CN216247085U

CN216247085U - Spring stiffness detection device

Info

Publication number: CN216247085U
Application number: CN202123017494.9U
Authority: CN
Inventors: 韩飞; 顾斌; 穆思超
Original assignee: North China University of Technology
Current assignee: North China University of Technology
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-04-08
Anticipated expiration: 2031-12-03

Abstract

The utility model provides a spring stiffness detection device, which relates to the technical field of springs and comprises a detection plate, a spring, a displacement rod, a displacement sensor, a controller, a hydraulic drive and a sliding plate. The spring is convenient to mount and dismount by arranging the clamping block and the fixing block, the spring can be compressed at a constant speed by hydraulic driving, the pressure sensor can record the pressure and display the pressure on the controller, the displacement sensor automatically records the displacement of the spring and displays the displacement on the controller, the pressure and the displacement in the detection process are obtained by the controller, so that the rigidity of the spring is calculated, the device is small in size, easy to process and assemble and convenient to operate in the detection process, and the combination of the pressure sensor and the displacement sensor can be used for fast reading, so that the rigidity of the spring is detected, and meanwhile, the detection result is more accurate.

Description

Spring stiffness detection device

Technical Field

The utility model relates to the technical field of springs, in particular to a spring stiffness detection device.

Background

The spring is a mechanical part made of elastic material and working by elasticity, is deformed under the action of external force, and is restored to the original shape after the external force is removed, and is generally made of spring steel. The types of springs are complex and various, and mainly comprise a spiral spring, a volute spiral spring, a plate spring, a special-shaped spring and the like according to shapes, an important performance parameter of the spring is the rigidity of the spring, in the field of spring production and manufacturing, in order to ensure the performance of the spring, the spring needs to be tested for a plurality of items, wherein the test comprises the test of the elastic rigidity, and the rigidity of the spring is related to the types of materials, processing and processing processes and the like.

In the prior art, for example, chinese patent No. CN212206519U, "a small adjustable spring elastic stiffness detection device", has a detection device housing, a first lifting hook, a second lifting hook, a reading pointer, a sliding block, a third lifting hook, a limit tab, a set screw, a sliding slot, a scale mark, and a circular hole. Use this spring elastic stiffness detection device, because the sliding block can freely slide in detection device shell spout, consequently the spring of different length of detectable, in addition, detection device shell top has been beaten the round hole, conveniently carries and hang. The first lifting hook, the second lifting hook, the third lifting hook, the reading pointer and the limiting lug are all detachable, and maintenance and replacement are convenient.

However, in the prior art, the existing spring stiffness detection device mainly adopts a fixed plate to fix one end of a spring, measures a tension value and a deformation amount after pulling or compressing the spring, and then calculates the elastic stiffness of the spring according to hooke's law, that is, in the prior art, a stiffness value is usually calculated through a spring design empirical formula, but the empirical formula usually does not have universality, so that the finally calculated spring stiffness also has inaccuracy.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that in the prior art, the rigidity value is calculated through a spring design empirical formula, the empirical formula does not have universality, the finally calculated spring rigidity also has inaccuracy, and most of the existing spring rigidity detection devices are complex in structure, large in size and difficult in reading.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a spring stiffness detection device, includes pick-up plate, spring, displacement rod, displacement sensor, controller, hydraulic drive and sliding plate, the top one end of pick-up plate and the bottom fixed mounting of controller, the other end and the one end fixed mounting of hydraulic drive of pick-up plate, the inboard fixedly connected with pressure sensor of controller, hydraulic drive's one end swing joint has the actuating lever, the one end of displacement rod and displacement sensor's one end fixed connection, the other end fixedly connected with supporting shoe of displacement rod, the outer wall sliding connection of displacement rod has the displacement slider, the one end fixedly connected with fixed block of spring, the other end fixedly connected with fixture block of spring, one side and pressure sensor's the outside joint of fixture block.

Preferably, one end of the detection plate is fixedly connected with a hanging rod, and two ends of the bottom of the detection plate are symmetrically and fixedly connected with backing plates.

Preferably, the bottom of the supporting block is fixedly connected with the top of the detection plate, the bottom of the displacement sensor is fixedly connected with the top of the detection plate, and sliding grooves are symmetrically formed in the inner sides of two ends of the detection plate.

Preferably, both ends of the sliding plate are slidably connected with the inner wall of the sliding groove, and one side of the sliding plate is fixedly connected with a clamping piece.

Preferably, one end of the clamping piece is clamped with the inner wall of the clamping groove, and one end of the top of the sliding plate is fixedly connected with a connecting rod.

Preferably, the top of the connecting rod is fixedly mounted on one side of the displacement slider, and one end of the driving rod is fixedly connected with one end of the sliding plate.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. according to the spring compression device, the clamping block and the fixing block are arranged, the clamping block and the pressure sensor can be clamped and fixed, the clamping piece and the fixing block can also be clamped and connected through the clamping groove, the spring can be conveniently installed and detached through the clamping block and the fixing block, pressure can be applied to the spring through increasing hydraulic drive, and the spring can be compressed at a constant speed through the hydraulic drive.

2. According to the utility model, through arranging the pressure sensor and the displacement sensor, the pressure sensor can record pressure and display the pressure on the controller, the displacement sensor automatically records the displacement of the spring and simultaneously displays the displacement on the controller, and the pressure and the displacement in the detection process are obtained through the controller, so that the rigidity of the spring is calculated.

Drawings

FIG. 1 is a perspective view of a spring rate detection device according to the present invention;

FIG. 2 is an enlarged detail view of the spring rate detection device shown in FIG. 1 at A according to the present invention;

FIG. 3 is a schematic structural diagram of a spring rate detection device according to the present invention;

fig. 4 is a top view of a spring rate detection device according to the present invention.

Illustration of the drawings: 1. a base plate; 2. detecting a plate; 3. hydraulic driving; 4. a drive rod; 5. a spring; 6. a displacement rod; 7. a hanging rod; 8. a displacement sensor; 9. a controller; 10. a sliding groove; 11. a clamping block; 12. a pressure sensor; 13. a sliding plate; 14. a fixed block; 15. a displacement slide block; 16. a connecting rod; 17. a fastener; 18. a support block; 19. a clamping groove.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.

Embodiment 1, as shown in fig. 1 to 4, the present invention provides a spring stiffness detecting apparatus, which includes a detecting plate 2, a spring 5, a displacement rod 6, a displacement sensor 8, a controller 9, a hydraulic drive 3, and a sliding plate 13, wherein one end of the top of the detecting plate 2 is fixedly mounted on the bottom of the controller 9, the other end of the detecting plate 2 is fixedly mounted on one end of the hydraulic drive 3, the inner side of the controller 9 is fixedly connected with a pressure sensor 12, the pressure sensor 12 can record pressure and display the pressure on the controller 9, one end of the hydraulic drive 3 is movably connected with a driving rod 4, one end of the displacement rod 6 is fixedly connected with one end of the displacement sensor 8, the displacement sensor 8 automatically records displacement of the spring 5 and displays the displacement on the controller 9, the other end of the displacement rod 6 is fixedly connected with a supporting block 18, the supporting block 18 is used for supporting the displacement rod 6, the outer wall sliding connection of displacement pole 6 has displacement slider 15, and the one end fixedly connected with fixed block 14 of spring 5, the other end fixedly connected with fixture block 11 of spring 5, one side and the outside joint of pressure sensor 12 of fixture block 11.

One end fixedly connected with peg 7 of pick-up plate 2, the bottom both ends symmetry fixedly connected with backing plate 1 of pick-up plate 2, peg 7 conveniently hangs the device when not using, and backing plate 1 plays strutting arrangement's effect.

The bottom of supporting shoe 18 and the top of pick-up plate 2 fixed connection, displacement sensor 8's bottom and the top fixed connection of pick-up plate 2, the inboard symmetry in both ends of pick-up plate 2 has seted up sliding tray 10, and the sliding plate 13 of being convenient for slides in sliding tray 10.

Two ends of the sliding plate 13 are slidably connected with the inner wall of the sliding groove 10, one side of the sliding plate 13 is fixedly connected with a clamping piece 17, and the clamping piece 17 can be clamped with a clamping groove 19 of the fixed block 14.

One end of clamping piece 17 is clamped with the inner wall of clamping groove 19, one end of the top of sliding plate 13 is fixedly connected with connecting rod 16, and sliding plate 13 drives displacement slide block 15 to slide on displacement rod 6 through connecting rod 16.

The top of the connecting rod 16 is fixedly mounted on one side of the displacement slider 15, one end of the driving rod 4 is fixedly connected with one end of the sliding plate 13, the hydraulic drive 3 can push the sliding plate 13 to slide through the driving rod 4, and the sliding plate 13 applies pressure to the spring 5.

The working principle of the utility model is as follows: when the device is used, firstly, two backing plates 1 at the bottom of the device are stably placed on a table top, a controller 9 can control a pressure sensor 12 and a displacement sensor 8, a sliding plate 13 slides to one end close to a hydraulic drive 3, the readings of the pressure sensor 12 and the displacement sensor 8 are reset to zero through the controller 9, a spring 5 is horizontally placed in the middle of a detection plate 2, a clamping block 11 at one end of the spring 5 is close to the pressure sensor 12, the clamping block 11 and the pressure sensor 12 are clamped and fixed firstly, the sliding plate 13 slides towards the spring 5 under the condition that the spring 5 is not extruded and deformed by any force, a clamping block 17 at the other end of the spring 5 is close to a fixed block 14, the clamping block 17 is clamped with a clamping groove 19 of the fixed block 14, the hydraulic drive 3 is started, the hydraulic drive 3 can push the sliding plate 13 to slide through a driving rod 4, and the sliding plate 13 applies pressure to the spring 5, spring 5 exerts pressure to pressure sensor 12 again, pressure sensor 12 can record pressure and show on controller 9, sliding plate 13 drives displacement slider 15 through connecting rod 16 and slides on displacement rod 6 simultaneously, the gliding distance of displacement slider 15 on displacement rod 6 is the displacement distance of spring 5 compression promptly, thereby make displacement sensor 8 record the displacement volume automatic recording of spring 5, displacement sensor 8 and controller 9 wireless connection, show on controller 9 simultaneously, after the detection is accomplished, obtain pressure and the displacement in the testing process through controller 9, thereby calculate the rigidity of this spring 5 in different stages. The device is small, and the equipment of easy processing, testing process convenient operation can make spring 5 remove at the uniform velocity through hydraulic drive 3, and actuating lever 4 can make spring 5 receive the compression at the uniform velocity, and the combination of rethread pressure sensor 12 and displacement sensor 8 can quick reading to detect out spring 5's rigidity, make the testing result more accurate simultaneously.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims

1. The utility model provides a spring rate detection device, includes pick-up plate (2), spring (5), displacement pole (6), displacement sensor (8), controller (9), hydraulic drive (3) and sliding plate (13), its characterized in that: the detection device comprises a detection plate (2), a pressure sensor (9), a driving rod (4), a displacement rod (6), a supporting block (18) and a displacement slider (15), wherein the top end of the detection plate (2) is fixedly installed at the bottom of the controller (9), the other end of the detection plate (2) is fixedly installed at one end of the hydraulic drive (3), the pressure sensor (12) is fixedly connected to the inner side of the controller (9), the driving rod (4) is movably connected to one end of the hydraulic drive (3), one end of the displacement rod (6) is fixedly connected with one end of the displacement sensor (8), the other end of the displacement rod (6) is fixedly connected with the supporting block (18), the displacement slider (15) is slidably connected to the outer wall of the displacement rod (6), a fixed block (14) is fixedly connected to one end of the spring (5), a fixture block (11) is fixedly connected to the other end of the spring (5), and one side of the fixture block (11) is clamped with the outer side of the pressure sensor (12).

2. The spring rate detection device according to claim 1, characterized in that: one end of the detection plate (2) is fixedly connected with a hanging rod (7), and two ends of the bottom of the detection plate (2) are symmetrically and fixedly connected with base plates (1).

3. The spring rate detection device according to claim 1, characterized in that: the bottom of the supporting block (18) is fixedly connected with the top of the detection plate (2), the bottom of the displacement sensor (8) is fixedly connected with the top of the detection plate (2), and sliding grooves (10) are symmetrically formed in the inner sides of the two ends of the detection plate (2).

4. The spring rate detection device according to claim 3, characterized in that: two ends of the sliding plate (13) are slidably connected with the inner wall of the sliding groove (10), and one side of the sliding plate (13) is fixedly connected with a clamping piece (17).

5. The spring rate detection device according to claim 4, wherein: one end of the clamping piece (17) is clamped with the inner wall of the clamping groove (19), and one end of the top of the sliding plate (13) is fixedly connected with a connecting rod (16).

6. The spring rate detection device according to claim 5, wherein: the top of the connecting rod (16) is fixedly installed with one side of the displacement slide block (15), and one end of the driving rod (4) is fixedly connected with one end of the sliding plate (13).