CN212337284U - Tooth holder with spray for digging machine - Google Patents

Abstract

The utility model relates to a cutting teeth seat of area spraying for excavating machinery, including tooth pedestal body, tooth cover and nozzle, tooth cover interference fit is in the hole of tooth pedestal body, be equipped with round annular water flowing groove and two annular seal ring grooves on hole and the pore wall of tooth cover cooperation region, annular water flowing groove is located between two annular seal ring grooves, and the seal ring inslot sets up the sealing washer, and the tooth pedestal is internal preceding, the rear of hole are equipped with front water course and back water course respectively, and front water course, annular water flowing groove and back water course communicate in proper order, and the import section of front water course is opening basin down, is located the installation bottom surface of tooth pedestal, the exit at the back water course is installed to the nozzle, treat the prong of installation pick in the export of nozzle towards the tooth cover. 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 tooth holder of area spraying for excavating machinery, includes tooth pedestal, tooth cover and nozzle, tooth cover interference fit is in the hole of tooth pedestal, the hole is the through-hole, be equipped with round annular water trough and two annular seal ring grooves on hole wall of hole and tooth cover cooperation region, annular water trough is located between two annular seal ring grooves, sets up the sealing washer in the seal ring groove, and the tooth pedestal is internal preceding, the rear of hole are equipped with front water course and back water course respectively, and front water course, annular water trough and back water course communicate in proper order, and the import section of front water course is the basin that the opening is down, is located the installation bottom surface of tooth pedestal, the nozzle is installed in the exit of back water course, the tooth point of pick is treated to install in the export of nozzle orientation tooth cover.

The hardness of the tooth sleeve is preferably between 58-62 HRC.

The outer opening part of the tooth sleeve is arranged into an outward flanging structure, the opening part of the inner hole of the tooth seat body is arranged into a cylindrical counter bore, and the outward flanging structure is in interference fit with the cylindrical counter bore.

The rear water channel can comprise a transverse water through hole and a longitudinal water through hole, one end of the transverse water through hole is communicated with the annular water through groove, the other end of the transverse water through hole is opened on the surface of the tooth seat body and is plugged through a mounting plug, one end of the longitudinal water through hole is communicated with the transverse water through hole, and the opening of the other end of the longitudinal water through hole on the surface of the tooth seat body serves as an outlet of the rear water channel.

The front waterway may further include a first water passage hole connected between the water tank and the annular water passage tank.

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

The angle between the outlet direction of the nozzle and 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 is in the exit of back 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 discloses a higher hardness's tooth cover and the hole interference fit of tooth pedestal can make the tooth pedestal avoid the direct impact of cutting counter-force, help prolonging the life of tooth pedestal, also help reducing the requirement to the tooth pedestal from another angle to reduce the cost of tooth pedestal.

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, the regional negative pressure that forms in nozzle top when utilizing nozzle jet stream, the initiative inhales dust, air and makes it 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 cross-sectional view of an embodiment of the present invention;

fig. 2 is a schematic structural view of a nozzle according to another embodiment of the present invention.

1. A tooth base body; 11. an annular water passing groove; 12. a water tank; 13. a first water passage hole; 14. a transverse water through hole; 15. a longitudinal water through hole; 2. a gear sleeve; 3. a nozzle; 31. a nozzle base; 32. a nozzle core; 33. a nozzle cover; 331. air holes; an O-shaped sealing ring; 5, a plug; 6. 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, including tooth pedestal 1, tooth cover 2 and nozzle 3, the tooth cover is used for installing pick 6, and the internal hole specification of tooth pedestal is confirmed usually, and the specification of tooth cover and the pick that 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. And a circle of annular water passing groove 11 and two annular sealing ring grooves are formed in the hole wall of the matching area of the inner hole and the gear sleeve, the annular water passing groove is positioned between the two annular sealing ring grooves, an O-shaped sealing ring 4 is arranged in each sealing ring groove, and static sealing is formed between the gear sleeve and the gear seat body so as to keep the sealing performance of the annular water passing grooves. The front and the rear of the inner hole in the tooth seat body are respectively provided with a front water channel and a rear water channel, the front water channel, the annular water passing groove and the rear water channel are sequentially communicated, and the inlet section of the front water channel is a water groove 12 with a downward opening and is positioned on the installation bottom surface of the tooth seat body. 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 way, 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.

The nozzle is installed in the exit of back 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 outward diffusion as the axis, can cover the whole prong of pick. The sprayed water is guided to the rear part of the inner hole from the front part of the inner hole through the transmission of the front water channel, the annular water passing groove and the rear water channel, and the sprayed water is sprayed out from the nozzle to realize rear 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. The nozzle, the front water channel, the rear water channel and the annular water passing groove form the main part of the spraying system in the tooth holder. 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 tooth holder may be optimised in any one or more of the following respects:

the wall thickness of the toothed sleeve is preferably between 3 and 5 mm.

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 outer opening part of the gear sleeve can be arranged into an outer flanging structure, the opening part of the inner hole of the gear seat body can be correspondingly arranged into a cylindrical counter bore, and the outer flanging structure is in interference fit with the cylindrical counter bore. Further, the end surface of the outer opening of the gear sleeve and the end surface of the opening of the inner hole of the gear seat body can be flush.

The back water channel can comprise a transverse water through hole 14 and a longitudinal water through hole 15, one end of the transverse water through hole is communicated with the annular water through groove, and the other end of the transverse water through hole is opened on the surface of the tooth seat body and is blocked by a mounting plug 5. One end of the longitudinal water through hole is communicated with the transverse water through hole, and the opening of the other end of the longitudinal water through hole on the surface of the tooth seat body is used as an outlet of the rear water channel. The outlet of the rear water channel and the outer opening of the gear sleeve face to the front upper part. The transverse and longitudinal directions do not require a perpendicular relationship and are merely used to distinguish the difference in the directions of the two water passage holes. In this embodiment, the lateral water passage holes extend substantially rearward and upward, and the longitudinal water passage holes extend substantially forward and upward.

The front waterway may further include a first water passage hole 13 connected between the water tank and the annular water passage tank.

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 rear 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 outlet of the nozzle, and dust and air can be actively sucked through the air passage 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 the air passage has a plurality of air passages, the outlets of the air passages are preferably arranged in a semi-surrounding 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 (10)

1. A tooth holder with spray for mining machinery is characterized in that: including tooth pedestal, tooth cover and nozzle, tooth cover interference fit is in the hole of tooth pedestal, the hole is the through-hole, be equipped with round annular water trough and two annular seal ring grooves on the pore wall of hole and tooth cover cooperation region, annular water trough is located between two annular seal ring grooves, sets up the sealing washer in the seal ring groove, and the tooth pedestal is internal the front and rear of hole are equipped with front water course and back water course respectively, and front water course, annular water trough and back water course communicate in proper order, and the import section of front water course is the basin that the opening is down, is located the installation bottom surface of tooth pedestal, the nozzle is installed in the exit of back water course, the export of nozzle is towards the prong of waiting to install the pick in the tooth cover.

2. The spray-carrying block for a mining machine according to claim 1, wherein: the hardness of the gear sleeve is between 58 and 62 HRC.

3. The spray-carrying block for a mining machine according to claim 2, wherein: the rear water channel comprises a transverse water through hole and a longitudinal water through hole, one end of the transverse water through hole is communicated with the annular water through groove, the other end of the transverse water through hole is opened on the surface of the tooth seat body and is plugged through a mounting plug, one end of the longitudinal water through hole is communicated with the transverse water through hole, the opening of the other end of the longitudinal water through hole on the surface of the tooth seat body serves as an outlet of the rear water channel, and the front water channel further comprises a first water through hole which is connected between the water groove and the annular water through groove.

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 spray-on block for mining machinery as claimed in claim 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 rear 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 spray pick block for a mining machine as claimed in claim 1, 2, 3, 4, 5, 6, 7, 8 or 9 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.

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