CN201262040Y

CN201262040Y - Split type speed-changing rock drill

Info

Publication number: CN201262040Y
Application number: CNU2008201494278U
Authority: CN
Inventors: 闫龙翔; 邵学侠; 张为民; 苏杰; 张俊峰; 赵俊民
Original assignee: LUOYANG PNEUMATIC TOOL CO Ltd
Current assignee: LUOYANG PNEUMATIC TOOL CO Ltd
Priority date: 2008-09-25
Filing date: 2008-09-25
Publication date: 2009-06-24
Anticipated expiration: 2018-09-25

Abstract

The utility model discloses a split type variable-speed electric rock drill, which comprises a gear shaft, a single-threaded worm, a jaw clutch and a fixed chain pulley, and is characterized in that a reduction box of an electric drill is divided into two parts that are a shell body 1 and a shell body 2; the shell body 1 and the shell body 2 are tensed to form an integrity; a motor output shaft, a motor gear, a speed transforming gear, a stub axle and a support sleeve are arranged inside the shell body 2; the right end of the single-threaded worm is put in the support sleeve through a bearing; the left end of the stub axle is put in a right-half part of the jaw clutch; the right end of the gear shaft is arranged in a centre bore in the shell body 2 through the bearing; and double rows of bush roller chains are sleeved on the fixed chain pulley. By adopting the split type reduction box structure and the technical scheme of transmitting movement through double rows of bush roller chains, the split type variable-speed electric rock drill solves the limits that the machining and the maintenance of a high-power drilling rig shell body have great difficulty and space for movement transmission is not enough.

Description

Split type speed change electric rock drill

Technical field

The utility model relates to mining rock drilling shot hole instrument, especially a kind of split type speed change electric rock drill.

Background technology

The monolithic reduction box that present speed change series electric rock drill adopts, because power transmission shaft is longer, poor rigidity, so need make intermediate support in the body that encrusts, the increase of this part has strengthened the maintenance difficulty of the difficulty of processing and the complete machine of housing.In addition, what at present should the series rock drill all adopt is single sleeve-barrel roollr chain, and less this structure of rig of propulsive force still can.For the bigger high-power rig of propulsive force, this structure take up space is just excessive, and structure is not compact.

The utility model content

The purpose of this utility model provides a kind of split type speed change electric rock drill, can solve the restriction that the processing maintenance difficulty is big and insufficient space is transmitted in motion of high-power rig housing.

The technical solution of the utility model is: described a kind of split type speed change electric rock drill, comprise gear shaft, single start worm, jaw clutch, fixed chain wheels, the reduction box of this electric drill is two bodies, is respectively housing I, housing II, and housing I and housing II are strained to one by bolt; Motor output shaft, motor gear, change-speed gearing, minor axis, support set are housed in housing II; The right-hand member of described single start worm is packed into by bearing in the support set, and pack into the right-hand part of described jaw clutch of the left end of minor axis, the right-hand member of described gear shaft are packed into by bearing in the centre bore in the housing II; Be set with double bushroller chain on the described fixed chain wheels.

Described motor gear is fastened on the motor output shaft termination by holding screw, motor gear is meshed with change-speed gearing, change-speed gearing is contained on the minor axis, minor axis is contained in left side, the following position boss hole in the housing II by bearing, and support set is contained in by screw in the upper part left hole of housing II and forms boss.

Described housing I and housing II cooperate by the boss seam, are tightened by 6 bolts to be one.

The utility model adopts the technical scheme of split reduction box structure and double sleeve-barrel roollr chain transmission campaign, has solved the restriction that the processing maintenance difficulty is big and insufficient space is transmitted in motion of high-power rig housing.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is that the A of Fig. 1 is to view.

The specific embodiment

As shown in fig. 1, reduction box of the present utility model is two bodies, is respectively housing I13, housing II4, and housing I13 and housing II4 cooperate by the boss seam, is tightened by 6 bolts to be one, like this processed workpiece good manufacturability, concentricity height.Motor output shaft 1, motor gear 3, change-speed gearing 19, minor axis 18, support set 5 are housed in the housing II4; Motor output shaft 1 is equipped with in middle part in the housing II4, motor gear 3 is fastened on motor output shaft 1 termination by holding screw 2, motor gear 3 is meshed with change-speed gearing 19, change-speed gearing 19 is contained on the minor axis 18, minor axis 18 is contained in left side, the following position boss hole in the housing II4 by bearing, and support set 5 is contained in by screw 6 in the upper part left hole of housing II4 and forms boss.Single start worm 10 is equipped with by bearing in upper part in the housing I13, is set with duplicate gear 8 on the single start worm 10, and duplicate gear 8 can be by the spline move left and right on the single start worm 10, and the right-hand member of single start worm 10 is packed into by bearing in the support set 5; Double-thread worm 15 is equipped with by bearing in following position in the housing I13, pack into the left side of jaw clutch 17 of the right-hand member of double-thread worm 15, pack into the right-hand part of jaw clutch 17 of the left end of minor axis 18, the gear wheel 9 of dress is meshed on fixed gear 16 in the double-thread worm 15 on the position and the rig main shaft 11, rig main shaft 11 is contained in middle position in the housing I13 by bearing, rig main shaft 11 links to each other with gear shaft 7, two pinions that gear shaft 7 is provided with can be respectively with duplicate gear 8 engagements after carry out speed change, the right-hand member of gear shaft 7 is packed into by bearing in the centre bore in the housing II4.

As shown in Figure 2, single start worm of adorning in housing I13 10 and double-thread worm 15 mesh with worm gear 20, worm gear 25 respectively, worm gear 20, worm gear 25 are set in the both sides of axle sleeve 22, worm gear 20, worm gear 25 link to each other with the outer plate of multi-plate friction clutch 12, multi-plate friction clutch 21 respectively, the interior sheet of multi-plate friction clutch 12, multi-plate friction clutch 21 links to each other with axle sleeve 22 respectively, fixed chain wheels 23 is equipped with at middle position at axle sleeve 22, is set with double bushroller chain 24 on the fixed chain wheels 23.Wheel shaft 26 is housed in axle sleeve 22, and wheel shaft 26 is supported in by both sides guard shield 27 in the installing hole of housing I13, and a side of wheel shaft 26 is equipped with handwheel 14.

This type speed change rig fltting speed divides two grades, and condition condition in base area can be selected the cutter speed of needs during use.Motor output shaft 1 in the housing II4 drives motor gear 3, passes motion to change-speed gearing 19 on the minor axis 18 by engagement, constitutes the first order and slows down; Minor axis 18 passes to double-thread worm 15 to power and motion by jaw clutch 17.Fixed gear 16 in the housing I13 on the double-thread worm passes motion to the gear wheel 9 on the rig main shaft 11, constitutes rotatablely moving of rig main shaft 11.In addition, pass motion to duplicate gear 8 on the single start worm 10, make single start worm 10 obtain two kinds of rotating speeds with pinion on the gear shaft 7 that rig main shaft 11 is connected.

Another characteristics that this type speed change rig is different from former serial rock drill are under the prerequisite of compact conformation, adopt double bushroller chain 24 to be used to bear bigger propulsive force.When handwheel 14 placed neutral, worm gear 20 skies were enclosed within on the axle sleeve 22, and machine does not produce propulsive force.When handwheel 14 counter clockwise direction rotations place progressive position gradually, the motion that single start worm 10 will obtain passes to worm gear 20, the compacted back of multi-plate friction clutch 21 passes motion to fixed chain wheels 23 on the axle sleeve 22 by spline, and fixed chain wheels 23 is rotated propulsive force is applied to work plane by double bushroller chain 24.When the rotation of handwheel 14 clockwise directions retreats, the motion that double-thread worm 15 will obtain passes to worm gear 25, the compacted back of multi-plate friction clutch 12 passes motion to fixed chain wheels 23 on the axle sleeve 22 by spline, and fixed chain wheels 23 is rotated and retreated by double bushroller chain 24.

Claims

1, a kind of split type speed change electric rock drill, comprise gear shaft (7), single start worm (10), jaw clutch (17), fixed chain wheels (23), it is characterized in that: the reduction box of this electric drill is two bodies, be respectively housing I (13), housing II (4), housing I (13) and housing II (4) are strained to one by bolt; Motor output shaft (1), motor gear (3), change-speed gearing (19), minor axis (18), support set (5) are housed in housing II (4); The right-hand member of described single start worm (10) is packed into by bearing in the support set (5), and pack into the right-hand part of described jaw clutch (17) of the left end of minor axis (18), the right-hand member of described gear shaft (7) are packed into by bearing in the centre bore in the housing II (4); Be set with double bushroller chain (24) on the described fixed chain wheels (23).

2, split type speed change electric rock drill according to claim 1, it is characterized in that: described motor gear (3) is fastened on motor output shaft (1) termination by holding screw (2), motor gear (3) is meshed with change-speed gearing (19), change-speed gearing (19) is contained on the minor axis (18), minor axis (18) is contained in interior left side, the following position boss hole of housing II (4) by bearing, and support set (5) is contained in the interior boss that forms of upper part left hole of housing II (4) by screw (6).

3, split type speed change electric rock drill according to claim 1 is characterized in that: described housing I (13) and housing II (4) cooperate by the boss seam, are tightened by 6 bolts to be one.