CN107681518A - Transformer changes auxiliary equipment - Google Patents

Abstract

A kind of transformer changes auxiliary equipment, including frame, cable wire static side fixing point, motor, cable wire moved end fixing point, assembly pulley, cable wire, current transformer bracket and frame fixture；Cable wire static side fixing point, motor and cable wire moved end fixing point are located at the top of frame, current transformer bracket using when be inserted in the bottom of current transformer, the upper end of assembly pulley is connected with cable wire moved end fixing point；One end of cable wire is connected with cable wire static side fixing point, and the other end of cable wire is connected by assembly pulley with motor, and current transformer bracket support is on cable wire.

Description

Transformer Replacement Auxiliary Equipment

technical field

The invention relates to a technology for replacing current transformers in switch cabinets, in particular to auxiliary equipment for replacing current transformers in switch cabinets.

Background technique

The current transformer in the 10kV switch cabinet often needs to be replaced with a current transformer with a larger transformation ratio due to the increase in line capacity. This work is a heavy physical labor. When replacing the current transformer, an operator is often required to , Another operator is outside the cabinet, not only has to dismantle the screws, but also supports the current transformer, so it is very laborious and time-consuming, and the operator is in danger of being injured.

Application number 201320018991.7, authorized announcement number CN 203103810 U, a utility model patent named "Current Transformer Replacement Platform" discloses a current transformer replacement platform: "It is used to support the current transformer when replacing the current transformer in the switch cabinet. Transformer, the current transformer replacement platform includes a base, a jack set in the base, a lifting device connected to the jack and driven by the jack to move in the vertical direction; the lifting device includes a lifting device that can move in the horizontal direction The upper telescopic arm, the tray arranged on the end of the telescopic arm away from the base, the telescopic driving mechanism that drives the telescopic arm, and the balance mechanism that is connected with the telescopic arm and keeps the lifting device in balance." Problems Yes: When in use, the bottom of the current transformer is required to have a considerable distance from the ground, so that the jack can be plugged into the bottom of the current transformer to achieve lifting. At the same time, the balance mechanism also needs a large space, so the applicability is not wide, and it is not used. Convenience.

Application number: 201621007900.X, authorized announcement number CN 206041287 U titled "A new type of switch cabinet current transformer replacement platform" discloses another current transformer replacement platform: "Including a base, the lower end of the base is provided with a walking mechanism, the base Two supporting bases are arranged on the base, the hydraulic jack is hinged on the base, the jack rod of the hydraulic jack is hinged on the base, one end of the supporting rod is hinged on the supporting base, the other end of the supporting rod is hinged on the base, and a supporting platform is set on the base, and the supporting platform is connected to the An open flower orchid is arranged between the supporting seats, a fixed block is arranged at one end of the supporting platform, a nut is arranged on the fixed block, and an adjusting screw is threaded on the nut, two rectangular bumps are arranged on the supporting platform along the length direction, and two rectangular bumps are arranged on the supporting platform. Evenly arrange several universal balls, install a support plate horizontally between two rectangular protrusions, install fixing bolts in the through holes, the fixing bolts can slide in the rectangular through grooves, and vertically set up vertical stops on the side of the support plate close to the fixed block board.” The use of this device can reduce the difficulty of replacing the current transformer, reduce the labor intensity of the staff, and improve work efficiency. But like the previous patented technology, it also requires a considerable distance from the bottom of the current transformer to the ground, so that the hydraulic jack can be used. Therefore, there are also relatively large restrictions on the installation position of the original current transformer, and there are also applicable Not wide, use inconvenient problem.

Contents of the invention

The main purpose of the invention is to develop an auxiliary tool that can assist in the replacement of current transformers, thereby ensuring the safety of workers, reducing labor intensity, improving the efficiency of replacing current transformers, and reducing power outage time.

The technical solution used in the present invention is: an auxiliary equipment for transformer replacement, including a frame, a fixed point at the static end of a steel cable, a motor, a fixed point at a moving end of a steel cable, a pulley block, a steel cable, a bracket for a current transformer, a frame fixing piece and The pulley assembly; the fixed point of the static end of the steel cable, the fixed point of the motor and the moving end of the steel cable are all set on the top of the frame; there are two current transformer brackets, which are inserted at the front and rear positions of the bottom of the current transformer when in use, two The left and right ends of the current transformer bracket are each provided with a pulley assembly, and there are two pairs of corresponding pulley blocks, fixed points at the static end of the steel cable, fixed points at the moving end of the steel cable and two pairs of steel cables; the pulley assembly includes a pulley shaft and Two pulleys, the front and rear ends of each pulley shaft are respectively connected with the corresponding current transformer brackets, and each pulley shaft is equipped with a pulley at the front and rear ends; the upper end of the pulley block is connected with the corresponding fixed point of the moving end of the steel cable; One end of the cable is connected to the fixed point of the corresponding static end of the cable, and the other end of the cable passes through a pulley in a corresponding pulley assembly located at the left and right ends of the current transformer bracket, and then passes through the corresponding pulley block and The motor is connected.

When the motor is started, the cable will lift the pulley, the pulley will lift the current transformer bracket, and finally the current transformer bracket will lift the current transformer. After the current transformer rises to a certain height, use the corresponding control system The current transformer is locked at this height, and then the dismantled current transformer can be transferred away by manpower, transfer trolley, or manpower and transfer trolley cooperation. The invention has little requirement on the operating space for disassembling the current transformer, and has the advantages of convenient use and wide applicability.

Preferably, there are two motors, the two motors are respectively connected to a corresponding steel cable, and the two motors are kept working synchronously through the control device. This optimal scheme has high operating efficiency.

As a preference, it also includes a steel cable retractable rod, and the motor is one; the steel cable retractable rod is driven by a motor, and the other ends of the two steel cables are correspondingly connected to the same steel cable retractable rod . Here, the retracting stick includes a central shaft, and steel cable retracting discs installed at both ends of the central shaft, and the motor drives the central shaft through a transmission mechanism. This preferred solution has simple structure, low manufacturing cost and convenient installation and use.

Preferably, both the fixed point at the static end of the steel cable and the fixed point at the dynamic end of the steel cable are formed by a fixing piece fixed on the top of the frame, and the fixing piece includes a fixing seat, a fixing bolt and a nut. This optimal scheme is convenient for the connection of the steel cable and the fixed point of the static end of the steel cable and the connection of the upper end of the pulley block and the fixed point of the moving end of the steel cable.

Preferably, it also includes a motor fixing frame, the fixing position of the motor fixing frame on the top of the frame is adjustable, and the motor is fixed on the motor fixing frame. This preferred solution facilitates the installation and adjustment of the motor.

Preferably, it also includes a high-low position sensing bar of the current transformer, and the high-low position sensing bar of the current transformer is fixedly connected with the side wall of the frame on one side of the pulley block. Here, the side walls of the frame include the left, right, upper and lower side walls constituting the frame. When the high and low position sensing bar of the current transformer detects that the current transformer has risen to the set height, the motor will immediately stop running the corresponding work of lifting the current transformer, and lock the current transformer at the corresponding height for convenience and convenience. Safely divert the operation of current transformers. This preferred solution is convenient for mastering and controlling the rising height of the current transformer and safely transferring the current transformer.

To sum up, the beneficial effects of the present invention are: the operation space requirement for disassembling the current transformer is not large, and it has the advantages of convenient use and wide applicability.

Description of drawings

Fig. 1: structural representation of the present invention;

In the figure: frame 1, fixed point of steel cable static end 2, fixed part 2.1, motor 3, motor fixed frame 3.1, fixed point of steel cable moving end 4, fixed part 4.1, pulley block 5, steel cable 6, current transformer bracket 7. Frame fixing part 8, pulley assembly 9, pulley 9.1, pulley shaft 9.2, current transformer high and low position sensing strip 10.

detailed description

The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Embodiment one:

As shown in Figure 1, the present invention comprises frame 1, fixed point 2 of static end of steel cable, motor 3, fixed point 4 of moving end of steel cable, pulley block 5, steel cable 6, current transformer bracket 7, frame fixing part 8 and The pulley assembly 9; the fixed point 2 of the static end of the steel cable, the motor 3 and the fixed point 4 of the moving end of the steel cable are all arranged on the top of the frame 1; there are two current transformer brackets 7, which are inserted at the bottom of the current transformer when in use The front and rear positions of the two current transformer brackets 7 are respectively provided with a pulley assembly 9 at the left and right ends, and the corresponding pulley block 5, the fixed point 2 of the static end of the steel cable, the fixed point 4 of the moving end of the steel cable and the steel cable 6 are also respectively There are two pairs; the pulley assembly 9 includes a pulley shaft 9.2 and two pulleys 9.1, the front and rear ends of each pulley shaft 9.2 are respectively connected to the corresponding current transformer bracket 7, and the front and rear ends of each pulley shaft 9.2 are respectively provided with A pulley 9.1; the upper end of the pulley block 5 is connected to the corresponding fixed point 4 of the moving end of the cable; one end of the cable is connected to the fixed point 2 of the corresponding static end of the cable, and the other end of the cable passes through the corresponding pulley 9.1 and then passes through the corresponding pulley block 5 is connected with motor 3. During work, cable lifts pulley 9.1, and pulley 9.1 lifts current transformer bracket 7 by pulley shaft 9.2 again, thereby lifts the current transformer supported on the current transformer bracket 7.

There are four frame fixing parts 8 in total, and the four frame fixing parts 8 are respectively arranged on the left and right sides of the frame 1 .

Preferably, there are two motors 3, and the two motors 3 are respectively connected to a corresponding steel cable 6, and the two motors 3 are kept working synchronously through a control device not shown in detail in the figure. In addition, the fixed point 2 at the static end of the steel cable and the fixed point 4 at the moving end of the steel cable are both composed of fixing parts 2.1 and 4.1 fixed on the top of the frame 1, and the two motors 3 are installed on the same motor fixing frame 3.1, and the motors are fixed The fixing position of the frame 3.1 on the top of the frame 1 is adjustable, and the position of the motor 3 fixed on the motor fixing frame 3.1 is also adjustable. It also includes a high and low position sensing bar 9 of the current transformer, and the high and low position sensing bar 9 of the current transformer is fixed on the side wall of the frame on one side of the pulley block 5 .

Embodiment two:

The difference between Example 2 and Embodiment 1 is mainly that it includes a steel cable retractable stick, and the motor 3 is one; the steel cable retractable stick is driven by the motor 3 through a transmission mechanism not shown in the figure, The other ends of the steel cables of the two replacement working groups are all connected with the same steel cable retracting stick. Here, the retractable stick includes a central shaft and cable retractable disks installed at both ends of the central shaft, and the steel cables are connected to the steel cable retractable rods through corresponding steel cable retractable disks.

The specific embodiments described above are only preferred implementation modes of the present invention, and are not intended to limit the specific implementation structure and implementation scope of the present invention. In fact, some equivalent changes can also be made according to the shape, structure and design purpose of the present invention. Therefore, all equivalent changes made according to the shape, structure and design purpose of the present invention should be included in the protection scope of the present invention, that is, these equivalent changes should be protected by the present invention.

Claims (7)

1. An auxiliary equipment for transformer replacement, which is characterized in that it includes a frame (1), a fixed point at the static end of the steel cable (2), a motor (3), a fixed point at the moving end of the steel cable (4), a pulley block (5), Steel cable (6), current transformer bracket (7), frame fixing piece (8) and pulley assembly (9); fixed point of fixed end of steel cable (2), motor (3) and fixed point of moving end of steel cable ( 4) Both are located on the top of the frame (1); there are two current transformer brackets (7), which are inserted at the front and rear positions of the bottom of the current transformer when in use, and the left and right sides of the two current transformer brackets (7) A pulley assembly (9) is provided at both ends, and there are two pairs of corresponding pulley block (5), fixed point at the static end of the cable (2), fixed point at the moving end of the cable (4) and two pairs of cables (6); The pulley assembly (9) includes a pulley shaft (9.2) and two pulleys (9.1), the front and rear ends of each pulley shaft (9.2) are respectively connected with the corresponding current transformer bracket (7), and each pulley shaft ( 9.2) is provided with a pulley (9.1) at the front and rear ends; the upper end of the pulley block (5) is connected to the corresponding fixed point (4) at the moving end of the cable; one end of the cable is connected to the fixed point (2) at the corresponding static end of the cable, The other end of the steel cable passes through the corresponding pulley (9.1) and then links to each other through the corresponding pulley block (5) and the motor (3). 2. The transformer replacement auxiliary equipment according to claim 1, characterized in that: there are two motors (3), and the two motors (3) are respectively connected to a corresponding steel cable (6), and the two motors (3) are respectively connected to each other. The motor (3) keeps working synchronously through the control device. 3. Auxiliary equipment for transformer replacement according to claim 1, characterized in that: it also includes a steel cable retractable stick, the motor (3) is one; the steel cable retractable stick is controlled by the motor (3 ) drive, and the other ends of the two steel cables are correspondingly connected with the same cable retractable stick. 4. The auxiliary equipment for transformer replacement according to claim 1, characterized in that: there are four frame fixing parts (8) in total, and the four frame fixing parts (8) are respectively arranged on the left and right sides of the frame (1). 5. Auxiliary equipment for transformer replacement according to claim 1, characterized in that: the fixed point (2) at the static end of the steel cable and the fixed point (4) at the moving end of the steel cable are both fixed on the top of the frame (1) by a fixing piece (2.1, 4.1) composition. 6. The auxiliary equipment for transformer replacement according to any one of claims 1-5, characterized in that: it also includes a motor fixing frame (3.1), and the fixing of the motor fixing frame (3.1) on the top of the frame (1) The position is adjustable, and the motor 3) is fixed on the motor fixing frame (3.1). 7. The transformer replacement auxiliary equipment according to any one of claims 1-5, characterized in that: it also includes a current transformer high and low position sensing strip (10), and the current transformer high and low position sensing strip (10) It is fixedly connected with the frame side wall on one side of the pulley block (5).