Multipurpose hoisting pulley mechanism

Abstract

A multipurpose hoisting pulley mechanism comprises a pulley body and a combined bearing, a sliding groove is formed in the outer circle of the pulley body, the depth of the sliding groove is larger than the diameter of a steel wire rope of the same type, a circular sliding groove is formed in the middle of one side of the pulley, the combined bearing is arranged in a bearing cavity according to requirements, and the combined bearing is composed of an outer bearing and an inner bearing. The outer diameter of the outer bearing is equal to the inner diameter of the bearing cavity, the inner bearing is arranged in the outer bearing according to requirements, and a shaft rod is arranged in the inner bearing. Due to the fact that the combined bearing of the pulley mechanism is composed of the inner bearing and the outer bearing, when one bearing breaks down, the other bearing can still work normally, and the work progress is not affected at all.

Description

Technical Field

[0001] The utility model relates to a crane field, in particular to a multi-purpose lifting pulley mechanism. Background Art

[0002] A pulley is a lifting accessory that supports the movement of a rope and is mostly used in fields such as dock lifting, mobile loading, and scenic area cable cars. It can effectively change the direction of the rope force, but cannot change the speed of the rope. Usually, the better the performance of the pulley, the smaller the resistance generated, and the worse the performance of the pulley, the greater the resistance generated.

[0003] The current single pulley is generally composed of a pulley body and a bearing. The pulley body is a circular structure, and a chute for steel rope winding is provided on the outer circle of the pulley body. The bearing is composed of an inner circle and an outer circle, and the bearing is arranged in the bearing cavity at the center of the pulley body as required. Although the single pulley has the advantages of simple structure, easy disassembly and installation, and flexible pulling, its drawback is that the bearing on the pulley may malfunction due to dry oil (the bearing continuously works to generate high temperature and causes the balls to dry and wear), affecting the work progress (pulley jamming is a common fault in lifting operations).

[0004] How to improve the existing pulley to overcome the above shortcomings and achieve the actual effects of stable performance and high work efficiency is a problem to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a multi-purpose lifting pulley mechanism. A chute is provided on the outer circle of the pulley body of the pulley mechanism, and a bearing cavity is provided at the central part of the pulley body. A combined bearing is arranged in the bearing cavity. Since the combined bearing of the pulley mechanism is composed of two bearings, an inner bearing and an outer bearing, when one of the bearings fails, the other bearing can still work normally.

[0006] The purpose of the utility model is realized by the following technical solutions: It includes a pulley body and a combined bearing. The pulley body is made of carbon steel. A chute is provided on the outer circle of the pulley body, and the depth in the chute > the diameter of the wire rope of the same model. A circular bearing cavity is provided at the center of one side of the pulley body, and a combined bearing is arranged in the bearing cavity as required. The combined bearing is made of carbon steel and is composed of an outer bearing and an inner bearing. The inner bearing is arranged in the outer bearing as required. A shaft rod is arranged in the inner bearing. The outer diameter of the outer bearing is equal to the inner diameter of the bearing cavity, and the inner diameter of the outer bearing is equal to the outer diameter of the inner bearing.

[0007] The beneficial effects of the present utility model are as follows: A combined bearing is arranged in the bearing cavity, which can effectively reduce the friction coefficient during the movement process and maintain the rotational accuracy of the bearing itself; an inner bearing is arranged inside the outer bearing, enabling both bearings to independently reduce the friction coefficient and resistance during the movement process; a shaft rod is horizontally arranged inside the inner cavity of the inner bearing, which is conducive to the overall installation and fixation of the pulley mechanism. Since the combined bearing of this pulley mechanism is composed of two inner and outer bearings, when one of the bearings fails, the other bearing can still operate normally without affecting the production progress at all, solving the deficiencies existing in the single pulley during work. Brief Description of the Drawings

[0008] Figure 1 It is a schematic structural diagram of the pulley body of the pulley mechanism of the present utility model.

[0009] Figure 2 It is a schematic installation diagram of the combined bearing of the pulley mechanism of the present utility model.

[0010] Figure 3 It is a schematic structural diagram of the combined bearing of the pulley mechanism of the present utility model.

[0011] Figure 4 It is a schematic overall planar diagram of the pulley mechanism of the present utility model.

[0012] Figure 5 It is a schematic overall installation diagram of the pulley mechanism of the present utility model.

[0013] Wherein: 1. Pulley body; 2. Chute; 3. Bearing cavity; 4. Combined bearing; 5. Outer bearing; 6. Inner bearing; 7. Shaft rod; 8. Engineering vehicle; 9. Winch; 10. Boom; 11. Steel wire rope; 12. Pulley sleeve. Detailed Description of the Preferred Embodiment

[0014] The present utility model will be further described below with reference to the accompanying drawings.

[0015] It should be noted that the orientation or positional relationship indicated by terms such as "one side", "both sides", "inside", "center position", "inner circle", "outer circle", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0016] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0017] See also Figure 1 The pulley body 1 is a circular structure, and a semicircular groove 2 is provided on the outer circle of the pulley body 1. A circular bearing cavity 3 that can only accommodate a combined bearing 4 is penetrated by the central parts of the two corresponding sides of the pulley body 1. In other words, a circular bearing cavity 3 is provided in the center of one side of the pulley body 1.

[0018] A slide groove 2 is arranged on the outer circumference of the pulley body 1 so that the steel wire rope 11 can be wound and directed.

[0019] The bearing cavity 3 is arranged inside the pulley body 1, which is beneficial to the installation and fixation of the combined bearing 4.

[0020] It should be noted that the diameter and thickness of the pulley body 1 should be determined according to the size of the pulley model.

[0021] It should be noted that the depth of the chute 2 is greater than the diameter of the wire rope 11 of the same type.

[0022] See also Figure 2 A combined bearing 4 is provided in the bearing cavity 3 as required, and both sides of the combined bearing 4 are flush with the outer side of the corresponding pulley body 1 .

[0023] The combined bearing 4 is arranged in the bearing cavity 3, which can reduce the friction coefficient during the movement and maintain the rotation accuracy of the combined bearing 4 itself, so that the pulley body 1 can effectively rotate in a directional manner.

[0024] It should be noted that the combined bearing 4 is arranged in the bearing cavity 3 without clearance.

[0025] See also Figure 3 The combined bearing 4 includes an outer bearing 5 and an inner bearing 6. The outer diameter of the outer bearing 5 is equal to the inner diameter of the bearing cavity 3. The inner diameter of the outer bearing 5 is equal to the outer diameter of the inner bearing 6. The thickness of the outer bearing 5 is equal to the thickness of the inner bearing 6.

[0026] It should be noted that the bearing has the same structure as the existing round ball bearing; the outer bearing 5 and the inner bearing 6 are both composed of an outer body and an inner body, and marbles are evenly arranged between each outer body and the corresponding inner body.

[0027] See also Figure 4, the inner bearing 6 is arranged inside the outer bearing 5 as required, and a cylindrical shaft rod 7 is arranged in the inner bearing 6 without clearance, and both ends of the shaft rod 7 extend outwards for a certain distance.

[0028] The inner bearing 6 is arranged inside the outer bearing 5 so that both bearings can independently reduce the friction coefficient and resistance during movement and maintain their respective rotational accuracies, enabling the pulley body 1 to rotate effectively in a specific direction.

[0029] The shaft rod 7 is horizontally arranged inside the inner bearing 6, which is beneficial to the overall installation and fixation of the pulley mechanism.

[0030] It should be noted that the outer circle of the combined bearing 4 is fixed to the inner circle of the bearing cavity 3 by welding.

[0031] It should be noted that the outer circle of the inner bearing 6 is fixed to the inner circle of the outer bearing 5 by welding.

[0032] In actual work, the outer bearing 5 can independently reduce the friction coefficient during movement and maintain its own rotational accuracy; the inner bearing 6 can independently reduce the friction coefficient during movement and maintain its own rotational accuracy.

[0033] When the inner bearing 6 is stuck due to damaged balls, the inner bearing 6 will form an integral body with the inner body of the outer bearing 5 and perform split-type rotation with the outer body of the outer bearing 5; when the outer bearing 5 is stuck due to damaged balls, the outer bearing 5 will form an integral body with the outer body of the inner bearing 6 and perform split-type non-resistance rotation with the inner body of the inner bearing 6.

[0034] In other words, when the inner bearing 6 is stuck due to damaged balls, the outer bearing 5 can eliminate the friction coefficient (resistance) between it and the inner bearing 6 and can work normally; when the outer bearing 5 is stuck due to damaged balls, the inner bearing 6 can eliminate the friction coefficient and resistance between it and the outer bearing 5 and can work normally.

[0035] During actual work (product testing), no matter which bearing fails, the other bearing can still operate as usual without affecting the production progress at all, solving the deficiencies existing in the single pulley during work.

[0036] When neither the outer bearing 5 nor the inner bearing 6 has a fault, the two bearings will synchronously maintain a certain rotational accuracy and eliminate the friction coefficient during movement respectively.

[0037] See Figure 5 , this pulley mechanism is a multi-purpose lifting support fitting, which can be installed alone or in combination on the platform robotic arm or the boom 10 of the engineering vehicle 8. Only one installation example is described in detail in this application.

[0038] The front platform of the crawler construction vehicle 8 is provided with a rotating body and a wire winder 9. An articulated boom 10 is obliquely arranged on the rotating body. One end of the articulated boom 10 is provided with a pulley sleeve 12. A pulley mechanism is installed in the pulley sleeve 12. One end of the steel wire rope 11 is wound tightly around the reel of the wire winder 9. The other end of the steel wire rope 11 bypasses the chute 2 on the upper side of the pulley mechanism and then extends downward for a certain distance. The end of the other end of the steel wire rope 11 is provided with a hanger.

[0039] It should be noted that the two ends of the shaft rod 7 are movably fixed in the shaft holes on both inner walls of the pulley sleeve 12.

[0040] The pulley mechanism of the present utility model has the following advantages: first, it is convenient for installation and disassembly; second, it rotates flexibly with a small friction coefficient; third, it has excellent performance and high working efficiency, and is not affected by the failure of a single bearing.

[0041] This implementation scheme is not the applicant's whim and speculation, but the result of several tests on physical products. Applying for a patent is to effectively protect this technical solution.

Claims

1. A multi-purpose lifting pulley mechanism, comprising a pulley body and a combined bearing, characterized in that: A chute is provided on the outer circumference of the pulley body, the depth of the chute > the diameter of the wire rope of the same model, a circular bearing cavity is provided in the middle of one side of the pulley, and a combined bearing is arranged in the bearing cavity as required. The combined bearing is composed of an outer bearing and an inner bearing.

2. The multi-purpose lifting pulley mechanism according to claim 1, characterized in that: The inner bearing is arranged inside the outer bearing.

3. The multi-purpose lifting pulley mechanism according to claim 1, characterized in that: A shaft rod is arranged inside the inner bearing.

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