CN114060379A

CN114060379A - Cotter pin

Info

Publication number: CN114060379A
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: 2022-02-18
Anticipated expiration: 2041-11-16
Also published as: CN114060379B

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 an interval with the connecting rod, a connecting line between the first support arm first end and the first support arm second end is an included angle with the connecting rod, and when the split pin is matched with the through hole, the first support arm can be tightly attached to the inner wall of the through hole, so that the split pin can be fixed in the through hole. The temperature sensing piece is connected in the connecting rod, and the temperature sensing piece adopts temperature sensing color-changing material to make for detect the temperature of the near environment of split pin, the temperature of fastener can be judged only through the colour of observing the temperature sensing piece to the fastener maintainer.

Description

Cotter pin

Technical Field

The invention relates to the technical field of temperature detection, in particular to a split 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. Receive the influence of electric power cable, the phenomenon of generating heat appears easily in the fastener, needs carry out the detection of fastener temperature in the middle of the routine maintenance to in time discover the defect of generating heat and overhaul.

At present, the main method for checking the heating defect is to use an infrared thermometer for detection, but the problems are as follows: the power transmission line is generally higher than the ground, and the accuracy is limited when the infrared thermometer is used for remote measurement, so that the measurement result is inaccurate.

Therefore, a split pin is needed to solve the above 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 purpose, the invention adopts the following technical scheme:

a cotter pin comprising:

a connecting rod;

a first pin body including a first support arm, the first support arm having a first support arm first end and a first support arm second end, the first support arm first end being connected to the connecting rod, the first support arm second end being spaced apart from the connecting rod, a connecting line between the first support arm first end and the first support arm second end forming an included angle with the connecting rod;

the temperature sensing piece is connected to the connecting rod and is made of temperature sensing color change materials.

In a preferred embodiment of the split pin, the first arm is provided in plurality, and the plurality of first arms are provided at intervals in a circumferential direction of the connecting rod.

In a preferred embodiment of the split pin, the plurality of first arms are integrally provided, the first pin body has a threaded hole, the first ends of the plurality of first arms are connected to each other, the threaded hole is provided at a connection point of the first ends of the plurality of first arms, and the first pin body is screwed to the connecting rod.

As a preferred embodiment of the split pin, the split pin further includes a first limiting member and a second limiting member, the first limiting member and the second limiting member are respectively disposed on the connecting rod and can abut against the first pin body, and the first pin body is located between the first limiting member and the second limiting member.

As a preferable mode of the cotter, the first support arm includes an assembling portion where a cantilever is connected to the cantilever, the first support arm first end is located at the cantilever, the first support arm second end is located at the assembling portion, the cantilever and the connecting rod are arranged at an included angle, and the assembling portion and the connecting rod are arranged at an interval.

As a preferable mode of the cotter, the first cotter 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 away from the connecting rod relative to the first tail portion first end.

As a preferred scheme of split pin, still include the second round pin body, above-mentioned second round pin body includes the second support arm, above-mentioned second support arm has second support arm first end and second support arm second end, above-mentioned second support arm first end is connected in above-mentioned connecting rod, above-mentioned second support arm second end sets up with above-mentioned connecting rod interval, the line between first end of above-mentioned second support arm and second end of second support arm is the contained angle with above-mentioned connecting rod, above-mentioned first round pin body is located between above-mentioned second round pin body and above-mentioned temperature sensing piece.

In a preferred embodiment of the split pin, the second arm is provided in plurality, and the second arms are provided at intervals in a circumferential direction of the connecting rod.

As a preferable aspect of the split 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 support arm second end, and the second tail portion second end is away from the connection rod relative to the second tail portion first end.

In a preferred embodiment of the split pin, the first arm second end is remote from the second pin body with respect to the first arm first end, and the second arm first end is remote from the first pin body with respect to the second arm second end.

The invention has the beneficial effects that:

the first end of the first support arm is connected to the connecting rod, a connecting line between the first end of the first support arm and the second end of the first support arm forms an included angle with the connecting rod, 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 therefore when the split pin is matched with the through hole, the first support arm can be tightly attached to the inner wall of the through hole, and the split pin can be fixed in the through hole. In addition, set up the temperature sensing piece at the connecting rod for detect the temperature of the near environment of split pin, and the temperature sensing piece adopts temperature sensing color change material to make, only can judge the temperature of fastener through the colour of observing the temperature sensing piece. Through set up the temperature sensing piece on detachable split pin, make the fastener need not to install temperature-detecting equipment again, conveniently change the temperature sensing piece simultaneously.

Drawings

FIG. 1 is a schematic front view of a cotter pin according to one embodiment of the present invention;

FIG. 2 is a side view of a second pin body in accordance with one embodiment of the present invention;

FIG. 3 is a schematic side view of a first pin body in accordance with one embodiment of the present invention;

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

fig. 5 is a schematic front view of a cotter pin according to a second embodiment of the present invention.

In the figure:

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

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

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

4. a connecting rod;

51. a first limit piece; 52. a second limiting member.

Detailed Description

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

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Example one

A phenomenon of generating heat often can appear in the fastener for centre gripping electric power cable, and detects mainly using infrared radiation thermometer to the temperature of fastener at present, but the problem that exists is: the power transmission line is generally higher than the ground, and the accuracy is limited when the infrared thermometer is used for remote measurement, so that the measurement result is inaccurate.

Fig. 1 is a schematic front view illustrating a cotter according to an embodiment of the present invention, and referring to fig. 1, since a bolt is required for fixing and installing a wire clamp, and a cotter is generally required for installing the bolt, in order to solve the above problem, the present embodiment provides a cotter, in which a temperature sensing element is disposed on the cotter to detect an ambient temperature, and further detect a temperature of the wire clamp, which can be used in the technical field of temperature detection.

With continued reference to fig. 1, the cotter pin includes a connecting rod 4, and a temperature sensing element 3, a first pin body 1, and a second pin body 2 are disposed on the connecting rod 4. 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 temperature sensing color-changing materials, the temperature sensing color-changing materials control color change by using 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 split pin is detachably connected with the bolt of the wire clamp, the temperature sensing element 3 is arranged on the split pin, so that the wire clamp does not need to be additionally provided with temperature detection equipment, and meanwhile, the temperature sensing element 3 is convenient to replace. Optionally, the color change 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 the first support arm 11, the first support arm 11 has 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 4, the first support arm second end is spaced from the connecting rod 4, 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, thereby 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 larger than the width of the through hole, the assembling 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.

Continuing to refer to fig. 1, the second pin 2 includes a second support arm 21, the second support arm 21 has a second support arm first end and a second support arm second end, the second support arm first end is connected to the connecting rod 4, the second support arm second end is spaced from the connecting rod 4, a connection line between the second support arm first end and the second support arm second end forms an included angle with the connecting rod 4, the first pin 1 is located between the second pin 2 and the temperature sensing member 3, in this embodiment, the second pin 2 and the temperature sensing member 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 functions as a limit to prevent the cotter pin from falling off from the through hole. When the distance between the second end of the second arm and the connecting rod 4 is larger than the width of the through hole, the assembling process of the second pin body 2 is as follows: the second pin body 2 firstly enters the through hole from the first end of the second support arm, then the second pin body 2 is continuously moved, the second end of the second support arm penetrates through the through hole, after the second end of the second support arm penetrates through the through hole, the second end of the second support arm returns to the original shape, and the second end of the second support arm can prevent the cotter pin from falling off from the through hole under the condition of not being influenced by external force. If the cotter pin needs to be disassembled, the second end of the second support arm is pressed by hand, 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 opposite direction of the assembling process.

With reference to fig. 1, the second end of the first arm is far away from the second pin 2 relative to the first end of the first arm, and the first end of the second arm is far away from the first pin 1 relative to the second end of the second arm, so that the first pin 1 and the second pin 2 have the same inclination direction, which is in accordance with the usage habit and is convenient for installation and disassembly.

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. 1-2, a plurality of second support arms 21 are provided, and the plurality of second support arms 21 are spaced 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 support arms which are farthest away 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 portion 22, the second tail portion 22 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 4 relative to the second tail portion first end. Through setting up second afterbody 22, accomplish the installation back at second round pin body 2, when the bolt at through-hole place was collided to second afterbody second end, second afterbody 22 can play the cushioning effect, prevents the direct atress of second support arm second end, because connecting rod 4 is kept away from for the first end of second afterbody to second afterbody second end simultaneously, has strengthened the limiting displacement of second round pin body 2. In addition, when the second pin body 2 is installed, after the second end of the second support arm contacts the inner wall of the through hole, the second tail part 22 is close to the inner wall of the through hole, and the second tail part 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 first arms 11 are provided in plurality, and the first arms 11 are spaced apart from each other in the circumferential direction of the connecting rod 4. When the first pin body 1 is assembled, the first support arms 11 are stressed simultaneously, after the installation is completed, the first support arms 11 are attached to the inner wall of the through hole simultaneously, the assembly is completed, and the connection is stable.

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

With reference to fig. 1 and fig. 3, the cotter further includes a first limiting member 51 and a second limiting member 52, 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 member 51 and the second limiting member 52 limit the first pin 1, so that the first pin 1 can only move between the first limiting member 51 and the second limiting member 52 on the connecting rod 4.

With continued reference to fig. 1 and 3, the first support arm 11 includes a cantilever 111 and an assembling portion 112, a first end of the first support arm is located at the cantilever 111, a second end of the first support arm is located at the assembling portion 112, the cantilever 111 and the lianjiegan 4 form an included angle, and the assembling portion 112 and the connecting rod 4 are arranged at an interval. Optionally, the assembling portion 112 extends along a straight line, after the first arm 11 is installed in 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 portion 12, the first tail portion 12 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 4 relative to the first tail portion first end. After the assembling portion 112 is mounted in the through hole, if the moving position of the assembling portion 112 is too much, the assembling portion also enters the through hole, and the arc-shaped structure of the first tail portion 12 can play a transition role, so that a subsequent user can conveniently adjust the position of the assembling portion 112. At the same time, the first tail portion 12 can also play a certain role in limiting the movement of the mounting portion 112 in the direction of the first tail portion 12.

Fig. 4 shows a schematic structural diagram of the temperature sensing element 3 and the mounting seat 31 in the embodiment of the present invention. The mounting seat 31 is connected to the connecting rod 4, the temperature sensing element 3 is mounted on the mounting seat 31, and optionally, the temperature sensing element 3 is detachably connected to the mounting seat 31, so that the temperature sensing element 3 is convenient to replace.

The method of using the cotter pin of the present embodiment is described in detail below with reference to fig. 1-4:

it should be noted that the distance between the second ends of the two second arms at the farthest distance should be larger than the diameter of the through hole, and the distance between the two assembly portions 112 at the farthest distance should be equal to or slightly larger than the diameter of the through hole. During assembly, the second pin 2 is continuously moved from the first end of the second pin 2 into the through hole, i.e. the first end of the second arm enters into the through hole, and the second arm 21 is continuously moved after abutting against the inner wall of the through hole until the second end of the second arm and the second tail 22 completely pass through the through hole.

And then assembling the first pin body 1, firstly moving the first pin body 1 to enable the cantilever 111 to enter the through hole and further enable the assembling part 112 to enter the through hole, and stopping moving after the assembling parts 112 of the plurality of first support arms 11 are attached to the inner wall of the through hole. The positions of the first pin body 1 and the temperature sensing element 3 are adjusted to enable the temperature sensing element 3 to be in a proper temperature detection position.

Example two

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

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

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A cotter pin, 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 to the connecting rod (4), the first support arm second end and the connecting rod (4) 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 (4);

the temperature sensing piece (3) is connected to the connecting rod (4), and the temperature sensing piece (3) is made of a temperature sensing color-changing material.

2. Cotter pin according to claim 1, characterised in that the first leg (11) is provided in a plurality, the first legs (11) being arranged at intervals in the circumferential direction of the connecting rod (4).

3. Cotter pin according to claim 2, characterized in that a plurality of the first arms (11) are provided in one piece, that the first pin body (1) has a threaded hole, that a plurality of the first arms are connected at their first ends to each other, that the threaded hole is provided at the connection of the first ends of a plurality of the first arms, and that the first pin body (1) is screwed to the connecting rod (4).

4. The cotter pin according to claim 1, further comprising a first limiting member (51) and a second limiting member (52), wherein the first limiting member (51) and the second limiting member (52) are respectively disposed on the connecting rod (4) and can be abutted 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).

5. The cotter pin according to claim 1, characterized in that the first arm (11) comprises a cantilever (111) and a mounting portion (112) connected to the cantilever (111), the first arm first end is located at the cantilever (111), the first arm second end is located at the mounting portion (112), the cantilever (111) and the connecting rod (4) are arranged at an included angle, and the mounting portion (112) and the connecting rod (4) are arranged at an interval.

6. Cotter pin according to claim 5, 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 connected to the mounting portion and a first tail second end remote from the connecting rod (4) with respect to the first tail first end.

7. The cotter pin according to any one of claims 1-6, further comprising a second pin body (2), wherein the second pin body (2) comprises a second arm (21), the second arm (21) has a second arm first end and a second arm second end, the second arm first end is connected to the connecting rod (4), the second arm second end is spaced apart from the connecting rod (4), a connecting line between the second arm first end and the second arm second end forms an angle with the connecting rod (4), and the first pin body (1) is located between the second pin body (2) and the temperature sensing member (3).

8. Cotter pin according to claim 7, characterised in that the second leg (21) is provided in a plurality, the second legs (21) being arranged at intervals in the circumferential direction of the connecting rod (4).

9. The cotter pin according to claim 7, characterised in that the second pin body (2) further comprises a second tail portion (22), the second tail portion (22) being circular-arc shaped and having a second tail first end connected to the second arm second end and a second tail second end remote from the connecting rod (4) with respect to the second tail first end.

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