Waste treatment device based on civil engineering

Abstract

The invention relates to the technical field of civil engineering treatment, in particular to a civil engineering-based waste treatment device which comprises a receiving barrel, a feeding part is connected to the upper surface of the receiving barrel in a penetrating manner, a supporting frame is fixedly connected to the lower surface of the receiving barrel, and a servo motor is fixedly connected to one side of the feeding part; an output shaft of the servo motor penetrates through the inner side of the feeding part and is fixedly connected with a crushing part, one end of the receiving barrel is rotationally connected with a screening barrel in a penetrating mode, the outer surface of one end of the screening barrel is fixedly connected with a third gear, the outer surface of the receiving barrel is fixedly connected with a double-shaft motor, and the outer surface of one end of the screening barrel is rotationally connected with a protective shell; when the screening barrel drives waste to rotate continuously, the position and angle of the waste can be changed continuously, so that large waste and powder are separated more effectively under the combined action of centrifugal force and gravity, and the purity and quality of regenerated materials are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of civil engineering treatment, and specifically to a waste treatment device based on civil engineering. Background Art

[0002] In the field of civil engineering, with the acceleration of the urbanization process and the continuous advancement of infrastructure construction, the generation amount of construction waste is increasing day by day. These wastes, such as waste concrete blocks, broken bricks and tiles, muck, and waste wood, not only occupy a large amount of land resources but also have a negative impact on the surrounding ecological environment. Therefore, being able to use a treatment device to treat the waste generated in civil engineering can not only reduce pollution but also save land resources.

[0003] When the treatment device finishes crushing the waste, the large waste and powder waste will be mixed together, resulting in a reduction in the purity of the recycled aggregate and powder, and uneven quality, thus affecting the application effect of the recycled materials in subsequent projects. Moreover, the mixed waste requires an additional screening step in the subsequent treatment process, increasing the treatment time and cost.

[0004] Therefore, the present invention proposes a waste treatment device based on civil engineering to make up for and improve the deficiencies of the existing technology. Summary of the Invention

[0005] Aiming at the defects existing in the prior art, the present invention provides a waste treatment device based on civil engineering, which can effectively solve the above technical problems.

[0006] The technical implementation scheme of the present invention is as follows: A waste treatment device based on civil engineering includes a material receiving barrel. The upper surface of the material receiving barrel is connected through a feeding member. The lower surface of the material receiving barrel is fixedly connected with a support frame. One side of the feeding member is fixedly connected with a servo motor. The output shaft of the servo motor penetrates through the inner side of the feeding member and is fixedly connected with a crushing member. It is characterized in that one end of the material receiving barrel is rotationally connected through a screening barrel. The outer surface of one end of the screening barrel is fixedly connected with a third gear. The outer surface of the material receiving barrel is fixedly connected with a double-shaft motor. The output shaft of one end of the double-shaft motor is fixedly connected with a second gear. The outer surface of the second gear is meshed and matched with the outer surface of the third gear. The outer surface of one end of the screening barrel is rotatably connected with a protective shell. One side of the protective shell is fixedly connected to one end of the material receiving barrel. When the screening barrel rotates, it can screen the crushed waste.

[0007] More preferably, the inner side of the screening barrel is in a threaded shape. By rotating the threaded shape inside the screening barrel, it can guide the waste to move along a spiral path inside the screening barrel, increasing the residence time and screening area of the material on the screening barrel.

[0008] More preferably, a rotating part is rotatably connected to the inner side of the receiving barrel, and a plurality of magnets are fixedly connected to the inner side of the rotating part in a ring shape. The magnets can absorb the steel bars inside the waste, thereby preventing the steel bars from being mixed with the crushed waste.

[0009] More preferably, the output shaft at the other end of the dual-axis motor is fixedly connected to a fixed rod, the outer surface of one end of the fixed rod is rotatably connected to a connecting rod, the outer surface of one end of the rotating member is rotatably connected to a connecting member, one end of the connecting rod is slidably connected to a pin, and the outer surface of one end of the pin is sleeved on the inside of one side of the connecting member. The output shaft at the right end of the dual-axis motor can drive the magnet to rotate reciprocatingly, thereby shaking off the waste adsorbed on the outer surface of the magnet.

[0010] More preferably, a first spring is fixedly sleeved on the outer surface of the latch, and a top end of the first spring is fixedly connected to a lower surface of the connecting rod, so that the latch can be driven to reset through the first spring.

[0011] More preferably, the outer surface of one end of the material receiving barrel is symmetrically slidably connected to a rotating frame, the inner side of the rotating frame is slidably connected to a clamping piece, the sides of the clamping pieces close to each other are sleeved on the outer surface of one side of the rotating piece, and the sides of the clamping pieces close to each other are slidably connected to a locking piece, and the rotating piece is limited by the clamping piece, thereby preventing the rotating piece from falling off from the inside of the material receiving barrel when rotating.

[0012] More preferably, a second spring is fixedly sleeved on the outer surface of the locking member, and the top end of the second spring is fixedly connected to the lower surface of the side of the clamping member close to each other, so that the locking member can be driven to reset through the second spring.

[0013] More preferably, the outer surface of the servo motor output shaft is transmission connected to the first belt, one end of the first belt is transmission connected to the fifth gear, one end of the fifth gear rotates through the outer surface of the feed piece and is fixedly connected to the first claw, one end of the first claw is fixedly connected to the inner side of the feed piece, one side of the outer surface of the feed piece is rotationally connected to the fifth gear, the outer surface of the fourth gear is meshed with the outer surface of the fifth gear, one end of the fifth gear is transmission connected to the second belt, one end of the second belt is transmission connected to the second claw, one end of the second claw is rotationally connected to the inner side of the feed piece, and the steel bars and waste embedded in the crushing piece can be taken out when the first claw and the second claw rotate.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. When the sieve barrel drives the waste materials to rotate continuously in the present invention, it can continuously change the positions and angles of the waste materials, enabling the large waste and powder to be more effectively separated under the combined action of centrifugal force and gravity, improving the purity and quality of the recycled materials. Moreover, the inner wall side of the sieve barrel is threaded, which can guide the waste materials to move along a spiral path in the sieve barrel, increasing the residence time and screening area of the materials on the sieve barrel, thereby improving the screening efficiency.

[0016] 2. In the present invention, the magnet can adsorb the steel bars inside the waste materials, realizing the effective recovery of the steel bars, improving the utilization rate of resources. And by adsorbing the steel bars with the magnet, a large amount of waste materials can be processed in a short time, improving the overall processing efficiency; when the rotating part drives the magnet to rotate reciprocally, it can automatically throw off the waste materials adsorbed on the surface of the magnet, keeping the surface of the magnet clean, so that the adsorption force on the surface of the magnet is not affected, thereby continuously and efficiently adsorbing the steel bars.

[0017] 3. When the first hook claw and the second hook claw rotate in the present invention, they can take out the steel bars and waste materials embedded inside the crushing part, preventing the steel bars from getting stuck inside the crushing part and causing the equipment to operate smoothly. And when taking out the steel bars by the first hook claw and the second hook claw, the recovery rate of the steel bars can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic three-dimensional structure diagram of the present invention.

[0019] Figure 2 It is a schematic three-dimensional structure diagram of the screening assembly of the present invention.

[0020] Figure 3 It is a schematic three-dimensional structure diagram of the blocking assembly of the present invention.

[0021] Figure 4 For the present invention Figure 3 The enlarged schematic diagram of the structure at A in

[0022] Figure 5 For the present invention Figure 3 The enlarged schematic diagram of the structure at B in

[0023] Figure 6 It is a schematic three-dimensional structure diagram of the adsorption assembly of the present invention.

[0024] Figure 7 It is a schematic three-dimensional structure diagram of the cleaning assembly of the present invention.

[0025] Figure 8 It is a schematic partial structure diagram of the cleaning assembly of the present invention.

[0026] The markings of each component in the attached drawings are as follows: 1 - material receiving cylinder, 11 - feeding component, 12 - servo motor, 13 - support frame, 14 - crushing component, 2 - double - shaft motor, 21 - sieving cylinder, 22 - protective housing, 23 - second gear, 24 - third gear, 3 - fixed rod, 31 - rotating component, 32 - connecting component, 33 - pin, 34 - first spring, 35 - connecting rod, 36 - rotating frame, 37 - clamping component, 38 - locking component, 39 - second spring, 391 - magnet, 4 - first belt, 41 - fourth gear, 42 - fifth gear, 43 - first hook, 44 - second hook, 45 - second belt. Detailed implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Next, in combination with the attached Figures 1 - 8 A specific implementation example of the present invention will be elaborated in detail.

[0029] Refer to the attached Figure 1 As shown in the figure, a waste treatment device based on civil engineering includes a material receiving cylinder 1. The upper surface of the material receiving cylinder 1 is connected through and through with a feeding component 11. The feeding component 11 is used to facilitate the entry of waste materials into the interior of the material receiving cylinder 1. The lower surface of the material receiving cylinder 1 is fixedly connected with a support frame 13. The support frame 13 is used to support the material receiving cylinder 1. The left side of the feeding component 11 is fixedly connected with a servo motor 12. The output shaft of the servo motor 12 rotates through the inner side of the feeding component 11 and is fixedly connected with a crushing component 14. The servo motor 12 is used to drive the crushing component 14 to rotate, and the crushing component 14 is used to crush waste materials.

[0030] As described in the background technology, when the waste treatment device finishes crushing the waste materials, the large - sized waste materials and the powdered waste materials will be mixed together, resulting in a decrease in the purity of the recycled aggregate and powder, and uneven quality, thus affecting the application effect of the recycled materials in subsequent projects.

[0031] Refer to the attached Figure 2, To solve the problem of the mixture of large waste materials and powder waste materials, the following technical solution is adopted in this embodiment: One end of the material receiving barrel 1 is rotatably connected to a screening barrel 21. The inner side of the screening barrel 21 is threaded. The screening barrel 21 is used for screening the crushed waste materials. The outer surface of the right end of the screening barrel 21 is fixedly connected with a third gear 24. The third gear 24 is used to drive the screening barrel 21 to rotate. The outer surface of the front side of the material receiving barrel 1 is fixedly connected with a dual-axis motor 2. The output shaft of the left end of the dual-axis motor 2 is fixedly connected with a second gear 23. The output shaft of the left end of the dual-axis motor 2 is used to drive the second gear 23 to rotate. The outer surface of the second gear 23 is meshed and matched with the outer surface of the third gear 24. The outer surface of the right end of the screening barrel 21 is rotatably connected to a protective shell 22. The right side of the protective shell 22 is fixedly connected to the left side of the material receiving barrel 1. The protective shell 22 is used to protect the second gear 23 and the third gear 24.

[0032] When the device crushes the waste materials, the servo motor 12 can drive the crushing part 14 to rotate at this time. When the waste materials are put into the feeding part 11 at this time, the crushing part 14 can crush the waste materials. As the servo motor 12 rotates, the output shaft of the left end of the dual-axis motor 2 can drive the second gear 23 to rotate simultaneously. As the second gear 23 rotates, it can drive the third gear 24 to rotate. When the third gear 24 rotates, it can drive the screening barrel 21 to rotate simultaneously at the left end of the material receiving barrel 1. When the crushing part 14 finishes crushing the waste materials, the waste materials can flow into the interior of the screening barrel 21 along the inner side of the material receiving barrel 1. At this time, the screening barrel 21 can drive the crushed waste materials to rotate, so that the screening barrel 21 can continuously change the position and angle of the waste materials, making the large waste and powder more effectively separated under the combined action of centrifugal force and gravity, and improving the purity and quality of the recycled materials.

[0033] The inner side of the screening barrel 21 is threaded. When the screening barrel 21 drives the waste materials to rotate, the inner wall of the screening barrel 21 is threaded, which can guide the waste materials to move along a spiral path inside the screening barrel 21, increasing the residence time and screening area of the materials on the screening barrel 21, thereby improving the screening efficiency.

[0034] When the crushing part 14 crushes the waste materials, the steel bars inside the waste materials will be mixed with the crushed waste materials, resulting in a decrease in the purity of the recycled materials. And the mixing of the steel bars will also cause the performance of the recycled materials to be unstable, thus affecting the quality of the recycled materials.

[0035] Refer to the appendix Figures 3 - 6, to solve the problem of mixing between the steel bars and the crushed waste materials, the following technical solution is adopted in this embodiment: A rotating member 31 is rotatably connected to the inner side of the right end of the receiving cylinder 1. A plurality of magnets 391 are fixedly connected in a ring shape to the inner side of the left end of the rotating member 31. The rotating member 31 is used to drive the magnets 391 to rotate, and the magnets 391 are used to adsorb the steel bars in the waste materials.

[0036] After the crushing member 14 crushes the waste materials, at this time, the waste materials can be conveyed to the upper surface of the magnets 391. At this time, the magnets 391 can adsorb the steel bars inside the waste materials, realizing the effective recovery of the steel bars and improving the utilization rate of resources.

[0037] When the magnets 391 receive the waste materials for a long time, the waste materials are likely to accumulate on the surface of the magnets 391, thus covering the adsorption surface of the magnets 391, resulting in a decrease in the adsorption force of the magnets 391 on the steel bars and affecting the adsorption effect.

[0038] To solve the problem of the waste materials covering the surface of the magnets 391, the following technical solution is adopted in this embodiment: The output shaft of the right end of the double-shaft motor 2 is fixedly connected with a fixed rod 3. The output of the right end of the double-shaft motor 2 is used to drive the fixed rod 3 to rotate. The right end of the fixed rod 3 is rotatably connected with a connecting rod 35. The fixed rod 3 is used to drive the connecting rod 35 to swing back and forth. The outer surface of the front end of the rotating member 31 is rotatably connected with a connecting member 32. The connecting member 32 is used to drive the rotating member 31 to rotate back and forth. The rear end of the connecting rod 35 is slidably connected with a pin 33. The outer surface of the rear end of the pin 33 is sleeved on the front side of the connecting member 32. The pin 33 is used to connect the rear end of the connecting rod 35 with the front end of the connecting member 32. The connecting rod 35 drives the connecting member 32 to swing simultaneously through the pin 33. The outer surface of the bottom of the pin 33 is fixedly sleeved with a first spring 34. The top end of the first spring 34 is fixedly connected to the lower surface of the connecting rod 35. The first spring 34 is used to drive the pin 33 to move back to its original position.

[0039] When the crushing member 14 crushes the waste materials, at this time, the output shaft of the right end of the double-shaft motor 2 can drive the fixed rod 3 to rotate simultaneously. When the fixed rod 3 rotates, it can drive the connecting rod 35 to swing back and forth. The connecting rod 35 can drive the connecting member 32 to swing simultaneously through the pin 33. When the connecting member 32 swings, it can drive the rotating member 31 to rotate back and forth. When the rotating member 31 rotates back and forth in the receiving cylinder 1, it can drive the magnets 391 to rotate simultaneously, so that when the magnets 391 rotate, they can throw off the non-metallic waste materials, keep the surface of the magnets 391 clean, and ensure that the adsorption force on the surface of the magnets 391 is not affected, so as to continuously and efficiently adsorb the steel bars.

[0040] When the staff does not need to make the rotating member 31 reciprocate, the bolt 33 can be pulled upward at this time. When the bolt 33 moves upward inside the connecting rod 35, the first spring 34 can be moved to the compressed state. And when the bolt 33 moves upward, the outer surface at the rear side of the bolt 33 can be disengaged from the socket at the front end of the connecting member 32, so that the connecting rod 35 cannot drive the connecting member 32 to swing reciprocally, and the first spring 34 in the compressed state can drive the bolt 33 to move for reset.

[0041] The outer surfaces at the right end of the material receiving cylinder 1 are symmetrically and slidably connected with rotating frames 36. Between the inner sides of the rotating frames 36, there is a sliding connection with clamping members 37. The clamping members 37 are used to drive the rotating frames 36 to slide simultaneously. Between the inner sides of the clamping members 37, there is a sliding connection with the outer surface at the right end of the rotating member 31. The clamping members 37 are used to limit the rotating member 31. On the mutually approaching sides of the clamping members 37, there is a sliding connection with locking members 38. Between the mutually remote sides of the locking members 38, it is used to block the right end of the rotating member 31. The outer surfaces of the locking members 38 are fixedly sleeved with second springs 39. Between the tops of the second springs 39, there is a fixed connection with the inner sides of the clamping members 37. The second springs 39 are used to drive the locking members 38 to move for reset.

[0042] When the rotating member 31 reciprocates, the rotating member 31 can drive the clamping members 37 to rotate simultaneously. When the clamping members 37 rotate, they can block the right end of the rotating member 31 to prevent the rotating member 31 from falling off from the inside of the material receiving cylinder 1.

[0043] When the staff needs to take out the rotating member 31 from the inside of the material receiving cylinder 1, the locking member 38 can be lifted upward. When the second spring 39 moves upward, the clamping members 37 can be slid to the mutually remote sides, so that the mutually approaching sides of the clamping members 37 can be disengaged from restricting the rotating member 31. And when the second spring 39 moves upward, the second spring 39 can be moved to the compressed state. When the clamping members 37 move to both sides, the second spring 39 can drive the locking member 38 to move for reset, so that the locking member 38 can block between the inner sides of the clamping members 37, thereby preventing the right end of the rotating member 31 from sliding into the inside of the clamping members 37.

[0044] Before the staff pulls out the rotating member 31, the rotating member 31 can be rotated 180 degrees preferentially. When the rotating member 31 rotates, the magnet 391 can be driven to rotate simultaneously, so that the non-metallic waste can be separated from the outer surface of the magnet 391 by its own weight. Thus, when the rotating member 31 is taken out from the inside of the material receiving cylinder 1, the non-metallic waste can be prevented from being taken out.

[0045] When the steel bars on the outer surface of the magnet 391 are cleaned, the rotating part 31 can be reinserted into the inner side of the receiving barrel 1. At this time, the locking part 38 needs to be pulled upward again. As the locking part 38 moves upward, the second spring 39 can be squeezed to a compressed state. When the locking part 38 moves upward, the clamping part 37 can slide to the side close to each other, so that the inner side of the clamping part 37 can restrict the right side of the rotating part 31 again. At this time, the second spring 39 in a compressed state can drive the locking part 38 to move downward, so that the locking part 38 can restrict the inner side of the clamping part 37 again.

[0046] As the crushing member 14 crushes the waste, the waste and the steel bars are easily stuck inside the crushing member 14, thereby preventing the crushing member 14 from rotating normally and causing a significant reduction in the crushing efficiency.

[0047] Reference Figures 7 - 8 In order to solve the problem of material jamming of the crushing piece 14, the present embodiment adopts the following technical solution: the outer surface of the output shaft of the servo motor 12 is transmission-connected with the first belt 4, the front end of the first belt 4 is transmission-connected with the fourth gear 41, the output shaft of the servo motor 12 is used to drive the fourth gear 41 to rotate simultaneously through the first belt 4, the right end of the fourth gear 41 rotates and passes through the inner side of the feeding piece 11 and is fixedly connected with the first claw 43, the fourth gear 41 is used to drive the first claw 43 to rotate simultaneously, and the first claw 43 is used to clean the gap on the front side of the crushing piece 14.

[0048] The left side of the outer surface of the feeding piece 11 is rotatably connected to the fifth gear 42, the outer surface of the fourth gear 41 is meshed with the outer surface of the fifth gear 42, the fourth gear 41 is used to drive the fifth gear 42 to rotate simultaneously, the outer surface of the left end of the fifth gear 42 is transmission connected to the second belt 45, the rear end of the second belt 45 is transmission connected to the second claw 44, the right end of the second claw 44 is rotatably connected to the inner side of the feeding piece 11, the fifth gear 42 is used to drive the second claw 44 to rotate simultaneously through the second belt 45, and the second claw 44 is used to clean the gap on the front side of the crushing piece 14.

[0049] When the output shaft of the servo motor 12 rotates, it can drive the fourth gear 41 to rotate simultaneously through the first belt 4. When the fourth gear 41 rotates, it can drive the first hook 43 to rotate simultaneously. As the first hook 43 rotates, the first hook 43 can clean the gap on the front side of the crushing member 14. And when the fourth gear 41 rotates, it can drive the fifth gear 42 to rotate in the opposite direction. When the fifth gear 42 rotates in the opposite direction, it can drive the second hook 44 to rotate in reverse simultaneously through the second belt 45. When the second hook 44 rotates in reverse, it can clean the gap on the rear side of the crushing member 14. Thus, by the rotation of the first hook 43 and the second hook 44, the steel bars and waste materials embedded in the crushing member 14 can be taken out, avoiding the steel bars getting stuck inside the crushing member 14 and causing the equipment to run smoothly. And when the steel bars are taken out by the first hook 43 and the second hook 44, the recovery rate of the steel bars can be improved.

[0050] Although the present disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art should understand that various changes in form and detail may be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above embodiments, but should be determined not only by the appended claims but also by the equivalents of the appended claims.

Claims

1. A waste treatment device based on civil engineering, comprising a receiving barrel (1), the upper surface of the receiving barrel (1) is connected to a feeding piece (11), the lower surface of the receiving barrel (1) is fixedly connected to a support frame (13), one side of the feeding piece (11) is fixedly connected to a servo motor (12), the output shaft of the servo motor (12) passes through the inner side of the feeding piece (11) and is fixedly connected to a crushing piece (14), characterized in that: One end of the material receiving barrel (1) is rotatably connected to a screening barrel (21), the outer surface of one end of the screening barrel (21) is fixedly connected to a third gear (24), the outer surface of the material receiving barrel (1) is fixedly connected to a double-axis motor (2), the output shaft of one end of the double-axis motor (2) is fixedly connected to a second gear (23), the outer surface of the second gear (23) is meshed with the outer surface of the third gear (24), the outer surface of one end of the screening barrel (21) is rotatably connected to a protective shell (22), and one side of the protective shell (22) is fixedly connected to one end of the material receiving barrel (1).

2. A waste treatment device based on civil engineering according to claim 1, characterized in that: The inner side of the screening barrel (21) is threaded.

3. A waste treatment device based on civil engineering according to claim 2, characterized in that: The inner side of the receiving barrel (1) is rotatably connected to a rotating member (31), and the inner side of the rotating member (31) is fixedly connected to a plurality of magnets (391) in a ring shape.

4. A waste treatment device based on civil engineering according to claim 1, characterized in that: The output shaft at the other end of the dual-axis motor (2) is fixedly connected to a fixed rod (3); the outer surface of one end of the fixed rod (3) is rotatably connected to a connecting rod (35); the outer surface of one end of the rotating member (31) is rotatably connected to a connecting member (32); one end of the connecting rod (35) is slidably connected to a latch (33); the outer surface of one end of the latch (33) is sleeved on the inside of one side of the connecting member (32).

5. A waste treatment device based on civil engineering according to claim 4, characterized in that: A first spring (34) is fixedly sleeved on the outer surface of the latch pin (33), and the top end of the first spring (34) is fixedly connected to the lower surface of the connecting rod (35).

6. A waste treatment device based on civil engineering according to claim 5, characterized in that: The outer surface of one end of the receiving barrel (1) is symmetrically slidably connected to a rotating frame (36), and the inner side of the rotating frame (36) is slidably connected to a clamping piece (37). The sides of the clamping pieces (37) that are close to each other are sleeved on the outer surface of one side of the rotating piece (31), and the sides of the clamping pieces (37) that are close to each other are slidably connected to a locking piece (38).

7. A waste treatment device based on civil engineering according to claim 6, characterized in that: A second spring (39) is fixedly sleeved on the outer surface of the locking member (38), and the top end of the second spring (39) is fixedly connected to the lower surface of the clamping member (37) on the side close to each other.

8. The waste treatment device based on civil engineering according to claim 1, characterized in that: The outer surface of the output shaft of the servo motor (12) is transmission-connected with a first belt (4), one end of the first belt (4) is transmission-connected with a fifth gear (42), one end of the fifth gear (42) rotates through the outer surface of the feed piece (11) and is fixedly connected with a first hook (43), one end of the first hook (43) is fixedly connected to the inner side of the feed piece (11), one side of the outer surface of the feed piece (11) is rotationally connected with the fifth gear (42), the outer surface of the fourth gear (41) is meshed with the outer surface of the fifth gear (42), one end of the fifth gear (42) is transmission-connected with a second belt (45), one end of the second belt (45) is transmission-connected with a second hook (44), one end of the second hook (44) is rotationally connected to the inner side of the feed piece (11).

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