CN108557698B - Lifting trolley for overhauling transformer substation - Google Patents

Lifting trolley for overhauling transformer substation Download PDF

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Publication number
CN108557698B
CN108557698B CN201810737799.0A CN201810737799A CN108557698B CN 108557698 B CN108557698 B CN 108557698B CN 201810737799 A CN201810737799 A CN 201810737799A CN 108557698 B CN108557698 B CN 108557698B
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CN
China
Prior art keywords
trolley
handcart
lifting
hydraulic
guide rail
Prior art date
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Active
Application number
CN201810737799.0A
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Chinese (zh)
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CN108557698A (en
Inventor
任旭东
邹翔
何文兵
徐强
李彬
张康
张伟
练尧
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State Grid Sichuan Electric Power Co Ganzi Power Supply Co
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State Grid Sichuan Electric Power Co Ganzi Power Supply Co
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Application filed by State Grid Sichuan Electric Power Co Ganzi Power Supply Co filed Critical State Grid Sichuan Electric Power Co Ganzi Power Supply Co
Priority to CN201810737799.0A priority Critical patent/CN108557698B/en
Publication of CN108557698A publication Critical patent/CN108557698A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/061Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks characterised by having a lifting jib
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075Constructional features or details
    • B66F9/07509Braking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075Constructional features or details
    • B66F9/07513Details concerning the chassis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075Constructional features or details
    • B66F9/12Platforms; Forks; Other load supporting or gripping members
    • B66F9/14Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075Constructional features or details
    • B66F9/20Means for actuating or controlling masts, platforms, or forks
    • B66F9/22Hydraulic devices or systems
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B3/00Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Handcart (AREA)

Abstract

The application discloses a liftable trolley for transformer substation maintenance, which consists of a horizontal frame, a vertical portal, a trolley guide rail, an adjusting mechanism for adjusting the height and width of the trolley guide rail, a hydraulic mechanism for lifting a breaker trolley, a handle and the like, wherein the hydraulic mechanism is composed of a suspension arm, pulleys, gears, a chain, a hydraulic pump and a hydraulic lifting column, the breaker trolley is firstly moved below the suspension arm through the trolley guide rail, the trolley guide rail can be properly adjusted according to the width of the breaker trolley, then the breaker trolley is hung through a lifting hook on the suspension arm, a hydraulic pump is started to provide power for the hydraulic lifting column, the lifting column of the hydraulic lifting column is lifted upwards to drive the gear at the top end of the lifting column to move upwards, one end of the chain is fixed at the fixed end of the hydraulic lifting column, the other end of the chain is bypassed to start to shrink upwards and drive the suspension arm to move upwards, and finally the breaker trolley is driven to move upwards to complete lifting action, and the descending operation is vice versa.

Description

Lifting trolley for overhauling transformer substation
Technical Field
The application relates to transformer substation overhaul, in particular to a liftable trolley for transformer substation overhaul.
Background
With the gradual popularization of comprehensive automatic and intelligent substations, the transformer substation commonly adopts a centrally-mounted switch device, and an original switch maintenance trolley is used as an important tool for the operation to maintenance of the centrally-mounted switch device, so that the functional stability is poor, the maintenance efficiency is greatly influenced, and the potential safety hazard exists. The main components of the existing maintenance trolley are wheels, rectangular frames, height adjusting wheels and maintenance platforms.
The circuit breaker handcart chassis is fixed in under the circuit breaker mechanism, when meetting circuit breaker handcart chassis mechanical structure jam and the problem in the aspect of electric loop trouble in the daily maintenance work, current maintenance dolly can not satisfy the maintenance condition. In the moving process of the existing maintenance trolley and the breaker handcart, the contact surface has the possibility of friction and collision, so that the outer insulating paint of the existing maintenance trolley and the breaker handcart is damaged and deformed. Because the existing transformer substation switch cabinet is divided into a main transformer cabinet, a circuit cabinet and a PT cabinet, the sizes of the transformer substation switch cabinet are different from each other, in order to meet the daily operation, maintenance and repair requirements, at least 2 or more maintenance trolleys are required to be configured for various cabinet bodies, 8-10 maintenance trolleys are required to be configured for each 220kV or 110kV transformer substation according to investigation, the investment is large, and a large amount of production sites are occupied. When newly-built or switch cabinet interval of transformer substation increases newly, need to lean on the manpower to lift the circuit breaker handcart to original maintenance dolly, then push into in the switch cabinet again, a circuit breaker handcart weight is around 100kg, need the manpower to carry to 800mm high maintenance dolly on, has the possibility of toppling, endangers personal equipment safety.
Disclosure of Invention
The lifting trolley for transformer substation maintenance is provided for solving the problems that the existing maintenance trolley cannot maintain the chassis of the circuit breaker, and the existing maintenance trolley is time-consuming and labor-consuming, not only can the maintenance be ordered, safe, time-saving and labor-saving by matching all parts, but also the stability can be improved by the telescopic function of the horizontal frame, and the chassis of the circuit breaker is convenient to maintain.
The application is realized by the following technical scheme:
the lifting trolley for overhauling the transformer substation comprises a horizontal frame and a vertical portal, wherein the horizontal frame is in the shape of a rectangular frame with an opening, universal casters are arranged at the lower ends of four corners of the horizontal frame, the vertical portal is vertically arranged at the upper end of the horizontal frame, and a rectangular groove is formed in the inner side of the vertical portal; the two transverse brackets are connected with a vertical bracket in a sliding manner along the horizontal direction, the two vertical brackets are positioned above the horizontal frame and are positioned on the same horizontal plane, a handcart guide rail is arranged at the upper end of each vertical bracket, and the 2 handcart guide rails are parallel to each other; still include hydraulic lifting system, hydraulic lifting system includes davit, pulley, gear, chain, hydraulic pump and hydraulic lifting post, the shape of davit is trapezoidal frame, and a set of pulley is respectively installed at the bottom both ends of this trapezoidal frame, the upper end is provided with two lifting hooks, and this pulley sets up in the inboard rectangular channel of perpendicular portal, hydraulic pump and hydraulic lifting post are all installed on horizontal frame, the hydraulic pump provides power for hydraulic lifting post, the lifting post of hydraulic lifting post is vertical upwards, and the gear is installed at this lifting post top, the stiff end at hydraulic lifting post is connected to chain one end, and the other end is walked around the gear and is connected with the gear meshing back on the bottom of trapezoidal frame. The lifting trolley for overhauling the transformer substation mainly comprises a horizontal frame, a vertical portal, a trolley guide rail and a hydraulic mechanism for lifting a circuit breaker trolley; the hydraulic mechanism is composed of a suspension arm, pulleys, gears, a chain, a hydraulic pump and a hydraulic lifting column, the circuit breaker handcart is moved to the lower portion of the suspension arm through a handcart guide rail, the handcart guide rail can be properly adjusted according to the width of the circuit breaker handcart, then the circuit breaker handcart is hung on a lifting hole of the circuit breaker handcart through a lifting hook on the suspension arm, the hydraulic pump is started to provide power for the hydraulic lifting column, the lifting column of the hydraulic lifting column is lifted upwards to drive the gears at the top end of the lifting column to move upwards, the chain is fixed at the fixed end of the hydraulic lifting column at one end, the other end of the chain is wound around to start to shrink upwards to drive the suspension arm to move upwards, the circuit breaker handcart is finally driven to move upwards, lifting actions are completed, and descending operations are reverse.
Optionally, the universal castor all has brake equipment, avoids appearing the condition of swift current car in the operation in-process.
Further, the horizontal frame is composed of a main steel frame and two auxiliary steel frames, the main steel frame is horizontally arranged, the two auxiliary steel frames are respectively and vertically connected to two ends of the main steel frame, and the two auxiliary steel frames are parallel to each other in the same horizontal plane; the two auxiliary steel frames are of telescopic structures, a screw rod is arranged in the horizontal direction inside the telescopic structures, a crank A is arranged on the screw rod, the rectangular frame structure is stretched through the telescopic structures to improve the stability of the horizontal frame, the telescopic structures control the telescopic operation through the screw rod arranged inside the telescopic structures, and the crank A is used for controlling the screw rod.
Further, all be provided with the lead screw in the horizontal bracket, be provided with crank B on the lead screw, crank B is used for controlling the lead screw in the horizontal bracket and accomplishes horizontal bracket's left and right movement.
Further, 2 handcart guide rails are connected with the vertical brackets through 4 lead screw lifting mechanisms, 2 lead screw lifting mechanisms are arranged between each handcart guide rail and the corresponding vertical bracket, the 4 lead screw lifting mechanisms are connected to a crank C, and the crank C is used for controlling lifting actions of the 4 lead screw lifting mechanisms simultaneously.
Furthermore, limiting holes are formed in the inner sides of the 2 handcart guide rails.
Further, a limiting device is arranged on the vertical bracket and is connected to the other end of the vertical bracket.
Further, the upper surface of the handcart guide rail is provided with a pressure sensor device, and the pressure sensor device is used for detecting the numerical value of the pressure of an object placed on the upper surface of the handcart guide rail on the handcart guide rail.
Optionally, at least 2 pulleys are provided for each set.
Further, a handle and an operation button of the hydraulic pump are further arranged on the vertical portal frame.
Compared with the prior art, the application has the following advantages and beneficial effects:
1. the lifting type maintenance trolley adopts a hollow design, so that the dilemma that the chassis of the handcart of the circuit breaker cannot be overhauled in daily maintenance work is effectively solved; the device solves the problems that the contact surface has friction and collision possibility in the moving process of the existing maintenance trolley and the breaker handcart, and the outer insulating paint of the maintenance trolley and the breaker handcart is damaged and deformed.
2. The lifting type maintenance trolley has the excellent characteristic that the width of the maintenance platform can be freely adjusted, so that the configuration quantity of the existing transformer substation maintenance trolley can be greatly reduced. Taking 110kV transformer substations as an example, 2 PT cabinets, 2 large-current cabinets and 2-3 outgoing line cabinets are adopted, if lifting type maintenance trolleys are adopted, the daily maintenance and maintenance requirements can be met only by only needing to be equipped with 2-3 outgoing line cabinets, so that the production cost is saved, and the occupied area is reduced.
3. The lifting type maintenance trolley can achieve the function of directly lifting the breaker trolley from the ground to the breaker chamber of the switch cabinet, so that the trouble that the breaker trolley needs to be lifted to the original maintenance trolley by manpower when a transformer substation is newly built or the interval of the switch cabinet is newly increased is avoided, time and labor are saved, and the safety risk possibly generated in the manual carrying process can be avoided.
4. The safety risk brought by cross operation among groups during overhauling the switch cabinet and the circuit breaker handcart by an overhauling personnel and experiments is effectively avoided. In the actual operation process, a switch cabinet interval requires relay protection personnel to perform signal point-to-point, protection and debugging, whole group transmission and the like, substation maintenance personnel routinely check, high-voltage experiment personnel mechanical property tests, loop resistance, insulation resistance, high-voltage tests and the like, and in the operation process, each group inevitably involves cross operation, and the cross operation is taken as a higher dangerous point, so that an effective solution is not available. In daily work, the lifting type maintenance trolley can take out all the breaker trolleys in the switch cabinets and uniformly place the breaker trolleys at fixed positions to serve as independent high-voltage test maintenance sites, operators are separated through the method, cross operation is effectively avoided, and maintenance efficiency is greatly improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:
FIG. 1 is a schematic elevational view of the present application;
FIG. 2 is a left-hand structural schematic diagram of the present application;
fig. 3 is a schematic top view of the handcart rail, vertical bracket and screw lifting mechanism.
Name of the reference and corresponding parts in the drawings:
1-lifting hook, 2-handcart guide rail, 3-stop device, 3-1-spacing hole, 4-pulley, 5-1-crank A, 5-2-crank B, 5-3-crank C, 6-gear, 7-chain, 8-hydraulic pump, 9-lead screw elevating system, 10-handle, 11-universal castor, 12-pressure sensor device, 13-operating button.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present application, the present application will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present application and the descriptions thereof are for illustrating the present application only and are not to be construed as limiting the present application.
Example 1
As shown in fig. 1 and 2, a liftable trolley for overhauling a transformer substation comprises a horizontal frame and a vertical portal, wherein the horizontal frame is in the shape of a rectangular frame with an opening, universal casters 11 are arranged at the lower ends of four corners of the horizontal frame, the vertical portal is vertically arranged at the upper end of the horizontal frame, and a rectangular groove is formed in the inner side of the vertical portal; the two transverse brackets are connected with a vertical bracket in a sliding manner along the horizontal direction, the two vertical brackets are positioned above the horizontal frame and are positioned on the same horizontal plane, and a handcart guide rail 2 and 2 handcart guide rails 2 are arranged at the upper ends of the vertical brackets and are parallel to each other; still include hydraulic lifting system, hydraulic lifting system includes davit, pulley 4, gear 6, chain 7, hydraulic pump 8 and hydraulic lifting column, the shape of davit is trapezoidal frame, and a set of pulley 4 of this trapezoidal frame's lower bottom both ends respectively installs, goes up the end and is provided with two lifting hooks 1, and this pulley 4 sets up in the inboard rectangular channel of perpendicular portal, hydraulic pump 8 and hydraulic lifting column are all installed on horizontal frame, hydraulic pump 8 provides power for hydraulic lifting column, hydraulic lifting column's lifting column is vertically upwards, and gear 6 is installed to this lifting column top, the stiff end at hydraulic lifting column is connected to chain 7 one end, and the other end is walked around gear 6 and is connected with the meshing of gear 6 on trapezoidal frame's lower bottom. The lifting trolley for overhauling the transformer substation mainly comprises a horizontal frame, a vertical portal, a trolley guide rail and a hydraulic mechanism for lifting a circuit breaker trolley; the hydraulic mechanism is composed of a suspension arm, a pulley 4, a gear 6, a chain 7, a hydraulic pump 8 and a hydraulic lifting column, the circuit breaker handcart is moved to the lower portion of the suspension arm through a handcart guide rail 2, the handcart guide rail 2 can be properly adjusted according to the width of the circuit breaker handcart, then the hydraulic pump 8 is started to provide power for the hydraulic lifting column through a lifting hook 1 on the suspension arm, the lifting column of the hydraulic lifting column is lifted upwards to drive the gear 6 at the top end of the lifting column to move upwards, one end of the chain 7 is fixed at the fixed end of the hydraulic lifting column, the other end of the chain 7 is wound around the gear 6 to start to shrink upwards and drive the suspension arm to move upwards, and finally the circuit breaker handcart is driven to move upwards to complete lifting action, and the lowering operation is reverse.
The universal casters 11 are all provided with brake devices, so that the situation of sliding in the operation process is avoided.
The horizontal frame consists of a main steel frame and two auxiliary steel frames, the main steel frame is horizontally arranged, the two auxiliary steel frames are respectively and vertically connected to the two ends of the main steel frame, and the two auxiliary steel frames are parallel to each other in the same horizontal plane; the two auxiliary steel frames are of telescopic structures, a screw rod is arranged in the horizontal direction inside the telescopic structures, a crank A5-1 is arranged on the screw rod, the rectangular frame structure is stretched through the telescopic structures to improve the stability of the horizontal frame, the telescopic structures control stretching through the screw rod arranged inside the telescopic structures, and the crank A5-1 is used for controlling the screw rod.
The screw rods are arranged in the transverse brackets, the crank handles B5-2 are arranged on the screw rods, and the crank handles B5-2 are used for controlling the screw rods in the transverse brackets to complete left-right movement of the transverse brackets.
Limiting holes 3-1 are formed in the inner sides of the 2 handcart guide rails 2.
At least 2 pulleys 4 are provided per set.
The vertical portal 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 of the prior art.
Example 2
As shown in fig. 2 and 3, fig. 3 only illustrates one handcart rail 2, a vertical bracket and 2 screw rod lifting mechanisms 9,2 handcart rails 2 are connected with the vertical bracket through 4 screw rod lifting mechanisms 9,2 screw rod lifting mechanisms 9 are arranged between each handcart rail 2 and the corresponding vertical bracket, the 4 screw rod lifting mechanisms 9 are connected to a crank C5-3, and the crank C5-3 is used for controlling lifting actions of the 4 screw rod lifting mechanisms 9 simultaneously.
And the vertical bracket is provided with a limiting device 3, and the limiting device 3 is connected to the other end of the vertical bracket.
The upper surface of the handcart rail 2 is provided with a pressure sensor device 12, the pressure sensor device 12 is used for detecting the pressure value of an object placed on the upper surface of the handcart rail 2 on the handcart rail 2, and the pressure sensor device 12 is in the prior art.
Example 3
As shown in fig. 1, 2 and 3, the operation flow of the lifting trolley for overhauling the transformer substation is as follows: the trolley is controlled by the handle 10, the vertical bracket and the circuit breaker trolley are the same in width by adjusting the crank B5-2 before reaching the appointed switch cabinet, and the trolley is continuously controlled, so that the limiting device 3 is just inserted into the limiting hole of the switch cabinet; the trolley is locked through the brake device of the universal castor 11, the condition of sliding the trolley in the following operation process is avoided, then the trolley guide rail 2 is equal to the circuit breaker trolley in height through adjusting the crank C5-3, then the circuit breaker trolley is pulled onto the trolley guide rail 2, the limit device of the circuit breaker is guaranteed to fall into the limit hole 3-1 on the trolley guide rail 2, the lifting hook 1 is hooked in the lifting hole of the circuit breaker trolley in the next step, the circuit breaker trolley is lifted through the operation button 13 of the hydraulic pump 8 until the pressure sensor device 12 detects no pressure, and then the crank B5-2 is adjusted until the width of the transverse bracket is larger than that of the circuit breaker trolley, so that the circuit breaker trolley can pass through the transverse bracket and be placed on the ground.
When a circuit breaker handcart is needed to be hoisted when a new transformer substation or a new switch cabinet interval is increased, the steps are only needed to be reversely operated once.
When the trolley needs to be moved, the brake device of the universal castor 11 is firstly released, then the horizontal frame is lengthened through the crank A5-1, and finally the trolley is controlled through the handle 10.
When the chassis of the circuit breaker handcart is required to be overhauled, the fixing bolts of the chassis of the circuit breaker handcart are arranged in four corner holes at the lower part of the chassis after the steps are finished, and the hydraulic pump is locked through the hydraulic pump operating button 13.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the application, and is not meant to limit the scope of the application, but to limit the application to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the application are intended to be included within the scope of the application.

Claims (6)

1. The lifting trolley for overhauling the transformer substation is characterized by comprising a horizontal frame and a vertical portal, wherein the horizontal frame is in the shape of a rectangular frame with an opening, universal casters (11) are arranged at the lower ends of four corners of the horizontal frame, the vertical portal is vertically arranged at the upper end of the horizontal frame, and a rectangular groove is formed in the inner side of the vertical portal; the two transverse frames are vertically and rigidly connected with the vertical portal, the two transverse frames are horizontally and slidably connected with a transverse bracket, the two transverse brackets are connected with a vertical bracket, the two vertical brackets are positioned above the horizontal frame and are on the same horizontal plane, a handcart guide rail (2) is arranged at the upper end of each vertical bracket, and the 2 handcart guide rails (2) are mutually parallel; the hydraulic lifting system comprises a suspension arm, pulleys (4), gears (6), a chain (7), a hydraulic pump (8) and a hydraulic lifting column, wherein the suspension arm is in a trapezoid frame, a group of pulleys (4) are respectively arranged at two ends of the lower bottom of the trapezoid frame, two lifting hooks (1) are arranged at the upper bottom of the trapezoid frame, the pulleys (4) are arranged in rectangular grooves on the inner side of a vertical portal, the hydraulic pump (8) and the hydraulic lifting column are both arranged on a horizontal frame, the hydraulic pump (8) provides power for the hydraulic lifting column, the lifting column of the hydraulic lifting column is vertically upwards, the top end of the lifting column is provided with the gears (6), one end of the chain (7) is connected to the fixed end of the hydraulic lifting column, and the other end of the chain bypasses the gears (6) and is meshed with the gears (6) to be connected to the lower bottom of the trapezoid frame;
screw rods are arranged in the transverse brackets, and a crank B (5-2) is arranged on each screw rod;
2 handcart guide rails (2) are connected with the vertical brackets through 4 screw rod lifting mechanisms (9), 2 screw rod lifting mechanisms (9) are arranged between each handcart guide rail (2) and the corresponding vertical bracket, and the 4 screw rod lifting mechanisms (9) are connected to a crank C (5-3);
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 for detecting the value of the pressure of an object placed on the upper surface of the handcart guide rail (2) on the handcart guide rail (2);
the using operation flow is as follows:
the trolley is controlled, and the vertical bracket and the circuit breaker trolley are the same in width through the adjusting crank B (5-2) before reaching the appointed switch cabinet;
continuously controlling the trolley to enable the limiting device (3) to be inserted into the limiting hole of the switch cabinet;
the handcart guide rail (2) is equal to the circuit breaker handcart in height through the adjusting crank C (5-3), and then the circuit breaker handcart is pulled onto the handcart guide rail (2);
the lifting hook (1) is hooked in a lifting hole of the circuit breaker handcart, and the circuit breaker handcart is lifted by the hydraulic pump (8) until no pressure is detected by the pressure sensor device (12);
the crank B (5-2) is adjusted until the width of the transverse bracket is larger than that of the circuit breaker handcart, so that the circuit breaker handcart can pass through the transverse bracket and be placed on the ground.
2. The liftable trolley for overhauling a substation according to claim 1, characterized in that: the universal casters (11) are provided with brake devices.
3. The liftable trolley for overhauling a substation according to claim 1, characterized in that: the horizontal frame consists of a main steel frame and two auxiliary steel frames, the main steel frame is horizontally arranged, the two auxiliary steel frames are respectively and vertically connected to the two ends of the main steel frame, and the two auxiliary steel frames are parallel to each other in the same horizontal plane; the two auxiliary steel frames are of telescopic structures, a screw rod is arranged in the horizontal direction inside the telescopic structures, and a crank A (5-1) is arranged on the screw rod.
4. The liftable trolley for overhauling a substation according to claim 1, characterized in that: limiting holes (3-1) are formed in the inner sides of the 2 handcart guide rails (2).
5. The liftable trolley for overhauling a substation according to claim 1, characterized in that: at least 2 pulleys (4) are arranged in each group.
6. The liftable trolley for overhauling a substation according to claim 1, characterized in that: the vertical portal is also provided with a handle (10) and an operation button (13) of the hydraulic pump (8).
CN201810737799.0A 2018-07-06 2018-07-06 Lifting trolley for overhauling transformer substation Active CN108557698B (en)

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