CN201053320Y - Low coal seam hydraulic drag coal cutter - Google Patents

Abstract

The utility model discloses a hydraulic traction coal mining machine for thin coal seam, consisting of a left road wheel, a right road wheel, a left traction part, a right traction part, a hydraulic transmission system, an electric control system, a left end rocker arm and a right end rocker arm, wherein, a machine body part adopts an integral machine body; the inside of the machine body is divided into a left traction cavity, a right traction cavity, a hydraulic transmission cavity and an electric control cavity. Parts in all boxes are respectively put into the cavities; an oil pump inside a hydraulic transmission box is integrated with various valves and auxiliary pumps used for the hydraulic transmission system into a whole; a gear pump of a hydraulic height adjusting system is serially connected with the back of the oil pump with a closed shell structure; the oil pump integration is placed outside the hydraulic transmission box, separated from an oil tank and arranged in front of the hydraulic transmission box from the side face of the machine body; the rocker arms at two ends of the machine body are hinged on the machine body through pin shafts. As the oil pump is integrated with various valves and auxiliary pumps used for the hydraulic transmission system into a whole and separated from the oil tank, the maintenance of the utility model cannot cause oil quality to be polluted, thereby increasing reliability.

Description

A kind of girdle hydraulic haulage shearer

Affiliated technical field

The utility model relates to a kind of girdle hydraulic haulage shearer, belongs to the coal-cutting machinery class.

Background technology

Coal-winning machine is placed on the transporter; The coal-winning machine mid portion is body; Left and right sides tractive unit is housed on the body; Hydraulic pressure and electric control system; Road wheel is housed on the tractive unit; Be meshed with the pin row on the transporter; Realize bivector traction; The body two ends are rocking arm; Be hinged on the body by bearing pin; Cylinder and spillplate are housed on the rocking arm; Be welded with helical blade and pick on the cylinder to realize coal cutting; The problem that exists is: one; Hydraulic system is except left and right sides hydraulic motor and reversal valve; All the other all are installed in the hydraulic drive section casing; Fill with oil in the casing; Also just become fuel tank; And the fault rate of hydraulic haulage shearer hydraulic system element is the highest parts of coal-winning machine rate of breakdown; Most of Hydraulic Elements all are placed in the casing; Make troubles for the dismounting of trouble shooting treatment element; Because the machine of mistake gap is little; Opening the loam cake Hydraulic Elements gets to come out in casing; Must manually dig out certain space by the roof above the hydraulic drive case; Allow support apparatus rise; Vacate certain space; Just can carry out service work; Increased non-cutting time; Because exposing fully above the fuel tank; The dust of coal-winning machine working face and top board and slag on every side are easy to enter into oil sump in the case; Cause the pollution of oil; The granule that pollutes oil enters pump; Motor; In the gap of the moving parts such as valve; Can cause wearing and tearing aggravation even parts jam between part; Malfunctioning, the Hydraulic Elements fault is that the pollution by oil causes more than 90%, processes the Hydraulic Elements fault in the fuel tank; Be easy to cause the pollution of oil, thereby produce vicious circle; Two, the coal-winning machine fuselage by about draw case, electric control box, hydraulic drive case and form independently parts, locate, constitute by the cylinder table and the cylindrical groove that protrude relatively between the casing separately by bolton, because there are two wall thickness in the casing interface and connecting bolt is taken certain space, make long that the coal-winning machine body does, coal-winning machine moves in the top that rises and falls, base plate, body is oversize easily to be stuck in cisco unity malfunction between transporter and the support apparatus, the mechanical shock vibrations are bigger, cause loosening to connecting bolt easily, the many body rigidity that can make of interface descend; Three, it is long-pending big and grow that single shaft shakes wall body, and this structure is slowed down by three grades of straight-tooth and realized, must satisfy transfer strength under assurance speed reducing ratio condition, thereby, it is big that back two-stage module is wanted, and the gear shape size strengthens, and the rocking arm size also increases thereupon; Rocking arm is long; The coal-winning machine job insecurity, and the wide coal-winning machine effect of loading coal that also influences has increased unsupported back span; The top board exposed area is big simultaneously, easily produces roof fall accident hidden danger; Four, coal mining machine roller adopts the single-screw lift angle, and because of angle is bigger, the coal cutting resistance is big, and electrical consumption power is big, overheatedly can reduce motor application life.

Summary of the invention

The utility model is at the problems referred to above, a kind of girdle hydraulic haulage shearer is provided, its adopt with oil pump with hydraulic haulage system used various valves, auxiliary pump is integrated separates with fuel tank, maintenance can not make oil be polluted, and can effectively shorten body length and improve the complete machine flexibility, dwindle rocking arm appearance and size, increase cut stability, avoid the dangerous generation of roof fall.

The technical scheme of the utility model is as follows: it is by left and right sides road wheel, left and right sides tractive unit, Hydraulic Power Transmission System, electrical control system and two ends, left and right sides rocking arm constitute, it is characterized by: fuselage partly adopts integral body, be separated into left and right sides pull chamber in the fuselage, the hydraulic drive chamber, automatically controlled chamber, component in each case are all packed in each cavity, in addition with the used various valves of oil pump in the hydraulic drive case and hydraulic haulage system, auxiliary pump is integrated, have the gear pump of a hydraulic pressure height-adjusting system of oil pump back serial connection of closure casing structure in this, with the integrated hydraulic drive case outside that places of above-mentioned oil pump, be separated with fuel tank, and being installed in hydraulic drive case front from the fuselage side, body two ends rocking arm is hinged on the body by bearing pin; Described left and right sides rocking arm, its drum drive motor reducing gear adopt two-stage straight-tooth, one-level planetary reduction gear to constitute; Described cylinder adopts the double helix lift angle, and it is the lift angle of coalingging than great-lift angle, and less lift angle is the entrance angle when coalingging.

The utility model adopts integral body, can reduce connection wall and the required space of bolt mounting or dismounting between each casing, has shortened body length, has improved mechanical applicability, rigidity and reliability; With the used integrated fuel tank that shifts out of various valves, auxiliary pump of oil pump in the hydraulic drive case and hydraulic haulage system, place hydraulic drive case outside, be easy to install and maintain, fuel tank do not tear open cover oil can be not contaminated, further improved system reliability; The rocking arm cylinder adopts two-stage straight-tooth one-level planetary reduction gear structure, and secondary straight-tooth transmission speed reducing ratio is big, and transfer torque is little, the modulus of gear is selected relatively little, and the rocking arm profile is also just little, and coal-winning machine compliance is good, Gear Planet Transmission can guarantee enough transfer strengths, and the compact conformation size is little, supporting capacity is high; Adopt double helix lift angle cylinder, because the incision lift angle is less during coal cutting, it is also little to produce cutting resistance, and promptly cylinder is easily cut rib during cut, and the cutting motor consumed power is less, it is lower to produce heat, can prolong cutting motor application life, when coalingging, coal enters when coalingging lift angle more greatly from less incision lift angle, coal is subjected to one and deepens thrust, and effect of loading coal can be better.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is the utility model overall structure figure

Fig. 2 is the vertical view of the utility model overall structure figure

Among the figure: 1. the left lateral travelling wheel, 2. the right lateral travelling wheel, 3. left tractive unit, 4. right tractive unit, 5. Hydraulic Power Transmission System, 6. electrical control system, 7. left rocking arm, 8. right rocking arm, 9. roll left tube, 10. right cylinder, 11. fuselages, 12. oil pumps are integrated

The specific embodiment

With reference to accompanying drawing 1,2, it is by left and right sides road wheel [1] [2], left and right sides tractive unit [3] [4], Hydraulic Power Transmission System [5], electrical control system [6] and two ends, left and right sides rocking arms [7] [8] constitute, it is characterized by: body partly adopts integral body [11], be separated into left and right sides pull chamber in the fuselage, the hydraulic drive chamber, automatically controlled chamber, component in each case are all packed in each cavity, in addition with the used various valves of oil pump in the hydraulic drive case and hydraulic haulage system, auxiliary pump is integrated, have the gear pump of a hydraulic pressure height-adjusting system of oil pump back serial connection of closure casing structure in this, above-mentioned oil pump integrated [12] is placed hydraulic drive case outside, be separated with fuel tank, and being installed in hydraulic drive case front from the fuselage side, the left and right sides, body two ends rocking arm [7] [8] is hinged on the body by bearing pin; Described left and right sides rocking arm [7] [8], the drive motors reducing gear of its cylinder [9] [10] adopt two-stage straight-tooth, one-level planetary reduction gear to constitute; Described cylinder [9] [10] adopts the double helix lift angle, and it is the lift angle of coalingging than great-lift angle, and less lift angle is the entrance angle when coalingging.

Claims (3)

1. girdle hydraulic haulage shearer, it is by left lateral travelling wheel [1], right lateral travelling wheel [2], left side tractive unit [3], right tractive unit [4], Hydraulic Power Transmission System [5], electrical control system [6], left side rocking arm [7], right rocking arm [8] constitutes, it is characterized in that: body partly adopts integral body [11], be separated into left and right sides pull chamber in the fuselage, the hydraulic drive chamber, automatically controlled chamber, component in each case are all packed in each cavity, in addition with the used various valves of oil pump in the hydraulic drive case and hydraulic haulage system, auxiliary pump is integrated, have the gear pump of a hydraulic pressure height-adjusting system of oil pump back serial connection of closure casing structure in this, above-mentioned oil pump integrated [12] is placed hydraulic drive case outside, be separated with fuel tank, and being installed in hydraulic drive case front from the fuselage side, the left and right sides, body two ends rocking arm [7] [8] is hinged on the body by bearing pin.

2. a kind of girdle hydraulic haulage shearer as claimed in claim 1 is characterized in that: described left and right sides rocking arm [7] [8], the drive motors reducing gear of its left and right sides cylinder [9] [10] adopt two-stage straight-tooth, one-level planetary reduction gear to constitute.

3. a kind of girdle hydraulic haulage shearer as claimed in claim 1 is characterized in that: described left and right sides cylinder [9] [10] adopts the double helix lift angle, and it is the lift angle of coalingging than great-lift angle, and less lift angle is the entrance angle when coalingging.

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