Wormwood bath bag crushing device

Abstract

The utility model relates to the technical field of wormwood bath bag production and treatment devices, and discloses a wormwood bath bag crushing device which comprises an upper box body, a double-head motor is fixedly connected to the left side of the upper portion of the upper box body, and one output end of the double-head motor is fixedly connected with a main rotating rod. And the other output end of the double-end motor is fixedly connected with a main gear, an auxiliary rotating rod is arranged behind the main rotating rod, and the outer wall of the main rotating rod is fixedly connected with a plurality of crushing main cutters. According to the wormwood crushing device, the double-end motor, the main gear, the auxiliary gear, the main rotating rod, the auxiliary rotating rod, the crushing main cutter, the crushing auxiliary cutter, the main belt wheel, the auxiliary belt wheel, the synchronous belt, the shaft rod and the cross-shaped rod are matched, so that wormwood needing to be crushed can be cut and crushed into uniform and appropriate sizes and is scattered; and through cooperation of a screening outlet, a motor, a rotating disc, a rod block, a screening plate, a connecting rod and a limiting block, the crushed wormwood is screened.

Description

Technical Field

[0001] The utility model relates to the technical field of wormwood bath bag production and processing devices, in particular to a wormwood bath bag crushing device. Background Art

[0002] Mugwort bath refers to a method of bathing with mugwort decoction to drive away the cold and remove toxins. Mugwort has a fragrant smell and interesting shapes and colors. It is only natural that it has become a must-have for the Dragon Boat Festival. Bathing in mugwort water has also become an important activity of the ancient Dragon Boat Festival. Since ancient times, the Chinese people have had the custom of hanging mugwort leaves, hanging calamus, sprinkling realgar, and taking mugwort baths on the fifth day of May. In particular, in many areas, newborns and postpartum women also have to bathe in mugwort water. These customs have been passed down to modern times. Mugwort sterilizes and disinfects, purifies the air, and plays a good role in preventing the spread of diseases. With the improvement of people's living standards, they pay more attention to health preservation in daily life. More and more people take mugwort baths, so the demand for mugwort bath bags is increasing. When making mugwort bath bags, it is often necessary to crush the whole plant of mugwort first, so that it can be packaged into bath bags of suitable size later, which is also conducive to subsequent use. Therefore, a mugwort bath bag crushing device is introduced.

[0003] Currently, most of the ways to crush mugwort on the market are to use a grinder or a manually controlled guillotine for cutting. The grinder will crush the mugwort excessively, and the subsequent mugwort powder may clump, which is not conducive to subsequent packaging and use. The mugwort powder may also scatter through the bath bag, causing waste. The powder residue scattered during use will also affect people's experience. Manual operation cannot control the degree of mugwort crushing well, resulting in mugwort fragments of different sizes, which is not conducive to the subsequent production of bath bags. Manually operated guillotine also has the risk of accidental injury to employees. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a mugwort bath bag crushing device, which aims to improve the problem that the grinder will crush the mugwort excessively, and the subsequent mugwort powder may clump, which is not conducive to subsequent packaging and use. The mugwort powder may also scatter through the bath bag, causing waste. The powder residue scattered during use will also affect people's usage experience. Manual operation cannot control the degree of mugwort crushing well, resulting in different sizes of mugwort fragments, which is not conducive to the subsequent production of bath bags. Manual operation of the guillotine also has the risk of accidental injury to employees, and no screening is performed during crushing, which will cause the mugwort to be sometimes not crushed thoroughly, and the mugwort fragments are large, which is not conducive to subsequent packaging and use.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a mugwort bath bag crushing device, comprising an upper box body, a double-headed motor is fixedly connected to the upper left side of the upper box body, one of the output ends of the double-headed motor is fixedly connected to the main rotating rod, the other output end of the double-headed motor is fixedly connected to the main gear, a secondary rotating rod is arranged behind the main rotating rod, a plurality of main crushing knives are fixedly connected to the outer wall of the main rotating rod, a plurality of secondary crushing knives are fixedly connected to the outer wall of the secondary rotating rod, one end of the secondary rotating rod is fixedly connected to the secondary gear, and the main gear and the secondary gear are meshed with each other.

[0006] As a further description of the above technical solution:

[0007] The plurality of main crushing knives are evenly distributed on the outer wall of the main rotating rod, the plurality of auxiliary crushing knives are evenly distributed on the outer wall of the auxiliary rotating rod, the main crushing knives and the auxiliary crushing knives are staggered, the main rotating rod and the auxiliary rotating rod are both rotatably connected to the upper end of the upper box body, and the main gear and the auxiliary gear are both arranged on the outside of the upper box body.

[0008] As a further description of the above technical solution:

[0009] The end of the secondary rotating rod close to the secondary gear is fixedly connected to the main pulley on the outside, the lower end of the upper box is rotatably connected to the inside of the shaft rod, one end of the shaft rod is fixedly connected to the secondary pulley, the main pulley and the outer side of the secondary pulley are connected by a synchronous belt, and the outer side of the shaft rod is fixedly connected to a plurality of cross rods.

[0010] As a further description of the above technical solution:

[0011] The plurality of cross rods are evenly distributed on the outside of the shaft rod, the primary pulley is arranged between the upper housing and the secondary gear, and the secondary pulley is arranged outside the upper housing.

[0012] As a further description of the above technical solution:

[0013] The lower side of the upper box body is fixedly connected to the lower box body, and a sieve plate is slidably connected to the inner part of the upper end of the lower box body. A connecting rod is fixedly connected to the middle part of the rear side of the sieve plate, and one end of the connecting rod away from the sieve plate is fixedly connected to a limiting block. A motor is fixedly connected to the middle part of the rear side of the lower box body, and a turntable is fixedly connected to the output end of the motor. A rod block is fixedly connected to the top of the turntable, and the rod block is arranged in the middle part of the limit block.

[0014] As a further description of the above technical solution:

[0015] The left and right inner walls of the lower box body are both provided with slide grooves, the left and right ends of the screen plate are respectively arranged in the middle of the two slide grooves, the connecting rod is slidably connected to the middle of the upper end of the rear side of the lower box body, and the rod block is fixedly connected to the non-center point position of the turntable.

[0016] As a further description of the above technical solution:

[0017] A sieve outlet is arranged on the front side of the lower box body, the front end of the sieve plate is arranged in the middle of the sieve outlet, the rear end position of the sieve plate is higher than the front end position of the sieve plate, and a material storage drawer is slidably connected to the inner bottom of the lower box body, the material storage drawer is arranged below the sieve plate, and a handle is fixedly connected to one side of the material storage drawer.

[0018] As a further description of the above technical solution:

[0019] The top of the upper box body is fixedly connected to a feed hopper, and the feed hopper is arranged on the upper side of the top opening. The left side of the upper box body is fixedly connected to a protective shell, and the double-headed motor, main gear and sub-gear, as well as the sub-pulley and synchronous belt are all arranged inside the protective shell. The rear side of the lower box body is fixedly connected to a protective box, and the motor, turntable and rod block, and limit block are all arranged inside the protective box.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, a double-headed motor, a main gear, a sub-gear, a main rotating rod, a sub-rotating rod, a main crushing knife, a sub-crushing knife, a main pulley, a sub-pulley, a synchronous belt, a shaft rod and a cross rod cooperate to cut and crush the wormwood to be crushed by the main crushing knife and the sub-crushing knife, and cut the wormwood to be crushed into relatively uniform and suitable sizes. The crushed wormwood falls down and is broken up by the rotating cross rod when passing through the cross rod, thereby improving the problem that the crushing opportunity will crush the wormwood excessively, and the subsequent wormwood powder may clump, which is not conducive to subsequent packaging and use. The wormwood powder may also scatter through the bath bag, causing waste. The powder residue scattered during use will also affect people's experience of use. Manual operation cannot well control the degree of wormwood crushing, resulting in different sizes of wormwood fragments, which is not conducive to the subsequent production of bath bags. The risk of accidental injury to employees due to manual operation of the guillotine is also avoided.

[0022] 2. In the utility model, the sieve outlet, motor, turntable, rod block, sieve plate, connecting rod and limit block cooperate, the crushed wormwood falls on the sieve plate, the motor drives the turntable to rotate, so that the rod block on the turntable rotates with the turntable and slides in the middle of the limit block, thereby driving the connecting rod to slide in the middle of the upper end of the rear side of the lower box through the limit block, so that the sieve plate slides quickly along the slide groove inside the lower box, so that it has a shaking screening effect, and wormwood pieces larger than the sieve holes of the sieve plate inside the lower box remain above the sieve plate and are screened out through the sieve outlet, which solves the problem that the wormwood is not screened during crushing, which may cause the wormwood to be sometimes not crushed thoroughly and the wormwood pieces to be large, which is not conducive to subsequent packaging and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional schematic diagram of a mugwort bath bag crushing device proposed by the utility model;

[0024] Figure 2 This is a structural schematic diagram of the lower box of a mugwort bath bag crushing device proposed in the utility model;

[0025] Figure 3 This is a schematic structural diagram of a cross bar of a mugwort bath bag crushing device proposed in the utility model;

[0026] Figure 4 This is a structural schematic diagram of a crushing main knife of a mugwort bath bag crushing device proposed in the utility model;

[0027] Figure 5 This is a structural schematic diagram of a chute of a mugwort bath bag crushing device proposed in the utility model;

[0028] Figure 6 This is a schematic diagram of the structure of a sieve plate of a mugwort bath bag crushing device proposed in the utility model;

[0029] Figure 7 The utility model discloses a structural schematic diagram of a material storage drawer of a mugwort bath bag crushing device.

[0030] Legend:

[0031] 1. Upper box; 2. Lower box; 3. Top opening; 4. Double-head motor; 5. Main gear; 6. Sub gear; 7. Main rotating rod; 8. Sub rotating rod; 9. Main crushing knife; 10. Sub crushing knife; 11. Main pulley; 12. Sub pulley; 13. Synchronous belt; 14. Shaft rod; 15. Cross rod; 16. Screen outlet; 17. Slide; 18. Motor; 19. Turntable; 20. Rod block; 21. Screen plate; 22. Connecting rod; 23. Material storage drawer; 24. Feed hopper; 25. Protective shell; 26. Protective box; 27. Limit block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1-7, The utility model provides an embodiment: a mugwort bath bag crushing device, including an upper box body 1, a double-headed motor 4 is fixedly connected to the left side of the upper part of the upper box body 1, one of the output ends of the double-headed motor 4 is fixedly connected to the main rotating rod 7, the other output end of the double-headed motor 4 is fixedly connected to the main gear 5, a secondary rotating rod 8 is arranged behind the main rotating rod 7, a plurality of crushing main knives 9 are fixedly connected to the outer wall of the main rotating rod 7, a plurality of crushing secondary knives 10 are fixedly connected to the outer wall of the secondary rotating rod 8, one end of the secondary rotating rod 8 is fixedly connected to the secondary gear 6, the main gear 5 and the secondary gear 6 are meshed with each other, and the double-headed motor 4 is started, The double-headed motor 4 drives the main rotating rod 7 to rotate, and the crushing main knife 9 rotates with the main rotating rod 7. At the same time, the double-headed motor 4 drives the main gear 5 to rotate. Because the main gear 5 and the sub-gear 6 are meshed with each other, the sub-gear 6 and the main gear 5 rotate in the opposite direction, and then drive the sub-rotating rod 8 to rotate, and the crushing sub-knife 10 rotates with the sub-rotating rod 8, thereby making the crushing sub-knife 10 and the crushing main knife 9 rotate in the opposite direction, and the wormwood to be crushed is put into the upper box body 1 through the feed hopper 24 and the top mouth 3, and falls between the crushing main knife 9 and the crushing sub-knife 10, and is cut and crushed by the crushing main knife 9 and the crushing sub-knife 10.

[0034] A plurality of main crushing knives 9 are evenly distributed on the outer wall of the main rotating rod 7, and a plurality of auxiliary crushing knives 10 are evenly distributed on the outer wall of the auxiliary rotating rod 8. The main crushing knives 9 and the auxiliary crushing knives 10 are staggered. Because the main crushing knives 9 and the auxiliary crushing knives 10 are evenly staggered, the wormwood to be crushed can be cut into a relatively uniform and suitable size. The main rotating rod 7 and the auxiliary rotating rod 8 are both rotatably connected to the upper end of the upper box body 1, and the main gear 5 and the auxiliary gear 6 are both arranged on the outside of the upper box body 1. The end of the auxiliary rotating rod 8 close to the auxiliary gear 6 is fixedly connected to the main pulley 11 on the outside, and the lower end of the upper box body 1 is rotatably connected to the inside of the shaft rod 14, and one end of the shaft rod 14 is fixedly connected to the auxiliary pulley 12. The main pulley 11 is connected to the outer side of the auxiliary pulley 12 through a synchronous belt 13, and the outer side of the shaft rod 14 is fixed. A plurality of cross rods 15 are connected, and the plurality of cross rods 15 are evenly distributed on the outside of the shaft rod 14. Through the main pulley 11, the secondary pulley 12 and the synchronous belt 13, the shaft rod 14 and the secondary rotating rod 8 rotate at the same time. The cross rod 15 rotates together with the shaft rod 14. The broken wormwood falls down and is broken up by the rotating cross rod 15 when passing through the cross rod 15, thereby preventing the broken wormwood from sticking together. The main pulley 11 is arranged between the upper box body 1 and the secondary gear 6, and the secondary pulley 12 is arranged on the outside of the upper box body 1. The lower side of the upper box body 1 is fixedly connected to the lower box body 2, and the upper end of the lower box body 2 is slidably connected to the screen plate 21. The middle part of the rear side of the screen plate 21 is fixedly connected to a connecting rod 22, and the end of the connecting rod 22 away from the screen plate 21 is fixedly connected to a limiting block 27. A motor 18 is fixedly connected to the middle part of the rear side of the lower box body 2, and a turntable 19 is fixedly connected to the output end of the motor 18. A rod block 20 is fixedly connected to the top of the turntable 19, and the rod block 20 is arranged in the middle part of the limit block 27. The left and right inner walls of the lower box body 2 are provided with slide grooves 17, and the left and right ends of the sieve plate 21 are respectively arranged in the middle part of the two slide grooves 17. This structure facilitates the sieve plate 21 to slide within a specific range. The connecting rod 22 is slidably connected to the middle part of the upper end of the rear side of the lower box body 2, and the rod block 20 is fixedly connected to the non-center point position of the turntable 19. A sieve outlet 16 is provided on the front side of the lower box body 2, and the front end of the sieve plate 21 is arranged in the middle part of the sieve outlet 16. The crushed and scattered wormwood falls on the sieve plate 21. At this time, the motor 18 is started, so that the motor 18 drives The turntable 19 rotates, causing the rod block 20 on the turntable 19 to rotate together with the turntable 19 and slide in the middle of the limit block 27, thereby driving the connecting rod 22 to slide in the middle of the upper end of the rear side of the lower box body 2 through the limit block 27, so that the sieve plate 21 slides quickly along the slide groove 17 inside the lower box body 2, so that it has a shaking screening effect, and wormwood blocks larger than the sieve holes of the sieve plate 21 inside the lower box body 2 remain above the sieve plate 21 and are screened out through the sieve outlet 16. The rear end position of the sieve plate 21 is higher than the front end position of the sieve plate 21. This structure facilitates the screening of wormwood blocks larger than the sieve holes of the sieve plate 21 inside the lower box body 2 through the sieve outlet 16. The inner bottom of the lower box body 2 is slidably connected with a storage drawer 23, which is arranged below the sieve plate 21, and a handle is fixedly connected to one side of the storage drawer 23.The wormwood pieces that have been crushed to a standard size are sieved and fall into the storage drawer 23. After screening, the storage drawer 23 can be pulled out by the handle to take out the wormwood that meets the standard. A feed hopper 24 is fixedly connected to the top of the upper box body 1. The feed hopper 24 is arranged on the upper side of the top opening 3. The feed hopper 24 makes it more convenient to add the required crushed wormwood into the device. A protective shell 25 is fixedly connected to the left side of the upper box body 1. The double-headed motor 4, the main gear 5 and the sub-gear 6, as well as the sub-pulley 12 and the synchronous belt 13 are all arranged inside the protective shell 25. The protective shell 25 is convenient for protecting the double-headed motor 4 , main gear 5 and sub-gear 6, as well as sub-pulley 12 and synchronous belt 13, to prevent the double-headed motor 4, main gear 5 and sub-gear 6, as well as sub-pulley 12 and synchronous belt 13 from being damaged due to accidental collision from the outside. A protective box 26 is fixedly connected to the rear side of the lower box body 2. The motor 18, turntable 19, rod block 20, and limit block 27 are all arranged inside the protective box 26. The protective box 26 is convenient for protecting the motor 18, turntable 19, rod block 20, and limit block 27, to prevent the motor 18, turntable 19, rod block 20, and limit block 27 from being damaged due to external erosion. ,

[0035] Working principle: Before using the equipment, place the equipment in the required position, start the double-headed motor 4, so that the double-headed motor 4 drives the main rotating rod 7 to rotate, and the crushing main knife 9 rotates with the main rotating rod 7. At the same time, the double-headed motor 4 drives the main gear 5 to rotate. Because the main gear 5 and the auxiliary gear 6 are meshed with each other, the auxiliary gear 6 rotates in the opposite direction to the main gear 5, and then drives the auxiliary rotating rod 8 to rotate, and the crushing auxiliary knife 10 rotates with the auxiliary rotating rod 8, thereby making the crushing auxiliary knife 10 and the crushing main knife 9 rotate in the opposite direction, through the main pulley 11, the auxiliary pulley 12 and the synchronous belt 13, the shaft rod 14 and the auxiliary rotating rod 8 rotate at the same time, and the cross rod 1 As the shaft 14 rotates, the wormwood to be crushed is put into the upper box body 1 through the hopper 24 and the top opening 3, and falls between the crushing main knife 9 and the crushing auxiliary knife 10. The crushing main knife 9 and the crushing auxiliary knife 10 cut and crush it. Because the crushing main knife 9 and the crushing auxiliary knife 10 are evenly staggered, the wormwood to be crushed can be cut and crushed into a relatively uniform and suitable size, and then falls. When passing through the cross rod 15, it is broken up by the rotating cross rod 15, thereby avoiding the crushed wormwood from sticking and agglomerating, improving the crushing opportunity to crush the wormwood excessively, and the subsequent wormwood powder may be agglomerated, which is not conducive to During subsequent packaging and use, the wormwood powder may also scatter through the bath bag, causing waste. The powder residue scattered during use will also affect people's experience of use. Manual operation cannot well control the degree of wormwood crushing, resulting in wormwood fragments of different sizes, which is not conducive to the subsequent production of bath bags. It also avoids the risk of accidental injury to employees caused by manual operation of the guillotine. The crushed wormwood falls on the sieve plate 21. At this time, the motor 18 is started, so that the motor 18 drives the turntable 19 to rotate, so that the rod block 20 on the turntable 19 rotates with the turntable 19 and slides in the middle of the limit block 27, thereby passing through the limit block 27. The connecting rod 22 is driven to slide in the middle of the upper end of the rear side of the lower box body 2, so that the screen plate 21 slides quickly along the slide groove 17 inside the lower box body 2, so that it has a shaking screening effect. Mugwort blocks larger than the screen holes of the screen plate 21 inside the lower box body 2 remain above the screen plate 21 and are screened out through the screen outlet 16, which solves the problem that the mugwort is not screened during crushing, which sometimes causes the mugwort to be not crushed thoroughly and the mugwort pieces to be large, which is not conducive to subsequent packaging and use. The mugwort blocks crushed to a standard size are screened into the storage drawer 23. After screening, the storage drawer 23 can be pulled out by the handle to take out the mugwort that meets the standard.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mugwort bath bag crushing device, comprising an upper box (1), characterized in that: A double-headed motor (4) is fixedly connected to the left upper part of the upper box body (1); one of the output ends of the double-headed motor (4) is fixedly connected to a main rotating rod (7); the other output end of the double-headed motor (4) is fixedly connected to a main gear (5); a secondary rotating rod (8) is arranged behind the main rotating rod (7); a plurality of main crushing knives (9) are fixedly connected to the outer wall of the main rotating rod (7); a plurality of secondary crushing knives (10) are fixedly connected to the outer wall of the secondary rotating rod (8); one end of the secondary rotating rod (8) is fixedly connected to a secondary gear (6); the main gear (5) and the secondary gear (6) are meshed with each other.

2. The wormwood bath bag crushing device according to claim 1, characterized in that: The plurality of main crushing knives (9) are evenly distributed on the outer wall of the main rotating rod (7), and the plurality of auxiliary crushing knives (10) are evenly distributed on the outer wall of the auxiliary rotating rod (8). The main crushing knives (9) and the auxiliary crushing knives (10) are staggeredly distributed. The main rotating rod (7) and the auxiliary rotating rod (8) are both rotatably connected to the interior of the upper end of the upper box body (1), and the main gear (5) and the auxiliary gear (6) are both arranged outside the upper box body (1).

3. The wormwood bath bag crushing device according to claim 1, characterized in that: The end of the secondary rotating rod (8) close to the secondary gear (6) is externally fixedly connected to a main pulley (11); the lower end of the upper box body (1) is internally rotatably connected to a shaft rod (14); one end of the shaft rod (14) is fixedly connected to a secondary pulley (12); the main pulley (11) and the outer side of the secondary pulley (12) are connected via a synchronous belt (13); and the outer side of the shaft rod (14) is fixedly connected to a plurality of cross rods (15).

4. The wormwood bath bag crushing device according to claim 3, characterized in that: The plurality of cross rods (15) are evenly distributed on the outside of the shaft rod (14); the primary pulley (11) is arranged between the upper housing (1) and the secondary gear (6); and the secondary pulley (12) is arranged outside the upper housing (1).

5. The wormwood bath bag crushing device according to claim 1, characterized in that: The lower side of the upper box body (1) is fixedly connected to the lower box body (2), the upper end of the lower box body (2) is slidably connected to a sieve plate (21), the middle part of the rear side of the sieve plate (21) is fixedly connected to a connecting rod (22), one end of the connecting rod (22) away from the sieve plate (21) is fixedly connected to a limiting block (27), the middle part of the rear side of the lower box body (2) is fixedly connected to an electric motor (18), the output end of the electric motor (18) is fixedly connected to a rotating disk (19), the top of the rotating disk (19) is fixedly connected to a rod block (20), and the rod block (20) is arranged in the middle of the limiting block (27).

6. The wormwood bath bag crushing device according to claim 5, characterized in that: The inner walls on the left and right sides of the lower box body (2) are both provided with slide grooves (17), the left and right ends of the screen plate (21) are respectively arranged in the middle of the two slide grooves (17), the connecting rod (22) is slidably connected to the middle of the upper end of the rear side of the lower box body (2), and the rod block (20) is fixedly connected to a non-center point position of the turntable (19).

7. The wormwood bath bag crushing device according to claim 5, characterized in that: A sieve outlet (16) is arranged at the front side of the lower box body (2), the front end of the sieve plate (21) is arranged at the middle of the sieve outlet (16), the rear end of the sieve plate (21) is higher than the front end of the sieve plate (21), and a material storage drawer (23) is slidably connected to the inner bottom of the lower box body (2), the material storage drawer (23) is arranged below the sieve plate (21), and a handle is fixedly connected to one side of the material storage drawer (23).

8. The wormwood bath bag crushing device according to claim 5, characterized in that: The top of the upper box body (1) is fixedly connected to a feed hopper (24), and the feed hopper (24) is arranged on the upper side of the top opening (3). The left side of the upper box body (1) is fixedly connected to a protective shell (25), and the double-headed motor (4), the main gear (5) and the auxiliary gear (6), as well as the auxiliary pulley (12) and the synchronous belt (13) are all arranged inside the protective shell (25). The rear side of the lower box body (2) is fixedly connected to a protective box (26), and the motor (18), the turntable (19) and the rod block (20), as well as the limit block (27) are all arranged inside the protective box (26).

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