CN220548210U - Pin shaft dismounting device and coal mining machine - Google Patents

Abstract

The utility model discloses a pin shaft dismounting device and a coal mining machine, which comprise a base and a supporting table arranged at the top of the base in a sliding manner, wherein an arc-shaped limiting groove is formed in the top of the supporting table, limiting plates are symmetrically hinged to the top of the supporting table, a hydraulic jack is arranged between the base and the supporting table, and a connecting rod assembly for driving the two limiting plates to open and close is movably arranged in the supporting table. According to the pin shaft dismounting device provided by the utility model, the base is moved to the lower part of the cutter head of the coal mining machine, then the large arm is swung to enable the cutter head to fall into the arc-shaped limiting groove formed in the top of the saddle, the cutter head is limited in the arc-shaped limiting groove, the saddle is pushed to slide on the base by utilizing the hydraulic jack, the cutter head is pushed to the saddle at the moment by rising of the saddle, the downward pressure of the cutter head to the pin shaft is further reduced, the cutter head is convenient to dismount, and the two limiting plates are driven to fold or open by the connecting rod assembly, so that the limitation of the cutter head is further enhanced or relieved.

Description

Pin shaft dismounting device and coal mining machine

Technical Field

The utility model relates to the technical field of coal mining machines, in particular to a pin shaft dismounting device and a coal mining machine.

Background

The coal mining machine is used as important mechanical equipment in coal mining, coal mine resources are rapidly mined through a rotary cutter head on the coal mining machine, and then the mined coal mine is transported to the ground by using a corresponding underground coal mine conveyor belt.

The pin shaft is used as a standardized fastener and is mainly used at the movable joint of two parts, such as the rotation joint of the big arm and the cutter head, the cutter head is arranged on the big arm through the rotation of the pin shaft, and then the cutter head and the big arm are separated through disassembling the pin shaft when the cutter head is maintained and replaced later.

At present, when the pin shaft at the joint of the big arm and the cutter head is detached, the bearing and the like arranged on the pin shaft are required to be detached firstly, and then the pin shaft is detached from the big arm and the cutter head by utilizing the swinging hammer, so that the cutter head is separated from the big arm. In the process of dismantling the pin shaft, the tool bit needs to be attached to the ground firstly, then the acting force of the tool bit on the pin shaft is reduced, however, the acting force on the pin shaft can be reduced through the mode of attaching the tool bit to the ground, but the tool bit is easy to slide after the pin shaft is detached generally, the tool bit is inconvenient to fix, and the pin shaft is not well regulated by the downward pressure of the tool bit.

Disclosure of Invention

The utility model aims to provide a pin shaft dismounting device and a coal mining machine, which are convenient for limiting and fixing a cutter head, and can lift the cutter head to adjust the downward pressure on a pin shaft.

In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a round pin axle dismounting device, includes base and slides the saddle that sets up in its top, arc spacing groove has been seted up at the top of saddle, the top symmetry of saddle articulates and is provided with the limiting plate, be provided with hydraulic jack between base and the saddle, the activity is provided with the link assembly that drives two limiting plates and open and shut in the saddle.

Preferably, the outer walls on two opposite sides of the base are respectively provided with auxiliary wheels in symmetrical axial rotation, and the base is symmetrically provided with grooves.

Preferably, the saddle is located arc spacing groove bilateral symmetry and has seted up the spout, slip respectively in the spout is provided with the slide, the top of slide articulates respectively and is provided with the connecting plate, the first end of connecting plate articulates respectively and sets up on the outer wall of limiting plate one side.

Preferably, the screw rod is axially and rotatably arranged in the saddle, the sliding plate is respectively in threaded rotation with the forward threads and the reverse threads arranged on the screw rod, and the screw rod is movably arranged in the slot.

Preferably, the outer wall of one side of the limiting plate is respectively provided with a ladder plate, and the top end array of the limiting plate is provided with a shielding column.

Preferably, the limiting plate is a steel plate.

Preferably, a hanging buckle part is arranged on the outer wall of one side of the base.

The coal mining machine comprises the pin shaft dismounting device.

In the technical scheme, the pin shaft dismounting device and the coal mining machine provided by the utility model have the following beneficial effects: through removing the below to the coal-winning machine tool bit with the base, then through the arc spacing inslot that the big arm of swing so that the tool bit whereabouts to the saddle top was offered, carry out spacingly to the tool bit through the arc spacing inslot, then when need the lifting tool bit in order to adjust the downforce to the round pin axle, slide on the base with the top saddle through utilizing hydraulic jack, rise in order to jack up the tool bit through the saddle this moment, and then through the bearing tool bit so that the downforce of reduction tool bit to the round pin axle on the tool bit is convenient for dismantle the tool bit, and fold or open with order to drive two limiting plates through link assembly, with further reinforcing spacing to the tool bit or release the spacing to the tool bit.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of an overall structure according to an embodiment of the present utility model;

fig. 2 is a schematic cross-sectional structure provided in an embodiment of the present utility model.

Reference numerals illustrate:

1. a base; 2. a support; 3. a slide plate; 4. a screw; 5. an auxiliary wheel; 6. a hydraulic jack; 7. a limiting plate; 11. a hanging buckle part; 12. slotting; 21. an arc-shaped limit groove; 22. a chute; 31. a connecting plate; 41. forward threads; 42. reverse threads; 71. a ladder plate; 72. and shielding the column.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

As shown in fig. 1-2, a pin shaft dismounting device and a coal mining machine comprise a base 1 and a supporting table 2 arranged at the top of the base in a sliding manner, wherein an arc-shaped limit groove 21 is formed in the top of the supporting table 2, limit plates 7 are symmetrically hinged to the top of the supporting table 2, a hydraulic jack 6 is arranged between the base 1 and the supporting table 2, and a connecting rod assembly for driving the two limit plates 7 to open and close is movably arranged in the supporting table 2. Through removing the below to the coal-winning machine tool bit with base 1, then through the big arm of swing so that the tool bit whereabouts in the arc spacing groove 21 that seting up at saddle 2 top, carry out spacingly to the tool bit in the arc spacing groove 21, then when need lifting tool bit in order to adjust the downforce to the round pin axle, slide on base 1 with the top of pushing away saddle 2 through utilizing hydraulic jack 6, rise in order to jack up the tool bit through saddle 2 this moment, and then through the bearing tool bit so that the downforce of reduction tool bit to the round pin axle on the tool bit is convenient for dismantle the tool bit, and fold or open with order to drive two limiting plates 7 through the link assembly, spacing to the tool bit is removed in spacing to the spacing of further reinforcing.

Specifically, the connecting rod assembly in the above technical scheme is used for driving the two limiting plates 7 to be folded or unfolded, and the way of driving the two limiting plates 7 to be folded or unfolded can be that the electric push rod pushes or pulls the two limiting plates 7, and can be that a motor is matched with a gear and a connecting rod; or the two limiting plates 7 can be closed or opened by a mode known to those skilled in the art.

As a further technical scheme provided by the utility model, the outer walls on two opposite sides of the base 1 are respectively provided with auxiliary wheels 5 in symmetrical axial rotation, and the base 1 is symmetrically provided with grooves 12.

Specifically, as shown in fig. 1, the auxiliary wheel 5 is utilized to adjust or carry the cutter head by moving the base 1 after the cutter head falls into the arc-shaped limit groove 21 and is separated from the large arm.

Further, the supporting platform 2 is located at two sides of the arc-shaped limiting groove 21 and symmetrically provided with sliding grooves 22, sliding plates 3 are respectively arranged in the sliding grooves 22 in a sliding mode, connecting plates 31 are respectively hinged to the tops of the sliding plates 3, and first ends of the connecting plates 31 are respectively hinged to the outer walls of one sides of the limiting plates 7.

Specifically, the two sliding plates 3 slide in the sliding grooves 22 respectively, and then the two sliding plates 3 are matched with the connecting plates 31 respectively to drive the two limiting plates 7 to be folded or unfolded.

Further, the screw 4 is axially rotatably disposed on the supporting platform 2, the sliding plate 3 is respectively in threaded rotation with the forward thread 41 and the reverse thread 42 disposed on the screw 4, and the screw 4 is movably disposed in the slot 12.

Specifically, the screw 4 is rotated to enable the two sliding plates 3 to be respectively in threaded rotation with the forward threads 41 and the reverse threads 42, at the moment, the sliding plates 3 are respectively close to each other or far away from each other, when the two sliding plates 3 are close to each other, the connecting plates 31 are matched to respectively pull the two limiting plates 7 to fold, and when the two sliding plates 3 are far away from each other, the connecting plates 31 are matched to respectively push the two limiting plates 7 to open to release the limit of the cutter head.

Furthermore, the outer walls of one side of the limiting plate 7 are respectively provided with a ladder plate 71, and the top end of the limiting plate 7 is provided with shielding columns 72 in an array.

Specifically, through rotating screw rod 4 so that two slide plates 3 respectively with forward screw 41 and reverse screw 42 screw thread rotate, slide plate 3 is close to each other or keep away from each other respectively this moment, and then can adjust two limiting plates 7 upset, through adjusting limiting plate 7 so that limiting plate 7 perpendicular to saddle 2's top, through stepping on ladder plate 71 so that better dismantlement tool bit is located parts such as epaxial corresponding bolt of round pin this moment, through the protruding on the error cutter head that hides post 72 with better, and then better contact tool bit both sides.

Further, the limiting plate 7 is a steel plate.

Further, the outer wall of one side of the base 1 is provided with a hanging buckle part 11.

Specifically, the hooking portion 11 is utilized to facilitate the subsequent movement of the tool bit on the pallet 2 by pulling the tool bit by the pulling device.

Working principle: through removing base 1 to the below of coal-winning machine tool bit, then through the big arm of swing so that the tool bit falls to the arc spacing groove 21 that seting up at saddle 2 top, carry out spacingly through the arc spacing groove 21 to the tool bit, then when the lower pressure to the round pin axle is in order to adjust to the lifting tool bit, slide on base 1 through pushing away saddle 2 with the jack 6 that utilizes, rise in order to jack up the tool bit through saddle 2 this moment, and then through the lower pressure that the bearing tool bit was used for reducing the tool bit to the round pin axle on the tool bit, thereby the tool bit is convenient for dismantle, rotate through rotating screw 4 so that two slide 3 respectively with forward screw 41 and reverse screw 42 screw thread, slide 3 are close to each other or keep away from each other this moment, when two slide 3 are close to each other, cooperation connecting plate 31 is in order to pull two limiting plates 7 respectively to fold this moment, and then when two slide 3 keep away from each other, cooperation connecting plate 31 opens with the top respectively and releases the spacing to the tool bit.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims (8)

1. The utility model provides a round pin axle dismounting device, its characterized in that, including base (1) and slip setting in saddle (2) at its top, arc spacing groove (21) have been seted up at the top of saddle (2), the top symmetry of saddle (2) articulates and is provided with limiting plate (7), be provided with hydraulic jack (6) between base (1) and saddle (2), the activity is provided with the link assembly that drives two limiting plate (7) to open and shut in saddle (2).

2. The pin shaft dismounting device according to claim 1, wherein the outer walls of the two opposite sides of the base (1) are respectively provided with auxiliary wheels (5) in symmetrical axial rotation, and the base (1) is symmetrically provided with grooves (12).

3. The pin shaft dismounting device according to claim 1, characterized in that sliding grooves (22) are symmetrically formed in two sides of the supporting table (2) located on the arc-shaped limiting grooves (21), sliding plates (3) are respectively arranged in the sliding grooves (22) in a sliding mode, connecting plates (31) are respectively hinged to the tops of the sliding plates (3), and first ends of the connecting plates (31) are respectively hinged to the outer wall on one side of the limiting plates (7).

4. A pin removal device according to claim 3, wherein the support (2) is rotatably provided with a screw (4) in an axial direction, the slide (3) is rotatably provided with a forward thread (41) and a reverse thread (42) provided on the screw (4), respectively, and the screw (4) is movably provided in the slot (12).

5. The pin shaft dismounting device according to claim 1, characterized in that the outer walls of one side of the limiting plate (7) are respectively provided with a ladder plate (71), and the top end array of the limiting plate (7) is provided with shielding columns (72).

6. A pin removal device according to claim 1, characterized in that the limiting plate (7) is a steel plate.

7. The pin dismounting device according to claim 1, characterized in that the outer wall of the base (1) side is provided with a hanging buckle part (11).

8. A shearer loader comprising a pin removal device as claimed in any one of claims 1 to 7.