CN212774282U - Extremely-thin coal seam coal mining machine traveling system and mounting structure thereof - Google Patents

Abstract

The utility model relates to a very thin coal seam coal-winning machine traveling system and mounting structure thereof, traveling system includes the walking case casing, the integral type drive wheel, the walking wheel subassembly, walking shaft and direction piston shoes, the shaft rotation of walking shaft and integral type drive wheel supports on the lateral wall around the walking case casing, gear wheel and the coaxial fixed connection of walking wheel in the walking wheel subassembly, walking wheel coaxial arrangement is epaxial at the walking wheel, gear wheel and drive wheel external toothing, each department's sunken surface about being equipped with on the direction piston shoes, the drive wheel axis is close to sunken surface and arranges, utilize the screw, walking case connection interface structure on screw block and the fuselage rear side wall cooperatees and to dismantle fixed walking case casing, and adapt to a plurality of different angle installations of walking case casing. The utility model discloses can reduce the difference in height between coal-winning machine traveling system's driving wheel axle and walking wheel axle, make the thin or extremely thin coal seam coal-winning machine of high-power low mining height obtain bigger cross coal altitude under the condition of equal machine face height.

Description

Extremely-thin coal seam coal mining machine traveling system and mounting structure thereof

Technical Field

The utility model relates to a coal-winning machine traveling system, especially thin or extremely thin coal seam coal-winning machine traveling system are applicable to the high-power coal-winning machine of short fuselage of thin or extremely thin coal seam exploitation.

Background

For mining of thin or extremely thin coal seams, the thin or extremely thin coal seam mining machine requires a machine body to be shorter and shorter, but on the other hand, in order to adapt to mining of complex geological conditions such as coexistence of coal and rock, the power of the machine needs to be larger, the sizes of a motor, a transmission system and the like are correspondingly increased along with the increase of the power, and the requirement of the machine body to be shorter and shorter becomes a pair of contradictions, so the structural design of the thin or extremely thin coal seam mining machine is a difficulty. One of the outstanding problems is that the coal passing height below the machine body and above the scraper conveyor is small, and when large coal blocks, gangue and the like are encountered, the chain jamming of the scraper conveyor, the resistance of the coal mining machine is greatly increased, the effective traction force is insufficient and the like.

The technical scheme that large and medium-sized parts such as motors, transmission gears and the like are moved forwards from the upper part of an original scraper conveyor to the side close to the coal wall is proposed and gradually used in the industry, namely, the arrangement problem of the large and medium-sized parts is solved by adopting a mode of suspending a machine body, the mode is favorable for reducing the height of the machine body, but the problem that the height of the coal passing is smaller cannot be solved generally.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an adjustment method of extremely thin coal seam coal-winning machine traveling system and mounting structure and fuselage high position thereof enables the thin or extremely thin coal seam coal-winning machine of high-power low mining height to obtain bigger cross coal height under the condition of equal machine face height.

The utility model discloses a main technical scheme has:

a traveling system of a coal mining machine for extremely thin coal seams comprises a traveling box shell, a driving wheel shaft, a traveling wheel assembly, a traveling wheel shaft and a guide sliding shoe, wherein the traveling wheel shaft and the driving wheel shaft are rotatably supported on the front side wall and the rear side wall of the traveling box shell through bearings, a large gear and a traveling wheel in the traveling wheel assembly are coaxially and fixedly connected, the traveling wheel is coaxially installed on the traveling wheel shaft, the driving wheel is coaxially fixed on the driving wheel shaft, the large gear is externally meshed with the driving wheel, the guide sliding shoe comprises a base and a lug seat positioned in the middle of the left and right direction above the base, the base comprises a front side wall, a rear side wall and a top plate connected between the tops of the front side wall and the rear side wall, barbs are arranged at the bottoms of the front side wall or the rear side wall, and guide grooves extending left and right are respectively defined by the, the surface of the guide groove is provided with a wear-resistant layer, the guide slipper is installed on the lower portion of the walking box shell, the guide slipper is connected with the walking box shell in a swinging mode through an ear hole in an ear seat of the guide slipper, the axis of the walking wheel shaft is overlapped with the center line of the ear hole, a left concave surface and a right concave surface which are concave towards the inside of the base are respectively arranged on the guide slipper, the concave surfaces are located on at least one of the left side surface and the right side surface of the ear seat, the left top surface and the right top surface of the base, which are separated by the ear seat, and the transition connection positions of the left side surface and the right side surface of the ear seat and the top surface of the base, the driving wheel shaft is arranged close to the concave surfaces in the radial direction, and the driving wheel shaft is located between the.

Continuous structure about preceding lateral wall and the back lateral wall of base are, the ear seat is ears ear seat, including preceding ear seat and back ear seat, preceding ear seat and back ear seat are connected respectively the inboard of the preceding lateral wall of walking case casing and back lateral wall, work as the barb is connected during the preceding lateral wall of base, the gear wheel is arranged in the front side of walking the wheel, works as the barb is connected during the back lateral wall of base, the gear wheel is arranged in the rear side of walking the wheel.

The utility model discloses a walking case, including base, preceding lateral wall, barb, front ear seat, walking case casing, the preceding lateral wall of base is continuous structure about for, the rear wall of base is left right direction middle part disconnection structure, the ear seat only has preceding ear seat, the top of preceding ear seat is equipped with the backup pad that stretches to the back overhang, the barb is connected the preceding lateral wall of base, preceding ear seat is connected the inboard of the preceding lateral wall of walking case casing, the gear wheel is arranged the front side of walking wheel.

The rear side wall of base is for controlling continuous structure, the preceding lateral wall of base is left right direction middle part disconnection structure, the ear seat only has the rear ear seat, the top of rear ear seat is equipped with the backup pad that stretches by overhang forward, the barb is connected the rear side wall of base, the rear ear seat is connected the inboard of the rear side wall of walking case casing, the rear side of walking wheel is arranged to the gear wheel.

The traveling case shell can comprise a connecting plate, a transition seat, a retainer ring and a gland, wherein the connecting plate and the gland are fixedly connected and enclosed into a case structure with three closed front, back and upper surfaces, the driving wheel shaft is rotatably supported on the connecting plate and the gland through a bearing, the retainer ring is sleeved on the driving wheel shaft and is fixed on the connecting plate from the inner side of the traveling case shell to axially limit the front end bearing, the transition seat is fixed on the connecting plate from the inner side of the traveling case shell, the front end and the back end of the traveling wheel shaft are respectively rotatably supported on the transition seat and the gland through the bearing, when the front lug seat related to the guide sliding shoe is connected with the traveling case shell, the transition seat is provided with a front shaft section which is overhung towards the inner side of the traveling case shell, the front shaft section is matched with a front lug seat shaft hole, when the back lug seat related to the guide sliding shoe is connected with the traveling case shell, the pressure cover is provided with a rear shaft section which is cantilevered towards the inner side of the walking box shell, and the rear shaft section is matched with the rear lug seat shaft hole.

The connecting plate is a vertical plate, the gland can comprise a transverse plate portion and a vertical plate portion, the front end of the transverse plate portion and the upper portion of the connecting plate are located through two pins on one side, the rear end of the driving wheel shaft and the rear end of the traveling wheel shaft are both mounted on the vertical plate portion, a connecting plate top inclined plane with a high front portion and a low rear portion is arranged on the top surface of the connecting plate, and a gland top inclined plane with a high front portion and a low rear portion is arranged on the top surface of the transverse plate.

The walking box shell can be provided with a plurality of through holes which penetrate through the connecting plate and the gland in the front and back direction.

The ear hole is preferably a waist-shaped hole which is wide at the left and right and narrow at the upper and lower parts.

The concave surface is preferably a straight cylindrical surface, and the generatrices of the straight cylindrical surface extend forward and backward.

The drive wheel and drive axle are preferably of one-piece construction.

The bull gear can with walking wheel splined connection, and the two are fixed each other in the axial, the walking wheel cover is in on the walking wheel axle, the middle part of walking wheel with can be through splined connection between the walking wheel axle, the both ends of walking wheel and the shaft hole clearance fit between the walking wheel axle.

A mounting structure of a traveling system of a coal mining machine for an extremely thin coal seam comprises a machine body of the coal mining machine and the traveling system of the coal mining machine, a left traveling box and a right traveling box connecting interface structure are arranged on the rear side wall of the machine body, each traveling box connecting interface structure comprises a lateral groove and a connecting hole extending forwards and backwards, the lateral groove is provided with at least one rear groove wall extending to a groove opening and perpendicular to the connecting hole, the front end of the connecting hole extends to the rear groove wall and is communicated with the lateral groove, the front side wall of the traveling box shell is attached to the rear side wall of the machine body and is positioned between the lateral groove and the rear side wall by a pin structure, the traveling box shell is fixed on the machine body by a left screw and a right screw, two sets of screws are respectively and correspondingly inserted into the left connecting hole and the right connecting hole, the heads of the screws are pressed, the left threaded block and the right threaded block are respectively abutted against the left rear groove wall and the right rear groove wall, the walking box shell has a plurality of different installation angle positions by taking the axis of the driving wheel shaft as a rotation center, and two groups of holes for penetrating screws on the left and right groups of holes on the walking box shell do not exceed the range of the connecting holes in the up-down left-right directions when the installation angles are different.

The utility model has the advantages that:

the utility model discloses an adopt the driving wheel axle to add the dual-axis structure's of running gear axle traveling system, the driving wheel diameter of the epaxial installation of driving wheel compares the walking wheel of original installation and reduces by a wide margin, the sunken surface that the left side of the ear seat of direction piston shoes and/or right side set up simultaneously can make the mounted position of driving wheel axle more be close to the running gear axle, make driving wheel axle and running gear axle reduce at direction of height's drop, consequently under the unchangeable condition of coal-winning machine fuselage plane height, the fuselage below, the mistake coal height of scraper conveyor top can increase a lot, consequently, can solve thin or extremely thin coal seam coal-winning machine and be meetting the bold coal, scraper machine card chain such as waste rock, coal-winning machine resistance increases and effective traction force not enough scheduling.

The utility model discloses can make the coal-winning machine have lower machine face height under the condition of equal cross coal height for the coal-winning machine becomes probably to the exploitation in thin or extremely thin coal seam, and adaptability improves greatly.

Due to the adoption of the integrated driving wheel, the diameters of the wheel shaft and the gear part of the driving wheel can be smaller, the height of the machine face can be set lower, and the coal passing height under the machine body is larger. Under the condition of unchanged height of the machine surface, the coal passing height can be further increased. The large gear is meshed with the driving wheel with smaller diameter, so that the traveling mechanism has larger transmission ratio, the size of the related structure of the coal mining machine traction system serving as a preceding stage transmission system can be smaller, the service life of the related structure can be longer, and meanwhile, due to the adoption of multi-gear transmission of the driving wheel to the traveling wheel through the large gear, the service life of the gear can be greatly prolonged compared with the direct driving of the driving wheel to the traveling wheel.

The ear holes are waist-shaped holes which are wide left and right and narrow up and down, and are beneficial to providing required space for the horizontal swinging of the guide sliding shoes relative to the walking box shell.

The walking wheel is connected with the walking wheel shaft in a spline mode, the walking wheel shaft is supported on the front side wall and the rear side wall of the walking box shell through bearings, and the diameter of the walking wheel can be smaller after the connecting structure is adopted, so that the lower machine face height and the better adaptability can be kept.

Drawings

Fig. 1 is a front view of a first embodiment (left side travel system) of the present invention;

FIG. 2 is a cross-sectional view of the step A-A of FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 1;

fig. 4 is a partial sectional view (horizontal direction) of a first embodiment (left side travel system) of the present invention;

FIG. 5 is a partial cross-sectional view (vertical) of the integrated drive wheel of FIG. 1;

FIG. 6 is a partial cross-sectional view (vertical) of the walking wheel assembly of FIG. 1;

FIG. 7 is a schematic view of the assembly of the walking wheel assembly and the walking wheel shaft of FIG. 1;

FIG. 8 is a cross-sectional view of the walking wheel assembly of FIG. 1;

FIG. 9 is a front view of the guide shoe of FIG. 1;

FIG. 10 is a cross-sectional view C-C of FIG. 9;

FIG. 11 is a top view of FIG. 9;

fig. 12 is a front view of a second embodiment (left side travel system) of the present invention;

FIG. 13 is a cross-sectional view of the step A-A of FIG. 12;

FIG. 14 is a cross-sectional view B-B of FIG. 12;

fig. 15 is a partial sectional view (horizontal direction) of a second embodiment (left side travel system) of the present invention;

FIG. 16 is a partial cross-sectional view (vertical) of the integrated drive wheel of FIG. 12;

FIG. 17 is a partial cross-sectional view (vertical) of the walking wheel assembly of FIG. 12;

FIG. 18 is a schematic view of the assembly of the road wheel assembly and the road wheel axle of FIG. 12;

FIG. 19 is a cross-sectional view of the walking wheel assembly of FIG. 12;

FIG. 20 is a front view of the guide shoe of FIG. 12;

FIG. 21 is a cross-sectional view C-C of FIG. 20;

FIG. 22 is a top view of FIG. 20;

fig. 23 is a schematic view showing another installation position of the walking box casing according to the first embodiment (left side walking system) of the present invention.

Reference numerals:

1. an integral drive wheel;

2. a traveling wheel assembly; 21. a bull gear; 22. a traveling wheel; 221. a front positioning hole of the traveling wheel; 222. a rear positioning hole of the traveling wheel; 223, connecting a spline with a traveling wheel; 23. a support half ring; 24. a support gland;

31. a running wheel axle; 311. a front positioning shaft of the walking wheel shaft; 312. a rear positioning shaft of the walking wheel shaft; 313. the traveling wheel shaft is connected with a spline; 314. a rear oil hole; 315. a front oil hole; 32. a bearing;

4. a guide shoe; 41. a base; 411. a front side wall; 412. a rear sidewall; 413. a top plate; 414. a barb; 42. an ear mount; 421. an ear hole; 422. a support plate; 43. a recessed surface;

51. a connecting plate; 511. upper positioning; 512. lower positioning; 513. connecting the plate top inclined plane; 52. a transition seat; 521. a front shaft section; 53. a retainer ring; 54. a gland; 541. a rear shaft section; 542. a gland top inclined plane; 55. a first end cap; 56. a second end cap.

71. A thread block; 72. a bolt;

91. a traction housing; 911. a lateral slot; 912. connecting holes; 913. a traction drive final gear;

92. a track.

Detailed Description

The utility model discloses a running system of extremely thin coal seam coal-winning machine, as shown in fig. 1-23, including walking case casing, drive wheel, driving wheel axle, walking wheel subassembly 2, walking wheel axle 31 and direction piston shoes 4, the walking wheel axle with the driving wheel axle all is in through the rotatory support of bearing on the lateral wall around the walking case casing. A large gear 21 and a traveling wheel 22 in the traveling wheel assembly are coaxially and fixedly connected, and the traveling wheel is coaxially arranged on the traveling wheel shaft. The driving wheel is coaxially fixed on the driving wheel shaft. The bull gear is externally engaged with the driving wheel.

The guide shoe includes a base 41 and an ear mount 42 located above the base generally midway along the left-right length. The base includes a front side wall 411, a rear side wall 412 and a top plate 413 connected between the tops of the front and rear side walls, the bottom of either the front or rear side wall being provided with barbs 414. The left and right ends of the base are respectively surrounded by a front side wall, a top plate, a rear side wall and barbs to form a guide groove extending left and right and used for being matched with the rail 92. The rear surface of the front side wall, the bottom surface of the top plate, the front surface of the rear side wall and the top surface of the barb are all provided with wear-resistant layers. The guide slipper is installed at the lower part of the walking box shell, and the swinging connection of the guide slipper and the walking box shell is realized through an ear hole 421 on an ear seat of the guide slipper. Ideally, the axis of the walking wheel shaft coincides with the center line of the ear hole. The guide sliding shoes can have small amount of movement relative to the walking box shell in the front-back direction, so that the guide sliding shoes have enough swinging space in the horizontal direction and the vertical direction.

The guide shoe is provided with a left concave surface and a right concave surface 43 which are respectively concave towards the inner part of the base, and the concave surfaces are positioned on at least one position of the left side surface and the right side surface of the lug seat, the left top surface and the right top surface of the base which are separated by the lug seat and the transition connection part of the left side surface and the right side surface of the lug seat and the top surface of the base (namely the top surface of the top plate 413). The recessed surface is arranged to leave a space for the driving wheel shaft to be installed closer to the walking wheel shaft in the radial direction. The drive axle is disposed as close as possible to the recessed surface in the radial direction, and the drive axle is located between the lug and one of the guide grooves in the left-right direction.

The traveling system of current thin or extremely thin coal seam coal-winning machine only has a root axis, promptly the utility model provides a driving wheel axle, its front portion is located the fuselage of coal-winning machine, connects the traction system of coal-winning machine, receives the power that comes from traction system, and the rear portion is located traveling system, the direct mount walking wheel on it. The road wheels are usually large in module and large in diameter in consideration of the external meshing walking force and wear requirements. According to the current design rule, the larger the diameter of the gear installed on the driving wheel shaft is, the lower the axis of the driving wheel shaft is relative to the machine surface, so that the thicker the machine body is, the smaller the coal passing height under the condition of the same machine surface height is.

When adopting the utility model discloses a behind the traveling system of the biax structure of drive wheel axle with the running wheel axle, the last installation of drive wheel axle is no longer the walking wheel, but the drive wheel, because no walking wheel and orbital meshing requirement have been met, the diameter of drive wheel is compared the walking wheel and can is dwindled by a wide margin, consequently, the axis of drive wheel axle can shift up by a wide margin, consequently, the obvious attenuate of fuselage thickness of needs, correspondingly, the high obvious increase of the coal of passing under the circumstances that the machine face height is the same, consequently, can solve thin or extremely thin seam coal mining machine and be meetting the bold coal, scraper conveyor clamp chain such as waste rock, the coal-winning machine resistance increases and effective traction force.

The mounting position of the driving wheel shaft can be closer to the traveling wheel shaft due to the concave surface, the fall of the driving wheel shaft and the traveling wheel shaft in the height direction can be set smaller, and the coal passing height below the machine body and above the scraper conveyor can be further increased under the condition that the height of the machine surface of the machine body of the coal mining machine is unchanged.

The concave surface is at least provided with one, is positioned on the left side or the right side of the lug seat, but is preferably respectively provided with one on the left side and the right side, so that the same guide sliding shoe can be used for a left side walking system and a right side walking system of the coal mining machine. Further, the guide shoes are generally of a left-right symmetrical structure and are interchangeably installed when used on left and right travel boxes on a shearer loader.

The arrangement of the concave surface ensures that a top plate or a guide groove close to the driving wheel shaft on one side in the left-right direction is positioned on the left or right outer side of the driving wheel shaft, and the sizes of the top plate and the guide groove have enough adjusting space and can not be limited by the driving wheel shaft. For example, the length of the guide groove can be appropriately increased, that is, the length of the corresponding wear-resistant layer is longer, so that the service life of the guide shoe can be improved to a certain extent, and particularly, the thickness of the top plate can be appropriately increased upwards, so that the overall strength of the guide shoe can be improved.

The driving wheel transmits power output by the traction transmission final gear 913 to the large gear 21, the large gear and the walking wheel 22 rotate synchronously, finally the walking wheel 22 is meshed with the rail 92 to roll in the frame opening position limited by the guide sliding shoe 4, and the rail 92 is located in a groove of the scraper conveyor.

The utility model discloses constitute the walking case of biax (driving wheel axle and walking shaft) structure, compare the walking case of current unipolar structure, the walking wheel can be littleer, and the flank profile adopts ordinary involute flank profile can, existing be favorable to realizing enough big cross coal height, can guarantee running system and the orbital normal meshing of scraper conveyor again.

The driving wheel and the driving wheel shaft are preferably of an integrated structure and can be called as an integrated driving wheel 1, compared with a split structure, the diameters of the wheel shaft and the gear part can be smaller, the height of a machine face can be set lower, and meanwhile, the coal passing height under a larger machine body is also provided. Under the condition of unchanged height of the machine surface, the coal passing height can be further increased. The large gear is meshed with the driving wheel with smaller diameter, so that the traveling mechanism has larger transmission ratio, the size of the related structure of the coal mining machine traction system serving as a preceding stage transmission system can be smaller, the service life of the related structure can be longer, and meanwhile, due to the adoption of multi-gear transmission of the driving wheel to the traveling wheel through the large gear, the service life of the gear can be greatly prolonged compared with the direct driving of the driving wheel to the traveling wheel.

The guide sliding shoe can adopt the following two structural types:

1. the front side wall and the rear side wall of the base are of left and right continuous structures, and the ear seats are double-ear seats and comprise front ear seats and rear ear seats. In this case, the front and rear ear pieces are attached to the inner sides of the front and rear side walls of the travel box housing, respectively. Referring to the first embodiment, when the barb 414 is attached to the front side wall of the base, the bull gear is disposed on the front side of the road wheel; when the barbs 414 are attached to the rear wall of the chassis, as shown in fig. 9-11, the bull gear is disposed on the rear side of the traction wheel (see fig. 2, 3, 6, 7, 8), with the drive wheel gear closer to the rear wall of the traction box housing, as shown in fig. 4 and 5.

2. One of the front side wall and the rear side wall of the base is of a left-right continuous structure, the other is of a left-right middle disconnecting structure, and the ear seat is a single ear seat. Referring to the second embodiment, the guide shoe can be installed in two ways: (1) as shown in fig. 20-22, the preceding lateral wall of base is left right continuous structure, the back lateral wall of base is left right direction middle part disconnection structure, the ear seat only has preceding ear seat, the top of preceding ear seat is equipped with the backup pad 422 of backward overhang, the barb is connected the preceding lateral wall of base. In this case, the front ear mount is attached to the inside of the front side wall of the travel box housing, and the large gear is disposed on the front side of the travel wheels (see fig. 13, 14, 17, 18, 19), with the drive wheel gears closer to the front side wall of the travel box housing, as shown in fig. 15, 16.

(2) The rear side wall of base is for controlling continuous structure, the preceding lateral wall of base is left right direction middle part disconnection structure, the ear seat only has the rear ear seat, the top of rear ear seat is equipped with the backup pad 422 that stretches to the front overhang, the barb is connected the rear side wall of base. In this case, the rear lug is attached to the inner side of the rear side wall of the travel box housing, and the large gear is disposed on the rear side of the travel wheel.

The top surface of the support plate can be in the same plane or curved surface as the top surface of the corresponding ear mount. Ideally, a certain gap is kept between the end face of the overhanging end of the supporting plate and the inner side face of the corresponding side wall of the walking box shell, and a space is reserved for horizontal deflection of the guide slipper. Under the stress state, the overhanging end face of the supporting plate is often contacted with the corresponding side wall of the walking box shell. The supporting plate and the corresponding side wall of the walking box shell act together to limit the front and back installation position and horizontal deflection of the guide sliding shoe, so that the functions of protection and support are achieved.

The walking box shell can comprise a connecting plate 51, a transition seat 52, a retainer ring 53 and a gland 54, wherein the connecting plate 51 and the gland 54 are fixedly connected and enclose a box body structure with a closed front surface, a closed rear surface and a closed upper surface. The driving wheel shaft is rotatably supported on the connecting plate and the gland through a bearing, and the retainer ring is sleeved on the driving wheel shaft and fixed on the connecting plate from the inner side of the walking box shell to axially limit the front end bearing. The transition seat 52 is fixed on the connecting plate from the inner side of the walking box shell, and the front end and the rear end of the walking wheel shaft are respectively and rotatably supported on the transition seat and the gland through the bearing 32. When the front lug seat of the guide sliding shoe is connected with the traveling case shell, the transition seat is provided with a front shaft section 521 which is overhung towards the inner side of the traveling case shell, and the front shaft section is matched with a front lug seat shaft hole. When the rear lug seat of the guide sliding shoe is connected with the walking box shell, a rear shaft section 541 which stretches towards the inner side of the walking box shell is arranged on the press cover, and the rear shaft section is matched with a rear lug seat shaft hole. The assembly body of connecting plate, transition seat and retaining ring acts as the preceding lateral wall of walking case casing.

The connecting plate 51 is a vertical plate, the gland 54 includes a horizontal plate portion and a vertical plate portion, and the front end of the horizontal plate portion and the upper portion of the connecting plate are positioned through a pin on two sides. The rear end of the driving wheel shaft and the rear end of the walking wheel shaft are both arranged on the vertical plate part. The vertical plate part of the gland is detachably and fixedly connected with a first end cover 55 and a second end cover 56, and the first end cover and the second end cover respectively cover the rear ends of the driving wheel shaft and the walking wheel shaft from the outer side of the walking box shell. The assembly body of gland, first end cover and second end cover acts as the back lateral wall of walking case casing, the diaphragm portion acts as the roof of walking case casing. The front side of the connecting plate may be provided with a protruding pin-type positioning structure, including an upper positioning 511 and a lower positioning 512, for positioning when mounting the traveling box housing on the shearer traction housing 91.

The top surface of the connecting plate is preferably provided with a connecting plate top inclined surface 513 with a high front and a low back, and the top surface of the transverse plate part of the gland is preferably provided with a gland top inclined surface 542 with a high front and a low back. The angle of inclination of the connecting plate top inclined surface 513 and the gland top inclined surface 542 is preferably parallel or nearly parallel to the bottom surface of the top beam of the shearer carriage, which allows for efficient use of space without affecting the effective height of the machine face.

The traveling box housing may be provided with a plurality of through holes which pass through the connecting plate and the pressing cover in the front and rear direction, and when the traveling box housing is required to be connected to the traction housing 91, the bolts 72 may be inserted thereinto.

The ear holes are preferably waist-shaped holes which are wide left and right and narrow up and down, and are beneficial to providing required space for the horizontal swinging of the guide sliding shoes relative to the walking box shell.

The concave surface is preferably a straight cylindrical surface, the generatrices of which extend back and forth. In the assembled state, the drive axle is arranged close to the recessed surface. The radius of curvature of the concave surface is determined by the diameter of the driving axle and should generally be no less than the radius of the driving axle.

The bull gear can pass through the spline with the walking wheel is connected, and the two are fixed each other in the axial. In this embodiment, the support half rings 23 and the support pressing covers 24 fixed on the walking wheel fix the bull gear 21 on the walking wheel 22 axially, the two support half rings 23 are clamped in the positioning grooves of the walking wheel 22, and the support pressing covers 24 are fixed in the positioning holes on the walking wheel through screws.

The traveling wheels are sleeved on the traveling wheel shafts and are preferably connected with the traveling wheel shafts through splines. In this embodiment, the middle of the central hole of the traveling wheel is a traveling wheel connecting spline 223, two ends of the traveling wheel connecting spline are a traveling wheel front positioning hole 221 and a traveling wheel rear positioning hole 222 respectively, the traveling wheel front positioning hole 221 and the traveling wheel rear positioning hole 222 are respectively matched with the shaft holes of a traveling wheel shaft front positioning shaft 311 and a traveling wheel shaft rear positioning shaft 312 of a traveling wheel shaft, and the traveling wheel connecting spline 223 is connected with the traveling wheel shaft connecting spline 313. By adopting the connecting structure of the walking wheels and the walking wheel shaft, the diameter of the walking wheels can be smaller, so that the height of a lower machine surface and better adaptability can be kept.

In order to ensure the sufficient lubrication of the spline connection between the travelling wheel and the travelling wheel shaft, a front oil hole 315 and a rear oil hole 314 can be arranged in the travelling wheel shaft and/or the travelling wheel, the outward opening of the oil holes is arranged on the corresponding end surface of the travelling wheel shaft and/or the travelling wheel, and the front oil hole 315 and the rear oil hole 314 are respectively communicated with the spline connection from the front and the rear.

The utility model also discloses a mounting structure of extremely thin coal seam coal-winning machine traveling system, including the fuselage of coal-winning machine and an arbitrary extremely thin coal seam coal-winning machine traveling system of the aforesaid, two sets of walking case connection interface structures about being equipped with on the rear side wall of fuselage, every group walking case connection interface structure includes a side direction groove 911 and a connecting hole 912 that extends from beginning to end. The number of the notches of the lateral grooves can be one or two, the positions and the directions of the notches are not limited, but at least one rear groove wall which extends to the notches and is vertical to the connecting hole is arranged in the lateral groove, and the front end of the connecting hole extends to the rear groove wall and is communicated with the lateral grooves. The front side wall of the walking box shell is attached to the rear side wall of the machine body, and the two are positioned through a pin structure. The walking box shell is fixed on the machine body through a left group of screws 72 and a right group of screws 72, the two groups of screws are respectively and correspondingly inserted into the left connecting hole and the right connecting hole, the heads of the screws are pressed on the walking box shell, the tail part of each group of screws is in threaded connection with one thread block 71, and the left thread block and the right thread block are respectively abutted against the left rear groove wall and the right rear groove wall. The walking box shell has a plurality of different installation angles by taking the axis of the driving wheel shaft as a rotation center, two groups of holes for penetrating screws, namely the through holes, on the left and right sides of the walking box shell do not exceed the range of the connecting holes in the up-down left-right directions when the installation angles are different, namely the connecting holes have enough width and height, even if the installation angles are different, the same group of screws are still connected with the same group of walking box connecting interface structures in a matched mode, therefore, the part structure is simple, the thread block does not need large position change when the installation angles are changed, and the mounting and dismounting are convenient.

By adopting the mounting structure, when the machine body is raised or the coal passing height is increased, the position of the axis of the driving wheel shaft can be kept unchanged, the walking box shell is swung at a small angle, the axis of the walking wheel shaft moves downwards relative to the axis of the driving wheel shaft and then is fixed again, as shown in figure 23, and conversely, the axis of the walking wheel shaft moves upwards relative to the axis of the driving wheel shaft and then is fixed again, as shown in figure 1. And for the determined walking system, the size of the swing angle of the walking box shell is determined according to the planned adjustment amount of the height position of the machine body during adjustment. The height position of the coal mining machine can be directly adjusted on the use site, the operation is simple, and the method is very favorable for the condition that the mining height needs to be temporarily increased or large rocks need to pass under the machine body, so the adaptability of the low-machine-body thin seam coal mining machine can be greatly improved.

Claims (15)

1. The utility model provides a very thin coal seam coal-winning machine traveling system which characterized in that: the walking box comprises a walking box shell, a driving wheel shaft, a walking wheel assembly, a walking wheel shaft and a guide sliding shoe, wherein the walking wheel shaft and the driving wheel shaft are rotatably supported on the front side wall and the rear side wall of the walking box shell through bearings, a gear wheel and a walking wheel in the walking wheel assembly are coaxially and fixedly connected, the walking wheel is coaxially installed on the walking wheel shaft, the driving wheel is coaxially fixed on the driving wheel shaft, the gear wheel is externally meshed with the driving wheel, the guide sliding shoe comprises a base and an ear seat positioned in the middle of the left and right directions above the base, the base comprises a front side wall, a rear side wall and a top plate connected between the tops of the front side wall and the rear side wall, barbs are arranged at the bottoms of the front side wall or the rear side wall, and guide grooves extending left and right are respectively defined by the front, the surface of the guide groove is provided with a wear-resistant layer, the guide slipper is installed on the lower portion of the walking box shell, the guide slipper is connected with the walking box shell in a swinging mode through an ear hole in an ear seat of the guide slipper, the axis of the walking wheel shaft is overlapped with the center line of the ear hole, a left concave surface and a right concave surface which are concave towards the inside of the base are respectively arranged on the guide slipper, the concave surfaces are located on at least one of the left side surface and the right side surface of the ear seat, the left top surface and the right top surface of the base, which are separated by the ear seat, and the transition connection positions of the left side surface and the right side surface of the ear seat and the top surface of the base, the driving wheel shaft is arranged close to the concave surfaces in the radial direction, and the driving wheel shaft is located between the.

2. The traveling system of the ultra-thin seam mining machine according to claim 1, characterized in that: continuous structure about preceding lateral wall and the back lateral wall of base are, the ear seat is ears ear seat, including preceding ear seat and back ear seat, preceding ear seat and back ear seat are connected respectively the inboard of the preceding lateral wall of walking case casing and back lateral wall, work as the barb is connected during the preceding lateral wall of base, the gear wheel is arranged in the front side of walking the wheel, works as the barb is connected during the back lateral wall of base, the gear wheel is arranged in the rear side of walking the wheel.

3. The traveling system of the ultra-thin seam mining machine according to claim 1, characterized in that: the front side wall of the base is of a left-right continuous structure, the rear side wall of the base is of a left-right middle breaking structure, the ear seat is only provided with a front ear seat, a supporting plate which is cantilevered backwards is arranged at the top of the front ear seat, the barb is connected to the front side wall of the base, the front ear seat is connected to the inner side of the front side wall of the walking box shell, and the large gear is arranged on the front side of the walking wheel; or, the rear side wall of base is for controlling continuous structure, the preceding lateral wall of base is left right direction middle part disconnection structure, the ear seat only has the rear ear seat, the top of rear ear seat is equipped with the backup pad that stretches by overhang forward, the barb is connected the rear side wall of base, the rear ear seat is connected the inboard of the rear side wall of walking case casing, the gear wheel is arranged the rear side of walking wheel.

4. The traveling system of the extremely thin seam mining machine according to claim 2 or 3, characterized in that: the traveling case shell comprises a connecting plate, a transition seat, a retainer ring and a gland, wherein the connecting plate and the gland are fixedly connected and enclosed into a case structure with three closed front, back and upper surfaces, the driving wheel shaft is rotatably supported on the connecting plate and the gland through a bearing, the retainer ring is sleeved on the driving wheel shaft and is fixed on the connecting plate from the inner side of the traveling case shell to axially limit the front end bearing, the transition seat is fixed on the connecting plate from the inner side of the traveling case shell, the front end and the back end of the traveling wheel shaft are respectively rotatably supported on the transition seat and the gland through bearings, when the front lug seat related to the guide sliding shoe is connected with the traveling case shell, the transition seat is provided with a front shaft section which is overhung towards the inner side of the traveling case shell, the front shaft section is matched with a front lug seat shaft hole, when the back lug seat related to the guide sliding shoe is connected with the traveling case shell, the pressure cover is provided with a rear shaft section which is cantilevered towards the inner side of the walking box shell, and the rear shaft section is matched with the rear lug seat shaft hole.

5. The traveling system of the extremely thin seam mining machine according to claim 4, characterized in that: the connecting plate is a vertical plate, the gland comprises a transverse plate portion and a vertical plate portion, the front end of the transverse plate portion and the upper portion of the connecting plate are positioned through a pin on one side and two pins on the other side, the rear end of the driving wheel shaft and the rear end of the traveling wheel shaft are both mounted on the vertical plate portion, a connecting plate top inclined plane with a high front portion and a low rear portion is arranged on the top surface of the connecting plate, and a gland top inclined plane with a high front portion and a low rear portion is arranged on the top surface of the transverse plate.

6. The traveling system of the extremely thin seam mining machine according to claim 5, characterized in that: and the walking box shell is provided with a plurality of through holes which are communicated with the connecting plate and the gland in a front-back manner.

7. The extremely thin seam mining machine traveling system according to claim 1, 2 or 3, characterized in that: the ear hole is a waist-shaped hole which is wide at the left and right and narrow at the upper and lower parts.

8. The traveling system of the extremely thin seam mining machine according to claim 4, characterized in that: the ear hole is a waist-shaped hole which is wide at the left and right and narrow at the upper and lower parts.

9. The extremely thin seam mining machine traveling system according to claim 1, 2 or 3, characterized in that: the concave surface is a straight cylindrical surface, and a bus of the straight cylindrical surface extends forwards and backwards.

10. The traveling system of the extremely thin seam mining machine according to claim 4, characterized in that: the concave surface is a straight cylindrical surface, and a bus of the straight cylindrical surface extends forwards and backwards.

11. The extremely thin seam mining machine traveling system according to claim 1, 2 or 3, characterized in that: the driving wheel and the driving wheel shaft are of an integrated structure.

12. The traveling system of the extremely thin seam mining machine according to claim 4, characterized in that: the driving wheel and the driving wheel shaft are of an integrated structure.

13. The extremely thin seam mining machine traveling system according to claim 1, 2 or 3, characterized in that: the large gear is connected with the traveling wheel through splines, the large gear and the traveling wheel are fixed with each other in the axial direction, the traveling wheel is sleeved on the traveling wheel shaft, the axial middle part of the traveling wheel is connected with the traveling wheel shaft through splines, and two ends of the traveling wheel are in clearance fit with the shaft hole between the traveling wheel shaft.

14. The traveling system of the extremely thin seam mining machine according to claim 4, characterized in that: the large gear is connected with the traveling wheel through splines, the large gear and the traveling wheel are fixed with each other in the axial direction, the traveling wheel is sleeved on the traveling wheel shaft, the axial middle part of the traveling wheel is connected with the traveling wheel shaft through splines, and two ends of the traveling wheel are in clearance fit with the shaft hole between the traveling wheel shaft.

15. The utility model provides a very thin coal seam coal-winning machine traveling system mounting structure which characterized in that: the ultra-thin coal seam mining machine walking system comprises a machine body of a mining machine and the ultra-thin coal seam mining machine walking system as claimed in any one of claims 1 to 14, wherein a left walking box and a right walking box connecting interface structure are arranged on the rear side wall of the machine body, each walking box connecting interface structure comprises a lateral groove and a connecting hole extending forwards and backwards, the lateral groove is provided with at least one rear groove wall extending to a groove opening and perpendicular to the connecting hole, the front end of the connecting hole extends to the rear groove wall and is communicated with the lateral groove, the front side wall of the walking box shell is attached to the rear side wall of the machine body and is positioned between the lateral groove and the rear side wall by a pin structure, the walking box shell is fixed on the machine body by a left screw and a right screw, the two screws are respectively and correspondingly inserted into the left connecting hole and the right connecting hole, the heads of the screws, the left threaded block and the right threaded block are respectively abutted against the left rear groove wall and the right rear groove wall, the walking box shell has a plurality of different installation angle positions by taking the axis of the driving wheel shaft as a rotation center, and two groups of holes for penetrating screws on the left and right groups of holes on the walking box shell do not exceed the range of the connecting holes in the up-down left-right directions when the installation angles are different.

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