Anti-pressure capability testing device for simulation type closed-loop control servo actuator

Abstract

The utility model belongs to the technical field of compression resistance testing, and particularly relates to a compression resistance testing device for a simulation type closed-loop control servo actuator, which comprises a base and an electric cylinder to be tested, and further comprises an adapting piece, a turnover driving mechanism; a lifting plate; the movable seat is movably connected to the bottom surface of the lifting plate; a displacement driving mechanism; the top plate is supported and fixed above the base through a plurality of supporting columns which are distributed at equal intervals in the circumferential direction; a hydraulic cylinder; a guide column; a universal rotary connecting piece; the supporting disc is connected to the top end of the universal rotating connecting piece in a turnover mode; the pressure sensor is fixed on the top surface of the supporting disc; a limiting disc; according to the utility model, the position of the connection point of the to-be-detected electric cylinder and the motion platform and the inclination angle of the to-be-detected electric cylinder can be adjusted, so that the detection result is closer to the real working scene, and the detection accuracy is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of compression resistance test, specifically relates to a kind of compression resistance testing device for analog closed-loop control servo actuator. BACKGROUND

[0002] Closed-loop control servo actuator is a kind of automation control equipment, it is compared with input (desired target value) by the feedback of output (such as position, speed, force etc.) to control system, then according to the difference (error signal) of two, to adjust the action of actuator, to realize accurate control, this feedback mechanism makes actuator can constantly correct deviation, to reach and maintain desired output state.

[0003] Electric cylinder is the common actuator of closed-loop control, wherein, servo motor is the power source of electric cylinder, commonly used ball screw and planetary reducer are made into transmission device, ball screw can convert the rotary motion of motor into linear motion, and has higher transmission efficiency and precision;Planetary reducer is used to reduce motor speed, increase output torque.

[0004] In prior art, multi-axis parallel motion platform commonly uses electric cylinder to drive, and the carrying capacity of electric cylinder is related to the safety of multi-axis parallel motion platform work, especially for some heavy load working scene, therefore, it is crucial to detect the compression resistance of electric cylinder.

[0005] At present, the existing detection equipment usually detects the compression resistance of electric cylinder alone, although it can also reflect the compression resistance performance of electric cylinder in working scene by equivalent replacement, but the error is larger, and the angle and connecting position of electric cylinder cannot be adjusted, so it is difficult to accurately detect the compression resistance performance of electric cylinder in actual working scene.

[0006] To solve the above problems, a compression resistance testing device for analog closed-loop control servo actuator is provided in the utility model. CONTENT OF UTILITY MODEL

[0007] To solve the above problems in prior art, the utility model provides a compression resistance testing device for analog closed-loop control servo actuator, which has the characteristics of convenient use, easy adjustment and high detection precision.

[0008] To achieve the above purpose, the utility model provides the following technical scheme: a compression resistance testing device for analog closed-loop control servo actuator, comprising a base and a plurality of equally spaced electric cylinders to be tested distributed along the circumferential direction, further comprising:

[0009] A plurality of adapters are equidistantly distributed in the circumferential direction and are reversibly connected to the base, and the electric cylinder to be tested is reversibly connected to the top end of the adapter;

[0010] A turnover driving mechanism is drivingly connected to the adapter for driving the adapter to turn over;

[0011] A lifting plate is located above the electric cylinder to be tested;

[0012] A moving seat is movably connected to the bottom surface of the lifting plate;

[0013] A displacement driving mechanism is drivingly connected to the moving seat for driving the moving seat to move horizontally;

[0014] A top plate is supported and fixed above the base by a plurality of support columns equidistantly distributed in the circumferential direction;

[0015] A hydraulic cylinder is fixed to the top surface of the top plate, and the piston rod of the hydraulic cylinder is fixedly connected to the lifting plate after penetrating through the top plate;

[0016] Two guide columns are fixedly connected to the top surface of the lifting plate in a symmetrical manner, and the guide columns penetrate through the top plate;

[0017] A universal rotary connector is detachably connected to the bottom end of the piston rod of the electric cylinder to be tested;

[0018] A support disc is reversibly connected to the top end of the universal rotary connector;

[0019] A pressure sensor is fixed to the top surface of the support disc;

[0020] A limiting disc is fixed to the bottom surface of the moving seat, and the top end of the pressure sensor abuts against the bottom surface of the limiting disc.

[0021] As a preferred technical scheme of the utility model, further comprising:

[0022] A plurality of limiting plates are equidistantly fixed to the bottom surface of the limiting disc, and the support disc is located inside the plurality of limiting plates.

[0023] As a preferred technical scheme of the utility model, the adapter comprises:

[0024] An adapter plate;

[0025] A first hole mounting lug, two first hole mounting lugs are symmetrically fixed to the top surface of the adapter plate, a first hole mounting block is fixed to the bottom end of the electric cylinder to be tested and is rotatably connected to the two first hole mounting lugs;

[0026] A second hole mounting block, the second hole mounting block is fixed to the bottom surface of the adapter plate and is rotatably connected to the base.

[0027] As a preferred technical scheme of the utility model, the turnover driving mechanism comprises:

[0028] A second hole mounting lug, two second hole mounting lugs are fixed to the top surface of the base at intervals, and the second hole mounting block is located between the two second hole mounting lugs;

[0029] A fixed shaft, the fixed shaft is fixed to the outer wall of the second hole mounting block, and the fixed shaft penetrates the second hole mounting lug to form a rotating structure;

[0030] A worm wheel, the worm wheel is fixed on the fixed shaft;

[0031] A third hole mounting lug, two third hole mounting lugs are symmetrically fixed to the outer wall of the second hole mounting lug;

[0032] A worm gear, the worm gear is rotatably installed between the two third hole mounting lugs and is engaged with the worm wheel;

[0033] A first driving motor, the first driving motor is fixed on the third hole mounting lug and is used for driving the worm gear to rotate.

[0034] As a preferred technical scheme of the utility model, further comprising:

[0035] A second locking bolt, the second locking bolt penetrates the first hole mounting lug and the first hole mounting block;

[0036] A second locking nut, the second locking nut is installed on the protruding end of the second locking bolt in a threaded screwing mode.

[0037] As a preferred technical scheme of the utility model, the universal rotation connecting piece comprises:

[0038] A connecting block, a third hole mounting block is fixed to the top end of the connecting block and is rotatably connected to the support disc;

[0039] A circular sleeve, a ball is fixed to the top end of the circular sleeve, and a hemispherical groove for embedding the ball is processed on the bottom surface of the connecting block;

[0040] A manual bolt is sleeved on the top end of the piston rod of the electric cylinder to be tested, and is screwed on the circular sleeve.

[0041] As a preferred technical scheme of the utility model,

[0042] Four hole mounting ears, two four hole mounting ears are symmetrically fixed to the bottom surface of the support disc, and the three hole mounting block is located between the two four hole mounting ears.

[0043] A first locking bolt, the first locking bolt penetrates the four hole mounting ear and the three hole mounting block.

[0044] A first locking nut, the first locking nut is screwed on the protruding end of the first locking bolt.

[0045] As a preferred technical scheme of the utility model, the displacement driving mechanism comprises:

[0046] Two fixed plates are fixedly arranged on the bottom surface of the lifting plate.

[0047] A threaded screw rod is rotatably arranged between the two fixed plates, and the threaded screw rod penetrates the moving seat and is connected with the moving seat by screwing.

[0048] A second driving motor is fixed to the outer wall of the fixed plate and is used for driving the threaded screw rod to rotate.

[0049] Two guide rods are symmetrically fixed between the two fixed plates, and the guide rods penetrate the moving seat.

[0050] As a preferred technical scheme of the utility model,

[0051] A square sleeve is fixed to the bottom surface of the moving seat.

[0052] A positioning block is fixed to the top surface of the limiting disc and embedded in the square sleeve.

[0053] A fixing bolt is screwed on the square sleeve.

[0054] Compared with the prior art, the utility model has the beneficial effects that:

[0055] In the utility model, the position of the connecting point of the electric cylinder to be tested and the motion platform and the inclination angle of the electric cylinder to be tested can be adjusted, so that the detection result is closer to the real working scene, and the detection accuracy is greatly improved.

[0056] The other additional advantages and beneficial effects of the utility model will be partly given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0057] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0058] Figure 1 It is a structural schematic diagram of the utility model;

[0059] Figure 2 It is an enlarged structural schematic diagram of A in the utility model Figure 1

[0060] Figure 3 It is an enlarged structural schematic diagram of the turnover driving mechanism in the utility model Figure 1

[0061] Figure 4 It is an enlarged structural schematic diagram of the displacement driving mechanism in the utility model Figure 1

[0062] Figure 5 It is a shaft measurement structural schematic diagram of the utility model.

[0063] In the drawing: 1, base; 2, to be measured electric cylinder; 21, No. 1 hole mounting block; 3, adapter; 31, adapter plate; 32, No. 1 hole mounting lug; 33, No. 2 hole mounting block; 4, turnover driving mechanism; 41, No. 2 hole mounting lug; 42, fixed shaft; 43, worm wheel; 44, No. 3 hole mounting lug; 45, worm; 46, No. 1 driving motor; 5, lifting plate; 6, moving seat; 61, square sleeve; 7, displacement driving mechanism; 71, fixed plate; 72, threaded screw rod; 73, No. 2 driving motor; 74, guide rod; 8, top plate; 81, support column; 9, hydraulic cylinder; 10, guide column; 11, universal rotary connecting piece; 111, connecting block; 1111, hemispherical groove; 112, circular sleeve; 113, ball; 114, hand bolt; 115, No. 3 hole mounting block; 12, support disc; 121, No. 4 hole mounting lug; 13, pressure sensor; 14, limit disc; 141, limit plate; 142, positioning block; 15, No. 1 locking bolt; 16, No. 1 locking nut; 17, No. 2 locking bolt; 18, No. 2 locking nut; 19, fixed bolt. DETAILED DESCRIPTION

[0064] ​​​Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0065] Please refer to Figures 1-5 The utility model provides the following technical scheme: a compression resistance testing device for a simulation type closed loop control servo actuator, comprising a base 1 and a plurality of equally spaced test electric cylinders 2 distributed along the circumferential direction, further comprising: an adapter 3, a turnover driving mechanism 4, a lifting plate 5, a moving seat 6, a displacement driving mechanism 7, a top plate 8, a hydraulic cylinder 9, a guide column 10, a universal rotary connecting piece 11, a supporting disc 12, a pressure sensor 13 and a limiting disc 14.

[0066] Further, by Figure 1 And Figure 2As shown, in the embodiment, a plurality of adapters 3 are distributed equidistantly in the circumferential direction and are reversibly connected to the base 1, the electric cylinder 2 to be tested is reversibly connected to the top end of the adapter 3, the turnover driving mechanism 4 is drivingly connected to the adapter 3 for driving the adapter 3 to turn over, the lifting plate 5 is located above the electric cylinder 2 to be tested, the moving seat 6 is movably connected to the bottom surface of the lifting plate 5, the displacement driving mechanism 7 is drivingly connected to the moving seat 6 for driving the moving seat 6 to move horizontally, the top plate 8 is supported and fixed above the base 1 by a plurality of support columns 81 distributed equidistantly in the circumferential direction, the hydraulic cylinder 9 is fixed to the top surface of the top plate 8, and the piston rod of the hydraulic cylinder 9 penetrates through the top plate 8 and is fixedly connected with the lifting plate 5, the two guide columns 10 are fixed symmetrically to the top surface of the lifting plate 5 and penetrate through the top plate 8, the top end of the piston rod of the electric cylinder 2 to be tested is detachably connected to the bottom end of the universal rotary connector 11, the support disc 12 is reversibly connected to the top end of the universal rotary connector 11, the pressure sensor 13 is fixed to the top surface of the support disc 12, the limiting disc 14 is fixed to the bottom surface of the moving seat 6, and the top end of the pressure sensor 13 abuts against the bottom surface of the limiting disc 14. After the above scheme is adopted, in use, the bottom end of the electric cylinder 2 to be tested is rotatably connected to the top end of the adapter 3, and the top end is rotatably connected to the bottom end of the universal rotary connector 11, then the hydraulic cylinder 9 is started, the lifting plate 5 is pushed down by the piston rod of the hydraulic cylinder 9, the pressure sensor 13 is pressed down by the limiting disc 14, at the same time, a downward pressure is applied to the electric cylinder 2 to be tested, the pressure value is detected by the pressure sensor 13, and the pressure resistance detection of the electric cylinder 2 to be tested is realized. When necessary, the turnover driving mechanism 4 can be started to drive the adapter 3 to turn over, the electric cylinder 2 to be tested is turned over, the inclination angle of the electric cylinder 2 to be tested is adjusted, the displacement driving mechanism 7 can also be started, the moving seat 6 is driven to move horizontally by the displacement driving mechanism 7, the position of the connecting point of the electric cylinder 2 to be tested and the motion platform is adjusted, the detection result is closer to the real working scene, and the detection accuracy is greatly improved.

[0067] Preferably, the base 1 is reversibly connected to the adapter 3 by a plurality of support columns 2 distributed equidistantly in the circumferential direction. Figure 1 and Figure 2 As shown, in the embodiment, the limiting plate 141 is fixed to the bottom surface of the limiting disc 14, and a plurality of limiting plates 141 are fixed equidistantly in the circumferential direction. The support disc 12 is located on the inner side of the plurality of limiting plates 141. After the above scheme is adopted, in use, the plurality of limiting plates 141 are used to limit the support disc 12, so as to avoid the support disc 12 from deviating from the limiting disc 14, and the reliability of the detection process is ensured.

[0068] Optionally, the base 1 is reversibly connected to the adapter 3 by a plurality of support columns 2 distributed equidistantly in the circumferential direction. Figure 1 and Figure 3As shown, in the embodiment, the adapter 3 comprises an adapter plate 31, a first hole mounting lug 32 and a second hole mounting block 33, the two first hole mounting lugs 32 are fixed symmetrically on the top surface of the adapter plate 31, the first hole mounting block 21 is fixed on the bottom end of the electric cylinder 2 to be tested and is rotationally connected with the two first hole mounting lugs 32, and the second hole mounting block 33 is fixed on the bottom surface of the adapter plate 31 and is rotationally connected with the base 1. After the above scheme is adopted, in use, the adapter 3 is rotationally connected with the base 1 and the electric cylinder 2 to be tested, so that the electric cylinder 2 to be tested has bidirectional rotational freedom, can effectively adapt to various detection states, and makes the detection result closer to the real situation.

[0069] Optionally, the adapter 3 is rotationally connected with the base 1 and the electric cylinder 2 to be tested. Figure 1 and Figure 3 As shown, in the embodiment, the turnover driving mechanism 4 comprises a second hole mounting lug 41, a fixed shaft 42, a worm gear 43, a third hole mounting lug 44, a worm 45 and a first driving motor 46, the two second hole mounting lugs 41 are fixed on the top surface of the base 1 at intervals, the second hole mounting block 33 is located between the two second hole mounting lugs 41, the fixed shaft 42 is fixed on the outer wall of the second hole mounting block 33, and the fixed shaft 42 penetrates the second hole mounting lug 41 to form a rotating structure, the worm gear 43 is fixed on the fixed shaft 42, the two third hole mounting lugs 44 are fixed symmetrically on the outer wall of the second hole mounting lug 41, the worm 45 is rotationally mounted between the two third hole mounting lugs 44 and is engaged with the worm gear 43, and the first driving motor 46 is fixed on the third hole mounting lug 44 and is used to drive the worm 45 to rotate. After the above scheme is adopted, in use, the first driving motor 46 is started to drive the worm 45 to rotate, the worm 45 drives the worm gear 43 to rotate through the engagement, and the worm gear 43 drives the adapter 3 to overturn through the fixed shaft 42, so that the electric cylinder 2 to be tested is overturned and the inclination angle of the electric cylinder 2 to be tested is adjusted, which can effectively adapt to various detection states and makes the detection result closer to the real situation.

[0070] Preferably, the adapter 3 is rotationally connected with the base 1 and the electric cylinder 2 to be tested. Figure 1 and Figure 3 As shown, in the embodiment, the adapter 3 comprises an adapter plate 31, a first hole mounting lug 32 and a second hole mounting block 33, the two first hole mounting lugs 32 are fixed symmetrically on the top surface of the adapter plate 31, the first hole mounting block 21 is fixed on the bottom end of the electric cylinder 2 to be tested and is rotationally connected with the two first hole mounting lugs 32, and the second hole mounting block 33 is fixed on the bottom surface of the adapter plate 31 and is rotationally connected with the base 1. After the above scheme is adopted, in use, the adapter 3 is rotationally connected with the base 1 and the electric cylinder 2 to be tested, so that the electric cylinder 2 to be tested has bidirectional rotational freedom, can effectively adapt to various detection states, and makes the detection result closer to the real situation.

[0071] Preferably, the adapter 3 is rotationally connected with the base 1 and the electric cylinder 2 to be tested. Figure 1 and Figure 2As shown, in the embodiment, the universal rotation connecting piece 11 comprises a connecting block 111, a circular sleeve 112 and a hand bolt 114, a No. 3 hole mounting block 115 is fixed at the top end of the connecting block 111 and rotationally connected with the support disc 12, a ball 113 is fixed at the top end of the circular sleeve 112, a hemispherical groove 1111 is processed on the bottom surface of the connecting block 111 for embedding the ball 113, the circular sleeve 112 is sleeved on the top end of the piston rod of the electric cylinder 2 to be detected, and the hand bolt 114 is installed on the circular sleeve 112 in a threaded manner. After the above scheme is adopted, in use, the cooperation of the ball 113 and the hemispherical groove 1111 allows the support disc 12 to be freely turned within a safe range relative to the electric cylinder 2 to be detected, and can effectively adapt to various detection states, so that the detection result is closer to the actual situation.

[0072] In addition, the circular sleeve 112 is sleeved on the top end of the piston rod of the electric cylinder 2 to be detected, and the hand bolt 114 is tightened, so that the universal rotation connecting piece 11 is stably installed, and the universal rotation connecting piece 11 is also easy to disassemble.

[0073] Preferably, by Figure 1 and Figure 2 As shown, in the embodiment, it further comprises a No. 4 hole mounting lug 121, a No. 1 locking bolt 15 and a No. 1 locking nut 16, the two No. 4 hole mounting lugs 121 are fixed on the bottom surface of the support disc 12 in a symmetrical manner, the No. 3 hole mounting block 115 is located between the two No. 4 hole mounting lugs 121, the No. 1 locking bolt 15 penetrates through the No. 4 hole mounting lug 121 and the No. 3 hole mounting block 115, and the No. 1 locking nut 16 is installed on the protruding end of the No. 1 locking bolt 15 in a threaded manner. After the above scheme is adopted, in use, the No. 1 locking bolt 15 serves as a rotation shaft between the support disc 12 and the universal rotation connecting piece 11, the stability of the connection between the support disc 12 and the universal rotation connecting piece 11 is ensured through the No. 1 locking nut 16, and the connection and disassembly of the support disc 12 and the universal rotation connecting piece 11 are facilitated.

[0074] Optionally, by Figure 1 and Figure 4As shown, in the embodiment, the displacement driving mechanism 7 comprises: fixed plates 71, a threaded screw rod 72, a second driving motor 73 and guide rods 74, the two fixed plates 71 are fixedly arranged on the bottom surface of the lifting plate 5, the threaded screw rod 72 is rotatably arranged between the two fixed plates 71, and the threaded screw rod 72 penetrates through the moving seat 6 and is connected with the moving seat 6 in a threaded screw manner, the second driving motor 73 is fixedly arranged on the outer wall of the fixed plate 71 and used for driving the threaded screw rod 72 to rotate, and the two guide rods 74 are fixedly arranged between the two fixed plates 71 and penetrate through the moving seat 6, after the above scheme is used, in use, the second driving motor 73 is started to drive the threaded screw rod 72 to rotate, under the threaded screw effect, the moving seat 6 moves, and simultaneously drives the limiting disc 14 to move, so that the position of the connecting point of the measured electric cylinder 2 and the motion platform is adjusted.

[0075] Preferably, by Figure 1 、 Figure 2 and Figure 5 As shown, in the embodiment, the displacement driving mechanism 7 comprises: fixed plates 71, a threaded screw rod 72, a second driving motor 73 and guide rods 74, the two fixed plates 71 are fixedly arranged on the bottom surface of the lifting plate 5, the threaded screw rod 72 is rotatably arranged between the two fixed plates 71, and the threaded screw rod 72 penetrates through the moving seat 6 and is connected with the moving seat 6 in a threaded screw manner, the second driving motor 73 is fixedly arranged on the outer wall of the fixed plate 71 and used for driving the threaded screw rod 72 to rotate, and the two guide rods 74 are fixedly arranged between the two fixed plates 71 and penetrate through the moving seat 6, after the above scheme is used, in use, the second driving motor 73 is started to drive the threaded screw rod 72 to rotate, under the threaded screw effect, the moving seat 6 moves, and simultaneously drives the limiting disc 14 to move, so that the position of the connecting point of the measured electric cylinder 2 and the motion platform is adjusted.

[0076] It should be noted that the first driving motor 46, the second driving motor 73, the hydraulic cylinder 9 and the pressure sensor 13 are all conventional devices purchased in the market, and the built-in power switch can be selected by the person skilled in the art according to the use requirement, the working principle is the common knowledge of the person skilled in the art and has been fully disclosed in the prior art, and therefore will not be described in detail herein.

[0077] The circuit connection of the utility model relates to the usual means of the person skilled in the art, and the technical inspiration can be obtained through limited tests, and belongs to the prior art widely used.

[0078] The components not described in detail herein are the prior art.

[0079] The working principle and use process of the utility model are as follows: the anti-pressure capability testing device is used to rotate the bottom end of the measured electric cylinder 2 to the top end of the adapter 3, rotate the top end to the bottom end of the universal rotary connecting piece 11, then start the hydraulic cylinder 9, push the lifting plate 5 downward by the piston rod of the hydraulic cylinder 9, press the pressure sensor 13 downward through the limiting disc 14, simultaneously apply downward pressure to the measured electric cylinder 2, detect the pressure value by the pressure sensor 13, and realize the detection of the pressure resistance of the measured electric cylinder 2.

[0080] When necessary, the first driving motor 46 can be started to drive the worm 45 to rotate, the worm 45 drives the worm gear 43 to rotate through meshing, the worm gear 43 drives the adapter 3 to overturn through the fixed shaft 42, the electric cylinder 2 to be detected is overturned, the inclination angle of the electric cylinder 2 to be detected is adjusted, various different detection states can be effectively adapted, and the detection result is closer to the real situation;

[0081] In another aspect of the utility model, the second driving motor 73 can also be started to drive the threaded screw rod 72 to rotate, under the threaded screwing, the moving seat 6 moves, and the limiting disc 14 is driven to move, the position of the electric cylinder 2 to be detected and the movement platform connecting point is adjusted, the detection result is closer to the real working scene, and the detection accuracy is further improved.

[0082] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement is carried out to part technical features. Any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model should be contained in the protection scope of the utility model.

Claims

1. A compression resistance testing device for analog closed-loop control servo actuators, comprising a base (1) and a plurality of to-be-tested electric cylinders (2) distributed equidistantly in a circumferential direction, characterized in that, Also comprising: an adapter (3), a plurality of said adapters (3) are distributed equidistantly along the circumferential direction and are reversibly connected to said base (1), said electric cylinder to be tested (2) is reversibly connected to the top end of said adapter (3); a turnover driving mechanism (4), said turnover driving mechanism (4) is drivingly connected to said adapter (3) for driving said adapter (3) to turn over; a lifting plate (5), said lifting plate (5) is located above said electric cylinder to be tested (2); a moving seat (6), said moving seat (6) is movably connected to the bottom surface of said lifting plate (5); a displacement driving mechanism (7), said displacement driving mechanism (7) is drivingly connected to said moving seat (6) for driving said moving seat (6) to move horizontally; a top plate (8), said top plate (8) is supported and fixed above said base (1) by a plurality of support columns (81) distributed equidistantly along the circumferential direction; a hydraulic cylinder (9), said hydraulic cylinder (9) is fixed to the top surface of said top plate (8), and the piston rod of said hydraulic cylinder (9) penetrates through said top plate (8) and is fixedly connected with said lifting plate (5); a guide column (10), two said guide columns (10) are fixed symmetrically to the top surface of said lifting plate (5), and said guide columns (10) penetrate through said top plate (8); a universal rotary connector (11), the top end of the piston rod of said electric cylinder to be tested (2) is detachably connected to the bottom end of the universal rotary connector (11); a support disc (12), said support disc (12) is reversibly connected to the top end of said universal rotary connector (11); a pressure sensor (13), said pressure sensor (13) is fixed to the top surface of said support disc (12); a limiting disc (14), said limiting disc (14) is fixed to the bottom surface of said moving seat (6), and the top end of said pressure sensor (13) abuts against the bottom surface of said limiting disc (14).

2. The compression resistance testing device for analog closed loop control servo actuators according to claim 1, characterized in that: Also comprising: a limiting plate (141), a plurality of said limiting plates (141) are fixed equidistantly along the circumferential direction to the bottom surface of said limiting disc (14), and said support disc (12) is located inside a plurality of said limiting plates (141); said universal rotary connector (11) comprises: a connecting block (111), a No. 3 hole mounting block (115) is fixed to the top end of said connecting block (111) and is rotationally connected to said support disc (12); a circular sleeve (112), a ball (113) is fixed to the top end of said circular sleeve (112), and a hemispherical groove (1111) for embedding said ball (113) is processed on the bottom surface of said connecting block (111); a hand bolt (114), said circular sleeve (112) is sleeved on the top end of the piston rod of said electric cylinder to be tested (2), and said hand bolt (114) is installed on said circular sleeve (112) by screwing.

3. The compression resistance testing device for analog closed loop control servo actuators of claim 1, wherein: said adapter (3) comprises: an adapter plate (31). A first hole mounting lug (32) is fixed to the top surface of the adapter plate (31) in a symmetrical manner, and a first hole mounting block (21) is fixed to the bottom end of the electric cylinder (2) and is rotatably connected to the two first hole mounting lugs (32); A second hole mounting block (33) is fixed to the bottom surface of the adapter plate (31) and is rotatably connected to the base (1).

4. The compression resistance testing device for analog closed loop control servo actuators of claim 3, wherein: The flip drive mechanism (4) comprises: A second hole mounting lug (41) is fixed to the top surface of the base (1) in a spaced manner, and the second hole mounting block (33) is located between the two second hole mounting lugs (41); A fixed shaft (42) is fixed to the outer wall of the second hole mounting block (33), and the fixed shaft (42) penetrates the second hole mounting lug (41) to form a rotating structure; A worm gear (43) is fixed to the fixed shaft (42); A third hole mounting lug (44) is fixed to the outer wall of the second hole mounting lug (41) in a symmetrical manner; A worm (45) is rotatably mounted between the two third hole mounting lugs (44) and is engaged with the worm gear (43); A first drive motor (46) is fixed to the third hole mounting lug (44) and is used to drive the worm (45) to rotate.

5. The compression resistance testing device for analog closed loop control servo actuators of claim 3, wherein: Further comprising: A second locking bolt (17) penetrates the first hole mounting lug (32) and the first hole mounting block (21); A second locking nut (18) is installed on the protruding end of the second locking bolt (17) by screwing.

6. The compression resistance testing device for analog closed loop control servo actuators of claim 2, wherein: Further comprising: A fourth hole mounting lug (121) is fixed to the bottom surface of the support disc (12) in a symmetrical manner, and the third hole mounting block (115) is located between the two fourth hole mounting lugs (121); A first locking bolt (15) penetrates the fourth hole mounting lug (121) and the third hole mounting block (115); A first locking nut (16) is installed on the protruding end of the first locking bolt (15) by screwing.

7. The compression resistance testing device for analog closed loop control servo actuators of claim 1, wherein: The displacement drive mechanism (7) comprises: Two fixed plates (71) are fixed to the bottom surface of the lifting plate (5) in a spaced manner; A threaded screw rod (72) is rotatably mounted between the two fixed plates (71), and the threaded screw rod (72) penetrates the moving seat (6) and is connected to the moving seat (6) by screwing; A second drive motor (73) is fixed to the outer wall of the fixed plate (71) and is used to drive the threaded screw rod (72) to rotate; A guide rod (74) is fixed symmetrically between the two fixing plates (71), and penetrates the moving seat (6).

8. The compression resistance testing device for analog closed loop control servo actuators of claim 1, wherein: Further comprising: A square sleeve (61) is fixed to the bottom surface of the moving seat (6); A positioning block (142) is fixed to the top surface of the limiting disc (14) and embedded in the square sleeve (61); A fixing bolt (19) is installed on the square sleeve (61) by screwing.

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