CN210111536U

CN210111536U - Combined bus clamp for low-voltage switch cabinet

Info

Publication number: CN210111536U
Application number: CN201921021302.1U
Authority: CN
Inventors: 朱世荣; 俞杰
Original assignee: Shanghai General Radio And Television Engineering Co Ltd; Shanghai Radio And Television Electric (group) Co Ltd
Current assignee: Shanghai General Radio And Television Engineering Co Ltd; Shanghai Radio And Television Electric (group) Co Ltd
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2020-02-21
Anticipated expiration: 2029-07-01

Abstract

The utility model discloses a combined bus-bar clamp for a low-voltage switch cabinet, which relates to the technical field of low-voltage complete switch equipment and comprises a bus-bar clamp, wherein the bus-bar clamp comprises two clamping pieces and a connecting screw rod for connecting the two clamping pieces, the clamping pieces comprise a supporting frame and a plurality of bus-bar fixing blocks, a plurality of clamping grooves are arranged on the bus-bar fixing blocks, a plurality of positioning holes and a plurality of clamping holes are uniformly arranged on the supporting frame along the length direction of the supporting frame at intervals, positioning columns are arranged on the bus-bar fixing blocks corresponding to the positioning holes, elastic buckles are correspondingly inserted in the positioning holes and are tightly propped against the supporting frame after being clamped in the clamping holes, the elastic buckles are correspondingly clamped in the clamping holes, and the clamping holes are stretched out to be tightly propped against the surface of the supporting frame after being clamped in the clamping holes, so that the supporting frame is stably, thereby reducing the operation procedures and improving the working efficiency.

Description

Combined bus clamp for low-voltage switch cabinet

Technical Field

The utility model relates to a low pressure complete sets switchgear technical field, more specifically say, it relates to a low-voltage switchgear is with combination formula generating line clamp.

Background

The low-voltage complete switch equipment (short for switch cabinet) is generally suitable for power, distribution and motor control centers of low-voltage distribution systems of power plants, substations, petrochemical engineering, high-rise buildings, commercial buildings and the like, and is used for electric energy conversion, distribution and control of capacitance compensation and the like. In order to ensure the safety of the switch cabinet, an insulated bus clamp is arranged in the cabinet body and is used for fixing a bus (busbar) to prevent major accidents and property loss caused by short circuit due to dynamic thermal stability. With the wide application of the bus bar clamp in the power distribution industry, the bus bar clamp is an indispensable insulation support in the switch cabinet.

The switch cabinet power distribution system in the prior art has more busbar specifications, and when the switch cabinet power distribution system is used in different power distribution system schemes, the system current and the bus specification are changed, the bus specification and the number of different currents are different, a proper bus clamp needs to be selected, and the variety of the bus clamps which need to be used is various.

The current chinese patent with publication number CN205960582U discloses a novel combined bus frame, which comprises a support frame, a bus mounting plate, a magnetic isolation gasket and a connecting column, wherein the support frame is provided with one or more bus mounting plate clamping grooves, the bus mounting plate is transversely provided with one or more transverse bus clamping grooves, the support frame is connected with the support frame through the connecting column, the magnetic isolation gasket is arranged between the connecting column and the support frame, and the bus mounting plate is detachably connected with the support frame.

Among the above-mentioned technical scheme, the generating line presss from both sides the sheath draw-in groove and the support frame joint through the generating line, thereby realize dismantling the connection, the generating line corresponds the chucking in the horizontal generating line draw-in groove of generating line clamp sheath, when needs take out the generating line from the generating line clamp sheath draw-in groove, the in-process that operating personnel application of force broke away from with the generating line from horizontal generating line draw-in groove takes out the generating line clamp sheath from the generating line clamp sheath draw-in groove earlier easily, lead to increasing the work of dismantling, in addition, the generating line presss from both sides the joint position of sheath and generating line clamp sheath draw-in groove and is difficult to confirm, lead to the horizontal generating line draw-in groove of upper and lower generating line clamp sheath to misplace.

SUMMERY OF THE UTILITY MODEL

To the problem that the aforesaid was proposed, the utility model aims to provide a low-voltage switchgear is with combination formula generating line clamp, the setting up of locating hole and reference column makes the generating line fixed block accurate to be installed on the support frame, reduces operating personnel's debugging work, and elastic buckle's setting increases the stability of being connected between generating line fixed block and the support frame, and concrete scheme is as follows:

the utility model provides a low tension switchgear is with combination formula bus-bar clamp, includes the bus-bar clamp, the bus-bar clamp includes two clamping piece of mutually supporting and connects two the connecting screw of clamping piece, the clamping piece includes support frame and a plurality of generating line fixed block, a plurality of chucking grooves have been seted up on the generating line fixed block, a plurality of locating holes and a plurality of joint hole have been seted up at even interval on its length direction to the support frame, correspond on the generating line fixed block the locating hole is equipped with the reference column, the generating line fixed block corresponds the joint hole is equipped with elastic buckle, the reference column corresponds to insert and locates in the locating hole, the elastic buckle joint in behind the joint hole with the support frame supports.

By the technical scheme, the positioning columns on the bus fixing blocks are correspondingly inserted into the positioning holes on the supporting frame, meanwhile, the elastic buckles are correspondingly clamped in the clamping holes, so that the plurality of bus fixing blocks are accurately arranged on the supporting frame, when the two clamping pieces are connected together through the connecting screw rod, the clamping grooves on the two clamping pieces are aligned to form a space for installing the bus, the possibility of dislocation of the clamping grooves on the two clamping pieces is reduced, thereby reducing the debugging work of operators, and the elastic buckle is tightly clamped in the clamping hole and then extends out of the clamping hole to be propped against the surface of the supporting frame, when an operator applies force to separate the bus from the transverse bus clamping groove, the support frame is stably connected with the bus fixing block, the bus is directly separated from the transverse bus clamping groove, the support frame is prevented from being separated from the bus fixing block by mistake in the process of dismounting the bus, and therefore the process of reinstalling the support frame and the bus fixing block is reduced.

Furthermore, the elastic buckle comprises a deformation section and a butting section which are integrally connected, the bus fixing block is provided with a deformation groove, the deformation section is arranged in the deformation groove, and one end of the deformation section is fixedly connected with the bus fixing block.

Through above-mentioned technical scheme, the setting in deformation groove provides the deformation space for the deformation section, and the deformation section takes place to warp when the joint hole is aimed at to tight section on the elasticity buckle and produces crooked drive and support the skew chucking of tight section in the joint hole, realizes the chucking of elasticity buckle and support frame for the elasticity buckle is connected stably with the support frame.

Further, the both ends of generating line fixed block along its length direction all are equipped with elasticity buckle, correspond every on the support frame the generating line fixed block all is equipped with two joint holes.

Through above-mentioned technical scheme, two elasticity buckles chucking simultaneously on the support frame for the more stable installation of generating line is on the support frame.

Furthermore, the bus fixing block is fixedly connected with a limiting skirt edge on the side face where the positioning column is located, the limiting skirt edge is arranged along the length direction of the bus fixing block, and two sliding grooves which are connected with the support frame in a sliding mode are formed between the limiting skirt edges.

Through the technical scheme, the bus fixing block slides on the support frame through the sliding groove due to the arrangement of the sliding groove, so that the bus fixing block can be accurately aligned with the positioning hole in the sliding process, and the support frame and the elastic buckle can be clamped tightly.

Furthermore, the section of the support frame perpendicular to the length direction of the support frame is U-shaped, one side of the support frame far away from the opening is provided with a closed section, and the positioning hole and the clamping hole are arranged on the closed section.

Through the technical scheme, the support frame is in a regular shape integrally, the bus fixing block can slide smoothly on the support frame along the path of the support frame conveniently, and the support frame and the bus fixing block can be mounted conveniently.

Furthermore, a plurality of threaded holes are uniformly formed in the closed section at intervals, and threaded sections matched with the threaded holes are formed in the two ends of the connecting screw in the length direction.

Through above-mentioned technical scheme, connecting screw cooperates with the screw hole, can dismantle two clamping pieces and connect into whole, stabilizes the space that the chucking formed in two clamping pieces with the generating line.

Furthermore, the abutting section is provided with a guide inclined plane corresponding to the clamping hole.

Through the technical scheme, the arrangement of the guide inclined plane enables the abutting section to smoothly enter the clamping hole along the guide inclined plane, and the complexity of operation is reduced.

Furthermore, the clamping groove is U-shaped.

Through above-mentioned technical scheme, chucking groove and generating line shape adaptation, through the mechanical cooperation of connecting screw and two clamping pieces, the equipment is whole, makes things convenient for the generating line to put into two chucking grooves to improve the protection intensity to the generating line.

Compared with the prior art, the beneficial effects of the utility model are as follows:

(1) by arranging the positioning holes and the positioning columns, the positioning columns are correspondingly inserted into the positioning holes, so that the bus fixing blocks are accurately and correspondingly installed on the supporting frame, and meanwhile, the elastic buckles are tightly clamped in the clamping holes and abut against the supporting frame, so that the supporting frame and the bus fixing blocks are stably connected, the supporting frame is prevented from being separated from the bus fixing blocks by mistake in the process of dismounting the bus, and a process of reinstalling the supporting frame and the bus fixing blocks is added;

(2) through setting up the guide inclined plane, the setting of guide inclined plane makes to support in the tight section smoothly gets into the joint hole along the guide inclined plane, reduces the complexity of operation.

Drawings

Fig. 1 is an overall schematic view of an embodiment of the present invention;

FIG. 2 is a schematic view showing the structure of the supporting frame;

FIG. 3 is a schematic view showing a structure of a bus bar fixing block;

fig. 4 is a schematic view showing the structure of the connection screw.

Reference numerals: 1. a bus bar clamp; 2. a clamping member; 21. a support frame; 211. a closing section; 22. a bus fixing block; 221. a clamping groove; 222. a deformation groove; 3. connecting a screw rod; 31. a threaded segment; 4. positioning holes; 5. a clamping hole; 6. a positioning column; 7. elastic buckle; 71. a deformation section; 72. a resisting section; 721. a guide ramp; 8. a limiting skirt edge; 9. a sliding groove; 10. a threaded bore.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

The bus bar refers to a common passage to which a plurality of devices are connected in parallel branches. In an electric power system, a bus bar connects current-carrying branch circuits in a distribution device together to collect, distribute and transmit electric energy, the bus bar is mostly flat, and in a switch cabinet, in order to ensure safe electricity utilization, a special bus bar clamp is needed to install the bus bar.

As shown in fig. 1, a low-voltage switchgear is with combination formula bus-bar clamp, including bus-bar clamp 1, bus-bar clamp 1 includes two clamping pieces 2 that mutually support and connects two clamping pieces 2's connecting screw 3, and clamping piece 2 includes support frame 21 and a plurality of generating line fixed block 22, and support frame 21 is rectangular form, is formed by steel sheet processing. In this embodiment, four bus fixing blocks 22 are arranged along the length direction of the support frame 21, four clamping grooves 221 are formed in one end face of each bus fixing block 22, and the clamping grooves 221 are U-shaped and used for clamping the buses.

As shown in fig. 2, the cross-section of the support frame 21 perpendicular to its length direction is "u" shaped, the support frame 21 has a plurality of positioning holes 4 and a plurality of locking holes 5 uniformly spaced along its length direction, one side of the support frame 21 away from the opening is a closed section 211, and the positioning holes 4 and the locking holes 5 are disposed on the closed section 211. The supporting frame 21 is provided with three positioning holes 4 corresponding to each bus fixing block 22, the bus fixing blocks 22 are integrally connected with three positioning columns 6 corresponding to the positioning holes 4, the positioning columns 6 are located on the opposite end faces of the end faces where the clamping grooves 221 are located, and when the positioning columns 6 are correspondingly inserted into the positioning holes 4, the bus fixing blocks 22 are correspondingly and accurately located on the supporting frame 21.

As shown in fig. 3, the supporting frame 21 is provided with two clamping holes 5 corresponding to each busbar fixing block 22, the busbar fixing blocks 22 are provided with elastic buckles 7 corresponding to the clamping holes 5 along both ends of the length direction thereof, each elastic buckle 7 includes a deformation section 71 and a resisting section 72 which are integrally connected, deformation grooves 222 are formed in both side surfaces of the busbar fixing block 22 in the length direction, the deformation sections 71 are located in the deformation grooves 222, one ends of the deformation sections 71 far away from the resisting section 72 are fixedly connected with the busbar fixing blocks 22, and the resisting sections 72 are higher than the height of the end surfaces where the positioning columns 6 are located.

The abutting section 72 is provided with a guide inclined surface 721 corresponding to the clamping hole 5, when the positioning post 6 is inserted into the positioning hole 4, the abutting section 72 enters the clamping hole 5, the abutting section 72 gradually extends out of the clamping hole 5 along the guide inclined surface 721, and the deformation section 71 is inclined in the deformation groove 222 until the abutting section 72 completely extends out of the clamping hole 5 and abuts against the surface of the support frame 21, so that the bus fixing block 22 is stably connected to the support frame 21.

As shown in fig. 3, a limiting skirt 8 is fixedly connected to the side surface of the bus fixing block 22 where the positioning column 6 is located, the limiting skirt 8 is arranged along the length direction of the bus fixing block 22, two sliding grooves 9 in sliding connection with the support frame 21 are formed between the two limiting skirts 8, and the width of each sliding groove 9 is greater than that of the support frame 21, so that the bus fixing block 22 can slide on the support frame 21 through the sliding grooves 9, and the positions of the positioning hole 4 and the positioning column 6 can be conveniently confirmed.

As shown in fig. 4, threaded holes 10 are uniformly spaced on the closed section 211, and threaded sections 31 adapted to the threaded holes 10 are respectively formed at both ends of the connecting screw rod 3 in the length direction. When the bus is installed in the two clamping pieces 2, the bus is firstly clamped in the clamping grooves 221 of the bus fixing block 22 in the two clamping pieces 2, then the two ends of the connecting screw rod 3 are respectively screwed in the threaded holes 10 in the two supporting frames 21, and the two ends of the connecting screw rod 3 are respectively fastened on the supporting frames 21 by using the adaptive nuts, so that the bus is stably installed on the bus fixing block 22 to assemble the high-strength bus clamping device.

The utility model discloses in, generating line fixed block 22 adopts PC + fire-retardant V0 level material to mould plastics and forms, has higher insulating properties, and toughness is good, does not absorb water, can use under the more abominable condition.

The utility model discloses in, connecting screw 3 adopts no magnetism stainless steel material processing to form, can effectively reduce electromagnetic induction (vortex) in heavy current distribution system.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A combined bus-bar clamp for a low-voltage switch cabinet comprises a bus-bar clamp (1), wherein the bus-bar clamp (1) comprises two mutually matched clamping pieces (2) and a connecting screw rod (3) for connecting the two clamping pieces (2), the clamping piece (2) comprises a supporting frame (21) and a plurality of bus fixing blocks (22), a plurality of clamping grooves (221) are formed in the bus fixing blocks (22), it is characterized in that the supporting frame (21) is provided with a plurality of positioning holes (4) and a plurality of clamping holes (5) at intervals along the length direction, a positioning column (6) is arranged on the bus fixing block (22) corresponding to the positioning hole (4), the bus fixing block (22) is provided with an elastic buckle (7) corresponding to the clamping hole (5), the positioning columns (6) are correspondingly inserted into the positioning holes (4), and the elastic buckles (7) are clamped in the clamping holes (5) and then tightly abutted to the supporting frames (21).

2. The combined bus bar clamp for the low-voltage switch cabinet as claimed in claim 1, wherein the elastic buckle (7) comprises a deformation section (71) and a pressing section (72) which are integrally connected, a deformation groove (222) is formed in the bus bar fixing block (22), the deformation section (71) is located in the deformation groove (222), and one end of the deformation section (71) is fixedly connected with the bus bar fixing block (22).

3. The combined bus bar clamp for the low-voltage switch cabinet as claimed in claim 2, wherein the elastic buckles (7) are respectively arranged at two ends of the bus bar fixing block (22) along the length direction, and the support frame (21) is provided with two clamping holes (5) corresponding to each bus bar fixing block (22).

4. The combined bus bar clamp for the low-voltage switch cabinet as claimed in claim 1, wherein the bus bar fixing block (22) is fixedly connected with a limiting skirt (8) on the side where the positioning column (6) is located, the limiting skirt (8) is arranged along the length direction of the bus bar fixing block (22), and two sliding grooves (9) which are slidably connected with the supporting frame (21) are formed between the two limiting skirts (8) on the limiting skirt (8).

5. The combined bus-bar clamp for the low-voltage switch cabinet according to claim 4, wherein the cross-section of the support frame (21) perpendicular to the length direction thereof is "U" -shaped, the side of the support frame (21) away from the opening is provided with a closed section (211), and the positioning hole (4) and the locking hole (5) are provided on the closed section (211).

6. The combined bus bar clamp for the low-voltage switch cabinet as claimed in claim 5, wherein the closed section (211) is provided with a plurality of threaded holes (10) at regular intervals, and both ends of the connecting screw rod (3) in the length direction are provided with threaded sections (31) adapted to the threaded holes (10).

7. The combined bus bar clamp for the low-voltage switch cabinet as claimed in claim 2, wherein the abutting section (72) is provided with a guiding inclined surface (721) corresponding to the clamping hole (5).

8. The combined bus bar clamp for low-voltage switch cabinets of claim 1, wherein the clamping groove (221) is "U" shaped.