CN211895822U

CN211895822U - Lifting device

Info

Publication number: CN211895822U
Application number: CN202020214159.4U
Authority: CN
Inventors: 王磊; 王练; 李美钗
Original assignee: Shanghai Pohu Drive System Co ltd
Current assignee: Shanghai Pohu Drive System Co ltd
Priority date: 2020-02-26
Filing date: 2020-02-26
Publication date: 2020-11-10
Anticipated expiration: 2030-02-26

Abstract

The utility model discloses a lifting device, include: the hydraulic lifting device comprises a hydraulic motor, a lifting wheel, a speed reducer and a control valve group, wherein a connecting sleeve is fixedly arranged at the axle center of the lifting wheel, and a supporting bearing is arranged on the connecting sleeve; the output shaft of the hydraulic motor is connected with the key of the connecting sleeve, and the other end of the connecting sleeve is connected with the shaft key of the speed reducer; the control valve group is arranged on the hydraulic motor, an oil inlet, an oil outlet, a braking oil port and an oil discharging port are formed in the control valve group, the braking oil port is connected with a brake release oil port in the hydraulic motor through a steel pipe, the oil discharging port is connected with a motor oil discharging port in the hydraulic motor through a steel pipe, and the oil inlet and the oil outlet are connected with an oil tank through pipelines. The utility model discloses a hoist hoisting accessory adopts the hydraulic system drive, and hydraulic motor is the hydraulic pressure cycloid motor of taking the stopper of system integral type in, and its compact structure, the volume is littleer, adopts hydraulic control formula, hydraulic control valve convenient operation.

Description

Lifting device

Technical Field

The utility model relates to a hoisting device specifically is a hoisting device who uses in pit with the supporting of mining machinery, colliery.

Background

The hoist is an important part in hoisting equipment, and the existing hoisting hoists comprise a chain block, an electric hoist, a pneumatic hoist, a hydraulic hoist and the like. However, the hand chain block has high labor intensity and low working efficiency in use; when the electric hoist is used in a mine, explosion-proof measures are required to be taken, so that the electric hoist is complex in structure and large in size; the pneumatic hoist cannot be used under a mine due to the limitation of air source conditions, and the rated load of the pneumatic hoist is small; the traditional hydraulic hoist is driven by an emulsion motor and has small rated load; the calabash cannot be well matched with mining machinery due to self limitation. The existing hydraulic hoist is additionally provided with a brake at the output end of a hydraulic motor, and due to the defects of complex mechanism, inconvenient operation and large volume, a safe and reliable traction and braking lifting device which is suitable for underground coal mines and has the advantages of large load, small volume and light weight is urgently needed to solve the problem.

Disclosure of Invention

An object of the utility model is to provide a lifting device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a lifting device, comprising: the hydraulic lifting device comprises a hydraulic motor, a lifting wheel, a speed reducer and a control valve group, wherein a connecting sleeve is fixedly arranged at the axle center of the lifting wheel, and a supporting bearing is arranged on the connecting sleeve; the output shaft of the hydraulic motor is connected with the key of the connecting sleeve, and the other end of the connecting sleeve is connected with the shaft key of the speed reducer;

the control valve group is arranged on the hydraulic motor, an oil inlet, an oil outlet, a braking oil port and an oil discharging port are formed in the control valve group, the braking oil port is connected with a brake release oil port in the hydraulic motor through a steel pipe, the oil discharging port is connected with a motor oil discharging port in the hydraulic motor through a steel pipe, and the oil inlet and the oil outlet are connected with an oil tank through pipelines.

As a further aspect of the present invention: the hydraulic motor is an internal braking type cycloid hydraulic motor.

As a further aspect of the present invention: the speed reducer is a two-stage planetary speed reducer.

As a further aspect of the present invention: the control valve group comprises a first overflow valve, a second overflow valve, a balance valve and a shuttle valve, and the first overflow valve and the second overflow valve are arranged in a hydraulic motor loop; the balance valve is arranged at an oil inlet and an oil outlet of the hydraulic motor; the shuttle valve is respectively arranged on the oil inlet and the oil outlet.

Compared with the prior art, the beneficial effects of the utility model are that: the lifting device of the utility model is driven by a hydraulic system, the hydraulic motor is an integral hydraulic cycloid motor with a brake, the structure is compact, the volume is smaller, the service efficiency of the friction plate is improved, and the braking torque of the brake with the same specification is increased;

the lifting device is of a hydraulic control type, the hydraulic control valve is convenient to operate, the system pressure is protected, and the operation is more stable; the whole lifting device is connected by adopting an axial connecting sleeve, and the structure is simple.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the structure of the middle control valve set of the present invention.

Fig. 3 is a schematic diagram of a side view structure of the middle control valve group of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, in an embodiment of the present invention, a lifting device includes: the hydraulic brake system comprises a hydraulic motor 1, a lifting wheel 2, a speed reducer 3 and a control valve group 4, wherein the hydraulic motor 1 is an internal braking type cycloid hydraulic motor and consists of a cycloid motor and a multi-disc friction brake, and has the advantages of small radial size of the motor and high braking reliability and torque; the output shaft of the hydraulic motor 1 is in key connection with the connecting sleeve 5, the other end of the connecting sleeve 5 is in key connection with the shaft of the speed reducer 3, the speed reducer 3 is in two-stage planetary speed reduction, the high-speed rotation of the hydraulic motor 1 is reduced in speed to increase torque, and the hoisting speed is controlled;

the control valve group 4 is arranged on the hydraulic motor 1, the control valve group 4 comprises a first overflow valve 15, a second overflow valve 16, a balance valve 17 and a shuttle valve 18, the control valve group 4 is provided with an oil inlet 6, an oil outlet 7, a brake oil port 8 and an oil discharge port 13, the brake oil port 8 is connected with a brake release oil port 10 on the hydraulic motor 1 through a first steel pipe 9, the oil discharge port 13 is connected with a motor oil discharge port 11 on the hydraulic motor 1 through a second steel pipe 12, the brake release oil port 10 and the motor oil discharge port 11 are both inherent structures of the existing internal braking type cycloid hydraulic motor, the oil inlet 6 and the oil outlet 7 can be connected with an oil tank (not shown in the figure) through pipelines, and the first overflow valve 15 and the second overflow valve 16 are arranged in a loop of the hydraulic motor 1 for limiting system pressure and playing a role in overload protection; the balance valve 17 is arranged at the oil inlet and the oil outlet of the hydraulic motor 1, so that the problem of stalling when the lifting is lowered can be prevented; the shuttle valves 18 are respectively arranged on the oil inlet 6 and the oil outlet 7, and the shuttle valves 18 take oil from the high-pressure ends of the oil inlet and the oil outlet to the brake so as to release the brake.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A lifting device, comprising: hydraulic motor (1), lift by crane wheel (2), speed reducer (3) and valves (4), its characterized in that: a connecting sleeve (5) is fixedly arranged at the axle center of the hoisting wheel (2), and a supporting bearing (14) is arranged on the connecting sleeve (5); an output shaft of the hydraulic motor (1) is fixedly connected with a connecting sleeve (5), and the other end of the connecting sleeve (5) is fixedly connected with a shaft of the speed reducer (3);

the hydraulic motor brake system is characterized in that the control valve group (4) is arranged on the hydraulic motor (1), an oil inlet (6), an oil outlet (7), a brake oil port (8) and an oil discharge port (13) are arranged on the control valve group (4), the brake oil port (8) is connected with a brake release oil port (10) on the hydraulic motor (1) through a steel pipe, the oil discharge port (13) is connected with a motor oil discharge port (11) on the hydraulic motor (1) through a steel pipe, and the oil inlet (6) and the oil outlet (7) are connected with an oil tank through a pipeline.

2. A lifting device as claimed in claim 1, characterized in that: the hydraulic motor (1) is an internal braking type cycloid hydraulic motor.

3. A lifting device as claimed in claim 1, characterized in that: the speed reducer (3) is a two-stage planetary speed reducer.

4. A lifting device as claimed in claim 1, characterized in that: the control valve group (4) comprises a first overflow valve (15), a second overflow valve (16), a balance valve (17) and a shuttle valve (18), and the first overflow valve (15) and the second overflow valve (16) are arranged in a loop of the hydraulic motor (1); the balance valve (17) is arranged at an oil inlet and an oil outlet of the hydraulic motor (1); the shuttle valve (18) is respectively arranged on the oil inlet (6) and the oil outlet (7).