CN101413390A

CN101413390A - Inner atomizing inlet rotary seal structure

Info

Publication number: CN101413390A
Application number: CNA200810140282XA
Authority: CN
Inventors: 邓培园; 路雁
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-21
Filing date: 2008-09-21
Publication date: 2009-04-22
Anticipated expiration: 2028-09-21
Also published as: CN101413390B

Abstract

The invention discloses an internal spraying water inlet rotary seal structure for a development machine and a coal-winning machine. The structure of the internal spraying water inlet rotary seal structure is as follows: a gear cluster ganged transmission structure is adopted between a main shaft of a cutting arm and an output shaft of a speed reducer, so that end parts of the two shafts are disconnected to form a space; a spraying water inlet channel in the main shaft of the cutting arm is communicated with the end face of the main shaft of the cutting arm, namely a water inlet is arranged on the end face of the main shaft of the cutting arm; a cross section of the output shaft of the speed reducer is provided with a counter bore; and a T-shaped water guiding piece is arranged inside the space which is formed by the end parts of the two shafts. Because a water outlet of the T-shaped water guiding piece is directly inserted into the water inlet of the main shaft, the diameter of rotary seal is small and the linear velocity is low compared with radial seal of the prior gland cover under the condition of the same rotary speed of the main shaft, the service life of a sealing element is long and water leakage is difficult to generate. Moreover, leaked water can be exhausted out of the cutting arm through a diversion cut arranged under the condition of poor sealing of inlet water, and damage can not be caused on the transmission structure in the cutting arm.

Description

A kind of inner atomizing inlet rotary seal structure

Technical field

The present invention relates to mine excavation equipment, relate in particular to the internal spraying structure of development machine and coal-winning machine.

Background technology

The main shaft of the cutting arm of existing development machine and coal-winning machine all adopts inner spline housing to connect with the connecting mode of reducer output shaft, and this connecting mode makes that the atomizing inlet road in the main shaft must be from the main shaft lateral inflow.The hermetically-sealed construction of this lateral inflow is, a water inlet cover is installed in main shaft lateral inflow mouth position, and water inlet cover circumference has the hole that communicates with water inlet, and a circle groove is set, and groove cuts inlet opening on the wall casing corresponding to sanction.During main axis rotation, the water that comes from the outside enters main shaft atomizing inlet road by inlet opening and water inlet cover groove.The deficiency of this inlet rotary seal structure is, leaks because the long-term rotation wearing and tearing of water inlet cover produce gap series, leaks to enter to cut out to cut the arm casing and influence operate as normal and cause and can not spray.

Summary of the invention

The present invention is for solving the deficiency of above-mentioned technology, and a kind of inlet rotary seal structure of antileaking is provided for development machine and coal-winning machine internal spraying system.

Technical scheme is:

1. adopt gear train shaft coupling drive mechanism between cutting arm main shaft and the reducer output shaft, make to disconnect between two shaft ends to form a space.

2. the atomizing inlet road in the cutting arm main shaft communicates with cutting arm main shaft end face, and promptly water inlet is located on the cutting arm main shaft end face, is processed with counterbore on the reducer output shaft section.

3. a T font water part is installed in the space that two shaft ends form.The concrete structure of T font water part is: the two ends, the horizontal left and right sides of T font water part are respectively as coolant outlet end and protruding axle head, and vertical end down is as arm body union end; Be provided with inlet channel and spillway in arm body link, these two water channels and coolant outlet end connect, and also are provided with into water sealing and spilling water protection sealing on the coolant outlet end.

The mounting structure of T font water part is: the coolant outlet end inserts in the water inlet of cutting arm main shaft end face; protruding axle is installed in the counterbore that reducer shaft goes out shaft end by rolling bearing; arm body link is fixed on the cutting arm casing and from the cutting arm casing and exposes the termination, and the termination is connected with spilling water protection water pipe with outside water inlet pipe.

Gear train shaft coupling drive mechanism recited above is: in the cutting arm casing by the pin-and-hole frame that fixedly cogs, three pairs of in-line gears of the circumferential directions of tooth rest, be processed with external tooth on main shaft and the reducer output shaft, by three pairs of common transfer torques of in-line gears.

Advantage of the present invention is:

1. because the delivery port of T font water part directly inserts the main shaft water inlet, make the rotatory sealing diameter little, to compare linear velocity low with original sealing shroud radial seal under the identical condition of the speed of mainshaft, so seal life is long, difficult generation is leaked.

So since be provided with spillway leak the protection effective.Under the situation of water inlet poor sealing, can make leaks in time discharges outside the cutting arm by spillway, and the drive mechanism to cutting arm inside does not cause damage.

Description of drawings

Further specify the structure of invention below in conjunction with the drawings and specific embodiments.

Fig. 1 is the front view of embodiment;

Fig. 2 is Figure 1A-A profile.

Marginal data: 1-cutting arm casing, 2-tooth rest, 3-in-line gears; the 4-reducer output shaft, 5-counterbore, the protruding axle of 6-; 7-T font water part, 8-spillway, 9-inlet channel; the 10-fixture, the protection sealing of 11-spilling water, the 12-sealing of intaking; the 13-water inlet; 14-atomizing inlet road, 15-cutting arm main shaft, 16-space.

The specific embodiment

As shown in Figure 1, inlet rotary seal structure of the present invention is: adopt gear train shaft coupling drive mechanism between cutting arm main shaft 15 and the reducer output shaft 4, make to disconnect between two shaft ends to form a space 16.Atomizing inlet road 14 in the cutting arm main shaft 15 communicates with cutting arm main shaft 15 end faces, and promptly water inlet is located on cutting arm main shaft 15 end faces, is processed with counterbore 5 on reducer output shaft 4 sections.In the space 16 that two shaft ends form, T font water part 7 is installed.

The concrete structure of described T font water part 7 is: the two ends, the horizontal left and right sides of T font water part 7 are respectively as coolant outlet end and protruding axle head, and vertical end down is as arm body union end; Be provided with inlet channel 9 and spillway 8 in arm body link, these two water channels and coolant outlet end connect, and also are provided with water inlet sealing 12 and three road spilling water protection sealings 11 in six roads on the coolant outlet end.

The mounting structure of T font water part 7 is: the coolant outlet end inserts in the water inlet 13 of cutting arm main shaft 15 end faces; protruding axle 6 is installed in the counterbore 5 of reducer shaft shaft 4 end faces by rolling bearing; arm body link is fixed on the cutting arm casing 1 and from cutting arm casing 1 by fixture 10 and exposes the termination, and the termination is connected with spilling water protection water pipe with outside water inlet pipe.

Gear train shaft coupling drive mechanism recited above is: in cutting arm casing 1 by the pin-and-hole frame 2 that fixedly cogs, the circumferential directions of tooth rest 2 has three pairs of in-line gears 3, be processed with external tooth on cutting arm main shaft 15 and the reducer output shaft 4, by three pairs of in-line gears, 3 common transfer torques.

Claims

1, a kind of inner atomizing inlet rotary seal structure is characterized in that, adopts gear train shaft coupling drive mechanism between cutting arm main shaft and the reducer output shaft, makes to disconnect between two shaft ends to form a space; Atomizing inlet road in the cutting arm main shaft communicates with cutting arm main shaft end face, and promptly water inlet is located on the cutting arm main shaft end face, is processed with counterbore on the reducer output shaft section; A T font water part is installed in the space that two shaft ends form;

The concrete structure of T font water part recited above is: the two ends, the horizontal left and right sides of T font water part are respectively as coolant outlet end and protruding axle head, and vertical end down is as arm body union end; Be provided with inlet channel and spillway in arm body link, these two water channels and coolant outlet end connect, and also are provided with into water sealing and spilling water protection sealing on the coolant outlet end;

The mounting structure of T font water part recited above is: the coolant outlet end inserts in the water inlet of cutting arm main shaft end face, protruding axle is installed in the counterbore that reducer shaft goes out shaft end by rolling bearing, arm body link is fixed on the cutting arm casing and from the cutting arm casing and exposes the termination, and the termination is connected with spilling water protection water pipe with outside water inlet pipe;