A power transmission pole cross arm

Abstract

The utility model discloses a kind of power transmission pole cross arms, comprising: angle iron cross bar and the U-shaped hoop of two ends all through the side wall of angle iron cross bar, every end portion on the U-shaped hoop is all threadedly connected with nut, every end portion on the U-shaped hoop is all equipped with anti-loosening unit, the anti-loosening unit includes the first mounting piece of being sleeved on the end portion of U-shaped hoop and can be contacted with the lower end of angle iron cross bar, the positioning piece of being clamped and sleeved on the outside of nut and the second mounting piece of being detachably assembled together with the first mounting piece and being clamped with positioning piece, the first mounting piece is located between bolt and angle iron cross bar, can prevent the problem of nut relaxation, can greatly reduce the frequency of regular patrol, safety performance is also higher, when checking by telescope, only need to check whether first mounting piece and second mounting piece are damaged, relative to traditional check paint line, target is larger, more advantageous observation, its judging mode is also more simple, it is advantageous to improve the efficiency when patrolling.

Description

Technical Field

[0001] This utility model relates to the technical field of power equipment installation, specifically to a crossarm of a transmission pole. Background Technology

[0002] As the backbone of power transmission, the stability of utility poles is crucial. Crossarms, also known as crossbars, are attached to utility poles using U-shaped clamps. If the U-shaped clamp nuts loosen, the crossbar may shift, sink, or even fall off, potentially causing short circuits, power outages, or even pole collapse. Utility poles are constantly exposed to the natural environment, subjecting them to wind vibrations and occasional ground tremors. Continuous vibrations gradually reduce the friction between the threads, causing the nut to "creep" along the threads, which is the primary cause of nut loosening.

[0003] While the risk of nut loosening certainly exists, modern power engineering has significantly reduced this risk through a series of mature and reliable measures, such as double nuts, spring washers, anti-loosening washers, and painted markings. However, to prevent loosening, regular inspections are still necessary. Currently, this is generally done by observing the painted markings with a telescope; if the markings are intact, the nut is considered tight and pole climbing is unnecessary. However, this method has its limitations. The painted markings can easily detach in the long-term exposure to wind and rain, increasing the difficulty of later inspections. It's impossible to determine nut loosening using a telescope, and existing measures still have a low probability of loosening. Although the probability is low, it still poses a safety hazard. Therefore, a new type of crossarm for transmission poles needs to be designed. Utility Model Content

[0004] In view of the above-mentioned technical problems, the purpose of this utility model is to overcome the problems in the prior art where the paint thread falls off due to fire in the external environment of wind and rain, which makes it difficult to inspect later, and the existing anti-loosening measures still have certain safety hazards.

[0005] To achieve the above objectives, this utility model provides a crossarm for a power transmission pole, comprising: an angle iron crossarm and a U-shaped clamp with both ends passing through the sidewalls of the angle iron crossarm, wherein each end of the U-shaped clamp is threaded with a nut and each end of the U-shaped clamp is equipped with an anti-loosening unit; The anti-loosening unit includes a first mounting component that is sleeved on the end of the U-shaped clamp and can abut against the lower end of the angle iron crossbar, a positioning component that is snapped onto the outside of the nut, and a second mounting component that is detachably assembled with the first mounting component and snapped onto the positioning component. The first mounting component is located between the bolt and the angle iron crossbar.

[0006] Preferably, the positioning member has a protruding positioning post whose axial direction is consistent with that of the nut, and the second mounting member has a plurality of arc-shaped through slots distributed at intervals along the circumference of the nut, and the positioning post is inserted into the corresponding arc-shaped through slot.

[0007] Preferably, the first mounting component includes a vertical first plate-shaped portion that is in close contact with the inner wall of the angle iron crossbar and is sleeved on the end of the U-shaped clamp; a horizontal second plate-shaped portion that is fixedly connected to the top of the first plate-shaped portion; a third plate-shaped portion that is fixedly connected to the lower end of the first plate-shaped portion and in contact with the bottom side of the angle iron crossbar; and a vertical fourth plate-shaped portion whose top is fixedly connected to the side of the third plate-shaped portion away from the first plate-shaped portion.

[0008] Preferably, a first strip-shaped groove is provided through the second plate-shaped portion, and the second mounting member includes a first limiting portion that contacts the top of the second plate-shaped portion, a hook-shaped portion that is fixedly connected to the first limiting portion and inserted downward into the first strip-shaped groove, a fifth plate-shaped portion that is fixedly connected to the first limiting portion and in contact with the positioning member, a second limiting portion that is fixedly connected to the lower end of the fifth plate-shaped portion and in contact with the first plate-shaped portion, and a snap-fit ​​portion that is fixedly connected to the lower end of the second limiting portion and can be detachably snapped into the fourth plate-shaped portion.

[0009] Preferably, a horizontal second strip-shaped groove is provided through the fourth plate-shaped portion, and the portion of the snap-fit ​​portion passing through the second strip-shaped groove is bent to fit the fourth plate-shaped portion.

[0010] Preferably, the fifth plate-shaped portion is provided with a third strip-shaped through groove through which the end of the U-shaped clamp passes.

[0011] Preferably, an elastic washer and a regular washer are provided between the first mounting component and the nut, and the washer is fitted onto the end of the U-shaped clamp.

[0012] According to the above technical solution, the beneficial effects of the crossarm of the power transmission pole provided by this utility model in use are as follows: Firstly, because the first mounting part is in contact with the lower surface of the angle iron crossbar, the rotational movement of the first mounting part is restricted. Then, the positioning part is sleeved on the nut, the second mounting part is snapped into the positioning part, and finally the second mounting part is connected to the first mounting part. This can eliminate the problem of nut loosening, greatly reduce the frequency of regular inspections, and improve the safety performance. Secondly, when inspecting through a telescope, only the first and second mounting parts need to be checked for damage. Compared to the traditional method of checking the paint lines, the target object is larger and easier to observe. The judgment method is also simpler, which helps to improve the efficiency of the inspection. Thirdly, the anti-loosening unit can be directly used on existing angle iron crossbars, which is convenient for buyers to use after purchase and also beneficial for market promotion.

[0013] Other features and advantages of this utility model will be described in detail in the following detailed description section; and all parts not covered in this utility model are the same as or can be implemented using existing technology. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This utility model provides a schematic diagram of the use of a crossarm on a power transmission pole. Figure 2 This utility model provides a type of crossarm for power transmission poles. Figure 1 Enlarged view of point A in the middle; Figure 3 This is a partial exploded view of a crossarm of a power transmission pole provided in this utility model. Figure 1 ; Figure 4 This is a partial exploded view of a crossarm of a power transmission pole provided in this utility model. Figure 2 ; Figure 5 This is a partial sectional view of a crossarm of a power transmission pole provided in this utility model.

[0015] Explanation of reference numerals in the attached figures 1. Angle iron crossbar; 2. U-shaped clamp; 3. Nut; 4. First mounting part; 5. Positioning part; 6. Second mounting part; 7. Positioning post; 8. Arc-shaped through groove; 9. First plate-shaped part; 10. Second plate-shaped part; 11. Third plate-shaped part; 12. Fourth plate-shaped part; 13. First strip-shaped through groove; 14. First limiting part; 15. Hook-shaped part; 16. Fifth plate-shaped part; 17. Second limiting part; 18. Snap-fit ​​part; 19. Second strip-shaped through groove; 20. Third strip-shaped through groove; 21. Elastic gasket; 22. Ordinary gasket. Detailed Implementation

[0016] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0017] In this utility model, unless otherwise stated, directional words such as "upper," "lower," "inner," and "outer" included in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0018] like Figure 1-5As shown, a crossarm of a power transmission pole includes: an angle iron crossarm 1 and a U-shaped clamp 2 with both ends passing through the sidewall of the angle iron crossarm 1. Each end of the U-shaped clamp 2 is threaded with a nut 3, and each end of the U-shaped clamp 2 is equipped with an anti-loosening unit. The anti-loosening unit includes a first mounting part 4 that is sleeved on the end of the U-shaped clamp 2 and can abut against the lower end of the angle iron crossbar 1, a positioning part 5 that is snapped on the outside of the nut 3, and a second mounting part 6 that is detachably assembled with the first mounting part 4 and snapped with the positioning part 5. The first mounting part 4 is located between the bolt and the angle iron crossbar 1.

[0019] In the above technical solution, when installing the angle iron crossbar 1, the first mounting part 4 is sleeved on the end of the U-shaped clamp 2, and then the nut 3 is tightened. Since the first mounting part 4 is in contact with the lower surface of the angle iron crossbar 1, the rotational movement of the first mounting part 4 is restricted. Then, the positioning part 5 is sleeved on the nut 3, and the second mounting part 6 is snapped into the positioning part 5. Finally, the second mounting part 6 is connected to the first mounting part 4. This can prevent the problem of the nut 3 from loosening, greatly reduce the frequency of regular inspections, and improve efficiency. When inspecting through a telescope, it is only necessary to check whether the first mounting part 4 and the second mounting part 6 are damaged. Compared with the traditional method of checking the paint line, the target object is larger and easier to observe. The judgment method is also simpler, which helps to improve the efficiency of the inspection. The anti-loosening unit can be used directly on the existing angle iron crossbar 1, which is convenient for buyers to use after purchase and also beneficial for market promotion.

[0020] In a preferred embodiment of this utility model, the positioning member 5 is provided with a positioning post 7 whose axial direction is consistent with the axial direction of the nut 3, and the second mounting member 6 is provided with a plurality of arc-shaped through grooves 8 distributed at intervals along the circumferential direction of the nut 3, and the positioning post 7 is inserted into the corresponding arc-shaped through groove 8.

[0021] In the above technical solution, the cooperation between the arc-shaped through groove 8 and the positioning post 7 can limit the loosening of the nut 3 to no more than one-sixth of the full turn. This slight rotation of the nut 3 will not affect the overall assembly state, and therefore will not cause the nut 3 to loosen. During the tightening of nut 3, the position of nut 3 cannot be precisely controlled, that is, the position of positioning post 7 cannot be precisely controlled. Therefore, setting the arc-shaped through groove 8 can improve the fault tolerance rate and also facilitate the insertion of positioning post 7 into the arc-shaped through groove 8.

[0022] In a preferred embodiment of the present invention, the first mounting member 4 includes a vertical first plate-shaped part 9 that is in close contact with the inner side wall of the angle iron crossbar 1 and is sleeved on the end of the U-shaped clamp 2; a horizontal second plate-shaped part 10 that is fixedly connected to the top of the first plate-shaped part 9; a third plate-shaped part 11 that is fixedly connected to the lower end of the first plate-shaped part 9 and in contact with the bottom side of the angle iron crossbar 1; and a vertical fourth plate-shaped part 12 that is fixedly connected to the top of the third plate-shaped part 11 on the side away from the first plate-shaped part 9.

[0023] In the above technical solution, when assembling the first mounting part 4, the first plate-shaped part 9 is sleeved on the end of the U-shaped clamp 2 and fits against the inner wall of the angle iron crossbar 1, and the third plate-shaped part 11 contacts the bottom side of the angle iron crossbar 1, thereby restricting the rotational movement of the first mounting part 4 and fixing the first mounting part 4.

[0024] In a preferred embodiment of the present invention, a first strip-shaped through groove 13 is provided through the second plate-shaped portion 10, and the second mounting member 6 includes a first limiting portion 14 that contacts the top of the second plate-shaped portion 10, a hook-shaped portion 15 that is fixedly connected to the first limiting portion 14 and inserted downward into the first strip-shaped through groove 13, a fifth plate-shaped portion 16 that is fixedly connected to the first limiting portion 14 and in contact with the positioning member 5, a second limiting portion 17 that is fixedly connected to the lower end of the fifth plate-shaped portion 16 and in contact with the first plate-shaped portion 9, and a snap-fit ​​portion 18 that is fixedly connected to the lower end of the second limiting portion 17 and can be detachably snapped into the fourth plate-shaped portion 12.

[0025] In the above technical solution, after the nut 3 is tightened, the positioning part 5 is sleeved on the nut 3, and then the hook-shaped part 15 is inserted into the first strip-shaped through groove 13, so that the fifth plate-shaped part 16 fits with the positioning part 5. At this time, the positioning post 7 will pass through the corresponding arc-shaped through groove 8, and the second limiting part 17 will fit with the first plate-shaped part 9. Then, the snap-fit ​​part 18 is connected with the fourth plate-shaped part 12, which can fix the second mounting part 6.

[0026] In a preferred embodiment of the present invention, a horizontal second strip-shaped groove 19 is provided through the fourth plate-shaped portion 12, and the portion of the snap-fit ​​portion 18 passing through the second strip-shaped groove 19 is bent to fit the fourth plate-shaped portion 12.

[0027] In the above technical solution, the shapes of the first mounting part 4 and the second mounting part 6 are inherent to the product itself. In use, simply pass the snap-fit ​​part 18 through the second strip groove 19 and bend the snap-fit ​​part 18 with a vise or other tool so that the snap-fit ​​part 18 and the fourth plate-shaped part 12 are connected together.

[0028] In a preferred embodiment of the present invention, a third strip-shaped through groove 20 is provided through the fifth plate-shaped portion 16 for the end of the U-shaped clamp 2 to pass through.

[0029] In a preferred embodiment of this utility model, an elastic washer 21 and a regular washer 22 are further provided between the first mounting member 4 and the nut 3, which are sleeved on the end of the U-shaped clamp 2.

[0030] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0031] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0032] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A crossarm for a power transmission pole, characterized in that, include: Angle iron crossbar (1) and U-shaped clamps (2) that pass through the side walls of angle iron crossbar (1) at both ends. Each end of the U-shaped clamp (2) is threaded with a nut (3) and each end of the U-shaped clamp (2) is equipped with an anti-loosening unit. The anti-loosening unit includes a first mounting part (4) sleeved on the end of the U-shaped clamp (2) and able to abut against the lower end of the angle iron crossbar (1), a positioning part (5) snapped on the outside of the nut (3), and a second mounting part (6) detachably assembled with the first mounting part (4) and snapped with the positioning part (5). The first mounting part (4) is located between the bolt and the angle iron crossbar (1).

2. The crossarm of a power transmission pole according to claim 1, characterized in that, The positioning component (5) has a protruding positioning post (7) whose axial direction is consistent with that of the nut (3). The second mounting component (6) has several arc-shaped through slots (8) spaced along the circumference of the nut (3). The positioning post (7) is inserted into the corresponding arc-shaped through slot (8).

3. A crossarm for a power transmission pole according to claim 1, characterized in that, The first mounting component (4) includes a vertical first plate-shaped part (9) that is in close contact with the inner wall of the angle iron crossbar (1) and sleeved on the end of the U-shaped clamp (2), a horizontal second plate-shaped part (10) that is fixedly connected to the top of the first plate-shaped part (9), a third plate-shaped part (11) that is fixedly connected to the lower end of the first plate-shaped part (9) and in contact with the bottom side of the angle iron crossbar (1), and a vertical fourth plate-shaped part (12) that is fixedly connected to the top of the third plate-shaped part (11) away from the first plate-shaped part (9).

4. A crossarm for a power transmission pole according to claim 3, characterized in that, The second plate-shaped part (10) is provided with a first strip-shaped through groove (13). The second mounting member (6) includes a first limiting part (14) that contacts the top of the second plate-shaped part (10), a hook-shaped part (15) that is fixedly connected to the first limiting part (14) and inserted downward into the first strip-shaped through groove (13), a fifth plate-shaped part (16) that is fixedly connected to the first limiting part (14) and in contact with the positioning member (5), a second limiting part (17) that is fixedly connected to the lower end of the fifth plate-shaped part (16) and in contact with the first plate-shaped part (9), and a snap-fit ​​part (18) that is fixedly connected to the lower end of the second limiting part (17) and can be detachably snapped into the fourth plate-shaped part (12).

5. A crossarm for a power transmission pole according to claim 4, characterized in that, A horizontal second strip groove (19) is provided through the fourth plate-shaped part (12), and the part of the snap-fit ​​part (18) passing through the second strip groove (19) is bent to fit the fourth plate-shaped part (12).

6. A crossarm for a power transmission pole according to claim 4, characterized in that, The fifth plate-shaped part (16) is provided with a third strip-shaped through groove (20) through which the end of the U-shaped clamp (2) passes.

7. A crossarm for a power transmission pole according to claim 1, characterized in that, An elastic washer (21) and a regular washer (22) are also provided between the first mounting component (4) and the nut (3) and are sleeved on the end of the U-shaped clamp (2).

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