阅读说明：本技术 开关柜回路电阻试验用梅花触头夹紧装置 (Plum blossom contact clamping device for switch cabinet loop resistance test ) 是由 孟书海 郑城市 韩光 贾鹏举 张楠 赵双兵 李�杰 刘佳 李文科 王秀娟 于 2019-10-16 设计创作，主要内容包括：本发明属于梅花触头夹紧装置技术领域,具体涉及开关柜回路电阻试验用梅花触头夹紧装置；它包括第一夹紧部和第二夹紧部,第一夹紧部包括半环组合件,半环组合件包括连接半环,连接半环的内凹面上设置有夹紧半环,外凸面上设置有拉杆,拉杆连接有拉柄；第一夹紧部包括弹性连接件,第一夹紧部由两个半环组合件通过弹性连接件连接而成；左边的半环组合件的夹紧半环位于连接半环内凹面的上部,右边的半环组合件的夹紧半环位于连接半环内凹面的下部；第二夹紧部与第一夹紧部结构相同；本发明结构合理、操作使用方便,能够承受开关柜回路电阻试验时产生的高温,保证试验安全有效进行。(The invention belongs to the technical field of plum blossom contact clamping devices, and particularly relates to a plum blossom contact clamping device for a switch cabinet loop resistance test; the clamping mechanism comprises a first clamping part and a second clamping part, wherein the first clamping part comprises a semi-ring assembly, the semi-ring assembly comprises a connecting semi-ring, a clamping semi-ring is arranged on the inner concave surface of the connecting semi-ring, a pull rod is arranged on the outer convex surface, and the pull rod is connected with a pull handle; the first clamping part comprises an elastic connecting piece, and the first clamping part is formed by connecting two semi-ring assemblies through the elastic connecting piece; the clamping semi-ring of the left semi-ring assembly is positioned at the upper part of the concave surface of the connecting semi-ring, and the clamping semi-ring of the right semi-ring assembly is positioned at the lower part of the concave surface of the connecting semi-ring; the second clamping part has the same structure as the first clamping part; the high-temperature resistance test device is reasonable in structure and convenient to operate and use, can bear high temperature generated in a switch cabinet loop resistance test, and ensures that the test is safely and effectively carried out.)

1. Cubical switchboard return circuit resistance is experimental with plum blossom contact clamping device, it is including first clamping part (9) and second clamping part (10), its characterized in that: the first clamping part (9) comprises a half ring assembly (17), the half ring assembly (17) comprises a connecting half ring (7), the inner side concave surface of the connecting half ring (7) is provided with a clamping half ring (8), the middle part of the outer side convex surface of the connecting half ring (7) is fixedly connected with a pull rod (6), and the top end of the pull rod (6) is fixedly connected with a pull handle (5); the first clamping part (9) comprises an elastic connecting piece (14), the elastic part of the elastic connecting piece (14) can be a circular arc-shaped plate or a bent plate with two acute angles formed on two sides, and the first clamping part (9) is formed by connecting two half ring assemblies (17) through the elastic connecting piece (14); the clamping half ring (8) of the left half ring assembly (17) is positioned at the upper part of the concave surface at the inner side of the connecting half ring (7), and the clamping half ring (8) of the right half ring assembly (17) is positioned at the lower part of the concave surface at the inner side of the connecting half ring (7); the first clamping part (9) is located at the upper part of the contact piece (1), the second clamping part (10) is located at the lower part of the contact piece (1), and the second clamping part (10) is identical to the first clamping part (9) in structure.

2. The plum blossom contact clamping device for the switch cabinet loop resistance test, as claimed in claim 1, wherein: the connecting semi-ring (7) comprises a circular arc-shaped web plate and connecting end plates arranged at two ends of the web plate, and connecting holes (16) are formed in the connecting end plates.

3. The plum blossom contact clamping device for the switch cabinet loop resistance test, as claimed in claim 1, wherein: the end face of the clamping semi-ring (8) contacting with the clamping groove (4) on the contact sheet (1) is an arc end face, the clamping semi-ring (8) is a part of a circular ring with the same outer diameter and ring width, and the clamping semi-ring (8) is a semi-circular semi-ring larger than the semi-circular semi-ring.

4. The plum blossom contact clamping device for the switch cabinet loop resistance test, as claimed in claim 1, wherein: the pull rod (6) is vertically arranged at the center of the outer convex surface of the connecting half ring (7), and the length direction of the pull handle (5) is parallel to the width direction of the connecting half ring (7).

5. The plum blossom contact clamping device for the switch cabinet loop resistance test, as claimed in claim 1, wherein: the two ends of the elastic connecting piece (14) with the elastic part being a circular arc-shaped plate are provided with connecting plates, the two connecting plates of the elastic connecting piece (14) are positioned on the outer side of the end part of the semi-ring assembly (17), the elastic connecting piece (14) and the semi-ring assembly (17) are connected through a connecting bolt (13), a first adjusting nut (11) and a second adjusting nut (12), and the second adjusting nut (12) is positioned on the inner side of the connecting end of the two semi-ring assemblies (17).

6. The plum blossom contact clamping device for the switch cabinet loop resistance test, as claimed in claim 1, wherein: the two ends of the elastic connecting piece (14) of the bending plate with acute angles formed on two sides of the elastic part are provided with connecting plates, the two connecting plates of the elastic connecting piece (14) are positioned on the outer side of the end part of the semi-ring assembly (17), the elastic connecting piece (14) is connected with the semi-ring assembly (17) through a connecting bolt (13), a first adjusting nut (11) and a second adjusting nut (12), and the second adjusting nut (12) is positioned on the inner side of the connecting end of the two semi-ring assemblies (17).

7. The plum blossom contact clamping device for the switch cabinet loop resistance test, as claimed in claim 1, wherein: the two ends of the elastic connecting piece (14) of the bending plate with acute angles formed on two sides of the elastic part are provided with connecting plates, the two connecting plates of the elastic connecting piece (14) are positioned on the inner side of the end part of the semi-ring assembly (17), and the elastic connecting piece (14) is connected with the semi-ring assembly (17) through a connecting piece (15).

8. The plum blossom contact clamping device for the switch cabinet loop resistance test, as claimed in claim 1, wherein: the connecting piece (15) is a bolt pair or a pin shaft assembly.

Technical Field

The invention belongs to the technical field of plum blossom contact clamping devices, and particularly relates to a plum blossom contact clamping device for a switch cabinet loop resistance test.

Background

The switch cabinet is important electrical equipment for power control and distribution regulation in a power distribution system, and the overall safe operation of the switch cabinet in the operation process can greatly influence the power supply quality of a power supply network; when relevant workers design and select types for the switch cabinet, although dynamic stability calculation and thermal stability inspection are performed according to relevant standards, due to various reasons, a plurality of conditions still occur in the operation process of a power grid system, so that the temperature of the switch cabinet rises too fast and too high in the use process; in order to judge the contact condition of primary equipment in a full loop and search for possible overheating defects, the loop resistance of the switch cabinet needs to be tested before the switch cabinet is put into use; in the detection process, in order to ensure the effective connection of the tulip contact with the movable contact arm and the fixed contact, the plum blossom contact is required to be clamped by using a clamping device, the spring is used as the clamping device of the plum blossom contact when the switch cabinet is normally put into use at present, but in the process of detecting the loop resistance, the situation of overhigh temperature is met with higher probability, the spring is easy to burn off when being used as the clamping device, so that safety accidents are caused, and the special plum blossom contact clamping device is necessary to ensure the safe and effective detection when the loop resistance is designed for detection.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides the plum blossom-shaped contact clamping device for the resistance test of the switch cabinet loop, which has a simple structure and is convenient to use, can bear high temperature generated in the resistance test of the switch cabinet loop and ensure safe and effective test.

The purpose of the invention is realized as follows: the plum blossom contact clamping device for the switch cabinet loop resistance test comprises a first clamping part and a second clamping part, wherein the first clamping part comprises a semi-ring assembly, the semi-ring assembly comprises a connecting semi-ring, a clamping semi-ring is arranged on the concave surface of the inner side of the connecting semi-ring, the middle part of the convex surface of the outer side of the connecting semi-ring is fixedly connected with a pull rod, and the top end of the pull rod is fixedly connected with a pull handle; the first clamping part comprises an elastic connecting piece, the elastic part of the elastic connecting piece can be an arc-shaped plate or a bent plate with two acute angles formed on two sides, and the first clamping part is formed by connecting two semi-ring assemblies through the elastic connecting piece; the clamping half ring of the left half ring assembly is positioned at the upper part of the inner side concave surface of the connecting half ring, and the clamping half ring of the right half ring assembly is positioned at the lower part of the inner side concave surface of the connecting half ring; the first clamping part is located on the upper portion of the contact piece, the second clamping part is located on the lower portion of the contact piece, and the second clamping part is identical to the first clamping part in structure.

The connecting semi-ring comprises a circular arc-shaped web plate and connecting end plates arranged at two ends of the web plate, and connecting holes are formed in the connecting end plates.

The end face of the clamping semi-ring, which is contacted with the clamping groove on the contact plate, is an arc-shaped end face, the clamping semi-ring is a part of a circular ring with the same outer diameter and ring width, and the clamping semi-ring is a semi-ring larger than a semicircle.

The pull rod is vertically arranged at the center of the outer convex surface of the connecting semi-ring, and the length direction of the pull rod is parallel to the width direction of the connecting semi-ring.

The elastic connecting piece is characterized in that two ends of the elastic connecting piece of which the elastic part is a circular arc-shaped plate are provided with connecting plates, two connecting plates of the elastic connecting piece are positioned on the outer side of the end part of the semi-ring assembly, the elastic connecting piece is connected with the semi-ring assembly through a connecting bolt, a first adjusting nut and a second adjusting nut, and the second adjusting nut is positioned on the inner side of the connecting end of the two semi-ring assemblies.

The elastic part is a bending plate with acute angles formed on two sides, connecting plates are arranged at two ends of the elastic connecting piece, the two connecting plates of the elastic connecting piece are positioned on the outer side of the end part of the semi-ring assembly, the elastic connecting piece is connected with the semi-ring assembly through a connecting bolt, a first adjusting nut and a second adjusting nut, and the second adjusting nut is positioned on the inner side of the connecting end of the two semi-ring assemblies.

The elastic part is a bending plate with acute angles on two sides, connecting plates are arranged at two ends of the elastic connecting piece, the two connecting plates of the elastic connecting piece are positioned on the inner side of the end part of the semi-ring assembly, and the elastic connecting piece is connected with the semi-ring assembly through a connecting piece.

The connecting piece is a bolt pair or a pin shaft assembly.

The invention has the beneficial effects that: the plum blossom contact comprises a first clamping part and a second clamping part, wherein the plum blossom contact comprises a support sheet and contact sheets distributed along the circumference of the support sheet, and the existing plum blossom contact clamps the plum blossom contact by embedding a clamping spring into a clamping groove of the contact sheet; the first clamping part is formed by connecting two semi-ring assemblies through an elastic connecting piece, the clamping semi-rings of the two semi-ring assemblies are arranged in a staggered mode during combination, and after combination is completed, the left semi-ring assembly and the right semi-ring assembly can be expanded towards two sides by pulling the pull handle, so that the first clamping part is sleeved on the upper portion of the plum blossom contact, and the plum blossom contact is clamped; the first clamping part and the second clamping part are identical in overall structure, the clamping semi-rings are used for replacing a clamping spring of an original plum blossom contact to clamp the contact piece, the defect that the clamping spring is burnt off when the temperature is too high is avoided, and when the plum blossom contact is clamped or disassembled, the clamping or the disassembly can be realized only by pulling the pull handle, so that the operation is convenient and efficient; the high-temperature resistance test device is reasonable in structure and convenient to operate and use, can bear high temperature generated in a switch cabinet loop resistance test, and ensures that the test is safely and effectively carried out.

Drawings

Fig. 1 is a schematic cross-sectional view of a conventional tulip contact.

Fig. 2 is a schematic top view of a conventional tulip contact.

Fig. 3 is a schematic sectional structural view of the tulip contact clamping device for the switch cabinet loop resistance test.

Fig. 4 is a schematic top view of the elastic connecting member of the present invention.

Fig. 5 is a schematic top view of the flexible connector of the present invention.

Fig. 6 is a schematic top view of the elastic connecting member being a bent plate and the connecting plate thereof being located inside the joint.

FIG. 7 is a schematic view of the connection of the coupling half rings and the clamping half rings.

Fig. 8 is a left side view of the structure of fig. 7.

Fig. 9 is a right-view structural diagram of fig. 7.

In the figure: 1. the semi-ring assembling device comprises a contact plate 2, a support plate 3, a clamping spring 4, a clamping groove 5, a pull handle 6, a pull rod 7, a connecting semi-ring 8, a clamping semi-ring 9, a first clamping part 10, a second clamping part 11, a first adjusting nut 12, a second adjusting nut 13, a connecting bolt 14, an elastic connecting piece 15, a connecting piece 16, a connecting hole 17 and a semi-ring assembly.

Detailed Description

The invention is further described below with reference to the accompanying drawings.