Bridge arch rib mounting and hoisting equipment

Abstract

The invention discloses bridge arch rib mounting and hoisting equipment, and belongs to the field of bridge construction. The equipment comprises a mounting frame, the mounting frame is connected to a lifting hook of a crane body in a lifting mode, a first storage roller and a second storage roller are rotationally connected to the two sides of the mounting frame correspondingly, and a first lifting rope and a second lifting rope are connected to the first storage roller and the second storage roller in a winding mode correspondingly; the ends of the first storage roller and the second storage roller are connected with a driving wheel and a driven wheel correspondingly, the end, facing the first storage roller, of the inclination adjusting plate is warped upwards, the side, located on the warped arch rib, of the mounting frame is connected with a balance block through an electric telescopic rod, and the mounting frame is provided with a gradienter used for controlling the electric telescopic rod to stretch out and draw back. The electric telescopic rod extends to enable the balance block to be far away from the mounting frame until the mounting frame is in a horizontal state; when the device is hoisted, the inclination of the arch rib does not need to be adjusted, the arch rib can be adjusted to the needed inclination of the splicing position in a self-adaptive mode, and the convenience of arch rib installation is improved.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, in particular to a bridge arch rib installation and hoisting device. Background Art

[0002] In bridge construction, arch ribs are an important part of the bridge structure, and their installation accuracy and efficiency directly affect the engineering quality and construction period of the entire bridge. Traditional lifting equipment usually uses cranes to install arch ribs when building bridges that are not large.

[0003] When hoisting the arch rib, the existing crane usually uses a hook and a rope to simply hoist the arch rib. Since the arch rib needs to have a certain inclination when assembled, the simple hoisting of the arch rib by the crane makes it inconvenient to adjust the inclination of the arch rib later. In order to ensure that the arch rib can be in an inclined state when hoisted, the existing device needs to consider the position of the hoisting arch rib and the length of the rope before hoisting, which reduces the speed of hoisting the arch rib and prolongs the construction period. Summary of the invention

[0004] The purpose of the present invention is to provide a bridge arch rib installation and hoisting device, which has the advantage of being able to automatically adjust the arch rib inclination to a required installation state, thereby solving the problem of inconvenience in adjusting the arch rib inclination in existing devices.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bridge arch rib installation and hoisting device, comprising a mounting frame, the mounting frame is hoisted to a hook of a crane body, a vertically movable mounting plate is connected to the lower part of the mounting frame, a slope adjustment plate is hinged to the lower part of the mounting plate, a first storage roller and a second storage roller are rotatably connected to the two sides of the mounting frame, a first lifting rope and a second lifting rope are respectively wound around the first storage roller and the second storage roller, and the ends of the first lifting rope and the second lifting rope are connected to lifting rings for hoisting the arch rib;

[0006] The ends of the first and second storage rollers are respectively connected with a driving wheel and a driven wheel, the driven wheel can rotate relative to the second storage roller, a belt is connected between the driving wheel and the driven wheel, the inclination adjustment plate is tilted upward toward one end of the first storage roller, and the second storage roller is driven to rotate synchronously when the first storage roller rotates, and the driven wheel does not rotate relative to the second storage roller, so that the first suspension rope and the second suspension rope are synchronously stored so that the arch rib approaches the inclination adjustment plate, and after the arch rib approaches the inclination adjustment plate, the arch rib first contacts the sinking end of the inclination adjustment plate, so that the driven wheel rotates relative to the second storage roller, so that the second suspension rope stops being stored and the first suspension rope continues to be stored so that the arch rib fits the lower surface of the inclination adjustment plate, and the first storage roller stops rotating;

[0007] A balancing block is connected to the mounting frame at the upturned side of the arch rib via an electric telescopic rod, and a spirit level for controlling the extension and retraction of the electric telescopic rod is provided on the mounting frame. When the mounting frame tilts toward the downward swing direction of the inclination adjustment plate, the electric telescopic rod extends to move the balancing block away from the mounting frame until the mounting frame is in a horizontal state and then stops extending.

[0008] Preferably, a first protrusion is provided at the end of the second storage roller, a through hole is provided in the middle of the driven wheel, a second protrusion is provided on the inner wall of the through hole, an arc-shaped hydraulic rod is connected between the first protrusion and the second protrusion, a cylinder body of the arc-shaped hydraulic rod is connected to the first protrusion, a flow channel connected to the arc-shaped hydraulic rod is provided in the second storage roller and the first protrusion, a pipe connected to the flow channel is coaxially connected to the second storage roller, a first pressure valve is provided on the pipe, and when the arch rib contacts the sinking end of the inclination adjustment plate, the rotation of the second storage roller is blocked, so that the driven wheel can rotate relative to the second storage roller, so that the arc-shaped hydraulic rod can be contracted, so that the pressure of the hydraulic oil discharged by the arc-shaped hydraulic rod exceeds the pressure limit of the first pressure valve.

[0009] Preferably, the middle end of the pipeline is fixedly connected to the upper surface of the slope adjustment plate, the pipeline is connected with a first valve and a second valve, the first valve is connected to the sinking end of the slope adjustment plate, the second valve is connected to the upturned end of the slope adjustment plate, and the first pressure valve is arranged on the pipeline between the first valve and the second storage roller;

[0010] In an initial state, the first valve is in a closed state and the second valve is in an open state. When the arch rib contacts the sinking end of the inclination adjustment plate, the valve stem of the first valve is squeezed to open the first valve, so that the hydraulic oil in the arc-shaped hydraulic rod can be discharged. When the first storage roller continues to rotate, the arch rib adheres to the lower surface of the inclination adjustment plate and squeezes the valve stem of the second valve to close the second valve, so that the first storage roller and the second storage roller continue to rotate synchronously to keep the arch rib in an inclined state.

[0011] Preferably, the upper surface of the mounting plate is connected to an oil box, a slide plate is slidably connected inside the oil box, the slide plate is fitted against the inner wall of the oil box, a tension spring is connected between the slide plate and the bottom wall of the oil box, and the pipeline is connected to the space in the oil box below the slide plate.

[0012] Preferably, a straight hydraulic rod is connected between the mounting frame and the mounting plate, an oil pipe is connected between the straight hydraulic rod and the space in the oil box located below the slide plate, a second pressure valve is arranged on the oil pipe, and after the arch rib is attached to the lower surface of the inclination adjustment plate, the first lifting rope and the second lifting rope continue to be stored so that the arch rib pushes the mounting plate to squeeze the straight hydraulic rod to shorten so that the mounting plate is close to the mounting frame;

[0013] A motor is connected to the mounting frame, the first storage roller is connected to the output end of the motor, a sensor for detecting the distance between the mounting frame and the mounting plate is provided on the mounting plate, and the motor stops running after the sensor detects that the mounting plate is close to the mounting frame.

[0014] Preferably, a rotating shaft is connected to the middle of the inclination adjustment plate, a rotating seat matching the rotating shaft is connected to the lower surface of the mounting plate, a nut is threadedly connected to the end of the rotating shaft, and the nut abuts against the rotating seat.

[0015] Preferably, the top of the mounting frame is rotatably connected to a hinged rod, the middle of the hinged rod is fixedly connected to a lifting block, the lifting block is lifted to the hook of the crane body, and after the mounting plate is moved up, the hinged rod is locked to the mounting frame.

[0016] Preferably, the mounting frame is connected to a swinging Z-frame, the top of the Z-frame is connected to a locking block, and when the mounting plate moves up, it can push the lower part of the Z-frame to make the Z-frame swing, so that the locking block abuts against the hinge rod.

[0017] Preferably, anti-slip grooves are provided on the contact surfaces of the locking block and the hinge rod.

[0018] Preferably, a counterweight block is connected to the lower portion of the Z-shaped frame, and when the mounting plate is away from the Z-shaped frame, the Z-shaped frame is pulled and swung by the counterweight block so that the locking block is away from the hinge rod.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention hoists the mounting frame on the hook of the crane body, and then installs the hoisting ring on the arch rib, adjusts the inclination of the inclination adjustment plate according to the position where the arch rib needs to be installed, so that the inclination angle of the inclination adjustment plate is equal to the inclination of the arch rib after installation, and then controls the first storage roller and the second storage roller to rotate to store the first suspension rope and the second suspension rope, so that the first suspension rope and the second suspension rope are shortened, so that the arch rib moves up and approaches the inclination adjustment plate, and when the arch rib contacts the sinking end of the inclination adjustment plate, the driven wheel rotates relative to the second storage roller, so that the second storage roller no longer rotates, so that the second suspension rope no longer shortens, and the first suspension rope continues to be stored and shortened, so that the arch rib can be tilted, and as the first suspension rope continues to shorten, the arch rib can fit on the lower surface of the inclination adjustment plate. , so that the inclination of the arch rib is equal to that of the inclination adjustment plate. After the arch rib fits the lower surface of the inclination adjustment plate, the level meter starts and obtains the inclination angle of the mounting frame, and transmits the inclination angle of the mounting frame to the control system. After obtaining the inclination angle of the mounting frame, the control system controls the electric telescopic rod to extend, so that the balancing block is away from the mounting frame, so that after the arch rib is tilted, the inclination angle of the mounting frame is adjusted to a horizontal state by the balancing block, keeping the arch rib at the required inclination for assembly, so that the crane rope can be continuously released or stored to enable the arch rib to be moved to the assembly position without adjusting the inclination of the arch rib again. Moreover, when the arch rib is initially hoisted, there is no need to consider the hoisting position and the length of the hoisting rope. The arch rib can be adaptively adjusted to the required inclination of the assembly position, thereby increasing the convenience of arch rib installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the mounting frame of the present invention;

[0023] Figure 3 This is a schematic diagram of the state of the arch rib after tilting of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the driven wheel of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the slope adjustment plate of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the oil box of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the pipeline of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the Z-shaped frame of the present invention.

[0029] In the figure: 1. crane body; 11. boom; 12. crane rope; 13. hook; 2. mounting frame; 201. balance block; 21. motor; 22. first receiving roller; 221. first lifting rope; 23. second receiving roller; 231. first protrusion; 232. second lifting rope; 24. driving wheel; 25. driven wheel; 251. second protrusion; 26. belt; 27. arc hydraulic rod; 28. lifting ring; 3. mounting plate; 31. pipeline; 32. first pressure valve; 33. first valve; 34. second valve; 35. oil box; 36. slide plate; 37. tension spring; 4. straight hydraulic rod; 41. oil pipe; 42. second pressure valve; 43. inclination adjustment plate; 44. nut; 5. lifting block; 51. hinged rod; 52. connecting seat; 53. Z-frame; 54. locking block; 55. counterweight. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1, as Figure 1-Figure 8A bridge arch rib installation and hoisting device comprises a mounting frame 2, the mounting frame 2 is hoisted to a hook 13 of a crane body 1, a vertically movable mounting plate 3 is connected to the lower part of the mounting frame 2, a slope adjustment plate 43 is hinged to the lower part of the mounting plate 3, a first receiving roller 22 and a second receiving roller 23 are rotatably connected to the two sides of the mounting frame 2, a first lifting rope 221 and a second lifting rope 232 are respectively wound around the first receiving roller 22 and the second receiving roller 23, and the ends of the first lifting rope 221 and the second lifting rope 232 are both connected to a lifting ring 28 for hoisting the arch rib; a driving wheel 24 and a driven wheel 25 are respectively connected to the ends of the first receiving roller 22 and the second receiving roller 23, the driven wheel 25 can rotate relative to the second receiving roller 23, a belt 26 is transmission-connected between the driving wheel 24 and the driven wheel 25, the slope adjustment plate 43 is tilted upward toward one end of the first receiving roller 22, and the first receiving roller 22 drives the driven wheel 25 to rotate when the first receiving roller 22 rotates. The second storage roller 23 rotates synchronously, and the driven wheel 25 does not rotate relative to the second storage roller 23, so that the first suspension rope 221 and the second suspension rope 232 are stored synchronously so that the arch rib approaches the inclination adjustment plate 43, and, after the arch rib approaches the inclination adjustment plate 43, the arch rib first contacts the sinking end of the inclination adjustment plate 43, so that the driven wheel 25 rotates relative to the second storage roller 23, so that the second suspension rope 232 stops storing and the first suspension rope 221 continues to store so that the arch rib fits the lower surface of the inclination adjustment plate 43, and the first storage roller 22 stops rotating; the side of the mounting frame 2 where the arch rib is upturned is connected with a balancing block 201 through an electric telescopic rod, and the mounting frame 2 is provided with a spirit level for controlling the extension and retraction of the electric telescopic rod. When the mounting frame 2 tilts toward the downward swing direction of the inclination adjustment plate 43, the electric telescopic rod is extended to make the balancing block 201 move away from the mounting frame 2 until the mounting frame 2 is in a horizontal state and then stops extending.

[0032] The working mechanism of the bridge arch rib installation hoisting equipment provided in this embodiment is as follows:

[0033] In this embodiment, the crane rope 12 is in a released state, the balancing block 201 is attached to the mounting frame 2 when the mounting frame 2 is unloaded, and the mounting frame 2 is in a horizontal state. When in use, the mounting frame 2 is hoisted on the hook 13 of the crane body 1, and then the two lifting rings 28 are installed on the arch rib. When installing, the two lifting rings are installed on both sides of the middle of the arch rib in a substantially symmetrical position. The inclination of the inclination adjustment plate 43 is adjusted according to the position where the arch rib needs to be installed, so that the inclination angle of the inclination adjustment plate 43 is consistent with the arch rib. The inclination of the ribs after installation is equal, and then the first storage roller 22 and the second storage roller 23 are controlled to rotate to store the first suspension rope 221 and the second suspension rope 232, so that the first suspension rope 221 and the second suspension rope 232 are shortened, so that the arch rib moves up and approaches the inclination adjustment plate 43. When the arch rib contacts the sinking end of the inclination adjustment plate 43, the driven wheel 25 rotates relative to the second storage roller 23, so that the second storage roller 23 no longer rotates, so that the second suspension rope 232 is no longer shortened, and the first suspension rope 2 21 continues to be stored and shortened, so that the arch rib can be tilted. As the first lifting rope 221 continues to shorten, the arch rib can fit on the lower surface of the inclination adjustment plate 43, so that the inclination of the arch rib is equal to that of the inclination adjustment plate 43. After the arch rib fits the lower surface of the inclination adjustment plate 43, the spirit level is started and obtains the inclination angle of the mounting frame 2, and transmits the inclination angle of the mounting frame 2 to the control system. After obtaining the inclination angle of the mounting frame 2, the control system controls the electric telescopic rod to extend, so that the balancing block 201 is away from the mounting frame 2, so that after the arch rib is tilted, the inclination angle of the mounting frame 2 is adjusted to a horizontal state by the balancing block 201, and the arch rib is kept at the required inclination for assembly, so that the crane rope 12 can be continuously released or stored afterwards so that the arch rib can be moved to the assembly position without adjusting the inclination of the arch rib again. Moreover, when the arch rib is initially hoisted, there is no need to adjust the hoisting position and the length of the lifting rope overly carefully. The arch rib can be adaptively adjusted to the required inclination of the assembly position, thereby increasing the convenience of arch rib installation.

[0034] A first protrusion 231 is provided at the end of the second storage roller 23, a through hole is provided in the middle of the driven wheel 25, and a second protrusion 251 is provided on the inner wall of the through hole, an arc-shaped hydraulic rod 27 is connected between the first protrusion 231 and the second protrusion 251, and the cylinder body of the arc-shaped hydraulic rod 27 is connected to the first protrusion 231, and a flow channel connected to the arc-shaped hydraulic rod 27 is provided in the second storage roller 23 and the first protrusion 231. A pipe 31 connected to the flow channel is coaxially connected to the second storage roller 23, and a first pressure valve 32 is provided on the pipe 31. When the arch rib contacts the sinking end of the inclination adjustment plate 43, the rotation of the second storage roller 23 is blocked, so that the driven wheel 25 can rotate relative to the second storage roller 23, so that the arc-shaped hydraulic rod 27 contracts, so that the pressure of the hydraulic oil discharged by the arc-shaped hydraulic rod 27 breaks through the pressure limit of the first pressure valve 32.

[0035] The middle end of the pipeline 31 is fixedly connected to the upper surface of the inclination adjustment plate 43, and the first valve 33 and the second valve 34 are connected to the pipeline 31. The first valve 33 is connected to the sinking end of the inclination adjustment plate 43, and the second valve 34 is connected to the upturned end of the inclination adjustment plate 43. The first pressure valve 32 is arranged on the pipeline 31 between the first valve 33 and the second storage roller 23; in the initial state, the first valve 33 is in a closed state and the second valve 34 is in an open state. When the arch rib contacts the sinking end of the inclination adjustment plate 43, the valve stem of the first valve 33 is squeezed to open the first valve 33, so that the hydraulic oil in the arc hydraulic rod 27 can be discharged. When the first storage roller 22 continues to rotate, the arch rib fits the lower surface of the inclination adjustment plate 43 and squeezes the valve stem of the second valve 34 to close the second valve 34, so that the first storage roller 22 and the second storage roller 23 continue to rotate synchronously to keep the arch rib in an inclined state.

[0036] An oil box 35 is connected to the upper surface of the mounting plate 3, a slide plate 36 is slidably connected inside the oil box 35, the slide plate 36 fits against the inner wall of the oil box 35, a tension spring 37 is connected between the slide plate 36 and the bottom wall of the oil box 35, and the pipeline 31 is connected to the space below the slide plate 36 in the oil box 35.

[0037] Regarding how the arch rib becomes inclined after being lifted, specifically:

[0038] When the motor 21 is started, it drives the first collection roller 22 to rotate. At the same time, the driving wheel 24 connected to the first collection roller 22 rotates. At this time, the driving wheel 24 drives the driven wheel 25 to rotate through the belt 26. At this time, the first collection roller 22 and the second collection roller 23 rotate synchronously, so that the first suspension rope 221 and the second suspension rope 232 are synchronously collected, so that the arch rib rises smoothly. As the arch rib rises, the arch rib can first contact the sinking end of the inclination adjustment plate 43, and the first valve 33 is set at the sinking end of the inclination adjustment plate 43, so that the arch rib first First, the valve stem of the first valve 33 is squeezed, and the first valve 33 is opened, while the valve stem of the second valve 34 is not squeezed at this time and remains in an open state. Then, at this time, the hydraulic oil in the arc-shaped hydraulic rod 27 is only blocked by the first pressure valve 32, and the belt 26 continues to be transmitted to the driven wheel 25, but the arch rib near the second suspension rope 232 is blocked by the inclination adjustment plate 43, so that the driven wheel 25 can compress the arc-shaped hydraulic rod 27 to shorten so that the driven wheel 25 rotates relatively to the second storage roller 23, and then the second suspension rope 232 is no longer stored, while the first storage roller 22 is still in a rotating state, and the arch rib can swing toward the same inclination as the inclination adjustment plate 43. When the arch rib swings to the same inclination as the inclination adjustment plate 43, the arch rib can squeeze the valve stem of the second valve 34 at the upturned end of the inclination adjustment plate 43, so that the second valve 34 changes from an open state to a closed state, so that the hydraulic oil in the arc hydraulic rod 27 can no longer be discharged, that is, the arc hydraulic rod 27 will not be shortened at this time, so that the driven wheel 25 is no longer relative to the second storage roller 2 3 rotates, at this time, the first lifting rope 221 and the second lifting rope 232 are shortened synchronously again, so that the arch rib is adjusted to the same inclination as the inclination adjustment plate 43 and then continues to move upward, and the arch rib that continues to move upward is transmitted to the mounting plate 3 through the inclination adjustment plate 43, so that the mounting plate 3 squeezes the straight hydraulic rod 4 to shorten, so that the mounting plate 3 and the mounting frame 2 are close to each other at this time, and the sensor detects that the mounting plate 3 and the mounting frame 2 are close to the shortest distance of the stroke, and controls the motor 21 to stop running, and the motor 21 has a self-locking function, so that the arch rib can maintain its inclination unchanged at this time.

[0039] A straight hydraulic rod 4 is connected between the mounting frame 2 and the mounting plate 3, and an oil pipe 41 is connected between the straight hydraulic rod 4 and the lower space of the slide plate 36 in the oil box 35, and a second pressure valve 42 is arranged on the oil pipe 41. After the arch rib is attached to the lower surface of the inclination adjustment plate 43, the first lifting rope 221 and the second lifting rope 232 continue to be retracted so that the arch rib pushes the mounting plate 3 to squeeze the straight hydraulic rod 4 to shorten so that the mounting plate 3 approaches the mounting frame 2; a motor 21 is connected to the mounting frame 2, and a first retracting roller 22 is connected to the output end of the motor 21; a sensor for detecting the distance between the mounting frame 2 and the mounting plate 3 is arranged on the mounting plate 3, and the motor 21 stops running after the sensor detects that the mounting plate 3 approaches the mounting frame 2.

[0040] A rotating shaft is connected to the middle of the inclination adjustment plate 43 , a rotating seat matched with the rotating shaft is connected to the lower surface of the mounting plate 3 , a nut 44 is threadedly connected to the end of the rotating shaft, and the nut 44 abuts against the rotating seat.

[0041] The top of the mounting frame 2 is rotatably connected to a hinged rod 51 , the middle of the hinged rod 51 is fixedly connected to a hoisting block 5 , and the hoisting block 5 is hoisted to a hook 13 of the crane body 1 . After the mounting plate 3 is moved upward, the hinged rod 51 is locked to the mounting frame 2 .

[0042] A swinging Z-shaped frame 53 is connected to the mounting frame 2 , and a locking block 54 is connected to the top of the Z-shaped frame 53 . When the mounting plate 3 moves upward, it can push the lower part of the Z-shaped frame 53 to make the Z-shaped frame 53 swing, so that the locking block 54 abuts against the hinge rod 51 .

[0043] Anti-slip grooves are provided on the contact surfaces of the locking block 54 and the hinge rod 51 .

[0044] A counterweight 55 is connected to the lower part of the Z-shaped frame 53 . When the mounting plate 3 moves away from the Z-shaped frame 53 , the Z-shaped frame 53 is pulled and swung by the counterweight 55 so that the locking block 54 moves away from the hinge rod 51 .

[0045] Regarding how to lock the relative positions of the mounting frame 2 and the lifting block 5, specifically:

[0046] When the straight hydraulic rod 4 is shortened, the internal hydraulic oil is discharged through the oil pipe 41. The pressure value of the second pressure valve 42 arranged on the oil pipe 41 is higher than that of the first pressure valve 32, thereby ensuring that the straight hydraulic rod 4 will not shorten when the inclination of the arch rib is not adjusted properly. The first pressure valve 32 makes the hydraulic oil discharge of the arc-shaped hydraulic rod 27 have resistance, thereby preventing the second suspension rope 232 from being pulled by the weight of the arch rib and being released;

[0047] The ends of the pipeline 31 and the oil pipe 41 are both connected to the oil box 35 to ensure that the discharged hydraulic oil can be collected. The slide plate 36 and the tension spring 37 work together to protect the hydraulic oil collected in the oil box 35 to prevent debris from falling in. The tension spring 37 enables the slide plate 36 to rise adaptively according to the discharge amount of the hydraulic oil, ensuring that the oil box 35 has enough space to accommodate the hydraulic oil. When the straight hydraulic rod 4 and the arc hydraulic rod 27 need to be reset, the pipeline 31 is unblocked, and pressure is applied to the slide plate 36 to make the hydraulic oil flow back, so that the straight hydraulic rod 4 and the arc hydraulic rod 27 are reset;

[0048] When the mounting plate 3 moves upward, the mounting plate 3 can push the bottom of the Z-frame 53, so that the straight section at the bottom of the Z-frame 53 is lifted and becomes horizontal. At this time, the bottom and the top of the Z-frame 53 are both horizontal, so that the locking block 54 connected to the top of the Z-frame 53 is close to the hinge rod 51. Since the contact surfaces of the locking block 54 and the hinge rod 51 are both provided with anti-slip grooves, the hinge rod 51 is locked and does not rotate relative to the mounting frame 2. Since the hinge rod 51 is fixedly connected to the lifting block 5, the lifting block 5 does not swing relative to the mounting frame 2. When the Z-frame 53 swings, the arch rib has been adjusted to an inclined state, and the balance block 201 is in a moved state, so that the mounting frame 2 maintains a horizontal state, ensuring that when the subsequent boom 11 continues to move, the mounting frame 2 will no longer swing relative to the lifting block 5, thereby increasing the swing resistance of the hoisted arch rib.

[0049] The mounting frame 2 is connected with a connecting seat 52, and the Z-shaped frame 53 is hinged to the connecting seat 52, and the hinged part is located in the middle of the vertical section of the Z-shaped frame 53 and faces upward. In addition, since a counterweight block 55 is arranged at the bottom of the Z-shaped frame 53, when the Z-shaped frame 53 is not supported by the mounting plate 3, the gravity of the counterweight block 55 causes the Z-shaped frame 53 to swing, thereby causing the locking block 54 to move away from the hinge rod 51. At this time, the hinge rod 51 can swing relative to the mounting frame 2, ensuring that when the boom 11 swings up and down, the mounting frame 2 can swing relative to the lifting block 5, thereby ensuring that the first lifting rope 221 and the second lifting rope 232 are subjected to substantially the same pulling force. When the first lifting rope 221 and the second lifting rope 232 can no longer be stored, the level meter is activated to adjust the mounting frame 2 to a horizontal state. In addition, the straight hydraulic rod 4 has a sufficient length to ensure that there is a sufficient gap between the upward end of the arch rib and the balance block 201, thereby ensuring that there is sufficient space for subsequent arch rib installation operations.

[0050] The angle of the inclination adjustment plate 43 is adjusted before the arch rib is hoisted. The nut 44 is rotated to allow the inclination adjustment plate 43 to swing relative to the mounting plate 3 to adjust the angle of the mounting plate 3 to the inclination of the arch rib to be installed. After adjustment, the nut 44 is tightened to maintain the inclination of the inclination adjustment plate 43.

[0051] Embodiment 2, as Figure 1-Figure 3 , which is different from Example 1, is that a laser rangefinder for detecting the distance between the mounting frame 2 and the top of the boom 11 is provided on the mounting frame 2 .

[0052] In this embodiment, if the wind force in the construction environment is strong and the arch rib may be swung by the wind, the crane rope 12 is in a released state at this time, and the first suspension rope 221 and the second suspension rope 232 are also in a released state. First, the scheme in Example 1 is used to adjust the arch rib to the required tilt state, and the balance block 201 is moved so that the mounting frame 2 is in a horizontal state. At this time, the first suspension rope 221 and the second suspension rope 232 are in a fully stored state, and then the release length of the crane rope 12 is shortened and the angle and length of the boom 11 are adjusted so that the hoisted arch rib can be in the assembly position. At this time, since the release length of the crane rope 12 is shortened, the swing amplitude of the arch rib caused by the wind is greatly reduced. Compared with the existing device, assembly operations can be carried out under high wind conditions.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge arch rib installation and hoisting device, comprising a mounting frame (2), wherein the mounting frame (2) is hoisted to a hook (13) of a crane body (1), and characterized in that: The lower part of the mounting frame (2) is connected to a vertically movable mounting plate (3), the lower part of the mounting plate (3) is hinged with a slope adjustment plate (43), and the first and second storage rollers (22 and 23) are rotatably connected to the two sides of the mounting frame (2), and the first and second storage rollers (22 and 23) are respectively wound with a first lifting rope (221) and a second lifting rope (232), and the ends of the first and second lifting ropes (221 and 232) are both connected to lifting rings (28) for lifting the arch ribs; The ends of the first receiving roller (22) and the second receiving roller (23) are respectively connected with a driving wheel (24) and a driven wheel (25); the driven wheel (25) can rotate relative to the second receiving roller (23); a belt (26) is connected between the driving wheel (24) and the driven wheel (25); the inclination adjustment plate (43) is tilted upward toward one end of the first receiving roller (22); when the first receiving roller (22) rotates, the second receiving roller (23) is driven to rotate synchronously; the driven wheel (25) does not rotate relative to the second receiving roller (23). The first lifting rope (221) and the second lifting rope (232) are moved so that the first lifting rope (221) and the second lifting rope (232) are synchronously retracted so that the arch rib is close to the inclination adjustment plate (43), and after the arch rib is close to the inclination adjustment plate (43), the arch rib first contacts the sinking end of the inclination adjustment plate (43), so that the driven wheel (25) rotates relative to the second retracting roller (23), so that the second lifting rope (232) stops being retracted and the first lifting rope (221) continues to be retracted so that the arch rib is attached to the lower surface of the inclination adjustment plate (43), and the first retracting roller (22) stops rotating; A balancing block (201) is connected to the mounting frame (2) on the side of the arch rib that is tilted upward via an electric telescopic rod. A level gauge for controlling the extension and retraction of the electric telescopic rod is provided on the mounting frame (2). When the mounting frame (2) is tilted toward the downward swing direction of the inclination adjustment plate (43), the electric telescopic rod is extended to move the balancing block (201) away from the mounting frame (2) until the mounting frame (2) is in a horizontal state and stops extending.

2. The bridge arch rib installation and hoisting equipment according to claim 1 is characterized in that: The end of the second storage roller (23) is provided with a first protrusion (231), the middle of the driven wheel (25) is provided with a through hole, the inner wall of the through hole is provided with a second protrusion (251), an arc-shaped hydraulic rod (27) is connected between the first protrusion (231) and the second protrusion (251), the cylinder body of the arc-shaped hydraulic rod (27) is connected to the first protrusion (231), and a flow channel communicating with the arc-shaped hydraulic rod (27) is provided in the second storage roller (23) and the first protrusion (231). The second receiving roller (23) is coaxially connected to a pipe (31) in communication with the flow channel, and the pipe (31) is provided with a first pressure valve (32). When the arch rib contacts the sinking end of the inclination adjustment plate (43), the rotation of the second receiving roller (23) is blocked, so that the driven wheel (25) can rotate relative to the second receiving roller (23), so that the arc-shaped hydraulic rod (27) contracts, so that the pressure of the hydraulic oil discharged by the arc-shaped hydraulic rod (27) exceeds the pressure limit of the first pressure valve (32).

3. The bridge arch rib installation and hoisting equipment according to claim 2 is characterized in that: The middle end of the pipeline (31) is fixedly connected to the upper surface of the slope adjustment plate (43); the pipeline (31) is connected to a first valve (33) and a second valve (34); the first valve (33) is connected to the downward end of the slope adjustment plate (43); the second valve (34) is connected to the upward end of the slope adjustment plate (43); the first pressure valve (32) is arranged on the pipeline (31) between the first valve (33) and the second storage roller (23); In an initial state, the first valve (33) is in a closed state and the second valve (34) is in an open state. When the arch rib contacts the sinking end of the inclination adjustment plate (43), the valve stem of the first valve (33) is squeezed to open the first valve (33), so that the hydraulic oil in the arc-shaped hydraulic rod (27) can be discharged. When the first storage roller (22) continues to rotate, the arch rib is attached to the lower surface of the inclination adjustment plate (43) and squeezes the valve stem of the second valve (34), so that the second valve (34) is closed, so that the first storage roller (22) and the second storage roller (23) continue to rotate synchronously so that the arch rib maintains an inclined state.

4. The bridge arch rib installation and hoisting equipment according to claim 3 is characterized in that: The upper surface of the mounting plate (3) is connected to an oil box (35), a slide plate (36) is slidably connected inside the oil box (35), the slide plate (36) is in contact with the inner wall of the oil box (35), a tension spring (37) is connected between the slide plate (36) and the bottom wall of the oil box (35), and the pipeline (31) is connected to the space below the slide plate (36) in the oil box (35).

5. The bridge arch rib installation and hoisting equipment according to claim 4 is characterized in that: A straight hydraulic rod (4) is connected between the mounting frame (2) and the mounting plate (3); an oil pipe (41) is connected between the straight hydraulic rod (4) and the space in the oil box (35) located below the slide plate (36); a second pressure valve (42) is provided on the oil pipe (41); after the arch rib is attached to the lower surface of the inclination adjustment plate (43), the first lifting rope (221) and the second lifting rope (232) continue to be retracted so that the arch rib pushes the mounting plate (3) to squeeze the straight hydraulic rod (4) to shorten it, thereby the mounting plate (3) is close to the mounting frame (2); The mounting frame (2) is connected to a motor (21), the first storage roller (22) is connected to the output end of the motor (21), and the mounting plate (3) is provided with a sensor for detecting the distance between the mounting frame (2) and the mounting plate (3), and the motor (21) stops running after the sensor detects that the mounting plate (3) is close to the mounting frame (2).

6. The bridge arch rib installation and hoisting equipment according to claim 5 is characterized in that: The middle of the inclination adjustment plate (43) is connected to a rotating shaft, the lower surface of the mounting plate (3) is connected to a rotating seat matched with the rotating shaft, the end of the rotating shaft is threadedly connected to a nut (44), and the nut (44) abuts against the rotating seat.

7. The bridge arch rib installation and hoisting equipment according to claim 6 is characterized in that: The top of the mounting frame (2) is rotatably connected to a hinged rod (51), the middle of the hinged rod (51) is fixedly connected to a lifting block (5), the lifting block (5) is lifted to the lifting hook (13) of the crane body (1), and after the mounting plate (3) is moved upward, the hinged rod (51) is locked to the mounting frame (2).

8. The bridge arch rib installation and hoisting equipment according to claim 7 is characterized in that: The mounting frame (2) is connected to a swinging Z-shaped frame (53), the top of the Z-shaped frame (53) is connected to a locking block (54), and when the mounting plate (3) moves upward, it can push the lower part of the Z-shaped frame (53) to make the Z-shaped frame (53) swing, so that the locking block (54) abuts against the hinge rod (51).

9. The bridge arch rib installation and hoisting equipment according to claim 8, characterized in that: Anti-slip grooves are provided on the contact surfaces of the locking block (54) and the hinge rod (51).

10. The bridge arch rib installation and hoisting equipment according to claim 9, characterized in that: A counterweight (55) is connected to the lower part of the Z-shaped frame (53); when the mounting plate (3) is away from the Z-shaped frame (53), the Z-shaped frame (53) is pulled by the counterweight (55) to swing so that the locking block (54) is away from the hinge rod (51).

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