CN216981188U

CN216981188U - Travel switch assembly and intelligent switch cabinet

Info

Publication number: CN216981188U
Application number: CN202123381405.9U
Authority: CN
Inventors: 罗明; 赵凌鹏; 刘孝恩; 朱向阳
Original assignee: Hunan Changgao Electrical Equipment Co ltd
Current assignee: Hunan Changgao Electrical Equipment Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-07-15
Anticipated expiration: 2031-12-29

Abstract

The utility model discloses a travel switch assembly and an intelligent switch cabinet, wherein the travel switch assembly comprises a mounting plate, a U-shaped support, a guide screw, a return spring, a push rod assembly, a sliding sheet and a travel switch, the U-shaped support is mounted on the mounting plate, two ends of the guide screw are mounted on two side arms of the U-shaped support, one end of the push rod assembly penetrates through one side arm of the U-shaped support and is provided with a snap ring, the other end of the push rod assembly penetrates through the other side arm of the U-shaped support and is provided with an impact part, the travel switch is positioned on the mounting plate and close to the impact part, the return spring is sleeved on the push rod assembly positioned in a U-shaped groove of the U-shaped support, the sliding sheet is fastened on the push rod assembly positioned in the U-shaped groove of the U-shaped support, is close to one side arm of the U-shaped support and is slidably arranged on the guide screw. The utility model has the advantages of simple structure, reliable action, low cost and the like.

Description

Travel switch assembly and intelligent switch cabinet

Technical Field

The utility model mainly relates to the technical field of intelligent switch cabinets, in particular to a travel switch assembly and an intelligent switch cabinet.

Background

In recent years, national grid companies have vigorously popularized intelligent substations, and intelligent switch cabinets are required to have a one-key sequential control operation function in the intelligent substations. The intelligent switch cabinet needs to realize one-key sequential control operation, an electric chassis vehicle is needed to be adopted in the switch cabinet to drive a circuit breaker (the circuit breaker is installed on the electric chassis vehicle) to automatically move to a working position and a test position, and the working position and the test position of the electric chassis vehicle are needed to be confirmed in order to ensure that the electric chassis vehicle (the circuit breaker) runs in place. At present, a video double-confirmation scheme is adopted, but the scheme has the defects of high cost, short service life, inconvenience for large-area popularization and the like.

In view of the above disadvantages of the prior art, the applicant of the present invention has previously adopted a double-stroke switch to determine the position, in which a guide 901 is disposed on the middle partition plate 9, the bolt bearing 801 on the electric chassis 8 is embedded in the guide 901, and then a transverse pushing device 10 and an end-stroke switch 902 are used to achieve double confirmation of the position. The specific structure of the transverse pushing device 10 is shown in fig. 1-3, and comprises a mounting plate 1, a U-shaped support 2 is arranged on the mounting plate 1, wherein two side arms of the U-shaped support 2 are provided with an upper perforation and a lower perforation which are symmetrical, a guide screw 3 is arranged on the lower perforation, a sliding rod 101 is arranged on the upper perforation, one end of the sliding rod 101 extends out of the side arm and is provided with an end cover nut 11 and a locking nut 12, the other end of the sliding rod 101 extends out of the side arm and is provided with a clamping ring 4021, and one section of the sliding rod 101, which is positioned inside the U-shaped support 2, is sleeved with a reset spring 7 and a sliding sheet 5. The transverse pushing device 10 still has the following disadvantages when in use:

1. when the upper end face of the sliding piece 5 is stressed to move backwards, the sliding rod 101, the locking nut 103 and the end cover nut 102 are driven to move backwards, and finally the travel switch 7 is pushed to be closed, but because the sliding piece 5 and the sliding rod 101 are not fixed, a hole gap exists, the rotating direction of the sliding piece 5 deflects simultaneously in the backward moving process, the lower hole of the sliding piece 5 has a clamping stagnation phenomenon in the moving process of the guide screw rod 3, and the travel switch 7 cannot be pushed to move smoothly;

2. because the stroke adjustment of the stroke switch 7 is realized by adjusting the locking nut 103 and the end cover nut 102, the adjustment process is complex when the specific adjustment is carried out;

3. because the travel switch 7 installed on the installation plate 1 is often impacted, the U-shaped installation plate 1 is easily elastically deformed, and the reliability of the action of the travel switch 7 is further influenced.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: aiming at the problems in the prior art, the utility model provides a travel switch assembly and an intelligent switch cabinet, which are simple in structure and reliable in action.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

the utility model provides a travel switch subassembly, includes mounting panel, U type support, lead screw, reset spring, push rod subassembly, slide and travel switch, U type support mounting is on the mounting panel, lead screw's both ends are installed on the both sides arm of U type support, wear out push rod subassembly's one end be provided with the snap ring behind U type support one side arm, wear out push rod subassembly's the other end be provided with striking portion behind the U type support other side arm, travel switch is located the mounting panel and is close to striking portion, reset spring cover is located on the push rod subassembly that is located U type groove of U type support, the slide fastens on the push rod subassembly that is located U type groove of U type support, is close to in U type support one side arm, and smooth locating on the lead screw.

As a further improvement of the above technical solution:

the push rod assembly comprises a push rod and a sliding shaft, the clamping ring is located at one end of the sliding shaft, the other end of the sliding shaft penetrates through one side arm of the U-shaped support and then is fixedly connected with one end of the push rod, and the sliding sheet is located at the connecting position of the push rod and the sliding shaft.

The other end of the sliding shaft is provided with external threads and a limiting part, one end of the push rod is provided with an internal threaded hole, the sliding sheet is provided with a through hole, the diameter of the through hole is the same as the external diameter of the sliding shaft, the other end of the sliding shaft is in threaded connection with one end of the push rod, and the sliding sheet is fastened between the limiting part and the end part of the push rod.

The mounting plate is provided with a waist round hole, and the travel switch is fastened on the waist round hole through a fastening piece.

And the bottom of the mounting plate is provided with a reinforcing rib.

The corner of the contact part of the sliding sheet is arc-shaped.

The utility model also discloses an intelligent switch cabinet which comprises a cabinet body, a circuit breaker, an electric chassis truck and a middle partition plate, wherein the circuit breaker is positioned on the electric chassis truck, the middle partition plate is installed on the cabinet body, a guide rail is arranged on the middle partition plate, a sliding part is arranged at the bottom of the electric chassis truck, the sliding part slides in the guide rail, a position detection part is arranged at one end of the guide rail, and the travel switch assembly is arranged at one end of the guide rail.

As a further improvement of the above technical solution:

the sliding part is a bolt bearing.

The number of the bolt bearings is multiple.

The position detection piece is an end travel switch.

Compared with the prior art, the utility model has the advantages that:

according to the travel switch assembly, the sliding sheet is fastened on the push rod assembly, the upper end face of the sliding sheet cannot deflect in the rotating direction when stressed to move backwards, the lower hole of the sliding sheet cannot be clamped with the guide screw rod, and the backward movement is smooth and reliable; the whole structure is simple, the disassembly and the assembly are simple and convenient, and the action is reliable.

According to the travel switch assembly, the waist circular holes are formed in the mounting plate, the travel switch is fastened on the waist circular holes through the fastening pieces, the previous travel adjustment of the locking nut and the end cover nut is cancelled, the travel switch can be directly mounted in place, and the phenomenon that the travel switch is not debugged in place is avoided.

According to the travel switch assembly, the reinforcing ribs are arranged at the bottom of the mounting plate, so that the structure is strengthened, the travel switch assembly is prevented from being elastically deformed in operation, and the reliability of the travel switch action is guaranteed.

According to the travel switch assembly, the corners of the contact part of the sliding sheet are in the shape of the arc, the sharp corners of the friction contact surface are all rounded, and the phenomenon of overlarge resistance or clamping stagnation is reduced.

According to the intelligent switch cabinet, the rail is matched with the bolt bearing, the electric chassis vehicle can be guided to enter and exit, the plum-blossom-shaped contact fingers on the contact arms of the circuit breaker are ensured to be in coaxial contact with the contacts of the cabinet body, the circuit breaker is prevented from generating large movement during plugging and unplugging, and the running reliability and the service life of equipment are improved; meanwhile, the position of the circuit breaker required by one-key sequential control of the switch cabinet can be confirmed by the end travel switch and the travel switch assembly, and the circuit breaker is simple in structure, convenient to install and use, low in manufacturing cost, good in economy and convenient to popularize and apply; the main structure of the original equipment is not changed, so that the production of new equipment is facilitated, the method is also suitable for the transformation of the operated old equipment, and the application range is wide.

Drawings

Fig. 1 is a schematic view of an assembly structure of a transverse pushing device in the prior art.

Fig. 2 is an exploded view of a lateral pushing device according to the related art.

Fig. 3 is an exploded view of a second prior art lateral pushing device.

Fig. 4 is an assembly structure diagram of the travel switch assembly of the present invention in an embodiment.

Fig. 5 is an exploded view of one embodiment of the travel switch assembly of the present invention.

Fig. 6 is an exploded view of the second embodiment of the travel switch assembly of the present invention.

Fig. 7 is a schematic structural diagram of an intelligent switch cabinet according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of an electric chassis vehicle according to an embodiment of the present invention.

Fig. 9 is a schematic structural view of a middle partition plate according to an embodiment of the present invention.

Illustration of the drawings: 1. mounting a plate; 11. a lumbar circular hole; 12. reinforcing ribs; 2. a U-shaped bracket; 3. a lead screw; 4. a push rod assembly; 401. a push rod; 402. a sliding shaft; 4021. a snap ring; 4022. a limiting member; 5. a slide sheet; 6. a return spring; 7. a travel switch; 701. a fastener; 8. an electric chassis vehicle; 801. a bolt bearing; 9. a middle partition plate; 901. a guide rail; 902. an end travel switch; 10. a transverse pushing device; 101. a slide bar; 102. an end cap nut; 103. locking the nut; 13. a cabinet body; 14. provided is a circuit breaker.

Detailed Description

The utility model is further described below with reference to the figures and the specific embodiments of the description.

As shown in fig. 4 to 6, the travel switch assembly according to the embodiment of the present invention includes a mounting plate 1, a U-shaped bracket 2, a guide screw 3, a return spring 6, a push rod assembly 4, a sliding piece 5, and a travel switch 7, wherein the U-shaped bracket 2 is mounted on the mounting plate 1 through a fastening bolt, two ends of the guide screw 3 are mounted on two side arms of the U-shaped bracket 2, one end of the push rod assembly 4 penetrates through one side arm of the U-shaped bracket 2 and is provided with a snap ring 4021, the other end of the push rod assembly 4 penetrates through the other side arm of the U-shaped bracket 2 and is provided with a striking part, the travel switch 7 is located on the mounting plate 1 and is close to the striking part, the return spring 6 is sleeved on the push rod assembly 4 located in a U-shaped groove of the U-shaped bracket 2, and the sliding piece 5 is fastened on the push rod assembly 4 located in a U-shaped groove of the U-shaped bracket 2 and is close to one side arm of the U-shaped bracket 2 and is slidably disposed on the guide screw 3. According to the travel switch assembly, the sliding sheet 5 is fastened on the push rod assembly 4, the upper end face of the sliding sheet 5 cannot deflect in the rotating direction when stressed to move backwards, a lower hole of the sliding sheet cannot be clamped with the guide screw rod 3, and backward movement is smooth and reliable; the whole structure is simple, the assembly and disassembly are simple and convenient, and the action is reliable.

In a specific embodiment, the push rod assembly 4 comprises a push rod 401 and a sliding shaft 402, one end of the sliding shaft 402 is provided with a snap ring 4021, the other end of the sliding shaft passes through one side arm of the U-shaped bracket 2 and is fixedly connected with one end of the push rod 401, and the sliding sheet 5 is located at the connection position of the push rod 401 and the sliding shaft 402. The other end of the sliding shaft 402 is provided with an external thread and a limiting member 4022, one end of the push rod 401 is provided with an internal thread hole, the sliding sheet 5 is provided with a through hole, the diameter of the through hole is the same as the outer diameter of the sliding shaft 402, the other end of the sliding shaft 402 is in threaded connection with one end of the push rod 401, and the sliding sheet 5 is fastened between the limiting member 4022 and the end of the push rod 401. The push rod assembly 4 is simple in structure and convenient to disassemble and assemble.

In a specific embodiment, the mounting plate 1 is provided with a waist-round hole 11, the travel switch 7 is fastened on the waist-round hole 11 through a fastening piece 701, the previous travel adjustment of a locking nut and an end cover nut is cancelled, the travel switch 7 can be directly mounted in place, and the situation that the adjustment is not in place is avoided.

In a specific embodiment, the bottom of the mounting plate 1 is provided with a reinforcing rib 12, so that the structure is strengthened, the elastic deformation of the mounting plate is avoided during operation, and the reliability of the action of the travel switch 7 is ensured.

In one embodiment, the corners of the contact portion of the sliding piece 5 are arc-shaped, so that the sharp corners of the friction contact surface are all rounded, and the phenomenon of excessive resistance or clamping stagnation is reduced.

As shown in fig. 7 to 9, the intelligent switch cabinet according to the embodiment of the utility model includes a cabinet body 13, a circuit breaker 14, an electric chassis truck 8 and a middle partition board 9, the circuit breaker 14 is located on the electric chassis truck 8, the middle partition board 9 is installed on the cabinet body 13, a guide rail 901 is provided on the middle partition board 9, a slider is provided at the bottom of the electric chassis truck 8, the slider slides in the guide rail 901, a position detection piece (e.g., an end travel switch 902) is provided at one end of the guide rail 901, and the travel switch assembly as described above is provided at one end of the guide rail 901. The sliding parts are bolt bearings 801, and the number of the sliding parts is two.

According to the intelligent switch cabinet, the guide rail 901 is matched with the bolt bearing 801, the electric chassis vehicle 8 can be guided to enter and exit, the plum-blossom-shaped contact fingers on the contact arm of the breaker 14 are ensured to be in coaxial contact with the contact of the cabinet body 13, the breaker 14 is prevented from generating large movement during plugging and unplugging, and the reliability of equipment operation is improved and the service life is prolonged; meanwhile, the confirmation of the position of the breaker 14 required by one-key sequential control of the switch cabinet can be solved through the end travel switch 902 and the travel switch assembly, and the switch cabinet has the advantages of simple structure, convenience in installation and use, low manufacturing cost, good economy and convenience in popularization and application; the main structure of the original equipment is not changed, so that the production of new equipment is facilitated, the method is also suitable for the transformation of the operated old equipment, and the application range is wide.

The working principle is as follows: the middle partition board 9 is installed in the slot of the cabinet 13, and when the circuit breaker 14 enters the guide rail 901 of the cabinet 13, the bolt bearing 801 assembled under the circuit breaker 14 enters the guide rail 901 and moves along the X direction of the guide rail 901. After the two bolt bearings 801 completely enter the groove of the guide rail 901, the degree of freedom in the left-right Y direction is restricted, the circuit breaker 14 can only move back and forth along the X direction, and because the installation position of the guide rail 901 and the position of a contact installed on the cabinet body 1 are in a determined position relationship, the centers of the plum blossom contact fingers on the circuit breaker 14 and the center of the contact on the cabinet body are finally ensured to be coaxial, the two parts can be fully aligned and have minimum friction force when being inserted and pulled, and the left-right movement caused by the insertion and pulling of the circuit breaker 14 is greatly reduced. Meanwhile, the movement of the bolt bearing 801 in the guide rail 901 is rolling friction, the side wall of the chassis vehicle is constrained by the position of the bolt bearing 801, the chassis vehicle does not touch the side wall of the cabinet body during the in-and-out movement, the friction force is greatly reduced during the operation of the electric chassis vehicle 8, the stress is balanced, and the reliability and the service life are greatly improved.

When the circuit breaker 14 moves to a test position, the side surface of the cylinder of the bolt bearing 801 is in tangential contact with the end surface of the sliding sheet 5 in the travel switch assembly, and is influenced by tangential pressure of the bolt bearing 801 to push the sliding sheet 5 to move backwards, the sliding sheet 5 is fixedly connected with the sliding shaft 402 and simultaneously pushes the sliding shaft 402 to move backwards, the push rod 401 arranged on the end surface of the sliding shaft 402 pushes the travel switch 7 to contact a button to act, the travel switch 7 is connected into a signal loop, and a switch signal is given to a terminal to confirm that the circuit breaker 14 is in the test position. When the circuit breaker 14 moves to the working position, the other bolt bearing 801 directly pushes the end-stroke switch 902 to act, and a switch signal is also given to a terminal through the end-stroke switch 902 to confirm that the circuit breaker 14 is in the working position (at this time, the original bolt bearing 801 moves to the other position, and the stroke switch 7 is reset under the force of the reset spring 6).

The utility model can not only solve the confirmation of the position of the breaker 14 required by the one-key sequential control of the switch cabinet, but also guide the entering and exiting of the electric chassis vehicle 8, improve the reliability of the operation of the equipment and prolong the service life, and finally realize the one-key sequential control function of the intelligent switch cabinet.

The above are only preferred embodiments of the present invention, and the scope of the present invention is not limited to the above examples, and all technical solutions that fall under the spirit of the present invention belong to the scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may be made by those skilled in the art without departing from the principle of the utility model.

Claims

1. A travel switch assembly is characterized by comprising a mounting plate (1), a U-shaped support (2), a guide screw (3), a reset spring (6), a push rod assembly (4), a sliding sheet (5) and a travel switch (7), wherein the U-shaped support (2) is mounted on the mounting plate (1), two ends of the guide screw (3) are mounted on two side arms of the U-shaped support (2), one end of the push rod assembly (4) penetrates out of one side arm of the U-shaped support (2) and is provided with a snap ring (4021), the other end of the push rod assembly (4) penetrates out of the other side arm of the U-shaped support (2) and is provided with an impact part, the travel switch (7) is positioned on the mounting plate (1) and close to the impact part, the reset spring (6) is sleeved on the push rod assembly (4) positioned in a U-shaped groove of the U-shaped support (2), the sliding sheet (5) is fastened on the assembly (4) positioned in the U-shaped groove of the U-shaped support (2), close to one side arm of the U-shaped bracket (2) and is arranged on the guide screw (3) in a sliding way.

2. The travel switch assembly according to claim 1, wherein the push rod assembly (4) comprises a push rod (401) and a sliding shaft (402), the snap ring (4021) is located at one end of the sliding shaft (402), the other end of the sliding shaft (402) penetrates through one side arm of the U-shaped bracket (2) and then is fixedly connected with one end of the push rod (401), and the sliding sheet (5) is located at the connection position of the push rod (401) and the sliding shaft (402).

3. The travel switch assembly according to claim 2, wherein the other end of the sliding shaft (402) is provided with an external thread and a stopper (4022), one end of the push rod (401) is provided with an internal thread hole, the sliding plate (5) is provided with a through hole having the same diameter as the external diameter of the sliding shaft (402), and the other end of the sliding shaft (402) is in threaded connection with one end of the push rod (401) and fastens the sliding plate (5) between the stopper (4022) and the end of the push rod (401).

4. Travel switch assembly according to claim 1, 2 or 3, characterized in that a waist-round hole (11) is provided on the mounting plate (1), the travel switch (7) being fastened to the waist-round hole (11) by means of a fastener (701).

5. Travel switch assembly according to claim 1, 2 or 3, characterized in that the bottom of the mounting plate (1) is provided with a stiffening rib (12).

6. Travel switch assembly according to claim 1, 2 or 3, characterized in that the corners of the contact portion of the slider (5) are rounded.

7. An intelligent switch cabinet comprises a cabinet body (13), a circuit breaker (14), an electric chassis (8) and a middle partition plate (9), wherein the circuit breaker (14) is located on the electric chassis (8), the middle partition plate (9) is installed on the cabinet body (13), a guide rail (901) is arranged on the middle partition plate (9), a sliding part is arranged at the bottom of the electric chassis (8), the sliding part slides in the guide rail (901), the intelligent switch cabinet is characterized in that one end of the guide rail (901) is provided with a position detection part, and one end of the guide rail (901) is provided with a travel switch assembly according to any one of claims 1-6.

8. Intelligent switchgear, according to claim 7, characterized in that said sliding element is a bolt bearing (801).

9. Intelligent switchgear, according to claim 8, characterized in that said bolt bearing (801) is in number of several.

10. Intelligent switchgear, according to claim 7 or 8 or 9, characterized in that said position detection member is an end-of-travel switch (902).