Beam lifter fixing device

Abstract

The utility model discloses a beam lifter fixing device which comprises a first limiting plate, second limiting plates are symmetrically and fixedly connected to the outer surfaces of the front end and the rear end of the first limiting plate, limiting rods are rotationally connected to the middles of the second limiting plates, and the limiting rods penetrate through the front ends and the rear ends of the second limiting plates and are rotationally connected with the second limiting plates. The outer surfaces of the limiting rods are fixedly connected with movable rolling wheels, and the outer surfaces of the movable rolling wheels are fixedly connected with contact rolling wheels. The fixed plate, the contact roller, the wear-resistant base plate and other components are arranged, the fixed plate drives the wear-resistant base plate to fixedly brake the contact roller, the wheel braking precision is improved, meanwhile, the labor intensity of braking workers is greatly reduced, and the braking precision and accuracy are improved; along with the opposite movement of the displacement blocks, the bag body is compressed, and air in the bag body is discharged under the action of pressure to blow and clean dust and impurities on the surface of the contact roller.

Description

Technical Field

[0001] This utility model relates to the field of beam lifting machine technology, and in particular to a beam lifting machine fixing device. Background Technology

[0002] A gantry crane is a type of gantry crane specifically designed for bridge construction. It mainly consists of a prefabricated main beam, outriggers, and a trolley, with components connected by pins and high-strength bolts, facilitating easy assembly, disassembly, and transportation. Compared to ordinary gantry cranes, it is quicker and easier to install, and more economical. It is suitable for road and bridge construction companies that frequently relocate.

[0003] To prevent the lifting gantry crane from being affected by wind and other natural factors when operating outdoors, and to ensure accuracy and safety during lifting operations, wheel fixing devices are usually installed to prevent wheel slippage. Existing fixing devices typically use manual screws for clamping, but manually turning the screws can easily lead to insufficient clamping force and low work efficiency.

[0004] Authorized inscription number CN217377054U discloses a wheel fixing device for a beam lifting machine, comprising a wheel and a shaft, with the wheel fixed on the shaft. The device also includes: a wheel frame, with both ends of the shaft rotatably mounted on the wheel frame; several electromagnets fixed to the wheel frame; and a fixing plate rotatably mounted on the wheel frame and located on one or both sides of the wheel, with one end of the fixing plate opposite to the electromagnet. This fixing device achieves braking through electromagnets, the fixing plate, and clamping blocks, avoiding manual braking. It features short braking time, high efficiency, accurate positioning, and both braking and positioning functions, resulting in high system reliability.

[0005] The existing beam lifting machine wheel fixing device uses magnetorheological fluid for braking during use. Magnetorheological fluid has a short liquid-solid conversion time, short braking time, and accurate positioning. However, in actual use, due to the beam lifting machine's long-term outdoor operation and the wheels' prolonged movement, a large amount of dust and impurities will adhere to the wheel surface. The wheels cannot be effectively cleaned during movement, and the dust and impurities will affect the stability of the wheel rotation, thereby affecting the lifting accuracy and greatly accelerating wheel wear, posing a significant safety hazard.

[0006] Therefore, a beam lifting machine fixing device is proposed. Summary of the Invention

[0007] The purpose of this utility model is to provide a beam lifting machine fixing device to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a beam lifting machine fixing device, comprising a first limiting plate, a second limiting plate symmetrically fixedly connected to the outer surfaces of the front and rear ends of the first limiting plate, a limiting rod rotatably connected to the middle of the second limiting plate, the limiting rod penetrating to the front and rear ends of the second limiting plate and rotatably connected to the second limiting plate, a movable roller fixedly connected to the outer surface of the limiting rod, a contact roller fixedly connected to the outer surface of the movable roller, a guide rail rotatably connected to the lower end of the outer surface of the contact roller, the guide rail having an I-shaped structure, and mounting holes provided on the upper outer surface of the first limiting plate, the number of mounting holes being four sets and arranged in a ring.

[0009] Preferably, the contact roller has a ring structure and is made of wear-resistant rubber material.

[0010] Preferably, a third limiting plate is fixedly connected to the lower outer surface of the first limiting plate. There are two sets of the third limiting plates, which are symmetrically distributed. A motor is fixedly connected to the right end of the outer surface of the third limiting plate, and a screw is fixedly connected to the left end of the motor output shaft. The screw passes through both ends of the third limiting plate and is rotatably connected to the third limiting plate.

[0011] Preferably, the outer surface of the screw is helically connected to a displacement block, and the number of displacement blocks is two sets and they are symmetrically distributed. The upper outer surface of the displacement block is slidably connected to the lower end of the first limiting plate.

[0012] Preferably, a fixing plate is fixedly connected to the lower outer surface of the displacement block, and a wear-resistant pad is fixedly connected to the side of the fixing plate near the movable roller. There are two sets of both the fixing plate and the wear-resistant pad, and both the fixing plate and the wear-resistant pad have an arc-shaped structure.

[0013] Preferably, a bladder is fixedly connected between the two sets of displacement blocks, and a connecting pipe is fixedly connected to the upper end of the bladder. The connecting pipe extends through to the upper side of the first limiting plate, and a first check valve is fixedly connected to the inner surface of the connecting pipe.

[0014] Preferably, a second connecting pipe is fixedly connected to the outer surface of the lower end of the bladder, and a second check valve is fixedly connected to the inner surface of the second connecting pipe. The second connecting pipe is located directly above the movable roller.

[0015] Preferably, the motor is electrically connected to an external power source.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. By setting components such as a bladder, displacement blocks, and exhaust pipe in this device, when the wheels of the beam lifting machine are braked, the displacement blocks move in opposite directions to compress the bladder. The air inside the bladder is discharged under pressure to blow away dust and impurities on the surface of the contact rollers, thereby improving the cleaning efficiency of the contact rollers and preventing impurities from affecting the stability of the beam lifting machine during operation, which greatly improves the lifting accuracy of the beam lifting machine.

[0018] 2. By setting components such as a fixing plate, contact rollers, and wear-resistant pads in this device, the fixing plate drives the wear-resistant pads to fix and brake the contact rollers, which improves the braking accuracy of the wheels and greatly reduces the labor intensity of the braking workers, thus improving the precision and accuracy of braking. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 View of the overall structure of this utility model Figure 1 ;

[0021] Figure 2 View of the overall structure of this utility model Figure 2 ;

[0022] Figure 3 This is a left view of the overall structure of this utility model;

[0023] Figure 4 This is a cross-sectional view of the overall structure of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Guide rail; 2. First limiting plate; 3. Second limiting plate; 4. Motor; 5. Fixing plate; 6. Limiting rod; 7. Mounting hole; 8. Connecting pipe one; 9. Screw; 10. Third limiting plate; 11. Movable roller; 12. Contact roller; 13. Wear-resistant pad; 14. Displacement block; 15. First check valve; 16. Bladder body; 17. Connecting pipe two; 18. Second check valve. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1 to 4 This utility model provides a technical solution:

[0028] A beam lifting machine fixing device includes a first limiting plate 2. A second limiting plate 3 is symmetrically fixedly connected to the outer surfaces of the front and rear ends of the first limiting plate 2. A limiting rod 6 is rotatably connected to the middle of the second limiting plate 3. The limiting rod 6 passes through the front and rear ends of the second limiting plate 3 and is rotatably connected to the second limiting plate 3. A movable roller 11 is fixedly connected to the outer surface of the limiting rod 6. A contact roller 12 is fixedly connected to the outer surface of the movable roller 11. A guide rail 1 is rotatably connected to the lower end of the outer surface of the contact roller 12. The guide rail 1 has an I-shaped structure. Four sets of mounting holes 7 are provided on the upper outer surface of the first limiting plate 2 and are arranged in a ring.

[0029] The contact roller 12 has a ring structure and is made of wear-resistant rubber material.

[0030] By adopting the above technical solution, firstly, the movable roller 11 rotates and fits against the outer surface of the upper end of the track through the contact roller 12. The wheel supports and fixes the second limiting plate 3 and the first limiting plate 2 through the limiting rod 6. The main body of the beam lifting machine is fixedly connected to the second limiting plate 3 through the mounting hole 7, thereby driving the beam lifting machine to move. The ring-shaped mounting holes 7 help to make the beam lifting machine connection more stable. The I-shaped guide rail 1 has good support capacity, which helps to improve the stability of the beam lifting machine operation.

[0031] Specifically, such as Figure 2 and Figure 4 As shown, a third limiting plate 10 is fixedly connected to the lower outer surface of the first limiting plate 2. There are two sets of the third limiting plates 10, which are symmetrically distributed. A motor 4 is fixedly connected to the right end of the outer surface of the third limiting plate 10. A screw 9 is fixedly connected to the left end of the output shaft of the motor 4. The screw 9 passes through the left and right ends of the third limiting plate 10 and is rotatably connected to the third limiting plate 10.

[0032] The screw 9 has a helical drive connection to a displacement block 14 on its outer surface. There are two sets of displacement blocks 14, which are symmetrically distributed. The upper outer surface of the displacement block 14 is slidably connected to the lower end of the first limiting plate 2.

[0033] A fixing plate 5 is fixedly connected to the lower outer surface of the displacement block 14. A wear-resistant pad 13 is fixedly connected to the side of the fixing plate 5 near the movable roller 11. There are two sets of both the fixing plate 5 and the wear-resistant pad 13. Both the fixing plate 5 and the wear-resistant pad 13 are arc-shaped structures.

[0034] The motor 4 is electrically connected to an external power source.

[0035] By adopting the above technical solution, when the lifting beam machine brakes, the motor 4 is first powered on, and the output shaft of the motor 4 drives the screw 9 to rotate synchronously. The third limit plate 10 supports the screw 9, and the displacement block 14 rotates synchronously with the screw 9 through a helical transmission connection. Then, the screw 9 drives the fixed plate 5 to move synchronously. The fixed plate 5 locks the contact roller 12 and the movable roller 11 through the wear-resistant pad 13, so that the movable roller 11 stops rotating under the action of friction. The contact roller 12 helps to increase the friction of the movable roller 11 when braking, thereby improving the accuracy of braking.

[0036] Specifically, such as Figure 4 As shown, a bladder 16 is fixedly connected between the two sets of displacement blocks 14. A connecting pipe 8 is fixedly connected to the upper end of the bladder 16. The connecting pipe 8 extends through to the upper side of the first limiting plate 2. A first check valve 15 is fixedly connected to the inner surface of the connecting pipe 8.

[0037] A connecting pipe 17 is fixedly connected to the outer surface of the lower end of the bladder 16, and a second check valve 18 is fixedly connected to the inner surface of the connecting pipe 17. The connecting pipe 17 is located directly above the movable roller 11.

[0038] By adopting the above technical solution, when braking, the displacement blocks 14 move towards each other to compress the bladder 16. Under pressure, the gas inside the bladder 16 is discharged through the connecting pipe 17 and the second check valve 18. The discharged air blows away the dust and impurities on the surface of the contact roller 12, thereby improving the cleaning efficiency of the contact roller 12. When the two sets of displacement blocks 14 move away from each other, they simultaneously stretch the bladder 16. Air enters the bladder 16 through the connecting pipe 8 and the one-way valve, causing the bladder 16 to re-expand.

[0039] Working principle: First, the movable roller 11 rotates and engages with the outer surface of the upper end of the track via the contact roller 12. The wheel is supported and fixed by the second limiting plate 3 and the first limiting plate 2 via the limiting rod 6. The main body of the beam lifting machine is fixedly connected to the second limiting plate 3 through the mounting holes 7, thereby driving the beam lifting machine to move. The annularly distributed mounting holes 7 help to make the beam lifting machine connection more stable. The I-shaped guide rail 1 has good support capacity, which helps to improve the stability of the beam lifting machine operation. When the beam lifting machine brakes, the motor 4 is first powered on. The output shaft of the motor 4 drives the screw 9 to rotate synchronously. The third limiting plate 10 supports the screw 9. The displacement block 14 rotates synchronously with the screw 9 through the helical transmission connection with the screw 9. Then the screw 9 drives the fixed plate 5. Synchronous movement: The fixed plate 5 locks the contact roller 12 and the movable roller 11 with the wear-resistant pad 13, causing the movable roller 11 to stop rotating under the action of friction. The contact roller 12 helps to increase the friction of the movable roller 11 when braking, thereby improving the accuracy of braking. When braking, the displacement blocks 14 move towards each other to compress the bladder 16. The gas in the bladder 16 is discharged under pressure through the connecting pipe 17 and the second check valve 18. The discharged air blows away the dust and impurities on the surface of the contact roller 12, thereby improving the cleaning efficiency of the contact roller 12. When the two sets of displacement blocks 14 move away from each other, they synchronously stretch the bladder 16. Air enters the bladder 16 through the connecting pipe 8 and the one-way valve, causing the bladder 16 to re-expand.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A timber lifting machine fixing device comprising a first limiting plate (2), characterized in that: The first limiting plate (2) has a second limiting plate (3) symmetrically fixedly connected to the outer surfaces of its front and rear ends. The second limiting plate (3) has a limiting rod (6) rotatably connected to its middle part. The limiting rod (6) passes through the front and rear ends of the second limiting plate (3) and is rotatably connected to the second limiting plate (3). The outer surface of the limiting rod (6) is fixedly connected to a movable roller (11). The outer surface of the movable roller (11) is fixedly connected to a contact roller (12). The lower outer surface of the first limiting plate (2) is fixedly connected to a third limiting plate (10). There are two sets of the third limiting plates (10) and they are symmetrically distributed. The right end of the outer surface of the third limiting plate (10) is fixedly connected to a motor (4). The left end of the output shaft of the motor (4) is fixedly connected to a screw (9).

2. A beam lifter fixture as claimed in claim 1, wherein: The lower end of the outer surface of the contact roller (12) is rotatably connected to the guide rail (1). The guide rail (1) has an I-shaped structure. The upper outer surface of the first limiting plate (2) is provided with mounting holes (7). There are four sets of mounting holes (7) and they are arranged in a ring. The contact roller (12) has a ring structure and is made of wear-resistant rubber material.

3. A beam lifter fixture as claimed in claim 2, wherein: The screw (9) passes through the left and right ends of the third limiting plate (10) and is rotatably connected to the third limiting plate (10).

4. A beam lifter fixture as claimed in claim 3, wherein: The screw (9) has a displacement block (14) connected to its outer surface by a spiral drive. The lower outer surface of the displacement block (14) is fixedly connected to a fixing plate (5). There are two sets of displacement blocks (14) that are symmetrically distributed. The upper outer surface of the displacement block (14) is slidably connected to the lower end of the first limiting plate (2). A bladder (16) is fixedly connected between the two sets of displacement blocks (14). A connecting pipe (8) is fixedly connected to the upper end of the bladder (16).

5. A beam lifter fixture as claimed in claim 4, wherein: The fixed plate (5) is fixedly connected to the wear-resistant pad (13) on the side near the movable roller (11). There are two sets of both the fixed plate (5) and the wear-resistant pad (13). Both the fixed plate (5) and the wear-resistant pad (13) are arc-shaped structures.

6. A beam lifter fixture as claimed in claim 5, wherein: The connecting pipe (8) extends to the upper side of the first limiting plate (2), and a first check valve (15) is fixedly connected to the inner surface of the connecting pipe (8).

7. A beam lifter fixture as claimed in claim 6, wherein: The lower outer surface of the capsule (16) is fixedly connected to a second connecting pipe (17), and the inner surface of the second connecting pipe (17) is fixedly connected to a second check valve (18). The second connecting pipe (17) is located directly above the movable roller (11).

8. A beam lifter fixture as claimed in claim 7, wherein: The motor (4) is electrically connected to an external power source.

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