CN104828708B - In-situ vertical lifting device for large transformer bell jar - Google Patents

Abstract

The invention discloses an indoor in-situ vertical hoisting device for a large transformer bell jar, wherein a left double-shear fork hoisting device and a right double-shear fork hoisting device which are pushed to lift by a left pneumatic cylinder and a right pneumatic cylinder are respectively arranged on a left base and a right base; a displacement sensor for detecting whether the lifting heights of the left and right double-shear-fork lifting devices are consistent is arranged on the cross beam; the displacement sensor is connected with the control system; the cross beam comprises a left group of longitudinal rods, a right group of longitudinal rods, a front cross rod and a rear cross rod, the left group of longitudinal rods and the right group of longitudinal rods are respectively composed of two longitudinal rods, and each longitudinal rod is fixedly connected with the top of a shearing fork lifting piece of the double-shearing fork lifting device; four cross rods which are parallel to each other are fixedly connected with the left group of longitudinal rods and the right group of longitudinal rods. The transformer lifting device adopts a double-shear fork type gantry structure, the maximum lifting height can reach 8 meters, and the maximum lifting weight can reach 10 tons.

Description

In-situ vertical lifting device for large transformer bell jar

technical field

The invention relates to a lifting device for a transformer bell jar.

Background technique

In the prior art, the lifting of the indoor transformer bell jar generally adopts ordinary lifting facilities, and the building structure needs to be destroyed during the construction to operate, and the skills of the operators are greatly affected, and the working performance is not ideal, which needs further improvement.

Contents of the invention

The purpose of the present invention is to provide a kind of reasonable structure, good working performance large-scale transformer bell indoor vertical hoisting device on the spot.

Technical solution of the present invention is:

An in-situ vertical lifting device for a large-scale transformer bell jar, which is characterized in that it includes left and right bases, and left and right double scissor lifting devices are respectively installed on the left and right bases, which are pushed up and down by left and right pneumatic cylinders. The top of the right double-scissor lifting device is equipped with a crossbeam, and the hook for lifting the transformer hanging bell is installed on the crossbeam; a displacement sensor is installed on the crossbeam to detect whether the lifting height of the left and right double-scissor lifting devices is consistent; the displacement sensor is connected with the control system, The control system is connected with the synchronous control device that controls the synchronous movement of the left and right pneumatic cylinders; the double scissor lifting device is composed of two scissor lifting parts, each scissor lifting part is composed of multiple scissor units, and each scissor unit It consists of two scissor bars connected by a central pin shaft, and a ring of disc stop pin sockets that cooperate with the disc stop pin is arranged on the outer periphery of the connection part of the two scissor bars;

The base includes a support frame, on which is mounted an air pressure support device, and the four air cylinders of the air pressure support device work together, and the bottom of the support frame is equipped with a moving device; in the working state, the telescopic rod of the air cylinder is propped up and supported on the ground, and the moving device is not in contact with the ground. When it is in contact with the ground, the pneumatic cylinder bears all the load; when it needs to move, the telescopic rod of the pneumatic cylinder retracts, the mobile device contacts the ground, and the pneumatic cylinder does not directly contact the ground, so that the whole lifting device can move in a small indoor range.

The transformer lifting device of the present invention adopts a double scissors type gantry structure, the maximum lifting height can reach 8 meters, and the maximum lifting weight can reach 12 tons. The device is designed as a combined modular structure, and the lift adopts pneumatic drive technology. Each component of the device (such as the scissor bar lifting component and the beam) is a modular structure, which can be assembled according to actual needs to achieve different heights and ranges of lifting, which is convenient for task operations in indoor spaces. In addition, the lifting device is equipped with different lifting tools, such as steel ropes, canvas belts, etc., to meet the lifting requirements of different objects.

Description of drawings

The present invention will be further described below in conjunction with drawings and embodiments.

Fig. 1 is a structural schematic diagram of an embodiment of the present invention.

Figure 2 is a schematic diagram of the working principle of the control system.

Fig. 3 is a schematic diagram of the structure of the scissor unit.

detailed description

An in-situ vertical lifting device for a large-scale transformer bell jar, comprising left and right bases 1, 2, and left and right double scissor lifting devices 3, 4 respectively installed on the left and right bases, which are lifted and lifted by left and right pneumatic cylinders, The top of the left and right double scissor lifting devices is equipped with a crossbeam 5, on which a hook for lifting the transformer hanging bell is installed; The control module 7 is connected, and the main frame 8 of the control module is connected with the synchronous control device 13 which controls the synchronous movement of the left and right pneumatic cylinders 11 and 12;

When working, the host computer of the control system issues instructions, the left and right pneumatic cylinders work, and the left and right pneumatic cylinders push the left and right double scissor lifting devices to drive the beam up, and the beam lifts the transformer bell jar through the hook; the displacement sensor is used Check whether the lifting heights of the left and right double scissor lifting devices on both sides of the beam are consistent, and give real-time feedback. If there is an error, it will be adjusted through the control system to achieve synchronous operation of the lifting heights on both sides to ensure that the objects being lifted during the lifting process balance.

The base includes a support frame, on which an air pressure support device 9 is installed, and four pneumatic cylinders of the air pressure support device work together, and the bottom of the support frame is equipped with a moving device 10; No contact with the ground, the pneumatic cylinder bears all the load; when it needs to move, the telescopic rod of the pneumatic cylinder retracts, the mobile device contacts the ground, the pneumatic cylinder does not directly contact the ground, and the whole lifting device can move indoors in a small range. The host 8 of the control system realizes the control of the coordinated action air pressure module 14, thereby completing the control of the four supporting air cylinders at the bottom.

The double scissor lifting device, considering the indoor use, needs manpower to move in and out. The device is composed of a number of scissor bars that can be moved by a single person.

The double scissor lifting device is composed of two scissor lifting parts, each scissor lifting part is composed of a plurality of scissor units 15, and each scissor unit is composed of two scissor bars connected by a central pin shaft, A circle of disc stop pin sockets 17 cooperating with the disc stop pin 16 is arranged on the outer periphery of the connecting parts of the two scissor bars. When the hoisting device of the bell jar is in the process of rising or falling, the scissor unit and the stop pin of the disc are in a state of separation. At this time, the two scissor bars of the scissor unit can rotate relative to each other, so as to realize the lifting of the lifting device; when it is required to lift When the device is kept at a certain height, insert the disc stop pin into the corresponding hole of the scissor unit, then the two scissor bars cannot move relative to each other, and the lifting device will remain at a certain height.

Claims (1)

1. a high-power transformer bell jar indoor vertical lifting device on the spot, is characterized in that: bag Include left and right base, left and right base is respectively mounted by left and right pneumatic cylinder promote lifting a left side, Right double scissor lifting device, the top dress crossbeam of left and right pair of scissor lifting device, crossbeam fills There is the suspension hook promoting transformator bell jar；Left and right pair of scissor lifting device liter of dress detection on crossbeam The most consistent displacement transducer drops；Displacement transducer is connected with control system, controls system The sync control device being synchronized with the movement with the left and right pneumatic cylinder of control of uniting is connected；Described double shear fork rises Falling unit is made up of two scissors fork elevating parts, and each scissors fork elevating part is by multiple scissor unit groups Becoming, each scissor unit is made up of two scissors rods connected by central pin shaft, cuts at two Fork arm connecting portion periphery arranges the disk latch jack that a circle coordinates with disk latch；

Base includes scaffold, and scaffold fills air pressure supporting arrangement, air pressure supporting arrangement Four pneumatic cylinder collaborative works, bottom scaffold fill mobile device；During duty, gas The expansion link of cylinder pressure is propped up, and on the ground, mobile device does not contacts with ground, pneumatic cylinder in supporting Undertake whole load；When needs are mobile, the expansion link of pneumatic cylinder is retracted, mobile device and ground Face contacts, and pneumatic cylinder is not directly contacted with ground, it is achieved the little scope in indoor of whole boom hoisting Movement；Realized co-operating air pressure module by the main frame of control system to control, thus complete the end Four, portion supports the control of pneumatic cylinder；

During work, the main frame of control system sending instruction, left and right pneumatic cylinder works, left, Right pneumatic cylinder promotes left and right pair of scissor lifting device, drives crossbeam to rise, and crossbeam passes through suspension hook Promote transformator bell jar；Displacement transducer is used to carry out detecting the left and right double shear fork of crossbeam both sides Lowering or hoisting gear adjustable height is the most consistent, and Real-time Feedback, if there being error, passes through control system Adjust, reach the synchronization job of both sides lift height, it is ensured that elevated object in lifting process Balance.