Stable hoisting equipment for bridge construction

Abstract

The invention discloses stable lifting equipment for bridge construction, and relates to the technical field of bridge construction, the stable lifting equipment comprises a lifting table, a crown block and an arc-shaped beam, the crown block is slidably connected to the lifting table, and the arc-shaped beam is mounted at the bottom of the crown block; a crown block on a lifting platform is used for adjusting the height of an arc-shaped beam, the position between the arc-shaped beam and a cross beam is changed, folding clamping arms are automatically controlled to clamp the two sides of a bridge construction workpiece, operation is flexible, meanwhile, according to the width of the bridge construction workpiece, a clamping block at the bottom of an upper locking column is matched to rotate in a positioning groove, and separation of a sliding column and a positioning cylinder is completed; the folding clamping arms are further tightened in the ascending and lifting process of the arc-shaped beam, clamping and lifting of small-size workpieces are achieved, the application range is wide, the position of the lifting table on the arc-shaped beam is adjusted according to the balance weight of the lifted workpieces, and the overall lifting stability of the workpieces is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge construction, in particular to a stable hoisting equipment for bridge construction. BACKGROUND

[0002] The workpieces in bridge construction are often obtained by hoisting equipment. Common hoisting equipment includes cranes, gantry cranes and tower cranes. According to the structure of the bridge, the weight and size of the components, the construction site conditions and other factors, a detailed hoisting construction plan is developed, including hoisting sequence, hoisting path, equipment selection, etc. At the same time, the bridge components to be hoisted are comprehensively inspected, including the size, appearance quality, location of embedded parts, etc. of the components to ensure that the components meet the design and hoisting requirements. According to the shape and center of gravity of the component, the appropriate binding points and binding methods are selected to ensure that the component is balanced and stable during hoisting. When lifting, the component should be lifted slowly and smoothly to avoid sudden acceleration or deceleration and prevent the component from swinging too much. When the component is falling, the falling speed should be controlled to ensure that the component is accurately positioned. When hoisting large or special components, multiple hoisting equipment may be required to work together. According to the patent text with publication number CN112320563A, the truss is directly connected to the hoisting equipment, which is changed to a half-enclosed clamping hoisting by setting a top plate and a side plate to improve the overall truss hoisting stability. However, when hoisting the entire truss, multiple plate components are required to contact and hoist to maintain the balance of the frame. When the hoisting force is uneven, the angle cannot be automatically adjusted, and long-term work can cause deformation and damage to the hoisting equipment. Moreover, the overall hoisting workpiece type is low and the application scope is small. Therefore, we propose a stable hoisting equipment for bridge construction. SUMMARY

[0003] The purpose of the present application is to provide a stable hoisting equipment for bridge construction to solve the problems raised in the background art.

[0004] To achieve the above purpose, the present application provides the following technical solution: a stable hoisting equipment for bridge construction, comprising a hoisting platform, the hoisting platform is slidably connected with the overhead traveling crane, the overhead traveling crane is installed at the bottom of the arc-shaped beam, the arc-shaped beam is symmetrically and movably connected with the folding clamping arm one and the folding clamping arm two on both sides of the bottom, the folding clamping arm one and the folding clamping arm two on the same side are rotatably connected through a rotating shaft, and a single cross beam is rotatably connected on the rotating shaft of the two, the two sides of the cross beam are rotatably connected with the arc-shaped beam through folding rods; The cross beam is provided with a through locking mechanism, which comprises a sliding column and a threaded column, the sliding column is vertically and slidingly connected to the cross beam, a positioning groove is formed in the top of the sliding column, the threaded column is threadedly connected to the inner wall of the sliding column cavity, a channel is formed in the outer wall of the sliding column, the channel is communicated with the sliding column cavity, a rotating sleeve is movably connected to the outer wall of the sliding column, the inner wall of the rotating sleeve penetrates through the channel and is slidingly sleeved with the threaded column, and an expansion disc is slidingly connected to the sliding column cavity and located on the threaded column; Limiting blocks are symmetrically connected to the sliding column cavity and located on both sides of the expansion disc, cavities and columns are arranged on the limiting blocks, the column walls of the limiting blocks penetrate through the cavities, and springs are sleeved in the cavities.

[0005] Further, tooth grooves are uniformly formed in the top of the arc-shaped beam, a hanging table is movably connected to the arc-shaped beam, limiting teeth are movably connected to the inner wall of the hanging table, and the limiting teeth are engaged with the tooth grooves.

[0006] Further, a positioning bolt is slidingly connected to the side of the hanging table, one side of the positioning bolt penetrates through the hanging table and is locked by a nut, and toothed jaws are fixedly connected to the inner wall of the hanging table and located on the opposite sides of the limiting teeth and the positioning bolt, and the toothed jaws on both sides are engaged and abutted.

[0007] Further, a positioning cylinder is fixed to the bottom of the arc-shaped beam, a supporting cylinder is fixedly connected to the inner wall of the bottom of the positioning cylinder, a steering cylinder is fixedly connected to the inner wall of the positioning cylinder and located on the top of the supporting cylinder, a lock column is movably clamped in the positioning cylinder and located on the supporting cylinder, and one end of the lock column penetrates through the positioning cylinder and is fixedly connected with a clamping block.

[0008] Further, the end of the lock column fixedly connected with the clamping block corresponds to the positioning groove in the top of the sliding column, and the groove opening of the supporting cylinder and the steering cylinder are distributed in a staggered manner.

[0009] The use method of the stable type hoisting equipment for bridge construction is as follows: The I-shaped steel is clamped; The crown block is moved to the center position of the I-shaped steel, the arc-shaped beam is lowered so that the sliding column abuts against the surface of the I-shaped steel, the lock column in the positioning groove is lifted to contact the steering cylinder in the positioning cylinder during the lifting of the sliding column, the lock column is rotated by 90 degrees, then the arc-shaped beam is lifted, the folding clamping arm one and the folding clamping arm two begin to close, and the clamping and lifting of the I-shaped steel on both sides are completed; The cable roller is clamped; The side sliding column of the cross beam is aligned with the center hole of the cable roller, when the sliding column completely penetrates, the end rotating sleeve of the sliding column is rotated, the inner threaded column is driven to rotate, the expansion disc is rotated, and the limiting blocks on both sides are pushed out, and the locking of the cable roller is completed; Combined hoisting; Lock the cable roller first, then move the cross beam with the cable roller to the bottom of the I-beam, use the cable roller to press the I-beam, and complete clamping by synchronously closing the folding clamp arm when lifting.

[0010] Compared with the prior art, the beneficial effects of the present application are: 1、 In the present application, the height of the arc-shaped beam is adjusted by the overhead traveling crane on the lifting platform, the position between the arc-shaped beam and the cross beam is changed, the folding clamp arm is automatically controlled to complete clamping on both sides of the bridge construction workpiece, the operation is flexible, and according to the width of the bridge construction workpiece, the bottom clamping block of the upper locking column is rotated in the positioning groove, the disengagement of the slide column and the positioning cylinder is completed, the folding clamp arm is further tightened during the lifting of the arc-shaped beam, the clamping and lifting of small-size workpieces are realized, the application range is wide, and the position of the arc-shaped beam on the lifting platform is adjusted according to the counterweight of the lifting workpiece, the overall stability of the workpiece lifting is improved. 2、 In the present application, the slide column is matched with the center shaft of the cable roller, the rotating sleeve is rotated during the penetration process, the rotating expansion disc is used to push the two side limit blocks, the overall radius of the outer wall of the slide column is increased, the through-connected cable roller is supported, and subsequent lifting and lifting work can be realized, the entire cable roller is lifted, and the folding clamp arm can be used for workpiece clamping when the I-beam is contacted and placed. Compared with single workpiece lifting, the combination of folding clamp arm and slide column workpiece is obtained, the workpieces are pressed during lifting, the overall stability of multi-workpiece lifting is improved, and compared with traditional binding type combination lifting, the overall lifting stability is reduced with the increase of workpiece types and quality. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a schematic diagram of the lifting platform installation structure at the bottom of the overhead traveling crane of the present application. Figure 2 It is a schematic diagram of the overall structure of the stable type lifting equipment used in bridge construction of the present application. Figure 3 It is a schematic diagram of the installation structure of the transfixion locking mechanism on the cross beam of the present application. Figure 4 It is a schematic diagram of the main view structure of the stable type lifting equipment used in bridge construction of the present application. Figure 5 It is a schematic diagram of the side tooth meshing structure of the positioning pin and the limiting tooth of the present application. Figure 6 It is a schematic diagram of the side view structure of the stable type lifting equipment used in bridge construction of the present application. Figure 7 It is a schematic diagram of the abutting structure of the locking column and the supporting cylinder in the positioning cylinder of the present application. Figure 8 It is a schematic diagram of the symmetrical installation structure of the limiting block in the slide column groove of the present application. Figure 9 It is a schematic diagram of the slide column cross-sectional structure of the present application. Figure 10 Figure 1 is a schematic diagram of the combination of the I-shaped steel and cable roller for the folding clamping arm of the present application.

[0012] Figure 1 is a schematic diagram of the combination of the I-shaped steel and cable roller for the folding clamping arm of the present application. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0014] Please refer to Figures 1-10 , the present application provides a technical solution: Embodiment 1: a stable type lifting equipment used in bridge construction, as shown in Figure 1 , the present application provides a technical solution: Embodiment 1: a stable type lifting equipment used in bridge construction, as shown in Meanwhile, the tooth groove 4 is additionally installed on the outer side of the arc-shaped beam 3, which cooperates with the rolling connection of the lifting platform 5 to realize the deflection of the whole folding clamping arm 8 and folding clamping arm 9 for clamping the workpiece, and to balance the damage of the equipment caused by the uneven weight of the workpiece during lifting. For the deflection angle control of the arc-shaped beam 3 on the lifting platform 5, as shown in Figure 5 , the limiting teeth 6 installed on the inner side of the lifting platform 5 can rotate freely when the positioning bolt 7 is not locked, and when the positioning bolt 7 is locked with the lifting platform 5, the positioning bolt 7 and the limiting teeth 6 on the opposite surface are engaged to limit the normal rotation of the limiting teeth 6. When the positioning bolt 7 is locked, the limiting teeth 6 and the tooth groove 4 on the arc-shaped beam 3 are in abutment and locked to limit the rolling of the whole arc-shaped beam 3 on the inner side of the lifting platform 5. At the same time, when the relevant cable rollers are hoisted, the through-locking mechanism 15 installed on the crossbeam 14 is used to cooperate with the deflection angle adjustment of the entire curved beam 3 on the hanging platform 5, so that the cable rollers can be placed and clamped in different postures. Specifically, when the center axis of the cable roller faces upward and penetrates vertically, when the center axis of the cable roller is horizontal, the through-locking mechanism 15 is installed horizontally by rotating the curved beam 3, which is more convenient to use. With a single lifting device, different bridge construction panels and rollers can be lifted without changing the lifting equipment, and the application range is wide. For the workpiece lifting realized by the folding clamp arm 1 8 and the folding clamp arm 2 9, Figure 2 As shown, the folding clamp arm 1 8 and the folding clamp arm 2 9 are symmetrically installed at the bottom of the curved beam 3, and a crossbeam 14 is sleeved and installed on the central axis of rotation of the folding clamp arm 1 8 and the folding clamp arm 2 9. The crossbeam 14 is connected to the curved beam 3 through a folding rod to stabilize its own shape. Under normal conditions, under the influence of gravity, the folding clamp arm 1 8 and the folding clamp arm 2 9 at the bottom of the curved beam 3 automatically extend, resulting in a reduction in the contact and clamping gap with the workpiece. Then, the entire lifting equipment is moved to the top of the workpiece. When placed vertically, the folding clamp arm 1 8 and the folding clamp arm 2 9 cannot complete the wrapping of both sides of the workpiece. As the top crane 2 continues to release the rope, the folding clamp arm 1 8 and the folding clamp arm 2 9 begin to expand to both sides when they come into contact with the workpiece. At the same time, the through locking mechanism 15 installed on the crossbeam 14 is restricted by the workpiece and begins to move in the opposite direction. The slide post 151 moves upward as a whole. When the slide post 151 moves upward and the positioning cylinder 10 at the bottom of the arc beam 3 moves downward, the locking column 13 at the bottom of the positioning cylinder 10 is abutted against the positioning groove 152 on the slide post 151. The entire positioning tube 10 is as shown in FIG. Figure 7 As shown, the steering cylinder 12 is fixedly connected to the inner wall of the top of the positioning cylinder 10, and the supporting cylinder 11 is fixed to the inner wall of the bottom, and the locking column 13 is located between the steering cylinder 12 and the supporting cylinder 11, and the locking column 13 is slidably connected therebetween. At the same time, notches are designed on the opposite surfaces of the steering cylinder 12 and the supporting cylinder 11, and the notches between the two are staggered. The locking column 13 is hung on the notch of the supporting cylinder 11 by means of the protrusions on both sides. As the locking column 13 contacts the inner wall of the positioning groove 152, it completes its own 90° rotation when contacting the notch on the steering cylinder 12, causing the end block of the locking column 13 to abut against the positioning groove 152, and the sliding column 151 is connected to the positioning cylinder 10. Since the entire slide post 151 has a limited range of motion on the crossbeam 14, the entire curved beam 3 is pulled to drive the bottom folding clamp arm 1 8 and the folding clamp arm 2 9 to rise. At this time, the lock post 13 is connected to the slide post 151, first driving the entire slide post 151 to move upward, and then reaching the maximum movement distance of the slide post 151. At this time, the curved beam 3 is pulled upward, and the lock post 13 drives the entire crossbeam 14 to move upward through the slide post 151. At this time, the folding clamp arm 1 8 and the folding clamp arm 2 9 are closed and clamped, and can clamp some workpieces that meet the width. For the small width of the H-shaped steel, with the slide column 151 rising to the maximum distance, it is still unable to complete the folding clamp arm one 8 and folding clamp arm two 9 closed clamping work, at this time the end of the lock column 13 needs to be separated from the upper positioning groove 152 of the slide column 151, and the arc-shaped beam 3 needs to be pressed again, the positioning groove 152 is used to abut the lock column 13, the turning cylinder 12 completes the rotation of the lock column 13, the slide column 151 is separated from the lock column 13, and the arc-shaped beam 3 is lifted again to pull the folding clamp arm one 8 and the folding clamp arm two 9, thereby completing the clamping and hoisting work of the small bridge beam workpiece.

[0015] In embodiment 2, the cable roller is clamped and hoisted by the through locking mechanism 15 installed on the cross beam 14. Compared with the folding clamp arm one 8 and the folding clamp arm two 9 clamping the workpiece on both sides, the slide column 151 itself has a cylindrical structure, which can pass through the center hole of the cable roller. The slide column 151 is also provided with a limiting block 16 in the bottom groove, which is used for controlling the distance between the limiting blocks 16, hanging the cable roller at the bottom, and cooperating with the lifting of the entire arc-shaped beam 3 to complete the hoisting work of the cable roller. The distance between the limiting blocks 16 at the bottom of the slide column 151 is controlled, as shown in Figure 8 Two limiting blocks 16 slide in the groove at the bottom of the slide column 151, and the two limiting blocks 16 penetrate each other and are sleeved with springs 17 on the inner walls, and a threaded column 154 is threadedly connected on the opposite surface of the limiting block 16, and the threaded column 154 is slidably connected with a rotating sleeve 153 sleeved on the outer wall of the slide column 151, as shown in Figure 9 The rotating sleeve 153 extends to the inside of the slide column 151, and when the rotating sleeve 153 rotates, the threaded column 154 rotates and moves downward at the same time, and the expansion disc 155 connected with the threaded column 154 rotates synchronously, and the larger radius side of the expansion disc 155 is rotated to the surface of the limiting block 16, which pushes the limiting blocks 16 on both sides to slide outward, expands the combined radius at the bottom of the slide column 151, and when the combined radius is greater than the inner diameter of the cable roller, the entire cable roller is abutted and lifted. The premise of using the slide column 151 to hoist the cable roller is that the slide column 151 can be inserted into the inside of the cable roller. When the combined radius of the slide column 151 and the limiting block 16 is maximum, the inside of the cable roller cannot be abutted, and hoisting cannot be completed. Unlike conventional hoisting devices, which are single in hoisting types of bridge construction workpieces and have poor stability when hoisting different workpieces in combination, the present application can hoist the cable roller while clamping the related I-beam, adjust the limiting block 16 by rotating the rotating sleeve 153, lock the inside of the cable roller, move the slide column 151 with the cable roller to the top of the beam by lifting the arc-shaped beam 3, press the surface of the beam, separate the lock column 13 from the positioning groove 152, and then lift the entire folding clamp arm one 8 and folding clamp arm two 9, thereby completing the combined clamping and hoisting of the cable roller and the I-beam, as shown in Figure 10As shown, the cable roller is also transversely placed to press the I-beam clamped by the folding clamp arm 1 8 and the folding clamp arm 2 9, thereby improving the overall lifting stability.

[0016] The working principle of the present application is as follows: for the I-beam clamping and fixing, the crown beam 3 is moved to the center position of the I-beam by the crown block 2, and the slide post 151 abuts against the surface of the I-beam when the crown beam 3 is lowered, and the lock post 13 in the positioning groove 152 is contacted with the turning cylinder 12 in the positioning cylinder 10 when the slide post 151 is lifted, so that the lock post 13 is turned by 90°, and then the crown beam 3 is lifted, the folding clamp arm 1 8 and the folding clamp arm 2 9 on both sides are closed, and the clamping and lifting of the I-beam on both sides are completed. For the cable roller clamping and fixing, the slide post 151 on the side of the cross beam 14 is aligned with the center hole of the cable roller, and when the slide post 151 is completely penetrated, the rotating sleeve 153 at the end of the slide post 151 is rotated, the inner threaded post 154 is driven to rotate, the expanding disc 155 is rotated, and the limiting block 16 on both sides is pushed out, and the locking of the cable roller is completed.

[0017] The above is only an example and description of the structure of the present application, and those skilled in the art can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as they do not deviate from the structure of the present application or exceed the scope defined by the claims.

[0018] In the description of the present application, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0019] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and limit the present application to the specific embodiments. Obviously, many modifications and changes can be made according to the content of the present application. The embodiments are selected and described in the present application in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited by the claims and their entire scope and equivalents.

Claims

1. A stable lifting device for bridge construction, comprising a lifting platform (1), a crown block (2) being slidably connected to the lifting platform (1), and a curved beam (3) being mounted on the bottom of the crown block (2), characterized in that: The two sides of the bottom of the arc-shaped beam (3) are symmetrically and movably connected to a folding clamp arm 1 (8) and a folding clamp arm 2 (9), and the folding clamp arm 1 (8) and the folding clamp arm 2 (9) on the same side are rotatably connected via a rotating shaft, and a single crossbeam (14) is also rotatably connected to the connecting rotating shaft of the two, and the two sides of the crossbeam (14) are rotatably connected to the arc-shaped beam (3) via folding rods; The crossbeam (14) is provided with a through locking mechanism (15), and the through locking mechanism (15) includes a slide column (151) and a threaded column (154). The crossbeam (14) is vertically slidably connected with the slide column (151), and a positioning groove (152) is provided on the top of the slide column (151). The inner wall of the column cavity of the slide column (151) is threadedly connected to the threaded column (154). The outer wall of the slide column (151) is provided with a groove, and the groove is connected to the column cavity of the slide column (151). The outer wall of the slide column (151) is movably connected with a rotary sleeve (153), and the inner wall of the rotary sleeve (153) passes through the groove and is slidably connected with the threaded column (154). The column cavity of the slide column (151) and the expansion disk (155) is slidably connected on the threaded column (154); The sliding column (151) is located in the column cavity and is symmetrically connected to the limiting blocks (16) on both sides of the expansion disk (155). The limiting blocks (16) are provided with cavities and columns. The side wall columns of the limiting blocks (16) penetrate the cavities, and springs (17) are sleeved in their respective cavities.

2. The stable lifting equipment for bridge construction according to claim 1, characterized in that: Tooth grooves (4) are evenly formed on the top of the arc-shaped beam (3), a hanging platform (5) is movably connected to the arc-shaped beam (3), and a limiting tooth (6) is movably connected to the inner wall of the hanging platform (5), and the limiting tooth (6) is meshed and connected with the tooth groove (4).

3. The stable lifting equipment for bridge construction according to claim 2, characterized in that: The side of the hanging platform (5) is slidably connected to a positioning bolt (7), one side of the positioning bolt (7) passes through the hanging platform (5) and is locked by a nut, and a biting tooth is fixedly connected inside the hanging platform (5) and on the opposite side of the limiting tooth (6) and the positioning bolt (7), and the biting teeth on both sides are meshed and abutted.

4. The stable lifting equipment for bridge construction according to claim 3, characterized in that: A positioning cylinder (10) is fixed at the bottom of the arc-shaped beam (3), a support cylinder (11) is fixedly connected to the inner wall of the bottom of the positioning cylinder (10), a steering cylinder (12) is fixedly connected inside the positioning cylinder (10) and located on the top of the support cylinder (11), a locking column (13) is movably connected inside the positioning cylinder (10) and located on the support cylinder (11), and one end of the locking column (13) passes through the positioning cylinder (10) and is fixed with a clamping block.

5. The stable lifting equipment for bridge construction according to claim 4, characterized in that: The fixed block at the end of the lock column (13) is arranged correspondingly to the positioning groove (152) at the top of the sliding column (151), and the notch sections on the support cylinder (11) and the steering cylinder (12) are staggered.

6. A method for using a stable lifting device for bridge construction according to any one of claims 1 to 5, characterized in that: The following steps are involved: I-beam clamping; Move the overhead crane (2) to the center of the I-beam, lower the arc-shaped beam (3) so that the slide column (151) contacts the surface of the I-beam, and as the slide column (151) rises, the lock column (13) abutting in the positioning groove (152) contacts the steering cylinder (12) in the positioning cylinder (10) during the rising process, causing the lock column (13) to rotate 90 degrees, and then the arc-shaped beam (3) rises, and the folding clamp arm 1 (8) and the folding clamp arm 2 (9) on both sides begin to close, and the clamping and lifting of both sides of the I-beam are completed; Cable roller clamping; Align the side sliding column (151) of the crossbeam (14) with the center hole of the cable roller. When the sliding column (151) is completely penetrated, rotate the end of the sliding column (151) to rotate the sleeve (153). The sleeve (153) drives the inner threaded column (154) to rotate, causing the expansion disk (155) to rotate and push out the limit blocks (16) on both sides, completing the cable roller locking. Combined lifting; First, lock the cable roller, then move the crossbeam (14) with the cable roller to the bottom of the I-beam, use the cable roller to press the I-beam, and when lifting, close the folding clamp arm to complete the clamping.

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