CN111396045A - Spraying structure in cutting part of heading machine - Google Patents
Spraying structure in cutting part of heading machine Download PDFInfo
- Publication number
- CN111396045A CN111396045A CN202010222015.8A CN202010222015A CN111396045A CN 111396045 A CN111396045 A CN 111396045A CN 202010222015 A CN202010222015 A CN 202010222015A CN 111396045 A CN111396045 A CN 111396045A
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- Prior art keywords
- cutting
- spindle
- inner cavity
- heading machine
- cutting spindle
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- 238000005507 spraying Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 238000007789 sealing Methods 0.000 claims description 23
- 239000007921 spray Substances 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000010687 lubricating oil Substances 0.000 description 10
- 239000000428 dust Substances 0.000 description 8
- 230000001050 lubricating effect Effects 0.000 description 4
- 239000003595 mist Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- E21C35/22—Equipment for preventing the formation of, or for removal of, dust
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
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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)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention provides an internal spraying structure of a cutting part of a heading machine, which comprises a cutting head and a cutting spindle, wherein the front end of the cutting spindle is fixedly connected with the cutting head, a nozzle is arranged on the cutting head, a cutting spindle inner cavity hole communicated with the nozzle is arranged in the cutting spindle, and a rotary joint is arranged at the rear end of the cutting spindle and is communicated with the cutting spindle inner cavity hole through a water inlet connecting shaft. The spraying structure in the cutting part of the heading machine can ensure that water cannot enter the inner cavity of the cutting arm after leaking, so that a front cavity bearing and a rear cavity bearing which damage the inner cavity of the cutting arm cannot be damaged, and the production cost and the production efficiency are ensured.
Description
Technical Field
The invention relates to the technical field of tunneling equipment, in particular to an inner spraying structure of a cutting part of a tunneling machine.
Background
At present, cantilever type development machines are more and more widely applied in coal mines and mine excavation, users not only care about the improvement of production efficiency, but also the key points considered by users about the underground working environment, the physical health condition and the safety of workers, and particularly, dust generated when the underground development machines cut is very harmful to operators. The development machine is equipped with interior water spray dust device, installs the nozzle on the cutterhead and sprays the dust fall, because the cutting spindle constantly drives the rotatory cutting work of cutterhead, so water how gets into the nozzle injection on the cutterhead is a current difficult problem. If water leaks into the inner cavity of the cutting arm and is mixed with lubricating grease in the inner cavity, parts such as a cutting spindle bearing and the like can be damaged, and the whole machine cannot work.
The spraying water channels in the current tunneling machine are different in form, but the water channels are sealed by using rotary seals, the diameter of the rotary seals is larger due to the larger diameter of the cutting arms, and in addition, the machining precision error of equipment causes the rotary seals to be easily damaged, so that the water channel leakage is easily caused. The inner spraying water channels of the existing development machine are mainly divided into two types: one is that the water channel enters from the outer cylinder of the cutting arm, reaches the cutting head after passing through the inner cavity of the main shaft, and sprays dust through a nozzle arranged on the cutting head, and if the structure leaks, the bearing in the rear cavity of the cutting arm can be damaged. The other type is that the water channel enters from the outer cylinder of the cutting arm and enters the cutting head through the disk root seat to spray and reduce dust, and if the structure has a water leakage phenomenon, a bearing of the front cavity of the cutting arm can be damaged. No matter the front cavity bearing or the rear cavity bearing of the cutting arm is damaged, the front cavity bearing or the rear cavity bearing needs to be replaced, so that the cost is increased, and meanwhile, the production efficiency is influenced.
Disclosure of Invention
The invention aims to provide an inner spraying structure of a cutting part of a heading machine, which can prevent water from entering a front cavity and a rear cavity of a cutting arm.
In order to solve the technical problem, the invention provides an inner spraying structure of a cutting part of a heading machine, which comprises a cutting head and a cutting spindle, wherein the front end of the cutting spindle is fixedly connected with the cutting head, a nozzle is arranged on the cutting head, a cutting spindle inner cavity hole communicated with the nozzle is arranged in the cutting spindle, and a rotary joint is arranged at the rear end of the cutting spindle and is communicated with the cutting spindle inner cavity hole through a water inlet connecting shaft.
Furthermore, the side part of the cutting spindle is provided with a cutting spindle rotating input shaft which can drive the cutting spindle to rotate in parallel.
Further, the rotary input shaft of the cutting spindle is arranged on the outer cylinder of the cutting arm.
Furthermore, the cutting spindle is driven to rotate by the rotation input shaft of the cutting spindle and the cutting spindle through gear transmission.
Furthermore, the cutting spindle is arranged in the outer cylinder of the cutting arm through a front cavity bearing and a rear cavity bearing.
Further, a cutting arm inner cavity sealing device is fixedly arranged in an inner cavity of the rear portion of the cutting arm outer cylinder, the cutting arm inner cavity sealing device is located on the outer side of the end portion of the cutting spindle, and the rotary joint is fixedly connected to the outer side wall of the cutting arm inner cavity sealing device.
Furthermore, the water inlet connecting shaft penetrates through the cutting arm inner cavity closing device and is fixedly connected with the water inlet end of the cutting spindle inner cavity hole.
Furthermore, a dynamic sealing device is arranged at the contact position of the water inlet connecting shaft and the cutting arm inner cavity sealing device.
According to the spraying structure in the cutting part of the heading machine, the water inlet rotary joint is arranged at the tail part of the cutting spindle fixedly connected with the cutting head, the rotary joint is communicated with the inner cavity hole of the cutting spindle in the cutting spindle through the water inlet connecting shaft, water is supplied to the nozzle on the cutting head communicated with the inner cavity hole of the cutting spindle, the water cannot enter the inner cavity of the cutting arm after leaking, the phenomenon that lubricating oil loses the lubricating effect due to the fact that leaked water is mixed with the lubricating oil in the inner cavity of the cutting arm is avoided, and therefore the front cavity bearing and the rear cavity bearing of the inner cavity of the cutting arm cannot be damaged due to the fact that the lubricating oil fails is avoided, and production cost and production efficiency are guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a spraying structure in a cutting part of a heading machine according to an embodiment of the invention;
fig. 2 is a partial structure enlarged view of a spraying structure in a cutting part of the heading machine according to an embodiment of the invention.
Detailed Description
Referring to fig. 1, the spraying structure in the cutting part of the heading machine provided by the embodiment of the invention comprises a cutting head 1 and a cutting spindle 2, the front end of which is fixedly connected with the cutting head 1, the cutting head 1 is provided with a nozzle capable of spraying water mist outwards, a cutting spindle inner cavity hole 6 communicated with the nozzle is arranged on an axis line in the cutting spindle 2, the rear end of the cutting spindle 2 is provided with a rotary joint 7, a water inlet connecting shaft 10 is fixedly installed in the cutting spindle inner cavity hole 6 at the rear end of the cutting spindle 2, the other end of the water inlet connecting shaft 10 is connected with the rotary joint 7, and the rotary joint 7 is communicated with the cutting spindle inner cavity hole 6 through the water inlet connecting shaft 10. The external spraying water enters the water inlet connecting shaft 10 through the rotary joint 7, then enters the cutting spindle inner cavity hole 6 from the water inlet connecting shaft 10, enters the nozzle through the cutting spindle inner cavity hole 6, and finally is sprayed out in a water mist mode from the nozzle. Because the water for spraying enters the water path through the rotary joint 7 at the rear end part of the cutting spindle 2, even if the water for spraying leaks, the leaked water cannot enter the inner cavity of the cutting arm, thereby avoiding the leakage water from being mixed with the lubricating oil in the inner cavity of the cutting arm to cause the lubricating oil to lose the lubricating effect, and ensuring that the front cavity bearing and the rear cavity bearing in the inner cavity of the cutting arm cannot be damaged due to the failure of the lubricating oil.
Wherein, the cutting main shaft 2 is installed in the cutting arm outer barrel 4 through the front cavity bearing 3 and the rear cavity bearing 5, and the cutting main shaft 2 can rotate in the cutting arm outer barrel 4 through the front cavity bearing 3 and the rear cavity bearing 5, so that the cutting head 1 fixedly connected with the cutting main shaft 2 can be driven to rotate along with the rotation.
The inner cavity of the rear part of the outer cylinder 4 of the cutting arm is fixedly provided with a cutting arm inner cavity sealing device 9, the cutting arm inner cavity sealing device 9 is positioned outside the rear end part of the cutting spindle 2, the cutting arm inner cavity sealing device 9 and the outer cylinder 4 of the cutting arm are fixedly connected through a bolt, lubricating oil which can seal the inner cavity of the cutting arm is prevented from leaking outwards, and meanwhile, external dust and water can be prevented from entering the inner cavity of the cutting arm.
The rotary joint 7 is fixedly arranged on the outer side wall of the cutting arm inner cavity closing device 9 through a bolt. One end of a water inlet connecting shaft 10 is connected with the rotary joint 7, the other end of the water inlet connecting shaft penetrates through the cutting arm inner cavity sealing device 9 and is fixedly installed on the water inlet end of the cutting spindle inner cavity hole 6 of the cutting spindle 2, and when the cutting spindle 2 rotates, the water inlet connecting shaft 10 rotates along with the cutting spindle 2. In order to ensure the sealing performance between the water inlet connecting shaft 10 and the cutting arm inner cavity sealing device 9 when the water inlet connecting shaft 10 rotates, a movable sealing device 11 is arranged at the contact position of the water inlet connecting shaft 10 and the cutting arm inner cavity sealing device 9. The diameter of the water inlet connecting shaft 10 is very small, so that compared with the dynamic sealing diameter of the traditional structure, the diameter of the dynamic sealing device 11 is much smaller, therefore, under the condition of the same rotating speed, the service life of the dynamic sealing device 11 can be greatly prolonged, water leakage caused by damage of the dynamic sealing device 11 is avoided, and the use stability of the equipment is greatly enhanced.
In order to drive the cutting head 1 fixedly connected with the cutting spindle 2 to rotate and avoid the installation position of the rotary joint 7, a driving system for providing power for the cutting spindle 2 is arranged on the cutting arm outer cylinder 4 at the side part of the cutting spindle 2, a cutting spindle rotary input shaft 8 of the driving system is arranged at the side part of the cutting spindle 2 and is arranged in parallel with the cutting spindle 2, and the cutting spindle rotary input shaft 8 and the cutting spindle 2 are in gear transmission. When the rotary input shaft 8 of the cutting spindle rotates, the cutting spindle 2 is driven to rotate, and the rotating cutting spindle 2 drives the cutting head 1 to rotate.
When the heading machine carries out cutting work, the cutting spindle 2 rotates under the drive of the rotary input shaft 8 of the cutting spindle to drive the cutting head 1 to rotate so as to realize the cutting work, the spray water supply system is connected with the rotary joint 7 fixed on the outer side wall of the cutting arm inner cavity sealing device 9, the spray water enters the rotary joint 7 from the spray water supply system, the spray water entering the rotary joint 7 enters the water inlet connecting shaft 10 rotating along with the cutting spindle 2, then enters the inner cavity hole 6 of the cutting spindle from the water inlet connecting shaft 10, enters the nozzle through the inner cavity hole 6 of the cutting spindle, and finally is sprayed out from the nozzle in a water mist mode, so that when the cutting spindle 2 continuously drives the cutting head 1 to rotate for cutting, the spraying water enters the nozzle on the cutting head 1 for spraying, and the dust falling effect on dust generated by the cutting work of the heading machine is achieved. And, because the spray water enters the spray nozzle of the cutting head 1 through the rotary joint 7 at the rear end part of the cutting spindle 2, even if the spray water leaks, the leaked water cannot enter the inner cavity of the cutting arm, thereby avoiding the leakage water from mixing with the lubricating oil in the inner cavity of the cutting arm to cause the lubricating oil to lose the lubricating effect, avoiding the front cavity bearing and the rear cavity bearing in the inner cavity of the cutting arm from being damaged due to the failure of the lubricating oil, and ensuring the production cost and the production efficiency.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (8)
1. The utility model provides a spraying structure in entry driving machine cutting units which characterized in that: including cutterhead (1), and front end and cutterhead (1) fixed connection's cutting spindle (2), set up the nozzle on cutterhead (1), set up in cutting spindle (2) with cutting spindle inner chamber hole (6) of nozzle intercommunication, cutting spindle (2) rear end sets up rotary joint (7), rotary joint (7) are through connecting axle (10) and cutting spindle inner chamber hole (6) intercommunication of intaking.
2. The structure of claim 1, wherein the spray structure is arranged in the cutting part of the heading machine: and the side parts of the cutting spindles (2) are provided with cutting spindle rotating input shafts (8) which can drive the cutting spindles (2) to rotate in parallel.
3. The structure of claim 2, wherein the spray structure is arranged in the cutting part of the heading machine: the cutting spindle rotary input shaft (8) is arranged on the cutting arm outer cylinder (4).
4. The structure of claim 3, wherein the spray structure is arranged in the cutting part of the heading machine: the cutting spindle (2) is driven to rotate by the gear transmission between the cutting spindle rotary input shaft (8) and the cutting spindle (2).
5. The structure of claim 4, wherein the spray structure is arranged in the cutting part of the heading machine: the cutting spindle (2) is arranged in the cutting arm outer cylinder (4) through a front cavity bearing (3) and a rear cavity bearing (5).
6. The structure of claim 5, wherein the spray structure is arranged in the cutting part of the heading machine: the inner cavity at the rear part of the cutting arm outer cylinder (4) is fixedly provided with a cutting arm inner cavity sealing device (9), the cutting arm inner cavity sealing device (9) is positioned at the outer side of the end part of the cutting spindle (2), and the rotary joint (7) is fixedly connected to the outer side wall of the cutting arm inner cavity sealing device (9).
7. The structure of claim 6, wherein the spray structure is arranged in the cutting part of the heading machine: the water inlet connecting shaft (10) penetrates through the cutting arm inner cavity closing device (9) and is fixedly connected with the water inlet end of the cutting spindle inner cavity hole (6).
8. The structure of claim 7, wherein the spray structure is arranged in the cutting part of the heading machine: and a dynamic sealing device (11) is arranged at the contact position of the water inlet connecting shaft (10) and the cutting arm inner cavity sealing device (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010222015.8A CN111396045A (en) | 2020-03-26 | 2020-03-26 | Spraying structure in cutting part of heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010222015.8A CN111396045A (en) | 2020-03-26 | 2020-03-26 | Spraying structure in cutting part of heading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111396045A true CN111396045A (en) | 2020-07-10 |
Family
ID=71427592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010222015.8A Pending CN111396045A (en) | 2020-03-26 | 2020-03-26 | Spraying structure in cutting part of heading machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111396045A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863924A (en) * | 2021-09-18 | 2021-12-31 | 烟台南山学院 | Sealing device of spraying water system in tunneling machine |
-
2020
- 2020-03-26 CN CN202010222015.8A patent/CN111396045A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863924A (en) * | 2021-09-18 | 2021-12-31 | 烟台南山学院 | Sealing device of spraying water system in tunneling machine |
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