Tension testing device for lightning protection support

Abstract

The invention discloses a tension testing device for a lightning protection bracket. The tension testing device comprises a supporting part, a fixing part and a tension adjusting part, a through hole allowing the tension adjusting part to penetrate through is formed in the supporting part, and the end of the tension adjusting part is connected with the fixing part; the fixing part is used for clamping the lightning protection support to be tested; the tension adjusting part can perform relative position change relative to the supporting part; the supporting part comprises a supporting plate and supporting legs; the supporting legs are arranged at the bottom of the supporting plate, the tops of the supporting legs are hinged to the supporting plate, the number of the supporting legs is at least three along the bottom of the supporting plate, and the central angles of the adjacent supporting legs are evenly arranged; the device can be folded, can be simply and conveniently adjusted, is small in size, convenient to carry, high in measurement precision, simple to operate, high in test speed, wide in application range and beneficial to field operation. Meanwhile, the scheme does not need a specially-assigned person to operate the tension scale for a long time, the person can leave after the lightning protection support tension testing device is erected, and the labor intensity of the operator during testing is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of lightning protection equipment detection, and particularly relates to a device for testing the tensile force of lightning protection brackets. Background Art

[0002] The lightning protection grounding system effectively disperses and guides lightning current by installing lightning protection devices on lightning protection brackets, thereby preventing lightning from directly hitting equipment and reducing damage to equipment caused by lightning. The lightning protection bracket is an important part of the lightning protection device, which ensures the stable connection between lightning protection equipment such as lightning rods and lightning wires and buildings or other structures.

[0003] According to the current construction quality acceptance code, the installation of lightning conductors and lightning belts should meet the requirement that each fixed bracket should be able to withstand a vertical tensile force of 49 N, and 30% of the total number of supports should be randomly inspected, and the number should not be less than 3; however, in actual projects, due to the large number and wide distribution of lightning protection brackets, and the long-term measurement with a handheld tensile scale causing extremely high labor intensity for testers, this test is difficult to be effectively implemented. In addition, universal testing machines and electronic universal testing machines are also used for testing the tensile force of lightning protection brackets, but their applications in projects are not extensive due to reasons such as large volume and complex operation.

[0004] Therefore, it is imperative to develop a device for testing the tensile force of lightning protection brackets with small volume, convenient to carry, high measurement accuracy, simple operation, fast testing speed, and wide application range to determine whether the tensile force of lightning protection brackets meets the specification requirements. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for testing the tensile force of lightning protection brackets to solve the problem that long-term measurement of lightning protection brackets with a handheld tensile scale in the prior art will increase the labor intensity of testers, and at the same time, using a universal testing machine or an electronic universal testing machine for testing the tensile force of lightning protection brackets will have problems such as large volume and complex operation.

[0006] The present invention is realized through the following solutions:

[0007] A device for testing the tensile force of lightning protection brackets includes at least a support part, a fixing part, and a tensile force adjusting part; a through hole for the tensile force adjusting part to pass through is provided in the support part, and the end of the tensile force adjusting part is connected to the fixing part; the fixing part is used for clamping the lightning protection bracket to be tested; the tensile force adjusting part can change its relative position with respect to the support part.

[0008] Based on the structure of the above device for testing the tensile force of lightning protection brackets, the support part includes a support plate and support legs; the support legs are arranged at the bottom of the support plate, the top of the support legs is hinged to the support plate, at least 3 support legs are arranged along the bottom position of the support plate, and the central angles of adjacent support legs are evenly arranged.

[0009] Based on the structure of the lightning protection bracket tensile test device described above, the support leg includes a first telescopic leg and a second telescopic leg. The first telescopic leg is hollow and has internal threads provided therein. The end of the second telescopic leg close to the first telescopic leg is provided with external threads, and the end of the second telescopic leg away from the first telescopic leg is provided with a sharp part; the second telescopic leg is screwed into the first telescopic leg.

[0010] Based on the structure of the lightning protection bracket tensile test device described above, the tensile force adjusting part includes a tensile force limiting disc, a tensile force adjusting bolt and a level gauge; a connecting cylinder is provided at the center position of the tensile force limiting disc, and external threads matching the tensile force adjusting bolt are provided in the connecting cylinder. The level gauge is arranged at the top position of the tensile force limiting disc; the tensile force adjusting bolt passes through the connecting cylinder.

[0011] Based on the structure of the lightning protection bracket tensile test device described above, the tensile force limiting disc includes a body part and a clamping ring part; the clamping ring part is arranged along the circumferential position of the body part, and the inner diameter size of the clamping ring part is adapted to the size of the support plate, so that the clamping ring part can be clamped on the support plate.

[0012] Based on the structure of the lightning protection bracket tensile test device described above, a through hole matching the tensile force adjusting bolt is provided at the center position of the support plate, and the tensile force adjusting bolt passes through the connecting cylinder and the central through hole of the support plate and extends downward by a predetermined distance.

[0013] Based on the structure of the lightning protection bracket tensile test device described above, a connecting ring and a tensile scale are provided at the end of the tensile force adjusting bolt; the tensile ring is respectively connected to the tensile force adjusting bolt and the tensile scale, and the tensile scale is connected to the fixing part.

[0014] Based on the structure of the lightning protection bracket tensile test device described above, the fixing part includes a support rod, a first hinge bracket, a second hinge bracket and a locking member; the first hinge bracket and the second hinge bracket are respectively hinged to both ends of the support rod, and a support ring matching the hook of the tensile scale is provided at the center position of the support rod; the locking member is arranged at the end positions of the first hinge support and the second hinge bracket away from the support rod.

[0015] Based on the structure of the lightning protection bracket tensile test device described above, the first hinge bracket includes a first connecting rod, a second connecting rod and a first arc rod; the first arc rod is arranged between the first connecting rod and the second connecting rod; the clamping ring of the locking member is arranged on the second connecting rod; the second hinge bracket includes a third connecting rod, a fourth connecting rod and a second arc rod; the second arc rod is arranged between the third connecting rod and the fourth connecting rod; the clamping lock of the locking member is arranged on the fourth connecting rod.

[0016] On the contact parts of the second connecting rod and the lightning protection bracket, and on the contact parts of the fourth connecting rod and the lightning protection bracket, rubber pads are provided.

[0017] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0018] 1. When it is necessary to detect the lightning protection bracket, the lightning protection bracket is clamped through the fixing part, and at the same time, the clamped lightning protection bracket is adjusted to the specified vertical tension of 49 N through the tension adjusting part, so that the entire detection device can quickly and efficiently realize the tension detection in the specified strength and specified direction. The support frame provides the support strength for the whole, and keeps the overall tension in the vertical direction.

[0019] 2. This solution is foldable and can be simply adjusted. At the same time, it has a small volume, is convenient to carry, has high measurement accuracy, simple operation, fast test speed, wide application range, and is conducive to on-site operation.

[0020] 3. This solution does not require a special person to operate the tension scale for a long time. After setting up the lightning protection bracket tension test device, the personnel can leave, reducing the labor intensity of the operators during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the whole of the present invention;

[0022] BRIEF DESCRIPTION OF THE DRAWINGS: 1. Support part; 2. Fixing part; 3. Tension adjusting part; 4. Lightning protection bracket; 5. Connection ring; 6. Tension scale; 11. Support plate; 12. Support leg; 21. Support rod; 22. First hinge bracket; 23. Second hinge bracket; 24. Locking part; 25. Support ring; 26. Rubber pad; 121. First telescopic leg; 122. Second telescopic leg; 123. External thread; 124. Sharp part; 221. First connecting rod; 222. Second connecting rod; 223. First arc rod; 231. Third connecting rod; 232. Fourth connecting rod; 233. Second arc rod; 31. Tension limit disc; 32. Tension adjusting bolt; 33. Leveling instrument; 34. Connecting cylinder; 311. Body part; 312. Snap ring part. DETAILED DESCRIPTION OF THE INVENTION

[0023] All the features disclosed in this specification, or all the steps in any method or process disclosed, except for mutually exclusive features and / or steps, can be combined in any way.

[0024] Any feature disclosed in this specification (including any additional claims and abstract), unless specifically stated, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0026] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.

[0027] Embodiment 1

[0028] As Figure 1 shown, the present invention provides a technical solution:

[0029] A lightning protection bracket tensile test device, which at least includes but is not limited to a support part 1, a fixing part 2 and a tensile force adjusting part 3; a through hole for the tensile force adjusting part 3 to penetrate is provided in the support part 1, and the end of the tensile force adjusting part 3 is connected to the fixing part 2; the fixing part 2 is used for clamping the lightning protection bracket 4 to be tested; the tensile force adjusting part 3 can change its relative position with respect to the support part 1.

[0030] Based on the above structure, when it is necessary to test the lightning protection bracket 4, the lightning protection bracket 4 is clamped by the fixing part 2, and at the same time, the clamped lightning protection bracket 4 is adjusted to a specified vertical tensile force of 49 N through the tensile force adjusting part 3, so that the entire testing device can quickly and efficiently achieve the tensile force detection in the specified strength and direction, and the support frame provides the support strength for the whole, keeping the overall tensile force in the vertical direction.

[0031] As an example, the support part 1 may include a support plate 11 and support legs 12; the support legs 12 are arranged at the bottom position of the support plate 11, the top of the support legs 12 is hinged to the support plate 11, and at least 3 support legs 12 are arranged along the bottom position of the support plate 11, and the central angles of adjacent support legs 12 are evenly arranged.

[0032] Based on the above structure, the support plate 11 can be stably supported by at least 3 support legs 12, so that the support plate 11 can be kept in a horizontal state as much as possible.

[0033] As an example, the support leg 12 may include a first telescopic leg 121 and a second telescopic leg 122. The first telescopic leg 121 is hollow and has internal threads provided therein. At the end of the second telescopic leg 122 close to the first telescopic leg 121, there is an external thread 123, and at the end of the second telescopic leg 122 away from the first telescopic leg 121, there is a sharp portion 124. The second telescopic leg 122 is screwed into the first telescopic leg 121.

[0034] Based on the above structure, when adjusting the level of the support plate 11, first, a rough adjustment is made by the distance that the sharp end is inserted into the ground. When encountering a hard ground or when fine level adjustment is required, by rotating the second telescopic leg 122, the overall length of the first telescopic leg 121 and the second telescopic leg 122 is changed, so as to adjust the length of each support leg 12, thereby realizing fine adjustment of the levelness.

[0035] As an example, the tension adjustment part 3 may include a tension limit disc 31, a tension adjustment bolt 32, and a level meter 33. At the central position of the tension limit disc 31, there is a connecting cylinder 34, and external threads 123 that cooperate with the tension adjustment bolt 32 are provided in the connecting cylinder 34. The level meter 33 is arranged at the top position of the tension limit disc 31. The tension adjustment bolt passes through the connecting cylinder 34.

[0036] The tension limit disc 31 may include a body part 311 and a clamping ring part 312. The clamping ring part 312 is arranged along the circumferential position of the body part 311, and the inner diameter of the clamping ring part 312 is adapted to the size of the support plate 11, so that the clamping ring part 312 can be clamped on the support plate 11.

[0037] Based on the above structure, by setting the level meter 33, the horizontal state of the support plate 11 can be monitored in real time when adjusting the support leg 12. That is, when the bubble in the level meter 33 is located at the central position of the level meter 33, it means that the support plate 11 is in a horizontal state.

[0038] As an example, a through hole that cooperates with the tension adjustment bolt 32 is provided at the central position of the support plate 11. The tension adjustment bolt 32 passes through the connecting cylinder 34 and the central through hole of the support plate 11 and extends downward by a predetermined distance.

[0039] At the end of the tension adjustment bolt 32, there are a connecting ring 5 and a tension scale 6. The tension ring is respectively connected to the tension adjustment bolt 32 and the tension scale 6, and the tension scale 6 is connected to the fixing part 2.

[0040] Based on the above structure, after adjusting the level of the support plate 11, screw the tension adjusting bolt 32 into the connecting cylinder 34, and adjust the height position by rotating the tension adjusting bolt 32. After the fixing part 2 is fixed to the lightning protection bracket 4 to be tested, adjust the tension by rotating the tension adjusting bolt 32, and accurately output the tension by observing the number on the tension scale 6, so that the detection process complies with relevant regulations.

[0041] As an example, the fixing part 2 may include a support rod 21, a first hinge bracket 22, a second hinge bracket 23 and a locking member 24; the first hinge bracket 22 and the second hinge bracket 23 are respectively hinged to both ends of the support rod 21, and a support ring 25 for cooperating with the hook of the tension scale 6 is arranged at the central position of the support rod 21; the locking member 24 is arranged at the end positions of the first hinge support and the second hinge bracket 23 away from the support rod 21;

[0042] Based on the above structure, the lightning protection bracket 4 can be clamped through the first hinge bracket 22 and the second hinge bracket 23, and the clamping state can be locked through locking to ensure the stability of the clamping process. The hook of the tension scale 6 is connected to the support ring 25 to output the tension.

[0043] As an example, the first hinge bracket 22 may include a first connecting rod 221, a second connecting rod 222 and a first arc rod 223; the first arc rod 223 is arranged between the first connecting rod 221 and the second connecting rod 222; the clamping ring of the locking member 24 is arranged on the second connecting rod 222;

[0044] The second hinge bracket 23 may include a third connecting rod 231, a fourth connecting rod 232 and a second arc rod 233; the second arc rod 233 is arranged between the third connecting rod 231 and the fourth connecting rod 232; the clamping lock of the locking member 24 is arranged on the fourth connecting rod 232;

[0045] Rubber pads 26 are arranged on the contact parts of the second connecting rod 222 with the lightning protection bracket 4 and the contact parts of the fourth connecting rod 232 with the lightning protection bracket 4.

[0046] Based on the above structure, by arranging the first arc rod 223 and the second arc rod 233, interference with the end of the lightning protection bracket 4 during clamping can be avoided. By arranging the rubber pads 26, on the one hand, the friction with the lightning protection bracket 4 can be increased, and on the other hand, damage to the lightning protection bracket 4 can be avoided.

[0047] When used for the tension test of the lightning protection bracket 4, the four components can be quickly assembled through the connecting components for testing. The test includes four steps:

[0048] 1. Place a foldable support frame near the lightning protection bracket 4 to be tested. Initially adjust the lengths of the three legs of the foldable support frame to make the top surface of the foldable support frame basically horizontal.

[0049] 2. By adjusting the articulated joint, clamp one side of the rubber pad 26 of the universal buckle to the lightning protection device such as the lightning protection belt. After clamping, lock the holding ring into the holding lock.

[0050] 3. Install a tension adjustment disc on the top surface of the foldable support frame. The tension adjustment bolt 32 passes through the perforation at the center point of the top surface of the foldable support frame. Fine-tune the lengths of the three legs of the foldable support frame so that the bubble of the level 33 on the top surface is located at the center of the circle. Hang the upper and lower hook points of the 5 Kg tension scale 6 on the tension adjustment disc and the universal buckle fastener respectively. Adjust the tension adjustment bolt 32 on the tension adjustment disc to apply a 4.9 KN tension to the lightning protection device such as the lightning protection belt, simulating the tension borne by the lightning protection bracket 4 under actual use conditions.

[0051] 4. Test and record the tension value, and judge whether the lightning protection bracket 4 meets the specifications based on this.

[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A lightning arrester tension test device, characterized in that: It at least includes a supporting part, a fixing part and a tension adjusting part; the supporting part is provided with a through hole for the tension adjusting part to pass through, and the end of the tension adjusting part is connected to the fixing part; the fixing part is used to clamp the lightning protection bracket to be tested; the tension adjusting part can change its relative position relative to the supporting part.

2. A lightning arrester tension test device as claimed in claim 1, characterized in that: The support part includes a support plate and a support leg; the support leg is arranged at the bottom position of the support plate, the top of the support leg is hinged to the support plate, the support legs are arranged at least 3 along the bottom position of the support plate, and the central angles of adjacent support legs are evenly arranged.

3. A lightning arrester tension test device as claimed in claim 2, characterized in that: The supporting leg includes a first telescopic leg and a second telescopic leg. The first telescopic leg is hollow and has an internal thread. The end of the second telescopic leg close to the first telescopic leg is provided with an external thread. The end of the second telescopic leg away from the first telescopic leg is provided with a sharp portion. The second telescopic leg is threaded into the first telescopic leg.

4. A lightning arrester tension test device as claimed in claim 3, characterized in that: The tension adjustment part includes a tension limit plate, a tension adjustment bolt and a horizontal level; a connecting tube is arranged at the center position of the tension limit plate, an external thread matching with the tension adjustment bolt is arranged in the connecting tube, and the horizontal level is arranged at the top position of the tension limit plate; the tension adjustment bolt is arranged through the connecting tube.

5. A lightning arrester tension test device as claimed in claim 4, characterized in that: The tension limiting disk comprises a main body and a clamping ring; the clamping ring is arranged along the circumferential position of the main body, and the inner diameter of the clamping ring matches the size of the support plate so that the clamping ring can be clamped on the support plate.

6. A lightning arrester tension test device as claimed in claim 5, characterized in that: A through hole cooperating with a tension adjustment bolt is arranged at the center of the support plate. The tension adjustment bolt passes through the connecting tube and the center through hole of the support plate and extends downward by a predetermined distance.

7. A lightning arrester tension test device as claimed in claim 6, characterized in that: A connecting ring and a tension scale are provided at the end of the tension adjustment bolt; the tension ring is connected to the tension adjustment bolt and the tension scale respectively, and the tension scale is connected to the fixing part.

8. A lightning arrester tension test device as claimed in claim 7, characterized in that: The fixing part includes a support rod, a first articulated bracket, a second articulated bracket and a locking piece; the first articulated bracket and the second articulated bracket are respectively hingedly arranged at two ends of the support rod, and a support ring cooperating with a tension scale hook is arranged at the center position of the support rod; the locking piece is arranged at the end position of the first articulated support and the second articulated bracket away from the support rod.

9. A lightning arrester tension test device as claimed in claim 8, characterized in that: The first articulated bracket includes a first connecting rod, a second connecting rod and a first arc-shaped rod; the first arc-shaped rod is arranged between the first connecting rod and the second connecting rod; the clamping ring of the locking member is arranged on the second connecting rod; the second articulated bracket includes a third connecting rod, a fourth connecting rod and a second arc-shaped rod; the second arc-shaped rod is arranged between the third connecting rod and the fourth connecting rod; the clamping lock of the locking member is arranged on the fourth connecting rod.

10. A lightning arrester tension test device as claimed in claim 9, characterized in that: Rubber pads are provided on the contact portion between the second connecting rod and the lightning protection bracket, and on the contact portion between the fourth connecting rod and the lightning protection bracket.

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