CN220979493U - Built-in coal mining machine rocker arm spraying and cooling structure - Google Patents
Built-in coal mining machine rocker arm spraying and cooling structure Download PDFInfo
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- CN220979493U CN220979493U CN202323214759.3U CN202323214759U CN220979493U CN 220979493 U CN220979493 U CN 220979493U CN 202323214759 U CN202323214759 U CN 202323214759U CN 220979493 U CN220979493 U CN 220979493U
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- end cover
- rocker arm
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- spraying
- water channel
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- 238000005507 spraying Methods 0.000 title claims abstract description 62
- 239000003245 coal Substances 0.000 title claims abstract description 41
- 238000005065 mining Methods 0.000 title claims abstract description 29
- 238000001816 cooling Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000007921 spray Substances 0.000 claims abstract description 27
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 19
- 239000003921 oil Substances 0.000 description 21
- 239000000428 dust Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002817 coal dust Substances 0.000 description 3
- 238000004945 emulsification Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000036346 tooth eruption Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002685 pulmonary effect Effects 0.000 description 1
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Abstract
The utility model belongs to the field of coal mine excavating machinery, and particularly relates to a built-in rocker arm spraying and cooling structure of a coal mining machine; comprises a rocker arm shell, a bearing seat, an end cover and a built-in spraying device; the bearing seat, the end cover and the built-in spraying device are coaxial and are sequentially arranged in the rocker arm shell from outside to inside; the first-stage water channel in the rocker arm shell is communicated with the built-in spraying device through the second-stage water channel in the bearing seat and the third-stage water channel in the end cover; the built-in spraying device comprises a small end cover and an inner spraying pipe; the small end cover is fixed on the end cover through a first screw, the inner spray pipe is inserted into the concave cavity of the small end cover, the peripheral wall of the small end cover is provided with a water guide hole which is communicated with the concave cavity and the three-stage water channel, and water from the three-stage water channel enters the inner spray pipe through the water guide hole and the concave cavity; the built-in rocker arm spraying and cooling structure of the coal mining machine is compact in structure, and the whole size of the built-in rocker arm spraying and cooling structure is reduced under the condition that the service life is not affected.
Description
Technical Field
The utility model belongs to the field of coal mine excavating machinery, and particularly relates to a built-in rocker arm spraying and cooling structure of a coal mining machine.
Background
In the process of cutting and loading coal, the drum of the coal mining machine can generate a large amount of coal dust, the coal dust flies to easily cause coal dust explosion and the pulmonary infection of miners, the harmfulness is conceivable, the visibility of a working face is reduced, and the drum is extremely unfavorable to safety and health, so that dust fall is needed in time. At present, the dust fall method of the drum shearer adopts an internal and external spray water supply device to fall dust, and the main function of the dust fall method is to cool the cutting teeth of the drum shearer, so that the loss of the cutting teeth is reduced; and the dust on the working face is eliminated, and the underground working environment of the coal mine is improved. Therefore, the reliability of the spraying water supply device is improved, the safety of the mine working face is very beneficial, and meanwhile, the maintenance of the working environment of miners is also effectively ensured.
The existing internal and external spray water supply device of the drum shearer has the following defects:
(1) The original structure is arranged outside the rocker arm shell;
The coal cutter original spray water supply device is characterized in that a part of the device at the connection part of the coal cutter original spray water supply device and the inner spray pipe is exposed out of the rocker arm shell, so that the rocker arm shell is exposed under severe working conditions, coal gangue can be gathered around the exposed device in the semi-open operation of the coal cutter spray system, and the device is easily damaged by the coal gangue and the like under the action of long-time external force, so that the inner spray device cannot be used. The replacement frequency of the spraying device is increased, the production efficiency of the coal mining machine is affected, and the maintenance cost is increased.
(2) The occupied space is limited;
The original spray water supply device of the coal mining machine has the inherent characteristics of the structure, namely, a part of the device at the connection part with the inner spray pipe is exposed outside the rocker arm shell, so that the device is considered to be free from influencing the coal passing space in the installation and use process and free from interfering with other parts of the coal mining machine, and the design time of coal mining designers is greatly prolonged.
(3) Oil emulsification is easy to occur in a gear cavity of the rocker arm transmission system;
The spraying water pipe of the coal mining machine rotates along with the roller of the coal mining machine in the working process, because water in a mine contains a lot of impurities, the water pipe has a certain influence on the service life of a sealing element in long-time rotation, when the sealing element is damaged, the spraying effect in a rocker arm can be greatly reduced, and the water can enter a gear oil cavity of the rocker arm of the coal mining machine to cause oil emulsion, so that the performance of the coal mining machine and the service life of the rocker arm are seriously influenced.
Disclosure of utility model
The utility model aims to solve the problems that the existing internal and external spraying water supply device of the drum shearer is easy to collide by coal gangue, occupies limited space and is easy to emulsify oil in a gear cavity of a rocker arm transmission system.
The utility model provides the following technical scheme: a built-in rocker arm spraying and cooling structure of a coal mining machine comprises a rocker arm shell, a bearing seat, an end cover and a built-in spraying device; the bearing seat, the end cover and the built-in spraying device are coaxial and are sequentially arranged in the rocker arm shell from outside to inside; the first-stage water channel in the rocker arm shell is communicated with the built-in spraying device through the second-stage water channel in the bearing seat and the third-stage water channel in the end cover;
The built-in spraying device comprises a small end cover and an inner spraying pipe; the small end cover is fixed on the end cover through a first screw, the inner spray pipe is inserted in the concave cavity of the small end cover, the peripheral wall of the small end cover is provided with a water guide hole which is communicated with the concave cavity and the three-stage water channel, and water from the three-stage water channel enters the inner spray pipe through the water guide hole and the concave cavity.
Further, two sets of water seals are provided between the small end cap and the inner spray tube.
Further, the built-in spraying device further comprises an oil cup, an oil guide hole is formed in the small end cover, an inlet of the oil guide hole is formed in a top plate of the small end cover, the oil cup is arranged at the inlet of the oil guide hole, a distance pad is arranged between the two sets of water seals for positioning of the water seals, and an outlet of the oil guide hole is located between the two sets of water seals.
Further, a drain hole is formed in the small end cover, and the drain hole is communicated with the inside and the outside of the rocker arm shell.
Further, the contact surface between the primary water channel of the rocker arm shell and the secondary water channel of the bearing seat is sealed by a first O-shaped ring; the contact surface between the second water channel of the bearing seat and the third water channel of the end cover is sealed by a second O-shaped ring.
Further, the bearing seat is fixed on the rocker arm shell through a screw, and the end cover is fixed on the bearing seat through a second screw.
Further, a first radial sealing ring and an end face sealing ring are arranged between the small end cover and the end cover; a second radial sealing ring is arranged between the end cover and the bearing seat, and a third radial sealing ring is arranged between the bearing seat and the rocker arm shell.
Compared with the prior art, the utility model has the advantages that:
The built-in rocker arm spraying and cooling structure of the coal mining machine provided by the utility model has a compact structure, the whole size of the built-in rocker arm spraying and cooling structure is reduced under the condition that the service life is not influenced, the built-in spraying device is completely immersed into the end cover by designing and installing the end cover of the internal spraying device, and the built-in spraying device is not exposed any more, so that the situation that a spraying water supply system is damaged by collision of coal gangue and the like under the action of long-time external force is greatly avoided, the reliability of the built-in spraying device is improved, the application of the internal spraying device is reduced in a quality guarantee period, the cost of the whole machine is reduced, and the use efficiency of a mining party is improved.
The high-pressure water flows in from the primary water channel of the rocker arm shell, an independent water inlet pipe is not needed, the structure is simple, and the influence of the external space of the coal mining machine is avoided.
In order to prevent leakage of high-pressure water, oil emulsification in the gear cavity is caused. The structure adopts two measures, namely, grease is injected into the water seal by utilizing the oil cup and the oil guide hole, and the water seal clamping is realized by positioning the distance pad, so that water leakage is prevented; secondly, considering that the sealing element is extremely easy to damage after long-time working, a drain hole is formed in the small end cover, and leaked high-pressure water is discharged out of the rocker arm shell, so that the performance of the coal mining machine is improved, and the service life of the rocker arm is prolonged.
The high-pressure water is split through the rocker arm shell and part of the high-pressure water is sprayed out through the shell nozzle, and the other part of the high-pressure water flows through the inner spray pipe and flows to the nozzle of the drum of the coal mining machine, so that the dual functions of cooling and spraying are achieved.
The built-in spraying device is connected with the end cover which is completely immersed in the structural design through the screw, when the built-in spraying device breaks down, the built-in spraying device can be replaced only by disassembling the screw, and the built-in spraying device is easy to disassemble and install, so that the working efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic structural view of the built-in spray device.
In the figure: 1-a rocker arm housing; 1.1-first-level waterways; 2-bearing seats; 2.1-a secondary waterway; 3-end caps; 3.1-third-level waterways; 4-built-in spraying device; 4.1-small end caps; 4.2-inner spray tube; 4.3-an oil cup; 4.4-water sealing; 4.5-distance pad; 4.6-end face sealing rings; 4.7-drain holes; 4.8-a first radial seal ring; 4.9-cavity; 4.10-water guide holes; 4.11-an oil guide hole; 5-a second screw; 6-a first screw; 7-a first O-ring; 8-a second O-ring; 9-a second radial seal ring; 10-third radial sealing ring.
Detailed Description
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
As shown in fig. 1 and 2: the built-in rocker arm spraying and cooling structure of the coal mining machine comprises a rocker arm shell 1, a bearing seat 2, an end cover 3 and a built-in spraying device 4; the bearing seat 2, the end cover 3 and the built-in spraying device 4 are coaxial and are sequentially arranged in the rocker arm shell 1 from outside to inside; the primary water channel 1.1 in the rocker arm shell 1 is communicated with the built-in spraying device 4 through the secondary water channel 2.1 in the bearing seat 2 and the tertiary water channel 3.1 in the end cover 3.
The built-in spraying device 4 comprises a small end cover 4.1 and an inner spraying pipe 4.2; the small end cover 4.1 is fixed on the end cover 3 through a first screw 6, the inner spray pipe 4.2 is inserted into a concave cavity 4.9 of the small end cover 4.1, a water guide hole 4.10 which is communicated with the concave cavity 4.9 and the three-stage water channel 3.1 is formed in the peripheral wall of the small end cover 4.1, and water from the three-stage water channel 3.1 enters the inner spray pipe 4.2 through the water guide hole 4.10 and the concave cavity 4.9.
During operation, high-pressure water flows into the second-level water channel 2.1 of the bearing seat 2 from the first-level water channel 1.1 of the rocker arm shell 1, flows into the third-level water channel 3.1 of the end cover 3 from the second-level water channel 2.1, flows into the small end cover 4.1 of the built-in spraying device 4 from the third-level water channel 3.1, and flows into the nozzle of the drum of the coal mining machine from the inner spraying pipe 4.2 to realize spraying. The high-pressure water flows in from the primary water channel 1.1 of the rocker arm shell 1, does not need an independent water pipe, has a simple structure and is not influenced by the external space of the coal mining machine. The high-pressure water is split through the rocker arm shell 1 and is sprayed out through the shell nozzle, and the high-pressure water is partially sprayed through the inner spray pipe 4.2 and flows to the nozzle of the coal cutter drum, so that the dual functions of cooling and spraying are achieved.
In order to prevent high pressure water from leaking between the small end cap 4.1 and the inner spray tube 4.2, two sets of water seals 4.4 are provided between the small end cap 4.1 and the inner spray tube 4.2.
Meanwhile, in order to prevent the leakage of high-pressure water, the oil emulsification phenomenon in the gear cavity is caused. The built-in spraying device 4 further comprises an oil cup 4.3, an oil guide hole 4.11 is arranged in the small end cover 4.1, an inlet of the oil guide hole 4.11 is formed in a top plate of the small end cover 4.1, the oil cup 4.3 is arranged at the inlet of the oil guide hole 4.11, a distance pad 4.5 is arranged between the two groups of water seals 4.4 and used for positioning the water seals 4.4, and an outlet of the oil guide hole 4.11 is located between the two groups of water seals 4.4. The small end cover 4.1 is internally provided with a drain hole 4.7, and the drain hole 4.7 is communicated with the inside and the outside of the rocker arm shell 1.
The water seal 4.4 on the upper layer is provided with a retainer ring, and the retainer ring plays a role in positioning the water seal 4.4 and the inner spray pipe 4.2 and prevents the inner spray pipe 4.2 from falling.
In order to prevent the leakage phenomenon from occurring between the contact surfaces of the rocker arm shell 1 and the bearing seat 2, the bearing seat 2 and the end cover 3, and the end cover 3 and the small end cover 4.1 of the built-in spraying device 4, the contact surfaces of the primary water channel 1.1 of the rocker arm shell 1 and the secondary water channel 2.1 of the bearing seat 2 are sealed by a first O-shaped ring 7; the contact surfaces between the second-stage water channel 2.1 of the bearing seat 2 and the third-stage water channel 3.1 of the end cover 3 are sealed by a second O-shaped ring 8, and the phenomena of high-pressure water channeling, leakage and the like can be effectively solved by adopting the O-shaped ring end face seal. A first radial sealing ring 4.8 and an end surface sealing ring 4.6 are arranged between the small end cover 4.1 and the end cover 3, so that the sealing is enhanced, and the dripping is prevented; a second radial sealing ring 9 is arranged between the end cover 3 and the bearing seat 2, and a third radial sealing ring 10 is arranged between the bearing seat 2 and the rocker arm shell 1.
The bearing seat 2 is fixed on the rocker arm shell 1 through a screw, and the end cover 3 is fixed on the bearing seat 2 through a second screw 5.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A built-in coal mining machine rocking arm spraying and cooling structure which characterized in that: comprises a rocker arm shell (1), a bearing seat (2), an end cover (3) and a built-in spraying device (4); the bearing seat (2), the end cover (3) and the built-in spraying device (4) are coaxial and are sequentially arranged in the rocker arm shell (1) from outside to inside; the primary water channel (1.1) in the rocker arm shell (1) is communicated with the built-in spraying device (4) through the secondary water channel (2.1) in the bearing seat (2) and the tertiary water channel (3.1) in the end cover (3);
The built-in spraying device (4) comprises a small end cover (4.1) and an inner spraying pipe (4.2); the small end cover (4.1) is fixed on the end cover (3) through a first screw (6), the inner spray pipe (4.2) is inserted into a concave cavity (4.9) of the small end cover (4.1), a water guide hole (4.10) for communicating the concave cavity (4.9) with the three-stage water channel (3.1) is formed in the peripheral wall of the small end cover (4.1), and water from the three-stage water channel (3.1) enters the inner spray pipe (4.2) through the water guide hole (4.10) and the concave cavity (4.9).
2. The built-in rocker arm spraying and cooling structure of the coal mining machine according to claim 1, wherein: two sets of water seals (4.4) are arranged between the small end cover (4.1) and the inner spray pipe (4.2).
3. The built-in rocker arm spraying and cooling structure of the coal mining machine according to claim 2, wherein: the built-in spraying device (4) further comprises an oil cup (4.3), an oil guide hole (4.11) is formed in the small end cover (4.1), an inlet of the oil guide hole (4.11) is formed in a top plate of the small end cover (4.1), the oil cup (4.3) is arranged at the inlet of the oil guide hole (4.11), a distance pad (4.5) is arranged between two groups of water seals (4.4) and used for positioning the water seals (4.4), and an outlet of the oil guide hole (4.11) is located between the two groups of water seals (4.4).
4. A built-in shearer rocker arm spraying and cooling structure as claimed in claim 3, wherein: the small end cover (4.1) is internally provided with a drain hole (4.7), and the drain hole (4.7) is communicated with the inside and the outside of the rocker arm shell (1).
5. The built-in rocker arm spraying and cooling structure of the coal mining machine according to claim 1, wherein: the contact surface between the primary water channel (1.1) of the rocker arm shell (1) and the secondary water channel (2.1) of the bearing seat (2) is sealed by a first O-shaped ring (7); the contact surface between the second-stage water channel (2.1) of the bearing seat (2) and the third-stage water channel (3.1) of the end cover (3) is sealed by a second O-shaped ring (8).
6. The built-in rocker arm spraying and cooling structure of the coal mining machine according to claim 2, wherein: the bearing seat (2) is fixed on the rocker arm shell (1) through a screw, and the end cover (3) is fixed on the bearing seat (2) through a second screw (5).
7. The built-in rocker arm spraying and cooling structure of the coal mining machine according to claim 2, wherein: a first radial sealing ring (4.8) and an end surface sealing ring (4.6) are arranged between the small end cover (4.1) and the end cover (3); a second radial sealing ring (9) is arranged between the end cover (3) and the bearing seat (2), and a third radial sealing ring (10) is arranged between the bearing seat (2) and the rocker arm shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323214759.3U CN220979493U (en) | 2023-11-28 | 2023-11-28 | Built-in coal mining machine rocker arm spraying and cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323214759.3U CN220979493U (en) | 2023-11-28 | 2023-11-28 | Built-in coal mining machine rocker arm spraying and cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220979493U true CN220979493U (en) | 2024-05-17 |
Family
ID=91037464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323214759.3U Active CN220979493U (en) | 2023-11-28 | 2023-11-28 | Built-in coal mining machine rocker arm spraying and cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220979493U (en) |
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2023
- 2023-11-28 CN CN202323214759.3U patent/CN220979493U/en active Active
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