Spring fatigue testing machine

Abstract

The utility model relates to a spring fatigue testing machine which comprises a rack, a bottom plate and a top plate are arranged on the rack, a pushing plate is slidably mounted on the rack, a driving part is arranged on the rack, mounting plates are arranged at the positions, on the two sides of the pushing plate, of the rack, limiting rods are arranged on the pushing plate, and the limiting rods are slidably connected with the mounting plates. The spring piece is arranged on the limiting rod in a sleeving mode and located between the mounting plate and the pushing plate, a lantern ring is arranged on the pushing plate, and a fixing piece is arranged on the mounting plate; the spring piece is arranged on the limiting rod in a sleeving mode and placed at the lantern ring of the pushing plate, the fixing piece on the mounting plate fixes one end of the spring piece, after mounting is completed, the driving piece drives the pushing plate to slide, the pushing plate drives the limiting rod to slide on the mounting plate when sliding, and the spring piece is limited and fixed through the limiting rod and the fixing piece; the fixing effect of the spring piece is good, and the effect that the spring piece is not prone to falling off is achieved.

Description

Technical Field

[0001] The present application relates to the field of spring fatigue testing equipment, and in particular to a spring fatigue testing machine. Background Art

[0002] Spring fatigue characteristics are an important indicator of the quality of springs. They refer to the fracture phenomenon of springs after being squeezed and deformed. Generally, metals will produce cracks after deformation. They are usually very small and sometimes even negligible. However, if they are deformed frequently, the cracks will increase and the crack gaps will increase, eventually leading to spring fatigue. The spring fatigue testing machine mainly performs fatigue tests on springs by compressing the springs to obtain the fatigue characteristics of the tested springs, so that the appropriate springs can be used correctly in different applications.

[0003] In the related technology, reference can be made to the Chinese utility model patent with authorization announcement number CN203772537U, which discloses a spring fatigue testing machine, including a cylinder, a control center, a lower base plate, and an upper pressure plate. The lower base plate is provided with a sliding guide rod, and the upper pressure plate is provided with a through hole compatible with the sliding guide rod. The other end of the sliding guide rod connected to the lower base plate is provided with a support plate, the cylinder is provided on the support plate, and the cylinder output shaft is fixedly connected to the upper pressure plate. A plurality of grooves for placing springs are provided on one side of the lower base plate opposite to the upper pressure plate, and the plurality of grooves are evenly distributed on the lower base plate, aiming to provide a spring fatigue testing machine with a simple structure, which can perform fatigue tests on multiple springs at the same time and has high detection efficiency.

[0004] In the above-mentioned related technologies, the spring part is only fixed by the groove. During the test, the spring part is compressed multiple times. After being compressed, the simply fixed spring part is easy to fall off from the spring fatigue testing machine due to its elasticity, resulting in poor test results. Utility Model Content

[0005] In order to solve the problem that a simply fixed spring part is easy to fall off from a spring fatigue testing machine after being compressed, resulting in poor testing effect, the present application provides a spring fatigue testing machine.

[0006] The spring fatigue testing machine provided in this application adopts the following technical solution:

[0007] A spring fatigue testing machine comprises a frame, a bottom plate and a top plate are provided on the frame, a push plate is slidably installed on the frame at a position between the top plate and the bottom plate, a driving member for driving the push plate to slide is provided on the frame, mounting plates are provided on the frame at both sides of the push plate, a limit rod is provided on the push plate, the limit rod is slidably connected to the mounting plate, a spring member is sleeved on the limit rod and is located between the mounting plate and the push plate, a ring is provided on the push plate, and a fixing member is provided on the mounting plate.

[0008] By adopting the above technical solution, the spring part is sleeved on the limit rod and placed on the collar of the push plate, and the fixing part on the mounting plate fixes one end of the spring part. After installation, the driving part drives the push plate to slide, and when the push plate slides, the limit rod is driven to slide on the mounting plate. The spring part is limited and fixed by the limit rod and the fixing part, and the fixing effect of the spring part is better, and the problem of the spring part falling off is not easy to occur.

[0009] Optionally, a clamping member is provided on the limiting rod at the collar, and the clamping member includes a first spring and a clamping plate, the first spring is provided at the circumferential side wall of the limiting rod, and the clamping plate is provided at an end of the first spring away from the limiting rod.

[0010] By adopting the above technical solution, when one end of the spring member is placed inside the collar, the first spring pushes the clamping sheet to press against the inner ring side wall of the spring member, and the spring member is not easy to shake when pressed.

[0011] Optionally, the retaining piece is arranged in an arc shape.

[0012] By adopting the above technical solution, the arc-shaped clamping piece fits against the inner ring side wall of the spring component, and the clamping effect is better.

[0013] Optionally, a guide plate is provided on one side of the abutting piece, and the guide plate is inclined.

[0014] By adopting the above technical solution, the spring part slides along the inclined guide plate, which facilitates the installation and removal of the spring part.

[0015] Optionally, the fixing member includes a fixing ring and a pressure block, the fixing ring is arranged on one side surface of the mounting plate, a bottom block is arranged on the inner side of the fixing ring, the pressure block is slidably installed on one side of the fixing ring, a first screw is arranged on the fixing ring, and the pressure block is rotatably connected to one end of the first screw.

[0016] By adopting the above technical solution, one end of the spring part is placed in the fixing ring and located on the bottom block. The first screw is rotated to drive the pressing block to move to one side of the spring part to fix the spring part. The operation of fixing the spring part is more convenient.

[0017] Optionally, an adjustment mechanism is provided on the frame, and the adjustment mechanism includes a second screw and an adjustment motor. The second screw is rotatably mounted on the frame, the adjustment motor is arranged on the frame, the second screw is connected to the output shaft of the adjustment motor, and the mounting plate is slidably mounted on the frame and threadedly connected to the second screw.

[0018] By adopting the above technical solution, the adjusting motor drives the second screw to rotate and then drives the mounting plate to slide downward, the distance between the mounting plate and the pushing plate is adjusted and then the compression amount of the spring component is adjusted, which is suitable for fatigue testing of different spring components.

[0019] Optionally, the second screw rod is provided with two opposite sections of threads, and the upper and lower mounting plates are threadedly connected to the second screw rod at the two sections of threads respectively.

[0020] By adopting the above technical solution, the second screw is rotated to drive the upper and lower mounting plates to move relative to or oppositely, and the positions of the two mounting plates are adjusted at the same time, and the adjustment operation is relatively convenient.

[0021] Optionally, a limiting block is provided at one end of the limiting rod away from the pushing plate, and a rubber ring is provided on one side of the limiting block.

[0022] By adopting the above technical solution, a rubber ring is arranged on one side of the limit block to reduce the probability of the limit rod detaching from the mounting plate when moving.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The spring part is sleeved on the limit rod and placed on the collar. The first screw is rotated to push the pressing block to fix one end of the spring part. The driving part drives the pushing plate to slide. When the pushing plate slides, the limit rod is driven to slide on the mounting plate. The spring part is fixed by the limit rod and the fixing part. The fixing effect of the spring part is better, and the problem of the spring part falling off is not easy to occur.

[0025] 2. One end of the spring is placed inside the collar, and the first spring pushes the tightening sheet to press against the inner ring side wall of the spring. When tightening, the spring is not easy to shake;

[0026] 3. The driving motor drives the second screw to rotate and then drives the mounting plate to move, adjusts the distance between the mounting plate and the push plate, and then adjusts the compression amount of the spring component, which is suitable for fatigue testing of different spring components. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of this application.

[0028] Figure 2 It is a cross-sectional view of the present application along the vertical direction.

[0029] Figure 3 It is an enlarged cross-sectional view of part B of the present application.

[0030] Figure 4 It is a three-dimensional structural schematic diagram of the fixing member on the mounting plate of the present application.

[0031] Figure 5 It is an enlarged cross-sectional view of part A of the present application.

[0032] Those skilled in the art will appreciate that the elements in the drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be magnified relative to other elements to help improve understanding of the embodiments of the present invention.

[0033] 1. Frame; 11. Bottom plate; 12. Top plate; 13. Connecting column; 2. Pushing plate; 21. Limiting rod; 211. Limiting block; 212. Rubber ring; 22. Sleeve ring; 3. Driving member; 31. Driving motor; 32. Turntable; 33. Connecting rod; 4. Mounting plate; 41. Through hole; 5. Spring member; 6. Fixing member; 61. Fixing ring; 611. Bottom block; 6111. Bottom groove; 612. Groove; 62. Pressing block; 621. Pressing groove; 63. First screw; 7. Tightening member; 71. First spring; 72. Tightening sheet; 73. Guide plate; 8. Adjusting mechanism; 81. Second screw; 82. Adjusting motor. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings.

[0035] The present application embodiment discloses a spring fatigue testing machine, referring to Figure 1 and Figure 2 , including a frame 1, on which a bottom plate 11 and a top plate 12 are arranged, the bottom plate 11 and the top plate 12 are both arranged horizontally, four connecting columns 13 are vertically arranged between the bottom plate 11 and the top plate 12, and a push plate 2 is slidably installed at a position between the bottom plate 11 and the top plate 12 on the frame 1, and the push plate 2 is horizontally arranged and slidably connected to the connecting column 13.

[0036] Reference Figure 1 and Figure 2 A driving member 3 is provided on the frame 1, and the driving member 3 includes a driving motor 31 and a turntable 32. The driving motor 31 is arranged on the bottom plate 11, and the turntable 32 is arranged at the output shaft of the driving motor 31. A connecting rod 33 is provided on the turntable 32, and one end of the connecting rod 33 is rotatably connected to the turntable 32, and the end of the connecting rod 33 away from the turntable 32 is rotatably connected to the pushing plate 2 toward the next side. The driving motor 31 drives the turntable 32 to rotate and drives the connecting rod 33 to move, and the connecting rod 33 pushes the pushing plate 2 at one end to slide up and down.

[0037] Reference Figure 1 and Figure 2, mounting plates 4 are provided on the frame 1 at the upper and lower sides of the pushing plate 2, the mounting plates 4 are arranged horizontally, and limit rods 21 are vertically arranged on the upper and lower side surfaces of the pushing plate 2, a through hole 41 is opened on the mounting plate 4, one end of the limit rod 21 passes through the through hole 41 and is located on one side of the mounting plate 4, the spring member 5 is sleeved on the limit rod 21 and is located between the mounting plate 4 and the pushing plate 2, a collar 22 is provided on the pushing plate 2 at the limit rod 21, the collar 22 is coaxially arranged with the limit rod 21, a fixing member 6 is provided on the mounting plate 4, the spring member 5 is sleeved on the limit rod 21 and placed on the collar 22 of the pushing plate 2, the fixing member 6 fixes one end of the spring member 5, the fixing effect of the spring member 5 is good, and the problem of the spring member 5 falling off is not easy to occur.

[0038] Reference Figure 3 and Figure 4 The fixing member 6 includes a fixing ring 61 and a pressing block 62. The fixing ring 61 is arranged on one side of the mounting plate 4 facing the pushing plate 2. The fixing ring 61 is coaxially arranged with the through hole 41. One end of the spring member 5 is located on the inner side of the fixing ring 61. A bottom block 611 is arranged at the inner side of the fixing ring 61. A bottom groove 6111 is arranged on the bottom block 611. One end of the spring member 5 is located at the bottom groove 6111 of the bottom block 611. The fixing ring 61 is located at one side of the bottom block 611 and a groove 612 is arranged at the inner side wall. The pressing block 62 is slidably installed at the groove 612 of the fixing ring 61. A pressing groove 621 is arranged on one side of the pressing block 62. When the pressing block 62 is located at one side of the bottom block 611, the spring member 5 is located at the pressing groove 621 of the pressing block 62. A first screw rod 63 is vertically threadedly installed on the fixing ring 61 , and the pressing block 62 is rotatably connected to one end of the first screw rod 63 . Rotating the first screw rod 63 drives the pressing block 62 to move to one side of the spring member 5 to fix the spring member 5 .

[0039] Reference Figure 5 , a tightening piece 7 is arranged on the limit rod 21 at the collar 22, and the tightening piece 7 includes a first spring 71 and a tightening sheet 72. One end of the first spring 71 is connected to the circumferential side wall of the limit rod 21, and the tightening sheet 72 is slidably installed on one side of the push plate 2. The tightening sheet 72 is connected to one end of the first spring 71 away from the limit rod 21. When one end of the spring member 5 is placed on the inner side of the collar 22, the first spring 71 pushes the tightening sheet 72 to press against the inner ring side wall of the spring member 5, and the spring member 5 is not easy to shake. The tightening sheet 72 is arranged in an arc shape, and the arc-shaped tightening sheet 72 fits the inner ring side wall of the spring member 5, and the tightening effect is better. A guide plate 73 is arranged on the upper side of the tightening sheet 72, and the guide plate 73 is distributed along the tightening sheet 72. The guide plate is arranged obliquely, and the spring member 5 slides along the inclined guide plate 73, which is convenient for the installation and removal of the spring member 5.

[0040] Reference Figure 1 and Figure 2An adjusting mechanism 8 is provided on the frame 1, and the adjusting mechanism 8 includes a second screw 81 and an adjusting motor 82. The second screw 81 is vertically arranged on the frame 1 and is rotatably connected to the bottom plate 11 and the top plate 12. The adjusting motor 82 is arranged on the top plate 12, and the second screw 81 is connected to the output shaft of the adjusting motor 82. The mounting plate 4 is slidably connected to the connecting column 13, and the mounting plate 4 is threadedly connected to the second screw 81. The adjusting motor 82 drives the second screw 81 to rotate, drives the mounting plate 4 to slide up and down, adjusts the distance between the mounting plate 4 and the pushing plate 2, and then adjusts the compression amount of the spring member 5, which is suitable for fatigue testing of different spring members 5.

[0041] Reference Figure 2 The second screw 81 is provided with two opposite threads, and the upper and lower mounting plates 4 are respectively threadedly connected to the second screw 81 at the two threads. When the second screw 81 rotates, the positions of the two mounting plates 4 are adjusted simultaneously. A limit block 211 is provided at one end of the limit rod 21 away from the push plate 2, and a rubber ring 212 is provided on one side of the limit block 211 to reduce the probability of the limit rod 21 being separated from the mounting plate 4 when moving.

[0042] The implementation principle of a spring fatigue testing machine in an embodiment of the present application is as follows: during installation, the spring component 5 is sleeved on the limiting rod 21, one end of the spring component 5 is placed on the bottom block 611 of the fixing ring 61, and the first screw rod 63 is rotated to drive the pressing block 62 to move to the bottom block 611 to fix one end of the spring component 5, and the end of the spring component 5 facing away from the mounting plate 4 is placed on the sleeve ring 22, and the first spring 71 on the limiting rod 21 pushes the tightening plate 72 to tighten the spring component 5. After installation, the driving motor 31 drives the turntable 32 to drive the connecting rod 33 to move, and the connecting rod 33 drives the pushing plate 2 to slide up and down to perform fatigue testing on the spring component 5.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A spring fatigue testing machine, comprising a frame (1), wherein the frame (1) is provided with a bottom plate (11) and a top plate (12), wherein a push plate (2) is slidably mounted on the frame (1) between the top plate (12) and the bottom plate (11), and wherein a driving member (3) for driving the push plate (2) to slide is provided on the frame (1), wherein: The frame (1) is provided with mounting plates (4) at both sides of the push plate (2); the push plate (2) is provided with a limit rod (21); the limit rod (21) is slidably connected to the mounting plate (4); a spring member (5) is sleeved on the limit rod (21) and is located between the mounting plate (4) and the push plate (2); a collar (22) is provided on the push plate (2); and a fixing member (6) is provided on the mounting plate (4).

2. A spring fatigue testing machine according to claim 1, characterized in that: A retaining member (7) is provided on the limiting rod (21) at the collar (22), the retaining member (7) comprising a first spring (71) and a retaining plate (72), the first spring (71) being provided at the circumferential side wall of the limiting rod (21), the retaining plate (72) being provided at an end of the first spring (71) facing away from the limiting rod (21).

3. A spring fatigue testing machine according to claim 2, characterized in that: The abutting piece (72) is arranged in an arc shape.

4. A spring fatigue testing machine according to claim 2, characterized in that: A guide plate (73) is provided on one side of the abutting plate (72), and the guide plate (73) is arranged obliquely.

5. A spring fatigue testing machine according to claim 1, characterized in that: The fixing member (6) comprises a fixing ring (61) and a pressing block (62); the fixing ring (61) is arranged on a side surface of the mounting plate (4); a bottom block (611) is arranged inside the fixing ring (61); the pressing block (62) is slidably mounted on one side of the fixing ring (61); a first screw rod (63) is arranged on the fixing ring (61); and the pressing block (62) is rotatably connected to one end of the first screw rod (63).

6. A spring fatigue testing machine according to claim 1, characterized in that: The frame (1) is provided with an adjustment mechanism (8), the adjustment mechanism (8) comprising a second screw (81) and an adjustment motor (82), the second screw (81) being rotatably mounted on the frame (1), the adjustment motor (82) being arranged on the frame (1), the second screw (81) being connected to an output shaft of the adjustment motor (82), and the mounting plate (4) being slidably mounted on the frame (1) and being threadably connected to the second screw (81).

7. A spring fatigue testing machine according to claim 6, characterized in that: The second screw rod (81) is provided with two opposite threads, and the upper and lower mounting plates (4) are threadedly connected to the second screw rod (81) at the two threads, respectively.

8. A spring fatigue testing machine according to claim 1, characterized in that: A limiting block (211) is provided at one end of the limiting rod (21) away from the pushing plate (2), and a rubber ring (212) is provided on one side of the limiting block (211).

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