CN114902862A - Disc type reclaiming machine - Google Patents

Abstract

The utility model relates to a disc type rubbing machine, relate to the field of rubbing, it includes the casing, drive assembly and the blade disc of connection on drive assembly that are located the casing, be equipped with feed inlet and discharge gate on the casing, can dismantle on the blade disc and be connected with first cutter portion and second cutter portion, first cutter portion and second cutter portion are located two circular sides that the blade disc is relative respectively, first cutter portion includes two first cutter groups, first cutter group includes a plurality of first broken swoves, second cutter portion includes two second cutter groups, second cutter group includes a plurality of second broken swoves, first cutter portion sets up with second cutter portion is crisscross, can dismantle on the arc lateral wall of blade disc and be connected with a plurality of third broken swoves, can dismantle in the casing and be connected with fixed sword, first broken sword, the orientation of second broken sword is the same with third broken sword, and all opposite with fixed sword orientation. This application has the crushing effect who improves the machine of reclaiming rubbing, improves the effect to the crushing capacity of plant.

Description

Disc type reclaiming machine

Technical Field

The application relates to the field of reclaiming, in particular to a disc type reclaiming machine.

Background

On a new land or region, the land before carrying out municipal construction or farming mostly has been idle a period, can be full of trees or weeds on the idle land, influence the environment, must cultivate the land earlier, generally need clear up the trees and the weeds above the land earlier, and traditional clearance mode is artifical clearance, clears up inefficiency, and work load is big. In order to solve the problem of low labor efficiency, people start to use a breaker, and a disc breaker is an optimal solution for covering small-diameter trees and shrubs.

To the correlation technique among the aforesaid, the inventor thinks that current disk type rubbing crusher crushing effect is unstable, leads to partial plant can't be by abundant breakage, and will lead to the blade disc to be difficult to rotate when massive plant can not be by the breakage to lead to rubbing the machine impaired, influence the soil and rub deserted, thereby influence the environment.

Disclosure of Invention

In order to improve the crushing effect of rubbing machine, improve the crushing ability to the plant, this application provides a disk rubbing machine.

The application provides a disk type rubbing machine adopts following technical scheme:

a disc type rubbing machine comprises a shell, a driving assembly and a cutter head, wherein the driving assembly is positioned on the shell, the cutter head is connected to the driving assembly, a feed inlet and a discharge outlet are formed in the shell, a first cutter part and a second cutter part are detachably connected to the cutter head, the first cutter part and the second cutter part are respectively positioned on two opposite circular side surfaces of the cutter head, the first cutter part comprises two first cutter groups, each first cutter group comprises a plurality of first crushing cutters, the first crushing cutters are sequentially arranged along an arc direction, the arc opening directions formed by the two groups of first cutter groups are opposite, the two groups of first cutter groups are arranged in a staggered mode, the second cutter part comprises two second cutter groups, each second cutter group comprises a plurality of second crushing cutters, the second crushing cutters are arranged along the arc direction, and the arc opening directions formed by the two groups of second cutter groups are opposite, two sets of second cutter group sets up in a staggered manner, first cutter portion with second cutter portion sets up in a staggered manner, can dismantle on the arc lateral wall of blade disc and be connected with a plurality of third broken swoves, can dismantle in the casing and be connected with the stationary knife, first broken sword, the broken sword of second with the broken sword orientation of third is the same, and all is opposite with the stationary knife orientation.

Through adopting above-mentioned technical scheme, drive assembly drives the blade disc and rotates fast, the plant arrives at the feed inlet, through first broken sword, the rotation of second broken sword and third broken sword is brought the plant into the casing, through first broken sword, the fast rotation of second broken sword and third broken sword is with the broken cutting of plant, it is relative with the tool bit of fixed sword to rotate the tool bit of in-process third broken sword at the blade disc simultaneously, carry out the breakage with bold plant through the shearing force and cut apart, improve the crushing effect to green planting, two sets of first cutter group and two sets of second cutter group do not crisscross the setting, can make the blade disc rotate the in-process, dynamic balance is realized to a plurality of first broken swoves and second broken sword, the plant homoenergetic that can be cut at blade disc surface optional position, further improve the crushing effect of abreast machine, improve the crushing ability to green planting.

Optionally, a first mounting groove is formed in the cutter head, a first connecting piece is arranged in the first mounting groove, a first mounting block is inserted in the first mounting groove, the first mounting block can be detachably connected to the first connecting piece, and the first crushing cutter can be detachably connected to the first mounting block.

Through adopting above-mentioned technical scheme, peg graft first installation piece in first mounting groove, connect first installation piece on first connecting piece to realize the installation of first broken sword, when first broken sword damages, can in time change through dismantling, reduce because the damage of first broken sword can't realize the breakage to green planting, thereby influence the possibility of the crushing effect of rubbing machine.

Optionally, a second mounting groove is formed in the cutter head, a second connecting piece is arranged in the second mounting groove, a second mounting block is inserted in the second mounting groove, the second mounting block can be detachably connected to the second connecting piece, and the second crushing cutter can be detachably connected to the second mounting block.

Through adopting above-mentioned technical scheme, peg graft the second installation piece in the second mounting groove, connect the second installation piece on the second connecting piece to realize the installation of the broken sword of second, when the broken sword of second damages, can in time change the broken sword of second through dismantling, reduce because the broken sword of second damages can't realize the breakage to green planting, thereby influence the possibility of the crushing effect of rubbing machine.

Optionally, a support frame is fixedly connected in the casing, a positioning groove is formed in the support frame, a fixing block is fixedly connected in the positioning groove, a connecting block is inserted between the support frame and the casing, the connecting block is connected with the fixing block, and the fixing knife is detachably connected to the connecting block.

Through adopting above-mentioned technical scheme, the stationary knife is installed on the connecting block, is connected with the fixed block through pegging graft again between support frame and casing, realizes the change that can dismantle of stationary knife on the casing, reduces because the stationary knife damages can't realize the breakage to green planting to influence the possibility of rubbing machine's crushing effect.

Optionally, the first crushing cutter comprises a cutter head and a connecting rod fixedly connected to the tail of the cutter head and used for installation, the cutter head is surrounded by four inclined blades, notches are formed in the end portions of the four blades, so that the joint of the two adjacent blades forms a tip, and the second crushing cutter and the third crushing cutter are both the same as the first crushing cutter in shape.

Through adopting above-mentioned technical scheme, the tool bit portion forms four most advanced and is used for broken plant, and the connecting rod is used for being connected with first installation piece, second installation piece or blade disc, makes things convenient for the tool bit to dismantle the change, further saves the cost.

Optionally, the drive assembly includes drive motor, connects the transmission case on the casing and is located transmission case internal drive axle, the transmission axle is used for connecting the drive motor output shaft with the blade disc.

Through adopting above-mentioned technical scheme, driving motor passes through the transmission shaft and drives the blade disc rotation to realize high-efficient cutting.

Optionally, the transmission shaft with be connected with the spline housing between the driving motor output shaft, spline housing intensity is less than transmission shaft and driving motor output shaft intensity, internal spline and external splines have been seted up on the spline housing, the transmission shaft is close to the spread groove has been seted up to driving motor one end, the spread groove internal fixation inlays and is equipped with first spline housing, first spline housing with the cooperation of external splines joint, the fixed cover in the driving motor output shaft outside be equipped with internal splines joint complex second spline housing.

Through adopting above-mentioned technical scheme, installation spline shaft sleeve between transmission shaft and driving motor output shaft, spline shaft sleeve's internal spline is connected with first spline housing, spline shaft sleeve's external spline and second spline connection, when driving motor during operation, it rotates to drive the transmission shaft through spline fit, spline shaft sleeve intensity is less than transmission shaft and driving motor output shaft simultaneously, when the great blade disc that leads to of plant blocks, because spline shaft sleeve intensity is little, spline shaft sleeve damages at first, thereby protection transmission shaft and driving motor output shaft, it can reuse to change spline shaft sleeve, improve the operating efficiency of milling machine.

Optionally, keep away from feed inlet and discharge gate one side on the casing and be equipped with and prevent flying the subassembly, prevent flying the subassembly and include the reinforcing bar, be located reinforcing bar both ends and can dismantle the spacing hoop of connection on the casing and wear to establish a plurality of chains on the reinforcing bar.

Through adopting above-mentioned technical scheme, the chain is installed on the reinforcing bar, plays the possibility that prevents the plant fragment and splash in blade disc one side, can protect operating personnel's life safety on the one hand, and on the other hand can carry out many times breakage with the fragment separation in the casing, improves crushing effect.

Optionally, the shell is detachably connected with a front stop assembly, and the front stop assembly comprises two connecting rods connected with the shell, a horizontal stop rod connected to one end of the two connecting rods, which deviates from the shell, and two inclined stop rods located at two ends of the horizontal stop rod.

Through adopting above-mentioned technical scheme, when the great plant of breakage, the plant can probably empty along with rubbing machine's work and removal emergence, and the preceding fender subassembly can reduce the plant and to the possibility that casing one side was emptyd, makes the plant can enter into the casing from the feed inlet smoothly and carries out the breakage, improves rubbing machine's crushing effect.

To sum up, the application comprises the following beneficial technical effects:

1. through stationary knife and with the first broken sword opposite of stationary knife orientation, the broken sword of second, the setting of the broken sword of third, can make stationary knife and first broken sword, the cooperation of the broken sword of second and third, rely on the shearing force to carry out the breakage from the plant that the feed inlet got into, be the first broken sword that the arc was arranged simultaneously, the broken sword of second can rotate the in-process and realize dynamic balance at the rotation blade disc, make the plant homoenergetic that enters into in the casing broken by the cutting, improve the crushing ability to the plant.

2. Through the setting of the spline shaft sleeve of connecting between transmission shaft and driving motor output shaft, when the great blade disc of plant was blocked, spline housing intensity was less damaged under great torsion effect, can directly be changed, can not damage transmission shaft and driving motor to reduce the possibility of rubbing machine damage, improve the life of rubbing machine.

Drawings

Fig. 1 is an overall structural schematic diagram of a disc type milling machine according to an embodiment of the application.

FIG. 2 is a schematic diagram of a feed inlet and a discharge outlet of the disc type milling machine in one side of the embodiment of the application.

Fig. 3 is an exploded view of the drive assembly.

Fig. 4 is a schematic view of the structure on the cutter head and an exploded view between the first crushing cutter, the second crushing cutter and the cutter head.

Fig. 5 is an enlarged view at a in fig. 2.

Fig. 6 is an enlarged view at B in fig. 3.

Description of reference numerals: 1. a housing; 11. a motor housing; 12. a wing plate; 13. a feed inlet; 131. a support plate; 132. a reinforcing plate; 14. a discharge port; 15. a front fender assembly; 151. a connecting rod; 152. a horizontal stop lever; 153. a tilt bar; 16. an anti-fly assembly; 161. reinforcing steel bars; 162. a limiting hoop; 163. a chain; 17. a support frame; 171. positioning a groove; 172. a fixed block; 18. connecting blocks; 19. fixing a knife; 2. a drive assembly; 21. a drive motor; 22. a transmission case; 23. a drive shaft; 24. a spline shaft sleeve; 231. connecting grooves; 25. a first spline housing; 26. a second spline housing; 3. a first crushing knife; 31. a cutter head; 32. a connecting rod; 33. a notch; 4. a second crushing knife; 5. a third crushing cutter; 51. connecting sheets; 52. a third mounting block; 6. a cutter head; 61. a first mounting groove; 62. a first connecting plate; 63. a first mounting block; 631. a first bump; 64. a second mounting groove; 65. a second connecting plate; 66. a second mounting block; 661. and a second bump.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses disk type reclaiming machine.

Referring to fig. 1 and 2, the disc type milling machine comprises a shell 1, wherein one side of the shell 1 is open, a feeding hole 13 and a discharging hole 14 are formed in one open side of the shell 1, the disc type milling machine further comprises a driving assembly 2 located on the shell 1 and a cutter head 6 connected to the driving assembly 2, the feeding hole 13 and the discharging hole 14 are respectively located on two sides of the cutter head 6, a reinforcing plate is connected to the feeding hole 13 through bolts, and the reinforcing plate comprises a supporting plate 131 and reinforcing plates 132 located at two ends of the supporting plate 131.

Referring to fig. 3, the driving assembly 2 includes a driving motor 21, a transmission case 22 connected to the housing 1, and a transmission shaft 23 located in the transmission case 22, wherein one end of the transmission case 22 is fixedly connected with a flange, the flange of the transmission case 22 is connected with the housing 1 through a bolt, the housing 1 is fixedly connected with a motor housing 11, the motor housing 11 covers the driving motor 21 and the transmission case 22, and the driving motor 21 is a hydraulic gear motor.

Referring to fig. 3, the transmission shaft 23 has been seted up near driving motor 21 one end tip connection groove 231, interference fit inlays in connection groove 231 and is equipped with first spline housing 25, the fixed cover in the driving motor 21 output shaft outside is equipped with second spline housing 26, be connected with spline shaft sleeve 24 between transmission shaft 23 and the driving motor 21 output shaft, internal spline has been seted up to spline shaft sleeve 24 inner wall, external spline has been seted up on spline shaft sleeve 24 lateral wall, internal spline and the 26 joint of second spline housing, external spline and the cooperation of first spline housing 25 joint.

Referring to fig. 2 and 3, the strength of the spline shaft sleeve 24 is smaller than the strength of the transmission shaft 23 and the strength of the output shaft of the driving motor 21, the driving motor 21 drives the transmission shaft 23 to rotate through the matching of the spline shaft sleeve 24 when working, the end part of the transmission shaft 23 is fixedly connected with a flange, the flange of the transmission shaft 23 is connected with the cutter head 6 through a bolt, when the cutter head 6 is clamped by plants, the spline shaft sleeve 24 is damaged firstly, and the transmission shaft 23 and the output shaft of the driving motor 21 can be protected by replacing the spline shaft sleeve 24.

Referring to fig. 4, a first cutter portion and a second cutter portion are detachably connected to the cutter head 6, the first cutter portion and the second cutter portion are respectively located on two opposite circular side surfaces of the cutter head 6, the first cutter portion and the second cutter portion are arranged in a staggered manner, the first cutter portion includes two first cutter groups, and the second cutter portion includes two second cutter groups.

Referring to fig. 4, the first cutter set includes a plurality of first crushing cutters 3, the plurality of first crushing cutters 3 are arranged along a semi-circular arc direction and sequentially connected end to end, circular arc openings surrounded by two sets of first cutter sets are oppositely arranged, and the two sets of first cutter sets are arranged in a staggered manner.

Referring to fig. 4, the second cutter set includes a plurality of second crushing cutters 4, the second crushing cutters 4 are arranged along the semi-circular arc direction and sequentially connected end to end, the circular arc opening directions surrounded by the two sets of second cutter sets are opposite to each other, the two sets of second cutter sets are staggered, and the orientations of the cutter heads 31 of the first crushing cutters 3 and the second crushing cutters 4 are consistent.

Referring to fig. 4, first crushing sword 3 includes tool bit 31 and fixed connection is used for the connecting rod 32 of erection joint at tool bit 31 afterbody, set up screw thread on the connecting rod 32, tool bit 31 is enclosed by the blade that four slopes set up, the shape of tool bit 31 is the open trapezoidal of one end, wherein open end area is greater than another end area, connecting rod 32 is connected in the less one end of area, all set up breach 33 on each blade of the open one end of tool bit 31, breach 33 is the V-arrangement, breach 33 constantly extends the deepening from both ends to the center and forms most advanced breach 33 promptly, the tip of two adjacent blade junctions forms most advanced, be used for cutting green planting. The second crushing blade 4 has the same structure as the first crushing blade 3.

Referring to fig. 4, a first mounting groove 61 is formed in the cutter head 6, a first connecting piece is arranged in the first mounting groove 61, the first connecting piece is a first connecting plate 62, the first connecting plate 62 is in interference fit with the first mounting groove 61, a first mounting block 63 is mounted in the first mounting groove 61, a first convex block 631 fixedly connected to the first mounting block 63 is arranged on the first mounting block 63, the first convex block 631 is in splicing fit with the first mounting groove 61, a bolt is in threaded connection with the first connecting plate 62, and the first convex block 631 is connected with the first connecting plate 62.

Referring to fig. 4, the connecting rod 32 of the first crushing cutter 3 is inserted into the first mounting block 63, and the connecting rod 32 and the cutter head 31 are detachably connected to the first mounting block 63 through a nut at the other end.

Referring to fig. 4, a second mounting groove 64 is formed in the cutter head 6, a second connecting piece is arranged in the second mounting groove 64 and is a second connecting plate 65, a second bump 661 is arranged on the second mounting block 66, the second bump 661 is in plug-in fit with the second mounting groove 64, and a bolt is connected to the second connecting plate 65 through a screw thread and connects the second bump 661 with the second connecting plate 65.

Referring to fig. 5, fixedly connected with support frame 17 in casing 1, support frame 17 are the setting of door shape, and include two with casing 1 fixedly connected with riser and the diaphragm of connection between two risers, two riser parallel arrangement have seted up constant head tank 171 on the diaphragm, constant head tank 171 is logical groove, through interference fit fixedly connected with fixed block 172 in the constant head tank 171, it has connecting block 18 to peg graft between support frame 17 and the casing 1, connecting block 18 passes through bolted connection with fixed block 172.

Referring to fig. 5, the fixed knife 19 is connected to the connecting block 18, the fixed knife 19 has the same structure as the first crushing knife 3, and the connecting rod 32 of the fixed knife 19 penetrates through the connecting block 18 and is fixed by a screw cap. The fixed knives 19 are directed opposite to the first crushing knife 3 and the second crushing knife 4.

Referring to fig. 4, a plurality of connecting pieces 51 are detachably connected to the arc-shaped side wall of the cutter head 6 along the circumferential direction of the arc-shaped side wall, a third mounting block 52 is fixedly connected to each connecting piece 51, a third crushing cutter 5 is detachably connected to each third mounting block 52, the structure of the third crushing cutter 5 is the same as that of the first crushing cutter 3 and that of the second crushing cutter 4, the connecting rod 32 of the third crushing cutter 5 penetrates through the third mounting block 52, and the third crushing cutter 5 is fixed to the third mounting block 52 through a nut.

Referring to fig. 4 and 5, the direction of the bit 31 of the third crushing cutter 5 is the same as the direction of the bit 31 of the first crushing cutter 3 and the second crushing cutter 4, and is opposite to the direction of the bit 31 of the fixed cutter 19.

Referring to fig. 6, one side of keeping away from feed inlet 13 and discharge gate 14 on casing 1 is provided with prevents flying subassembly 16, prevent flying subassembly 16 includes reinforcing bar 161, be located reinforcing bar 161 both ends can dismantle the spacing hoop 162 of connection on casing 1 and wear to establish a plurality of chains 163 on reinforcing bar 161, spacing hoop 162 is used for fixing reinforcing bar 161 on casing 1, chains 163 evenly arranges along reinforcing bar 161 length direction, chains 163 is provided with two sections at least, this application is provided with the three-section, prevent flying subassembly 16 and be provided with three groups along casing 1 circumference, adjacent two sets of prevent flying and be the slope setting between subassembly 16, chains 163 is the galvanized iron material.

Referring to fig. 1 and 2, two wing plates 12 are fixedly connected to a housing 1, the two wing plates 12 are arranged in parallel, a front stop assembly 15 is detachably connected between the two wing plates 12, and the front stop assembly 15 includes two connecting rods 151 connected to the wing plates 12, a horizontal stop rod 152 connected to one end of the two connecting rods 151 away from the housing 1, and two inclined stop rods 153 located at two ends of the horizontal stop rod 152.

Referring to fig. 1 and 2, a bolt is screwed into the connecting rod 151 through the wing plate 12 to fixedly connect the two connecting rods 151 to the two wing plates 12, respectively, and the connecting rod 151, the horizontal blocking rod 152 and the inclined blocking rod 153 are square tubes.

The implementation principle of the embodiment is as follows: when the rubbing machine begins to rub, driving motor 21 drives the drive shaft through spline shaft sleeve 24 and rotates, thereby it rotates to drive blade disc 6, the plant gets into from feed inlet 13, along with the fast rotation of blade disc 6, it continuously moves to casing 1 to drive the plant, thereby it needs broken plant to enter into casing 1 to make, at first broken sword 3, the rotation in-process of second broken sword 4 and third broken sword 5 is constantly to the plant cutting breakage, third broken sword 5 produces the shearing force with the 19 cooperations of stationary knife simultaneously, it is broken with bold plant, piece after the breakage is discharged from discharge gate 14.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. The utility model provides a disk type rubbing machine, includes casing (1), drive assembly (2) that are located casing (1) and blade disc (6) of connection on drive assembly (2), be equipped with feed inlet (13) and discharge gate (14) on casing (1), its characterized in that: the cutter head (6) is detachably connected with a first cutter part and a second cutter part, the first cutter part and the second cutter part are respectively positioned on two opposite circular side surfaces of the cutter head (6), the first cutter part comprises two first cutter groups, the first cutter groups comprise a plurality of first crushing cutters (3), the first crushing cutters (3) are sequentially arranged along an arc direction, the arc opening directions surrounded by the two first cutter groups are opposite, the two first cutter groups are arranged in a staggered manner, the second cutter part comprises two second cutter groups, the second cutter groups comprise a plurality of second crushing cutters (4), the second crushing cutters (4) are arranged along the arc direction, the arc opening directions surrounded by the two second cutter groups are opposite, the two second cutter groups are arranged in a staggered manner, and the first cutter part and the second cutter part are arranged in a staggered manner, can dismantle on the arc lateral wall of blade disc (6) and be connected with a plurality of third broken sword (5), can dismantle in casing (1) and be connected with stationary knife (19), first broken sword (3), second broken sword (4) with third broken sword (5) orientation is the same, and all is opposite with stationary knife (19) orientation.

2. The disc topology machine of claim 1, wherein: first mounting groove (61) have been seted up on blade disc (6), be provided with first connecting piece in first mounting groove (61), it has first installation piece (63) to peg graft in first mounting groove (61), first installation piece (63) can be dismantled and connect on first connecting piece, first broken sword (3) can be dismantled and connect on first installation piece (63).

3. The disc topology machine of claim 1, wherein: the cutter head is characterized in that a second mounting groove (64) is formed in the cutter head (6), a second connecting piece is arranged in the second mounting groove (64), a second mounting block (66) is inserted in the second mounting groove (64), the second mounting block (66) can be detachably connected to the second connecting piece, and the second crushing cutter (4) can be detachably connected to the second mounting block (66).

4. The disc topology machine of claim 1, wherein: fixedly connected with support frame (17) in casing (1), constant head tank (171) have been seted up on support frame (17), fixedly connected with fixed block (172) in constant head tank (171), support frame (17) with it has connecting block (18) to peg graft between casing (1), connecting block (18) with fixed block (172) are connected, fixed sword (19) can be dismantled and connect on connecting block (18).

5. The disc topology machine of claim 1, wherein: the first crushing cutter (3) comprises a cutter head (31) and a connecting rod (32) fixedly connected to the tail of the cutter head (31) and used for installation, the cutter head (31) is surrounded by four inclined blades, notches (33) are formed in the end portions of the four blades, the joint of the two adjacent blades forms a tip end, and the second crushing cutter (4) and the third crushing cutter (5) are identical to the first crushing cutter (3) in shape.

6. The disc topology machine of claim 1, wherein: drive assembly (2) include driving motor (21), connect transmission case (22) on casing (1) and be located transmission case (22) internal drive axle (23), transmission axle (23) are used for connecting driving motor (21) output shaft with blade disc (6).

7. The disc topology machine of claim 6, wherein: transmission shaft (23) with be connected with spline shaft sleeve (24) between driving motor (21) output shaft, spline shaft sleeve (24) intensity is less than transmission shaft (23) and driving motor (21) output shaft intensity, internal spline and external spline have been seted up on spline shaft sleeve (24), transmission shaft (23) are close to driving motor (21) one end has seted up spread groove (231), spread groove (231) internal fixation inlays and is equipped with first spline housing (25), first spline housing (25) with the cooperation of external spline joint, driving motor (21) output shaft outside fixed cover be equipped with internal spline joint complex second spline housing (26).

8. The disc topology machine of claim 1, wherein: keep away from feed inlet (13) and discharge gate (14) one side on casing (1) and be equipped with and prevent flying subassembly (16), prevent flying subassembly (16) including reinforcing bar (161), be located reinforcing bar (161) both ends and can dismantle spacing hoop (162) of connection on casing (1) and wear to establish a plurality of chains (163) on reinforcing bar (161).

9. The disc topology machine of claim 1, wherein: keep off subassembly (15) before can dismantling on casing (1), keep off subassembly (15) including two connecting rods (151) that link to each other with casing (1), connect horizontal pin (152) that deviate from casing (1) one end and two slope pin (153) that are located horizontal pin (152) both ends in two connecting rods (151).

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