CN108918919B

CN108918919B - A quick plug spare for C type terminal short circuit test

Info

Publication number: CN108918919B
Application number: CN201810758837.0A
Authority: CN
Inventors: 孙雨彤; 印玺; 曹璐璐; 曹建彩; 白璐; 吴青海; 包捷; 縢衍靓
Original assignee: CRRC Nanjing Puzhen Rail Transport Co Ltd
Current assignee: CRRC Nanjing Puzhen Rail Transport Co Ltd
Priority date: 2018-07-11
Filing date: 2018-07-11
Publication date: 2020-11-24
Anticipated expiration: 2038-07-11
Also published as: CN108918919A

Abstract

The invention discloses a quick plug-pull piece for a C-type terminal short circuit test, which comprises an outer shell, wherein a bullet guide head, a spring and a linkage operating rod are arranged in an inner cavity of the outer shell, the fixed end of the spring is connected with a fixed outer shell, the movable end of the spring is connected with the bullet guide head, and the linkage operating rod penetrates through the spring and is connected with the bullet guide head. The quick plugging piece for the short circuit test of the C-shaped terminal has the characteristics of small volume, modularization and quick plugging, and effectively avoids the situation that the short circuit of the cable is caused because the cable of the tooling is not cleaned completely after the short circuit. And this plug spare can be used as required individuality, also can the associativity use, and is easy and simple to handle, can greatly promote work efficiency.

Description

A quick plug spare for C type terminal short circuit test

Technical Field

The invention belongs to the technical field of rail transit, and particularly relates to a quick plugging piece for a C-shaped terminal short circuit test.

Background

In the production process of subway and motor car vehicles, voltage-resistant and electric insulation tests need to be carried out on cables of different grades of vehicles so as to ensure that wire harnesses are free of hidden damage. Because about 4000-10000 pencil among subway and motor car vehicle, in the field operation, staff according to pencil short circuit scheme with the pencil according to the grade grouping and short circuit, consequently need a lot of short circuit pencil devices in the experimentation, and need demolish short circuit pencil device after withstand voltage test finishes, work load is great.

The existing vehicle voltage-withstand and electric insulation test device mostly adopts a device with a C-shaped terminal at one end and a plug-in module or an alligator clip at one end to connect cables of different grades in groups. To the cable that is the C type terminal at the cable end under test, the short circuit scheme generally adopts and uses alligator clip or iron wire winding. Due to the fact that the total amount of the wire harnesses is large, the risk that the iron wires or the crocodiles are missed to be detached after the test is finished is easily caused by the short-circuit mode, the cables are short-circuited after the vehicle is electrified, irreversible damage is caused to the vehicle, and the operation risk is increased; and the cable quantity is great, and staff's operation is inconvenient, wastes time and energy. Therefore, the invention designs the quick plugging piece for the short-circuit test of the C-shaped terminal.

Disclosure of Invention

In order to solve the problems, the invention provides a quick plugging piece for a short circuit test of a C-shaped terminal.

The technical purpose is achieved, the technical effect is achieved, and the invention is realized through the following technical scheme:

the utility model provides a quick plug spare for C type terminal short circuit test, includes the shell body bullet head, spring and linkage action bars have been set up in the inner chamber of shell body, the stiff end of spring link to each other with fixed shell body, the expansion end links to each other with bullet head, linkage action bars run through the spring with bullet head link to each other.

As a further improvement of the invention, the inner cavity comprises a spring accommodating cavity and a terminal accommodating cavity which are communicated with each other, the spring accommodating cavity and the terminal accommodating cavity are communicated to form a T-shaped structure cavity, and the linkage operating rod drives the bullet guide head to move along the extension direction of the spring accommodating cavity.

As a further improvement of the invention, the width of the spring accommodating cavity is equal to the diameter of the spring.

As a further improvement of the invention, the linkage operating rod further comprises a first through hole and a second through hole which are arranged on the outer shell, the linkage operating rod penetrates through the first through hole, the second through hole corresponds to the position corresponding to the tip of the cone, and a connecting line of the circle centers of the first through hole and the second through hole is parallel to and collinear with the linkage operating rod.

As a further improvement of the present invention, the bullet-guiding head includes a cylindrical body at an upper end and a conical body at a lower end, and the conical body at the lower end of the bullet-guiding head is located in the second through hole in a state that the spring is in an original length.

As a further improvement of the present invention, the diameter of the second through hole is smaller than the diameter of the C-type terminal to be tested.

As a further improvement of the invention, at least two plug pieces are connected in parallel to form a combined plug piece, and the single plug pieces are connected together through a linkage plate connected with the linkage operating rod.

As a further improvement of the invention, the linkage plate further comprises an insulating handle, and the insulating handle is vertically connected with the linkage plate.

The invention has the beneficial effects that: the quick plugging piece for the short circuit test of the C-shaped terminal has the characteristics of small volume, modularization and quick plugging, and effectively avoids the situation that the short circuit of a cable is caused because a tooling cable is not cleaned completely after the short circuit. And this plug spare can be used as required individuality, also can the associativity use, and is easy and simple to handle, can greatly promote work efficiency.

Drawings

FIG. 1 is a schematic structural view of a single plug;

FIG. 2 is a schematic structural view of a combination plug;

wherein: the device comprises a shell 1, a spring accommodating cavity 2, a terminal accommodating cavity 3, a linkage operating rod 4, a spring 5, a bullet guide head 6, a first through hole 7, a second through hole 8, a linkage plate 9 and an insulating handle 10.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following detailed description of the principles of the invention is provided in connection with the accompanying drawings.

The quick plug-pull piece for the C-type terminal short circuit test comprises an outer shell 1, wherein a bullet-guiding head 6, a spring 5 and a linkage operating rod 4 are arranged in an inner cavity of the outer shell 1, a fixed end of the spring 5 is connected with the fixed outer shell 1, a movable end of the spring 5 is connected with the bullet-guiding head 6, and the linkage operating rod 4 penetrates through the spring 5 and is connected with the bullet-guiding head 6.

The inner chamber hold chamber 2 and terminal including communicating spring and hold chamber 3, the spring hold chamber 2 and terminal hold chamber 3 and communicate into T type structure chamber, linkage action bars 4 drive bullet-guiding head 6 and hold the extending direction removal in chamber 2 along the spring. In order to ensure that the linear motion can be kept in the process of motion, the width of the spring accommodating cavity 2 is equal to the diameter of the spring 5 for limiting.

Still including setting up first through-hole 7 and the second through-hole 8 on shells 1, linkage action bars 4 run through first through-hole 7, second through-hole 8 correspond to the position that the pointed end of cone corresponds, the line in the centre of a circle of first through-hole 7 and second through-hole 8 with linkage action bars 4 parallel and collineation.

The bullet guide head 6 comprises a cylinder at the upper end and a cone at the lower end, and the spring 5 or the linkage operating rod 4 is connected with the cylinder. When the spring 5 is in the original length state, the cone at the lower end of the bullet-guiding head 6 is positioned in the second through hole 8 and is communicated with the C-shaped terminal to form a short circuit. Meanwhile, the diameter of the cylinder is larger than that of the tested C-shaped terminal, and the diameter of the second through hole 8 is smaller than that of the tested C-shaped terminal.

In the process of carrying out short circuit test on the C-shaped terminal by adopting the plug-pull piece designed by the invention, the C-shaped terminal to be tested is firstly arranged at the bottom end of the terminal accommodating cavity 3, and when the spring 5 is in a natural length state, the bullet-guiding head 5 is completely contacted with the C-shaped terminal to complete the short circuit test. After the test is finished, the linkage operating rod 4 is pulled, the bullet guide head 5 is detached from the C-shaped terminal, and the test circuit is disconnected.

In order to increase the testing efficiency, a combined plug in the second embodiment as shown in fig. 2 is also provided. The combined plug-pull piece is formed by connection. The specific connection process is that at least two plug-pull pieces are arranged in parallel on the same straight line, and then a linkage plate 9 is used for connecting all the linkage operating rods 4 together. The linkage plate 9 further comprises an insulating handle 10 vertically connected with the linkage plate, and synchronous operation of all the plugging pieces is completed at one time through the insulating handle 10.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a quick plug spare for C type terminal short circuit test, includes shell body (1), its characterized in that: a bullet guiding head (6), a spring (5) and a linkage operating rod (4) are arranged in an inner cavity of the outer shell (1), a fixed end of the spring (5) is connected with the fixed outer shell (1), a movable end of the spring is connected with the bullet guiding head (6), and the linkage operating rod (4) penetrates through the spring (5) and is connected with the bullet guiding head (6);

the inner cavity comprises a spring accommodating cavity (2) and a terminal accommodating cavity (3) which are communicated, the spring accommodating cavity (2) and the terminal accommodating cavity (3) are communicated to form a T-shaped structure cavity, and the linkage operating rod (4) drives the bullet guide head (6) to move along the extending direction of the spring accommodating cavity (2);

the linkage operating rod is characterized by further comprising a first through hole (7) and a second through hole (8) which are arranged on the outer shell (1), the linkage operating rod (4) penetrates through the first through hole (7), the second through hole (8) corresponds to the position corresponding to the tip of the cone, and a connecting line of the circle centers of the first through hole (7) and the second through hole (8) is parallel to and collinear with the linkage operating rod (4); the bullet guide head (6) comprises a cylinder at the upper end and a cone at the lower end, the cone at the lower end of the bullet guide head (6) is located in the second through hole (8) when the spring (5) is in the original length state, and the diameter of the second through hole (8) is smaller than that of the tested C-shaped terminal.

2. The quick-connect and disconnect piece for the short-circuit test of the C-type terminal according to claim 1, characterized in that: the width of the spring accommodating cavity (2) is equal to the diameter of the spring (5).

3. The quick-connect and disconnect member for the short-circuit test of the C-type terminal according to claim 1 or 2, characterized in that: at least two plug-pull pieces are connected in parallel to form a combined plug-pull piece, and the single plug-pull piece is connected together through a linkage plate (9) connected with the linkage operating rod (4).

4. The quick-connect and disconnect member for the C-type terminal short-circuit test according to claim 3, characterized in that: the electric bicycle is characterized by further comprising an insulating handle (10), wherein the insulating handle (10) is vertically connected with the linkage plate (9).