Anti-falling device for travelling wheel of variable-amplitude trolley of tower crane

Abstract

The invention provides a tower crane variable-amplitude trolley walking wheel anti-disengaging device, and belongs to the technical field of variable-amplitude trolley anti-disengaging, the tower crane variable-amplitude trolley walking wheel anti-disengaging device comprises a variable-amplitude trolley frame, a variable-amplitude trolley walking wheel, a wheel bearing, a pin shaft and a protective end cover, the wheel bearing is arranged in the variable-amplitude trolley walking wheel, and the protective end cover is arranged on one side of the variable-amplitude trolley walking wheel; one end of the pin shaft penetrates through the variable-amplitude trolley walking wheel and is fixed to the variable-amplitude trolley frame, and one end of the protective end cover is arranged between the wheel bearing and a shaft cap boss of the pin shaft. One end of the protection end cover is arranged between the wheel bearing and the shaft cap boss of the pin shaft, the contact area of the protection end cover and the wheel bearing face is large, and when the wheel bearing is damaged and deformed, the protection end cover can effectively abut against the wheel bearing and prevent the wheel bearing from being extruded out; the variable-amplitude trolley walking wheel and the pin shaft are still in an integral connection state, the purpose of preventing the variable-amplitude trolley walking wheel from falling off is achieved, the structure is compact and simple, disassembly and assembly are easy and convenient, stress is reasonable and efficient, and safety and reliability are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of anti-slipping of a luffing trolley, and in particular to an anti-slipping device for a traveling wheel of a tower crane luffing trolley. Background Art

[0002] As the main engineering equipment in construction, the frequency of use and work intensity of tower cranes have increased relatively. The luffing trolley on the crane arm is also a very frequent construction action to carry loads back and forth on the boom. Safety accidents such as damage to the traveling wheel bearings of the tower crane's luffing trolley and derailment of the luffing trolley wheels, which lead to the falling of the trolley frame and the hanging load, also often occur.

[0003] During the installation and disassembly process of the existing detachable anti-slip device for the walking wheel of the variable-length trolley, the walking wheel is connected to the pin shaft, the pin shaft cap is in close contact with the bearing, there is no end cover on the wheel surface, and the wheel axle is separated and protected by a U-shaped baffle. Each wheel needs to be equipped with 2 pairs of bolts to fasten the U-shaped baffle. Its structure is relatively simple, the contact surface between the pin shaft cap and the bearing is small, the force is relatively dispersed, and the assembly parts are scattered, easy to lose during transportation and hoisting, and the installation and disassembly is complicated and easy to be insufficient or missed, and the installation and disassembly workers have low working level. Under the combined influence of various reasons, the installation and disassembly of this connection position is usually relatively cumbersome. It does not conform to the safe, efficient and energy-saving working mode in modern construction operations.

[0004] Therefore, it is extremely important for construction equipment tower cranes to provide a safe, reliable, easy to manufacture, and mandatory protection anti-falling device. Summary of the invention

[0005] The purpose of the present invention is to provide a tower crane luffing trolley anti-slip device to solve the technical problem that the existing split and detachable luffing trolley anti-slip device is complicated to disassemble and assemble. The present invention realizes the anti-slip protection of forced protection by setting an integrally formed protective end cover to press against the contact surface of the wheel bearing. The structure is compact, the disassembly and assembly are simple and convenient, the disassembly and assembly difficulty is reduced, and the disassembly and assembly cost is effectively reduced, the work efficiency is improved, and the safety is high.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A tower crane luffing trolley traveling wheel anti-slip device comprises a luffing trolley frame, a luffing trolley traveling wheel, a wheel bearing, a pin shaft and a protective end cover, the wheel bearing is arranged inside the luffing trolley traveling wheel, the protective end cover is arranged on one side of the luffing trolley traveling wheel, one end of the pin shaft passes through the luffing trolley traveling wheel and is fixed on the luffing trolley frame, and one end of the protective end cover is arranged between the wheel bearing and the shaft cap boss of the pin shaft.

[0008] Furthermore, the number of the wheel bearings is set to two, and elastic retaining rings for holes are respectively arranged between the two wheel bearings and on the outer sides of the wheel bearings.

[0009] Furthermore, the outer side of one end of the protective end cover is arranged in contact with the wheel bearing, and the inner side of one end of the protective end cover is clamped with the shaft cap boss of the pin shaft.

[0010] Furthermore, a straight-through pressure-injection oil cup is arranged inside the pin shaft.

[0011] Furthermore, the protective end cover includes a large circular cover surface, a through hole is arranged in the middle of the large circular cover surface, a protruding cylinder is arranged on one side of the large circular cover surface, a clamping ring is arranged at one end of the protruding cylinder, and the large circular cover surface, the protruding cylinder and the clamping ring are integrally formed.

[0012] Furthermore, the outer side of the snap ring is arranged in contact with the wheel bearing, the inner side of the snap ring is clamped with the shaft cap boss of the pin shaft, and the inner diameter of the snap ring is arranged in contact with the outer side of the shaft rod of the pin shaft.

[0013] Furthermore, the outer side wall of the protruding cylinder and the other side of the large circular cover surface form an inwardly concave arc, and the outer periphery of the clamping ring is arranged as an outwardly convex arc.

[0014] Furthermore, the inner diameter of the through hole of the large circular cover surface is the same as the inner diameter of the protruding cylinder, and the outer diameter of the clamping ring is the same as the inner diameter of the protruding cylinder.

[0015] Furthermore, the outer diameter of the shaft of the pin is the same as the inner diameter of the retaining ring, and the outer diameter of the shaft cap boss of the pin is the same as the inner diameter of the protruding cylinder.

[0016] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0017] 1. The anti-slip device of the present invention ensures that the performance and structural safety of the luffing trolley are not affected. One end of the protective end cover is arranged between the wheel bearing and the shaft cap boss of the pin shaft. The contact area between the protective end cover and the wheel bearing surface is large. When the wheel bearing is damaged and deformed, the protective end cover can effectively tighten the wheel bearing and prevent the wheel bearing from being squeezed out, ensuring that the traveling wheel of the luffing trolley and the pin shaft can still be in an integrally connected state, thereby achieving the purpose of preventing the traveling wheel of the luffing trolley from slipping off. The structure is compact and simple, the disassembly and assembly are simple and convenient, the force is reasonable and efficient, and it is safe and reliable.

[0018] 2. The protective end cover of the present invention is integrally formed. Without interfering with the installation and tightening of the connecting frame of the traveling wheel of the luffing trolley, the retaining ring of the protective end cover is fully pressed against the wheel bearing surface. The protective end cover can press against the contact surface of the wheel bearing to achieve forced protection against detachment, thereby achieving the purpose of preventing the traveling wheel of the luffing trolley from detaching. The large circular cover surface can also fully block the traveling wheel of the luffing trolley, greatly improving the service life and safety of the traveling wheel of the luffing trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the anti-slip device of the present invention;

[0020] Figure 2 is a top view of the anti-slip device of the present invention;

[0021] Figure 3 It is a cross-sectional schematic diagram of the anti-slip device of the present invention;

[0022] Figure 4 is a top view of the protective end cover of the present invention;

[0023] Figure 5 It is a cross-sectional schematic diagram of the protective end cover of the present invention.

[0024] In the attached drawings, 1-the luffing trolley frame, 2-the traveling wheel of the luffing trolley, 3-the wheel bearing, 4-the pin shaft, 5-the protective end cover, 51-the large circular cover surface, 52-the through hole, 53-the protruding cylinder, 54-the retaining ring, 55-the inwardly concave arc, 56-the outwardly convex arc, 6-the elastic retaining ring for the hole, and 7-the straight-through pressure injection oil cup. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0026] like Figure 1-3 As shown, a tower crane luffing trolley traveling wheel anti-slip device comprises a luffing trolley frame 1, a luffing trolley traveling wheel 2, a wheel bearing 3, a pin shaft 4 and a protective end cover 5, the wheel bearing 3 is arranged inside the luffing trolley traveling wheel 2, the protective end cover 5 is arranged on one side of the luffing trolley traveling wheel 2, one end of the pin shaft 4 passes through the luffing trolley traveling wheel 2 and is fixed on the luffing trolley frame 1, and one end of the protective end cover 5 is arranged between the wheel bearing 3 and the shaft cap boss of the pin shaft 4. The anti-slip device of the present invention ensures that the performance and structural safety of the luffing trolley are not affected. One end of the protective end cover 5 is arranged between the wheel bearing 3 and the shaft cap boss of the pin shaft 4. The contact area between the protective end cover 5 and the wheel bearing surface is relatively large. When the wheel bearing 3 is damaged and deformed, the protective end cover 5 can effectively tighten the wheel bearing 3 and prevent the wheel bearing 3 from being squeezed out, thereby ensuring that the traveling wheel 2 of the luffing trolley and the pin shaft 4 can still be in an integrally connected state, thereby achieving the purpose of preventing the traveling wheel of the luffing trolley from slipping off. The structure is compact and simple, the disassembly and assembly are simple and convenient, the force is reasonable and efficient, and it is safe and reliable.

[0027] like Figure 2-3As shown, the number of wheel bearings 3 is set to two, and elastic retaining rings 6 for holes are respectively arranged between the two wheel bearings 3 and on the outside of the wheel bearings 3. The elastic retaining rings 6 for holes are used to fix the axial movement of the wheel bearings 3 to prevent the wheel bearings 3 from running around. The outer side of one end of the protective end cover 5 is arranged in contact with the wheel bearing 3, and the inner side of one end of the protective end cover 5 is clamped with the shaft cap boss of the pin shaft 4. The protective end cover 5 is arranged in contact with the wheel bearing 3 to ensure that the protective end cover 5 can press against the contact surface of the wheel bearing to achieve the anti-detachment protection of the forced protection, with a simple structure and high safety; the disassembly and assembly are quick and convenient, which greatly reduces the difficulty of disassembly and assembly, thereby effectively reducing the disassembly and assembly operation cost and improving work efficiency. A straight-through pressure injection oil cup 7 is arranged inside the pin shaft 4, and the straight-through pressure injection oil cup 7 supplies oil to the wheel bearing 3 to increase the lubrication of the contact surface between the wheel bearing 3 and the pin shaft 4. One end of the pin shaft 4 is clamped by a card plate, and the card plate is fastened to the variable-length trolley frame 1 by bolts.

[0028] like Figure 3-5 As shown, the protective end cover 5 includes a large circular cover surface 51, a through hole 52 is provided in the middle of the large circular cover surface 51, a protruding cylinder 53 is provided on one side of the large circular cover surface 51, and a snap ring 54 is provided at one end of the protruding cylinder 53. The large circular cover surface 51, the protruding cylinder 53 and the snap ring 54 are integrally formed. The outer side of the snap ring 54 is arranged in contact with the wheel bearing 3 to ensure that the snap ring 54 can press against the wheel bearing contact surface, the inner side of the snap ring 54 is clamped with the shaft cap boss of the pin shaft 4, and the inner diameter of the snap ring 54 is arranged in contact with the shaft rod of the pin shaft 4. The outer side wall of the protruding cylinder 53 and the other side of the large circular cover surface 51 form an inwardly concave arc 55, and the outer periphery of the snap ring 54 is arranged as an outwardly convex arc 56. The inner diameter of the through hole 52 of the large circular cover surface 51 is the same as the inner diameter of the protruding cylinder 53, and the outer diameter of the snap ring 54 is the same as the inner diameter of the protruding cylinder 53. The outer diameter of the shaft of the pin 4 is the same as the inner diameter of the snap ring 54, and the outer diameter of the shaft cap boss of the pin 4 is the same as the inner diameter of the protruding cylinder 53. The snap ring 54 of the protective end cover 5 of the present invention is installed between the wheel bearing 3 and the shaft cap boss of the pin 4, so that the contact area between the protective end cover 5 and the wheel bearing surface is large. When the wheel bearing is damaged and deformed, the protective end cover 5 can effectively press to prevent the wheel bearing from being squeezed out, ensuring that the traveling wheel 2 of the variable-length trolley and the pin 4 can still be in an integrally connected state, achieving the purpose of preventing the wheel from falling off; the protective end cover 5 of the present invention is integrally formed, and the function of preventing the wheel from falling off is realized without interfering with the installation and tightening of the traveling wheel connecting frame of the variable-length trolley. The protective end cover 5 is fully pressed against the wheel bearing surface through the snap ring 54, and the large circular cover surface 51 of the protective end cover 5 can also fully block the traveling wheel 2 of the variable-length trolley, greatly improving the service life and safety of the traveling wheel 2 of the variable-length trolley. The anti-slip device of the present invention protects the wheels and axles by wrapping the wheel end covers, thereby greatly improving the working efficiency and achieving the purpose of forced anti-slip of the traveling wheels of the tower crane luffing trolley in a more effective, faster and more stable way.

[0029] The split and detachable anti-slip device of the luffing trolley needs to be installed and disassembled many times, which is a cumbersome process and parts are prone to loss during the transportation of the equipment. The anti-slip device of the present invention is designed with an integral assembly structure in mind. As long as the protective end cover is installed before the pin is installed, the retaining ring of the protective end cover is in contact with the wheel bearing, which can tighten the contact surface of the wheel bearing to achieve forced protection against slipping. The pin is passed through the protective end cover and the traveling wheel of the luffing trolley in turn, and the boss of the pin cap is clamped on the retaining ring of the protective end cover, so as to achieve the purpose of forced protection against falling off of the wheel. Under the premise of ensuring the functionality and safety of the traveling wheel of the luffing trolley, the present invention minimizes the installation steps and adjustment time required during installation, improves installation efficiency, reduces installation difficulty, and improves safety and reliability.

[0030] The traveling wheel of the luffing trolley of the present invention is assembled with a pin shaft, an anti-dropout end cover, a wheel bearing, etc. to form an integral traveling wheel assembly, and its structural design is more compact and simple, and the wheel anti-dropout measures are more reasonable and efficient; the anti-dropout device of the traveling wheel of the luffing trolley of the present invention can be quickly installed, and only needs to install the end cover before installing the pin shaft, and then connect the pin shaft to meet the anti-dropout requirements, thereby simplifying the installation steps, and the installation can be completed by simple assembly during the process; the present invention fully considers the safety and stability of the anti-dropout device structure and the rigidity of the entire trolley traveling wheel assembly structure, and the anti-dropout end cover of the traveling wheel of the luffing trolley realizes forced protection against dropping, while ensuring a beautiful visual effect.

[0031] Installation Process

[0032] Install the two wheel bearings 3 inside the traveling wheel 2 of the luffing trolley, and then install the elastic retaining ring 6 between the two wheel bearings 3 and in the installation hole on one side of the wheel bearing 3, and then install the protective end cover 5 on one side of the traveling wheel 2 of the luffing trolley so that the outer side of the retaining ring 54 of the protective end cover 5 contacts the wheel bearing 3, and then pass one end of the pin shaft 4 with the straight-through pressure injection oil cup 7 through the protective end cover 5, the traveling wheel 2 of the luffing trolley and the frame 1 of the luffing trolley, and one end of the pin shaft 4 is clamped with the card plate, and the card plate is bolted. It is fastened to the frame 1 of the luffing trolley, and at the same time, the shaft cap boss of the pin shaft 4 is clamped on the inner side of the snap ring 54 of the protective end cover 5. The snap ring 54 of the protective end cover 5 is installed between the wheel bearing 3 and the shaft cap boss of the pin shaft 4. The contact area between the protective end cover 5 and the wheel bearing surface is large. When the wheel bearing 3 is damaged or deformed, the protective end cover 5 can effectively tighten to prevent the wheel bearing from being squeezed out, thereby ensuring that the traveling wheel 2 of the luffing trolley and the pin shaft 4 can still be in an integrally connected state, thereby achieving the purpose of preventing the wheel from falling off.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A tower crane luffing trolley travel wheel anti-slip device, characterized in that: The invention comprises a luffing trolley frame (1), a luffing trolley running wheel (2), a wheel bearing (3), a pin shaft (4) and a protective end cover (5), wherein the wheel bearing (3) is arranged inside the luffing trolley running wheel (2), the protective end cover (5) is arranged on one side of the luffing trolley running wheel (2), one end of the pin shaft (4) passes through the luffing trolley running wheel (2) and is fixed on the luffing trolley frame (1), and one end of the protective end cover (5) is arranged between the wheel bearing (3) and the shaft cap boss of the pin shaft (4).

2. The tower crane luffing trolley anti-slip device according to claim 1 is characterized in that: The number of the wheel bearings (3) is set to two, and elastic retaining rings (6) for holes are respectively arranged between the two wheel bearings (3) and on the outsides of the wheel bearings (3).

3. The tower crane luffing trolley anti-slip device according to claim 1 is characterized in that: The outer side of one end of the protective end cover (5) is arranged in contact with the wheel bearing (3), and the inner side of one end of the protective end cover (5) is clamped with the shaft cap boss of the pin shaft (4).

4. The tower crane luffing trolley anti-slip device according to claim 1 is characterized in that: A straight-through pressure-injection oil cup (7) is arranged inside the pin shaft (4).

5. The tower crane luffing trolley travel wheel anti-slip device according to claim 1, characterized in that: The protective end cover (5) comprises a large circular cover surface (51), a through hole (52) is provided in the middle of the large circular cover surface (51), a protruding cylinder (53) is provided on one side of the large circular cover surface (51), a clamping ring (54) is provided at one end of the protruding cylinder (53), and the large circular cover surface (51), the protruding cylinder (53) and the clamping ring (54) are integrally formed.

6. The tower crane luffing trolley travel wheel anti-slip device according to claim 5, characterized in that: The outer side of the snap ring (54) is in contact with the wheel bearing (3), the inner side of the snap ring (54) is snap-fitted with the shaft cap boss of the pin shaft (4), and the inner diameter of the snap ring (54) is snap-fitted with the outer side of the shaft rod of the pin shaft (4).

7. The tower crane luffing trolley travel wheel anti-slip device according to claim 5, characterized in that: The outer side wall of the protruding cylinder (53) and the other side of the large circular cover surface (51) form an inwardly concave arc (55), and the outer periphery of the clamping ring (54) is arranged as an outwardly convex arc (56).

8. The tower crane luffing trolley travel wheel anti-slip device according to claim 5, characterized in that: The inner diameter of the through hole (52) of the large circular cover surface (51) is the same as the inner diameter of the protruding cylinder (53), and the outer diameter of the clamping ring (54) is the same as the inner diameter of the protruding cylinder (53).

9. The tower crane luffing trolley travel wheel anti-slip device according to claim 1, characterized in that: The outer diameter of the shaft of the pin shaft (4) is the same as the inner diameter of the snap ring (54), and the outer diameter of the shaft cap boss of the pin shaft (4) is the same as the inner diameter of the protruding cylinder (53).

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