CN212722025U

CN212722025U - Spring fatigue test machine

Info

Publication number: CN212722025U
Application number: CN202022146689.2U
Authority: CN
Inventors: 屠富杰; 罗胜龙; 杨云丰
Original assignee: Zhejiang Fuchun Spring Co ltd
Current assignee: Zhejiang Fuchun Spring Co ltd
Priority date: 2020-09-26
Filing date: 2020-09-26
Publication date: 2021-03-16
Anticipated expiration: 2030-09-26

Abstract

The utility model belongs to the technical field of spring test equipment and specifically relates to a spring fatigue test machine is related to, it includes roof and bottom plate, be connected with many spinal branchs vaulting pole between roof and the bottom plate, slide on the bracing piece and be connected with the stripper plate, the stripper plate is located between roof and the bottom plate, be provided with the lifting unit who drives the stripper plate and go up and down on the bottom plate, be connected with the mounting panel that is used for positioning spring on the bracing piece, be connected with the installation piece on the mounting panel, set up the mounting groove that supplies the spring to stretch into in the installation piece on the installation piece, be connected with the fixed block on the mounting groove, be provided with the locating component who is. The present application has the effect of reducing the likelihood of spring pop-up during testing.

Description

Spring fatigue test machine

Technical Field

The application relates to the field of spring test equipment, in particular to a spring fatigue test machine.

Background

The fatigue property of the spring is an important index of the quality of the spring, and the fatigue property of the spring refers to a fracture phenomenon generated after the spring is extruded and deformed, generally, cracks are generated after the metal is deformed, the cracks are small and even can be ignored sometimes, but the cracks are increased and the crack gaps are increased after the metal is deformed frequently, and finally, the spring is fatigued. The spring fatigue test machine mainly carries out fatigue test to the spring through the compression spring to obtain the fatigue characteristic of being detected the spring, thereby can correctly use suitable spring in different application occasions.

The utility model discloses a chinese utility model patent that grant bulletin number is CN203772537U discloses a spring fatigue test machine, including the control center of cylinder, the work of control cylinder, mutual parallel arrangement's lower plate, top board, be equipped with the sliding guide arm on the lower plate, the top board is equipped with the through-hole with sliding guide arm looks adaptation, the other end that the lower plate was connected to the sliding guide arm is equipped with the backup pad, the cylinder is located in the backup pad, cylinder output shaft and top board fixed connection, one side of the relative top board of lower plate is equipped with a plurality of recesses that are used for placing the spring, a plurality of recess evenly distributed are in the lower plate.

With respect to the related art in the above, the inventors consider that: the spring is placed on the recess, when returning to initial position after the top board compression spring, the elastic force of spring self makes the spring pop out the recess easily, and the spring that pops out causes the injury to operating personnel easily.

SUMMERY OF THE UTILITY MODEL

In order to reduce the possibility of spring ejection during testing, the present application provides a spring fatigue testing machine.

The application provides a spring fatigue test machine adopts following technical scheme:

a spring fatigue testing machine comprises a top plate and a bottom plate, wherein a plurality of supporting rods are connected between the top plate and the bottom plate, extrusion plates are connected on the supporting rods in a sliding manner, the extrusion plates are positioned between the top plate and the bottom plate, a lifting assembly for driving the extrusion plates to lift is arranged on the bottom plate, a mounting plate for positioning a spring is connected on the supporting rods, a mounting block is connected on the mounting plate, a mounting groove for the spring to extend into the mounting block is formed in the mounting block, a fixing block is connected on the mounting groove, a positioning assembly for positioning the end part of the spring is arranged on the mounting block, the positioning assembly comprises a positioning block, a threaded rod and a rotating piece, the positioning block is connected in the mounting groove in a sliding manner, the rotating piece is rotatably connected in the positioning block, one end of the threaded rod, the threaded rod is in threaded connection with the positioning block; the end part of the spring is positioned between the fixed block and the positioning block; and the fixed block is provided with a limiting assembly for limiting the end part of the spring.

Through adopting above-mentioned technical scheme, during the test spring, earlier with the spring location in the installation piece, rethread lifting unit drives the stripper plate and goes up and down, and the stripper plate goes up and down to extrude the spring to test the spring. In the process of positioning the spring in the mounting block, firstly, one end part of the spring extends into the mounting groove, then, the operating handle is rotated to drive the threaded rod to rotate, and the threaded rod rotates to enable the rotating sheet to move towards the direction close to the fixing block, so that the positioning block moves towards the direction close to the fixing block; and spacing subassembly through on the fixed block carries on spacingly to the spring tip jointly, makes the spring be difficult for popping out the installation piece in the test procedure, avoids causing the injury to operating personnel to a certain extent.

Optionally, the limiting assembly comprises a limiting block, the limiting block is connected to the fixed block in a sliding mode, a locking assembly used for positioning the limiting block is arranged on the fixed block, and the end portion of the spring is positioned between the limiting block and the positioning block.

Through adopting above-mentioned technical scheme, stopper and locating piece are together with spring end positioning in the installation piece to the stopper passes through locking Assembly with spring locking between fixed block and stopper, further reduces the spring and pops out the possibility of installing the piece in the test procedure.

Optionally, the locking assembly includes a circular table for moving the limiting block toward the direction close to the positioning block and a screw connected with the circular table, a connecting groove is formed in the fixing block, the circular table is connected in the connecting groove in a sliding manner, and a guide inclined plane abutted against the side wall of the circular table is arranged on the limiting block; the screw rod is in threaded connection with the fixed block; the fixed block is internally provided with a reset piece for retracting the limiting block into the fixed block.

Through adopting above-mentioned technical scheme, when needs locking spring tip, operating personnel rotates the screw rod, drives the round platform and rotates downwards, and the round platform is contradicted with the guide inclined plane on the stopper to the guide inclined plane receives the effort that moves towards being close to the locating piece direction, makes the stopper move to the direction that is close to the locating piece, thereby makes the spring tip be located between stopper and the locating piece.

Optionally, the reset piece includes reset spring, reset spring one end and stopper are kept away from the one end of locating piece and are connected, the other end and spread groove lateral wall and be connected.

By adopting the technical scheme, when the spring needs to be taken out, an operator rotates the screw rod to drive the circular truncated cone to rotate upwards, so that the guide inclined plane of the limiting block is separated from the circular truncated cone, and the limiting block returns to the fixed block under the elastic acting force of the return spring; an operator rotates the operating handle to rotate the rotating sheet in the direction away from the limiting block, so that the positioning block is driven to move in the direction away from the limiting block, and the spring is conveniently taken out.

Optionally, a connecting block for placing the spring is arranged on the extrusion plate, an annular groove is formed in the connecting block, and one end, far away from the mounting block, of the spring extends into the annular groove.

Through adopting above-mentioned technical scheme, set up the connecting block on the stripper plate, make the spring keep away from the one end of installation piece and stretch into the ring channel in the connecting block, further reduce the spring and pop out the possibility of hindering operating personnel.

Optionally, the lifting assembly includes a disc, a connecting rod and a driving motor, the driving motor is connected to the bottom plate, the disc is coaxially connected to an output shaft of the driving motor, one end of the connecting rod is hinged to the disc, and a hinge point of the connecting rod and the disc deviates from a circle center of the disc; the other end of the connecting rod is hinged with the extrusion plate.

By adopting the technical scheme, when the extrusion plate is driven to lift, the driving motor is started to drive the disc to rotate, the disc rotates to drive the connecting rod to lift, and the connecting rod lifts to drive the extrusion plate to lift, so that the operation is convenient and simple.

Optionally, a plurality of hinge points hinged to the connecting rod are arranged on the disk, and distances from the hinge points to the center of the disk are different.

Through adopting above-mentioned technical scheme, can adjust the pin joint of connecting rod and disc according to the demand, select the distance of suitable pin joint to the disc centre of a circle, the distance of adjustment extrusion spring improves the application scope of spring fatigue test machine.

Optionally, the extrusion plate is connected with a hinge block through a bolt, and one end of the connecting rod, which is far away from the disc, is hinged to the hinge block.

Through adopting above-mentioned technical scheme, when the connecting rod was articulated with the stripper plate, earlier pass through bolt fixed connection on the stripper plate with articulated piece, keep away from the one end of disc with the connecting rod again and articulate the piece articulated, make the installation dismantle convenient simple.

In summary, the present application includes at least one of the following beneficial technical effects:

1. in the process of positioning the spring in the mounting block, firstly, one end part of the spring extends into the mounting groove, then, the operating handle is rotated to drive the threaded rod to rotate, and the threaded rod rotates to enable the rotating sheet to move towards the direction close to the fixing block, so that the positioning block moves towards the direction close to the fixing block; the end part of the spring is limited by the limiting component on the fixed block, so that the spring is not easy to pop out of the mounting block in the test process, and the injury to operators is avoided to a certain extent;

2. the limiting block and the positioning block position the end of the spring in the mounting block together, and the limiting block locks the spring between the fixing block and the limiting block through the locking assembly, so that the possibility that the spring pops out of the mounting block in the testing process is further reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic view of the squeeze plate and lift assembly of FIG. 1;

FIG. 3 is a schematic view of the mounting block and spring of FIG. 1;

fig. 4 is a cross-sectional view taken along line a-a of fig. 3, showing the positioning assembly and the locking assembly.

Description of reference numerals: 1. a support bar; 11. a top plate; 12. a base plate; 2. a pressing plate; 21. a hinged block; 22. connecting blocks; 221. an annular groove; 3. a lifting assembly; 31. a disc; 311. a hinge point; 32. a connecting rod; 33. a drive motor; 4. mounting a plate; 41. mounting blocks; 411. mounting grooves; 42. a fixed block; 421. connecting grooves; 422. a return spring; 5. a positioning assembly; 51. positioning blocks; 52. a threaded rod; 521. an operating handle; 53. a rotating sheet; 6. a limiting block; 61. a guide ramp; 7. a locking assembly; 71. a circular truncated cone; 72. a screw; 721. a limiting handle; 8. a spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a spring fatigue testing machine. Referring to fig. 1, the spring fatigue testing machine includes a top plate 11 and a bottom plate 12, wherein the top plate 11 and the bottom plate 12 are both configured in a rectangular parallelepiped shape, and four support rods 1 are connected between the top plate 11 and the bottom plate 12.

The vertical setting of bracing piece 1, and roof 11 and bottom plate 12 and 1 fixed connection of bracing piece, the sliding connection has stripper plate 2 on the bracing piece 1, and stripper plate 2 slides along vertical direction, and stripper plate 2 is located between roof 11 and the bottom plate 12. The bottom plate 12 is provided with a lifting component 3 for driving the extrusion plate 2 to lift.

Referring to fig. 1 and 2, the lifting assembly 3 includes a disc 31, a connecting rod 32 and a driving motor 33, the driving motor 33 is fixedly connected to the base plate 12, an output shaft of the driving motor 33 is coaxially and fixedly connected to the disc 31, one end of the connecting rod 32 is hinged to the disc 31, and a hinge point 311 of the connecting rod 32 and the disc 31 deviates from a circle center of the disc 31. The disk 31 is provided with a plurality of hinge points 311 which can be hinged with the connecting rod 32, and the plurality of hinge points 311 are distributed along the radial direction of the disk 31.

The extrusion plate 2 is connected with a hinge block 21 through a bolt, and one end of the connecting rod 32 far away from the disc 31 is hinged with the hinge block 21.

The equal fixedly connected with of stripper plate 2 upper end and lower extreme is used for placing connecting block 22 of spring 8, and connecting block 22 appearance sets to cylindrically, has seted up ring channel 221 in the connecting block 22, and the spring 8 is kept away from the one end of mounting panel 4 and is stretched into in the ring channel 221.

Referring to fig. 1 and 3, the support rod 1 is fixedly connected with two mounting plates 4 for positioning the spring 8, one mounting plate 4 is located between the bottom plate 12 and the extrusion plate 2, and the other mounting plate 4 is located between the top plate 11 and the extrusion plate 2.

The mounting plate 4 is fixedly connected with mounting blocks 41, and the mounting blocks 41 are arranged in a cylindrical shape.

Referring to fig. 3 and 4, the mounting block 41 is provided with a mounting groove 411, and one end of the spring 8, which is far away from the compression plate 2, extends into the mounting groove 411. The fixing block 42 is fixedly connected to the axis of the mounting groove 411.

The mounting block 41 is provided with a positioning assembly 5 for positioning the end of the spring 8, and the positioning assembly 5 comprises a positioning block 51, a threaded rod 52 and a rotating piece 53. The positioning block 51 is slidably connected in the mounting groove 411 along the radial direction of the mounting block 41, and the rotating piece 53 is rotatably connected in the positioning block 51.

One end of the threaded rod 52 is coaxially and fixedly connected with the rotating sheet 53, the other end of the threaded rod extends out of the positioning block 51 and then is fixedly connected with an operating handle 521, and the threaded rod 52 is in threaded connection with the positioning block 51.

The end of the spring 8 is positioned between the fixed block 42 and the positioning block 51. The fixed block 42 is provided with a limiting component for limiting the end part of the spring 8.

The limiting assembly comprises a limiting block 6, the fixed block 42 is cylindrical in shape, and the limiting block 6 is connected to the fixed block 42 in a sliding mode along the radial direction of the fixed block 42. The fixed block 42 is provided with a locking assembly 7 for positioning the limiting block 6, the locking assembly 7 comprises a circular truncated cone 71 and a screw 72, and the fixed block 42 is internally provided with a vertically arranged connecting groove 421.

The circular truncated cone 71 is connected in the connecting groove 421 in a sliding manner along the vertical direction, and the diameter of the circular truncated cone 71 is gradually reduced in the direction from the extrusion plate 2 to the mounting plate 4. One end of the limiting block 6, which is far away from the positioning block 51, is provided with a guide inclined surface 61, and the guide inclined surface 61 is abutted against the side wall of the circular truncated cone 71.

One end of the screw 72 is coaxially and fixedly connected with the circular truncated cone 71, the other end extends towards the direction close to the extrusion plate 2, and a limit handle 721 is fixedly connected with the screw. The screw 72 is in threaded connection with the fixed block 42.

Be provided with in the fixed block 42 and be used for retracting the stopper 6 to the piece that resets in the fixed block 42, reset the piece and include reset spring 422, reset spring 422 one end and stopper 6 keep away from the one end fixed connection of locating piece 51, the other end and spread groove 421 lateral wall fixed connection.

The implementation principle of the spring fatigue testing machine in the embodiment of the application is as follows:

during the test spring 8, earlier fix a position spring 8 in installation piece 41, when drive stripper plate 2 goes up and down, open driving motor 33 and drive disc 31 and rotate, disc 31 rotates and drives connecting rod 32 and goes up and down, and connecting rod 32 goes up and down and drives stripper plate 2 and goes up and down, and stripper plate 2 goes up and down and extrudes spring 8 to test spring 8.

In the process of positioning the spring 8 in the mounting block 41, the end of one end of the spring 8 is inserted into the mounting groove 411, the operating handle 521 is rotated to drive the threaded rod 52 to rotate, the threaded rod 52 rotates to move the rotating piece 53 in the direction close to the fixing block 42, and the positioning block 51 moves in the direction close to the fixing block 42.

An operator rotates the screw 72 to drive the circular truncated cone 71 to rotate downwards, the circular truncated cone 71 abuts against the guide inclined surface 61 on the limiting block 6, and the guide inclined surface 61 is subjected to an acting force moving towards the direction close to the positioning block 51, so that the limiting block 6 moves towards the direction close to the positioning block 51, and the end of the spring 8 is positioned between the limiting block 6 and the positioning block 51.

When the spring 8 needs to be taken out, an operator rotates the screw 72 to drive the circular truncated cone 71 to rotate upwards, so that the guide inclined surface 61 of the limiting block 6 is separated from the circular truncated cone 71, and the limiting block 6 returns to the fixed block 42 under the elastic acting force of the return spring 422; an operator rotates the operating handle 521 to rotate the rotating sheet 53 in a direction away from the limiting block 6, so as to drive the positioning block 51 to move in a direction away from the limiting block 6, and the spring 8 can be taken out.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a spring fatigue test machine, includes roof (11) and bottom plate (12), be connected with many spinal branchs vaulting pole (1) between roof (11) and bottom plate (12), it has stripper plate (2) to slide on bracing piece (1), stripper plate (2) are located between roof (11) and bottom plate (12), be provided with lifting unit (3) that drive stripper plate (2) go up and down on bottom plate (12), its characterized in that: the supporting rod (1) is connected with a mounting plate (4) for positioning a spring (8), the mounting plate (4) is connected with a mounting block (41), the mounting block (41) is provided with a mounting groove (411) for the spring (8) to extend into the mounting block (41), the mounting groove (411) is connected with a fixed block (42), the mounting block (41) is provided with a positioning component (5) for positioning the end part of the spring (8), the positioning component (5) comprises a positioning block (51), a threaded rod (52) and a rotating sheet (53), the positioning block (51) is connected in the mounting groove (411) in a sliding manner, the rotating sheet (53) is connected in the positioning block (51) in a rotating manner, one end of the threaded rod (52) is connected with the rotating sheet (53), the other end of the threaded rod extends out of the positioning block (51) and then is connected with an operating handle (521), and the threaded rod (52) is in threaded connection with the positioning block (51); the end part of the spring (8) is positioned between the fixed block (42) and the positioning block (51); and the fixed block (42) is provided with a limiting assembly for limiting the end part of the spring (8).

2. A spring fatigue testing machine according to claim 1, wherein: the limiting assembly comprises a limiting block (6), the limiting block (6) is connected to the fixing block (42) in a sliding mode, a locking assembly (7) used for positioning the limiting block (6) is arranged on the fixing block (42), and the end portion of the spring (8) is positioned between the limiting block (6) and the positioning block (51).

3. A spring fatigue testing machine according to claim 2, wherein: the locking assembly (7) comprises a round table (71) and a screw rod (72), the round table (71) is used for moving the limiting block (6) towards the direction close to the positioning block (51), the screw rod (72) is connected with the round table (71), a connecting groove (421) is formed in the fixing block (42), the round table (71) is connected in the connecting groove (421) in a sliding mode, and a guide inclined surface (61) abutted to the side wall of the round table (71) is arranged on the limiting block (6); the screw rod (72) is in threaded connection with the fixed block (42); a reset piece used for retracting the limiting block (6) into the fixing block (42) is arranged in the fixing block (42).

4. A spring fatigue testing machine according to claim 3, wherein: the piece that resets includes reset spring (422), reset spring (422) one end and stopper (6) are kept away from the one end of locating piece (51) and are connected, the other end is connected with spread groove (421) lateral wall.

5. The spring fatigue testing machine of claim 4, wherein: be provided with connecting block (22) that are used for placing spring (8) on stripper plate (2), set up ring channel (221) in connecting block (22), the one end that installation piece (41) were kept away from in spring (8) stretches into ring channel (221).

6. A spring fatigue testing machine according to claim 1, wherein: the lifting assembly (3) comprises a disc (31), a connecting rod (32) and a driving motor (33), the driving motor (33) is connected to the bottom plate (12), the disc (31) is coaxially connected with an output shaft of the driving motor (33), one end of the connecting rod (32) is hinged to the disc (31), and a hinged point (311) of the connecting rod (32) and the disc (31) deviates from the circle center of the disc (31); the other end of the connecting rod (32) is hinged with the extrusion plate (2).

7. The spring fatigue testing machine of claim 6, wherein: the disc (31) is provided with a plurality of hinge points (311) which can be hinged with the connecting rod (32), and the distances from the hinge points (311) to the circle center of the disc (31) are different.

8. The spring fatigue testing machine of claim 7, wherein: the extrusion plate (2) is connected with a hinge block (21) through a bolt, and one end, far away from the disc (31), of the connecting rod (32) is hinged to the hinge block (21).