CN210033425U - Rocker arm of coal mining machine - Google Patents

Abstract

The utility model provides a rocker arm of a coal mining machine, which comprises a rocker arm, wherein the rocker arm is of a hollow box girder structure, one arbitrary end of the rocker arm is hinged with the coal mining machine through a hinge lug, one end of the rocker arm, which is far away from the coal mining machine, is provided with a main shaft, and the main shaft is connected with a roller; the driver is arranged on the side part of one end of the rocker arm close to the hinge lug, and a driving shaft of the driver extends towards the inside of the rocker arm through a hole penetrating through the side wall of the rocker arm; and the transmission mechanism is arranged in the rocker arm, is connected between the driving shaft and the main shaft of the roller and is used for transmitting the power of the driver to drive the roller to rotate.

Description

Rocker arm of coal mining machine

Technical Field

The utility model relates to a coal-winning machine technical field, concretely relates to coal-winning machine rocking arm.

Background

The coal machine is a large-scale automatic coal mining device integrating machinery, electricity and hydraulic pressure, and is used for realizing coal seam mining operation. The coal mining operation is a high-dust environment, the situation that dust is clamped into a precision device is inevitably caused when the coal mining machine is in the high-dust environment for a long time, particularly a planet carrier of the coal mining machine, and after the dust enters the dust and lubricating oil in the planet carrier, gear meshing in the planet carrier is caused to be adhered, so that the normal operation of the coal mining machine is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coal-winning machine rocking arm through the complete totally closed mode inside the rocking arm with drive mechanism, prevents that the dust from constructing the influence to the transmission to the normal work of coal-winning machine rocking arm has been guaranteed.

In order to achieve the above object, the utility model provides a following technical scheme: a rocker arm of a coal mining machine mainly comprises a rocker arm, wherein the rocker arm is of a hollow box girder structure, any one end of the rocker arm is hinged with the coal mining machine through a hinge lug, a main shaft is arranged at one end of the rocker arm, which is far away from the coal mining machine, and the main shaft is connected with a roller; the driver is arranged on the side part of one end of the rocker arm close to the hinge lug, and a driving shaft of the driver extends towards the inside of the rocker arm through a hole penetrating through the side wall of the rocker arm; and the transmission mechanism is arranged in the rocker arm, is connected between the driving shaft and the main shaft of the roller and is used for transmitting the power of the driver to drive the roller to rotate.

Preferably, the transmission mechanism comprises a worm which is connected with and arranged on the driving shaft, the positioning bracket is arranged on a worm wheel inside the rocker arm, and the worm wheel is in transmission fit with the worm; the transmission shaft is coaxially connected with the turbine and extends to one end far away from the hinge lug along the length direction of the rocker arm; and one end of the transmission shaft, which is far away from the turbine, is connected with the main shaft through a reversing transmission mechanism.

Preferably, the reversing transmission mechanism comprises a driving sliding column coaxially connected with the transmission shaft and a driven sliding column coaxially connected with one end of the main shaft, which is positioned in the rocker arm, and the axes of the driving sliding column and the driven sliding column are perpendicular to each other; the driving sliding column and the driven sliding column are respectively provided with a plurality of circular channels penetrating through two ends along the axial direction; the device also comprises a corner shaft, wherein the axes at the two ends of the corner shaft are mutually vertical, and the two ends of the corner shaft are respectively inserted into the circular channels of the driving sliding column and the driven sliding column and are matched with the shaft holes of the circular channels; the oil seals are arranged at two ends of the circular channel, and the driving sliding column and the driven sliding column are located.

Preferably, a sliding shaft seat is coaxially nested in the circular channel and provided with an adjusting device, the sliding shaft seat comprises a sliding shaft hole, the adjusting device is arranged in the sliding shaft hole and comprises a reference seat arranged in the sliding shaft hole, a sliding film sheet arranged in one axial side of the reference seat and an adjusting component arranged on the other axial side of the reference seat, the reference seat comprises an arc-shaped part with a symmetrical shaft coinciding with the central shaft of the sliding shaft hole, an accommodating barrel, a blind hole arranged along the symmetrical shaft of the arc-shaped part and at least one clamp spring strip arranged on the inner side wall of the accommodating barrel, the sliding film sheet comprises an arc-shaped wear-resisting surface, a plug pin arranged on the opposite side of the arc-shaped wear-resisting surface and a plurality of mud discharge grooves arranged on the arc-shaped wear-resisting surface, the plug pin is inserted in the blind hole, the adjusting assembly comprises at least one elastic piece, a clamping disc and an adjusting piece, the elastic piece is sleeved on the plug pin and is accommodated in the accommodating barrel, the clamping disc is clamped on the clamp spring strip, the adjusting piece is arranged on the clamping disc, the clamping disc is in threaded connection with the adjusting piece and comprises at least one notch matched with the clamp spring strip, one end of the adjusting piece abuts against one side, opposite to the plug pin, of the blind hole, and an adjusting groove is formed in the other end of the adjusting piece.

Preferably, the sliding shaft seat further comprises a bearing hole, the axial direction of the bearing hole is perpendicular to the axial direction of the sliding shaft hole, and the central shaft of the bearing hole and the central hole of the sliding shaft hole are located on the same plane; the sliding piece is arranged in the bearing hole; on a cross section perpendicular to the bearing hole, contour lines of any two adjacent oil storage holes in the plurality of oil storage holes on the arc-shaped wear-resistant surface are overlapped; the arc-shaped part is provided with at least one limiting groove, and the sliding membrane piece comprises at least one axial limiting strip.

Preferably, the driver comprises a permanent magnet motor, a primary planetary gear reducer and a bevel gear universal coupling transmission system, wherein an input shaft of the primary planetary gear reducer is coaxially connected with an output shaft of the permanent magnet motor, and an output shaft of the primary planetary gear reducer is connected with the driving shaft through the bevel gear universal coupling transmission system; the one-level planetary gear reducer and the bevel gear universal coupling transmission system are both located in the cavity of the rocker arm, and the torque generated by the permanent magnet motor is driven by the one-level planetary gear reducer and the bevel gear universal coupling transmission system to drive the worm to rotate.

Preferably, the bevel gear universal coupling transmission system comprises a reverse gear, an outer axle center reduction gear, a direction changing gear shaft, an intermediate reduction gear shaft, a planet gear shaft, an output gear shaft, an inner axle center reduction gear and an output large gear; the reversing gear is in meshing transmission with the outer axial center reduction gear, the outer axial center reduction gear is in splined transmission with the change gear shaft, the planetary gear shaft, the middle reduction gear shaft and the output gear shaft form a pair of universal couplings, the inner axial center reduction gear is in splined transmission with the output gear shaft, the inner axial center reduction gear is in meshing transmission with the output gear wheel, and the change gear shaft 62 and the output gear shaft 65 are connected to the inner side wall of the rocker arm through bearing frames.

The utility model has the advantages that: through the arrangement, the coal cutter rocker arm is only provided with the holes at the connecting part of the driver and the main shaft part, and the holes at the two parts are both provided with the dustproof sleeve and the oil seal, so that the driving mechanism can work in a relatively sealed space, and the transmission mechanism is ensured not to be influenced by dust.

The worm gear and worm matching mode reduces the requirement on the tooth meshing gap in the straight tooth transmission, and dust adhered to the surfaces of the teeth is blocked on one side of the worm gear when contacting with the worm gear teeth in the rotating process of the worm gear, so that the dust cannot enter the meshing surface of the worm gear and the worm teeth.

The driving sliding column and the driven sliding column are driven through corner rotation, in the transmission process, the corner shafts revolve and rotate to move between the driving sliding column and the driven sliding column, and meanwhile, the corners of the corner shafts always keep moving in the same plane in the movement process, so that the corner shafts slide in a reciprocating mode in the circular channel.

The bearing hole is a through hole which penetrates through two sides of the sliding shaft seat and is used for penetrating the shaft, so that the bearing hole is matched with the shaft. The axial of bearing hole with the axial of sliding shaft hole is perpendicular and link up each other, and the center pin in this bearing hole with the centre bore in sliding shaft hole is located same plane, so as to do benefit to adjusting device is to wearing to establish the axle in the bearing hole carries out radial butt. The adjusting device is arranged in the sliding shaft hole and comprises a reference seat arranged in the sliding shaft hole, a sliding film piece arranged in one axial side of the reference seat, and an adjusting component arranged on the other axial side of the reference seat. The reference seat is used for assembling the sliding film piece and the adjusting component, and comprises an arc-shaped part, a containing barrel, a blind hole and at least one clamping spring strip, wherein the arc-shaped part is coincident with the central axis of the sliding shaft hole, the blind hole is formed in the arc-shaped part, and the clamping spring strip is arranged on the inner side wall of the containing barrel. The arc-shaped part is used for installing the sliding membrane. The sliding membrane is used for propping against the shaft and is circular, so the sliding membrane is arc-shaped, and the arc-shaped part has the same curvature as the sliding membrane in order to match the shape of the sliding membrane. The arc-shaped part is also provided with at least one limiting groove which is used for limiting the sliding membrane, and the specific limiting mode of the limiting groove is described in detail below. The accommodating barrel is used for accommodating the adjusting assembly, and therefore, the structure and the shape of the accommodating barrel should be the same as those of the adjusting assembly. The perforations are used to mount the slip sheet, which will be described below in conjunction with the slip sheet. The circlip strip is adapted to cooperate with the adjustment assembly to limit the movement of the adjustment assembly, which will also be described in more detail below. The number of the snap spring strips is set according to actual requirements, in the embodiment, the reference seat is provided with a plurality of snap spring strips which are arranged on the inner side wall of the accommodating cylinder at the same angle, and the number of the snap spring strips can be at least two or more. The seat of the adjusting seat is provided with two elastic washers which can be O-shaped rings, and the noise generated by the reference seat during reciprocating motion can be avoided.

The sliding film piece comprises an arc-shaped wear-resisting surface facing the shaft, a plug pin arranged on the opposite side of the arc-shaped wear-resisting surface, and a mud discharging groove arranged on the arc-shaped wear-resisting surface. The arc-shaped wear-resisting surface is used for abutting against the shaft, so the diameter of the arc-shaped wear-resisting surface is equivalent to that of the shaft, and the central angle of the arc-shaped wear-resisting surface on the section perpendicular to the bearing hole can be smaller than the degree for convenience of installation. The inserting pin is inserted into the through hole and extends out of the accommodating cylinder, so that a regulating sheet which is described below is used for supporting, and then the gap between the arc-shaped wear-resisting surface and the shaft is regulated, and the gap between the shaft and the sliding sheet is regulated. The arc-shaped wear-resistant surface can be provided with the sludge discharge groove and the oil storage hole. The inserting pins are inserted into the blind holes to fix the relative position of the sliding film and the reference seat. The extension direction of the sludge discharge groove is the same as that of the bearing hole or the shaft, so that the linear bearing system with adjustable pretightening force and gap elimination can be used in severe environments with dust and the like. The mud discharging groove is arranged in the axial direction of the arc-shaped wear-resisting surface in a penetrating mode, so that the mud discharging groove is not only favorable for strengthening the chip discharging function, but also favorable for cleaning. The oil reservoir is used for storing lubricating oil. On a cross section perpendicular to the bearing hole, the contour lines of any two adjacent oil storage holes in the plurality of oil storage holes on the arc-shaped wear-resisting surface are connected or overlapped, so that when the arc-shaped wear-resisting surface is in contact with the shaft, the shaft can be lubricated without leakage. The sliding membrane piece also comprises at least one limiting strip which is arranged on the same side as the inserting pin, and the limiting strip is coupled with the limiting groove, so that the sliding membrane piece can be positioned and can be prohibited from moving along the axial direction of the shaft, and the limiting effect is achieved.

The bevel gear universal coupling transmission system comprises a reverse gear, an outer axle center reduction gear, a turning gear shaft, an intermediate reduction gear shaft, a planet gear shaft, an output gear shaft, an inner axle center reduction gear and an output large gear; the reversing gear is in meshing transmission with the outer axial center reduction gear, the outer axial center reduction gear is in splined transmission with the change gear shaft, the planetary gear shaft, the middle reduction gear shaft and the output gear shaft form a pair of universal couplings, the inner axial center reduction gear is in splined transmission with the output gear shaft, the inner axial center reduction gear is in meshing transmission with the output gear wheel, and the change gear shaft and the output gear shaft are installed on the rocker arm shell through bearings.

And the permanent magnet motor output shaft and the sun gear of the primary planetary gear speed reducer, the tie bar output shaft of the primary planetary gear speed reducer and the rocker arm input shaft, the rocker arm input shaft and the bevel gear universal coupling transmission system, and the bevel gear universal coupling transmission system and the rocker arm output shaft are in transmission through spline connection. The output torque of the permanent magnet motor is reduced through a primary planetary gear reducer and a bevel gear universal coupling transmission system to increase the torque and change the axial direction of the torque, the large torque is transmitted to a rocker arm output shaft through an output large gear 67, and the rocker arm output shaft is connected with a roller through a roller connecting end cover to realize roller driving. The universal coupling transmission coal mining machine rocker arm device is characterized in that a bevel gear universal coupling transmission system of the universal coupling transmission coal mining machine rocker arm device adopts a pair of universal joints, the problems of high failure rate, low reliability, high noise energy consumption and the like of a transmission gear train caused by deformation of a rocker arm shell of an existing coal mining machine rocker arm can be solved, and the universal coupling transmission coal mining machine rocker arm device can be adapted to short-distance rocker arms, long rocker arms, straight rocker arms and.

Drawings

FIG. 1 is a schematic view of the overall layout of the present invention;

FIG. 2 is a schematic view of the reversing transmission mechanism of the present invention;

FIG. 3 is a schematic view of a portion of a bearing seat of a corner shaft according to the present invention;

fig. 4 is a partial schematic view of the driver and the one-stage planetary gear reducer of the present invention.

Detailed Description

The following detailed description will be made with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1, a rocker arm 1 of a coal mining machine mainly comprises a rocker arm 1, wherein the rocker arm 1 is of a hollow box girder structure, any one end of the rocker arm 1 is hinged with the coal mining machine through a hinge lug 6, one end of the rocker arm 1, which is far away from the coal mining machine, is provided with a main shaft 3, and the main shaft 3 is connected with a roller 4; the driver 2 is arranged on the side part of the rocker arm 1 close to one end of the hinge lug 6, and the driving shaft of the driver 2 extends towards the inside of the rocker arm 1 through a hole penetrating the side wall of the rocker arm 1; and the transmission mechanism 51 is arranged inside the rocker arm 1, is connected between the driving shaft and the spindle 3 of the roller 4, and is used for transmitting the power of the driver 2 to drive the roller 4 to rotate.

Through the arrangement, the coal mining machine rocker arm 1 is only provided with the holes at the connecting part of the driver 2 and the main shaft 3, and the holes at the two parts are both provided with the dustproof sleeve and the oil seal, so that the transmission mechanism can work in a relatively sealed space, and the transmission mechanism 51 is ensured not to be influenced by dust.

In a preferred embodiment, the transmission mechanism 51 comprises a worm 12 connected and arranged on the driving shaft, a positioning bracket 13 is arranged on a worm wheel 11 inside the rocker arm 1, and the worm wheel 11 is in matched transmission with the worm 12; the transmission shaft 14 is coaxially connected with the turbine 11, and the transmission shaft 14 extends to one end far away from the hinge lug 6 along the length direction of the rocker arm 1; one end of the transmission shaft 14, which is far away from the turbine 11, is connected with the main shaft 3 through a reversing transmission mechanism 15 and a transmission mechanism 5.

The matching mode of the worm wheel 11 and the worm 12 is adopted, the requirement on the tooth meshing clearance in the straight tooth transmission is reduced, and in the rotating process of the worm 12, dust adhered to the surfaces of the teeth is blocked on one side of the worm wheel 11 when contacting with the teeth of the worm wheel 11, so that the dust cannot enter the meshing surface of the teeth of the worm wheel 11 and the worm 12.

According to fig. 2, as a preferred embodiment, the reversing transmission mechanism 15 and the transmission mechanism 5 comprise a driving strut 20 coaxially connected with the transmission shaft 14 and a driven strut 21 coaxially connected with one end of the main shaft 3 positioned in the rocker arm 1, wherein the axes of the driving strut 20 and the driven strut 21 are arranged perpendicular to each other; the driving sliding column 20 and the driven sliding column 21 are both provided with a plurality of circular channels 23 penetrating through two ends along the axial direction; the device also comprises a corner shaft 22, wherein the axes of two ends of the corner shaft 22 are mutually perpendicular, and two ends of the corner shaft 22 are respectively inserted into the circular channels 23 of the driving sliding column 20 and the driven sliding column 21 and are matched with the shaft holes of the circular channels 23; and oil seals are arranged at two ends of the circular channel 23 of the driving sliding column 20 and the driven sliding column 21.

The driving strut 20 and the driven strut 21 are driven by corner rotation, in the driving process, the corner shafts 22 revolve and rotate to move between the driving strut 20 and the driven strut 21, and meanwhile, the corners of the corner shafts 22 always keep moving in the same plane in the moving process, so that the corner shafts 22 slide in a reciprocating manner in the circular channel 23.

According to fig. 3, as a preferred embodiment, a sliding axle seat 30 is coaxially nested in the circular channel 23, the sliding axle seat 30 is provided with an adjusting device, the sliding axle seat 30 comprises a sliding axle hole 31, the adjusting device is arranged in the sliding axle hole 31 and comprises a reference seat 32 arranged in the sliding axle hole 31, a sliding membrane 33 arranged in one axial side of the reference seat 32 and an adjusting component arranged on the other axial side of the reference seat 32, the reference seat 32 comprises an arc-shaped part with a symmetrical axis coinciding with the central axis of the sliding axle hole 31, a containing cylinder, a blind hole arranged along the symmetrical axis of the arc-shaped part and at least one clamping spring strip 34 arranged on the inner side wall of the containing cylinder, the sliding membrane 33 comprises an arc-shaped wear-resisting surface, a plugging pin 36 arranged on the opposite side of the arc-shaped wear-resisting surface, and the plug pin 36 is inserted in the blind hole, the adjusting component comprises at least one elastic piece sleeved on the plug pin 36 and accommodated in the accommodating barrel, a clamping disc clamped on the clamping spring strip 34 and an adjusting sheet 37 arranged on the clamping disc, the clamping disc is in threaded connection with the adjusting sheet 37 and comprises at least one notch matched with the clamping spring strip 34, one end of the adjusting sheet 37 abuts against one side of the blind hole opposite to the plug pin 36, and the other end of the adjusting sheet 37 is provided with an adjusting groove 38.

The bearing hole 40 is a through hole penetrating through both sides of the pulley seat 30 and is used for penetrating the shaft, so that the bearing hole 40 is matched with the shaft. The axial direction of the bearing hole 40 is perpendicular to the axial direction of the sliding shaft hole 31 and communicated with the sliding shaft hole 31, and the central shaft of the bearing hole 40 and the central hole of the sliding shaft hole 31 are located on the same plane, so that the adjusting device can be used for radially abutting against a shaft penetrating in the bearing hole 40. The adjusting device is disposed in the slide shaft hole 31 and includes a reference seat 32 disposed in the slide shaft hole 31, a slide sheet 33 disposed in one axial side of the reference seat 32, and an adjusting member disposed in the other axial side of the reference seat 32. The reference seat 32 is used for assembling the sliding diaphragm 33 and the adjusting component, and includes an arc-shaped portion with a symmetry axis coinciding with a central axis of the sliding shaft hole 31, an accommodating cylinder, a blind hole formed along the symmetry axis of the arc-shaped portion, and at least one snap spring strip 34 arranged on an inner side wall of the accommodating cylinder. The arc-shaped portion is used for mounting the diaphragm 33. Since the sliding membrane 33 is used to support against the shaft and is circular, the sliding membrane 33 is arc-shaped, and therefore, in order to match the shape of the sliding membrane 33, the arc-shaped part has the same curvature as the sliding membrane 33. The arc-shaped portion is further provided with at least one limiting groove for limiting the sliding membrane 33, and the specific limiting manner will be described in detail below. The accommodating barrel is used for accommodating the adjusting assembly, and therefore, the structure and the shape of the accommodating barrel should be the same as those of the adjusting assembly. The perforations are used to mount the iris 33, which will be described below in conjunction with the iris 33. The circlip 34 is adapted to cooperate with the adjustment assembly to limit the movement of the adjustment assembly, as will also be described in more detail below. The number of the snap spring strips 34 is set according to actual requirements, in this embodiment, the reference seat 32 has a plurality of snap spring strips 34 arranged on the inner side wall of the accommodating cylinder at the same angle, and the number of the snap spring strips may be at least two or more. The seat of the adjusting device has two elastic washers, which may be O-rings, which prevent the reference seat 32 from generating noise during the reciprocating movement.

As a preferred embodiment, the pulley seat 30 further includes a bearing hole 40, an axial direction of the bearing hole 40 is perpendicular to an axial direction of the pulley hole 31, and a central axis of the bearing hole 40 and a central hole of the pulley hole 31 are located on the same plane; the sliding piece structure further comprises two sliding pieces 41 which are respectively arranged at two sides of the sliding shaft hole 31, wherein the sliding pieces 41 are arranged in the bearing hole 40; on a cross section perpendicular to the bearing hole 40, contour lines of any two adjacent oil storage holes 42 in the plurality of oil storage holes 42 on the arc-shaped wear-resisting surface are overlapped; the arc-shaped part is provided with at least one limiting groove, and the sliding diaphragm 33 comprises at least one axial limiting strip 43.

The sliding diaphragm 33 includes an arc-shaped wear-resistant surface facing the shaft, an insertion pin 36 disposed on the opposite side of the arc-shaped wear-resistant surface, and a sludge discharge groove 35 disposed on the arc-shaped wear-resistant surface. The arc-shaped wear-resistant surface is used for abutting against the shaft, so the diameter of the arc-shaped wear-resistant surface is equivalent to that of the shaft, and the central angle of the arc-shaped wear-resistant surface can be smaller than degrees on the cross section perpendicular to the bearing hole 40 for the convenience of installation. The plug pins 36 are inserted into the through holes and extend out of the accommodating cylinder to facilitate the supporting of a regulating plate 37 described below, so as to regulate the gap between the arc-shaped wear-resistant surface and the shaft, and thus the gap between the shaft and the sliding plate 41. The arc-shaped wear-resisting surface can be provided with the sludge discharge groove 35 and the oil storage hole 42. The insertion pin 36 is inserted into the blind hole to fix the relative position of the sliding sheet 33 and the reference seat 32. The extension direction of the sludge discharge groove 35 should be the same as the extension direction of the bearing hole 40 or the shaft, which makes the adjustable pretension and backlash linear bearing system applicable in severe environments with dust and the like. The mud discharging groove 35 should penetrate through the axial direction of the arc-shaped wear-resisting surface, so that the mud discharging groove is not only favorable for strengthening the chip discharging function, but also favorable for cleaning. The oil storage hole 42 is used for storing lubricating oil. In a cross section perpendicular to the bearing hole 40, the contour lines of any two adjacent oil storage holes 42 in the plurality of oil storage holes 42 on the arc-shaped wear-resisting surface are connected, so that when the arc-shaped wear-resisting surface is in contact with the shaft, the shaft can be lubricated without leakage. The sliding membrane 33 further comprises at least one limiting strip 43 on the same side as the plug pin 36, and the limiting strip 43 is coupled with the limiting groove, so that the sliding membrane 33 can be positioned, and the axial movement of the sliding membrane 33 along the shaft can be inhibited, thereby achieving the limiting function.

According to fig. 4, as a preferred embodiment, the driver 2 comprises a permanent magnet motor 50, a primary planetary gear reducer and a bevel gear universal coupling transmission system, wherein an input shaft of the primary planetary gear reducer is coaxially connected with an output shaft of the permanent magnet motor 50, and an output shaft of the primary planetary gear reducer is connected with a driving shaft through the bevel gear universal coupling transmission system; the first-stage planetary gear reducer and the bevel gear universal coupling transmission system are both located in the cavity of the rocker arm 1, and the torque generated by the permanent magnet motor 50 drives the worm 12 to rotate through the first-stage planetary gear reducer and the bevel gear universal coupling transmission system.

The reversing gear 66 is in meshing transmission with the outer axial reduction gear 61, the outer axial reduction gear 61 is in splined transmission with the change gear shaft 62, the planet gear shaft 64, the middle reduction gear shaft 63 and the output gear shaft 65 form a pair of universal couplings, the inner axial reduction gear 60 is in splined transmission with the output gear shaft 65, the inner axial reduction gear 60 is in meshing transmission with the output large gear 67, and the change gear shaft 62 and the output gear shaft 65 are connected to the inner side wall of the rocker arm 1 through a bearing bracket.

And the output shaft of the permanent magnet motor 50 and the sun gear of the primary planetary gear speed reducer, the output shaft of the tie bar of the primary planetary gear speed reducer and the input shaft of the rocker arm 1, the input shaft of the rocker arm 1 and the bevel gear universal coupling transmission system, and the bevel gear universal coupling transmission system and the output shaft of the rocker arm 1 are in spline connection transmission. The output torque of the permanent magnet motor 50 is reduced through a primary planetary gear reducer and a bevel gear universal coupling transmission system to increase the torque and change the axial direction of the torque, the large torque is transmitted to the output shaft of the rocker arm 1 through the output large gear 67, the output shaft of the rocker arm 1 is connected with the roller 4 through the roller 4 connecting end cover, and the driving of the roller 4 is realized. The universal coupling transmission coal mining machine rocker arm 1 device is characterized in that a bevel gear universal coupling transmission system of the universal coupling transmission coal mining machine rocker arm 1 device adopts a pair of universal joints, the problems of high failure rate of a transmission gear train, low reliability, high noise energy consumption and the like caused by the deformation of a shell of the rocker arm 1 of the existing coal mining machine rocker arm 1 can be solved, and the universal coupling transmission coal mining machine rocker arm 1 device can be adapted to a short-distance rocker arm 1, a long rocker arm 1.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (7)

1. A shearer rocker arm, comprising:

the rocker arm is of a hollow box girder structure, one arbitrary end of the rocker arm is hinged with the coal mining machine through a hinge lug, one end of the rocker arm, which is far away from the coal mining machine, is provided with a main shaft, and the main shaft is connected with a roller;

the driver is arranged on the side part of one end of the rocker arm close to the hinge lug, and a driving shaft of the driver extends towards the inside of the rocker arm through a hole penetrating through the side wall of the rocker arm;

and the transmission mechanism is arranged in the rocker arm, is connected between the driving shaft and the main shaft of the roller and is used for transmitting the power of the driver to drive the roller to rotate.

2. The shearer rocker arm according to claim 1, wherein the transmission mechanism comprises a worm connected to and disposed on the drive shaft, and a worm wheel mounted on the rocker arm and engaged with the worm for transmission; the transmission shaft is coaxially connected with the turbine and extends to one end far away from the hinge lug along the length direction of the rocker arm; and one end of the transmission shaft, which is far away from the turbine, is connected with the main shaft through a reversing transmission mechanism.

3. The shearer rocker arm according to claim 2, wherein the reversing transmission mechanism comprises a driving sliding column coaxially connected with the transmission shaft and a driven sliding column coaxially connected with one end of the main shaft, which is positioned inside the rocker arm, and the axes of the driving sliding column and the driven sliding column are perpendicular to each other; the driving sliding column and the driven sliding column are respectively provided with a plurality of circular channels penetrating through two ends along the axial direction; the device also comprises a corner shaft, wherein the axes at the two ends of the corner shaft are mutually vertical, and the two ends of the corner shaft are respectively inserted into the circular channels of the driving sliding column and the driven sliding column and are matched with the shaft holes of the circular channels; the oil seals are arranged at two ends of the circular channel, and the driving sliding column and the driven sliding column are located.

4. The shearer rocker arm according to claim 3, wherein a sliding shaft seat is coaxially nested in the circular channel, the sliding shaft seat is provided with an adjusting device, the sliding shaft seat comprises a sliding shaft hole, the adjusting device is arranged in the sliding shaft hole and comprises a reference seat arranged in the sliding shaft hole, a sliding film sheet arranged in one axial side of the reference seat and an adjusting component arranged on the other axial side of the reference seat, the reference seat comprises an arc-shaped part with a symmetry axis coinciding with a central axis of the sliding shaft hole, a containing barrel, a blind hole arranged along the symmetry axis of the arc-shaped part and at least one clamping spring strip arranged on the inner side wall of the containing barrel, the sliding film sheet comprises an arc-shaped wear-resisting surface and a splicing pin arranged on the opposite side of the arc-shaped wear-resisting surface, and the adjusting component comprises at least one elastic piece sleeved on the inserting pin and accommodated in the accommodating cylinder, a clamping disc clamped on the snap spring strip, and an adjusting piece arranged on the clamping disc, the clamping disc is in threaded connection with the adjusting piece and comprises at least one notch matched with the snap spring strip, one end of the adjusting piece abuts against one side of the blind hole opposite to the inserting pin, and the other end of the adjusting piece is provided with an adjusting groove.

5. The shearer rocker arm as claimed in claim 4, wherein the sliding shaft seat further comprises a bearing hole, the axial direction of the bearing hole is perpendicular to the axial direction of the sliding shaft hole, and the central axis of the bearing hole and the central hole of the sliding shaft hole are located on the same plane; the sliding piece is arranged in the bearing hole; on the section perpendicular to the bearing hole, the contour lines of any two adjacent oil storage holes in the plurality of oil storage holes on the arc-shaped wear-resistant surface are overlapped; the arc-shaped part is provided with at least one limiting groove, and the sliding membrane piece comprises at least one axial limiting strip.

6. The coal mining machine rocker arm according to claim 2, wherein the driver comprises a permanent magnet motor, a primary planetary gear reducer and a bevel gear universal coupling transmission system, an input shaft of the primary planetary gear reducer is coaxially connected with an output shaft of the permanent magnet motor, and an output shaft of the primary planetary gear reducer is connected with a driving shaft through the bevel gear universal coupling transmission system; the one-level planetary gear reducer and the bevel gear universal coupling transmission system are both located in the cavity of the rocker arm, and the torque generated by the permanent magnet motor is driven by the one-level planetary gear reducer and the bevel gear universal coupling transmission system to drive the worm to rotate.

7. The shearer rocker arm of claim 6, wherein the bevel gear universal coupling transmission system comprises a reverse gear, an outer axial reduction gear, a direction change gear shaft, an intermediate reduction gear shaft, a planetary gear shaft, an output gear shaft, an inner axial reduction gear and an output bull gear; the reversing gear is in meshing transmission with the outer axial center reduction gear, the outer axial center reduction gear is in splined transmission with the change gear shaft, the planetary gear shaft, the middle reduction gear shaft and the output gear shaft form a pair of universal couplings, the inner axial center reduction gear is in splined transmission with the output gear shaft, the inner axial center reduction gear is in meshing transmission with the output gear wheel, and the change gear shaft and the output gear shaft are connected to the inner side wall of the rocker arm through a bearing frame.

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