Overhead manned device in super-long span suspension bridge catwalk portal

Abstract

The utility model provides an overhead manned device in a super-long span suspension bridge catwalk portal, which comprises a plurality of portal catwalk brackets and a catwalk main body arranged on a bottom beam of the portal catwalk brackets, cable supporting wheel sets are arranged on upright posts of the portal catwalk brackets, traction ropes are tensioned among the cable supporting wheel sets, and the portal catwalk main body is arranged on a bottom beam of the portal catwalk brackets. The traction rope is in transmission connection with traction driving mechanisms at the two ends of the traction rope, and a man-carrying device is hung on the traction rope. The man-carrying device higher than the catwalk main body is arranged on the stand column of the portal catwalk bracket to transport workers, meanwhile, the man-carrying device with the lifting function is arranged and can be arranged at the position away from the catwalk main body by a certain height, the normal construction effect of the catwalk is not affected, and the working efficiency is improved. The ascending and descending of workers are completed through the ascending and descending of the manned device, the walking efficiency of the workers is improved, the working intensity of the workers is reduced, and the working conditions of the workers are improved.

Description

Technical Field

[0001] The utility model relates to the field of bridge catwalks, in particular to an overhead manned device inside the gantry of a catwalk for an extra-long span suspension bridge. Background Art

[0002] As the most important temporary structure in the construction of the upper structure of a suspension bridge, the catwalk mainly provides a working platform for the construction of the upper structure, ensuring that construction workers can safely and effectively complete operations such as main cable traction, hanging locks, cable compacting, wire winding, and girder erection on it. At present, the catwalk surface layer is generally composed of wire mesh and wooden squares, with a high height, a large slope, and difficult walking, belonging to high-risk operations. Moreover, under the action of pulsating wind, the vibration effect of the catwalk is obvious, resulting in difficulties for operators to walk, time-consuming and laborious, easy to produce fatigue, poor comfort, and low operation efficiency. The span of suspension bridges is getting larger and larger. At present, the main span of suspension bridges in China has exceeded the 2000-meter level, and the corresponding catwalk length also exceeds 4000 meters. If the conventional catwalk design is still adopted, it will take 2 - 3 hours for construction workers to walk through the catwalk once, and 4 - 6 hours if they turn back, with extremely high operation intensity and it is difficult to guarantee the construction efficiency and quality of personnel. Therefore, an overhead manned device inside the gantry of a catwalk for an extra-long span suspension bridge is proposed to solve the above problems. Content of the Utility Model

[0003] The main purpose of the utility model is to provide an overhead manned device inside the gantry of a catwalk for an extra-long span suspension bridge to solve the problems of difficult walking and time-consuming and laborious for construction workers on the catwalk.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is: an overhead manned device inside the gantry of a catwalk for an extra-long span suspension bridge, which includes a plurality of gantry catwalk brackets and a catwalk main body arranged on the bottom beam of the gantry catwalk bracket. Towing wheel sets are arranged on the columns of the gantry catwalk bracket, a towing rope is tensioned between the towing wheel sets, the towing rope is in transmission connection with the towing drive mechanisms at both ends thereof, and a manned device is suspended on the towing rope;

[0005] The manned device includes a connecting frame, a hoisting frame is arranged at the center of the top of the connecting frame, a towing cable gripper connected to the towing rope is arranged on the hoisting frame, and a manned seat is suspended on the connecting frame through a lifting mechanism arranged thereon in a liftable manner.

[0006] In a preferred solution, the lifting mechanism includes two winding mechanisms and a driving device that is simultaneously in transmission connection with the two winding mechanisms. The two winding mechanisms are symmetrically arranged on both sides of the hoisting frame.

[0007] In a preferred solution, the winding mechanism includes two symmetrically arranged vertical plates, a winding drum rotatably arranged between the two vertical plates through a rotating shaft, and a worm gear is connected to one end of the rotating shaft passing through the vertical plate.

[0008] In a preferred embodiment, the driving device includes two support bearings arranged on the connecting frame, a transmission rod passing through the two support bearings, two worm gears arranged on the transmission rod, and a driving mechanism arranged on the connecting frame and in transmission connection with the transmission rod;

[0009] The two worm gears have opposite helix directions and are respectively in transmission connection with the worm wheels of the two winding mechanisms.

[0010] In a preferred embodiment, grooves are provided on both sides of the connecting frame, pulleys are arranged in the grooves, and the pull ropes wound around the outside of the winding mechanism pass through the pulleys to form a wrap angle and then are connected to the manned seat.

[0011] In a preferred embodiment, the manned seat includes a seat body, a backrest frame is provided at the top of the backrest of the seat body, a vertical upward hanging frame is provided at the center of gravity of the seat body, a connecting part is provided between the backrest frame and the hanging frame, and a hanging ear is provided at the top of the hanging frame.

[0012] In a preferred embodiment, a plug-in part is provided at the top of the hanging frame, a pin hole is provided on the plug-in part, a covering part corresponding to the plug-in part is provided at the bottom of the connecting frame, when the manned seat rises to the topmost position, the plug-in part is inserted into the covering part, and an automatic plug-in and unplugging pin that can penetrate the pin hole is provided on the covering part.

[0013] The present utility model provides an aerial manned device inside the catwalk gantry of an extra-long span suspension bridge. By arranging a manned device higher than the catwalk main body on the column of the gantry catwalk bracket, the transportation of workers can be completed. At the same time, because a manned device with lifting ability is arranged, it can be set at a certain height from the catwalk main body, without affecting the normal construction of the catwalk. Through the lifting of the manned device, the personnel can go up and down, achieving the improvement of the walking efficiency of the operators, the reduction of the working intensity of the operators, and the improvement of the working conditions of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0015] Figure 1 is the side view of the overall structure of the present utility model;

[0016] Figure 2 is the structural diagram of the manned device of the present utility model;

[0017] Figure 3 is the top view structural diagram of the connecting frame of the present utility model;

[0018] Figure 4 is the structural diagram of the driving device of the present utility model;

[0019] Figure 5 is the structural diagram of the winding mechanism of the present utility model;

[0020] Figure 6 This is the structural diagram of the manned seat of the present utility model;

[0021] Figure 7 This is another perspective view of the structure of the manned seat of the present utility model;

[0022] In the figure: gantry catwalk bracket 1; catwalk main body 2; cable supporting wheel set 3; manned device 4; connecting frame 41; groove 411; pulley 412; shrouding part 414; automatic plug-in pin 415; hoisting frame 42; traction cable gripper 43; lifting mechanism 44; winding mechanism 441; vertical plate 4410; winding drum 4411; driving device 442; supporting bearing 4420; transmission rod 4421; worm 4423; driving mechanism 4424; manned seat 45; seat body 450; backrest frame 451; hanging bracket 452; connecting part 453; lifting lug 454; plug-in part 456; pin hole 457; traction rope 5. Specific embodiments

[0023] As Figure 1-7 shown, an overhead manned device inside the gantry of a super-long span suspension bridge catwalk includes a plurality of gantry catwalk brackets 1 and a catwalk main body 2 provided on the bottom beam of the gantry catwalk bracket 1. A cable supporting wheel set 3 is provided on the upright column of the gantry catwalk bracket 1. A traction rope 5 is tensioned between the cable supporting wheel sets 3. The traction rope 5 is in transmission connection with the traction driving mechanisms at both ends thereof. A manned device 4 is hoisted on the traction rope 5.

[0024] It should be noted that in this embodiment, the traction system composed of the cable supporting wheel set 3, the traction rope 5 and the traction driving mechanism is a common technical means for cableway transportation, so it will not be described in detail here. Through this traction system, the manned device 4 can be driven to move above the catwalk main body 2, thereby achieving the effect of transporting workers.

[0025] The manned device 4 includes a connecting frame 41. A hoisting frame 42 is provided at the center of the top of the connecting frame 41. A traction cable gripper 43 connected to the traction rope 5 is provided on the hoisting frame 42. The connecting frame 41 hoists a manned seat 45 through a lifting mechanism 44 provided thereon in a liftable manner.

[0026] By providing the lifting mechanism 44, the effect of lifting and lowering the manned seat 45 can be achieved. Furthermore, the traction system and the manned seat 45 can be arranged at a certain height from the catwalk main body 2, so as not to affect the normal work on the catwalk main body 2. When getting on and off personnel, only the manned seat 45 needs to be lifted and lowered.

[0027] In a preferred embodiment, the lifting mechanism 44 includes two winding mechanisms 441 and a driving device 442 that is drivingly connected to the two winding mechanisms 441 at the same time. The two winding mechanisms 441 are symmetrically arranged on both sides of the lifting frame 42. Pulling ropes with ends connected to the manned seat 45 are wound around both of the two winding mechanisms 441. By providing the two winding mechanisms 441, the effect of smoothly lifting and lowering the manned seat 45 can be achieved. In addition, by using the method of using the same driving device 442 to drive the two winding mechanisms 441, the synchronization of the winding and unwinding of the two winding mechanisms 441 can be ensured.

[0028] Among them, the winding mechanism 441 includes two symmetrically arranged vertical plates 4410 and a winding drum 4411 that is rotatably arranged between the two vertical plates 4410 through a rotating shaft. One end of the rotating shaft passes through the vertical plate 4410 and is connected to a worm gear 4412. Among them, bearings are provided on both of the two vertical plates 4410, and the rotating shaft of the winding drum 4411 is arranged through the bearings, so as to realize the winding and unwinding of the pulling rope through the rotation of the winding drum 4411.

[0029] The driving device 442 includes two support bearings 4420 fixedly arranged on the connecting frame 41, a transmission rod 4421 arranged through the two support bearings 4420, two worm gears 4423 fixedly arranged on the transmission rod 4421, and a driving mechanism 4424 arranged on the connecting frame 41 and drivingly connected to the transmission rod 4421. The power of the driving mechanism 4424 can drive the transmission rod 4421 to rotate in the two support bearings 4420, and then drive the two worm gears 4423 to rotate.

[0030] It should be noted that in this embodiment, the driving mechanism 4424 is formed by drivingly connecting a driving motor and a speed reducer, and the end of the transmission rod 4421 is drivingly connected to the output end of the speed reducer.

[0031] In addition, the helix directions of the two worm gears 4423 are opposite, and they are respectively drivingly connected to the worm gears 4412 of the two winding mechanisms 441, so that the two winding mechanisms 441 can rotate in opposite directions under the drive of the two worm gears 4423, achieving the effect of synchronous winding and unwinding.

[0032] In a preferred embodiment, grooves 411 are provided on both sides of the connecting frame 41, and pulleys 412 are arranged in the grooves 411. The pulling ropes wound outside the winding mechanism 441 are connected to the manned seat 45 after passing through the pulleys 412 to form a wrap angle. The pulleys 412 are concave pulleys, which can limit the pulling ropes therein. By providing the pulleys 412, the friction force can be effectively reduced.

[0033] In a preferred embodiment, the manned seat 45 includes a seat body 450. The seat body 450 is arranged at an elevation angle. A backrest frame 451 is fixedly provided at the top end of the backrest of the seat body 450. A vertically upward hanging frame 452 is fixedly provided at the center of gravity of the seat body 450. A connecting portion 453 is fixedly provided between the backrest frame 451 and the hanging frame 452. The overall stability of the manned seat 45 can be effectively improved through the connecting portion 453. A lug 454 is provided at the top of the hanging frame 452. The end of the pulling rope is connected to the lug 454.

[0034] In a preferred embodiment, a plug-in portion 456 is provided at the top of the hanging frame 452. A pin hole 457 is provided on the plug-in portion 456. A shroud portion 414 corresponding to the plug-in portion 456 is provided at the bottom of the connecting frame 41. When the manned seat 45 rises to the topmost position, the plug-in portion 456 is inserted into the shroud portion 414. An automatic plug and unplug pin 415 that can penetrate the pin hole 457 is provided on the shroud portion 414. The manned seat 45 can be locked during movement through the automatic plug and unplug pin 415, and thus the winding mechanism 441 is in a pressure relief state.

[0035] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An overhead man-carrying device in a catwalk gantry of an ultra-long span suspension bridge, comprising a plurality of gantry catwalk brackets (1) and a catwalk body (2) arranged on the bottom beam of the gantry catwalk brackets (1), wherein: A cable wheel assembly (3) is arranged on the upright column of the door-type catwalk bracket (1), a traction rope (5) is tensioned between the cable wheel assembly (3), the traction rope (5) is drivingly connected to the traction drive mechanism at both ends thereof, and a man-carrying device (4) is suspended on the traction rope (5); The man-carrying device (4) comprises a connecting frame (41), a hanging frame (42) is arranged at the center of the top of the connecting frame (41), a traction rope gripper (43) connected to the traction rope (5) is arranged on the hanging frame (42), and a man-carrying seat (45) is hoisted and lifted on the connecting frame (41) via a lifting mechanism (44) arranged thereon.

2. According to claim 1, the overhead man-carrying device in the catwalk portal of an ultra-long span suspension bridge is characterized in that: The lifting mechanism (44) comprises two reeling mechanisms (441) and a driving device (442) that is simultaneously transmission-connected to the two reeling mechanisms (441); the two reeling mechanisms (441) are symmetrically arranged on both sides of the hanging frame (42).

3. The overhead man-carrying device in the catwalk portal of an ultra-long span suspension bridge according to claim 2 is characterized in that: The winding mechanism (441) comprises two symmetrically arranged vertical plates (4410), and a winding drum (4411) rotatably arranged between the two vertical plates (4410) via a rotating shaft, wherein one end of the rotating shaft passes through the vertical plates (4410) and is connected to a worm gear (4412).

4. The overhead passenger-carrying device in the catwalk portal of an ultra-long span suspension bridge according to claim 3 is characterized in that: The driving device (442) comprises two support bearings (4420) arranged on the connecting frame (41), a transmission rod (4421) penetrating the two support bearings (4420), two worm gears (4423) arranged on the transmission rod (4421), and a driving mechanism (4424) arranged on the connecting frame (41) and drivingly connected to the transmission rod (4421); The two worms (4423) have opposite rotation directions and are respectively connected to the worm wheels (4412) of the two winding mechanisms (441) in a transmission manner.

5. The overhead passenger-carrying device in the catwalk portal of an ultra-long span suspension bridge according to claim 4 is characterized in that: Grooves (411) are provided on both sides of the connecting frame (41), and pulleys (412) are provided in the grooves (411). The pull rope wound around the outside of the winding mechanism (441) passes through the pulleys (412) to form a wrap angle and is then connected to the passenger seat (45).

6. The overhead passenger-carrying device in the catwalk portal of an ultra-long span suspension bridge according to any one of claims 1 to 5, characterized in that: The passenger seat (45) comprises a seat body (450), a backrest frame (451) is arranged at the top of the backrest of the seat body (450), a vertically upward hanging frame (452) is arranged at the center of gravity of the seat body (450), a connecting portion (453) is arranged between the backrest frame (451) and the hanging frame (452), and a hanging ear (454) is arranged at the top of the hanging frame (452).

7. The overhead passenger-carrying device in the catwalk portal of an ultra-long span suspension bridge according to claim 6 is characterized in that: The top of the hanger (452) is provided with a plug-in portion (456), and the plug-in portion (456) is provided with a pin hole (457). The bottom of the connecting frame (41) is provided with a cover portion (414) corresponding to the plug-in portion (456). When the passenger seat (45) is raised to the top, the plug-in portion (456) is inserted into the cover portion (414), and the cover portion (414) is provided with an automatic plug-in pin (415) that can penetrate the pin hole (457).

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