A bidirectional translation trolley for low-clearance structure projection under-pole mounting and dismounting

Abstract

The utility model relates to a kind of two-way translation trolley for low-clearance structure projection face lower support installation and disassembly, including bearing car body top plate and bearing car body web;Two pieces of bearing car body web are respectively fixed on the two sides below bearing car body top plate, and a set of pulley assembly is installed between the inner side of two pieces of bearing car body web, the outer side of two pieces of bearing car body web is fixed with the limiting component for preventing trolley from sliding, and limiting component is equipped with a set, and respectively corresponding with a set of pulley assembly distribution;The utility model has the beneficial effects that, compared with prior art, by setting pulley assembly and limiting component, part truss beam can be smoothly translated and can be removed using automobile crane;It has the advantages of convenient processing, flexible on-site adjustment and convenient low-clearance structure projection face lower support installation and disassembly, easy operation.

Description

Technical Field

[0001] This utility model belongs to the field of engineering construction technology, and in particular relates to a bidirectional translation trolley for installing and dismantling supports under the projection plane of low-headroom structures. Background Technology

[0002] Our company has developed a hybrid solid-web variable cross-section truss beam (hereinafter referred to as the truss beam) that spans an existing bridge structure as the main load-bearing beam of a cast-in-place prestressed concrete cap beam. This avoids the need for temporary piers on the old bridge, reduces construction risks, and solves the shortcomings of traditional support structures, such as small span capacity and weak load-bearing capacity. Because the maximum clearance of some truss beams below the projection plane of the cap beam structure is approximately 1 meter, direct lifting with a truck crane is not possible during dismantling. The truss beams must be moved out of the structural projection plane before being dismantled using a truck crane. Currently, there are no similar or identical truss beam dismantling technologies or cases. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a bidirectional translation trolley for installing and dismantling supports under the projection plane of low-clearance structures, so as to solve the problem of installing and dismantling truss beams under the projection plane of low-clearance structures.

[0004] The purpose of this utility model is achieved through the following technical solution: a bidirectional translation trolley for installing and dismantling supports under the projection plane of a low-headroom structure includes a supporting body top plate and a supporting body web plate; the supporting body web plate has two pieces and is fixed on both sides below the supporting body top plate; a set of pulley assemblies is installed between the inner sides of the two supporting body web plates; and limiting components for preventing the trolley from slipping are fixed on the outer sides of the two supporting body web plates. A set of limiting components is provided and is distributed corresponding to a set of pulley assemblies.

[0005] The beneficial effects of this utility model are as follows: Compared with the prior art, by setting pulley components and limiting components, some truss beams can be smoothly moved out and can be dismantled by truck crane; it has the advantages of convenient processing, flexible on-site adjustment, and convenient installation and dismantling of supports under the projection surface of low headroom structures, and convenient operation.

[0006] Preferably, the limiting components are located on both sides of the truss beam in the width direction, a set of pulley components are located on the upper surface of the truss beam, and the load-bearing vehicle roof plate abuts against the upper beam; through the distribution of the above structure, the truss beam can be smoothly removed during the translation process by relying on the tension and the sliding contact of the pulley components, and the setting of the limiting components not only has the effect of bearing the upper beam force, but also prevents the risk of the trolley slipping off.

[0007] Preferably, the pulley assembly includes a single-row roller bearing and rollers. The rollers are fixed between the inner sides of the two load-bearing body webs. The single-row roller bearings are mounted on the rollers, and three single-row roller bearings are mounted on each roller. With the above structure, the materials used are all readily available, which makes processing convenient, greatly reduces costs, and improves stability.

[0008] Preferably, the bottom of the load-bearing body web is "W" shaped, and the outer side wall of the single-row roller bearing is lower than the bottom of the load-bearing body web and higher than the bottom of the limiting component; because the height of the truss beams is different, the design of the bottom structure of the load-bearing body web can be applied to the translation of truss beams of different heights.

[0009] Preferably, the limiting component includes four support frames, each including a vertical frame and a diagonal frame. The vertical frame and the diagonal frame are fixed together by welding, and the diagonal frame is fixed to the outer side of the load-bearing body web by welding. It has the advantages of easy molding and adjustable support frame width, and is more suitable for truss beams of different widths.

[0010] Preferably, the welding point between the inclined frame and the load-bearing body web is the center point of the pulley assembly on the load-bearing body web; this ensures that during the translation of the truss beam, the stress points of the trolley are distributed on the aforementioned welding point and center point, resulting in better stability; at the same time, it is easier to calculate the distance between the bottom of the limiting assembly and the pulley assembly, making it easier for the trolley to be adapted to the translation of truss beams of different heights.

[0011] Preferably, the roof of the vehicle body is provided with two hook holes, and both hook holes are distributed on the sliding direction side of the trolley; this makes it easier for construction personnel to place the trolley onto the truss beam, and when necessary, it can be used to fix the sliding of the trolley during the translation of the truss beam, greatly increasing the safety performance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of the bidirectional translation trolley of this utility model.

[0013] Figure 2 This is a side view schematic diagram of the bidirectional translational trolley structure of this utility model.

[0014] Figure 3 This is a top view schematic diagram of the bidirectional translational trolley of this utility model.

[0015] Figure 4 This is a schematic diagram of the actual application structure of the bidirectional translation trolley of this utility model.

[0016] The labels in the attached diagram are as follows: 1. Load-bearing roof panel; 2. Load-bearing web panel; 3. Pulley assembly; 4. Limiting assembly; 5. Truss beam; 6. Upper beam; 7. Lower beam; 11. Hook hole; 31. Single-row roller bearing; 32. Roller; 41. Support frame; 41-1. Vertical frame; 41-2. Angled frame. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings: as shown in the drawings Figures 1 to 3 As shown, this utility model includes a roof plate 1 and a web plate 2. The web plate 2 has two parts and is fixed on both sides below the roof plate 1. A set of pulley assemblies 3 is installed between the inner sides of the two web plates 2. Limiting components 4 for preventing the car from slipping are fixed on the outer sides of the two web plates 2. A set of limiting components 4 is provided and is distributed corresponding to a set of pulley assemblies 3.

[0018] Both the roof plate 1 and the web plate 2 of the load-bearing vehicle body are made of 14mm thick Q235 steel plates. The steel plates are precisely laser-cut and then ground, with chamfered edges. The connection between the roof plate and the web plate is made by full penetration weld.

[0019] As attached Figure 4 As shown, the limiting component 4 is located on both sides of the truss beam 5 in the width direction, a set of pulley components 3 is located on the upper surface of the truss beam 5, and the load-bearing vehicle roof plate 1 abuts against the upper beam 6.

[0020] The pulley assembly 3 includes single-row roller bearings 31 and rollers 32. The rollers 32 are fixed between the inner sides of the two load-bearing body webs 2. The single-row roller bearings 31 are mounted on the rollers 32, and each roller 32 has three single-row roller bearings 31. The single-row roller bearings 31 are single-row cylindrical roller bearings: model N208ECP, with a basic rated dynamic load C=62KN per bearing. To reduce vibration and increase friction, the outer radial wall of the single-row roller bearing 31 is covered with a 2cm thick PU layer. Six bearings are installed on each trolley. The rollers 32 are made of Q235 round steel bars with a length of 17.2cm and a diameter of 39mm. After leveling, they are welded to the load-bearing body webs.

[0021] The bottom of the load-bearing body web 2 is "W" shaped, and the outer side wall of the single-row roller bearing 31 is lower than the bottom of the load-bearing body web 2 and higher than the bottom of the limiting component 4.

[0022] The limiting component 4 includes four support frames 41. Each support frame 41 includes a vertical frame 41-1 and an inclined frame 41-2. The vertical frame 41-1 and the inclined frame 41-2 are fixed together by welding. The inclined frame 41-2 is fixed to the outside of the load-bearing body web plate 2 by welding. It is formed by double-sided fillet welds with a weld leg height hf ≮ 8mm.

[0023] The welding point between the inclined frame 41-2 and the load-bearing body web 2 is the center point of the pulley assembly 3 on the load-bearing body web 2.

[0024] The roof plate 1 of the vehicle body is provided with two hook holes 11, and the two hook holes 11 are both distributed on the sliding direction side of the translation trolley.

[0025] The existing upper beam 6 and truss beam 5 are supported by sandboxes. Because the maximum clearance is about 1m, it is not possible to directly lift them with a truck crane during dismantling. The working principle of this utility model is as follows: First, the upper beam 6 is lifted by hydraulic jacks, and the trolley is lifted and placed on the truss beam 5 at the same time; then, the trolley is pushed to move between the upper beam 6 and the lower beam 7; finally, the sandbox is removed, the upper beam 6 is pressed down onto the roof plate 1 of the vehicle body, and the four support frames 41 are respectively supported on the lower beam 7. At this time, the truss beam 5 can be removed and lifted by external force.

[0026] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A bidirectional translation trolley for installing and removing supports under the projection plane of a low-headroom structure, comprising a supporting roof plate (1) and a supporting web plate (2); characterized in that: The load-bearing body web (2) is provided in two pieces and is fixed on both sides below the load-bearing body top plate (1). A set of pulley assemblies (3) is installed between the inner sides of the two load-bearing body webs (2). Limiting components (4) for preventing the car from slipping are fixed on the outer sides of the two load-bearing body webs (2). A set of limiting components (4) is provided and is distributed corresponding to a set of pulley assemblies (3).

2. The bidirectional translation trolley for installing and dismantling supports under the projection plane of a low-clearance structure according to claim 1, characterized in that: The limiting component (4) is located on both sides of the truss beam (5) in the width direction, a set of pulley components (3) is located on the upper surface of the truss beam (5), and the load-bearing vehicle roof plate (1) abuts against the upper beam (6).

3. The bidirectional translation trolley for installing and dismantling supports under the projection plane of a low-clearance structure according to claim 1, characterized in that: The pulley assembly (3) includes a single-row roller bearing (31) and a roller (32). The roller (32) is fixed between the inner sides of the two load-bearing body webs (2). The single-row roller bearing (31) is mounted on the roller (32), and three single-row roller bearings (31) are mounted on each roller (32).

4. The bidirectional translation trolley for installing and dismantling supports under the projection plane of a low-clearance structure according to claim 3, characterized in that: The bottom of the load-bearing body web (2) is "W" shaped, and the outer side wall of the single-row roller bearing (31) is lower than the bottom of the load-bearing body web (2) and higher than the bottom of the limiting component (4).

5. The bidirectional translation trolley for installing and dismantling supports under the projection plane of a low-headroom structure according to claim 1, characterized in that: The limiting component (4) includes four support frames (41), each support frame (41) including a vertical frame (41-1) and a diagonal frame (41-2). The vertical frame (41-1) and the diagonal frame (41-2) are fixed together by welding. The diagonal frame (41-2) is fixed to the outside of the load-bearing body web (2) by welding.

6. The bidirectional translation trolley for installing and dismantling supports under the projection plane of a low-headroom structure according to claim 5, characterized in that: The welding point between the inclined frame (41-2) and the load-bearing body web (2) is the center point of the pulley assembly (3) on the load-bearing body web (2).

7. The bidirectional translation trolley for installing and dismantling supports under the projection plane of a low-clearance structure according to claim 1, characterized in that: The top plate (1) of the vehicle body is provided with two hook holes (11), and the two hook holes (11) are both distributed on the sliding direction side of the translation trolley.

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