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

Abstract

The utility model provides a tower crane luffing trolley traveling wheel anti-falling mechanism, which belongs to the technical field of luffing trolley anti-falling, and 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 in the luffing trolley traveling wheel, the protective end cover is arranged on one side of the luffing trolley traveling wheel, and the pin shaft is arranged on the other side of the luffing trolley traveling 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, and safety and reliability are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to amplitude trolley anti -drop technical field especially relates to a tower crane amplitude trolley running wheel anti -drop mechanism. BACKGROUND

[0002] As the main engineering equipment in the construction, the use frequency and the working strength of the tower crane are relatively large, and the amplitude trolley on the jib is also a very frequent construction action of the back and forth load on the boom. The damage of the amplitude trolley running wheel bearing of the tower crane, the derailment of the amplitude trolley wheel lead to the safety accidents of the trolley frame and the falling of the hoisted load also often occur.

[0003] The existing detachable amplitude trolley running wheel anti -drop mechanism is connected with the pin shaft in the dismounting operation process, the pin shaft cap is in close contact with the bearing, the wheel surface is without end cover, the U-shaped baffle is used for separating and protecting the wheel shaft, two bolt pairs are needed for each wheel to fasten the U-shaped baffle, the structure is relatively single, the contact surface of the pin shaft cap and the bearing is small, the stress is relatively dispersed, and under the comprehensive influence of various reasons such as the scattered assembly parts, the loss in the hoisting process of the transfer transportation, the complicated dismounting, the easy missing or missing of the dismounting, and the low operation level of the dismounting operation personnel, the installation and dismounting of the connection position are relatively complicated. It does not meet the safe, efficient and energy-saving working mode in modern construction operation.

[0004] Therefore, it is extremely important to provide a safe and reliable, simple and convenient to manufacture, and forced protection anti -drop device for the construction equipment tower crane. SUMMARY

[0005] The utility model discloses a tower crane amplitude trolley running wheel anti -drop mechanism, solve the technical problem of the existing split detachable amplitude trolley running wheel anti -drop mechanism dismounting complicated, the utility model discloses a one -piece integrated protection end cap top tight with the contact surface of wheel bearing, realize the forced protection of the anti -drop protection, compact structure, simple and convenient to dismount, reduce the dismounting difficulty, and further effectively reduce the dismounting operation cost, improve work efficiency, and high safety.

[0006] In order to realize the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0007] A tower crane amplitude trolley running wheel anti -drop mechanism, including amplitude trolley frame, amplitude trolley running wheel, wheel bearing, pin shaft and protection end cap, wheel bearing is arranged inside amplitude trolley running wheel, protection end cap is arranged at one side of amplitude trolley running wheel, one end of pin shaft passes through amplitude trolley running wheel and is fixed on amplitude trolley frame, and one end of protection end cap is arranged between wheel bearing and the shaft cap boss of pin shaft.

[0008] Furthermore, the number of the wheel bearings is set to two, and elastic retaining rings for holes are respectively provided between the two wheel bearings and on the outsides 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 provided inside the pin shaft.

[0011] Furthermore, the protective end cover includes a large circular cover surface, a through hole is provided in the middle of the large circular cover surface, a protruding cylinder is provided on one side of the large circular cover surface, a clamping ring is provided 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 in contact with the wheel bearing, the inner side of the snap ring is engaged with the shaft cap boss of the pin shaft, and the inner diameter of the snap ring is 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 configured as an outwardly convex arc.

[0014] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0015] 1. The anti-slip mechanism of the utility model 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 or 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, disassembly and assembly are simple and convenient, the force is reasonable and efficient, and it is safe and reliable.

[0016] 2. The protective end cover of the utility model 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

[0017] Figure 1 It is a structural diagram of the anti-slip mechanism of the utility model;

[0018] Figure 2 This is a top view of the anti-slip mechanism of the utility model;

[0019] Figure 3 is the cross-sectional view of the anti-falling mechanism of the utility model;

[0020] Figure 4 is the top view of the protective end cover of the utility model;

[0021] Figure 5 is the cross-sectional view of the protective end cover of the utility model.

[0022] In the drawings, 1 is the amplitude car frame, 2 is the amplitude car walking wheel, 3 is the wheel bearing, 4 is the pin shaft, 5 is the protective end cover, 51 is the large round cover surface, 52 is the through hole, 53 is the protruding cylinder, 54 is the snap ring, 55 is the inwardly concave arc, 56 is the outwardly convex arc, 6 is the hole elastic baffle ring, 7 is the straight-through type pressure injection oil cup. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following preferred embodiments are referred to the drawings and are further described in detail.

[0024] As Figures 1-3 shown, a tower crane amplitude car walking wheel anti-falling mechanism, including amplitude car frame 1, amplitude car walking wheel 2, wheel bearing 3, pin shaft 4 and protective end cover 5, wheel bearing 3 is arranged in the inside of amplitude car walking wheel 2, protective end cover 5 is arranged in one side of amplitude car walking wheel 2, one end of pin shaft 4 passes through amplitude car walking wheel 2 and is fixed on amplitude car frame 1, and one end of protective end cover 5 is arranged between wheel bearing 3 and the shaft cap boss of pin shaft 4. The anti-falling mechanism of the utility model guarantees the performance and structural safety of amplitude car, and one end of protective end cover 5 is arranged between wheel bearing 3 and the shaft cap boss of pin shaft 4, the contact area of protective end cover 5 and wheel bearing surface is larger, when wheel bearing 3 is damaged and deformed, protective end cover 5 can effectively tighten wheel bearing 3 and prevent wheel bearing 3 from extruding, guarantee that amplitude car walking wheel 2 and pin shaft 4 can still be in an integral connection state, achieve the purpose of amplitude car walking wheel anti-falling, compact and simple structure, simple and convenient to disassemble and assemble, reasonable and efficient stress, safe and reliable.

[0025] As Figures 2-3As shown, there are two wheel bearings 3, and a hole-type elastic retaining ring 6 is provided between the two wheel bearings 3 and on the outside of the wheel bearings 3. The hole-type elastic retaining ring 6 is used to fix the axial movement of the wheel bearing 3 and prevent the wheel bearing 3 from moving 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 engaged 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, achieving forced protection and anti-slip protection. It has a simple structure and high safety. Disassembly and assembly are quick and convenient, greatly reducing the difficulty of disassembly and assembly, thereby effectively reducing disassembly and assembly costs and improving work efficiency. A straight-through pressure-injection oil cup 7 is provided inside the pin shaft 4. The straight-through pressure-injection oil cup 7 supplies oil to the wheel bearing 3 to increase lubrication of the contact surface between the wheel bearing 3 and the pin shaft 4. One end of the pin shaft 4 is engaged by a clamping plate, which is fastened to the variable-length trolley frame 1 by bolts.

[0026] like Figures 3-5 As shown, the protective end cap 5 includes a large circular cover surface 51 with a through hole 52 in the middle. A protruding cylinder 53 is provided on one side of the large circular cover surface 51, and a snap ring 54 is attached to 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 contacts the wheel bearing 3, ensuring that the snap ring 54 can press against the wheel bearing contact surface. The inner side of the snap ring 54 engages with the boss of the shaft cap of the pin 4, and the inner diameter of the snap ring 54 contacts the shaft of the pin 4. The outer wall of the protruding cylinder 53 forms an inwardly concave arc 55 with the other side of the large circular cover surface 51, and the outer circumference of the snap ring 54 is configured as an outwardly convex arc 56. The inner diameter of the through hole 52 in 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 utility model 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 tighten to prevent the wheel bearing from being squeezed out, ensuring that the traveling wheel 2 of the luffing 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 utility model is integrally formed, and realizes the function of preventing the wheel from falling off without interfering with the installation and tightening of the traveling wheel connecting frame of the luffing 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 play a sufficient role in enclosing the traveling wheel 2 of the luffing trolley, greatly improving the service life and safety of the traveling wheel 2 of the luffing trolley. The anti-slip mechanism of the utility model 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 tower crane luffing trolley walking wheel in a more effective, faster and more stable way.

[0027] The anti-falling mechanism of the split detachable amplitude car needs to be assembled and disassembled for many times, the process is complicated, and parts are easy to be lost during equipment transfer. The anti-falling mechanism is designed to be integrally assembled, the protective end cover is assembled before the pin shaft is installed, the clamping ring of the protective end cover is in contact with the wheel bearing, the wheel bearing contact surface can be tightly pressed, the forced protection of the anti-falling protection is realized, the pin shaft is sequentially inserted through the protective end cover and the amplitude car walking wheel, the shaft cap boss of the pin shaft is clamped on the clamping ring of the protective end cover, and the forced protection of the anti-falling of the wheel is achieved. The utility model guarantees the functionality and safety of the amplitude car walking wheel, maximally reduces the installation steps and adjustment time during installation, improves the installation efficiency, reduces the installation difficulty, and improves the safety and reliability.

[0028] The amplitude car walking wheel, the pin shaft, the anti-falling end cover and the wheel bearing are assembled to form a whole walking wheel assembly, the structure is more compact and simple, and the wheel anti-falling measure is more reasonable and efficient. The amplitude car walking wheel anti-falling mechanism can be quickly installed, the end cover is assembled before the pin shaft is installed, the pin shaft is connected, and the anti-falling requirement is achieved, the installation steps are simplified, and the installation can be completed through simple assembly. The safety and stability of the anti-falling mechanism structure and the rigidity of the whole car walking wheel assembly structure are fully considered, the amplitude car walking wheel anti-falling end cover realizes forced protection and anti-falling, and the visual effect is guaranteed.

[0029] Installation process

[0030] Two wheel bearings 3 are installed in the inside of the amplitude car walking wheel 2, elastic baffle rings 6 are installed between the two wheel bearings 3 and on one side of the wheel bearing 3, then the protective end cover 5 is installed on one side of the amplitude car walking wheel 2, the outer side of the clamping ring 54 of the protective end cover 5 is in contact with the wheel bearing 3, one end of the pin shaft 4 provided with the straight-through type pressure injection oil cup 7 is inserted through the protective end cover 5, the amplitude car walking wheel 2 and the amplitude car frame 1, one end of the pin shaft 4 is clamped with the clamping plate, the clamping plate is fastened on the amplitude car frame 1 through bolts, meanwhile, the shaft cap boss of the pin shaft 4 is clamped on the inner side of the clamping ring 54 of the protective end cover 5, the clamping 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 of the protective end cover 5 and the wheel bearing surface is large, when the wheel bearing 3 is damaged and deformed, the protective end cover 5 can effectively tightly press and prevent the wheel bearing from extruding, the amplitude car walking wheel 2 and the pin shaft 4 can still be in an integral connection state, and the purpose of wheel anti-falling is achieved.

[0031] The above merely is preferred implementation manner of the present application, it should be pointed out, for ordinary skilled person in the technical field, on the premise of not departing from the principle of the present application, can also make several improvements and refinements, these improvements and refinements also should be regarded as the protection scope of the present application.

Claims

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

3. The tower crane luffing trolley anti-slip mechanism according to claim 1 is characterized in that: The outer side of one end of the protective end cover (5) is 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 mechanism according to claim 1 is characterized in that: A straight-through pressure-injection oil cup (7) is provided inside the pin shaft (4).

5. The tower crane luffing trolley anti-slip mechanism according to claim 1 is 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 snap 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 snap ring (54) are integrally formed.

6. The tower crane luffing trolley anti-slip mechanism 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 clamped with the shaft cap boss of the pin shaft (4), and the inner diameter of the snap ring (54) is clamped with the outer side of the shaft rod of the pin shaft (4).

7. The tower crane luffing trolley travel wheel anti-slip mechanism 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 snap ring (54) is set to be an outwardly convex arc (56).

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