CN213617334U

CN213617334U - Brick making device

Info

Publication number: CN213617334U
Application number: CN202022516628.0U
Authority: CN
Inventors: 倪玮; 张祺祺; 杨其超; 魏彬
Original assignee: Shanghai Yuhua Environmental Sanitation Co ltd
Current assignee: Shanghai Yuhua Environmental Sanitation Co ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-07-06
Anticipated expiration: 2030-11-03

Abstract

The utility model belongs to the technical field of the brickmaking technique and specifically relates to a brickmaking device is related to, including material loading subassembly, lower mould subassembly, go up mould subassembly and clean subassembly, reached the aggregate that the moulding-die bottom was bonded in the clearance, and then reduced the effect that this aggregate caused the influence to the fragment of brick shaping.

Description

Brick making device

Technical Field

The application relates to the field of brick making technology, in particular to a brick making device.

Background

With the development of industry and science and technology, environment-friendly and green building materials are widely developed; the currently commonly used brick making equipment is divided into a vacuum brick making machine and a baking-free brick making machine, wherein the vacuum brick making machine uses soil to make adobes, and the mode needs to consume a large amount of soil resources; the baking-free brick machine utilizes the crushed building garbage aggregate to make bricks, and the mode can recycle waste materials and is widely popularized by China.

A conventional non-fired brick machine includes an upper die and a lower die, and during the brick making process, aggregate is injected into the lower die, and then the aggregate is pressed into bricks by the extrusion of the upper die and the lower die.

With respect to the related art in the above, the applicant believes that when the upper press mold moves up, the bottom of the upper press mold binds the aggregate, which affects the formation of the next brick.

SUMMERY OF THE UTILITY MODEL

In order to reduce the influence that the bottom bonding aggregate of top die caused the brick shaping, this application provides a brickmaking device.

The application provides a brick making device adopts following technical scheme:

a brick making device comprises a first support, a second support and a cleaning assembly, wherein the second support is fixedly connected to the upper side of the first support, and a feeding assembly, a lower die assembly, an upper die assembly and the cleaning assembly are arranged on the first support and the second support together;

the feeding assembly comprises a feeding cylinder, a feeding hydraulic cylinder and a feeding box, the feeding cylinder is fixedly connected with the second support, a discharge port of the feeding cylinder is positioned right above the feeding box, the feeding hydraulic cylinder extends out of the feeding hydraulic cylinder, and one end of the feeding hydraulic cylinder, which is far away from the feeding hydraulic cylinder, is fixedly connected with the side wall of the feeding box;

the lower die assembly is positioned on one side, back to the upper material feeding hydraulic cylinder, of the upper material feeding box and comprises a lower die hydraulic cylinder, a lower pressing die and a lifting plate, the lower pressing die is fixedly connected with the first support, a brick making groove penetrating through the lower pressing die is formed in the upper surface of the lower pressing die, a lower die hydraulic rod extends out of one end, close to the lower pressing die, of the lower die hydraulic cylinder, one end, away from the lower die hydraulic cylinder, of the lower die hydraulic rod is fixedly connected with the lifting plate, and the peripheral side wall of the lifting plate is attached to the inner wall of the brick;

the upper die assembly comprises an upper die hydraulic cylinder and an upper pressing die, the upper die hydraulic cylinder is fixedly connected to the second support, an upper die hydraulic rod extends out of the upper die hydraulic cylinder, one end of the upper die hydraulic rod, which is far away from the upper die hydraulic cylinder, is fixedly connected with the upper surface of the upper pressing die, and the lower surface of the upper pressing die is right opposite to the brick making groove;

fixedly connected with cleaning motor on the second support, and cleaning motor stretches out there is the drive shaft, clean subassembly includes scraper blade and upper shed's receiver, and the receiver setting is in drive shaft one side, and scraper blade fixed connection is on the receiver upper surface, and when last moulding-die was in the peak, the scraper blade deviates from the one end of receiver and the lower surface looks butt of last moulding-die.

Through adopting above-mentioned technical scheme, operating personnel can be through the feeding subassembly, go up the mould subassembly and the cooperation of mould subassembly is accomplished the brickmaking operation down, when last moulding-die was in the peak, the scraper blade can be cleared up the aggregate that goes up the moulding-die lower surface bonding under the drive of clean motor, the aggregate of clearance can fall into in the receiver in order to help keeping the clean degree of this brickmaking device, consequently this design has reached the aggregate that the moulding-die bottom of clearance bonds, and then reduce the effect that this aggregate caused the influence to the fragment of brick shaping.

Optionally, the upper surface of the scraper is obliquely arranged, and the highest end of the upper surface of the scraper abuts against the lower surface of the upper pressing die.

Through adopting above-mentioned technical scheme, the design of scraper blade upper surface makes this end of scraper blade be the blade form, and the scraper blade that works as the blade form is favorable to scraping the concrete raw materials that goes up the moulding-die surface bonding more down, and then has reached the effect that improves the clean efficiency of scraper blade.

Optionally, the upper surface of receiver is the slope setting, and the upper surface of receiver along the direction slope downwards gradually that is close to the receiver center.

Through adopting above-mentioned technical scheme, when the aggregate that is scraped by the scraper blade drops to the upper surface of receiver, the design of receiver upper surface helps making the aggregate roll to the opening of receiver in, consequently this design has reached the effect that the aggregate was accomodate to the receiver of being convenient for.

Optionally, the below of receiver articulates there is the bottom plate, this articulated axis level sets up, and this articulated axis is located one side that the receiver bottom surface is close to the drive shaft, the position fixedly connected with strong magnet piece of drive shaft is kept away from to the receiver bottom surface, the bottom plate is the bottom plate of magnetic metal material, and the position that the bottom plate upper surface is close to the strong magnet piece adsorbs mutually with the strong magnet piece, when the bottom plate is in adsorption state with the strong magnet piece, receiver inner space is cut off by the bottom plate with receiver below space, when the bottom plate is in the off-state with the strong magnet piece, receiver inner space is linked together with receiver below space.

Through adopting above-mentioned technical scheme, when bottom plate and powerful magnet piece adsorb mutually, the aggregate can pile up on the bottom plate and be difficult for dropping to first frame, when the bottom plate breaks away from mutually with powerful magnet piece, the aggregate can follow the landing in the receiver under the effect of gravity, consequently this design has reached the effect that makes the receiver can comparatively stable store the aggregate and conveniently discharge the aggregate.

Optionally, the length of the bottom plate along the extending direction of the bottom plate is larger than the length of the storage box extending in the horizontal direction.

Through adopting above-mentioned technical scheme, when needs are derived the aggregate in the containing box, operating personnel need open the bottom plate at first, because the extension length of bottom plate is greater than the extension length of containing box, consequently operating personnel can borrow the power in the part that bottom plate length surpassed the containing box, and this helps operating personnel more laborsaving to open the bottom plate.

Optionally, one side fixedly connected with balancing weight that the drive shaft deviates from the receiver.

Through adopting above-mentioned technical scheme, when the drive shaft is in running state, the design of balancing weight helps the atress more balanced when the drive shaft rotates, and then helps increasing the work stationarity of drive shaft and clean subassembly.

Optionally, threaded hole is seted up to the lateral wall of drive shaft, and the receiver is close to the same threaded hole of lateral wall of drive shaft, and is located the epaxial screw hole of drive and is just right each other with the screw hole that is located the receiver, and the screw hole internal thread connection on drive shaft and the receiver has the bolt.

Through adopting above-mentioned technical scheme, because drive shaft and receiver can dismantle through the bolt and be connected, consequently after receiver and scraper blade used a period, operating personnel can be comparatively convenient with the receiver follow drive shaft dismantlement maintain, consequently this design helps promoting the life of scraper blade and receiver and then helps maintaining the clean quality of scraper blade and receiver.

Optionally, the fixed slot has been seted up to one side that the receiver is close to the drive shaft, and the cell wall at the fixed slot is opened to the screw hole on the receiver, and the fixed slot is the arcwall face towards the groove face of drive shaft, and this arcwall face laminates with the outer wall of drive shaft mutually.

Through adopting above-mentioned technical scheme, the fixed slot has increased the area of contact of drive shaft with the receiver, and then has increased the tightness of being connected of drive shaft with the receiver, and this helps increasing under the operating condition receiver and the reliability of being connected of drive shaft.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the feeding assembly, the lower die assembly, the upper die assembly and the cleaning assembly, the aggregate bonded at the bottom of the upper pressing die is cleaned, and the influence of the aggregate on brick forming is further reduced;

2. the counterweight block is fixedly connected to one side, away from the storage box, of the driving shaft, so that the stress of the driving shaft during rotation is more balanced, and the working stability of the driving shaft and the cleaning assembly is further improved;

3. through set up the fixed slot in the receiver one side that is close to the drive shaft, help increasing under the operating condition receiver and drive shaft be connected the reliability.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Figure 2 is a partial schematic view intended to show a cleaning assembly.

Fig. 3 is an exploded view aimed at showing the connection relationship of the drive shaft and the storage case.

Fig. 4 is a partial schematic view aimed at the connection relationship of the bottom plate and the receiving groove.

Description of reference numerals: 1. a first bracket; 11. making a through hole; 2. a second bracket; 21. mounting holes; 3. a feeding assembly; 31. feeding a material barrel; 32. a feeding hydraulic cylinder; 321. a feed liquid pressure lever; 33. feeding a material box; 331. a feeding trough; 4. an upper die assembly; 41. an upper die hydraulic cylinder; 411. an upper die hydraulic rod; 42. pressing the die; 5. a lower die assembly; 51. a lower die hydraulic cylinder; 511. a lower die hydraulic rod; 52. pressing a die; 521. making a brick groove; 53. a lifting plate; 6. a cleaning assembly; 61. a storage box; 611. a first side plate; 612. fixing grooves; 613. a threaded hole; 614. a bolt; 615. a second side plate; 616. a third side plate; 617. a base plate; 618. a magnet slot; 619. a strong magnet piece; 62. a squeegee; 7. cleaning the motor; 71. a drive shaft; 8. and a balancing weight.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a brick making device.

Referring to fig. 1, a brick making device comprises a first support 1, a second support 2 fixedly connected to the upper surface of the first support 1, and a feeding assembly 3 for feeding, an upper die assembly 4 and a lower die assembly 5 for making bricks, and a cleaning assembly 6 for cleaning the upper die assembly 4, which are arranged on the first support 1 and the second support 2 together; in the course of the brickmaking work, material loading subassembly 3 can transport the aggregate to between cope match-plate pattern subassembly 4 and the lower mould subassembly 5, accomplishes the preparation of brick under the combined action of cope match-plate pattern subassembly 4 and lower mould subassembly 5 this moment, and clean subassembly 6 can clean cope match-plate pattern subassembly 4 so that cope match-plate pattern subassembly 4 can accomplish next brickmaking operation under comparatively clear state afterwards.

Referring to fig. 1, the loading assembly 3 includes a loading barrel 31, a loading hydraulic cylinder 32, and a loading box 33; the upper surface of the second bracket 2 is provided with a mounting hole 21, the upper charging barrel 31 vertically penetrates through the mounting hole 21, and the circumferential outer wall of the upper charging barrel 31 is fixedly connected with the inner wall of the mounting hole 21; the feeding hydraulic cylinder 32 is fixedly connected to the upper surface of the first support 1, a feeding hydraulic rod 321 horizontally extends out of the feeding hydraulic cylinder 32, one end of the feeding hydraulic rod 321, which is far away from the feeding hydraulic cylinder 32, is fixedly connected with the side wall of the feeding box 33, and the upper die assembly 4 and the lower die assembly 5 are positioned on one side of the feeding box 33, which is back to the feeding hydraulic rod 321; the lower surface of the feeding box 33 is attached to the upper surface of the first support 1, the upper surface of the feeding box 33 is provided with a feeding groove 331, the feeding groove 331 penetrates through the feeding box 33, and an opening of the feeding groove 331 on the feeding box 33 is positioned right below the feeding barrel 31; in the brick making process, the aggregates are thrown into the feeding box 33 from the feeding barrel 31, then the feeding hydraulic cylinder 32 pushes the feeding pressure rod 321 in the horizontal direction, the feeding pressure rod 321 pushes the feeding box 33 and conveys the aggregates to the upper die assembly 4 and the lower die assembly 5 for the next brick making process, and after the feeding box 33 completes the feeding process, the feeding pressure rod 321 pulls the feeding box 33 to return to the original position.

Referring to fig. 1 and 2, the lower die assembly 5 includes a lower die hydraulic cylinder 51, a lower press die 52, and a lift plate 53; the upper surface of the first bracket 1 is provided with a brick making through hole 11, the lower pressing die 52 penetrates through the brick making through hole 11, and the outer wall of the lower pressing die 52 is fixedly connected with the inner wall of the brick making through hole 11; a brick making groove 521 is formed in the center of the lower pressing die 52, and the brick making groove 521 penetrates through the lower pressing die 52; one end of the lower die hydraulic cylinder 51 is fixedly connected to the ground, a lower die hydraulic rod 511 vertically extends out of one end of the lower die hydraulic cylinder 51, which deviates from the ground, one end of the lower die hydraulic rod 511, which deviates from the lower die hydraulic cylinder 51, is fixedly connected with a lifting plate 53, the lifting plate 53 is located in the brick making groove 521, and the peripheral side walls of the lifting plate 53 are attached to the inner wall of the brick making groove 521.

Referring to fig. 1 and 2, the upper die assembly 4 includes an upper die hydraulic cylinder 41 and an upper die 42, the upper die hydraulic cylinder 41 is fixedly connected to the upper surface of the second bracket 2, an upper die hydraulic rod 411 vertically extends out of the upper die hydraulic cylinder 41, the upper die hydraulic rod 411 vertically extends downwards to pass through the second bracket 2, one end of the upper die hydraulic rod 411, which is far away from the upper die hydraulic cylinder 41, is fixedly connected with the upper surface of the upper die 42, the lower surface of the upper die 42 is opposite to the upper opening of the brick making groove 521, and the size of the upper die 42 is matched with that of the brick making groove 521; in the brick making process, the feeding box 33 gradually approaches the lower pressing die 52 in the horizontal direction under the action of the feeding pressure rod 321, and in the process that the feeding groove 331 and the brick making groove 521 gradually coincide, the aggregates in the feeding box 33 fall into the brick making groove 521, and the aggregates are accumulated on the lifting plate 53; after the brick making groove 521 is loaded, the upper die 42 moves vertically and downwardly under the action of the upper die hydraulic rod 411, the upper die 42 gradually enters the brick making groove 521 and presses aggregate in the brick making groove 521, after the aggregate is pressed into bricks, the upper die 42 moves upwardly to an initial state, at the moment, the lower die hydraulic rod 511 drives the lifting plate 53 to move vertically and upwardly to eject the bricks, and an operator takes the bricks away.

Referring to fig. 2 and 3, the cleaning assembly 6 includes a storage case 61 and a blade 62; the cleaning motor 7 is fixedly connected to the second support 2, the driving shaft 71 vertically extends out of the cleaning motor 7, the driving shaft 71 vertically extends downwards to penetrate through the second support 2, the storage box 61 is detachably connected to the side wall of the driving shaft 71, the side plate, close to the driving shaft 71, of the side surface of the storage box 61 is a first side plate 611, a fixing groove 612 is formed in the side surface, facing the driving shaft 71, of the first side plate 611, the groove surface, facing the driving shaft 71, of the fixing groove 612 is an arc-shaped surface, and the arc-shaped surface is attached to the outer; threaded holes 613 are horizontally formed in the groove wall of the fixing groove 612 and the outer wall of the hydraulic rod, the threaded holes 613 in the fixing groove 612 correspond to the threaded holes 613 in the outer wall of the hydraulic rod, and bolts 614 are connected to the threaded holes 613 in an internal thread mode; when it is necessary to mount the storage case 61, the outer wall of the drive shaft 71 is first fitted to the groove wall of the fixing groove 612, and then the operator screws the bolts 614 into the screw holes 613 on the drive shaft 71 and the screw holes 613 on the fixing groove 612 in this order to complete the assembly of the storage case 61 with the drive shaft 71.

Referring to fig. 3 and 4, the scraper 62 is disposed on one side plate adjacent to the first side plate 611 on the storage box 61, the side plate is a second side plate 615, the lower surface of the scraper 62 is fixedly attached to the upper surface of the second side plate 615, the scraper 62 is vertically disposed, the upper surface of the scraper 62 is obliquely disposed, the upper surface of the scraper 62 gradually inclines downward along a direction close to the opening of the storage box 61, and the upper surfaces of the four side plates of the storage box 61 all gradually incline downward along a direction close to the opening of the storage box 61 to facilitate the aggregates on the upper surfaces of the side plates to fall into the storage box 61; when the lower die 52 is in the initial state, the highest end of the upper surface of the scraper 62 abuts against the lower surface of the lower die 52, and at this time, an operator needs to adjust the rotation direction and the rotation speed of the cleaning motor 7 so that the aggregates fall into the storage box 61 after being scraped by the scraper 62; when the lower press die 52 needs to be moved downward, the cleaning motor 7 rotates the driving shaft 71, and the driving shaft 71 rotates the storage case 61 in the horizontal direction so that the storage case 61 and the scraper 62 avoid the movement locus of the lower press die 52 in the vertical direction.

Referring to fig. 3 and 4, the side plate directly opposite to the first side plate 611 is the third side plate 616, the lower surface of the first side plate 611 is hinged to the bottom plate 617, the hinge axis is horizontally arranged, the hinge axis runs along the direction of the first side plate 611, the upper surface of the bottom plate 617 is attached to the lower surfaces of the four side plates, and the bottom plate 617 and the four side plates together form the storage box 61; a magnet groove 618 is formed in the position, close to the bottom plate 617, of the outer side wall of the third side plate 616, the magnet groove 618 is horizontally formed, the magnet groove 618 extends to the lower surface of the third side plate 616 in the vertical direction, a strong magnet piece 619 is fixedly attached to the groove bottom, opposite to the bottom plate 617, of the magnet groove 618, the bottom plate 617 is made of magnetic metal, the bottom plate 617 and the strong magnet piece 619 are attracted to each other, and the end face, away from the hinge axis of the bottom plate 617, of the bottom plate 617 extends to the outer wall of the third side plate 616; the position, back to the first side plate 611, of the side wall of the driving shaft 71 is fixed, the carrying box is provided with a balancing weight 8, the balancing weight 8 is horizontally arranged, and the lower surface of the balancing weight 8 is higher than the hinge axis of the bottom plate 617 per se so as to reduce the influence of the balancing weight 8 on the bottom plate 617; when the aggregate in the storage box 61 has accumulated a certain weight, the operator needs to handle this part of aggregate, and at this moment, the operator applies an acting force to the bottom plate 617 to separate the bottom plate 617 from the strong magnet piece 619, and then the aggregate can be poured out of the storage box 61.

The implementation principle of a brick making device of the embodiment of the application is as follows: in the working process of brick making, the feeding assembly 3 can convey aggregate into a brick making groove 521 in the lower pressing die 52, at the moment, the upper pressing die 42 vertically enters the brick making groove 521 downwards and compacts the aggregate into bricks, then the upper pressing die 42 vertically rises upwards and returns to the original position, and the lower die hydraulic rod 511 pushes the lifting plate 53 to vertically move upwards to eject the bricks, so that the production of one brick is completed; at this time, under the driving of the cleaning motor 7, the scraper 62 cleans the lower pressing die 52, and the storage box 61 collects the aggregates cleaned by the scraper 62, and when the lower pressing die 52 needs to move downward again, the driving shaft 71 continues to rotate so that the storage box 61 and the counterweight 8 avoid the movement track of the lower pressing die 52; after the aggregate in receiver 61 has accumulated a certain weight, the bottom plate 617 can be opened by the operating personnel to take out the aggregate, and when scraper blade 62 and receiver 61 need to be changed through the use of a period of time, the operating personnel can accomplish the separation between receiver 61 and drive shaft 71 by unscrewing bolt 614 between receiver 61 and drive shaft 71.

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

1. A brick making device, which is characterized in that: the device comprises a first support (1), a second support (2) is fixedly connected to the upper side of the first support (1), and a feeding assembly (3), a lower die assembly (5), an upper die assembly (4) and a cleaning assembly (6) are arranged on the first support (1) and the second support (2) together;

the feeding assembly (3) comprises a feeding barrel (31), a feeding hydraulic cylinder (32) and a feeding box (33), the feeding barrel (31) is fixedly connected with the second support (2), a discharge hole of the feeding barrel (31) is positioned right above the feeding box (33), a feeding hydraulic rod (321) extends out of the feeding hydraulic cylinder (32), and one end, away from the feeding hydraulic cylinder (32), of the feeding hydraulic rod (321) is fixedly connected with the side wall of the feeding box (33);

the lower die assembly (5) is positioned on one side, back to the feeding hydraulic cylinder (32), of the feeding box (33), the lower die assembly (5) comprises a lower die hydraulic cylinder (51), a lower pressing die (52) and a lifting plate (53), the lower pressing die (52) is fixedly connected with the first support (1), a brick making groove (521) penetrating through the lower pressing die (52) is formed in the upper surface of the lower pressing die (52), a lower die hydraulic rod (511) extends out of one end, close to the lower pressing die (52), of the lower die hydraulic cylinder (51), one end, away from the lower die hydraulic cylinder (51), of the lower die hydraulic rod (511) is fixedly connected with the lifting plate (53), and the peripheral side walls of the lifting plate (53) are attached to the inner wall of the brick making groove (521);

the upper die assembly (4) comprises an upper die hydraulic cylinder (41) and an upper pressing die (42), the upper die hydraulic cylinder (41) is fixedly connected to the second support (2), an upper die hydraulic rod (411) extends out of the upper die hydraulic cylinder (41), one end, deviating from the upper die hydraulic cylinder (41), of the upper die hydraulic rod (411) is fixedly connected with the upper surface of the upper pressing die (42), and the lower surface of the upper pressing die (42) is right opposite to a brick making groove (521);

fixedly connected with cleaning motor (7) on second support (2), and cleaning motor (7) stretch out and have drive shaft (71), clean subassembly (6) include scraper blade (62) and upper shed's receiver (61), and receiver (61) set up in drive shaft (71) one side, and scraper blade (62) fixed connection is on receiver (61) upper surface, and when last moulding-die (42) were in the peak, scraper blade (62) deviated from the one end of receiver (61) and the lower surface looks butt of last moulding-die (42).

2. A tile making apparatus according to claim 1, wherein: the upper surface of the scraper (62) is obliquely arranged, and the highest end of the upper surface of the scraper (62) is abutted against the lower surface of the upper pressing die (42).

3. A tile making apparatus according to claim 1, wherein: the upper surface of receiver (61) is the slope setting, and the upper surface of receiver (61) along the direction of being close to receiver (61) center slope gradually downwards.

4. A tile making apparatus according to claim 1, wherein: the below of receiver (61) articulates there is bottom plate (617), this articulated axis level sets up, and this articulated axis is located one side that receiver (61) bottom surface is close to drive shaft (71), position fixedly connected with strong magnet piece (619) of drive shaft (71) is kept away from to receiver (61) bottom surface, bottom plate (617) are magnetic metal material's bottom plate (617), and bottom plate (617) upper surface is close to the position of strong magnet piece (619) and adsorbs mutually with strong magnet piece (619), when bottom plate (617) and strong magnet piece (619) are in the adsorption state, receiver (61) inner space and receiver (61) lower space are cut off by bottom plate (617), when bottom plate (617) and strong magnet piece (619) are in the disengagement state, receiver (61) inner space is linked together with receiver (61) lower space.

5. A tile making apparatus according to claim 4, wherein: the length of the bottom plate (617) in the extending direction is larger than the length of the storage box (61) in the horizontal direction.

6. A tile making apparatus according to claim 1, wherein: one side fixedly connected with balancing weight (8) that drive shaft (71) deviates from receiver (61).

7. A tile making apparatus according to claim 1, wherein: the lateral wall of drive shaft (71) is seted up screw hole (613), and receiver (61) is close to the lateral wall of drive shaft (71) and equally is seted up screw hole (613), and screw hole (613) that are located on drive shaft (71) and screw hole (613) that are located receiver (61) are just right each other, and screw hole (613) threaded connection has bolt (614) on drive shaft (71) and receiver (61).

8. A brickmaking apparatus as claimed in claim 7, wherein: a fixing groove (612) is formed in one side, close to the driving shaft (71), of the storage box (61), a threaded hole (613) in the storage box (61) is formed in the groove wall of the fixing groove (612), the groove face, facing the driving shaft (71), of the fixing groove (612) is an arc face, and the arc face is attached to the outer wall of the driving shaft (71).