CN201297127Y

CN201297127Y - Handheld emulsion liquid drilling machine used in coal mine

Info

Publication number: CN201297127Y
Application number: CNU2008201671484U
Authority: CN
Inventors: 尤新荣
Original assignee: NINGBO HELM TOWER HYDRAULIC MOTOR CO Ltd
Current assignee: NINGBO HELM TOWER HYDRAULIC MOTOR CO Ltd
Priority date: 2008-10-30
Filing date: 2008-10-30
Publication date: 2009-08-26
Anticipated expiration: 2018-10-30

Abstract

A handheld emulsion liquid drilling machine used in a coal mine is suitable for drilling operation of coal mining working face or excavation working face, the emulsion liquid drilling machine includes an emulsion liquid motor and a planetary gear accelerating mechanism and comprises a front cover, a rear cover, a stator, a rotor, a bearing, an output shaft, a front bearing block and a through-flow disc provided with an on-off valve, plunger holes are formed on the rotor, a moveable plunger, a roller and a dynamic sealing device are mounted in the plunger holes and the roller is in contact and matched with the inner wall of the stator, a distributing inlet and a distributing outlet on a distributing shaft are matched and communicated with the plunger holes, and a planetary gear is also mounted on the rotor and meshed with an internal ring gear on the front cover and a center gear on the output shaft respectively. The utility model adopts the design of isolation of power source of the emulsion liquid and the lubricating oil, the adverse factors such as poor performance of viscosity, and performance of lubrication of the emulsion liquid, etc., can be avoided, and the emulsion liquid drilling machine adopts the design that circular static pressure is used for supporting the distributing shaft which distributes flows in the radial direction, therefore, the mechanical efficiency and the volume efficiency of the emulsion liquid drilling machine are improved, the abrasion of core components is reduced, the volume and the weight of the emulsion liquid drilling machine are reduced, the cost is reduced, and the service life and the quality-power ratio of the drilling machine are improved.

Description

Hand-hold emulsion boring machine for coal mine

Technical field

The utility model relates to a kind of emulsion boring machine, particularly a kind ofly be applicable to that coal mining or driving face and other have emulsion power and the requirement of explosion proof strictness, carry out the hand-hold emulsion boring machine for coal mine that bore operations such as gas drainage under suction, pressure release, bolt support use.

Background technology

Show the general hand-held electric coal drill that is still that adopts on the colliery, but it exists potential safety hazard, to the coal seam geological condition bad adaptability, be not suitable at high humidity, high gas and the coal-face work of dust explosion risk is arranged, studying both at home and abroad for this reason always and can effectively administer the equipment of methane accumulation on the coal-face, various rig safe in utilization exploitations are imminent, adopting emulsion is very easily as power source to Coal Production, emulsion is to be mixed with water by the emulsion additive, itself just has fire-extinguishing function concurrently, and emulsion is that the colliery disposes the power source shared with the colliery support on the spot, but also there is defective in emulsion, low as viscosity, antirust ability is poor, lubrication property is poor, use its floor low as working media, application life is short, and metal material is had very strong corrosiveness, make hydraulic motor pair of friction components wearing and tearing aggravation, amount of leakage increases.

Patent No. CN94231687.8 " hand-held Wet-dry emulsion boring machine " is though provide a kind of cavity that emulsion is directly entered all friction pairs of motor, but its manufacturing cost height, poor reliability, life-span weak point, and adopt the radial plunger piston motor of three eccentric rotary axles, six plungers, valve distributing construction, make motor running have very big pulsation pole not steady, vibration is big during hand-held, noise is big, operator's fatiguability.

Patent No. CN200720111576.0 " emulsion boring machine for coal mine " has adopted with the offset piston structure of high-pressure emulsion as working media, adopt hydraulic oil to have defective inflammable, explosive potential safety hazard though solved existing hydraulic motor as working media, but its antirust rotary piston adopts engineering plastics, engineering plastics can't satisfy again with pumping source 31.5MPa pressure and be complementary, have to adopt step-down to use again, thereby cause that efficient is low, volume big, operation inconvenience.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of hand-hold emulsion boring machine for coal mine is provided, suit to use in the coal seam under different geological conditionss, its compact conformation, volume are little, and flexible operation, matter merit are than high, use long, the environmental protection and energy saving of more safe and reliable, life-span, practicality is good.

The technical scheme in the invention for solving the above technical problem is: hand-hold emulsion boring machine for coal mine comprise stator and before, bonnet is fixedly connected into integral body, the front-end bearing pedestal that has bearing is fixed on the protecgulum, the output shaft that links into an integrated entity with rotor is supported by bearing, the through-flow dish that on-off valve is installed is fixed on the bonnet, an end that connects pintle on the described rotor, pintle end in addition is fixed on the bonnet, have on the periphery of described pintle, go out assignment hole, inlet opening and static seal, the centre is emulsion oil return B chamber, on the described rotor plunger hole is arranged, movably plunger and roller and movable sealing are installed in the plunger hole, and roller contacts cooperation with stator inner wall, describedly advance, going out assignment hole communicates with described plunger hole cooperation, described movable sealing is the dynamic seal ring first, second is used to isolate emulsion work C chamber and lubricating fluid D chamber, described static seal is a static seal circle first, second is used for the isolation in emulsion feed liquor A chamber and the isolation between emulsion feed liquor A chamber and lubricating fluid D chamber, planetary gear also is installed on the described rotor, respectively with protecgulum on ring gear and the central gear on output shaft engagement.

Compared with prior art, advantage of the present utility model is: 1, adopted the isolation design of power source emulsion and lubrication oil, be that the emulsion work done just promotes plunger and does radial alignment motion, and as the part rotor and the plunger of power conversion, roller, crucial friction pair such as stator is in good oil lubrication state, make the viscosity characteristics of emulsion poor, antirust ability is poor, unfavorable factors such as lubrication property difference are avoided, and its is explosion-proof, environmental protection, energy-conservation, the advantage that the emulsion pumping source can obtain on the spot is fully utilized, 2, at the low characteristic of emulsion viscosity, break through the design of traditional piston motor end face axial flow and change pintle design into by annular hydrostatic support, the core part rotor that makes the energy transmission is in the radial force balance, eliminated axially additional hydraulic coupling, make its power output big, output torque is big, pintle forms the pressure oil film with rotor in a circumferential direction, rotor rotation is played supplemental support and guide effect, improved the mechanical efficiency of product, volumetric efficiency, the wearing and tearing of part have been reduced, make product have higher starting efficiency again, application life, pintle directly inserts rotor center in addition, dwindled the axial dimension of hand-hold emulsion boring machine for coal mine greatly, thereby reduced the volume and weight of product, improved the matter merit ratio of product.3, the enclosed planetary gear speedup structure that adopts rotor and planet carrier to unite two into one has reduced the weight and volume of product, reduces cost, and improves reliability of products.4, rotor adopts the self-aligning bearing supporting, make rotor have the semifloating function, can eliminate the influence that mismachining tolerance causes by automatic capturing in rotation, rotor and planet carrier are that one also makes speed increasing mechanism have the semifloating function, thereby have improved the functional performance and the application life of rig.

Description of drawings

Fig. 1, structural representation of the present utility model.

The F of Fig. 2, Fig. 1-F view (flow schematic diagram of the present utility model).

The E of Fig. 3, Fig. 1-E view (the utility model planetary gear construction schematic diagram).

Fig. 4, pintle structural representation.

The G of Fig. 5, Fig. 4-G view.

Fig. 6, isolating seal schematic diagram of the present utility model (partial enlarged drawing among Fig. 1).

Fig. 7, rotor upper plug pore size distribution alternative plan structural representation.

The specific embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is further described.

Pintle 14 is cylindric centre, and through hole is arranged is emulsion oil return B chamber, the radial surface direction have uniform even number (or odd number) be the mounting hole shape into and out of

assignment hole

24,25, communicate and do not communicate with the B chamber of pintle 14 centres respectively into and out of

assignment hole

24,25, and still be the twice of the concavo-convex number on the stator 7 inwall concave-convex curved surfaces 22 into and out of identical its summation of number of

assignment hole

24,25, pintle 14 1 ends only have inlet opening 26, the other end have separately into and out of

assignment hole

24,25 half and half, as Fig. 2, Fig. 3, shown in Figure 4.

On-off valve 13 is installed in the through-flow dish 11, through-flow dish 11 and bonnet 15 are screwed and are integral, one end of pintle 14 is fixing by alignment pin and screw and bonnet 15, end inserts the rotor 16 that is positioned at stator 7 centers in addition, go forward side by side, go out

assignment hole

24,25 even number (or the odd number) plunger holes 23 uniform with rotor outer surface match, plunger 9 and roller 8 are housed in the plunger hole 23, plunger 9 can radially slide in plunger hole, roller 8 contacts with 22 cooperations of stator 7 inwall concave-convex curved surfaces, and puts into plunger hole 25 with dynamic seal ring first 17 lubrication oil of upper end and the power source emulsion of lower end are kept apart.

Stator 7 is screwed with forward and backward

lid

5,15 respectively and is integral, and rotor 16 is by self-aligning bearing 6 supportings that are fixed on the protecgulum 5.

Planetary gear 4 is directly installed on the rotor 16 by composite bearing, saved planet carrier also with protecgulum 5 on ring gear 20 engagements, with centre wheel 21 engagements on the output shaft 1, output shaft 1 is that gear shaft is planetary centre wheel, by two back to back angle contact spring bearings, 3 supportings that are installed on the front-end bearing pedestal 2, front-end bearing pedestal 2 is screwed on an end face of protecgulum 5, as shown in Figure 1.

On the protecgulum 5 with pintle 14 on inlet opening 26 places of communicating be the A chamber, it is the admission chamber of high-pressure emulsion, carry out static seal by static seal circle first 12 and static seal circle second 27, the B chamber is the emulsion oil back chamber, plunger hole lower end on the rotor 16 is the emulsion working chamber for the C chamber, and for the D chamber is lubricated sap cavity, C chamber and D chamber are isolated by dynamic seal ring first 17, dynamic seal ring second 10 between bonnet 15 and rotor, isolate with static seal sealing ring second 12 between A chamber and D chamber, as shown in Figure 5.

When hand-held emulsion boring machine for coal mine is worked, high-pressure emulsion is through on-off valve 13, through-flow dish 11 enters the inlet opening 26 on the pintle 14, flow to it communicates through inlet opening and to go out assignment hole 25, enter the plunger hole 23 on the rotor 16 at last, the high-pressure emulsion that enters plunger hole promotes plunger 9 and roller 8 and slides outward and act on concave-convex curved surface 22 on stator 7 inwalls, when roller 8 when concave-convex curved surface 22 on the stator 7 contacts, stator 7 is given 8 one reaction forces of roller, this reaction force resolves into tangential force and radial load, because of plunger 9 is last, under the mutual balance of its radial load that is symmetrically distributed offset, only surplus tangential force passes to rotor 16 through roller 8 and plunger 9, make rotor rotation and ring gear 20 engagements on the planetary gear on the rotor 16 4 and centre wheel 21 engagements and protecgulum 5, the rotation of rotor is passed to output shaft 1 make its rotation, thereby reach needed rotating speed of rig and torque.

As shown in Figure 2, rotor 16 is in continuous rotating process, plunger 9 in the plunger hole 23 of rotor 16, roller 8 outwards moves under the promotion of high-pressure emulsion, the concave surface at the H place on roller 8 and stator 7 concave-convex curved surfaces 22 contacts, plunger 9 is pushed back plunger hole, continuing to promote the rotor clockwise direction by epitrochanterian tangential force rotates, when roller 8 forwards the highest K of the convex surface position of concave-convex curved surface 22 to from the H position, at this moment the emulsion that power conversion pressure has been reduced communicates with emulsion oil return B chamber on the pintle 14 goes out assignment hole 25, just flow back to the B chamber and flow to through-flow dish 11 again through going out assignment hole 25, be that rotor revolves to turn around a plurality of assignment holes 24 that advance are arranged simultaneously, send high-pressure emulsion to plunger hole 23, there is the low pressure emulsion in a plurality of plunger holes to get back to the B chamber synchronously through going out assignment hole 25, carry out the recovery of emulsion, so constantly circulation drives output shaft 1 rotation by rotor 16, drives load emulsion boring machine rotation work again.

Claims

1, a kind of hand-hold emulsion boring machine for coal mine, comprise stator (7) and before, bonnet (5), (15) be fixedly connected into integral body, the front-end bearing pedestal (2) that has bearing is fixed on the protecgulum (5), and the output shaft (1) that rotor (16) links into an integrated entity is supported by bearing, the through-flow dish (11) that on-off valve (13) is installed is fixed on the bonnet (15), it is characterized in that described rotor (16) upward connects an end of pintle (14), pintle (14) end in addition is fixed on the bonnet (15), have on the periphery of described pintle (14), go out assignment hole (24), (25), inlet opening (26) and static seal, the centre is emulsion oil return B chamber, plunger hole (23) is arranged on the described rotor (16), movably plunger (9) and roller (8) and movable sealing are installed in the plunger hole (23), and roller (8) contacts cooperation with stator (7) inwall, describedly advance, go out assignment hole (24), (25) communicate with described plunger hole (23) cooperation, described movable sealing is the dynamic seal ring first, second (17), (10) be used to isolate emulsion work C chamber and lubricating fluid D chamber, described static seal is a static seal circle first, second (12), (27) be used for the isolation in emulsion feed liquor A chamber and the isolation between emulsion feed liquor A chamber and lubricating fluid D chamber, planetary gear (4) also is installed on the described rotor (16), respectively with protecgulum (5) on ring gear (20) and the centre wheel (21) on the output shaft (1) engagement.

2, hand-hold emulsion boring machine for coal mine according to claim 1, it is characterized in that being cylindric centre by described pintle (14), through hole is arranged is emulsion oil return B chamber, there is uniform even number to be advancing of mounting hole shape at radial surface, go out assignment hole (24), (25), advance, go out assignment hole (24), (25) communicate and do not communicate with the B chamber of pintle (14) centre respectively, advance, go out assignment hole (24), (25) identical its summation of number still is the twice of the concavo-convex number on stator (7) the inwall concave-convex curved surface (22), pintle (14) one ends have and advance, go out the identical inlet opening of assignment hole number (26), the other end has advancing separately, go out assignment hole (24), (25) half and half.

3, hand-hold emulsion boring machine for coal mine according to claim 1, an end that it is characterized in that described pintle (14) is fixing by alignment pin and screw and bonnet (15), and end inserts the rotor (16) that is positioned at stator (7) center in addition.

4, hand-hold emulsion boring machine for coal mine according to claim 1, it is characterized in that described planetary gear (4) is directly installed on the rotor (16) by composite bearing, output shaft (1) is by two back to back angle contact spring bearings (3) supporting that is installed on the front-end bearing pedestal (2), and described rotor (16) is bearing on the protecgulum (5) by self-aligning bearing (6).

5, hand-hold emulsion boring machine for coal mine according to claim 1, it is characterized in that described is that the uniform even number plunger hole (23) of even number and rotor (16) external surface matches into and out of assignment hole (24), (25), and described plunger hole (23) also can be arranged two misarrangement positions.