Spring fatigue test tool and spring fatigue test equipment

Abstract

The utility model discloses a spring fatigue test tool and spring fatigue test equipment, the spring fatigue test tool comprises a tool body and a guide column, the tool body comprises an upper abutting piece and a lower abutting piece, any one of the upper abutting piece and the lower abutting piece is provided with the guide column, and the other one forms a hole channel; the upper abutting piece and the lower abutting piece are detachably connected through the guide column, the spring is assembled in the mode that the guide column is sleeved with the spring, the two ends of the spring abut against the upper abutting piece and the lower abutting piece respectively, and at the moment, the guide column is inserted into the hole channel. The upper abutting piece and the lower abutting piece can be freely pushed to move in a reciprocating mode so as to repeatedly increase or decrease the distance between the upper abutting piece and the lower abutting piece, so that the spring is repeatedly compressed, and meanwhile the inserting depth of the guide column and the hole channel is repeatedly adjusted. In the process, the deformation direction of the spring is limited by the guide column, the spring is always kept in a vertical state, and the situation that the test effect is influenced by bending deformation of the spring is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fatigue testing, in particular to a spring fatigue testing tool and a spring fatigue testing device. Background Art

[0002] After the spring is processed, in order to fully understand the quality of the spring, it is usually necessary to conduct multiple tests, including fatigue testing. At present, when performing fatigue testing on springs, the spring is directly placed between the pressure plate and the pad of the spring fatigue testing equipment, and the pressure plate and / or the pad are controlled to move back and forth to reduce or increase the distance between the two, and this is repeated, so that the spring is repeatedly compressed, so as to perform fatigue testing.

[0003] In this process, since the deformation direction of the spring is not limited, the spring will bend and deform under pressure, which affects the results of the spring fatigue test and reduces the effectiveness and authenticity of the test. Utility Model Content

[0004] In order to solve the above technical problems and achieve at least one advantage of the utility model, the utility model provides a spring fatigue test tool, the spring fatigue test tool comprising:

[0005] A tool body, the tool body comprising an upper abutment and a lower abutment, the upper abutment and the lower abutment are arranged opposite to each other;

[0006] A guide column, either the upper abutment or the lower abutment is installed with the guide column and the other forms a channel, the size of the channel is adapted to the size of the guide column, and the diameter of the guide column is adapted to the size of the inner diameter of the spring, the upper abutment and the lower abutment are detachably connected through the guide column, the spring is assembled in a manner of being sleeved on the guide column and having both ends abutted against the upper abutment and the lower abutment respectively, at this time the guide column is inserted into the channel, the upper abutment and the lower abutment can be pushed and moved back and forth at will to repeatedly increase or decrease the distance between the two, so that the spring is repeatedly compressed, and at the same time the insertion depth of the guide column and the channel is repeatedly adjusted.

[0007] According to one embodiment of the utility model, the guide column is installed on the upper abutment, and the channel is formed in the lower abutment. When the upper abutment moves relative to the lower abutment to increase or decrease the distance between the two, the guide column is driven by the upper abutment to move in the channel.

[0008] According to one embodiment of the utility model, the lower abutment includes a lower abutment body and a connecting portion, the lower abutment body is detachably arranged on the outside of the connecting portion and forms the channel together with the connecting portion, and the upper abutment is detachably arranged on the side of the lower abutment body away from the connecting portion through the guide column, and when the spring is assembled on the spring fatigue testing tooling, the guide column is inserted into the channel formed in the lower abutment body.

[0009] According to an embodiment of the utility model, the size of the channel formed in the lower abutment body is adapted to the size of the guide column, and the size of the channel formed in the connecting portion is larger than the size of the guide column.

[0010] According to an embodiment of the present invention, the guide column and the upper abutment member are integrally formed.

[0011] According to an embodiment of the utility model, the guide column is detachably connected to the upper abutment member.

[0012] In order to solve the above technical problems and achieve at least one advantage of the present invention, the present invention provides a spring fatigue testing device, the spring fatigue testing device comprising:

[0013] At least one spring fatigue testing tool;

[0014] A fatigue testing device, the fatigue testing device includes a device body and a testing mechanism, the testing mechanism includes a testing assembly, the testing assembly includes a first abutment and at least one second abutment, the first abutment and the second abutment are distributed up and down and are both installed on the device body, at least one spring fatigue testing tool is placed between the first abutment and the second abutment, the first abutment and the second abutment are arbitrarily driven to slide on the surface of the device body to increase or decrease the distance between the two, so as to drive the upper abutment and the lower abutment to move arbitrarily to perform fatigue testing on the spring abutting between the two and sleeved on the guide column.

[0015] According to an embodiment of the utility model, two second abutment members are provided, the first abutment member is provided between the two second abutment members, at least two spring fatigue testing fixtures are provided, the second abutment member and the first abutment member located at the bottom respectively carry at least one spring fatigue testing fixture, and the first abutment member can be driven to slide between the two second abutment members to simultaneously perform fatigue tests on the springs respectively assembled on at least two spring fatigue testing fixtures.

[0016] According to an embodiment of the present invention, the testing mechanism further comprises a driving assembly, the first abutment member is mounted on the driving assembly and can be driven by the driving assembly to slide on the surface of the device body.

[0017] According to one embodiment of the utility model, the driving assembly includes a driving member, a turntable and a connecting rod, the turntable is installed on the driving member and can be driven by the driving member to rotate, the connecting rod is rotatably installed on the side of the turntable away from the driving member, and the connection between the connecting rod and the turntable deviates from the rotation center of the turntable, one end of the connecting rod away from the turntable is rotatably connected to the first abutment member, the turntable is located in the sliding direction of the first abutment member, and the rotating turntable can push and pull the first abutment member through the connecting rod to slide back and forth on the surface of the device body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The schematic structural diagram of the spring fatigue testing tool of the utility model is shown.

[0019] Figure 2 The structure sectional view of the spring fatigue testing tool of the utility model is shown.

[0020] Figure 3 The structural explosion diagram of the spring fatigue testing tool of the utility model is shown.

[0021] Figure 4 The schematic diagram of the structure of the spring fatigue testing device of the utility model is shown.

[0022] Figure 5 Shows Figure 4 A magnified view of the local structure.

[0023] Figure 6 A structural sectional view of the spring fatigue testing device of the utility model is shown. DETAILED DESCRIPTION

[0024] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0025] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0026] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0027] refer to Figures 1 to 3 , a spring fatigue test fixture according to a preferred embodiment of the utility model will be described in detail below, the spring fatigue test fixture includes a fixture body 10 and a guide column 20, the fixture body 10 includes an upper abutment 11 and a lower abutment 12, the upper abutment 11 and the lower abutment 12 are arranged relatively to each other, one of the upper abutment 11 and the lower abutment 12 is installed with the guide column 20 and the other forms a channel 101, the size of the channel 101 is adapted to the size of the guide column 20, and the diameter of the guide column 20 is adapted to the size of the inner diameter of a spring. The upper abutment 11 and the lower abutment 12 are detachably connected through the guide column 20, and the guide column 20 can be pulled out of the channel 101 along the direction in which the lower abutment 12 extends toward the upper abutment 11 to separate the upper abutment 11 and the lower abutment 12. The spring is assembled on the spring fatigue test fixture in a manner of being sleeved on the guide column 20 and having its two ends respectively abutting against the upper abutment 11 and the lower abutment 12. At this time, the guide column 20 is inserted into the channel 101. The upper abutment 11 and the lower abutment 12 can be pushed and moved back and forth at will to repeatedly increase or decrease the distance between them, thereby repeatedly compressing the spring, and at the same time, the insertion depth of the guide column 20 and the channel 101 is repeatedly adjusted. In this process, the deformation direction of the spring is limited by the guide column 20 and always maintains a vertical state. Compared with the prior art, it effectively avoids the bending and deformation of the spring that affects the test effect, thereby improving the effectiveness and authenticity of the test.

[0028] Preferably, the guide post 20 is mounted on the upper abutment 11, and the channel 101 is formed in the lower abutment 12. When the upper abutment 11 moves relative to the lower abutment 12 to increase or decrease the distance between the two, the guide post 20 is driven by the upper abutment 11 to move in the channel 101.

[0029] refer to Figures 2 to 3 Furthermore, the lower abutment 12 includes a lower abutment body 121 and a connecting portion 122, and the lower abutment body 121 is detachably arranged on the outside of the connecting portion 122 and forms the channel 101 together with the connecting portion 122. The upper abutment 11 is detachably arranged on the side of the lower abutment body 121 away from the connecting portion 122 through the guide column 20. When the spring is assembled on the spring fatigue test fixture, the guide column 20 is inserted into the channel 101 formed in the lower abutment body 121. In this way, the spring fatigue test fixture can be circulated in a manner in which the upper abutment 11 is separated from the lower abutment 12, and the lower abutment body 121 is separated from the connecting portion 122, so as to reduce the overall volume, so that the transportation and storage costs can be reduced as much as possible.

[0030] It is worth mentioning that the size of the channel 101 formed in the lower abutment body 121 is adapted to the size of the guide column 20, and the size of the channel 101 formed in the connecting portion 122 is larger than the size of the guide column 20. In this way, before fatigue testing the springs with different apertures, the matching lower abutment body 121 and the guide column 20 are replaced according to the aperture of the spring, so that the springs with different apertures share a set of tooling, which greatly saves production costs.

[0031] Preferably, the guide post 20 is integrally formed with the upper abutment 11. Thus, when assembling with the springs of different apertures, the guide post 20 and the upper abutment 11 are replaced as a whole while replacing the lower abutment body 121.

[0032] As a deformable method, the guide column 20 is detachably connected to the upper abutment 11. In this way, when assembling with the springs of different apertures, the lower abutment body 121 and the guide column 20 can be replaced.

[0033] refer to Figures 4 to 6Based on the spring fatigue test fixture disclosed in the above embodiment, the utility model also discloses a spring fatigue test device, which includes at least one spring fatigue test fixture and a fatigue test device. The fatigue test device includes a device body 30 and a test mechanism 40, and the test mechanism 40 includes a test assembly 41, and the test assembly 41 includes a first abutment 411 and at least one second abutment 412, and the first abutment 411 and the second abutment 412 are distributed up and down and are both installed on the device body 30. At least one spring fatigue test fixture is placed between the first abutment 411 and the second abutment 412, and the first abutment 411 and the second abutment 412 are arbitrarily driven to slide on the surface of the device body 30 to increase or reduce the distance between the two, so as to drive the upper abutment 11 and the lower abutment 12 to move arbitrarily to perform fatigue testing on the spring abutting between the two and sleeved on the guide column 20.

[0034] Preferably, two second abutting members 412 are provided, and the first abutting member 411 is provided between the two second abutting members 412. At least two spring fatigue test fixtures are provided, and the second abutting member 412 and the first abutting member 411 located at the bottom respectively carry at least one spring fatigue test fixture. The first abutting member 411 can be driven to slide between the two second abutting members 412 to simultaneously perform fatigue tests on the springs respectively assembled on at least two spring fatigue test fixtures.

[0035] refer to Figure 4 and Figure 6 Furthermore, the testing mechanism 40 also includes a driving assembly 42, the first abutment member 411 is installed on the driving assembly 42 and can be driven by the driving assembly 42 to slide on the surface of the device body 30, thereby providing power for the fatigue test.

[0036] The driving assembly 42 includes a driving member 421, a rotating disk 422 and a connecting rod 423. The rotating disk 422 is mounted on the driving member 421 and can be driven by the driving member 421 to rotate. The connecting rod 423 is rotatably mounted on a side of the rotating disk 422 away from the driving member 421, and the connection between the connecting rod 423 and the rotating disk 422 deviates from the rotation center of the rotating disk 422. One end of the connecting rod 423 away from the rotating disk 422 is rotatably connected to the first abutment 411. The rotating disk 422 is located in the sliding direction of the first abutment 411, and the rotating rotating disk 422 can push and pull the first abutment 411 through the connecting rod 423 to slide back and forth on the surface of the device body 30.

[0037] Preferably, the driving member 421 is implemented as a motor.

[0038] The device body 30 includes a main body portion 31 and a guide portion 32 . The guide portion 32 is installed between the main body portion 31 and the first abutment member 411 . The first abutment member 411 can be driven to slide along the guide portion 32 toward or away from the second abutment member 412 .

[0039] Preferably, the guide portion 32 is implemented as a guide rail.

[0040] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. Spring fatigue test tool, characterized in that: The spring fatigue testing tool comprises: A tool body, the tool body comprising an upper abutment and a lower abutment, the upper abutment and the lower abutment are arranged opposite to each other; A guide column, either the upper abutment or the lower abutment is installed with the guide column and the other forms a channel, the size of the channel is adapted to the size of the guide column, and the diameter of the guide column is adapted to the size of the inner diameter of the spring, the upper abutment and the lower abutment are detachably connected through the guide column, the spring is assembled in a manner of being sleeved on the guide column and having both ends abutted against the upper abutment and the lower abutment respectively, at this time the guide column is inserted into the channel, the upper abutment and the lower abutment can be pushed and moved back and forth at will to repeatedly increase or decrease the distance between the two, so that the spring is repeatedly compressed, and at the same time the insertion depth of the guide column and the channel is repeatedly adjusted.

2. The spring fatigue testing tool according to claim 1, characterized in that: The guide column is installed on the upper abutment, and the channel is formed in the lower abutment. When the upper abutment moves relative to the lower abutment to increase or decrease the distance between the two, the guide column is driven by the upper abutment to move in the channel.

3. The spring fatigue testing tool according to claim 2, characterized in that: The lower abutment member includes a lower abutment body and a connecting portion, wherein the lower abutment body is detachably arranged on the outside of the connecting portion and forms the channel together with the connecting portion, and the upper abutment member is detachably arranged on a side of the lower abutment body away from the connecting portion through the guide column, and when the spring is assembled on the spring fatigue testing fixture, the guide column is inserted into the channel formed in the lower abutment body.

4. The spring fatigue testing tool according to claim 3, characterized in that: The size of the hole formed in the lower abutment body is adapted to the size of the guide column, and the size of the hole formed in the connecting portion is larger than the size of the guide column.

5. The spring fatigue testing tool according to claim 4, characterized in that: The guide column and the upper abutment member are integrally formed.

6. The spring fatigue testing tool according to claim 4, characterized in that: The guide column is detachably connected to the upper abutment member.

7. Spring fatigue testing equipment, characterized in that, The spring fatigue testing equipment comprises: At least one spring fatigue testing device according to any one of claims 1 to 6; A fatigue testing device, the fatigue testing device includes a device body and a testing mechanism, the testing mechanism includes a testing assembly, the testing assembly includes a first abutment and at least one second abutment, the first abutment and the second abutment are distributed up and down and are both installed on the device body, at least one spring fatigue testing tool is placed between the first abutment and the second abutment, the first abutment and the second abutment are arbitrarily driven to slide on the surface of the device body to increase or decrease the distance between the two, so as to drive the upper abutment and the lower abutment to move arbitrarily to perform fatigue testing on the spring abutting between the two and sleeved on the guide column.

8. The spring fatigue testing device according to claim 7, characterized in that: There are two second abutment members, the first abutment member is arranged between the two second abutment members, and there are at least two spring fatigue testing fixtures. The second abutment member and the first abutment member located at the bottom respectively carry at least one spring fatigue testing fixture, and the first abutment member can be driven to slide between the two second abutment members to simultaneously perform fatigue tests on the springs respectively assembled on at least two spring fatigue testing fixtures.

9. The spring fatigue testing device according to claim 7 or 8, characterized in that: The testing mechanism further comprises a driving assembly, the first abutment member is mounted on the driving assembly and can be driven by the driving assembly to slide on the surface of the device body.

10. The spring fatigue testing device according to claim 9, characterized in that: The driving assembly includes a driving member, a turntable and a connecting rod. The turntable is installed on the driving member and can be driven by the driving member to rotate. The connecting rod is rotatably installed on a side of the turntable away from the driving member, and the connection between the connecting rod and the turntable deviates from the rotation center of the turntable. One end of the connecting rod away from the turntable is rotatably connected to the first abutment member. The turntable is located in the sliding direction of the first abutment member. The rotating turntable can push and pull the first abutment member through the connecting rod to slide back and forth on the surface of the device body.

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