Metal bar splicing clamp and grounding grid

Abstract

The utility model relates to the technical field of power equipment, and discloses a metal rod splicing clamp and a grounding grid, the metal rod splicing clamp comprises a first clamping piece, a second clamping piece, a third clamping piece and a fourth clamping piece, a first clamping groove is formed in the first clamping piece, a second clamping groove is formed in the second clamping piece, and the second clamping piece and the first clamping piece are oppositely buckled so that the first clamping groove and the second clamping groove can jointly define a clamping area. The first clamping piece and the second clamping piece clamp the two metal bars in the clamping area, the tail end of one metal bar and the head end of the other metal bar are both located in the clamping area, that is, the two metal bars are connected in a splicing mode through the first clamping piece and the second clamping piece, the argon arc welding mode is replaced, the requirement for the construction environment is low, and the welding efficiency is high. Other equipment does not need to be arranged, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a metal rod connection clamp and a grounding grid. Background Art

[0002] The grounding grid is a commonly used component in power construction projects. It is a mesh structure formed by connecting multiple metal rods. Due to the limitations of the manufacturing process and equipment of each metal rod, the length of a single metal rod is limited. Therefore, when making a large-sized grounding grid, the metal rods need to be connected. The commonly used connection method is to weld the end of one of the two metal rods to the beginning of the other by argon arc welding. Since welding requires a specific construction environment and equipment, the operation is very inconvenient. Utility Model Content

[0003] The utility model aims to overcome the problem of inconvenient connection of two metal rods in the prior art and provides a metal rod connection clamp and a grounding grid. The metal rod connection clamp has the function of conveniently connecting two metal rods.

[0004] In order to achieve the above-mentioned purpose, the first aspect of the utility model provides a metal rod connection clamp, including: a first clamping member, on which a first clamping groove is formed; and a second clamping member, on which a second clamping groove is formed, the second clamping member is relatively engaged with the first clamping member so that the first clamping groove and the second clamping groove together define a clamping area, the first clamping member and the second clamping member are configured to be able to clamp and fix the end of one of the two metal rods and the head end of the other together in the clamping area, and the materials of the first clamping member and the second clamping member are the same as those of the metal rods.

[0005] Preferably, the clamping area is formed as a cylindrical area and is configured to accommodate the end of one of the two metal rods and the head end of the other in sequence; or, the clamping area is formed as an elliptical cylindrical area and is configured to accommodate the end of one of the two metal rods and the head end of the other side by side; or, the clamping area is formed as two cylindrical areas arranged side by side, and the two cylindrical areas are configured to accommodate the end of one of the two metal rods and the head end of the other, respectively.

[0006] Preferably, the first clamping groove and the second clamping groove are both configured as semicircular grooves, and the sum of their radii is smaller than the diameter of the metal rod.

[0007] Preferably, the axes of the two cylindrical regions of the clamping region are located in the same horizontal plane; and / or the axial lengths of the first clamping member and the second clamping member in the clamping region are 10 to 14 times the radius of the metal rod.

[0008] Preferably, the first clamping member includes an integrally formed first clamping portion and a first connecting portion, the first clamping groove is formed on the first clamping portion, and the second clamping member includes an integrally formed second clamping portion and a second connecting portion, the second clamping groove is formed on the second clamping portion, and the second connecting portion is connected to the first connecting portion.

[0009] Preferably, two first connection parts and two second connection parts are each provided, the two first connection parts are symmetrically arranged on two opposite sides of the first clamping part, and the two second connection parts are symmetrically arranged on two opposite sides of the second clamping part.

[0010] Preferably, the metal rod connecting clamp further comprises a connecting piece, and the first connecting part and the second connecting part are detachably connected via the connecting piece.

[0011] Preferably, a first connecting hole is formed on the first connecting part, and a second connecting hole coaxially connected to the first connecting hole is formed on the second connecting part, and the first connecting part and the second connecting part are connected by a connecting piece passing through the first connecting hole and the second connecting hole; the upper surface of the first clamping part is higher than the upper surface of the first connecting part, so that a first height difference area can be formed above the second connecting part, and the connecting piece is at least partially located in the first height difference area, and / or the lower surface of the second clamping part is lower than the lower surface of the second connecting part, so that a second height difference area can be formed below the second connecting part, and the connecting piece is at least partially located in the second height difference area.

[0012] Preferably, the first connecting holes and the second connecting holes are arranged in a plurality corresponding to each other one by one, the plurality of first connecting holes are arranged at intervals from each other along the extension direction of the first connecting part, the plurality of second connecting holes are arranged at intervals from each other along the extension direction of the second connecting part, and the connecting members are arranged in a plurality corresponding to the first connecting holes and the second connecting holes one by one.

[0013] The second aspect of the utility model provides a grounding grid, comprising a metal rod and the above-mentioned metal rod connecting clamp, wherein the metal rod connecting clamp is connected to two metal rods.

[0014] Through the above technical solution, the first clamping member and the second clamping member clamp the two metal rods in the clamping area, and the end of one metal rod and the head end of the other metal rod are both located in the clamping area, that is, the two metal rods are connected by the first clamping member and the second clamping member, replacing the argon arc welding method, with low requirements on the construction environment, and no need to be equipped with other equipment, and the operation is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a longitudinal cross-sectional view of the metal rod connecting fixture of the utility model;

[0016] Figure 2 is a top view of the metal rod connecting fixture;

[0017] Figure 3 is a longitudinal cross-sectional view of a first clamping member of a metal rod connecting clamp;

[0018] Figure 4 is a longitudinal sectional view of a second clamping member of the metal rod splicing clamp; and

[0019] Figure 5 It is the front view of the connecting part of the metal rod connecting clamp.

[0020] Description of Reference Numerals

[0021] 10. First clamping member; 11. First clamping groove; 12. First clamping portion; 13. First connecting portion; 14. First connecting hole; 20. Second clamping member; 21. Second clamping groove; 22. Second clamping portion; 23. Second connecting portion; 24. Second connecting hole; 30. Connecting member; 31. Bolt; 32. Nut; 40. First gasket; 50. Second gasket. DETAILED DESCRIPTION

[0022] In the present invention, unless otherwise specified, the directional words such as "upper" and "lower" usually refer to the upper and lower parts of the corresponding drawings. "Inside" and "outside" refer to the inside and outside of the outline of the corresponding parts.

[0023] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0024] See also Figures 1 to 5 As shown, the utility model provides a metal rod splicing clamp, comprising: a first clamping member 10, on which a first clamping groove 11 is formed; and a second clamping member 20, on which a second clamping groove 21 is formed, the second clamping member 20 is relatively buckled with the first clamping member 10 so that the first clamping groove 11 and the second clamping groove 21 together define a clamping area, the first clamping member 10 and the second clamping member 20 are configured to be able to clamp and fix the end of one of the two metal rods and the head end of the other together in the clamping area, and the materials of the first clamping member 10 and the second clamping member 20 are the same as those of the metal rods.

[0025] In this embodiment, the two metal rods are fixed in the clamping area by the first clamping member 10 and the second clamping member 20, and the two metal rods are connected by a metal rod connecting clamp, so that the two metal rods do not need to be welded, do not need to be equipped with other equipment, have low requirements on the construction environment, are simple to operate, and have low requirements on the operator.

[0026] Specifically, the first clamping member 10, the second clamping member 20 and the metal rod are made of the same material and will not produce an electrochemical reaction between them. The material is preferably an aluminum-copper rare earth alloy, which has a low density of only 2.8 g / cm 3 The surface is not easily corroded due to the dense oxide protective film. Due to the addition of copper, it has good electrical conductivity and can be made into various lightweight, corrosion-resistant, high-conductivity grounding profiles. It can be used for lightning protection and working grounding in the power industry and has broad application prospects.

[0027] See also Figures 1 to 5 As shown, in some embodiments of the present invention, the clamping area is formed as two cylindrical areas arranged side by side, and the two cylindrical areas are configured to respectively accommodate the end of one of the two metal rods and the head end of the other.

[0028] In this embodiment, a metal rod is contained in each cylindrical region, so that each metal rod can be restricted by the inner wall of the corresponding cylindrical region, thereby preventing the metal rod from moving radially in the cylindrical region, and further enabling the metal rod to be firmly fixed in the clamping region. In order to ensure effective conductivity and clamping stability, the contact area between the metal rod and the metal rod splicing fixture needs to meet the requirements. Each metal rod corresponds to a cylindrical region, so that a single metal rod can fully contact the inner wall of the cylindrical region, ensuring that a sufficient contact area can be formed between the metal rod and the metal rod splicing fixture to meet the requirements of conductivity and clamping stability. In addition, the one-to-one correspondence between the metal rod and the cylindrical region enables the operator to observe the clamping position of each metal rod through each cylindrical region, ensuring a sufficient contact area between the metal rod and the metal rod splicing fixture.

[0029] In other embodiments, the clamping area is formed as an elliptical cylinder area and is configured to accommodate the end of one of the two metal rods and the head of the other metal rod side by side. The two metal rods are in contact and abut against each other in the clamping area. Under the clamping action of the first clamping member 10 and the second clamping member 20, the two metal rods generate mutual force and are firmly fixed in the clamping area.

[0030] In other embodiments, the clamping area is formed as a cylindrical area and is configured to sequentially accommodate the end of one of the two metal rods and the head of the other metal rod. The two metal rods are coaxially accommodated in the clamping area so that the two metal rods extend in the same straight line direction and the radial dimension of the clamping area is reduced.

[0031] See also Figures 1 to 5 As shown, in some embodiments of the present invention, the first clamping groove 11 and the second clamping groove 21 are both configured as semicircular grooves, and the sum of their radii is smaller than the diameter of the metal rod.

[0032] Through the above arrangement, when the metal rod is clamped in the clamping area, there is a gap between the first clamping member 10 and the second clamping member 20, and the clamping force can be further increased by moving toward each other, so that the metal rod can be completely clamped in the clamping area. At the same time, the elastic deformation performance of the metal itself can be squeezed by the first clamping member 10 and the second clamping member 20 to elastically deform, and an elastic reaction force is generated to act on the first clamping member 10 and the second clamping member 20, so that the metal rod can be firmly fixed in the clamping area. If the radius of the first clamping groove 11 and the radius of the second clamping groove 21 are set to be equal to the diameter of the metal rod, then when the metal rod is clamped in the clamping area, the first clamping member 10 and the second clamping member 20 are already in contact and cannot continue to move toward each other to increase the clamping force. The metal rod will be out of the clamping area due to elastic deformation caused by the external force; if the radius of the first clamping groove 11 and the radius of the second clamping groove 21 are set to be larger than the diameter of the metal rod, the metal rod cannot be fixed.

[0033] See also Figures 1 to 5 As shown, in some embodiments of the present invention, the axes of the two cylindrical areas of the clamping area are located in the same horizontal plane.

[0034] Through the above arrangement, the two metal bars can be arranged side by side in the horizontal direction to avoid occupying the space in the vertical direction.

[0035] See also Figures 1 to 5 As shown, in some embodiments of the present invention, the axial length of the first clamping member 10 and the second clamping member 20 in the clamping area is 10 to 14 times, preferably 12 times, the radius of the metal rod.

[0036] Through the above arrangement, when the metal rod needs to form a grounding grid, the second clamping member 20 also needs to have a sufficient contact area with the ground to achieve the grounding function. Therefore, the axial length of the second clamping member 20 in the clamping area is set appropriately to ensure the smooth grounding of the second clamping member 20. In addition, in order to ensure that the metal rod can fully contact the bottom of the second clamping groove 21, a first clamping member 10 with the same size as the second clamping member 20 is provided so that the bottom of the second clamping groove 21 can fully contact the metal rod.

[0037] See also Figures 1 to 5 As shown, in some embodiments of the present invention, the first clamping member 10 includes an integrally formed first clamping portion 12 and a first connecting portion 13, the first clamping groove 11 is formed on the first clamping portion 12, and the second clamping member 20 includes an integrally formed second clamping portion 22 and a second connecting portion 23, the second clamping groove 21 is formed on the second clamping portion 22, and the second connecting portion 23 is connected to the first connecting portion 13.

[0038] Through the above arrangement, the connection between the first connection part 13 and the second connection part 23 is prevented from interfering with the clamping of the metal rod. In addition, the first clamping part 12 and the first connection part 13 are integrally formed, so that there is no connection node between the two, which is more stable, so that the force applied to the first connection part 13 for connecting the second connection part 23 can be transmitted to the first clamping part 12 to the greatest extent; similarly, the second clamping part 22 and the second connection part 23 are integrally formed, so that there is no connection node between the two, which is more stable, so that the force applied to the second connection part 23 for connecting the first connection part 13 can be transmitted to the second clamping part 22 to the greatest extent. In other words, the integrally formed arrangement enables the first clamping part 12 and the second clamping part 22 to firmly clamp the metal rod.

[0039] Specifically, the first clamping member 10 and the second clamping member 20 are completely identical, and the two are symmetrically buckled. The thickness of the first clamping member 10 and the second clamping member 20 is uniform, both 3 mm, so that the first clamping member 10 and the second clamping member 20 will not be greatly deformed when subjected to the reaction force of the metal rod. After the first clamping member 10 and the second clamping member 20 stably clamp the metal rod, the distance between the first connecting portion 13 and the second connecting portion 23 is 1 mm. If the distance is too large, it will occupy space in the vertical direction.

[0040] See also Figures 1 to 5 As shown, in some embodiments of the present invention, both the first connection portion 13 and the second connection portion 23 are provided in two numbers, the two first connection portions 13 are symmetrically provided on opposite sides of the first clamping portion 12 , and the two second connection portions 23 are symmetrically provided on opposite sides of the second clamping portion 22 .

[0041] In this embodiment, the first connecting portion 13 and the second connecting portion 23 correspond one to one. On the one hand, the forces on the two opposite sides of the first clamping member 10 and the two opposite sides of the second clamping member 20 are balanced, so that the metal rod is only subjected to the clamping forces from above and below and is fixed in the clamping area, thereby preventing the metal rod from being damaged due to force displacement. On the other hand, the two first connecting portions 13 and the two second connecting portions 23 are simultaneously subjected to the force of clamping the metal rod, so that the clamping force on the metal rod is greater and the clamping stability is stronger.

[0042] See also Figures 1 to 5 As shown, in some embodiments of the present invention, the metal rod splicing fixture further includes a connecting piece 30 , and the first connecting portion 13 and the second connecting portion 23 are detachably connected via the connecting piece 30 .

[0043] Through the above arrangement, the connecting member 30 connects the first connecting portion 13 and the second connecting portion 23, thereby enabling the first clamping portion 12 and the second clamping portion 22 to move toward each other to clamp the metal rod in the clamping area.

[0044] See also Figures 1 to 5 As shown, in some embodiments of the utility model, a first connecting hole 14 is formed on the first connecting portion 13, and a second connecting hole 24 coaxially connected to the first connecting hole 14 is formed on the second connecting portion 23, and the first connecting portion 13 and the second connecting portion 23 are connected by a connecting member 30 that passes through the first connecting hole 14 and the second connecting hole 24; the upper surface of the first clamping portion 12 is higher than the upper surface of the first connecting portion 13, so that a first height difference area can be formed above the second connecting portion 23, and the connecting member 30 is at least partially located in the first height difference area, and / or the lower surface of the second clamping portion 22 is lower than the lower surface of the second connecting portion 23, so that a second height difference area can be formed below the second connecting portion 23, and the connecting member 30 is at least partially located in the second height difference area.

[0045] In this embodiment, the upper end of the connecting member 30 protrudes from the first connecting portion 13 above the first connecting portion 13, and the first height difference area provides a receiving area for the upper end of the connecting member 30, which can protect the upper end of the connecting member 30; similarly, the lower end of the connecting member 30 protrudes from the second connecting portion 23 below the second connecting portion 23, and the second height difference area provides a receiving area for the lower end of the connecting member 30, which can protect the lower end of the connecting member 30.

[0046] Specifically, the diameters of the first connection hole 14 and the second connection hole 24 are both 5 mm. Figure 3 and Figure 4 As shown, L1, L4, L5 and L8 are all 3 mm, and L2, L3, L6 and L7 are all 2.5 mm to meet the equipment requirements.

[0047] See also Figures 1 to 5 As shown, in some embodiments of the utility model, the first connecting hole 14 and the second connecting hole 24 are set to a plurality corresponding to each other one by one, the plurality of first connecting holes 14 are set to be spaced apart from each other along the extension direction of the first connecting portion 13, the plurality of second connecting holes 24 are set to be spaced apart from each other along the extension direction of the second connecting portion 23, and the connecting members 30 are set to be a plurality corresponding to the first connecting holes 14 and the second connecting holes 24 one by one.

[0048] Through the above arrangement, the connection strength between the first clamping member 10 and the second clamping member 20 can be increased, and the metal rod can be subjected to uniform force in its axial and radial directions, thereby preventing the metal rod from being damaged due to force deviation.

[0049] Specifically, four first connection holes 14 are provided, and every two first connection holes 14 are formed on the same first connection portion 13. The first connection holes 14 formed on the same first connection portion 13 are arranged in a radial direction ( Figure 2The first connection holes 14 formed on different first connection parts 13 are symmetrical with the axial direction ( Figure 2 The second connecting holes 24 correspond to the first connecting holes 14 one by one, so that the metal rod is evenly stressed in its axial and radial directions.

[0050] The first connecting hole 14 and the second connecting hole 24 are both smooth round holes. The connecting member 30 includes a bolt 31 and a nut 32. The bolt 31 is a standard M4 bolt 31. The bolt 31 passes through the second connecting hole 24 and the first connecting hole 14 from bottom to top in sequence. The nut 32 is threadedly connected to the bolt 31. By screwing the nut 32, the distance between the first clamping member 10 and the second clamping member 20 is adjusted, thereby adjusting the clamping degree of the metal rod. The nut 32 is located above the first connection part 13, and a first gasket 40 is arranged between the nut 32 and the first connection part 13. The first gasket 40 is an elastic gasket, so that when the nut 32 is screwed down, it can play a buffering role through the first gasket 40, and form a soft adjustment with the first connection part 13. In addition, the first gasket 40 can also provide a margin for the elastic reaction force of the metal rod, that is, the metal rod can squeeze the first gasket 40 through elastic rebound, so that the metal rod can be clamped in the clamping area in the best stress state; the head of the bolt 31 is located below the second connection part 23, and a second gasket 50 is arranged between the head of the bolt 31 and the second connection part 23. The second gasket 50 is a metal gasket, which increases the contact area between the bolt 31 and the second connection part 23, making the connection of the bolt 31 more stable. The thread adjustment method makes the adjustment range larger and more convenient, and can achieve fine adjustment. Every time the nut 32 is screwed, it can achieve self-locking through the thread match between the nut 32 and the bolt 31 to avoid adjustment failure. The cooperation between the bolt 31 and the nut 32 enables the nut 32 to be fixed in the first connecting hole 14 and the second connecting hole 24. When the metal rod connecting clamp is transported, the first clamp 10 and the second clamp 20 can be connected to form a whole through the connecting piece 30, thereby realizing the complete set transportation of the three and preventing the loss of a single component.

[0051] After the metal rods are connected, the metal rod connecting clamp of the present application pulls one or two metal rods with a force of 16Mpa, and the metal rod and the metal rod connecting clamp do not loosen. In addition, the contact resistance between the metal rods and the metal rod connecting clamp is greater than the resistance of metal rods of the same length formed by welding.

[0052] The utility model also provides a grounding grid, comprising a metal rod and the above-mentioned metal rod connecting clamp, wherein the metal rod connecting clamp is connected to two metal rods.

[0053] In this embodiment, the metal rod connecting clamp of the grounding grid has all the technical solutions and all the technical effects of the above-mentioned metal rod connecting clamp, which will not be repeated here.

[0054] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A metal rod splicing fixture, characterized in that: include: A first clamping member (10), wherein a first clamping groove (11) is formed on the first clamping member (10); as well as A second clamping member (20), wherein a second clamping groove (21) is formed on the second clamping member (20), and the second clamping member (20) is relatively engaged with the first clamping member (10) so that the first clamping groove (11) and the second clamping groove (21) together define a clamping area, and the first clamping member (10) and the second clamping member (20) are configured to clamp and fix the end of one of the two metal rods and the head end of the other metal rod in the clamping area.

2. The metal rod splicing fixture according to claim 1, characterized in that: The clamping area is formed as a cylindrical area and is configured to sequentially accommodate the end of one of the two metal rods and the head of the other; or, The clamping area is formed as an elliptical cylindrical area and is configured to accommodate the end of one of the two metal rods and the head end of the other metal rod side by side; or, The clamping area is formed as two cylindrical areas arranged side by side, and the two cylindrical areas are configured to respectively accommodate the end of one of the two metal rods and the head end of the other one.

3. The metal rod splicing fixture according to claim 2, characterized in that: The first clamping groove (11) and the second clamping groove (21) are both configured as semicircular grooves, and the sum of their radii is smaller than the diameter of the metal rod.

4. The metal rod splicing fixture according to claim 3, characterized in that: The axes of the two cylindrical regions of the clamping region are located in the same horizontal plane; and / or, The axial lengths of the first clamping member (10) and the second clamping member (20) in the clamping area are 10 to 14 times the radius of the metal rod.

5. The metal rod splicing fixture according to any one of claims 1 to 4, characterized in that: The first clamping member (10) comprises an integrally formed first clamping portion (12) and a first connecting portion (13), the first clamping groove (11) being formed on the first clamping portion (12), and the second clamping member (20) comprises an integrally formed second clamping portion (22) and a second connecting portion (23), the second clamping groove (21) being formed on the second clamping portion (22), and the second connecting portion (23) being connected to the first connecting portion (13).

6. The metal rod splicing fixture according to claim 5, characterized in that: The first connecting portion (13) and the second connecting portion (23) are both provided in two numbers, the two first connecting portions (13) are symmetrically arranged on opposite sides of the first clamping portion (12), and the two second connecting portions (23) are symmetrically arranged on opposite sides of the second clamping portion (22).

7. The metal rod splicing fixture according to claim 5, characterized in that: The metal rod connecting clamp further comprises a connecting piece (30), and the first connecting part (13) and the second connecting part (23) are detachably connected via the connecting piece (30).

8. The metal rod splicing fixture according to claim 7, characterized in that: The first connecting portion (13) is formed with a first connecting hole (14), the second connecting portion (23) is formed with a second connecting hole (24) coaxially connected to the first connecting hole (14), and the first connecting portion (13) and the second connecting portion (23) are connected via the connecting member (30) penetrating the first connecting hole (14) and the second connecting hole (24); The upper surface of the first clamping portion (12) is higher than the upper surface of the first connecting portion (13), so that a first height difference region can be formed above the second connecting portion (23), and the connecting member (30) is at least partially located within the first height difference region, and / or the lower surface of the second clamping portion (22) is lower than the lower surface of the second connecting portion (23), so that a second height difference region can be formed below the second connecting portion (23), and the connecting member (30) is at least partially located within the second height difference region.

9. The metal rod splicing fixture according to claim 8, characterized in that: The first connecting holes (14) and the second connecting holes (24) are arranged as a plurality corresponding to each other one by one, the plurality of first connecting holes (14) are arranged at intervals from each other along the extension direction of the first connecting portion (13), the plurality of second connecting holes (24) are arranged at intervals from each other along the extension direction of the second connecting portion (23), and the connecting members (30) are arranged as a plurality corresponding to the first connecting holes (14) and the second connecting holes (24) one by one.

10. A grounding grid, characterized in that: It comprises a metal rod and a metal rod connecting clamp according to any one of claims 1 to 9, wherein the metal rod connecting clamp is connected to two of the metal rods.

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