A multifunctional busbar fixing device
By designing a multi-function busbar fixing device and using a combined structure of a fixing base, fastening device and clamping block, the problem of insufficient flexibility and economicality of the busbar fixing device in the prior art is solved, and the flexible fixing and position adjustment of the busbar is realized. Improves installation convenience and adaptability.
Patent Information
- Application Number
- CN201810185230.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2018-03-07
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2038-03-07
AI Technical Summary
The existing busbar fixing devices have poor flexibility and economicality, making it difficult to achieve flexible fixing and position adjustment of busbar without damaging the handbag insulation.
Using a multi-functional busbar fixing device including a fixing base, fastening device and clamping block, the busbar is flexible in fixing and position adjustment through bolt connection and limiting structure. The clamp thickness is used to separate the busbars and can be adapted to different construction through modular construction. Thickness of busbar.
It realizes flexible fixing and position adjustment of the busbar, which facilitates and quickly lifts or lowers the busbar without reloading and unloading the fixing clip, adapts to busbars of different thicknesses, and improves the economical and flexibility of installation.
Smart Images
Figure CN110247306B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of busbar fixing, and in particular relates to a multifunctional busbar fixing device. Background Art
[0002] As electrical equipment for power transmission, distribution and energy conversion, low-voltage switchgear is suitable for power plants, petroleum, chemical industry, metallurgy, textile, high-rise buildings and other industries. The busbar refers to the copper or aluminum bar connecting the main switch in the cabinet and the switches in each branch circuit in the power supply system. It is one of the common components in low-voltage switchgear. Since the busbar mainly acts as a conductor, its insulation, disassembly, fixing, spacing and other operations are crucial to the operation of the switchgear.
[0003] At present, the fixing devices used for busbar fixing in switch cabinets are mostly integrated or slot-fixed, that is, the width of the cavity for inserting the busbar in the fixing device is fixed or the adjustable range is very small, and if the position of the busbar needs to be moved, the fixing clips often need to be reinstalled and removed, which is inconvenient to operate and lacks flexibility and economy.
[0004] Chinese patent application 201320462765.8 discloses a combined busbar clamp, including a fixed end plate, a pad, and an insulating pad. A pad group consisting of pads of different thicknesses is sleeved on the outer wall of the busbar, which solves the problem of fixing the busbar in the electrical on-off test circuit without damaging the hand-wrapped insulation, greatly improving the fastening quality of the busbar; at the same time, an insulating pad is set between adjacent two-phase busbars to solve the problem of insufficient creepage distance of the busbar clamp. However, the invention separates the busbars by multiple pads, and its installation requires the setting of through holes on the busbar, which is relatively cumbersome to operate.
[0005] In addition, the technical problem solved by the patent is different from the technical problem to be solved by the present patent application. The technical problems solved by the above-mentioned prior art are the problem of fixing the busbar in the on-off test circuit of the electrical appliance without damaging the insulation of the hand package and the problem of insufficient creepage distance of the busbar clamp, while the technical problem mainly solved by the present patent application is the poor flexibility and economy of the existing busbar fixing device. Summary of the invention
[0006] The purpose of the present invention is to provide a novel multifunctional busbar fixing device to solve the problem that the busbar fixing device in the prior art has poor flexibility and economy.
[0007] Specifically, the present invention is implemented by adopting the following technical solutions:
[0008] A multifunctional busbar fixing device, characterized in that it includes a fixing base, a fastening device and at least two clamping blocks, wherein the fixing base and the clamping blocks are provided with through holes and are connected together by a fastening device having a locking function, and the clamping block arranged adjacent to the fixing base is the bottom clamping block; two adjacent clamping blocks clamp and fix one side edge of the busbar, and the two sets of fixing devices work together to fix the busbar; the thickness of the clamping block itself is used to separate the busbar.
[0009] Furthermore, the fastening device is connected by bolts.
[0010] Furthermore, a waist-shaped nut is provided at one end of the bolt extending below the fixed base, a clamping arm is provided on the waist-shaped nut, and a groove is provided at a position corresponding to the clamping arm of the bottom clamping block. The clamping arm and the groove cooperate to achieve the limitation of the waist-shaped nut and the bottom clamping block.
[0011] Furthermore, a clamping foot is provided on a side of the fixed base away from the clamping block.
[0012] Furthermore, a first limiting boss for abutting against the bottom clamp block is provided at the periphery of the through hole position on the other side of the fixed base, and limiting grooves are provided at positions corresponding to the first limiting boss on both sides of the through hole of the bottom clamp block.
[0013] Furthermore, an outer annular cylinder and an inner annular cylinder are respectively provided at the through-hole positions on both sides of the clamping block, and the inner annular cylinder of one clamping block is inserted into the outer annular cylinder of another adjacent clamping block to achieve connection between adjacent clamping blocks.
[0014] Furthermore, a limiting groove is provided on the periphery of the inner annular cylinder, and a second limiting boss is provided at a position on the edge of the outer annular cylinder corresponding to the limiting groove. When two adjacent clamping blocks are assembled, the second limiting boss is just stuck in the limiting groove to play a limiting role.
[0015] Furthermore, the limiting groove is arc-shaped, and the first limiting boss is dot-shaped or arc-shaped with a length less than the length of the limiting groove in the bottom clamp block. When the fixed base and the clamp block are connected with each other, the first limiting boss is just stuck in the limiting groove of the clamp block and can be rotated as needed.
[0016] Furthermore, the limiting groove is an arc-shaped groove, and the second limiting boss is an arc-shaped protrusion matched with the limiting groove.
[0017] Furthermore, the material used for the fixed base and the clamping block is unsaturated polyester resin with glass fiber or other materials with insulation effect.
[0018] The beneficial effects of the present invention are as follows:
[0019] The fixed base and the clamping block are connected and fastened by a fastening device. One side of the busbar is clamped between each two adjacent clamping blocks. The two sets of fixing devices cooperate to fix the busbar. The busbar can be installed at any position without opening holes in the copper busbar, and copper busbars of different thicknesses (such as 6mm, 8mm, 10mm, etc.) can be fixed, which is easy to adjust, convenient and economical. In the case of multi-layer busbars, modular building blocks can be used for construction, which is convenient and quick to install. In addition, the invention also has the function of lifting or lowering the busbar. When the busbar needs to be moved up and down, it can be lifted or lowered together with the busbar through the fixing device without having to reload and unload, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is the front view of the invented multifunctional busbar fixing device.
[0021] Figure 2 It is the left view of the invented multifunctional busbar fixing device.
[0022] Figure 3 It is a top view of the invented multifunctional busbar fixing device.
[0023] Figure 4 The invention is a stereoscopic diagram of a multifunctional busbar fixing device.
[0024] Figure 5 It is the front view of the fixed base in the fixture.
[0025] Figure 6 It is the left side view of the fixed base in the fixture.
[0026] Figure 7 It is a top view of the fixed base in the fixing device.
[0027] Figure 8 It is a three-dimensional diagram of a fixed base in a fixing device.
[0028] Fig. 9 It is the front view of the clamp in the fixture.
[0029] Fig.10 It is the left side view of the clamp in the fixture.
[0030] Fig.11 It is a top view of the clamp in the fixture.
[0031] Fig.12 It is a three-dimensional diagram of the clamping block in the fixing device.
[0032] Fig.13 This is a usage status diagram of the multifunctional busbar fixing device.
[0033] Numbers in the figure: 1-fixed base; 2-clamping block; 3-bolt; 31-waisted nut; 32-clamping arm; 11-first limiting boss; 12-clamping foot; 13-first through hole; 21-outer annular cylinder; 22-inner annular cylinder; 23-second limiting boss; 24-limiting groove; 25-second through hole; 26-groove. DETAILED DESCRIPTION
[0034] The present invention is further described in detail below in conjunction with embodiments and with reference to the accompanying drawings.
[0035] Embodiment 1:
[0036] See also Figure 1-4 The multifunctional busbar fixing device is composed of a fixing base 1, a clamping block 2, a bolt 3 and a waist-shaped nut 31. The bolt 3 connects and tightens the fixing base 1 and the four clamping blocks 2. Each two clamping blocks 2 can fix one side of a layer of busbars. Figure 4 The fixing devices shown can work together to fix three layers of busbars at the same time, and separate the busbars by the thickness of the clamping block 2. When the busbar needs to be lifted or lowered, the clamped busbar can be driven to perform the corresponding operation by lifting or lowering the fixing device, which is convenient and quick. It should be noted that the number of clamping blocks in the present invention is not limited to four in this embodiment, and the specific number can be determined according to the number of busbars to be fixed. The following is only an explanation of the case of four clamping blocks.
[0037] See also Figure 2-3 A waist-shaped nut 31 is provided at one end of the bolt 3 extending from the bottom of the fixed base 1, and two clamping arms 32 are provided on both sides of the screw hole of the waist-shaped nut 31. The two clamping arms 32 are axially symmetrical with respect to the central axis of the two long sides of the waist-shaped nut 31.
[0038] For detailed structure of the fixed base 1, see Figure 5-8, a fixed base 1 has two clamping feet 12, which can be clamped on other plate-like components or busbars of equal width in the switch cabinet (hereinafter only C-type plate-like components are used as examples); on both sides of the first through hole 13 on the side of the fixed base 1 close to the clamp block 2, there are two dot-shaped first limiting bosses 11, which are centrally symmetrical with respect to the first through hole 13. The first limiting boss 11 on the fixed base 1 can be a dot-shaped one as shown in the figure, or it can be an arc with a length less than the length of the arc-shaped limiting groove on the clamp block 2. When the fixed base 1 and the clamp block 2 are perpendicular to each other, the two first limiting bosses 11 are just clamped on the top of the two arc-shaped limiting grooves 24, so that while ensuring the limiting effect, the clamp block 2 can rotate relative to the fixed base 1 with the bolt 3 as the axis. Preferably, the arc of the limiting groove 24 is 90°, and the first limiting boss 11 on the fixed base 1 is in the shape of a dot. When the fixed base 1 and the clamping block 2 are installed perpendicular to each other, the two first limiting bosses 11 are just stuck at the two vertices of the limiting groove 24, and the clamping block 2 and the fixed base 1 can rotate 90° until the fixed base 1 and the clamping block 2 overlap each other. It should be noted that the matching limiting structure of the limiting boss on the fixed base 1 and the limiting groove on the clamping block 2 is not limited to the above example of this embodiment. The limiting boss on the fixed base 1 can be set as a limiting groove, and the corresponding limiting groove on the clamping block 2 can be set as a limiting boss, as long as the purpose of the present invention can be achieved.
[0039] The detailed structure of the clamp block 2 is shown in Figure 9-12, a second through hole 25 is provided at the center of the clamp block 2, and two symmetrical grooves 26 are provided on the second through hole 25, which are used to clamp the two clamping arms 32 of the waist-shaped nut 31, and the two grooves 26 are axially symmetrical with respect to the short side center axis of the clamp block 2. It should be noted that the two clamping arms 32 on the waist-shaped nut 31 and the grooves 26 on the second through hole 25 can also be arranged not in an axially symmetrical manner, that is, they can be arranged at a certain angle, as long as the clamping arms 32 and the grooves 26 cooperate to achieve the rotation limit of the waist-shaped nut 31. The side of the clamp block 2 close to the fixed base 1 extends outwardly a section of the inner annular cylinder 22, whose inner diameter is equal to or slightly larger than the inner diameter of the second through hole 25, and whose outer diameter is equal to or slightly smaller than the inner diameter of the first through hole 13 of the fixed base 1; the side of the clamp block 2 away from the fixed base 1 extends outwardly a section of the outer annular cylinder 21, whose inner diameter is equal to or slightly larger than the outer diameter of the inner annular cylinder 22. In this way, the inner annular cylinder 22 can be inserted into the first through hole 13 of the fixed base 1 or the outer annular cylinder 21 of the lower clamping block 2. After the inner annular cylinder 22 is inserted into the outer annular cylinder 21 of the lower clamping block 2, the spacing between adjacent clamping blocks 2 can ensure that the busbar is clamped therein. Preferably, the height of the outer annular cylinder 21 is equal to the height of the inner annular cylinder 22 and is less than the thickness of the busbar. When the lower clamping block is sheathed over the upper clamping block, a distance will be separated between the two clamping blocks. This distance should be less than the thickness of the busbar. When the fixed base 1 is connected and locked with the two clamping blocks 2 by bolts 3, the busbar can be clamped. When multiple layers of busbars need to be fixed, the number of clamping blocks 2 needs to be increased accordingly. All clamping blocks 2 are connected together with the fixed base 1 by bolts 3, so that multiple layers of busbars can be fixed at the same time, and the thickness of the clamping blocks 2 themselves can separate the busbars by a certain distance. The periphery of the inner annular cylinder 22 is provided with a limiting groove 24, and a second limiting boss 23 is provided at a position corresponding to the limiting groove 24 on the edge of the outer annular cylinder 21. When two adjacent clamping blocks are assembled, the second limiting boss 23 is just stuck in the limiting groove 24 to play a limiting role. As a preferred implementation of this embodiment, there is a symmetrical arc-shaped limiting groove 24 on each side of the inner annular cylinder 22 on the clamping block 2, and the arc of the arc-shaped limiting groove 24 is preferably 90°. There are two symmetrical arc-shaped second limiting bosses 23 at the corresponding position of the edge of the outer annular cylinder 21. When two adjacent clamping blocks 2 are assembled, the second limiting boss 23 is just stuck in the limiting groove 24 and completely matches the limiting groove 24. In this way, when fixing the busbar, it can be ensured that there will be no misalignment between the two adjacent clamping blocks. It should be noted that the number, shape, position relationship, etc. of the limiting groove 24 and the second limiting boss 23 are not limited to the above examples, as long as the purpose of the present invention can be achieved. For example, the limiting groove on the inner annular cylinder 22 can be set as a limiting boss, and the corresponding limiting boss on the outer annular cylinder 21 can be set as a limiting groove; the number of limiting bosses and limiting grooves can be one, two or more, and the shape can be other shapes except arc, as long as the limiting purpose of the present invention can be achieved.
[0040] The connection method of the present invention is not limited to bolt connection, and all connection methods that can be thought of by technicians in the technical field to which the invention belongs that can connect the fixed base and the clamping block in series and have a locking effect are acceptable.
[0041] The material used for the fixed base and the clamping block in the present invention is unsaturated polyester resin with glass fiber added, and other materials with insulating effect can be used.
[0042] The installation method of the multifunctional busbar fixing device is carried out according to the following steps:
[0043] (1) Place the fixed base 1 and the clamping block 2 on top of each other, connect and tighten the fixed base 1 and the clamping block 2 through the bolts 3 and the waist-shaped nuts 31, and at this time, the two clamping arms 32 of the waist-shaped nut 31 are placed in the grooves 26 of the clamping block 2, so that the length directions of the waist-shaped nut 31 and the clamping block 2 are perpendicular to each other, and the length directions of the fixed base 1 and the clamping block 2 are parallel to each other; insert the fixing device into the C-shaped plate-like component close to one side edge of the busbar, at this time, the two clamping feet 12 of the fixed base 1 are stuck on the outside of the C-shaped plate-like component, and the waist-shaped nut extends into the groove of the C-shaped plate-like component, and the gap between each adjacent two clamping blocks 2 is aligned with the position of the busbar. At this time, the clamping blocks 2 are located on both sides of the busbar, and their length directions are parallel to the length direction of the busbar.
[0044] (2) Use an Allen wrench to loosen the bolts until the clamping block 2 can rotate relative to the fixed base 1;
[0045] (3) The four clamping blocks 2 are rotated 90° relative to the fixed base 1, so that the length direction of the clamping blocks 2 is perpendicular to the edge of one side of the busbar, and each two adjacent clamping blocks 2 clamp one side of the busbar. At the same time, due to the rotation of the clamping blocks 2 at the bottom layer, the grooves 26 thereof drive the clamping arms 32 of the waist-shaped nut 31 to make the waist-shaped nut 31 also rotate 90°. After the rotation, the length direction of the waist-shaped nut 31 is parallel to the length direction of the fixed base 1, and the two long sides of the waist-shaped nut 31 are clamped in the opening of the C-shaped plate component, so that the fixed base 1 is fixed on the C-shaped plate component;
[0046] (4) Use a wrench to tighten bolt 3 so that clamp block 2 clamps the busbar. Fig.13 shown.
[0047] Although the present invention has been disclosed as above with preferred embodiments, the embodiments are not intended to limit the present invention. Any equivalent changes or modifications made without departing from the spirit and scope of the present invention also belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the content defined by the claims of this application.
Claims
1. A multifunctional busbar fixing device, characterized in that: It comprises a fixed base, a fastening device and at least two clamping blocks, wherein the fixed base and the clamping block are provided with through holes, and are connected together by a fastening device with a locking function, and the clamping block arranged adjacent to the fixed base is the bottom clamping block; the two adjacent clamping blocks clamp and fix one side edge of the busbar, and the two sets of fixing devices work together to fix the busbar; the thickness of the clamping block itself is used to separate the busbar; a clamping foot is arranged on the side of the fixed base away from the clamping block, and a first limiting boss for abutting against the bottom clamping block is arranged on the periphery of the through hole position on the other side of the fixed base, and limiting grooves are arranged at positions corresponding to the first limiting bosses on both sides of the through hole of the bottom clamping block; the limiting grooves are arc-shaped, and the first limiting bosses are arranged on the periphery of the through hole of the bottom clamping block. A limiting boss is in the shape of a dot or an arc whose length is less than the length of the limiting groove in the bottom clamping block. When the fixed base and the clamping block are connected with each other, the first limiting boss is just stuck in the limiting groove of the clamping block and can be rotated as needed; the fastening device is connected by bolts, and the end of the bolt extending below the fixed base is provided with a waist-shaped nut, and a clamping arm is provided on the waist-shaped nut. A groove is provided at the position of the bottom clamping block corresponding to the clamping arm, and the clamping arm and the groove cooperate to achieve the limitation of the waist-shaped nut and the bottom clamping block; the fixed base is fixed on the C-shaped plate component by clamping the two clamping feet of the fixed base on the outside of the C-shaped plate component, and the two long sides of the waist-shaped nut are clamped in the opening of the C-shaped plate component.
2. The multifunctional busbar fixing device according to claim 1, characterized in that: An outer annular column and an inner annular column are respectively arranged at the through-hole positions on both sides of the clamping block, and the inner annular column of one clamping block is inserted into the outer annular column of another adjacent clamping block to realize the connection between adjacent clamping blocks.
3. The multifunctional busbar fixing device according to claim 2, characterized in that: The limiting groove is located at the periphery of the inner annular cylinder, and a second limiting boss is provided at the position of the edge of the outer annular cylinder corresponding to the limiting groove. When two adjacent clamping blocks are assembled, the second limiting boss is just stuck in the limiting groove to play a limiting role.
4. The multifunctional busbar fixing device according to claim 3 is characterized in that: The limiting groove is an arc-shaped groove, and the second limiting boss is an arc-shaped protrusion matched with the limiting groove.
5. The multifunctional busbar fixing device according to any one of claims 1 to 4, characterized in that: The material used for the fixed base and the clamping block is unsaturated polyester resin with glass fiber or other materials with insulation effect.