CN218725254U

CN218725254U - Spring life detection device

Info

Publication number: CN218725254U
Application number: CN202222736324.4U
Authority: CN
Inventors: 何红涛; 陈土标
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-03-24
Anticipated expiration: 2032-10-17

Abstract

The utility model provides a spring life-span detection device, include: the spring detection device comprises a mounting seat, an assembling cavity is arranged in the center of the mounting seat, a plurality of limiting channels extending along the radial direction of the assembling cavity are formed in the cavity wall of the assembling cavity, a guiding pressure rod partially extending into the assembling cavity is arranged inside one end, close to the assembling cavity, of each limiting channel, and the guiding pressure rod can limit a spring to be detected in the limiting channel; and the cam mechanism is arranged in the assembly cavity, and the peripheral surface of a cam of the cam mechanism is contacted with the end parts of the guide compression rods so as to deform each spring to be detected by extruding each guide compression rod when rotating. Based on the technical scheme of the utility model, utilize cam mechanism to construct and carry out life-span test's detection device to the spring, can once only detect a plurality of springs to cam mechanism need not any extra control once to constantly repeatedly accomplish many times to the deformation drive of spring, and the detection efficiency of whole device is high, easy and simple to handle.

Description

Spring life detection device

Technical Field

The utility model relates to a spring check out test set technical field relates to a spring life-span detection device very much.

Background

The spring is an important part in many mechanical devices, and the service life and fatigue strength of the spring seriously affect the normal use of the device, such as a pump spring in a compressor. Taking the pump spring of the compressor as an example, the fatigue life test of the common compressor pump spring is carried out along with the fatigue life test of the compressor, so that the interference factors are more, only one pump spring can be detected, and the test cost is high.

Most of other current technical schemes for separately detecting the spring can only detect one or a small number of springs, and the detection efficiency is not high; most of the existing detection devices simply adopt a linear motion mechanism to extrude or compress a spring, so that the direction control of the linear motion mechanism is involved, and the detection devices need additional control and are relatively complex; the above problems are present in, for example, patent application publication No. CN 106124181A.

Therefore, the utility model aims at providing a can detect a plurality of springs simultaneously and need not the spring life-span detection device of extra complicated control.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem that can't detect a plurality of springs simultaneously and need extra control operation for solving detection device existence among the prior art, the utility model provides a spring life-span detection device.

In a first aspect, the utility model provides a spring life-span detection device, include:

the spring detection device comprises a mounting seat, wherein an assembly cavity is formed in the center of the mounting seat, a plurality of limiting channels extending along the radial direction of the assembly cavity are formed in the cavity wall of the assembly cavity, a guiding pressure rod partially extending into the assembly cavity is arranged inside one end, close to the assembly cavity, of each limiting channel, and the guiding pressure rod can limit a spring to be detected in the limiting channel; and

the cam mechanism is arranged in the assembly cavity, and the outer peripheral surface of a cam of the cam mechanism is in contact with the end parts of the guide compression rods so as to deform the springs to be detected by pressing the guide compression rods when rotating.

In one embodiment, a plurality of the limiting channels are distributed on the wall of the assembly cavity along the circumferential direction of the assembly cavity.

In one embodiment, the limiting channel penetrates through the mounting seat, a limiting part is arranged inside one end, far away from the assembly cavity, of the limiting channel, and the guide pressure rod and the limiting part can respectively abut against two ends of the spring to be detected so as to limit the spring to be detected in the limiting channel.

In one embodiment, the limiting member comprises a rod part and a head part, the rod part can be assembled into the limiting channel and is in threaded connection with the limiting channel, the size of the head part is larger than the inner diameter of the limiting channel, and the head part can abut against a channel opening of the limiting channel after the rod part is assembled into the limiting channel.

In one embodiment, a middle section between two ends of the guide pressure lever is provided with a limit groove extending along the length direction of the guide pressure lever, a first connecting piece is arranged in the limit groove, a second connecting piece extending into the limit groove is arranged on the wall surface of the limit channel, the first connecting piece and the second connecting piece are opposite to each other, and the second connecting piece is positioned between the first connecting piece and the assembly cavity;

the spring to be detected can be placed in the limiting groove and located between the first connecting piece and the second connecting piece, and the first connecting piece and the second connecting piece can be respectively and fixedly connected with two ends of the spring to be detected.

In one embodiment, the connecting piece is a connecting column or a connecting clamping piece, the connecting column can be hooked with the hook of the end part of the spring to be detected, and the connecting clamping piece can be inserted between two adjacent rings of the end part of the spring to be detected.

In one embodiment, the mounting seat is further provided with an observation port at the position of the limiting channel, the observation port is communicated with the limiting channel and an external environment, and the observation port is a long strip extending along the extending direction of the limiting channel.

In one embodiment, the width of the viewing port is less than the inner diameter of the spacing channel.

In one embodiment, an end surface of one end portion of the guide compression bar contacting with the outer peripheral surface of the cam is a convex cambered surface structure.

In one embodiment, the device further comprises a base, the base is used for installing the installation seat, and the base and the installation seat are respectively provided with a connecting hole.

The above-mentioned technical characteristics can be combined in various suitable ways or replaced by equivalent technical characteristics as long as the purpose of the invention can be achieved.

The utility model provides a pair of spring life-span detection device compares with prior art, possesses following beneficial effect at least:

the utility model discloses a spring life detection device, the utility model discloses utilize cam mechanism to construct and carry out the detection device of life-span test to the spring, can once only detect a plurality of springs to cam mechanism need not any extra control once to constantly repeatedly accomplish many times to the deformation drive of spring, and the detection efficiency of whole device is high, easy and simple to handle.

Drawings

The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:

fig. 1 shows a cross-sectional view of the overall structure of the detection device of the present invention;

FIG. 2 shows a top view of the structure shown in FIG. 1;

fig. 3 shows an assembly diagram of the guiding pressure bar and the spring with another structure of the invention;

fig. 4 shows a schematic structural diagram of the locating part of the present invention.

In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.

Reference numerals:

1. a mounting seat; 11. an assembly chamber; 12. an observation port; 2. a limiting channel; 21. a second connecting member; 3. a guide pressure lever; 31. a limiting groove; 311. a first connecting member; 4. a cam mechanism; 41. a cam; 42. a motor; 5. a spring to be detected; 6. a limiting member; 61. a rod portion; 62. a head portion; 7. a base.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Example 1

An embodiment of the utility model provides a spring life-span detection device, include:

the spring detection device comprises a mounting seat 1, wherein an assembly cavity 11 is formed in the center of the mounting seat 1, a plurality of limiting channels 2 extending along the radial direction of the assembly cavity 11 are formed in the cavity wall of the assembly cavity 11, a guiding pressure rod 3 partially extending into the assembly cavity 11 is arranged inside one end, close to the assembly cavity 11, of each limiting channel 2, and the guiding pressure rod 3 can limit a spring 5 to be detected in each limiting channel 2;

the cam mechanism 4 is arranged in the assembly cavity 11, the peripheral surface of a cam 41 of the cam mechanism 4 is contacted with the end part of the guide compression bar 3, so that each spring 5 to be detected is deformed by pressing each guide compression bar 3 when rotating; and

the base 7, base 7 are used for installing mount pad 1, have seted up the connecting hole on base 7 and the mount pad 1 respectively.

Specifically, as shown in fig. 1, the detection device of the present invention is mainly structured around the cam mechanism 4. Firstly, an assembly cavity 11 for installing the cam mechanism 4 is constructed in the center of the installation seat 1, a plurality of limiting channels 2 are constructed in the positions, corresponding to the cam 41 of the cam mechanism 4, of the cavity wall of the assembly cavity 11, and are used for placing the spring 5 to be detected, and power transmission between the cam 41 and the spring 5 to be detected is realized through the guide pressure rod 3.

In use, referring to fig. 1 and 2 of the drawings, the detection of the compression spring is taken as an example. The cam 41 (which may be a runner having a protrusion on the circumferential surface or a common runner eccentrically disposed) is driven by the motor 42 to rotate, so that the protrusion of the cam 41 contacts and presses the corresponding guide pressure rod 3 during the rotation process, and then the guide pressure rod 3 is reset under the elastic force of the compression spring, so as to perform the detection in a reciprocating manner. The number of times the compression spring is compressed can be converted by the rotational speed of the cam 41 and the test time. Referring to fig. 1 of the drawings, the compression spring at the upper left corner is opposite to the relatively convex part of the cam 41 and is compressed to the shortest length, length a; the pressure spring at the upper right corner is restored to the relatively longest length, namely the length B; the difference between length a and length B is a relative compressed length that can be achieved by adjusting the relative height of the raised portion of cam 41.

It can be seen that the utility model discloses utilize cam mechanism 4 to construct and carry out the detection device who tests to the spring, can once only detect a plurality of springs to cam mechanism 4 need not any extra control once to start and can constantly be repeated to accomplish many times to the deformation drive of spring, and the detection efficiency of whole device is high, easy and simple to handle. And each spring independently generates deformation, and the plurality of springs are not interfered with each other.

Further, a plurality of limiting channels 2 are distributed on the wall of the assembly cavity 11 along the circumferential direction of the assembly cavity 11. Referring to fig. 2 of the drawings, a plurality of position limiting channels 2 are distributed on the wall of the assembly chamber 11 in the rotation direction of the cam 41, so that the space utilization can be maximized and the number of springs to be detected can be increased as much as possible. In addition, referring to fig. 1 of the drawings, a plurality of limiting channels 2 may be further provided, specifically, a plurality of layers of limiting channel 2 structures are distributed in the height direction of the assembly cavity 11 in fig. 1 (only one layer of limiting channel 2 structure is currently in fig. 1). Preferably, the spacing channels 2 in the structure of two adjacent layers of spacing channels 2 are staggered with each other in the rotation direction of the cam 41, which facilitates the structural design and the construction of the spacing channels 2.

Further, the limiting channel 2 penetrates through the mounting base 1, and a limiting part 6 is arranged inside one end, far away from the assembly cavity 11, of the mounting base, and the guide pressing rod 3 and the limiting part 6 can abut against two ends of the to-be-detected spring 5 respectively so as to limit the to-be-detected spring 5 in the limiting channel 2. Referring to the attached drawing fig. 1, the limiting channel 2 is constructed in a penetrating structure, that is, a channel opening at one end of the limiting channel 2 is communicated with the outside, so that in order to facilitate the installation of the spring, the spring can be loaded into the limiting channel 2 through the channel opening, and then the limiting part 6 is loaded into the limiting channel 2, so that the spring can be limited and detected by matching with the guide compression rod 3.

Further, the limiting member 6 comprises a rod part 61 and a head part 62, the rod part 61 can be assembled into the limiting channel 2 and is in threaded connection with the limiting channel 2, the size of the head part 62 is larger than the inner diameter of the limiting channel 2, and the head part 62 can abut against the channel opening of the limiting channel 2 after the rod part 61 is assembled into the limiting channel 2. Referring to fig. 4 of the drawings, the limiting member 6 is in a bolt-like structure, a rod part 61 of the limiting member is used for limiting the spring, and a head part 62 of the limiting member is used for limiting the assembly depth of the limiting member 6 and the limiting channel 2.

Further, the mounting base 1 is further provided with an observation port 12 at the position of the limiting channel 2, the observation port 12 is communicated with the limiting channel 2 and the external environment, and the observation port 12 is a long strip extending along the extending direction of the limiting channel 2. The width of viewing aperture 12 is less than the internal diameter of spacing passageway 2, avoids the spring to deviate from spacing passageway 2 by viewing aperture 12. Referring to fig. 1 and 2 of the drawings, the observation port 12 penetrates through the limiting channel 2, so that a tester can observe the test condition of the spring in the limiting channel 2.

Further, the end face of one end part of the guide pressure lever 3 contacting with the outer peripheral surface of the cam 41 is a convex cambered surface structure. Referring to fig. 1 and 2, the arc (spherical) end contacts the circumferential surface of the cam 41 of the cam mechanism 4, which effectively reduces the friction force.

Example 2

This embodiment is a further improvement on the basis of embodiment 1, and please refer to embodiment 1 for part of the same contents, which is not described again in this embodiment.

the spring detection device comprises a mounting seat 1, wherein an assembly cavity 11 is formed in the center of the mounting seat 1, a plurality of limiting channels 2 extending along the radial direction of the assembly cavity 11 are formed in the cavity wall of the assembly cavity 11, a guiding pressure rod 3 partially extending into the assembly cavity 11 is arranged inside one end, close to the assembly cavity 11, of each limiting channel 2, and the guiding pressure rod 3 can limit a spring 5 to be detected in the limiting channel 2;

the base 7 is used for installing the installation seat 1, and the base 7 and the installation seat 1 are respectively provided with a connecting hole which is used as a foundation of the whole device;

the middle section between the two ends of the guide compression bar 3 is provided with a limiting groove 31 extending along the length direction of the guide compression bar, a first connecting piece 311 is arranged in the limiting groove 31, the wall surface of the limiting channel 2 is provided with a second connecting piece 21 extending into the limiting groove 31, the first connecting piece 311 and the second connecting piece 21 are opposite to each other, and the second connecting piece 21 is positioned between the first connecting piece 311 and the assembling cavity 11;

the spring 5 to be detected can be placed in the position between the first connecting piece 311 and the second connecting piece 21 in the limiting groove 31, and the first connecting piece 311 and the second connecting piece 21 can be respectively and fixedly connected with two ends of the spring 5 to be detected.

Specifically, the attached drawing that refers to fig. 3, the institutional advancement of this embodiment is mainly in order to make the utility model discloses a detection device can further be used for the detection of extension spring, utilizes to construct spacing groove 31 on direction depression bar 3, waits to detect the extension spring and can place in spacing groove 31, and its one end passes through first connecting piece 311 and direction depression bar 3 relatively fixed, and the other end passes through second connecting piece 21 and spacing passageway 2 relatively fixed. Therefore, when the cam 41 rotates, the guiding pressure lever 3 can drive one end of the tension spring to move away from one end of the tension spring which is fixed relative to the limiting channel 2 through the first connecting piece 311, so that the tension spring is stretched, and then the guiding pressure lever 3 resets under the action of the elastic force of the tension spring so as to perform reciprocating detection.

Further, the connecting piece is the spliced pole or connects the card, and the spliced pole can articulate with the couple of waiting to detect 5 tip of spring, connects the card and can insert to waiting to detect between the adjacent two rings of 5 tip of spring. Referring to the connecting card used in the connecting member shown in fig. 3, the connecting card can be directly inserted into a position (a position corresponding to the pitch) between two circles of structures at the end of the spring 5 to be detected, and can be directly connected. To the spring 5 (extension spring) that detects that the tip has the couple, can set up the spliced pole that can articulate with the couple with the connecting piece.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims

1. A spring life detection device, comprising:

2. The spring life detection device according to claim 1, wherein a plurality of limiting channels are distributed on the wall of the assembly cavity along the circumferential direction of the assembly cavity.

3. The spring life detection device according to claim 1, wherein the limiting channel penetrates through the mounting seat, a limiting member is disposed inside one end of the limiting channel, which is far away from the assembly cavity, and the guide compression bar and the limiting member can respectively abut against two ends of the spring to be detected so as to limit the spring to be detected in the limiting channel.

4. The spring life detection device according to claim 3, wherein the limiting member includes a rod portion and a head portion, the rod portion is capable of being assembled into the limiting channel and is in threaded connection with the limiting channel, the head portion is larger than an inner diameter of the limiting channel, and the head portion is capable of abutting against a channel opening of the limiting channel after the rod portion is assembled into the limiting channel.

5. The spring life detection device according to claim 1, wherein a limiting groove extending along the length direction is formed in a middle section between two ends of the guide pressure lever, a first connecting piece is arranged in the limiting groove, a second connecting piece extending into the limiting groove is arranged on a wall surface of the limiting channel, the first connecting piece and the second connecting piece are opposite to each other, and the second connecting piece is located between the first connecting piece and the assembly cavity;

6. The spring life detection device according to claim 5, wherein the connecting piece is a connecting column or a connecting clamping piece, the connecting column can be hooked with the hook of the end portion of the spring to be detected, and the connecting clamping piece can be inserted between two adjacent rings of the end portion of the spring to be detected.

7. The spring life detection device according to any one of claims 1 to 6, wherein the mounting seat is further provided with a viewing port at the limiting channel, the viewing port communicates the limiting channel with an external environment, and the viewing port is in a long strip shape extending along an extending direction of the limiting channel.

8. The spring life detection device of claim 7, wherein the width of the viewing port is less than the inner diameter of the limiting channel.

9. The spring life detection device according to any one of claims 1 to 6, wherein an end face of one end portion of the guide pressure lever contacting with the outer peripheral surface of the cam is a convex arc-shaped structure.

10. The spring life detection device according to any one of claims 1 to 6, further comprising a base, wherein the base is used for mounting the mounting seat, and the base and the mounting seat are respectively provided with a connecting hole.