CN212774287U

CN212774287U - Tooth holder with spray for digging machine

Info

Publication number: CN212774287U
Application number: CN202021960133.0U
Authority: CN
Inventors: 黄秋来; 史春祥; 胡俊; 马子尧; 刘凯; 李辉; 王广; 刘峰; 张晓永; 路潞; 郭委; 陈鹏; 蔡正华; 朱孝仁
Original assignee: Tiandi Shanghai Mining Equipment Technology Co Ltd; Tiandi Science and Technology Co Ltd Shanghai Branch
Current assignee: Tiandi Shanghai Mining Equipment Technology Co Ltd; Tiandi Science and Technology Co Ltd Shanghai Branch
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-03-23
Anticipated expiration: 2030-09-09

Abstract

The utility model relates to a cutting pick toothholder of spraying is taken to mining machinery, including tooth pedestal and nozzle, be equipped with the hole that is used for installing the pick toothholder on the tooth pedestal, the internal water course that is equipped with of toothholder, the induction zone of water course is opening basin down, is located on the tooth pedestal installation bottom surface in the place ahead of hole, the export of water course is located the rear of hole, the nozzle is installed the exit of water course, the tooth point of installation pick is treated to the export orientation of nozzle, the water course is including the first limbers, second limbers hole and the third limbers hole that communicate gradually, the import of first limbers hole with the basin communicates with each other, and the export of third limbers hole is regarded as the export of water course. The utility model discloses cooling dust fall effect is showing, and is difficult for blockking up the nozzle, can save the space that sets up spraying system on the drum body, increases the quantity of arranging the toothholder, improves the cutting ability of cylinder.

Description

Tooth holder with spray for digging machine

Technical Field

The utility model relates to a pick toothholder from taking spraying structure, can be used in the cutting device of multiple mining equipment including coal-winning machine cylinder.

Background

Taking a drum of a coal mining machine as an example, the tooth holder is an important part welded on a drum body for installing cutting teeth to realize coal cutting. The existing tooth holder is not provided with spray and is provided with front spray, when the tooth holder without the spray is adopted, a nozzle needs to be arranged on blades of the roller body for matching each tooth holder, spray water is sprayed out from the nozzle to cool and reduce dust at the tooth tip of the cutting tooth, the tooth holder is the most common, the defect is that a larger arrangement area needs to be occupied, and therefore the number of the tooth holders capable of being fixed on the roller body is small. When a holder with a front spray is used, the spray water is sprayed from the front side of the cutting pick toward the tip. The tooth holder with the front spray has the advantages that the spray function is realized without occupying the surface area of the drum body, so the arrangement number of the tooth holders can be increased, and the strength of the drum body is increased because a spray water channel is not required to be arranged on the drum body, but the defects are obvious, for example, because of the shielding of cutting materials, the spray water cannot be sprayed to the tooth tip of the cutting tooth generally, and the real cooling effect cannot be realized; a large amount of smoke and dust drift to the pick rear, spout spray water in pick the place ahead and do not play how much dust fall effect, and the buggy drops in pick the place ahead moreover, forms and piles up the region, very easily blocks up the nozzle.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a mining machinery is with toothholder of area spraying can not only save installation space, improves the intensity of the cylinder body, and its mist cooling dust fall's effect is more excellent moreover.

The utility model discloses a main technical scheme has:

the utility model provides a mining machinery is with toothholder of area spraying, includes toothholder body and nozzle, is equipped with the hole that is used for installing the pick facing on the toothholder body, the hole is the through-hole, is equipped with the water course in the toothholder body, and the induction zone of water course is opening basin down, is located on the toothholder body installation bottom surface in the place ahead of hole, the export of water course is located the rear of hole, the nozzle is installed the exit of water course, the tooth point of pick is treated to install in the export orientation toothholder of nozzle.

The water channel may include a first water passage hole, a second water passage hole, and a third water passage hole, which are sequentially communicated, an inlet of the first water passage hole is communicated with the water tank, and an outlet of the third water passage hole serves as an outlet of the water channel.

The first water through hole and the second water through hole are communicated through a fabrication hole, and the opening of the fabrication hole is plugged through a threaded connection plug.

Or the first water through hole and the second water through hole are communicated through a process hole, and the opening of the process hole is plugged through a welding plug.

A filter screen is preferably arranged at the inlet of the nozzle.

The angle between the direction of the outlet of the nozzle and the plane of the axis of the bore is preferably between 20 and 30 degrees.

The nozzle can include nozzle base, nozzle core and nozzle lid, and the spherical portion of nozzle core is spacing in the spherical groove that nozzle base and nozzle lid lock formed, and the delivery port of nozzle core is spacing in the column orifice department of nozzle lid and the angle changes along with the position adjustment of spherical portion, the lower part threaded connection of nozzle base the exit of water course.

And a water core is connected in the lower inner hole of the nozzle base in a threaded manner, and a spiral water tank is arranged on the outer circumference of the water core.

One or more air holes may be provided on the side wall of the nozzle cover.

The opening of the air hole on the outer wall of the nozzle cover can be arranged to be a cone with a large outer part and a small inner part, or the air hole is arranged to be a cone-shaped hole with a large outer part and a small inner part.

One or more air passages are preferably arranged in the tooth holder body, the outlet of the air passage is close to the nozzle, and the outlet direction of the air passage points to the upper part of the nozzle.

The utility model has the advantages that:

the utility model discloses a toothholder is from taking the back spraying, compares the toothholder that does not have the spraying function, can not only save the space that sets up spraying system on the drum body, increases the quantity of mountable toothholder, improves loading space and loading rate, can also improve the intensity of the drum body. More importantly, compare the toothholder of spraying before taking, the utility model discloses can ensure that the spray water directly sprays on the pick prong and do not receive blockking of material, consequently the cooling effect is obvious, the utility model discloses just can spray in the local implementation that the dust was concentrated, consequently press down dirt, dust fall effect more excellent, spray moreover and drop the space region who belongs to the difference with the material, the difficult jam of nozzle.

The utility model has the advantages that the spray nozzle with adjustable water outlet direction in a small range can change the spray height and adapt to more picks with different specifications; on the other hand, the center of the spraying direction deviates from the cutting tooth tip slightly to spray according to the actual situation.

The utility model discloses a water core that has spiral water tank on the outer circumference of installation in nozzle base's lower part hole can normally walk water, can prevent effectively again that the dust from the nozzle from getting into toothholder and cylinder, especially does not have under the water spun condition after the coal-winning machine shuts down, still can ensure the cleanness of toothholder and cylinder inside.

The utility model discloses a set up the air flue in the toothholder is internal, and/or set up the gas pocket on the lateral wall of the nozzle lid of angle adjustable nozzle, can form the negative pressure in nozzle top region when utilizing nozzle injection pressure rivers, and the initiative is inhaled dust, air and is made it to mix with spraying rivers, reduces the dust and wafts and escape, further improves the dust fall, presses down dirt effect.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the embodiment of FIG. 1;

fig. 3 is a schematic structural view of a nozzle according to another embodiment of the present invention.

Description of reference numerals:

1. a tooth base body; 12. a water tank; 13. a first water passage hole; 14. a second water through hole; 15. a third water through hole; 16. a fabrication hole; 2. a plug; 3. a nozzle; 31. a nozzle base; 32. a nozzle core; 33. a nozzle cover; 331. air holes; 4. a gear sleeve; 5. a cutting pick; 7. a water core.

Detailed Description

The utility model discloses a cutting pick seat of area spraying for mining machinery, as shown in fig. 1, 2, 3, including tooth pedestal 1 and nozzle 3, be equipped with the hole that is used for installing pick facing 4 on the tooth pedestal, the internal hole specification of tooth pedestal is confirmed usually, and the specification of the pick 5 that the facing and can install is also confirmed. The bore is typically a through bore. The gear sleeve is in interference fit with the inner hole of the gear seat body, so that the gear seat body is prevented from bearing direct impact from a cutting tooth, the inner hole of the gear seat body is protected, and the service life of the gear seat body is prolonged. A water channel is arranged in the tooth holder body, and the water channel bypasses the inner hole through the path in the tooth holder body. The inlet section of the water channel is a water tank 12 with a downward opening and is positioned on the tooth seat body mounting bottom surface in front of the inner hole, and the outlet of the water channel is positioned behind the inner hole. In this embodiment, the bottom surface of the tooth holder body is located at the front lower part of the tooth holder body, and the whole tooth holder body is inclined towards the rear upper part. After the tooth holder body is fixedly arranged on the roller body, the water tank and the surface of the roller body form a spray water tank in a surrounding manner, and the water tank is communicated with a water supply waterway of spray water and is a main inlet of the spray water entering the tooth holder. The outline of the water tank 12 in this embodiment is approximately square. The front and rear parts are determined from the rear to the front according to the approximate trend of the position change of the cutting pick along with the rotation of the roller body.

Nozzle 3 is installed the exit of water course, the exit of nozzle is to the prong of treating the installation pick in the tooth cover, and during the spraying, the central axis that the water smoke used the nozzle basically is conical outdiffusion as the axis, can cover the whole prong of pick. Through the transmission of water course, the spraying water is guided to the rear of hole from the place ahead of hole, and the spraying water is spout from the nozzle, realizes the back spraying. According to the position change trend of pick during operation, the cutting material is mainly concentrated on the front side of pick, and water smoke is sheltered from by the material when carrying out preceding spraying, almost can not direct contact to the pick, consequently the cooling dust fall effect is all relatively poor, and when adopting above-mentioned back spray structure, water smoke can directly reach and contact the pick prong, and the spraying of limit cutting edge carries out comparatively abundant cooling to the pick, reduces the pick temperature, extension pick life-span. Because the cutting pick moves forward for cutting, the generated smoke and dust drifts backwards, and the dust can be eliminated in time by adopting the rear spraying structure, so the dust settling effect is better. Moreover, because the cut materials mainly fall in front of the cutting teeth and the rear part is relatively clean, the rear spraying structure is not easy to block the nozzle. Adopt the toothholder that has this interior water-spraying system can save the space that sets up water-spraying system originally on the cylinder, and the space of saving can be used to increase the quantity of blade and the quantity of toothholder on the cylinder, for example adopt the toothholder that has not taken the spraying now, can only arrange 8 toothholders on every cylinder blade, adopt the utility model discloses a behind the toothholder, can arrange 12 toothholders on every cylinder blade, toothholder quantity has increased 50%, consequently can show the loading space and the loading rate that improve the cylinder, still because a lot of water channel structures have been saved in the cylinder, the intensity of the cylinder also obviously improves.

The water passage may include a first water passage hole 13, a second water passage hole 14, and a third water passage hole 15, which are sequentially communicated, an inlet of the first water passage hole is communicated with the water tank, and an outlet of the third water passage hole serves as an outlet of the water passage.

The tooth holder may be optimised in any one or more of the following respects:

the hardness of the gear sleeve is preferably between 58 and 62HRC, so that the wear resistance can be effectively improved, the rigidity and the strength of an assembly body formed by the gear sleeve and the gear seat body can be improved, the requirement on the gear seat body is correspondingly reduced, and the overall economy of the gear seat is improved.

The first water through hole and the second water through hole are communicated through an auxiliary hole 16, the opening of the auxiliary hole can be plugged through a threaded connection plug, or the opening of the auxiliary hole can also be plugged through a welding plug 2. The outlet of the water channel and the opening of the inner hole face the front upper part.

The inlet of the nozzle is preferably provided with a filter screen (not shown in the figures).

The angle between the outlet direction of the nozzle and the axis of the bore (i.e. the spray angle) is preferably between 20 and 30 degrees.

The nozzle preferably comprises a nozzle base 31, a nozzle core 32 and a nozzle cover 33, the nozzle base is in threaded connection with the nozzle cover, the spherical part of the nozzle core is limited in a spherical groove formed by buckling the nozzle base and the nozzle cover, the water outlet of the nozzle core is limited at the cylindrical orifice of the nozzle cover, the angle of the water outlet can be changed along with the direction adjustment of the spherical part, and the lower part of the nozzle base is in threaded connection with the outlet of the water channel. The spherical portion is adjustable over a cone angle of 2 alpha (typically 12 deg.). The spray direction of the nozzle is adjustable, a user can adjust the nozzle to the best angle of the spray effect according to actual needs, the nozzle can also adapt to cutting teeth of various specifications, and the spray effect required by the cutting teeth of different specifications is met.

One or more air holes 331 are preferably provided in the sidewall of the nozzle cover. The opening of the air hole on the inner wall of the nozzle cover is closer to the water outlet of the nozzle core, when the nozzle sprays water, negative pressure is formed easily at the position, therefore, air carrying dust outside the nozzle cover is sucked into the nozzle cover through the air hole, the air, the dust and the spraying water flow are mixed and sprayed out along with the water flow from the top outlet of the nozzle cover, and the certain degree of dust fall is realized.

The central height of the air hole is preferably flush with the tail end of the water outlet of the nozzle core, so that the air outlet of the air hole is opposite to the center of the negative pressure area, and the suction force is generated as much as possible. The air inlet of the air hole, namely the opening of the air hole on the outer wall of the nozzle cover, can be set to be a cone with a large outer part and a small inner part, or the air hole can be integrally set to be a cone-shaped hole with a large outer part and a small inner part, so that the air and dust are accelerated in the process of entering the air hole, and the mixing of the air and the dust with water flow can be promoted.

The water core 7 is preferably arranged in an inner hole in the lower portion of the nozzle base, the water core is in threaded connection with the nozzle base, and a spiral water groove is formed in the outer circumference of the water core to guarantee water inlet of the nozzle. The water core can effectively prevent dust from entering the tooth holder and the roller from the nozzle, and particularly can still ensure the cleanness of the interior of the tooth holder and the interior of the roller under the condition that no water is sprayed out after the coal mining machine is shut down.

The tooth holder body is also preferably provided with one or more air passages, the outlet of the air passage is close to the nozzle, preferably behind the nozzle, and the outlet direction of the air passage points to the position above the nozzle and close to the nozzle. When the nozzle sprays water, a negative pressure region is formed in an area above the nozzle outlet, and dust and air can be actively sucked through the air flue to be mixed with spray water flow, so that dust flying and escaping are reduced, the dust falling efficiency is improved, and the dust falling effect is improved. The inlet position of the air passage is not limited, and for example, the inlet position may be on the rear outer side surface of the tooth holder body, preferably toward a target region or a focal region of dustfall.

When there are a plurality of air passages, the outlets of the air passages are preferably arranged in a semi-enclosed arrangement around the rear of the nozzle.

When the air passage and the air holes exist at the same time, air and dust are guided to flow to the nozzle through the air passage, then enter the nozzle cover from the outside through the air holes, and then are mixed with spray water flow.

Claims

1. A tooth holder with spray for mining machinery is characterized in that: including tooth pedestal and nozzle, be equipped with the hole that is used for installing the tooth cover on the tooth pedestal, the hole is the through-hole, is equipped with the water course in the tooth pedestal, and the induction zone of water course is opening basin down, is located on the tooth pedestal installation bottom surface in the place ahead of hole, the export of water course is located the rear of hole, the nozzle is installed the exit of water course, treat the prong of installing the pick in the export orientation tooth cover of nozzle.

2. The spray-carrying block for a mining machine according to claim 1, wherein: the water channel further comprises a first water through hole, a second water through hole and a third water through hole which are sequentially communicated, an inlet of the first water through hole is communicated with the water tank, and an outlet of the third water through hole is used as an outlet of the water channel.

3. The spray-carrying block for a mining machine according to claim 2, wherein: the first water through hole and the second water through hole are communicated through a process hole, and the opening of the process hole is plugged through threaded connection or welding plugs.

4. The spray-carrying block for a mining machine according to claim 2, wherein: and a filter screen is arranged at the inlet of the nozzle.

5. The spray-carrying block for a mining machine according to claim 2, wherein: the included angle between the outlet direction of the nozzle and the axis of the inner hole is 20-30 degrees.

6. A machine-used spray pick block as claimed in claim 1, 2, 3, 4 or 5, wherein: the nozzle comprises a nozzle base, a nozzle core and a nozzle cover, the nozzle base is in threaded connection with the nozzle cover, the spherical part of the nozzle core is limited in a spherical groove formed by buckling the nozzle base and the nozzle cover, the water outlet of the nozzle core is limited at the columnar orifice of the nozzle cover, the angle of the water outlet of the nozzle core is changed along with the azimuth adjustment of the spherical part, and the lower part of the nozzle base is in threaded connection with the outlet of the water channel.

7. The spray-carrying block for a mining machine according to claim 6, wherein: and a water core is connected in the lower inner hole of the nozzle base in a threaded manner, and a spiral water tank is arranged on the outer circumference of the water core.

8. The spray-carrying block for a mining machine according to claim 6, wherein: one or more air holes are arranged on the side wall of the nozzle cover.

9. The spray-carrying block for a mining machine according to claim 8, wherein: the opening of the air hole on the outer wall of the nozzle cover is set to be a cone with a large outer part and a small inner part, or the air hole is set to be a cone-shaped hole with a large outer part and a small inner part.

10. A machine-used spray pick block as claimed in claim 1, 2, 3, 4 or 5, wherein: one or more air passages are further arranged in the tooth holder body, the outlet of each air passage is close to the nozzle, and the outlet direction of each air passage points to the upper side of the nozzle.

11. The spray-carrying block for a mining machine according to claim 6, wherein: one or more air passages are further arranged in the tooth holder body, the outlet of each air passage is close to the nozzle, and the outlet direction of each air passage points to the upper side of the nozzle.

12. The spray-carrying block for a mining machine according to claim 7, wherein: one or more air passages are further arranged in the tooth holder body, the outlet of each air passage is close to the nozzle, and the outlet direction of each air passage points to the upper side of the nozzle.

13. The spray-carrying block for a mining machine according to claim 8, wherein: one or more air passages are further arranged in the tooth holder body, the outlet of each air passage is close to the nozzle, and the outlet direction of each air passage points to the upper side of the nozzle.

14. The mining machine toothed socket with a spray according to claim 9, characterized in that: one or more air passages are further arranged in the tooth holder body, the outlet of each air passage is close to the nozzle, and the outlet direction of each air passage points to the upper side of the nozzle.