CN104439558B - Thread cover plate for cleaner multi-station tapper - Google Patents

Abstract

The invention provides a kind of thread cover plate for cleaner multi-station tapper, main motor is fixed on the top board of casing, there is the power transmission shaft coordinated with it main motor downside, power transmission shaft is stretched into gear-box, gear train is set in gear-box, the lower end of power transmission shaft connects with gear train top, and screw tap corresponds to coaxially connect with the end of gear train respectively；Screw tap downside is provided with loading cylinder, has some location-plates on loading cylinder；There is horizontal connecting plate in casing, servomotor is fixed on connecting plate, and cooperation is driven and the screw rod of elevating screw between, the nut of elevating screw is fixedly connected on gear-box；First balance cylinder is fixed on casing top board and is fixedly connected with connecting plate, and stroke cylinder is fixed casing top board and is fixedly connected with connecting plate, and the second balance cylinder is fixed on connecting plate and is fixedly connected with gear-box.This tapping machine has：Small volume, lighter in weight, the screw thread process speed of thread cover plate for cleaner are fast, processing efficiency is higher.

Description

Thread cover plate for cleaner multi-station tapper

Technical field

The present invention relates to a kind of thread processing equipment, more particularly to a kind of thread cover plate for cleaner multi-station tapper.

Background technology

At present, the screw thread of thread cover plate for cleaner is processed, general to use chain-type tapping machine, its structure is：Trapezoidal screw Feeding；Chain transmission mode so that ten pieces of location-plates on loading cylinder are slided on three guide pass；Each gear in gear-box Along gear-box length direction rods arranged in horizontal line and engage successively, the spacing between the axis of two neighboring gear is smaller, each tooth The modulus of wheel is smaller, the number of teeth is less.

The tapping machine is rational in infrastructure to have following defect：

1st, the screw thread process speed of thread cover plate for cleaner is slow, processing efficiency is relatively low；

2nd, gear-box does not have counterweight, screw pair quick abrasion；

3rd, lost labor, in-convenience in use, the labour intensity of operative employee is larger；

4th, the moment of torsion that each gear in gear-box is transmitted is smaller, and the tooth stress of each gear is big, easy to wear, filter spiral The accuracy of screw machining of line cover plate is difficult to ensure that；

5th, thread plate is fallen down forward from location-plate, and cutting fluid is also splashed forward therewith, and inconvenient collection is processed Thread plate.

The content of the invention

The technical problems to be solved by the invention are to provide a kind of thread cover plate for cleaner multi-station tapper, using originally attacking Silk machine, the screw thread process speed of thread cover plate for cleaner is fast, processing efficiency is higher.

In order to solve the above technical problems, the invention provides a kind of thread cover plate for cleaner multi-station tapper, including machine Shell, main motor, gear-box, several screw taps, loading cylinder, elevating screw and servomotor, gear-box, several screw taps, loading Cylinder and elevating screw are arranged in casing；

Main motor is fixed on the top board of casing, and the output shaft of main motor is stretched into casing, the output shaft downside of main motor There is the power transmission shaft with its spline fitted, power transmission shaft is stretched into gear-box, gear train, the lower end of power transmission shaft and tooth are set in gear-box The top of train coaxially connects, and the end of gear train is quantitatively identical with screw tap, and screw tap corresponds to the end with gear train respectively Coaxially connect；

Screw tap downside is provided with loading cylinder, have on loading cylinder for install on thread plate and position with each screw tap point Not corresponding one by one some location-plates；

Horizontal connecting plate is provided between the top board and gear-box of casing, servomotor is fixed on connecting plate, servo It is driven between the output shaft of motor and the screw rod of elevating screw and is coordinated, the nut of elevating screw is fixedly connected on gear-box；

Some first balance cylinders and some stroke cylinders, first balance cylinder are respectively fixed with the top board of casing Piston-rod lower end through casing top board and being fixedly connected with connecting plate, the piston-rod lower end of the stroke cylinder runs through casing top Plate is simultaneously fixedly connected with connecting plate, and some second balance cylinders, the piston rod of second balance cylinder are fixed with connecting plate Lower end is fixedly connected through connecting plate and with gear-box.

For the sake of for energy concise description problem, below to thread cover plate for cleaner multi-station tapper of the present invention referred to as For this tapping machine.

After using the technical scheme of the above, because the piston rod of each the first balance cylinder connects through top board with connecting plate, Connecting plate is connected by the second balance cylinder with gear-box, and the output shaft of main motor drives power transmission shaft rotation after top board, passes Moving axis drives in gear-box and is rotated with the top of gear train, and screw tap coaxially connects with the end of gear train one by one respectively, if After dry stroke cylinder starts, drive lower connecting plate and gear-box following can move in the piston rod of stroke cylinder, and then make screw tap Fast feed recycles servomotor and elevating screw to coordinate near loading cylinder position, drives gear-box and screw tap to moving down It is dynamic, tapping operation finally is carried out to the thread plate to be processed on loading cylinder, after completing tapping operation, main motor and servomotor Invert simultaneously, gear-box and screw tap are moved up, and gradually disengage thread plate, then start stroke cylinder, stroke cylinder band Dynamic connecting plate, gear-box and screw tap are moved up, and return to initial position, so circulation, can be with the multigroup thread plate of Continuous maching；

During this, ensure that gear-box and screw tap are integrally put down in the first balance cylinder, the second balance cylinder and stroke cylinder Quietly to lower feeding and upward return, mitigate the vibrations of this tapping machine and reduce servomotor apolegamy power, mitigate stroke cylinder Back pressure；And gear-box is during down or up, mass is used as by the second balance cylinder, gear-box is carried out Synchronously corresponding counterweight balanced adjustment, makes gear-box consistently achieve poised state.Therefore compared with prior art, this tapping machine has Small volume, lighter in weight, use very light and handy advantage.

Therefore, using this tapping machine, the screw thread process speed of thread cover plate for cleaner is fast, processing efficiency is higher.

The cross sectional shape of the loading cylinder of this tapping machine is regular hexagon, and loading cylinder is connected with casing rotary type, loading cylinder Have per one side stage casing for installing some location-plates corresponding one by one respectively with each screw tap on thread plate and position；

Correspondence loading cylinder is provided with two groups of flattener modules, and each flattener module includes flattening cylinder, two support bars, supports Plate and pressing plate, supporting plate are arranged on casing top board upside, and inverted pressing cylinder fixes the piston for flattening cylinder on the supporting plate Bar is directed vertically to casing top board through supporting plate, and two support bars are fixedly connected on supporting plate downside, described support bar vertically Casing top board, connecting plate, gear-box are sequentially passed through, and the lower end of the support bar is fixedly connected with horizontal pressing plate；Two groups Two pressing plates of flattener module are respectively aligned to the two ends of loading cylinder.

After using said structure, manually, pneumatically or electrically flowing mode, make loading cylinder rotatable around its axis, loading cylinder Any upper side stage casing some thread plates are installed (to form one group of threaded cap of screw thread to be processed by corresponding location-plate Plate), after the screw thread process on thread plate is good, then make loading cylinder rotatable around its axis, first allow the thread plate for processing Separated with loading cylinder, second make the another side of loading cylinder turns into horizontal upper face again, and the upper side stage casing is by corresponding fixed Position plate places some thread plates, and and so on, this tapping machine can continuously process multigroup thread plate, during this without between Every, supplement thread plate to be processed, further increase the efficiency of screw thread process, therefore, this tapping machine have save it is artificial, make With convenient, the less advantage of operative employee's labour intensity.

Before tapping operation, start two pressing cylinders, shrink the piston rod of two pressing cylinders, flattener module is because of gas Cylinder effect move down, two pressing plates of flattener module downwards against loading cylinder horizontal upper face on, and then ensure loading The upper side of cylinder is horizontal and will not rock；After the completion of tapping operation, pressing cylinder can be started, flatten the work of cylinder Stopper rod extends, and is resisted against on casing top board, and then drives supporting plate, support bar and pressing plate integrally to move up, pressing plate away from Loading cylinder, will not hinder loading cylinder to rotate, and the support bar of flattener module may also operate as limitation connecting plate and gear-box is past up and down The effect of multiple motion, it is to avoid position offsets after connecting plate and gear-box are operated for a long time.

The gear train of this tapping machine is including some end gears, some carrier gears, one immediately below power transmission shaft Top gear, end gear and screw tap are quantitatively identical and to set the quantity of end gear be N, and N is the integer not less than 3, The quantity of carrier gear be N -2, some carrier gears, a top gear along gear-box length direction in-line it is equidistant between Every arrangement, end gear is arranged along the length direction in-line equi-spaced apart of gear-box, top gear with position and its is relative Two adjacent end gears answering are engaged, each carrier gear with position and its corresponding remaining each two adjacent end tooth Wheel engagement；

Coaxially connected between power transmission shaft and top gear, screw tap corresponds coaxially connect with end gear lower end respectively.

After using the structure of the above, the spacing between the axis of two neighboring end gear is larger, some carrier gears, beginning Spacing in end tooth wheel between two axis of gear of arbitrary neighborhood is larger, and the modulus of each gear is larger, the number of teeth is more, so, The moment of torsion that each gear in gear-box is transmitted is larger, and the tooth stress of each gear is small, not easy to wear, thread cover plate for cleaner Accuracy of screw machining is easy to ensure.

Lower horizontal in the casing is provided with the conveyer belt below loading cylinder, and the width of conveyer belt is more than loading cylinder Radical length.

So, when loading cylinder is rotated, the thread plate processed on location-plate can fall on the conveyor belt just, it is easy to side Just the thread plate for processing is collected, conveyer belt transfers out outside this tapping machine the thread plate of collection, is easy to collect.

This tapping machine can be additionally used in the screw thread process of other machinery parts (such as：Screw thread for processing nut).

Brief description of the drawings

Fig. 1 is the front view of this tapping machine.

Fig. 2 is the right view of this tapping machine.

Fig. 3 is the A direction views of Fig. 1.

Fig. 4 is the B direction views of Fig. 1.

Fig. 5 is the top view of this tapping machine.

Fig. 6 is B-B echelon sectional views of Fig. 5.

Fig. 7 is the structural representation of the gear-box of this tapping machine.

Specific embodiment

Further illustrate the present invention below in conjunction with the accompanying drawings and by implementation method.

Referring to Fig. 1 to Fig. 5：

It should be strongly noted that the front side of casing 1, rear side, the side plate on right side are eliminated in Fig. 1, before eliminating gear-box 3 The side plate of side；The breadth specification of Fig. 3 has carried out appropriate amplification, and loading cylinder 12 according to rotationally clockwise；Fig. 4 A position for the second balance cylinder 10, servomotor 7, drive gear 7a, driven gear 7b and elevating screw 8 is expressed to close System, eliminates other related parts；Fig. 5 only expresses four the first balance cylinders, 9, two the second balance cylinders 10, two Individual stroke cylinder 11 and two flatten arrangement positions of the cylinder 13a on top board 1a, eliminate main motor 2, servomotor 7 etc. and set It is standby；The first balance cylinder 9, one of stroke cylinder 11, second balance cylinder 10, two is illustrate only in Fig. 6 to flatten Cylinder 13a respectively with the mated condition between top board 1a, connecting plate 6, gear-box 3, be subject to province for other related parts Slightly；The breadth specification of Fig. 7 has carried out appropriate amplification, expresses six end gear 3c and power transmission shaft 4, four in gear-box 3 The arrangement position and engagement situation each other of individual carrier gear 3b, a top gear 3a and the first output shaft, Yi Jisheng The nut 8b positions of screw mandrel 8 drop.

The structure of this tapping machine is：

Casing 1 is square shell structure form, and the horizontal top 1a central areas of casing 1 are provided with inverted main electricity vertically Machine 2, the output shaft of main motor 2 is involute spline set.

Top in casing 1 is sequentially provided with horizontal connecting plate 6, horizontally disposed gear-box 3, six vertically from top to down Screw tap 5, loading cylinder 12, conveyer belt 14, leaves in gap, gear-box 3 between connecting plate 6 and casing 1 and is provided with gear train, gear The end of system is quantitatively identical with screw tap 5.

The output shaft of main motor 2 coordinates after top board 1a and connecting plate 6 with power transmission shaft 4, and power transmission shaft 4 is involute spline Axle, power transmission shaft 4 can be slided up and down in the axis direction of the input shaft of main motor 2, and the stroke being slidably matched is sufficient so that Screw tap 5 completes tapping operation through thread plate.

Gear train in gear-box 3 include six end gear 3c, four carrier gear 3b, one it is defeated in main motor 2 Top gear 3a, four carrier gear 3b, a top gear 3a immediately below shaft along gear-box 3 length direction in-line Equi-spaced apart arrange and the front side in gear-box 3, end gear 3c along gear-box 3 length direction in-line equi-spaced apart Arrangement and the rear side in gear-box 3, top gear 3a are nibbled with position with its two corresponding adjacent end gear 3c Close, each carrier gear 3b is engaged with position with its corresponding remaining each two adjacent end gear 3c, the rear portion of gear-box 3 The vertically-mounted nut 8b for having an elevating screw 8, and gear-box 3 is provided with the through hole of correspondence nut 8b.

The bottom of power transmission shaft 4 is stretched into gear-box 3 and coaxially connected between top gear 3a, screw tap 5 respectively one by one with end End tooth wheel 3c lower ends coaxially connect.

Fixed platform 6a is also equipped with connecting plate 6, inverted servomotor 7 is arranged on the fixed platform 6a of connecting plate 6 On, it is driven by gear transmission structure between servomotor 7 and elevating screw 8 and is coordinated, gear transmission structure is arranged on fixed flat Between platform 6a and connecting plate 6, gear transmission structure includes drive gear 7a and driven gear 7b, and the output shaft of servomotor 7 is passed through Fixed platform 6a is fastened, and the output shaft lower end of servomotor 7 is coaxially fixed with drive gear 7a, the screw rod 8a of elevating screw 8 From lower through connecting plate 6, and it is coaxially fixed with driven gear 7b for upper end, and the screw rod 8a of elevating screw 8 is vertically through connection Plate 6, by bearing fit between screw rod 8a and connecting plate 6, screw rod 8a bottoms coordinate with the nut 8b on gear-box 3.

Four the first balance cylinders of the inversion of square arrangement 9, each angle of top board 1a are provided with the top board 1a of casing 1 vertically On correspond to first balance cylinder 9, the piston rod of each the first balance cylinder 9 connects through top board 1a with connecting plate 6.

The inversion stroke cylinder 11 of two is provided with the top board 1a of casing 1 vertically, two stroke cylinders 11 are located at machine respectively The length direction both sides of the top board 1a of shell 1 and close main motor 2, the piston rod of each stroke cylinder 11 run through top board 1a and connecting plate 6 connect.

Symmetrical two inverted second balance cylinders 10 in main motor 2 respectively, two are provided with connecting plate 6 vertically Respectively positioned at the length direction both sides of connecting plate 6, (height of the second balance cylinder 10 is more than connecting plate 6 to second balance cylinder 10 The height in gap between the top board 1a of casing 1, so wearing top board 1a on the cylinder body of the second balance cylinder 10), the second balance cylinder Connect with gear-box 3 after connecting plate 6 is worn under 10 piston rod.

First balance cylinder 9 and the second balance cylinder 10 are all single-acting cylinder, and the first balance cylinder 9 acts on connecting plate On 6, connecting plate 6 is subject to the lasting castering action power of the first balance cylinder 9, connecting plate 6 is kept balance, the second Balance Air Cylinder 10 is acted on gear-box 3, gear-box 3 is subject to the lasting castering action power of the second balance cylinder 10, i.e. the second Balance Air The effect of cylinder 10 replaces the ballast box of original gear-box 3.

Middle part level in casing 1 is provided with loading cylinder 12, and loading 12 length of cylinder is walking upward phase with the length of top board 1a Unanimously, the cross sectional shape of loading cylinder 12 is regular hexagon, and the axial two ends of loading cylinder 12 are connected (attached by bearing with casing 1 Described bearing not shown in figure) so that loading cylinder 12 is connected with the rotary type of casing 1, and every one side stage casing of loading cylinder 12 is equal Have for installing six location-plate 12a corresponding one by one respectively with each screw tap 5 on thread plate and position, in processing, carry Thing cylinder 12 is scope of operation 12b in horizontal upper side, and loading cylinder 12 is along the side that its direction of rotation will be in horizontal plane Blowing face 12c.

Correspondence loading cylinder 12 is provided with two groups of flattener modules, and each flattener module includes flattening cylinder 13a, two support bars 13b, supporting plate 13c and pressing plate 13d, supporting plate 13c are in the top board 1a of casing 1 tops, and inverted pressing cylinder 13a is fixed on branch On fagging 13c, the piston rod for flattening cylinder 13a runs through supporting plate 13c, and flattens the piston rod of cylinder 13a and be resisted against casing 1 Top board 1a surfaces, two groups the two of flattener module flatten cylinder 13a respectively positioned at the length direction both sides of top board 1a and away from master Motor 2, in other words, two flatten cylinder 13a and are located at two outsides of the second balance cylinder 10 respectively, and two support bar 13b are erected Straight to be welded on supporting plate 13c downsides, two support bar 13b sequentially pass through the top board 1a of casing 1, connecting plate 6, gear-box 3, until leaning on Nearly loading cylinder position, the lower end of two support bar 13b is fixedly connected with horizontal pressing plate 13d, two groups of the two of flattener module pressures Plate 13d is respectively aligned to the two ends of loading cylinder 12.

When two two piston rods for flattening cylinder 13a shrink range displacement, two pressing plate 13d respectively with loading The contact in the horizontal upper face of cylinder 12, it is ensured that the upper side of loading cylinder 12 keeps the job position of level in process.

Two pressing cylinder 13a, two the second balance cylinders, 10, two stroke cylinders 11 are in top board 1a widths Heart district domain, the axis of six cylinders is in same vertical plane.

Lower horizontal in casing 1 is provided with the oval shape in the lower section of loading cylinder 12 around conveyer belt 14, conveyer belt 14 Width is more than the radical length of loading cylinder 12, and conveyer belt 14 uses steel wire net-belt.

It is additionally provided with the lower section of conveyer belt 14 in casing 1 (described not shown in accompanying drawing for containing the container of cutting fluid Container).

When using, start four the first balance cylinders 9 and two the second balance cylinders 10 so that connecting plate 6, gear-box 3, Screw tap 5 is lifted up, relative between the output shaft of main motor 2 and power transmission shaft 4 to slide during this away from loading cylinder 12, but ensures The output shaft of main motor 2 and the spline fitted of power transmission shaft 4；

Thread plate to be processed is placed on the scope of operation 12b and blowing face 12c of loading cylinder 12, starts two pressing gas Cylinder 13a, shrinks two piston rods for flattening cylinder 13a, and flattener module is moved down because of cylinder action, two flattener modules Pressing plate 13d be resisted against loading cylinder 12 scope of operation 12b on, and then ensure loading cylinder 12 scope of operation 12b be horizontal and Will not rock；

Start main motor 2, the output shaft of main motor 2 drives power transmission shaft 4 to rotate, power transmission shaft 4 drives top gear 3a, passes a bridge Gear 3b and end gear 3c rotations, and then drive screw tap 5 to rotate；

Start two stroke cylinders 11, two stroke cylinders 11 drive connecting plate 6, gear-box 3 and six screw taps 5 to moving down Dynamic, until two stroke cylinders 11 are moved at maximum displacement, now screw tap 5 is restarted and is watched near thread plate to be processed Motor 7 is taken, servomotor 7 is rotated, drive gear 7a and driven gear 7b coordinates rotation, driven gear 7b then drives elevating screw 8 screw rod 8a is rotated, and screw rod 8a coordinates with the nut 8b being located on gear-box 3, and gear-box 3 will not rotate, final band moving gear Case 3 and six screw taps 5 are moved down, and tapping operation is carried out to thread plate to be processed；

After the completion of tapping operation, main motor 2 is inverted, and simultaneously invert servomotor 7, screw tap 5 is in servomotor 7 Effect departs from the thread plate for machining down, is again started up stroke cylinder 11, and the piston rod of stroke cylinder 11 shrinks, stroke gas Cylinder 11 drives connecting plate 6, gear-box 3 and screw tap 5 upwards, and to initial position, main motor 2 is out of service, in whole process, first Balance cylinder 9 is acted on connecting plate 6, and the second balance cylinder 10 is acted on gear-box 3, and connecting plate 6, gear-box 3 are made jointly Keep balancing with screw tap 5；

Start and flatten cylinder 13a, flatten the piston rod elongation of cylinder 13a, and be resisted against on the top board 1a of casing 1, and then band Dynamic supporting plate 13c, support bar 13b and pressing plate 13d are integrally moved up, and pressing plate 13d is away from loading cylinder 12；Loading cylinder 12 is rotated, The blowing face 12c for being placed with thread plate to be processed is transformed into new scope of operation 12b, and produces new blowing face 12c, Thread plate to be processed is placed with new blowing face 12c, so circulation, the continuous tapping of multigroup thread plate can be completed and made Industry.

The conveyer belt that the thread plate of the tapping end of job drops thereunder by the rotation of loading cylinder 12, conveyer belt will Thread plate is transported outside this tapping machine.

Complete aforesaid operations can also using peripheral hardware PLC control circuit complete, and during according to tapping gear-box 3 position Put, the stroke sensor of monitoring gear-box 3 position is provided with casing 1 so that above-mentioned tapping Job Operations are more convenient, effect Rate is also greatly improved.

Above-described is only one embodiment of the present invention, it is noted that for one of ordinary skill in the art For, under the premise without departing from the principles of the invention, obvious some conversion can also be made or substituted and retrofited, this Also should be regarded as belonging to protection scope of the present invention a bit.

Claims (4)

1. thread cover plate for cleaner multi-station tapper, including casing, main motor, gear-box, several screw taps, loading cylinder, liter Drop screw mandrel and servomotor, gear-box, several screw taps, loading cylinder and elevating screw are arranged in casing；

Main motor is fixed on the top board of casing, and the output shaft of main motor is stretched into casing, the output shaft of main motor downside have with The power transmission shaft of its spline fitted, power transmission shaft is stretched into gear-box, and gear train, the lower end of power transmission shaft and gear train are set in gear-box Top coaxially connect, the end of gear train is quantitatively identical with screw tap, screw tap respectively correspond to it is coaxial with the end of gear train Connect；

Screw tap downside is provided with loading cylinder, have on loading cylinder for install on thread plate and position with each screw tap difference one One corresponding some location-plates, it is characterised in that：

Horizontal connecting plate is provided between the top board and gear-box of casing, servomotor is fixed on connecting plate, servomotor Output shaft and the screw rod of elevating screw between be driven and coordinate, the nut of elevating screw is fixedly connected on gear-box；

Some first balance cylinders and some stroke cylinders, the work of first balance cylinder are respectively fixed with the top board of casing Stopper rod lower end is fixedly connected through casing top board and with connecting plate, and the piston-rod lower end of the stroke cylinder runs through casing top board simultaneously It is fixedly connected with connecting plate, some second balance cylinders, the piston-rod lower end of second balance cylinder is fixed with connecting plate It is fixedly connected through connecting plate and with gear-box.

2. thread cover plate for cleaner multi-station tapper according to claim 1, it is characterised in that：

The cross sectional shape of the loading cylinder is regular hexagon, and loading cylinder is connected with casing rotary type, in every one side of loading cylinder Duan Jun has for installing some location-plates corresponding one by one respectively with each screw tap on thread plate and position；

Correspondence loading cylinder is provided with two groups of flattener modules, each flattener module include flattening cylinder, two support bars, supporting plate and Pressing plate, supporting plate is arranged on casing top board upside, and inverted pressing cylinder is fixed on the supporting plate, and the piston rod for flattening cylinder is passed through Perforating branches fagging is directed vertically to casing top board, and two support bars are fixedly connected on supporting plate downside vertically, and described support bar is successively Horizontal pressing plate is fixedly connected with through the lower end of casing top board, connecting plate, gear-box, and the support bar；Two groups of pressings Two pressing plates of component are respectively aligned to the two ends of loading cylinder.

3. thread cover plate for cleaner multi-station tapper according to claim 1, it is characterised in that：

The gear train includes some end gears, some carrier gears, a top gear immediately below power transmission shaft, end End tooth wheel and screw tap are quantitatively identical and to set the quantity of end gear be N, and N is the integer not less than 3, the number of carrier gear It is N -2 to measure, and some carrier gears, a top gear are arranged along the length direction in-line equi-spaced apart of gear-box, terminal teeth Take turns along the length direction in-line equi-spaced apart arrangement of gear-box, top gear and on position and its two corresponding adjacent end End tooth wheel is engaged, and each carrier gear is engaged with position with its corresponding remaining each two adjacent end gear；

Coaxially connected between power transmission shaft and top gear, screw tap corresponds coaxially connect with end gear lower end respectively.

4. the thread cover plate for cleaner multi-station tapper according to claim 1, it is characterised in that：

Lower horizontal in the casing is provided with the conveyer belt below loading cylinder, the footpath of the width more than loading cylinder of conveyer belt To length.