Compact tower crane hoisting mechanism

Abstract

The utility model discloses a compact tower crane hoisting mechanism, which comprises a machine frame, a hoisting motor, a speed reducer, a winding drum and a winding drum shaft, one end of the machine frame is fixedly connected with a motor support, the hoisting motor is fixedly arranged on the motor support, the machine frame is fixedly connected with a speed reducer support and a winding drum support from left to right along the axial direction of the hoisting motor, and the winding drum shaft is fixedly arranged on the speed reducer support. The speed reducer is fixedly arranged on the speed reducer support, the lifting motor is in transmission connection with the speed reducer through the coupler, one end of the winding drum shaft is in transmission connection with the speed reducer, and the other end of the winding drum shaft is rotationally connected with the winding drum support. The lifting mechanism is reasonable in structural design, the lifting motor, the speed reducer and the winding drum are arranged on the same axis, transmission efficiency is improved, structural energy consumption is reduced, meanwhile, the winding drum is provided with the containing cavity, the speed reducer can extend into the containing cavity, the total length of the lifting mechanism is reduced, and therefore the occupied space of the lifting mechanism on the balance arm is reduced, and the lifting mechanism is convenient to use. And maintenance work is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of tower cranes, in particular to a compact tower crane hoisting mechanism. Background Technique

[0002] The hoisting mechanism is an essential and important component for lifting objects in tower cranes, and its performance directly affects the use effect of tower cranes. The hoisting mechanism mainly includes components such as a hoisting motor, a coupling, a brake, a reducer, and a drum. The hoisting motor drives the drum to rotate by connecting the reducer through a coupling, so that the wire rope / cable wound on the drum drives the hook device to rise or fall. The hoisting mechanism is usually installed on the balance arm of the tower crane. Due to the relatively narrow space of the tower arm, for the existing hoisting mechanisms, whether it is an "L"-type hoisting mechanism or a "∏"-shaped hoisting mechanism, their floor areas are relatively large, making the maintenance space very narrow, which causes many inconveniences to the maintenance work of the hoisting mechanism that belongs to high-altitude operations. Content of the Utility Model

[0003] The purpose of the utility model is to provide a compact tower crane hoisting mechanism to solve the problems raised in the background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A compact tower crane hoisting mechanism includes a frame, a hoisting motor, a reducer, a drum, and a drum shaft. One end of the frame is fixedly connected with a motor bracket, and the hoisting motor is fixedly arranged on the motor bracket. The frame is fixedly connected with a reducer bracket and a drum bracket from left to right along the axial direction of the hoisting motor. The reducer is fixedly arranged on the reducer bracket. The hoisting motor is in transmission connection with the reducer through a coupling. One end of the drum shaft is in transmission connection with the reducer, and the other end is rotatably connected with the drum bracket. The drum is located between the reducer bracket and the drum bracket and is in transmission connection with the drum shaft. The hoisting motor, the reducer, and the drum are coaxial, and the reducer extends into the drum.

[0006] Further, a bearing seat is fixedly arranged on the upper part of the drum bracket. One end of the drum shaft is in transmission connection with the reducer through a spline, and the other end extends into the bearing seat and is rotatably connected with the drum bracket.

[0007] Further, the drum includes a drum body and a partition plate. The partition plate is located in the middle of the drum body and is fixedly connected with the drum body. The partition plate divides the left inner space of the drum body into a receiving cavity.

[0008] Further, a spacer sleeve is fixedly arranged at the central part of the partition plate. A flange is fixedly arranged at one end of the drum body close to the drum bracket. The drum shaft passes through the spacer sleeve and is in transmission connection with the flange through a spline.

[0009] Furthermore, the coupling ring is provided with an electro-hydraulic brake for braking the coupling. The electro-hydraulic brake is fixedly connected to the motor bracket, and a protective cover is fixedly arranged outside the electro-hydraulic brake.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. The structure of the present utility model is reasonably designed. By arranging the hoisting motor, the reducer and the drum on the same axis, the transmission efficiency is improved and the structural energy consumption is reduced. At the same time, the drum is provided with a receiving cavity, and the reducer can extend into the receiving cavity, reducing the overall length of the hoisting mechanism, thereby reducing the occupied space of the hoisting mechanism on the balance arm and facilitating the maintenance work.

[0012] 2. Since the hoisting motor, the reducer and the drum are arranged on the same axis, there is no interference or constraint in the diameter direction of the drum. Therefore, a large-diameter drum can be used. On the premise of the same rope capacity of the drum, the axial length of the drum can be further shortened, further reducing the overall length of the hoisting mechanism. At the same time, the rope laying effect of the steel wire rope on the drum can be improved, and the service life of the steel wire rope can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a left view of the present utility model;

[0015] In the figure: 1 - frame, 2 - motor bracket, 3 - hoisting motor, 4 - coupling, 5 - electro-hydraulic brake, 6 - protective cover, 7 - reducer, 8 - reducer bracket, 9 - drum, 901 - drum body, 902 - partition, 903 - receiving cavity, 904 - spacer sleeve, 905 - flange, 10 - drum shaft, 11 - drum bracket, 12 - bearing seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Please refer to Figure 1 - Figure 2 , an embodiment provided by the present utility model:

[0018] A compact hoisting mechanism for tower cranes, comprising a frame 1, a hoisting motor 3, a speed reducer 7, a drum 9 and a drum shaft 10. One end of the frame 1 is welded with a motor bracket 2, and the hoisting motor 3 is fixedly installed on the motor bracket 2. Along the axial direction of the hoisting motor 3 from left to right, the frame 1 is welded with a speed reducer bracket 8 and a drum bracket 11. The speed reducer 7 is fixedly installed on the speed reducer bracket 8. The hoisting motor 3 is drivingly connected to the speed reducer 7 through a coupling 4. One end of the drum shaft 10 is drivingly connected to the speed reducer 7, and the other end is rotatably connected to the drum bracket 11. The drum 9 is located between the speed reducer bracket 8 and the drum bracket 11 and is drivingly connected to the drum shaft 10. The hoisting motor 3, the speed reducer 7 and the drum 9 are coaxial, and the speed reducer 7 extends into the drum 9, which can reduce the overall length of the hoisting mechanism, thereby reducing the occupied space of the hoisting mechanism on the counter jib and facilitating the maintenance work.

[0019] Wherein, a bearing seat 12 is fixedly installed on the upper part of the drum bracket 11. One end of the drum shaft 10 is drivingly connected to the speed reducer 7 through a spline, and the other end extends into the bearing seat 12 and is rotatably connected to the drum bracket 11.

[0020] Wherein, the drum 9 includes a drum body 901 and a partition plate 902. The partition plate 902 is located in the middle of the drum body 901 and is welded to the drum body 901. The partition plate 902 divides the left part of the inner space of the drum body 901 into a receiving cavity 903, and the output end of the speed reducer 7 is placed in the receiving cavity 903, thereby reducing the overall length of the hoisting mechanism.

[0021] Wherein, a spacer sleeve 904 is fixedly arranged at the central part of the partition plate 902. A flange 905 is fixedly installed at one end of the drum body 901 close to the drum bracket 11. The flange 905 is provided with an internal spline. After passing through the spacer sleeve 904, the drum shaft 10 is drivingly connected to the flange 905 through a spline. The rotation support of the drum body 901 is realized through the spacer sleeve 904 and the flange 905, so that the drum body 901 rotates smoothly. When the hoisting mechanism works, the hoisting motor 3 drives the speed reducer 7 and the drum shaft 10 to rotate through the coupling 4, and the drum shaft 10 drives the drum 9 to rotate through the flange 905.

[0022] Wherein, the coupling 4 is provided with an electro-hydraulic brake 5 for braking the coupling 4. The electro-hydraulic brake 5 is fixedly installed on the motor bracket 2, and a protective cover 6 is fixedly installed outside the electro-hydraulic brake 5 to protect the electro-hydraulic brake 5 from the external environment.

[0023] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compact hoisting mechanism for tower cranes, comprising a frame (1), a hoisting motor (3), a reducer (7), a drum (9) and a drum shaft (10), characterized in that: One end of the frame (1) is fixedly connected with a motor bracket (2), the hoisting motor (3) is fixedly arranged on the motor bracket (2), the frame (1) is fixedly connected with a reducer bracket (8) and a drum bracket (11) from left to right along the axial direction of the hoisting motor (3), the reducer (7) is fixedly arranged on the reducer bracket (8), the hoisting motor (3) is in transmission connection with the reducer (7) through a coupling (4), one end of the drum shaft (10) is in transmission connection with the reducer (7), and the other end is rotatably connected with the drum bracket (11). The drum (9) is located between the reducer bracket (8) and the drum bracket (11) and is in transmission connection with the drum shaft (10). The hoisting motor (3), the reducer (7), and the drum (9) are coaxial, and the reducer (7) extends into the drum (9).

2. The compact tower crane hoisting mechanism according to claim 1, wherein: A bearing seat (12) is fixedly arranged on the upper part of the drum bracket (11). One end of the drum shaft (10) is in transmission connection with the reducer (7) through a spline, and the other end extends into the bearing seat (12) and is rotatably connected with the drum bracket (11).

3. The compact tower crane hoisting mechanism according to claim 1, characterized in that: The drum (9) includes a drum body (901) and a partition plate (902). The partition plate (902) is located in the middle of the drum body (901) and is fixedly connected with the drum body (901). The partition plate (902) divides the left inner space of the drum body (901) into a receiving cavity (903).

4. A compact tower crane hoisting mechanism according to claim 3, characterized in that: A spacer sleeve (904) is fixedly arranged at the central part of the partition plate (902). A flange (905) is fixedly arranged at one end of the drum body (901) close to the drum bracket (11). The drum shaft (10) passes through the spacer sleeve (904) and is in transmission connection with the flange (905) through a spline.

5. A compact tower crane hoisting mechanism according to claim 1, characterized in that: The coupling (4) is provided with an electro-hydraulic brake (5) for braking the coupling (4) in a ring shape. The electro-hydraulic brake (5) is fixedly connected with the motor bracket (2), and a protective cover (6) is fixedly arranged outside the electro-hydraulic brake (5).

Images