A lifting auxiliary device for bridge erection machine

Abstract

The invention discloses a lifting auxiliary device for a bridge erection machine, which relates to the technical field of bridge erection machine lifting, and comprises a winding assembly for lifting a prefabricated bridge panel and further a fine-tuning assembly for adjusting the position of a hook in a winch; the lifting auxiliary device for the bridge erection machine, during the process of bridge construction, first moves the winch to just above the position of a hook on the bridge prefabricated panel, moves the fixed hook and the rotating hook to a position in contact with the hook in the bridge prefabricated panel, separates the rotating hook from the fixed hook, so that the hook on the bridge prefabricated panel is between the fixed hook and the inner wall of the rotating hook, and then rotates the rotating hook to make it contact with the outer surface of the fixed hook, thus completing the connection between the fixed hook and the rotating hook and the hook on the bridge prefabricated panel, and solves the problem in the prior art that the process of connecting the hook in the winch with the hook on the bridge requires manual operation by an operator, which reduces the overall lifting efficiency of the winch.

Description

Technical Field

[0001] The invention relates to the technical field of bridge erection machine hoisting, in particular to a hoisting auxiliary device for a bridge erection machine. Background Art

[0002] A bridge erection machine is a special heavy-duty mechanical equipment, mainly used for hoisting and erecting work during bridge construction. It can hoist prefabricated bridge components to designated locations and accurately position and install them. Bridge erection machines play an important role in modern bridge construction, especially in highway and railway bridge construction. The winch, as a hoisting auxiliary device for the bridge erection machine, is mainly responsible for providing lifting and lowering power.

[0003] Existing winches serve as auxiliary devices of bridge erection machines. They mainly use their own wire ropes to drive the hooks to connect with the hooks on the bridge, and then lift the hooks through their own driving equipment, so as to realize the movement of the bridge. However, since the hooks on most existing winches have simple structures, the process of connecting the hooks with the hooks on the bridge requires operators to manually connect the hooks. During the manual connection process, the operator needs to make multiple adjustments and verifications to ensure that the hooks on the winch are firmly connected to the hooks on the bridge, which is time-consuming and reduces the overall lifting efficiency of the winch.

[0004] Therefore, we propose a lifting auxiliary device for a bridge erecting machine to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a lifting auxiliary device for a bridge erecting machine to solve the problem that the process of connecting the hook in the winch and the hook on the bridge proposed in the above background technology requires manual operation by the operator, which reduces the overall lifting efficiency of the winch.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lifting auxiliary device for a bridge erection machine, comprising a winding assembly for lifting a prefabricated bridge panel and further a fine-tuning assembly for adjusting the position of a hook in a winch, a connecting assembly for connecting the winch to the prefabricated bridge panel being arranged at the bottom of the fine-tuning assembly, the connecting assembly comprising a mounting block, a reinforcing plate being fixed near the center of the bottom of the mounting block, a fixed hook being fixedly installed on the outer surface of the reinforcing plate, a rotating shaft being rotatably connected inside the reinforcing plate, a rotating hook for hooking up the prefabricated bridge panel being fixedly installed on the outer surface of the rotating shaft, a first spring being arranged near both side edges on the outer surface of the rotating hook, a limiting groove being arranged near the edge on the outer surface of one side of the mounting block, a movable plate for squeezing and closing the hook in the winch being slidably connected inside the limiting groove, A tooth row is fixedly installed on the outer surface of the movable plate, and an auxiliary frame is fixedly installed on the outer surface of the other side of the mounting block. A forward and reverse motor for driving the opening and closing of the hook in the winch is fixedly installed on the outer surface of the auxiliary frame by screws; during the construction of the bridge, the winch is first moved to the top of the hook position on the prefabricated bridge plate, the fixed hook and the rotating hook are moved to the position in contact with the hook in the prefabricated bridge plate, the rotating hook is separated from the fixed hook, so that the hook on the prefabricated bridge plate is between the fixed hook and the inner wall of the rotating hook, and then the rotating hook is rotated to make it contact with the outer surface of the fixed hook, thus completing the connection between the fixed hook and the rotating hook and the hook on the prefabricated bridge plate, thereby solving the problem that the process of connecting the hook in the winch and the hook on the bridge in the prior art requires manual operation by the operator, which reduces the overall lifting efficiency of the winch.

[0007] Preferably, a rotating rod is fixedly mounted on the output end of the forward and reverse motor, a driving gear is fixedly sleeved on the outer surface of the rotating rod, a positioning rod is fixed between the relative inner walls of the mounting block, and a driven gear is rotatably sleeved on the outer surface of the positioning rod.

[0008] Preferably, the outer surface of the fixed hook is fixedly connected to the outer surface of the mounting block, one end of the two first springs is fixedly connected to the outer surface of the rotating hook, the other end of the two first springs is fixedly connected to the outer surface of the mounting block, and the outer surface of the movable plate moves through to the outside of the limiting groove.

[0009] Preferably, the outer surface of the tooth row is meshed and connected with the outer surface of the driven gear, the two ends of the rotating rod are movably penetrated to the opposite outsides of the auxiliary frame, the driving gear is arranged inside the auxiliary frame, the outer surface of the driving gear is meshed and connected with the outer surface of the driven gear, the outer surface of the driven gear penetrates into the inside of the limiting groove, and the outer surface of the driven gear is meshed and connected with the outer surface of the tooth row.

[0010] Preferably, an electromagnet is provided on the inner wall of the rotating hook, a telescopic rod is fixed inside the fixed hook near the edges on both sides, a second spring is provided on the outer surface of the two telescopic rods, an iron block for strengthening the firmness of the hook in the winch is fixedly installed between one ends of the two telescopic rods, one end of the two second springs is fixedly connected to the inner wall of the fixed hook, and the other end of the two second springs is fixedly connected to the outer surface of the iron block; when the fixed hook and the rotating hook move to the top of the hook on the bridge prefabricated board, the camera is first started, and the positional relationship between the hook on the prefabricated board and the fixed hook and the rotating hook on the winch is analyzed through images, and then a laser rangefinder is used to detect the specific deviation angle between the fixed hook and the rotating hook and the hook on the bridge prefabricated board, and then the driving motor is started to drive the fixed hook and the rotating hook to rotate until the connection between the fixed hook and the rotating hook and the position of the hook on the bridge prefabricated board reaches the standard position, which is convenient for the later connection between the winch and the bridge prefabricated board.

[0011] Preferably, the fine-tuning assembly includes a mounting plate, a reinforcing rib for improving the stability of the winch is fixedly installed on the top of the mounting plate near the outer edge, a driving motor is fixedly installed on the top of the mounting plate near the center by screws, and the output end of the driving motor is fixedly connected to the driving shaft.

[0012] Preferably, the bottom end of the driving shaft is movable and extends to the outside of the mounting plate, a turntable is fixedly sleeved on the outer surface of the driving shaft near the bottom end, a slot is provided on the outer surface of the mounting plate, and the outer surface of the turntable is rotatably connected to the inner wall of the slot.

[0013] Preferably, a camera for real-time monitoring of the position of the hook in the winch is arranged near one side of the bottom of the turntable, and a laser rangefinder for monitoring the distance between the hook in the winch and the hook on the prefabricated bridge deck is arranged near the other side of the bottom of the turntable, and the top of the mounting block is fixedly connected to the bottom of the turntable.

[0014] Preferably, the winding assembly includes a main frame, a stepper motor is fixedly mounted on the outer surface of the main frame by screws, an output end of the stepper motor is fixedly connected to a drive rod, and both ends of the drive rod are movably penetrated to opposite exteriors of the main frame.

[0015] Preferably, a winding roller is fixedly sleeved on the outer surface of the driving rod, and the winding roller is arranged inside the main frame. A steel wire rope for lifting the prefabricated bridge deck is wound on the outer surface of the winding roller, and the bottom end of the steel wire rope is fixedly connected to the top of the reinforcing rib; in order to ensure the firmness of the connection between the winch and the prefabricated bridge deck, when the rotating hook is in tight contact with the outer surface of the fixed hook, the electromagnet is electrically connected to the external power supply, driving the two second springs to extend, thereby driving the telescopic rod to extend until the outer surface of the electromagnet is in tight contact with the outer surface of the iron block, thereby further improving the firmness of the connection between the fixed hook and the rotating hook.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the process of bridge construction, the present invention first moves the winch to the top of the hook position on the bridge prefabricated plate, moves the fixed hook and the rotating hook to the position in contact with the hook in the bridge prefabricated plate, separates the rotating hook from the fixed hook, places the hook on the bridge prefabricated plate between the inner wall of the fixed hook and the rotating hook, and then rotates the rotating hook to contact with the outer surface of the fixed hook, thus completing the connection between the fixed hook and the rotating hook and the hook on the bridge prefabricated plate, solving the problem in the prior art that the process of connecting the hook in the winch with the hook on the bridge requires manual operation by the operator, which reduces the overall lifting efficiency of the winch.

[0018] 2. In the present invention, when the fixed hook and the rotating hook move to the top of the hook on the bridge prefabricated board, the camera is first started, and the positional relationship between the hook on the prefabricated board and the fixed hook and the rotating hook on the winch is analyzed through images, and then the laser rangefinder is used to detect the specific deviation angle between the fixed hook and the rotating hook and the hook on the bridge prefabricated board, and then the driving motor is started to drive the fixed hook and the rotating hook to rotate until the connection between the fixed hook and the rotating hook and the position of the hook on the bridge prefabricated board reaches the standard position, which is convenient for the subsequent connection between the winch and the bridge prefabricated board.

[0019] 3. In order to ensure the firmness of the connection between the winch and the prefabricated bridge plate, the present invention electrically connects the electromagnet to an external power source when the rotating hook is in tight contact with the outer surface of the fixed hook, driving the two second springs to extend, thereby driving the telescopic rod to extend until the outer surface of the electromagnet is in tight contact with the outer surface of the iron block, thereby further improving the firmness of the connection between the fixed hook and the rotating hook. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front perspective view of a lifting auxiliary device for a bridge erecting machine according to the present invention;

[0021] Figure 2 A side perspective view of a lifting auxiliary device for a bridge erecting machine according to the present invention;

[0022] Figure 3 It is a partial three-dimensional diagram of a winding assembly of a lifting auxiliary device for a bridge erecting machine according to the present invention;

[0023] Figure 4 It is a partial three-dimensional diagram of a fine-adjustment component of a lifting auxiliary device for a bridge erecting machine of the present invention;

[0024] Figure 5 A three-dimensional diagram of a turntable portion of a lifting auxiliary device for a bridge erecting machine according to the present invention;

[0025] Figure 6 It is a perspective view of a cross-section of a mounting plate structure of a bridge erection machine hoisting auxiliary device according to the present invention;

[0026] Figure 7 It is a partial three-dimensional diagram of a connection assembly of a lifting auxiliary device for a bridge erecting machine according to the present invention;

[0027] Figure 8 It is a perspective view of a cross-section of a mounting block structure of a bridge erection machine hoisting auxiliary device according to the present invention;

[0028] Fig. 9 A three-dimensional diagram of a moving plate portion of a lifting auxiliary device for a bridge erecting machine according to the present invention;

[0029] Fig.10 A sectional perspective view of a fixed hook portion of a lifting auxiliary device for a bridge erecting machine according to the present invention

[0030] Fig.11 This is a schematic diagram of the angles between a fixed hook and a rotating hook of a lifting auxiliary device for a bridge erecting machine and a hook in a prefabricated bridge panel of the present invention.

[0031] In the figure:

[0032] 1. Winding assembly; 101. Main frame; 102. Stepper motor; 103. Driving rod; 104. Winding roller; 105. Wire rope; 2. Fine-tuning assembly; 201. Mounting plate; 202. Reinforcing ribs; 203. Driving motor; 204. Driving shaft; 205. Turntable; 206. Slot; 207. Camera; 208. Laser rangefinder; 3. Connecting assembly; 301. Mounting block; 302. Reinforcing plate; 303. Fixed hook; 304. Rotating shaft; 305. Rotating hook; 306. First spring; 307. Limiting groove; 308. Moving plate; 309. Tooth row; 310. Auxiliary frame; 311. Forward and reverse motor; 312. Rotating rod; 313. Driving gear; 314. Positioning rod; 315. Driven gear; 4. Electromagnet; 5. Telescopic rod; 6. Second spring; 7. Iron block. DETAILED DESCRIPTION

[0033] 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 implementation regulations described 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.

[0034] See also Figure 1-11The present invention provides a technical solution: a lifting auxiliary device for a bridge erection machine, comprising a winding component 1 for lifting a prefabricated bridge panel and a fine-tuning component 2 for adjusting the position of a hook in a winch, a connecting component 3 for connecting the winch to the prefabricated bridge panel is arranged at the bottom of the fine-tuning component 2, and the connecting component 3 comprises a mounting block 301, a reinforcing plate 302 is fixed near the center of the bottom of the mounting block 301, a fixed hook 303 is fixedly installed on the outer surface of the reinforcing plate 302, a rotating shaft 304 is rotatably connected inside the reinforcing plate 302, a rotating hook 305 for hooking up the prefabricated bridge panel is fixedly installed on the outer surface of the rotating shaft 304, and the outer surface of the rotating hook 305 is provided with a second hook 305 near the edges on both sides. A spring 306 is provided on the outer surface of one side of the mounting block 301 near the edge thereof, a limiting groove 307 is provided, a movable plate 308 for squeezing and closing the hook in the hoist is slidably connected inside the limiting groove 307, a tooth row 309 is fixedly installed on the outer surface of the movable plate 308, an auxiliary frame 310 is fixedly installed on the outer surface of the other side of the mounting block 301, a forward and reverse motor 311 for driving the opening and closing of the hook in the hoist is fixedly installed on the outer surface of the auxiliary frame 310 by screws, a rotating rod 312 is fixedly installed on the output end of the forward and reverse motor 311, a driving gear 313 is fixedly sleeved on the outer surface of the rotating rod 312, a positioning rod 314 is fixed between the opposite inner walls of the mounting block 301, and the outer surface of the positioning rod 314 The surface rotating sleeve is provided with a driven gear 315, the outer surface of the fixed hook 303 is fixedly connected to the outer surface of the mounting block 301, one end of the two first springs 306 is fixedly connected to the outer surface of the rotating hook 305, the other end of the two first springs 306 is fixedly connected to the outer surface of the mounting block 301, the outer surface of the movable plate 308 is movable to penetrate to the outside of the limiting groove 307, the outer surface of the tooth row 309 is meshed with the outer surface of the driven gear 315, the two ends of the rotating rod 312 are respectively movable to penetrate to the opposite outside of the auxiliary frame 310, the driving gear 313 is arranged inside the auxiliary frame 310, the outer surface of the driving gear 313 is meshed with the outer surface of the driven gear 315, and the driven gear 31 5 penetrates into the interior of the limiting groove 307, the outer surface of the driven gear 315 is meshed and connected with the outer surface of the tooth row 309, the winding assembly 1 includes a main frame 101, the outer surface of the main frame 101 is fixedly installed with a stepper motor 102 by screws, the output end of the stepper motor 102 is fixedly connected with a driving rod 103, the two ends of the driving rod 103 are respectively movably penetrated to the opposite outside of the main frame 101, the outer surface of the driving rod 103 is fixedly sleeved with a winding roller 104, the winding roller 104 is arranged inside the main frame 101, the outer surface of the winding roller 104 is wound with a steel wire rope 105 for lifting the prefabricated bridge deck, and the bottom end of the steel wire rope 105 is fixedly connected to the top of the reinforcing rib 202.

[0035] In this embodiment, during the construction of the bridge, in order to facilitate the construction of the bridge and use the bridge erection machine to transport the bridge precast panel to the corresponding position, it is first necessary to install the winch at the relative position of the external bridge erection machine, and then move the winch to the top of the hook position on the bridge precast panel, and then start the stepper motor 102 to drive the driving rod 103 to rotate, and then drive the winding roller 104 to rotate, so that the wire rope 105 wound on the surface of the winding roller 104 is unwound downward, thereby driving the connecting component 3 to move downward until the fixed hook 303 and the rotating hook 305 move to the position in contact with the hook in the bridge precast panel, and then the forward and reverse motors 311 can be started to drive the rotating rod 312 to rotate, and then drive the driving gear 313 to rotate, thereby driving the driven gear 315 to rotate, and then drive the tooth row 309 to move toward the inside of the limiting groove 307, so that Figure 7 The movable plate 308 shown is separated from the outer surface of the rotating hook 305, and the squeezing of the rotating hook 305 is stopped. The two first springs 306 will shorten under the action of their own elastic force, driving the rotating hook 305 to rotate along the rotating shaft 304 toward the outer surface of the mounting block 301, thereby creating a larger opening between the fixed hook 303 and the rotating hook 305. Then, the stepper motor 102 can be started again through the external control system to drive the winding roller 104 to rotate, thereby driving the fixed hook 303 and the rotating hook 305 to continue to move downward until the hook on the bridge prefabricated plate is between the inner wall of the fixed hook 303 and the rotating hook 305. Then, the forward and reverse motor 311 can be started again in the reverse direction to drive the rotating rod 312 to rotate in the reverse direction, thereby driving the driving gear 313 to rotate in the reverse direction, thereby driving the driven gear 315 to rotate in the reverse direction, and finally driving the tooth row 309 to move to the outside of the limiting groove 307, thereby driving the movable plate 308 to move outward. Figure 7As shown, since the surface of the rotating hook 305 is arc-shaped, and the contact surface between the movable plate 308 and the rotating hook 305 is also arc-shaped, during the process of the movable plate 308 moving outward, the movable plate 308 gradually squeezes the rotating hook 305, so that the rotating shaft 304 drives the rotating hook 305 to rotate in the direction of the fixed hook 303. During the rotation of the rotating hook 305, the two first springs 306 are stretched and elongated until the outer surface of the rotating hook 305 contacts the outer surface of the fixed hook 303, that is, the connection between the fixed hook 303 and the rotating hook 305 and the hook on the bridge prefabricated board is completed, thereby realizing the automatic connection between the winch and the bridge prefabricated board. After the connection with the bridge prefabricated panel is completed, the stepper motor 102 can be started again to drive the driving rod 103 to rotate in the opposite direction, and then drive the winding roller 104 to rotate in the opposite direction, so as to reel in the wire rope 105, and then the fixed hook 303 and the rotating hook 305 drive the bridge prefabricated panel to move upward, so as to realize the transfer of the bridge prefabricated panel. Through the action of the connecting component 3, the winch can automatically realize the quick connection with the bridge prefabricated panel before lifting the bridge prefabricated panel, without manual connection, saving manpower, and solving the problem that the process of connecting the hook in the winch and the hook on the bridge in the prior art requires manual operation by the operator, which reduces the overall lifting efficiency of the winch.

[0036] like Figure 1-Figure 2 and Figure 4-Figure 10 As shown, the fine-tuning component 2 includes a mounting plate 201, a reinforcing rib 202 for improving the stability of the winch is fixedly installed on the top of the mounting plate 201 near the outer edge, a driving motor 203 is fixedly installed on the top of the mounting plate 201 near the center by screws, a driving shaft 204 is fixedly connected to the output end of the driving motor 203, the bottom end of the driving shaft 204 is movably penetrated to the outside of the mounting plate 201, a turntable 205 is fixedly sleeved on the outer surface of the driving shaft 204 near the bottom end, a slot 206 is provided on the outer surface of the mounting plate 201, the outer surface of the turntable 205 is rotatably connected to the inner wall of the slot 206, a camera 207 for real-time monitoring of the position of the hook in the winch is arranged near one side of the bottom of the turntable 205, a laser rangefinder 208 for monitoring the distance between the hook in the winch and the hook on the prefabricated bridge deck is arranged near the other side of the bottom of the turntable 205, and the top of the mounting block 301 is fixedly connected to the bottom of the turntable 205.

[0037] In this embodiment, in order to prevent the connection between the fixed hook 303 and the rotating hook 305 from being non-parallel to the opening of the hook on the bridge prefabricated plate, thereby making it inconvenient to connect the winch to the bridge prefabricated plate, as shown in the schematic diagram Fig.11As shown, when the fixed hook 303 and the rotating hook 305 move to the top of the hook on the bridge precast plate, the camera 207 is first started, wherein the camera 207 uses a computer vision algorithm to process the image taken by the camera 207, identifies the hook on the precast plate and the fixed hook 303 and the rotating hook 305 on the winch, and determines their positional relationship through image analysis, and then evaluates their relative position and direction by extracting and matching the feature points of the hook and the fixed hook 303 and the rotating hook 305, and determines whether they are parallel. When a deviation occurs, the laser rangefinder 208 is started to detect the specific deviation angle between the fixed hook 303 and the rotating hook 305 and the hook on the bridge precast plate, wherein the laser rangefinder 208 measures the straight-line distance between the fixed hook 303 and the rotating hook 305 and the hook, and by emitting lasers from two points and receiving return signals, the instrument can accurately record this distance, thereby obtaining the coordinates of the two, and the angle between them can be calculated using trigonometric functions, and then the drive motor 203 is started to drive the drive shaft 204 to rotate, thereby driving the turntable 205 to rotate, wherein, as shown in FIG. Figure 6 As shown, the slot 206 limits the turntable 205, so that the turntable 205 is more stable when driving the fixed hook 303 and the rotating hook 305 to rotate. The rotation of the turntable 205 drives the fixed hook 303 and the rotating hook 305 to rotate until the camera 207 detects that the connection between the fixed hook 303 and the rotating hook 305 and the hook on the bridge prefabricated plate are connected. Fig.11 The driving motor 203 can be turned off by adjusting the positions of the fixed hook 303 and the rotating hook 305 to facilitate the connection between the winch and the prefabricated bridge plate at a later stage.

[0038] like Figure 1-Figure 2 and Figure 7-Figure 10 As shown, an electromagnet 4 is provided on the inner wall of the rotating hook 305, telescopic rods 5 are fixed inside the fixed hook 303 near the edges on both sides, second springs 6 are provided on the outer surfaces of the two telescopic rods 5, and an iron block 7 for strengthening the firmness of the hook in the winch is fixedly installed between one ends of the two telescopic rods 5, one end of the two second springs 6 is fixedly connected to the inner wall of the fixed hook 303, and the other end of the two second springs 6 is fixedly connected to the outer surface of the iron block 7.

[0039] In this embodiment, in order to ensure the firmness of the connection between the winch and the prefabricated bridge plate, when the rotating hook 305 is in tight contact with the outer surface of the fixed hook 303, the electromagnet 4 is electrically connected to the external power supply to generate a magnetic field, thereby generating an attraction for the iron block 7, so that the iron block 7 moves in the direction of the electromagnet 4, thereby driving the two second springs 6 to extend, thereby driving the telescopic rod 5 to extend, until the outer surface of the electromagnet 4 is in tight contact with the outer surface of the iron block 7, thereby further improving the firmness of the connection between the fixed hook 303 and the rotating hook 305. When it is necessary to separate the fixed hook 303 and the rotating hook 305, the electromagnet 4 is powered off so that it no longer generates a magnetic field, thereby allowing the iron block 7 to be reset under the elastic action of the two second springs 6.

[0040] The use method and working principle of this device: During the construction of the bridge, the winch needs to be installed at a relative position to the external bridge erection machine first, and then the winch is moved to the top of the hook position on the prefabricated bridge plate, and then the stepper motor 102 is started to drive the driving rod 103 to rotate, thereby driving the winding roller 104 to rotate, so that the steel wire rope 105 wound on the surface of the winding roller 104 is unwound downward, thereby driving the connecting component 3 to move downward until the fixed hook 303 and the rotating hook 305 move to a position in contact with the hook in the prefabricated bridge plate, wherein, in order to prevent the connection between the fixed hook 303 and the rotating hook 305 from being non-parallel to the opening of the hook on the prefabricated bridge plate, as shown in the diagram Fig.11 In Figure 1 and Figure 2 As shown, when the fixed hook 303 and the rotating hook 305 move to the top of the hook on the prefabricated bridge plate, the camera 207 is first started to determine whether the connection between the fixed hook 303 and the rotating hook 305 and the hook on the prefabricated bridge plate are parallel. When a deviation occurs, the laser rangefinder 208 is started to detect the specific deviation angle between the fixed hook 303 and the rotating hook 305 and the hook on the prefabricated bridge plate, and then the drive motor 203 is started to drive the drive shaft 204 to rotate, thereby driving the turntable 205 to rotate. The rotation of the turntable 205 drives the fixed hook 303 and the rotating hook 305 to rotate until the camera 207 detects that the connection between the fixed hook 303 and the rotating hook 305 and the hook on the prefabricated bridge plate are parallel. Fig.11 The position shown in the third figure in FIG. 3 can be turned off to turn the drive motor 203, and then the forward and reverse motors 311 can be started to drive the rotating rod 312 to rotate, thereby driving the driving gear 313 to rotate, thereby driving the driven gear 315 to rotate, and then driving the gear row 309 to move toward the inside of the limiting groove 307, so that Figure 7The movable plate 308 shown is separated from the outer surface of the rotating hook 305, and the squeezing of the rotating hook 305 is stopped. The two first springs 306 will be shortened under the action of their own elastic force, driving the rotating hook 305 to rotate along the rotating shaft 304 toward the outer surface of the mounting block 301, so that a larger opening is generated between the fixed hook 303 and the rotating hook 305, and then the stepper motor 102 can be started again through the external control system to drive the winding roller 104 to rotate, thereby driving the fixed hook 303 and the rotating hook 305 to continue to move downward until the hook on the bridge prefabricated panel is between the inner wall of the fixed hook 303 and the rotating hook 305, and then it can be The forward and reverse motor 311 is started in the reverse direction, driving the rotating rod 312 to rotate in the reverse direction, thereby driving the driving gear 313 to rotate in the reverse direction, thereby driving the driven gear 315 to rotate in the reverse direction, and finally driving the tooth row 309 to move to the outside of the limiting groove 307, thereby driving the moving plate 308 to move outward. During the process of the moving plate 308 moving outward, the moving plate 308 gradually squeezes the rotating hook 305, thereby causing the rotating shaft 304 to drive the rotating hook 305 to rotate in the direction of the fixed hook 303. During the rotation of the rotating hook 305, the two first springs 306 are stretched and elongated until the outer surface of the rotating hook 305 is aligned with the fixed hook 303. The outer surface of the fixed hook 303 is in contact with the outer surface of the rotating hook 305, that is, the connection between the fixed hook 303 and the rotating hook 305 and the hook on the bridge prefabricated plate is completed. In order to ensure the firmness of the connection between the winch and the bridge prefabricated plate, when the rotating hook 305 is in tight contact with the outer surface of the fixed hook 303, the electromagnet 4 is electrically connected to the external power supply to generate a magnetic field, which generates an attraction for the iron block 7, so that the iron block 7 moves in the direction of the electromagnet 4, thereby driving the two second springs 6 to extend, thereby driving the telescopic rod 5 to extend until the outer surface of the electromagnet 4 is in tight contact with the outer surface of the iron block 7. When it is necessary to separate the fixed hook 303 and the rotating hook 305, the electromagnet 4 is disconnected. Electricity is applied so that it no longer generates a magnetic field, thereby allowing the iron block 7 to reset under the elastic action of the two second springs 6. When the connection between the winch and the precast bridge panel is completed, the stepper motor 102 can be started again to drive the drive rod 103 to rotate in the opposite direction, thereby driving the winding roller 104 to rotate in the opposite direction, thereby winding the wire rope 105, thereby allowing the fixed hook 303 and the rotating hook 305 to drive the precast bridge panel to move upward, thereby realizing the transfer of the precast bridge panel. Through the action of the connecting component 3, the winch can automatically realize a quick connection with the precast bridge panel before lifting the precast bridge panel, without the need for manual connection, thus saving manpower.

[0041] The wiring diagram of the stepper motor 102, the drive motor 203, the camera 207, the laser rangefinder 208, the forward and reverse motor 311 and the electromagnet 4 in the present invention is common knowledge in the art, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the stepper motor 102, the drive motor 203, the camera 207, the laser rangefinder 208, the forward and reverse motor 311 and the electromagnet 4 are no longer explained in detail.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting auxiliary device for a bridge erection machine, comprising a winding assembly (1) for lifting a prefabricated bridge deck and a fine-tuning assembly (2) for adjusting the position of a hook in a winch, characterized in that: A connecting assembly (3) for connecting the winch to the prefabricated bridge deck is arranged at the bottom of the fine adjustment assembly (2), and the connecting assembly (3) comprises a mounting block (301), a reinforcing plate (302) is fixed near the center of the bottom of the mounting block (301), a fixing hook (303) is fixedly installed on the outer surface of the reinforcing plate (302), a rotating shaft (304) is rotatably connected inside the reinforcing plate (302), a rotating hook (305) for hooking up the prefabricated bridge deck is fixedly installed on the outer surface of the rotating shaft (304), and a rotating hook (305) for hooking up the prefabricated bridge deck is arranged on the outer surface of the rotating hook (305). A first spring (306) is arranged near both side edges, a limiting groove (307) is provided on one side outer surface of the mounting block (301) near the edge, a movable plate (308) for squeezing and closing a hook in a hoist is slidably connected inside the limiting groove (307), a tooth row (309) is fixedly installed on the outer surface of the movable plate (308), an auxiliary frame (310) is fixedly installed on the other side outer surface of the mounting block (301), and a forward and reverse motor (311) for driving the opening and closing of the hook in the hoist is fixedly installed on the outer surface of the auxiliary frame (310) by screws.

2. The auxiliary lifting device for a bridge erecting machine according to claim 1, characterized in that: A rotating rod (312) is fixedly mounted on the output end of the forward and reverse motor (311), a driving gear (313) is fixedly sleeved on the outer surface of the rotating rod (312), a positioning rod (314) is fixed between the opposite inner walls of the mounting block (301), and a driven gear (315) is rotatably sleeved on the outer surface of the positioning rod (314).

3. The auxiliary lifting device for a bridge erecting machine according to claim 2, characterized in that: The outer surface of the fixed hook (303) is fixedly connected to the outer surface of the mounting block (301), one end of the two first springs (306) is fixedly connected to the outer surface of the rotating hook (305), the other end of the two first springs (306) is fixedly connected to the outer surface of the mounting block (301), and the outer surface of the movable plate (308) is movable and penetrates to the outside of the limiting groove (307).

4. The auxiliary lifting device for a bridge erecting machine according to claim 3, characterized in that: The outer surface of the tooth row (309) is meshedly connected with the outer surface of the driven gear (315), and the two ends of the rotating rod (312) are respectively movably penetrated to the opposite outer sides of the auxiliary frame (310), and the driving gear (313) is arranged inside the auxiliary frame (310), and the outer surface of the driving gear (313) is meshedly connected with the outer surface of the driven gear (315), and the outer surface of the driven gear (315) penetrates into the inside of the limiting groove (307), and the outer surface of the driven gear (315) is meshedly connected with the outer surface of the tooth row (309).

5. The auxiliary hoisting device for a bridge erecting machine according to claim 4, characterized in that: An electromagnet (4) is arranged on the inner wall of the rotating hook (305); telescopic rods (5) are fixed inside the fixed hook (303) near the edges on both sides; second springs (6) are arranged on the outer surfaces of the two telescopic rods (5); an iron block (7) for strengthening the firmness of the hook in the winch is fixedly installed between one ends of the two telescopic rods (5); one end of the two second springs (6) is fixedly connected to the inner wall of the fixed hook (303); and the other end of the two second springs (6) is fixedly connected to the outer surface of the iron block (7).

6. The auxiliary hoisting device for a bridge erecting machine according to claim 5, characterized in that: The fine-tuning assembly (2) comprises a mounting plate (201), a reinforcing rib (202) for improving the stability of the winch is fixedly mounted on the top of the mounting plate (201) near the outer edge, a driving motor (203) is fixedly mounted on the top of the mounting plate (201) near the center by screws, and the output end of the driving motor (203) is fixedly connected to a driving shaft (204).

7. The auxiliary lifting device for a bridge erecting machine according to claim 6, characterized in that: The bottom end of the driving shaft (204) is movable and penetrates to the outside of the mounting plate (201); a rotating disk (205) is fixedly sleeved on the outer surface of the driving shaft (204) near the bottom end; a slot (206) is provided on the outer surface of the mounting plate (201); and the outer surface of the rotating disk (205) is rotatably connected to the inner wall of the slot (206).

8. The auxiliary hoisting device for a bridge erecting machine according to claim 7, characterized in that: A camera (207) for real-time monitoring of the position of a hook in a winch is arranged near one side of the bottom of the turntable (205), and a laser rangefinder (208) for monitoring the distance between the hook in the winch and the hook on the prefabricated bridge deck is arranged near the other side of the bottom of the turntable (205). The top of the mounting block (301) is fixedly connected to the bottom of the turntable (205).

9. The auxiliary hoisting device for a bridge erecting machine according to claim 8, characterized in that: The winding assembly (1) comprises a main frame (101), a stepper motor (102) being fixedly mounted on the outer surface of the main frame (101) by means of screws, an output end of the stepper motor (102) being fixedly connected to a driving rod (103), and two ends of the driving rod (103) being movably connected to opposite exteriors of the main frame (101).

10. The auxiliary hoisting device for a bridge erecting machine according to claim 9, characterized in that: The outer surface of the driving rod (103) is fixedly sleeved with a winding roller (104), and the winding roller (104) is arranged inside the main frame (101). The outer surface of the winding roller (104) is wound with a steel wire rope (105) for lifting the prefabricated bridge deck, and the bottom end of the steel wire rope (105) is fixedly connected to the top of the reinforcing rib (202).

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