WO2021036323A1

WO2021036323A1 - Hydraulic lifting underground ring main unit system having stroke-controlled guide rail and control method

Info

Publication number: WO2021036323A1
Application number: PCT/CN2020/088278
Authority: WO
Inventors: 隰桂吉; 张正国; 钱忠; 李念峰; 何宏伟; 刘国海
Original assignee: 南京高立工程机械有限公司
Priority date: 2019-08-30
Filing date: 2020-04-30
Publication date: 2021-03-04
Also published as: CN111313309A; CN211088937U

Abstract

Disclosed are a hydraulic lifting underground ring main unit system having a stroke-controlled guide rail and a control method. Said system comprises a vertical lifting structure, a first stroke switch, a second stroke switch and a ring main unit. The vertical lifting structure comprises a lifting frame, a sprocket support, a sprocket support guide rail, a first guide wheel, a sprocket, a lifting platform, a lifting platform guide rail, a second guide wheel, a chain connecting plate, chains, a hydraulic rod, a hydraulic pump, and a hydraulic pipe. The first stroke switch and the second stroke switch are respectively provided at the top and the bottom of the lifting frame, the lifting platform touches the first stroke switch or the second stroke switch when moving to a predetermined stop position, so that the ring main unit stops at a specified position, ensuring that the stop position where the ring main unit is lifted above the ground and the stop position where the ring main unit is buried in the ground are consistent, avoiding the situation where stopping beyond the specified position during lifting due to improper operation by an operator and causes damage to the lifting structure and the ring main unit, thereby prolonging the service life of the ring main unit.

Description

Guide rail hydraulic lifting type underground ring network cabinet system with controllable stroke and control method

Technical field

The invention relates to the field of buried ring network cabinets, in particular to a guide rail hydraulic lifting type underground ring network cabinet system with a controllable stroke and a control method.

Background technique

The ring network cabinet is a group of transmission and distribution electrical equipment installed in a metal or non-metal insulated cabinet or made into an assembled spaced ring network power supply unit. Its core part uses load switches and fuses. It has a simple structure, small size, and Low price, can improve power supply parameters and performance, and power supply safety and other advantages. It is widely used in power distribution stations and box-type substations of load centers in urban residential quarters, high-rise buildings, large public buildings, factories and enterprises. For urban commercial centers, industrial parks and densely populated areas that are restricted by space or require aesthetics, It is often hoped to hide the ring network cabinet and install it in the underground space, so as to overcome the problems of not occupying urban roads, green area, and not affecting the appearance of the city and the safety of pedestrians.

Since the lifting and lowering of the underground ring main unit is operated by the staff, the stop position of the ring main unit must be the same every time when the ring main unit is raised to the ground and buried in the ground. If an over-stop occurs, the lifting structure and the ring will be affected. The network cabinet causes damage, so the lifting stroke of the lifting ring network cabinet needs to be controlled.

Summary of the invention

The purpose of the present invention is to provide a guide rail hydraulic lifting type buried ring main unit with a controllable stroke, which solves the problem of damage to the lifting structure and the ring main unit due to over-stops during the lifting process of the existing lifting type buried ring main unit.

In order to achieve the above objective, the present invention proposes the following technical solution: a guide rail hydraulic lifting type buried ring network cabinet system with a controllable stroke is set in the foundation pit and includes a vertical lifting structure, a first travel switch, a second travel switch and a ring network The vertical lifting structure is installed in the foundation pit, the ring network cabinet is installed on the vertical lifting structure, and the vertical lifting structure includes a lifting frame, a sprocket bracket, a sprocket bracket guide track, a first guide wheel, and a chain Wheel, lifting platform, lifting platform guide track, second guide wheel, chain connecting plate, chain, hydraulic rod, hydraulic pump and hydraulic oil pipe;

The lifting frame is installed at the bottom of the foundation pit, the lifting frame includes a base and four uprights standing on the four corners of the base, the number of guide rails for the sprocket bracket is four, and the four guide rails for the sprocket bracket They are respectively fixedly connected to the four uprights of the lifting frame, the sprocket bracket is slidably connected to the sprocket bracket guide rail through the first guide wheels at the upper and lower ends, and the first guide wheel is rotatably arranged on the sprocket The upper and lower ends of the bracket, the sprocket is rotatably installed on the top of the sprocket bracket;

The bottom of the sprocket bracket is fixedly connected with the output end of the hydraulic rod, the bottom of the hydraulic pump is fixed on the base of the lifting frame, and the hydraulic pump is connected with two hydraulic rods through hydraulic oil pipes;

The lifting platform guide rail is fixedly connected to the four uprights of the lifting frame, the lifting platform is slidably connected to the lifting platform guide rail through a second guide wheel, and the second guide wheel is rotatably fixed to the lifting platform At the four corners, the ring network cabinet is fixedly installed on the top of the lifting platform;

The chain connecting plates are respectively welded to the four uprights of the lifting frame and the four corners of the lifting platform, the chain is meshed with the sprocket, and both ends of the chain are respectively fixed on the lifting frame and the chain connecting plates of the lifting platform;

The first travel switch is installed at the top of the lifting frame, the second travel switch is installed at the bottom of the lifting frame, and the first travel switch and the second travel switch are respectively located at the upper end and the lower end of the movement stroke of the lifting platform.

Preferably, the bottom of the lifting frame is fixed to the lower bottom surface of the inner cavity of the foundation pit by means of expansion bolts.

Preferably, the lifting frame is welded by a steel structure, and both the sprocket bracket and the lifting platform are welded with square tubes to form a square structure.

Preferably, the sprocket bracket guide rail and the lifting platform guide rail are both C-shaped bent steel structures.

Preferably, the chain connecting plate is a steel piece.

Preferably, it further includes a foundation pit cover, an inspection door, an inspection ladder, a drainage pipe, and a ventilation pipe. The foundation pit cover is fixed on the top of the ring net cabinet, and drainage grooves are provided around the upper end of the foundation pit. The drainage groove is connected with a drainage pipe, the bottom of the foundation pit cover is provided with a boss that matches the drainage groove at the upper end of the foundation pit, and a sealing rubber strip is installed on the boss;

The side wall of the foundation pit is provided with a reserved access opening, the access door is installed at the reserved access opening of the foundation pit, the maintenance climbing ladder is installed at the bottom of the foundation pit, and the top of the maintenance climbing ladder is connected to the reserved access opening. The ventilation pipe is connected with the foundation pit.

Preferably, the foundation pit cover is a steel structure.

When the up button SB2 is pressed, the lifting platform moves up. When it reaches the position of the first travel switch SQ1, the first travel switch SQ1 is disconnected and the lifting platform stops running; when the travel button SB3 is pressed, the lifting platform goes down. When the second travel switch SQ2 is at the position, the second travel switch SQ2 is disconnected, and the lifting platform stops running; during the operation, if you need to stop, press the stop button SB1, and the lifting platform can stop running; in summary, By adjusting the position of the travel switch, the purpose of the controllable travel is realized, and the stopping position of the lift to the ground and the stop position of the buried underground is always kept consistent.

Beneficial effect

The technical solution of this application has the following technical effects:

1. In the present invention, a first travel switch and a second travel switch are arranged on the top and bottom of the lifting frame, and the first travel switch or the second travel switch will be touched when the lifting platform moves to the predetermined stop position, thereby making the ring network cabinet Stop at the designated position to ensure that the stop positions of the ring main unit when raised to the ground and buried in the ground are consistent, avoid the situation that the lifting structure and the ring main unit are damaged due to improper operation by the staff, and the ring main unit is extended. Life.

2. The present invention completes the lifting of the buried ring network cabinet through the vertical lifting structure. The hydraulic pump is used to drive the expansion and contraction of the hydraulic rod. The expansion and contraction of the hydraulic rod drives the movement of the sprocket bracket and the sprocket. The sprocket and its two ends are respectively fixed on the chain connecting plate of the lifting frame and the lifting platform. Therefore, the up and down movement of the sprocket bracket will drive the movement of the lifting platform, and then drive the ring network cabinet to lift. The structure design is reasonable and easy It is made and installed, is not easy to be damaged, has strong practicability, and is suitable for large-scale promotion.

It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below can be regarded as part of the inventive subject matter of the present disclosure as long as such concepts are not mutually contradictory.

The foregoing and other aspects, embodiments and features of the teachings of the present invention can be more fully understood from the following description with reference to the accompanying drawings. Other additional aspects of the present invention, such as the features and/or beneficial effects of the exemplary embodiments, will be apparent in the following description, or learned from the practice of the specific embodiments taught in accordance with the present invention.

Description of the drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in each figure may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in every figure. Now, the embodiments of various aspects of the present invention will be described through examples and with reference to the accompanying drawings, in which:

Figure 1 is a schematic diagram of the structure of the present invention.

Figure 2 is a schematic diagram of the state of the ring main unit of the present invention descending into the foundation pit.

Fig. 3 is an enlarged view of the partial structure of A in Fig. 1 of the present invention.

Fig. 4 is an enlarged view of the partial structure of B in Fig. 2 of the present invention.

Fig. 5 is an enlarged view of the partial structure of C in Fig. 1 of the present invention.

Figure 6 is a schematic diagram of the electrical principle of the present invention.

In the figure, the meanings of the reference signs are as follows: 1. Foundation pit; 2. Lifting frame; 3. Sprocket support; 4. Sprocket support guide track; 5. First guide wheel; 6. Sprocket; 7. Lifting Platform; 8. Lifting platform guide track; 9. Second guide wheel; 10. Chain connecting plate; 11. Chain; 12. Hydraulic rod; 13. Hydraulic pump; 14. Hydraulic tubing; 15. Ring network cabinet; 16. Base Pit cover; 17, access door; 18, maintenance ladder; 19, drain pipe; 20, ventilation pipe; 21, first travel switch SQ1; 22, second travel switch SQ2; 23, up button SB2; 24, down button SB3; 25. Stop button SB1.

detailed description

In order to better understand the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

In this disclosure, various aspects of the present invention are described with reference to the accompanying drawings, in which numerous illustrated embodiments are shown. The embodiments of the present disclosure are not necessarily intended to include all aspects of the present invention. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the present invention are not Limited to any implementation. In addition, some aspects disclosed in the present invention can be used alone or in any appropriate combination with other aspects disclosed in the present invention.

As shown in Figure 1-2, a guide rail hydraulic lifting type buried ring network cabinet with a controllable stroke is set in the foundation pit and includes a vertical lifting structure, a first travel switch 21, a second travel switch 22 and Ring network cabinet 15, the vertical lifting structure is installed in the foundation pit 1, the ring network cabinet 15 is installed on the vertical lifting structure, the vertical lifting structure includes the lifting frame 2, the sprocket bracket 3, the sprocket bracket guide rail 4, and the first guide wheel 5. Sprocket 6, lifting platform 7, lifting platform guide rail 8, second guide wheel 9, chain connecting plate 10, chain 11, hydraulic rod 12, hydraulic pump 13, and hydraulic oil pipe 14.

As shown in Figure 3, Figure 4 and Figure 6, the first travel switch (SQ1) 21 is installed on the top of the lifting frame 2, the second travel switch (SQ2) 22 is installed on the bottom of the lifting frame 2, the first travel switch (SQ1) ) 21 and the second travel switch (SQ2) 22 are respectively located at the upper end and the lower end of the movement stroke of the lifting platform 7, by setting the first travel switch (SQ1) 21 and the second travel switch (SQ2) on the top and bottom of the lifting frame 2 ) 22. When the lifting platform 7 moves to the predetermined stop position, it will touch the first travel switch (SQ1) 21 or the second travel switch (SQ2) 22, and then make the ring main unit 15 stop at the designated position, and ensure the ring main unit 15 The stop positions when raised to the ground and buried in the ground are kept consistent, avoiding damage to the lifting structure and the ring main unit 15 due to improper operation by the staff, and prolongs the service life of the ring main unit 15. (About travel switch)

The lifting frame 2 is installed at the bottom of the foundation pit 1. The lifting frame 2 includes a base and four uprights standing on the four corners of the base. The number of sprocket bracket guide rails 4 is four, and the four sprocket bracket guide rails 4 are respectively fixedly connected On the four uprights of the lifting frame 2, the sprocket bracket 3 is slidably connected to the sprocket bracket guide rail 4 through the first guide wheels 5 at the upper and lower ends, and the first guide wheel 5 is rotatably arranged on the sprocket bracket 3 At the upper and lower ends, the sprocket 6 is rotatably mounted on the top of the sprocket bracket 3.

The bottom of the sprocket bracket 3 is fixedly connected with the output end of the hydraulic rod 12, the bottom of the hydraulic pump 13 is fixed on the base of the lifting frame 2, and the hydraulic pump 13 communicates with the two hydraulic rods 12 through a hydraulic oil pipe 14.

The lifting platform guide rail 8 is fixedly connected to the four uprights of the lifting frame 2, the lifting platform 7 is slidably connected to the lifting platform guide rail 8 through the second guide wheel 9, and the second guide wheel 9 is rotatably fixed to the lifting platform 7 The ring main unit 15 is fixedly installed on the top of the lifting platform 7 at the four corners.

The chain connecting plates 10 are respectively welded to the four uprights of the lifting frame 2 and the four corners of the lifting platform 7. The chain 11 meshes with the sprocket 6, and the two ends of the chain 11 are respectively fixed on the chain connecting plates 10 of the lifting frame 2 and the lifting platform 7 , Through the vertical lifting structure to complete the lifting of the buried ring network cabinet 15, the hydraulic pump 13 is used to drive the expansion and contraction of the hydraulic rod 12, and the expansion and contraction of the hydraulic rod 12 drives the sprocket bracket 3 and the sprocket 6 to move. The sprocket 6 on the wheel bracket 3 and its two ends are respectively fixed on the lifting frame 2 and the chain connecting plate 10 of the lifting platform 7, so the up and down movement of the sprocket bracket 3 will drive the movement of the lifting platform 7, and then Drive the ring main unit 15 to rise and fall, the structure design is reasonable, it is easy to make and install, and it is not easy to be damaged. It has strong practicability and is suitable for large-scale promotion.

In this embodiment, the bottom of the lifting frame 2 is fixed to the bottom surface of the inner cavity of the foundation pit 1 by expansion bolts.

In this embodiment, the lifting frame 2 is welded by a steel structure, and the sprocket bracket 3 and the lifting platform 7 are both square structures welded by square tubes.

In this embodiment, the sprocket bracket guide rail 4 and the lifting platform guide rail 8 are both C-shaped bent steel structures.

In this embodiment, the chain connecting plate 10 is a steel piece.

In this embodiment, it also includes a foundation pit cover 16, an overhaul door 17, an overhaul ladder 18, a drain pipe 19, and a ventilation pipe 20. The foundation pit cover 16 is fixed on the top of the ring network cabinet 15, and the upper end of the foundation pit 1 is surrounded by There is a drainage groove, and a drainage pipe 19 is connected to the drainage groove. The bottom of the foundation pit cover 16 is provided with a boss that matches with the upper drainage groove of the foundation pit 1. The boss is equipped with a sealing tape. Through the setting of the sealing tape, it can be The waterproof performance of the foundation pit cover 16 is increased. Through the setting of the foundation pit cover 16, the top of the foundation pit 1 can be covered by the ring network cabinet 15 when it is lowered to the ground of the foundation pit 1, so as to prevent foreign matter from falling into the foundation pit 1, greatly The safety of the ring main unit 15 is increased. The foundation pit cover is a steel structure. The access door 17 and the maintenance ladder 18 are set to facilitate the staff to enter the foundation pit 1 for maintenance, which brings convenience to the maintenance personnel. It is conducive to the normal use of the ring network cabinet 15. The drainage pipe 19 can drain the accumulated water on the top of the foundation pit 1 in time to avoid the accumulation of water in the foundation pit 1. The installation of the ventilation pipe 20 can help the ring network The cabinet 15 dissipates heat to avoid excessive heat accumulation in the ring main unit 15 and the foundation pit 1, which is beneficial to prolong the service life of the ring main unit 15.

When in use, the hydraulic pump 13 is turned on. When the hydraulic pump 13 works, it drives the expansion and contraction of the hydraulic rod 12, and the expansion and contraction of the hydraulic rod 12 drives the up and down movement of the sprocket bracket 3. Because the chain 11 engages with the sprocket on the sprocket bracket 3 6 and its two ends are respectively fixed on the lifting frame 2 and the chain connecting plate 10 of the lifting platform 7, so the up and down movement of the sprocket bracket 3 will drive the up and down movement of the lifting platform 7 at the same time. The ring network cabinet 15 fixed on the lifting platform 7 can be vertically moved up and down, so that the ring network cabinet 15 can be buried and exposed on the ground.

When the lifting platform 7 rises to the required stop position of the ring main unit 15 during the ascent process, it will touch the first travel switch 21, and the ascent stops, and when the lifting platform 7 descends to the required stop position of the ring main unit 15 during the descending process It will touch the second travel switch 22 and stop when it descends. Therefore, it can ensure that the stop positions of the ring main unit ascending to the ground and buried in the ground are consistent each time, avoiding the impact of the lifting and stopping of the lifting structure and the lifting structure due to improper operation by the staff. The damage caused by the ring main unit prolongs the service life of the ring main unit. The structure design is reasonable, easy to make and install, and it is not easy to be damaged. It has strong practicability and is suitable for large-scale promotion.

Although the present invention has been disclosed as above in preferred embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field of the present invention can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be determined by the claims.

Claims

The guide rail hydraulic lifting type underground ring network cabinet system with controllable stroke is set in the foundation pit, and is characterized in that it includes a vertical lifting structure, a first travel switch, a second travel switch and a ring network cabinet. The vertical lifting structure is installed In the foundation pit, the ring network cabinet is installed on a vertical lifting structure, and the vertical lifting structure includes a lifting frame, a sprocket bracket, a sprocket bracket guide rail, a first guide wheel, a sprocket, a lifting platform, and a lifting platform guide Track, second guide wheel, chain connecting plate, chain, hydraulic rod, hydraulic pump and hydraulic tubing;

The lifting frame is installed at the bottom of the foundation pit, the lifting frame includes a base and four uprights standing on the four corners of the base, the number of guide rails for the sprocket bracket is four, and the four guide rails for the sprocket bracket They are respectively fixedly connected to the four uprights of the lifting frame, the sprocket bracket is slidably connected to the sprocket bracket guide rail through the first guide wheels at the upper and lower ends, and the first guide wheel is rotatably arranged on the sprocket The upper and lower ends of the bracket, the sprocket is rotatably installed on the top of the sprocket bracket;

The bottom of the sprocket bracket is fixedly connected with the output end of the hydraulic rod, the bottom of the hydraulic pump is fixed on the base of the lifting frame, and the hydraulic pump is connected with two hydraulic rods through hydraulic oil pipes;

The lifting platform guide rail is fixedly connected to the four uprights of the lifting frame, the lifting platform is slidably connected to the lifting platform guide rail through a second guide wheel, and the second guide wheel is rotatably fixed to the lifting platform At the four corners, the ring network cabinet is fixedly installed on the top of the lifting platform;

The chain connecting plates are respectively welded to the four uprights of the lifting frame and the four corners of the lifting platform, the chain is meshed with the sprocket, and both ends of the chain are fixed to the chain connecting plates of the lifting frame and the lifting platform respectively;

The first travel switch is installed at the top of the lifting frame, the second travel switch is installed at the bottom of the lifting frame, and the first travel switch and the second travel switch are respectively located at the upper end and the lower end of the movement stroke of the lifting platform.
The buried ring network cabinet system according to claim 1, wherein the bottom of the lifting frame is fixed to the bottom surface of the inner cavity of the foundation pit by means of expansion bolts.
The buried ring main unit according to claim 2, wherein the lifting frame is welded by a steel structure, and the sprocket bracket and the lifting platform are both welded with square tubes to form a square structure.
The buried ring network cabinet system according to claim 3, wherein the sprocket bracket guide rail and the lifting platform guide rail are both C-shaped bent steel structures.
The buried ring network cabinet system according to claim 4, wherein the chain connecting plate is a steel piece.
The buried ring main unit system according to claim 5, characterized in that it further comprises a foundation pit cover, an access door, an overhaul ladder, a drainage pipe and a ventilation pipe, the foundation pit cover is fixed on the top of the ring main unit A drainage groove is provided around the upper end of the foundation pit, and a drainage pipe is connected to the drainage groove. The bottom of the foundation pit cover is provided with a boss that matches the drainage groove at the upper end of the foundation pit. seal;

The side wall of the foundation pit is provided with a reserved access opening, the access door is installed at the reserved access opening of the foundation pit, the maintenance climbing ladder is installed at the bottom of the foundation pit, and the top of the maintenance climbing ladder is connected to the reserved access opening. The ventilation pipe is connected with the foundation pit.
The buried ring main unit system according to claim 6, characterized in that: the foundation pit cover is a steel structure.
The control method of the buried ring network cabinet system according to claim 1, characterized in that:

Turn on the hydraulic pump. When the hydraulic pump works, it drives the expansion and contraction of the hydraulic rod. The expansion and contraction of the hydraulic rod drives the up and down movement of the sprocket bracket; the chain is engaged with the sprocket on the sprocket bracket and its two ends are respectively fixed to the lifting frame and the lifting platform. On the chain connecting plate, the up and down movement of the sprocket bracket simultaneously drives the up and down movement of the lifting platform;

When the up button is pressed, the lifting platform moves up, and when it reaches the position of the first travel switch, the first travel switch is disconnected and the lifting platform stops running; when the travel button is pressed, the lifting platform goes down, and when it reaches the second travel switch At the position, the second travel switch is disconnected and the lifting platform stops running; during operation, if you need to stop, press the stop button, and the lifting platform stops running; by adjusting the position of the travel switch, the controllable travel can be realized to ensure The stop positions when raised to the ground and buried in the ground are the same.