spigot limiting plates (241) are arranged on the periphery of the through hole (101); an arc opening is arranged on the spigot limiting plate (241), and the arc opening is concentric with the spigot of the hydraulic pump (6) to be tested.

6. The clamping system for hydraulic pump testing of claim 1, wherein the locking assembly (34) comprises a bayonet (341), a latch drive cylinder (342), an elastic member (344), and a pulley (343); the bayonet (341) is arranged on the flange (33); the bolt driving cylinder (342) is arranged on the base (4), and the output end of the bolt driving cylinder (342) can be inserted into the bayonet (341); the elastic piece (344) is arranged on the base (4); the pulley (343) is rotatably arranged on the elastic piece (344); the elastic piece (344) is used for abutting the pulley (343) on the flange (33), and one third to one half of the circumference of the pulley (343) can be clamped into the bayonet (341).

7. The clamping system for hydraulic pump testing of claim 6, wherein the adjustment assembly (35) includes a plurality of adjustment rods (351) and a plurality of bar holes (352); one end of the adjusting rod (351) is connected with the mounting block (321), and the other end of the adjusting rod is arranged on the base (4) in a penetrating manner through threaded fit; the strip holes (352) are arranged on the mounting block (321), and each strip hole (352) extends towards the center direction of the rotating seat (31).

8. Clamping system for hydraulic pump testing according to claim 1, characterized in that the moving device (5) comprises a screw (51), a nut seat (52), a guide rail (53) and a slider (54); the nut seat (52) is penetrated on the screw rod (51) through threaded fit, and the sliding block (54) is slidingly arranged on the guide rail (53); the base (4) is connected with the nut seat (52) and the sliding block (54).

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