Electric servo performance test bench

Abstract

The utility model discloses an electric servo performance test bench, which comprises a support frame, a horizontal moving mechanism is arranged on the support frame, a vertical moving mechanism is arranged on the horizontal moving mechanism, and a transmission mechanism capable of enabling the vertical moving mechanism to move vertically is arranged on the vertical moving mechanism and the support frame. A rotating support is rotationally connected to the vertical moving mechanism, and an electric servo cylinder is rotationally connected to the rotating support. According to the utility model, the structure is simple, the space is saved, the stability and the bearing performance are obviously improved, the electric servo cylinder does not shift when a force value is applied through the electric servo cylinder in a locking state, and meanwhile, the electric servo cylinder can realize four-direction swing in the X direction and the Y direction, so that the variety and the range of performance tests are expanded.

Description

Technical Field

[0001] This utility model belongs to the field of testing equipment, specifically relating to an electric servo performance testing bench. Background Technology

[0002] The performance testing bench is primarily used for fatigue and durability testing of automotive seats and interior components. It plays a crucial role in existing seat performance testing, simulating cyclic stresses encountered in real-world use through sinusoidal fatigue testing, clarifying the seat's rigidity characteristics through rigidity measurements, and assessing performance changes over extended periods through durability testing. By meticulously analyzing and comprehensively evaluating the rich parameters obtained from these tests, we can clearly understand the fatigue performance and durability of seats and interior components under different operating conditions. This allows us to effectively identify potential problems and weaknesses, providing a solid basis for subsequent design improvements and optimizations of seats and interior components.

[0003] However, current performance testing benches have some shortcomings. First, their structure is relatively complex and occupies a large space, which may cause many inconveniences in practical applications. Furthermore, the uneven stress on the support frame leads to insufficient stability and load-bearing capacity. Simultaneously, existing electric cylinders move horizontally via linear bearings. After prolonged use, gaps gradually develop between the slider and the slide rail, causing wobbling between the frame and the slide rail. Even when locked, deviation still occurs when force is applied through the electric cylinder, affecting the accuracy and stability of the test. In addition, the electric cylinders in existing performance testing benches can only oscillate in the Y-axis, not the X-axis. This fails to meet the adjustment requirements for different positions needed in performance testing, severely limiting the types and scope of tests. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems by providing an electric servo performance test bench. This test bench has better stability and load-bearing capacity. When locked, it will not deviate when the force value is applied by the electric servo cylinder. At the same time, the electric servo cylinder in this application can realize four-way swing in the X and Y directions, which expands the types and scope of performance tests.

[0005] To achieve the above objectives, this utility model provides an electric servo performance test bench, including a support frame, a horizontal moving mechanism on the support frame, a vertical moving mechanism on the horizontal moving mechanism, a transmission mechanism on the support frame that enables the vertical moving mechanism to move vertically, a rotating bracket rotatably connected to the vertical moving mechanism, and an electric servo cylinder rotatably connected to the rotating bracket.

[0006] As a further optimization, the support frame is a gantry-type support frame.

[0007] As a further optimization, the horizontal moving mechanism includes a horizontal slide rail and two horizontal sliders. The horizontal moving mechanism is connected to the support frame via the horizontal slide rail. The longitudinal sides of the horizontal slide rail are equipped with limiting blocks to restrict the horizontal limit displacement of the horizontal sliders. The horizontal sliders are C-shaped sliders. The two horizontal sliders are slidably connected to the transverse sides of the horizontal slide rail. The horizontal sliders are equipped with a locking structure.

[0008] As a further optimization, the locking structure includes a locking plate, which is disposed between the horizontal slide rail and the bottom inner wall of the horizontal slider. The bottom side wall of the horizontal slider is provided with a positioning hole at the relative position of the locking plate. One end of the positioning hole on the horizontal slider is connected to a positioning pin, and the other end of the positioning pin passes through the positioning hole and is slidably connected to the locking plate. The bottom side wall of the horizontal slider is also provided with a threaded through hole, and a bolt passes through the threaded through hole and abuts against the locking plate.

[0009] As a further optimization, a spherical bearing is provided on the top side wall of the horizontal slider, and the horizontal slide rail has an arc-shaped slide rail at the position relative to the spherical bearing. The horizontal slider is slidably connected to the horizontal slide rail through the cooperation of the spherical bearing and the arc-shaped slide rail.

[0010] As a further optimization, the top of the horizontal slide rail is connected to multiple connecting plates by multiple bolt groups, and the horizontal slide rail is connected to the crossbeam of the support frame by the cooperation of the bolt groups and the connecting plates.

[0011] As a further optimization, the vertical moving mechanism includes a vertical slide rail bracket connected to the horizontal moving mechanism. A vertical sliding frame is slidably connected inside the vertical slide rail bracket. The bottom of opposite sides of the vertical sliding frame is rotatably connected to the bracket shafts on opposite sides of the rotating bracket through cooperation with X-axis clamping blocks. The other opposite sides of the rotating bracket are rotatably connected to the shafts on the electric servo cylinder through cooperation with Y-axis clamping blocks. A second locking structure is provided on the vertical sliding frame.

[0012] As a further optimization, the second locking structure includes a second locking plate, which is disposed between the outer wall of the vertical slide rail bracket and the outer wall of the vertical sliding frame. The outer wall of the vertical sliding frame has a second positioning hole at the relative position of the second locking plate. The second positioning hole on the vertical sliding frame is connected to one end of a second positioning pin, and the other end of the second positioning pin passes through the second positioning hole and is slidably connected to the second locking plate. The outer wall of the vertical sliding frame is also provided with a second threaded through hole, through which a bolt abuts against the second locking plate.

[0013] As a further optimization, the transmission mechanism includes an agitator mounted on a support frame, a first guide wheel located above the agitator, a second guide wheel located on a vertical moving mechanism, and a lifting ring. The lifting ring is connected to one end of a wire rope, and the other end passes through the second guide wheel and the first guide wheel in sequence before being connected to the agitator.

[0014] As a further optimization, the bottom of the support frame is provided with an installation platform, and the installation platform is provided with multiple installation slots.

[0015] Advantages and beneficial effects of this utility model

[0016] 1. This utility model adopts a gantry-type support frame. During the process of the electric servo cylinder applying force to the sample to be tested, the overall force of the support frame is more uniform, so the stability and load-bearing capacity are better, and the load-bearing capacity can reach up to 10000N. Compared with the support frame in the prior art, it has a significant improvement in load-bearing capacity and stability.

[0017] 2. This utility model has a ball bearing on the top side wall of the horizontal slider and an arc-shaped slide rail that matches the ball bearing at the position of the horizontal slide rail. This design makes the fit between the horizontal slider and the horizontal slide rail tighter. When the horizontal slider is locked, even if the electric servo cylinder applies a force, there will be no deviation.

[0018] 3. This utility model rotatably connects an electric servo cylinder to a rotating bracket. Through the rotation of the electric servo cylinder and the rotating bracket, the electric servo cylinder can swing in four directions along the X and Y axes. This innovative design allows the electric servo cylinder to flexibly adapt to various working conditions and needs, and can accurately meet the adjustment requirements for different positions during performance testing, greatly expanding the types and scope of performance tests. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the performance testing bench provided in this embodiment of the utility model;

[0021] Figure 2 This is provided by the embodiment of the present utility model. Figure 1 Enlarged view of point A in the image;

[0022] Figure 3This is a schematic diagram of the other side of the performance testing bench provided in this embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the horizontal moving mechanism provided in this embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of the horizontal slider and locking structure provided in an embodiment of the present invention;

[0025] Figure 6 This is another angle view of the horizontal slider and locking structure provided in this embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the vertical sliding frame and the X-axis clamping block provided in an embodiment of this utility model;

[0027] Figure 8 This is a schematic diagram of the rotating bracket and Y-axis clamping block provided in an embodiment of the present invention.

[0028] Reference numerals in the attached drawings: 1. Support frame; 2. Horizontal moving mechanism; 21. Horizontal slide rail; 211. Arc-shaped slide rail; 22. Horizontal slider; 23. Limiting block; 24. Locking structure; 241. Locking plate; 242. Positioning hole; 243. Threaded through hole; 25. Ball bearing; 26. Connecting column; 27. Connecting plate; 38. Vertical moving mechanism; 39. Vertical slide rail bracket; 30. Vertical sliding frame; 32. X-axis clamping block; 33. Y-axis clamping block; 34. Second locking structure; 35. Second locking block; 351. Second positioning hole; 352. Second threaded through hole; 353. Transmission mechanism; 40. Agitator wheel; 41. First guide wheel; 42. Second guide wheel; 43. Lifting ring; 44. Rotating bracket; 51. Bracket shaft; 6. Electric servo cylinder; 61. Shaft; 7. Mounting platform; 71. Mounting groove; and 8. Reinforcing tie rod. Detailed Implementation

[0029] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0030] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] like Figure 1 and Figure 3 As shown, an electric servo performance testing bench includes a support frame 1, which is a gantry-type support frame. When the electric servo cylinder 6 applies a force to the sample under test, the overall force on the support frame 1 is more uniform, thus improving the stability and load-bearing capacity of the testing bench. A horizontal moving mechanism 2 is provided on the crossbeam of the support frame 1, which can drive the electric servo cylinder 6 to move horizontally. A vertical moving mechanism 3 is provided at the bottom of the horizontal moving mechanism 2, which can drive the electric servo cylinder 6 to move vertically. A transmission mechanism 4 is provided on the vertical beam of the support frame 1 to enable the vertical moving mechanism 3 to move vertically. A rotating bracket 5 is rotatably connected to the vertical moving mechanism 3. The rotating bracket 5 can rotate left and right relative to the vertical moving mechanism 3 in the X direction. An electric servo cylinder 6 is rotatably connected to the rotating bracket 5. The electric servo cylinder 6 can rotate forward and backward relative to the rotating bracket 5 in the Y direction. Since this application can drive the electric servo cylinder 6 to move horizontally, vertically, and swing in four directions in the X and Y directions, the electric servo cylinder 6 can flexibly adapt to various working conditions and needs, and can accurately meet the adjustment requirements for different positions during performance testing, greatly expanding the types and scope of performance tests. The bottom of the support frame 1 is provided with an installation platform 7, and the installation platform 7 is provided with multiple installation slots 71. The sample to be tested is installed on the performance test bench through the installation slots 71.

[0032] like Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, the horizontal moving mechanism 2 includes a horizontal slide rail 21 and two horizontal sliders 22. Multiple connecting plates 27 are connected to the top of the horizontal slide rail 21 via multiple bolt groups 26. The horizontal slide rail 21 is connected to the crossbeam of the support frame 1 via the cooperation of the bolt groups 26 and the connecting plates 27. The left and right ends of the horizontal slide rail 21 have limiting blocks 23 that restrict the horizontal limit displacement of the horizontal sliders 22. The horizontal sliders 22 are C-shaped sliders. Multiple ball bearings 25 are provided on the inner top wall of the horizontal sliders 22. The horizontal slide rail 21 has an arc-shaped slide rail 211 at the position opposite to the ball bearings 25. The horizontal sliders 22 are slidably connected to the front and rear sides of the horizontal slide rail 21 via the cooperation of the ball bearings 25 and the arc-shaped slide rail 211. The horizontal sliders 22 have a locking structure 24. The locking structure 24 includes... The system includes a locking plate 241, which is disposed between the horizontal slide rail 21 and the bottom inner wall of the horizontal slider 22. A positioning hole 242 is provided on the bottom side wall of the horizontal slider 22 relative to the locking plate 241. The positioning hole on the horizontal slider 22 is interference-fitted with the bottom end of a positioning pin, and the top end of the positioning pin passes through the positioning hole 242 and is slidably connected to the locking plate 241. A threaded through hole 243 is also provided on the bottom side wall of the horizontal slider 22. After the bolt passes through the threaded through hole 243, it abuts against the lower surface of the locking plate 241. When the slider 22 needs to be locked by the locking structure 24, simply rotate the bolt upwards to cause the bolt to drive the locking plate 241 to clamp the horizontal slide rail 21 upwards. The positioning pin and the positioning hole serve a positioning function, preventing the locking plate 241 from moving left or right during the lifting and lowering process.

[0033] like Figure 2 and Figure 8As shown, the vertical moving mechanism 3 includes a vertical slide rail bracket 31 connected to the horizontal moving mechanism 2. A vertical sliding frame 32 is slidably connected inside the vertical slide rail bracket 31. The electric servo cylinder 6 moves up and down inside the vertical slide rail bracket 31 via the vertical sliding frame 32. The bottom of the front and rear sides of the vertical sliding frame 32 is rotatably connected to the support shafts 51 on the front and rear sides of the rotating bracket 5 through cooperation with the X-axis clamping block 33. The vertical sliding frame 32 and the X-axis clamping block 33 are connected by screws. When the screws are in the locked state, the rotating bracket 5 cannot rotate left or right relative to the vertical sliding frame 32 in the X-axis direction. The left and right opposite sides of the rotating bracket 5 are connected to the Y-axis clamping block 34. The rotating bracket 5 is rotatably connected to the rotating shaft 61 on the electric servo cylinder 6. The rotating bracket 5 and the Y-axis clamping block 34 are connected by screws. When the screws are locked, the electric servo cylinder 6 cannot swing back and forth relative to the rotating bracket 5 along the Y direction. In order to strengthen the strength of the vertical slide rail bracket 31, in this embodiment, reinforcing rods 8 are movably connected to the bottom of the left and right sides of the vertical slide rail bracket 31. When the electric servo cylinder 6 swings to the left or right along the X direction, in order to prevent the electric servo cylinder 6 from interfering with the reinforcing rod 8, the reinforcing rod 8 on the corresponding side can be removed from the bottom of the vertical slide rail bracket 31. The vertical sliding frame 32 is provided with a second locking structure 35, which is as follows: Figure 2 and Figure 7 As shown, the system includes a second locking plate 351, which is disposed between the outer wall of the vertical slide rail bracket 31 and the outer wall of the vertical sliding frame 32. The outer wall of the vertical sliding frame 32 has multiple second positioning holes 352 at the relative positions of the two locking plates 351. One end of the second positioning hole on the vertical sliding frame 32 is interference-fitted with a second positioning pin, and the other end of the second positioning pin passes through the second positioning hole 352 on the second locking plate 351 and is slidably connected to the second locking plate 351. The outer wall of the vertical sliding frame 32 is also provided with a second threaded through hole 353. After the bolt passes through the second threaded through hole 353, it contacts the surface of the second locking plate 351. When it is necessary to lock the vertical sliding frame 32 through the second locking structure 35, simply rotate the bolt inward to make the bolt drive the second locking plate 351 to clamp the vertical slide rail bracket 31 inward. The second positioning pin and the second positioning hole play a positioning role to prevent the second locking plate 351 from shifting when moving left and right.

[0034] like Figure 2As shown, the transmission mechanism 4 in this embodiment includes an agitator, a guide wheel, a lifting ring, and a steel wire rope. Alternatively, the transmission mechanism can be configured as a combination of a chain and a sprocket. The transmission mechanism 4 in this embodiment will be described in detail below. The transmission mechanism 4 includes an agitator 41 mounted on the support frame 1, a first guide wheel 42 located above the agitator 41, a second guide wheel 43 located below the top of the vertical slide rail bracket 31, and a lifting ring 44 located at the top of the vertical sliding frame 32. The lifting ring 44 is connected to one end of the steel wire rope, and the other end is connected to the agitator 41 via the second guide wheel 43 and the first guide wheel 42 in sequence. By shaking the agitator 41, the guide wheel can be rotated. The electric servo cylinder 6 can be driven to perform lifting and lowering movements by the traction of the steel wire.

[0035] The following description uses a seat rigidity test as an example:

[0036] A force sensor is externally connected to the lead screw end of the electric servo cylinder 6. A first displacement sensor is installed inside the cylinder body of the electric servo cylinder 6, and a second displacement sensor is installed on the sample to be tested. The first displacement sensor is used to control and monitor the position of the electric servo cylinder 6, and the second displacement sensor is used to measure the deformation of the sample to be tested. The electric servo cylinder 6, the first displacement sensor, the second displacement sensor, and the force sensor are connected to the control system. The control system includes a servo drive module, an analog input terminal, an analog output terminal, a data acquisition module, and a data storage module. The electric servo cylinder 6 is connected to the servo drive module in the control system. The servo drive module is connected to the analog input terminal, the analog output terminal, the data acquisition module, and the data storage module, respectively. The analog input terminal receives electrical signals from the force sensor and the first displacement sensor in real time. The analog output terminal can output corresponding force or displacement target values ​​based on the electrical signals received from the force sensor and the first displacement sensor from the analog input terminal, so that the electric servo cylinder 6 reaches the target position. The data acquisition module can acquire real-time parameter data from the force sensor, the first displacement sensor, and the second displacement sensor, and the data storage module stores the data acquired by the data acquisition module.

[0037] Before conducting the experiment, the electric servo cylinder 6 is moved and rotated relative to the test sample via the horizontal moving mechanism 2, the vertical moving mechanism 3, and the rotating support 5. During vertical movement, the horizontal slider 22 in the horizontal moving mechanism 2 is locked by the locking structure 24, and the second locking structure 35 in the vertical moving mechanism 3 is released. This allows the electric servo cylinder 6 to move vertically via the transmission mechanism 4. During horizontal movement, the second locking structure 35 in the vertical moving mechanism 3 is locked, and the horizontal slider 22 in the horizontal moving mechanism 2 is released by the locking structure 24. This allows the electric servo cylinder 6 to move horizontally. After the position is adjusted, the control... A set value is set in the control system. Then, the servo drive module in the control system sends a control signal to the electric servo cylinder 6. The force sensor will feed back the currently detected analog input force value to the servo drive module for judgment. If the detected force value is less than the set value, the servo drive module will send an analog output displacement signal to the electric servo cylinder 6. At this time, the lead screw continues to extend. As the distance to the sample under test decreases, the pressure will continue to increase. When the current force value detected by the force sensor is greater than or equal to the set value, the servo drive module will stop sending analog displacement signal output to the electric servo cylinder 6, and the lead screw on the electric servo cylinder 6 will stop extending.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the present utility model.

Claims

1. An electric servo performance testing bench, characterized in that: It includes a support frame (1), a horizontal moving mechanism (2) is provided on the support frame (1), a vertical moving mechanism (3) is provided on the horizontal moving mechanism (2), a transmission mechanism (4) is provided on the vertical moving mechanism (3) and the support frame (1) to enable the vertical moving mechanism (3) to move vertically, a rotating bracket (5) is rotatably connected to the vertical moving mechanism (3), and an electric servo cylinder (6) is rotatably connected to the rotating bracket (5).

2. The electric servo performance testing bench according to claim 1, characterized in that: The support frame (1) is a gantry-type support frame.

3. The electric servo performance testing bench according to claim 1, characterized in that: The horizontal moving mechanism (2) includes a horizontal slide rail (21) and two horizontal sliders (22). The horizontal moving mechanism (2) is connected to the support frame (1) through the horizontal slide rail (21). The horizontal slide rail (21) has limit blocks (23) on both longitudinal sides to limit the horizontal limit displacement of the horizontal sliders (22). The horizontal sliders (22) are C-shaped sliders. The two horizontal sliders (22) are slidably connected on both transverse sides of the horizontal slide rail (21). The horizontal sliders (22) have a locking structure (24).

4. The electric servo performance testing bench according to claim 3, characterized in that: The locking structure (24) includes a locking plate (241), which is disposed between the horizontal slide rail (21) and the bottom inner wall of the horizontal slider (22). The bottom side wall of the horizontal slider (22) is provided with a positioning hole (242) at the relative position of the locking plate (241). The positioning hole on the horizontal slider (22) is connected to one end of a positioning pin. The other end of the positioning pin passes through the positioning hole (242) and is slidably connected to the locking plate (241). The bottom side wall of the horizontal slider (22) is also provided with a threaded through hole (243). After the bolt passes through the threaded through hole (243), it abuts against the locking plate (241).

5. The electric servo performance testing bench according to claim 3, characterized in that: The top sidewall of the horizontal slider (22) is provided with a ball bearing (25), and the horizontal slide rail (21) has an arc-shaped slide rail (211) at the position relative to the ball bearing (25). The horizontal slider (22) is slidably connected to the horizontal slide rail (21) through the ball bearing (25) and the arc-shaped slide rail (211).

6. The electric servo performance testing bench according to claim 3, characterized in that: The top of the horizontal slide rail (21) is connected to multiple connecting plates (27) by multiple bolt groups (26), and the horizontal slide rail (21) is connected to the crossbeam of the support frame (1) by the cooperation of the bolt groups (26) and the connecting plates (27).

7. The electric servo performance testing bench according to claim 1, characterized in that: The vertical moving mechanism (3) includes a vertical slide rail bracket (31) connected to the horizontal moving mechanism (2). A vertical sliding frame (32) is slidably connected inside the vertical slide rail bracket (31). The bottom of the vertical sliding frame (32) on both sides is rotatably connected to the bracket shaft (51) on both sides of the rotating bracket (5) through cooperation with the X-axis clamping block (33). The other two sides of the rotating bracket (5) are rotatably connected to the shaft (61) on the electric servo cylinder (6) through cooperation with the Y-axis clamping block (34). The vertical sliding frame (32) is provided with a second locking structure (35).

8. The electric servo performance testing bench according to claim 7, characterized in that: The second locking structure (35) includes a second locking plate (351), which is disposed between the vertical slide rail bracket (31) and the outer wall of the vertical sliding frame (32). The outer wall of the vertical sliding frame (32) has a second positioning hole (352) at the relative position of the second locking plate (351). The second positioning hole on the vertical sliding frame (32) is connected to one end of the second positioning pin. The other end of the second positioning pin passes through the second positioning hole (352) and is slidably connected to the second locking plate (351). The outer wall of the vertical sliding frame (32) is also provided with a second threaded through hole (353). After the bolt passes through the second threaded through hole (353), it abuts against the second locking plate (351).

9. The electric servo performance testing bench according to claim 1, characterized in that: The transmission mechanism (4) includes an agitator (41) mounted on the support frame (1), a first guide wheel (42) located above the agitator (41), a second guide wheel (43) located on the vertical moving mechanism (3), and a lifting ring (44). The lifting ring (44) is connected to one end of a wire rope, and the other end is connected to the agitator (41) via the second guide wheel (43) and the first guide wheel (42) in sequence.

10. The electric servo performance testing bench according to claim 1, characterized in that: The support frame (1) has an installation platform (7) at its bottom, and the installation platform (7) has multiple installation slots (71).

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