CN108557698A - Liftable type station trolley - Google Patents

Abstract

The invention discloses a liftable transformer substation inspection and maintenance trolley, which is composed of a horizontal frame, a vertical door frame, a handcart guide rail, an adjustment mechanism for adjusting the height and width of the handcart guide rail, a hydraulic mechanism for lifting a circuit breaker handcart, and a handle. The hydraulic mechanism is composed of a boom, a pulley, a gear, a chain, a hydraulic pump and a hydraulic lifting column. First, the handcart of the circuit breaker is moved to the bottom of the boom through the handcart guide rail, which can be adjusted according to the width of the circuit breaker handcart. Make appropriate adjustments, then hang the handcart of the circuit breaker through the hook on the boom, turn on the hydraulic pump to provide power for the hydraulic lifting column, the lifting column of the hydraulic lifting column rises upwards and drives the gear at the top of the lifting column to move upwards, and the chain Since one end is fixed on the fixed end of the hydraulic lifting column, the other end bypassing the gear begins to shrink upwards and drives the boom upwards, and finally drives the circuit breaker handcart upwards to complete the lifting action, and the lowering operation is reversed.

Description

Liftable substation maintenance trolley

technical field

The invention relates to substation maintenance, in particular to a liftable substation maintenance trolley.

Background technique

With the gradual popularization of integrated automation and intelligent substations, such substations generally adopt central switchgear. The original switch maintenance trolley is an important tool for central switchgear from operation to maintenance, and its functional stability is poor, which greatly affects maintenance. Efficiency and there are greater security risks. The main components of the existing overhaul trolley are wheels, a rectangular frame, height adjustment wheels, and an overhaul platform.

The chassis of the circuit breaker handcart is fixed under the circuit breaker mechanism. When the mechanical structure of the circuit breaker handcart chassis is stuck and the electrical circuit fails during daily maintenance, the existing maintenance trolley cannot meet the maintenance conditions. During the moving process of the existing maintenance trolley and the circuit breaker handcart, the contact surface may have friction and collision, which will cause damage and deformation of the outer insulating paint of the two. Since the existing substation switch cabinets are divided into main transformer cabinets, line cabinets and PT cabinets with different sizes, in order to meet the needs of daily operation and maintenance, each cabinet needs to be equipped with at least 2 or more maintenance Cars, according to the survey, generally each 220kV or 110kV substation needs to be equipped with 8-10 various maintenance cars, which requires a large investment and takes up a lot of production space. When a substation is newly built or a switchgear interval is added, it is necessary to manually lift the circuit breaker handcart onto the original maintenance trolley, and then push it into the switchgear. A circuit breaker handcart weighs about 100kg and requires manpower to carry it to 800mm On the high maintenance trolley, there is a possibility of overturning, which endangers the safety of personal equipment.

Contents of the invention

In order to solve the problem that the existing maintenance trolley cannot overhaul the circuit breaker handcart chassis and the existing maintenance trolley takes time and effort, the invention provides a liftable substation maintenance trolley, which can not only make the maintenance orderly through the cooperation of various components , safe, time-saving and labor-saving, and the stability can be improved through the telescopic function of the horizontal frame, which is convenient for inspection and maintenance of the circuit breaker handcart chassis.

The present invention realizes through following technical scheme:

The liftable substation maintenance trolley includes a horizontal frame and a vertical door frame. The shape of the horizontal frame is a rectangular frame with openings, and the lower ends of the four corners of the horizontal frame are equipped with universal casters. The vertical door frame is vertically installed on the upper end of the horizontal vehicle frame, and the inner side of the vertical door frame is provided with a rectangular groove; the vertical door frame has two cross beams arranged in the horizontal direction and parallel to each other, and the two cross beams are It is vertically rigidly connected with the vertical mast, and the two beams are slid and connected to a horizontal bracket along the horizontal direction, and the two horizontal brackets are connected to a vertical bracket, and the two vertical brackets are located on the Above the frame and all on the same horizontal plane, a handcart guide rail is provided at the upper end of each vertical bracket, and the two handcart guide rails are parallel to each other; a hydraulic lifting system is also included, and the hydraulic lifting system includes a boom, Pulleys, gears, chains, hydraulic pumps and hydraulic lifting columns, the shape of the boom is a trapezoidal frame, a set of pulleys are respectively installed at both ends of the lower bottom of the trapezoidal frame, two hooks are arranged at the upper bottom, and the pulleys are set In the rectangular groove inside the vertical mast, the hydraulic pump and the hydraulic lifting column are installed on the horizontal vehicle frame, the hydraulic pump provides power for the hydraulic lifting column, and the lifting column of the hydraulic lifting column is vertically upward, The top of the lifting column is equipped with a gear, one end of the chain is connected to the fixed end of the hydraulic lifting column, and the other end is connected to the lower bottom of the trapezoidal frame after going around the gear and meshing with the gear. The liftable substation maintenance trolley is mainly composed of a horizontal frame, a vertical mast, handcart guide rails, and a hydraulic mechanism for hoisting a circuit breaker handcart. The hydraulic lifting column is composed of the first move the circuit breaker handcart to the bottom of the boom through the handcart guide rail, which can be properly adjusted according to the width of the circuit breaker handcart, and then hang on the circuit breaker handcart through the hook on the boom arm. On the hoisting hole of the car, the hydraulic pump is turned on to provide power for the hydraulic lifting column, and the lifting column of the hydraulic lifting column rises upward to drive the gear at the top of the lifting column to move upward. Since one end of the chain is fixed on the fixed end of the hydraulic lifting column, the chain is wound around The other end of the passing gear begins to contract upwards and drives the boom to move upwards, and finally drives the handcart of the circuit breaker to move upwards to complete the lifting action, and the lowering operation is reversed.

Optionally, the swivel casters are equipped with brake devices to avoid slipping during operation.

Further, the horizontal vehicle frame is composed of a main steel frame and two auxiliary steel frames, the main steel frame is placed horizontally, and the two auxiliary steel frames are vertically rigidly connected to the two ends of the main steel frame respectively, and The two sub-steel frames are parallel to each other in the same horizontal plane; the two sub-steel frames are all telescopic structures, and the internal horizontal direction of the telescopic structure is provided with a screw rod, and the screw rod is provided with a handle A , the rectangular frame structure is elongated by the telescopic structure to improve the stability of the horizontal frame, and the telescopic structure is controlled by an internal screw rod to control expansion and contraction, and the rocker A is used to control the screw rod.

Further, screw rods are arranged in the horizontal brackets, and cranks B are arranged on the screw rods, and the crank handles B are used to control the screw rods in the horizontal brackets to complete the horizontal movement of the horizontal brackets.

Further, the 2 handcart guide rails are connected to the vertical bracket through 4 screw lifting mechanisms, and 2 screw lifting mechanisms are set between each handcart guide rail and the corresponding vertical bracket, and the 4 screw lifting mechanisms The rod lifting mechanisms are all connected to the crank C, and the crank C is used to simultaneously control the lifting action of the four screw lifting mechanisms.

Further, the inner sides of the two handcart guide rails are provided with limiting holes.

Further, a limiting device is provided on the vertical bracket, and the limiting device is connected to the other end of the vertical bracket.

Further, the upper surface of the guide rail of the handcart is provided with a pressure sensor device, and the pressure sensor device is used to detect the value of the pressure on the guide rail of the handcart by an object placed on the upper surface of the guide rail of the handcart.

Optionally, at least two sets of pulleys are provided for each set.

Further, the vertical mast is also provided with handles and operation buttons of the hydraulic pump.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

1. The liftable maintenance trolley adopts a hollow design, which effectively solves the dilemma that the circuit breaker handcart chassis cannot be overhauled in the daily maintenance work; it solves the problem of contact between the existing maintenance trolley and the circuit breaker handcart during the movement. There is the possibility of friction and collision on the surface, resulting in damage and deformation of the outer insulating paint of the two.

2. The liftable maintenance trolley can greatly reduce the number of substation maintenance trolley configurations due to its excellent characteristics that the width of the maintenance platform can be adjusted freely. Taking a 110kV substation as an example, there are 2 PT cabinets, 2 high-current cabinets, and 2-3 outlet cabinets. If a liftable maintenance trolley is used, only 2-3 trolleys are required to meet the daily maintenance and maintenance requirements. It not only saves production cost but also reduces land occupation.

3. The liftable maintenance trolley can realize the function of lifting the handcart of the circuit breaker directly from the ground to the circuit breaker room of the switch cabinet, eliminating the need to lift the handcart of the circuit breaker by manpower when the substation is newly built or the interval of the switch cabinet is added. It saves time and labor, and avoids the safety risks that may arise during manual handling.

4. It effectively avoids the safety risks caused by cross-operation between teams when maintenance personnel perform maintenance and experiments on switch cabinets and circuit breaker handcarts. In the actual operation process, a switchgear interval requires relay protection personnel to carry out signal matching, protection debugging, and the entire group of transmission, etc., routine inspections by substation maintenance personnel, mechanical characteristic tests by high-voltage experimenters, loop resistance, insulation, etc. For resistance, high voltage test and other work, each team inevitably involves cross-work during the work process, and cross-work is a relatively high risk point, and there has been no effective solution. In the daily work, the liftable maintenance trolley can take out all the circuit breaker handcarts in the switch cabinet and place them in a fixed position as a separate high-voltage test and maintenance site. This method separates the operators and effectively avoids Cross operation also greatly improves the maintenance efficiency.

Description of drawings

The drawings described here are used to provide a further understanding of the embodiments of the present invention, constitute a part of the application, and do not limit the embodiments of the present invention. In the attached picture:

Fig. 1 is the schematic diagram of the front view structure of the present invention;

Fig. 2 is a schematic view of the left view structure of the present invention;

Fig. 3 is a top view structural schematic diagram of the handcart guide rail, the vertical bracket and the screw lifting mechanism.

Marks and names of corresponding parts in the attached drawings:

1-hook, 2-handcart guide rail, 3-limiting device, 4-pulley, 51-handle A, 52-handle B, 53-handle C, 6-gear, 7-chain, 8-hydraulic Pump, 9- screw lifting mechanism, 10- handle, 11- universal caster, 12- pressure sensor device, 13- operation button.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples and accompanying drawings. As a limitation of the present invention.

Example 1

As shown in Figures 1 and 2, the liftable substation maintenance trolley includes a horizontal frame and a vertical door frame. The shape of the horizontal frame is a rectangular frame with openings, and the lower ends of the four corners of the horizontal frame All are equipped with universal casters 11, the vertical door frame is vertically installed on the upper end of the horizontal vehicle frame, and the inner side of the vertical door frame is provided with a rectangular groove; there are two horizontally arranged and parallel to each other on the vertical door frame The two beams are vertically rigidly connected with the vertical gantry, and the two beams are slid and connected to a horizontal bracket along the horizontal direction, and the two horizontal brackets are connected to a vertical bracket. Both vertical brackets are located above the horizontal frame and are on the same horizontal plane. A handcart guide rail 2 is provided on the upper end of each vertical bracket, and the two handcart guide rails 2 are parallel to each other; hydraulic lifting system, the hydraulic lifting system includes a boom, a pulley 4, a gear 6, a chain 7, a hydraulic pump 8 and a hydraulic lifting column, the shape of the boom is a trapezoidal frame, and a set of The pulley 4 and the upper bottom are provided with two hooks 1, and the pulley 4 is arranged in the rectangular groove inside the vertical mast, the hydraulic pump 8 and the hydraulic lifting column are all installed on the horizontal vehicle frame, and the hydraulic pump 8 to provide power for the hydraulic lifting column, the lifting column of the hydraulic lifting column is vertically upward, the top of the lifting column is equipped with a gear 6, one end of the chain 7 is connected to the fixed end of the hydraulic lifting column, the other end bypasses the gear 6 and After meshing with the gear 6, it is connected to the lower bottom of the trapezoidal frame. The liftable substation maintenance trolley is mainly composed of a horizontal frame, a vertical mast, a handcart guide rail, and a hydraulic mechanism for hoisting a circuit breaker handcart; wherein the hydraulic mechanism passes through a boom, a pulley 4, a gear 6, a chain 7, Composed of hydraulic pump 8 and hydraulic lifting column, the circuit breaker handcart is moved to the bottom of the boom through the handcart guide rail 2. The handcart guide rail 2 can be properly adjusted according to the width of the circuit breaker handcart. The hook 1 is hung on the hoisting hole of the circuit breaker handcart, and the hydraulic pump 8 is turned on to provide power for the hydraulic lifting column. The lifting column of the hydraulic lifting column rises upward to drive the gear 6 at the top of the lifting column to move upward. The chain 7 is fixed at one end. At the fixed end of the hydraulic lifting column, the other end bypassing the gear 6 starts to shrink upwards and drives the boom to move upwards, and finally drives the handcart of the circuit breaker to move upwards to complete the lifting action, and the lowering operation is reversed.

Described swivel caster 11 all has brake device, avoids the situation that slips car to occur in operation process.

The horizontal vehicle frame is composed of a main steel frame and two auxiliary steel frames, the main steel frame is placed horizontally, and the two auxiliary steel frames are vertically rigidly connected to the two ends of the main steel The two sub-steel frames are parallel to each other in the same horizontal plane; the two sub-steel frames are all telescopic structures, and a screw rod is arranged in the horizontal direction inside the telescopic structure, and the screw rod is provided with a handle A51, which can be The telescopic structure elongates the rectangular frame structure to improve the stability of the horizontal frame, and the telescopic structure is controlled by an internal screw rod to control expansion and contraction, and the rocker A51 is used to control the screw rod.

Screw rods are arranged in the horizontal brackets, and a crank handle B52 is arranged on the screw rods, and the crank handle B52 is used to control the screw rods in the horizontal brackets to complete the left and right movement of the horizontal brackets.

The insides of the two handcart guide rails 2 are all provided with limiting holes 31 .

There are at least two sets of pulleys 4 in each group.

The vertical mast is also provided with a handle 10 and an operation button 13 of the hydraulic pump 8; the hydraulic pump 8 and the hydraulic lifting column are all prior art.

Example 2

As shown in Figures 2 and 3, only one handcart guide rail 2, a vertical bracket and two screw lifting mechanisms 9 are shown in Figure 3, and the two handcart guide rails 2 are connected to each other by four screw lifting mechanisms 9. Vertical bracket connection, two screw lifting mechanisms 9 are set between each handcart guide rail 2 and the corresponding vertical bracket, and the four screw lifting mechanisms 9 are all connected to the crank handle C53, and the crank handle C53 is used to control the lifting action of 4 screw rod lifting mechanisms 9 at the same time.

A limiting device 3 is arranged on the vertical bracket, and the limiting device 3 is connected to the other end of the vertical bracket.

The upper surface of the handcart guide rail 2 is provided with a pressure sensor device 12, and the pressure sensor device 12 is used to detect the value of the pressure on the handcart guide rail 2 by an object placed on the upper surface of the handcart guide rail 2. The pressure sensor device 12 is an existing technology.

Example 3

As shown in Figures 1, 2, and 3, the operation process of the liftable substation maintenance trolley is as follows: use the handle 10 to control the trolley, before reaching the designated switch cabinet, adjust the crank handle B52 to make the vertical bracket and the circuit breaker handcart The same width, continue to control the trolley, so that the limit device 3 is just inserted into the limit hole of the switch cabinet; lock the trolley through the brake device of the universal caster 11 to avoid slipping during the subsequent operation, and then pass Adjust the crank C53 to make the guide rail 2 of the handcart equal to the handcart of the circuit breaker, then pull the handcart of the circuit breaker onto the guide rail 2 of the handcart, and ensure that the limit device of the circuit breaker just falls to the limit on the guide rail 2 of the handcart In the hole 31, the next step is to hook the hook 1 in the hoisting hole of the circuit breaker handcart, first lift the circuit breaker handcart through the hydraulic pump operation button 13 until the pressure sensor device 12 detects no pressure, and then adjust the crank B52 Until the width of the bracket is greater than the width of the circuit breaker handcart, the circuit breaker handcart can pass through the bracket and be placed on the ground.

When a substation is newly built or a switchgear interval is added, when it is necessary to hoist the handcart of the circuit breaker, it is only necessary to perform the above steps in the opposite direction.

When the trolley needs to be moved, the brake device of the universal caster 11 is released first, and then the horizontal frame is increased through the crank handle A51, and finally the trolley is controlled through the handle 10.

When it is necessary to overhaul the chassis of the circuit breaker handcart, after completing the above steps, place the fixing bolts of the circuit breaker handcart chassis in the four corner holes in the lower part of the chassis, and then operate the button 13 through the hydraulic pump. Just lock the hydraulic pump.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. Protection scope, within the spirit and principles of the present invention, any modification, equivalent replacement, improvement, etc., shall be included in the protection scope of the present invention.

Claims (10)

1. Liftable type station trolley, which is characterized in that including horizontal frame, vertical door frame, the horizontal frame Shape is a rectangle frame with opening, and the lower end at four angles of the horizontal frame is mounted on universal caster wheel (11), described Vertical door frame is vertically installed at horizontal frame upper end, and the inside of the vertical door frame is equipped with rectangular channel；Have on the vertical door frame Two crossbeams that are horizontally disposed and being mutually parallel, two crossbeams are vertical with vertical door frame just have been connect, described two Crossbeam is slidably connected a lateral bracket in the horizontal direction, and described two lateral brackets are all connected with that there are one vertical tray, institutes State that two vertical trays are respectively positioned on the top of horizontal frame and all in same level, each vertical tray upper end is respectively provided with There are a handcart guide rail (2), 2 handcart guide rails (2) to be mutually parallel；Further include hydraulic lifting system, the hydraulic lifting System includes that arm, pulley (4), gear (6), chain (7), hydraulic pump (8) and hydraulic lifting post, the shape of the arm are Ladder-shaped frame, respectively one group of pulley (4) of installation, the setting of upper bottom are there are two suspension hook (1) for the bottom both ends of the ladder-shaped frame, and the pulley (4) it is arranged in the rectangular channel of the inside of vertical door frame, the hydraulic pump (8) and hydraulic lifting post are installed in horizontal frame On, the hydraulic pump (8) give hydraulic lifting post provide power, the lifting column of the hydraulic lifting post straight up, the lifting column Top is equipped with gear (6), and described chain (7) one end is connected to the fixing end of hydraulic lifting post, and the other end bypasses gear (6) simultaneously It is connected on the bottom of the ladder-shaped frame after being engaged with gear (6).

2. Liftable type station trolley according to claim 1, it is characterised in that：The universal caster wheel (11) is equal With brake gear.

3. Liftable type station trolley according to claim 1, it is characterised in that：The horizontal frame is by one Main steel frame and two secondary steelframes are constituted, and the main steel frame is horizontal positioned, and described two secondary steelframes are respectively perpendicular and are just connected on main steel frame Both ends, and two secondary steelframes are mutually parallel in same level；Described two secondary steelframes are retractable structure, and Retractable structure inner horizontal direction is provided with lead screw, and crank A (51) is provided on the lead screw.

4. Liftable type station trolley according to claim 1, it is characterised in that：It is all provided in the lateral bracket It is equipped with lead screw, crank B (52) is provided on the lead screw.

5. Liftable type station trolley according to claim 1, it is characterised in that：2 handcart guide rails (2) It is connect with vertical tray by 4 screw lift structures (9), is set between every handcart guide rail (2) and corresponding vertical tray 2 screw lift structures (9) are set, 4 screw lift structures (9) are both connected on crank C (53).

6. Liftable type station trolley according to claim 1, it is characterised in that：2 handcart guide rails (2) Inside is both provided with limit hole (31).

7. Liftable type station trolley according to claim 1, it is characterised in that：It is arranged on the vertical tray There is limiting device (3), which is connected to the other end of vertical tray.

8. Liftable type station trolley according to claim 1, it is characterised in that：The handcart guide rail (2) Upper surface is provided with pressure sensor apparatus (12), and the pressure sensor apparatus (12) is for detecting handcart guide rail (2) upper table The numerical value of placed object rival car guide rail (2) pressure in face.

9. Liftable type station trolley according to claim 1, it is characterised in that：Every group of pulley (4) is extremely It is provided with 2 less.

10. Liftable type station trolley according to claim 1, it is characterised in that：On the vertical door frame also It is provided with the operation button (13) of handle (10) and hydraulic pump (8).