CN210559009U

CN210559009U - Four-cylinder jacking system of lifting tower

Info

Publication number: CN210559009U
Application number: CN201921110674.1U
Authority: CN
Inventors: 贾林昕; 李俊; 唐豪
Original assignee: Sichuan Construction Machinery Group Co Ltd
Current assignee: Sichuan Construction Machinery Group Co Ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-05-19
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses a four jar jacking systems of lift tower in tower crane field, including the standard festival with the cover at the outer frame that climbs of standard festival, the frame bottom that climbs is equipped with a pneumatic cylinder of arranging along vertical direction respectively all around, the upper end of pneumatic cylinder with climb the frame and link to each other, the lower extreme links to each other with the jacking crossbeam, the jacking crossbeam is connected for dismantling with the standard festival. The utility model has the advantages that: the four hydraulic cylinders are arranged on the climbing frame and are divided into two groups for alternative jacking when the sections are added, and after the current group of hydraulic cylinders reach the preset jacking stroke and stop, the next group of hydraulic cylinders can be immediately installed in place to continue jacking until the required stroke is reached. The whole jacking process basically has no pause, and the process of section reduction can be continuously completed without any stop regardless of large stroke. The difficulty of operation can be reduced, the time required by the increase and decrease of the section is greatly shortened, and the construction efficiency is improved.

Description

Four-cylinder jacking system of lifting tower

Technical Field

The utility model relates to a tower crane field especially relates to a four-cylinder jacking system that tower crane lift body of tower used.

Background

Self-elevating tower cranes typically employ a single cylinder jacking system to raise and lower standard knots. And because the jacking load of some large-scale tower cranes is large, and a single-cylinder jacking system is difficult to meet the requirements, a double-cylinder jacking system is adopted, and two hydraulic cylinders synchronously stretch and retract to work. However, whether single-cylinder jacking or double-cylinder jacking is adopted, the tower crane completes one-time section adding and can complete the section lowering only by continuously stretching and contracting the hydraulic cylinder twice. In the field construction, a large amount of time is consumed for lifting the tower body, and the construction progress is greatly influenced.

SUMMERY OF THE UTILITY MODEL

For overcoming the defects that the process of lifting the tower body of the existing tower crane is troublesome and the like, the utility model aims to solve the technical problems that: the four-cylinder jacking system capable of lifting the tower body more conveniently is provided.

The utility model provides a technical scheme that its technical problem adopted is:

the four-cylinder jacking system of the lifting tower comprises a standard joint and a climbing frame sleeved outside the standard joint, wherein hydraulic cylinders arranged in the vertical direction are arranged on the periphery of the bottom of the climbing frame respectively, the upper end of each hydraulic cylinder is connected with the climbing frame, the lower end of each hydraulic cylinder is connected with a jacking cross beam, and the jacking cross beam is detachably connected with the standard joint.

Furthermore, the climbing frame is divided into an upper part and a lower part by taking the middle frame as a boundary, the upper part is the height of one standard knot, a knot adding surface is arranged on one surface of the climbing frame, the lower part is not less than the height of half of the standard knot, and climbing frame connecting holes for installing hydraulic cylinders are formed in the periphery of the bottom of the middle frame.

Further, the middle part of the jacking cross beam is provided with a cross beam connecting hole.

Further, all be equipped with on the montant of four sides of standard festival and mark time, the both ends of jacking crossbeam are equipped with climbs the claw, but climb the claw joint on marking time.

Furthermore, the telescopic length of the piston rod of the hydraulic cylinder is not less than half of the length of the standard section, and the distance between the upper step and the lower step which are adjacent on the standard section is half of the length of the standard section.

The utility model has the advantages that: the four hydraulic cylinders are arranged on the climbing frame and are divided into two groups for alternative jacking when the sections are added, and after the current group of hydraulic cylinders reach the preset jacking stroke and stop, the next group of hydraulic cylinders can be immediately installed in place to continue jacking until the required stroke is reached. The whole jacking process basically has no pause, and the process of section reduction can be continuously completed without any stop regardless of large stroke. The difficulty of operation can be reduced, the time required by the increase and decrease of the section is greatly shortened, and the construction efficiency is improved.

Drawings

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

Fig. 2 is a schematic structural diagram of a standard knot of the present invention.

Fig. 3 is a schematic structural view of the climbing frame of the present invention.

Fig. 4 is a schematic structural view of the hydraulic cylinder of the present invention.

Fig. 5 is a schematic structural view of the jacking beam of the present invention.

Labeled as: 1-standard section, 11-step, 2-climbing frame, 21-middle frame, 22-node adding surface, 23-climbing frame connecting hole, 3-hydraulic cylinder, 31-cylinder barrel mounting hole, 32-piston rod mounting hole, 4-jacking cross beam, 41-climbing claw and 42-cross beam connecting hole

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, the utility model discloses a four jar jacking systems of lift tower, including standard festival 1 and the cover frame 2 that climbs outside standard festival 1, the frame 2 bottom of climbing is equipped with a pneumatic cylinder 3 of arranging along vertical direction respectively all around, and the upper end of pneumatic cylinder 3 links to each other with frame 2 that climbs, and the lower extreme links to each other with jacking crossbeam 4, jacking crossbeam 4 is connected for dismantling with standard festival 1. The standard knot 1 is similar with the even current structure of climbing frame 2, only need set up the fixed part that is used for fixed jacking crossbeam 4 on standard knot 1, and this fixed part can adopt forms such as setting up the through-hole or welding couple.

The use process of the device is as follows: firstly, the jacking cross beams 4 on the hydraulic cylinders 3 on the left side and the right side of the climbing frame 2 are fixed with the standard knot 1, then the two hydraulic cylinders 3 are synchronously started, the climbing frame 2 is enabled to move upwards, after a certain distance is moved, the jacking cross beams 4 on the two hydraulic cylinders 3 on the front side and the rear side of the climbing frame 2 are fixed with the standard knot 1, meanwhile, the jacking cross beams 4 on the left side and the right side are detached from the standard knot 1, finally, the hydraulic cylinders 3 on the front side and the rear side of the climbing frame 2 are synchronously started, the hydraulic cylinders 3 on the left side and the right side are folded, the climbing frame 2 continues to be jacked. Compare traditional jacking system, this system can realize continuous jacking, has improved the efficiency of construction greatly.

In front of a tower crane lifting tower body, balancing needs to be carried out through a hydraulic cylinder 3, in order to reduce the difficulty of balancing, in order to improve the lifting stability of a climbing frame 2, the climbing frame 2 is divided into an upper part and a lower part by taking a middle frame 21 as a boundary, as shown in fig. 3, the upper part is the height of a standard knot, a knot adding surface 22 is arranged on one surface of the climbing frame 2, the lower part is not smaller than the height of a half standard knot, and climbing frame connecting holes 23 for installing the hydraulic cylinder 3 are arranged around the bottom of the middle frame 21.

As shown in fig. 4, the end of the cylinder barrel of the hydraulic cylinder 3 is provided with a cylinder barrel mounting hole 31, the end of the piston rod is provided with a piston rod mounting hole 32, for the convenience of installation, the middle of the jacking cross beam 4 is provided with a cross beam connecting hole 41, and the hydraulic cylinder 3 can be installed and fixed by penetrating a bolt or a pin into the corresponding mounting hole and connecting hole. The hydraulic cylinder 3 comprises a hydraulic pump, a hydraulic control valve and other parts, and works in a mode that the two cylinders stretch synchronously.

As for the fixed form of jacking crossbeam 4 and standard festival 1 as shown in fig. 2, fig. 5 all be equipped with on the montant of 1 four sides of standard festival and mark time 11, mark time 11 can be for the steel sheet structure of welding on 1 montant surface of standard festival, the both ends of jacking crossbeam 4 are equipped with climbs claw 42, but climb claw 42 joint and fix on 11 marking time.

In order to reduce the frequency of alternative jacking, the telescopic length of the piston rod of the hydraulic cylinder 3 is not less than half of the length of the standard section, and the distance between the upper step 11 and the lower step 11 which are adjacent on the standard section 1 is half of the length of the standard section, so that only one-time alternative jacking is needed to be carried out on the hydraulic cylinders 3 on the left side, the right side, the front side and the rear side, and then one standard section height can be increased, and the efficiency of the lifting section is improved.

This application adopts the structural style of jacking in turn of two sets of pneumatic cylinders, has avoided the problem of frequent change pneumatic cylinder, makes whole jacking process basically can not have what to pause, regardless of how big stroke can be incessant completion in succession, and the festival process that falls is also so, can reduce the degree of difficulty of operation, and great reduction adds the festival required time that falls, has improved the efficiency of construction, has fine practicality and application prospect.

Claims

1. Four jar jacking systems of lifting tower, including standard festival (1) and cover frame (2) that climbs outside standard festival (1), characterized by: the climbing frame is characterized in that hydraulic cylinders (3) which are arranged in the vertical direction are arranged on the periphery of the bottom of the climbing frame (2) respectively, the upper ends of the hydraulic cylinders (3) are connected with the climbing frame (2), the lower ends of the hydraulic cylinders are connected with the jacking cross beam (4), and the jacking cross beam (4) is detachably connected with the standard knot (1).

2. The lift tower four-cylinder jacking system of claim 1, wherein: the climbing frame (2) is divided into an upper part and a lower part by taking the middle frame (21) as a boundary, the upper part is the height of one standard knot, one surface of the climbing frame is provided with a knot adding surface (22), the lower part is not less than the height of half of the standard knot, and climbing frame connecting holes (23) for installing the hydraulic cylinders (3) are formed in the periphery of the bottom of the middle frame (21).

3. The lift tower four-cylinder jacking system of claim 1, wherein: and the middle part of the jacking cross beam (4) is provided with a cross beam connecting hole (41).

4. A lifting tower four-cylinder jacking system as claimed in any one of claims 1, 2 or 3, wherein: all be equipped with on the montant of four sides of standard festival (1) and mark time (11), the both ends of jacking crossbeam (4) are equipped with climb claw (42), but climb claw (42) joint mark time (11).

5. The lift tower four-cylinder jacking system of claim 4, wherein: the telescopic length of the piston rod of the hydraulic cylinder (3) is not less than half of the length of the standard section, and the distance between the upper step (11) and the lower step (11) which are adjacent on the standard section (1) is half of the length of the standard section.