CN104150368A - Lightweight lifting mechanism of bridge crane - Google Patents

Abstract

The invention relates to a lifting mechanism of a lightweight bridge crane, which belongs to the technical field of transportation machinery and equipment. The invention includes a motor, a shaft coupling, a reducer support seat, a left end cover of a reel, a reel, a right end cover of a reel, a bearing seat, a brake, an output shaft of a motor, an input shaft of a reducer, a reducer, an output shaft of a reducer, a reducer The output shaft of the motor is connected to the input shaft of the reducer through a coupling, and after being decelerated by the reducer located inside the reel, the output shaft of the reducer is connected to the right end cover of the reel through a spline. The output shaft of the reducer is supported on one side of the bearing seat at the same time, and the other side of the bearing seat is provided with a brake. The right end cover of the reel is connected with the left end cover of the reel through the reel. The end cover is fixed on the support base of the reducer. The invention has the advantages of small volume, large bearing capacity and stable operation; the self-weight of the hoisting mechanism is reduced, and the hoisting weight is increased.

Description

Lifting mechanism of a lightweight bridge crane

technical field

The invention relates to a lifting mechanism of a lightweight bridge crane, which belongs to the technical field of transportation machinery and equipment.

Background technique

Bridge cranes are lifting equipment for lifting materials across the workshop, warehouse and stockyard, and are widely used in various fields of the national economy. The bridge crane does not need to occupy the main ground in the building, but it can use various places in the building as the working area for efficient material hoisting. As an integral part of the bridge crane, the lifting mechanism realizes the material hoisting function of the bridge crane.

In the design process of the hoisting mechanism, due to safety concerns, a higher safety factor is often selected, resulting in excessive self-weight and overall size of the hoisting mechanism structure, which is not conducive to the reduction of the overall weight of the bridge crane; The placement of components is often too scattered, which not only takes up a large space, but also adds some unnecessary components, resulting in excessive weight of the crane lifting mechanism; in most existing bridge crane lifting mechanisms, the brake setting For the high-speed shaft of the reducer, when the bridge crane hoisting materials, once the gear or shaft inside the reducer is damaged due to fatigue and other reasons, the brake will not be able to perform the braking function, and the material will accelerate and fall from a high altitude, which will cause serious damage to the staff. pose a great security risk.

Contents of the invention

The invention provides a lifting mechanism of a lightweight bridge crane, which is used to solve the problems of large volume, heavy weight and low reliability of the existing lifting mechanism.

The technical solution of the present invention is: a lightweight bridge crane lifting mechanism, including a motor 1, a coupling 2, a reducer support seat 3, a drum left end cover 4, a drum 5, a drum right end cover 6, a bearing Seat 7, brake 8, motor output shaft 9, reducer input shaft 10, reducer 11, reducer output shaft 12, reducer end cover 13, spline 14; wherein the motor output shaft 9 of the motor 1 passes through the coupling 2 It is connected with the input shaft 10 of the reducer, after being decelerated by the reducer 11 located inside the reel 5, the output shaft 12 of the reducer is connected to the right end cover 6 of the reel through the spline 14, and the output shaft 12 of the reducer is supported on the bearing seat 7 at the same time On one side, the other side of the bearing seat 7 is provided with a brake 8, the right end cover 6 of the reel is connected with the left end cover 4 of the reel through the reel 5, the left end cover 4 of the reel is supported on the end cover 13 of the reducer, and the end cover of the reducer 13 is fixed on the reducer support seat 3.

The motor 1 is a brake motor.

The reel 5 is shaped by coiled plate welding or made of seamless steel pipe profiles.

The reel left end cap 4 and reel right end cap 6 are web-type structures; wherein the reel left end cap 4 and the reel right end cap 6 are bolted or welded on the reel 5 .

The brake 8 is a disc brake or a drum brake.

The output shaft 9 of the motor and the output shaft 12 of the reducer are coaxial.

The reducer 11 is a 2K-H type multi-stage planetary gear reducer.

The 2K-H type multi-stage planetary gear reducer is a 2K-H type 2-stage planetary gear reducer or a 2K-H type 3-stage planetary gear reducer.

The reducer end cover 13 is fixed on the reducer support base 3 through a cover plate and bolts.

The splines 14 are rectangular splines.

The working principle of the present invention is:

Install the lifting mechanism on the trolley frame of the bridge crane, start the motor 1 with braking function, and drive the input shaft 10 of the reducer to rotate through the coupling 2, and the 2K-H multi-stage planetary gear reducer 11 After deceleration, the output shaft 12 of the reducer is connected to the right end cover 6 of the reel through the spline 14, thereby driving the reel 5 to rotate around the reel support seat 3 and the bearing seat 7, thereby realizing the function of lifting heavy objects. The normal operation of the hoisting mechanism can be realized by starting, stopping and braking the motor 1 with the braking function.

In addition, once the transmission system of the hoisting mechanism breaks down, the emergency braking of the drum 5 can be realized through the brake 8 to prevent the crane from slipping.

The beneficial effects of the present invention are:

1. The hoisting mechanism reducer adopts multi-stage 2K-H planetary gear transmission. Compared with the parallel shaft gearbox, the planetary gear reducer is small in size, large in carrying capacity and stable in operation.

2. The reducer is built in the reel, which has a compact structure, effectively saves space, reduces the self-weight of the lifting mechanism, and increases the lifting weight, thereby reducing production and use costs.

3. The lifting mechanism adopts the dual braking mode of motor brake and drum mechanical brake, which improves the reliability of the lifting mechanism and reduces the probability of safety accidents.

4. The planetary reducer and the motor maintain coaxial power transmission, the radial load of the transmission system is small, the force of the lifting mechanism is uniform, the contact fatigue failure rate of the rotor system is low, and the operation is more stable.

5. The end cover of the reel adopts the radial plate structure, and the convection ventilation can improve the cooling effect of the lubricating oil of the built-in planetary reducer, and can reduce the overall weight of the reel.

Description of drawings

Fig. 1 is the front view of the present invention;

Fig. 2 is the top view of the present invention;

Fig. 3 is a schematic diagram of the internal structure of the reel of the present invention;

Fig. 4 is a structural schematic diagram of the reducer of the present invention;

The labels in the figure: 1-motor, 2-coupling, 3-reducer support seat, 4-reel end cover Ⅰ, 5-reel, 6-reel end cover Ⅱ, 7-bearing seat, 8- Brake, 9-motor output shaft, 10-reducer input shaft, 11-reducer, 12-reducer output shaft, 13-reducer end cover, 14-spline.

Detailed ways

Embodiment 1: As shown in Figure 1-4, a lifting mechanism of a lightweight bridge crane includes a motor 1, a coupling 2, a reducer support seat 3, a drum left end cover 4, a drum 5, and a drum Right end cover 6, bearing seat 7, brake 8, motor output shaft 9, reducer input shaft 10, reducer 11, reducer output shaft 12, reducer end cover 13, spline 14; among them, motor output shaft 9 of motor 1 It is connected with the reducer input shaft 10 through the coupling 2, and after being decelerated by the reducer 11 located inside the reel 5, the output shaft 12 of the reducer is connected to the right end cover 6 of the reel through the spline 14, and the output shaft 12 of the reducer is simultaneously Supported on one side of the bearing seat 7, the other side of the bearing seat 7 is provided with a brake 8, the right end cover 6 of the reel is connected with the left end cover 4 of the reel through the reel 5, and the left end cover 4 of the reel is supported on the end cover 13 of the reducer , The reducer end cover 13 is fixed on the reducer support base 3 .

The motor 1 is a brake motor.

The reel 5 is formed by welding a coiled plate.

The reel left end cap 4 and reel right end cap 6 are web-type structures; wherein the reel left end cap 4 and the reel right end cap 6 are bolted or welded on the reel 5 .

The brake 8 is a disc brake.

The output shaft 9 of the motor and the output shaft 12 of the reducer are coaxial.

The reducer 11 is a 2K-H type 2-stage planetary gear reducer.

The reducer end cover 13 is fixed on the reducer support base 3 through a cover plate and bolts.

The splines 14 are rectangular splines.

Embodiment 2: As shown in Figures 1-4, a lifting mechanism of a lightweight bridge crane is basically the same as that of Embodiment 1, except that the reducer 11 is a 2K-H type 3-stage planetary gear reducer.

Embodiment 3: As shown in Figures 1-4, a lifting mechanism of a lightweight bridge crane is basically the same as that of Embodiment 1, except that the brake 8 is a drum brake; the speed reducer 11 is 2K-H Type 2 planetary gear reducer.

Embodiment 4: As shown in Figure 1-4, a lifting mechanism of a lightweight bridge crane is basically the same as in Embodiment 1, except that the brake 8 is a drum brake; the speed reducer 11 is 2K-H Type 3 planetary gear reducer.

Embodiment 5: As shown in Figures 1-4, a lifting mechanism of a lightweight bridge crane is basically the same as that of Embodiment 1, except that the reel 5 is made of seamless steel pipe profiles; the brake 8 is a disc type brake; the reducer 11 is a 2K-H type 2-stage planetary gear reducer.

Embodiment 6: As shown in Figures 1-4, a lifting mechanism of a lightweight bridge crane is basically the same as in Embodiment 1, except that the reel 5 is made of seamless steel pipe profiles; the brake 8 is a disc type brake; the reducer 11 is a 2K-H type 3-stage planetary gear reducer.

Embodiment 7: As shown in Figures 1-4, a lifting mechanism of a lightweight bridge crane is basically the same as in Embodiment 1, except that the reel 5 is made of seamless steel pipe profiles; the brake 8 is a drum type brake; the reducer 11 is a 2K-H type 2-stage planetary gear reducer.

Embodiment 8: As shown in Figures 1-4, a lifting mechanism of a lightweight bridge crane is basically the same as in Embodiment 1, except that the reel 5 is made of seamless steel pipe profiles; the brake 8 is a drum type brake; the reducer 11 is a 2K-H type 3-stage planetary gear reducer.

The specific implementation of the present invention has been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned implementation, within the knowledge of those of ordinary skill in the art, it can also be made without departing from the gist of the present invention. Variations.

Claims (10)

1. a lightweight bridge crane hoisting mechanism, is characterized in that: comprise electrical motor (1), coupler (2), retarder supporting seat (3), reel left end cap (4), reel (5), reel right end cap (6), bearing seat (7), drg (8), motor output shaft (9), reducer input shaft (10), retarder (11), reducer output shaft (12), retarder end cap (13), spline (14), wherein the motor output shaft (9) of electrical motor (1) is connected with reducer input shaft (10) through coupler (2), after being positioned at inner retarder (11) deceleration of reel (5), be connected to reel right end cap (6) and reducer output shaft (12) is supported in bearing seat (7) one sides simultaneously by reducer output shaft (12) through spline (14), the opposite side of bearing seat (7) is provided with drg (8), reel right end cap (6) is connected with reel left end cap (4) through reel (5), reel left end cap (4) is supported on retarder end cap (13), retarder end cap (13) is fixed on retarder supporting seat (3).

2. lightweight bridge crane hoisting mechanism according to claim 1, is characterized in that: described electrical motor (1) is braking motor.

3. lightweight bridge crane hoisting mechanism according to claim 1, is characterized in that: described reel (5) is by roll bending welding fabrication or adopt solid drawn pipe section bar to make.

4. lightweight bridge crane hoisting mechanism according to claim 1, is characterized in that: described reel left end cap (4), reel right end cap (6) are plate spoke structure; Wherein reel left end cap (4), reel right end cap (6) are bolted or are welded on reel (5).

5. lightweight bridge crane hoisting mechanism according to claim 1, is characterized in that: described drg (8) is plate disc brake or drum brake mechanism.

6. lightweight bridge crane hoisting mechanism according to claim 1, is characterized in that: described motor output shaft (9) is concentric output with reducer output shaft (12).

7. lightweight bridge crane hoisting mechanism according to claim 1, is characterized in that: described retarder (11) is 2K-H type multi-stage planetary gear speed reducer.

8. lightweight bridge crane hoisting mechanism according to claim 7, is characterized in that: described 2K-H type multi-stage planetary gear speed reducer is 2 grades of epicyclic reduction gears of 2K-H type or 3 grades of epicyclic reduction gears of 2K-H type.

9. lightweight bridge crane hoisting mechanism according to claim 1, is characterized in that: described retarder end cap (13) is fixed on retarder supporting seat (3) by cover plate and bolt.

10. lightweight bridge crane hoisting mechanism according to claim 1, is characterized in that: described spline (14) is rectangular spline.