Waste recovery device of PVC (polyvinyl chloride) film calender

Abstract

The invention relates to the technical field of crushers, and discloses a PVC film calender waste recovery device which comprises a base and a power device, the base is used for supporting the whole device, and the power device is arranged at the top of the base and used for providing a power source; the crushing mechanism is arranged at the top of the base, the crushing mechanism is used for crushing waste materials, and the crushing mechanism is divided into an upper part and a lower part; and the protection mechanism is arranged between the power device and the crushing mechanism. According to the waste recovery device of the PVC film calender, the power device drives the power roller to further drive the output shaft to rotate, finally, waste is cut and crushed through the crushing roller, it is ensured that the waste is effectively treated, when the load of the protection mechanism is too large, power transmission can be cut off in time, and the situation that the power device is damaged due to overload is avoided; long-term use of equipment is protected, and maintenance frequency and maintenance cost are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of crushers, in particular to a waste material recovery device for a PVC film calender. Background Art

[0002] PVC film calender waste recycling and crushing device is a device used to process scraps, waste films and other waste materials generated during the calendering production process. Its main function is to crush and pulverize PVC film waste to facilitate subsequent recycling and reuse, improve the utilization rate of raw materials, reduce waste, reduce production costs, and reduce environmental pollution.

[0003] In the waste recycling process of the PVC film calender, the waste usually enters the crushing device in a continuous form, and the crushing rollers shear and tear it to a recyclable particle size. However, since the waste material is soft and has a certain toughness, it is easy to accumulate during the crushing process, especially when the feed volume is large or the waste is curled or adhered, the waste will be entangled or squeezed between the crushing rollers, causing the rotation of the crushing rollers to be blocked. When too much waste accumulates and cannot be removed in time, the load of the crushing roller increases rapidly, and the motor needs to provide greater torque to drive the crushing mechanism to operate, but the motor output power is limited. If the output shaft is stuck for a long time, it will cause the motor to overheat or even burn. In addition, if the waste completely blocks the crushing roller, it may cause the crushing mechanism to get stuck, causing the motor to be in a forced drive state, resulting in overload of the motor coil, damage to the insulation layer or damage to mechanical parts, affecting the normal operation of the equipment and increasing maintenance costs. Summary of the invention

[0004] Technical issues solved In view of the deficiencies in the prior art, the present invention provides a PVC film calender waste recovery device, which solves the problem that PVC film calender waste is easily accumulated and entangled during the crushing process, causing the crushing roller to be blocked and stuck, resulting in damage to the motor.

[0005] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a PVC film calender waste recovery device, comprising a base, the base is used to support the entire device, a power device, the power device is arranged on the top of the base, the power device is used to provide a power source; a crushing mechanism, the crushing mechanism is arranged on the top of the base, the crushing mechanism is used to crush the waste, and the crushing mechanism is divided into an upper and lower part; a protective mechanism, the protective mechanism is arranged between the power device and the crushing mechanism, is used to transmit power, and disconnects the power connection when the load is too large; a slewing mechanism, the slewing mechanism is arranged on the protective mechanism, and is used to drive the crushing mechanism to reverse with a larger torque when the protective mechanism cuts off the power output.

[0006] Preferably, a cavity is provided on the inner wall of the base, and the cavity on the inner wall of the base is used to store crushed waste.

[0007] Preferably, a power device is fixedly connected to the top of the base, and the power device is fixedly connected by bolts.

[0008] Preferably, the crushing mechanism includes a bottom box, which is fixedly connected to the top of the base by bolts, and a connecting piece is provided on the bottom box, and a top box is connected to the side of the connecting piece away from the bottom box, and snap fasteners are provided on the top box and the bottom box, and the snap fasteners are used to fix and lock the top box and the bottom box, and a connecting end cover is fixedly connected to the outer wall of the bottom box, and a crushing roller is rotatably connected to the inner wall of the connecting end cover.

[0009] Preferably, a handle is provided on the top box, and the handle is used to facilitate the top box to rotate and open and close. A long crushing knife is provided on the crushing roller, and the long crushing knife is used to cut longer waste materials.

[0010] Preferably, the protective mechanism includes a power roller, which is fixedly connected to the output end of the power device, and the power roller is fixedly connected to the output shaft on the side away from the power device, and the shaft of the crushing roller is fixedly connected to a transmission cover, and a hollow cylindrical part is fixedly connected to the inner wall of the output shaft, and a solid cylindrical part is piston-connected to the inner wall of the hollow cylindrical part, and a trapezoidal block is fixedly connected to the side of the solid cylindrical part away from the solid cylindrical part, and the outer wall of the solid cylindrical part is elastically connected to the inner wall of the hollow cylindrical part through a return spring, and a transmission connecting groove is provided on the inner wall of the transmission cover, and a triangular prism groove is provided on the inner wall of the transmission connecting groove, and the triangular prism groove on the transmission connecting groove is used for clamping the trapezoidal block.

[0011] Preferably, the inner wall of the transmission cover is rotatably connected to the outer wall of the output shaft, and the outer wall of the trapezoidal block is slidably connected to the inner wall of the output shaft.

[0012] Preferably, the rotating mechanism includes planetary gears, which are arranged on the inner wall of the connecting end cover, an inner gear ring is provided on the inner wall of the transmission cover, the outer wall of the output shaft is rotatably connected to a transmission gear, a through tube is fixedly connected to the inner wall of the output shaft, a hollow cylindrical part 2 is fixedly connected to the inner wall of the output shaft, a solid cylindrical part 2 is piston-connected to the inner wall of the hollow cylindrical part 2, a transmission gear part is fixedly connected to the outer wall of the solid cylindrical part 2, one end of the through tube is connected to the inner wall of the hollow cylindrical part 1, and the other end of the through tube is connected to the inner wall of the hollow cylindrical part 2, and an inner transmission gear ring is provided on the inner wall of the transmission gear.

[0013] Preferably, the planetary gear is fixed to the connecting end cover by bolts, and the outer wall of the transmission gear is slidably connected to the inner wall of the output shaft.

[0014] (III) Beneficial effects Compared with the prior art, the present invention provides a PVC film calender waste recovery device, which has the following beneficial effects: 1. The waste recovery device of the PVC film calender drives the power roller through the power device, which in turn drives the output shaft to rotate, and finally cuts and crushes the waste through the crushing roller to ensure that the waste is effectively processed. When the load is too large, the protective mechanism can cut off the power transmission in time to avoid damage to the power device caused by overload, protect the long-term use of the equipment, and reduce the maintenance frequency and maintenance cost.

[0015] 2. The waste recovery device of the PVC film calender has a rotary mechanism that drives the crushing mechanism to reverse through a larger torque, which can effectively deal with stuck waste. The crushing rollers that rotate in the opposite direction can peel off the entangled materials or remove the hard stuck objects. It is particularly suitable for PVC film and other easily entangled materials. Combined with the overload protection and reversal functions, it can improve the processing stability and efficiency of flexible materials such as PVC film. When the waste is blocked or stuck, forced reversal can remove foreign matter.

[0016] 3. The waste recycling device of the PVC film calender adopts a split structure. The top box and the bottom box can be easily opened for manual maintenance and cleaning. This design helps to clean up the waste residue inside the crushing mechanism in time, avoid wear or damage to parts caused by long-term accumulation, and extend the service life of the equipment.

[0017] 4. When the PVC film calender waste recovery device is reversed, the device amplifies the torque of the output shaft through the gear transmission mechanism, providing a crushing capacity far exceeding that of the forward rotation, ensuring that stubborn stuck materials or hot melt agglomerates can be dealt with. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a PVC film calender waste recovery device proposed by the present invention; Figure 2 This is a structural schematic diagram of a crushing mechanism of a waste recovery device for a PVC film calender proposed by the present invention; Figure 3 This is a structural schematic diagram of a buckle component of a waste recovery device for a PVC film calender proposed by the present invention; Figure 4 This is a schematic structural diagram of a crushing roller of a waste recovery device for a PVC film calender proposed by the present invention; Figure 5 This is a structural schematic diagram of a long crushing knife of a waste recovery device for a PVC film calender proposed by the present invention; Figure 6 A schematic cross-sectional structure diagram of a connection end cover of a waste recovery device for a PVC film calender proposed by the present invention; Figure 7 A schematic cross-sectional structure diagram of a transmission cover of a waste recovery device for a PVC film calender proposed by the present invention; Figure 8 This is a schematic diagram of the longitudinal cross-sectional structure of an output shaft of a waste recovery device for a PVC film calender proposed by the present invention; Fig. 9 This is a schematic cross-sectional structure diagram of a hollow cylindrical component 1 of a waste recovery device for a PVC film calender proposed by the present invention; Fig.10 This is a schematic diagram of the structure of a transmission connection groove of a waste recovery device for a PVC film calender proposed by the present invention; Fig.11 This is a schematic diagram of the transverse cross-sectional structure of an output shaft of a waste recovery device for a PVC film calender proposed by the present invention; Fig.12 This is a schematic structural diagram of a transmission gear of a waste recovery device for a PVC film calender proposed by the present invention.

[0019] In the figure: 1. base; 2. power device; 3. crushing mechanism; 31. bottom box; 32. connecting piece; 33. top box; 34. snap-fit ​​piece; 35. handle; 36. connecting end cover; 37. crushing roller; 38. long crushing knife; 4. protection mechanism; 41. power roller; 42. output shaft; 43. transmission cover; 44. hollow cylindrical part one; 45. solid cylindrical part one; 46. trapezoidal block; 47. return spring; 48. transmission connecting groove; 5. rotary mechanism; 51. planetary gear; 52. transmission gear; 53. inner gear ring; 54. through tube; 55. hollow cylindrical part two; 56. solid cylindrical part two; 57. transmission gear part; 58. inner transmission gear ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1 - Fig.12A PVC film calender waste recycling device comprises a base 1, the base 1 is used to support the entire device, a power device 2, the power device 2 is arranged on the top of the base 1, and the power device 2 is used to provide a power source; a crushing mechanism 3, the crushing mechanism 3 is arranged on the top of the base 1, and the crushing mechanism 3 is used to crush the waste. The crushing mechanism 3 is divided into an upper and lower part, which can be easily opened for manual maintenance. The split structure enables the operator to quickly open the equipment, clean up the waste accumulation, and resume normal operation. The residual waste inside the crushing mechanism 3 is cleaned in time to avoid long-term accumulation causing wear or damage to parts, thereby extending the service life of the crushing device; a protective mechanism 4, the protective mechanism 4 is arranged on the power device 2 It is used to transmit power to the crushing mechanism 3 and disconnect the power connection when the load is too large. When the crushing mechanism 3 is blocked, stuck or overloaded due to waste, the protective mechanism 4 can cut off the power transmission in time to avoid continuous overload of the power device 2, prevent the motor of the power device 2 from burning or mechanical parts from being damaged, thereby reducing the maintenance frequency and reducing the equipment maintenance cost; the rotating mechanism 5 is arranged on the protective mechanism 4, and is used to drive the crushing mechanism 3 to reverse with a larger torque when the protective mechanism 4 cuts off the power output. By reversing the crushing mechanism 3, the stuck foreign matter is reversed to withdraw, avoiding damage to the equipment due to long-term blockage. The high-torque reversal can cope with complex materials and peel off flexible materials wrapped around the blade.

[0022] A cavity is provided on the inner wall of the base 1, and the cavity on the inner wall of the base 1 is used to store crushed waste. A power device 2 is fixedly connected to the top of the base 1, and the power device 2 is fixedly connected by bolts to facilitate subsequent disassembly and replacement.

[0023] The crushing mechanism 3 includes a bottom box 31, which is fixedly connected to the top of the base 1 by bolts, and a connecting piece 32 is provided on the bottom box 31. A top box 33 is connected to the side of the connecting piece 32 away from the bottom box 31, so that the top box 33 and the bottom box 31 are hinged and rotated with each other, and a clip 34 is provided on the top box 33 and the bottom box 31. The clip 34 is used to fix and lock the top box 33 and the bottom box 31, so that the top box 33 and the bottom box 31 remain stably engaged with each other during use, and a connecting end cover 36 is fixedly connected to the outer wall of the bottom box 31, and a crushing roller 37 is rotatably connected to the inner wall of the connecting end cover 36. A handle 35 is provided on the top box 33, and the handle 35 is used to conveniently drive the top box 33 to rotate and open and close. A long crushing knife 38 is provided on the crushing roller 37, and the long crushing knife 38 is used to cut longer waste materials. Continuous cutting of the material by the long blade can generate more uniform crushed materials, which is conducive to the subsequent cutting and crushing of the crushing roller 37.

[0024] The protection mechanism 4 includes a power roller 41, which is fixedly connected to the output end of the power device 2. The power roller 41 is fixedly connected to an output shaft 42 on the side away from the power device 2. The shaft of the crushing roller 37 is fixedly connected to a transmission cover 43. A hollow cylindrical member 44 is fixedly connected to the inner wall of the output shaft 42. A solid cylindrical member 45 is connected to the piston on the inner wall of the hollow cylindrical member 44. A trapezoidal block 46 is fixedly connected to the side of the solid cylindrical member 45 away from the solid cylindrical member 45. The outer wall of the cylindrical member 45 is elastically connected to the inner wall of the hollow cylindrical member 44 through a return spring 47. The return spring 47 drives the solid cylindrical member 45 and the trapezoidal block 46 to move toward the hollow cylindrical member 44. A transmission connection groove 48 is provided on the inner wall of the transmission cover 43. A triangular prism groove is provided on the inner wall of the transmission connection groove 48. The triangular prism groove on the transmission connection groove 48 is used to clamp the trapezoidal block 46. When the output shaft 42 rotates, the output shaft 42 drives the trapezoidal block 46 to rotate. The inclined surface on the transmission connecting groove 46 contacts the triangular prism groove on the inner wall of the transmission connecting groove 48, so that the transmission connecting groove 48 is driven to rotate, and the transmission connecting groove 48 drives the transmission cover 43 and the crushing roller 37 to rotate to perform the crushing work. At this time, the force on the inclined surface of the trapezoidal block 46 can be disassembled into a circumferential force and a force to compress the return spring 47. Since the load is not large at this time, the return spring 47 will not be compressed. At this time, under the action of the return spring 47, the solid cylindrical member 45 and the trapezoidal block 46 will not retract into The return spring 47 is compressed due to the large force applied to the output shaft 42 until the crushing roller 37 encounters a large load, causing the solid cylindrical member 45 and the trapezoidal block 46 to retract into the output shaft 42. At this time, the trapezoidal block 46 can no longer drive the transmission connection groove 48 to rotate, thus cutting off the transmission from the transmission connection groove 48 to the crushing roller 37, thereby playing a protective role. The inner wall of the transmission cover 43 is rotatably connected to the outer wall of the output shaft 42, and the outer wall of the trapezoidal block 46 is slidably connected to the inner wall of the output shaft 42.

[0025] The rotary mechanism 5 includes a planetary gear 51, which is arranged on the inner wall of the connecting end cover 36. An inner gear ring 53 is provided on the inner wall of the transmission cover 43. The outer wall of the output shaft 42 is rotatably connected to the transmission gear 52. A through tube 54 is fixedly connected to the inner wall of the output shaft 42. A hollow cylindrical member 55 is fixedly connected to the inner wall of the output shaft 42. A solid cylindrical member 56 is connected to the piston on the inner wall of the hollow cylindrical member 55. The outer wall of the solid cylindrical member 56 is A transmission toothed part 57 is fixedly connected to the wall, which is communicated with the inner wall of the hollow cylindrical part 1 44 through one end of the tube 54, and is communicated with the inner wall of the hollow cylindrical part 2 55 through the other end of the tube 54, so that the inner wall of the hollow cylindrical part 2 55 and the inner wall of the hollow cylindrical part 1 44 are connected to each other, an inner transmission gear ring 58 is opened on the inner wall of the transmission gear 52, the planetary gear 51 and the connecting end cover 36 are fixed by bolts, and the outer wall of the transmission toothed part 57 is slidably connected to the inner wall of the output shaft 42.

[0026] In summary, when the PVC film calender waste recycling device is used, the PVC film calender waste to be crushed is put into the top box 33, the power device 2 is turned on to drive the power roller 41 to rotate, and the power roller 41 drives the output shaft 42 to rotate. When the output shaft 42 rotates, the output shaft 42 drives the trapezoidal block 46 to rotate, and the inclined surface on the trapezoidal block 46 abuts against the triangular prism groove on the inner wall of the transmission connection groove 48, so that the transmission connection groove 48 is driven to rotate, and the transmission connection groove 48 drives the transmission cover 43 and the crushing roller 37 to rotate to perform the crushing work. At this time, the force on the inclined surface of the trapezoidal block 46 can be disassembled into a circumferential force and a The force compresses the return spring 47. Since the load is not large at this time, the return spring 47 will not be compressed. At this time, under the action of the return spring 47, the solid cylindrical part 45 and the trapezoidal block 46 will not be retracted into the output shaft 42 until the crushing roller 37 encounters a larger load. The return spring 47 is compressed by a larger force, causing the solid cylindrical part 45 and the trapezoidal block 46 to retract into the output shaft 42. At this time, the trapezoidal block 46 can no longer drive the transmission connecting groove 48 to rotate, cutting off the transmission from the transmission connecting groove 48 to the crushing roller 37, avoiding damage to the power device 2 when the crushing roller 37 is stuck, and playing a protective function for the equipment.

[0027] When the solid cylindrical member 1 45 and the trapezoidal block 46 move toward the direction of the hollow cylindrical member 1 44, the solid cylindrical member 1 45 will squeeze the gas in the hollow cylindrical member 1 44 through the tube 54 into the hollow cylindrical member 2 55, so that high-pressure air is formed in the hollow cylindrical member 2 55. The high-pressure air in the hollow cylindrical member 2 55 drives the solid cylindrical member 2 56 and the transmission gear member 57 to move toward the inner transmission gear ring 58, so that the inner transmission gear ring 58 is engaged with the transmission gear member 57. At this time, the output shaft 42 drives the transmission gear member 57 to rotate, and the transmission gear member 57 is rotated. The transmission gear 52 is driven to rotate through the inner transmission gear ring 58, and the transmission gear 52 drives the inner gear ring 53 to reverse through the planetary gear 51, and the inner gear ring 53 drives the transmission cover 43 to reverse, and the transmission cover 43 drives the crushing roller 37 to reverse, so that it automatically switches to the reverse power chain when overloaded, and the crushing roller 37 rotates in the reverse direction when reversed, and the reverse cutting movement of the crushing roller 37 is used to peel off the winding material or remove the hard jammed material. In view of the characteristics of PVC film that is easy to be wound and stuck, the combination of overload protection and reversal function significantly improves the processing stability of flexible materials.

[0028] When reversing, since the number of teeth of the transmission gear 52 is less than that of the inner gear ring 53, the torque of the output shaft 42 is amplified, further making the reversing process smoother. For stubborn stuck materials such as hot melt agglomerates, a torque far exceeding the forward rotation is provided to force the foreign matter out.

[0029] After one circle of reverse rotation, the return spring 47 will drive the solid cylindrical member 45 and the trapezoidal block 46 to one end of the transmission connecting groove 48 to continue forward rotation and cutting and crushing.

[0030] When the crushing mechanism 3 needs to be cleaned, the buckle 34 is opened, so that the top box 33 and the bottom box 31 are rotated and opened relative to each other under the action of the connecting member 32, which facilitates cleaning.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A PVC film calender waste recovery device, characterized in that: include A base (1), wherein the base (1) is used to support the entire device, A power device (2), the power device (2) being arranged on the top of the base (1), and the power device (2) being used to provide a power source; A crushing mechanism (3), the crushing mechanism (3) being arranged on the top of the base (1), the crushing mechanism (3) being used to crush waste materials, the crushing mechanism (3) being divided into two parts, an upper part and an lower part; A protection mechanism (4), the protection mechanism (4) being arranged between the power device (2) and the crushing mechanism (3), and being used for transmitting power and disconnecting the power connection when the load is too large; A slewing mechanism (5) is arranged on the protection mechanism (4) and is used to drive the crushing mechanism (3) to reverse with a greater torque when the protection mechanism (4) cuts off the power output.

2. A PVC film calender waste recovery device according to claim 1, characterized in that: A cavity is provided on the inner wall of the base (1), and the cavity on the inner wall of the base (1) is used to store crushed waste.

3. A PVC film calender waste recovery device according to claim 1, characterized in that: The top of the base (1) is fixedly connected with a power device (2), and the power device (2) is fixedly connected via bolts.

4. A PVC film calender waste recovery device according to claim 1, characterized in that: The crushing mechanism (3) comprises a bottom box (31), the bottom box (31) being fixedly connected to the top of the base (1) by means of bolts, the bottom box (31) being provided with a connecting piece (32), a side of the connecting piece (32) away from the bottom box (31) being connected to a top box (33), the top box (33) and the bottom box (31) being provided with a snap-fit ​​piece (34), the snap-fit ​​piece (34) being used to fix and lock the top box (33) and the bottom box (31), the outer wall of the bottom box (31) being fixedly connected to a connecting end cover (36), the inner wall of the connecting end cover (36) being rotatably connected to a crushing roller (37).

5. A PVC film calender waste recovery device according to claim 4, characterized in that: The top box (33) is provided with a handle (35), and the handle (35) is used to conveniently drive the top box (33) to rotate and open and close. The crushing roller (37) is provided with a long crushing knife (38), and the long crushing knife (38) is used to cut longer waste materials.

6. A PVC film calender waste recovery device according to claim 5, characterized in that: The protection mechanism (4) comprises a power roller (41), the power roller (41) being fixedly connected to the output end of the power device (2), the side of the power roller (41) away from the power device (2) being fixedly connected to an output shaft (42), the shaft of the crushing roller (37) being fixedly connected to a transmission cover (43), the inner wall of the output shaft (42) being fixedly connected to a hollow cylindrical member (44), the inner wall of the hollow cylindrical member (44) being piston-connected to a solid cylindrical member (45 ), a trapezoidal block (46) is fixedly connected to a side of the solid cylindrical member (45) away from the solid cylindrical member (45), the outer wall of the solid cylindrical member (45) and the inner wall of the hollow cylindrical member (44) are elastically connected via a return spring (47), a transmission connection groove (48) is provided on the inner wall of the transmission cover (43), a triangular prism groove is provided on the inner wall of the transmission connection groove (48), and the triangular prism groove on the transmission connection groove (48) is used for clamping the trapezoidal block (46).

7. A PVC film calender waste recovery device according to claim 6, characterized in that: The inner wall of the transmission cover (43) is rotatably connected to the outer wall of the output shaft (42), and the outer wall of the trapezoidal block (46) is slidably connected to the inner wall of the output shaft (42).

8. A PVC film calender waste recovery device according to claim 6, characterized in that: The rotary mechanism (5) comprises a planetary gear (51), the planetary gear (51) being arranged on the inner wall of the connecting end cover (36), an inner gear ring (53) being provided on the inner wall of the transmission cover (43), a transmission gear (52) being rotatably connected to the outer wall of the output shaft (42), a through tube (54) being fixedly connected to the inner wall of the output shaft (42), a second hollow cylindrical member (55) being fixedly connected to the inner wall of the output shaft (42), a second solid cylindrical member (56) being piston-connected to the inner wall of the second hollow cylindrical member (55), a transmission gear member (57) being fixedly connected to the outer wall of the second solid cylindrical member (56), one end of the through tube (54) being in communication with the inner wall of the first hollow cylindrical member (44), the other end of the through tube (54) being in communication with the inner wall of the second hollow cylindrical member (55), and an inner transmission gear ring (58) being provided on the inner wall of the transmission gear (52).

9. A PVC film calender waste recovery device according to claim 8, characterized in that: The planetary gear (51) is fixed to the connecting end cover (36) by means of bolts, and the outer wall of the transmission gear (57) is slidably connected to the inner wall of the output shaft (42).

Images