CN210460653U - Two-stage rocker arm cutting device - Google Patents
Two-stage rocker arm cutting device Download PDFInfo
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- CN210460653U CN210460653U CN201921318010.4U CN201921318010U CN210460653U CN 210460653 U CN210460653 U CN 210460653U CN 201921318010 U CN201921318010 U CN 201921318010U CN 210460653 U CN210460653 U CN 210460653U
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Abstract
The utility model relates to a two-stage rocker arm cutting device, which comprises a one-stage big rocker arm, a two-stage small rocker arm and a pushing oil cylinder, wherein the one-stage big rocker arm is provided with a cutting motor, a big rocker arm transmission mechanism, a rocker arm rotary sleeve component and a rotary reducer, a rotary sleeve and a transmission shaft of the rocker arm rotary sleeve component are respectively and rotatably connected in the shell of the one-stage big rocker arm and an inner hole of the rotary sleeve, the cutting motor, the large rocker arm transmission mechanism, the transmission shaft, the small rocker arm transmission mechanism, the planetary mechanism and the cutting drum are sequentially connected and transmit power, a final gear of a rotary speed reducer is externally meshed with a rotary gear fixed on a rotary sleeve, one end of a shell of the first-stage large rocker arm and one end of a pushing oil cylinder are respectively hinged with a machine body of the coal mining machine, and the middle of the shell of the first-stage large rocker arm is hinged with the other end of the pushing oil cylinder. The utility model discloses can increase the height of adopting of shortwall coal-winning machine to solve the cutting problem of triangle coal under coal-winning machine head and the tail department.
Description
Technical Field
The utility model relates to a rocking arm cutting device, specially adapted adopt high shortwall greatly and combine the coal-winning machine of adopting the working face belongs to coal mining equipment technical field.
Background
In order to improve the overall economic benefit of a mine, the conventional short-wall working face mainly adopts a caving coal mining process, and the single-cutter mining thickness can reach 10-20 m. But the resource recovery rate of the top coal caving mining working face is only about 70 percent, and the recovery rate of mine resources is lower and is only about 50 percent. However, some mines do not have the mining conditions of top coal caving, such as the working face of "under building, under railway and under water", and are not suitable for top coal caving mining process in order to improve the production safety of mines and protect ecology. Therefore, the 'three-lower' coal mining currently mainly adopts a one-time mining full-height process.
A single-roller short-wall coal mining machine is coal mining equipment commonly used for a short-wall working face. The cutting device of the single-drum short-wall coal mining machine with the existing structure is a single rocker arm, and due to the integral structure, the length of the rocker arm can not be increased, the highest mining height is usually not more than 4m, and the high-yield and high-efficiency mining of a mine is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a doublestage rocking arm cutting device can increase the mining height of shortwall coal-winning machine.
The utility model discloses a main technical scheme has:
a double-stage rocker arm cutting device comprises a first-stage large rocker arm, a second-stage small rocker arm and a pushing oil cylinder, wherein a cutting motor, a large rocker arm transmission mechanism, a rocker arm rotating sleeve assembly and a rotating speed reducer are arranged on the first-stage large rocker arm, the rocker arm rotating sleeve assembly comprises a rotating sleeve and a transmission shaft, two ends of the rotating sleeve are supported in a shell of the first-stage large rocker arm through joint bearings, the transmission shaft is supported in an inner hole of the rotating sleeve through bearings, an output shaft of the cutting motor is coaxially connected with an input end of the large rocker arm transmission mechanism, an output end of the large rocker arm transmission mechanism is coaxially connected with one end of the near mining side of the transmission shaft, a final gear of the rotating speed reducer is externally meshed with a rotating gear fixed on the rotating sleeve, a small rocker arm transmission mechanism, a planetary mechanism and a cutting drum are arranged on the second-stage small rocker arm, one end of the near coal, the output end of the small rocker arm transmission mechanism is coaxially connected with the planetary mechanism, the cutting roller is coaxially sleeved on the planetary mechanism and located on the coal wall side of the shell of the second-stage small rocker arm, one end, close to the coal wall, of the rotary sleeve is exposed out of the shell of the first-stage large rocker arm, the end of the rotary sleeve is fixedly connected with the shell of the second-stage small rocker arm, one end of the shell of the first-stage large rocker arm and one end of the pushing oil cylinder are hinged to the body of the coal mining machine respectively, and the middle of the shell of the first-stage large rocker arm is hinged to the other end of the pushing oil cylinder.
The cutting motor, the rocker arm rotating sleeve assembly and the rotating speed reducer are sequentially and transversely arranged in the shell of the one-stage large rocker arm.
The large rocker arm transmission mechanism can adopt a gear transmission mechanism and is arranged at the mining side of the cutting motor and the rocker arm rotary sleeve component.
The small rocker arm transmission mechanism can adopt a plurality of groups of idle wheel assemblies which are sequentially meshed with one another, and the idle wheel assemblies are transversely arranged in the shell of the second-stage small rocker arm.
One end of the rotary sleeve, which is close to the coal wall, is suspended outside the shell of the primary large rocker arm, and the rotary gear is sleeved in the middle of the rotary sleeve through a spline structure.
The slewing reducer can comprise a motor, an integrated valve group, a brake and a reducer assembly, wherein the motor is coaxially connected to one end of the goaf side of the reducer assembly, the brake is arranged between the motor and the reducer assembly in a built-in mode, the integrated valve group is fixed to the end face of the motor through screws, and a final gear of the reducer assembly is a final gear of the slewing reducer.
The swing angle design value of the primary large rocker arm is preferably not less than 30 degrees.
The design value of the rotation range of the second-stage small rocker arm in both clockwise and anticlockwise directions is not less than 360 degrees.
The utility model has the advantages that:
the utility model provides a doublestage rocking arm cutting device is a brand-new combination formula rocking arm structure, and through the propulsion volume of adjustment promotion hydro-cylinder piston rod, the position and the height of the big rocking arm of one-level can be controlled, through adjusting slewing reducer's angle of revolution, the position and the height of the little rocking arm of steerable second grade, consequently through the swing angle of this cutting device of combination formula adjustment, can realize cutting device's height of adopting maximize, effectively solve the not enough problem of height of adopting in the shortwall coal-winning machine design. Because the mining height of the coal mining machine can be greatly improved, powerful basic conditions are created for realizing high yield and high efficiency of the mine from the equipment.
The utility model discloses specially adapted single drum shortwall coal-winning machine also can be applicable to double drum coal-winning machine.
The second-stage small rocker arm can rotate 360 degrees clockwise or anticlockwise, so that the cutting drum can be positioned at a higher position, the coal mining height of the coal mining machine is greatly improved, and the cutting drum can be positioned at a sufficiently low position, so that the problem of cut-through of lower triangular coal at the head and the tail of the coal mining machine is solved.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic structural view of the rocker arm swivel sleeve assembly;
FIG. 4 is a schematic structural diagram of the slewing gear reducer;
FIG. 5 is a schematic diagram of the internal structure of the two-stage small rocker arm in FIG. 1;
FIG. 6 is a schematic view of the cutting apparatus of FIG. 1 in a state in which the drum is at the uppermost position;
fig. 7 is a schematic view of the cutting apparatus of fig. 1 in a state in which the drum is at the lowest position.
Reference numerals:
1. a first-stage large rocker arm; 113. a rocker arm swivel sleeve assembly; 1131. a rotary sleeve; 1132. a drive shaft; 1133. a rotary gear; 1134. a knuckle bearing; 114. a slewing reducer; 1141. a motor; 1142. an integrated valve bank; 1143. a brake; 1144. a retarder assembly; 1145. a final stage gear;
2. a second-stage small rocker arm; 211. a small rocker arm transmission mechanism; 212. a planetary mechanism; 213. a cutting drum;
3. the oil cylinder is pushed.
Detailed Description
The utility model discloses a two-stage rocker arm cutting device, as shown in figures 1-7, comprising a one-stage big rocker arm 1, a two-stage small rocker arm 2 and a pushing oil cylinder 3. And a cutting motor, a large rocker arm transmission mechanism, a rocker arm rotary sleeve component 113 and a rotary speed reducer 114 are arranged on the first-stage large rocker arm. The rocker arm rotating sleeve assembly comprises a rotating sleeve 1131 and a transmission shaft 1132, the rotating sleeve is rotatably connected in the shell of the one-level large rocker arm, the transmission shaft is rotatably connected in an inner hole of the rotating sleeve, specifically, two ends of the rotating sleeve can be supported in the shell of the one-level large rocker arm through a joint bearing 1134, and the transmission shaft is supported in the inner hole of the rotating sleeve through a bearing.
An output shaft of the cutting motor is coaxially connected with an input end of a large rocker arm transmission mechanism, an output end of the large rocker arm transmission mechanism is coaxially connected with one end, close to the mining side, of the transmission shaft 1132, and a final gear 1145 of the rotary speed reducer is externally meshed with a rotary gear 1133 fixed on the rotary sleeve 1131.
The two-stage small rocker arm is provided with a small rocker arm transmission mechanism 211, a planetary mechanism 212 and a cutting drum 213, one end of the transmission shaft 1132, close to the coal wall side, is coaxially connected with the input end of the small rocker arm transmission mechanism, the output end of the small rocker arm transmission mechanism is coaxially connected with the planetary mechanism 212, and the cutting drum 213 is coaxially sleeved on the planetary mechanism and is positioned on the coal wall side of the shell of the two-stage small rocker arm. One end of the rotary sleeve 1131, close to the coal wall, is exposed out of the shell of the first-stage large rocker arm, and is fixedly connected with the shell of the second-stage small rocker arm through pin positioning and screw fastening, and the second-stage small rocker arm can rotate clockwise or anticlockwise by 360 degrees along with the rotary sleeve.
One end of the shell of the first-stage large rocker arm and one end of the pushing oil cylinder are hinged with the body of the coal mining machine respectively, the middle of the shell of the first-stage large rocker arm is hinged with the other end of the pushing oil cylinder, and the first-stage large rocker arm can swing within a small angle range under the driving of the pushing oil cylinder. Through the oscillating position of the big rocking arm of adjustment one-level and the little rocking arm of second grade, can realize the utility model discloses a cutting device's altitude mixture control satisfies the bottom of a bed requirement of triangle coal under the biggest height of adopting and aircraft nose tail department simultaneously.
The cutting motor, the rocker arm rotary sleeve assembly 113 and the rotary speed reducer 114 are sequentially and transversely arranged in the shell of the primary large rocker arm. In this embodiment, the rocker arm rotation sleeve assembly 113 is disposed in the middle of the housing of the first-stage large rocker arm, the cutting motor is disposed on the right side of the rocker arm rotation sleeve assembly, and the rotation reducer is disposed on the left side of the rocker arm rotation sleeve assembly. The right end of the shell of the primary large rocker arm is hinged with the machine body.
The large rocker arm transmission mechanism can adopt a gear transmission mechanism and is integrally arranged at the mining side of the cutting motor and the rocker arm rotary sleeve component. The large rocker arm transmission mechanism is arranged in a shell of the first-stage large rocker arm, and a cavity in which the large rocker arm transmission mechanism is arranged can be called a small gear box. In this embodiment, the large rocker arm transmission mechanism adopts a primary straight tooth transmission speed reduction mechanism.
The high-speed end of the large rocker arm transmission mechanism is the input end of the large rocker arm transmission mechanism, and the high-speed end is preferably connected with the output shaft of the cutting motor through a spline structure. The low-speed end of the large rocker arm transmission mechanism is the output end thereof, and the end is preferably connected with the transmission shaft 1132 through a spline structure. For a transmission mechanism adopting gear transmission, the high-speed end and the low-speed end of the large rocker arm transmission mechanism are both gears and can be respectively called as an input gear and an output gear. The input gear and the output gear are respectively coaxially provided with spline holes and are respectively matched with a spline shaft section of an output shaft of the cutting motor and a spline shaft section on the goaf side of the transmission shaft.
The small rocker arm transmission mechanism 211 also adopts a gear transmission mechanism. The input end and the output end of the small rocker arm transmission mechanism are gears which can be called as a high-speed gear and a low-speed gear respectively. In fact, the transmission ratio of the small rocker arm transmission mechanism can also be 1. And a spline hole is coaxially arranged on a high-speed gear of the small rocker arm transmission mechanism and matched with a spline shaft section on the coal wall side of the transmission shaft.
In this embodiment, the small rocker arm transmission mechanism is composed of a plurality of sets of idler wheel assemblies which are sequentially and externally engaged, and the sets of idler wheel assemblies are transversely arranged in the shell of the second-stage small rocker arm. The length of the second-level small rocker arm can be adjusted by increasing or decreasing the number of the idler wheel assemblies so as to meet the requirements of different mining heights and bedding quantities. In addition, the effective length of the secondary small rocker arm can be adjusted by changing the diameter of the cutting drum.
In this embodiment, one end of the rotary sleeve near the coal wall is suspended outside the housing of the first-stage large rocker arm. The rotary gear 1133 is sleeved in the middle of the rotary sleeve through a spline structure. The rotation gear 1133 rotates to drive the rotation sleeve to rotate, and the rotation sleeve is fixedly connected with the shell of the second-stage small rocker arm into a whole, so that the second-stage small rocker arm also rotates synchronously.
The slew drive includes a motor 1141, an integrated valve stack 1142, a brake 1143, and a drive assembly 1144. The motor 1141 is coaxially connected to one end of the goaf side of the reducer assembly 1144 through a rectangular spline structure. The brake is interposed between the motor and the reducer assembly. The integrated valve group is fixed on the end face of the motor through screws. The final gear of the speed reducer assembly is the final gear of the rotary speed reducer.
Under the telescopic driving of the pushing oil cylinder, the primary large rocker arm swings in a vertical plane. The design value of the swing angle of the first-stage large rocker arm is not less than 30 degrees.
The speed reducer assembly can rotate in the whole circumference in two directions, the design value of the rotation range of the second-stage small rocker arm in the clockwise direction and the anticlockwise direction is not less than 360 degrees, so that the cutting drum can reach a very high position and a very low position, the coal mining height can be improved, and the problem of cut-through of lower triangular coal at the head and the tail of the coal mining machine can be also considered.
In this embodiment, one end of the casing of the first-stage large rocker arm is preferably hinged to the top surface of the body of the coal mining machine, the first-stage large rocker arm is located right above the body, and one end of the pushing cylinder is hinged to the hinge lug seat on the top surface of the body. The push oil cylinder is preferably arranged on the coal wall side of the machine body.
The utility model discloses a cut realization process of coal function does:
the cutting motor starts to work, power is transmitted to a transmission shaft 1132 of the rocker arm rotating sleeve assembly through the large rocker arm transmission mechanism, then is transmitted to the small rocker arm transmission mechanism 211 through the transmission shaft, and finally is transmitted to the cutting drum 213 through the transmission of the planetary mechanism 212, so that the coal cutting function of the drum is realized.
The utility model discloses a cutting drum's altitude mixture control implementation process does:
and introducing high-pressure oil into the pushing oil cylinder 3, extending the piston rod, starting the swinging of the first-stage large rocker arm, and raising the first-stage large rocker arm to the maximum height when the piston rod is completely extended. The motor 1141 is filled with high-pressure oil, the built-in brake 1143 is released, the speed reducer assembly 1144 starts to rotate, the final gear of the speed reducer assembly drives the rotary sleeve of the rocker arm rotary sleeve assembly of the first-stage large rocker arm to swing, and the rotary sleeve and the second-stage small rocker arm are fixed into a whole through the screw and the fixing pin, so that the second-stage small rocker arm and the rotary sleeve synchronously swing. When the second-level small rocker arm swings upwards to form 90 degrees with the horizontal plane, as shown in fig. 6, the cutting drum rises to the maximum height, thereby realizing the maximum mining height of the cutting device.
When the piston rod of the pushing oil cylinder is completely retracted, the first-stage large rocker arm is lowered to the lowest height, and the second-stage small rocker arm swings downwards to form an angle of 90 degrees with the horizontal plane, as shown in fig. 7, the cutting drum is lowered to the lowest height.
Claims (10)
1. The utility model provides a doublestage rocking arm cutting device which characterized in that: the coal mining machine comprises a first-stage large rocker arm, a second-stage small rocker arm and a pushing oil cylinder, wherein a cutting motor, a large rocker arm transmission mechanism, a rocker arm rotary sleeve assembly and a rotary speed reducer are arranged on the first-stage large rocker arm, the rocker arm rotary sleeve assembly comprises a rotary sleeve and a transmission shaft, two ends of the rotary sleeve are supported in a shell of the first-stage large rocker arm through joint bearings, the transmission shaft is supported in an inner hole of the rotary sleeve through bearings, an output shaft of the cutting motor is coaxially connected with the input end of the large rocker arm transmission mechanism, the output end of the large rocker arm transmission mechanism is coaxially connected with one end of the near mining side of the transmission shaft, a final gear of the rotary speed reducer is externally meshed with a rotary gear fixed on the rotary sleeve, a small rocker arm transmission mechanism, a planetary mechanism and a cutting drum are arranged on the second-stage small rocker arm, one end, the output end of the small rocker arm transmission mechanism is coaxially connected with the planetary mechanism, the cutting roller is coaxially sleeved on the planetary mechanism and located on the coal wall side of the shell of the second-stage small rocker arm, one end, close to the coal wall, of the rotary sleeve is exposed out of the shell of the first-stage large rocker arm, the end of the rotary sleeve is fixedly connected with the shell of the second-stage small rocker arm, one end of the shell of the first-stage large rocker arm and one end of the pushing oil cylinder are hinged to the body of the coal mining machine respectively, and the middle of the shell of the first-stage large rocker arm is hinged to the other end of the pushing oil cylinder.
2. The dual stage rocker arm cutting apparatus of claim 1, wherein: the cutting motor, the rocker arm rotating sleeve assembly and the rotating speed reducer are sequentially and transversely arranged in the shell of the one-stage large rocker arm.
3. The dual stage rocker arm cutting apparatus of claim 2, wherein: the large rocker arm transmission mechanism adopts a gear transmission mechanism and is arranged at the mining side of the cutting motor and the rocker arm rotary sleeve component.
4. The dual stage rocker arm cutting apparatus of claim 3, wherein: the high-speed end of the large rocker arm transmission mechanism is an input end and is connected with the output shaft of the cutting motor through a spline structure, and the low-speed end of the large rocker arm transmission mechanism is an output end and is connected with the transmission shaft through a spline structure.
5. The dual stage rocker arm cutting apparatus of claim 4, wherein: the small rocker arm transmission mechanism adopts a plurality of groups of idle wheel assemblies which are sequentially externally meshed and are transversely arranged in the shell of the second-stage small rocker arm.
6. The dual stage rocker arm cutting apparatus of claim 5, wherein: one end of the rotary sleeve, which is close to the coal wall, is suspended outside the shell of the primary large rocker arm, and the rotary gear is sleeved in the middle of the rotary sleeve through a spline structure.
7. The dual stage rocker arm cutting apparatus of claim 6, wherein: the pushing oil cylinder is arranged on the coal wall side of the machine body.
8. The dual stage rocker arm cutting apparatus of claims 1, 2, 3, 4, 5, 6, or 7, wherein: the slewing reducer comprises a motor, an integrated valve group, a brake and a reducer assembly, wherein the motor is coaxially connected to one end of a goaf side of the reducer assembly, the brake is arranged between the motor and the reducer assembly in a built-in mode, the integrated valve group is fixed to the end face of the motor through screws, and a final gear of the reducer assembly is a final gear of the slewing reducer.
9. The dual stage rocker arm cutting apparatus of claim 8, wherein: the design value of the swing angle of the first-stage large rocker arm is not less than 30 degrees.
10. The dual stage rocker arm cutting apparatus of claim 9, wherein: the design value of the rotation range of the second-stage small rocker arm in both clockwise and anticlockwise directions is not less than 360 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921318010.4U CN210460653U (en) | 2019-08-15 | 2019-08-15 | Two-stage rocker arm cutting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921318010.4U CN210460653U (en) | 2019-08-15 | 2019-08-15 | Two-stage rocker arm cutting device |
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| CN210460653U true CN210460653U (en) | 2020-05-05 |
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| CN201921318010.4U Active CN210460653U (en) | 2019-08-15 | 2019-08-15 | Two-stage rocker arm cutting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424959A (en) * | 2019-08-15 | 2019-11-08 | 天地科技股份有限公司上海分公司 | Twin-stage rocker arm cutting means |
| CN113738355A (en) * | 2021-09-06 | 2021-12-03 | 中国矿业大学 | Thin coal seam mining robot |
-
2019
- 2019-08-15 CN CN201921318010.4U patent/CN210460653U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424959A (en) * | 2019-08-15 | 2019-11-08 | 天地科技股份有限公司上海分公司 | Twin-stage rocker arm cutting means |
| CN110424959B (en) * | 2019-08-15 | 2024-04-02 | 天地科技股份有限公司上海分公司 | Double-stage rocker arm cutting device |
| CN113738355A (en) * | 2021-09-06 | 2021-12-03 | 中国矿业大学 | Thin coal seam mining robot |
| CN113738355B (en) * | 2021-09-06 | 2022-08-05 | 国科中迈(徐州)能源科技有限公司 | Thin coal seam mining robot |
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