CN210079724U - Moringa oleifera leaf crusher - Google Patents

Abstract

The utility model relates to the technical field of a crushing device, in particular to a moringa oleifera leaf crusher; the dust removal mechanism can be added, the existence amount of dust is reduced, the influence of the dust on the recovery quality is reduced, the influence of the dust on the later processing is reduced, and the use reliability is improved; the power distribution box comprises a box body, be provided with the working chamber in the box, the box top is provided with the import pipe, the inside upper left side of working chamber and upper right side all are provided with first pivot, the box front end is provided with first motor, still include two sets of second motors, the working chamber downside is provided with the filter, all be provided with the slider in two sets of slides, two sets of slider tops and bottom all are provided with the spring, two sets of connecting plate bottoms all are provided with the eccentric wheel, left side eccentric wheel left end and right side eccentric wheel right-hand member all fixed are provided with first connecting axle, left side first connecting axle left end and right side first connecting axle right-hand member all fixed are provided with first bevel gear, two sets of.

Description

Moringa oleifera leaf crusher

Technical Field

The utility model relates to a reducing mechanism's technical field especially relates to a peppery wooden leaf rubbing crusher.

Background

As is well known, the moringa oleifera leaf crusher is a device used for crushing in the moringa oleifera leaf recovery treatment process, can improve the crushing degree of leaves, and is widely used in the field of crushing devices; the existing moringa oleifera leaf crusher comprises a box body, a working cavity is arranged in the box body, an inlet pipe is arranged at the top end of the box body, the output end of the inlet pipe is communicated with the top end of the working cavity, first rotating shafts are arranged on the left upper side and the right upper side in the working cavity, the front ends and the rear ends of the two groups of first rotating shafts are respectively connected with the front end and the rear end of the working cavity, a plurality of groups of crushing cutters are uniformly and fixedly arranged on the outer side walls of the two groups of first rotating shafts, a first motor is arranged at the front end of the box body, the output end of the first motor penetrates through the front end of the box body and then is connected with the front end of the right first rotating shaft, second rotating shafts are arranged on the left side and the right side of the rear end of the box body and then are respectively connected with the rear ends of the two groups of first rotating shafts, first gears are fixedly arranged at the; when the moringa oleifera leaf crusher is used, leaves are conveyed into a working cavity from an inlet pipe, a first motor drives a first rotating shaft on the right side to rotate, two groups of first rotating shafts rotate along with the first rotating shaft under the meshing action of two groups of first gears, and a plurality of groups of crushing knives rotate along with the first rotating shafts when the two groups of first rotating shafts rotate, so that the crushing operation on the leaves is realized; the moringa oleifera leaf pulverizer finds that the leaves have no more dust in use, the dust affects the recovery processing of the leaves, and meanwhile, the recovery quality is affected.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an increase dust removal mechanism reduces the existence volume of dust, reduces the dust to the influence of retrieving quality, reduces the influence of dust to later stage processing, improves the peppery wooden leaf rubbing crusher who uses the reliability.

The utility model discloses a peppery wooden leaf rubbing crusher, the power distribution box comprises a box body, be provided with the working chamber in the box, the box top is provided with the import pipe, import pipe output end and working chamber top intercommunication, upper left side and upper right side in the working chamber all are provided with first pivot, two sets of first pivot front ends and rear end respectively with working chamber front end and rear end rotatable coupling, two sets of first pivot lateral walls all are fixed evenly and are provided with multiunit crushing sword, the box front end is provided with first motor, first motor output end passes behind the box front end and is connected with right side first pivot front end, box rear end left side and rear end right side all are provided with the second pivot, two sets of second pivot front ends pass behind box rear end left side and rear end right side respectively and are connected with two sets of first pivot rear ends, two sets of second pivot rear ends all are fixed and are provided with the meshing gear, left side meshing gear right-hand member and right side meshing gear left; the automatic filter box comprises a box body, and is characterized by further comprising two groups of second motors, wherein a filter plate is arranged on the lower side of the working cavity, the outer side wall of the filter plate is in contact with the side wall of the working cavity, slide ways are arranged at the left end and the right end of the working cavity, slide blocks are arranged in the two groups of slide ways, the right end of a left slide block and the left end of a right slide block are respectively connected with the left end and the right end of the filter plate, springs are arranged at the top ends and the bottom ends of the two groups of slide ways, the top ends and the bottom ends of the two groups of springs are respectively connected with the top ends of the two groups of slide ways and the bottom ends of the two groups of slide ways, connecting plates are fixedly arranged at the left end and the right end of the left slide block, first connecting holes are arranged at the left end and the right end of the box body, two, the left end of the left first connecting shaft and the right end of the right first connecting shaft are fixedly provided with first bevel gears, the bottoms of the two groups of first bevel gears are provided with second bevel gears, the right end of the left second bevel gear and the left end of the right second bevel gear are in meshing contact with the bottoms of the two groups of first bevel gears respectively, the output ends of the two groups of second motors are connected with the bottoms of the two groups of second bevel gears respectively, the rear end of the box body is provided with an outlet pipe, and the input end of the outlet pipe is communicated with.

The utility model discloses a peppery wooden leaf rubbing crusher, the import pipe front end is provided with first connecting pipe, first connecting pipe output end is fixed and is provided with first solid fixed ring, the fixed solid fixed ring of second that is provided with of import pipe input end, the solid fixed ring front end of second and the contact of first solid fixed ring rear end, first solid fixed ring upside and downside all are provided with the second connecting hole, second fixed plate ring upside and downside all are provided with the thread groove, two sets of bolt rear ends are passed respectively behind two sets of second connecting holes respectively the spiral shell dress insert to two sets of thread grooves in, box right-hand member upside is provided with the air exhauster, air exhauster input and working chamber right-hand member upside intercommunication, box front end downside is provided with the opening, opening and working chamber front end downside intercommunication, be provided with the shutter in the opening, shutter lateral.

The utility model discloses a peppery wooden leaf rubbing crusher still includes the second connecting pipe, second connecting pipe output and import pipe top intercommunication, import pipe front side intercommunication is provided with the valve.

The utility model discloses a peppery wooden leaf rubbing crusher, second connecting pipe top are provided with the fender lid, keep off lid bottom and the contact of second connecting pipe top, keep off the lid right-hand member articulated with second connecting pipe rear end.

The utility model discloses a peppery wooden leaf rubbing crusher, filter top left side and top right side are all fixed and are provided with first baffle, and filter bottom left side and bottom right side are all fixed and are provided with the second baffle, and left side first baffle and left side second baffle all contact with working chamber left side, and right side first baffle and right side second baffle right-hand member all contact with the working chamber right side.

The utility model discloses a peppery wooden leaf rubbing crusher, two sets of connecting plates bottoms all are provided with the recess, and two sets of eccentric wheel tops contact with two sets of recess tops respectively.

The utility model discloses a peppery wooden leaf rubbing crusher still includes two sets of back shafts, and two sets of back shafts set up respectively in box left end and right-hand member, and left side back shaft left end and right side back shaft right-hand member are connected with left side eccentric wheel right-hand member and right side eccentric wheel left end respectively, and left side back shaft right-hand member and right side back shaft left end respectively with box left end and right-hand member rotatable coupling.

The utility model discloses a peppery wooden leaf rubbing crusher, the fixed removal wheel that is provided with in box bottom left front side, left rear side, right front side and right rear side, box rear end upper side is provided with the handle.

Compared with the prior art, the beneficial effects of the utility model are that: the crushed leaves fall to the top end of the filter plate, the filter plate filters dust, meanwhile, two groups of second motors drive two groups of second bevel gears to rotate, two groups of first bevel gears rotate along with the first bevel gears, two groups of first connecting shafts rotate along with the first connecting shafts, two groups of eccentric wheels rotate along with the first connecting shafts, two groups of connecting plates are driven to move up and down along with the second eccentric wheels, two groups of sliding blocks move up and down along two groups of sliding ways respectively during the moving process of the two groups of connecting plates in the up and down direction, the filter plate moves up and down along with the first connecting shafts, when the two groups of sliding blocks move up and down, the stability of the two groups of sliding blocks moving up and down can be increased under the action of the springs, the filter plate shakes up and down to increase the dust sinking speed, the leaf and dust separating speed is increased, two sets of second motors stop working, and the leaf after smashing reduces the existence volume of dust from the outlet pipe output, reduces the dust to the influence of retrieving the quality, reduces the influence of dust to later stage processing.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a right side view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is an enlarged view of portion B of FIG. 2;

in the drawings, the reference numbers: 1. a box body; 2. an inlet pipe; 3. a first rotating shaft; 4. a crushing knife; 5. a first motor; 6. a second rotating shaft; 7. a meshing gear; 8. a second motor; 9. a filter plate; 10. a slider; 11. a spring; 12. a connecting plate; 13. an eccentric wheel; 14. a first connecting shaft; 15. a first bevel gear; 16. a second bevel gear; 17. an outlet pipe; 18. a first connecting pipe; 19. a first retaining ring; 20. a second retaining ring; 21. a bolt; 22. an exhaust fan; 23. a second connecting pipe; 24. a valve; 25. a blocking cover; 26. a first baffle plate; 27. a second baffle; 28. a groove; 29. a support shaft; 30. a moving wheel; 31. a handle.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in figures 1 to 4, the horseradish tree leaf grinder of the utility model comprises a box body 1, a working chamber is arranged in the box body 1, an inlet pipe 2 is arranged at the top end of the box body 1, the output end of the inlet pipe 2 is communicated with the top end of the working chamber, first rotating shafts 3 are arranged at the upper left side and the upper right side in the working chamber, the front ends and the rear ends of two groups of first rotating shafts 3 are respectively and rotatably connected with the front end and the rear end of the working chamber, a plurality of groups of grinding knives 4 are uniformly and fixedly arranged on the outer side walls of the two groups of first rotating shafts 3, a first motor 5 is arranged at the front end of the box body 1, the output end of the first motor 5 is connected with the front end of the right first rotating shaft 3 after passing through the front end of the box body 1, second rotating shafts 6 are respectively arranged at the left side and the right side of the rear end of the box body 1, the front ends of the two groups of second rotating shafts 6 are respectively connected, the right end of the left meshing gear 7 is in meshing contact with the left end of the right meshing gear 7; the automatic cleaning device is characterized by further comprising two groups of second motors 8, a filter plate 9 is arranged on the lower side of the working chamber, the outer side wall of the filter plate 9 is in contact with the side wall of the working chamber, slide ways are arranged at the left end and the right end of the working chamber, slide blocks 10 are arranged in the two groups of slide ways, the right end of the left slide block 10 and the left end of the right slide block 10 are respectively connected with the left end and the right end of the filter plate 9, springs 11 are arranged at the top ends and the bottom ends of the two groups of slide ways, the top ends and the bottom ends of the two groups of springs 11 are respectively connected with the top ends of the two groups of slide ways and the bottom ends of the two groups of slide ways, connecting plates 12 are fixedly arranged at the left end of the left slide block 10 and the right end of the right slide block 10, first connecting holes are arranged at the left end and the right, the left end of the left eccentric wheel 13 and the right end of the right eccentric wheel 13 are both fixedly provided with a first connecting shaft 14, the left end of the left first connecting shaft 14 and the right end of the right first connecting shaft 14 are both fixedly provided with first bevel gears 15, the bottom ends of the two groups of first bevel gears 15 are both provided with second bevel gears 16, the right end of the left second bevel gear 16 and the left end of the right second bevel gear 16 are respectively in meshing contact with the bottom ends of the two groups of first bevel gears 15, the output ends of the two groups of second motors 8 are respectively connected with the bottom ends of the two groups of second bevel gears 16, the rear end of the box body 1 is provided with an; the crushed leaves fall to the top end of the filter plate, the filter plate filters dust, meanwhile, two groups of second motors drive two groups of second bevel gears to rotate, two groups of first bevel gears rotate along with the first bevel gears, two groups of first connecting shafts rotate along with the first connecting shafts, two groups of eccentric wheels rotate along with the first connecting shafts, two groups of connecting plates are driven to move up and down along with the second eccentric wheels, two groups of sliding blocks move up and down along two groups of sliding ways respectively during the moving process of the two groups of connecting plates in the up and down direction, the filter plate moves up and down along with the first connecting shafts, when the two groups of sliding blocks move up and down, the stability of the two groups of sliding blocks moving up and down can be increased under the action of the springs, the filter plate shakes up and down to increase the dust sinking speed, the leaf and dust separating speed is increased, two sets of second motors stop working, and the leaf after smashing reduces the existence volume of dust from the outlet pipe output, reduces the dust to the influence of retrieving the quality, reduces the influence of dust to later stage processing.

The utility model discloses a peppery wooden leaf rubbing crusher, 2 front ends of import pipe are provided with first connecting pipe 18, 18 output ends of first connecting pipe are fixed and are provided with first solid fixed ring 19, 2 input ends of import pipe are fixed and are provided with second solid fixed ring 20, 20 front ends of second solid fixed ring and 19 rear end contacts of first solid fixed ring, 19 upside and downside of first solid fixed ring all are provided with the second connecting hole, second solid fixed ring upside and downside all are provided with the thread groove, two sets of bolts 21 rear ends pass two sets of second connecting holes respectively after the spiral shell inserts to two sets of thread grooves respectively, box 1 right-hand member upside is provided with air exhauster 22, the air exhauster 22 input end communicates with working chamber right-hand member upside, box 1 front end downside is provided with the opening, the opening communicates with working chamber front end downside, be provided with the shutter in the opening, shutter lateral wall and; two sets of bolts have improved the solid fixed ring's of first solid fixed ring and second connection stability, simultaneously under the effect of air exhauster, subaerial leaf is transmitted to the work intracavity from first connecting pipe and import pipe under the effect of suction, the collection operation to subaerial leaf has been reduced, improve equipment's use convenience, when need not use first connecting pipe simultaneously, can be with two sets of bolt reverse spiral shell down, take first connecting pipe back down, carry the leaf to the work intracavity from the second connecting pipe, the use limitation of equipment has been reduced.

The utility model discloses a peppery wooden leaf rubbing crusher, still include the second connecting pipe 23, the second connecting pipe 23 output end is communicated with the top of the inlet pipe 2, the front side of the inlet pipe 2 is communicated and is provided with the valve 24; when carrying the leaf to the working chamber from the second connecting pipe, can close the back with the valve and operate, reduced the leaf and exported from import pipe front end, improve and use the reliability.

The utility model discloses a peppery wooden leaf rubbing crusher, second connecting pipe 23 top is provided with fender cover 25, keeps off the contact of cover 25 bottom and second connecting pipe 23 top, keeps off the cover 25 right-hand member and articulates with second connecting pipe 23 rear end; the leaf that keeps off the lid reducible and carry to the work intracavity from first connecting pipe exports from second connecting pipe top, improve equipment's use reliability.

The utility model discloses a peppery wooden leaf rubbing crusher, filter 9 top left side and top right side are all fixed and are provided with first baffle 26, filter 9 bottom left side and bottom right side are all fixed and are provided with second baffle 27, left side first baffle 26 and left side second baffle 27 all contact with the working chamber left side, right side first baffle 26 and right side second baffle 27 right-hand member all contact with the working chamber right side; two sets of first baffles and two sets of second baffles can carry on spacingly to the leaf on filter top, reduce the leaf and enter into two sets of slides in.

The utility model discloses a peppery wooden leaf rubbing crusher, the bottom of two sets of connecting plates 12 is all provided with the recess 28, the top of two sets of eccentric wheels 13 contacts with the top of two sets of recesses 28 respectively; the two groups of grooves can limit the two groups of eccentric wheels, so that the slipping phenomenon of the two groups of eccentric wheels and the two groups of connecting plates is reduced.

The utility model discloses a peppery wooden leaf rubbing crusher still includes two sets of back shafts 29, and two sets of back shafts 29 set up respectively in box 1 left end and right-hand member, and left side back shaft 29 left end and right side back shaft 29 right-hand member are connected with left side eccentric wheel 13 right-hand member and right side eccentric wheel 13 left end respectively, and left side back shaft 29 right-hand member and right side back shaft 29 left end are respectively with box 1 left end and right-hand member rotatable coupling; two sets of back shafts can support two sets of eccentric wheels respectively, reduce the phenomenon that drops of two sets of eccentric wheels.

The utility model discloses a peppery wooden leaf rubbing crusher, the left front side, left rear side, right front side and right rear side of box 1 bottom are fixed with and move wheel 30, the upper side of box 1 rear end is provided with handle 31; when the equipment is displaced, the handle can be pushed, and the equipment is displaced by the moving wheel.

The utility model discloses a peppery wooden leaf rubbing crusher, when it is used, when absorbing subaerial leaf, two sets of bolts have improved the connection stability of first solid fixed ring and second solid fixed ring, simultaneously under the effect of air exhauster, subaerial leaf is transmitted to the working chamber from first connecting pipe and import pipe under the effect of suction, the collection operation to subaerial leaf has been reduced, first motor drives right side first pivot and rotates, two sets of first pivots rotate along with it under the meshing effect of two sets of first gears, the multiunit crushing sword rotates along with it when two sets of first pivots rotate, thereby the crushing operation to the leaf has been realized, the leaf after smashing falls to the filter top, the filter filters the dust, simultaneously two sets of second motors drive two sets of second bevel gears and rotate, two sets of first bevel gears rotate along with it, two groups of first connecting shafts rotate along with the first connecting shafts, two groups of eccentric wheels rotate along with the first connecting shafts, two groups of connecting plates are driven to move up and down when the two groups of connecting plates move up and down, two groups of sliding blocks respectively move up and down in two groups of sliding ways, the filtering plate moves up and down along with the first connecting shafts, when the two groups of sliding blocks move up and down, the stability of the two groups of sliding blocks moving up and down can be improved under the action of springs, the speed of dust sinking can be improved by the up and down shaking of the filtering plate, the separation speed of leaves and dust is improved, the use convenience of the device is improved, after the dust falls into the bottom end of the filtering plate, two groups of second motors stop running, the crushed leaves are output from the outlet pipe, the dust falls into the bottom end of the working chamber, the dust can be cleaned from the through hole, can be with two sets of reverse spiral shell of bolt down, with the back of taking first connecting pipe, when carrying the leaf to the working chamber from the second connecting pipe, can operate after closing the valve, two sets of first baffles and two sets of second baffles can carry on spacingly to the leaf on filter top, reduce the leaf and get into to two sets of slides in.

The installation mode, the connection mode or the arrangement mode of the moringa oleifera leaf crusher of the utility model are common mechanical modes, and the installation mode, the connection mode or the arrangement mode can be implemented as long as the beneficial effects can be achieved; and the motor and the exhaust fan are provided with a control module and an electric wire, and can be used after being plugged, without changing the internal structure.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (8)

1. A horseradish tree leaf crusher comprises a box body (1), a working cavity is arranged in the box body (1), an inlet pipe (2) is arranged at the top end of the box body (1), the output end of the inlet pipe (2) is communicated with the top end of the working cavity, first rotating shafts (3) are respectively arranged at the upper left side and the upper right side in the working cavity, the front ends and the rear ends of two groups of first rotating shafts (3) are respectively and rotatably connected with the front end and the rear end of the working cavity, a plurality of groups of crushing cutters (4) are uniformly and fixedly arranged on the outer side walls of the two groups of first rotating shafts (3), a first motor (5) is arranged at the front end of the box body (1), the output end of the first motor (5) penetrates through the front end of the box body (1) and then is connected with the front end of the first rotating shaft (3), second rotating shafts (6) are respectively arranged at the left side and the right side of the rear end of the box body (1), and the front ends of the two, meshing gears (7) are fixedly arranged at the rear ends of the two groups of second rotating shafts (6), and the right end of the left meshing gear (7) is in meshing contact with the left end of the right meshing gear (7); the device is characterized by also comprising two groups of second motors (8), wherein a filter plate (9) is arranged on the lower side of the working chamber, the outer side wall of the filter plate (9) is contacted with the side wall of the working chamber, slide ways are arranged at the left end and the right end of the working chamber, slide blocks (10) are arranged in the two groups of slide ways, the right end of a left slide block (10) and the left end of a right slide block (10) are respectively connected with the left end and the right end of the filter plate (9), springs (11) are arranged at the top end and the bottom end of the two groups of slide blocks (10), the top end and the bottom end of an upper two groups of springs (11) are respectively connected with the top ends of the two groups of slide ways and the top ends of the two groups of slide blocks (10), connecting plates (12) are fixedly arranged at the left end of the left slide block (10) and the right end of the right, the left end of a left connecting plate (12) and the right end of a right connecting plate (12) respectively penetrate through two groups of first connecting holes, the bottoms of the two groups of connecting plates (12) are respectively provided with an eccentric wheel (13), the left end of the left eccentric wheel (13) and the right end of the right eccentric wheel (13) are respectively fixedly provided with a first connecting shaft (14), the left end of the left first connecting shaft (14) and the right end of the right first connecting shaft (14) are respectively fixedly provided with a first bevel gear (15), the bottoms of the two groups of first bevel gears (15) are respectively provided with a second bevel gear (16), the right end of a left second bevel gear (16) and the left end of a right second bevel gear (16) are respectively in meshing contact with the bottoms of the two groups of first bevel gears (15), the output ends of two groups of second motors (8) are respectively connected with the bottoms of the two groups of second bevel gears (16.

2. The moringa oleifera leaf crusher as claimed in claim 1, wherein a first connecting pipe (18) is arranged at the front end of the inlet pipe (2), a first fixing ring (19) is fixedly arranged at the output end of the first connecting pipe (18), a second fixing ring (20) is fixedly arranged at the input end of the inlet pipe (2), the front end of the second fixing ring (20) is in contact with the rear end of the first fixing ring (19), second connecting holes are respectively arranged at the upper side and the lower side of the first fixing ring (19), thread grooves are respectively arranged at the upper side and the lower side of the second fixing ring, the rear ends of two groups of bolts (21) respectively penetrate through the two groups of second connecting holes and are respectively inserted into the two groups of thread grooves in a screw manner, an exhaust fan (22) is arranged at the upper side of the right end of the box body (1), the input end of the exhaust fan (22) is communicated with the upper side of the, be provided with the shutter in the opening, shutter lateral wall and opening inside wall sealing contact.

3. The moringa oleifera leaf crusher as claimed in claim 2, further comprising a second connecting pipe (23), wherein the output end of the second connecting pipe (23) is communicated with the top end of the inlet pipe (2), and a valve (24) is arranged on the front side of the inlet pipe (2).

4. The moringa oleifera leaf crusher as claimed in claim 3, wherein the second connecting pipe (23) is provided at the top end thereof with a blocking cover (25), the bottom end of the blocking cover (25) is in contact with the top end of the second connecting pipe (23), and the right end of the blocking cover (25) is hinged to the rear end of the second connecting pipe (23).

5. The moringa oleifera leaf grinder as claimed in claim 4, wherein the left side of the top end and the right side of the top end of the filter plate (9) are both fixedly provided with a first baffle (26), the left side of the bottom end and the right side of the bottom end of the filter plate (9) are both fixedly provided with a second baffle (27), the first baffle (26) on the left side and the second baffle (27) on the left side are both in contact with the left side of the working chamber, and the right ends of the first baffle (26) on the right side and the second baffle (27) on the right side are both in contact with the right side of.

6. A moringa leaf grinder as claimed in claim 5, wherein the two sets of connecting plates (12) are provided with grooves (28) at the bottom ends thereof, and the two sets of eccentric wheels (13) are in contact with the top ends of the two sets of grooves (28) at the top ends thereof.

7. The moringa oleifera leaf crusher as claimed in claim 6, further comprising two sets of supporting shafts (29), wherein the two sets of supporting shafts (29) are respectively disposed at the left end and the right end of the box body (1), the left end of the left supporting shaft (29) and the right end of the right supporting shaft (29) are respectively connected with the right end of the left eccentric wheel (13) and the left end of the right eccentric wheel (13), and the right end of the left supporting shaft (29) and the left end of the right supporting shaft (29) are respectively rotatably connected with the left end and the right end of the box body (1).

8. The moringa oleifera leaf crusher as claimed in claim 7, wherein the moving wheels (30) are fixedly arranged at the left front side, the left rear side, the right front side and the right rear side of the bottom end of the box body (1), and the handle (31) is arranged at the upper side of the rear end of the box body (1).

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