High-safety hanging beam trolley of single-beam bridge girder erection machine

Abstract

The utility model discloses a single-beam bridge girder erection machine hanging beam trolley with high safety in the technical field of bridge girder erection machines, which comprises a hanging beam, a frame body, a hanger and an electrical cabinet, the frame body is arranged on the outer side of the hanging beam, the hanger is arranged below the frame body, the electrical cabinet is fixedly connected to the right side of the rear side wall of the frame body, and the hanger is arranged on the right side of the rear side wall of the frame body. Winches are fixedly connected to the upper sides of the left side wall and the right side wall of the frame body, steel wire ropes are wound on the outer sides of the winches, transition pulleys are rotationally connected to the four corners of the top of the frame body, fixed pulley blocks are rotationally connected to the upper sides of the left side and the right side in the frame body, and roller trolleys are arranged at the four corners of the top of an inner cavity of the frame body; the single-beam bridge girder erection machine hanging beam trolley with high safety is reasonable in structural design, the friction resistance of a steel wire rope can be eliminated, the problem that a lifting appliance is inclined and not horizontal in the lifting process is solved, and the safety coefficient of a bridge girder erection machine is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bridge girder erection machine, concretely to a single-beam bridge girder erection machine beam lifting trolley with high safety. BACKGROUND

[0002] The winch and the beam lifting trolley of the existing large-tonnage hoisting equipment are mostly separated, the winch is generally arranged at both ends of the equipment, the steel wire rope is wound together with the beam lifting trolley and the lifting appliance to realize the lifting and hoisting of the hoisted object; this structure has many defects, when the beam lifting trolley reaches the other end, the winch steel wire rope needs to be very long, the winding capacity of the winch drum is large, thus the winch has a relatively large size, the frictional resistance caused by the long steel wire rope dragging the beam lifting trolley is large, thus the lifting appliance will be skewed and the like, in addition, the beam lifting trolley drive adopts chain transmission, and the safety accidents caused by the chain transmission breaking.

[0003] The Chinese patent with the publication number "CN203890888U" discloses "a beam lifting trolley of a single-arm box girder bridge girder erection machine", which comprises: a trolley main body, a beam lifting pole and a roller trolley; the trolley main body drives the beam lifting pole to move up and down through a guide rope, the roller trolley comprises a roller frame and rollers, the rollers are movably installed on the roller frame, the roller frame is fixedly installed on the trolley main body, and the rollers can move along the longitudinal direction of the arm. The beam lifting trolley of the single-arm box girder bridge girder erection machine provided by the utility model moves on the arm through the roller trolley, the strength of the roller trolley is greater than that of the gear, the roller trolley will not be damaged when lifting a large-tonnage beam piece, the beam lifting trolley can normally walk and work, and has the characteristics of simple structure, convenient transportation and assembly and excellent performance.

[0004] When the beam lifting trolley reaches the other end, the winch steel wire rope needs to be very long, the winding capacity of the winch drum is large, thus the winch has a relatively large size, the frictional resistance caused by the long steel wire rope dragging the beam lifting trolley is large, thus the lifting appliance will be skewed and the like, in addition, the beam lifting trolley drive adopts chain transmission, and the safety accidents caused by the chain transmission breaking, therefore, we propose a single-beam bridge girder erection machine beam lifting trolley with high safety. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a single-beam bridge girder erection machine beam lifting trolley with high safety to solve the problems in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: A single beam bridge erecting machine beam hoist trolley with high safety, including hoisting beam, frame body, lifting appliance and electrical cabinet, the frame body is located the outside of hoisting beam, the lifting appliance is located the below of frame body, the electrical cabinet fixed connection is established in the right side of rear side wall of frame body, the left and right side wall upper side fixed connection of frame body has winch, the outside of winch is wound with wire rope, the top four corners of frame body are rotatably connected with transition pulley, the inside left and right sides upper side rotatable connection of frame body has fixed pulley set, the inner chamber top four corners of frame body are equipped with gyrocar, the left and right sides of front and rear side wall of frame body are equipped with guide wheel, the lower side fixed connection of rear side wall of frame body has drive mechanism, the inside four corners rotatable connection of lifting appliance has auxiliary pulley, the inside four corners of lifting appliance and the fixed connection of outside of auxiliary pulley has suspender.

[0007] As the further description of the above technical scheme:

[0008] The hoisting beam is inserted into the inner chamber of the frame body, and the bottom left and right sides of the hoisting beam are fixedly connected with a rack.

[0009] As the further description of the above technical scheme:

[0010] The inside of the winch is provided with electromagnetic and hydraulic clamp disc two-stage brake.

[0011] As the further description of the above technical scheme:

[0012] The transition pulleys are two in a group and two groups are provided, the auxiliary pulleys are two in a group and two groups are provided, and the wire ropes pass through each group of transition pulleys, fixed pulley sets and auxiliary pulleys in sequence.

[0013] As the further description of the above technical scheme:

[0014] The bottom of the gyrocar is in contact with the top of the hoisting beam, and the outer wall of the guide wheel is in contact with the left and right side walls of the hoisting beam.

[0015] As the further description of the above technical scheme:

[0016] The rack is meshed with the driving teeth of the drive mechanism.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: The high-safety single-girder bridge erecting machine's lifting trolley is equipped with a dual-stage braking system of electromagnetic and hydraulic caliper discs in the winch, and the drive mechanism meshes with the racks on both sides of the bottom of the lifting beam to rotate. The roller trolley supports the frame to move, and the frame is positioned and guided by guide wheels. At the same time, the winch drives the wire rope to rotate. Through the coordinated use of fixed pulley blocks, transition pulleys and auxiliary pulleys, the frictional resistance generated by the dragging of the wire rope during longitudinal movement can be eliminated, realizing four-point lifting and three-point balance. In addition to eliminating the frictional resistance of the wire rope, it also solves the problem of the lifting device being tilted and not level during the lifting process, thus improving the safety factor of the bridge erecting machine. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a high-safety single-beam bridge erecting machine lifting trolley proposed in this utility model;

[0019] Figure 2 This is a rear view schematic diagram of a single-beam bridge erecting machine trolley with high safety proposed in this utility model;

[0020] Figure 3 This is a right-view structural schematic diagram of a single-beam bridge erecting machine trolley with high safety proposed in this utility model;

[0021] Figure 4 This is a front view structural diagram of a single-beam bridge erecting machine trolley with high safety proposed in this utility model.

[0022] In the diagram: 100, lifting beam; 110, rack; 200, frame; 210, winch; 211, wire rope; 220, transition pulley; 230, fixed pulley block; 240, roller trolley; 250, guide wheel; 260, drive mechanism; 300, lifting device; 310, auxiliary pulley; 320, lifting rod; 400, electrical cabinet. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] This utility model provides a high-safety single-girder bridge erecting machine lifting trolley, which not only eliminates the frictional resistance of the wire rope but also solves the problem of the lifting device tilting and not being horizontal during the lifting process, thus improving the safety factor of the bridge erecting machine. Please refer to [link / reference]. Figures 1-4 It includes a lifting beam 100, a frame 200, a lifting device 300, and an electrical cabinet 400;

[0027] Please see Figures 3-4 The lifting beam 100 is used to support the frame 200 for movement;

[0028] Please refer to it again. Figures 1-4A winch 210 is fixedly connected to the upper side of the left and right side walls of the frame 200. The winch 210 is used to wind up the wire rope 211. The wire rope 211 is wound around the outside of the winch 210 and is used to connect the lifting device 300. Transition pulleys 220 are rotatably connected to the four corners of the top of the frame 200. The transition pulleys 220 are used to change the direction of the wire rope 211. Fixed pulley groups 230 are rotatably connected to the upper side of the left and right sides inside the frame 200. The fixed pulley groups 230 are used to orient and limit the wire rope 211. Roller trolleys 240 are provided at the four corners of the top of the inner cavity of the frame 200. The roller trolleys 240 are used to support the lifting beam 100 and drive the frame 200 to move. Guide wheels 250 are provided on the left and right sides of the front and rear side walls of the frame 200. The guide wheels 250 are used to limit the lifting beam 100. The frame 200 moves in the same direction as the frame body 200. A drive mechanism 260 is fixedly connected to the lower side of the rear wall of the frame body 200. The drive mechanism 260 is used to move the lifting beam 100. The frame body 200 is located on the outside of the lifting beam 100. The winch 210 is equipped with a dual-stage braking system of electromagnetic and hydraulic clamp discs. The drive mechanism 260 meshes with the racks 110 on both sides of the bottom of the lifting beam 100 and rotates. The roller trolley 240 supports the frame body 200 to move. At the same time, the frame body 200 is positioned and guided by the guide wheel 250. Meanwhile, the winch 210 drives the wire rope 211 to rotate. Through the cooperation of the fixed pulley block 220, the transition pulley 230 and the auxiliary pulley 310, the frictional resistance generated by the dragging of the wire rope 211 during longitudinal movement can be eliminated, so as to achieve four-point lifting and three-point balance.

[0029] In summary, this method not only eliminates the frictional resistance of the wire rope 211 but also solves the problem of the lifting device 300 being tilted and not level during the lifting process, thus improving the safety factor of the bridge erecting machine.

[0030] Please refer to it again. Figures 1-4 The four corners of the inside of the lifting device 300 are rotatably connected to auxiliary pulleys 310, and the four corners of the inside of the lifting device 300 and the outside of the auxiliary pulleys 310 are fixedly connected to lifting rods 320. The lifting device 300 is located below the frame 200.

[0031] Please see Figure 3 The electrical cabinet 400 is fixedly connected to the right side of the rear wall of the frame 200. The electrical cabinet 400 is used to control the electrical equipment of the bridge erecting machine.

[0032] Please see Figure 4 The lifting beam 100 is inserted into the inner cavity of the frame 200. The bottom left and right sides of the lifting beam 100 are fixedly connected to the rack 110. The rack 110 is used to cooperate with the drive mechanism 260 to drive the lifting beam 100 to drive the frame 200 to move.

[0033] Please refer to it again. Figures 1-4 The winch 210 is equipped with a dual-stage braking system consisting of electromagnetic and hydraulic caliper discs on its inner side.

[0034] Please refer to it again. Figures 1-4 There are two sets of transition pulleys 220 and two sets of auxiliary pulleys 310. The wire rope 211 passes through each set of transition pulleys 220, fixed pulley group 230 and auxiliary pulley 310 in sequence.

[0035] Please refer to it again. Figures 3-4 The bottom of the roller trolley 240 contacts the top of the lifting beam 100, and the outer side wall of the guide wheel 250 contacts the left and right side walls of the lifting beam 100.

[0036] Please refer to it again. Figure 4 The rack 110 meshes with the drive teeth of the drive mechanism 260 and rotates.

[0037] In practical use, when using the bridge erecting machine, those skilled in the art transmit signals to the electrical cabinet 400 through external control equipment. The electrical cabinet 400 sends signals to the drive mechanism 260 to start. The rotating gear of the drive mechanism 260 meshes with the rack 110 and rotates, driving the frame 200 to move under the support of the lifting beam 100 via the roller trolley 240. The roller trolley 240 supports the frame 200 to move. At the same time, the frame 200 is positioned and guided by the guide wheel 250 to move the trolley above the material to be lifted. Simultaneously, the winch 210 drives the wire rope 211 to rotate. Through the cooperation of the fixed pulley block 220, the transition pulley 230 and the auxiliary pulley 310, the lifting device 300 is lowered above the material. After the material is fixed by the lifting rod 320, the winch 210 is started to wind it up. During the winding of the wire rope 211, the frictional resistance generated by the dragging of the wire rope 211 during longitudinal movement can be eliminated.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-safety single-girder bridge erecting machine girder lifting trolley, characterized in that: The system includes a lifting beam (100), a frame (200), a lifting device (300), and an electrical cabinet (400). The frame (200) is located outside the lifting beam (100), and the lifting device (300) is located below the frame (200). The electrical cabinet (400) is fixedly connected to the right side of the rear wall of the frame (200). Winches (210) are fixedly connected to the upper sides of the left and right side walls of the frame (200). Steel wire ropes (211) are wound around the outside of the winches (210). Transition pulleys (22) are rotatably connected to the four corners of the top of the frame (200). 0), the upper left and right sides of the frame (200) are rotatably connected to fixed pulley groups (230), the four corners of the top of the inner cavity of the frame (200) are provided with roller trolleys (240), the left and right sides of the front and rear side walls of the frame (200) are provided with guide wheels (250), the lower side of the rear side wall of the frame (200) is fixedly connected to a drive mechanism (260), the four corners of the inside of the lifting device (300) are rotatably connected to auxiliary pulleys (310), and the four corners of the inside of the lifting device (300) and the outside of the auxiliary pulleys (310) are fixedly connected to lifting rods (320).

2. The high-safety single-girder bridge erecting machine trolley according to claim 1, characterized in that: The lifting beam (100) is inserted into the inner cavity of the frame (200), and racks (110) are fixedly connected to the bottom left and right sides of the lifting beam (100).

3. The high-safety single-girder bridge erecting machine trolley according to claim 1, characterized in that: The winch (210) is equipped with a dual-stage braking system consisting of electromagnetic and hydraulic caliper discs on its inner side.

4. The high-safety single-girder bridge erecting machine trolley according to claim 1, characterized in that: The transition pulleys (220) are arranged in pairs, and two sets are provided. The auxiliary pulleys (310) are arranged in pairs, and two sets are provided. The wire rope (211) passes through each set of transition pulleys (220), fixed pulley group (230) and auxiliary pulleys (310) in sequence.

5. The high-safety single-girder bridge erecting machine trolley according to claim 1, characterized in that: The bottom of the roller trolley (240) is in contact with the top of the lifting beam (100), and the outer side wall of the guide wheel (250) is in contact with the left and right side walls of the lifting beam (100).

6. The single-girder bridge erecting machine girder lifting trolley with high safety according to claim 2, characterized in that: The rack (110) rotates in engagement with the drive teeth of the drive mechanism (260).

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