Damper test bench

Abstract

The utility model relates to the technical field of test stands, in particular to a damper test stand, which comprises a mounting rack, a moving plate arranged in the mounting rack, pin heads arranged on the left and right sides between the right side of the moving plate and the mounting rack, a mounting box I connected to the left end of the mounting rack, and a driving assembly arranged between the mounting box I and a screw rod. The front end and the rear end of the interior of the installation frame are both rotationally connected with lead screws, the movable plate is in threaded connection with the exteriors of the two lead screws, the right face of the movable plate is provided with a force sensor, the right side of the installation frame is provided with a valve-controlled hydraulic cylinder, and the two pin heads are installed at the inner ends of the force sensor and the valve-controlled hydraulic cylinder respectively and are in a U shape, and through holes are formed in the front sides and the rear sides of the pin heads. A limiting rod capable of moving front and back is arranged in the through hole, a moving assembly is arranged between the limiting rod and the pin head, and a distance sensor is embedded in the outer face of the inner wall of the pin head. According to the utility model, the damper is automatically positioned and installed, and the positioning test of the damper is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of test benches and discloses a damper test bench. Background Art

[0002] The damper is a vibration reduction component widely used in power pipelines. After the damper is produced, the performance of the damper needs to be tested on a damper test bench, so as to lay the foundation for further improving the performance of the shock absorbing damper. A valve-controlled hydraulic cylinder and a force sensor are provided on the damper test bench. The inner end of the valve-controlled hydraulic cylinder and the force sensor are provided with positioning components such as pin heads for positioning the two ends of the damper. When the damper test bench is working, the valve-controlled hydraulic cylinder usually applies an exciting force to one end of the damper, and the force sensor at the other end of the damper measures the force of the damper, and the performance of the damper is judged according to the test data;

[0003] When testing the damper, the existing damper test bench usually positions the damper by passing the pin shaft through the holes at both ends of the damper and the through hole on the pin head on the same side. When inserting and removing the pin shaft, it is usually a manual operation. The user needs to manually adjust the pin head to the appropriate position and then insert the pin shaft to position it. This is inefficient and the operation is more troublesome. Utility Model Content

[0004] The purpose of the utility model is to provide a damper test bench for the above-mentioned existing problems and shortcomings, which can automatically position and install the damper and facilitate the positioning test of the damper.

[0005] A damper test bench comprises a mounting frame, a movable plate is arranged inside the mounting frame, and pin heads are arranged on the left and right sides between the right side of the movable plate and the mounting frame;

[0006] The left end of the mounting frame is connected to a mounting box 1, a driving assembly is provided between the mounting box 1 and the screw rod, the front and rear ends of the mounting frame are both rotatably connected to the screw rods, and the movable plate is threadedly connected to the outside of the two screw rods;

[0007] A force sensor is installed on the right side of the movable plate, and a valve-controlled hydraulic cylinder is installed on the right side of the mounting frame. The two pin heads are respectively installed on the force sensor and the inner end of the valve-controlled hydraulic cylinder. The pin head is U-shaped, and through holes are opened on the front and back sides of the pin head. A limit rod that can move forward and backward is provided inside the through hole, and a moving component is provided between the limit rod and the pin head. A distance sensor is embedded and installed on the outer side of the inner wall of the pin head.

[0008] Preferably, the driving assembly includes a motor, a sprocket and a chain, the motor is installed on the left side of the installation box, the left end of the screw rod passes through the installation frame and is inserted into the installation box, and the left end of the screw rod is rotatably connected to the left side of the inner wall of the installation box.

[0009] Preferably, the left end of the screw rod on the rear side passes through the installation box and is connected to the power output end of the motor, two sprockets are provided and are respectively connected to the outside of the two screw rods, the chain is installed on the outside of the two sprockets, and the sprockets and chains are both located inside the installation box.

[0010] Preferably, the moving assembly includes a second mounting box and an electric push rod, and the second mounting box is provided with four and respectively connected to the front and rear sides of the two pin heads.

[0011] Preferably, four electric push rods are provided and are respectively installed on the outer side of the second inner wall of the four installation boxes, and the power output end of the electric push rod is connected to the adjacent limit rod.

[0012] Preferably, a PLC controller, button one and button two are installed on the right side of the mounting frame, and the motor, button one, button two, distance sensor and electric push rod are all connected to the PLC controller signal.

[0013] Beneficial effects:

[0014] Insert the right end of the damper into the pin head on the right side. When the distance sensor on the right side senses that the right end of the damper has reached the installation distance, the limit rods at the front and rear ends of the right side pass through the similar through holes and are inserted into the hole at the right end of the damper, thereby achieving the effect of limiting the right end of the damper. The distance sensor on the left side senses that the distance between the left end of the damper and it exceeds the installation distance. The motor rotates forward to drive the moving plate to move to the right. When the moving plate moves to the left side and the distance sensor senses that the left end of the damper has reached the installation distance, the limit rods at the front and rear ends of the left side pass through the similar through holes and are inserted into the hole at the left end of the damper, thereby achieving the effect of limiting the left end of the damper. At this time, the left and right ends of the damper can be automatically limited. The damper test bench can be suitable for testing dampers of different sizes and can facilitate the positioning test of the damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall main cross-sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the overall top view cross-sectional structure of the utility model.

[0018] Markings in the figure: mounting frame 1, screw rod 2, moving plate 3, mounting box 1 4, motor 5, force sensor 6, pin head 7, through hole 8, limit rod 9, mounting box 2 10, valve-controlled hydraulic cylinder 11, PLC controller 12, button 1 13, button 2 14, distance sensor 15, sprocket 16, chain 17, electric push rod 18. DETAILED DESCRIPTION

[0019] like Figures 1 to 3 As shown, the present application is a damper test bench, including a mounting frame 1, a movable plate 3 is provided inside the mounting frame 1, pin heads 7 are provided on the left and right sides between the right side of the movable plate 3 and the mounting frame 1, a mounting box 1 4 is connected to the left end of the mounting frame 1, a driving assembly is provided between the mounting box 1 4 and the screw rod 2, the screw rod 2 is rotatably connected to the front and rear ends of the mounting frame 1, and the movable plate 3 is threadedly connected to the outside of the two screw rods 2;

[0020] A force sensor 6 is installed on the right side of the movable plate 3, a valve-controlled hydraulic cylinder 11 is installed on the right side of the mounting frame 1, and two pin heads 7 are respectively installed on the force sensor 6 and the inner end of the valve-controlled hydraulic cylinder 11, and the pin head 7 is U-shaped, and a through hole 8 is opened on the front and rear sides of the pin head 7, and a limit rod 9 that can move forward and backward is arranged inside the through hole 8, and a moving component is arranged between the limit rod 9 and the pin head 7, and a distance sensor 15 is embedded and installed on the outer side of the inner wall of the pin head 7;

[0021] The driving assembly includes a motor 5, a sprocket 16 and a chain 17. The motor 5 is installed on the left side of the installation box 4. The left end of the screw rod 2 passes through the installation frame 1 and is inserted into the installation box 4. The left end of the screw rod 2 is rotatably connected to the left side of the inner wall of the installation box 4. The left end of the screw rod 2 on the rear side passes through the installation box 4 and is connected to the power output end of the motor 5. Two sprockets 16 are provided and are respectively connected to the outside of the two screw rods 2. The chain 17 is installed on the outside of the two sprockets 16. The sprockets 16 and the chain 17 are both located inside the installation box 4.

[0022] When the damper test bench is in use, the motor 5 is connected to an external power supply, the motor 5 drives the rear screw rod 2 to rotate, the rear sprocket 16 can rotate along with the rear screw rod 2, the rear sprocket 16 can drive the front sprocket 16 to rotate through the chain 17, the front screw rod 2 rotates along with the front sprocket 16, so the motor 5 can drive the front and rear screw rods 2 to rotate together, at this time the moving plate 3 threadedly connected to the outside of the two screw rods 2 can move left and right;

[0023] The moving assembly includes a second installation box 10 and an electric push rod 18. The second installation box 10 is provided with four and is respectively connected to the front and rear sides of the two pin heads 7. The electric push rod 18 is provided with four and is respectively installed on the outer side of the inner wall of the four second installation boxes 10. The power output end of the electric push rod 18 is connected to the adjacent limit rod 9.

[0024] A PLC controller 12, a button 13 and a button 2 14 are installed on the right side of the mounting frame 1, and the motor 5, the button 1 13, the button 2 14, the distance sensor 15 and the electric push rod 18 are all connected to the PLC controller 12 by signal;

[0025] An installation distance is set inside the PLC controller 12. The installation distance is the distance between the damper and the through hole 8 on the same side sensed by the distance sensor 15 on the same side when the left and right ends of the damper are inserted into the pin head 7 on the same side and the holes at the left and right ends of the damper correspond front to back. After taking out the damper, the user inserts the right end of the damper into the pin head 7 on the right side. When the distance sensor 15 on the right side senses that the right end of the damper reaches the installation distance, the distance sensor 15 on the right side can transmit the signal to the PLC controller 12, and the PLC controller 12 can control the electric push rod 18 on the right side to drive the limit rod 9 at the front and rear ends of the right side to move inward. At this time, the limit rod 9 can penetrate the adjacent through hole 8 and be inserted into the hole on the right end of the damper, thereby achieving the effect of limiting the right end of the damper.

[0026] When the electric push rod 18 on the right side is working, the distance sensor 15 on the left side senses that the distance between the left end of the damper and it exceeds the installation distance, and the distance sensor 15 on the left side can transmit the signal to the PLC controller 12, and the PLC controller 12 controls the motor 5 to rotate forward to drive the moving plate 3 to move to the right. When the moving plate 3 moves to the distance sensor 15 on the left side and senses that the left end of the damper reaches the installation distance, the distance sensor 15 transmits the signal to the PLC controller 12, and the PLC controller 12 can control the electric push rod 18 on the left side to drive the limit rods 9 at the front and rear ends of the left side to move inward. At this time, the limit rod 9 can penetrate the adjacent through hole 8 and be inserted into the hole at the left end of the damper, so as to achieve the effect of limiting the left end of the damper. At this time, the left and right ends of the damper can be automatically limited, and the valve-controlled hydraulic cylinder 11 performs various tests on the damper in the pulling and pressing directions according to the test requirements;

[0027] After the test is completed, press button 13, button 13 transmits a signal to the PLC controller 12, the PLC controller 12 controls the electric push rod 18 to drive the limit rods 9 at the front and rear ends to move outward, and the user can remove the damper at this time, press button 2 14, button 2 14 transmits a signal to the PLC controller 12, the PLC controller 12 controls the motor 5 to reverse and drive the movable plate 3 to move to the left, so as to facilitate the limiting of the damper with a longer length. The damper test bench can be suitable for the test of dampers of different sizes, and can also facilitate the positioning test of the damper.

Claims

1. A damper test bench, comprising a mounting frame (1), wherein a movable plate (3) is arranged inside the mounting frame (1), and pin heads (7) are arranged on the left and right sides between the right side of the movable plate (3) and the mounting frame (1), characterized in that: The left end of the mounting frame (1) is connected to a mounting box (4), a driving assembly is provided between the mounting box (4) and the screw rod (2), the front and rear ends of the mounting frame (1) are both rotatably connected to the screw rod (2), and the movable plate (3) is threadedly connected to the outside of the two screw rods (2); A force sensor (6) is installed on the right side of the movable plate (3), a valve-controlled hydraulic cylinder (11) is installed on the right side of the mounting frame (1), and two pin heads (7) are respectively installed on the inner end of the force sensor (6) and the valve-controlled hydraulic cylinder (11), the pin head (7) is U-shaped, and a through hole (8) is opened on the front and rear sides of the pin head (7), and a limit rod (9) that can move forward and backward is provided inside the through hole (8), and a moving component is provided between the limit rod (9) and the pin head (7), and a distance sensor (15) is embedded and installed on the outer side of the inner wall of the pin head (7).

2. A damper test bench according to claim 1, characterized in that: The driving assembly comprises a motor (5), a sprocket (16) and a chain (17); the motor (5) is installed on the left side of the installation box (4); the left end of the screw rod (2) passes through the installation frame (1) and is inserted into the installation box (4); the left end of the screw rod (2) is rotatably connected to the left side of the inner wall of the installation box (4).

3. A damper test bench according to claim 2, characterized in that: The left end of the screw rod (2) on the rear side passes through the installation box (4) and is connected to the power output end of the motor (5). Two sprocket wheels (16) are provided and are respectively connected to the outside of the two screw rods (2). The chain (17) is installed on the outside of the two sprocket wheels (16). The sprocket wheels (16) and the chain (17) are both located inside the installation box (4).

4. A damper test bench according to claim 3, characterized in that: The moving assembly comprises a second installation box (10) and an electric push rod (18). The second installation box (10) is provided with four and is respectively connected to the front and rear sides of the two pin heads (7).

5. A damper test bench according to claim 4, characterized in that: The electric push rods (18) are provided with four and are respectively installed on the outer side of the inner wall of the four installation boxes (10). The power output end of the electric push rod (18) is connected to the adjacent limit rod (9).

6. A damper test bench according to claim 5, characterized in that: A PLC controller (12), a button one (13) and a button two (14) are installed on the right side of the mounting frame (1); the motor (5), the button one (13), the button two (14), the distance sensor (15) and the electric push rod (18) are all connected to the PLC controller (12) by signals.

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