A bridge construction hoisting device and method

Abstract

The present invention relates to the technical field of hoisting, specifically a bridge construction hoisting device and method. The device includes a crane. A connecting piece is installed at the lower end of the movable part of the lifting rope of the crane. An installation plate is arranged at the lower end of the connecting piece. Adjusting pieces are installed at both the front and rear ends of the installation plate. The other ends of the two adjusting pieces are both provided with a second rectangular frame. Two installation grooves are formed by the downward depression of the lower end face of the second rectangular frame. Two T-shaped plates are symmetrically and slidably connected to the lower end of the second rectangular frame. A second bidirectional screw is rotatably connected inside the second rectangular frame. A first driving device is installed at the outer end of the second rectangular frame. A pushing piece is arranged at the inner end of the T-shaped plate. An L-shaped block is installed at the inner end of the movable part of the pushing piece. This design realizes the two-point mechanical clamping operation on the precast box girder, and uses a single crane for lifting movement to reduce the hoisting difficulty, effectively reduce the equipment cost for hoisting, effectively reduce the probability of the precast box girder falling during the hoisting process, and has good safety performance.

Description

Technical Field

[0001] The present invention relates to a bridge construction hoisting device and method, belonging to the technical field of hoisting. Background Art

[0002] A bridge generally refers to a structure erected over rivers, lakes and seas to enable vehicles and pedestrians to pass smoothly. During bridge construction, generally, a two-rope structure is symmetrically tied to a precast box girder, and then two hoisting devices are respectively connected to the two-rope structures, and then the precast box girder is hoisted cooperatively. On the one hand, the cooperative hoisting of the two hoisting devices will result in a relatively large equipment cost. On the other hand, during the hoisting operation, auxiliary operations such as multiple coordinations and communications of the two hoisting devices are generally required, which will increase the difficulty of hoisting;

[0003] Moreover, the edge position on the precast box girder is easily in direct contact with the tied rope structure. During the hoisting process, relative movement is likely to occur between the edge position on the precast box girder and the rope structure, resulting in a relatively high probability of the rope structure breaking, etc., and a relatively high probability of the precast box girder falling during the hoisting process, with poor safety. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides a bridge construction hoisting device and method.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a bridge construction hoisting device, including a crane. A connecting piece is installed at the lower end of the movable part of the hoisting rope of the crane. An installation plate is arranged at the lower end of the connecting piece, and the installation plate is arranged horizontally. Adjusting members are installed at both the front and rear ends of the installation plate. The other ends of the two adjusting members are respectively provided with a second rectangular frame, and the second rectangular frame is arranged horizontally. Winding members are arranged at both the front and rear ends of the connecting piece. Auxiliary columns are rotatably connected to the middle parts of the upper ends of the two second rectangular frames. Ropes are installed at the upper ends of the two auxiliary columns. The other ends of the two ropes are respectively connected to the two winding members;

[0006] Two installation grooves are formed by the downward depression of the lower end surface of the second rectangular frame, and both installation grooves communicate with the inner cavity of the second rectangular frame. Two T-shaped plates are symmetrically and slidably connected to the lower end of the second rectangular frame. The vertical parts of the two T-shaped plates respectively penetrate through the two installation grooves, and the longitudinal parts of the two T-shaped plates are slidably connected in the second rectangular frame. A second bidirectional screw is rotatably connected in the second rectangular frame. The second bidirectional screw penetrates through the longitudinal parts of the two T-shaped plates, and the second bidirectional screw is threadedly connected to the two T-shaped plates;

[0007] A first driving device is installed at the outer end of the second rectangular frame, and the output shaft of the first driving device is connected to a second bidirectional screw. A pushing member is arranged at the inner end of the T-shaped plate, and the pushing member is located below the second rectangular frame. The movable part of the pushing member is provided with an L-shaped block at the inner end, and the L-shaped block extends out of the T-shaped plate towards the inner side. The horizontal part of the L-shaped block is located directly on the inner positive side of the T-shaped plate, and the L-shaped block is located below the second rectangular frame.

[0008] Further, the pushing member includes a second U-shaped frame, the second U-shaped frame is installed on the inner end of the T-shaped plate. A lead screw is rotatably connected between the two horizontal parts of the second U-shaped frame. The outer end of the lead screw is connected to a nut seat through a ball screw nut pair. The nut seat is arranged at the inner end of the longitudinal part of the L-shaped block. The second U-shaped frame is located on the outer side of the horizontal part of the L-shaped block, and the inner end of the second U-shaped frame is slidably connected to the outer end of the longitudinal part of the L-shaped block. A second driving device is installed at the outer end of the second U-shaped frame, and the output shaft of the second driving device is connected to the lead screw;

[0009] The inner end surface of the longitudinal part of the L-shaped block is recessed to form a groove. A plurality of auxiliary wheels are rotatably connected in the groove at equal intervals, and the auxiliary wheels are arranged vertically. The auxiliary wheels extend out of the groove towards the inner side. The front end surface of the vertical part of the T-shaped plate is recessed backward to form a guide hole, and the guide hole penetrates the T-shaped plate. A guide rod is installed at the outer end of the horizontal part of the L-shaped block, the guide rod is slidably connected to the inner end of the guide hole, and the guide rod extends into the guide hole. Two optical rods are symmetrically arranged inside the second rectangular frame, and the two optical rods are located on the front and back sides of the second bidirectional screw. Both of the two optical rods penetrate through the two T-shaped plates, and the optical rods are slidably connected to the T-shaped plates.

[0010] Further, the adjusting member includes a first rectangular frame, the first rectangular frame is located between the outer side of the mounting plate and the inner side of the second rectangular frame, and the first rectangular frame is arranged horizontally. A driving assembly is installed inside the first rectangular frame. A plurality of first support arms are movably installed at equal intervals at the outer end of the right part of the driving assembly, and the other ends of the plurality of first support arms are movably arranged at equal intervals on the inner end of the second rectangular frame. A plurality of second support arms are movably arranged at equal intervals at the inner end of the right part of the driving assembly, and the other ends of the plurality of second support arms are movably arranged at equal intervals on the outer end of the mounting plate. The first support arms and the second support arms are arranged in a V-shaped structure with a wider left side and a narrower right side;

[0011] A plurality of third support arms are movably installed at equal intervals at the inner end of the left part of the driving assembly, and the other ends of the plurality of third support arms are movably arranged at equal intervals on the outer end of the mounting plate. The third support arms are located on the left side of the second support arms. A plurality of fourth support arms are movably installed at equal intervals at the outer end of the left part of the driving assembly, and the other ends of the plurality of fourth support arms are movably arranged at equal intervals on the inner end of the second rectangular frame. The fourth support arms are located on the left side of the first support arms. The fourth support arms and the third support arms are arranged in a V-shaped structure with a narrower left side and a wider right side.

[0012] Further, the driving assembly includes a first bidirectional screw, which is rotatably connected within a first rectangular frame. A third driving device is installed at the outer end of the first rectangular frame, and the output shaft of the third driving device is connected to the first bidirectional screw. A plurality of first movable blocks are equidistantly threadedly connected to the outer end of the right part of the first bidirectional screw. All the first movable blocks are slidably connected within the first rectangular frame, and the first movable blocks respectively extend to the front and rear ends of the first rectangular frame;

[0013] A plurality of second movable blocks are equidistantly threadedly connected to the outer end of the left part of the first bidirectional screw, and the second movable blocks are located on the left side of the first movable blocks. All the second movable blocks are slidably connected within the first rectangular frame, and the second movable blocks respectively extend to the front and rear ends of the first rectangular frame. The first movable blocks are movably installed with first arms towards the outer ends, the first movable blocks are movably provided with second arms towards the inner ends, the second movable blocks are movably installed with third arms towards the inner ends, and the second movable blocks are movably provided with fourth arms towards the outer ends.

[0014] Further, the connecting member includes a mounting post, which is hinged to the middle of the upper end of the mounting plate. A rectangular groove is formed by downward depression on the upper end surface of the mounting post. A connecting post is detachably installed at the upper end of the mounting post, and the connecting post extends into the rectangular groove. The upper end of the connecting post is connected to the lower end of the movable part of the lifting rope of the crane.

[0015] Further, the winding member includes a first U-shaped frame, which is arranged on the outer end of the mounting post and is arranged horizontally. A winding wheel is rotatably connected between the two vertical parts of the first U-shaped frame. The winding wheel is connected to the other end of the rope. A fourth driving device is installed at the outer end of the first U-shaped frame, and the output shaft of the fourth driving device is connected to the winding wheel.

[0016] Further, a plurality of telescopic rods are equidistantly installed directly above the first rectangular frame, and the plurality of telescopic rods are equidistantly arranged between the outer end of the mounting plate and the inner end of the second rectangular frame.

[0017] A bridge construction hoisting method has the following operating steps:

[0018] First step, length adjustment: According to the length of the precast box girder, use the third driving device and the first bidirectional screw to move the first movable blocks and the second movable blocks inward, so that the first arms, the second arms, the third arms and the fourth arms expand outward, thereby moving the two second rectangular frames outward to a suitable position for adjusting the length of the structure formed by components such as the mounting plate and the two second rectangular frames;

[0019] Step 2: Clamping. First, move the structure formed by components such as the mounting plate and two second rectangular frames above the precast box girder, and position the precast box girder with the T-shaped plate facing inwards. Then, use the first driving device and the second bidirectional screw to move the two T-shaped plates on one side inwards, thereby moving the two components formed by components such as the second U-shaped frame, screw rod, nut seat, and L-shaped block inwards, so as to tightly clamp both sides of the precast box girder.

[0020] Step 3: Lifting. Use a crane to move the assembly formed by components such as the mounting column and the connecting column upwards, thereby moving the mounting plate upwards, so that the tightly clamped precast box girder is separated from the ground and hovers.

[0021] Step 4: Adjusting. When the precast box girder in hovering and clamping state is inclined, use the fourth driving device located in the sinking direction of the precast box girder to drive the corresponding winding wheel to rotate, thereby winding the corresponding rope, so that the corresponding auxiliary column moves upwards, and then the hovering and clamped precast box girder is leveled. When the precast box girder in hovering and clamping state is in a horizontal state, directly proceed to the next step.

[0022] Step 5: Hoisting. Use a crane to continue moving the precast box girder in clamping and horizontal state upwards, and move the precast box girder above the corresponding pier. When there is a linear deviation between the precast box girder and the corresponding pier, use the second driving device and the screw rod to move the nut seat back and forth, thereby moving the L-shaped block back and forth, so that the clamped precast box girder moves back and forth to the appropriate position, and then place the precast box girder on the upper end of the corresponding pier. When the precast box girder and the corresponding pier are in a proper position state, directly place the precast box girder on the upper end of the corresponding pier.

[0023] Advantages of the present invention:

[0024] 1. Through the mounting plate, two second rectangular frames, two third motors, and two second bidirectional screws, the four T-shaped plates move inwards, and then the four components formed by components such as the second U-shaped frame, screw rod, nut seat, and L-shaped block move inwards, realizing two-point mechanical clamping operation on the precast box girder, and using a crane for lifting movement to reduce the hoisting difficulty, effectively reducing the equipment cost for hoisting, effectively reducing the probability of the precast box girder falling during the hoisting process, and having good safety.

[0025] 2. The two second motors, two first bidirectional screws, multiple first movable blocks and multiple second movable blocks move inward, so that the first structure formed by the first arm and the second arm and the second structure formed by the third arm and the fourth arm both perform outward expansion movements, and then the two second rectangular frames move outward, realizing the adjustment of the length of the clamping structure formed by components such as the mounting plate and the two second rectangular frames, effectively meeting the effective clamping of precast box girders of different lengths and improving the scope of use.

[0026] 3. By using four fourth motors, four lead screws, four nut seats and four L-shaped blocks, the precast box girder being clamped can perform linear movement within a small range, effectively reducing the difficulty of hoisting and effectively ensuring the hoisting effect of the precast box girder.

[0027] 4. Through the first motor, the winding wheel and the rope, the corresponding auxiliary column and the second rectangular frame perform swinging movements, realizing the leveling treatment of the precast box girder held in suspension, effectively reducing the probability of defects such as sliding of the precast box girder due to inclination during the hoisting process, and effectively ensuring the hoisting effect of the precast box girder.

[0028] 5. Through the fifth motor, the rotating gear, the annular gear and the cylinder, the clamping structure formed by components such as the mounting plate and the two second rectangular frames rotates by an appropriate angle, realizing the alignment treatment of the precast box girder held in suspension, effectively reducing the difficulty of hoisting and effectively ensuring the hoisting effect of the precast box girder.

[0029] 6. The connection between the auxiliary column and the second rectangular frame effectively prevents phenomena such as twisting of the rope during the alignment process and can protect the rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent:

[0031] Figure 1 It is a schematic structural diagram of a bridge construction hoisting device of the present invention;

[0032] Figure 2 It is an assembly drawing of the second rectangular frame and the T-shaped plate in a bridge construction hoisting device of the present invention;

[0033] Figure 3 It is an assembly drawing of the third motor, the T-shaped plate and the second bidirectional screw in a bridge construction hoisting device of the present invention;

[0034] Figure 4 It is an assembly drawing of the second U-shaped frame, the fourth motor, the lead screw, the nut seat and the L-shaped block in a bridge construction hoisting device of the present invention;

[0035] Figure 5is Figure 4 a sectional view of;

[0036] Figure 6 is a perspective view of the second rectangular frame in a bridge construction hoisting device of the present invention;

[0037] Figure 7 is a perspective view of the first rectangular frame in a bridge construction hoisting device of the present invention;

[0038] Figure 8 is a sectional view of the first rectangular frame in a bridge construction hoisting device of the present invention;

[0039] Figure 9 is a schematic diagram of another embodiment of a bridge construction hoisting device of the present invention;

[0040] Figure 10 is a schematic diagram of the third embodiment of a bridge construction hoisting device of the present invention;

[0041] Figure 11 is an assembly drawing of the mounting column and the mounting plate in a bridge construction hoisting device of the present invention;

[0042] Figure 12 is Figure 11 a sectional view of.

[0043] In the figure: 1, crane; 2, mounting column; 3, mounting plate; 4, first rectangular frame; 5, second rectangular frame; 11, connecting column; 21, first U-shaped frame; 22, first motor; 23, winding wheel; 24, rope; 25, auxiliary column; 26, auxiliary plate; 27, cylinder; 31, telescopic rod; 41, first arm; 42, second motor; 43, second arm; 44, third arm; 45, fourth arm; 46, first movable block; 47, second movable block; 48, first bidirectional screw; 51, third motor; 52, T-shaped plate; 53, second U-shaped frame; 54, fourth motor; 55, lead screw; 56, nut seat; 57, L-shaped block; 58, second bidirectional screw; 201, straight plate; 202, insertion rod; 261, fifth motor; 262, rotating gear; 263, damping gear; 271, annular gear; 501, mounting groove; 571, guide rod; 572, groove; 573, auxiliary wheel; 581, smooth rod. Detailed implementation manners

[0044] To make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0045] Embodiment 1: As shown in Figures 1 - 8As shown in the figure, a bridge construction hoisting device is provided, including a crane 1. The upper end of the connecting column 11 that can be detachably installed at the upper end of the installation column 2 and extends into the rectangular groove is connected to the lower end of the movable part of the lifting rope of the crane 1. A rectangular groove is formed by recessing downward at the upper end of the installation column 2. Through the rectangular groove, an installation space is provided for the connecting column 11, and the upper middle part of the horizontally arranged installation plate 3 is hinged with the installation column 2. Through the installation plate 3, an installation carrier is provided for components such as the installation column 2. Then, a plurality of insertion rods 202 passing through the installation column 2 and the connecting column 11 are arranged at equal intervals on the right end of the straight plate 201, and the straight plate 201 is attached to the left end of the installation column 2 and is located above the first motor 22. Through the straight plate 201, an installation carrier is provided for the insertion rods 202, and a plurality of limit pins located on the right side of the installation column 2 are respectively assembled on the plurality of insertion rods 202. Through the limit pins, the phenomenon of the insertion rods 202 falling off is prevented;

[0046] Two horizontally arranged first rectangular frames 4 are respectively arranged on the front and back sides of the installation plate 3. Through the first rectangular frames 4, an installation carrier is provided for components such as the first bidirectional screw 48. Two horizontally arranged second rectangular frames 5 are respectively installed on the outer sides of the two first rectangular frames 4. Through the second rectangular frames 5, an installation carrier is provided for components such as the second bidirectional screw 58. Then, the first bidirectional screw 48 is rotatably connected in the first rectangular frame 4. Through the first bidirectional screw 48, the first movable block 46 and the second movable block 47 move inward, and the output shaft of the third driving device installed at the outer end of the first rectangular frame 4 is connected to the first bidirectional screw 48. Through the third driving device, the first bidirectional screw 48 is driven to rotate. The third driving device can adopt the second motor 42;

[0047] A plurality of first movable blocks 46 that are slidably connected in the first rectangular frame 4 and respectively extend to the front and back ends of the first rectangular frame 4 are equidistantly threadedly connected to the outer right end of the first bidirectional screw 48. Through the first movable block 46, an installation carrier is provided for components such as the first support arm 41. A plurality of second movable blocks 47 located on the left side of the first movable block 46 and slidably connected in the first rectangular frame 4 and respectively extending to the front and back ends of the first rectangular frame 4 are equidistantly threadedly connected to the outer left end of the first bidirectional screw 48. Through the second movable block 47, an installation carrier is provided for components such as the third support arm 44;

[0048] The other ends of a plurality of first arms 41 with movable other ends are movably installed at the outer ends of a plurality of first movable blocks 46, and the first movable blocks 46 are connected to the second rectangular frame 5 through the first arms 41. The other ends of a plurality of second arms 43 with movable other ends are movably arranged at the inner ends of a plurality of first movable blocks 46, and the first movable blocks 46 are connected to the mounting plate 3 through the second arms 43. A plurality of telescopic rods 31 located directly above the first rectangular frame 4 are equidistantly arranged between the outer end of the mounting plate 3 and the inner end of the second rectangular frame 5. Through the telescopic rods 31, on the one hand, the movement of the second rectangular frame 5 is guided, and on the other hand, the connection strength between the mounting plate 3 and the second rectangular frame 5 is increased;

[0049] The other ends of a plurality of third arms 44 with movable other ends and located on the left side of the second arm 43 at the outer end of the mounting plate 3 are movably installed at the inner ends of a plurality of second movable blocks 47. The second movable blocks 47 are connected to the mounting plate 3 through the third arms 44. The other ends of a plurality of fourth arms 45 with movable other ends and located on the left side of the first arm 41 at the inner end of the second rectangular frame 5 are movably arranged at the outer ends of a plurality of second movable blocks 47. The second movable blocks 47 are connected to the second rectangular frame 5 through the fourth arms 45. The first arm 41 and the second arm 43 are arranged in a V-shaped structure with a wider left side and a narrower right side, and the fourth arm 45 and the third arm 44 are arranged in a V-shaped structure with a narrower left side and a wider right side. The first arm 41, the second arm 43, the third arm 44, and the fourth arm 45 are used in cooperation to adjust the distance between the mounting plate 3 and the second rectangular frame 5;

[0050] Two installation grooves 501 communicating with the inner cavity of the second rectangular frame 5 are formed by concave depressions on the lower end surface of the second rectangular frame 5. The vertical parts of two T-shaped plates 52 respectively penetrate through the two installation grooves 501. Through the installation grooves 501, the T-shaped plates 52 extend into the second rectangular frame 5. The two T-shaped plates 52 with longitudinal parts slidably connected in the second rectangular frame 5 are symmetrically slidably connected to the lower end of the second rectangular frame 5. Through the T-shaped plates 52, an installation carrier is provided for components such as the second U-shaped frame 53. The second bidirectional screw 58 passing through the longitudinal parts of the two T-shaped plates 52 and threadedly connected to the two T-shaped plates 52 is rotatably connected in the second rectangular frame 5. Through the second bidirectional screw 58, the two T-shaped plates 52 move relative to each other. Then, the output shaft of the first driving device with a fixed part installed at the outer end of the second rectangular frame 5 is connected to the second bidirectional screw 58. Through the first driving device, the second bidirectional screw 58 is driven to rotate. The first driving device can adopt the third motor 51;

[0051] Two second U-shaped frames 53 which are arranged oppositely, are located at the lower side of the second rectangular frame 5, and the transverse parts of the L-shaped blocks 57 face outward and the inner ends are slidably connected to the outer ends of the longitudinal parts of the L-shaped blocks 57 are respectively installed on the inner ends of the two T-shaped plates 52. Through the second U-shaped frames 53, an installation carrier is provided for components such as the lead screws 55, and the two lead screws 55 are respectively rotatably connected between the two transverse parts of the two second U-shaped frames 53. Through the lead screws 55, the nut seats 56 move back and forth. Then, the two nut seats 56 are respectively connected to the outer ends of the two lead screws 55 through ball screw pairs. Through the nut seats 56, the L-shaped blocks 57 move back and forth, and the longitudinal parts of the two L-shaped blocks 57 which are arranged oppositely, extend inward from the T-shaped plates 52 and the transverse parts are located on the inner positive side of the T-shaped plates 52 and at the lower side of the second rectangular frame 5 are respectively arranged on the outer ends of the two nut seats 56. Through the L-shaped blocks 57, an installation carrier is provided for the auxiliary wheels 573;

[0052] The output shaft of the second driving device whose fixed part is installed at the outer end of the second U-shaped frame 53 is connected to the lead screw 55. Through the second driving device, the lead screw 55 is driven to rotate. The second driving device can adopt the fourth motor 54. A groove 572 is formed by recessing the inner end surface of the longitudinal part of the L-shaped block 57 outward. Through the groove 572, an installation space is provided for the auxiliary wheels 573, and a plurality of auxiliary wheels 573 which are arranged vertically and extend inward from the groove 572 are rotatably connected to the inside of the groove 572 at equal intervals. Through the auxiliary wheels 573, on the one hand, the precast box girder being clamped is protected, and on the other hand, the precast box girder is assisted to move within a small range;

[0053] A guide hole penetrating the T-shaped plate 52 is formed by recessing the front end surface of the vertical part of the T-shaped plate 52 backward. Through the guide hole, a movement channel is provided for the guide rod 571. The guide rod 571 which is slidably connected to the inner end of the guide hole and extends into the guide hole is installed on the outer end of the transverse part of the L-shaped block 57. The guide rod 571 and the guide hole are used in cooperation to guide the movement of the L-shaped block 57, and two optical rods 581 which penetrate the two T-shaped plates 52 and are slidably connected to the T-shaped plates 52 and are located on the front and back sides of the second bidirectional screw 58 are symmetrically arranged inside the second rectangular frame 5. The two optical rods 581 are used in cooperation to guide the movement of the T-shaped plate 52.

[0054] Before use, first insert the connecting column 11 into the rectangular groove on the mounting column 2, then a plurality of insertion rods 202 which are equidistantly installed at the right end of the straight plate 201 penetrate both the mounting column 2 and the connecting column 11, and then a plurality of limit pins are respectively assembled onto the plurality of insertion rods 202, so as to connect the crane 1 with the clamping structure formed by components such as the mounting plate 3 and the two second rectangular frames 5, realizing the convenient disassembly and assembly between the crane 1 and the clamping structure, and being convenient for assembly and maintenance;

[0055] During use, first start the two second motors 42 to drive the two first bidirectional screws 48 to rotate simultaneously, so that the multiple first movable blocks 46 and the multiple second movable blocks 47 move inward, thereby causing the first structure formed by the first arm 41 and the second arm 43 to perform an outward expansion movement, and at the same time causing the second structure formed by the third arm 44 and the fourth arm 45 to perform an outward expansion movement, so that the two second rectangular frames 5 move outward to a suitable position, realizing the adjustment of the length of the clamping structure formed by components such as the mounting plate 3 and the two second rectangular frames 5, effectively meeting the effective clamping of precast box girders of different lengths, and improving the scope of use;

[0056] Then use the crane 1 to move the clamping structure directly above the precast box girder, and make the precast box girder face inward at the T-shaped plate 52. Then start the two third motors 51 to drive the two second bidirectional screws 58 to rotate simultaneously. Since the second bidirectional screws 58 are threadedly connected to the two T-shaped plates 52, the two first bidirectional screws 48 rotate, so that the four T-shaped plates 52 move inward, and then the four components formed by the second U-shaped frames 53, the lead screws 55, the nut seats 56 and the L-shaped blocks 57 and other components move inward, so that the auxiliary wheels 573 on both sides of the precast box girder are in extrusion contact with the relative two ends of the precast box girder, realizing the two-point mechanical clamping operation of the precast box girder, and using a crane 1 for lifting movement to reduce the hoisting difficulty, effectively reducing the equipment cost for hoisting, effectively reducing the probability of the precast box girder falling during the hoisting process, and having good safety;

[0057] Then use the crane 1 to lift the clamping structure and the clamped precast box girder upward, and hoist the precast box girder directly above the corresponding pier. If the precast box girder is in a linear offset state with the pre-installed position on the corresponding pier, start the four fourth motors 54 to drive the four lead screws 55 to rotate simultaneously. Since the lead screws 55 are connected to the nut seats 56 through ball screw pairs, the rotation of the four lead screws 55 will cause the four nut seats 56 to move in the same direction, so that the four L-shaped blocks 57 move to a suitable position in the same direction, so that the clamped precast box girder is in a correct position with the corresponding pier, and then perform the placement and installation operation, realizing the linear movement of the clamped precast box girder within a small range, effectively reducing the hoisting difficulty, and effectively ensuring the hoisting effect of the precast box girder.

[0058] Embodiment 2: Use a clamping structure formed by components such as the mounting plate 3 and the two second rectangular frames 5 to perform two-point mechanical clamping on the precast box girder. However, when clamping the precast box girder, the clamping structure is prone to be offset from the precast box girder, resulting in an eccentric state between the lifting point generated after clamping the precast box girder and the center point of the precast box girder, resulting in the precast box girder tilting during the upward hoisting process of the clamped precast box girder, and resulting in a relatively high probability of defects such as sliding under the action of the own weight of the precast box girder.

[0059] To solve the above problems, as Figure 9 , Figure 11 and Figure 12 shown, two horizontally arranged first U-shaped frames 21 are respectively installed at the front and rear ends of the installation column 2. Through the first U-shaped frames 21, an installation carrier is provided for components such as the winding wheels 23, and two winding wheels 23 are respectively rotatably connected between the two vertical parts of the two first U-shaped frames 21. Through the winding wheels 23, the rope 24 is wound and unwound. Then, the output shaft of the fourth driving device installed at the outer end of the first U-shaped frame 21 is connected to the winding wheel 23. Through the fourth driving device, the winding wheel 23 is driven to rotate. The fourth driving device can adopt the first motor 22;

[0060] Two auxiliary columns 25 are respectively rotatably connected to the middle parts of the upper ends of the two second rectangular frames 5. Through the auxiliary columns 25, the rope 24 is movably connected to the corresponding second rectangular frame 5, and two ropes 24 are respectively installed on the upper ends of the two auxiliary columns 25. Then, the other ends of the two ropes 24 are respectively connected to the two winding wheels 23. Through the rope 24, the auxiliary columns 25 are pulled.

[0061] During use, first, the components on the two second rectangular frames 5 are used to perform two-point mechanical clamping on the precast box girder. Then, the crane 1 is used to move the clamped precast box girder upward by a certain distance and hover, so that the clamped precast box girder is separated from the ground. If the hovered and clamped precast box girder is in an inclined state, start a first motor 22 at the corresponding position, thereby driving the corresponding winding wheel 23 to rotate, and then winding the corresponding rope 24;

[0062] Thereby, the corresponding auxiliary column 25 moves upward, and then the corresponding second rectangular frame 5 swings upward. At this time, the other second rectangular frame 5 swings downward correspondingly, so that the hovered and clamped precast box girder swings into a horizontal state, realizing the leveling treatment of the hovered and clamped precast box girder, effectively reducing the probability of defects such as sliding of the precast box girder due to inclination during the lifting process, and effectively ensuring the lifting effect of the precast box girder.

[0063] Embodiment 3: A clamping structure formed by components such as the mounting plate 3 and two second rectangular frames 5 is used to perform two-point mechanical clamping on the precast box girder, and a crane 1 is used to lift the clamped precast box girder, and the rope 24 is wound to level the lifted and clamped precast box girder. However, the lifting movement and the leveling movement generally use a rope structure to perform corresponding operations, resulting in an angular deviation phenomenon easily formed between the precast box girder moving to the position to be placed and the pre-installed position on the corresponding pier, so that it is necessary to adjust multiple times to align the precast box girder with the corresponding pier, thereby increasing the difficulty of lifting.

[0064] To solve the above problems, as Figures 10 - 12 shown, a vertically arranged cylinder 27 is provided at the middle position of the upper end of the mounting plate 3. Through the cylinder 27, a mounting carrier is provided for the auxiliary plate 26, and the auxiliary plate 26 is rotatably connected to the upper end of the cylinder 27. Through the auxiliary plate 26, a mounting carrier is provided for components such as the mounting column 2. Then, the mounting column 2 is hinged to the upper end of the auxiliary plate 26, and an annular gear 271 located between the auxiliary plate 26 and the mounting plate 3 is arranged on the outer end of the cylinder 27. Through the annular gear 271, the cylinder 27 rotates;

[0065] A rotating gear 262 located between the auxiliary plate 26 and the mounting plate 3 is meshed with the right end of the annular gear 271. Through the rotating gear 262, the annular gear 271 rotates, and the output shaft of a fifth motor 261 whose fixed part is installed at the upper end of the auxiliary plate 26 and on the right side of the connecting column 11 penetrates through the auxiliary plate 26 and is connected to the rotating gear 262. Through the fifth motor 261, the rotating gear 262 is driven to rotate. Then, a damping gear 263 located above the mounting plate 3 and meshed with the left end of the annular gear 271 is rotatably connected to the lower end of the auxiliary plate 26. Through the damping gear 263, the stability of the mounting plate 3 is ensured.

[0066] During use, first, the components on the two second rectangular frames 5 are used to perform two-point mechanical clamping on the precast box girder. Then, the crane 1 is used to lift the clamped precast box girder upward and hoist the precast box girder to directly above the corresponding pier, and the precast box girder is in a hovering state. When an angular deviation state is formed between the precast box girder and the pre-installation position on the corresponding pier, the fifth motor 261 is started, thereby driving the rotating gear 262, and then the annular gear 271 rotates, and thus the cylinder 27 rotates;

[0067] Furthermore, the clamping structure formed by the mounting plate 3 and the two second rectangular frames 5 and other components rotates by an appropriate angle, realizing the adjustment process of the hovering precast box girder, effectively reducing the hoisting difficulty, effectively ensuring the hoisting effect of the precast box girder, and enabling relative rotation between the auxiliary column 25 and the corresponding second rectangular frame 5, effectively preventing phenomena such as twisting of the rope 24, and protecting the rope 24.

[0068] A bridge construction hoisting method has the following operating steps:

[0069] The first step, length adjustment: According to the length of the precast box girder, the second motor 42 and the first bidirectional screw 48 are used to make the first movable block 46 and the second movable block 47 move inward, and then the first arm 41, the second arm 43, the third arm 44, and the fourth arm 45 expand outward, so that the two second rectangular frames 5 move outward to a suitable position, for adjusting the length of the structure formed by the mounting plate 3, the two second rectangular frames 5 and other components;

[0070] Step 2: Clamping. First, move the structure formed by components such as the mounting plate 3 and two second rectangular frames 5 above the precast box girder, and position the precast box girder with the T-shaped plates 52 facing inwards. Then, use the third motor 51 and the second bidirectional screw 58 to move the two T-shaped plates 52 on one side inwards, thereby moving the two components formed by components such as the second U-shaped frames 53, lead screws 55, nut seats 56, and L-shaped blocks 57 inwards, so as to tightly clamp both sides of the precast box girder.

[0071] Step 3: Lifting. Use the crane 1 to move the assembly formed by components such as the mounting column 2 and the connecting column 11 upwards, thereby moving the mounting plate 3 upwards, so that the tightly clamped precast box girder is separated from the ground and hovers.

[0072] Step 4: Adjusting. When the precast box girder in hovering and clamping state is inclined, use the first motor 22 located in the sinking direction of the precast box girder to drive the corresponding winding wheel 23 to rotate, thereby winding the corresponding rope 24, so that the corresponding auxiliary column 25 moves upwards, and then level the precast box girder in hovering and clamping state. When the precast box girder in hovering and clamping state is in a horizontal state, directly proceed to the next step.

[0073] Step 5: Hoisting. Use the crane 1 to continue moving the precast box girder in clamping and horizontal state upwards, and move the precast box girder above the corresponding pier. When there is a linear deviation between the precast box girder and the corresponding pier, use the fourth motor 54 and the lead screw 55 to move the nut seat 56 back and forth, thereby moving the L-shaped block 57 back and forth, so that the clamped precast box girder moves back and forth to a suitable position, and then place the precast box girder on the upper end of the corresponding pier. When the precast box girder and the corresponding pier are in a proper position state, directly place the precast box girder on the upper end of the corresponding pier.

[0074] Although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bridge construction hoisting equipment, characterized in that: The invention comprises a crane (1), wherein a connecting piece is installed at the lower end of the movable part of the lifting rope of the crane (1), a mounting plate (3) is arranged at the lower end of the connecting piece, and the mounting plate (3) is arranged in a transverse direction, adjusting pieces are installed at the front and rear ends of the mounting plate (3), the other ends of the two adjusting pieces are arranged with a second rectangular frame (5), and the second rectangular frame (5) is arranged in a transverse direction, the front and rear ends of the connecting piece are arranged with a winding piece, the middle parts of the upper ends of the two second rectangular frames (5) are rotatably connected to auxiliary columns (25), the upper ends of the two auxiliary columns (25) are installed with ropes (24), and the other ends of the two ropes (24) are respectively connected to two winding pieces; The lower end surface of the second rectangular frame (5) is recessed upward to form two installation grooves (501), and the two installation grooves (501) are both arranged in communication with the inner cavity of the second rectangular frame (5); the lower end of the second rectangular frame (5) is symmetrically slidably connected to the two T-shaped plates (52); the vertical parts of the two T-shaped plates (52) respectively penetrate the two installation grooves (501), and the longitudinal parts of the two T-shaped plates (52) are both slidably connected in the second rectangular frame (5); the second rectangular frame (5) is rotatably connected to the second bidirectional screw rod (58), the second bidirectional screw rod (58) penetrates the longitudinal parts of the two T-shaped plates (52), and the second bidirectional screw rod (58) is threadedly connected to the two T-shaped plates (52); A first driving device is installed at the outer end of the second rectangular frame (5), and the output shaft of the first driving device is connected to the second bidirectional screw rod (58). A pushing member is arranged toward the inner end of the T-shaped plate (52), and the pushing member is located at the lower side of the second rectangular frame (5). An L-shaped block (57) is installed toward the inner end of the movable part of the pushing member, and the L-shaped block (57) extends out of the T-shaped plate (52) toward the inner side, the transverse part of the L-shaped block (57) is located at the inner positive side of the T-shaped plate (52), and the L-shaped block (57) is located at the lower side of the second rectangular frame (5).

2. The bridge construction hoisting equipment according to claim 1 is characterized in that: The pushing member comprises a second U-shaped frame (53), the second U-shaped frame (53) is mounted on the inner end of the T-shaped plate (52), a screw rod (55) is rotatably connected between two transverse parts of the second U-shaped frame (53), the outer end of the screw rod (55) is connected to a nut seat (56) through a ball nut pair, the nut seat (56) is arranged on the inner end of the longitudinal part of the L-shaped block (57), the second U-shaped frame (53) is located on the outer side of the transverse part of the L-shaped block (57), and the inner end of the second U-shaped frame (53) is slidably connected to the outer end of the longitudinal part of the L-shaped block (57), and a second driving device is mounted on the outer end of the second U-shaped frame (53), and the output shaft of the second driving device is connected to the screw rod (55); The longitudinal portion of the L-shaped block (57) is recessed outwardly toward the inner end surface to form a groove (572), and a plurality of auxiliary wheels (573) are equidistantly connected to the groove (572) for rotation, and the auxiliary wheels (573) are arranged vertically, and the auxiliary wheels (573) extend out of the groove (572) toward the inner side. The front end surface of the vertical portion of the T-shaped plate (52) is recessed backward to form a guide hole, and the guide hole penetrates the T-shaped plate (52). A guide rod (571) is installed toward the outer end of the transverse portion of the L-shaped block (57), and the guide rod (571) is slidably connected to the inner end of the guide hole, and the guide rod (571) extends into the guide hole. Two light rods (581) are symmetrically arranged inside the second rectangular frame (5), and the two light rods (581) are located at the front and rear sides of the second bidirectional screw rod (58), and the two light rods (581) penetrate the two T-shaped plates (52), and the light rods (581) are slidably connected to the T-shaped plates (52).

3. The bridge construction hoisting equipment according to claim 2 is characterized in that: The adjusting member comprises a first rectangular frame (4), the first rectangular frame (4) being located between the outer side of the mounting plate (3) and the inner side of the second rectangular frame (5), and the first rectangular frame (4) being arranged in a transverse manner, a driving assembly being installed in the first rectangular frame (4), a plurality of first arms (41) being movably installed at equal distances on the right outer end of the driving assembly, and the other ends of the plurality of first arms (41) being movably arranged at equal distances on the inner end of the second rectangular frame (5), a plurality of second arms (43) being movably arranged at equal distances on the right inner end of the driving assembly, and the other ends of the plurality of second arms (43) being movably arranged at equal distances on the outer end of the mounting plate (3), and the first arms (41) and the second arms (43) being arranged in a V-shaped structure with a left width and a right width; A plurality of third arms (44) are equidistantly mounted on the inner end of the left portion of the driving component, and the other ends of the plurality of third arms (44) are equidistantly mounted on the outer end of the mounting plate (3), and the third arm (44) is located on the left side of the second arm (43). A plurality of fourth arms (45) are equidistantly mounted on the outer end of the left portion of the driving component, and the other ends of the plurality of fourth arms (45) are equidistantly mounted on the inner end of the second rectangular frame (5), and the fourth arm (45) is located on the left side of the first arm (41). The fourth arm (45) and the third arm (44) are arranged in a V-shaped structure with the structure being narrow on the left and wide on the right.

4. The bridge construction hoisting equipment according to claim 3 is characterized by: The driving assembly comprises a first bidirectional screw (48), the first bidirectional screw (48) is rotatably connected in the first rectangular frame (4), a third driving device is installed at the outer end of the first rectangular frame (4), the output shaft of the third driving device is connected to the first bidirectional screw (48), the right outer end of the first bidirectional screw (48) is equidistantly threadedly connected to a plurality of first movable blocks (46), the plurality of first movable blocks (46) are all slidably connected in the first rectangular frame (4), and the first movable blocks (46) extend to the front and rear ends of the first rectangular frame (4) respectively; The left outer end of the first bidirectional screw (48) is equidistantly threadedly connected to a plurality of second movable blocks (47), and the second movable blocks (47) are located on the left side of the first movable block (46). The plurality of second movable blocks (47) are all slidably connected in the first rectangular frame (4), and the second movable blocks (47) extend to the front and rear ends of the first rectangular frame (4), respectively. The first movable block (46) is movably mounted with a first support arm (41) toward the outer end, the first movable block (46) is movably arranged with a second support arm (43) toward the inner end, the second movable block (47) is movably mounted with a third support arm (44) toward the inner end, and the second movable block (47) is movably arranged with a fourth support arm (45) toward the outer end.

5. The bridge construction hoisting equipment according to claim 4 is characterized in that: The connecting member comprises a mounting column (2), the mounting column (2) being hinged at the middle of the upper end of the mounting plate (3), the upper end surface of the mounting column (2) being recessed downward to form a rectangular groove, the upper end of the mounting column (2) being detachably mounted with a connecting column (11), and the connecting column (11) extending into the rectangular groove, the upper end of the connecting column (11) being connected to the lower end of the movable part of the hoisting rope of the crane (1).

6. The bridge construction hoisting equipment according to claim 5, characterized in that: The winding member comprises a first U-shaped frame (21), the first U-shaped frame (21) is arranged on the outer end of the mounting column (2), and the first U-shaped frame (21) is arranged in a transverse manner, a winding wheel (23) is rotatably connected between two vertical parts of the first U-shaped frame (21), the winding wheel (23) is connected to the other end of the rope (24), a fourth driving device is installed at the outer end of the first U-shaped frame (21), and the output shaft of the fourth driving device is connected to the winding wheel (23).

7. The bridge construction hoisting equipment according to claim 6, characterized in that: A plurality of telescopic rods (31) are equidistantly installed directly above the first rectangular frame (4), and the plurality of telescopic rods (31) are equidistantly arranged between the outward end of the mounting plate (3) and the inward end of the second rectangular frame (5).

8. A bridge construction hoisting method, comprising the bridge construction hoisting equipment according to claim 7, characterized in that: The steps are as follows: The first step is to adjust the length. According to the length of the prefabricated box beam, the third driving device and the first bidirectional screw (48) are used to move the first movable block (46) and the second movable block (47) inwardly, thereby expanding the first support arm (41), the second support arm (43), the third support arm (44) and the fourth support arm (45) outwardly, so that the two second rectangular frames (5) are moved outwardly to a suitable position, so as to adjust the length of the structure formed by the mounting plate (3), the two second rectangular frames (5) and other components; The second step is clamping. First, the structure formed by the mounting plate (3), the two second rectangular frames (5) and other components is moved to the top of the prefabricated box beam, and the prefabricated box beam is placed on the inner side of the T-shaped plate (52). Then, the first driving device and the second bidirectional screw (58) are used to move the two T-shaped plates (52) on one side inward, thereby moving the two components formed by the second U-shaped frame (53), the screw rod (55), the nut seat (56) and the L-shaped block (57) inward, so that both sides of the prefabricated box beam are clamped. The third step is to lift, using a crane (1) to move the assembly formed by the installation column (2) and the connecting column (11) upward, and then move the installation plate (3) upward, so that the fastened and clamped prefabricated box beam is separated from the ground and suspended; The fourth step is to adjust. If the suspended and clamped prefabricated box girder is in an inclined state, the fourth driving device located in the sinking direction of the prefabricated box girder is used to drive the corresponding winding wheel (23) to rotate, thereby winding the corresponding rope (24), so that the corresponding auxiliary column (25) moves up, and then the suspended and clamped prefabricated box girder is leveled. If the suspended and clamped prefabricated box girder is in a horizontal state, the next step is directly performed; The fifth step is hoisting. The crane (1) is used to continue to move the clamped and horizontal prefabricated box girder upward, and the prefabricated box girder is moved to the upper side of the corresponding pier. If the prefabricated box girder and the corresponding pier are in a linear offset state, the second driving device and the screw (55) are used to move the nut seat (56) forward and backward, and then the L-shaped block (57) is moved forward and backward, so that the clamped prefabricated box girder is moved forward and backward to a suitable position, and then the prefabricated box girder is placed on the upper end of the corresponding pier. If the prefabricated box girder and the corresponding pier are in a straight position, the prefabricated box girder is directly placed on the upper end of the corresponding pier.

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