CN209011824U - Spline shell type development machine end face seal inner sprayer unit - Google Patents

Abstract

The utility model discloses spline shell type development machine end face seal inner sprayer units, including spline housing, it further include the second stationary ring, needle bearing, the spline housing outer wall is provided with land, the land shaft orientation flowing channel being connected and land radial flow path are opened up in land, the needle bearing is sleeved on spline housing outer wall, second stationary ring is sleeved on needle bearing outer wall, the stationary ring shaft orientation flowing channel being connected and stationary ring radial flow path are opened up in the second stationary ring, first wear ring and the second wear ring are embedded in the second stationary ring end face, inlay wear-resistant pad in spline housing land left side, two wear ring axial direction right sides correspond to land wear-resistant pad axial direction left side and form end face seal pair, land shaft orientation flowing channel is set to be interconnected with stationary ring shaft orientation flowing channel.The utility model solution existing rotary sealing appts service life is shorter and the service life can not be expected, the small nozzle that easily causes of internal spraying water operating pressure is frequently occluded, does not adapt to the problems such as anhydrous operating for a long time.

Description

Spline shell type development machine end face seal inner sprayer unit

Technical field

The utility model relates to large coal mine mechanical excavator internal spraying technology, specifically spline shell type development machine is used End face seal inner sprayer unit.

Background technique

Development machine is large coal mine tunnelling equipment, can be generated in closed coal mine roadway driving a large amount of dust and Spark causes safely great hidden danger to the health and lives of coal miner, the 600th in " safety regulations in coal mine (2016) " 36 articles, the 639th article propose new demand to coalcutter/development machine internal spraying function, and internal spraying mainly has reduction Dust concentration cooling pick, reduces gas density, prevents that spark acts on, and improves safety, improves working environment at coal mines Effect.

Existing development machine sealing structure are as follows: two or four sealing rings are installed in cut main shaft and water jacket circumferencial direction, by There is impurity to result in sealing ring failure leakage in cut main shaft rotation and big load eccentric wear in addition water, cooling water enters cantilever segment Water and oil emulsification cause bearing lubrication to fail and then damage, and finally result in operating mechanism's damage and shut down, cause seriously to damage to mine side It loses, so all closing or removing internal spraying system under existing development machine before mine, inadequate use is also only several days and can be used.So urgent A kind of new and effective internal spraying system is needed to solve underground coal mine environment and health safety issues.

Underground coal mine dust exceeding is one of main harm of coal mine, is to cause dust explosion accident, miner's consumption, shadow Ring the principal element of operator's sight etc..It is to generate since dust is mainly tunneling machine cutting coal petrography, so safety of coal mines is advised Range request development machine must be designed with the inner sprayer unit of reliable performance, realize that depositing dust when development machine work, pick is cooling, subtracts Spark-extinguishing function.Safety of coal mines operating instruction regulation development machine must open internal spraying when working, and by arrangement of nozzles in cutting On head by pick, is rotated when coal petrography cutting with cutterhead and spray high-pressure water mist and realize depositing dust, cooling, spark-extinguishing function. However the using effect of development machine internal spraying at work is all undesirable both at home and abroad at present, time long energy with one month or so, Short several days cannot also use, once and internal spraying damage leak be not easy to find, directly contribute cut main shaft bearing mistake Imitating damage causes entire development machine that cannot work, and replacement is very difficult, causes when many coal mine development machines work now not Using or directly dismantle internal spraying water pipe.Mainly existing internal spraying structure of tracing it to its cause is mostly that the radial rotary of a variety of materials is close Envelope, by certain linear velocity and cut main shaft friction, and the existing axial float of main shaft also has radial direction to development machine in actual operation Bounce, and sometimes because the limitation of working face condition cannot open it is spraying, anhydrous operating for a long time can cause rotatory sealing overheat and Fast Wearing and cause seal failure to be revealed.There are also part mining water qualities condition differences to be easy the impure more regular blocking of fouling Nozzle causes water spray effect to reduce or fail.Therefore new and effective internal spraying system must satisfy following requirement: 1, fitting Answer the working condition requirement of axial float and circular runout.2, the working condition requirement of anhydrous operating for a long time is adapted to.3, sealing material is solved Not wear-resisting problem.4, operating pressure reaches 0~12MPa, and high hydraulic pressure reduces the probability of spray nozzle clogging.5, new machine is installed and old The adaptability problem of machine transformation.Therefore it is badly in need of having a kind of new structure in the prior art to solve the problems, such as this.

Summary of the invention

The purpose of this utility model is to provide spline shell type development machine end face seal inner sprayer units, solve existing The rotary sealing appts service life is shorter and the service life can not be expected, internal spraying water operating pressure it is small easily cause nozzle be frequently occluded, Anhydrous operating for a long time is not adapted to, to the adaptability problem of new machine installation and retrofitting of used machine.

In order to achieve the above objectives, the utility model uses following technical solution, and spline shell type development machine end face is close Inner sprayer unit, including spline housing are sealed, further includes the second stationary ring, needle bearing, the spline housing outer wall is provided with land, in ring The land shaft orientation flowing channel being connected and land radial flow path are opened up in platform, the needle bearing is sleeved on spline housing outer wall, described Second stationary ring is sleeved on needle bearing outer wall, and the stationary ring shaft orientation flowing channel and stationary ring radial flow being connected are opened up in the second stationary ring Road is inlaid with the first wear ring and the second wear ring in second stationary ring right side, and the land left side is inlaid with wear-resisting The corresponding land wear-resistant pad is axial left simultaneously for pad, the first wear ring axial direction right side and the second wear ring axial direction right side End face forms end face seal pair, and land shaft orientation flowing channel is enable to be interconnected with the second stationary ring shaft orientation flowing channel, and the second stationary ring axially flows Road right output port will be between the first wear ring and the second wear ring, and the land radial flow path is connected to spline housing inner cavity.

The spline housing outer wall is also set with thrust metal, and thrust bearing, second stationary ring are set on thrust metal Axial left side abuts the first stationary ring, axial block face is opened up in first stationary ring inner cavity, between axial block face and thrust bearing Disc spring is set.

The round nut that the spline housing outer wall assembly is threadedly coupled, thrust metal left side is withstood in round nut right side.

The thrust metal realizes the axial limiting of thrust bearing using round nut as fulcrum；The disc spring, which is mounted on, to be pushed away On power bearing block axle journal.

The utility model has the advantages that compared with prior art

The spline shell type development machine is sleeve structure with end face seal inner sprayer unit, and the whole old tunneling machine cutting of replacement subtracts Inner spline housing between fast machine output main shaft and cantilever segment cut main shaft, it is easy for installation, it meets old development machine and is easy to transformation It is required that.The spline shell type development machine is located at cut main shaft end with end face seal inner sprayer unit, far from cutterhead vibration source, floats It is dynamic to be installed in cantilever segment cavity, axial float and the circular runout of cut main shaft can be well adapted to.The high abrasion of wear ring Property and axial compression under disc spring effect it is compensatory, the very good solution sealing pair service life short problem low with sealed pressure. Roomy hard alloy end face and the hard alloy end face relative friction auxiliary continual pressure of disc spring solve present rotation Sealing life is short and the small problem of water pressure.

Detailed description of the invention

Fig. 1 is the schematic diagram of the spline shell type development machine end face seal inner sprayer unit of the utility model；

Fig. 2 is that the spline shell type development machine of the utility model is mounted on spline shell type driving with end face seal inner sprayer unit State diagram in the cut main shaft of machine.

In figure: round nut 1, thrust metal 2, thrust bearing 3, disc spring 4, the first stationary ring 5, needle bearing 6, the second stationary ring 7, the first wear ring 8, the second wear ring 9, wear-resistant pad 10, spline housing 11, internal spline 12；

Spline shell type development machine end face seal inner sprayer unit 100, cut main shaft 200, cantilever segment 300, sealing ring water Cover 400, cutterhead 500.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Referring to Fig. 1, the utility model provides a kind of technical solution: spline shell type development machine end face seal internal spraying dress It sets, including spline housing 11, further includes the second stationary ring 7, needle bearing 6, the spline housing outer wall is provided with land, opens in land If the land shaft orientation flowing channel and land radial flow path that are connected, the needle bearing 6 is sleeved on 11 outer wall of spline housing, described second Stationary ring is sleeved on needle bearing outer wall, and the stationary ring shaft orientation flowing channel being connected and stationary ring radial flow path, institute are opened up in the second stationary ring It states and is inlaid with the first wear ring 8 and the second wear ring 9 in the second stationary ring right side, spline housing land left side is inlaid with resistance to Pad 10 is ground, the first wear ring axial direction right side and the second wear ring axial direction right side correspond to the land wear-resistant pad axis simultaneously End face seal pair is formed to left side, so that land shaft orientation flowing channel is interconnected with the second stationary ring shaft orientation flowing channel, the second stationary ring axis Will be between the first wear ring and the second wear ring to runner right output port, the land radial flow path is connected in spline housing Chamber.

Land axial direction left side be arranged wear-resistant pad 10, the first wear ring right side, the second wear ring right side with Wear-resistant pad forms end face seal pair.

The spline housing outer wall is also set with thrust metal 2, is set with thrust bearing 3 on thrust metal, described second is quiet Annulate shaft abuts the first stationary ring 5 to left side, opens up axial block face in first stationary ring inner cavity, axial block face and thrust bearing it Between be arranged disc spring 4.

The round nut 1 that the spline housing outer wall assembly is threadedly coupled, thrust metal left side is withstood in round nut right side.

The thrust metal realizes the axial limiting of thrust bearing using round nut as fulcrum；The disc spring, which is mounted on, to be pushed away On power bearing block axle journal, using thrust bearing as the first stationary ring of fulcrum push-tight, to compress wear ring and wear-resistant pad.

Shown in Fig. 2, spline housing 11 is sleeved in cut main shaft 200 by internal spline 12.

Spline housing 11 is rotated with cut main shaft 200, the first stationary ring 5 and the second stationary ring 7 by needle bearing 6 come with spline housing 11 do relative rotary motion, and external high pressure water is entered by the water inlet of the second stationary ring 7, resistance to by the first wear ring 8 and second Bull ring 9 is relatively moved to form end face seal face with wear-resistant pad 10 jointly, and high pressure water is made to enter flower by 11 bore passages of spline housing Key set is internal to access main shaft out by hose, and power bearing block 2 is fulcrum with round nut 1, realizes the axial limit of thrust bearing 2 Position；Disc spring 4 is mounted on 2 axle journal of thrust metal, with thrust bearing 2 for fulcrum push-tight the first stationary ring 5 and the second stationary ring 7, from And it compresses the first wear ring 8, the second wear ring 9 and wear-resistant pad 10 and achievees the effect that end face seal.

In the description of the present invention, it should be understood that temporald eixis or positional relationship are based on the figure Orientation or positional relationship is merely for convenience of description the utility model, rather than the device or element of indication or suggestion meaning must There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (4)

1. spline shell type development machine end face seal inner sprayer unit, including spline housing, which is characterized in that further include second quiet Ring, needle bearing, the spline housing outer wall are provided with land, and the land shaft orientation flowing channel and land diameter being connected are opened up in land To runner, the needle bearing is sleeved on spline housing outer wall, and second stationary ring is sleeved on needle bearing outer wall, in the second stationary ring The stationary ring shaft orientation flowing channel being connected and stationary ring radial flow path are inside opened up, second stationary ring is inlaid with the first wear ring in right side With the second wear ring, the land left side is inlaid with wear-resistant pad, the first wear ring axial direction right side and the second wear ring The corresponding land wear-resistant pad axial direction left side forms end face seal pair simultaneously for axial right side, makes land shaft orientation flowing channel and second Stationary ring shaft orientation flowing channel can be interconnected, the second stationary ring shaft orientation flowing channel right output port will in the first wear ring and the second wear ring it Between, the land radial flow path is connected to spline housing inner cavity.

2. spline shell type development machine end face seal inner sprayer unit according to claim 1, which is characterized in that the flower Key set outer wall is also set with thrust metal, and thrust bearing is set on thrust metal, and the second stationary ring axial direction left side abuts First stationary ring opens up axial block face in first stationary ring inner cavity, disc spring is arranged between axial block face and thrust bearing.

3. spline shell type development machine end face seal inner sprayer unit according to claim 2, which is characterized in that the flower Key covers the round nut that outer wall assembly is threadedly coupled, and thrust metal left side is withstood in round nut right side.

4. spline shell type development machine end face seal inner sprayer unit according to claim 3, which is characterized in that described to push away Power bearing block realizes the axial limiting of thrust bearing using round nut as fulcrum；The disc spring is mounted on thrust metal axle journal, First stationary ring protects thrust bearing and disc spring intracavitary in itself.