阅读说明：本技术 一种基于造纸原材料预处理的削片机 (Chipping machine based on papermaking raw material pretreatment ) 是由 俞李那 于 2019-11-08 设计创作，主要内容包括：本发明涉及工业造纸领域,尤其是一种基于造纸原材料预处理的削片机,所述的一种基于造纸原材料预处理的削片机,包括机体,所述机体内部设有第二运动腔,所述第二运动腔上端壁上设有弹簧腔,两者贯通,本发明提供的一种基于造纸原材料预处理的削片机,能够实现自动对木材进行削片,并且将木片进一步粉碎,方便造纸过程中的机械磨浆,同时考虑到木材整体运送过程中,由于木材堆叠时,会存在间隙,会导致其运送的木材量不足以填满整个储存空间,造成空间浪费,所以有必要制造方便移动的削片机,便于在木材产出地直接将木材进行处理,处理后的木材可以更好的利用存储空间,提高一次运送木材的数量,提高运送率,节约运输成本。(The invention relates to the field of industrial papermaking, in particular to a chipper based on papermaking raw material pretreatment, which comprises a machine body, wherein a second motion cavity is arranged in the machine body, and a spring cavity is arranged on the upper end wall of the second motion cavity and is communicated with the second motion cavity. The quantity of timber of once transporting is improved, improves the rate of transporting, practices thrift the cost of transportation.)

1. The utility model provides a chipping machine based on papermaking raw and other materials preliminary treatment which includes the organism, its characterized in that: a second movement cavity is arranged in the machine body, a spring cavity is arranged on the upper end wall of the second movement cavity and is communicated with the second movement cavity, a lifting rod is arranged in the second movement cavity, the top end of the lifting rod is positioned in the spring cavity, a spring is arranged in the spring cavity, the lifting rod is elastically connected with the spring, a lifting plate is fixedly arranged at the lower end of the lifting rod, first shafts extending forwards are symmetrically and rotatably arranged at the left end and the right end of the lifting plate, a pressing roller is fixedly arranged at the front end of each first shaft, pressing ribs are fixedly arranged on the pressing roller, a first belt pulley is arranged behind the pressing roller on the first shaft on the left side, the first belt pulley is fixedly connected with the first shafts, a first belt is slidably arranged on the first belt pulley, a second belt pulley is arranged on the right side of the first belt pulley, and the second belt pulley is in transmission connection with the first belt pulley through the first belt, the second belt pulley is located the right side on the primary shaft, both fixed connection, second belt pulley the place ahead is equipped with the third belt pulley, the third belt pulley with primary shaft fixed connection, third belt pulley top slides and is equipped with the second belt, the second belt is special construction, can stretch out and draw back and do not influence its transmission, second belt right-hand member slides and is equipped with the fourth belt pulley, fourth belt pulley central point puts the fixed secondary shaft that is equipped with, the secondary shaft rear is equipped with the fifth belt pulley, the fifth belt pulley with fourth belt pulley fixed connection, fourth belt pulley rear end power connection is equipped with first motor, first motor fixed set up in on the organism, it is equipped with the third belt to slide on the fifth belt pulley.

2. A chipper based on pretreatment of paper stock as claimed in claim 1, wherein: fifth belt pulley below is equipped with the third motion chamber, third motion intracavity portion below is equipped with the sixth belt pulley, sixth belt pulley central point puts and is equipped with the third axle that extends forward, the sixth belt pulley with the fifth belt pulley passes through the third belt is connected, the fixed seventh belt pulley that is equipped with on the third axle, the slip is equipped with the fourth belt on the seventh belt pulley.

3. A chipper based on pretreatment of paper stock as claimed in claim 1, wherein: seventh belt pulley left end is equipped with the fourth shaft that extends backward, be equipped with fixedly in the fourth shaft the seventh belt pulley, fixedly in the fourth shaft establish the seventh belt pulley with third epaxial fixedly establishing the seventh belt pulley passes through the fourth belt is connected, the fourth shaft rear end is equipped with the fourth motion chamber, fourth motion intracavity portion is equipped with the eighth belt pulley, the eighth belt pulley with fourth shaft fixed connection, it is equipped with the fifth belt to slide on the eighth belt pulley.

4. A chipper based on pretreatment of paper stock as claimed in claim 3, wherein: a ninth belt pulley is arranged below the eighth belt pulley, the ninth belt pulley is connected with the sixth belt through the fifth belt, a fifth shaft is fixedly arranged at the center of the ninth belt pulley, and a seventh belt is fixedly arranged on the fifth shaft.

5. A chipper based on pretreatment of paper stock as claimed in claim 4, wherein: the fifth shaft left side is equipped with the sixth axle, the sixth axle with the fifth axle passes through the seventh belt is connected, the sixth axle extends backward, the sixth axle rear is equipped with the fifth motion chamber, the inside tenth belt pulley that is equipped with of fifth motion chamber, the tenth belt pulley with sixth axle fixed connection, it is equipped with the sixth belt to slide on the tenth belt pulley, tenth belt pulley below is equipped with the eleventh belt pulley, eleventh belt pulley central point puts and sets firmly the seventh axle that extends forward, the eleventh belt pulley with the tenth belt pulley passes through the sixth belt is connected.

6. A chipper based on pretreatment of paper stock as claimed in claim 5, wherein: the front end of the seventh shaft is provided with a working cavity which is communicated with the fifth movement cavity, a first helical gear is arranged inside the working cavity and fixedly connected with the seventh shaft, a second helical gear is meshed with the front of the seventh shaft, an eighth shaft extending leftwards is fixedly arranged at the center of the second helical gear, a crushing roller is fixedly arranged on the eighth shaft, a crushing cavity is arranged around the crushing roller, and a discharging cavity is arranged below the crushing cavity.

7. A chipper based on pretreatment of paper stock as claimed in claim 6, wherein: the left side of the second motion cavity is provided with a sixth motion cavity, the sixth motion cavity is communicated with the sixth motion cavity, a cutting rotary drum is arranged in the sixth motion cavity, a ninth shaft extending backwards is fixedly arranged at the center of the cutting rotary drum, a cutting blade is fixedly arranged on the cutting rotary drum, the rear end of the ninth shaft is connected with a first motor in a power mode, and the first motor is fixedly arranged on the rear end wall of the sixth motion cavity.

8. A chipper based on pretreatment of paper stock as claimed in claim 1, wherein: the machine body lower extreme is equipped with rotates the chamber, it is equipped with the power shaft that extends to the right to rotate intracavity portion, power shaft right-hand member power connection is equipped with the second motor, the power shaft left end is equipped with third helical gear and fourth helical gear admittedly, the fourth helical gear is located the third helical gear the left side, the meshing of third helical gear rear is equipped with the fifth helical gear, fifth helical gear central point puts and sets firmly the tenth axle that extends backward.

9. A chipper based on pre-treatment of paper stock as claimed in claim 8, wherein: a driving wheel is arranged behind the tenth shaft, a track is meshed with the driving wheel, a sixth helical gear is meshed with the front of the fourth helical gear, the tenth shaft is fixedly arranged at the center of the sixth helical gear, and the structure arranged in front of the eleventh shaft is consistent with the structure arranged behind the tenth shaft.

Technical Field

The invention relates to the field of industrial papermaking, in particular to a chipper based on pretreatment of papermaking raw materials.

Background

Now, with the social development, automation is pursued in industry, and higher efficiency is pursued, in traditional industrial paper-making work, wood chipping and pulp grinding processes in the paper-making raw material pretreatment process are mostly carried out in a paper-making factory, and in the whole wood conveying process, because gaps exist when the wood is stacked, the conveyed wood amount is not enough to fill the whole storage space, and space waste is caused.

Disclosure of Invention

The invention aims to provide a chipper based on papermaking raw material pretreatment, which can overcome the defects in the prior art, so that the practicability of equipment is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a chipper based on papermaking raw material pretreatment, which comprises a machine body, wherein a second moving cavity is arranged in the machine body, a spring cavity is arranged on the upper end wall of the second moving cavity and is communicated with the second moving cavity, a telescopic rod is arranged in the second moving cavity, the top end of the telescopic rod is positioned in the spring cavity, a spring is arranged in the spring cavity, the telescopic rod is elastically connected with the spring, a lifting plate is fixedly arranged at the lower end of the telescopic rod, a first shaft extending forwards is symmetrically and rotatably arranged at the left end and the right end of the lifting plate, a pressing roller is fixedly arranged at the front end of the first shaft, a pressing rib is fixedly arranged on the pressing roller, a first belt pulley is arranged behind the pressing roller on the first shaft on the left side, the first belt pulley is fixedly connected with the first shaft, a first belt is slidably arranged on the first belt pulley, a second belt pulley is arranged on the right side of the first belt pulley, the second belt pulley is in transmission connection with the first belt pulley through the first belt, the second belt pulley is positioned on the first shaft at the right side and is fixedly connected with the first shaft, a third belt pulley is arranged in front of the second belt pulley and fixedly connected with the first shaft, a second belt is arranged above the third belt pulley in a sliding way, the second belt is of a special structure, can be extended and contracted without influencing the transmission of the belt, a fourth belt pulley is arranged at the right end of the second belt pulley in a sliding way, a second shaft is fixedly arranged at the center position of the fourth belt pulley, a fifth belt pulley is arranged behind the second shaft and fixedly connected with the fourth belt pulley, fourth belt pulley rear end power connection is equipped with first motor, first motor fixed set up in on the organism, the slip is equipped with the third belt on the fifth belt pulley.

Further, fifth belt pulley below is equipped with the third motion chamber, the inside below of third motion chamber is equipped with the sixth belt pulley, sixth belt pulley central point puts and is equipped with the third axle that extends forward, the sixth belt pulley with the fifth belt pulley passes through the third belt is connected, the fixed seventh belt pulley that is equipped with on the third axle, the slip is equipped with the fourth belt on the seventh belt pulley.

Further, seventh belt pulley left end is equipped with the fourth axle that extends backward, be equipped with fixedly on the fourth axle the seventh belt pulley, fixedly on the fourth axle establish the seventh belt pulley with fixedly on the third axle establishing the seventh belt pulley passes through the fourth belt is connected, the fourth axle rear end is equipped with the fourth motion chamber, fourth motion intracavity portion is equipped with the eighth belt pulley, the eighth belt pulley with fourth axle fixed connection, it is equipped with the fifth belt to slide on the eighth belt pulley.

Furthermore, a ninth belt pulley is arranged below the eighth belt pulley, the ninth belt pulley is connected with the sixth belt through the fifth belt, a fifth shaft is fixedly arranged at the center of the ninth belt pulley, and a seventh belt is fixedly arranged on the fifth shaft.

Further, a fifth shaft left side is provided with a sixth shaft, the sixth shaft is connected with the fifth shaft through a seventh belt, the sixth shaft extends backwards, a fifth movement cavity is arranged behind the sixth shaft, a tenth belt pulley is arranged inside the fifth movement cavity, the tenth belt pulley is fixedly connected with the sixth shaft, a sixth belt is arranged on the tenth belt pulley in a sliding manner, an eleventh belt pulley is arranged below the tenth belt pulley, a seventh shaft extending forwards is fixedly arranged at the center position of the eleventh belt pulley, and the eleventh belt pulley is connected with the tenth belt pulley through the sixth belt.

Furthermore, a working cavity is arranged at the front end of the seventh shaft, the working cavity is communicated with the fifth movement cavity, a first helical gear is arranged inside the working cavity, the first helical gear is fixedly connected with the seventh shaft, a second helical gear is meshed with the front of the seventh shaft, an eighth shaft extending leftwards is fixedly arranged at the center of the second helical gear, a crushing roller is fixedly arranged on the eighth shaft, a crushing cavity is arranged around the crushing roller, and a discharging cavity is arranged below the crushing cavity.

Furthermore, a sixth movement cavity is arranged on the left side of the second movement cavity and communicated with the second movement cavity, a cutting rotary drum is arranged in the sixth movement cavity, a ninth shaft extending backwards is fixedly arranged at the center of the cutting rotary drum, a cutting blade is fixedly arranged on the cutting rotary drum, a first motor is arranged at the rear end of the ninth shaft in a power connection mode, and the first motor is fixedly arranged on the rear end wall of the sixth movement cavity.

Further, a rotating cavity is arranged at the lower end of the machine body, a power shaft extending to the right is arranged inside the rotating cavity, a second motor is arranged at the right end of the power shaft in a power connection mode, a third bevel gear and a fourth bevel gear are fixedly arranged at the left end of the power shaft, the fourth bevel gear is located on the left side of the third bevel gear, a fifth bevel gear is meshed with the rear portion of the third bevel gear, and a tenth shaft extending backwards is fixedly arranged at the center of the fifth bevel gear.

Furthermore, a driving wheel is arranged behind the tenth shaft, a crawler belt is meshed with the driving wheel, a sixth helical gear is meshed with the front of the fourth helical gear, the tenth shaft is fixedly arranged at the center of the sixth helical gear, and the structure arranged in front of the eleventh shaft is consistent with the structure arranged behind the tenth shaft.

The chipper based on papermaking raw material pretreatment has the beneficial effects that the chipper can automatically move, wood can be directly treated conveniently in a wood output place, the treated wood can better utilize the storage space, the total amount of the wood conveyed at one time is increased, the conveying rate is increased, the conveying cost is saved, and meanwhile, the chipper can further crush the wood chips, so that the subsequent pulping process is facilitated.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention will be further illustrated with reference to the accompanying figures 1-10 and examples.

Fig. 1 is a schematic diagram of the overall structure of a chipper based on pretreatment of paper-making raw materials.

Fig. 2 is an enlarged schematic view of a in fig. 1.

Fig. 3 is a schematic diagram of the structure B-B in fig. 2.

Fig. 4 is a schematic diagram of the structure C-C in fig. 2.

Fig. 5 is an enlarged schematic view of the structure of D in fig. 1.

FIG. 6 is a schematic diagram of the structure of E-E in FIG. 1.

Fig. 7 is a schematic view of the structure of F-F in fig. 1.

Fig. 8 is a schematic diagram of the structure of G-G in fig. 5.

Fig. 9 is a schematic diagram of the structure of H-H in fig. 1.

FIG. 10 is a schematic diagram of the structure of I-I in FIG. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-10, wherein for ease of description the orientations described below are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The chipper based on papermaking raw material pretreatment described with reference to fig. 1-10 comprises a body 10, a second moving cavity 43 is provided inside the body 10, a spring cavity 13 is provided on the upper end wall of the second moving cavity 43, the second moving cavity 43 and the spring cavity 13 are communicated, a telescopic rod 11 is provided inside the second moving cavity 43, the top end of the telescopic rod 11 is located in the spring cavity 13, a spring 12 is provided inside the spring cavity 13, the telescopic rod 11 is elastically connected with the spring 12, a lifting plate 42 is fixedly provided at the lower end of the telescopic rod 11, a first shaft 16 extending forwards is symmetrically and rotatably provided at the left and right ends of the lifting plate 42, a pressing roller 14 is fixedly provided at the front end of the first shaft 16, a pressing rib 15 is fixedly provided on the pressing roller 14, a first belt pulley 44 is provided at the rear of the pressing roller 14 on the first shaft 16 on the left side, the first belt pulley 44 is fixedly connected with the first shaft 16, first belt pulley 44 is gone up to slide and is equipped with first belt 45, first belt pulley 44 right side is equipped with second belt pulley 46, second belt pulley 46 with first belt pulley 44 passes through first belt 45 transmission is connected, second belt pulley 46 is located the right side on the primary shaft 16, both fixed connection, second belt pulley 46 the place ahead is equipped with third belt pulley 47, third belt pulley 47 with primary shaft 16 fixed connection, third belt pulley 47 top slides and is equipped with second belt 17, second belt 17 is special construction, can stretch out and draw back and do not influence its transmission, second belt 17 right-hand member slides and is equipped with fourth belt pulley 18, fourth belt pulley 18 central point puts the fixed second shaft 19 that is equipped with, second shaft 19 rear is equipped with fifth belt pulley 48, fifth belt pulley 48 with fourth belt pulley 18 fixed connection, fourth belt pulley 18 rear end power connection is equipped with first motor 49, first motor 49 fixed set up in on the organism 10, it is equipped with third belt 50 to slide on the fifth belt pulley 48.

Advantageously, a third moving cavity 51 is arranged below the fifth belt pulley 48, a sixth belt pulley 52 is arranged below the third moving cavity 51, a third shaft 23 extending forwards is arranged at the center of the sixth belt pulley 52, the sixth belt pulley 52 is connected with the fifth belt pulley 48 through the third belt 50, a seventh belt pulley 22 is fixedly arranged on the third shaft 23, and a fourth belt 21 is slidably arranged on the seventh belt pulley 22.

Beneficially, a fourth shaft 26 extending backward is disposed at a left end of the seventh belt pulley 22, the seventh belt pulley 22 is fixedly disposed on the fourth shaft 26, the seventh belt pulley 22 fixedly disposed on the fourth shaft 26 is connected to the seventh belt pulley 22 fixedly disposed on the third shaft 23 through the fourth belt 21, a fourth moving cavity 53 is disposed at a rear end of the fourth shaft 26, an eighth belt pulley 56 is disposed inside the fourth moving cavity 53, the eighth belt pulley 56 is fixedly connected to the fourth shaft 26, and a fifth belt 54 is slidably disposed on the eighth belt pulley 56.

Advantageously, a ninth belt pulley 57 is arranged below the eighth belt pulley 56, the ninth belt pulley 57 is connected with the sixth belt 55 through the fifth belt 54, a fifth shaft 27 is fixedly arranged at the center of the ninth belt pulley 57, and a seventh belt 37 is fixedly arranged on the fifth shaft 27.

Advantageously, a sixth shaft 36 is provided on the left side of the fifth shaft 27, the sixth shaft 36 is connected with the fifth shaft 27 through the seventh belt 37, the sixth shaft 36 extends backward, a fifth moving cavity 58 is provided behind the sixth shaft 36, a tenth belt pulley 59 is provided inside the fifth moving cavity 58, the tenth belt pulley 59 is fixedly connected with the sixth shaft 36, a sixth belt 55 is slidably provided on the tenth belt pulley 59, an eleventh belt pulley 60 is provided below the tenth belt pulley 59, the seventh shaft 35 extending forward is fixedly arranged at the center position of the eleventh belt pulley 60, and the eleventh belt pulley 60 is connected with the tenth belt pulley 59 through the sixth belt 55.

Beneficially, a working chamber 61 is provided at the front end of the seventh shaft 35, the working chamber 61 is communicated with the fifth movement chamber 58, a first helical gear 28 is provided inside the working chamber 61, the first helical gear 28 is fixedly connected with the seventh shaft 35, a second helical gear 30 is engaged with the front of the seventh shaft 35, an eighth shaft 32 extending leftwards is fixedly provided at the center of the second helical gear 30, a crushing roller 33 is fixedly provided on the eighth shaft 32, a crushing chamber 34 is provided around the crushing roller 33, and a discharging chamber 31 is provided below the crushing chamber 34.

Advantageously, a sixth moving chamber 39 is provided at the left side of the second moving chamber 43, and both are communicated, a cutting drum 41 is provided in the sixth moving chamber 39, a ninth shaft 38 extending backwards is fixedly provided at the center position of the cutting drum 41, a cutting blade 40 is fixedly provided on the cutting drum 41, a first motor 72 is provided at the rear end of the ninth shaft 38 in a power connection manner, and the first motor 72 is fixedly provided at the rear end wall of the sixth moving chamber 39.

Beneficially, the lower end of the machine body 10 is provided with a rotating cavity 62, a power shaft 69 extending to the right is arranged inside the rotating cavity 62, a second motor 70 is arranged at the right end of the power shaft 69 in a power connection manner, a third helical gear 68 and a fourth helical gear 64 are fixedly arranged at the left end of the power shaft 69, the fourth helical gear 64 is positioned at the left side of the third helical gear 68, a fifth helical gear 65 is engaged behind the third helical gear 68, and a tenth shaft 67 extending backwards is fixedly arranged at the center position of the fifth helical gear 65.

Advantageously, a driving wheel 66 is arranged behind the tenth shaft 67, the caterpillar track 24 is engaged with the driving wheel 66, a sixth helical gear 63 is engaged with the front of the fourth helical gear 64, an eleventh shaft 71 is fixedly arranged at the center position of the sixth helical gear 63, and the structure arranged in front of the eleventh shaft 71 is identical to the structure arranged behind the tenth shaft 67.

The fixing and connecting method in this embodiment includes, but is not limited to, bolting, welding, and the like.

Sequence of mechanical actions of the whole device:

1. when the invention is in a static state, the lifting plate 42 is positioned at the lowest part, when the invention starts to work, the second motor 70 is started, the second motor 70 drives the power shaft 69 to rotate, the power shaft 69 rotates to drive the third bevel gear 68 and the fourth bevel gear 64 to rotate, the third bevel gear 68 and the fourth bevel gear 64 rotate to drive the fifth bevel gear 65 and the sixth bevel gear 63 to rotate, the fifth bevel gear 65 rotates to drive the tenth shaft 67 to rotate, the sixth bevel gear 63 rotates to drive the tenth shaft 71 to rotate, the tenth shaft 67 rotates to drive the driving wheel 66 to rotate, the driving wheel 66 rotates to drive the crawler 24 to move, and the crawler 24 moves to drive the machine to move, so that the moving function of the machine is realized;

2. when the machine reaches a proper position, the movement of the machine is stopped, the first motor 49 and the first motor 72 are started, the first motor 49 drives the fourth belt pulley 18 to rotate, the fourth belt pulley 18 rotates to drive the fifth belt pulley 48 and the second shaft 19 to rotate, the second shaft 19 rotates to drive the second belt 17 to rotate, the fifth belt pulley 48 rotates to drive the third belt 50 to rotate, the second shaft 19 rotates to drive the third belt pulley 47 to rotate, the third belt pulley 47 rotates to drive the first shaft 16 to rotate, the first shaft 16 rotates to drive the second belt pulley 46 and the pressing roller 14 to rotate, the pressing roller 14 rotates to drive the pressing rib 15 to move, the second belt pulley 46 rotates to drive the first belt 45 to move, the first belt 45 moves to drive the first belt pulley 44 to rotate, the first belt pulley 44 rotates to drive the left first shaft 16 to rotate, the left first shaft 16 rotates to drive the pressing roller 14 on the left first shaft 16 to move, the stable compaction transportation function of the wood can be realized due to the action of the compaction ribs 15;

3. the first motor 72 drives the ninth shaft 38 to rotate, the ninth shaft 38 drives the cutting drum 41 to rotate, and the cutting drum 41 drives the cutting blade 40 to rotate, so that the wood chipping function is realized;

4. the third belt 50 moves to drive the sixth belt pulley 52 to rotate, the sixth belt pulley 52 rotates to drive the third shaft 23 to rotate, the third shaft 23 rotates to drive the seventh belt pulley 22 to rotate, the seventh belt pulley 22 rotates to drive the fourth belt 21 to move, the fourth belt 21 moves to realize the wood conveying function, the fourth belt 21 moves to drive the seventh belt pulley 22 on the fourth shaft 26 to move, the seventh belt pulley 22 on the fourth shaft 26 moves to drive the fourth shaft 26 to move, and the fourth shaft 26 moves to drive the eighth belt pulley 56 to move;

5. the eighth belt pulley 56 moves to drive the fifth belt 54 to move, the fifth belt 54 moves to drive the ninth belt pulley 57 to move, the ninth belt pulley 57 moves to drive the fifth shaft 27 to move, the fifth shaft 27 moves to drive the seventh belt 37 to move, the seventh belt 37 moves to drive the sixth shaft 36 to move, and the sixth shaft 36 moves to drive the tenth belt pulley 59 to move;

6. the tenth belt pulley 59 moves to drive the sixth belt 55 to move, the sixth belt 55 moves to drive the eleventh belt pulley 60 to move, the eleventh belt pulley 60 moves to drive the seventh shaft 35 to move, the seventh shaft 35 moves to drive the first helical gear 28 to move, the first helical gear 28 moves to drive the second helical gear 30 to move, the second helical gear 30 moves to drive the eighth shaft 32 to move, and the eighth shaft 32 moves to drive the crushing roller 33 to move, so that the crushing function of the wood chips is realized, and the mechanical pulping process of the wood chips in the papermaking process is facilitated.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.