CN210347036U

CN210347036U - Spring tester

Info

Publication number: CN210347036U
Application number: CN201921770296.XU
Authority: CN
Inventors: 周伟林; 郭勇淼
Original assignee: Zhuji Xunjie Clutch Co ltd
Current assignee: Zhuji Xunjie Clutch Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-04-17
Anticipated expiration: 2029-10-21

Abstract

The utility model relates to the field of spring testing devices, and discloses a spring tester, which comprises a frame, a driving mechanism, a test board and a pressure sensor; the rack is placed on the ground; the test board is connected with the rack in a vertical sliding mode, and the driving mechanism is arranged on the rack and used for driving the test board to move; the pressure sensor is arranged on the frame and is positioned above the test bench. Use the utility model discloses the time, place the stopper that awaits measuring on the testboard, utilize actuating mechanism drive testboard motion to under the condition that testboard and frame slided relatively, the testboard can upwards slide by the frame relatively, and the testboard stops sliding when friction disc in the stopper and armature conflict, and pressure sensor's registration is the elasticity of spring this moment, judges whether the spring in the stopper that awaits measuring meets the requirements according to elasticity.

Description

Spring tester

Technical Field

The utility model belongs to spring testing arrangement field, in particular to spring tester.

Background

The brake is a component for cutting off and transmitting power between the engine and the transmission system, and has the function of engaging or disengaging power transmission.

The power-off brake comprises a clamping plate, a friction plate, an armature, a spring, a magnetic yoke and a coil, wherein the spring is in a compressed state. When the brake is electrified, the magnetic yoke generates a magnetic field under the action of current, and the friction plate and the armature move in the magnetic field against the action force of the spring to separate from the clamping plate; when the brake is powered off, the spring pushes the armature and the friction plate to clamp the friction plate between the clamping plate and the armature, so that braking is realized.

If the acting force of the spring is too large, the friction plate and the armature cannot be separated by the magnetic field force generated after the coil is electrified, so that the failure state cannot be reached, and the brake loses the breaking action; if the acting force of the spring is too small, the friction plate and the armature cannot be in good contact with the clamping plate when the coil is powered off, and the brake loses the braking effect. Therefore, the elastic coefficient of the spring is crucial to the normal use of the brake, that is, when the spring used in the brake is produced, a spring tester is required to detect whether the elastic force of the spring meets the requirement.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a spring tester can utilize actuating mechanism to drive the stopper on the testboard and rise the space distance between armature and the yoke to utilize pressure sensor to record the effort that produces behind this distance of spring deformation.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a spring tester comprises a frame, a driving mechanism, a test board and a pressure sensor; the rack is placed on the ground; the test board is connected with the rack in a vertical sliding mode, and the driving mechanism is arranged on the rack and used for driving the test board to move; the pressure sensor is arranged on the frame and is positioned above the test bench.

By adopting the technical scheme, the brake to be tested is placed on the test board, the drive mechanism is utilized to drive the test board to move, the test board can slide upwards relative to the rack under the condition that the test board and the rack slide relatively, the test board stops sliding when a friction plate in the brake is in conflict with an armature, the indication number of the pressure sensor is the elastic force of the spring, and whether the spring in the brake to be tested meets the requirement or not is judged according to the elastic force.

Further setting the following steps: the driving mechanism comprises a fixed seat, a ball screw and a ball nut; the fixed seat is fixedly connected with the rack, and the ball screw is vertically arranged and is rotationally connected to the fixed seat; the ball nut is in threaded connection with the ball screw, and the side surface of the ball nut is fixedly connected with the driving slide rod; a driving sliding chute in the vertical direction is formed in the rack; the two ends of the driving sliding rod are provided with protruding blocks, and the length of the driving sliding rod is larger than that of the driving sliding chute.

Through adopting above-mentioned technical scheme, ball rotates around vertical direction, and ball nut is connected through sliding with the frame, with ball screw threaded connection, can drive ball nut when ball rotates and move in vertical direction and can not take place to rotate, and the drive slide bar on the ball nut is provided with the lug, can prevent that ball nut from moving when too much and frame break away from.

Further setting the following steps: the driving mechanism comprises a worm wheel, a worm and a servo motor; the worm wheel and the worm are arranged on the rack and located below the fixed seat, the worm wheel is meshed with the worm, one end of the worm is fixedly connected with an output shaft of the servo motor, and a rotating shaft of the worm wheel is fixedly connected with the ball screw.

Through adopting above-mentioned technical scheme, servo motor drive worm rotates, and the worm drives the worm wheel through the meshing with the worm wheel and rotates to the axis of rotation through the worm wheel drives ball and rotates, and this kind of drive simple structure, drive ratio is stable, and can change drive ratio through the change of worm gear.

Further setting the following steps: the test board is fixedly connected with the ball nut, and three clamping sliding grooves extending along the radial direction of the test board are formed in the test board; the clamping chutes are uniformly distributed along the circumferential direction of the axis of the surface of the test board, a clamping plate is fixedly connected to one side close to the edge of the test board, the clamping plate is in threaded connection with a clamping bolt, and the bottom of the clamping bolt is rotatably connected with a clamping slide block; the clamping slide block is fixedly connected with a rubber sheet close to one side of the center of the test board, and protrudes out of the upper surface of the test board.

Through adopting above-mentioned technical scheme, when needing the test, rotate chucking bolt and drive the chucking slider and remove to the direction of keeping away from the testboard center, after the stopper that awaits measuring is put, rotate the chucking bolt once more and slide to being close to the stopper direction that awaits measuring, conflict to chucking slider and stopper, and three evenly distributed's slider on the testboard can have fine fixed effect, and the rubber piece on the chucking slider can reduce the friction damage to the stopper that awaits measuring. Through the slip of chucking slider on the chucking spout, can realize carrying out better fixed so that the test to not unidimensional stopper.

Further setting the following steps: the frame is provided with a locking chute; the locking sliding chute is connected with two locking sliding blocks in a sliding manner; the locking sliding blocks are respectively and fixedly connected with connecting plates; four pressure sensors are arranged, and every two pressure sensors are fixedly connected with the connecting plate; and a locking part is arranged between the locking sliding block and the locking sliding groove.

Through adopting above-mentioned technical scheme, according to the difference of the stopper size that awaits measuring, open the retaining member, two connecting plates of slip drive pressure sensor remove, make pressure sensor can distribute uniformly on the stopper that awaits measuring, after adjusting pressure sensor position, lock the retaining member for pressure sensor's test point is more even distributes in the stopper surface, can improve the measuring degree of accuracy to spring force with this.

Further setting the following steps: the retaining member comprises a locking bolt, the locking bolt is in threaded connection with the locking sliding block, and the bottom of the locking bolt is in contact with the bottom of the locking sliding groove.

Through adopting above-mentioned technical scheme, when the distance between pressure sensor needs to be adjusted, rotate the bolt and make bolt bottom and locking spout tank bottom separation, remove the connecting plate, rotate the bolt again after adjusting the distance and make bolt bottom and locking spout tank bottom contradict, realize locking, this structure simple manufacture and convenient operation.

Further setting the following steps: the frame is fixedly connected with a distance sensor, and the distance sensor and the bottom end of the pressure sensor are located on the same horizontal plane.

By adopting the technical scheme, the distance sensor automatically detects the distance between the upper surface of the brake to be tested on the test board and the pressure sensor, the distance required by the test board to slide can be determined according to the sizes of the friction plate and the armature in the brake to be tested, and meanwhile, the distance of the test board which has risen can be detected in real time, so that the test board is convenient to use.

Further setting the following steps: the bottom of the rack is fixedly connected with a plurality of connecting rods; the connecting rod is rotatably connected with a roller.

Through adopting above-mentioned technical scheme, be convenient for to the removal of spring tester, it is more convenient to use.

Further setting the following steps: the connecting rod is in threaded connection with a brake bolt; the bottom of the brake bolt is fixedly connected with a brake pad; a brake disc is fixedly connected to one side of the roller wheel, which is close to the connecting rod; the brake block is abutted against the brake disc.

Through adopting above-mentioned technical scheme, confirm the position of laying of spring tester after, rotate the brake block of brake bolt to bolt bottom and contradict with the brake disc, restriction gyro wheel rotation.

To sum up, the utility model discloses following beneficial effect has:

1. the brake to be tested is placed on the test board, the drive mechanism is used for driving the test board to move, the test board can slide upwards relative to the rack under the condition that the test board and the rack slide relatively, the test board stops sliding when a friction plate in the brake is abutted against an armature, the indication number of the pressure sensor is the elastic force of the spring, and whether the spring in the brake to be tested meets the requirement or not is judged according to the elastic force;

2. the testing of the brakes with different sizes can be realized by the sliding of the sliding block on the test board, and the distance between the pressure sensors can be adjusted, so that the test points of the pressure sensors are more uniformly distributed on the surface of the brake, and the accuracy of the measurement of the elastic force of the spring can be improved;

3. the distance sensor on the frame can detect the distance between the brake to be tested and the pressure sensor, so that the distance of the test board needing to move upwards can be calculated conveniently;

4. the spring tester can move, makes things convenient for the use of spring tester, and the spring tester removes the back, and the accessible rotates the brake block of brake bolt to bolt bottom and contradicts with the brake disc and realize the fixed to the spring tester, prevents to take place to remove in the use.

Drawings

FIG. 1 is a schematic structural diagram of a spring tester in this embodiment;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is an exploded view of the test stand according to the present embodiment;

FIG. 4 is an exploded view of a pressure sensor glide.

Reference numerals: 1. a frame; 11. locking the sliding chute; 12. locking the sliding block; 13. a locking member; 14. a connecting plate; 15. a connecting rod; 16. a brake bolt; 17. a roller; 18. a brake pad; 19. a brake disc; 2. a drive mechanism; 21. a fixed seat; 22. a ball screw; 23. a ball nut; 24. driving the slide bar; 25. a bump; 26. a drive chute; 27. a worm gear; 28. a worm; 29. a servo motor; 3. a test bench; 31. clamping the chute; 32. a chucking plate; 33. clamping the bolt; 34. clamping the sliding block; 35. a rubber sheet; 4. a pressure sensor; 5. a distance sensor.

Detailed Description

A spring tester is shown in figure 1 and comprises a frame 1, a driving mechanism 2, a test bench 3 and a pressure sensor 4.

As shown in fig. 1 and 2, the frame 1 is placed on the ground, four connecting rods 15 are fixedly connected to the bottom of the frame 1, brake bolts 16 are connected to the side faces of the connecting rods 15 through threads, brake pads 18 are fixedly connected to the bottoms of the brake bolts 16, rollers 17 are rotatably connected to the end portions of the connecting rods 15, brake discs 19 are fixedly connected to one sides, close to the connecting rods 15, of the rollers 17, and the brake pads 18 abut against the brake discs 19.

As shown in fig. 1, the drive mechanism 2 includes a servo motor 29, a worm 28, a worm wheel 27, a fixing base 21, a ball screw 22, and a ball nut 23. The servo motor 29 is arranged on the frame 1, the worm 28 is transversely placed on the frame 1, and one end of the worm 28 is fixedly connected with an output shaft of the servo motor 29. The worm wheel 27 is horizontally arranged on the machine frame 1 and is meshed with the worm 28, the worm 28 is driven by the servo motor 29 to rotate around the axial direction of the worm 28, and the worm 28 drives the worm wheel 27 to rotate around the direction vertical to the length direction of the worm 28.

As shown in fig. 1 and 3, the fixing seat 21 is disposed above the worm 28 and fixedly connected to the frame 1, the ball screw 22 is vertically disposed and rotatably connected to the fixing seat 21, and the bottom end of the ball screw penetrates the fixing seat 21 downward and is fixedly connected to a rotating shaft of the worm wheel 27, the ball nut 23 is in threaded connection with the ball screw 22, the side surface of the ball screw 22 is fixedly connected to the driving slide bar 24 in the vertical direction, the two ends of the driving slide bar 24 are provided with the protruding blocks 25, the frame 1 is fixedly connected to the driving slide groove 26 in the vertical direction, and the length of the driving slide groove 26 is smaller than that of the driving. The ball nut 23 is fixedly connected with the test bench 3.

The rotation of the worm wheel 27 drives the ball screw 22 to rotate around the axial direction of the ball screw 22, and the ball nut 23 slides in the vertical direction along the driving chute 26 under the rotation of the ball screw 22, so as to drive the test bench 3 to move up and down in the vertical direction.

Set up three chucking spout 31 along the radial extension of testboard 3 on the testboard 3, three chucking spout 31 is along the axis circumference evenly distributed of testboard 3, be close to marginal one side fixedly connected with chucking plate 32 at chucking spout 31, chucking plate 32 threaded connection has chucking bolt 33, chucking bolt 33 bottom is rotated and is connected with chucking slider 34, chucking slider 34 is close to 3 central one side fixedly connected with rubber piece 35 of testboard, and 3 upper surfaces of testboard of chucking slider 34 salient testboard.

As shown in fig. 1 and 4, a locking chute 11 is formed in the top of the frame 1 along the length direction of the worm 28, the locking chute 11 is connected with two locking sliders 12 in a sliding manner, the two locking sliders 12 are both connected with a locking bolt in a threaded manner, and the bottom of the locking bolt is in low contact with the locking chute 11. The surfaces of the two locking sliders 12 are fixedly connected with connecting plates 14 respectively, four pressure sensors 4 are arranged, every two of the four pressure sensors are fixedly connected with the connecting plates 14 respectively, and the pressure sensors 4 are located above the test board 3.

As shown in fig. 1, a distance sensor 5 is fixedly connected to the frame 1, and the bottom ends of the distance sensor 5 and the pressure sensor 4 are located on the same horizontal plane.

The use principle is as follows: before the test, the brake bolt 16 is rotated to separate the brake pad 18 from the brake disc 19, the spring tester is moved to a position convenient to use, and then the brake bolt 16 is rotated again until the brake pad 18 is abutted against the brake disc 19, and the spring tester is fixed.

And the clamping bolt 33 is rotated to enable the clamping slide block 34 to slide towards the edge direction of the test bench 3, so that the brake to be tested can be placed at the center of the test bench 3, after the clamping bolt 33 is placed, the clamping slide block 34 is rotated again to slide towards the center direction of the test bench 3, the rubber sheet 35 on the clamping slide block 34 is enabled to be abutted against the surface of the brake to be tested, and the brake to be tested is fixed.

After the brake to be tested is fixed, the locking bolt is rotated to the bottom of the locking bolt to be separated from the bottom of the locking chute 11, the pressure sensors 4 are uniformly distributed above the brake to be tested through the sliding connection plate 14, the locking bolt is screwed down, the distance from the upper surface of the brake to be tested, which is detected by the distance sensor 5, to the pressure sensors 4 and the distance from the surface of the test bench 3 to the pressure sensors 4 are input into the host, and the distance, which needs to slide, of the test bench 3 when the magnet yoke and the armature are in contact is calculated according to the thickness data of the magnet yoke and the armature.

The worm 28 is driven to rotate through the servo motor 29, the worm 28 drives the worm wheel 27 to rotate so as to realize the rotation of the ball screw 22, the test bench 3 is pushed to slide upwards, the test bench 3 is controlled to stop sliding through the controller when the test bench 3 slides to a required distance, the indication number of the pressure sensor 4 is the spring of the spring in the controller to be tested, and the test on the elastic force of the spring is realized.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A spring tester is characterized by comprising a rack (1), a driving mechanism (2), a test bench (3) and a pressure sensor (4); the frame (1) is placed on the ground; the test board (3) is connected with the rack (1) in a vertical sliding mode, and the driving mechanism (2) is arranged on the rack (1) and used for driving the test board (3) to move; the pressure sensor (4) is arranged on the rack (1) and is positioned above the test bench (3).

2. The spring tester of claim 1, wherein: the driving mechanism (2) comprises a fixed seat (21), a ball screw (22) and a ball nut (23); the fixed seat (21) is fixedly connected with the rack (1), and the ball screw (22) is vertically arranged and rotatably connected to the fixed seat (21); the ball nut (23) is in threaded connection with the ball screw (22), and the side surface of the ball nut (23) is fixedly connected with a driving sliding rod (24); a driving sliding groove (26) in the vertical direction is formed in the rack (1); the two ends of the driving sliding rod (24) are provided with convex blocks (25), and the length of the driving sliding rod (24) is larger than that of the driving sliding chute (26).

3. The spring tester of claim 2, wherein: the driving mechanism (2) comprises a worm wheel (27), a worm (28) and a servo motor (29); the worm wheel (27) and the worm (28) are arranged on the rack (1) and located below the fixed seat (21), the worm wheel (27) is meshed with the worm (28), one end of the worm (28) is fixedly connected with an output shaft of the servo motor (29), and a rotating shaft of the worm wheel (27) is fixedly connected with the ball screw (22).

4. The spring tester of claim 1, wherein: the test bench (3) is fixedly connected with the ball nut (23), and three clamping sliding grooves (31) extending along the radial direction of the test bench (3) are formed in the test bench (3); the clamping chutes (31) are uniformly distributed along the circumferential direction of the axis of the surface of the test board (3), a clamping plate (32) is fixedly connected to one side close to the edge of the test board (3), clamping bolts (33) are connected to the clamping plate (32) in a threaded mode, and clamping sliding blocks (34) are rotatably connected to the bottoms of the clamping bolts (33); the clamping slide block (34) is close to one side of the center of the test board (3) and is fixedly connected with a rubber sheet (35), and the clamping slide block (34) protrudes out of the upper surface of the test board (3).

5. The spring tester of claim 1, wherein: the frame (1) is provided with a locking sliding groove (11); the locking sliding chute (11) is connected with two locking sliding blocks (12) in a sliding manner; the locking sliding blocks (12) are respectively and fixedly connected with connecting plates (14); four pressure sensors (4) are arranged, and every two pressure sensors are fixedly connected with the connecting plate (14); a locking piece (13) is arranged between the locking sliding block (12) and the locking sliding groove (11).

6. The spring tester of claim 5, wherein: the locking piece 13 comprises a locking bolt, the locking bolt is in threaded connection with the locking sliding block (12), and the bottom of the locking bolt is in contact with the bottom of the locking sliding groove (11).

7. The spring tester of claim 1, wherein: the frame (1) is fixedly connected with a distance sensor (5), and the bottom ends of the distance sensor (5) and the pressure sensor (4) are located on the same horizontal plane.

8. The spring tester of claim 1, wherein: the bottom of the frame (1) is fixedly connected with a plurality of connecting rods (15); the connecting rod (15) is rotatably connected with a roller (17).

9. The spring tester of claim 8, wherein: a brake bolt (16) is connected to the connecting rod (15) in a threaded manner; the bottom of the brake bolt (16) is fixedly connected with a brake pad (18); a brake disc (19) is fixedly connected to one side, close to the connecting rod (15), of the roller (17); the brake pad (18) is abutted against the brake disc (19).