CN214952053U

CN214952053U - Spring fatigue test device

Info

Publication number: CN214952053U
Application number: CN202121437363.3U
Authority: CN
Inventors: 屠富杰; 王志苗; 王其; 倪曰明; 楼洲杰; 寿永沅; 朱成伟
Original assignee: Zhejiang Fuchun Spring Co ltd
Current assignee: Zhejiang Fuchun Spring Co ltd
Priority date: 2021-06-26
Filing date: 2021-06-26
Publication date: 2021-11-30
Anticipated expiration: 2031-06-26

Abstract

The utility model provides a spring fatigue test device, which comprises a frame, be provided with the cylinder in the frame, the pressure disk, slide plate and lifting unit, the cylinder is installed at the frame top, the piston rod of cylinder is vertical down, the pressure disk is installed on the piston rod of cylinder, lifting unit installs in the frame bottom, slide plate connects on lifting unit, one side that slide plate is close to the clamp plate is provided with the mount pad, be provided with the screw hole on the mount pad, set up the work groove that is used for installing the spring on the mount pad, the work inslot is provided with spacing subassembly, spacing subassembly includes the stopper, spacing piece and gag lever post, stopper fixed mounting is in the work groove, the gag lever post passes the screw hole and stretches into the work inslot, spacing piece rotates and installs the tip of stretching into the work inslot in the gag lever post. This application reduces the position of spring and the predetermined probability that compresses tightly the position and produce the deviation to a certain extent, carries out the spacing of circumference to the spring under the condition that does not disturb the spring and carry out fatigue test, has improved spring fatigue test's accuracy nature to a certain extent.

Description

Spring fatigue test device

Technical Field

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

Background

Springs are widely used in various fields as mechanical parts, and people mainly use the return function of the springs when using the springs, however, after the springs are used for a long time, the springs are fatigued, so that the return function is gradually weakened until the springs are failed. The spring fatigue testing device mainly tests the fatigue of the spring through a compression spring or an extension spring so as to obtain the fatigue characteristic of the detected spring, so that the spring fatigue testing device becomes one of necessary devices of spring manufacturers and application manufacturers.

Chinese utility model patent that bulletin number is CN203772537U discloses a spring fatigue test machine, and it includes cylinder, piston rod, lower plate, top board and backup pad, and the cylinder setting is in the backup pad, the piston rod and the upper plate fixed connection of cylinder, upper plate and lower plate parallel arrangement, and the recess of placing the spring is seted up to one side that the lower plate is close to the upper plate. When the fatigue test is carried out to the spring in needs, the upper plate is close to the lower plate under the effect of cylinder, and the spring on the lower plate recess under the upper plate butt, until accomplishing the compression of spring, through cylinder lifting upper plate, repeated many times, the completion is to the fatigue test of spring.

In view of the above-mentioned related art, the inventor believes that, in the process of performing the spring fatigue test, since the portion of the spring extending out of the groove lacks the circumferential limit, the elastic force generated when the spring is reset may cause the portion of the spring extending out of the groove to shake, thereby causing the position of the spring to deviate from the predetermined pressing position, and causing a certain error of the spring fatigue test device.

SUMMERY OF THE UTILITY MODEL

In order to increase the spacing work of spring fatigue test device to the spring, improve the accuracy of spring fatigue test, this application provides a spring fatigue test device.

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

the utility model provides a spring fatigue test device, includes the frame, be provided with cylinder, pressure disk, slide plate and lifting unit in the frame, the cylinder is installed at the frame top, the piston rod of cylinder is vertical down, the pressure disk is installed on the piston rod of cylinder, lifting unit installs in the frame bottom, slide plate connects on lifting unit, one side that slide plate is close to the clamp plate is provided with the mount pad, be provided with the screw hole on the mount pad, set up the work groove that is used for installing the spring on the mount pad, the work inslot is provided with spacing subassembly, spacing subassembly includes stopper, spacing piece and gag lever post, stopper fixed mounting is in working the groove, spacing piece slides and connects in working the groove, the gag lever post passes the screw hole and is connected with spacing piece.

Through adopting above-mentioned technical scheme, when spring fatigue test is carried out to needs, put into the work groove of mount pad with the spring that needs the test, spring mounting is between stopper and spacing piece, start the cylinder, the piston rod of cylinder drives the pressure disk and along vertical direction downstream, support the spring until the pressure disk, promote the gag lever post, the gag lever post promotes spacing piece, make spacing piece be close to the spring, spacing piece and stopper carry out spacing work to the spring, reduce the spring to a certain extent and take place horizontally displacement when compressing, start lifting unit, lifting unit drives the slide plate and carries out vertical direction's reciprocating motion, thereby realize the fatigue test to the spring.

Preferably, a connecting groove is formed in the limiting piece, the limiting rod is provided with a threaded section, the limiting rod is in threaded connection with the threaded hole, a handle is fixedly connected to the limiting rod, a protruding block is arranged at one end, far away from the handle, of the limiting rod, and the protruding block is rotatably connected with the connecting groove.

Through adopting above-mentioned technical scheme, rotate the handle of gag lever post, the gag lever post takes place to rotate, and the gag lever post carries out the displacement along the axial, and the gag lever post drives spacing piece and carries out the displacement for spacing piece can move to need carry out fatigue test's spring week side, plays the limiting displacement to the spring.

Preferably, the sliding grooves are formed in the two sides of the rack, the connecting blocks are fixedly connected to the two ends of the sliding plate, and the connecting blocks are connected in the sliding grooves in a sliding mode.

Through adopting above-mentioned technical scheme, the recess that slides plays limiting displacement to sliding of sliding plate, has reduced the probability that takes place the skew when sliding plate moves to a certain extent.

Preferably, the lifting assembly comprises a motor, a rotating disc and a swing arm, the motor is fixedly connected to the bottom of the rack, an output shaft of the motor is connected with the rotating disc, one end of the swing arm is hinged to the rotating disc, and the other end of the swing arm is hinged to the sliding plate.

Through adopting above-mentioned technical scheme, the starter motor, the output shaft of motor drives the rolling disc and takes place to rotate, and swing arm one end is articulated with the rolling disc, and when the rolling disc rotated, the circular motion was done on the rolling disc to the one end of swing arm, and the swing arm is vertical stock, and the other end of swing arm can carry out reciprocating motion along vertical direction, and the scope of motion is the diameter length of rolling disc.

Preferably, a vertical rod is arranged on one side, close to the sliding plate, of the pressing plate, and the position of the vertical rod corresponds to that of the mounting seat.

Through adopting above-mentioned technical scheme, through adjust cylinder for the mount pad is kept away from slightly to the pressure disk, goes into the mount pad with spring mounting, adjust cylinder, pressure disk and spring counterbalance, and the montant can insert in the spring inner ring this moment, reduces the probability that the spring upper end takes place the skew when compressing to a certain extent, thereby improves spring fatigue test's precision.

Preferably, the vertical rod is in a round table shape, and the diameter of the vertical rod is gradually reduced from one side close to the pressure plate to one side far away from the pressure plate.

Through adopting above-mentioned technical scheme, when the installation spring, the less one end of montant diameter plays the effect that the guide montant joint got into in the spring towards the spring for the montant can enter into the inner ring of spring more easily.

Preferably, the upper end of the groove that slides is provided with into oil pipe, the lower extreme of the groove that slides is provided with out oil pipe, the oilhole has been seted up to the upper end of the groove that slides, install into oil pipe and communicate with the external world in the oilhole, it passes into the oilhole and stretches into in the groove that slides to go into oil pipe, the oil outlet has been seted up to the lower extreme of the groove that slides, install oil pipe and communicate with the external world in the oil outlet, the oil pipe passes the oil outlet and stretches into in the groove that slides.

Preferably, the oil inlet pipe and the oil outlet pipe are obliquely arranged.

Through adopting above-mentioned technical scheme, the spring is when carrying out fatigue test, need carry out a large amount of reciprocating motion, set up into oil pipe and income oilhole on the recess that slides, instil into lubricating oil from going into the oilhole, lubricating oil gets into the recess that slides along going into oil pipe, lubricated recess and connecting block that slides, reduce the frictional force of the recess that slides and connecting block, make spring fatigue test more smooth, unnecessary lubricating oil can flow to the frame outside from the oil outlet along the oil outlet pipe of bottom, be convenient for clear up unnecessary lubricating oil.

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

1. through the arrangement of the limiting block, the limiting sheet and the limiting rod, the spring is limited circumferentially under the condition of not interfering the fatigue test work of the spring, so that the accuracy of the fatigue test of the spring is improved to a certain extent;

2. through the setting of oil pipe and oil outlet pipe for the staff can add lubricating oil into the recess that slides, plays the lubrication action to the inner wall of the recess that slides.

Drawings

FIG. 1 is a schematic perspective view of a spring fatigue testing device according to the present application;

FIG. 2 is a cross-sectional view of the spring fatigue testing apparatus of the present application taken along a vertical direction at an oil outlet hole;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is an exploded view of the mounting mechanism of the embodiment of the present application;

fig. 5 is a schematic structural diagram of a lifting assembly in an embodiment of the present application.

Description of reference numerals: 1. a frame; 2. a cylinder; 21. a piston rod; 3. a platen; 31. a vertical rod; 4. a slide plate; 41. connecting blocks; 42. a sliding groove; 43. a threaded rod; 44. connecting grooves; 5. a lifting assembly; 51. a motor; 52. rotating the disc; 53. swinging arms; 6. a mounting seat; 61. a working groove; 7. a limiting component; 71. a limiting block; 72. a limiting sheet; 73. a limiting rod; 721. a connecting groove; 731. a handle; 732. a bump; 80. an oil outlet pipe; 81. an oil outlet hole; 82. entering an oil pipe; 83. an oil inlet hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses spring fatigue test device. Referring to fig. 1, the spring fatigue test device comprises a frame 1, a cylinder 2, a pressure plate 3, a sliding plate 4, a lifting assembly 5 and an installation mechanism, wherein the lifting assembly 5 is used for driving the sliding plate 4 to move, the installation mechanism is installed on the sliding plate 4 and used for installing a spring which needs to be subjected to fatigue test, and the cylinder 2 is used for pushing the pressure plate 3 to move and abut against the spring on the sliding plate 4.

Referring to fig. 1 and 2, two cylinders 2 are located the top of frame 1, and the cylinder body and the frame 1 fixed connection of cylinder 2, the piston rod 21 of cylinder 2 is vertical downwards, and pressure disk 3 fixed mounting is on piston rod 21 and pressure disk 3 is the horizontality, installs montant 31 on the bottom surface of pressure disk 3, and the diameter of montant 31 reduces to the one end of keeping away from pressure disk 3 from the one end that is close to pressure disk 3 gradually.

Referring to fig. 2 and 3, two connecting grooves 44 have been seted up at the both ends of slide 4, set up connecting screw hole in the connecting groove 44, connecting screw hole female connection has threaded rod 43, slide 4 both ends fixedly connected with connecting block 41, connecting block 41 one end and connecting groove 44 joint, set up the corresponding screw hole with the connecting groove 44 screw hole in the connecting block 41 joint part, threaded rod 43 passes the screw hole of connecting block 41 and connecting groove 44 and with slide 4 and connecting block 41 fixed connection. Two inside walls of frame 1 have seted up the recess 42 that slides along vertical direction, and the other end of connecting block 41 slides and connects in the recess 42 that slides, and the recess that slides plays limiting displacement to sliding of sliding plate, has reduced the probability that takes place the skew when sliding plate moves to a certain extent.

Referring to fig. 3 and 4, the mounting mechanism is located on one side of the sliding plate 4 close to the pressure plate 3, the mounting mechanism comprises a mounting seat 6 and a limiting component 7, the mounting seat 6 is cylindrical, the mounting seat 6 is fixedly connected to the top surface of the sliding plate 4, a working groove 61 for mounting a spring is formed in the mounting seat 6, the limiting component 7 is located inside the working groove 61, and the limiting component 7 is used for limiting the spring in the mounting seat 6. When the spring is compressed to the maximum compression amount, the distance between the pressure plate 3 and the sliding plate 4 is greater than the height of the mounting seat 6, and the side wall of the mounting seat 6 is provided with a threaded hole.

Referring to fig. 3 and 4, the limiting component 7 includes a limiting block 71, a limiting piece 72 and a limiting rod 73, the limiting block 71 is fixedly installed at the center of the working groove 61, the limiting block 71 is located under the vertical rod 31, the limiting piece 72 is a 120 ° arc piece, three limiting pieces 72 can form a circular ring with a diameter slightly larger than the limiting block 71 around the circular ring, the limiting piece 72 is connected in the working groove 61 in a sliding manner, a connecting groove 721 is formed on the limiting piece 72, the connecting groove 721 is located at the center of the limiting piece 72, the limiting rod 73 passes through the threaded hole and extends into the working groove 61, a projection 732 is arranged on one end of the limiting rod 73 close to the limiting piece 72, the projection 732 is rotatably connected with the connecting groove 721 on the limiting piece 72, a threaded section is arranged on the outer peripheral wall of the limiting rod 73, the limiting rod 73 is in threaded connection with the threaded hole, a handle 731 is arranged on one end of the limiting rod 73 far from the projection 732, when the handle 731 is rotated, the limiting rod 73 moves forward along the axial direction, and the limiting rod 73 pushes the limiting piece 72, so that the limiting piece 72 is displaced to a position where limiting is required.

Referring to fig. 1 and 5, the lifting assembly 5 includes a motor 51, a rotating disc 52 and a swing arm 53, the motor 51 is located at the bottom center of the frame 1, an output shaft of the motor 51 is rotatably connected with the rotating disc 52, one end of the swing arm 53 is hinged with the rotating disc 52, the other end of the swing arm 53 is hinged with the sliding plate 4, and the swing arm 53 is hinged on the circumference of the rotating disc 52. The motor 51 is started, an output shaft of the motor 51 drives the rotating disc 52 to rotate, one end of the swing arm 53 is hinged to the rotating disc 52, when the rotating disc 52 rotates, one end of the swing arm 53 makes circular motion on the rotating disc 52, the swing arm 53 is a vertical long rod, the other end of the swing arm 53 can perform reciprocating motion in the vertical direction, and the motion range is the diameter length of the rotating disc 52.

Referring to fig. 1 and 2, oil inlet 83 and oil outlet 81 have been seted up on the lateral wall of frame 1, oil inlet 83 installs into oil pipe 82, oil outlet 80 is installed to oil outlet 81, it is the slope setting with oil pipe 82 to go into oil pipe 80, it passes oil inlet 83 and stretches into in the recess 42 that slides to go into oil pipe 82, oil pipe 80 passes oil outlet 81 and stretches into in the recess 42 that slides, when carrying out fatigue test to the spring, drip into lubricating oil from oil inlet 83, lubricating oil gets into the recess 42 that slides along oil pipe 82 into, lubricated recess 42 and connecting block 41 that slides, unnecessary lubricating oil flows out from oil outlet 81 along oil pipe 80, conveniently retrieve.

The implementation principle of the spring fatigue testing device in the embodiment of the application is as follows: when the spring needs to carry out fatigue test, swing arm 53 in lifting unit 5 swings to the bottom of rolling disc 52, start cylinder 2, piston rod 21 of cylinder 2 drives pressure disk 3 and rises along vertical direction, go into the work groove 61 of mount pad 6 with the spring mounting, the spring housing is established on stopper 71, rotate the handle 731 of gag lever post 73, gag lever post 73 promotes spacing piece 72 towards the horizontal displacement of 6 centre of a circle directions of mount pad, it is spacing to promote spacing piece 72 to spring week side, spacing piece 72 leaves the gap with the spring and does not influence the spring compression.

Starting the cylinder 2, the piston rod 21 of the cylinder 2 drives the pressure plate 3 to descend along the vertical direction until the upper end of the spring is just sleeved and abutted against the side surface of one side of the pressure plate 3 facing the ground, and the position of the pressure plate 3 is maintained unchanged.

The starting motor 51, the output shaft of motor 51 drives the rolling disc 52 and takes place to rotate, and swing arm 53 one end is articulated with rolling disc 52, and when rolling disc 52 rotated, the circular motion was done on rolling disc 52 to the one end of swing arm 53, and swing arm 53 is vertical stock, and the other end of swing arm 53 can carry out reciprocating motion along vertical direction to the spring compresses repeatedly constantly.

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 device, includes frame (1), its characterized in that: the automatic spring mounting device is characterized in that an air cylinder (2), a pressure plate (3), a sliding plate (4) and a lifting assembly (5) are arranged on the rack (1), the air cylinder (2) is mounted at the top of the rack (1), a piston rod (21) of the air cylinder (2) is arranged vertically downwards, the pressure plate (3) is mounted on the piston rod (21) of the air cylinder (2), the lifting assembly (5) is mounted at the bottom of the rack (1), the sliding plate (4) is connected onto the lifting assembly (5), a mounting seat (6) is arranged on one side, close to the pressure plate, of the sliding plate (4), a threaded hole is formed in the mounting seat (6), a working groove (61) for mounting a spring is formed in the mounting seat (6), a limiting assembly (7) is arranged in the working groove (61), and the limiting assembly (7) comprises a limiting block (71), a limiting piece (72) and a limiting rod (73), stopper (71) fixed mounting is in work groove (61), gag lever post (73) pass the screw hole and stretch into in work groove (61), spacing piece (72) rotate to be installed in gag lever post (73) stretch into the tip in work groove (61).

2. A spring fatigue testing device according to claim 1, wherein: the limiting piece (72) is provided with a connecting groove (721), the limiting rod (73) is provided with a threaded section, the limiting rod (73) is in threaded connection with the threaded hole, the limiting rod (73) is fixedly connected with a handle (731), one end, away from the handle (731), of the limiting rod (73) is provided with a convex block (732), and the convex block (732) is rotatably connected with the connecting groove (721).

3. A spring fatigue testing device according to claim 1, wherein: frame (1) both sides have been seted up and have been slided recess (42), slide plate (4) both ends fixedly connected with connecting block (41), connecting block (41) slide and connect in sliding recess (42).

4. A spring fatigue testing device according to claim 1, wherein: the lifting assembly (5) comprises a motor (51), a rotating disc (52) and a swing arm (53), the motor (51) is fixedly connected to the bottom of the rack (1), an output shaft of the motor (51) is connected with the rotating disc (52), one end of the swing arm (53) is hinged to the rotating disc (52), and the other end of the swing arm (53) is hinged to the sliding plate (4).

5. A spring fatigue testing device according to claim 1, wherein: the vertical rod (31) is arranged on one side, close to the sliding plate (4), of the pressure plate (3), and the vertical rod (31) is located right above the limiting block (71).

6. A spring fatigue testing device according to claim 5, wherein: the vertical rod (31) is in a circular truncated cone shape, and the diameter of the vertical rod (31) is gradually reduced from one end close to the pressure plate (3) to one end far away from the pressure plate (3).

7. A spring fatigue testing device according to claim 3, wherein: the upper end of recess (42) slides is provided with into oil pipe (82), the lower extreme of recess (42) slides is provided with oil outlet pipe (80), oil inlet hole (83) have been seted up to the upper end of recess (42) slides, install in oil inlet hole (83) oil inlet pipe (82) and with external intercommunication, oil inlet pipe passes in oil inlet hole (83) and stretches into in the recess (42) that slides, oil outlet hole (81) have been seted up to the lower extreme of recess (42) slides, install in oil outlet hole (81) oil outlet pipe (80) and with external intercommunication, oil outlet pipe (80) pass oil outlet hole (81) and stretch into in the recess (42) that slides.

8. A spring fatigue testing device according to claim 7, wherein: the oil inlet pipe (82) and the oil outlet pipe (80) are obliquely arranged.