A double-beam bridge crane hoisting mechanism

Abstract

The utility model discloses a double beam bridge -type crane hoisting mechanism relates to hoisting device technical field. Including the beam bridge body, the inside fixed connection of beam bridge body has the guide rail, the top of beam bridge body is provided with the promotion mobile car, the both sides of promotion mobile car are installed with the anti -derailing device respectively, the bottom end rotation connection of promotion mobile car has the mobile wheel for realizing the contact on the guide rail and realizes the movement, the anti -derailing device includes the limit track, and one side fixed mounting of limit track is in the inside one side of beam bridge body. The utility model discloses the setting of anti -derailing device, and the friction groove of limit block built -in restricts the mobile wheel position and slows down its rotating speed, effectively suppresses the bounce effect, and generates the bounce process because of the limit of limit track to mounting frame, guarantees that the mobile wheel and limit block will produce the relative movement situation, to this end realizes the bounce effect of suppression, guarantees the reliability of this anti -derailing device.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, specifically to a lifting mechanism for a double-girder bridge crane. Background Technology

[0002] Double girder cranes generally refer to double girder bridge cranes. Double girder cranes are generally composed of three main parts: mechanical, electrical and metal structure. The shape of a bridge crane resembles a single-span flat bridge that moves horizontally on two parallel overhead tracks supported at both ends.

[0003] For example, patent application number "CN222138496U", entitled "A Buffer Anti-Derailment Device for Cranes", includes a first connecting plate, a second connecting plate disposed on the front side of the first connecting plate, two support boxes fixedly installed on the front side of the first connecting plate, and the front side of the support boxes fixedly connected to the rear side of the second connecting plate; a movable box is disposed between the two support boxes, and a motor is fixedly installed on the inner wall of the bottom of the movable box. The above patent design is reasonable. By setting up a second sliding rail mechanism and a first buffer mechanism, it can limit the crane's moving wheels in the vertical direction, and can achieve the purpose of preventing the crane's rail wheels from bouncing and causing derailment. By setting up a second buffer mechanism, it can achieve the purpose of buffering the impact force of the crane's moving wheels in the front-to-back direction.

[0004] When the aforementioned device derails due to wheel bounce during use, the resulting impact force is transmitted to the entire anti-derailment device and even the main structure of the crane. Since the anti-derailment device is located in the main structure of the crane, it may cause the anti-derailment device and the moving wheel itself to shift simultaneously, reducing the reliability of its anti-derailment effect. Therefore, a double-girder bridge crane lifting mechanism is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a lifting mechanism for a double-girder bridge crane to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a double-girder bridge crane lifting mechanism, including a bridge body, a guide rail fixedly connected inside the bridge body, a lifting moving vehicle on the top of the bridge body, and anti-derailment devices installed on both sides of the lifting moving vehicle.

[0007] The bottom end of the lifting mobile vehicle is rotatably connected to a moving wheel for contacting and moving on the guide rail;

[0008] The anti-derailment device includes a limiting track, one side of which is fixedly installed inside the beam bridge body. A mounting frame is slidably connected to one side of the lifting mobile vehicle. A limiting wheel is rotatably connected inside the mounting frame. A first spring damper is installed between the mounting frame and the lifting mobile vehicle. A second spring damper is fixedly connected to the bottom end of the mounting frame. A limiting block is fixedly connected to the bottom end of the second spring damper.

[0009] Preferably, a sliding groove is provided on one side of the lifting mobile vehicle, and one side of the mounting frame is slidably connected to one side of the lifting mobile vehicle through the sliding groove, and one side of the limiting block is slidably connected to one side of the lifting mobile vehicle through the sliding groove.

[0010] Preferably, the anti-derailment device includes a planar limiting component, which includes a rotating frame. One end of the rotating frame is rotatably connected to one side of the lifting mobile vehicle, and pulleys are rotatably connected to both ends of the rotating frame.

[0011] Preferably, the lifting mobile vehicle is fixedly connected to two sides with No. 3 spring dampers, and the rotating frame is fixedly connected to a contact plate for contacting the No. 3 spring dampers.

[0012] Preferably, the inner wall of the pulley and the outer wall of the limiting track are slidably connected, and the inner wall of the limiting wheel and the outer wall of the limiting track are slidably connected.

[0013] Preferably, the lifting mobile vehicle is equipped with a moving device for lateral movement on the beam bridge body, and a lifting device for lifting heavy objects.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The lifting mechanism of this double-girder bridge crane, through the setting of the anti-derailment device, when vertical displacement occurs between the moving wheel and the guide rail due to bouncing, the No. 1 spring damper and the No. 2 spring damper work together to restrict the position of the moving wheel and slow down its rotation speed through the friction groove built into the limiting block, effectively suppressing the bouncing effect. Moreover, during the bouncing process, because the mounting frame is restricted by the limiting rail, it is ensured that the moving wheel and the limiting block will move relative to each other, thereby suppressing the bouncing effect and ensuring the reliability of the anti-derailment device.

[0016] Meanwhile, the close contact between the pulley and the limiting rail, combined with the linkage mechanism between the rotating frame and the No. 3 spring damper, maintains angular stability during lateral movement. The extension and retraction of the No. 3 spring promptly corrects any deviation, ensuring that the angular deviation between the direction of the moving wheel and the direction of the guide rail is within a small range, thereby effectively reducing the risk of derailment caused by bouncing. Attached Figure Description

[0017] Figure 1 This is an isometric drawing of the present invention;

[0018] Figure 2 This is an isometric drawing of the anti-derailment device of this utility model;

[0019] Figure 3 This is the front view of the rotating frame of this utility model.

[0020] In the diagram: 1. Bridge body; 2. Lifting and moving vehicle; 3. Anti-derailment device; 301. Restriction rail; 302. Mounting frame; 303. Restriction wheel; 304. No. 1 spring damper; 305. No. 2 spring damper; 306. Restriction block; 307. Rotating frame; 308. Pulley; 309. No. 3 spring damper; 310. Contact plate; 4. Guide rail; 5. Moving wheel. Detailed Implementation

[0021] 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.

[0022] like Figure 1 - Figure 3 As shown, this utility model provides a technical solution: a double-girder bridge crane lifting mechanism, including a beam bridge body 1, a guide rail 4 fixedly connected inside the beam bridge body 1, a lifting moving vehicle 2 set on the top of the beam bridge body 1, and anti-derailment devices 3 installed on both sides of the lifting moving vehicle 2.

[0023] The bottom end of the lifting mobile vehicle 2 is rotatably connected to a moving wheel 5 for contacting and moving on the guide rail 4;

[0024] The anti-derailment device 3 includes a limiting track 301. One side of the limiting track 301 is fixedly installed inside the beam bridge body 1. One side of the lifting moving vehicle 2 is slidably connected to a mounting frame 302. A limiting wheel 303 is rotatably connected inside the mounting frame 302. A first spring damper 304 is installed between the mounting frame 302 and the lifting moving vehicle 2. A second spring damper 305 is fixedly connected to the bottom end of the mounting frame 302. A limiting block 306 is fixedly connected to the bottom end of the second spring damper 305.

[0025] A sliding groove is provided on one side of the lifting mobile vehicle 2. One side of the mounting bracket 302 is slidably connected to one side of the lifting mobile vehicle 2 through the sliding groove, and one side of the limiting block 306 is slidably connected to one side of the lifting mobile vehicle 2 through the sliding groove.

[0026] The anti-derailment device 3 includes a planar limiting component, which includes a rotating frame 307. One end of the rotating frame 307 is rotatably connected to one side of the lifting mobile vehicle 2, and pulleys 308 are rotatably connected to both ends of the rotating frame 307.

[0027] The lifting mobile vehicle 2 is fixedly connected to the two sides with No. 3 spring dampers 309, and the rotating frame 307 is fixedly connected to the inside with a contact plate 310 for contacting the No. 3 spring dampers 309.

[0028] The inner wall of pulley 308 is slidably connected to the outer wall of limiting track 301, and the inner wall of limiting wheel 303 is slidably connected to the outer wall of limiting track 301.

[0029] The lifting mobile vehicle 2 is equipped with a moving device for lateral movement on the beam bridge body 1, and a lifting device for lifting heavy objects.

[0030] Due to track errors, equipment deformation, wheel wear, and improper operation, the lifting mobile car 2 is at risk of derailment. The lifting mobile car 2 is a core safety component that ensures the safe lateral movement of the crane. The lifting mobile car 2 is equipped with a moving device that can move laterally on the beam bridge body 1 and a lifting device for lifting heavy objects. The moving device and the lifting device are existing technologies, and their specific structures will not be described here. The power output end of the moving device is fixed to the moving wheel 5. The moving device realizes the rotation of the moving wheel 5, thereby controlling the movement of the lifting mobile car 2.

[0031] During movement, if bouncing occurs between the moving wheel 5 and the guide rail 4, the moving wheel 5 moves upward, putting pressure on the second spring damper 305, causing it to have an upward trend. Simultaneously, the mounting frame 302 is confined within a set range by the setting between the limiting wheel 303 and the limiting rail 301. Meanwhile, the first spring damper 304 applies force to the mounting frame 302 as it moves upward. The first and second spring dampers 304 restrict the limiting block 306, causing it to contact the moving wheel 5. The limiting block 306 contains a friction wheel, which restricts the position of the moving wheel 5 and its rotation speed, thus preventing derailment caused by the crane's moving wheel 5 bouncing.

[0032] Simultaneously, during movement, pulley 308 also comes into contact with the limiting rail 301. Through the arrangement of pulley 308 and rotating frame 307, the lifting mobile car 2 can maintain angular stability during lateral movement, thereby ensuring that the angular deviation between the moving direction of the moving wheel 5 and the direction of the guide rail 4 is within a small range. When the lifting mobile car 2 deviates in angle, the contact between the third spring damper 309 and the contact plate 310 causes the extension end of the third spring damper 309 to change, thereby applying a force to the lifting mobile car 2 and reducing the angular deviation.

[0033] When the bouncing causes vertical displacement between the moving wheel 5 and the guide rail 4, the first spring damper 304 and the second spring damper 305 work together to restrict the position of the moving wheel 5 and slow down its rotation speed through the friction groove built into the limiting block 306, effectively suppressing the bouncing effect. During the bouncing process, the mounting frame 302 is restricted by the limiting rail 301, ensuring that the moving wheel 5 and the limiting block 306 will move relative to each other, thereby suppressing the bouncing effect and ensuring the reliability of the anti-derailment device 3. The close contact between the pulley 308 and the limiting rail 301, combined with the linkage mechanism between the rotating frame 307 and the third spring damper 309, maintains angular stability during lateral movement. The extension and retraction adjustment of the third spring promptly corrects the offset, ensuring that the angular deviation between the direction of the moving wheel 5 and the direction of the guide rail 4 is within a small range, thereby effectively reducing the risk of derailment caused by bouncing.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended embodiments and their equivalents.

Claims

1. A lifting mechanism for a double-girder bridge crane, comprising a bridge body (1), wherein a guide rail (4) is fixedly connected inside the bridge body (1), characterized in that: The top of the beam bridge body (1) is provided with a lifting mobile vehicle (2), and anti-derailment devices (3) are installed on both sides of the lifting mobile vehicle (2); The bottom end of the lifting mobile vehicle (2) is rotatably connected to a moving wheel (5) for contacting and moving on the guide rail (4); The anti-derailment device (3) includes a limiting track (301), one side of which is fixedly installed inside the beam bridge body (1). A mounting frame (302) is slidably connected to one side of the lifting moving vehicle (2). A limiting wheel (303) is rotatably connected inside the mounting frame (302). A first spring damper (304) is installed between the mounting frame (302) and the lifting moving vehicle (2). A second spring damper (305) is fixedly connected to the bottom end of the mounting frame (302). A limiting block (306) is fixedly connected to the bottom end of the second spring damper (305).

2. The lifting mechanism for a double-girder bridge crane according to claim 1, characterized in that: A sliding groove is provided on one side of the lifting mobile vehicle (2), and one side of the mounting bracket (302) is slidably connected to one side of the lifting mobile vehicle (2) through the sliding groove. One side of the limiting block (306) is slidably connected to one side of the lifting mobile vehicle (2) through the sliding groove.

3. The lifting mechanism of a double-girder bridge crane according to claim 1, characterized in that: The anti-derailment device (3) includes a planar limiting component, which includes a rotating frame (307). One end of the rotating frame (307) is rotatably connected to one side of the lifting moving vehicle (2), and pulleys (308) are rotatably connected to both ends of the rotating frame (307).

4. The lifting mechanism for a double-girder bridge crane according to claim 3, characterized in that: The lifting mobile vehicle (2) is fixedly connected to two sides with No. 3 spring dampers (309), and the rotating frame (307) is fixedly connected to a contact plate (310) for contacting the No. 3 spring dampers (309).

5. The lifting mechanism of a double-girder bridge crane according to claim 1, characterized in that: The inner wall of the pulley (308) is slidably connected to the outer wall of the limiting track (301), and the inner wall of the limiting wheel (303) is slidably connected to the outer wall of the limiting track (301).

6. The lifting mechanism of a double-girder bridge crane according to claim 1, characterized in that: The lifting mobile vehicle (2) is equipped with a moving device for lateral movement on the beam bridge body (1), and a lifting device for lifting heavy objects.

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