Crane for hoisting bridge prefabricated part

Abstract

The utility model discloses a hoisting machine for hoisting a bridge prefabricated part. The hoisting machine comprises a hoisting basket for placing the prefabricated part; the baffles are mounted on the inner side of the hoisting basket at intervals; limiting damping assemblies are installed at intervals between the baffles and the hoisting basket, the baffles are connected with the hoisting basket through the limiting damping assemblies, and the limiting damping assemblies can adjust the damping performance of the limiting damping assemblies. In the hoisting process, the four faces of the prefabricated part abut against the baffles, the gaps between the baffles and the hoisting basket are connected with the hoisting basket through the limiting damping assemblies, and the limiting damping assemblies generate large damping force to abut against the baffles to conduct limiting protection on the prefabricated part. And the situation that the prefabricated part shakes in the hoisting basket in the hoisting process, displaces, collides and is damaged is avoided, and the problems that when the prefabricated part is smaller than the inner space of the hoisting basket, an interval exists, and when the prefabricated part shakes in the hoisting process, the prefabricated part can displace with the hoisting basket to be collided and damaged are solved.

Description

Technical Field

[0001] The utility model relates to a hoisting machine for hoisting prefabricated components of a bridge, belonging to the technical field of hoisting construction equipment. Background Art

[0002] To improve efficiency during bridge construction, some components, such as cable troughs, are prefabricated. Once the span is formed, the prefabricated components are hoisted onto the span for later installation. Because the prefabricated components require assembly and docking, they must be protected during hoisting to prevent damage.

[0003] Existing technologies often use a hoisting basket (see Chinese Patent Publication No. CN212503602U) for hoisting. Although placing prefabricated components in the hoisting basket can prevent damage from external collisions, when the prefabricated components are smaller than the internal space of the hoisting basket, there is a gap. If the prefabricated components shake during hoisting, they may be displaced from the hoisting basket and cause collisions and damage. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a lifting machine for lifting prefabricated bridge components.

[0005] The utility model is achieved through the following technical solutions.

[0006] The utility model provides a lifting machine for lifting prefabricated bridge components, comprising:

[0007] A lifting basket for placing precast components;

[0008] Baffles installed at intervals on the inside of the lifting basket;

[0009] A limited damping component is installed between the baffle and the hanging basket. The baffle is connected to the hanging basket through the limited damping component. The limited damping component can adjust its own damping capacity.

[0010] The baffles are four and are distributed in an array at intervals on the four sides of the inner side of the hoisting basket to block the four sides of the prefabricated components, and there is a gap between the baffles and the inner side of the hoisting basket.

[0011] It also includes a ground for placing the hoisting basket. There is a bridge on the ground on the side of the hoisting basket. A crane with its own hoisting cable is installed on the span of the bridge. The hoisting cable of the crane is detachably fixedly connected to the four corners of the hoisting basket.

[0012] The position limiting damping assembly includes a square tube A fixedly connected to the baffle;

[0013] The square tube B is fixedly installed on the middle plate of the lifting basket, and the square tube A is sleeved inside the square tube B and can only be extended and retracted but not rotated.

[0014] The position limiting damping assembly also includes a spiral damping member placed in the hollow interior of square tube A and square tube B. The two ends of the spiral damping member correspond to the baffle and the hanging basket. The spiral damping member is spiral-shaped and hollow inside.

[0015] The position limiting damping assembly also includes a liquid-setting cylinder which is in airtight communication with the hollow interior of the spiral damping member through a communicating pipe, and the shell of the liquid-setting cylinder is fixed on the hanging basket; the liquid-setting cylinder is blocked by a sealing plug.

[0016] The limit damping assembly also includes a sealing plug fixed with a screw, the screw passes through the adjustment seat, the adjustment seat is fixedly installed on the middle plate of the hanging basket, and adjustment nuts are screwed back on the screws on both sides of the adjustment seat.

[0017] The interior of the spiral damping element, the communicating tube and the liquid placing cylinder are filled with a damping fluid consisting of hydraulic oil.

[0018] The beneficial effect of the present invention is that during the hoisting process, the prefabricated components are supported by baffles on all four sides, and the gap between the baffles and the hoisting basket is connected to the hoisting basket through a limit damping component. The limit damping component generates a large damping force to support the baffles to limit the prefabricated components, thereby avoiding the prefabricated components from shaking, displacement, collision and damage inside the hoisting basket during the hoisting process, and solving the problem that when the prefabricated components are smaller than the internal space of the hoisting basket and there is a gap, the prefabricated components will be displaced with the hoisting basket and cause collision and damage when shaking during the hoisting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model when it is installed and connected on the ground;

[0020] Figure 2 This is a schematic diagram of the distribution of the hoisting basket, prefabricated components, limit damping components, and baffles of the utility model;

[0021] Figure 3 This is a schematic diagram of the distribution of the hoisting basket, limit damping assembly, and baffle of the utility model;

[0022] Figure 4 This is a distribution diagram of the limit damping components of the utility model;

[0023] In the figure: 1-bridge; 11-bridge span; 2-crane; 21-cable; 3-hoisting basket; 4-limited damping assembly; 5-baffle; 6-prefabricated component; 7-ground;

[0024] 41-square tube A; 42-square tube B; 43-spiral damping element; 44-damping fluid; 45-connecting tube; 46-liquid cylinder; 47-sealing plug; 48-screw; 49-adjusting seat; 50-adjusting nut. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the described solution.

[0026] like Figures 1 to 4 shown.

[0027] The present application discloses a lifting machine for lifting prefabricated bridge components. The lifting machine includes:

[0028] The crane 2 is installed on the span 11 of the bridge 1. The crane 2 is composed of a crane frame, a winch, a pulley, a counterweight and a suspension cable 21. The specific connection relationship of this is a prior art and will not be described in detail. For related technology, please refer to Chinese Patent Publication No. CN215287771U; the crane 2 can also be directly composed of a crawler crane.

[0029] The hoisting cable 21 of the crane 2 is connected to the hoisting basket 3, and a baffle 5 is installed on the side of the hoisting basket 3 through a limit damping component 4. The limit damping component 4 and the baffle 5 are four spaced arrays distributed on the four sides of the inner side of the hoisting basket 3 to block the four sides of the prefabricated component 6; Figures 1 to 3 In the figure, the cable laying trough is used as a prefabricated component 6 for illustration.

[0030] When the baffle 5 needs to press the limit damping assembly 4 to retreat and place the prefabricated component 6, the limit damping assembly 4 is adjusted to have a smaller damping property so that it can be compressed quickly, thereby realizing the quick placement of the prefabricated component 6; when the baffle 5 needs to be limited by the limit damping assembly 4 against the prefabricated component 6, the limit damping assembly 4 is adjusted to have a larger damping property to generate a larger damping force to achieve dynamic damping limit.

[0031] The position limiting damping assembly 4 includes a square tube A41 fixedly connected to the baffle 5;

[0032] The square tube B42 is fixedly installed on the middle plate of the hoisting basket 3. The square tube A41 is sleeved in the square tube B42 and can only be extended and not rotated;

[0033] The spiral damping member 43 is placed in the hollow interior of the square tube A41 and the square tube B42. The two ends of the spiral damping member 43 are against the baffle 5 and the middle plate of the hoisting basket 3. The spiral damping member 43 is spiral-shaped and hollow inside.

[0034] A liquid cylinder 46 is connected to the hollow interior of the spiral damping member 43 through a connecting pipe 45, and the outer shell of the liquid cylinder 46 is fixed to the hanging basket 3; the liquid cylinder 46 is blocked by a sealing plug 47, and the sealing plug 47 is fixed with a screw 48, which passes through an adjustment seat 49. The adjustment seat 49 is fixedly mounted on the middle plate of the hanging basket 3, and an adjusting nut 50 is screwed back on the screw 48 on both sides of the adjustment seat 49;

[0035] The interior of the spiral damping element 43 , the communicating tube 45 and the liquid-setting cylinder 46 are filled with a damping fluid 44 consisting of hydraulic oil. The damping fluid 44 is replaced with other fluid substances having flow characteristics.

[0036] When the baffle 5 needs to press the limit damping assembly 4 back to place the prefabricated component 6, the screw 48 moves back with the sealing plug 47 toward the connecting pipe 45, so that the internal space of the liquid cylinder 46 increases, and the damping fluid 44 can be dispersed from the inside of the spiral damping member 43 through the connecting pipe 45 into the liquid cylinder 46. At this time, the pressure of the damping fluid 44 inside the spiral damping member 43 becomes smaller. At this time, the damping property of the limit damping assembly 4 becomes smaller and can be compressed quickly. The baffle 5 can press the limit damping assembly 4 to perform a large compression, thereby realizing the rapid placement of the prefabricated component 6.

[0037] After the prefabricated component 6 is placed on the bottom surface of the hoisting basket 3, the four baffles 5 need to be pressed against the four sides of the prefabricated component 6 by the corresponding four limit damping assemblies 4 to perform damping and position limiting. The screw 48 carries the sealing plug 47 to advance toward the connecting pipe 45, making the internal space of the fluid cylinder 46 smaller. The damping fluid 44 is squeezed from the fluid cylinder 46 through the connecting pipe 45 and flows into the spiral damping member 43. At this time, the pressure of the damping fluid 44 inside the spiral damping member 43 increases. At this time, the damping property of the limit damping assembly 4 increases and cannot be compressed quickly, so that the limit damping assembly 4 generates a large damping force to press against the baffles 5 to perform dynamic damping and position limiting on the prefabricated component 6. The crane 2 then retracts the hoisting cable 21 to lift the hoisting basket 3 with the prefabricated component 6 from the ground 7. After the prefabricated component 6 is hoisted onto the bridge span 11 , the screw 48 is again moved back toward the connecting pipe 45 with the sealing plug 47 , and the prefabricated component 6 is quickly taken out and assembled on the bridge span 11 .

[0038] By changing the pressure of the damping fluid 44 , the spiral damping coefficient of the spiral damping member 43 is changed, thereby changing the compressible displacement stroke of the spiral damping member 43 , thereby controlling whether the limit damping assembly 4 can be quickly compressed.

[0039] When the prefabricated component 6 is placed on the hoisting basket 3 and is lifted from the ground 7, the hoisting basket 3 protects the prefabricated component 6 from being damaged by collision with the side of the bridge span 11 outside the hoisting basket 3; the prefabricated component 6 is supported by the baffles 5 on all four sides, and the gap between the baffles 5 and the hoisting basket 3 is connected to the hoisting basket 3 through the limit damping component 4. The limit damping component 4 generates a large damping force to resist the baffles 5 to limit the prefabricated component 6, thereby avoiding the situation in which the prefabricated component shakes, displaces, collides and is damaged inside the hoisting basket 3 during the hoisting process, and solves the problem that when the prefabricated component is smaller than the internal space of the hoisting basket, there is a gap, and when the prefabricated component shakes during the hoisting process, it will be displaced and collided with the hoisting basket.

Claims

1. A lifting machine for lifting prefabricated bridge components, characterized in that: include: A hanging basket (3) for placing prefabricated components (6); Baffles (5) installed at intervals on the inner side of the hanging basket (3); A limited damping assembly (4) is installed between the baffle (5) and the hanging basket (3), and the baffle (5) is connected to the hanging basket (3) through the limited damping assembly (4). The limited damping assembly (4) can adjust the size of its own damping property; It also includes a ground (7) for placing the hoisting basket (3), a bridge (1) is provided on the ground (7) on the side of the hoisting basket (3), a crane (2) with its own hoisting cable (21) is installed on the span (11) of the bridge (1), and the hoisting cable (21) of the crane (2) is detachably fixedly connected to the four corners of the hoisting basket (3); The position limiting damping assembly (4) comprises a square tube A (41) fixedly connected to the baffle (5); The square tube B (42) is fixedly mounted on the middle plate of the hanging basket (3), and the square tube A (41) is sleeved in the square tube B (42) and can only be extended and not rotated; The position limiting damping assembly (4) further includes a spiral damping member (43) placed in the hollow interior of the square tube A (41) and the square tube B (42), with the two ends of the spiral damping member (43) correspondingly abutting against the baffle (5) and the hanging basket (3), the spiral damping member (43) being in a spiral shape, and the interior of the spiral damping member (43) being hollow; The position limiting damping assembly (4) further comprises a liquid-setting cylinder (46) which is in sealed communication with the hollow interior of the spiral damping member (43) via a connecting pipe (45); the outer shell of the liquid-setting cylinder (46) is fixed on the hanging basket (3); the liquid-setting cylinder (46) is blocked by a sealing plug (47); The position limiting damping assembly (4) further comprises a sealing plug (47) fixed with a screw (48), the screw (48) passing through an adjustment seat (49), the adjustment seat (49) being fixedly mounted on a middle plate of the hanging basket (3), and adjustment nuts (50) being screwed back on the screws (48) on both sides of the adjustment seat (49); The interior of the spiral damping member (43), the connecting pipe (45) and the liquid-setting cylinder (46) are filled with a damping fluid (44) consisting of hydraulic oil.

2. The lifting machine for assembling prefabricated bridge components according to claim 1, characterized in that: The baffles (5) are four and are distributed in an array at intervals on the four sides of the inner side of the hanging basket (3) to block the four sides of the prefabricated components (6), and there is a gap between the baffles (5) and the inner side of the hanging basket (3).

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