Double-beam bridge crane

Abstract

The utility model provides a double-beam bridge crane which comprises a guide rail, the upper end of the guide rail is in sliding connection with an advancing frame, the advancing frame is provided with a trolley sliding rail, the trolley sliding rail is in sliding connection with a hoisting trolley, and the left end and the right end of the advancing frame are both provided with limiting devices used for limiting the hoisting trolley. The limiting device comprises fixing plates symmetrically arranged at the left end and the right end of the advancing frame, telescopic push rods are arranged on the outer side walls of the fixing plates, the output ends of the telescopic push rods are connected with moving plates, and buffer assemblies are arranged on the opposite inner side faces of the two moving plates. According to the lifting trolley, the stroke of the lifting trolley is limited, the running boundary of the lifting trolley is controlled, an operator can more accurately position the lifting position, the movement kinetic energy of the lifting trolley can be effectively absorbed through the buffering assembly, the impact force during collision is relieved or eliminated, and the stability of equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes, and particularly relates to a double-girder bridge crane. Background Art

[0002] The double-girder bridge crane is a heavy mechanical equipment, which is widely used in warehouses, workshops and various large factories for material handling and heavy cargo hoisting. It can cover a relatively wide working area and is suitable for long-distance or large-area material handling requirements. In the prior art, a traveling trolley is usually slidably connected to the gantry rail, a top beam is drivably connected to the traveling trolley, and a hoisting trolley is slidably connected to the top beam to handle materials. However, in this method, a limiting device for limiting the stroke of the hoisting trolley is not provided at the end of the top beam. Without the limiting device, the hoisting device may exceed the predetermined working range, resulting in collision with the beam or other fixed structures, causing mechanical damage.

[0003] For example, the utility model with the publication number CN218251680U discloses a European-style double-girder bridge crane. In the technical solution of this patent, a traveling trolley is slidably connected to the gantry rail, a top beam is drivably connected to the traveling trolley, the top beams are symmetrically distributed on the traveling trolley, a trolley slide rail is arranged above the top beam, and a hoisting trolley is slidably connected in the trolley slide rail to handle and hoist materials. However, in this method, limiting devices for limiting the stroke of the hoisting trolley are not provided at both ends of the top beam. Without the limiting device, the hoisting trolley may exceed its safe operating range and collide with the end of the top beam, which may not only cause mechanical damage but also endanger the safety of operators and on-site workers. Summary of the Utility Model

[0004] In view of this, the utility model aims at the deficiencies of the prior art and provides a double-girder bridge crane, which can not only limit the stroke of the hoisting trolley through a limiting device to control the running boundary of the hoisting trolley, so that the operator can more accurately locate the position of the load, but also effectively absorb the kinetic energy of the moving hoisting trolley through a buffer component, slow down or eliminate the impact force during collision, and improve the stability of the equipment.

[0005] To solve the above technical problems, the technical solution adopted by the present utility model is as follows: A double-girder bridge crane, including a guide rail, a traveling vehicle frame is slidably connected to the upper end of the guide rail, a trolley slide rail is provided on the traveling vehicle frame, a hoisting trolley is slidably connected to the trolley slide rail, and limiting devices for limiting the hoisting trolley are provided at both the left and right ends of the traveling vehicle frame. The limiting devices include fixing plates symmetrically arranged at both the left and right ends of the traveling vehicle frame, telescopic push rods are arranged on the outer side walls of the fixing plates, moving plates are connected to the output ends of the telescopic push rods, and buffer components are arranged on the opposite inner side surfaces of the two moving plates.

[0006] As a further improvement of the present utility model, the buffer component includes mounting frames arranged on the moving plates, sliding grooves are symmetrically arranged inside the mounting frames, sliding plates are slidably arranged inside the sliding grooves, springs are connected between the sliding plates and the side walls of the adjacent sliding grooves respectively, rotating plates are rotatably connected to the opposite side surfaces of the two sliding plates, and baffle plates are rotatably connected to the ends of the rotating plates far away from the sliding plates.

[0007] As a further improvement of the present utility model, the baffle plates are slidably connected to the trolley slide rail, and the moving plates are slidably connected to the trolley slide rail.

[0008] As a further improvement of the present utility model, buffer pads are arranged on the opposite inner side surfaces of the baffle plates.

[0009] As a further improvement of the present utility model, a rotating roller is arranged inside the hoisting trolley, a steel cable is wound around the rotating roller, a lifting hook is connected to the bottom end of the steel cable, a motor is arranged at the front end of the hoisting trolley, and the output end of the motor is connected to the rotating roller through a coupling.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] First, by setting the limiting device and starting the telescopic push rod to push the moving plate along the trolley slide rail to a suitable position, the travel of the hoisting trolley can be limited. By controlling the operating boundary of the hoisting trolley, the operator can more accurately locate the position of the load, improving the operation efficiency and accuracy.

[0012] Second, by setting the buffer component, when the hoisting trolley contacts the baffle plate, the baffle plates move towards both ends respectively under the thrust, thereby squeezing the springs. The springs will generate elastic forces in the opposite direction of the movement of the baffle plates to prevent the baffle plates from moving, which can effectively absorb the kinetic energy of the movement of the hoisting trolley, slow down or eliminate the impact force during collision, and then make the hoisting trolley tend to be stable, avoiding the hoisting trolley directly contacting the limiting plate, thus causing a large impact on the limiting plate, prolonging the service life of the equipment, and improving the safety of the equipment.

[0013] Third, by setting the hoisting trolley and starting the motor, the motor drives the rotating roller to rotate, which can lift the object on the lifting hook and then transfer the object.

[0014] Fourthly, buffer pads are provided on the inner sides of the baffles opposite to each other, which can prevent the lifting trolley from directly contacting the baffles, reduce the wear of the lifting trolley and the baffles, and extend the service life of the equipment. Description of the Drawings

[0015] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the limiting device of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the traveling trolley of the present utility model;

[0019] Figure 4 is a schematic front view structural diagram of the present utility model.

[0020] In the figure: 101, guide rail; 102, traveling vehicle frame; 103, trolley slide rail; 104, lifting trolley; 201, fixing plate; 202, telescopic push rod; 203, moving plate; 204, mounting rack; 205, chute; 206, sliding plate; 207, spring; 208, rotating plate; 209, baffle; 210, buffer pad; 301, rotating roller; 302, steel cable; 303, lifting hook; 304, motor. Specific Embodiments

[0021] To better understand the present utility model, the content of the present utility model will be further clearly described below in conjunction with embodiments. However, the protected content of the present utility model is not limited to the following embodiments. In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details.

[0022] As Figure 1 、 2 、shown in FIG. 3, a double-girder bridge crane includes a guide rail 101, a traveling vehicle frame 102 is slidably connected to the upper end of the guide rail 101, a trolley slide rail 103 is provided on the traveling vehicle frame 102, a lifting trolley 104 is slidably connected to the trolley slide rail 103, and limiting devices for limiting the lifting trolley 104 are provided at both left and right ends of the traveling vehicle frame 102.

[0023] As Figure 1 、 2As shown in the figure, the limiting device includes fixing plates 201 symmetrically arranged at the left and right ends of the traveling frame 102. Telescopic push rods 202 are arranged on the outer side walls of the fixing plates 201. The output ends of the telescopic push rods 202 are connected with moving plates 203. The moving plates 203 are slidably connected to the trolley slide rails 103. Buffer components are arranged on the opposite inner side surfaces of the two moving plates 203. The buffer components include mounting frames 204 arranged on the moving plates 203. Chute grooves 205 are symmetrically arranged inside the mounting frames 204. Slide plates 206 are slidably arranged inside the chute grooves 205. Springs 207 are connected between the slide plates 206 and the side walls of the adjacent chute grooves 205 respectively. Rotating plates 208 are rotatably connected to one side surfaces of the two slide plates 206 facing each other. Baffle plates 209 are rotatably connected to the ends of the rotating plates 208 away from the slide plates 206. The baffle plates 209 are slidably connected to the trolley slide rails 103. When the hoisting trolley 104 contacts the baffle plates 209, the baffle plates 209 are respectively pushed to move towards both ends, thereby squeezing the springs 207. The springs 207 will generate elastic forces in the directions opposite to the moving directions of the baffle plates 209 to prevent the baffle plates 209 from moving, which can effectively absorb the kinetic energy of the hoisting trolley 104 during movement and slow down the impact force during collision.

[0024] As Figure 1 、 3 shown in the figure, a rotating roller 301 is arranged inside the hoisting trolley 104. A steel cable 302 is wound around the rotating roller 301. A lifting hook 303 is connected to the bottom end of the steel cable 302. A motor 304 is arranged at the front end of the hoisting trolley 104. The output end of the motor 304 is connected to the rotating roller 301 through a coupling.

[0025] During use, the traveling frame 102 moves on the guide rail 101, and the hoisting trolley 104 moves along the trolley slide rail 103. The motor 304 is started, and the motor 304 drives the rotating roller 301 to rotate, so as to lift the object on the lifting hook 303. During the movement of the hoisting trolley 104 along the slide rail, the telescopic push rod 202 is started, and the moving plate 203 is pushed along the trolley slide rail 103 to a suitable position, so as to limit the travel of the hoisting trolley 104. By controlling the operating boundary of the hoisting trolley 104, the operator can more accurately locate the position of the load, improve the operation efficiency and accuracy. When the hoisting trolley 104 contacts the baffle plate 209, the baffle plate 209 is respectively pushed to move towards both ends, thereby squeezing the spring 207. The spring 207 will generate an elastic force in the direction opposite to the moving direction of the baffle plate 209 to prevent the baffle plate 209 from moving, which can effectively absorb the kinetic energy of the hoisting trolley 104 during movement and slow down or eliminate the impact force during collision, thereby making the hoisting trolley 104 tend to be stable, avoiding the hoisting trolley 104 from directly contacting the limiting plate, thus causing a large impact on the limiting plate, prolonging the service life of the equipment and improving the safety of the equipment.

[0026] According to another embodiment of the present invention, as Figure 1 、2 As shown in Figure 4, buffer pads 210 are provided on the inner sides opposite to the baffle 209. The direct contact between the starting trolley and the baffle 209 will generate a relatively large sound, while the buffer pads 210 can significantly reduce this impact sound and reduce noise pollution, creating a more comfortable working environment for the operators.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention shall be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. A double-beam bridge crane, comprising a guide rail (101), characterized in that: The upper end of the guide rail (101) is slidably connected to a traveling frame (102), a trolley slide rail (103) is provided on the traveling frame (102), a lifting trolley (104) is slidably connected to the trolley slide rail (103), and a limiting device for limiting the lifting trolley (104) is provided at both left and right ends of the traveling frame (102).

2. The double-beam bridge crane according to claim 1, characterized in that: The limiting device comprises fixed plates (201) symmetrically arranged at the left and right ends of the traveling frame (102), telescopic push rods (202) are arranged on the outer side walls of the fixed plates (201), the output ends of the telescopic push rods (202) are connected to the moving plates (203), and buffer components are arranged on the opposite inner sides of the two moving plates (203).

3. The double-beam bridge crane according to claim 2, characterized in that: The buffer assembly comprises a mounting frame (204) arranged on a movable plate (203), wherein the mounting frame (204) is symmetrically provided with slide grooves (205), wherein slide plates (206) are slidably provided inside the slide grooves (205), wherein springs (207) are respectively connected between the slide plates (206) and the side walls of adjacent slide grooves (205), wherein the opposite side surfaces of the two slide plates (206) are rotatably connected with a rotating plate (208), and the end of the rotating plate (208) away from the slide plate (206) is rotatably connected with a baffle plate (209).

4. The double-beam bridge crane according to claim 3, characterized in that: The baffle (209) is slidably connected to the trolley slide rail (103).

5. The double-beam bridge crane according to claim 2, characterized in that: The movable plate (203) is slidably connected to the trolley slide rail (103).

6. The double-beam bridge crane according to claim 3, characterized in that: Buffer pads (210) are provided on opposite inner sides of the baffle (209).

7. The double-beam bridge crane according to claim 1, characterized in that: A rotating roller (301) is arranged inside the lifting trolley (104), a steel cable (302) is wound around the rotating roller (301), a lifting hook (303) is connected to the bottom end of the steel cable (302), a motor (304) is arranged at the front end of the lifting trolley (104), and an output end of the motor (304) is connected to the rotating roller (301) via a coupling.

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