Bridge deck crane

Abstract

The utility model discloses a bridge deck crane, which relates to the technical field of bridge construction equipment, and comprises two groups of bases, the bases are symmetrically connected to the front two sides of the top end of a bridge deck in a sliding manner, the top ends of the bases are fixedly provided with a main beam through supporting beams, and spacing adjusting mechanisms are symmetrically connected between the two groups of bases; the distance between the front base and the rear base is adjusted through the distance adjusting mechanism, meanwhile, the front main beam and the rear main beam are driven to adjust the distance, and therefore the width of the bridge deck crane can be adjusted within a certain range, the bridge deck crane can be suitable for hoisting construction of bridge decks of different width specifications, applicability is high, and cost is low. The longitudinal adjusting mechanism drives the second electric chain hoist to longitudinally move back and forth at the bottom end of the driving box, so that the construction hanging basket hung below the second electric chain hoist can be driven to move back and forth, the distance between the construction hanging basket and the bridge section can be conveniently hung according to actual construction requirements, convenience is brought to construction operation of workers on the construction hanging basket, and the construction efficiency is improved. The use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction equipment, in particular to a bridge deck crane. Background Art

[0002] At present, the bridge body adopts the construction method of factory segment manufacturing and on-site splicing of factory plate units, and the on-site bridge segment is hoisted as a whole, which requires the use of a bridge crane. A bridge crane is a heavy lifting equipment used in bridge construction. It can lift and move large components such as steel trusses or concrete box girder segments during bridge construction. The use of bridge cranes helps to improve the efficiency and quality of bridge construction, reduce the risks of high-altitude operations, and shorten the construction period to a certain extent.

[0003] For example, the utility model patent with application number 202220404725.7 discloses a new type of bridge deck crane, including a lower crossbeam, a crossarm beam, a support rod, a lower supporting beam, a main beam and a connecting beam; the lower crossbeam is symmetrically distributed and crossarm beams are fixed at both ends, a plurality of anti-tilt and anti-roll side wheels are arranged at the bottom end of the crossarm beam, anti-tilt safety side hooks are arranged on both sides of the bottom end of the crossarm beam, and support rods are arranged on both sides of the upper end of the crossarm beam.

[0004] Based on the findings in the prior art, most of the existing bridge cranes have a single structure, which is not convenient for adjusting the distance between adjacent main beams according to the width of the bridge deck, resulting in the inability to be applied to the lifting construction of bridge decks of different widths. The applicability is not high, and the construction basket of the existing bridge crane only has a single lifting function, but does not have the function of front and rear longitudinal displacement, so that the distance between the basket and the bridge cannot be adjusted according to actual construction needs, which brings inconvenience to the construction operations of the workers on the basket and is inconvenient to use. Therefore, the utility model proposes a bridge crane to solve the problems existing in the prior art. Utility Model Content

[0005] In view of the above problems, the purpose of the utility model is to propose a bridge crane to solve the problem that the existing bridge crane is not convenient for adjusting the distance between adjacent main beams according to the width of the bridge deck, resulting in the inability to be suitable for hoisting construction of bridge decks of different widths, and the construction basket does not have the function of front and rear longitudinal displacement, so the distance between the basket and the bridge cannot be adjusted according to actual construction needs.

[0006] In order to achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a bridge crane, including a base, the base is provided with two groups and symmetrically slidably connected to the front two sides of the top of the bridge deck, a main beam is fixed to the top of the base through a supporting beam, a spacing adjustment mechanism is symmetrically connected between the two groups of the bases, a limiting mechanism is symmetrically connected between the two groups of the main beams, a moving trolley is slidably connected to the top of the two groups of main beams, the bottom end of the mobile trolley is connected to a windproof anchor plate through a first electric chain hoist, a bridge section is fixed to the bottom end of the windproof anchor plate, a driving box is symmetrically provided at the bottom end of the main beam, a second electric chain hoist driven by a longitudinal adjustment mechanism is slidably provided at the bottom of the driving box, and a construction hanging basket is commonly suspended below the two groups of the second electric chain hoists.

[0007] A further improvement is that the spacing adjustment mechanism includes a threaded tube and a threaded rod threadedly connected to the threaded tube, the end of the threaded tube away from the threaded rod is rotatably connected to a base away from the threaded rod through a bearing, and the end of the threaded rod located outside the threaded tube is fixedly connected to the base away from the threaded tube.

[0008] A further improvement is that the limiting mechanism includes a limiting tube located between the two groups of main beams and a limiting rod sliding through both sides of the limiting tube, a stopper is fixed to one end of the limiting rod located inside the limiting tube, and a baffle welded to the inner side of the main beam is fixed to one end of the limiting rod located outside the limiting tube.

[0009] A further improvement is that anti-tilt and anti-roll side wheels are equidistantly fixed to the bottom end of the base, and an anti-tilt safety side hook adapted to the bridge deck is fixed to the side of the bottom end of the base away from the anti-tilt and anti-roll side wheels, and the lower part of the anti-tilt safety side hook is inclined and slides in contact with the side wall of the bridge deck.

[0010] A further improvement is that the longitudinal adjustment mechanism includes a motor fixed to the outer wall of the drive box and a screw rod rotatably connected to the inside of the drive box and driven to rotate by the motor, a threaded block is threadedly sleeved on the screw rod, and the bottom end of the threaded block slides through the bottom end of the drive box and is fixedly connected to the second electric chain hoist.

[0011] A further improvement is that driving wheels are installed around the bottom of the mobile trolley, and limiting plates adapted to the driving wheels are fixed on both sides of the top of the main beam, and the upper end height of the limiting plates is greater than the upper end height of the driving wheels.

[0012] A further improvement is that the support beam includes a support vertical rod symmetrically fixed to the top of the base and a bracket fixed to the top of the support vertical rod, the bracket is fixed to the bottom end of the main beam, a support diagonal rod is fixed between the support vertical rod and the bracket, and a support cross rod is fixed between the support diagonal rod and the support vertical rod.

[0013] The beneficial effects of the utility model are as follows: the utility model includes a base, and the distance between the front and rear two groups of bases is adjusted by a spacing adjustment mechanism, while driving the front and rear two groups of main beams to adjust the spacing, so that the bridge crane can adjust the width within a certain range, and thus can be suitable for hoisting construction of bridge decks of different widths, and has high applicability. The longitudinal adjustment mechanism drives the second electric chain hoist to move longitudinally forward and backward at the bottom of the driving box, which can drive the construction hanging basket suspended under the second electric chain hoist to move forward and backward, thereby facilitating the distance between the construction hanging basket and the bridge section according to actual construction needs, bringing convenience to the construction operation of the workers on the construction hanging basket, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the utility model;

[0015] Figure 2 It is a side view of the utility model;

[0016] Figure 3 It is a side sectional view of the drive box of the utility model;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the spacing adjustment mechanism of the utility model;

[0018] Figure 5 It is a construction schematic diagram of the utility model.

[0019] Among them: 1. Base; 2. Support beam; 3. Main beam; 4. Mobile trolley; 5. First electric chain hoist; 6. Windproof anchor plate; 7. Drive box; 8. Second electric chain hoist; 9. Construction hanging basket; 10. Threaded pipe; 11. Threaded rod; 12. Limiting pipe; 13. Limiting rod; 14. Block; 15. Baffle; 16. Anti-tilt and anti-roll side wheels; 17. Anti-tilt safety side hook; 18. Motor; 19. Screw; 20. Threaded block; 21. Drive wheel; 22. Limiting plate; 201. Support vertical rod; 202. Bracket; 203. Support diagonal rod; 204. Support horizontal rod. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0021] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the present embodiment provides a bridge crane, comprising bases 1 symmetrically distributed on the front and rear sides of the top of the bridge deck to be constructed. During construction, the bases 1 are anchored at the top of the bridge deck to be constructed. When the anchoring is released, the bases 1 can slide on the top of the bridge deck to be constructed. A support beam 2 is fixed to the top of each group of bases 1 by bolts, and a main beam 3 is fixed to the top of the support beam 2 by bolts. The two groups of bases 1 are connected by a spacing adjustment mechanism that is symmetrically distributed on the left and right. The spacing between the front and rear groups of bases 1 can be adjusted by the spacing adjustment mechanism to meet the needs of bridge decks of different widths. The two groups of main beams 3 are symmetrically connected with a limiting mechanism, which plays a limiting role between the two groups of main beams 3 to prevent the two groups of main beams 3 from being separated too much and offset. The distance between the front and rear groups of bases 1 is adjusted by the spacing adjustment mechanism, and the front and rear groups of main beams 3 are driven to adjust the spacing at the same time, so that the bridge crane can be adjusted in width within a certain range, and can be suitable for hoisting construction of bridge decks of different widths. The tops of the two groups of main beams 3 are connected together. A mobile trolley 4 is slidably connected, and the mobile trolley 4 can slide left and right at the top of the main beam 3. A first electric chain hoist 5 is fixed to the bottom of the mobile trolley 4 by bolts. The first electric chain hoist 5 is suspended by a chain with a windproof anchor connecting plate 6 for fixing the bridge section to be installed. The bottom end of the windproof anchor connecting plate 6 is anchored and fixed with the bridge section to be installed. Two groups of drive boxes 7 symmetrically distributed on the left and right are fixed to the bottom of the main beam 3 by bolts. A second electric chain hoist 8 is slidably provided at the bottom end of the drive box 7, and the second electric chain hoist 8 is driven and displaced longitudinally forward and backward by a longitudinal adjustment mechanism. A construction hanging basket 9 for accommodating construction workers is jointly suspended by a chain below the two groups of second electric chain hoists 8 symmetrically distributed on the left and right. The second electric chain hoist 8 is driven by the longitudinal adjustment mechanism to displace longitudinally forward and backward at the bottom end of the drive box 7, which can drive the construction hanging basket 9 suspended below the second electric chain hoist 8 to move forward and backward, thereby facilitating the distance between the construction hanging basket 9 and the bridge section to be hoisted according to actual construction needs.

[0022] The spacing adjustment mechanism includes a threaded tube 10 and a threaded rod 11, wherein the threaded rod 11 is threadedly connected in the threaded tube 10, and one end of the threaded tube 10 away from the threaded rod 11 is rotatably connected to the base 1 located on the front side through a bearing, and one end of the threaded rod 11 located outside the threaded tube 10 is fixedly connected to the base 1 located on the rear side through a bolt, and the extension distance of the threaded rod 11 in the threaded tube 10 is adjusted by rotating the threaded tube 10, thereby realizing the spacing adjustment between the two groups of bases 1.

[0023] The limiting mechanism includes a limiting tube 12 and a limiting rod 13, wherein the limiting tube 12 is located between the front and rear groups of main beams 3, and the limiting rod 13 slides through the left and right side walls of the limiting tube 12. A stopper 14 is fixed to one end of the limiting rod 13 located in the limiting tube 12 to play a limiting and blocking role to prevent the limiting rod 13 from escaping from the limiting tube 12. A baffle 15 is fixed to one end of the limiting rod 13 located outside the limiting tube 12 by bolts. The baffle 15 is welded and fixed to the inner side of the main beam 3. The limiting tube 12 limits the limiting rod 13 to prevent the main beam 3 from deflecting.

[0024] The bottom end of the base 1 is fixed with equidistantly distributed anti-tilt and anti-roll side wheels 16 by bolts to realize the sliding displacement of the base 1 on the bridge deck. The side of the bottom end of the base 1 away from the anti-tilt and anti-roll side wheels 16 is fixed with an anti-tilt safety side hook 17 adapted to the bridge deck. The lower part of the anti-tilt safety side hook 17 is designed to be inclined and slides in contact with the side wall of the bridge deck, playing a limiting role, so that the bridge crane is more stable when moving on the bridge deck.

[0025] The longitudinal adjustment mechanism comprises a motor 18 and a screw rod 19. The starting motor 18 is fixed to the outer wall of the drive box 7 by bolts. The output end of the motor 18 passes through the drive box 7 through a bearing and is connected to the screw rod 19, so that the screw rod 19 can rotate in the drive box 7. A threaded block 20 is threadedly sleeved on the screw rod 19. The bottom end of the threaded block 20 slides through the bottom end of the drive box 7 and is fixedly connected to the second electric chain hoist 8 by bolts. A through groove adapted to the threaded block 20 is provided at the bottom end of the drive box 7. The motor 18 drives the screw rod 19 to rotate, so that the threaded block 20 threadedly sleeved on the screw rod 19 drives the second electric chain hoist 8 to move forward and backward, thereby driving the construction hanging basket 9 suspended below the second electric chain hoist 8 to move.

[0026] Driving wheels 21 driven by a servo motor are installed around the bottom of the mobile trolley 4. The servo motor drives the driving wheels 21 to rotate and drive the mobile trolley 4 to move. Limiting plates 22 adapted to the driving wheels 21 are fixed by bolts on both sides of the top of the main beam 3. The upper end height of the limiting plate 22 is greater than the upper end height of the driving wheel 21, which limits the driving wheel 21 and prevents the mobile trolley 4 from falling off.

[0027] The support beam 2 includes a support vertical rod 201 and a bracket 202, wherein the support vertical rod 201 is symmetrically fixed to the left and right sides of the top of the base 1 by bolts, the bracket 202 is fixed to the top of the support vertical rod 201 by bolts, and the top of the bracket 202 is fixed to the bottom of the main beam 3 by bolts, a support diagonal rod 203 is fixed between the support vertical rod 201 and the bracket 202, and a support cross bar 204 is fixed between the support diagonal rod 203 and the support vertical rod 201. The support vertical rod 201, the bracket 202, the support diagonal rod 203 and the support cross bar 204 together constitute the support beam 2, which stably supports the main beam 3.

[0028] During the bridge deck construction process, the base 1 is first anchored on the installed bridge section so that the bridge deck crane is installed and fixed on the bridge deck. If it overturns during use, the bridge section to be spliced ​​and installed is then lifted to the bottom of the main beam 3 by the car crane, and the mobile trolley 4 is started to move in the direction of the bridge section to be spliced ​​and installed, until the windproof anchor plate 6 is driven to move above the bridge section to be spliced ​​and installed. At this time, the first electric chain hoist 5 is started to drive the windproof anchor plate 6 to descend, and the windproof anchor plate 6 is anchored on the upper surface of the bridge section to be spliced ​​and installed, and then the first electric chain hoist 5 is started to drive the windproof anchor plate 6 to lift the bridge section to be spliced ​​and installed. Then, the mobile trolley 4 is started to drive the windproof anchor connecting plate 6 to move to the end of the bridge section that has been installed. After it is in place, the first electric chain hoist 5 is started to drive the windproof anchor connecting plate 6 to descend until the bridge section to be spliced ​​and installed is docked with the bridge section that has been installed. Then the second electric chain hoist 8 is started to drive the construction hanging basket 9 to descend to the bridge section docking point. The workers in the construction hanging basket 9 first use temporary connecting parts to tighten and spot weld the connection, detect the linear shape of the bridge body, and after meeting the linear monitoring value, weld according to the welding process. After welding and fixing, the anchor state of the base 1 is released, and the bridge deck crane is pushed to the next bridge end. The above steps are repeated until the construction of all bridge sections is completed;

[0029] During the bridge deck construction process, when the distance between the front and rear two groups of bases 1 needs to be adjusted according to the width of the bridge deck, the distance between the front and rear two groups of bases 1 is adjusted by the distance adjustment mechanism, and the front and rear two groups of main beams 3 are driven to adjust the distance until the width of the bridge deck to be constructed is met, so that the bridge deck crane can be moved on bridge decks of different widths for construction;

[0030] When it is necessary to adjust the distance between the construction hanging basket 9 and the bridge section, the longitudinal adjustment mechanism is started to drive the second electric chain hoist 8 to move longitudinally forward and backward at the bottom of the driving box 7, which can drive the construction hanging basket 9 suspended below the second electric chain hoist 8 to move forward and backward until the distance between the construction hanging basket 9 and the bridge section meets the actual construction needs.

[0031] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A bridge crane, comprising a base (1), characterized in that: The base (1) is provided with two groups and is symmetrically slidably connected to the front two sides of the top of the bridge deck. The top of the base (1) is fixed with a main beam (3) through a support beam (2). A spacing adjustment mechanism is symmetrically connected between the two groups of the base (1). A limit mechanism is symmetrically connected between the two groups of the main beams (3). The tops of the two groups of the main beams (3) are slidably connected with a moving trolley (4). The bottom of the moving trolley (4) is suspended with a windproof anchor plate (6) through a first electric chain hoist (5). A bridge section is fixed to the bottom of the windproof anchor plate (6). The bottom of the main beam (3) is symmetrically provided with a driving box (7). The bottom of the driving box (7) is slidably provided with a second electric chain hoist (8) driven to move by a longitudinal adjustment mechanism. A construction hanging basket (9) is commonly suspended below the two groups of the second electric chain hoists (8).

2. A bridge crane according to claim 1, characterized in that: The spacing adjustment mechanism comprises a threaded tube (10) and a threaded rod (11) threadedly connected to the threaded tube (10); an end of the threaded tube (10) away from the threaded rod (11) is rotatably connected to a base (1) away from the threaded rod (11) via a bearing; an end of the threaded rod (11) located outside the threaded tube (10) is fixedly connected to the base (1) away from the threaded tube (10).

3. A bridge crane according to claim 1, characterized in that: The limiting mechanism comprises a limiting tube (12) located between two groups of main beams (3) and a limiting rod (13) slidingly passing through both sides of the limiting tube (12); a stopper (14) is fixed to one end of the limiting rod (13) located inside the limiting tube (12); and a stopper (15) welded to the inner side of the main beam (3) is fixed to one end of the limiting rod (13) located outside the limiting tube (12).

4. A bridge crane according to claim 1, characterized in that: Anti-tilt and anti-roll side wheels (16) are fixed at equal distances on the bottom end of the base (1); an anti-tilt safety side hook (17) adapted to the bridge deck is fixed on the side of the bottom end of the base (1) away from the anti-tilt and anti-roll side wheels (16); the lower part of the anti-tilt safety side hook (17) is designed to be inclined and slidably fits with the side wall of the bridge deck.

5. A bridge crane according to claim 1, characterized in that: The longitudinal adjustment mechanism comprises a motor (18) fixed to the outer wall of the driving box (7) and a screw rod (19) rotatably connected to the inside of the driving box (7) and driven to rotate by the motor (18); a threaded block (20) is threadedly sleeved on the screw rod (19); the bottom end of the threaded block (20) slides through the bottom end of the driving box (7) and is fixedly connected to the second electric chain hoist (8).

6. A bridge crane according to claim 1, characterized in that: Driving wheels (21) are installed around the bottom of the movable vehicle (4), and limiting plates (22) adapted to the driving wheels (21) are fixed on both sides of the top of the main beam (3), and the upper end height of the limiting plates (22) is greater than the upper end height of the driving wheels (21).

7. A bridge crane according to claim 1, characterized in that: The support beam (2) comprises a support vertical rod (201) symmetrically fixed to the top of the base (1) and a bracket (202) fixed to the top of the support vertical rod (201); the bracket (202) is fixed to the bottom end of the main beam (3); a support diagonal rod (203) is fixed between the support vertical rod (201) and the bracket (202); and a support cross rod (204) is fixed between the support diagonal rod (203) and the support vertical rod (201).

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