A general vertical servo loading test bench

Abstract

The present invention belongs to the technical field of servo loading tests, and particularly discloses a general vertical servo loading test bench, which includes a tabletop and a test board vertically installed on the top of the tabletop. A servo body is placed on the front side of the test board. The output end of the front side of the servo body is connected to a rocker arm. One end of the rocker arm is connected to a weight by a pull bar. An encoder is connected to the front side of the test board by a cross bar, and the pull bar is wound around the output end of the encoder. In the present invention, the upper slider drives the pressing plate at the top to move downwards due to the first elastic piece at the top and the weight of the upper slider itself. The bottom surface of the pressing plate at the top gradually contacts the servo body. The first elastic piece at the top and the first elastic piece at the bottom cooperate to facilitate the two pressing plates to cooperate to clamp the servo body, complete the limitation of the servo body, and facilitate the adaptation and placement of servo bodies of different sizes between the two pressing plates.

Description

Technical Field

[0001] The present invention belongs to the technical field of servo loading tests, and particularly relates to a general vertical servo loading test bench. Background Art

[0002] A servo is a position or angle servo driver, suitable for control systems that require continuously changing and maintainable angles. The load test is a key experiment for the driving performance of the servo. By loading the rated external load onto the output shaft of the servo and driving the servo to work properly for a certain period of time, observing its load operation conditions, and then achieving the test of the driving performance of the servo.

[0003] During the process of testing the servo, the servo needs to be limited on the servo test bracket. The servo test bracket installs the potentiometer and the servo together through pre-designed dimensions. Although the bracket will not produce large deformations during operation and can complete the normal operation of the servo, in the performance test of the servo, different types of servos need to replace different test tooling. The installation gap between the special bracket and the servo is small, and it is impossible to limit other types of servos.

[0004] Therefore, it is very necessary to invent a general vertical servo loading test bench to solve the above problems. Summary of the Invention

[0005] In view of the above problems, the present invention provides a general vertical servo loading test bench to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A general vertical servo loading test bench includes a tabletop and a test board vertically installed on the top of the tabletop. The front side of the test board is provided with a servo body. The output end of the front side of the servo body is connected with a rocker arm. One end of the rocker arm is connected with a weight by a pull bar, and the front side of the test board is connected with an encoder by a cross bar. The pull bar is wound around the output end of the encoder;

[0007] The servo body is limited to the front side of the test board by a clamping component. The clamping component includes a pressing plate, an outer frame, an upper slider, a lower slider, and a first elastic sheet;

[0008] Two outer frames are fixed to the front side of the test board in a vertically opposite manner. The upper slider is inside the top outer frame, and the lower slider is inside the bottom outer frame. A first elastic sheet is arranged inside the outer frame. The bottom end of the first elastic sheet at the top fits against the top surface of the upper slider, and the top end of the first elastic sheet at the bottom fits against the bottom surface of the lower slider. Pressing plates are fixed to the bottom surface of the upper slider and the top surface of the lower slider. The elasticity of the first elastic sheet enables the two pressing plates to cooperate to clamp the servo body.

[0009] Further, a vertically arranged screw rod is spirally inserted into the top surface of the top outer frame, and the bottom end of the screw rod corresponds to the top surface of the upper slider.

[0010] Further, circular plates are fixed to both side surfaces of the upper slider and the lower slider by connecting rods. The inner side surfaces of the circular plates are in contact with the outer side surfaces of the outer frame. Vertical grooves corresponding to the connecting rods are provided on the side surfaces of the outer frame. Limiting bars are embedded inside the vertical grooves, and the connecting rods are sleeved on the surfaces of the limiting bars.

[0011] Further, the clamping member further includes an arc-shaped plate, a pressing block, and an elastic member for limiting the pressing block;

[0012] Arc-shaped plates are fixed to the rear side surfaces of both pressing plates. Through grooves corresponding to the arc-shaped plates are provided on the surface of the test plate. The pressing plates moving up and down drive the arc-shaped plates to move up and down inside the through grooves. The elastic member is installed at the center of the arc-shaped plate. The elastic member is connected to a pressing block. The two pressing blocks are arranged oppositely. A slope is provided on the inner side of the pressing block. Chamfered surfaces are provided at the top and bottom of the rear side surface of the servo body. The two slopes correspond to the two chamfered surfaces one by one, and the slope is in contact with the chamfered surface.

[0013] Further, convex blocks are fixed to the top surface and the bottom surface of the rear side part of the servo body, and the front side surface of the convex block is in contact with the rear side surface of the pressing plate.

[0014] Further, the elastic member includes a rotating plate, a second elastic sheet, and a plug rod;

[0015] The two rotating plates are in relative cooperation. The distance between the inner ends of the two rotating plates is less than the distance between the outer ends of the two rotating plates. The two plug rods correspond to the two rotating plates one by one. The front end of the plug rod is inserted into the inner end of the rotating plate. The rear end of the plug rod is connected to the pressing block. A convex rod is fixed to the rear side surface of the outer end of the rotating plate. The two convex rods are connected by a second elastic sheet. An activity groove corresponding to the elastic member is provided at the front side part of the arc-shaped plate, and an arc-shaped groove corresponding to the convex rod is provided on the rear side surface of the activity groove.

[0016] Further, the elastic member further includes an outer arc strip and a rotating groove;

[0017] The inner end of the outer arc strip is connected to the outer end of the rotating plate. Rotating grooves are provided on both sides of the activity groove, and the outer end of the outer arc strip penetrates through the rotating groove.

[0018] Further, the outer arc strip is made of rubber material. When the rotating rotating plate causes the outer arc strip to move inside the rotating groove, the rotating groove deforms the outer arc strip.

[0019] The technical effects and advantages of the present invention:

[0020] 1. In the present invention, the first elastic piece at the top and the weight of the upper slider cause the upper slider to drive the pressing plate at the top to move downward. The bottom surface of the pressing plate at the top gradually contacts the servo body. The first elastic piece at the top and the first elastic piece at the bottom cooperate to facilitate the two pressing plates to cooperate to clamp the servo body, completing the limitation of the servo body and facilitating the adaptation and placement of servo bodies of different sizes between the two pressing plates.

[0021] 2. In the present invention, the elastic force of the second elastic piece causes the two extrusion blocks to slide on the chamfered surface by using the inclined surface, and the two extrusion blocks approach each other. The movement of the extrusion blocks causes the servo body to move forward. Through the limitation of the convex block, the stability of the servo body during the test is ensured, and the situation of the servo body swinging left and right during the test is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall schematic diagram of the general vertical servo loading test bench according to the embodiment of the present invention;

[0023] Figure 2 is the schematic diagram of the clamping component cooperating to clamp the servo body according to the embodiment of the present invention;

[0024] Figure 3 is the schematic diagram of the upper slider moving up and down inside the outer frame according to the embodiment of the present invention;

[0025] Figure 4 is the schematic diagram of the rear side of the pressing plate connecting the arc plate according to the embodiment of the present invention;

[0026] Figure 5 is the schematic three-dimensional sectional view of the elastic component according to the embodiment of the present invention;

[0027] In the figure: 1, tabletop; 2, test board; 3, servo body; 4, rocker arm; 5, weight; 6, encoder; 7, pressing plate; 8, outer frame; 9, upper slider; 10, lower slider; 11, first elastic piece; 12, screw; 13, round plate; 14, limiting bar; 15, arc plate; 16, extrusion block; 17, inclined surface; 18, chamfered surface; 19, convex block; 20, rotating plate; 21, second elastic piece; 22, inserting rod; 23, convex rod; 24, arc groove; 25, outer arc strip; 26, rotating groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0029] The present invention provides a general vertical servo loading test bench, as Figures 1 to 4As shown in the figure, it includes a tabletop 1 and a test board 2 vertically installed on the top of the tabletop 1. A servo body 3 is placed on the front side of the test board 2. The output end on the front side of the servo body 3 is connected to a rocker arm 4. One end of the rocker arm 4 is connected to a weight 5 by a pull bar. And an encoder 6 is connected to the front side of the test board 2 by a cross bar. The pull bar is wound around the output end of the encoder 6. The servo body 3 is limited to the front side part of the test board 2 by a clamping component. At this time, the rocker arm 4 is installed on the output end on the front side of the servo body 3. The pull bar is wound around the output end of the encoder 6, and the bottom end of the pull bar is connected to the weight 5. The servo body 3 is connected to a power supply device and a controller.

[0030] Start the controller. The controller controls the rocker arm 4 of the servo body 3 to rotate. The rotating rocker arm 4 pulls the weight 5 to move up and down by the pull bar. And the output end of the encoder 6 facilitates the change of the pulling force direction of the pull bar, so that the weight 5 can move in the vertical direction, avoiding the dispersion of the pulling force of the weight 5 on the rocker arm 4 due to deviation. The swinging rocker arm 4 makes the output end of the encoder 6 rotate by the pull bar. The encoder 6 transmits the rotating data to the display. By using the number of rotating circles, the moving distance after the rotation of the rocker arm 4 can be known, and it can be judged whether it meets the detection standard, so as to realize the online test of whether the rotation angle of the rocker arm 4 of the servo body 3 is qualified. The test method is simple and effective.

[0031] The clamping component includes a pressing plate 7, an outer frame 8, an upper slider 9, a lower slider 10 and a first elastic sheet 11. Two outer frames 8 are fixed on the front side of the test board 2 in an up-and-down relative manner. The upper slider 9 is inside the top outer frame 8, and the lower slider 10 is inside the bottom outer frame 8. A first elastic sheet 11 is arranged inside the outer frame 8. The bottom end of the first elastic sheet 11 at the top fits on the top surface of the upper slider 9, and the top end of the first elastic sheet 11 at the bottom fits on the bottom surface of the lower slider 10. Pressing plates 7 are fixed on the bottom surface of the upper slider 9 and the top surface of the lower slider 10. The elasticity of the first elastic sheet 11 makes the two pressing plates 7 cooperate to clamp the servo body 3. The weight of the lower slider 10 and the bottom pressing plate 7 cooperate to squeeze the first elastic sheet 11 at the bottom. At this time, the first elastic sheet 11 at the bottom supports the bottom pressing plate 7. The upper slider 9 is moved up by the pressing plate 7. The moving-up upper slider 9 cooperates to squeeze the first elastic sheet 11 inside the outer frame 8, and the upper slider 9 gradually moves up into the top outer frame 8 until the top surface of the top pressing plate 7 contacts the bottom of the top outer frame 8. At this time, the servo body 3 to be tested is placed on the top surface of the bottom pressing plate 7. The first elastic sheet 11 at the bottom absorbs the impact force when the servo body 3 is placed on the top surface of the bottom pressing plate 7, avoiding the collision damage of the servo body 3 during the placement process.

[0032] After the servo body 3 is placed, slowly release the pulling force applied to the top pressing plate 7. The first elastic piece 11 at the top and the weight of the upper slider 9 itself cause the upper slider 9 to drive the top pressing plate 7 to move downward. The bottom surface of the top pressing plate 7 gradually contacts the servo body 3. The first elastic pieces 11 at the top and the bottom cooperate to facilitate the two pressing plates 7 to cooperate to clamp the servo body 3, completing the limitation of the servo body 3 and facilitating the adaptation and placement of servo bodies 3 of different sizes between the two pressing plates 7.

[0033] In Figures 1 to 4 , a vertically arranged screw rod 12 is spirally inserted into the top surface of the outer frame 8 at the top. The bottom end of the screw rod 12 corresponds to the top surface of the upper slider 9. After the two pressing plates 7 clamp the servo body 3 due to the elastic force of the two first elastic pieces 11, turn the screw rod 12. Since the screw rod 12 is spirally inserted into the top surface of the outer frame 8 at the top, the rotating screw rod 12 moves downward inside the outer frame 8 at the top until the bottom end of the screw rod 12 contacts the bottom surface of the upper slider 9. Then continue to turn the screw rod 12. The rotating screw rod 12 uses the upper slider 9 and the top pressing plate 7 to make the servo body 3 move downward. The downward moving servo body 3 uses the bottom pressing plate 7 to make the lower slider 10 squeeze the first elastic piece 11 at the bottom until the bottom surface of the bottom pressing plate 7 contacts the top of the outer frame 8 at the bottom. Then, by turning the screw rod 12, it is convenient for the upper slider 9, the top pressing plate 7, the servo body 3, the bottom pressing plate 7, and the lower slider 10 to move downward synchronously. At this time, the two pressing plates 7 tightly clamp the servo body 3, preventing the pressing plates 7 from shaking during the test of the servo body 3 and ensuring the stability of the servo body 3 during the test.

[0034] In Figures 2 to 4 , circular plates 13 are fixed to both side surfaces of the upper slider 9 and the lower slider 10 by connecting rods. The inner side surfaces of the circular plates 13 are attached to the outer side surfaces of the outer frame 8. Vertical grooves corresponding to the connecting rods are provided on the side surfaces of the outer frame 8, and limiting strips 14 are embedded inside the vertical grooves. The connecting rods are sleeved on the surfaces of the limiting strips 14. When the upper slider 9 and the lower slider 10 move up and down, since the inner side surfaces of the circular plates 13 are attached to the outer side surfaces of the outer frame 8, the moving upper slider 9 and lower slider 10 use the connecting rods to make the circular plates 13 move synchronously, and the connecting rods move synchronously on the surfaces of the limiting strips 14 inside the vertical grooves. The upper slider 9 and the lower slider 10 are limited by the limiting strips 14 and the circular plates 13, preventing the upper slider 9 and the lower slider 10 from shifting during the up and down movement, so that the pressing plates 7 are always in a horizontal state.

[0035] In Figure 2 , Figure 4 and Figure 5Among them, the clamping component further includes an arc-shaped plate 15, a pressing block 16, and an elastic component for limiting the pressing block 16; arc-shaped plates 15 are fixed to the rear sides of both pressing plates 7, and through grooves corresponding to the arc-shaped plates 15 are provided on the surface of the test plate 2. The pressing plate 7 that moves up and down drives the arc-shaped plate 15 to move up and down inside the through groove. The elastic component is installed at the center of the arc-shaped plate 15, and the elastic component is connected to the pressing block 16. The two pressing blocks 16 are arranged oppositely, and an inclined surface 17 is provided on the inner side of the pressing block 16. Chamfered surfaces 18 are provided at the top and bottom of the rear side of the servo body 3. The two inclined surfaces 17 correspond to the two chamfered surfaces 18 one by one, and the inclined surface 17 is in contact with the chamfered surface 18. When the servo body 3 is placed on the top surface of the bottom pressing plate 7, the chamfered surface 18 at the bottom of the rear end of the servo body 3 is in contact with the inclined surface 17 at the bottom, and the elastic component causes the bottom pressing block 16 to lift the rear part of the servo body 3.

[0036] When the upper slider 9 drives the upper pressing plate 7 to move downward, the upper pressing block 16 first contacts the chamfered surface 18 at the top of the rear end of the servo body 3. When the upper slider 9 continues to move downward, the two pressing plates 7 make the servo body 3 gradually tend to be horizontal. The rear part of the servo body 3 presses the bottom pressing block 16, and the reaction force of the rear part of the servo body 3 on the upper pressing block 16 causes the upper elastic component to contract. At this time, the inclined surface 17 of the pressing block 16 and the chamfered surface 18 have a dislocation movement. At this time, the elastic forces of the two elastic components are transmitted to the rear part of the servo body 3 through the dislocation movement, and the elastic forces of the two elastic components push the servo body 3 forward. Since convex blocks 19 are fixed to both the top surface and the bottom surface of the rear part of the servo body 3, the forward-moving servo body 3 drives the convex blocks 19 to move synchronously until the front side of the convex block 19 is in contact with the rear side of the pressing plate 7. The elastic force of the elastic component and the limitation of the convex block 19 cooperate to prevent the servo body 3 from swinging left and right during the test.

[0037] In Figure 2 , Figure 4 and Figure 5Among them, the elastic component includes a rotating plate 20, a second elastic piece 21, and a plug rod 22; the two rotating plates 20 are relatively matched, the distance between the inner ends of the two rotating plates 20 is less than the distance between their outer ends, the two plug rods 22 correspond to the two rotating plates 20 one by one, the front end of the plug rod 22 is inserted into the inner end of the rotating plate 20, the rear end of the plug rod 22 is connected to the extrusion block 16, a convex rod 23 is fixed on the rear side surface of the outer end of the rotating plate 20, the two convex rods 23 are connected by the second elastic piece 21, an activity groove corresponding to the elastic component is arranged at the front side part of the arc-shaped plate 15, and an arc-shaped groove 24 corresponding to the convex rod 23 is arranged on the rear side surface of the activity groove. The pressure of the steering gear body 3 on the extrusion block 16 makes the extrusion block 16 approach the arc-shaped plate 15. Since the extrusion block 16 limits the inner end of the rotating plate 20 by the plug rod 22, the moving extrusion block 16 makes the inner end of the rotating plate 20 approach the arc-shaped plate 15 by the plug rod 22, and the rotating plate 20 is obliquely placed. At this time, the rotating plate 20 rotates driven by the plug rod 22, the bottom end of the rotating plate 20 slides inside the arc-shaped groove 24 by the convex rod 23, and the distance between the two opposite convex rods 23 gradually expands. The two convex rods 23 moving away from each other cooperate to pull the second elastic piece 21. At this time, the elastic force of the second elastic piece 21 is applied to the extrusion block 16 through the two rotating plates 20 and the plug rod 22. Under the action of the elastic force, the extrusion block 16 slides on the chamfer surface 18 by the inclined surface 17, and the two extrusion blocks 16 approach each other. The movement of the extrusion block 16 makes the steering gear body 3 move forward. Through the limitation of the convex block 19, the stability of the steering gear body 3 during the test is ensured.

[0038] In Figure 4 and Figure 5 Among them, the elastic component further includes an outer arc strip 25 and a rotating groove 26; the inner end of the outer arc strip 25 is connected to the outer end of the rotating plate 20, rotating grooves 26 are arranged on both sides of the activity groove, and the outer end of the outer arc strip 25 penetrates through the rotating groove 26. The outer arc strip 25 is made of rubber material. When the rotating rotating plate 20 makes the outer arc strip 25 move inside the rotating groove 26, the rotating groove 26 deforms the outer arc strip 25. When the distance between the outer ends of the two rotating plates 20 gradually increases, the outer ends of the rotating plates 20 make the outer arc strip 25 move outward inside the rotating groove 26. At this time, the rotating rotating plate 20 deforms the outer arc strip 25, and the elastic force of the deformed outer arc strip 25 is applied to the extrusion block 16 through the rotating plate 20.

[0039] The working principle of the present invention:

[0040] Refer to Figures 1 to 5As shown, the pressing plate 7 is used to move the upper slider 9 upward. The upward-moving upper slider 9 cooperates with the first elastic sheet 11 inside the outer frame 8, and the upper slider 9 gradually moves upward to the inside of the top outer frame 8 until the top surface of the top pressing plate 7 contacts the bottom of the top outer frame 8. At this time, the servo body 3 to be tested is placed on the top surface of the bottom pressing plate 7, and the first elastic sheet 11 at the bottom is used to absorb the impact force when the servo body 3 is placed on the top surface of the bottom pressing plate 7, avoiding collision damage to the servo body 3 during the placement process.

[0041] After the servo body 3 is placed, the pulling force applied to the top pressing plate 7 is slowly released. The first elastic sheet 11 at the top and the weight of the upper slider 9 itself cause the upper slider 9 to drive the top pressing plate 7 to move downward. The bottom surface of the top pressing plate 7 gradually contacts the servo body 3. The first elastic sheet 11 at the top and the first elastic sheet 11 at the bottom cooperate to facilitate the two pressing plates 7 to cooperate to clamp the servo body 3, completing the limitation of the servo body 3 and facilitating the adaptation and placement of servo bodies 3 of different sizes between the two pressing plates 7.

[0042] When the servo body 3 is placed on the top surface of the bottom pressing plate 7, the chamfered surface 18 at the bottom of the rear end of the servo body 3 fits on the inclined surface 17 at the bottom, and the elastic member causes the bottom pressing block 16 to lift the rear part of the servo body 3.

[0043] When the upper slider 9 drives the top pressing plate 7 to move downward, the top pressing block 16 first contacts the chamfered surface 18 at the top of the rear end of the servo body 3. When the upper slider 9 continues to move downward, the two pressing plates 7 make the servo body 3 gradually tend to be horizontal. The rear part of the servo body 3 presses the bottom pressing block 16, and the reaction force of the rear part of the servo body 3 on the top pressing block 16 causes the top elastic member to contract. At this time, the inclined surface 17 of the pressing block 16 and the chamfered surface 18 have a dislocation movement. At this time, the elastic forces of the two elastic members are transmitted to the rear part of the servo body 3 through the dislocation movement, and the elastic forces of the two elastic members push the servo body 3 forward. Since convex blocks 19 are fixed on both the top surface and the bottom surface of the rear part of the servo body 3, the forward-moving servo body 3 drives the convex blocks 19 to move synchronously until the front side of the convex block 19 fits against the rear side of the pressing plate 7. The elastic force of the elastic member and the limitation of the convex block 19 cooperate to prevent the servo body 3 from swinging left and right during the test.

[0044] The pressure of the steering gear body 3 on the extrusion block 16 causes the extrusion block 16 to approach the arc plate 15. Since the extrusion block 16 uses the insertion rod 22 to limit the inner end of the rotating plate 20, the moving extrusion block 16 uses the insertion rod 22 to make the inner end of the rotating plate 20 approach the arc plate 15, and the rotating plate 20 is inclined. At this time, the rotating plate 20 rotates driven by the insertion rod 22, and the bottom end of the rotating plate 20 slides inside the arc groove 24 by means of the convex rod 23, and the distance between the two opposite convex rods 23 gradually expands. The two convex rods 23 moving away from each other cooperate to pull the second elastic sheet 21. At this time, the elastic force of the second elastic sheet 21 is applied to the extrusion block 16 through the two rotating plates 20 and the insertion rod 22. Under the action of the elastic force, the extrusion block 16 slides on the chamfer surface 18 by means of the inclined surface 17, and the two extrusion blocks 16 approach each other. The movement of the extrusion block 16 causes the steering gear body 3 to move forward. Through the limitation of the convex block 19, the stability of the steering gear body 3 during the test is ensured.

[0045] The steering gear body 3 to be tested is installed on the test board 2 by means of the clamping component. At this time, the rocker arm 4 is installed at the output end of the front side of the steering gear body 3. The pull bar is wound around the output end of the encoder 6, and the bottom end of the pull bar is connected to the weight 5. The steering gear body 3 is connected to the power supply device and the controller.

[0046] The controller is started. The controller controls the rocker arm 4 of the steering gear body 3 to rotate. The rotating rocker arm 4 pulls the weight 5 to move up and down by means of the pull bar. And the output end of the encoder 6 facilitates the change of the pulling force direction of the pull bar, so that the weight 5 can move in the vertical direction, avoiding the dispersion of the pulling force of the weight 5 on the rocker arm 4 caused by deviation. The swinging rocker arm 4 makes the output end of the encoder 6 rotate by means of the pull bar. The encoder 6 transmits the rotation data to the display. By using the number of rotating turns, the moving distance after the rotation of the rocker arm 4 can be known, and it can be judged whether it meets the detection standard, so as to realize the online test of whether the rotation angle of the rocker arm 4 of the steering gear body 3 is qualified. The test method is simple and effective.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it.

Claims

1. A general vertical servo loading test bench, comprising a tabletop (1) and a test board (2) vertically installed on the top of the tabletop (1), characterized in that: On the front side of the test board (2), a steering gear body (3) is placed. The output end on the front side of the steering gear body (3) is connected to a rocker arm (4). One end of the rocker arm (4) is connected to a weight (5) by a pull bar, and an encoder (6) is connected to the front side of the test board (2) by a cross bar. The pull bar is wound around the output end of the encoder (6). The steering gear body (3) is limited to the front side part of the test board (2) by a clamping component. The clamping component includes a pressing plate (7), an outer frame (8), an upper slider (9), a lower slider (10) and a first elastic sheet (11). Two outer frames (8) are fixed to the front side of the test board (2) in an up-and-down relative manner. The upper slider (9) is inside the top outer frame (8), and the lower slider (10) is inside the bottom outer frame (8). A first elastic sheet (11) is arranged inside the outer frame (8). The bottom end of the first elastic sheet (11) at the top fits against the top surface of the upper slider (9), and the top end of the first elastic sheet (11) at the bottom fits against the bottom surface of the lower slider (10). Pressing plates (7) are fixed to both the bottom surface of the upper slider (9) and the top surface of the lower slider (10). The elastic force of the first elastic sheet (11) enables the two pressing plates (7) to cooperate to clamp the steering gear body (3). The clamping component further includes an arc plate (15), a pressing block (16) and an elastic component for limiting the pressing block (16). The elastic component includes a rotating plate (20), a second elastic sheet (21) and a plug rod (22). Two rotating plates (20) cooperate with each other. The distance between the inner ends of the two rotating plates (20) is smaller than the distance between their outer ends. The two plug rods (22) correspond to the two rotating plates (20) one by one. The front end of the plug rod (22) is inserted into the inner end of the rotating plate (20), and the rear end of the plug rod (22) is connected to the pressing block (16). A convex rod (23) is fixed to the rear side surface of the outer end of the rotating plate (20). The two convex rods (23) are connected by a second elastic sheet (21). An activity groove corresponding to the elastic component is arranged at the front side part of the arc plate (15), and an arc groove (24) corresponding to the convex rod (23) is arranged on the rear side surface of the activity groove. The elastic component further includes an outer arc strip (25) and a rotating groove (26). The inner end of the outer arc strip (25) is connected to the outer end of the rotating plate (20). Rotating grooves (26) are arranged on both sides of the activity groove. The outer end of the outer arc strip (25) penetrates through the rotating groove (26).

2. The general vertical steering gear loading test bench according to claim 1, wherein: A vertically arranged screw rod (12) is spirally inserted into the top surface of the top outer frame (8), and the bottom end of the screw rod (12) corresponds to the top surface of the upper slider (9).

3. The general vertical steering gear loading test bench according to claim 2, wherein: Circular plates (13) are fixed to both side surfaces of the upper slider (9) and the lower slider (10) by connecting rods. The inner side surface of the circular plate (13) fits against the outer side surface of the outer frame (8). Vertical grooves corresponding to the connecting rods are arranged on the side surface of the outer frame (8), and limiting strips (14) are embedded inside the vertical grooves. The connecting rods are sleeved on the surface of the limiting strips (14).

4. The general vertical steering gear loading test bench according to claim 1, wherein: Arc-shaped plates (15) are fixed to the rear sides of both pressing plates (7), and through grooves corresponding to the arc-shaped plates (15) are provided on the surface of the test plate (2). The pressing plates (7) that move up and down drive the arc-shaped plates (15) to move up and down inside the through grooves. An elastic member is installed at the center of the arc-shaped plate (15), and the elastic member is connected with a pressing block (16). The two pressing blocks (16) are arranged oppositely, and inclined surfaces (17) are provided on the inner sides of the pressing blocks (16). Chamfered surfaces (18) are provided on the top and bottom of the rear side of the servo body (3). The two inclined surfaces (17) correspond to the two chamfered surfaces (18) one by one, and the inclined surfaces (17) are in contact with the chamfered surfaces (18).

5. The general vertical servo loading test bench according to claim 4, wherein: Protrusions (19) are fixed to the top surface and the bottom surface of the rear side of the servo body (3), and the front side surfaces of the protrusions (19) are in contact with the rear side surfaces of the pressing plates (7).

6. The general vertical servo loading test bench according to claim 1, wherein: The outer arc strip (25) is made of rubber material. When the rotating rotating plate (20) causes the outer arc strip (25) to move inside the rotating groove (26), the rotating groove (26) deforms the outer arc strip (25).

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