CN103078190B - Puller type quick connector for emergency power van - Google Patents

Abstract

The utility model relates to a puller type emergency power supply vehicle quick access joint, which belongs to the field of emergency power supply devices. It is composed of a base, four puller hooks and a tightening screw assembly; a first screw through hole is arranged in the center of the base, and four slideways are arranged radially along the first screw through hole around the base. Through holes; the puller hooks are composed of the hook body, the positioning guide screw at the end of the hook body and the second fastening nut on the screw; the four puller hooks are movably arranged on four slideway-type In the through hole; the jacking screw assembly is composed of the jacking screw and the first fastening nut arranged on the jacking screw; the jacking screw assembly is set through the first screw through hole to form the connection end of the outgoing cable of the emergency power supply vehicle . It securely connects the outgoing cable of the emergency power supply vehicle with the low-voltage busbar of the user as a whole, and realizes the fast and reliable connection between the outgoing cable of the emergency power supply vehicle and the low-voltage busbar of the user. It can be widely used in the fields of emergency power supply and power supply management.

Description

A puller type emergency power supply vehicle quick access connector

technical field

The invention belongs to the field of circuit devices for emergency power supplies, in particular to a quick power connector for emergency power supply vehicles.

Background technique

With the further acceleration of urbanization and rural urbanization in my country, the scale of cities is constantly expanding, the demand for urban power supply is constantly increasing, and the requirements for the reliability of power supply are also constantly increasing. In order to ensure the normal electricity consumption of residents, enterprises and other users, the power supply department has extensively researched and introduced advanced electrical equipment and technologies. One of the important measures is to configure emergency power supply vehicles for special users (such as hospitals, banks, securities, confidential departments, firefighting, emergency rescue and other first-level electricity customers), and to supply power when the power distribution line needs to be shut down for maintenance. The department can immediately activate the emergency power supply vehicle to ensure that users can continue to use electricity.

The authorized announcement date is December 19, 2007, and the Chinese utility model patent with the authorized announcement number CN200992166Y discloses a "mobile emergency power supply vehicle". There is a compartment on the chassis of the car, in which there are control room, generator set, AC and DC lighting device, power distribution control device and cable tray control room; hydraulic outrigger lifting device is installed under the compartment, and cable retractable in the cable tray control room device. This kind of mobile emergency power supply vehicle that can provide different specifications can not only provide a good temporary power supply guarantee for sudden power outages of relevant departments, but also meet the needs of electric power, telecommunications, municipal administration, road construction, water supply, drainage, gas supply, flood control, emergency rescue and army , Firefighting and other related departments are used for field rescue and night construction power supply needs.

However, the application experience in recent years shows that there are some obvious problems when using the emergency power supply vehicle to generate/power the user. The main points are summarized as follows:

(1) It takes a long time to remove the fixing screws of the low-voltage busbar, resulting in a long power interruption time:

After the emergency power supply vehicle arrives at the scene, wait for the specialized personnel of the power supply department (equipment under the jurisdiction of the power supply department) or the user electrician (user equipment) to open the high and low voltage incoming line switches of the user substation, hang up the grounding wire, and then disassemble the low voltage busbar. Tighten the bolts and nuts of the busbar copper bar to connect the outgoing cable of the emergency power supply vehicle to the low-voltage busbar of the user, and then the power generation and power supply can be performed.

If the fastening bolts and nuts on the low-voltage busbars are corroded, or the electrician of the user does not bring special disassembly tools (the low-voltage busbars usually use M10 or larger installation and fixing screws, and sleeves or studs matching the specifications are required wrench, and electricians usually only carry tools such as screwdrivers that can only remove small-sized screws such as M3 and M5), it takes a long time to remove the fixing screws of the low-voltage busbar, which will greatly delay the time to restore power supply.

(2) The outlet cable connector of the emergency power supply vehicle does not match the user's low-voltage busbar connector, which affects the connection speed between the two:

If the user's low-voltage busbar connector uses small-diameter bolts and the connector of the emergency power supply vehicle's outlet cable has a larger diameter, the contact resistance will be larger when the two are connected. This is the weak point of the power supply line, and the heat will be serious; if the user The low-voltage busbar connector uses large-diameter bolts, while the connector diameter of the emergency power supply vehicle outlet cable is relatively small, so the two will not be connected, resulting in the failure of emergency power supply.

(3) The outgoing cable of the emergency power supply vehicle does not match the low-voltage outgoing wire of the user, which affects the connection speed between the two:

When the user's substation is a pole-mounted transformer, its low-voltage output wire is usually in the form of an overhead wire, because the overhead wire is usually an aluminum core wire, and the output cable of an emergency power supply vehicle is usually a copper core wire, and the copper cable is directly wound on the overhead wire It cannot be guaranteed that the connection resistance between the two is within the specified range, and the materials between the two are different. The direct hinged connection is not allowed by the safety regulations. Therefore, for such users, the incoming line switch can only be found along the overhead line. (Sometimes it is necessary to search for a distance of several kilometers or more along its overhead line in the field), remove the wire of the original overhead line at the incoming line end, and drive the emergency power supply vehicle to the position where the incoming line switch is located (sometimes where the incoming line switch is located) The location of the emergency power supply vehicle is not suitable for driving in), and then the outgoing cable of the emergency power supply vehicle is connected, which brings difficulties to the emergency power supply of such users, and sometimes loses the timing of emergency power supply and the meaning of using the emergency power supply vehicle.

Therefore, in the actual on-site emergency power supply work, it is urgent to solve the problems of fast connection and connection quality between the outgoing cable of the emergency power supply vehicle and the low-voltage busbar or low-voltage outgoing line of the user substation.

Contents of the invention

The technical problem to be solved by the present invention is to provide a puller-type emergency power supply car quick access connector, which uses the working principle of the puller-type dismounting device for motor bearing disassembly, and uses the puller hook structure to connect the emergency power supply car's outgoing line The cable and the user's low-voltage busbar are reliably fixed as one, the connection process is convenient and fast, and the quick connection between the cable of the emergency power supply vehicle and the user's low-voltage busbar is realized to ensure the quality of the connection.

The technical solution of the present invention is to provide a quick access joint for a puller type emergency power supply vehicle, which is characterized in that: the quick access joint for a puller type emergency power supply vehicle consists of a base, four puller hooks and a The tightening screw assembly is composed of; in the center of the base, a first screw through hole is provided, and around the base, four slideway-type through holes are radially provided along the first screw through hole; the puller The hook is composed of a hook body, a positioning guide screw at the end of the hook and a second fastening nut on the screw; the four puller hooks are movably arranged in four slideway-type through holes; The jacking screw assembly is composed of a jacking screw and a first fastening nut arranged on the jacking screw; the jacking screw assembly is arranged in the first screw through hole to form an emergency power supply vehicle outlet Cable connection end.

Specifically, the front end of the puller is provided with a low-voltage busbar receiving groove.

The openings of the low-voltage busbar accommodating grooves at the front ends of the four puller hooks are set correspondingly.

Each of the puller hooks is slidably arranged in the slideway-type through hole through the rear end of the hook body and the second fastening nut on the screw rod at the end of the hook body.

Said tightening screw assembly tightens the low-voltage busbar in the receiving groove of the low-voltage busbar at the front end of the puller through the tightening screw.

In the tightening screw assembly described above, the nut at the end of the tightening screw cooperates with the first fastening nut to securely connect the outlet cable head of the emergency power supply to the tightening screw assembly.

Further, the opening size of the receiving groove of the low-voltage busbar at the front end of the puller hook is larger than the thickness of the low-voltage busbar to be connected.

The linear distance between the pullers is greater than the width of the low-voltage busbar to be connected.

The quick access connector is suitable for quick connection to the user's box-type transformer, cable branch box or low-voltage busbar of the user's power distribution cabinet. Connected to the low-voltage busbar, the outgoing cable of the emergency power supply vehicle and the low-voltage busbar of the user are reliably fixed as a whole through the puller structure, so as to realize the fast and reliable connection between the outgoing cable of the emergency power supply vehicle and the low-voltage busbar of the user.

Compared with prior art, the advantages of the present invention are:

1. The quick joint structure of the puller structure is adopted, and it is directly clamped on the low-voltage busbar of the power distribution device such as the box-type transformer, the cable branch box or the user's power distribution cabinet, so as to realize the connection between the outgoing cable of the emergency power supply vehicle and the low-voltage busbar of the user fast and reliable connection;

2. There is no need to untie the pile head connection/fixing screw of the low-voltage busbar, and the whole connection process is convenient and fast;

3. It is suitable for the occasions where the low-voltage busbar arrangement structure is compact and the row spacing is small, such as box transformers, cable branch boxes, and user power distribution cabinets; the distance between each puller hook is adjustable, and it can be applied to busbars of different widths .

Description of drawings

Fig. 1 is the structural representation of quick access connector of puller type emergency power supply vehicle of the present invention;

Fig. 2 is a view along the direction A of Fig. 1 .

In the figure, 1 is the base, 2 is the main body of the puller hook, 3 is the first screw through hole, 4 is the slideway type through hole, 5 is the positioning guide screw, 6 is the second fastening nut, and 7 is the top tightening nut. Screw rod, 8 is the first tightening nut, 8-1 is the nut at the end of the screw rod, 9 is the low-voltage busbar receiving groove, and 10 is the low-voltage busbar.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

In FIG. 1 , the present invention provides a quick access connector for a puller type emergency power supply vehicle, which is composed of a base, four puller hooks and a tightening screw assembly.

In the center of the base 1, a first screw through hole 3 is provided.

The puller hook is composed of a hook body body 2, a positioning guide screw rod 5 positioned at the end of the hook body and a second fastening nut 6 positioned on the screw rod.

The jacking screw assembly is composed of a jacking screw 7 and a first fastening nut 8 arranged on the jacking screw; the jacking screw assembly is arranged in the first screw through hole to form an emergency power supply Car outgoing cable connection end.

At the front end of the body of the puller hook body, a low-voltage busbar receiving groove 9 is arranged.

It can be seen from the figure that the openings of the low-voltage busbar accommodating grooves at the front ends of the four puller hooks are set correspondingly.

Each puller hook, through the rear end of its hook body 2 and the second fastening nut 6 positioned on the positioning lead screw rod 5, is slidably moved and arranged in the slideway type through hole.

The said tightening screw assembly tightens the low-voltage busbar 10 in the low-voltage busbar receiving groove at the front end of the puller through the tightening screw.

As for the tightening screw assembly, the nut 8-1 at the end of the tightening screw cooperates with the first fastening nut to securely connect the cable head of the emergency power outlet to the tightening screw assembly.

Further, the opening size of the receiving groove of the low-voltage busbar at the front end of the puller hook is larger than the thickness of the low-voltage busbar to be connected.

The linear distance between the pullers is greater than the width of the low-voltage busbar to be connected.

It can be seen from the figure that the connection terminal of the output cable of the emergency power supply vehicle is connected between the nut 8-1 at the end of the top tightening screw and the first fastening nut 8, and the emergency power supply can be connected through mutual locking of the two nuts. The cable head is fixedly connected to the jacking screw assembly.

In FIG. 2 , around the base 1 , along the first screw through hole 3 (represented by a nut 8 - 1 tightening the end of the screw rod in the figure), four slideway-type through holes 4 are arranged radially.

The four puller hooks (represented by the positioning guide screw 5 at the end of the hook body and the second fastening nut 6 on the screw in this viewing direction) are movably arranged in four slideway-type through holes respectively. middle.

The puller-type emergency power supply vehicle quick access joint in this technical solution is suitable for quick connection to the user's box-type transformer, cable branch box or low-voltage busbar of the user's power distribution cabinet. The access connector is clamped and fixed on the low-voltage busbar to be connected, and the outgoing cable of the emergency power supply vehicle and the low-voltage busbar of the user are reliably fixed as a whole through the puller hook structure, so as to realize the connection between the outgoing cable of the emergency power supply vehicle and the low-voltage busbar of the user. Fast, reliable connections between devices.

The invention can be widely used in the fields of emergency power supply and power supply management.

Claims (8)

1. A puller-type emergency power supply vehicle quick access joint, comprising a base, four puller hooks and a tightening screw assembly, in the center of the base, a first screw through hole is provided; its features yes: Around the base, four slideway-type through holes are arranged radially along the first screw through hole; The puller hook is composed of a hook body, a positioning guide screw located at the end of the hook body, and a second fastening nut located on the positioning guide screw; The four puller hooks are respectively movably arranged in four slideway-type through holes; The jacking screw assembly is composed of a jacking screw and a first fastening nut arranged on the jacking screw; In the jacking screw assembly, the nut at the end of the jacking screw cooperates with the first fastening nut, and the cable head of the emergency power outlet is fixed on the jacking screw assembly; The jacking screw assembly is arranged through the first screw through hole to form the connection end of the outgoing cable of the emergency power supply vehicle; The puller-type emergency power supply vehicle quick access connector adopts a puller-type quick connector structure, and is directly clamped on the low-voltage busbar of the box-type transformer, cable branch box or user power distribution cabinet power distribution device to realize emergency response. Fast and reliable connection between the outgoing cable of the power supply vehicle and the low-voltage busbar of the user; It does not need to untie the pile head connection/fixing screw of the low-voltage busbar, and the whole connection process is convenient and fast; it is suitable for the occasions where the low-voltage busbars of the box transformer, cable branch box, and user power distribution cabinet are arranged in a compact structure and the row spacing is small; The distance between each puller hook is adjustable, which can be applied to busbars of different widths. 2. According to claim 1, the quick access joint of the puller type emergency power supply vehicle is characterized in that the front end of the puller hook is provided with a low-voltage busbar accommodation groove. 3. According to claim 1, the quick access joint of the puller-type emergency power supply vehicle is characterized in that the openings of the low-voltage busbar accommodating grooves at the front ends of the four puller hooks are arranged in corresponding positions. 4. According to the quick access joint of the puller type emergency power supply vehicle according to claim 1, it is characterized in that each of the puller hooks is fastened through the rear end of the hook body and the second fastening position on the positioning guide screw. The nut is slidably moved and arranged in the slideway type through hole. 5. According to claim 1, the quick access joint of the puller-type emergency power supply vehicle is characterized in that the tightening screw assembly is used to tighten the low-voltage busbar to the low-voltage busbar at the front end of the puller hook through the tightening screw. in the holding tank. 6. The puller-type emergency power supply vehicle quick access joint according to claim 1, characterized in that the opening size of the low-voltage busbar receiving groove at the front end of the puller hook is greater than the thickness of the low-voltage busbar to be connected. 7. According to claim 1, the quick access joint of the puller-type emergency power supply vehicle is characterized in that the straight-line distance between the puller hooks is greater than the width of the low-voltage busbar to be connected. 8. According to the quick access joint of the puller type emergency power supply vehicle according to claim 1, it is characterized in that the quick access joint is suitable for the low-voltage bus of the user's box-type transformer, cable branch box or user power distribution cabinet. When using it, you only need to clamp and fix the quick access connector on the low-voltage busbar to be connected, and reliably connect the outgoing cable of the emergency power supply vehicle to the low-voltage busbar of the user through the puller hook structure. Integrate to realize the fast and reliable connection between the outgoing cable of the emergency power supply vehicle and the user's low-voltage busbar.