CN114060379B

CN114060379B - Cotter pin

Info

Publication number: CN114060379B
Application number: CN202111355627.5A
Authority: CN
Inventors: 陈诚
Original assignee: Chaozhou Electric Power Design Office; Guangdong Power Grid Co Ltd; Chaozhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Chaozhou Electric Power Design Co ltd; Guangdong Power Grid Co Ltd; Chaozhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2023-06-02
Anticipated expiration: 2041-11-16
Also published as: CN114060379A

Abstract

The invention belongs to the technical field of temperature detection, and discloses a cotter pin which comprises a connecting rod, a first pin body and a temperature sensing piece. The first pin body comprises a first support arm, the first support arm is provided with a first support arm first end and a first support arm second end, the first support arm first end is connected to the connecting rod, the first support arm second end is arranged at intervals with the connecting rod, a connecting line between the first support arm first end and the first support arm second end forms an included angle with the connecting rod, when the cotter pin is matched with the through hole, the first support arm can be clung to the inner wall of the through hole, and the cotter pin can be fixed in the through hole. The temperature sensing piece is connected to the connecting rod, and the temperature sensing piece adopts the thermochromic material to make for detect the temperature of the surrounding environment near the cotter pin, the temperature of fastener maintenance personnel can judge the fastener just through observing the colour of temperature sensing piece.

Description

Cotter pin

Technical Field

The invention relates to the technical field of temperature detection, in particular to a cotter pin.

Background

The wire clamp is an important component of a high-voltage transmission line and is used for clamping one or more power cables. The wire clamp is easy to generate heat under the influence of the power cable, and the temperature of the wire clamp needs to be detected in daily maintenance so as to discover the heat generating defect in time and overhaul.

At present, the main method for checking the heating defect is to use an infrared thermometer for detection, but the problems are that: the transmission line is generally higher from the ground, and the infrared thermometer has limited precision when performing remote measurement, and can cause inaccurate measurement results.

Thus, there is a need for a cotter pin that solves the above-mentioned problems.

Disclosure of Invention

The invention provides a cotter pin, which can be matched with a through hole of a matching piece and can detect the temperature of the surrounding environment of the cotter pin.

In order to achieve the above purpose, the invention adopts the following technical scheme:

a cotter pin, comprising:

a connecting rod;

the first pin body comprises a first support arm, the first support arm is provided with a first support arm first end and a first support arm second end, the first support arm first end is connected with the connecting rod, the first support arm second end and the connecting rod are arranged at intervals, and a connecting line between the first support arm first end and the first support arm second end forms an included angle with the connecting rod;

the temperature sensing piece is connected with the connecting rod and is made of a thermochromic material.

As a preferable mode of the cotter, the first support arms are provided in plurality, and the plurality of first support arms are provided at intervals along the circumferential direction of the connecting rod.

As a preferable mode of the cotter pin, a plurality of the first support arms are integrally provided, the first pin body has a threaded hole, a plurality of the first support arm first ends are connected to each other, the threaded hole is provided at a connection portion of the plurality of the first support arm first ends, and the first pin body is screwed to the connecting rod.

As a preferable embodiment of the cotter pin, the cotter pin further includes a first stopper and a second stopper, the first stopper and the second stopper are respectively disposed on the connecting rod and can be abutted against the first pin, and the first pin is located between the first stopper and the second stopper.

As a preferable mode of the cotter pin, the first arm includes a cantilever and a fitting portion connected to the cantilever, a first end of the first arm is located on the cantilever, a second end of the first arm is located on the fitting portion, the cantilever and the connecting rod are disposed at an angle, and the fitting portion and the connecting rod are disposed at intervals.

As a preferable mode of the cotter, the first pin body further includes a first tail portion, the first tail portion is arc-shaped and has a first tail portion first end and a first tail portion second end, the first tail portion first end is connected to the assembling portion, and the first tail portion second end is far away from the connecting rod relative to the first tail portion first end.

As a preferable scheme of the cotter pin, the cotter pin further comprises a second pin body, the second pin body comprises a second support arm, the second support arm is provided with a first end of the second support arm and a second end of the second support arm, the first end of the second support arm is connected with the connecting rod, the second end of the second support arm is arranged at intervals with the connecting rod, a connecting line between the first end of the second support arm and the second end of the second support arm forms an included angle with the connecting rod, and the first pin body is positioned between the second pin body and the temperature sensing piece.

As a preferable mode of the cotter pin, a plurality of second support arms are provided, and the plurality of second support arms are arranged at intervals along the circumferential direction of the connecting rod.

As a preferable mode of the cotter pin, the second pin body further includes a second tail portion, the second tail portion is arc-shaped and has a second tail portion first end and a second tail portion second end, the second tail portion first end is connected to the second arm second end, and the second tail portion second end is far away from the connecting rod relative to the second tail portion first end.

Preferably, the first arm second end is spaced from the second pin body relative to the first arm first end, and the second arm first end is spaced from the first pin body relative to the second arm second end.

The beneficial effects of the invention are as follows:

the first end of the first support arm is connected to the connecting rod, and an included angle is formed between a connecting line between the first end of the first support arm and the second end of the first support arm and the connecting rod, so that the second end of the first support arm is far away from the connecting rod relative to the first end of the first support arm, and when the cotter pin is matched with the through hole, the first support arm can be clung to the inner wall of the through hole, and the cotter pin can be fixed in the through hole. In addition, set up the temperature sensing spare at the connecting rod for detect the temperature of the surrounding environment of cotter pin, and the temperature sensing spare adopts the thermochromic material to make, just through observing the colour of temperature sensing spare can judge the temperature of fastener. Through setting up the temperature sensing spare on detachable split pin, make the fastener need not to install temperature detection equipment additional, conveniently change the temperature sensing spare simultaneously.

Drawings

FIG. 1 is a schematic front view of a cotter in accordance with a first embodiment of the invention;

FIG. 2 is a schematic side view of a second pin according to a first embodiment of the present invention;

FIG. 3 is a schematic side view of a first pin according to a first embodiment of the present invention;

FIG. 4 is a schematic view of a temperature sensing element and a mounting base according to a first embodiment of the present invention;

fig. 5 is a schematic front view of a cotter in a second embodiment of the invention.

In the figure:

1. a first pin body; 11. a first arm; 111. a cantilever; 112. an assembling portion; 12. a first tail;

2. a second pin body; 21. a second arm; 22. a second tail;

3. a temperature sensing member; 31. a mounting base;

4. a connecting rod;

51. a first limiting member; 52. and the second limiting piece.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Example 1

A fastener for centre gripping power cable often can appear generating heat the phenomenon, and at present detect the temperature detection to the fastener and mainly use infrared thermometer to detect, but the problem that exists is: the transmission line is generally higher from the ground, and the infrared thermometer has limited precision when performing remote measurement, and can cause inaccurate measurement results.

Fig. 1 is a front view schematically showing a cotter according to an embodiment of the present invention, and referring to fig. 1, since bolts are required for fixing and installing a wire clip, and the cotter is generally required for installing the bolts, in order to solve the above-mentioned problem, the present embodiment provides a cotter, which detects the ambient temperature by providing a temperature sensing element on the cotter, and further detects the temperature of the wire clip, and can be used in the technical field of temperature detection.

With continued reference to fig. 1, the cotter comprises a connecting rod 4, on which connecting rod 4 a temperature sensing element 3, a first pin body 1 and a second pin body 2 are arranged. Wherein the first pin body 1 is intended to cooperate with a through hole of a bolt. The temperature sensing piece 3 is connected to the connecting rod 4 and is made of a temperature sensing color-changing material, the temperature sensing color-changing material controls the color change by utilizing the temperature difference, and a user can judge the temperature of the environment near the temperature sensing piece 3 by remotely observing the color of the temperature sensing piece 3 so as to judge the temperature of the wire clamp. In addition, because the cotter pin is detachably connected with the bolt of the wire clamp, the temperature sensing piece 3 is arranged on the cotter pin, so that the wire clamp does not need to be additionally provided with temperature detection equipment, and meanwhile, the temperature sensing piece 3 is convenient to replace. Optionally, the color-changing interval of the selected thermochromic material is-15 ℃ to 65 ℃.

With continued reference to fig. 1, the first pin body 1 includes a first support arm 11, including a first support arm 11, where the first support arm 11 has a first support arm first end and a first support arm second end, where the first support arm first end is connected to the connecting rod 4, and the first support arm second end is spaced from the connecting rod 4, and a connecting line between the first support arm first end and the first support arm second end forms an included angle with the connecting rod 4, so that the first support arm second end is far away from the connecting rod 4 relative to the first support arm first end, so that when the cotter pin is matched with the through hole. When the distance between the second end of the first support arm and the connecting rod 4 is greater than the width of the through hole, the assembly process of the first pin body 1 is as follows: the first end of the first support arm firstly enters the through hole, and along with the continuous entering of the first support arm into the through hole, before the second end of the first support arm enters the through hole, the first support arm 11 can be attached to the inner wall of the through hole, so that the cotter pin can be fixed in the through hole.

With continued reference to fig. 1, the second pin body 2 includes a second support arm 21, the second support arm 21 has a first end of the second support arm and a second end of the second support arm, the first end of the second support arm is connected to the connecting rod 4, the second end of the second support arm is spaced from the connecting rod 4, a connecting line between the first end of the second support arm and the second end of the second support arm forms an included angle with the connecting rod 4, the first pin body 1 is located between the second pin body 2 and the temperature sensing piece 3, and in this embodiment, the second pin body 2 and the temperature sensing piece 3 are respectively fixed at two ends of the connecting rod 4. The second arm 21 extends along a straight line, and in this embodiment, the second pin body 2 has a limiting function to prevent the cotter pin from falling off the through hole by itself. When the distance between the second end of the second support arm and the connecting rod 4 is greater than the width of the through hole, the assembly process of the second pin body 2 is as follows: the second pin body 2 enters the through hole from the first end of the second support arm at first, then the second pin body 2 is continuously moved, so that the second end of the second support arm penetrates through the through hole, after penetrating through the through hole, the second end of the second support arm is restored to the initial shape, and under the condition that the second support arm is not influenced by external force, the second end of the second support arm can prevent the cotter pin from falling off from the through hole. If the cotter pin is required to be disassembled, the second end of the second support arm is only required to be pressed by hands, so that the distance between the second end of the second support arm and the connecting rod 4 is smaller than the width of the through hole, and then the second pin body 2 is pulled out of the through hole along the reverse direction of the assembly process.

With continued reference to fig. 1, the second end of the first support arm is far away from the second pin body 2 relative to the first end of the first support arm, and the first end of the second support arm is far away from the first pin body 1 relative to the second end of the second support arm, so that the inclination directions of the first pin body 1 and the second pin body 2 are consistent, the use habit is met, and the installation and the disassembly are convenient.

Fig. 2 is a schematic side view of the second pin body 2 according to the embodiment of the present invention, and referring to fig. 1 to 2, a plurality of second support arms 21 are provided, and a plurality of second support arms 21 are disposed at intervals along the circumferential direction of the connecting rod 4, so that the plurality of second support arms 21 can be simultaneously stressed when the second pin body 2 is assembled. In this embodiment, the distance between the second ends of the two second arms that are furthest apart is greater than the diameter of the through hole, so as to perform the limiting function.

With continued reference to fig. 1-2, the second pin body 2 further includes a second tail 22, where the second tail 22 is arc-shaped and has a second tail first end and a second tail second end, the second tail first end is connected to the second arm second end, and the second tail second end is far away from the connecting rod 4 relative to the second tail first end. Through setting up second afterbody 22, after installation is accomplished to second pin body 2, when the second afterbody second end bumps the bolt at through-hole place, second afterbody 22 can play the cushioning effect, prevents the direct atress of second support arm second end, simultaneously because second afterbody second end is kept away from connecting rod 4 for second afterbody first end, has strengthened the spacing effect of second pin body 2. In addition, when the second pin body 2 is mounted, the second end of the second arm contacts the inner wall of the through hole, and then the second tail 22 is close to the inner wall of the through hole, so that the second tail 22 can smoothly enter the through hole due to the arc shape.

Fig. 3 shows a schematic side view of the first pin body 1 in an embodiment of the invention. Referring to fig. 1 and 3, the plurality of first arms 11 are provided, and the plurality of first arms 11 are provided at intervals along the circumferential direction of the connecting rod 4. When the first pin body 1 is assembled, the plurality of first support arms 11 are stressed simultaneously, and after the installation is completed, the plurality of first support arms 11 are clung to the inner wall of the through hole simultaneously, so that the assembly is completed, and the connection is more stable.

With continued reference to fig. 1 and 3, a plurality of first arms 11 are integrally provided, the first pin 1 has a threaded hole, and the first pin 1 is screwed to the connecting rod 4. Alternatively, the second pin body 2, the first pin body 1 and the temperature sensing element 3 are arranged at intervals, and the first pin body 1 can be adjusted by screw threads to be in contact with the second pin body 2 or in contact with the temperature sensing element 3. In this embodiment, the connecting rod 4 is a screw, the first pin body 1 is in threaded connection with the connecting rod 4, after the assembly of the first pin body 1 and the through hole is completed, a user can rotate the connecting rod 4 according to actual conditions to adjust the positions of the second pin body 2 and the temperature sensing piece 3 relative to the first pin body 1, so that the temperature sensing piece 3 is located at a position suitable for detecting temperature.

With continued reference to fig. 1 and 3, the cotter further includes a first limiting member 51 and a second limiting member 52, where the first limiting member 51 and the second limiting member 52 are respectively disposed on the connecting rod 4 and can abut against the first pin body 1, and the first pin body 1 is located between the first limiting member 51 and the second limiting member 52. The first limiting piece 51 and the second limiting piece 52 perform a limiting function on the first pin body 1, so that the first pin body 1 can only move at a position between the first limiting piece 51 and the second limiting piece 52 on the connecting rod 4.

With continued reference to fig. 1 and 3, the first arm 11 includes a cantilever 111 and a mounting portion 112, a first end of the first arm is located at the cantilever 111, a second end of the first arm is located at the mounting portion 112, the cantilever 111 and the lianjiegan 4 form an included angle, and the mounting portion 112 is spaced from the connecting rod 4. Alternatively, the assembling portion 112 extends along a straight line, and after the first arm 11 is mounted on the through hole, the assembling portion 112 is parallel to the connecting rod 4, and meanwhile, the assembling portion 112 can be completely attached to the through hole, so that the fit between the first pin body 1 and the through hole is more stable.

With continued reference to fig. 1 and 3, the first pin body 1 further includes a first tail 12, where the first tail 12 is arc-shaped and has a first tail first end and a first tail second end, the first tail first end is connected to the assembly portion, and the first tail second end is far away from the connecting rod 4 relative to the first tail first end. After the assembly portion 112 is mounted on the through hole, if the movement position of the assembly portion 112 is too many, the arc-shaped structure of the first tail portion 12 can play a transitional role after the assembly portion also enters the through hole, so that a subsequent user can conveniently adjust the position of the assembly portion 112. At the same time, the first tail portion 12 can also play a certain limiting role on the movement of the fitting portion 112 in the direction of the first tail portion 12.

Fig. 4 shows a schematic structural view of the temperature sensing element 3 and the mounting base 31 in the embodiment of the present invention. The mount pad 31 is connected in connecting rod 4, and temperature sensing spare 3 installs in mount pad 31, optionally, temperature sensing spare 3 can dismantle with mount pad 31 and be connected, conveniently changes temperature sensing spare 3.

The following describes the method of using the cotter according to the present embodiment in detail with reference to fig. 1 to 4:

it should be noted that the distance between the second ends of the two second arms that are furthest apart should be greater than the diameter of the through hole, and the distance between the two fitting portions 112 that are furthest apart should be equal to or slightly greater than the diameter of the through hole. During assembly, one end of the second pin body 2 firstly enters the through hole, namely the first end of the second support arm enters the through hole, the second pin body 2 continues to move, and when the second support arm 21 abuts against the inner wall of the through hole, the second support arm continues to move until the second end of the second support arm and the second tail 22 completely pass through the through hole.

Then, the first pin 1 is assembled, the first pin 1 is first moved, the cantilever 111 is made to enter the through hole, the assembly part 112 is made to enter the through hole, and after the assembly parts 112 of the plurality of first support arms 11 are attached to the inner walls of the through hole, the movement is stopped. The positions of the first pin body 1 and the temperature sensing element 3 are adjusted so that the temperature sensing element 3 is at a proper temperature detection position.

Example two

This embodiment provides a cotter that is substantially identical to the cotter of embodiment one, except that: the shape of the connecting rod 4 and the structure of the hole of the first pin body 1 for matching with the connecting rod 4 are different, and the first limiting piece 51 and the second limiting piece 52 are respectively in threaded connection with the connecting rod 4.

Fig. 5 shows a schematic front view of a cotter in an embodiment of the invention. Referring to fig. 5, in the present embodiment, the connecting rod 4 is cylindrical, the first pin body 1 is slidably sleeved on the connecting rod 4, and when a user needs to adjust the position of the second pin body 2 or the temperature sensing element 3 relative to the first pin body 1, the user only needs to move the first pin body 1 along the length direction of the connecting rod 4, and rotate the first limiting member 51 and the second limiting member 52 to make the first limiting member 51 and the second limiting member 52 abut against the first pin body 1 respectively, so as to limit the position of the first pin body 1.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. A cotter, characterized by comprising:

a connecting rod (4);

the first pin body (1) comprises a first support arm (11), the first support arm (11) is provided with a first support arm first end and a first support arm second end, the first support arm first end is connected with the connecting rod (4), the first support arm second end and the connecting rod (4) are arranged at intervals, and an included angle is formed between a connecting line between the first support arm first end and the first support arm second end and the connecting rod (4);

the temperature sensing piece (3) is connected to the connecting rod (4), and the temperature sensing piece (3) is made of a thermochromic material;

the cotter pin further comprises a second pin body (2), the second pin body (2) comprises a second support arm (21), the second support arm (21) is provided with a second support arm first end and a second support arm second end, the second support arm first end is connected with the connecting rod (4), the second support arm second end and the connecting rod (4) are arranged at intervals, an included angle is formed between a connecting line between the second support arm first end and the second support arm second end and the connecting rod (4), and the first pin body (1) is positioned between the second pin body (2) and the temperature sensing piece (3);

the first support arms (11) are arranged in a plurality, and the first support arms (11) are arranged at intervals along the circumferential direction of the connecting rod (4); the first support arms (11) are integrally arranged, the first pin body (1) is provided with a threaded hole, the first ends of the first support arms are mutually connected, the threaded hole is formed in the joint of the first ends of the first support arms, and the first pin body (1) is in threaded connection with the connecting rod (4);

after the assembly of the first pin body (1) is completed, a user can rotate the connecting rod (4) according to actual conditions to adjust the positions of the second pin body (2) and the temperature sensing piece (3) relative to the first pin body (1), so that the temperature sensing piece (3) is positioned at a position suitable for detecting temperature.

2. The cotter according to claim 1, further comprising a first stop (51) and a second stop (52), the first stop (51) and the second stop (52) being arranged on the connecting rod (4) and being capable of abutting the first pin body (1), respectively, the first pin body (1) being located between the first stop (51) and the second stop (52).

3. Cotter according to claim 1, characterized in that the first arm (11) comprises a mounting portion (112) to which the cantilever (111) is connected, the first arm first end being located at the cantilever (111), the first arm second end being located at the mounting portion (112), the cantilever (111) being arranged at an angle to the connecting rod (4), the mounting portion (112) being arranged at a distance from the connecting rod (4).

4. A cotter according to claim 3, characterized in that the first pin body (1) further comprises a first tail portion (12), the first tail portion (12) being circular-arc-shaped and having a first tail first end and a first tail second end, the first tail first end being connected to the mounting portion, the first tail second end being remote from the connecting rod (4) relative to the first tail first end.

5. Cotter according to claim 1, characterized in that the second support arm (21) is provided in plurality, and the plurality of second support arms (21) are arranged at intervals in the circumferential direction of the connecting rod (4).

6. Cotter according to claim 1, characterized in that the second pin body (2) further comprises a second tail (22), the second tail (22) being circular-arc-shaped and having a second tail first end and a second tail second end, the second tail first end being connected to the second arm second end, the second tail second end being remote from the connecting rod (4) with respect to the second tail first end.

7. Cotter according to claim 1, characterized in that the first arm second end is remote from the second pin body (2) relative to the first arm first end and the second arm first end is remote from the first pin body (1) relative to the second arm second end.