CN104401900A - Cover plate hoisting device - Google Patents

Abstract

The invention discloses a cover board hoisting device. The boom is guided and assembled on the lifting bracket along the up and down direction, and a vertically inclined swing rod is installed between the top of the boom and the lifting bracket. The upper end of the swing rod is hinged on the top of the boom around the axis extending horizontally. The lower end of the swing rod is hinged on the lifting bracket around the horizontally extending axis through the connecting piece, and the connecting piece guides and moves in the horizontal direction and is assembled on the lifting bracket, and a driving device is installed between the swing rod and the lifting. The boom will drop under the pull of its own gravity and the gravity of the spreader and the cover plate. Therefore, in the present invention, the driving device realizes the lifting of the cover plate through the link mechanism formed by the connecting piece, the swing rod and the hanger rod on the lifting bracket. Lifting, lifting principle and lifting action are simpler.

Description

A cover lifting device

technical field

The invention relates to a cover plate hoisting device.

Background technique

When disassembling and assembling equipment such as 1100kV and other voltage level GIS circuit breakers, isolating switches, grounding switches, and quick grounding switches in the workshop, it is often necessary to disassemble and assemble the cover plate on the equipment. At present, there are two main ways to transport the cover plate in the workshop: 1) use a large crane to lift the cover plate to the appropriate position; 2) first use a large crane to lift the cover plate to the transport trolley, and then move the transport trolley to After a certain position, use another large crane to remove the cover plate, and then hoist it to an appropriate position. The traditional installation method of the cover plate is to use a large crane (or forklift) to lift the cover plate to an appropriate position, and then one person (or more than one person) moves the cover plate to the installation position and positions it, and another person installs the connecting bolts. The installation of the cover plate is realized; the removal process of the cover plate is opposite to the above process. Such a cover plate installation/removal method is not only time-consuming and laborious, but also has potential safety hazards such as crushing injuries and finger injuries during the assembly process.

Contents of the invention

The object of the present invention is to provide a cover plate hoisting device, aiming to solve the problem of time-consuming and labor-intensive lifting of the cover plate by a large crane in the prior art.

In order to achieve the above object, the technical scheme of the cover plate hoisting device in the present invention is as follows:

The cover plate hoisting device includes a hoisting bracket, on which a suspender is guided along the up and down direction, and a hoisting installation structure for connecting the hoist is provided at the bottom of the suspender, and the top of the suspender is assembled between the hoisting bracket The swing rod installed vertically inclined, the upper end of the swing rod is hinged on the top of the boom around the horizontally extending axis, the lower end of the swing rod is hinged on the lifting bracket around the horizontally extending axis through the connecting piece, the upper and lower ends of the swing rod The axis of rotation is parallel, the connecting piece moves along the radial direction of the suspension rod and is assembled on the lifting support, and a driving device for driving the lower end of the swing rod to move in the horizontal direction is installed between the swing rod and the lifting.

The driving device is a working cylinder, the cylinder body of the working cylinder is connected on the lifting support, and the piston rod of the working cylinder is connected on the swing rod or the connecting piece.

The working cylinder is arranged obliquely, the cylinder body of the working cylinder is hinged on the lifting support, and the piston rod of the working cylinder is hinged at the middle part of the fork between the lifting support and the boom.

The working cylinder is a push cylinder in the triangular space surrounded by the swing rod, the boom and the lifting bracket.

The connecting piece is the guide shaft pin fixedly connected to the end of the swing rod. The guide shaft pin is assembled in the guide groove provided on the lifting bracket. The outer peripheral surface of the guide shaft pin and the groove wall surface of the guide groove rotate around the rotation axis of the lower end of the swing rod. Cooperate.

The guide groove is a semi-through groove with an outer end recessed inwardly from the side of the lifting bracket, and the end is closed. The notch of the half-through groove is equipped with a stopper for sealing the opening and preventing the connector from coming out.

The installation structure of the spreader includes a suspension rope fixed at the bottom of the suspension rod, and there are more than two suspension ropes which are evenly spaced around the circumference of the suspension rod.

The lower ends of each suspension rope are fixed with suspension rings.

The bottom of the lifting frame is fitted with wheels.

In the present invention, the boom is guided and assembled on the lifting bracket along the up and down direction, and the vertically inclined swing rod assembled between the top of the boom and the lifting bracket, the upper end of the swing rod is hinged on the boom around the axis extending horizontally. The lower end of the swing rod is hinged on the lifting bracket around the horizontally extending axis through the connecting piece. The rotation axes of the upper and lower ends of the swing rod are parallel. A driving device for driving the lower end of the pendulum to move in the horizontal direction is installed between the hoisting and lifting. When the cover plate needs to be lifted, the driving device drives the lower end of the pendulum bar to move towards the direction close to the suspender bar, so that the upper end of the pendulum bar is tilted upwards, so that the spreader connected to the lower end of the suspender bar will drive the cover plate up; when When the cover plate needs to be lowered, the driving device will drive the lower end of the swing rod to move away from the boom to contact the lifting force exerted by the upper end of the swing rod on the top of the boom. Compared with the way in the prior art that large-scale cranes lift the cover through a complex hydraulic system, the driving device in the present invention is on the lifting bracket through the connecting piece, the pendulum and the boom. The formed link mechanism realizes the hoisting of the cover plate, the lifting principle and lifting action are simpler, and it also makes it more convenient for the staff to use, thus solving the time-consuming and laborious problem of lifting the cover plate by a large crane in the prior art.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the present invention;

FIG. 2 is a top view of FIG. 1 .

Detailed ways

Embodiment of the cover plate lifting device in the present invention: as shown in Figure 1 and Figure 2, the cover plate lifting device is a cover plate transfer and cover plate installation, removal lifting device, including two parts of the lifting bracket and the lifting mechanism. The hoisting bracket is a portal frame body made of legs 9 and crossbeams 11, and the top of the hoisting bracket is fixed with a support rod 5 extending from the middle part of the left edge. The lifting mechanism is mainly composed of the suspension rod 6 assembled in the middle of the beam 11 along the up and down direction, the swing rod 3 obliquely arranged between the support rod 5 and the suspension rod 6, and the connecting piece connected between the swing rod 3 and the support rod 5. And the driving device that is obliquely assembled between the support rod 5 and the fork 3 constitutes. The middle part of the crossbeam 11 is fixedly equipped with a guide sleeve 7 arranged vertically, the bottom of the guide sleeve 7 is worn on the middle part of the crossbeam 11, the top of the guide sleeve 7 is worn on the right side of the support rod 5, and the bottom of the guide sleeve 7 is mounted on the right side of the support rod 5. The inner wall surface guides and cooperates with the outer peripheral surface of the suspension rod 6 along the up and down direction. The bottom of the boom 6 is provided with a spreader installation structure connected to the spreader. The spreader installation structure is four equal-length suspension ropes 8 fixed at the bottom of the suspension rod 6, and the four suspension ropes 8 are spaced apart in the circumferential direction of the suspension rod 6. Evenly distributed, and all be fixed with suspension ring at the bottom of every suspension rope 8. The upper end of the swing rod 3 is hinged on the top of the boom 6 around the axis extending forward and backward, and the lower end of the swing rod 3 is fixedly connected on the connecting piece. The swing rod 3 gradually tilts upward from left to right. The middle section of 6, the crossbeam 11 left sides of hoisting support surround the swinging space of triangle. The connecting piece is a guide shaft pin 1 that guides and moves in the left and right directions and is assembled in the guide groove 2 provided on the left section of the support rod 5. The guide groove 2 is a half-way that is recessed from the left side of the support rod 5 to the right and has an open left end and a closed right end. The opening of the left end of the guide groove 2 is fixed with a stopper to block the opening, and the groove wall surface of the guide groove 2 and the outer peripheral surface of the guide shaft pin 1 rotate around the axis extending forward and backward, so that the swing rod 3 The rotation axes of the upper and lower ends are parallel to each other. The driving device is the jack 4 assembled in the swing space, the cylinder of the jack 4 is hinged on the support rod 5, and the piston rod of the jack 4 is hinged at the middle part of the fork 3 between the support rod 5 and the suspension rod 6.

The supporting legs 9 of the hoisting bracket have two and are arranged at intervals left and right, and the crossbeam 11 is bridged on the top of the supporting legs 9, and wheels 10 are respectively arranged on the bottom of each supporting leg 9, wherein the wheels 10 on the two supporting legs 9 are It is a universal wheel, so that the lifting device can be moved in the workshop by pushing and pulling the lifting bracket.

The operating principle of the hoisting device in the present embodiment is as follows:

Transfer cover: install the lifting ring on the lifting rope 8 to the cover, then operate the jack 4 to lift the cover, then move the trolley to the target position, then operate the jack 4 to lower the cover, and finally remove the lifting ring.

Install the cover plate: first operate the jack 4 to lift the cover plate, then move the lifting bracket to the top of the connecting flange with the cover plate, then operate the jack 4 to lower the cover plate to a position about 10mm away from the connecting surface, and then use the positioning pin to align the cover Plate bolt holes and connecting flange bolt holes (threaded holes) for positioning (since the sling 8 is used and the wheels 10 are universal wheels, the positioning can be easily realized when the positioning pin is positioned), and then lower the cover plate to a suitable position , Assembling connecting bolts, finally unload the suspension ring on the suspension rope 8, remove this device.

Remove the cover plate: first move the device to the top of the cover plate to be dismantled, then install the lifting ring 8 on the cover plate, then remove the connecting bolts, lift the cover plate by operating the jack 4, and then move the lifting bracket, put the After the cover plate was moved to a suitable position, the operation jack 4 lowered the cover plate, finally unloaded the suspension ring on the suspension rope 8, and removed the device.

In the above-mentioned embodiments, the driving device is a jack, and it is located in the swing space, so as to realize the raising and lowering of the suspender through a laborious lever structure, so as to ensure the lifting height. The side of the hinge point on the transport bracket is facing away from the boom, so that the driving process of the jack can use a labor-saving lever mechanism. In addition, the driving device can also use motors, cylinders, etc., especially when the driving device uses a motor, the motor can directly drive the connecting piece at the lower end of the pendulum to move on the lifting bracket to realize the drive of the pendulum, that is, the connecting piece uses a gear , sprocket and other structures, and the guide of the lower end of the swing rod on the lifting bracket adopts an meshing and matching structure.

Claims (9)

1. The cover plate hoisting device is characterized in that it includes a hoisting bracket on which a suspender is guided along the up and down direction, the bottom of the suspender is provided with a suspender installation structure for connecting the suspender, the top of the suspender and The vertically inclined swing rod assembled between the lifting brackets, the upper end of the swing rod is hinged on the top of the boom around the horizontally extending axis, and the lower end of the swing rod is hinged on the lifting bracket around the horizontally extending axis through the connecting piece. The rotation axes of the upper and lower ends of the pendulum are parallel, and the connecting piece moves along the radial direction of the suspender and is assembled on the lifting bracket, and a drive for driving the lower end of the pendulum to move in the horizontal direction is installed between the pendulum and the hoisting device. 2. The cover plate hoisting device according to claim 1, wherein the driving device is a working cylinder, the cylinder body of the working cylinder is connected to the lifting support, and the piston rod of the working cylinder is connected to the swing rod or the connecting piece. 3. The cover plate hoisting device according to claim 2, characterized in that the working cylinder is arranged obliquely, the cylinder body of the working cylinder is hinged on the lifting bracket, and the piston rod of the working cylinder is hinged on the middle part of the swing rod on the lifting bracket and the position between the boom. 4. The cover plate hoisting device according to claim 3, wherein the working cylinder is a push cylinder located in the triangular space surrounded by the swing rod, the boom and the lifting bracket. 5. The cover plate hoisting device according to any one of claims 1 to 4, characterized in that the connecting piece is a guide shaft pin fixedly connected to the end of the swing rod, and the guide shaft pin is assembled on the lifting bracket. In the guide groove, the outer peripheral surface of the guide shaft pin and the groove wall surface of the guide groove rotate around the rotation axis of the lower end of the fork. 6. The cover plate hoisting device according to claim 5, characterized in that, the guide groove is a semi-through groove with an outer end recessed inward from the side of the lifting bracket, a sealed end and a closed half-through groove, and the notch of the half-through groove The part is equipped with a stopper for sealing the opening and preventing the connector from coming out. 7. The cover plate hoisting device according to any one of claims 1 to 4, characterized in that the hanger installation structure includes a suspension rope fixed at the bottom of the suspender rod, and there are more than two suspension ropes arranged around the suspender rod. Evenly spaced upwards. 8. The cover plate lifting device according to claim 7, characterized in that, the lower ends of each lifting rope are fixed with lifting rings. 9. The cover plate hoisting device according to any one of claims 1 to 4, characterized in that the bottom of the hoisting bracket is equipped with wheels.