CN218407421U - Rocker arm of super-thick coal seam mining machine - Google Patents
Rocker arm of super-thick coal seam mining machine Download PDFInfo
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- CN218407421U CN218407421U CN202221870363.7U CN202221870363U CN218407421U CN 218407421 U CN218407421 U CN 218407421U CN 202221870363 U CN202221870363 U CN 202221870363U CN 218407421 U CN218407421 U CN 218407421U
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Abstract
The utility model relates to a super thick coal seam coal-winning machine rocking arm, including dismantling casing and the transition frame that fixed connection is in the same place, the casing adopts well carbon alloy steel casting to form, the casing is through thermal refining, install motor, gear drive system and forced lubrication device in the casing, the output shaft of motor and gear drive system's the coaxial fixed connection of input, forced lubrication device is equipped with the power input gear, and this power input gear with a gear meshes mutually among the gear drive system, the output of motor is 1100-1500kW, the overall length of rocking arm >4000mm. The utility model discloses long, the power is big, operating condition is low temperature down, can satisfy the mining demand that the full height was once adopted in super thick coal seam more than 7 m.
Description
Technical Field
The utility model relates to a rocking arm of coal-winning machine for mining of super thick coal seam belongs to excavating equipment technical field.
Background
For an extra-thick coal seam, the full-high mining efficiency is highest if the full-high mining efficiency can be mined at one time. However, the size of the rocker arm of the existing coal mining machine is small, the arm length is usually as long as about 3.7 meters, and the coal mining machine needs to mine an extra-thick coal seam for multiple times, so that the efficiency needs to be improved, in addition, the power of the rocker arm of the existing coal mining machine is small, generally not more than 1000kW, the temperature is too high in a working state, sometimes the temperature and/or the temperature rise exceeds the standard specification, and the existing rocker arm of the coal mining machine cannot meet the mining requirement of mining the extra-thick coal seam with the full height at one time of more than 7m by combining the multiple factors.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a super thick coal seam coal-winning machine rocking arm, the size is long, power is big, operating condition is the temperature down, can satisfy the mining demand that the super thick coal seam once adopted the full height more than 7 m.
The utility model discloses a main technical scheme has:
the utility model provides a super thick coal seam coal-winning machine rocking arm, is including dismantling casing and the transition frame of fixed connection together, install motor, gear drive system and forced lubrication device in the casing, the output shaft of motor and the coaxial fixed connection of gear drive system's input, forced lubrication device is equipped with power input gear, and this power input gear with a gear meshes mutually in the gear drive system, the output of motor is 1100-1500kW, the overall length of rocking arm >4000mm.
The shell is formed by casting medium carbon alloy steel, and the shell is subjected to quenching and tempering.
And annular cooling water channels are arranged in the upper cavity wall and the lower cavity wall of the shell.
And the upper surface and the lower surface of the shell are provided with nozzles, and water inlets of the nozzles are communicated with the annular cooling water channels.
The transition frame is fixedly connected with the shell through a long screw and a pin shaft.
The upper portion of transition frame is equipped with a department and increases hydro-cylinder hinge hole, and the lower part is respectively equipped with a fuselage hinge hole around, and two fuselage hinge holes are coaxial.
The gear transmission system comprises a first straight-tooth speed reducing mechanism, a second straight-tooth speed reducing mechanism and a two-stage planetary speed reducing mechanism which are sequentially connected and driven, the first straight-tooth speed reducing mechanism and the second straight-tooth speed reducing mechanism are located in a straight-tooth cavity of the shell, and the two-stage planetary speed reducing mechanism is located in a planetary mechanism installation cavity of the shell.
The second straight-tooth speed reducing mechanism comprises a head-end straight-tooth gear, an idler gear set and a tail-end straight-tooth gear which are sequentially meshed for transmission, the idler gear set comprises odd idler gears, the idler gears are N and M in interval arrangement according to the number of teeth, and M and N are natural numbers which are mutually prime.
Further, the idle gears are preferably arranged at intervals of N, which is a natural number, and N +1, which is a number of teeth.
The forced lubricating device comprises a screw pump and a multi-branch oil path, one part of the multi-branch oil path is a hole path arranged in a solid structure, the other part of the multi-branch oil path is an oil pipe, an input shaft of the screw pump is coaxially and fixedly connected with a gear in a first straight-tooth speed reducing mechanism, an oil outlet of the screw pump is connected to an oil inlet of the multi-branch oil path, oil outlets of the multi-branch oil path are led to shaft holes of idler gears in a second straight-tooth speed reducing mechanism and meshing positions of last two pairs of meshing gear pairs of the second straight-tooth speed reducing mechanism one by one, oil path branches led to shaft holes of the idler gears in the second straight-tooth speed reducing mechanism adopt the hole path arranged inside an idler gear shaft, oil path branches led to meshing positions of the last two pairs of meshing gear pairs of the second straight-tooth speed reducing mechanism adopt the oil pipe, and outlets of the oil pipes are arranged above the meshing positions of the corresponding gear pairs.
The utility model has the advantages that:
the utility model discloses a rocking arm has alleviateed the load of rocking arm through adopting split type structure, well carbon alloy steel material and through annular cooling water course, two-stage straight-tooth on the shell of quenching and tempering and the casing wall and add five-stage idler and the gear drive system and the force lubrication system of two-stage planetary reduction again, has reduced rocking arm drive system heat production, has accelerated the rocking arm heat dissipation and has improved rocking arm drive system's lubricated state, makes the operational reliability and the wholeness ability of rocking arm obtain obvious promotion, makes the rocking arm can adapt to the requirement that the super thick coal seam once adopted full high temperature, life-span, bearing capacity etc..
The utility model discloses an adopt high-power motor and with rocking arm length design more than 4m, satisfy the high-power requirement and the height of adopting requirement of the super thick coal seam coal-winning machine more than 7 m.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the rocker arm of the ultra-thick coal seam mining machine of the present invention;
fig. 2 isbase:Sub>A sectional view (schematic view ofbase:Sub>A gear system structure)base:Sub>A-base:Sub>A of fig. 1.
Reference numerals: 1. a transition frame; 11. heightening a hinge hole of the oil cylinder; 2. a housing; 3. a forced lubrication device; 31. a screw pump; 32. a multi-branch oil path; 4. a gear transmission system; 41. a first gear; 42. an idler pulley; 43. a second gear; 44. a head end spur gear; 45-1, a first idler pulley; 45-2. A second idler pulley; 45-3. A third idler pulley; 45-4. A fourth idler pulley; 45-5, a fifth idler pulley; 47. a tail end spur gear; 48. a two-stage planetary reduction mechanism; 5. an electric motor.
Detailed Description
The utility model discloses a super thick coal seam coal-winning machine rocking arm (can be referred to as rocking arm for short), as shown in fig. 1, 2, for split type structure, including dismantling casing 2 and transition frame 1 fixed connection together. And a motor 5, a gear transmission system 4 and a forced lubricating device 3 are arranged in the shell. The output shaft of the motor is coaxially and fixedly connected with the input end of the gear transmission system to provide power for the gear transmission system. The gear transmission system reduces the speed of the motor with high power and high rotating speed into low speed and high torque and outputs the low speed and high torque to the tail end to drive the roller to cut the coal wall. The forced lubrication device obtains power from the gear transmission system, for example, the power input end of the forced lubrication device is coaxially and fixedly connected to a gear shaft in the gear transmission system, or a power input gear is arranged and meshed with a gear in the gear transmission system (the latter is adopted in the embodiment). The output power of the motor is 1100-1500kW, the total length of the rocker arm is more than 4000mm, and the requirements of high power and large mining height of the ultra-thick coal seam during one-time mining full height are met respectively.
The casing adopts well carbon alloy steel casting to form, just the casing is through quenching and tempering, compares traditional normalizing treatment, and the mechanical properties of material obviously improves, consequently can guarantee the intensity and the hardness of casing satisfy super thick coal seam high strength, high load impact requirement.
And annular cooling water channels are preferably arranged in the upper cavity wall and the lower cavity wall of the shell. The heat generated during the operation of the rocker arm is taken away in a mode of introducing cooling water into the annular cooling water channel, and the temperature of the rocker arm in the working state is reduced.
And the upper surface and the lower surface of the shell are also preferably provided with a plurality of nozzles, and water inlets of the nozzles are communicated with the annular cooling water channel. The cooling water in the annular cooling water channel can be sprayed out to the direction of the coal wall through the nozzle, and the function of spraying dust fall is achieved.
The transition frame is fixedly connected with the shell through a long screw and a pin shaft.
The upper part of the transition frame is provided with a heightening oil cylinder hinge hole 11, the front part and the rear part of the lower part are respectively provided with a machine body hinge hole, and the two machine body hinge holes are coaxial. The transition frame is connected with a heightening oil cylinder of the coal mining machine through a heightening oil cylinder hinge hole, and the swing of the rocker arm is realized through the stretching of the heightening oil cylinder. The heightening oil cylinder hinged hole is arranged at the upper part of the transition frame, and the machine body hinged hole is arranged at the lower part of the transition frame, so that when the coal mining machine works for mining coal, the heightening oil cylinder is pressed, and compared with the situation that the heightening oil cylinder is arranged in a tensile stress state below, the working reliability of the rocker arm is improved.
According to the direction of power transmission, the gear transmission system comprises a first straight-tooth speed reducing mechanism, a second straight-tooth speed reducing mechanism and a two-stage planetary speed reducing mechanism 48 which are connected and driven in sequence. The first straight-tooth speed reducing mechanism and the second straight-tooth speed reducing mechanism are located in a straight-tooth cavity of the shell, and the two-stage planetary speed reducing mechanism is located in a planetary mechanism mounting cavity of the shell. The second straight-tooth speed reducing mechanism comprises a head-end straight-tooth gear 44, an idler gear set and a tail-end straight-tooth gear 47 which are sequentially meshed for transmission. The idler wheel set comprises odd idler wheels, the idler wheels are arranged at intervals according to the condition that the number of teeth is M and the number of teeth is N, and M and N are relatively prime natural numbers. In the case that both M and N are not lower than the number of idler teeth of the corresponding speed reducing mechanism of the rocker arm with the traditional structure, the total length of the rocker arm can be increased by adopting the same number of idler wheels as the rocker arm with the traditional structure, or the required length of the rocker arm can be achieved by adopting the idler wheel group without increasing the number of the idler wheels. In addition, the idler wheel group can enable a pair of teeth on two adjacent idler wheels to overlap once after N × M turns. When a certain pair of teeth are stressed unevenly due to uneven material or hardness, the wear of the teeth is aggravated, and after the idler wheel set is adopted, the meshing frequency of the same pair of teeth is obviously reduced, so that the fatigue strength and the service life of the idler wheel teeth can be obviously improved.
Further, the idle gears are preferably arranged at intervals of N, which is a natural number, and N +1, which is a number of teeth.
In the embodiment shown in the drawings, the idler set comprises 5 idler wheels, namely a first idler wheel 45-1, a second idler wheel 45-2, a third idler wheel 45-3, a fourth idler wheel 45-4 and a fifth idler wheel 45-5 in transmission sequence. The first straight-tooth speed reducing mechanism comprises a first gear 41, an idle gear 42 and a second gear 43 which are in meshing transmission sequentially, the second gear 43 is coaxially and fixedly connected with a head end gear 44, and a tail end gear 47 is coaxially and fixedly connected with a sun gear of a two-stage planetary speed reducing mechanism 48.
The forced lubrication device 3 includes a screw pump 31 and a multi-branch oil path 32, one part of which is a hole provided in a solid structure, and the other part of which is an oil pipe. An input shaft of the screw pump is coaxially and fixedly connected with one gear in the first straight-tooth speed reducing mechanism, and the screw pump obtains rotary power from the gear. The oil outlet of the screw pump is connected to the oil inlet of the multi-branch oil path, the multi-branch oil path is provided with a plurality of oil outlets, and each oil outlet is communicated with the shaft hole of each idler gear in the second straight-tooth speed reducing mechanism and the meshing position of the last two pairs of meshing gears of the second straight-tooth speed reducing mechanism in a one-to-one mode. The oil path branches leading to the shaft holes of the idle gears in the second straight-tooth speed reducing mechanism adopt hole channels arranged in the idle gear shafts, the oil path branches leading to the meshing parts of the last two pairs of meshing gear pairs of the second straight-tooth speed reducing mechanism adopt oil pipes, and the outlets of the oil pipes are arranged above the meshing parts of the corresponding gear pairs. The gear oil is pumped into the inner cavity of the shell by the screw pump, the gear oil is sent to the mounting shaft hole of each idler gear in the second straight-tooth speed reducing mechanism through the multi-branch oil path to lubricate an idler gear bearing, and oil injection lubrication is carried out on the corresponding gear pair at the meshing position of the last two pairs of meshing gear pairs of the second straight-tooth speed reducing mechanism, so that the gear service life is prevented from being influenced due to insufficient gear meshing at the highest position of the straight-tooth cavity when the rocker arm ascends to mine coal.
The utility model discloses a split type structure, and wherein casing adopt well carbon alloy steel to make and through thermal refining, can guarantee the intensity of casing, avoid casing during operation load big, bending deformation to reduce gear drive system's calorific capacity. Meanwhile, the annular cooling water channels in the upper cavity wall and the lower cavity wall of the shell can further cool the shell, and the forced lubricating system can fully lubricate the gear, prolong the service life of the gear, reduce heat generated by gear meshing and enable the rocker arm to keep a lower temperature in a working state, so that the working reliability of the rocker arm is obviously improved.
The utility model discloses super thick coal seam coal mining machine rocking arm can satisfy the super thick coal seam coal mining machine requirement of adopting the height more than 7m, and power is big, and rocking arm operating temperature is low, and is longe-lived, has satisfied the reliability requirement of rocking arm.
Claims (11)
1. The utility model provides a super thick coal seam coal-winning machine rocking arm which characterized in that: the mechanical transmission device comprises a shell and a transition frame which are detachably and fixedly connected together, wherein a motor, a gear transmission system and a forced lubricating device are installed in the shell, an output shaft of the motor is coaxially and fixedly connected with an input end of the gear transmission system, the forced lubricating device is provided with a power input gear, the power input gear is meshed with one gear in the gear transmission system, the output power of the motor is 1100-1500kW, and the total length of the rocker arm is more than 4000mm.
2. The rocker arm of the super-thick coal seam mining machine according to claim 1, characterized in that: the shell is formed by casting medium carbon alloy steel, and the shell is subjected to quenching and tempering.
3. The rocker arm of the super-thick coal seam mining machine according to claim 2, characterized in that: and annular cooling water channels are arranged in the upper cavity wall and the lower cavity wall of the shell.
4. The rocker arm of the super-thick coal seam mining machine according to claim 3, wherein: and the upper surface and the lower surface of the shell are provided with nozzles, and water inlets of the nozzles are communicated with the annular cooling water channels.
5. The rocker arm of the super-thick coal seam mining machine according to claim 1, characterized in that: the transition frame is fixedly connected with the shell through a long screw and a pin shaft.
6. The rocker arm of the super-thick coal seam mining machine according to claim 1, characterized in that: the upper portion of transition frame is equipped with a department and increases hydro-cylinder hinge hole, and the lower part is respectively equipped with a fuselage hinge hole around, and two fuselage hinge holes are coaxial.
7. The rocker arm of the super-thick coal seam mining machine according to claim 1, characterized in that: the gear transmission system comprises a first straight-tooth speed reducing mechanism, a second straight-tooth speed reducing mechanism and a two-stage planetary speed reducing mechanism which are sequentially connected and driven, the first straight-tooth speed reducing mechanism and the second straight-tooth speed reducing mechanism are located in a straight-tooth cavity of the shell, and the two-stage planetary speed reducing mechanism is located in a planetary mechanism installation cavity of the shell.
8. The rocker arm of the ultra-thick coal seam mining machine according to claim 7, characterized in that: the second straight-tooth speed reducing mechanism comprises a head-end straight gear, an idler gear set and a tail-end straight gear which are sequentially meshed for transmission, the idler gear set comprises an odd number of idler gears, the idler gears are arranged at intervals of M and N according to the number of teeth, and the M and the N are natural numbers with relative qualities.
9. The rocker arm of the super-thick coal seam mining machine according to claim 8, wherein: the idler wheels are arranged at intervals according to the condition that the number of teeth is N and the number of teeth is N +1, and N is a natural number.
10. The rocker arm of the super-thick coal seam mining machine according to claim 7, 8 or 9, wherein: the forced lubricating device comprises a screw pump and a multi-branch oil path, one part of the multi-branch oil path is a hole path arranged in a solid structure, the other part of the multi-branch oil path is an oil pipe, an input shaft of the screw pump is coaxially and fixedly connected with a gear in a first straight-tooth speed reducing mechanism, an oil outlet of the screw pump is connected to an oil inlet of the multi-branch oil path, oil outlets of the multi-branch oil path are led to shaft holes of idler gears in a second straight-tooth speed reducing mechanism and meshing positions of last two pairs of meshing gear pairs of the second straight-tooth speed reducing mechanism one by one, oil path branches led to shaft holes of the idler gears in the second straight-tooth speed reducing mechanism adopt the hole path arranged inside an idler gear shaft, oil path branches led to meshing positions of the last two pairs of meshing gear pairs of the second straight-tooth speed reducing mechanism adopt the oil pipe, and outlets of the oil pipes are arranged above the meshing positions of the corresponding gear pairs.
11. The rocker arm of the super-thick coal seam mining machine as claimed in claim 2, 3, 4, 5 or 6, wherein: the gear transmission system comprises a first straight-tooth speed reducing mechanism, a second straight-tooth speed reducing mechanism and a two-stage planetary speed reducing mechanism which are sequentially connected and driven, the first straight-tooth speed reducing mechanism and the second straight-tooth speed reducing mechanism are located in a straight-tooth cavity of the shell, and the two-stage planetary speed reducing mechanism is located in a planetary mechanism installation cavity of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221870363.7U CN218407421U (en) | 2022-07-09 | 2022-07-09 | Rocker arm of super-thick coal seam mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221870363.7U CN218407421U (en) | 2022-07-09 | 2022-07-09 | Rocker arm of super-thick coal seam mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218407421U true CN218407421U (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221870363.7U Active CN218407421U (en) | 2022-07-09 | 2022-07-09 | Rocker arm of super-thick coal seam mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218407421U (en) |
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2022
- 2022-07-09 CN CN202221870363.7U patent/CN218407421U/en active Active
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