CN202031593U - Hydraulic motor driven mining underground coal plough - Google Patents

Abstract

A hydraulic motor driven mining underground coal plough comprises a motor, a sprocket shaft set, a reversible variable constant-power hydraulic pump, an oil tank and a quantitative hydraulic motor, wherein the hydraulic pump is connected with a motor output shaft through an elastic coupling, the hydraulic pump, the oil tank and the hydraulic motor are mutually communicated through oil pipes, oil is transmitted to the quantitative hydraulic motor through a closed hydraulic system, and the hydraulic moor is connected with the sprocket shaft set through internal splines. Motor mechanical energy is converted into oil hydraulic pressure energy, and the hydraulic motor is small in size, light in weight and small in motion inertia, and has small affection on the sprocket shaft set when in frequent start and stop, when starting with high torque, when speed regulation is needed and when reversely rotating.

Description

Fluid motor-driven is mining down-hole coal plough

Technical field

The utility model relates to the mining down-hole of a kind of fluid motor-driven coal plough.

Background technology

Existing mining coal plough comprises motor, reducer and sprocket shaft group, the output shaft of motor is connected with input shaft of speed reducer by spline, the output shaft of reducer is connected with the sprocket shaft group of coal plough by internal spline, during work, mining driven by motor reducer rotates, reducer drives the sprocket shaft group and rotates, the shortcoming that this mining coal plough exists is: the big weight of reducer volume that drives the rotation of sprocket shaft group is big, it is big that it drives sprocket shaft group dynamic moment of inertia, moment of torsion is big, when frequent start-stop, big starting torque, need occasion and when counter-rotating of speed governing, big to the influence of sprocket shaft group.

The utility model content

The purpose of this utility model provides the mining down-hole of a kind of fluid motor-driven coal plough, its drive the driving mechanism volume of sprocket shaft group little in light weight, movement inertia is little, when frequent start-stop, little when big starting torque, the occasion that needs speed governing and counter-rotating to the influence of sprocket shaft group.

In order to realize such scheme, technical solution of the present utility model is: a kind of fluid motor-driven is mining down-hole coal plough, comprise motor and sprocket shaft group, but the permanent power hydraulic pump, fuel tank and the constant displacement hydraulic motor that wherein also comprise bidirectional variable, described hydraulic pump is connected with motor output shaft by yielding coupling, be interconnected by oil pipe line respectively between described hydraulic pump, fuel tank and the hydraulic motor, described hydraulic motor output shaft is connected with the sprocket shaft group by internal spline.

The mining coal plough of the utility model, first oil drain out of wherein said hydraulic pump, first oil return opening passes through oil inlet pipe respectively, advancing of first oil return pipe and hydraulic motor, oil drain out connects, be respectively equipped with first on the described oil inlet pipe and first oil return pipe, two control valves, second oil return opening on the described hydraulic pump is communicated with the bottom of fuel tank by second oil return pipe, second oil drain out of described hydraulic pump is communicated with first filter pump by the repairing pipe, first filter pump is communicated with fuel tank, described first filter pump is provided with the 3rd control valve, the drain tap of described hydraulic motor is communicated with second filter pump by drain mast, described second filter pump is communicated with fuel tank, and described second filter pump is provided with the 4th control valve.

After adopting such scheme, but the utility model fluid motor-driven is mining down-hole coal plough is by at the permanent power hydraulic pump and the constant displacement hydraulic motor that are connected bidirectional variable between motor and the sprocket shaft group, hydraulic system transfers specified rate hydraulic motor by enclosed, the driven by motor hydraulic pump, rotate by the hydraulic pump drive hydraulic motor, drive the sprocket shaft group work of coal plough, it is workable that this driving mechanism is that the mechanical energy by motor is converted into the pressure of fluid, the hydraulic motor volume of this driving mechanism is little, in light weight, movement inertia is little, when frequent start-stop, big starting torque, need occasion and when counter-rotating of speed governing little to the influence of sprocket shaft group.

Description of drawings

Fig. 1 is the structural representation of the driving mechanism of the mining down-hole of the utility model fluid motor-driven coal plough.

The specific embodiment

As shown in Figure 1, the utility model fluid motor-driven is mining, and the down-hole coal plough comprises motor 1, sprocket shaft group 2, but the permanent power hydraulic pump 3 of bidirectional variable, fuel tank 4 and constant displacement hydraulic motor 5, hydraulic pump 3 is connected by the output shaft of yielding coupling with motor 1, first oil drain out of hydraulic pump 3, first oil return opening is respectively by oil inlet pipe 6, first oil return pipe 7 advances with hydraulic motor 5, oil drain out connects, be respectively equipped with first control valve 61 and second control valve 71 on the oil inlet pipe 6 and first oil return pipe 7, second oil return opening on the hydraulic pump 3 is communicated with the bottom of fuel tank 4 by second oil return pipe 8, second oil drain out of hydraulic pump 3 is communicated with first filter pump 10 by repairing pipe 9, first filter pump 10 is communicated with fuel tank 4, first filter pump 10 is provided with the 3rd control valve 101, the drain tap of hydraulic motor 5 is communicated with second filter pump 12 by drain mast 11, second filter pump 12 is communicated with fuel tank 4, second filter pump 12 is provided with the 4th control valve 121, and hydraulic motor 5 is connected with sprocket shaft group 2 by internal spline.

The utility model fluid motor-driven is mining down-hole coal plough is when sprocket shaft group 2 is just being changeed, first control valve 61 and second control valve 71 are opened, the 3rd control valve 101 and the 4th control valve 121 are closed, 3 work of motor 1 rotating band hydrodynamic press pump, hydraulic pump 3 is input to fluid in the hydraulic motor 5 by oil inlet pipe 8, can drive hydraulic motor 5 by oil liquid pressure rotates, hydraulic motor 5 drives sprocket shaft group 2 just to be changeed, and hydraulic motor 5 is got back to periodic duty in the hydraulic pump 3 by first oil return pipe 7 with fluid simultaneously.

When 2 counter-rotatings of sprocket shaft group, first control valve 61 and second control valve 71 are opened, the 3rd control valve 101 and the 4th control valve 121 are closed, 3 work of motor 1 rotating band hydrodynamic press pump, hydraulic pump 3 is input to fluid in the hydraulic motor 5 by first oil return pipe 7, can drive hydraulic motor 5 by oil liquid pressure and rotate, hydraulic motor 5 drives 2 counter-rotatings of sprocket shaft group, and hydraulic motor 5 is got back to periodic duty in the hydraulic pump 3 by oil inlet pipe 6 with fluid simultaneously.

When especially hydraulic pump 3 is discharged in speed change or start-stop process in the course of work shortage of oil, open the 3rd control valve 101, by first filter pump 10 extraction of the oil in the fuel tank 4 is delivered in the hydraulic pump 3 by repairing pipe 9, the oil that while first filter pump 10 will suck by the screen pack on it in the process of suction oil filters; When especially the oil in the hydraulic motor 5 too much need release in speed change or start-stop process in the course of work, open the 4th control valve 121, by second filter pump 12 oil unnecessary in the hydraulic motor 5 is extracted out, by drain mast 11 oil is transported in the fuel tank 4, the oil that while second filter pump 12 will suck by the screen pack on it in the process of suction oil filters.

But the utility model fluid motor-driven is mining down-hole coal plough is by at the permanent power hydraulic pump 3 and the constant displacement hydraulic motor 5 that are connected bidirectional variable between motor 1 and the sprocket shaft group 2, drive hydraulic pump 3 by motor 1, driving hydraulic motor 5 by hydraulic pump 3 rotates, drive sprocket shaft group 2 work of coal plough, this driving mechanism is that the pressure that the mechanical energy by motor 1 is converted into fluid can drive 2 work of sprocket shaft group, hydraulic motor 5 volumes of this driving mechanism are little, in light weight, movement inertia is little, when frequent start-stop, big starting torque, need occasion and when counter-rotating of speed governing little to the influence of sprocket shaft group 2.

The above embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineers and technicians in this area make the technical solution of the utility model all should fall in the definite protection domain of claims of the present utility model.

Claims (2)

1. the mining down-hole of fluid motor-driven coal plough, comprise motor (1) and sprocket shaft group (2), it is characterized in that: but also comprise permanent power hydraulic pump (3), fuel tank (4) and the constant displacement hydraulic motor (5) of bidirectional variable, described hydraulic pump (3) is connected by the output shaft of yielding coupling with motor (1), be interconnected by oil pipe line respectively between described hydraulic pump (3), fuel tank (4) and the hydraulic motor (5), described hydraulic motor (5) is connected with sprocket shaft group (2) by internal spline.

2. the mining down-hole of fluid motor-driven as claimed in claim 1 coal plough, it is characterized in that: first oil drain out of described hydraulic pump (3), first oil return opening is respectively by oil inlet pipe (6), first oil return pipe (7) advances with hydraulic motor (5), oil drain out connects, be respectively equipped with first control valve (61) and second control valve (71) on described oil inlet pipe (6) and first oil return pipe (7), second oil return opening on the described hydraulic pump (3) is communicated with the bottom of fuel tank (4) by second oil return pipe (8), second oil drain out of described hydraulic pump (3) is by repairing pipe (9) and first filter pump (10)) be communicated with, first filter pump (10)) is communicated with fuel tank (4), described first filter pump (10)) is provided with the 3rd control valve (101)), the drain tap of described hydraulic motor (5) is by drain mast (11)) with second filter pump (12)) be communicated with, described second filter pump (12)) be communicated with described second filter pump (12) with fuel tank (4)) be provided with the 4th control valve (121)).