阅读说明：本技术 一种起重机起升机构 (Hoisting mechanism of crane ) 是由 戚其松 李成刚 董青 范煜 贺宾 于燕南 陈钰浩 袁冰 徐格宁 于 2021-08-23 设计创作，主要内容包括：本发明公开了一种起重机起升机构,包括支架、双输出驱动电机、卷筒轴、卷筒和差速齿轮组。其中,双输出驱动电机固定于支架上,具有第一输出轴和第二输出轴；卷筒轴转动安装于支架上,包括同轴设置的第一卷筒轴和第二卷筒轴,第一卷筒轴与第二卷筒轴的转动方向相反且转速不同；卷筒同时套设于第一卷筒轴和第二卷筒轴外侧,卷筒的外侧用于卷绕缆线,第一卷筒轴和第二卷筒轴均通过轴承与卷筒转动连接；差速齿轮组位于卷筒内侧。相比于现有技术,本发明中双输出驱动电机的两个输出轴分别通过不同的传动机构驱动第一锥齿轮和第二锥齿轮反向且不同速旋转,使用单电机和单卷筒即可实现差速升降,自重更轻,稳定性更好,成本更低。(The invention discloses a hoisting mechanism of a crane, which comprises a bracket, a double-output driving motor, a drum shaft, a drum and a differential gear set. The double-output driving motor is fixed on the bracket and is provided with a first output shaft and a second output shaft; the winding drum shaft is rotatably arranged on the bracket and comprises a first winding drum shaft and a second winding drum shaft which are coaxially arranged, and the first winding drum shaft and the second winding drum shaft have opposite rotating directions and different rotating speeds; the winding drum is sleeved outside the first winding drum shaft and the second winding drum shaft at the same time, the outside of the winding drum is used for winding cables, and the first winding drum shaft and the second winding drum shaft are both rotationally connected with the winding drum through bearings; the differential gear set is located inside the spool. Compared with the prior art, the two output shafts of the double-output driving motor respectively drive the first bevel gear and the second bevel gear to rotate reversely and at different speeds through different transmission mechanisms, differential lifting can be achieved by using a single motor and a single winding drum, the self weight is lighter, the stability is better, and the cost is lower.)

1. A crane hoisting mechanism, comprising:

a support;

the double-output driving motor is fixed on the bracket and is provided with a first output shaft and a second output shaft;

the winding drum shaft is rotatably mounted on the support and comprises a first winding drum shaft and a second winding drum shaft which are coaxially arranged, the first winding drum shaft is in transmission connection with the first output shaft through a first transmission mechanism, the second winding drum shaft is in transmission connection with the second output shaft through a second transmission mechanism, and the first winding drum shaft and the second winding drum shaft rotate in opposite directions and at different rotating speeds;

the winding drum is sleeved on the outer sides of the first winding drum shaft and the second winding drum shaft, the outer sides of the winding drums are used for winding cables, and the first winding drum shaft and the second winding drum shaft are both in rotary connection with the winding drum through bearings;

be located the inboard differential gear set of reel, differential gear set includes first bevel gear, second bevel gear, third bevel gear and fourth bevel gear, first bevel gear with first reel axle is coaxial fixed, second bevel gear with the second reel axle is coaxial fixed, third bevel gear with fourth bevel gear all rotate install in on the reel, third bevel gear with fourth bevel gear all simultaneously with first bevel gear second bevel gear meshes, third bevel gear with coaxial and the axis of fourth bevel gear is followed the direction of diameter of reel sets up.

2. A crane hoist according to claim 1, wherein the first and second transmissions are both gear reduction mechanisms.

3. A crane hoist according to claim 2, wherein the first transmission is a primary gear reduction comprising a first input shaft, a first cylindrical gear and a second cylindrical gear; the first cylindrical gear is coaxially fixed on the first input shaft, the second cylindrical gear is coaxially fixed on the first reel shaft, the first cylindrical gear is meshed with the second cylindrical gear, and the first input shaft is connected with the first output shaft; the first input shaft and the first reel shaft are rotatably mounted on the bracket through bearing seats.

4. A crane hoist according to claim 3, wherein the first transmission further comprises a first coupling, the first input shaft is keyed to the first coupling and the first output shaft is keyed to the first coupling.

5. A crane hoist according to claim 4, wherein the first transmission further comprises a first brake mounted on the first coupling.

6. A crane hoisting mechanism as claimed in claim 2, wherein the second transmission mechanism is a two-stage gear reduction mechanism comprising a second input shaft, an intermediate shaft, a third cylindrical gear, a fourth cylindrical gear and a fifth cylindrical gear; the third cylindrical gear is coaxially fixed on the second input shaft, the fourth cylindrical gear is coaxially fixed on the intermediate shaft, the fifth cylindrical gear is coaxially fixed on the second winding drum shaft, the third cylindrical gear is meshed with the fourth cylindrical gear, the fourth cylindrical gear is meshed with the fifth cylindrical gear, and the second input shaft is connected with the second output shaft; the second input shaft, the middle shaft and the second drum shaft are rotatably arranged on the bracket through bearing seats.

7. A crane hoist according to claim 6, wherein the second transmission further comprises a second coupling, the second input shaft being keyed to the second coupling and the second output shaft being keyed to the second coupling.

8. A crane hoist according to claim 7, wherein the second transmission further comprises a second brake mounted on the second coupling.

9. The crane hoisting mechanism as claimed in claim 1, wherein the drum comprises a first drum, an intermediate drum and a second drum coaxially arranged and connected end to end in sequence by a fastener, the first drum shaft and the second drum shaft are both rotatably connected with the intermediate drum by bearings, and the third bevel gear and the fourth bevel gear are both rotatably mounted on the intermediate drum.

10. A crane hoist according to claim 9, wherein a reel hub is fixedly mounted in each of the first and second reels, and the first and second reel shafts each pass through the reel hub and are rotatably connected thereto by a bearing.

Technical Field

The invention relates to the technical field of hoisting mechanical equipment, in particular to a hoisting mechanism of a crane.

Background

The hoisting mechanism is a basic component of the crane, and the hoisting motor drives the winding drum to rotate, so that the cable wound on the winding drum drives the hook device on the cable to ascend or descend. The single-reel hoisting mechanism has the advantages of convenience in manufacturing and overhauling, simplicity in operation, convenience and rapidness in hoisting goods and the like, and becomes hoisting equipment frequently used in a factory. The existing hoisting mechanism mostly uses double motors and double drums to realize differential hoisting of goods, but the hoisting mechanism with the double motors and the double drums has the defects of large dead weight, poor stability, high cost and the like.

Disclosure of Invention

The invention aims to provide a hoisting mechanism of a crane, which realizes differential lifting by using a single motor and a single winding drum.

In order to achieve the purpose, the invention provides the following scheme:

the invention discloses a crane hoisting mechanism, comprising:

a support;

the double-output driving motor is fixed on the bracket and is provided with a first output shaft and a second output shaft;

the winding drum shaft is rotatably mounted on the support and comprises a first winding drum shaft and a second winding drum shaft which are coaxially arranged, the first winding drum shaft is in transmission connection with the first output shaft through a first transmission mechanism, the second winding drum shaft is in transmission connection with the second output shaft through a second transmission mechanism, and the first winding drum shaft and the second winding drum shaft rotate in opposite directions and at different rotating speeds;

the winding drum is sleeved on the outer sides of the first winding drum shaft and the second winding drum shaft, the outer sides of the winding drums are used for winding cables, and the first winding drum shaft and the second winding drum shaft are both in rotary connection with the winding drum through bearings;

be located the inboard differential gear set of reel, differential gear set includes first bevel gear, second bevel gear, third bevel gear and fourth bevel gear, first bevel gear with first reel axle is coaxial fixed, second bevel gear with the second reel axle is coaxial fixed, third bevel gear with fourth bevel gear all rotate install in on the reel, third bevel gear with fourth bevel gear all simultaneously with first bevel gear second bevel gear meshes, third bevel gear with coaxial and the axis of fourth bevel gear is followed the direction of diameter of reel sets up.

Preferably, the first transmission mechanism and the second transmission mechanism are both gear reduction mechanisms.

Preferably, the first transmission mechanism is a primary gear reduction mechanism and comprises a first input shaft, a first cylindrical gear and a second cylindrical gear; the first cylindrical gear is coaxially fixed on the first input shaft, the second cylindrical gear is coaxially fixed on the first reel shaft, the first cylindrical gear is meshed with the second cylindrical gear, and the first input shaft is connected with the first output shaft; the first input shaft and the first reel shaft are rotatably mounted on the bracket through bearing seats.

Preferably, the first transmission mechanism further comprises a first coupler, the first input shaft is connected with the first coupler key, and the first output shaft is connected with the first coupler key.

Preferably, the first transmission mechanism further comprises a first brake, and the first brake is mounted on the first coupling.

Preferably, the second transmission mechanism is a two-stage gear reduction mechanism, and comprises a second input shaft, an intermediate shaft, a third cylindrical gear, a fourth cylindrical gear and a fifth cylindrical gear; the third cylindrical gear is coaxially fixed on the second input shaft, the fourth cylindrical gear is coaxially fixed on the intermediate shaft, the fifth cylindrical gear is coaxially fixed on the second winding drum shaft, the third cylindrical gear is meshed with the fourth cylindrical gear, the fourth cylindrical gear is meshed with the fifth cylindrical gear, and the second input shaft is connected with the second output shaft; the second input shaft, the middle shaft and the second drum shaft are rotatably arranged on the bracket through bearing seats.

Preferably, the second transmission mechanism further comprises a second coupling, the second input shaft is in key connection with the second coupling, and the second output shaft is in key connection with the second coupling.

Preferably, the second transmission mechanism further comprises a second brake, the second brake being mounted on the second coupling.

Preferably, the reel includes coaxial setting and first reel, middle reel and the second reel that connects gradually end to end through the fastener, first reel axle with the second reel axle all through the bearing with middle reel is rotated and is connected, third bevel gear with fourth bevel gear all rotate install in on the middle reel.

Preferably, a reel hub is fixedly mounted in each of the first reel and the second reel, and the first reel shaft and the second reel shaft penetrate through the reel hubs and are rotatably connected with the reel hubs through bearings.

Compared with the prior art, the invention has the following technical effects:

according to the invention, two output shafts of the double-output driving motor respectively drive the first bevel gear and the second bevel gear to rotate reversely and at different speeds through different transmission mechanisms, and the first bevel gear and the second bevel gear drive the third bevel gear and the fourth bevel gear to rotate and simultaneously drive the winding drum to rotate, so that a cable on the outer side of the winding drum is wound or released. Therefore, the differential lifting device can realize differential lifting by using a single motor and a single winding drum, and has lighter self weight, better stability and lower cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a top view of a hoisting mechanism of a crane according to the embodiment;

FIG. 2 is a front view of a hoisting mechanism of the crane according to the embodiment;

FIG. 3 is a left side view of the hoisting mechanism of the crane according to the embodiment;

FIG. 4 is a schematic view of the internal structure of the roll;

description of reference numerals: 1-a second bearing block; 2-a second spool shaft; 3-a secondary reduction gear set; 4-a second reel; 5-intermediate reel; 6-a first reel; 7-a first reduction gear set; 8-a first spool shaft; 9-a first input shaft; 10-a first coupling; 11-a first brake; 12-dual output drive motors; 13-a second brake; 14-a second coupling; 15-a second input shaft; 16-a scaffold; 17-a first bearing seat; 18-a third bearing housing; 19-intermediate shaft; 20-a reel hub; 21-a first gear shaft; 22-a second gear shaft; 23-differential gear set.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a hoisting mechanism of a crane, which realizes differential lifting by using a single motor and a single winding drum.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1-4, the present embodiment provides a crane hoist including a support 16, a dual output drive motor 12, a spool shaft, a spool, and a differential gear set 23.

Wherein the dual-output drive motor 12 is fixed to the bracket 16, the dual-output drive motor 12 having a first output shaft and a second output shaft. The spool shaft is rotatably mounted on the bracket 16 and includes a first spool shaft 8 and a second spool shaft 2 coaxially disposed. First reel axle 8 is connected with first output shaft transmission through first drive mechanism, and second reel axle 2 is connected with second output shaft transmission through second drive mechanism, and first reel axle 8 is opposite and the rotational speed of second reel axle 2 is different. The reel is simultaneously located the first reel axle 8 and the 2 outsides of second reel axle in the cover, and the outside of reel is used for the coiling cable, and first reel axle 8 and second reel axle 2 all rotate with the reel through the bearing and are connected. A differential gear set 23 is located inside the spool, the differential gear set 23 including a first bevel gear, a second bevel gear, a third bevel gear, and a fourth bevel gear. The first bevel gear is fixed coaxially with the first spool shaft 8, and the second bevel gear is fixed coaxially with the second spool shaft 2. The third bevel gear and the fourth bevel gear are rotatably mounted on the winding drum, specifically, a first gear shaft 21 and a second gear shaft 22 are fixed on the winding drum, and the third bevel gear and the fourth bevel gear are rotatably mounted on the first gear shaft 21 and the second gear shaft 22 respectively. The third bevel gear and the fourth bevel gear are meshed with the first bevel gear and the second bevel gear simultaneously, and are coaxial, and the axes of the third bevel gear and the fourth bevel gear are arranged along the diameter direction of the winding drum.

When in use, because the first reel shaft 8 and the second reel shaft 2 rotate in opposite directions and at different speeds, the first bevel gear and the first reel shaft 8 are coaxially fixed, the second bevel gear and the second reel shaft 2 are coaxially fixed, so that the first bevel gear and the second bevel gear rotate in opposite directions and at different speeds,according to the transmission principle of the differential gear set 23, the first bevel gear and the second bevel gear drive the third bevel gear and the fourth bevel gear to rotate and simultaneously drive the winding drum to rotate, so that the cable outside the winding drum is wound or released. Taking the radius of the first bevel gear as R and the rotating speed as n₁(ii) a The radius of the second bevel gear is r, and the rotating speed is n₂(ii) a With the revolution speed (i.e. rotation speed) of the drum being n_gThen, from the operating principle of the differential gear set 23, it is known that:

the types of the first transmission mechanism and the second transmission mechanism are various, and can be selected by a person skilled in the art according to actual needs, such as a chain wheel and a chain transmission mechanism. In this embodiment, the first transmission mechanism and the second transmission mechanism are both gear reduction mechanisms.

Specifically, in this embodiment, the first transmission mechanism is a first-stage gear reduction mechanism, and includes a first input shaft 9, a first cylindrical gear and a second cylindrical gear. The first cylindrical gear is coaxially fixed on a first input shaft 9, the second cylindrical gear is coaxially fixed on a first reel shaft 8, the first cylindrical gear is meshed with the second cylindrical gear to form a primary reduction gear set 7, and the first input shaft 9 is connected with a first output shaft. The first input shaft 9 and the first spool shaft 8 are rotatably mounted on the bracket 16 through bearing blocks. A first output shaft of the double-output driving motor 12 drives the first input shaft 9 and the first cylindrical gear to rotate, and the first cylindrical gear drives the second cylindrical gear and the first reel shaft 8 to rotate in a meshing transmission mode.

The connection mode of the first input shaft 9 and the first output shaft is various, and the skilled person can flexibly select the connection mode according to different actual needs. In this embodiment, the first transmission mechanism further includes a first coupler 10, the first input shaft 9 is connected to the first coupler 10 in a key manner, and the first output shaft is connected to the first coupler 10 in a key manner.

In order to facilitate the braking of the first output shaft, the first transmission mechanism in this embodiment further includes a first brake 11, and the first brake 11 is mounted on the first coupling 10.

In this embodiment, the second transmission mechanism is a two-stage gear reduction mechanism, and includes a second input shaft 15, an intermediate shaft 19, a third cylindrical gear, a fourth cylindrical gear, and a fifth cylindrical gear, where the third cylindrical gear, the fourth cylindrical gear, and the fifth cylindrical gear form a two-stage reduction gear set 3. The third cylindrical gear is coaxially fixed on the second input shaft 15, the fourth cylindrical gear is coaxially fixed on the intermediate shaft 19, the fifth cylindrical gear is coaxially fixed on the second winding drum shaft 2, the third cylindrical gear is meshed with the fourth cylindrical gear, the fourth cylindrical gear is meshed with the fifth cylindrical gear, and the second input shaft 15 is connected with the second output shaft. The second input shaft 15, the intermediate shaft 19 and the second spool shaft 2 are rotatably mounted on the carrier 16 by means of bearing blocks. A second output shaft of the dual-output driving motor 12 drives the second input shaft 15 and the third cylindrical gear to rotate, the third cylindrical gear drives the fourth cylindrical gear and the intermediate shaft 19 to rotate in a meshing transmission mode, and the fourth cylindrical gear drives the fifth cylindrical gear and the second drum shaft 2 to rotate in a meshing transmission mode.

The connection mode of the second input shaft 15 and the second output shaft is various, and the skilled person can flexibly select the connection mode according to different actual needs. In this embodiment, the second transmission mechanism further includes a second coupling 14, a second input shaft 15 is keyed with the second coupling 14, and a second output shaft is keyed with the second coupling 14.

In order to facilitate the braking of the second output shaft, the second transmission mechanism in this embodiment further comprises a second brake 13, the second brake 13 being mounted on the second coupling 14.

For convenience of manufacture and assembly, the reel in this embodiment includes a first reel 6, an intermediate reel 5 and a second reel 4 which are coaxially arranged and are connected end to end in sequence by fasteners. First reel axle 8 and second reel axle 2 all rotate with middle reel 5 through the bearing and are connected, and third bevel gear and fourth bevel gear all rotate and install on middle reel 5. The fasteners may be bolt and nut assemblies, or may be other types of fasteners such as screws.

In order to better support the reel through the reel shaft, in the embodiment, the reel hubs 20 are fixedly mounted in the first reel 6 and the second reel 4, and the first reel shaft 8 and the second reel shaft 2 penetrate through the reel hubs 20 and are rotatably connected with the reel hubs 20 through bearings. The first spool shaft 8 and the second spool shaft 2 support the spool hub 20, thereby supporting the spool.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.