Narrow Space Bridge Hoisting Device

Abstract

The present invention discloses a hoisting device for bridges in narrow spaces, which relates to the technical field of material transportation devices and is used to transport construction materials on the bridge deck into the box girder. There is an expansion joint between adjacent box girders, including: an expansion plate, the expansion plate is in clearance fit with the expansion joint, and a plurality of elastic rope buckles are fixedly connected to the top of the expansion plate; a lifting assembly, and a plurality of the lifting assemblies are equidistantly distributed below the expansion plate. When the present invention transports the construction materials on the bridge deck into the box girder, the distance that the sliding plate extends out of the bearing plate can be adjusted according to the width of the expansion joint, so that the bearing plate and the sliding plate are in clearance fit with the expansion joint, thereby facilitating the bearing plate and the sliding plate to directly receive the construction materials. Compared with using ropes for hoisting, it can effectively avoid the collision between the construction materials and the box girder caused by the shaking of the ropes, and reduce the burden on the staff to control the hoisted construction materials in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of material transportation devices, and particularly to a hoisting device for bridges in narrow spaces. Background Art

[0002] After the completion of bridge construction, in order to ensure the normal operation of the bridge, regular inspections and repairs are required to reduce internal hidden dangers existing in the bridge due to long-term operation and improve the safety of the bridge. During the inspection and repair construction work inside the box girder, when transporting construction materials on the bridge deck to the inside of the box girder, usually a rope hoisting method such as a winch is used to put the construction materials into the box girder through the expansion joint between two adjacent box girders. However, since the construction materials hoisted by the rope are easily disturbed by external wind and shake, and the width of the expansion joint between two adjacent box girders is small, the shaking construction materials are extremely likely to collide with the box girder when passing through the expansion joint, which is likely to cause damage to the construction materials and the box girder, and requires real-time control by the staff, increasing the burden on the staff and increasing potential safety hazards during the work process of the staff; and only a single material can be loaded and unloaded during the material hoisting process, reducing the transfer efficiency of the material from the bridge deck to the inside of the box girder and reducing the work efficiency. Summary of the Invention

[0003] The narrow-space bridge hoisting device proposed by the present invention aims to solve the problem that when using a rope to hoist construction materials in the traditional technology, the materials are easily disturbed by external wind and shake and collide with the box girder, causing damage to the construction materials and the box girder.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A narrow-space bridge hoisting device for transporting construction materials on the bridge deck into the box girder, wherein there is an expansion joint between adjacent box girders, and the device includes:

[0006] An expansion plate, which is in clearance fit with the expansion joint, and a plurality of elastic rope buckles are fixedly connected to the top of the expansion plate; the construction materials are limited accordingly through the elastic rope buckles to avoid shaking of the construction materials.

[0007] Lifting components, a plurality of the lifting components are equidistantly distributed below the telescopic plate. The lifting component includes a connecting frame, a fixed arm, a movable arm, a rotating shaft and a base. The top of the connecting frame is connected to the bottom of the telescopic plate. The bottom of the connecting frame is rotatably connected to the fixed arm. One end of the fixed arm away from the connecting frame is rotatably connected to the base. The middle of the fixed arm is rotatably connected to the rotating shaft. The movable arm is rotatably connected to the rotating shaft. The top of the movable arm is rotatably connected to an upper slider. The upper slider is slidably connected to the bottom of the connecting frame. The bottom of the movable arm is rotatably connected to a lower slider. The lower slider is slidably connected to the base. The base is fixedly connected to the inner bottom of the box girder. The downward movement of the telescopic plate is completed through the lifting component to realize the operation of transporting construction materials up and down. When the telescopic plate moves upward to be flush with the top of the expansion joint, the transportation device on the bridge deck can be directly used to place the construction materials on the top of the telescopic plate, without the need for an additional lifting device, which is convenient and labor-saving.

[0008] Driving components, the driving components include a connecting block, a pull rod and a hydraulic cylinder. The connecting block is fixedly connected to the top of the lower slider. A plurality of the connecting blocks are fixedly connected to the same pull rod. A hydraulic cylinder is installed on the base. One end of the pull rod is fixedly connected to the output end of the hydraulic cylinder.

[0009] Preferably, the telescopic plate includes a bearing plate, a sliding plate and a fixing bolt. The bottom of the bearing plate is connected to the top of the connecting frame. A placement groove is formed on the top of the bearing plate for placing construction materials. The two sides of the bearing plate are symmetrically slidably connected with sliding plates. A plurality of bolt holes are formed on both the bottom of the bearing plate and the sliding plate. The plurality of bolt holes are arranged in a rectangular array along the sliding direction of the sliding plate. A same fixing bolt is threadedly connected in the bolt holes communicated between the bearing plate and the sliding plate. According to the telescopic width, the distance that the sliding plate extends out of the bearing plate is adjusted so that the bearing plate and the sliding plate are in clearance fit with the expansion joint, thereby simultaneously preventing the construction materials from directly falling from the gap between the bearing plate and the box girder when placing the construction materials, and improving the safety during the process of transporting materials.

[0010] Preferably, the bottom of the bearing plate is rotatably connected to the top of the connecting frame. One side of the top of the connecting frame is provided with, and one side of the bottom of the bearing plate is rotatably installed with a telescopic cylinder. The output end of the telescopic cylinder is rotatably connected to one side of the bottom of the bearing plate. When the output end of the telescopic cylinder extends, the telescopic plate is tilted to complete the unloading operation of the construction materials.

[0011] Preferably, a buffer component is connected to the base. The buffer component includes a fixed frame, an arc-shaped slideway, a buffer block and a blocking bar. The fixed frame is fixedly connected to one side of the base. The top of the fixed frame is fixedly connected to the arc-shaped slideway. The top of the arc-shaped slideway cooperates with the telescopic plate. A buffer block is slidably connected to the arc-shaped slideway. A blocking bar is fixedly connected to one side of the buffer block away from the arc-shaped slideway.

[0012] Preferably, arc-shaped rods are fixedly connected on both sides of the bottom of the arc-shaped slide, and rings are fixedly connected on both sides of the buffer block. The two rings are slidably connected to the two arc-shaped rods in a one-to-one manner. A buffer spring is sleeved on the arc-shaped rod, one end of the buffer spring is fixedly connected to the bottom of the arc-shaped slide, and the other end is fixedly connected to the ring. The buffer spring buffers the movement of the buffer block, thereby buffering the unloading of construction materials.

[0013] Preferably, electromagnets are installed at the top and bottom of the arc-shaped slideway, a small magnet is fixedly connected inside the buffer block, and the electromagnet and the small magnet have magnetic poles of the same name facing each other.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. When transporting construction materials on the bridge deck to the inside of the box girder, the present invention can adjust the distance that the sliding plate extends out of the pressure plate according to the width of the expansion joint, so that the pressure plate and the sliding plate are matched with the gap of the expansion joint, thereby facilitating the pressure plate and the sliding plate to directly receive the construction materials. Compared with using ropes for lifting, it can effectively avoid the collision of construction materials with the box girder due to the shaking of the ropes, and reduce the burden of the staff to control the hoisted construction materials in real time.

[0016] 2. The present invention starts the hydraulic cylinder in the drive assembly, and the output end of the hydraulic cylinder extends out to push the pull rod, which drives the movable arm to move through multiple connecting blocks and multiple lower sliding blocks, so that the bottom end of the movable arm approaches the bottom end of the fixed arm, thereby pushing the connecting frame to move upward until the telescopic plate on the connecting frame is flush with the top of the expansion joint. The transportation device on the bridge deck can be directly used to place the construction materials on the top of the telescopic plate without the need for additional lifting devices, which is convenient and labor-saving.

[0017] 2. After the construction materials are placed on the top of the telescopic plate, the elastic rope buckle can be used to limit the construction materials accordingly to further prevent the construction materials from shaking; at the same time, the driving assembly drives the lifting assembly to move the construction materials downward until the telescopic plate approaches the top of the arc slide, and the telescopic cylinder is started. The output end of the telescopic cylinder tilts the telescopic plate toward the arc slide, and the construction materials fall on the buffer block and the blocking fence. Under the buffering action of the buffer spring, the materials slowly fall to the bottom of the arc slide. During this process, the driving assembly and the lifting assembly can take over the construction materials again, thereby speeding up the material transportation speed and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the connection between the driving assembly and the lifting assembly of the present invention;

[0020] Figure 3 Schematic diagram of the working state of the present invention.

[0021] In the figure: 1 box girder, 2 expansion joint, 3 expansion plate, 4 bearing plate, 5 sliding plate, 6 fixing bolt, 7 placement groove, 8 lifting assembly, 9 connecting frame, 10 expansion cylinder, 11 fixed arm, 12 movable arm, 13 rotating shaft, 14 base, 15 driving assembly, 16 connecting block, 17 pull rod, 18 hydraulic cylinder, 19 buffer assembly, 20 fixing frame, 21 arc-shaped slideway, 22 buffer block, 23 blocking bar, 24 buffer spring, 25 arc-shaped rod. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] Refer to Figures 1-3 , a narrow-space bridge hoisting device, which is used to transport construction materials on the bridge deck into the box girder 1. An expansion joint 2 is provided between adjacent box girders 1, including:

[0024] An expansion plate 3, the expansion plate 3 is in clearance fit with the expansion joint 2, and a plurality of elastic rope buckles are fixedly connected to the top of the expansion plate 3; after the construction materials are placed on the top of the expansion plate 3, the construction materials can be correspondingly limited by the elastic rope buckles to prevent the construction materials from shaking.

[0025] The expansion plate 3 includes a bearing plate 4, a sliding plate 5 and a fixing bolt 6. The bottom of the bearing plate 4 is connected to the top of the connecting frame 9. A placement groove 7 is opened at the top of the bearing plate 4 for placing construction materials. The sliding plates 5 are symmetrically and slidably connected to both sides of the bearing plate 4. A plurality of bolt holes are opened on the bottom of the bearing plate 4 and the sliding plate 5. The plurality of bolt holes are arranged in a rectangular array along the sliding direction of the sliding plate 5. A fixing bolt 6 is threadedly connected to the bolt holes communicated on the bearing plate 4 and the sliding plate 5. According to the width of the expansion joint 2, the distance that the sliding plate 5 extends out of the bearing plate 4 is adjusted so that the bearing plate 4 and the sliding plate 5 are in clearance fit with the expansion joint 2, so as to facilitate the bearing plate 4 and the sliding plate 5 to directly receive the construction materials, and at the same time prevent the construction materials from directly falling from the gap between the bearing plate 4 and the box girder 1 when placing the construction materials.

[0026] Lifting components 8, multiple lifting components 8 are evenly distributed below the telescopic plate 3. The lifting component 8 includes a connecting frame 9, a fixed arm 11, a movable arm 12, a rotating shaft 13 and a base 14. The top of the connecting frame 9 is connected to the bottom of the telescopic plate 3. The bottom of the connecting frame 9 is rotatably connected to the fixed arm 11. One end of the fixed arm 11 away from the connecting frame 9 is rotatably connected to the base 14. The middle of the fixed arm 11 is rotatably connected to the rotating shaft 13. The movable arm 12 is rotatably connected to the rotating shaft 13. The top of the movable arm 12 is rotatably connected to an upper slider, and the upper slider is slidably connected to the bottom of the connecting frame 9. The bottom of the movable arm 12 is rotatably connected to a lower slider, and the lower slider is slidably connected to the base 14. The base 14 is fixedly connected to the inner bottom of the box girder 1. When the bottom end of the movable arm 12 approaches the bottom end of the fixed arm 11, the movable arm 12 and the fixed arm 11 close together in the vertical direction, thereby pushing the connecting frame 9 upward to complete the upward movement of the telescopic plate 3. When the movable arm 12 and the fixed arm 11 close together in the horizontal direction, it drives the connecting frame 9 to move downward to complete the downward movement of the telescopic plate 3, realizing the operation of transporting construction materials up and down. When the telescopic plate 3 moves upward to be flush with the top of the expansion joint 2, the transportation device on the bridge deck can be directly used to place the construction materials on the top of the telescopic plate 3 without an additional lifting device, which is convenient and labor-saving.

[0027] Drive component 15, the drive component 15 includes a connecting block 16, a pull rod 17 and a hydraulic cylinder 18. The connecting block 16 is fixedly connected to the top of the lower slider. The same pull rod 17 is fixedly connected to multiple connecting blocks 16. A hydraulic cylinder 18 is installed on the base 14. One end of the pull rod 17 is fixedly connected to the output end of the hydraulic cylinder 18. When the hydraulic cylinder 18 works, its output end drives the pull rod 17 to move. The pull rod 17 can synchronously pull the movable arms 12 in multiple lifting components 8 through multiple connecting blocks 16 and multiple lower sliders, so that multiple lifting components 8 move synchronously to complete the supply of power for the up and down movement of the telescopic plate 3.

[0028] The bottom of the bearing plate 4 is rotatably connected to the top of the connecting frame 9. One side of the top of the connecting frame 9 is provided with a telescopic cylinder 10 rotatably installed at one side of the bottom of the bearing plate 4. The output end of the telescopic cylinder 10 is rotatably connected to one side of the bottom of the bearing plate 4. When the output end of the telescopic cylinder 10 extends, the telescopic plate 3 is tilted to complete the unloading operation of the construction materials.

[0029] A buffer component 19 is connected to the base 14. The buffer component 19 includes a fixed frame 20, an arc-shaped slideway 21, a buffer block 22 and a blocking bar 23. The fixed frame 20 is fixedly connected to one side of the base 14. The top of the fixed frame 20 is fixedly connected to the arc-shaped slideway 21. The top of the arc-shaped slideway 21 cooperates with the telescopic plate 3. The buffer block 22 is slidably connected to the arc-shaped slideway 21. One side of the buffer block 22 away from the arc-shaped slideway 21 is fixedly connected to the blocking bar 23. The buffer block 22 and the blocking bar 23 receive the unloaded construction materials, and thus complete the further unloading operation of the construction materials along the arc-shaped slideway 21.

[0030] Arc rods 25 are fixedly connected on both sides of the bottom of the arc slide 21, and rings are fixedly connected on both sides of the buffer block 22. The two rings are slidably connected to the two arc rods 25 in a one-to-one manner. Buffer springs 24 are sleeved on the arc rods 25. One end of the buffer spring 24 is fixedly connected to the bottom of the arc slide 21, and the other end is fixedly connected to the ring. The buffer spring 24 buffers the movement of the buffer block 22, thereby buffering the unloading of construction materials.

[0031] Electromagnets are installed on the top and bottom of the arc slide 21, and a small magnet is fixedly connected in the buffer block 22. The same poles of the electromagnet and the small magnet are opposite to each other. Through the magnetic attraction of the electromagnet to the small magnet, when the construction materials move to the bottom of the arc slide 21 with the buffer block 22 and the blocking fence 23, the electromagnet at the bottom of the arc slide 21 is started to form a magnetic attraction to the small magnet in the buffer block 22, so as to avoid the buffer block 22 and the blocking fence 23 from moving upward quickly under the elastic force of the buffer spring 24 to cause impact and cause harm to the workers when the construction materials are moved from the buffer block 22 and the blocking fence 23; when the buffer block 22 moves upward, the electromagnet at the top of the arc slide 21 is started, and under the action of magnetic attraction, the buffer block 22 is quickly stabilized at the top of the arc slide 21, so as to avoid the buffer block 22 from vibrating up and down during the release of the elastic force of the buffer spring 24.

[0032] When transporting the construction materials on the bridge deck to the inside of the box beam 1, first adjust the distance of the sliding plate 5 extending out of the pressure plate 4 according to the width of the expansion joint 2 between the adjacent box beams 1. After the adjustment is completed, fix the sliding plate 5 on the pressure plate 4 by the fixing bolts 6, so that the pressure plate 4 and the sliding plate 5 can cooperate to receive the construction materials, which can effectively avoid the collision between the construction materials and the box beam 1 caused by the shaking of the rope when using the rope for lifting;

[0033] The hydraulic cylinder 18 in the driving assembly 15 is started, and the output end of the hydraulic cylinder 18 extends out to push the pull rod 17, and the pull rod 17 pushes the multiple lower sliders to move through the multiple connecting blocks 16, and the multiple lower sliders drive the movable arm 12 thereon to move, so that the bottom end of the movable arm 12 approaches the bottom end of the fixed arm 11, thereby pushing the connecting frame 9 on the top of the movable arm 12 and the fixed arm 11 to move upward, until the pressure plate 4 on the connecting frame 9 moves to be flush with the top of the expansion joint 2, and the construction materials can be directly placed on the top of the expansion plate 3 using the transportation device on the bridge deck, without the need for additional lifting devices, which is convenient and labor-saving;

[0034] After the construction materials are placed on the top of the telescopic plate 3, the elastic rope buckle can be used to limit the construction materials accordingly to prevent the construction materials from shaking. After the construction materials are limited, the hydraulic cylinder 18 is started. The output end of the hydraulic cylinder 18 contracts to pull the pull rod 17, and finally the connecting frame 9 drives the telescopic plate 3 to move downward until the telescopic plate 3 approaches the top of the arc-shaped slideway 21. At this time, the telescopic cylinder 10 is started, and the output end of the telescopic cylinder 10 extends, so that the telescopic plate 3 tilts towards the arc-shaped slideway 21, and the materials are poured onto the arc-shaped slideway 21. The buffer block 22 and the blocking bar 23 on the arc-shaped slideway 21 receive the falling materials. Under the action of the gravity of the materials themselves, the buffer block 22 is buffered by the elastic force of the buffer spring 24, so that the materials slowly fall to the bottom of the arc-shaped slideway 21. During this process, the driving assembly 15 and the lifting assembly 8 can receive the construction materials again, thereby accelerating the transfer speed of the materials;

[0035] At this time, the materials are unloaded into the box girder 1 again, and the transportation of the materials can be completed.

[0036] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. Narrow-space bridge hoisting device, which is used to transport construction materials on the bridge deck into the box girder (1), where there is an expansion joint (2) between adjacent box girders (1). The characteristics are as follows: It includes: Expansion plate (3), the expansion plate (3) is in clearance fit with the expansion joint (2), and a plurality of elastic rope buckles are fixedly connected to the top of the expansion plate (3); Lifting assembly (8), a plurality of the lifting assemblies (8) are equidistantly distributed below the expansion plate (3), and the lifting assembly (8) includes a connecting frame (9), a fixed arm (11), a movable arm (12), a rotating shaft (13) and a base (14). The top of the connecting frame (9) is connected to the bottom of the expansion plate (3), the bottom of the connecting frame (9) is rotatably connected to the fixed arm (11), one end of the fixed arm (11) far from the connecting frame (9) is rotatably connected to the base (14), the middle of the fixed arm (11) is rotatably connected to the rotating shaft (13), the rotating shaft (13) is rotatably connected to the movable arm (12), the top of the movable arm (12) is rotatably connected to an upper slider, the upper slider is slidably connected to the bottom of the connecting frame (9), the bottom of the movable arm (12) is rotatably connected to a lower slider, the lower slider is slidably connected to the base (14), and the base (14) is fixedly connected to the inner bottom of the box girder (1); Drive assembly (15), the drive assembly (15) includes a connecting block (16), a pull rod (17) and a hydraulic cylinder (18). The connecting block (16) is fixedly connected to the top of the lower slider, a plurality of the connecting blocks (16) are fixedly connected to the same pull rod (17), a hydraulic cylinder (18) is installed on the base (14), and one end of the pull rod (17) is fixedly connected to the output end of the hydraulic cylinder (18); The expansion plate (3) includes a bearing plate (4), a sliding plate (5) and a fixing bolt (6). The bottom of the bearing plate (4) is connected to the top of the connecting frame (9), a placement groove (7) is opened at the top of the bearing plate (4), and the placement groove (7) is used for placing construction materials. The two sides of the bearing plate (4) are symmetrically slidably connected with the sliding plate (5). A plurality of bolt holes are opened at the bottom of the bearing plate (4) and on the sliding plate (5), and the plurality of bolt holes are arranged in a rectangular array along the sliding direction of the sliding plate (5). The bolt holes communicated between the bearing plate (4) and the sliding plate (5) are internally threaded with the same fixing bolt (6); A buffer assembly (19) is connected to the base (14), and the buffer assembly (19) includes a fixed frame (20), an arc-shaped slideway (21), a buffer block (22) and a blocking bar (23). The fixed frame (20) is fixedly connected to one side of the base (14), the top of the fixed frame (20) is fixedly connected to the arc-shaped slideway (21), the top of the arc-shaped slideway (21) cooperates with the expansion plate (3), the buffer block (22) is slidably connected to the arc-shaped slideway (21), and a blocking bar (23) is fixedly connected to the side of the buffer block (22) far from the arc-shaped slideway (21).

2. The narrow-space bridge hoisting device according to claim 1, The characteristics are as follows: Among them: ​ The bottom of the bearing plate (4) is rotatably connected to the top of the connecting frame (9). One side of the bottom of the bearing plate (4) is rotatably installed with a telescopic cylinder (10), and the output end of the telescopic cylinder (10) is rotatably connected to one side of the bottom of the bearing plate (4).

3. The narrow-space bridge hoisting device according to claim 2, characterized in that wherein: Both sides of the bottom of the arc-shaped slideway (21) are fixedly connected with arc-shaped rods (25). Both sides of the buffer block (22) are fixedly connected with collar rings, and the two collar rings are slidably connected to the two arc-shaped rods (25) in a one-to-one correspondence. A buffer spring (24) is sleeved on the arc-shaped rod (25), one end of the buffer spring (24) is fixedly connected to the bottom of the arc-shaped slideway (21), and the other end is fixedly connected to the collar ring.

4. The narrow-space bridge hoisting device according to claim 3, characterized in that wherein: Electromagnets are installed at both the top and the bottom of the arc-shaped slideway (21). A small magnet is fixedly connected inside the buffer block (22), and the same-named magnetic poles of the electromagnet and the small magnet face each other.

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