CN212706545U

CN212706545U - Coal-winning machine rack rail wheel round pin axle dismounting device

Info

Publication number: CN212706545U
Application number: CN202021561569.2U
Authority: CN
Inventors: 马红涛; 鱼朋
Original assignee: Shaanxi Coal Mining Hancheng Mining Co Ltd
Current assignee: Shaanxi Coal Mining Hancheng Mining Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-03-16
Anticipated expiration: 2030-07-31

Abstract

The utility model discloses a coal mining machine rack rail wheel pin shaft dismounting device, which comprises a lead screw, wherein the front end of the lead screw is fixed in a threaded hole of a rack rail wheel pin shaft to be dismounted, and the rear end of the lead screw is positioned outside a shaft cover; the fixing tool is fixedly arranged outside the shaft cover and is provided with a dismounting threaded hole, and the dismounting threaded hole is used for a lead screw to pass through; the hydraulic nut is arranged at the rear end of the screw rod; the manual pump is matched with the hydraulic nut and drives the gear rail wheel pin shaft to be disassembled to move outwards through the lead screw, so that the gear rail wheel pin shaft to be disassembled is disassembled; the utility model discloses an installing the lead screw in waiting to dismantle rack wheel round pin axle, it is fixed through fixed frock again in the outer end of lead screw, drive the lead screw through hydraulic bolt at last and rotate, and then realize the dismantlement of rack wheel round pin axle, the device simple structure easy to use, and operating space is little, no longer need obtain operating space through dismantling other machinery.

Description

Coal-winning machine rack rail wheel round pin axle dismounting device

Technical Field

The utility model belongs to the technical field of coal-winning machine auxiliary assembly, especially, relate to a coal-winning machine rack rail wheel round pin axle dismounting device.

Background

A coal mining machine is one of main devices of fully mechanized mining complete equipment. The coal mining machine is a large complex system integrating machinery, electricity and hydraulic pressure, the working environment is severe, and if a fault occurs, the whole coal mining work is interrupted, so that huge economic loss is caused. The coal cutter breaks down the coal from the coal body (coal breaking) and loads the coal into a working face conveyor (coal charging), and the coal cutter moves (pulls) at a set pulling speed, so that the working procedures of coal breaking and coal charging can be continuously carried out.

The transmission mode of the gear teeth of the rack and rail wheel of the walking part of the coal mining machine and the pin row is non-conjugate meshing transmission, if the torque of the transmission part does not change, along with the change of a meshing point, the stress condition of the meshing point of the gear teeth of the rack and rail wheel also changes, when the force borne by the gear teeth exceeds the material strength when the gear teeth are subjected to larger impact load or other factors, and the guide sliding shoes do not play a role in protecting the rack and rail wheel in the instant process, so that the gear teeth can be broken.

Therefore, the rack wheel is used as a wearing part and needs to be replaced frequently. When the rack wheel is replaced, the rack wheel and the pin shaft are in interference fit, the pin shaft needs to be detached first and then the rack wheel needs to be detached, and a throwing hammer is used for throwing the pin shaft out in a common method. However, under the influence of conditions, when the swinging hammer is used, the swinging hammer is used only in a condition after the chute cable frame and the chute are detached, so that the replacement of the toothed rail wheel is time-consuming and labor-consuming, and the coal mining efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a coal-winning machine rack rail wheel round pin axle dismounting device, the device is small, and easy operation can accomplish the dismantlement of rack rail wheel round pin axle in current working space. .

The utility model adopts the following technical scheme: a coal-winning machine rack rail wheel round pin axle dismounting device includes:

the front end of the screw rod is fixed in a threaded hole of the gear rail wheel pin shaft to be disassembled, and the rear end of the screw rod is positioned outside the shaft cover;

the fixing tool is fixedly arranged outside the shaft cover and is provided with a dismounting threaded hole, and the dismounting threaded hole is used for a lead screw to pass through;

the hydraulic nut is arranged at the rear end of the screw rod; and

and the manual pump is used for being matched with the hydraulic nut, and driving the rack wheel pin shaft to be disassembled to move outwards through the lead screw, so that the rack wheel pin shaft to be disassembled is disassembled.

Further, fixed frock includes bottom plate and curb plate, and the bottom plate is the plectane, and the curb plate is cyclic annular board, plectane and the one end fixed connection of cyclic annular board, has seted up fixed screw hole and dismantlement screw hole on the plectane respectively.

Further, the fixing tool is integrally formed in a punching mode.

Further, the disassembling threaded hole and the circular plate are concentric.

Furthermore, the fixed threaded holes are 2 and are symmetrically arranged relative to the dismounting threaded holes.

Further, the diameter of the dismounting threaded hole is larger than that of the fixing threaded hole.

The utility model has the advantages that: the utility model discloses an installing the lead screw in waiting to dismantle rack wheel round pin axle, it is fixed through fixed frock again in the outer end of lead screw, drive the lead screw through hydraulic bolt at last and rotate, and then realize the dismantlement of rack wheel round pin axle, the device simple structure easy to use, and operating space is little, no longer need obtain operating space through dismantling other machinery.

Drawings

Fig. 1 is a schematic structural view of a fixing tool in an embodiment of the present invention;

fig. 2 is a schematic structural view of another view angle of the fixing tool in the embodiment of the present invention;

fig. 3 is a use state diagram of the coal mining machine rack wheel dismounting device of the embodiment of the present invention.

Wherein: 1. a pin shaft; 2. a lead screw; 3. a shaft cover; 4. fixing the tool; 5. fixing the bolt; 6. a hydraulic nut;

41. fixing the threaded hole; 42. and disassembling the threaded hole.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The utility model discloses a coal mining machine rack rail wheel pin shaft dismounting device, which comprises a lead screw 2, wherein the front end of the lead screw is fixedly arranged in a threaded hole of a rack rail wheel pin shaft 1 to be dismounted, and the rear end of the lead screw is positioned outside a shaft cover 3; the fixing tool 4 is fixedly arranged outside the shaft cover 3 and is provided with a dismounting threaded hole 42, and the dismounting threaded hole 42 is used for the lead screw 2 to pass through; the hydraulic nut 6 is arranged at the rear end of the screw rod 2; and the manual pump is used for being matched with the hydraulic nut 6, and driving the rack wheel pin shaft to be disassembled to move outwards through the lead screw 2, so that the disassembly of the rack wheel pin shaft to be disassembled is realized.

The utility model discloses an installing the lead screw in waiting to dismantle rack wheel round pin axle, it is fixed through fixed frock again in the outer end of lead screw, drive the lead screw through hydraulic bolt at last and rotate, and then realize the dismantlement of rack wheel round pin axle, the device simple structure easy to use, and operating space is little, no longer need obtain operating space through dismantling other machinery.

This embodiment greatly reduced the degree of difficulty of operation through using hydraulic nut 6. The specific using method comprises the following steps:

fix lead screw 2 in round pin axle 1, will fix frock 4 and adorn on lead screw 2, will fix it to the shaft cover 3 through fixing bolt. At this time, only the rear end of the lead screw 2 is exposed to the outside. Before use, the manual pump is filled with hydraulic oil. When in pressurization, the handle above the pump is pressed up and down, and the handle of the unloading switch on the right side of the pump is locked clockwise; when the pressure is relieved, the handle is rotated anticlockwise. The left side connects with a pressure gauge, the pressure indication can be observed when the pressure is applied, and the front end of the manual pump is connected with an oil injection rubber tube.

Specifically, the hydraulic nut 6 is composed of a nut body, a pressure ring, an oil filling port and an oil discharging and air exhausting joint, and the appearance of the nut is cleaned when the hydraulic nut is used. The nut is screwed into a workpiece and locks the nut, the pressing ring is arranged at an original position, then an oil filling rubber pipe interface of the manual pump is inserted into an oil filling port, an unloading switch handle on the right side of the manual pump is locked to slowly pressurize, meanwhile, an air discharging cap on the upper portion of the oil discharging exhaust joint is screwed inwards to discharge air until air in the nut is completely discharged, clean hydraulic oil flows out, then the air discharging cap is unscrewed outwards to close a check valve, oil injection is continuously performed through pressurization, the pressing ring is extruded outwards, and the purpose of pressing is achieved until the purpose of pressing is achieved. The unloading switch handle is loosened, and the pressurizing rubber pipe joint of the manual pump is loosened. The oil discharge and exhaust joint is rotated inwards by loosening the nut until the hydraulic oil flows out, and then the nut is loosened slowly.

It should be noted that before the nut is not screwed into a workpiece and locked, the nut is not required to be pressurized to prevent the compression ring from deviating and dropping, and when the nut is not used, oil in the nut is required to be completely discharged, and the compression ring returns to the original position for the next use.

The utility model discloses an in one embodiment, fixed frock 4 includes bottom plate and curb plate, and the bottom plate is the plectane, and the curb plate is cyclic annular board, and the plectane is connected with the one end fixed connection of cyclic annular board, has seted up fixed screw hole 41 and dismantlement screw hole 42 on the plectane respectively.

More specifically, in order to increase the strength of the fixing tool 4, the fixing tool is integrally formed by punching. The dismounting threaded hole 42 and the circular plate are concentric, so that the stress balance of each part of the fixed tool 4 can be ensured, and the service life of the tool is prolonged. In order to ensure the stress balance of the fixing tool 4, the number of the fixing threaded holes 41 is 2, the fixing threaded holes are symmetrically arranged relative to the dismounting threaded hole 42, and when the fixing tool is stressed, the stress of the fixing bolts at the two ends is balanced, so that the stable working state is ensured. In addition, in the present embodiment, the diameter of the removal screw hole 42 is larger than the diameter of the fixing screw hole 41. Thereby increasing the bearing capacity of the circular plate.

Claims

1. The utility model provides a coal-winning machine rack rail wheel round pin axle dismounting device which characterized in that includes:

the front end of the screw rod (2) is fixedly arranged in a threaded hole of the gear rail wheel pin shaft (1) to be disassembled, and the rear end of the screw rod is positioned outside the shaft cover (3);

the fixing tool (4) is fixedly arranged outside the shaft cover (3) and is provided with a dismounting threaded hole (42), and the dismounting threaded hole (42) is used for the lead screw (2) to pass through;

the hydraulic nut (6) is arranged at the rear end of the lead screw (2); and

and the manual pump is used for being matched with the hydraulic nut (6) and driving the rack wheel pin shaft to be disassembled to move outwards through the lead screw (2), so that the rack wheel pin shaft to be disassembled is disassembled.

2. The dismounting device for the pin shaft of the gear rack wheel of the coal mining machine as claimed in claim 1, characterized in that the fixing tool (4) comprises a bottom plate and a side plate, the bottom plate is a circular plate, the side plate is an annular plate, the circular plate is fixedly connected with one end of the annular plate, and the circular plate is respectively provided with a fixing threaded hole (41) and a dismounting threaded hole (42).

3. The dismounting device for the pin shaft of the gear rack wheel of the coal mining machine as claimed in claim 1 or 2, characterized in that the fixing tool (4) is integrally formed by punching.

4. The shearer rack wheel pin shaft dismounting device as set forth in claim 2, characterized in that the dismounting threaded hole (42) is concentric with the circular plate.

5. The shearer rack wheel pin shaft dismounting device as set forth in claim 2 or 4, characterized in that the fixing threaded holes (41) are 2 and are symmetrically arranged with respect to the dismounting threaded hole (42).

6. The shearer rack wheel pin shaft dismounting device as set forth in claim 5, characterized in that the dismounting threaded hole (42) has a diameter larger than that of the fixing threaded hole (41).