CN116537778A - Walking box assembly of coal mining machine and combined walking box series of coal mining machine - Google Patents

Abstract

The invention relates to a traveling box assembly of a coal mining machine and a traveling box series of a combined coal mining machine, wherein the traveling box assembly comprises an upper shell, a lower shell and a transition frame, the upper shell and the lower shell are all box structures with inner cavities communicated up and down, and a pair of one-to-one shaft assembly mounting holes and a pair of two-shaft assembly mounting holes are formed in the front side wall and the rear side wall of the upper shell; only one-to-one shaft assembly mounting holes or one-to-one shaft assembly mounting holes and one-to-two shaft assembly mounting holes are formed in the front side wall and the rear side wall of the lower shell; the latter comprises a coal mining machine traveling box with three gears of high, medium and low; the coal mining machine walking box with the height of low gear adopts only an upper shell, and the coal mining machine walking box with the height of medium and high gears adopts an upper shell, a lower shell and a transition frame at the same time, and the upper shell is detachably fixed on the rear end face of the traction part shell; the transition frame is detachably fixed below the traction part shell, and the lower shell is detachably and fixedly connected to the rear end face of the transition frame. The invention can realize flexible adjustment of the overall height of the walking box and reduce the production cost.

Description

Walking box assembly of coal mining machine and combined walking box series of coal mining machine

Technical Field

The invention relates to a coal cutter traveling case, in particular to a longitudinal split-type coal cutter traveling case, which can change the height through modularized splitting combination.

Background

The coal mining machine is a key device for coal production, and the traveling box is a key part of the coal mining machine. The coal mining machine needs to select walking boxes with different heights according to the thickness of the coal seam. Due to the diversity of coal seam occurrence, the same coal mining machine may need to be provided with walking boxes with various specifications. The walking box shell is generally of an integral casting structure, the more the walking box specifications of the same coal mining machine need to be configured, the more wood forms and clay cores are required to be manufactured for casting the walking box shell, the cost is increased, and the assembly and disassembly workload is larger when the specifications are changed.

Disclosure of Invention

The invention aims to provide a traveling box assembly of a coal mining machine and a traveling box series of a combined coal mining machine, which can realize flexible adjustment of the overall height of the traveling box through increasing and decreasing modules, and can also reduce the production cost.

The main technical scheme of the invention is as follows:

the walking box assembly of the coal mining machine comprises an upper shell, a lower shell and a transition frame, wherein the upper shell and the lower shell are of box structures with inner cavities penetrating up and down, the outer side surface of the front side wall of the upper shell is a mounting reference surface, an upper shell round positioning spigot and a lower upper shell round positioning spigot are arranged on the outer side surface of the front side wall of the upper shell, and a pair of one-to-one shaft assembly mounting holes and a pair of two-shaft assembly mounting holes are respectively arranged on the front side wall and the rear side wall of the upper shell from top to bottom; the outer side surface of the front side wall of the lower shell is a mounting reference surface, an upper shell round positioning spigot and a lower shell round positioning spigot are arranged on the outer side surface of the front side wall of the lower shell, and meanwhile, a one-to-one shaft assembly mounting hole is only formed in the front side wall and the rear side wall of the lower shell, or a one-to-one shaft assembly mounting hole and a one-to-two shaft assembly mounting hole are respectively formed from top to bottom; the top surface of transition frame is the installation reference surface, and the top of transition frame is equipped with the round locating plate that the axis extends from top to bottom and is located two risers of round locating plate left and right sides, and locating plate and riser all upwards bulge in the top surface, are equipped with the pinhole that extends around and link up on the riser, and the rear side terminal surface of transition frame is the locating surface, is equipped with two upper and lower be used for with lower casing round locating spigot one-to-one and complex transition frame round locating spigot on it.

The upper and lower upper shell round positioning rabbets are respectively coaxially arranged with a first shaft assembly mounting hole and a second shaft assembly mounting hole on the upper shell; when being equipped with one-to-one axle subassembly mounting hole and a pair of diaxon subassembly mounting hole on the lower casing, upper and lower two lower casing circle location tang set up with an axle subassembly mounting hole and diaxon subassembly mounting hole coaxial on the lower casing respectively, when only being equipped with one-to-one axle subassembly mounting hole on the lower casing, the lower casing circle location tang that is located the below sets up with an axle subassembly mounting hole coaxial on the lower casing.

The upper shell round positioning spigot and the lower shell round positioning spigot are both convex spigot, and the transition frame round positioning spigot is a concave spigot.

When the lower shell is provided with one-to-one shaft assembly mounting holes and one-to-two shaft assembly mounting holes, threaded holes coaxial with corresponding spigots are formed in the bottom surfaces of the upper transition frame round positioning spigots and the lower transition frame round positioning spigots, and when the lower shell is provided with only one-to-one shaft assembly mounting holes, threaded holes coaxial with corresponding spigots are formed in the bottom surfaces of the lower transition frame round positioning spigots.

The left part and the right part of the transition frame are respectively provided with a plurality of threaded holes; the left and right sides of the upper part of the upper shell are respectively provided with a plurality of screw holes, and the left and right sides of the lower part of the upper shell are respectively provided with a plurality of screw holes; the left part and the right part of the lower shell are respectively provided with a plurality of bolt holes.

The widths of the upper shell and the lower shell in the left-right direction are equal, and the thicknesses of the upper shell and the lower shell in the front-back direction are equal.

The upper housing may be formed by casting or by welding a plate, and the lower housing may be formed by casting or by welding a plate.

A combined type coal cutter traveling box series comprises coal cutter traveling boxes with three gears of high, medium and low, which are assembled and installed by adopting the coal cutter traveling box components; the coal cutter walking box with the low gear is characterized in that the upper shell is only adopted, a driving wheel assembly is arranged at a first shaft assembly mounting hole in the upper shell, a single-row walking wheel assembly or a double-row walking wheel assembly is arranged at a second shaft assembly mounting hole, when the single-row walking wheel assembly is arranged, a driving wheel in the driving wheel assembly is externally meshed with a walking wheel in the walking wheel assembly, when the double-row walking wheel assembly is arranged, a driving wheel in the driving wheel assembly is externally meshed with a large gear in the walking wheel assembly, and the large gear in the walking wheel assembly and the walking wheel coaxially and synchronously rotate; the coal cutter walking box with the middle gear adopts the upper shell, the lower shell and the transition frame at the same time, wherein the lower shell adopts the lower shell only provided with one-to-one shaft assembly mounting holes, the driving wheel assembly and the idler wheel assembly are respectively mounted in the one-shaft assembly mounting holes and the two-shaft assembly mounting holes in the upper shell, the single-row walking wheel assembly or the double-row walking wheel assembly is mounted at the one-shaft assembly mounting holes in the lower shell, when the single-row walking wheel assembly is mounted, the idler wheel in the idler wheel assembly is simultaneously externally meshed with the driving wheel in the driving wheel assembly and the walking wheel in the walking wheel assembly, and when the double-row walking wheel assembly is mounted, the idler wheel in the idler wheel assembly is simultaneously externally meshed with the driving wheel in the driving wheel assembly and the large gear in the walking wheel assembly; the coal cutter walking box with the high gear adopts the upper shell, the lower shell and the transition frame at the same time, wherein the lower shell adopts a lower shell provided with a pair of axle assembly mounting holes and a pair of axle assembly mounting holes, a driving wheel assembly and a first idler wheel assembly are respectively arranged in the axle assembly mounting holes and the axle assembly mounting holes in the upper shell, a second idler wheel assembly and a walking wheel assembly are respectively arranged in the axle assembly mounting holes and the axle assembly mounting holes in the lower shell, the walking wheel assembly is a single row walking wheel assembly or a double row walking wheel assembly, when the single row walking wheel assembly is arranged, driving wheels in the driving wheel assembly, first idler wheels in the first idler wheel assembly, second idler wheels in the second idler wheel assembly and walking wheels in the walking wheel assembly are sequentially and externally meshed from top to bottom, and when the double row walking wheel assembly is arranged, driving wheels in the driving wheel assembly, first idler wheels in the first idler wheel assembly, second idler wheels in the second idler wheel assembly and big gears in the walking wheel assembly are sequentially and externally meshed from top to bottom; the upper shell is detachably and fixedly connected to the rear end face of the traction part shell; the transition frame is detachably and fixedly connected to the lower part of the traction part shell, and the lower shell is detachably and fixedly connected to the rear end face of the transition frame.

The upper shell is positioned on the traction part shell through the outer side surface of the front side wall of the upper shell and the upper shell round positioning spigot; the transition frame is positioned on the traction part shell through the top surface of the transition frame, the round positioning disc and the pin shaft penetrating through the pin hole on the vertical plate, and the lower shell is positioned on the transition frame through the outer side surface of the front side wall of the lower shell and the round positioning spigot of the lower shell.

An upper base plate is arranged between the traction part shell and the upper shell, a lower base plate is arranged between the transition frame and the lower shell, the upper base plate and the lower base plate have various thickness specifications, and the thicknesses of the upper base plate and the lower base plate are equal to each other for the traveling box of the coal mining machine with the height of middle and high gears.

The beneficial effects of the invention are as follows:

because the traditional integral walking box shell is changed into a longitudinal split type modularized combined box structure, all parts in the walking box can be modularized combined according to different height requirements, and therefore the height is flexibly adjusted.

For the high coal cutter traveling case, as a plurality of coal cutter traveling case components are combined into a complete coal cutter traveling case, the volume of a single component is obviously reduced compared with that of a traditional integral traveling case, so that the disassembly and assembly difficulty of traveling case parts is reduced, the maintainability is improved, and the reduced volume is more suitable for welding and forming plates, so that the production cost is reduced and the production period is shortened compared with that of casting and forming. As part of the modules are universal in the walking boxes with different heights, the disassembly and assembly workload can be reduced by changing the height of the walking box.

The adaptability of the longitudinal split type coal mining machine traveling case is improved, so that manufacturers can put into production in advance in a large scale, various different requirements of users are met, the inventory removal period is quick, and the occupied funds are small; for the user side, the improvement cost can be reduced, and the improvement period can be shortened.

Drawings

FIGS. 1a-1d are front, top, left and longitudinal sectional views, respectively, of one embodiment of the upper housing;

FIGS. 2a-2d are front, top, left and longitudinal sectional views, respectively, of one embodiment of the lower housing;

FIGS. 3a-3c are front, top, and A-A stepped cross-sectional views, respectively, of one embodiment of the transition frame;

FIG. 4 is a schematic view of a transition frame and lower housing mounting connection;

FIGS. 5a, 5b are front and longitudinal sectional views, respectively, of one embodiment of a shearer carriage having a low gear height;

FIGS. 6a, 6b are front and longitudinal sectional views, respectively, of one embodiment of a shearer travel box with a mid-range height;

FIGS. 7a and 7b are front and longitudinal sectional views, respectively, of one embodiment of a shearer travel box with a high gear;

FIG. 8 is a schematic view of the mounting structure of a dual row road wheel assembly (with guide shoes);

fig. 9 is a schematic view of an installation structure of a traveling case of a coal mining machine provided with a backing plate and having a low gear.

Reference numerals: 1. an upper housing; 101. the upper shell is provided with a round positioning spigot; 102. a shaft assembly mounting hole; 103. a biaxial component mounting hole; 104. screw holes; 105. bolt holes;

2. a lower housing; 201. a round positioning spigot of the lower shell; 202. a shaft assembly mounting hole; 204. bolt holes;

3. a transition frame; 301. a round positioning disc; 302. a vertical plate; 3021. a pin hole; 303. round positioning spigot of transition frame; 304. a threaded hole; 305. a threaded hole;

4. a drive wheel assembly;

501. an idler assembly; 502. a first idler assembly; 503. a second idler assembly;

6. a road wheel assembly (with guide shoes);

7. a pin shaft;

8. a traction section housing;

9. a backing plate.

Detailed Description

The invention discloses a coal cutter walking box assembly, which comprises an upper shell 1, a lower shell 2 and a transition frame 3, wherein the upper shell and the lower shell are of box structures with inner cavities penetrating up and down, and the inner cavities of the upper shell and the lower shell are used for installing a transmission system of a coal cutter walking part.

The outer side surface of the front side wall of the upper shell is a mounting reference surface, an upper shell round positioning spigot 101 and a lower shell round positioning spigot are arranged on the mounting reference surface of the upper shell, and the upper shell round positioning spigot is a positioning connection structure for mounting the upper shell to the coal mining machine. A pair of axle assembly mounting holes 102 and a pair of axle assembly mounting holes 103 are respectively arranged on the front and rear side walls of the upper shell from top to bottom. A one axle assembly mounting hole 102 is used to mount the drive wheel assembly 4 and a two axle assembly mounting hole 103 is used to mount either the road wheel assembly 6 (including guide shoes, the same applies below) or the idler wheel assembly. The upper housing may be provided in several specifications according to the difference in center distance between the first shaft assembly mounting hole 102 and the second shaft assembly mounting hole 103.

The outer side surface of the front side wall of the lower shell is a mounting reference surface, an upper lower shell round positioning spigot 201 is arranged on the surface, and the mounting reference surface of the lower shell and the lower shell round positioning spigot are positioning connection structures for mounting the lower shell to the coal mining machine. Only one-to-one shaft assembly mounting holes 202 are provided on the front and rear side walls of the lower case (the lower case of this structure is simply referred to as a one-shaft lower case) or one-to-one shaft assembly mounting holes and one-to-two shaft assembly mounting holes are provided from top to bottom, respectively (the lower case of this structure is simply referred to as a two-shaft lower case, see fig. 7 b). Only one pair of axle assembly mounting holes 202 are formed in the front and rear side walls of the lower shell, and the axle assembly mounting holes 202 are used for mounting the travelling wheel assemblies 6; a pair of axle assembly mounting holes and a pair of two axle assembly mounting holes are respectively arranged on the front side wall and the rear side wall of the lower shell from top to bottom, the axle assembly mounting holes are used for mounting idler wheel assemblies, and the two axle assembly mounting holes are used for mounting travelling wheel assemblies 6. For the biaxial lower shell, a plurality of specifications can be set according to the difference of the center distances of the first shaft assembly mounting hole and the second shaft assembly mounting hole.

The drive wheel assembly, idler wheel assembly and road wheel assembly may take the form of corresponding assemblies of existing construction which, in addition to including gears for use as drive wheels, idler wheels or road wheels, typically include axles, bearings, bearing blocks, bearing end caps, seals, etc.

The top surface of the transition frame is a mounting reference surface thereof, the top of the transition frame is provided with a round positioning disc 301 with an axis extending up and down and two vertical plates 302 positioned on the left side and the right side of the round positioning disc, and the positioning disc and the vertical plates are both protruded upwards from the top surface. The vertical plate is provided with a pin hole 3021 extending longitudinally therethrough. The top surface of the transition frame, the round positioning disc and the pin holes are positioning connection structures for installing the transition frame to the coal mining machine. The rear end face of the transition frame is a positioning connection face for the installation of the lower shell, and an upper circular positioning spigot 303 and a lower circular positioning spigot 201 of the transition frame are arranged on the face and are in one-to-one correspondence and matched with the circular positioning spigot 201 of the lower shell.

In the installed state, the transition frame is installed below a haulage housing (hereinafter referred to as haulage housing 8) of the coal mining machine (see fig. 4), and the upper housing and the lower housing are respectively installed on rear side end surfaces of the haulage housing and the transition frame. The upper shell and the lower shell are in no contact.

The upper shell, the lower shell and the transition frame are all preferably in bilateral symmetry.

As a better technical scheme, the upper and lower upper shell round positioning rabbets are respectively coaxially arranged with a first shaft assembly mounting hole and a second shaft assembly mounting hole on the upper shell; when being equipped with one-to-one axle subassembly mounting hole and a pair of diaxon subassembly mounting hole on the lower casing, upper and lower two lower casing circle location tang set up with an axle subassembly mounting hole and diaxon subassembly mounting hole coaxial on the lower casing respectively, when only being equipped with one-to-one axle subassembly mounting hole on the lower casing, the lower casing circle location tang that is located the below sets up with an axle subassembly mounting hole coaxial on the lower casing.

The upper shell round positioning spigot 101 and the lower shell round positioning spigot 201 are both preferably convex spigots, and the transition frame round positioning spigot 303 is a concave spigot.

When being equipped with one-to-one axle subassembly mounting hole and a pair of diaxon subassembly mounting hole on the lower casing, all be equipped with on the bottom surface of two upper and lower transition frame circle location tang with corresponding tang coaxial screw hole 304, when only being equipped with one-to-one axle subassembly mounting hole on the lower casing, be equipped with on the bottom surface of the transition frame circle location tang that is located the below with corresponding tang coaxial screw hole 304. The threaded holes 304 are used for bolting when the road wheel assembly or the idler wheel assembly is mounted to the down housing, and the corresponding bolts are used to pass along the axis through the axles in the corresponding assemblies and to secure the corresponding axles to the transition frame.

The left and right parts of the transition frame are respectively provided with a plurality of threaded holes 305 for installing bolts to fix the lower housing. The upper part of the upper shell is provided with a plurality of screw holes 104 respectively at left and right sides, the lower part is provided with a plurality of screw holes 105 respectively at left and right sides, and the screw holes 104 and the screw holes 105 are respectively used for penetrating screws and hydraulic bolts to fix the upper shell. The left and right portions of the lower housing are each provided with a plurality of bolt holes 204 for passing hydraulic bolts to secure the lower housing to the transition frame.

The upper and lower housings, which are generally combined into the same traveling case, have the same width in the left-right direction and the same thickness in the front-rear direction.

The upper shell can be formed by casting or welded by plates, and the lower shell can be formed by casting or welded by plates. For the high coal cutter traveling case, as a plurality of coal cutter traveling case components are combined into a complete coal cutter traveling case, the volume of a single component is obviously reduced compared with that of a traditional integral traveling case, and therefore, the plate welding forming is suitable, and compared with the casting forming, the production cost is reduced and the production period is shortened.

The invention also discloses a combined type coal cutter traveling box series, which is shown in fig. 5-7, and comprises coal cutter traveling boxes with three gears of high, medium and low, which are obtained by adopting the combined installation of the coal cutter traveling box components.

The coal cutter walking box with the low gear (see fig. 5a and 5 b) only adopts the upper shell 1, and a driving wheel assembly 4 and a walking wheel assembly 6 are respectively installed in a first shaft assembly installation hole and a second shaft assembly installation hole in the upper shell. The road wheel assembly 6 may be a single row road wheel assembly or a double row road wheel assembly. As shown in figure 8, the double-row walking wheel assembly is added with a large gear compared with the single-row walking wheel assembly, and the large gear and the walking wheels are coaxially arranged and synchronously rotate. The walking wheel is used for being meshed with the pin row. When the single-row traveling wheel assembly is installed, a driving wheel in the driving wheel assembly is externally meshed with a traveling wheel in the traveling wheel assembly; when the double-row traveling wheel assembly is installed, the driving wheels in the driving wheel assembly are externally meshed with the large gear.

The coal cutter walking box with the middle gear (see fig. 6a and 6 b) adopts the upper shell 1, the lower shell 2 and the transition frame 3 at the same time, wherein the lower shell adopts a lower shell only provided with one-to-one shaft assembly mounting holes, the driving wheel assembly 4 and the idler wheel assembly 501 are respectively mounted in the one-to-one shaft assembly mounting holes and the two-shaft assembly mounting holes in the upper shell, and the walking wheel assembly 6 is mounted in the one-to-one shaft assembly mounting hole in the lower shell. When the single-row road wheel assembly is installed, the idler wheel in the idler wheel assembly 501 is simultaneously meshed with the driving wheel in the driving wheel assembly and the road wheels in the road wheel assembly; when the dual row road wheel assembly is installed, the idler in idler assembly 501 is simultaneously in external engagement with the drive wheels in the drive wheel assembly and the bull gear in the road wheel assembly.

The coal cutter traveling box with high gear (see fig. 7a and 7 b) adopts the upper shell 1, the lower shell 2 and the transition frame 3 at the same time, wherein the lower shell adopts a lower shell provided with a pair of one-to-one shaft assembly mounting holes and a pair of two-shaft assembly mounting holes, the driving wheel assembly 4 and the first idler wheel assembly 502 are respectively mounted in the one-shaft assembly mounting holes and the two-shaft assembly mounting holes in the upper shell, and the second idler wheel assembly 503 and the traveling wheel assembly 6 are respectively mounted in the one-shaft assembly mounting holes and the two-shaft assembly mounting holes in the lower shell. The road wheel assembly 6 may be a single row road wheel assembly or a double row road wheel assembly. When the single-row traveling wheel assembly is installed, a driving wheel in the driving wheel assembly, a first idler wheel in the first idler wheel assembly, a second idler wheel in the second idler wheel assembly and traveling wheels in the traveling wheel assembly are sequentially meshed from top to bottom; when the double-row walking wheel assembly is installed, the driving wheel in the driving wheel assembly, the first idle wheel in the first idle wheel assembly, the second idle wheel in the second idle wheel assembly and the large gear in the walking wheel assembly are sequentially meshed from top to bottom.

The upper shell is detachably and fixedly connected to the rear end face of the traction part shell, the transition frame is detachably and fixedly connected to the lower side of the traction part shell, and the lower shell is detachably and fixedly connected to the rear end face of the transition frame.

The double-row travelling wheel assembly has the advantages that the stress condition of travelling wheels can be improved, the modulus of the driving wheel, the idler wheel and the large gear can be different from that of the travelling wheels (the modulus of the travelling wheels is nonstandard), when the pitch of the matched scraper machine is of another specification, only the travelling wheels of the other modulus are required to be replaced to adapt to the new pitch, and the driving wheel, the idler wheel and the large gear can not be changed, so that the transformation cost can be saved.

Further, the upper housing may be positioned to the traction housing through an outer side surface of a front side wall thereof and an upper housing round positioning spigot, and then fixed to the traction housing through a plurality of upper screws and a plurality of lower hydraulic bolts. The transition frame is positioned on the traction part shell through the top surface of the transition frame, the round positioning disc and the pin shaft 7 penetrating through the pin hole on the vertical plate, and is fixed at the bottom of the traction part shell through a plurality of screws. And positioning round holes and pin holes which are respectively used for being matched with the round positioning disc and the pin shaft 7 on the traction part shell are machined in advance. The lower shell is positioned on the transition frame through the outer side face of the front side wall and the round positioning spigot of the lower shell, and is fixed on the rear side end face of the transition frame through a plurality of screws.

The installation of the combined coal cutter traveling box series is described as follows:

1) When the height of the traveling box is not high in the supporting requirement of the coal mining machine, only the upper shell is adopted, at the moment, the upper shell is installed on the traction part shell, the upper shell is positioned through the two upper shell round positioning rabbets, and the upper shell is fixed in the front-rear direction through screws and hydraulic bolts. The driving wheel assembly 4 is installed at the position of a shaft assembly installation hole of the upper shell, and the walking wheel assembly 6 (comprising the guide sliding shoes) is pushed into the position of a two-shaft assembly installation hole at the position of an opening below the upper shell, so that the upper shell assembly is installed. The results are shown in FIG. 5.

2) When the height requirement of the walking box is improved, a shaft type lower shell can be additionally arranged, and the specific steps are as follows:

the upper housing 1 is installed as described above and then the drive wheel assembly 4 is installed into the upper housing. An idler wheel assembly is arranged at a two-shaft assembly mounting hole of the upper shell so as to replace the original walking wheel assembly. A transition frame 3 is then mounted under the traction portion and the lower housing is mounted on the transition frame in a similar manner to the upper housing. Finally, a walking wheel assembly (comprising a guide sliding shoe) 6 is pushed into the cavity of the lower shell at the opening of the lower shell, and a walking wheel set is fixed, so that the walking box shown in fig. 6 is obtained.

3) When the height requirement of the traveling case is higher, a biaxial lower case can be considered, and the installation method is basically the same as 2), except that a first idler gear assembly 502 is installed at the mounting hole of the biaxial component of the upper case, a second idler gear assembly 503 is installed at the mounting hole of the first shaft component of the lower case, and a traveling wheel assembly (including a guide shoe) 6 is installed at the mounting hole of the biaxial component, so that the traveling case shown in fig. 7 is obtained.

Further, a backing plate can be arranged between the coal cutter body and the walking box shell. In fig. 9, a pad 9 is disposed between the traction part housing and the upper housing, and when the walking box housing includes both the upper and lower housings, if an upper pad is disposed between the traction part housing and the upper housing, a lower pad should also be disposed between the transition frame and the lower housing. The upper backing plate and the lower backing plate have various thickness specifications, and the thicknesses of the upper backing plate and the lower backing plate are equal for the same traveling box combined by the traveling boxes of the coal mining machine with the middle and high gear heights. The size of the coal cutter body in the width direction can be adjusted by adding the backing plate between the traction part and the traveling box and arranging the backing plates with different thickness specifications so as to adapt to the scraper with different widths.

The term "forward" as used herein refers to the direction of the coal wall in the working state of the coal mining machine.

Claims (10)

1. The utility model provides a coal-winning machine walking case subassembly which characterized in that: the device comprises an upper shell, a lower shell and a transition frame, wherein the upper shell and the lower shell are of box structures with inner cavities penetrating up and down, the outer side surface of the front side wall of the upper shell is a mounting reference surface, an upper shell round positioning spigot and a lower upper shell round positioning spigot are arranged on the outer side surface of the front side wall of the upper shell, and a pair of shaft assembly mounting holes and a pair of two shaft assembly mounting holes are respectively formed in the front side wall and the rear side wall of the upper shell from top to bottom; the outer side surface of the front side wall of the lower shell is a mounting reference surface, an upper shell round positioning spigot and a lower shell round positioning spigot are arranged on the outer side surface of the front side wall of the lower shell, and meanwhile, a one-to-one shaft assembly mounting hole is only formed in the front side wall and the rear side wall of the lower shell, or a one-to-one shaft assembly mounting hole and a one-to-two shaft assembly mounting hole are respectively formed from top to bottom; the top surface of transition frame is the installation reference surface, and the top of transition frame is equipped with the round locating plate that the axis extends from top to bottom and is located two risers of round locating plate left and right sides, and locating plate and riser all upwards bulge in the top surface, are equipped with the pinhole that extends around and link up on the riser, and the rear side terminal surface of transition frame is the locating surface, is equipped with two upper and lower be used for with lower casing round locating spigot one-to-one and complex transition frame round locating spigot on it.

2. The shearer traveling case assembly of claim 1, wherein: the upper and lower upper shell round positioning rabbets are respectively coaxially arranged with a first shaft assembly mounting hole and a second shaft assembly mounting hole on the upper shell; when being equipped with one-to-one axle subassembly mounting hole and a pair of diaxon subassembly mounting hole on the lower casing, upper and lower two lower casing circle location tang set up with an axle subassembly mounting hole and diaxon subassembly mounting hole coaxial on the lower casing respectively, when only being equipped with one-to-one axle subassembly mounting hole on the lower casing, the lower casing circle location tang that is located the below sets up with an axle subassembly mounting hole coaxial on the lower casing.

3. The shearer traveling case assembly of claim 2, wherein: the upper shell round positioning spigot and the lower shell round positioning spigot are both convex spigot, and the transition frame round positioning spigot is a concave spigot.

4. A shearer traveling case assembly as claimed in claim 3, wherein: when the lower shell is provided with one-to-one shaft assembly mounting holes and one-to-two shaft assembly mounting holes, threaded holes coaxial with corresponding spigots are formed in the bottom surfaces of the upper transition frame round positioning spigots and the lower transition frame round positioning spigots, and when the lower shell is provided with only one-to-one shaft assembly mounting holes, threaded holes coaxial with corresponding spigots are formed in the bottom surfaces of the lower transition frame round positioning spigots.

5. The shearer traveling case assembly of claim 4, wherein: the left part and the right part of the transition frame are respectively provided with a plurality of threaded holes; the left and right sides of the upper part of the upper shell are respectively provided with a plurality of screw holes, and the left and right sides of the lower part of the upper shell are respectively provided with a plurality of screw holes; the left part and the right part of the lower shell are respectively provided with a plurality of bolt holes.

6. The shearer carriage assembly of claims 1, 2, 3, 4 or 5, wherein: the widths of the upper shell and the lower shell in the left-right direction are equal, and the thicknesses of the upper shell and the lower shell in the front-back direction are equal.

7. The shearer carriage assembly of claims 1, 2, 3, 4, 5 or 6, wherein: the upper shell is formed by casting or welded by plates, and the lower shell is formed by casting or welded by plates.

8. A combined coal cutter walking box series is characterized in that: the coal cutter walking box assembly comprises a coal cutter walking box with three gears of high, medium and low obtained by combined installation of the coal cutter walking box assemblies of claims 1, 2, 3, 4, 5, 6 or 7; the coal cutter walking box with the low gear is characterized in that the upper shell is only adopted, a driving wheel assembly is arranged at a first shaft assembly mounting hole in the upper shell, a single-row walking wheel assembly or a double-row walking wheel assembly is arranged at a second shaft assembly mounting hole, when the single-row walking wheel assembly is arranged, a driving wheel in the driving wheel assembly is externally meshed with a walking wheel in the walking wheel assembly, when the double-row walking wheel assembly is arranged, a driving wheel in the driving wheel assembly is externally meshed with a large gear in the walking wheel assembly, and the large gear in the walking wheel assembly and the walking wheel coaxially and synchronously rotate; the coal cutter walking box with the middle gear adopts the upper shell, the lower shell and the transition frame at the same time, wherein the lower shell adopts the lower shell only provided with one-to-one shaft assembly mounting holes, the driving wheel assembly and the idler wheel assembly are respectively mounted in the one-shaft assembly mounting holes and the two-shaft assembly mounting holes in the upper shell, the single-row walking wheel assembly or the double-row walking wheel assembly is mounted at the one-shaft assembly mounting holes in the lower shell, when the single-row walking wheel assembly is mounted, the idler wheel in the idler wheel assembly is simultaneously externally meshed with the driving wheel in the driving wheel assembly and the walking wheel in the walking wheel assembly, and when the double-row walking wheel assembly is mounted, the idler wheel in the idler wheel assembly is simultaneously externally meshed with the driving wheel in the driving wheel assembly and the large gear in the walking wheel assembly; the coal cutter walking box with the high gear adopts the upper shell, the lower shell and the transition frame at the same time, wherein the lower shell adopts a lower shell provided with a pair of axle assembly mounting holes and a pair of axle assembly mounting holes, a driving wheel assembly and a first idler wheel assembly are respectively arranged in the axle assembly mounting holes and the axle assembly mounting holes in the upper shell, a second idler wheel assembly and a walking wheel assembly are respectively arranged in the axle assembly mounting holes and the axle assembly mounting holes in the lower shell, the walking wheel assembly is a single row walking wheel assembly or a double row walking wheel assembly, when the single row walking wheel assembly is arranged, driving wheels in the driving wheel assembly, first idler wheels in the first idler wheel assembly, second idler wheels in the second idler wheel assembly and walking wheels in the walking wheel assembly are sequentially and externally meshed from top to bottom, and when the double row walking wheel assembly is arranged, driving wheels in the driving wheel assembly, first idler wheels in the first idler wheel assembly, second idler wheels in the second idler wheel assembly and big gears in the walking wheel assembly are sequentially and externally meshed from top to bottom; the upper shell is detachably and fixedly connected to the rear end face of the traction part shell; the transition frame is detachably and fixedly connected to the lower part of the traction part shell, and the lower shell is detachably and fixedly connected to the rear end face of the transition frame.

9. The combination shearer loader series of claim 8, wherein: the upper shell is positioned on the traction part shell through the outer side surface of the front side wall of the upper shell and the upper shell round positioning spigot; the transition frame is positioned on the traction part shell through the top surface of the transition frame, the round positioning disc and the pin shaft penetrating through the pin hole on the vertical plate, and the lower shell is positioned on the transition frame through the outer side surface of the front side wall of the lower shell and the round positioning spigot of the lower shell.

10. The combination shearer loader series of claim 9, wherein: an upper base plate is arranged between the traction part shell and the upper shell, a lower base plate is arranged between the transition frame and the lower shell, the upper base plate and the lower base plate have various thickness specifications, and the thicknesses of the upper base plate and the lower base plate are equal to each other for the traveling box of the coal mining machine with the height of middle and high gears.