CN114233292A - Front main body shell of short-span coal mining machine for thin coal seam - Google Patents
Front main body shell of short-span coal mining machine for thin coal seam Download PDFInfo
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- CN114233292A CN114233292A CN202210045789.7A CN202210045789A CN114233292A CN 114233292 A CN114233292 A CN 114233292A CN 202210045789 A CN202210045789 A CN 202210045789A CN 114233292 A CN114233292 A CN 114233292A
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- main body
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- 239000003245 coal Substances 0.000 title claims abstract description 34
- 238000005065 mining Methods 0.000 title abstract description 27
- 230000005484 gravity Effects 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000004904 shortening Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 12
- 238000009434 installation Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention relates to a front main body part shell of a short-span coal mining machine for a thin coal seam, wherein the left end and the right end of the lower part of the front main body part shell are respectively provided with a pair of coaxial oil cylinder inner pin holes with axes extending forwards and backwards, the left end and the right end of the upper part of the front main body part shell are respectively provided with a first lug seat, a second lug seat and a connecting base which extend towards the left outer side and the right outer side, the first lug seat, the second lug seat and the connecting base are arranged at intervals from front to back, a front groove is formed between the first lug seat and the second lug seat, a rear groove is formed between the second lug seat and the connecting base, the left group of first lug seat and the right group of second lug seat are respectively provided with a first lug hole and a second lug hole which are used for hinging a left rocker arm and a right rocker arm, and the rear part of the first lug hole, the front part of the second lug hole and the rear part of the second lug hole are respectively provided with a first circular concave spigot, a second concave spigot and a third circular spigot which are coaxial and used for radially positioning and mounting a cutting motor. The invention can provide a larger mining range and a larger cutting power, and is also beneficial to shortening the machine body and improving the gravity center problem of the coal mining machine.
Description
Technical Field
The invention relates to a local body structure of a coal mining machine, which is suitable for a thin coal seam coal mining machine and can be matched with a rocker arm with a specific structure to obtain a larger mining range and improve the gravity center problem of the coal mining machine.
Background
The general structure of the upper suspension body section and the rocker arm part of the existing thin seam coal mining machine is complex, and some problems are correspondingly accompanied. For example, the rocker arm is usually provided with an independent cutting motor, so that the rocker arm is long, and meanwhile, the motor barrel affects the upward swinging of the rocker arm, so that the mining height adaptability is insufficient, and for example, the body section between the left roller and the right roller is long in longitudinal dimension and heavy due to the installation of an open oil cylinder and the like, so that the gravity center of the coal mining machine deviates to the coal wall, and the problems of overlarge abrasion of parts such as running stability and sliding shoes are brought, and the performance of the whole machine is seriously affected.
In order to solve the problems, the industry proposes that the cutting part is a swinging part and a fixed part, and the cutting motor and the main body of the cutting transmission system are arranged on the fixed part, so that the structure of the fixed part is too complex, the left and right lengths of the hanging-out section of the machine body are too long, the weight is too large, and the influence of the gravity center problem of the whole machine on the stress of the whole machine is still large.
Disclosure of Invention
The invention aims to provide a front main body part shell of a short-span coal mining machine for a thin coal seam, which can provide a larger mining range and a larger cutting power, is also beneficial to shortening the machine body and improving the gravity center problem of the coal mining machine.
The main technical scheme of the invention is as follows:
a pair of coaxial oil cylinder inner pin holes extending front and back are respectively arranged at the left end and the right end of the lower portion of a shell of a short-span coal mining machine, a first lug seat, a second lug seat and a connecting base extending towards the left side and the right side are respectively arranged at the left end and the right end of the upper portion of the shell, the first lug seat, the second lug seat and the connecting base are arranged at intervals from front to back, a front groove is formed between the first lug seat and the second lug seat, a rear groove is formed between the second lug seat and the connecting base, a first lug hole and a second lug hole for hinging a left rocker arm and a right rocker arm are respectively arranged on the left group of first lug seat and the right group of second lug seat, and a first circular concave spigot, a second circular spigot and a third circular spigot which are coaxial and used for radially positioning and mounting a cutting motor are respectively arranged at the rear portion of the first lug hole, the front portion of the second lug hole and the rear portion of the second lug hole.
The diameter of the first circular female seam allowance is preferably larger than the diameters of the second circular female seam allowance and the third circular female seam allowance.
The groove bottom surfaces of the front groove and the rear groove are arranged into a first group of concave arc cylindrical surfaces which are coaxial with the first circular concave spigot.
The outer surface of the overhanging end of the first ear seat and the outer surface of the overhanging end of the second ear seat are arranged into a first group of convex arc cylindrical surfaces which are coaxial with the first circular concave spigot.
The rear groove is a stepped groove, and the bottom surface of the rear groove is provided with two sections of concave arc cylindrical surfaces with a larger front part and a smaller rear part.
The shell of the front main body part of the short-span coal mining machine for the thin coal seam is of a multi-cavity thin-wall frame structure.
The inner spaces of the left and right first lug seats are communicated left and right, a thin-wall box-shaped structure with an open front end is formed at the front part of the shell of the front main body part, and the first circular female spigot is positioned on a box bottom plate of the box-shaped structure.
The open front end of the box-shaped structure is also provided with a cover plate.
The area between the left front groove and the right front groove and between the left second lug seat and the right second lug seat is provided with a front channel and a hydraulic cavity, the front channel is positioned above the hydraulic cavity, the area between the left rear groove and the right rear groove is provided with a rear channel, and the front channel, the rear channel and the hydraulic cavity respectively form a cavity.
And the left side and the right side of the rear end surface of the connecting base are respectively provided with a positioning pin hole.
The invention has the beneficial effects that:
the front main body shell of the invention is used as a part of a coal mining machine body and is used for connecting a left swinging arm and a right swinging arm. Through setting up first, second ear seat and first to third circular concave rabbet, realized using the cutting motor to articulate two swing arms about connecting as articulated round pin axle, obviously shortened the length about the coal-winning machine hangs the fuselage section and the span of controlling two cylinders, be favorable to alleviateing the weight of hanging the fuselage section, finally impel the fuselage focus to move backward, improve complete machine stability.
The interior of the invention is set to be a compact and short multi-chamber structure, thereby greatly reducing the weight of the suspension section of the coal mining machine and further providing guarantee for the gravity center of the whole machine to be close to the mining side.
The front main body part shell of the coal mining machine can be hinged with a swing arm on the left and right, each swing arm corresponds to a cutting motor, when the front main body part shell is used for the coal mining machine, the integral cutting power of the coal mining machine is larger than that of a single motor, the continuous power consumption of cutting hard materials by the single motor can be reduced during bidirectional mining, two motors are respectively used for main and auxiliary power consumption operation on the left and right, the integral reliability of the power of the cutting mechanism is favorably improved, and particularly, the effect is more obvious when the hard materials are cut.
The pin hole in the oil cylinder, which is positioned at the lower part of the main body part shell and close to the front end, is used for realizing the hinging of the heightening oil cylinder and the front main body part shell, the arrangement of the heightening oil cylinder below the cutting motor is realized, the length of the hanging machine body section in the left and right directions is greatly shortened, the distance between two rollers is shortened for a double-roller coal mining machine, and the space between a top plate and a bottom plate of a coal mining working face is fully utilized.
The outer surfaces of the overhanging ends of the first lug seat and the second lug seat and the groove bottoms of the front groove and the rear groove are set to be an outer convex arc cylindrical surface and an inner concave arc cylindrical surface which are coaxial with the first circular concave spigot, so that the outer surfaces of the first lug seat and the second lug seat are matched with the corresponding hinged lug seat structure surface on the swing arm, and as long as the proper size of the gap between the paired surfaces is well controlled, the swing arm can be ensured to swing freely relative to the front main body part shell, and the situation that the swing angle is influenced due to blocking caused by stacking coal rocks between the paired surfaces in the swing process can be prevented.
The box-shaped structure formed by left and right communication of the inner spaces of the left and right first ear seats can be used as a motor wiring installation cavity and can also be used as an installation connection cavity of a filter, a valve bank, a pipeline and the like, and a clean working environment is provided for the motor, the pipeline and the like under the sealing action of the cover plate.
Drawings
FIG. 1 is a front view of one embodiment of the present invention;
fig. 2 is a top cross-sectional view of fig. 1.
Reference numerals:
21. a front body section case; 211. a first ear mount; 2111. a first circular female spigot; 2112. an inner chamber of box-like construction; 2113. a cover plate; 2115. the outer surface of the overhanging end of the first ear mount; 2121. a front groove; 213. a second ear mount; 2131. a second circular female spigot; 2132. a third circular female spigot; 2133. the outer surface of the overhanging end of the second ear mount; 2141. a larger diameter groove; 2142. a smaller diameter groove; 215. a connection base; 2151. a rear end face; 2152. a positioning pin hole; 2153. bolt holes; 216. a hydraulic chamber; 2161. a filter mounting hole; 2171. a front channel; 2172. a back channel; 218. an inner pin hole of the oil cylinder.
Detailed Description
The invention discloses a front main body part shell 21 (which can be called as a front main body part shell for short) of a short-span coal mining machine for a thin coal seam, as shown in figures 1 and 2, the left end and the right end of the lower part of the shell are respectively provided with a pair of coaxial cylinder inner pin holes 218 extending from front to back along the axial line, the left end and the right end of the upper part of the shell are respectively provided with a first lug seat 211, a second lug seat 213 and a connecting base 215 extending towards the left side and the right side, and the first lug seat, the second lug seat and the connecting base are arranged at intervals from front to back. A front groove 2121 is formed between the first ear seat and the second ear seat, and a rear groove is formed between the second ear seat and the connection base. The left and right groups of first lug seats and the second lug seats are respectively provided with a first lug hole and a second lug hole which are used for hinging the left and right rocker arms, and the rear parts of the first lug hole, the front part of the second lug hole and the rear part of the second lug hole are respectively provided with a first circular concave spigot 2111, a second circular concave spigot 2131 and a third circular concave spigot 2132 which are coaxial and used for radially positioning and installing a cutting motor. The purpose of setting up first, second ear seat and first to third circular concave rabbet is two swing arms about articulated connection, and regards the cutting motor as articulated round pin axle, can obviously shorten the length about preceding main part casing, just also be equivalent to having shortened the length about coal-winning machine hangs the fuselage section, be favorable to alleviateing the weight of hanging the fuselage section, finally impel the fuselage focus to move backward, improve complete machine stability.
The cylinder inner pin hole is preferably disposed at a position near the front end. The pin hole in the oil cylinder is right opposite to the pin hole outside the oil cylinder arranged on the swing arm shell. The inner pin hole and the outer pin hole of the oil cylinder are respectively used for being hinged with the inner end and the outer end of the height-adjusting oil cylinder. The heightening oil cylinder stretches and retracts to drive the swing arm to swing up and down around the front main body part shell.
The diameter of the first circular concave spigot is preferably larger than the diameters of the second circular concave spigot and the third circular concave spigot, so that the cutting motor can be conveniently installed.
The first circular concave seam allowance and the second circular concave seam allowance play a main supporting role for the cutting motor, and the third circular concave seam allowance plays an auxiliary supporting role for the cutting motor.
The groove bottom surfaces of the front groove and the rear groove are arranged into a first group of concave arc cylindrical surfaces (containing multiple sections of concave arc cylindrical surfaces), and the first group of concave arc cylindrical surfaces are coaxial with the first circular concave spigot. The front and rear recesses are used to accommodate the front arm of the swing arm housing and the high speed end of the arm support, respectively. Appropriate gaps are kept between the front groove and the front arm and between the rear groove and the high-speed end of the arm support, so that the free swing of the swing arm relative to the shell of the front main body part is guaranteed, and coal rocks can be prevented from entering the space between the swing arm and the front main body part to cause blocking.
The overhanging end outer surface 2115 of the first ear seat and the overhanging end outer surface 2133 of the second ear seat are arranged into a first group of convex arc cylindrical surfaces (which contain multiple sections of convex arc cylindrical surfaces), and the first group of convex arc cylindrical surfaces are coaxial with the first circular concave spigot. The outer surfaces of the overhanging ends of the first lug seat and the second lug seat are coaxial with corresponding surfaces on the swing arm respectively and keep equal intervals, and as long as the intervals are kept to be proper, on one hand, the swing arm is guaranteed to swing freely relative to the shell of the front main body part, and coal rocks can be prevented from entering between the swing arm and the front main body part to cause blocking.
In the embodiment shown in the attached drawings, the rear groove is a stepped groove, and the bottom surface of the rear groove is provided with two sections of concave arc cylindrical surfaces with a larger front part and a smaller rear part. Wherein the larger diameter channel 2141 is adapted to receive the forward portion of the high speed end of the boom and the smaller diameter channel 2142 is adapted to receive the rearward portion of the high speed end of the boom. Correspondingly, the outer surface of the high-speed end of the arm support is also provided with a step shape.
The front body shell is preferably a multi-chamber thin-walled frame structure, thereby reducing its weight and helping to facilitate further rearward shifting of the center of gravity of the shearer body.
The inner spaces of the left and right first lug seats are communicated left and right, a thin-wall box-shaped structure with an open front end is formed at the front part of the shell of the front main body part, and the first circular female spigot is positioned on a box bottom plate of the box-shaped structure. After the left and right swing arms are installed and connected, the front parts of the left and right cutting motors are both positioned in the inner cavity 2112 of the box-shaped structure.
A cover plate 2113 is preferably mounted at the open front end of the box-shaped structure to close the interior of the box-shaped structure to keep the space in which the cutting motor is located clean.
The area between the two front left and right grooves and between the two second left and right lugs is provided with a front channel 2171 located above the hydraulic chamber and a hydraulic chamber 216, and the area between the two rear left and right grooves is provided with a rear channel 2172, the front channel, the rear channel and the hydraulic chamber each being one chamber. The hydraulic chamber forms a self-enclosed chamber in which hydraulic oil is contained and a filter is also installed, and 2161 is a filter installation hole. The front channel is communicated with the rear channel, the front channel and the rear channel are mainly used as distribution channels of a motor cable, a small electromagnetic valve cable, a water pipe, a hydraulic cavity oil pipe and the like, the front channel is communicated with an inner cavity 2112 of the box-shaped structure, and the rear channel penetrates through the front main body shell backwards.
The rear end face of the connecting base is provided with a positioning pin hole 2152 on the left and right, and the rear end face 2151 of the connecting base and the positioning pin holes are positioning structures used for fixedly connecting the front main body part shell and the rear main body part shell together. The front and rear body housings are fastened together by bolts inserted through the bolt holes 2153.
The front and back as used herein refers to the direction toward and away from the coal wall, respectively, unless specifically indicated otherwise.
Claims (10)
1. The utility model provides a main part casing before short-span coal-winning machine of thin seam which characterized in that: the left end and the right end of the lower part of the hydraulic cutting machine are respectively provided with a pair of coaxial oil cylinder inner pin holes with axes extending forwards and backwards, the left end and the right end of the upper part of the hydraulic cutting machine are respectively provided with a first ear seat, a second ear seat and a connecting base which extend towards the left side and the right side, the first ear seat, the second ear seat and the connecting base are arranged at intervals from front to back, a front groove is formed between the first ear seat and the second ear seat, a rear groove is formed between the second ear seat and the connecting base, a first ear hole and a second ear hole which are used for being hinged with a left rocker arm and a right rocker arm are respectively arranged on the left ear seat and the right ear seat, and a first circular concave spigot, a second circular concave spigot and a third circular concave spigot which are coaxial and used for radially positioning and installing a cutting motor are respectively arranged at the rear part of the first ear hole, the front part of the second ear hole and the rear part of the second ear hole.
2. The front main body housing of the short-span shearer loader for thin seams as claimed in claim 1, wherein: the diameter of the first circular concave spigot is larger than the diameter of the second circular concave spigot and the third circular concave spigot.
3. The front main body housing of the short-span shearer loader for thin seams as claimed in claim 2, wherein: the groove bottom surfaces of the front groove and the rear groove are arranged into a first group of concave arc cylindrical surfaces which are coaxial with the first circular concave spigot.
4. The front main body housing of the short-span shearer loader for thin seams as claimed in claim 3, wherein: the outer surface of the overhanging end of the first ear seat and the outer surface of the overhanging end of the second ear seat are arranged into a first group of convex arc cylindrical surfaces which are coaxial with the first circular concave spigot.
5. The front main body part shell of the low seam short-span shearer loader according to claim 4, wherein: the rear groove is a stepped groove, and the bottom surface of the rear groove is provided with two sections of concave arc cylindrical surfaces with a larger front part and a smaller rear part.
6. The front main body part shell of the short-span shearer loader for thin coal seams as claimed in claim 1, 2, 3, 4 or 5, wherein: it is a multi-chamber thin-wall frame structure.
7. The front main body housing of the short-span shearer loader for thin seams as claimed in claim 6, wherein: the inner spaces of the left and right first lug seats are communicated left and right, a thin-wall box-shaped structure with an open front end is formed at the front part of the shell of the front main body part, and the first circular female spigot is positioned on a box bottom plate of the box-shaped structure.
8. The front body section casing of the short-span shearer loader for thin seams as claimed in claim 7, wherein: the open front end of the box-shaped structure is provided with a cover plate.
9. The front main body housing of the short-span shearer loader for thin seams as claimed in claim 6, wherein: the area between the left front groove and the right front groove and between the left second lug seat and the right second lug seat is provided with a front channel and a hydraulic cavity, the front channel is positioned above the hydraulic cavity, the area between the left rear groove and the right rear groove is provided with a rear channel, and the front channel, the rear channel and the hydraulic cavity respectively form a cavity.
10. The front main body housing of the short-span shearer loader for thin seams as claimed in claim 6, wherein: and the left side and the right side of the rear end surface of the connecting base are respectively provided with a positioning pin hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210045789.7A CN114233292A (en) | 2022-01-16 | 2022-01-16 | Front main body shell of short-span coal mining machine for thin coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210045789.7A CN114233292A (en) | 2022-01-16 | 2022-01-16 | Front main body shell of short-span coal mining machine for thin coal seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114233292A true CN114233292A (en) | 2022-03-25 |
Family
ID=80746573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210045789.7A Pending CN114233292A (en) | 2022-01-16 | 2022-01-16 | Front main body shell of short-span coal mining machine for thin coal seam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114233292A (en) |
-
2022
- 2022-01-16 CN CN202210045789.7A patent/CN114233292A/en active Pending
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