CN105817703A - Belt saw - Google Patents

Abstract

The invention aims at providing a belt saw which is used for doing sawing work on materials in a mine especially a coal mine. The belt saw comprises a saw frame body. Belt wheels are rotationally arranged on the saw frame body. A belt-shaped saw blade is annularly wound around the two belt wheels which are arranged in a spaced manner. The belt saw is characterized in that one of the belt wheels is connected with a rotating shaft of a hydraulic motor; the hydraulic motor is driven by emulsion; the saw frame body is a flat box shell; a notch part is arranged in the middle portion of one side of the saw frame body; a local belt section of the belt-shaped saw blade is exposed out of an opening portion of the notch part to form a sawing work section; and a cooling arc extinction emulsion spraying head is arranged close to the sawing work section of the belt-shaped saw blade. Safety of a pressure source is ensured, cooling is ensured, extinction of spark arc light can also be ensured, potential safety accident hazards are effectively eliminated, and the work safety of underground roadways of mines is ensured.

Description

Band saw

Technical field

The present invention relates to cutting tool, be especially a kind of instrument that material is implemented sawing.

Background technology

Mine especially coal mine down-hole tunnel needs due to supporting etc., usually arranges just like bar, tubulose or plate-like object, when its damage or tunnel go along with sb. to guard him etc. reason need to remove it, split time, need to be broken down into short and small state, in order to carrying.In the special environment of its tangible coal mine, how long part truncate, bulk are divided into the operation not a duck soups such as fritter, because need any type of naked light of avoiding exactly of special concern to produce in down-hole.Owing to coal mine having the inflammable gases such as gas, even the appearance running into a little spark of naked light is likely to lead to accident of mine disaster.

Summary of the invention

It is an object of the invention to provide a kind of band saw being suitable to implement material is carried out sawing operation in mine especially coal mine.

For achieving the above object, present invention employs techniques below scheme: a kind of band saw, including saw frame body, rotate on saw frame body and be provided with belt wheel, on two spaced apart belt wheels, annular is arranged with band saw blades, it is characterized in that: two belt wheels one of them be connected with the rotating shaft of hydraulic motor, hydraulic motor is by emulsion driving, saw frame body is flat box shaped shell, the one jagged portion of middle side part of saw frame body, the local band section of band saw blades appears composition sawing active section in the oral area of notch part, and the sawing active section of band saw blades closes on and arranges cooling extinguishing arc emulsion shower nozzle.

In such scheme, the power driving band saw blades to implement sawing motion is emulsion rather than general hydraulic oil, ensure that the safety of pressure source, the sawing section of band saw blades is implemented spray by the backflow by means of emulsion simultaneously, not only having ensure that cooling but also having can ensure that goes out except spark arc light, the safety hazards effectively eliminated, it is ensured that the job safety of coal mine down-hole tunnel.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present invention；

Fig. 2 is the top view of Fig. 1；

Fig. 3 is the A A sectional view in Fig. 2；

Fig. 4 is hydraulic principle figure；

Fig. 5 is the enlarged diagram that belt wheel coordinates with band saw blades.

Detailed description of the invention

In conjunction with Fig. 1,2, band saw includes saw frame body 10, rotate on saw frame body 10 and be provided with belt wheel 20, on two spaced apart belt wheels 20, annular is arranged with band saw blades 30, two belt wheels 20 one of them be connected with the rotating shaft of hydraulic motor 40, hydraulic motor 40 is by emulsion driving, saw frame body 10 is flat box shaped shell, the one jagged portion of middle side part 11 of saw frame body 10, the local band section of band saw blades 30 appears composition sawing active section 31 in the oral area of notch part 11, and the sawing active section 31 of band saw blades 30 closes on and arranges cooling extinguishing arc emulsion shower nozzle.

Such scheme drives the working media of hydraulic motor 40 and is emulsion for cooling down, eliminate the medium of arc light spark, all no-sparks in the use of combustible medium and sawing process so just can be avoided in underworkings environment to produce, it is ensured that the safety of coal mine operation.

In conjunction with Fig. 2, shown in 3, the both sides of described notch part 11 arrange first and second guide wheel group 51,52, the guide wheel one, 2 511,521 that first and second guide wheel group 51 is arranged in parallel by core wheel is constituted, the zone face of band saw blades 30 rolls with the wheel rim side face of guide wheel one, 2 511,521 and coordinates, and the core wheel of guide wheel one, 2 511,521 and the core wheel of belt wheel 20 acutangulate angle shape and arrange.nullIt is exactly specifically，First guide wheel group 51 is made up of two guide wheels 1 and the second guide wheel group 52 is made up of two guide wheels 2 521，One 511 pairs of band saw blades 30 of two guide wheels are implemented to roll formula constraint，2 521 pairs of band saw blades 30 of two guide wheels are also implemented to roll formula constraint，First、Two guide wheel group 51、Band saw blades 30 between 52 keeps it to cut saw attitude，As preferred scheme，Guide wheel one、2 511、The core wheel of the core wheel of 521 and belt wheel 20 acutangulates angle shape layout and seeks to keep first、Two guide wheel group 51、The zone face of the band saw blades 30 between 52 and band deflecting facet one acute angle on belt wheel 20，Such as the angle β in Fig. 3，Select this angle band saw blades 30 can be in suitable operating position and attitude when holding band saw，Staff holds conveniently、Laborsaving.

In conjunction with Fig. 3, the sawtooth phase dorsal part being positioned at band saw blades 30 on saw frame body 10 arranges the handle 60 being easy to hand-held assurance, closing on side, finger place on handle 60 and arrange control handle 441, control handle 441 is the lever of the switch valve 44 being arranged in the water influent pipeline 41 of hydraulic motor 40.

The length direction of handle 60 for upwardly extending layout from hydraulic motor 40 position, in figure 3, band saw blades 30 is positioned at the lower left position of handle 60, the weight being arranged so as to utilize band saw implements sawing, is equivalent to that band saw blades 30 is directly close to band cutting material and can be easily accomplished sawing operation.Close on side, finger place on handle 60 and arrange that control handle 441 is contemplated to conveniently operate, control, i.e. palm is fitted with handle 60, and finger can stir control handle 441, and operating position is convenient, in time.

The belt wheel 20 that rotating shaft with hydraulic motor 40 is connected is drivewheel, and another belt wheel 20 is driven pulley, and the support shaft of this driven pulley 20 is connected with slide block 70, and slide block 70 is connected with governor motion, and governor motion regulates the wheelspan between two belt wheels 20.Described governor motion can be a screw rod 71 rotated, there is the nut coordinated with screw rod 71 on slide block 70 and constitute screw-nut body, slide block 70 is connected with the support shaft support plate of driven pulley 20, regulates the spacing between driven pulley 20 and drivewheel and implement the tensioner degree regulation of band saw blades 30 when screw rod 71 rotates.

Band saw blades 30 upstream end of guide wheel 1 or guide wheel 2 521 arranges baffle plate 53, and the plate face of baffle plate 53 arranges the bar hole or narrow slit passed through for band saw blades 30.Bar hole or narrow slit on baffle plate 53 both can guarantee that the accessible of band saw blades 30 passed through, and can stop again and enter between guide wheel 2 521 according to bits and cooling extinguishing arc liquid, in order to avoid damage band saw blades 30 and miscellaneous part.

In conjunction with Fig. 4, the liquid back pipe road 42 of hydraulic motor 40 is connected with one end of cooling extinguishing arc pipeline 43, and the other end of cooling extinguishing arc pipeline 43 constitutes cooling extinguishing arc emulsion shower nozzle 431.Directly utilize the backflow in the liquid back pipe road 42 of hydraulic motor 40 to cool down, eliminate arc light or spark, not only can facilitate parts layout but also relevant power source can be reduced.

In conjunction with Fig. 1, in order to ensure band saw blades 30 stable motion, the side face of described belt wheel 20 be disposed axially to little, in, major diameter step-like, the serrated edge of band saw blades 30 is vacant at reduced diameter section, the another side away from serrated edge in band saw blades 30 abuts at the step of major diameter, the middle part side face laminating of the middle part belt body of band saw blades 30 and belt wheel 20.During sawing work, the serrated edge of band saw blades 30 is vacant at small-diameter step 21, and the another side of band saw blades 30 is resisted against at major diameter step 22, it is to avoid during stress, the zone face of band saw blades 30 slides axially displacement on belt wheel 20.

Claims (7)

1. a band saw, including saw frame body (10), the upper rotation of saw frame body (10) is provided with belt wheel (20), the upper annular of two spaced apart belt wheels (20) is arranged with band saw blades (30), it is characterized in that: two belt wheels (20) one of them be connected with the rotating shaft of hydraulic motor (40), hydraulic motor (40) is by emulsion driving, saw frame body (10) is flat box shaped shell, the one jagged portion of middle side part (11) of saw frame body (10), the local band section of band saw blades (30) appears composition sawing active section (31) in the oral area of notch part (11), the sawing active section (31) of band saw blades (30) closes on and arranges cooling extinguishing arc emulsion shower nozzle (431).

Band saw the most according to claim 1, it is characterized in that: the both sides of described notch part (11) arrange first and second guide wheel group (51,52), the guide wheel one, two (511,521) that first and second guide wheel group (51) is arranged in parallel by core wheel is constituted, the zone face of band saw blades (30) rolls with the wheel rim side face of guide wheel one, two (511,521) and coordinates, and the core wheel of guide wheel one, two (511,521) and the core wheel of belt wheel (20) acutangulate angle shape and arrange.

Band saw the most according to claim 1, it is characterized in that: the sawtooth phase dorsal part being positioned at band saw blades (30) on saw frame body (10) arranges the handle (60) being easy to hand-held assurance, closing on side, finger place on handle (60) and arrange control handle (441), control handle (441) is the lever of the switch valve (44) being arranged in the water influent pipeline (41) of hydraulic motor (40).

Band saw the most according to claim 1, it is characterized in that: the belt wheel (20) that the rotating shaft with hydraulic motor (40) is connected is drivewheel, another belt wheel (20) is driven pulley, the support shaft of this driven pulley (20) is connected with slide block (70), slide block (70) is connected with governor motion, and governor motion regulates the wheelspan between two belt wheels (20).

Band saw the most according to claim 2, it is characterized in that: band saw blades (30) upstream end of guide wheel one (511) or guide wheel two (521) arranges baffle plate (53), the plate face of baffle plate (53) arranges the bar hole or narrow slit passed through for band saw blades (30).

Band saw the most according to claim 3, it is characterized in that: the liquid back pipe road (42) of hydraulic motor (40) is connected with one end of cooling extinguishing arc pipeline (43), the other end of cooling extinguishing arc pipeline (43) constitutes cooling extinguishing arc emulsion shower nozzle (431).

Band saw the most according to claim 4, it is characterized in that: described belt wheel (20) side face be disposed axially to little, in, major diameter step-like, the serrated edge of band saw blades (30) is vacant at reduced diameter section, the another side away from serrated edge in band saw blades (30) abuts at the step of major diameter, the middle part side face laminating of the middle part belt body of band saw blades (30) and belt wheel (20).