CN218657632U - Pneumatic actuator assembly test platform - Google Patents

Abstract

The utility model discloses a pneumatic actuator assembly test bench, which comprises a frame, the frame is provided with the station of placing, assembly station and test station, the frame is equipped with place the platform on placing the station, slidable mounting has the slide chair board of reciprocating motion between assembly station and test station in the frame, fixed mounting has the center seat on the slide chair board, rotatory mounting has the swivel work head on the center seat, fixed mounting has stop device on the slide chair board, still be equipped with mechanism fixing device on the swivel work head, the frame is equipped with the test support on test station, vertical slidable mounting has the lift clamp plate by the drive of lift power device on the test support, be equipped with the drive gas circuit that communicates with the pneumatic actuator on the test station in the frame, be provided with pressure regulating valve and pressure valuator on the drive gas circuit; the position of the movable pneumatic actuating mechanism is flexibly adjusted by the test bench to carry out assembly, and meanwhile, the pneumatic actuating mechanism can be subjected to product quality test, so that manpower and material resources are saved, and the production efficiency is improved.

Description

Pneumatic actuator assembly test platform

Technical Field

The utility model relates to a pneumatic actuator assembly testboard, concretely relates to product testing technical field.

Background

In the production and installation process of the product, the product needs to be tested; the pneumatic actuating mechanism is a precise and sensitive electronic component, and accurate, real-time and comprehensive testing of all parameters of the pneumatic actuating mechanism is a basic guarantee for mastering the performance of the pneumatic actuating mechanism; pneumatic actuators are mainly divided into two broad categories, thin film and piston; the diaphragm type and piston type actuating mechanisms can be divided into two types of spring and springless type, and the spring is mainly adopted at present, and the structure of the spring comprises: the device comprises an upper membrane cover, a corrugated membrane, a lower membrane cover, a push rod, a test support, a compression spring, a spring seat, an adjusting piece, a scale and the like, wherein a support through hole placed on a rotary workbench is formed in the bottom of the test support, a telescopic through hole facilitating the extension and retraction of the push rod is formed in the top of the test support, the push rod is connected with a valve rod to control the opening or closing of a valve, the upper membrane cover and the lower membrane cover are mounted above the test support, a pressure chamber is formed between the upper membrane cover and the lower membrane cover, the pressure chamber is partitioned by the corrugated membrane to form an upper chamber and a lower chamber, the compression spring is fixedly mounted in the upper chamber through the spring seat, and the corrugated membrane is connected with the push rod to drive the push rod to move up and down; therefore, after the pneumatic actuating mechanism is assembled, the pneumatic actuating mechanism needs to be conveyed to the pneumatic actuating mechanism to test the pneumatic actuating mechanism in various aspects, at present, the assembly station of the pneumatic actuating mechanism is separated from the test station, after the assembly is completed, the assembled pneumatic actuating mechanism needs to be manually moved to a test device through a travelling crane to carry out air tightness test and push rod telescopic distance driving accuracy test, manpower and material resources are wasted, the efficiency is very low, at present, the test of the general pneumatic actuating mechanism adopts sampling detection, the detection can not be carried out as far as possible, the conditions of the pneumatic actuating mechanism in the same batch when the valve is driven to open and close are inconsistent, and the product consistency is poor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the utility model provides a pneumatic actuator assembly testboard, this testboard can accomplish pneumatic actuator's assembly on a circuit to can nimble adjustment remove pneumatic actuator's position and direction, can also carry out product quality test to pneumatic actuator simultaneously, the material resources of using manpower sparingly improve production efficiency.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a pneumatic actuator assembly and test platform, includes the frame, the frame is provided with places station, assembly station and test station, the frame is equipped with place the platform on placing the station, slidable mounting has the slide chair board of reciprocating motion between assembly station and test station in the frame, there is the center seat through detachable device fixed mounting on the slide chair board, rotatory rotary worktable is installed on the center seat in a rotating way, fixed mounting has the rotatory stop device of restriction rotary worktable on the slide chair board, still be equipped with the mechanism fixing device who fixes pneumatic actuator on rotary worktable on the rotary worktable, the frame is equipped with the test support on test station, vertical slidable mounting has the lift clamp plate by lift power device driven on the test support, lie in the frame and be equipped with the drive gas circuit with pneumatic actuator intercommunication on the test station, be provided with pressure regulating valve and pressure valuator on the drive gas circuit.

As a preferable mode, a specific mode of rotatably mounting the rotary table to the center base is as follows:

the center seat is provided with a center shaft, a bearing is sleeved on the center shaft, a bearing sleeve is sleeved outside the bearing, the bearing sleeve and the rotary workbench are also fixedly connected through a detachable device, and the center shaft is further provided with a rotary cover for limiting the axial position of the rotary workbench.

As a preferred scheme, the mechanism fixing device comprises a threaded rod which is fixed on the central shaft and extends vertically, and a cover cap and a mechanism pressing plate which is matched with the cover cap to press and fix the pneumatic actuating mechanism are mounted on the threaded rod.

As a preferred scheme, the test support including be fixed in three and above stands in the frame, the stand is the screw thread post, install lift platform on the stand, the last stand through-hole of corresponding with the stand of seting up of lift platform, rotatory mounting has the lock nut who is used for fixed lift platform on the stand.

As an optimized scheme, the limiting device comprises a limiting seat fixedly mounted on the sliding seat plate, a limiting block is mounted on the limiting seat in a swinging mode, and a limiting groove convenient for the limiting block to be clamped in is formed in the periphery of the working platform.

As a preferable scheme, a plurality of supporting rollers are arranged below the slide plate on the rack, and a protection frame for limiting the maximum moving distance of the slide plate is arranged on the rack.

Preferably, the lower surface of the pressure rising and reducing plate is provided with a buffer block for protecting the starting actuator.

Preferably, the slide plate is further provided with a universal ball support structure for supporting the rotary table.

After the technical scheme is adopted, the utility model discloses an effect is: the pneumatic actuating mechanism assembly test bench comprises a rack, wherein the rack is provided with a placing station, an assembling station and a test station, a placing platform is arranged on the placing station of the rack, a slide seat plate which can reciprocate between the assembling station and the test station is slidably mounted on the rack, a center seat is fixedly mounted on the slide seat plate through a detachable device, a rotary workbench is rotatably mounted on the center seat, a limiting device for limiting the rotation of the rotary workbench is fixedly mounted on the slide seat plate, a mechanism fixing device for fixing the pneumatic actuating mechanism on the rotary workbench is further arranged on the rotary workbench, a test support is arranged on the test station of the rack, a lifting pressure plate driven by a lifting power device is vertically and slidably mounted on the test support, a driving gas circuit communicated with the pneumatic actuating mechanism is arranged on the test station of the rack, and a pressure regulating valve and a pressure setting device are arranged on the driving gas circuit; firstly, placing components to be assembled on a placing station, placing the components on a rotary workbench for assembly, placing a test support and a push rod on the rotary workbench, then pushing a sliding seat plate to move the rotary workbench at the assembling station to the test station, placing a lower template on the test support, placing a corrugated diaphragm and a compression spring in a lower template cover, covering an upper template cover on the lower template cover, pressing the upper template cover downwards through a lifting pressure plate to tightly press the upper template cover and the lower template cover to complete assembly, forming a closed pressure chamber, then rotating the rotary workbench to enable a pneumatic actuator fixed on the rotary workbench to rotate to a proper position, limiting by a limiting device, then connecting air pipes in the upper template cover and the lower template cover, controlling air inlet pressure through a pressure regulating valve and a pressure setter, enabling the lifting degree of the push rod to fall to be in accordance with the lifting requirement range of a valve rod to be connected, namely completing the test, simultaneously placing the components required to be assembled by the next pneumatic actuator in the station, and taking away the pneumatic actuator to be assembled after the test on the station is completed, moving the sliding seat plate back to perform the test; the test board can complete the assembly of the pneumatic actuating mechanism on one line, flexibly adjust the position and the direction of the movable pneumatic actuating mechanism, and simultaneously can test the product quality of the pneumatic actuating mechanism, thereby saving manpower and material resources and improving the production efficiency.

The specific mode of rotatably installing the rotary worktable on the center seat is as follows:

the center seat is provided with a center shaft, the center shaft is sleeved with a bearing, the bearing is sleeved with a bearing sleeve, the bearing sleeve and the rotary workbench are also connected and fixed through a detachable device, and the center shaft is also provided with a rotary cover for limiting the axial position of the rotary workbench; the rotary worktable rotates by taking the central shaft as the center through the bearing, and the bearing has the characteristics of small friction damping, flexible starting, capability of simultaneously bearing radial and axial loads, easiness in maintenance and the like, so that the axial force of the pneumatic actuating mechanism placed on the rotary worktable can be effectively supported, and the smoothness of rotation is ensured.

And because the mechanism fixing device comprises a threaded rod which is fixed on the central shaft and vertically extends, a nut cap and a mechanism pressing plate which is matched with the nut cap to compress and fix the pneumatic actuating mechanism are arranged on the threaded rod, the pneumatic actuating mechanism needs to be placed on the rotary workbench, a corresponding testing support through hole is formed in the bottom of the testing support to facilitate placement, and then the pneumatic actuating mechanism and the rotary workbench synchronously rotate to facilitate assembly.

The test support comprises three or more upright columns fixed on the rack, the upright columns are threaded columns, the upright columns are provided with lifting platforms, the lifting platforms are provided with upright column through holes corresponding to the upright columns, and the upright columns are rotatably provided with locking nuts used for fixing the lifting platforms; thereby change the height of lift platform through the nut position of the rotatory nut on every stand, make the pneumatic actuating mechanism of not co-altitude of testboard adaptation like this, improve the variety of testboard.

The limiting device comprises a limiting seat fixedly arranged on the sliding seat plate, a limiting block is arranged on the limiting seat in a swinging mode, and limiting grooves convenient for the limiting block to be clamped in are formed in the periphery of the working platform; because bearing friction is little, the removal of swivel work head appears easily when carrying out the saddle removal, and need rotate swivel work head when testing, with the pneumatic actuator adjustment to suitable position back on the swivel work head, need remain motionless, consequently be equipped with the rotation that the stopper can effectively restrict swivel work head, guarantee that the assembly is not influenced.

And because the plurality of supporting rollers are arranged below the sliding seat plate on the rack, and the rack is provided with a protective frame for limiting the maximum moving distance of the sliding seat plate, the sliding seat plate can be conveniently moved, the flexibility is improved, the moving distance of the sliding seat plate is effectively limited through the protective frame, and the safety is ensured.

And because the lower surface of the pressure rising and reducing plate is provided with the buffer block for protecting the starting actuating mechanism, the upper membrane cover is effectively protected during assembly, and the accuracy of the assembly of the pneumatic actuating mechanism is ensured.

And because the slide seat plate is also provided with a universal ball supporting structure for supporting the rotary worktable, the universal ball rolls flexibly, and objects such as a working plate, a material box and the like which run on the universal ball can slide flexibly, so that the labor intensity of workers is greatly reduced, the distribution density of the universal ball can be set randomly according to different bearing requirements, the universal balls with different bearing capacities can be selected, the labor force is reduced, and the efficiency is improved.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is a front view of an embodiment of the present invention;

fig. 2 is a top view of an embodiment of the invention;

fig. 3 is a schematic structural diagram of an elevating platform part according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a slide plate seat according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a rotary table according to an embodiment of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 1A;

FIG. 7 is a schematic structural view of a pneumatic actuator;

in the drawings: 1. a frame; 2. placing a station; 3. assembling stations; 4. placing a platform; 5. a slide chair plate; 6. a protective frame; 7. supporting rollers; 8. a center seat; 9. a central shaft; 10. a threaded rod; 11. a bearing; 12. a bearing housing; 13. a rotating cover; 14. rotating the working table; 141. a limiting groove; 15. a universal ball; 16. a screw; 17. a threaded through hole; 18. covering with a film; 19. a lower film cover; 20. a limiting seat; 21. a limiting block; 22. capping; 23. a mechanism pressing plate; 24. a lifting platform; 241. an open tube; 25. a column; 26. a column through hole; 27. locking the nut; 28. a cylinder; 29. a voltage rising and falling plate; 291. a buffer block; 30. an electromagnetic valve; 31. a lifting switch; 32. a roller; 33. a test station; 34. a push rod; 35. a corrugated diaphragm; 36. a compression spring; 37. a pressure chamber; 38. the bracket is provided with a through hole.

Detailed Description

The present invention will be described in further detail with reference to the following examples.

As shown in fig. 1 to 7, a pneumatic actuator assembly test bench includes a frame 1, the frame 1 is provided with a placement station 2, an assembly station 3 and a test station 33, the frame 1 is provided with a placement platform 4 on the placement station 2, a slide seat plate 5 which reciprocates between the assembly station 3 and the test station 33 is slidably mounted on the frame 1, a center seat 8 is fixedly mounted on the slide seat plate 5 through a detachable device, a rotary worktable 14 is rotatably mounted on the center seat 8, a limiting device which limits the rotation of the rotary worktable 14 is fixedly mounted on the slide seat plate 5, a mechanism fixing device which fixes the pneumatic actuator on the rotary worktable 14 is further arranged on the rotary worktable 14, the frame 1 is provided with a test support on the test station 33, a lifting pressure plate 29 driven by a lifting power device is vertically slidably mounted on the test support, a driving gas path which is communicated with the pneumatic actuator is arranged on the frame 1 and is provided with a pressure regulating valve and a pressure valuator.

In this embodiment, the pressure regulating valve controls the process parameters such as flow, temperature, pressure and the like of the pipeline medium by driving the valve to change the sectional area between the valve core and the valve seat, so as to realize an automatic regulating function, and the pressure and the flow are sent into the pneumatic actuating mechanism at stable pressure and flow, thereby not only ensuring the normal work of the pneumatic actuating mechanism, but also ensuring the safety of a user; the pressure setter is a high-precision pressure reducing valve, is mainly used for pressure setting, can react to smaller pressure change, so that the output pressure is timely adjusted, the basic stability of the air inlet pressure of the pneumatic actuating mechanism can be kept, namely, the setting and pressure stabilizing precision is higher, and the lifting precision of the push rod 34 of the pneumatic actuating mechanism can be accurately controlled to ensure that the required requirements are met; the pressure regulating valve and the pressure valuator are products with clear principles and mature technologies, and can be obtained through purchase, so that the accuracy of the test board can be effectively improved.

Further, place the earlier stage preparation that platform 4 on the station 2 was used for carrying out pneumatic actuator, 1 width of frame is the same with slide plate 5, has effectively restricted slide plate 5's horizontal position, guarantees that slide plate 5 can carry out accurate longitudinal movement, detachable device includes the screw 16 connection, corresponding screw through-hole 17 has been seted up on center seat 8 and the slide plate 5, makes center seat 8 fix on slide plate 5 in screw through 16 screw in screw through-hole 17, makes things convenient for the dismantlement of testboard like this.

As shown in fig. 6, the rotary table 14 is rotatably mounted on the center base 8 in the following specific manner:

the central base 8 is provided with a central shaft 9, the central shaft 9 is sleeved with a bearing 11, the bearing 11 is sleeved with a bearing sleeve 12, the bearing sleeve 12 and the rotary worktable 14 are also connected and fixed through a detachable device, and the central shaft 9 is further provided with a rotary cover 13 for limiting the axial position of the rotary worktable 14; also seted up threaded through hole 17 on the bearing housing 12, swivel work head 14 passes through screw 16 and is connected with bearing housing 12, and bearing housing 12 is outside bearing 11 with bearing housing 12 suit again on center pin 9, still be equipped with another bearing 11 of pushing down bearing 11 and bearing housing 12 on the bearing 11, can effectively improve bearing 11's support nature also can guarantee pivoted smoothness nature like this, swivel work head 14 is octagon work board, and swivel work head 14 just can use center pin 9 to rotate as the centre of a circle like this, carries out axial spacing through swivel cover 13 swivel work head 14 again, thereby ensures that swivel work head 14 can not take place to become flexible at the swivel work head 14 in the rotation process screw 16 and lead to swivel work head 14 to remove, influences the assembly test.

Further, the mechanism fixing device comprises a threaded rod 10 which is fixed on the central shaft 9 and vertically extends, a cover cap 22 and a mechanism pressing plate 23 which is matched with the cover cap 22 to press and fix the pneumatic actuating mechanism are mounted on the threaded rod 10; after the pneumatic actuator is placed on the rotary worktable 14, the mechanism pressing plate 23 covers the support through hole 38 formed in the test support, and the cap 22 is screwed, so that the pneumatic actuator can synchronously rotate along with the rotary worktable 14 and can be guaranteed not to shake during movement.

As shown in fig. 1 and 2, the test support includes three or more upright posts 25 fixed on the rack 1, the upright posts 25 are threaded posts, a lifting platform 24 is installed on the upright posts 25, an upright post through hole 26 corresponding to the upright post 25 is formed in the lifting platform 24, and a lock nut 27 for fixing the lifting platform 24 is rotatably installed on the upright post 25; be equipped with four stands 25 on test station 33, four stands 25 have enclosed the rectangle region that supports lift platform 24, lift platform 24 both sides are equipped with opening pipe 241, stand through-hole 26 evenly distributed is on opening pipe 241, stand 25 passes stand through-hole 26 on lift platform 24 like this, it has lock nut 27 also rotatory installation in opening pipe 241 to be in stand through-hole 26 below rotatory installation, lock nut 27 also has lock nut 27 in opening pipe 241 simultaneously, lock nut 27 that is in stand through-hole 26 below supports the lifter plate like this, lock nut 27 that is in opening pipe 241 can effectively fix lift platform 24 not take place to rock with the lock nut 27 cooperation that is in stand through-hole 26 below, guarantee assembly safety, rotatory lock nut 27 can change lift platform 24 height simultaneously, make the pneumatic actuating mechanism of testboard adaptation co-altitude not like this, improve the variety of testboard.

As shown in fig. 1 to 5, the limiting device includes a limiting seat 20 fixedly mounted on the slide seat plate 5, a limiting block 21 is mounted on the limiting seat 20 in a swinging manner, and a limiting groove 141 for conveniently clamping the limiting block 21 is formed around the working platform; because bearing 11 frictional force is little, the removal of swivel work head 14 appears easily when carrying out the slide plate 5 and moving, and need rotate swivel work head 14 when carrying out the test, with the pneumatic actuator adjustment to suitable position back on the swivel work head 14, need remain motionless, consequently be equipped with stopper 21 and can effectively restrict swivel work head 14's rotation, guarantee that the assembly is not influenced.

In this embodiment, a plurality of supporting rollers 7 are arranged below the slide seat plate 5 on the machine frame 1, and a protection frame 6 for limiting the maximum moving distance of the slide seat plate 5 is arranged on the machine frame 1. Since the width distance of the slide seat plate 5 is limited by the machine frame 1, the slide seat plate 5 can only move linearly, the movement can be completed by adopting the directional supporting rollers 7, and the moving distance of the slide seat plate 5 is effectively limited by the protection frame 6, so that the safety is ensured.

Further, the lower surface of the pressure rising and reducing plate 29 is provided with a buffer block 291 for protecting the starting actuator, so that the upper membrane cover 18 is effectively protected during assembly, and the assembly accuracy of the pneumatic actuator is ensured.

As shown in fig. 1 and 2, the slide plate 5 is further provided with a universal ball 15 supporting structure for supporting the rotary table 14; the universal balls 15 roll flexibly, so that objects such as a working plate, a material box and the like running on the universal balls 15 can slide very flexibly, the labor intensity of workers is greatly reduced, the distribution density of the universal balls 15 can be set randomly according to different bearing requirements, and the universal balls 15 with different bearing capacities can be selected, so that the two universal balls 15 arranged at the two ends of the slide seat plate 5 can effectively reduce the bearing pressure of the bearing 11, the steering of the rotary worktable 14 is more convenient, the labor force is effectively reduced, and the efficiency is improved; the supporting roller 7 arranged below the slide seat plate 5 can be replaced by the universal ball 15 to move, the universal ball 15 can move in any direction, the rotating direction is not needed to be considered, the fault-tolerant rate is improved, and the sliding is convenient.

In this embodiment, be equipped with solenoid valve 30 on the lift power device, be equipped with the lift switch 31 through solenoid valve 30 control lift power device in frame 1, lift power device includes cylinder 28, cylinder 28 fixed mounting is on lift platform 24, and the guide arm runs through lift platform 24 and drives lift step-up and step-down plate 29 and rise or push down, and lift switch 31 is through sending the signal of telecommunication instruction, just can control cylinder 28's flexible through the conversion of solenoid valve 30, just so can drive lift step-up and step-down plate 29 and rise or descend, accomplishes the application of pressure to last membrane lid 18, accomplishes the assembly that starts actuating mechanism.

In this embodiment, be equipped with the gyro wheel 32 of convenient bulk movement on the frame 1, make things convenient for bulk movement, when disassembling the maintenance like this, conveniently with its bulk movement to required maintenance place, promote the flexibility of testboard.

The utility model discloses a theory of operation: firstly, placing components to be assembled on a placing station 2, placing the components on a rotary workbench 14 for assembly, placing a test support and a push rod 34 on the rotary workbench 14 for assembly, fixing the components through a mechanism pressing plate 23 and a cover cap 22, then pushing a slide seat plate 5 to move the rotary workbench 14 at an assembling station 3 to a test station 33, placing a lower mold plate on the test support, placing a corrugated membrane 35 and a compression spring 36 in the lower mold cover, covering an upper film cover 18 on a lower film cover 19, pressing the upper mold cover down through a lifting and lowering plate 29 to tightly press the upper film cover 18 and the lower film cover 19 to complete assembly to form a closed pressure chamber 37, then rotating the rotary workbench 14 to rotate a pneumatic actuator fixed on the rotary workbench 14 to a proper position, then clamping the pneumatic actuator to a limiting groove 141 through rotating a limiting block 21 for limiting, then connecting air pipes to the upper chamber and the lower chamber, controlling air inlet pressure through a pressure regulating valve and a pressure setter to enable the lifting and descending degree of the push rod 34 to be in accordance with the lifting and falling requirement range of a valve rod to be connected, namely, placing the pneumatic actuator in the limiting groove 141 for limiting, simultaneously, moving the pneumatic actuator 33 to the test station 2 back, and taking the test mechanism to be assembled again, and then the test station 5 to be tested.

The above-mentioned embodiments are merely descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and alterations made to the technical solution of the present invention without departing from the spirit of the present invention are intended to fall within the scope of the present invention defined by the claims.

Claims (8)

1. The utility model provides a pneumatic actuator assembly testboard, includes the frame, its characterized in that: the frame is provided with places station, assembly station and test station, the frame is equipped with place the platform on placing the station, slidable mounting has reciprocating motion's saddle board between assembly station and test station in the frame, there is the center seat through detachable device fixed mounting on the saddle board, swivel mount has swivel work head on the center seat, fixed mounting has the rotatory stop device of restriction swivel work head on the saddle board, still be equipped with on the swivel work head and fix the mechanism fixing device on swivel work head with pneumatic actuator, the frame is equipped with the test support on test station, vertical slidable mounting has the lift clamp plate by lift power device driven on the test support, lie in the frame and be equipped with the drive gas circuit with pneumatic actuator intercommunication on the test station, be provided with pressure regulating valve and pressure valuator on the drive gas circuit.

2. A pneumatic actuator assembly test station according to claim 1, wherein: the specific mode that the rotary worktable is rotatably arranged on the center seat is as follows:

the center seat is provided with a center shaft, a bearing is sleeved on the center shaft, a bearing sleeve is sleeved outside the bearing, the bearing sleeve and the rotary workbench are also fixedly connected through a detachable device, and the center shaft is further provided with a rotary cover for limiting the axial position of the rotary workbench.

3. A pneumatic actuator assembly test station according to claim 2, wherein: the mechanism fixing device comprises a threaded rod which is fixed on the central shaft and vertically extends, and a nut cap and a mechanism pressing plate which is matched with the nut cap to press and fix the pneumatic actuating mechanism are mounted on the threaded rod.

4. A pneumatic actuator assembly test station according to claim 3, wherein: the test support including being fixed in three stands in the frame and above, the stand is the screw thread post, install lift platform on the stand, the last stand through-hole that corresponds with the stand of having seted up of lift platform, rotatory mounting has the lock nut who is used for fixed lift platform on the stand.

5. The pneumatic actuator assembly test station of claim 4, wherein: the limiting device comprises a limiting seat fixedly mounted on the sliding seat plate, a limiting block is mounted on the limiting seat in a swinging mode, and limiting grooves convenient for the limiting block to be clamped into are formed in the periphery of the rotary workbench.

6. A pneumatic actuator assembly test stand according to claim 5, wherein: a plurality of supporting rollers are arranged below the sliding seat plate on the rack, and a protection frame for limiting the maximum moving distance of the sliding seat plate is arranged on the rack.

7. The pneumatic actuator assembly test station of claim 6, wherein: and the lower surface of the pressure rising and reducing plate is provided with a buffer block for protecting the starting executing mechanism.

8. A pneumatic actuator assembly test station according to claim 7, wherein: and the sliding seat is also provided with a universal ball supporting structure for supporting the rotary worktable.

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