Production process of glutinous rice yellow cake

Abstract

The present invention discloses a glutinous rice yellow cake production process, and belongs to the technical field of food production processes, and the glutinous rice yellow cake comprises 16 components of glutinous rice; 3, sticky rice; the component 1 comprises soybeans; and 1 component of brown sugar. According to the yellow rice cake cutting device, a traditional yellow rice cake cutting method is changed, the yellow rice cake is cut through the thin cutting steel rope, the cutting steel rope is synchronously stretched through the electric telescopic rod to cut the yellow rice cake, the conditions of incomplete cutting and adhesion of the yellow rice cake are avoided in the treatment mode, and meanwhile due to the fact that the yellow rice cake is synchronously cut from the two sides of the yellow rice cake, the cutting efficiency is improved. According to the yellow rice cake cutting device, the cutting speed is higher compared with that of cutter cutting, the yellow rice cakes are evenly stressed, the cut yellow rice cakes can be prevented from being stuck again, the yellow rice cakes are prevented from deforming, in addition, the main material conveying belt and the auxiliary material conveying belt are obliquely arranged, and the inclination angles of the two sets of conveying belts are different, so that the cutting speed is high. The cut yellow rice cakes can be automatically turned over after being conveyed to the auxiliary material conveying belt from the main material conveying belt.

Description

Technical Field

[0001] The invention belongs to the technical field of food production technology, and specifically relates to a production process of glutinous rice yellow cake. Background Art

[0002] The existing technology also has the following deficiencies: the existing Huangba production process needs to shape and slice a large number of Huangba after the Huangba is made, so as to facilitate subsequent packaging. The existing slicing method is mostly cutting by a knife. Since the overall temperature of the Huangba is high shortly after the production is completed, and the texture is sticky, when the knife is cutting, the Huangba debris will adhere to the surface of the knife, resulting in the subsequent Huangba segmentation being affected;

[0003] In addition, when transporting the divided Huangba, since only one surface of Huangba contacts the conveyor belt surface and the heat dissipation of the contact surface is definitely inferior to that of other surfaces, this leads to uneven temperature distribution on the surface of Huangba. During the transportation of Huangba, the overall shape of Huangba is very easy to deform, resulting in inconvenience in subsequent packaging. Summary of the invention

[0004] In order to overcome the above defects, the present invention provides a production process of glutinous rice yellow cake, which solves the problems in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solution: a process for making glutinous rice yellow cake, comprising:

[0006] 16 components of glutinous rice;

[0007] 3-component sticky rice;

[0008] 1 component of soybean;

[0009] 1 ingredient brown sugar.

[0010] A production process of glutinous rice yellow cake comprises the following steps:

[0011] S1, soaking glutinous rice, sticky rice and soybeans in water for at least 4 hours to allow them to fully absorb water;

[0012] S2, grinding the soaked glutinous rice and soybean into slurry for later use;

[0013] S3, steaming the glutinous rice;

[0014] S4, mixing the glutinous rice slurry and soybean slurry with the cooked glutinous rice, and adding brown sugar in multiple times during the mixing process;

[0015] S5, the mixed rice ball is put into a slicer for slicing, and then the sliced ​​yellow cake is packaged.

[0016] As a further solution of the present invention: the slicer in S5 comprises a main body shell, two arc-shaped positioning blocks are fixedly connected in the main body shell, a wire control tooth ring is rotatably connected between the two arc-shaped positioning blocks, a pair of first threading holes and a pair of second threading holes are opened on the wire control tooth ring, and a fixing seat is fixedly connected to the inner wall of both sides of the main body shell, an electric telescopic rod is fixedly connected to the fixing seat, a connecting plate is fixedly connected to the output end of the electric telescopic rod, two cutting steel cables are fixedly connected between the two connecting plates, and the two cutting steel cables are both located in the first threading holes;

[0017] A clamping seat is fixedly connected in the main body shell, a feeding cylinder is fixedly connected in the clamping seat, and a cutting mechanism and an anti-sticking mechanism are arranged in the main body shell;

[0018] The cutting mechanism includes two matching plates fixedly connected to the inner wall of the main shell, two guide wheels are rotatably connected to the matching plates, and a rotating seat is fixedly connected to the inner walls on both sides of the main shell corresponding to the matching plate positions. A matching gear is provided on the rotating seat, and the matching gear is fixedly connected to the rotating shaft of the rotating seat through a torsion spring. A wire taking-up groove is opened in the middle of the matching gear, and a traction wire is fixedly connected in the wire taking-up groove of the matching gear. The traction wire is movably connected to the two guide wheels on the corresponding side, and the traction wire, with one end away from the matching gear, passes through the second wire threading port on the corresponding side and is fixedly connected to the cutting steel cable on the corresponding side.

[0019] As a further solution of the present invention: the anti-sticking mechanism includes a cold air plate fixedly connected to the main shell, the two mating gears are both provided with a one-way bearing, and the two mating gears are respectively provided with a pressurizing cylinder and a linkage box.

[0020] As a further solution of the present invention: the pressure cylinder and the linkage box are both fixed to the main shell through a bracket, a piston is slidably connected inside the pressure cylinder, a reciprocating threaded rod is rotatably connected inside the pressure cylinder, the piston is penetrated by the reciprocating threaded rod and the two are threadedly connected, the output end of the pressure cylinder and the input end of the cold air plate are connected by a hose, the rotating shaft of the reciprocating threaded rod penetrates the pressure cylinder and is fixedly connected to the output end of the one-way bearing on the corresponding side.

[0021] As a further solution of the present invention: a driving bevel gear is rotatably connected inside the linkage box, a driven bevel gear is rotatably connected on the inner wall of the linkage box, the driving bevel gear and the driven bevel gear are meshed with each other, and one side of the linkage box is rotatably connected to a No. 1 pulley, the rotating shaft of the No. 1 pulley passes through the linkage box and is coaxially fixedly connected to the driven bevel gear.

[0022] As a further solution of the present invention: a main material conveyor belt and an auxiliary material conveyor belt are arranged in the main shell, and the main material conveyor belt and the auxiliary material conveyor belt are both arranged obliquely, and a second pulley is coaxially fixedly connected to a driving roller in the main material conveyor belt, and a belt is sleeved between the first pulley and the second pulley.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention changes the traditional yellow cake cutting method, cuts the yellow cake through a thinner cutting steel cable, and cuts the yellow cake by synchronously stretching the cutting steel cable through an electric telescopic rod. The control line tooth ring cooperates with the matching gear to synchronously slightly adjust the angle of the cutting steel cable to ensure complete cutting. This processing method will not cause incomplete cutting and adhesion of the yellow cake. At the same time, since the yellow cake is cut synchronously from both sides, the cutting time is faster than that of the knife cutting. Moreover, since the yellow cake is subjected to uniform force, the cut yellow cake can be prevented from sticking again and deformation can be prevented.

[0025] By setting up an anti-sticking mechanism, the power of the rotation of two matching gears is used to drive the reciprocating threaded rod and the active bevel gear to rotate, thereby realizing the transportation of cold air and the driving of the main material conveyor belt. The overall structure of the device is more compact. After the low-temperature cold air enters the pressurized cylinder and is conveyed to the cold air plate after being pressurized, the cold air plate cools the side of the uncut yellow cake. At the same time, after cutting, when the yellow cake falls on the main material conveyor belt, the cold air plate can cool the high-temperature cut surface again. This can ensure that the outer skin of the yellow cake is cooled to a low temperature, avoid the yellow cake from being broken and deformed during transportation, and facilitate subsequent packaging.

[0026] In addition, since the main material conveyor belt and the auxiliary material conveyor belt in the present invention are both inclined, the inclination angles of the two sets of conveyor belts are very different. After the cut Huangba is transferred from the main material conveyor belt to the auxiliary material conveyor belt, it can be automatically turned over, which can balance the heat dissipation time of the two sides of the Huangba and make the temperature of the surface of the Huangba more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the three-dimensional internal structure of the present invention;

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of the wire control tooth ring part of the present invention;

[0030] Figure 4 It is a three-dimensional structural schematic diagram of the pressurizing cylinder part of the present invention;

[0031] Figure 5It is a three-dimensional structural schematic diagram of the linkage box part of the present invention;

[0032] Figure 6 It is a three-dimensional structural schematic diagram of the main material conveyor belt part of the present invention;

[0033] Figure 7 It is a schematic diagram of the process of the present invention.

[0034] In the figure: 1 main body shell, 2 arc positioning block, 3 control wire tooth ring, 4 first threading port, 5 second threading port, 6 fixed seat, 7 electric telescopic rod, 8 connecting plate, 9 cutting steel cable, 10 clamping seat, 11 feeding cylinder, 12 matching plate, 13 guide wheel, 14 rotating seat, 15 matching gear, 16 traction line, 17 cold air plate, 18 pressurizing cylinder, 19 linkage box, 20 piston, 21 reciprocating threaded rod, 22 driving bevel gear, 23 driven bevel gear, 24 No. 1 pulley, 25 main material conveyor belt, 26 auxiliary material conveyor belt, 27 No. 2 pulley. DETAILED DESCRIPTION

[0035] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0036] Embodiment 1

[0037] The present invention provides a technical solution:

[0038] A production process of glutinous rice yellow cake comprises the following components:

[0039] 16 components of glutinous rice;

[0040] 3-component sticky rice;

[0041] 1 component of soybean;

[0042] 1 ingredient brown sugar.

[0043] Embodiment 2

[0044] like Figure 7 As shown, based on the first embodiment, the present invention provides a process for making glutinous rice yellow cake, comprising the following steps:

[0045] S1, soaking glutinous rice, sticky rice and soybeans in water for at least 4 hours to allow them to fully absorb water;

[0046] S2, grinding the soaked glutinous rice and soybean into slurry for later use;

[0047] S3, steaming the glutinous rice;

[0048] S4, mixing the glutinous rice slurry and soybean slurry with the cooked glutinous rice, and adding brown sugar in multiple times during the mixing process;

[0049] S5, the mixed rice ball is put into a slicer for slicing, and then the sliced ​​yellow cake is packaged.

[0050] Embodiment 3

[0051] like Figure 1-Figure 6 As shown, based on the first and second embodiments, the present invention provides a technical solution:

[0052] The slicer in S5 comprises a main body shell 1, two arc-shaped positioning blocks 2 are fixedly connected in the main body shell 1, a wire control tooth ring 3 is rotatably connected between the two arc-shaped positioning blocks 2, a pair of first threading holes 4 and a pair of second threading holes 5 are opened on the wire control tooth ring 3, the inner walls of both ends of the first threading holes 4 and the second threading holes 5 are chamfered and have smooth surfaces, a fixing seat 6 is fixedly connected to the inner walls of both sides of the main body shell 1, an electric telescopic rod 7 is fixedly connected to the fixing seat 6, a connecting plate 8 is fixedly connected to the output end of the electric telescopic rod 7, two cutting steel cables 9 are fixedly connected between the two connecting plates 8, the two cutting steel cables 9 are both located in the first threading holes 4, and the distance between the two cutting steel cables 9 is small;

[0053] A clamping seat 10 is fixedly connected inside the main shell 1, and a feeding tube 11 is fixedly connected inside the clamping seat 10. The feeding tube 11 contains yellow rice cakes and ensures that the yellow rice cakes are compact as a whole. A cutting mechanism and an anti-sticking mechanism are arranged inside the main shell 1;

[0054] The cutting mechanism includes two matching plates 12 fixedly connected to the inner wall of the main shell 1, and two guide wheels 13 are rotatably connected to the matching plates 12. Rotating seats 14 are fixedly connected to the positions corresponding to the matching plates 12 on the inner walls of both sides of the main shell 1, and matching gears 15 are arranged on the rotating seats 14. The matching gears 15 are fixedly connected to the rotating shafts of the rotating seats 14 through torsion springs. A wire take-up groove is provided in the middle of the matching gear 15, and a traction wire 16 is fixedly connected in the wire take-up groove of the matching gear 15. The traction wire 16 is movably connected to the two guide wheels 13 on the corresponding side. After the end of the traction wire 16 away from the matching gear 15 passes through the second threading port 5 on the corresponding side, it is fixedly connected to the cutting steel cable 9 on the corresponding side. The cutting mechanism can slice the yellow cake. When slicing is actually performed, the yellow cake in the feeding barrel 11 is squeezed out, and the two electric The movable telescopic rod 7 contracts synchronously, the two cutting cables 9 are stretched, the traction line 16 on the cutting cables 9 is pulled, and the spacing between the two cutting cables 9 is reduced to be parallel to each other, so that the yellow cake can be preliminarily cut. At the same time, when the electric telescopic rod 7 controls the cutting cables 9, due to the movement of the traction line 16, through the guidance of the guide wheel 13, the matching gear 15 will rotate a certain angle under the action of the torsion spring, and release the traction line 16 wound in the wire winding groove. Since the matching gear 15 is meshed with the wire control tooth ring 3, the wire control tooth ring 3 will of course also rotate a certain angle synchronously. Then, the two cutting cables 9 rotate synchronously to achieve complete cutting. After the cutting is completed, the electric telescopic rod 7 is reset to the initial position. Due to the setting of the torsion spring, the matching gear 15 reverses, returns to the initial angle, and winds up the traction line 16.

[0055] Compared with traditional knife cutting, the cutting effect achieved by the shredder mechanism will not cause incomplete cutting and sticking of the yellow cake. At the same time, due to synchronous cutting from both sides of the yellow cake, the cutting time is faster than that of knife cutting. Moreover, since the force on the yellow cake is evenly applied, it can prevent the yellow cake from sticking again after cutting and prevent the yellow cake from deforming.

[0056] The anti-sticking mechanism includes a cold air plate 17 fixedly connected to the main body shell 1, one-way bearings are arranged on the two mating gears 15, a pressurizing cylinder 18 and a linkage box 19 are arranged on the two mating gears 15, and the pressurizing cylinder 18 and the linkage box 19 are fixed to the main body shell 1 through a bracket, a piston 20 is slidably connected in the pressurizing cylinder 18, a reciprocating threaded rod 21 is rotatably connected in the pressurizing cylinder 18, the piston 20 is penetrated by the reciprocating threaded rod 21 and the two are threadedly connected, and the output end of the pressurizing cylinder 18 is connected to the input end of the cold air plate 17 through a hose The shaft of the reciprocating threaded rod 21 passes through the pressure cylinder 18 and is fixedly connected to the output end of the one-way bearing on the corresponding side. A driving bevel gear 22 is rotatably connected in the linkage box 19. A driven bevel gear 23 is rotatably connected on the inner wall of the linkage box 19. The driving bevel gear 22 and the driven bevel gear 23 are meshed with each other. One side of the linkage box 19 is rotatably connected to a first pulley 24. The shaft of the first pulley 24 passes through the linkage box 19 and is coaxially fixedly connected to the driven bevel gear 23. A main material conveyor belt 25 and an auxiliary material conveyor belt 26 are arranged in the main housing 1. The main material conveyor belt 25 and the auxiliary material conveyor belt 26 are both inclined. A second pulley 27 is coaxially fixedly connected to a driving roller in the main material conveyor belt 25. A belt is sleeved between the first pulley 24 and the second pulley 27. When the two matching gears 15 rotate, the reciprocating threaded rod 21 and the active bevel gear 22 in the linkage box 19 will rotate through the connection of the one-way bearing. When the reciprocating threaded rod 21 rotates, the piston 20 threadedly connected thereto will move in the pressurizing cylinder 18. The input end of the pressurizing cylinder 18 needs to be connected to the air conditioner. Interface, the movement of the piston 20 can press the cold air in the pressurized cylinder 18 into the cold air plate 17. Of course, the input and output ends of the pressurized cylinder 18 must be connected to a one-way valve to control the flow direction and prevent the cold air from flowing back. The cold air plate 17 cools the side of the uncut yellow cake. At the same time, after cutting, the yellow cake falls on the main material conveyor belt, and the cold air plate 17 can cool the high-temperature cut surface again, which can ensure that the outer skin of the yellow cake is cooled to a low temperature, and the viscosity of the yellow cake will be reduced, so as to avoid the yellow cake from being broken and deformed during transportation, which is convenient for subsequent packaging;

[0057] The rotation of the active bevel gear 22 in the linkage box 19 will cause the driven bevel gear 23 meshing with it to rotate, thereby causing the No. 1 pulley 24 to rotate. Through the connection of the belt, the No. 2 pulley 27 also rotates accordingly, and the main material conveyor belt can then feed the material. The main material conveyor belt and the auxiliary material conveyor belt in the invention are both inclined, and the inclination angles of the two sets of conveyor belts are very different. After the cut yellow cake is transferred from the main material conveyor belt to the auxiliary material conveyor belt, it can be automatically turned over, which can balance the heat dissipation time of the two sides of the yellow cake, making the temperature of the surface of the yellow cake more uniform.

[0058] The working principle of the present invention is:

[0059] The cutting mechanism can slice the yellow cake. When slicing is actually performed, the yellow cake in the feeding barrel 11 is squeezed out, the two electric telescopic rods 7 are contracted synchronously, the two cutting cables 9 are stretched, the traction wire 16 on the cutting cables 9 is pulled, and the spacing between the two cutting cables 9 is reduced to be parallel to each other, so that the yellow cake can be preliminarily cut. At the same time, when the electric telescopic rod 7 controls the cutting cables 9, due to the movement of the traction wire 16, through the guidance of the guide wheel 13, the matching gear 15 will rotate a certain angle under the action of the torsion spring, and release the traction wire 16 wound in the wire winding groove. Since the matching gear 15 is meshed with the wire control tooth ring 3, the wire control tooth ring 3 will of course also rotate a certain angle synchronously. Then the two cutting cables 9 rotate synchronously to achieve complete cutting. After cutting, the electric telescopic rod 7 is reset to the initial position. Due to the setting of the torsion spring, the matching gear 15 reverses, returns to the initial angle, and winds up the traction wire 16.

[0060] Compared with traditional knife cutting, the cutting effect achieved by the shredder mechanism will not cause incomplete cutting and sticking of the yellow cake. At the same time, due to synchronous cutting from both sides of the yellow cake, the cutting time is faster than that of knife cutting. Moreover, since the force on the yellow cake is evenly applied, it can prevent the yellow cake from sticking again after cutting and prevent the yellow cake from deforming.

[0061] When the two matching gears 15 rotate, the reciprocating threaded rod 21 and the active bevel gear 22 in the linkage box 19 will rotate through the connection of the one-way bearing. When the reciprocating threaded rod 21 rotates, the piston 20 threadedly connected thereto will move in the pressurizing cylinder 18. The input end of the pressurizing cylinder 18 needs to be connected to the cold air interface. The movement of the piston 20 can press the cold air in the pressurizing cylinder 18 into the cold air plate 17. Of course, the input and output ends of the pressurizing cylinder 18 must be connected to a one-way valve to control the flow direction and avoid the backflow of cold air. The cold air plate 17 cools the side of the uncut yellow cake. At the same time, after cutting, when the yellow cake falls on the main material conveyor belt, the cold air plate 17 can cool the high-temperature cut surface again, which can ensure that the outer skin of the yellow cake is cooled to a low temperature, and the viscosity of the yellow cake will be reduced, so as to avoid the yellow cake from being broken and deformed during transportation, which is convenient for subsequent packaging.

[0062] The rotation of the active bevel gear 22 in the linkage box 19 will cause the driven bevel gear 23 meshing with it to rotate, thereby causing the No. 1 pulley 24 to rotate. Through the connection of the belt, the No. 2 pulley 27 also rotates accordingly, and the main material conveyor belt can then feed the material. The main material conveyor belt and the auxiliary material conveyor belt in the invention are both inclined, and the inclination angles of the two sets of conveyor belts are very different. After the cut yellow cake is transferred from the main material conveyor belt to the auxiliary material conveyor belt, it can be automatically turned over, which can balance the heat dissipation time of the two sides of the yellow cake, making the temperature of the surface of the yellow cake more uniform.

[0063] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A process for making glutinous rice yellow cake, characterized in that: Includes the following components: 16 components of glutinous rice; 3-component sticky rice; 1 component of soybean; 1 ingredient brown sugar.

2. The process for making glutinous rice yellow cake according to claim 1, characterized in that: The production process mainly includes the following steps: S1, soaking glutinous rice, sticky rice and soybeans in water for at least 4 hours to allow them to fully absorb water; S2, grinding the soaked glutinous rice and soybean into slurry for later use; S3, steaming the glutinous rice; S4, mixing the glutinous rice slurry and soybean slurry with the cooked glutinous rice, and adding brown sugar in multiple times during the mixing process; S5, the mixed rice ball is put into a slicer for slicing, and then the sliced ​​yellow cake is packaged.

3. The process for making glutinous rice yellow cake according to claim 2, characterized in that: The slicer in S5 comprises a main body shell (1), two arc-shaped positioning blocks (2) are fixedly connected inside the main body shell (1), a wire control tooth ring (3) is rotatably connected between the two arc-shaped positioning blocks (2), a pair of first threading openings (4) and a pair of second threading openings (5) are provided on the wire control tooth ring (3), a fixing seat (6) is fixedly connected to the inner walls on both sides of the main body shell (1), an electric telescopic rod (7) is fixedly connected to the fixing seat (6), a connecting plate (8) is fixedly connected to the output end of the electric telescopic rod (7), two cutting steel cables (9) are fixedly connected between the two connecting plates (8), and the two cutting steel cables (9) are both located in the first threading opening (4); A clamping seat (10) is fixedly connected inside the main body shell (1), a feeding cylinder (11) is fixedly connected inside the clamping seat (10), and a cutting mechanism and an anti-sticking mechanism are arranged inside the main body shell (1); The cutting mechanism comprises two matching plates (12) fixedly connected to the inner wall of the main shell (1), two guide wheels (13) being rotatably connected to the matching plates (12), a rotating seat (14) being fixedly connected to the positions of the matching plates (12) on the inner walls on both sides of the main shell (1), a matching gear (15) being arranged on the rotating seat (14), the matching gear (15) being fixedly connected to the rotating shaft of the rotating seat (14) through a torsion spring, a wire taking-up groove being provided in the middle of the matching gear (15), a traction wire (16) being fixedly connected in the wire taking-up groove of the matching gear (15), the traction wire (16) being movably connected to the two guide wheels (13) on the corresponding side, and the traction wire (16) having one end away from the matching gear (15) passing through the second wire threading port (5) on the corresponding side and being fixedly connected to the cutting wire (9) on the corresponding side.

4. The process for making glutinous rice yellow cake according to claim 3, characterized in that: The anti-sticking mechanism comprises a cold air plate (17) fixedly connected to the main shell (1), and the two mating gears (15) are both provided with a one-way bearing, and the two mating gears (15) are respectively provided with a pressurizing cylinder (18) and a linkage box (19).

5. The process for making glutinous rice yellow cake according to claim 4, characterized in that: The pressurizing cylinder (18) and the linkage box (19) are both fixed to the main shell (1) through a bracket, a piston (20) is slidably connected inside the pressurizing cylinder (18), a reciprocating threaded rod (21) is rotatably connected inside the pressurizing cylinder (18), the piston (20) is penetrated by the reciprocating threaded rod (21) and the two are threadedly connected, the output end of the pressurizing cylinder (18) and the input end of the cold air plate (17) are connected by a hose, and the rotating shaft of the reciprocating threaded rod (21) penetrates the pressurizing cylinder (18) and is fixedly connected to the output end of the one-way bearing on the corresponding side.

6. The process for making glutinous rice yellow cake according to claim 5, characterized in that: A driving bevel gear (22) is rotatably connected inside the linkage box (19), and a driven bevel gear (23) is rotatably connected on the inner wall of the linkage box (19). The driving bevel gear (22) and the driven bevel gear (23) are meshed with each other. A first belt pulley (24) is rotatably connected to one side of the linkage box (19), and the rotating shaft of the first belt pulley (24) passes through the linkage box (19) and is coaxially fixedly connected to the driven bevel gear (23).

7. The process for making glutinous rice yellow cake according to claim 6, characterized in that: A main material conveyor belt (25) and an auxiliary material conveyor belt (26) are arranged in the main housing (1); the main material conveyor belt (25) and the auxiliary material conveyor belt (26) are both arranged obliquely; a driving roller in the main material conveyor belt (25) is coaxially fixedly connected to a second belt pulley (27); and a belt is sleeved between the first belt pulley (24) and the second belt pulley (27).

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