CN215626145U - Prefabricated member lifting appliance for shield tunnel - Google Patents

Abstract

The utility model discloses a shield tunnel prefabricated part lifting appliance which comprises a cross beam and a clamping plate; the lifting lugs are fixedly connected with the crane through a steel wire rope pulley block, a sliding groove is formed in the bottom surface of the cross beam, a sliding rail is arranged on the clamping plate, and the sliding rail is matched with the sliding groove, so that the clamping plate and the cross beam form a matching relation in sliding connection. The technical problem that the length/width of the prefabricated part can not be flexibly adjusted by the existing lifting appliance is solved.

Description

Prefabricated member lifting appliance for shield tunnel

Technical Field

The utility model relates to the technical field of hoisting equipment, in particular to a shield tunnel prefabricated part lifting appliance.

Background

The shield construction is that a shield is used for advancing in surrounding rocks, on one hand, a prefabricated part is used for supporting to prevent soil and sand from collapsing, and on the other hand, tunneling operation is carried out in the prefabricated part. In the shield construction process, two working procedures of tunneling and prefabricated part assembling are mutually linked and mutually influenced. The tunneling is a main process of the shield method tunnel construction, the actual axis of the tunnel is matched with the designed axis, the prefabricated part assembly must ensure the circular ring assembly quality of the finished tunnel, the tunnel is watertight, the ground is not greatly deformed, and the two processes jointly determine the construction quality and progress. The hoisting system is an important component of the shield prefabricated part assembling mechanism and is mainly used for finishing the work of grabbing, hoisting, adjusting the direction and the like of prefabricated parts in the tunnel, and the working efficiency, the working quality and the safety protection degree of the hoisting system influence the construction speed and the tunnel building quality.

The related hoisting methods are mainly divided into two types, one type is that a steel wire rope is matched with a pulley block to be hung with a lifting hook, the lifting hook is used for hooking the prefabricated part, and the hoisting of the prefabricated part is realized, so that the construction efficiency is high, the operation is simple, but the single-point hoisting cannot ensure the stability of the prefabricated part in the hoisting process, the prefabricated part can have the risks of overturning and collision in the transferring process, and the potential safety hazard is brought to the construction safety; the other hoisting method is to fix the prefabricated part on the clamping arm of the fixture by using the hoisting fixture to realize hoisting of the prefabricated part, the method can ensure that the prefabricated part keeps balance in the hoisting process, but the clamping arm of the existing hoisting tool is fixedly arranged, the clamping length/width can not be adjusted, the requirement of fast hoisting of the prefabricated parts with different lengths/widths cannot be met, and a great deal of time and cost are wasted due to the repeated replacement of the hoisting tool.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.

Disclosure of Invention

The utility model aims to provide a shield tunnel prefabricated part lifting appliance, and aims to solve the technical problems that the clamping length/width of the existing lifting appliance in a shield tunnel cannot be adjusted, and the lifting appliance cannot be simultaneously suitable for lifting prefabricated parts with different lengths/widths.

In order to solve the technical problems, the utility model adopts the following technical scheme:

designing a shield tunnel prefabricated part lifting appliance, which comprises a cross beam and a clamping plate; the lifting lugs are fixedly connected with the crane through a steel wire rope pulley block, a sliding groove is formed in the bottom surface of the cross beam, a sliding rail is arranged on the clamping plate, and the sliding rail is matched with the sliding groove, so that the clamping plate and the cross beam form a matching relation in sliding connection.

Preferably, the beam is further provided with positioning baffles, and the positioning baffles are fixed at two ends of the beam.

Preferably, a telescopic device is arranged between the positioning baffle and the clamping plate, a telescopic device base is fixedly connected with the positioning baffle, and a telescopic end of the telescopic device is fixedly connected with the clamping plate.

Preferably, be provided with the hole for hoist on splint and the prefab respectively, run through the fixed pin in the hole for hoist of splint and prefab, so that the prefab is fixed on splint.

Preferably, the diameter of the hoisting hole on the prefabricated member is 100-120mm, the depth is 180-200mm, and the distance from the centerline is 190-210 mm.

Compared with the prior art, the utility model has the main beneficial technical effects that:

1. the utility model can keep the prefab stable in the lifting process and has high lifting efficiency.

2. The clamping span of the clamping arm can be adjusted according to different lengths/widths of the prefabricated member, and the applicability is good.

Drawings

FIG. 1 is a schematic structural view of the present invention in use.

Fig. 2 is a schematic view of the structure of the cross beam and the clamping plate.

In the above figures, 1 is a beam, 11 is a lifting lug, 12 is a sliding chute, 13 is a baffle, 2 is a clamping plate, 21 is a sliding rail, 22 is a hoisting hole, 3 is a hydraulic telescopic device, and 4 is a prefabricated part.

Detailed Description

The following examples are intended to illustrate the present invention in detail and should not be construed as limiting the scope of the present invention in any way.

In the description of the present invention, it is to be understood that the orientations or positional relationships indicated as referring to the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings only for the convenience of describing technical solutions and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Example 1: a shield tunnel prefabricated part lifting appliance is shown in figures 1 and 2 and comprises a cross beam 1 and a clamping plate 2; two lifting lugs 11 are arranged on the top surface of the beam 1, the lifting lugs 11 are symmetrically arranged close to two ends of the beam 1, so that a clamp can keep horizontal stability when the prefabricated part 4 is hoisted, the prefabricated part is not inclined, and the lifting lugs 11 are mutually matched and connected to a crane through a steel wire rope and a pulley block; a T-shaped sliding groove 12 is formed in the table top at the bottom of the cross beam 1, the sliding groove 12 is longitudinally arranged along the cross beam, positioning baffles 13 are fixedly welded at two ends of the sliding groove 12 and used for preventing the clamping plate 2 from sliding out of the sliding groove 12, and four threaded holes are formed in the positioning baffles 13.

The top of the clamping plate 2 is provided with a T-shaped slide rail 21 which is matched with a slide groove 12 on the cross beam 1, so that the clamping plate 2 is vertically connected to the bottom of the cross beam 1 in a sliding manner, a hydraulic telescopic device 3 is arranged between the positioning baffle 13 and the clamping plate 2, four bolt holes are formed in a base of the hydraulic telescopic device 3 and matched with threaded holes in the positioning baffle 13, fastening bolts penetrate through the bolt holes, the base of the hydraulic telescopic device 3 is fixedly connected to the positioning baffle 13 by screwing nuts, and a telescopic end of the hydraulic telescopic device 3 is fixedly connected with the clamping plate 2 in a welding manner; the clamping plates 2 are controlled to move relatively or oppositely on the beam 1 by the extension or the shortening of the telescopic ends of the hydraulic telescopic devices 3, so that the clamping range between the clamping plates 2 meets the length/width of the prefabricated parts 4 with different models, the prefabricated parts 4 with different models can be lifted, the clamping plate 2 is also provided with hoisting holes 22, when the prefabricated member is transported, the hoisting holes are drilled on the two sides of the prefabricated member 4, namely the side surfaces of the clamping plate 2 which are clamped and contacted with the prefabricated member 4, the distance between the position of the hoisting hole on the prefabricated member and the central line position thereof is within the range of 190 plus 210mm, the diameter setting range of the prefabricated part hoisting hole is 120mm in the range of 100 plus one mm and the depth setting range is 200mm in the range of 180 plus one mm according to the installation sequence of the prefabricated part, the clamping plate 2 and the prefabricated part 4 are arranged in the hoisting hole in a penetrating mode through fastening bolts, and the clamping plate 2 and the prefabricated part 4 to be hoisted are tightly fixed together through screwing the bolts.

The shield tunnel prefabricated part lifting appliance comprises the following specific operation methods:

lug 11 on the shield tunnel prefab hoist passes through the wire rope assembly pulley and is connected with the hoist, and splint 2 is adjusted the distance between splint 2 according to the width/length of prefab 4 through the extension of hydraulic telescoping device 3 or shorten, satisfies splint 2 and prefab 4 and can closely laminate, adjusts through the hoist shield tunnel prefab hoist's upper and lower height makes the hoist and mount hole 22 on splint 2 and the hoist and mount hole coincidence of 4 on the prefab, utilizes the bolt to wear to locate in the hoist and mount hole, and the bolt of screwing makes prefab 4 fix on splint 2, drives the hoist will through the hoist 4 handling of prefab to the construction position.

While the utility model has been described in detail with reference to the drawings and examples, it will be understood by those skilled in the art that various changes in the details of the embodiments and various changes in the details of construction and materials may be made therein without departing from the spirit of the utility model and without departing from the scope of the utility model.

Claims (5)

1. A shield tunnel prefabricated part lifting appliance comprises a cross beam and a clamping plate; the lifting device is characterized in that a sliding groove is formed in the bottom surface of the cross beam, a sliding rail is arranged on the clamping plate, and the sliding rail is matched with the sliding groove, so that the clamping plate and the cross beam form a matching relation in sliding connection.

2. The shield tunnel preform hanger of claim 1, wherein the cross beam is further provided with positioning baffles fixed at both ends of the cross beam.

3. The shield tunnel preform lifting appliance according to claim 2, wherein a telescopic device is arranged between the positioning baffle and the clamping plate, the telescopic device is fixedly connected with the positioning baffle through a base, and a telescopic end of the telescopic device is fixedly connected with the clamping plate.

4. The shield tunnel prefabricated part hanger of claim 1, wherein the clamping plate and the prefabricated part are respectively provided with corresponding hoisting holes, and the prefabricated part is fixed on the clamping plate through fixing pins penetrating through the hoisting holes of the clamping plate and the prefabricated part.

5. The shield tunnel preform lifting appliance of claim 4, wherein the diameter of the lifting hole on the preform is 120mm, the depth is 180 mm and 200mm, and the distance from the centerline is 190 mm and 210 mm.

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