Sugarcane cut-off machine

Abstract

The utility model relates to the field of cut-off machines, in particular to a sugarcane cut-off machine which comprises a machine frame, a first driven wheel and a tensioning device, a vertical beam is installed on the machine frame, a cross beam is installed on the top of the vertical beam, rotating shafts are installed at the two ends of the cross beam, at least two first driving wheels are connected to the two rotating shafts in a sleeved mode, and a linkage belt is arranged between the opposite driving wheels. The first driven wheel is installed on the rotating shaft provided with the cutter in a sleeving mode and driven by the first driving motor to rotate so that the linkage belt can rotate, a cutter shaft is installed on the portion, close to one end of the first driven wheel, of the cross beam, the cutter shaft is driven by the second driving motor to rotate, and the cutter shaft is sleeved with the cutter. The tensioning device is used for tensioning the first driving motor and the first driven wheel; sugarcanes are transversely placed on the linkage belt from the front end, are conveyed to the rotating shaft at the tail end and are cut into a plurality of sections by the cutter. According to the utility model, sugarcanes are transversely placed on the linkage belt from the front end, then conveyed and finally cut into sections, so that the feeding efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of cutters, in particular to a sugarcane cutter. Background Art

[0002] Sugarcane is a tropical crop with a mild nature and sweet taste. It is an excellent product for relieving fever and promoting salivation. It can help the spleen and stomach, eliminate phlegm and relieve coughs. It is also the raw material for producing sucrose and can be used to extract ethanol. Whether it is used as food or to extract sucrose and ethanol, it needs to be cut. At present, most people cut it manually using props or using machines.

[0003] Currently, the most common sugarcane cutter feeds single sugarcane strands straight into the blade, feeding the sugarcane vertically (i.e., feeding straightly), cutting the sugarcane one section at a time. Another method uses a guillotine to manually cut a single sugarcane into sections. Both feeding methods are relatively inefficient and slow, and the manual cutter also requires handholding. Utility Model Content

[0004] The purpose of the present invention is to provide a sugarcane cutter to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A sugarcane cutting machine, comprising:

[0007] A frame, wherein a vertical beam is mounted on the frame, a horizontal beam is mounted on the top of the vertical beam, a rotating shaft is mounted at both ends of the horizontal beam, at least two first driving wheels are sleeved on the two rotating shafts, and a linkage belt is provided between the opposing driving wheels;

[0008] a first driven wheel, which is mounted on the rotating shaft at the end and is driven to rotate by the first driving motor to rotate the linkage belt;

[0009] A cutter shaft is mounted on the crossbeam near one end of the first driven wheel. The cutter shaft is driven to rotate by the second drive motor and a cutter is mounted on the cutter shaft.

[0010] A tensioning device, the tensioning device being used to tension the first drive motor and the first driven wheel;

[0011] The sugarcane is placed horizontally on the linkage belt from the front end and sent to the rotating shaft at the end, where it is cut into several sections by a cutter.

[0012] Furthermore, the tensioning device includes a base, a screw rod and a sliding platform sliding with the base, the first drive motor is installed on the sliding platform, and the screw rod is used to drive the sliding platform to slide relative to the base to achieve tension between the first drive motor and the first driven wheel.

[0013] Furthermore, the base is fixed on the middle crossbeam, the middle crossbeam is installed on the reinforcing plates on both sides of the vertical beam, the front end of the base is installed with a shaft sleeve, the front end of the sliding platform is installed with a screw sleeve, and the screw sleeve is installed on the shaft sleeve and the screw sleeve and passes through the sliding platform.

[0014] Furthermore, the front end of the screw rod is exposed and is fitted with a rotating handle, the top of the base is provided with a raised slide rail, and the bottom of the sliding platform is provided with a slide groove that cooperates with the slide rail.

[0015] Furthermore, a locking component for locking is installed between the sliding platform and the base platform.

[0016] Furthermore, the locking component includes a locking bolt, which passes through the sliding platform and can be tightened against the base platform.

[0017] Furthermore, the locking component includes a tightening screw, one end of which passes through a bracket installed on the middle beam and an auxiliary fixing bracket and is fitted with a first bearing, and a top plate that can be tightened against the sliding table is fitted on the first bearing, and the other end of the tightening screw has a handwheel.

[0018] Furthermore, claws are installed on the linkage belt, and gaps are formed between adjacent claws. Teeth are provided on both the front and rear sides of the claws.

[0019] Furthermore, the distance between the rotating shaft at the end of the knife shaft and the ground is higher than the distance between the rotating shaft at the front end, the first wheel of the first drive motor and the first driven wheel are linked by a first chain belt, the knife shaft is square, the center notch of the cutter is square, and the outer end of the cutter is circular as a whole.

[0020] Furthermore, the second drive motor is installed on the vertical beam at the end, and the second wheel of the second drive motor is linked to the second driven wheel through a second chain belt. The second driven wheel is sleeved on one end of the knife shaft, and both ends of the knife shaft have flywheels.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] In the utility model, the sugarcane is placed horizontally on the linkage belt from the front end and placed between adjacent claws to form a placement gap, so that the sugarcane is relatively stuck. Then the first wheel of the first drive motor drives the first chain belt to rotate the first driven wheel, thereby rotating the linkage belt to transport the sugarcane from the front to the cutter at the end. In this way, the sugarcane can be continuously and collectively placed horizontally for transportation and finally cut into sections, thereby improving the feeding efficiency.

[0023] In the present invention, the distance between the rotating shaft at the end of the cutter shaft and the ground is higher than that between the rotating shaft at the front end and the ground. In this way, the sugarcane feed moves upward from the front end to the end, that is, the area near the cutter blade is higher, which makes it easier to cut the feed.

[0024] The utility model drives the second chain belt through the second wheel of the second driving motor, thereby driving the second driven wheel and the knife shaft to rotate, and the knife shaft rotates to drive the cutter, so that the sugarcane transported to the end of the linkage belt can be cut into several sections and then dropped at the protective cover.

[0025] In the present invention, the first drive motor can rotate forward and reverse. Therefore, after long-term operation, the first chain belt between the first wheel of the first drive motor and the first driven wheel tends to become loose. In this case, a tensioning device is required to adjust the tension. The tensioning device is simple and convenient for adjusting the tension of the first chain belt, which helps maintain the tension of the first chain belt and slows down the tendency of the first chain belt to gradually become loose. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of Example 1 of the utility model.

[0027] Figure 2 This is a left-side structural schematic diagram of Example 1 of the present utility model.

[0028] Figure 3 This is a schematic diagram of the top view of the structure of Example 1 of the utility model.

[0029] Figure 4 This is a schematic structural diagram of the tensioning device in Example 1 of the utility model.

[0030] Figure 5 This is a structural diagram of the claw and the teeth on the claw in Example 1 of the utility model.

[0031] Figure 6 This is a structural diagram of Example 2 of the present utility model.

[0032] Figure 7 This is a schematic structural diagram of the tensioning device of Example 2 of the present utility model.

[0033] In the figure: 1-frame, 2-vertical beam, 3-cross beam, 4-support plate, 5-rotating shaft, 50-second bearing, 51-first driving wheel, 6-reinforcement plate, 7-middle cross beam, 8-first driven wheel, 9-first driving motor, 90-first wheel, 10-first chain belt, 11-tensioning device, 110-base, 111-sliding table, 112-sleeve, 113-screw sleeve, 114-screw, 115-handle, 116-slide rail, 117-slide groove, 1 18-locking bolt, 119-bracket, 12-knife shaft, 120-tensioning screw, 121-auxiliary fixing bracket, 122-first bearing, 123-top plate, 124-handwheel, 14-electric control box, 15-second drive motor, 16-second wheel, 17-second driven wheel, 18-second chain belt, 19-protective cover, 20-teeth, 21-linkage belt, 22-cutter, 23-claw, 24-placement gap, 25-universal wheel, 26-flywheel. DETAILED DESCRIPTION

[0034] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "upper end", "lower end", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end", etc., indicating the orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "sleeved," "socketed," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0037] Example 1

[0038] See also Figures 1 to 5 , the utility model provides a technical solution:

[0039] A sugarcane cutting machine, comprising:

[0040] A frame 1 is provided with a vertical beam 2, a horizontal beam 3 is provided on the top of the vertical beam 2, a rotating shaft 5 is provided at both ends of the horizontal beam 3, at least two first driving wheels 51 are sleeved on the two rotating shafts, and a linkage belt 21 is provided between the opposing driving wheels;

[0041] The first driven wheel 8 is mounted on the rotating shaft 5 at the end (i.e., the shaft on which the cutter 22 is mounted), and is driven to rotate by the first drive motor 9 to rotate the linkage belt 21. In this technical solution, the place where the sugarcane begins to be placed horizontally on the linkage belt 21 is called the front end, and the place where the sugarcane is cut by the cutter 22 is called the end.

[0042] Both ends of the rotating shaft 5 are respectively mounted at both ends of the crossbeam 3 through second bearings 50 , so that the rotating shaft 5 can achieve better rotation.

[0043] A cutter shaft 12 is mounted on the crossbeam 3 near one end of the first driven wheel 8. The cutter shaft 12 is driven to rotate by a second drive motor 15, and a cutter 22 is mounted on the cutter shaft 12.

[0044] A tensioning device 11, the tensioning device 11 is used to tension the first drive motor 9 and the first driven wheel 8;

[0045] The sugarcane is placed horizontally on the linkage belt 21 from the front end and sent to the rotating shaft 5 at the end, and is cut into several sections by the cutter 22.

[0046] like Figure 1 and Figure 3 As shown, the second drive motor 15 is mounted on the end vertical beam 2, and the second wheel 16 of the second drive motor 15 is linked to the second driven wheel 17 via a second chain belt 18. The second driven wheel 17 is sleeved on one end of the cutter shaft 12, and the other end of the cutter shaft 12 has a flywheel 26. The first wheel 90 of the first drive motor 9 is linked to the first driven wheel 8 via a first chain belt 10.

[0047] The installation of the middle crossbeam 7 strengthens the overall strength of the frame 1, vertical beams 2, and crossbeams 3. The first drive motor 9 rotates, and the rotor drives the first wheel 90 and the first chain belt 10, thereby rotating the first driven wheel 8. The rotation of the first driven wheel 8 rotates the linkage belt 21 between the two rotating shafts 5, thereby transporting the sugarcane placed on the linkage belt 21 from the front end to the rear end, and then cutting it into several sections by the cutter 22.

[0048] By installing flywheels 26 at both ends of the cutter shaft 12, Figure 2The flywheel 26 on the right is closer to the protective cover 19 than the second driven wheel 17. When driving the cutter shaft 12 and the cutter 22 to rotate, it stores energy and reduces the impact of the second drive motor 15 on the cutter shaft 12 when running, thereby keeping the cutter shaft 12 and the cutter 22 balanced and making the cutter 22 run more smoothly.

[0049] Specifically, the linkage belt 21 is provided with a claw 23, which is configured as a hollow rectangle (reducing the weight of the claw 23), and the bottom portion thereof is detachably fixed to the chain; a placement gap 24 is formed between adjacent claws 23; teeth 20 are provided on both the front and rear sides of the claw 23, and the teeth 20 can be a stepped type with uneven shapes (such as Figure 5 ), can also be triangular sawtooth-shaped, which is just right for clamping the strip of sugarcane so that the cutter 22 can rotate and cut. Sugarcane can be inserted from the front end and can be stuck in the placement gap 24, which makes transportation more stable. In addition, the side teeth 20 can increase the friction when the sugarcane moves, reducing the probability of the sugarcane slipping out of the placement gap 24 and outside the crossbeam 3, so that the sugarcane can be smoothly transported from the front end to the end.

[0050] The height of the claws 23 is greater than the diameter of the sugarcane stalk (but does not touch the blade shaft 12). That is, when the sugarcane is placed in the placement gap 24, the top of the claws 23 is not lower than the top of the sugarcane stalk to prevent the sugarcane from slipping out of the placement gap 24.

[0051] In this embodiment, the first chain belt 10 and the linkage belt 21 are both chains, and the first drive wheel 51, the first driven wheel 8, and the first wheel 90 are all sprockets. To maintain the stability of the linkage belts 21, a support plate 4 is installed beneath each linkage belt 21. The support plate 4 is used to support or place the upper linkage belt 21. However, there is space between the linkage belts 21 to allow the cut sugarcane to fall.

[0052] Specifically, the distance between the rotating shaft 5 at the end of the cutter shaft 12 and the ground is higher than the distance between the rotating shaft 5 at the front end. This allows the sugarcane feed to move upward from the front end to the rear end (so that it is closer to the claws at the back). That is, the area near the cutting edge of the cutter 22 is higher, which makes it easier to cut the feed. Of course, the tilt angle can also be omitted and the feed can be directly moved horizontally.

[0053] Specifically, the blade shaft 12 is square, and the center notch of the cutter 22 is square. It is easy to fix the cutter 22 on the blade shaft 12. The outer end of the cutter 22 is circular as a whole, so a circular saw can also be used.

[0054] In this embodiment, Figure 3 As shown, each cutter 22 is staggered with each first driving wheel 51 at the end, and there is a suitable distance between the cutter 22 and the first driving wheel 51 so as to be used for cutting sugarcane.

[0055] In this embodiment, a claw 23 (set in one direction or two directions) can be provided on the chain (linkage belt 21), which makes feeding easier and serves to fix the sugarcane strips during cutting, because the feeding is horizontal.

[0056] In this embodiment, universal wheels 25 with brake functions are installed at the bottom of the frame 1. The number of universal wheels 25 can be four or more, so that the entire cutting machine can be moved to a suitable position. An electric control box 14 is installed on the vertical beam 2 to facilitate the control of the first drive motor 9 and the second drive motor 15.

[0057] Specifically, the tensioning device 11 includes a base 110, a screw 114, and a sliding platform 111 that slides with the base 110. The first drive motor 9 is mounted on the sliding platform 111. The screw 114 is used to drive the sliding platform 111 to slide relative to the base 110, thereby tensioning the first drive motor 9 and the first driven wheel 8. The base 110 is fixed to the intermediate crossbeam 7, which is mounted on the reinforcing plates 6 on both sides of the vertical beam 2. A shaft sleeve 112 is mounted at the front end of the base 110, and a screw sleeve 113 is mounted at the front end of the sliding platform 111. The screw 114 is fitted with the shaft sleeve 112 and the screw sleeve 113 and passes through the sliding platform 111. The front end of the screw 114 is exposed and fitted with a handle 115. A raised slide rail 116 is provided on the top of the base 110, and a slide groove 117 is provided at the bottom of the sliding platform 111 to cooperate with the slide rail 116. A locking component is installed between the sliding platform 111 and the base platform 110 for locking. In this embodiment, the locking component is a locking bolt 118 .

[0058] The first drive motor 9 can realize forward rotation and reverse rotation (reverse material withdrawal), so after long-term operation, the first chain belt 10 (chain) between the sprocket (first wheel 90) of the first drive motor 9 and the first driven wheel 8 is easy to loosen. At this time, the tensioning device 11 is required to adjust the tightness. If the first chain belt 10 is loose, turn the handle 115 so that the screw rod 114 only rotates on the shaft sleeve 112 without moving, and cooperates with the screw rod sleeve 113. Since the screw rod sleeve 113 is installed on the slide groove 117, the slide groove 117 can slide relative to the base 110. The base 110 is fixed on the middle crossbeam 7 and is relatively immovable. In this way, the slide rail 116 slides with the slide groove 117 to adjust the position of the first drive motor 9, that is, adjust the distance between the first wheel 90 and the first driven wheel 8, so as to achieve tensioning of the first chain belt 10. After the sliding platform 111 is moved and adjusted to a suitable position on the base 110 , tightening the locking bolt 118 can reduce the displacement of the sliding platform 111 , which is beneficial to maintaining the tightness of the first chain belt 10 and slowing down the trend of the first chain belt 10 becoming gradually loose.

[0059] In this embodiment, the second wheel 16 of the second drive motor 15 drives the second chain belt 18, which in turn drives the second driven wheel 17 and the blade shaft 12. The blade shaft 12 then drives the cutter 22, thereby cutting the sugarcane, which is transported to the end of the linkage belt 21, into several sections. A protective cover 19 is installed above the blade shaft 12 to prevent the sugarcane from falling after being cut, thus protecting the operator.

[0060] During the specific operation of this embodiment, the sugarcane is placed horizontally on the linkage belt 21 from the front end and placed between adjacent claws 23 to form a placement gap 24, so that it is relatively stuck. Then the first wheel 90 of the first drive motor 9 drives the first chain belt 10 to rotate the first driven wheel 8, thereby rotating the linkage belt 21, and transporting the sugarcane from the front to the cutter 22 at the end. The second chain belt 18 is driven by the second wheel 16 of the second drive motor 15, thereby driving the second driven wheel 17 and the knife shaft 12 to rotate. The knife shaft 12 rotates to drive the cutter 22, so that the sugarcane transported to the end horizontally on the linkage belt 21 can be cross-cut into several sections, and then dropped at the protective cover 19.

[0061] Example 2

[0062] See also Figures 6 and 7 The present invention provides a technical solution that is basically the same as that of Example 1, with the following slight differences:

[0063] The locking component includes a tightening screw rod 120, one end of which passes through a bracket 119 installed on the middle crossbeam 7 and an auxiliary fixing bracket 121 and is fitted with a first bearing 122. A top plate 123 that can be tightly pressed against the sliding table 111 is fitted on the first bearing 122, and the other end of the tightening screw rod 120 has a handwheel 124.

[0064] After the sliding platform 111 is moved and adjusted to a suitable position on the base 110, in order to prevent the sliding platform 111 from moving, the hand wheel 124 can be rotated, and the hand wheel 124 drives the tensioning screw 120 to rotate. The tensioning screw 120 penetrates the bracket 119 and the auxiliary fixing bracket 121 and is threadedly connected to the two, so that the top plate 123 can be driven to move toward the side of the sliding platform 111, and finally contact and tighten with the sliding platform 111. Because the end of the top plate 123 and the tensioning screw 120 are matched through the first bearing 122, the two can rotate relative to each other, and the rotation of the tensioning screw 120 will not affect the fit between the top plate 123 and the sliding platform 111.

[0065] In this embodiment, the top plate 123 is located below the screw rod 114 and can be staggered with the slide groove 117, or the top plate 123 can be located between the slide groove 117 and the screw rod 114 to avoid affecting the cooperation between the slide rail 116 and the slide groove 117. The bracket 119 and the auxiliary fixing bracket 121 are parallel and spaced apart. In this way, the two brackets, especially the auxiliary fixing bracket 121, can ensure the movement of the screw rod 114 and the stability of the support and tightening screw rod 120.

[0066] After the top plate 123 contacts and presses against the sliding platform 111, the displacement of the sliding platform 111 is reduced, and the sliding platform 111 is supported to prevent the sliding platform 111 from retreating, which is conducive to maintaining the tightness of the first chain belt 10 and slowing down the tendency of the first chain belt 10 to gradually become loose. In addition, the impact of the first drive motor 9 on the rotating shaft 5 at the end of the knife shaft 12 during operation is reduced, thereby maintaining the balance of the rotating shaft 5 and the linkage belt 21, and making the linkage belt 21 run more smoothly.

[0067] The present utility model, the undescribed parts are prior art.

[0068] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sugarcane cutting machine, characterized in that: include: A frame (1), wherein a vertical beam (2) is mounted on the frame (1), a horizontal beam (3) is mounted on the top of the vertical beam (2), rotating shafts (5) are mounted at both ends of the horizontal beam (3), at least two first driving wheels (51) are sleeved on the two rotating shafts, and a linkage belt (21) is provided between the opposing driving wheels; A first driven wheel (8), which is mounted on the rotating shaft (5) at the end and is driven to rotate by a first driving motor (9) so as to rotate the linkage belt (21); A cutter shaft (12) is mounted on the crossbeam (3) near one end of the first driven wheel (8), the cutter shaft (12) is driven to rotate by a second drive motor (15), and a cutter (22) is mounted on the cutter shaft (12); A tensioning device (11), the tensioning device (11) being used to tension the first drive motor (9) and the first driven wheel (8); The sugarcane is placed horizontally on the linkage belt (21) from the front end and sent to the rotating shaft (5) at the end, and is cut into several sections by the cutter (22).

2. A sugarcane cutting machine according to claim 1, characterized in that: The tensioning device (11) comprises a base (110), a screw rod (114), and a sliding platform (111) that slides with the base (110); the first drive motor (9) is mounted on the sliding platform (111); the screw rod (114) is used to drive the sliding platform (111) to slide relative to the base (110) so as to achieve tension between the first drive motor (9) and the first driven wheel (8).

3. A sugarcane cutting machine according to claim 2, characterized in that: The base (110) is fixed on the middle crossbeam (7), and the middle crossbeam (7) is installed on the reinforcing plates (6) on both sides of the vertical beam (2). The front end of the base (110) is installed with a shaft sleeve (112), and the front end of the sliding platform (111) is installed with a screw sleeve (113). The screw (114) is fitted with the shaft sleeve (112) and the screw sleeve (113) and passes through the sliding platform (111).

4. A sugarcane cutting machine according to claim 3, characterized in that: The front end of the screw rod (114) is exposed and is fitted with a rotating handle (115). The top of the base (110) is provided with a raised slide rail (116). The bottom of the sliding platform (111) is provided with a slide groove (117) that cooperates with the slide rail (116).

5. A sugarcane cutter according to any one of claims 2 to 4, characterized in that: A locking component for locking is installed between the sliding platform (111) and the base platform (110).

6. A sugarcane cutting machine according to claim 5, characterized in that: The locking component includes a locking bolt (118), which passes through the sliding platform (111) and can be tightened against the base platform (110).

7. The sugarcane cutting machine according to claim 5, characterized in that: The locking component includes a tightening screw rod (120), one end of which passes through a bracket (119) installed on the middle crossbeam (7) and an auxiliary fixing bracket (121) and is then fitted with a first bearing (122), and a top plate (123) capable of pressing against the sliding platform (111) is fitted on the first bearing (122), and the other end of the tightening screw rod (120) is provided with a hand wheel (124).

8. The sugarcane cutting machine according to claim 1, characterized in that: The linkage belt (21) is provided with claws (23), and adjacent claws (23) are provided with placement gaps (24). The front and rear sides of the claws (23) are provided with teeth (20).

9. The sugarcane cutting machine according to claim 1, characterized in that: The distance between the rotating shaft (5) at the end of the cutter shaft (12) and the ground is higher than the distance between the front rotating shaft (5) and the ground; the first wheel (90) of the first driving motor (9) and the first driven wheel (8) are linked via a first chain belt (10); the cutter shaft (12) is square; the center notch of the cutter (22) is square; and the outer end of the cutter (22) is circular as a whole.

10. The sugarcane cutting machine according to claim 1, characterized in that: The second driving motor (15) is mounted on the vertical beam (2) at the end, and the second wheel (16) of the second driving motor (15) and the second driven wheel (17) are linked via a second chain belt (18), and the second driven wheel (17) is sleeved on one end of the knife shaft (12), and both ends of the knife shaft (12) are provided with a flywheel (26).

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