Disinfecting and killing device for funeral car

Abstract

The utility model discloses a funeral car disinfecting and killing device which comprises a car body, a remains cabin is arranged in the car body, a partition plate is arranged in the remains cabin, a box body is arranged in the remains cabin, a driving mechanism is arranged in the box body, and a linkage mechanism is arranged in the driving mechanism. According to the funeral with the hidden disinfection and sterilization tool, air in the remains cabin is movably purified through communicating pipes on the left side and the right side of the funeral, so that the disinfection and sterilization effect is better, and the disinfection and sterilization range is larger; and the side surface of the seat is hidden in the seat, so that the use of the remains cabin is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of disinfection of funeral vehicles, and specifically to a disinfection device for funeral vehicles. Background Art

[0002] A funeral car is also called a funeral transport car, a body transport car, a cremation car, etc. It is an indispensable part of the process from death to cremation, and plays a very important role in the funeral industry. A funeral car is mainly composed of a front cabin and a rear cabin. The front cabin is generally a passenger cabin, mostly with double rows of seats, mainly used by relatives, and the rear cabin is a body cabin with stainless steel interior, stainless steel long seats on both sides with lockers and tool boxes, a normal temperature coffin or an ice coffin is placed in the middle, and a stainless steel partition with sliding windows in the middle;

[0003] The existing Chinese patent publication number is: CN203154221U, which provides a funeral car with a refrigeration system, including a car, a vertical partition is fixed in the car compartment to separate the front and rear of the car compartment into a driver's cab and a sealed body compartment; a refrigerator is fixed in the body compartment, and the cabinet wall of the refrigerator is a three-layer composite layer structure, from the inside to the outside, a stainless steel plate layer, a polyurethane foam insulation layer, and a steel plate layer, and a refrigeration system for reducing the temperature of the refrigerator is fixedly installed next to the refrigerator. The utility model fixes a refrigerator equipped with a refrigeration system in the funeral car, so that the body can be refrigerated during the transportation of the body, and the body can be transported in hot weather and / or over long distances;

[0004] Although the above-mentioned funeral car can refrigerate the body when in use and can transport the body in hot weather and over long distances, there are still the following problems when in use: there is no cleaning mechanism inside the above-mentioned funeral car, so when the inside of the body compartment needs to be cleaned, the staff needs to hold a high-pressure water gun and fold the inside of the body compartment to spray water for cleaning. This cleaning efficiency is low, and the staff holding the water gun for flushing may increase the workload. At the same time, the high-pressure water gun has impact force, which is inconvenient for the staff to take. Secondly, there is no air purification and disinfection mechanism inside the above-mentioned funeral car, which may cause the air in the body compartment to be attached with more germs, which has a bad effect on the health of the staff and the driver and passengers. Utility Model Content

[0005] The purpose of the present invention is to provide a disinfection device for a funeral car to solve the problem that the above-mentioned background technology proposes that the interior of the above-mentioned funeral car is not equipped with a cleaning mechanism. In this way, when the interior of the body compartment needs to be cleaned, the staff needs to hold a high-pressure water gun and fold the interior of the body compartment to spray water for cleaning. The cleaning efficiency is low, and the staff holding the water gun for flushing may increase the workload. At the same time, the high-pressure water gun has impact force, which is inconvenient for the staff to take. Secondly, the interior of the above-mentioned funeral car is not equipped with an air purification and disinfection mechanism, which may cause the air in the body compartment to be attached with more germs, which will have a bad effect on the health of the staff and the driver and passengers.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a disinfection device for a funeral car, comprising a car body, a body cabin being arranged inside the car body, and a partition being arranged inside the body cabin, a box being arranged inside the body cabin, and a driving mechanism being arranged inside the box, and a linkage mechanism being arranged inside the driving mechanism, a cleaning mechanism being connected inside the linkage mechanism, a seat being arranged inside the body cabin, and an air purification mechanism being arranged inside the seat.

[0007] Preferably, the box body comprises a water tank, a cavity and a water inlet, and the water inlet is arranged outside the water tank, and the driving mechanism, the linkage mechanism and the cleaning mechanism are arranged inside the cavity.

[0008] Preferably, the driving mechanism includes a motor, a driving shaft, a first gear and a second gear, and the output end of the motor is connected to the driving shaft, and the outer wall of the driving shaft is connected to the first gear, the left side of the first gear is meshed with the second gear, and the inner ring of the second gear is also provided with a tooth block, and the inner ring of the second gear is provided with a linkage mechanism.

[0009] Preferably, the linkage mechanism includes a first support rod, a slide groove, a second support rod, a third gear and a fourth gear, and the first support rod and the second support rod are connected through the left and right sides of the second gear, and the two ends of the first support rod and the second support rod can move in the slide grooves at the upper and lower positions respectively, and the slide groove is annular.

[0010] Preferably, the third gear and the fourth gear are both meshed with the tooth blocks of the inner ring of the second gear, and a cleaning mechanism is inserted and connected in the middle position inside the third gear and the fourth gear, and the third gear and the fourth gear are symmetrically arranged, and multiple third gears are arranged at equal angles on the second gear, and a cleaning mechanism is inserted and connected in the middle position inside each third gear.

[0011] Preferably, the cleaning mechanism includes a first water outlet pipe, a second water outlet pipe, a third water outlet pipe, a first belt and a water pump, and the outer wall of the first water outlet pipe is connected to the third gear, and the outer wall of the third water outlet pipe is connected to the fourth gear, the tops of the first water outlet pipe, the second water outlet pipe and the third water outlet pipe are all connected to the water pump, and the bottoms of the first water outlet pipe, the second water outlet pipe and the third water outlet pipe are all connected to nozzles, and the second water outlet pipe is arranged in the middle position inside the water tank, the first belt is connected to the external pulley of the second water outlet pipe, and the other end of the first belt is connected to the external pulley of the third water outlet pipe, the first water outlet pipe and the third water outlet pipe are symmetrically arranged, and the first water outlet pipe is connected to the middle position inside each of the third gears.

[0012] Preferably, the air purification mechanism includes an air purifier, a connecting pipe, a protrusion, a movable groove, a connecting block, a limit block, a limit groove, a motor, a rotating shaft, a second belt and a driven shaft, and the outside of the air purifier is connected to a connecting pipe, and the connecting pipe is a metal hose, the outside of the connecting pipe is connected to two symmetrical protrusions, and the protrusions and the connecting pipe can move inside the strip-shaped movable groove inside the seat.

[0013] Preferably, the output end of the motor is connected to a rotating shaft, and a section of thread is provided on the outer wall of the rotating shaft, and the outer wall of the rotating shaft is threadedly connected to a connecting block, the upper end of the connecting block is connected to the outer wall of the connecting pipe, and the lower end of the connecting block is connected to a limiting block, and the limiting block can move inside the limiting groove, a second belt is connected to the pulley on the outer wall of the rotating shaft, and the other end of the second belt is connected to the pulley outside the driven shaft, and the driven shaft and the rotating shaft are symmetrically arranged.

[0014] Compared with the prior art, the beneficial effects of this invention are:

[0015] 1. Connect an external water source to the water inlet, and water is sprayed out through the nozzles connected to the lower ends of the first water outlet pipe, the second water outlet pipe, and the third water outlet pipe. The sprayed water cleans the surface of the body cabin, and at the same time, the motor is started to drive the first gear connected to the outer wall of the drive shaft to rotate, which in turn drives the second gear meshing with it to rotate, so that the gear block of its inner ring rotates, and then the third gear and the fourth gear meshing with it rotate, so that the water of the first water outlet pipe and the third water outlet pipe is driven to rotate and spray out, so that the radiation range of the spray is larger, and the water sprayed from the nozzle has a certain pressure, so that The sprayed water is used to clean the inside of the body cabin, and the surface of the body cabin is made of stainless steel, so the water flow cleaning will not affect its subsequent use. When the third water outlet pipe rotates under the drive of the first belt, the second water outlet pipe will also be driven to rotate, so that multiple groups of water outlet pipes can rotate to spray water to clean the inside of the body cabin, so the cleaning effect is better. When disinfectant is added to the cleaning water, the disinfection effect can be achieved. In this way, there is no need for staff to hold a high-pressure water gun to clean the inside of the body cabin, which is more convenient. The water outlet pipe is arranged at the top, and it does not affect the use of the body cabin when not in use.

[0016] 2. Start the air purifier and the motor at the same time. The motor drives the rotating shaft to rotate. The forward and reverse rotation of the motor drives the connecting block to move back and forth on the outer wall of the rotating shaft, so that the connecting pipe connected to the connecting block moves inside the movable groove. The connecting pipe is a metal hose with a certain toughness and length. In this way, the connecting pipe can purify the air inside the body cabin in a movable manner, and the purification effect is better. Similarly, the above operation steps will also drive the connecting pipe on the right side to purify the air inside the body cabin in a movable manner during the rotation of the driven shaft. In this way, the disinfection effect is better and the range is larger. Moreover, it is on the side of the seat, so it is hidden inside the seat and does not affect the use of the body cabin. It is very practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is a top cross-sectional view of the utility model;

[0019] Figure 3 It is a right side cross-sectional view of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the driving mechanism, linkage mechanism and cleaning mechanism in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the slideway in the utility model;

[0022] Figure 6 For this utility model Figure 3A schematic diagram of the structure enlargement in the middle;

[0023] Figure 7 For this utility model Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0024] Figure 8 For this utility model Figure 2 Enlarged schematic diagram of the structure at point C in the middle.

[0025] In the figure: 1, vehicle body; 2, body compartment; 3, partition; 4, seat; 5, box; 501, water tank; 502, cavity; 503, water inlet; 6, driving mechanism; 601, motor; 602, driving shaft; 603, first gear; 604, second gear; 7, linkage mechanism; 701, first support rod; 702, slide; 703, second support rod; 704, third gear; 705, fourth gear; 8, cleaning Mechanism; 801, first water outlet pipe; 802, second water outlet pipe; 803, third water outlet pipe; 804, first belt; 805, water pump; 9, air purification mechanism; 901, air purifier; 902, connecting pipe; 903, protrusion; 904, movable groove; 905, connecting block; 906, limit block; 907, limit groove; 908, motor; 909, rotating shaft; 910, second belt; 911, driven shaft. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the practical embodiment to clearly and completely describe the technical solution in the practical embodiment. Obviously, the described embodiment is only a part of the embodiment of the practical embodiment, not all of the embodiments. Based on the embodiment in the practical embodiment, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this practical embodiment.

[0027] See also Figure 1-8 The utility model provides a technical solution: a funeral car disinfection device, including a body 1, a body cabin 2 is arranged inside the body 1, and a partition 3 is arranged inside the body cabin 2, a box 5 is arranged inside the body cabin 2, and a driving mechanism 6 is arranged inside the box 5, and a linkage mechanism 7 is arranged inside the driving mechanism 6, a cleaning mechanism 8 is connected to the linkage mechanism 7, a seat 4 is arranged inside the body cabin 2, and an air purification mechanism 9 is arranged inside the seat 4.

[0028] The housing 5 includes a water tank 501, a cavity 502 and a water inlet 503, and the water inlet 503 is arranged outside the water tank 501, and a driving mechanism 6, a linkage mechanism 7 and a cleaning mechanism 8 are arranged inside the cavity 502, so that the driving mechanism 6 can drive the linkage mechanism 7 and the cleaning mechanism 8 to move.

[0029] The driving mechanism 6 includes a motor 601, a driving shaft 602, a first gear 603 and a second gear 604, and the output end of the motor 601 is connected to the driving shaft 602, and the outer wall of the driving shaft 602 is connected to the first gear 603, the left side of the first gear 603 is meshed with the second gear 604, and the inner ring of the second gear 604 is also provided with a tooth block, and the inner ring of the second gear 604 is provided with a linkage mechanism 7 to facilitate driving the linkage mechanism 7 to rotate.

[0030] The linkage mechanism 7 includes a first support rod 701, a slide groove 702, a second support rod 703, a third gear 704 and a fourth gear 705, and the first support rod 701 and the second support rod 703 are connected through the left and right sides of the second gear 604, and the two ends of the first support rod 701 and the second support rod 703 can move in the slide grooves 702 at the upper and lower positions respectively, and the slide groove 702 is annular to facilitate supporting the rotation of the second gear 604.

[0031] The third gear 704 and the fourth gear 705 are both meshed with the tooth blocks on the inner ring of the second gear 604, and a cleaning mechanism 8 is inserted and connected in the middle position inside the third gear 704 and the fourth gear 705, and the third gear 704 and the fourth gear 705 are symmetrically arranged, and multiple third gears 704 are arranged at equal angles to the second gear 604, and a cleaning mechanism 8 is inserted and connected in the middle position inside each third gear 704, so as to drive multiple groups of cleaning mechanisms 8 to rotate to clean the inside of the body chamber 2.

[0032] The cleaning mechanism 8 includes a first water outlet pipe 801, a second water outlet pipe 802, a third water outlet pipe 803, a first belt 804 and a water pump 805, and the outer wall of the first water outlet pipe 801 is connected to the third gear 704, and the outer wall of the third water outlet pipe 803 is connected to the fourth gear 705, the tops of the first water outlet pipe 801, the second water outlet pipe 802 and the third water outlet pipe 803 are all connected to the water pump 805, and the bottoms of the first water outlet pipe 801, the second water outlet pipe 802 and the third water outlet pipe 803 are connected to the third gear 704, and the outer wall of the third water outlet pipe 803 is connected to the fourth gear 705. They are all connected with a nozzle, and the second water outlet pipe 802 is arranged in the middle position inside the water tank 501, the first belt 804 is connected to the pulley outside the second water outlet pipe 802, and the other end of the first belt 804 is connected to the pulley outside the third water outlet pipe 803, the first water outlet pipe 801 and the third water outlet pipe 803 are symmetrically arranged, and the first water outlet pipe 801 is connected to the middle position inside each third gear 704, so that multiple water outlet pipes can spray water to clean the inside of the body cabin 2.

[0033] The air purification mechanism 9 includes an air purifier 901, a connecting pipe 902, a protrusion 903, a movable groove 904, a connecting block 905, a limit block 906, a limit groove 907, a motor 908, a rotating shaft 909, a second belt 910 and a driven shaft 911, and the outside of the air purifier 901 is connected to the connecting pipe 902, and the connecting pipe 902 is a metal hose, and the outside of the connecting pipe 902 is connected to two symmetrical protrusions 903, and the protrusion 903 and the connecting pipe 902 can move inside the strip movable groove 904 inside the seat 4, thereby driving the connecting pipe 902 to move and purify the air inside the body cabin 2.

[0034] The output end of the motor 908 is connected to a rotating shaft 909, and a section of thread is provided on the outer wall of the rotating shaft 909, and the outer wall of the rotating shaft 909 is threadedly connected to a connecting block 905, the upper end of the connecting block 905 is connected to the outer wall of the connecting pipe 902, and the lower end of the connecting block 905 is connected to a limiting block 906, and the limiting block 906 can move inside the limiting groove 907, and a second belt 910 is connected to the pulley on the outer wall of the rotating shaft 909, and the other end of the second belt 910 is connected to the pulley outside the driven shaft 911, and the driven shaft 911 and the rotating shaft 909 are symmetrically arranged, which will drive the connecting pipes 902 on both sides to move and purify the air inside the body cabin 2.

[0035] Working principle: When using the funeral car with hidden disinfection and sterilization tools, first when it is necessary to clean and disinfect the body compartment 2 inside the car body 1, it is only necessary to connect the water source with the water inlet 503, so that under the action of the water pump 805, the water source will be introduced into the first water outlet pipe 801, the second water outlet pipe 802 and the third water outlet pipe 803, and then sprayed out through the nozzles connected to the lower ends of the first water outlet pipe 801, the second water outlet pipe 802 and the third water outlet pipe 803, so that the sprayed water cleans the surface of the body compartment 2; at the same time, the motor 601 is started, and the motor 6 01 drives the rotation of the driving shaft 602 connected to the output end, which in turn drives the rotation of the first gear 603 connected to the outer wall of the driving shaft 602, and the first gear 603 meshes with the tooth block on the outer ring of the second gear 604, which in turn drives the second gear 604 to rotate, and the inner ring of the second gear 604 is also provided with a tooth block, and the tooth block on the inner ring of the second gear 604 is meshed with a plurality of third gears 704 and fourth gears 705 arranged at the same degree, so that the rotation of the second gear 604 drives the tooth block on the inner ring to rotate, which drives the third gear 704 and the fourth gear 705 meshed therewith. The rotation of the gear 705 will drive the rotation of the first water outlet pipe 801 and the third water outlet pipe 803 which are connected in the middle of the third gear 704 and the fourth gear 705, so that the water in the first water outlet pipe 801 and the third water outlet pipe 803 is sprayed out through the nozzle, and the spraying is carried out in a rotating manner, so that the radiation range of the spraying is larger, and the water sprayed from the nozzle has a certain pressure, so that the sprayed water cleans the inside of the body cabin 2, and the surface of the body cabin 2 is made of stainless steel, so the cleaning of the water flow will not affect its subsequent use; in the third outlet pipe 801, the water in the third water outlet pipe 803 is sprayed out through the nozzle, and the water in the third water outlet pipe 803 is sprayed out in a rotating manner, so that the radiation range of the spraying is larger, and the water sprayed from the nozzle has a certain pressure, so that the sprayed water cleans the inside of the body cabin 2, and the surface of the body cabin 2 is made of stainless steel, so the cleaning of the water flow will not affect its subsequent use; During the rotation of the water pipe 803, because the first belt 804 is connected to the pulley on the outer wall of the third water outlet pipe 803, and the other end of the first belt 804 is connected to the pulley on the outer wall of the second water outlet pipe 802, the rotation of the third water outlet pipe 803 will also drive the rotation of the second water outlet pipe 802, so that multiple groups of water outlet pipes 802 can rotate to spray water to clean the inside of the body cabin 2, so that the cleaning effect is better. Afterwards, the staff only needs to air-dry the inside of the body cabin 2, and at the same time, adding disinfectant to the cleaning water can achieve the effect of disinfection;When it is necessary to purify the air inside the body cabin 2, it is only necessary to start the air purifier 901 and the motor 908 at the same time. The motor 908 drives the rotating shaft 909 connected to the output end to rotate, and the external thread of the rotating shaft 909 is connected to the connecting block 905, and the outer end of the connecting block 905 is connected to the limiting block 906, and the limiting block 906 moves inside the limiting groove 907, so that when the rotating shaft 909 rotates, it will drive the connecting block 905 to move at the thread of the outer wall of the rotating shaft 909, and the forward and reverse rotation of the motor 908 drives the connecting block 905 to reciprocate on the outer wall of the rotating shaft 909. When the connecting block 905 moves, it will drive the connecting pipe 902 connected to the connecting block 905 to move inside the movable groove 904, and the connecting pipe 902 is a metal hose, which has a certain toughness and a certain length (in FIG. In order to make the picture coordinated, the length of the connecting pipe 902 is not shown), so that the connecting pipe 902 can purify the air inside the body cabin 2 in a mobile manner, so that the purification effect is better; at the same time, a second belt 910 is connected to the pulley on the outer wall of the rotating shaft 909, and the other end of the second belt 910 is connected to the pulley outside the driven shaft 911, so that when the rotating shaft 909 rotates, the driven shaft 911 will also be driven to rotate. Similarly, in the above operation steps, the connecting pipe 902 on the right side will be driven to purify the air inside the body cabin 2 in a mobile manner during the rotation of the driven shaft 911 (the process of air purification by the air purifier 901 is an existing and relatively mature technology, which will not be described in detail here). The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field. ;

[0036] 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 funeral car disinfection device, comprising a car body (1), characterized in that: A body cabin (2) is arranged inside the vehicle body (1), and a partition (3) is arranged inside the body cabin (2); a box (5) is arranged inside the body cabin (2), and a driving mechanism (6) is arranged inside the box (5); a linkage mechanism (7) is arranged inside the driving mechanism (6), and a cleaning mechanism (8) is connected to the linkage mechanism (7); a seat (4) is arranged inside the body cabin (2), and an air purification mechanism (9) is arranged inside the seat (4); The box body (5) comprises a water tank (501), a cavity (502) and a water inlet (503), wherein the water inlet (503) is arranged outside the water tank (501), and a driving mechanism (6), a linkage mechanism (7) and a cleaning mechanism (8) are arranged inside the cavity (502).

2. A funeral car disinfection device according to claim 1, characterized in that: The driving mechanism (6) comprises a motor (601), a driving shaft (602), a first gear (603) and a second gear (604), wherein the output end of the motor (601) is connected to the driving shaft (602), and the outer wall of the driving shaft (602) is connected to the first gear (603), the left side of the first gear (603) is meshed with the second gear (604), and the inner ring of the second gear (604) is also provided with a tooth block, and the inner ring of the second gear (604) is provided with a linkage mechanism (7).

3. A funeral car disinfection device according to claim 1, characterized in that: The linkage mechanism (7) comprises a first support rod (701), a slide groove (702), a second support rod (703), a third gear (704) and a fourth gear (705), and the first support rod (701) and the second support rod (703) are connected through the left and right sides of the second gear (604), and the two ends of the first support rod (701) and the second support rod (703) can move in the slide grooves (702) at the upper and lower positions respectively, and the slide grooves (702) are annular.

4. A funeral car disinfection device according to claim 3, characterized in that: The third gear (704) and the fourth gear (705) are both meshed with the tooth blocks on the inner ring of the second gear (604), and a cleaning mechanism (8) is inserted and connected at the middle position inside the third gear (704) and the fourth gear (705), and the third gear (704) and the fourth gear (705) are symmetrically arranged, and a plurality of third gears (704) are arranged at equal angles on the second gear (604), and a cleaning mechanism (8) is inserted and connected at the middle position inside each third gear (704).

5. A funeral car disinfection device according to claim 1, characterized in that: The cleaning mechanism (8) comprises a first water outlet pipe (801), a second water outlet pipe (802), a third water outlet pipe (803), a first belt (804) and a water pump (805), wherein the outer wall of the first water outlet pipe (801) is connected to a third gear (704), and the outer wall of the third water outlet pipe (803) is connected to a fourth gear (705), the tops of the first water outlet pipe (801), the second water outlet pipe (802) and the third water outlet pipe (803) are all connected to the water pump (805), and the first water outlet pipe (801), the second water outlet pipe (802) and the third water outlet pipe (803) are connected to the third gear (704). The bottoms of the first water outlet pipe (801) and the third water outlet pipe (803) are both connected to nozzles, and the second water outlet pipe (802) is arranged at the middle position inside the water tank (501), the first belt (804) is connected to the pulley outside the second water outlet pipe (802), and the other end of the first belt (804) is connected to the pulley outside the third water outlet pipe (803), the first water outlet pipe (801) and the third water outlet pipe (803) are symmetrically arranged, and the first water outlet pipe (801) is connected to the middle position inside each of the third gears (704).

6. A funeral car disinfection device according to claim 1, characterized in that: The air purification mechanism (9) comprises an air purifier (901), a connecting pipe (902), a protrusion (903), a movable groove (904), a connecting block (905), a limiting block (906), a limiting groove (907), a motor (908), a rotating shaft (909), a second belt (910) and a driven shaft (911), and the outside of the air purifier (901) is connected to the connecting pipe (902), and the connecting pipe (902) is a metal hose, and the outside of the connecting pipe (902) is connected to two symmetrical protrusions (903), and the protrusions (903) and the connecting pipe (902) can move inside the strip-shaped movable groove (904) inside the seat (4).

7. A funeral car disinfection device according to claim 6, characterized in that: The output end of the motor (908) is connected to a rotating shaft (909), and the outer wall of the rotating shaft (909) is provided with a section of thread, and the outer wall of the rotating shaft (909) is threadedly connected to a connecting block (905), the upper end of the connecting block (905) is connected to the outer wall of the connecting pipe (902), and the lower end of the connecting block (905) is connected to a limiting block (906), and the limiting block (906) can move inside the limiting groove (907), and the pulley on the outer wall of the rotating shaft (909) is connected to a second belt (910), and the other end of the second belt (910) is connected to a pulley outside the driven shaft (911), and the driven shaft (911) and the rotating shaft (909) are symmetrically arranged.

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