Relay protection screen cable pressing device

Abstract

The utility model relates to the field of substation cable construction auxiliary equipment, and discloses a relay protection screen cable pressing device which comprises an assembly part, and a metal plate is arranged on one side of the assembly part. The top of the metal plate is provided with a central hole and is fixed on the assembly part through a screw and a nut; the two outer arc plates are connected to the two sides of the metal plate, the two outer arc plates and the metal plate are in a W shape, and the inner arc surfaces of the two outer arc plates are connected with pressing strips; and the two inner arc plates are respectively connected to the inner arc surfaces of the two outer arc plates. According to the utility model, the two connecting pieces are wound and rolled through the rotation of the screws, the tail ends of the connecting pieces are pulled to enable the outer arc plates to deform, and the outer arc plates are used for tightly holding the cable, so that the cable is tightly pressed.

Description

Technical Field

[0001] The utility model relates to the field of auxiliary equipment for substation cable construction, in particular to a cable pressing device for a relay protection screen. Background Art

[0002] Substation is an important part of the power system, and the installation quality of secondary equipment is related to the safe operation of the substation. In the installation of secondary equipment, in addition to meeting the various functions of the equipment, more attention should be paid to the construction process and installation level. Cables are the main carriers for transmitting signals and issuing instructions between various secondary equipment. During the installation of secondary equipment, cable laying is the difficulty and highlight of the construction. The arrangement of cables is based on the premise of complying with their functional requirements, and at the same time, it should meet the process requirements of smoothness, neatness, and beauty. During the construction of the connection between the cable and the relay protection screen, due to the large number of cables in the protection screen, the reasonable fixation of many cables is very important.

[0003] When laying cables, the current mainstream cable fixing and installation method is to use metal pressing sheets to press the cables tightly against the surface of objects, or to use positioning sleeves to fix the cables.

[0004] The existing clamping structures generally have the problems of complicated and cumbersome operation and insufficient ability to tighten and wrap the cables. In the process of clamping the cables, the cables are easy to slip off and pop out from both sides of the metal plate, which not only affects the clamping effect, but also may cause safety hazards. Although the use of positioning sleeves can be used as a solution, it will significantly increase the workload and bring unnecessary trouble and burden to the construction work of the substation. Therefore, a more efficient and convenient clamping structure is urgently needed to solve the existing problems and improve construction efficiency. Utility Model Content

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A cable pressing device for a relay protection screen comprises an assembly part, one side of which is provided with a metal plate;

[0007] The top of the metal plate is provided with a central hole and is fixed to the assembly part by screws and nuts;

[0008] Two outer arc plates are connected to both sides of the metal plate and are in a W shape with the metal plate, and the inner arc surfaces of the two outer arc plates are connected with pressure strips;

[0009] Two inner arc plates, respectively connected to the inner arc surfaces of the two outer arc plates;

[0010] The outer ring of the screw is connected to two connecting pieces, one end of the connecting piece penetrates from one end of the inner arc plate, penetrates from the other end of the inner arc plate and is connected to the surface of the pressure strip.

[0011] The outer arc surface of the outer arc plate is provided with a plurality of tooth grooves so that the outer arc plate can be bent inwards when being pulled.

[0012] A threading hole is provided at one end of the inner arc plate, and the threading hole passes through the inner arc plate to the other end thereof, thereby allowing a connecting piece to pass through.

[0013] One side of the two outer arc plates is provided with a through hole, and the two connecting members pass through the through holes of the corresponding outer arc plates respectively and are connected with the same screw.

[0014] The outer ring of the screw is provided with a metal ring, and correspondingly, the inner wall of the center hole is provided with a center inner groove, and the metal ring is tightly filled in the center inner groove to ensure that the screw rotates stably in the center hole and effectively prevent the screw from escaping from the center hole.

[0015] The inner arc plate is made of anti-slip material, and the pressure strip is made of rubber strip.

[0016] The connecting piece is made of nylon thread.

[0017] Beneficial Effects

[0018] The utility model provides a cable compression device for a relay protection screen. Compared with the prior art, it has the following beneficial effects:

[0019] 1. By rotating the screws to wind and reel the two connectors, the ends of the connectors are pulled to deform the outer arc plate, and the outer arc plate is used to hold the cable tightly, thereby achieving compression of the cable.

[0020] 2. The cables are compressed by the outer arc plate, the operation steps are convenient and quick, the cable wiring efficiency is higher, and the construction cost can be further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure proposed by the utility model.

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure from another viewing angle proposed by the utility model.

[0023] Figure 3 This is a schematic diagram of the main structure proposed by the utility model.

[0024] Figure 4 This is a schematic diagram of the partial cross-sectional structure of the metal plate proposed by the utility model.

[0025] Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0026] The reference numerals in the figure are:

[0027] 10. Assembly parts; 11. Nuts;

[0028] 20. Metal plate; 21. Outer arc plate; 22. Tooth groove; 23. Screw; 24. Metal ring; 25. Center hole; 26. Through hole;

[0029] 30. Inner arc plate; 31. Connector; 32. Pressure strip; 33. Threading hole. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The embodiment of the present application solves the problems of complex and cumbersome operation and insufficient ability to tighten and wrap the cable in the clamping structure by providing a cable clamping device for the relay protection screen. When in use, it is possible to drive the two outer arc plates 21 to bend while controlling the metal plate 20 to approach the assembly 10, so that the cable can be clamped and fixed at the same time by using the metal plate 20, the outer arc plate 21 and the assembly 10.

[0032] The technical solution in the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0033] The two connecting members 31 are wound and rolled up by rotating the screw 23 , and the ends of the connecting members 31 are pulled to deform the outer arc plate 21 , and the outer arc plate 21 is used to hold the cable tightly, thereby achieving compression of the cable.

[0034] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] Reference Figure 1-Figure 5 The cable clamping device of the relay protection screen includes an assembly part 10. A metal plate 20 is provided on one side of the assembly part 10. A center hole 25 is opened on the top of the metal plate 20. A screw 23 is connected in the center hole 25. The top of the screw 23 passes through the assembly part 10 and is threadedly connected with a nut 11. The nut 11 is fixedly installed on the top of the assembly part 10.

[0036] The use of screws 23 and nuts 11 can reduce the installation cost of the cable and speed up the assembly. The assembly part 10 uses the shell of the relay protection screen, and can also use a relay protection box or other objects that can be fixed and provide punching.

[0037] Reference Figure 1 and Figure 3 The two outer arc plates 21 are fixedly connected to both sides of the metal plate 20 and are in a W shape with the metal plate 20. The inner arc surfaces of the two outer arc plates 21 are fixedly connected with a pressure strip 32. The two inner arc plates 30 are respectively connected to the inner arc surfaces of the two outer arc plates 21. The outer ring of the screw 23 is fixedly connected to two connecting members 31. One end of the connecting member 31 passes through one end of the inner arc plate 30, passes through the other end of the inner arc plate 30 and is fixedly connected to the surface of the pressure strip 32.

[0038] This design can control the metal plate 20 to approach the assembly part 10 while driving the two outer arc plates 21 to bend, and the metal plate 20, the outer arc plates 21 and the assembly part 10 can be used to compress and fix the cable at the same time.

[0039] Reference Figure 2 and Figure 3 The outer arc surface of the outer arc plate 21 is provided with a plurality of tooth grooves 22 so that the outer arc plate 21 bends inward when being pulled.

[0040] The two outer arc plates 21 have good bending properties. After the cables are assembled into the two outer arc plates 21, the two ends of the two outer arc plates 21 are tightly held toward the metal plate 20 to achieve all-round compression of the cables.

[0041] Reference Figure 4 A threading hole 33 is provided at one end of the inner arc plate 30, one end of the connecting piece 31 is inserted into one end of the inner arc plate 30, and comes out from the other end of the inner arc plate 30 and is fixedly connected to the surface of the pressure strip 32. The curvature of the threading hole 33 is the same as that of the inner arc plate 30, which is convenient for passing the connecting piece 31.

[0042] Passing through the inner arc plate 30 can prevent the cable from contacting the connector 31 . If the cable squeezes the connector 31 , the connector 31 may become unable to move.

[0043] Reference Figure 4 A through hole 26 is formed on one side of the two outer arc plates 21 , and the two connecting members 31 pass through the through holes 26 of the corresponding outer arc plates 21 and are fixedly connected to the same screw 23 .

[0044] By rotating the screw 23 , the two connecting members 31 can be wound at the same time, and the connecting member 31 can be reeled in.

[0045] Reference Figure 4 The outer ring fixing sleeve of the screw 23 is provided with a metal ring 24, and correspondingly, the inner wall of the center hole 25 is provided with a center inner groove, and the metal ring 24 is tightly filled in the center inner groove to ensure that the screw 23 rotates stably in the center hole 25 and effectively prevents the screw 23 from escaping from the center hole 25.

[0046] Reference Figure 1The inner arc plate 30 is made of anti-skid material, and the pressure strip 32 is made of rubber strip. The rubber strip can provide anti-skid property for the end of the outer arc plate 21. The inner arc plate 30 can use a rubber gasket to provide better anti-skid property when the inner arc plate 30 contacts the cable.

[0047] The connector 31 is made of nylon wire, which has good tear resistance, long service life, strong toughness and is not easy to break. Metal wire can also be used, but the cost of metal wire is high and the flexibility is not as good as nylon wire.

[0048] During use, the screw 23 on the metal plate is passed through the hole on the assembly 10 and threadedly connected to the nut 11, and the two cables are placed on the inner arc surfaces of the two inner arc plates 30 respectively. The screw 23 is turned. The screw 23 not only rotates on the nut 11 but also drives the metal plate 20 to move toward the assembly 10. The screw 23 also drives the two connecting parts 31 to wrap around. When one end of the connecting part 31 is wound, the connecting part 31 at the other end will pull the pressure strip 32. The pressure strip 32 is pulled and drives the outer arc plate 21 to bend inward. That is, while the metal plate 20 drives the two outer arc plates 21 to press the cable against one side of the assembly 10, the two outer arc plates 21 also hold the cable tightly, thereby achieving a compression effect on the cable.

[0049] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0050] By rotating the screw 23 to wind and reel the two connectors 31 , the ends of the connectors 31 are pulled to deform the outer arc plate 21 , and the outer arc plate 21 is used to hold the cable tightly, thereby achieving compression of the cable.

[0051] The cables are compressed by the outer arc plate 21, the operation steps are convenient and quick, the cable wiring efficiency is higher, and the construction cost can be further reduced.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cable clamping device for a relay protection screen, comprising an assembly part (10), characterized in that: A metal plate (20) is provided on one side of the assembly part (10); The metal plate (20) has a center hole (25) at the top and is fixed to the assembly part (10) by means of screws (23) and nuts (11); Two outer arc plates (21) are connected to two sides of the metal plate (20) and are in a W shape with the metal plate (20); inner arc surfaces of the two outer arc plates (21) are both connected to a pressure strip (32); Two inner arc plates (30) are respectively connected to the inner arc surfaces of the two outer arc plates (21); The outer ring of the screw (23) is connected to two connecting pieces (31), one end of the connecting piece (31) penetrates from one end of the inner arc plate (30), passes out from the other end of the inner arc plate (30) and is connected to the surface of the pressure strip (32).

2. The cable compression device for the relay protection screen according to claim 1 is characterized in that: The outer arc surfaces of the two outer arc plates (21) are each provided with a plurality of tooth grooves (22) so that the outer arc plates (21) are bent inwards when being pulled.

3. The cable compression device for the relay protection screen according to claim 1 is characterized in that: A threading hole (33) is formed at one end of the inner arc plate (30), and the threading hole (33) passes through the inner arc plate (30) to the other end thereof, thereby allowing the connecting piece (31) to pass through.

4. The cable compression device for the relay protection screen according to claim 1 is characterized in that: A through hole (26) is provided on one side of the two outer arc plates (21), and the two connecting members (31) respectively pass through the through holes (26) of the corresponding outer arc plates (21) and are connected to the same screw (23).

5. The cable compression device for the relay protection screen according to claim 1 is characterized in that: The outer ring of the screw (23) is provided with a metal ring (24), and correspondingly, the inner wall of the center hole (25) is provided with a circular inner groove, and the metal ring (24) is tightly filled in the circular inner groove, so as to ensure that the screw (23) rotates stably in the center hole (25) and effectively prevent the screw (23) from escaping from the center hole (25).

6. The cable compression device for the relay protection screen according to claim 1 is characterized in that: The inner arc plate (30) is made of an anti-slip material, and the pressure strip (32) is made of a rubber strip.

7. The cable compression device for the relay protection screen according to claim 1 is characterized in that: The connecting piece (31) is made of nylon thread.

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