Automatic bagging, sealing and bag replacing device applied to motor sweeper

Abstract

The automatic bagging, sealing and bag replacing device comprises a garbage can and a sealing mechanism, a throwing opening is formed in the top of the garbage can, the sealing mechanism comprises a driving assembly, the driving assembly comprises a driving part and a synchronous belt which are installed at the top of the garbage can, and the driving part is in driving connection with the synchronous belt; the clamping assembly comprises a first clamping piece and a second clamping piece, the first clamping piece is fixed to the top of the dustbin and located at one end of the synchronous belt, and the second clamping piece is located over the throwing opening; the compensation assembly comprises a compensation mounting plate, a guide column and a first spring, the compensation mounting plate is connected with the synchronous belt, one end of the guide column is slidably connected with the compensation mounting plate, the other end of the guide column is fixedly connected with the second clamping piece, and the first spring is mounted between the second clamping piece and the compensation mounting plate. According to the arrangement, stable clamping and good folding of the garbage bag opening can be guaranteed, deformation and damage of the garbage bag are avoided, and the success rate of garbage bag sealing operation is increased.

Description

Technical Field

[0001] The invention relates to the technical field of garbage disposal, and in particular to an automatic bag filling, sealing and bag changing device applied to a sweeper. Background Art

[0002] With the development of technology, some designs have appeared on the market that attempt to integrate the automatic garbage packaging function on the sweeper, but none of them have been commercialized. The main reason is that these designs have many problems, among which the poor compatibility with garbage types is particularly prominent. Urban road garbage is complex and diverse, with different shapes, sizes and textures.

[0003] Existing garbage bag sealing and clamping structures mostly adopt simple mechanical structures, and use rigid clamps to clamp and close the opening of the garbage bag. However, the size and clamping force of the rigid clamp are fixed. When encountering garbage with irregular shapes or special textures, the rigid clamp is difficult to adjust according to the shape and texture of the garbage, resulting in poor clamping and closing effects on the opening of the garbage bag, which may cause deformation or damage to the garbage bag, thereby affecting the subsequent sealing operation, making it difficult to successfully complete the automatic garbage bagging and sealing operation. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention proposes an automatic bag filling, sealing and bag changing device for use in a garbage bag sweeper, which can ensure the firm clamping and good folding of the garbage bag opening, avoid deformation and damage of the garbage bag, and improve the success rate of the garbage bag sealing operation.

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

[0006] An automatic bagging, sealing and bag changing device for a sweeper comprises a garbage bin and a sealing mechanism. A loading port is provided on the top of the garbage bin. The sealing mechanism comprises:

[0007] A driving assembly, the driving assembly comprising a driving member and a synchronous belt installed on the top of the trash bin, the driving member and the synchronous belt being drivingly connected;

[0008] A clamping assembly, the clamping assembly comprising a first clamp and a second clamp, the first clamp being fixed to the top of the trash bin and located on one side of the synchronous belt, and the second clamp being located just above the delivery port;

[0009] A compensation component, the compensation component includes a compensation mounting plate, a guide column and a first spring, the compensation mounting plate is connected to the synchronous belt, one end of the guide column is slidably connected to the compensation mounting plate, the other end of the guide column is fixedly connected to the second clamp, and the first spring is installed between the second clamp and the compensation mounting plate.

[0010] Preferably, the guide column includes a movable end and a limiting end, the compensating mounting plate is provided with a movable hole, the movable end is slidably connected to the movable hole, the limiting end is installed with a gasket and a nut, and when the first spring is in a natural state, the gasket abuts against the nut and one end of the movable end respectively.

[0011] Preferably, an oil-free bushing is installed in the movable hole, and the movable end is slidably connected to the oil-free bushing.

[0012] Preferably, a retaining spring is fixedly provided on the side wall of the guide column close to the second clamp, and the first spring is arranged around the outer wall of the guide column, one end of the first spring abuts against the retaining spring, and the other end of the first spring abuts against the compensation mounting plate.

[0013] Preferably, a plurality of second springs are provided between the compensation mounting plate and the second clamp, one end of the second spring is connected to the compensation mounting plate, and the other end of the second spring is connected to the second clamp.

[0014] Preferably, the compensation mounting plate is mounted with a synchronization plate, a follower mounting block is fixedly arranged at the bottom of the synchronization plate, and a part of the synchronization belt is fixedly arranged between the synchronization plate and the follower mounting block.

[0015] Preferably, the sealing mechanism also includes a guide and limit assembly, which includes a guide block, a first pulley and a second pulley, the guide block is installed on the top of the trash bin, the guide block is provided with a guide groove, the first pulley and the second pulley are both fixed to the follower mounting block, the first pulley is slidably connected to the guide groove, and the second pulley is slidably connected to the side wall of the guide block.

[0016] Preferably, the trash bin comprises a trash hopper body and a trash hopper cover, and the trash hopper cover is hinged to the bottom of the trash hopper body.

[0017] Preferably, it also includes a garbage bag box, which is installed on the top of the sealing mechanism. The garbage hopper cover is provided with a centrifugal fan, which sucks the garbage bags in the garbage bag box into the garbage bin so that the garbage bags are close to the inner wall of the garbage bin.

[0018] Preferably, the garbage hopper body is equipped with a push rod motor, and one end of the push rod of the push rod motor is hinged to the garbage hopper flap.

[0019] By adopting the above technical solution, the present invention has the following beneficial effects:

[0020] When the garbage bag contains garbage of irregular shape or special texture and needs to be sealed, the driving component drives the synchronous belt to move, and the synchronous belt drives the second clamp to approach the first clamp, and the first clamp and the second clamp jointly clamp and close the opening of the garbage bag. The garbage will generate forces of different directions and sizes on the second clamp. Since the first spring is installed between the second clamp and the compensation mounting plate, and one end of the guide column is slidably connected to the compensation mounting plate and the other end is fixedly connected to the second clamp, the first spring will expand and contract according to the force generated by the garbage on the second clamp. Under the guidance of the guide column, the guide column and the second clamp move toward the direction of the compensation mounting plate, so that the second clamp can flexibly adjust the position and clamping force to ensure reliable clamping of the garbage bag opening, thereby improving the compatibility of garbage types and the success rate and reliability of the garbage bag sealing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A three-dimensional diagram of an automatic bag filling, sealing and bag changing device applied to a sweeper according to the present invention;

[0023] Figure 2 A three-dimensional diagram of a garbage bag box removed from an automatic bag filling, sealing and bag changing device for a sweeper according to the present invention;

[0024] Figure 3 A three-dimensional diagram of the internal structure of a sealing mechanism in an automatic bagging, sealing and bag changing device for a sweeper according to the present invention;

[0025] Figure 4 A three-dimensional diagram of a second clamp and a compensation component in an automatic bagging, sealing and bag changing device for a sweeper according to the present invention;

[0026] Figure 5 It is a stereoscopic diagram of a synchronous plate, a follower mounting block, a pulley mounting block, a first pulley and a second pulley in an automatic bagging, sealing and bag changing device for a sweeper according to the present invention;

[0027] Figure ID:

[0028] 1. Trash bin; 11. Trash hopper body; 12. Trash hopper cover; 13. Inlet; 14. Hinge; 15. Photoelectric sensor; 16. Centrifugal fan; 17. Fan guard; 18. Push rod motor; 19. Sealing strip;

[0029] 2. Sealing mechanism; 21. Mounting box; 211. First through hole; 212. Second through hole; 22. Driving assembly; 221. Stepping motor; 222. Reducer; 223. Coupling; 224. Bearing; 225. Bearing seat; 226. Synchronous wheel; 227. Synchronous belt; 231. First clamp; 2311. First heat insulation block; 2312. Heating wire; 232. Second clamp; 2321. Second heat insulation block; 2322. Heat insulation mounting block; 24. Compensation assembly ; 241, compensation mounting plate; 2411, synchronization plate; 2412, follower mounting block; 2413, pulley mounting block; 242, guide column; 2421, movable end; 2422, limit end; 2423, guide mounting seat; 243, first spring; 244, bushing mounting block; 245, retaining spring; 246, second spring; 247, spring fixing column; 248, gasket; 249, nut; 251, guide block; 252, first pulley; 253, second pulley;

[0030] 3. Garbage bag box; DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", "fourth", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] See also Figure 1-Figure 5The present invention provides an automatic bag filling, sealing and bag changing device for a sweeper, which is installed on the sweeper and comprises a garbage bin 1, a sealing mechanism 2 and a garbage bag box 3. The garbage bin 1 is installed on the sweeper, the sealing mechanism 2 is installed on the top of the garbage bin 1, and the garbage bag box 3 is installed on the top of the sealing mechanism 2. The compact layout of each component realizes the integration of the automatic processing flow of garbage bags, reduces space occupation, improves the space utilization rate of the sweeper, makes the overall structure more reasonable, is easy to install and operate on the sweeper, and adapts to the working environment and mobility requirements of the sweeper.

[0035] See also Figure 2 and Figure 3 The sealing mechanism 2 includes an installation box 21, a driving assembly 22, a clamping assembly and a compensation assembly 24. A first through hole 211 is formed at the bottom of the installation box 21, and a delivery port 13 is formed at the top of the trash bin 1. The first through hole 211 and the delivery port 13 are of the same size and are directly opposite to each other. The driving assembly 22, the clamping assembly and the compensation assembly 24 are all installed at the bottom of the installation box 21.

[0036] See also Figure 2 and Figure 3The driving assembly 22 includes a driving member and a synchronous belt 227 installed on the top of the garbage bin 1, and the driving member and the synchronous belt 227 are drivingly connected. Specifically, the driving member includes a stepper motor 221, a reducer 222 and a coupling 223. The stepper motor 221 is installed at the bottom of the installation box 21, the stepper motor 221 is connected to the reducer 222, and the reducer 222 is connected to the coupling 223. The synchronous belt 227 is installed at the bottom of the installation box 21 through two connecting ends, and the connecting end includes a bearing 224, a bearing 224 seat, a synchronous wheel 226, and a driving wheel shaft. The bearing 224 seat is fixed at the bottom of the installation box 21, and the bearing 224, the bearing 224 seat, the synchronous wheel 226, and the driving wheel shaft are installed on the bearing 224 seat to drive the synchronous wheel 226 to move. The coupling 223 is connected to the bearing 224, and the two connecting ends are respectively located at the two ends of the synchronous belt 227. When the driving part is working, the stepper motor 221 starts to rotate and transmits power to the reducer 222. The function of the reducer 222 is to reduce the speed of the stepper motor 221 and increase the torque to meet the speed and torque requirements required for actual work. The power adjusted by the reducer 222 continues to be transmitted to the coupling 223, and the coupling 223, as a connecting component, transmits the power to the bearing 224 connected thereto. Since the bearing 224 is installed in the bearing 224 seat and cooperates with the driving wheel shaft, when the bearing 224 starts to rotate, it drives the driving wheel shaft to rotate accordingly. The rotation of the driving wheel shaft will drive the synchronous wheel 226 to start rotating, and the synchronous belt 227 is sleeved on the synchronous wheel 226, so the rotation of the synchronous wheel 226 will cause the synchronous belt 227 to move accordingly. The synchronous wheel 226 and the synchronous belt 227 at the two connecting ends work together. Through this transmission mode, the power of the driving part is finally transmitted to the synchronous belt 227, driving the synchronous belt 227 to move stably, providing the required power support for subsequent clamping, sealing and other operations.

[0037] See also Figure 3 Furthermore, in this embodiment, two driving members and two synchronous belts 227 are provided, and the synchronous belts 227 are located on both sides of the first through hole 211 along the width direction, and the length direction of the synchronous belts 227 is consistent with the length direction of the first through hole 211. The design of the dual driving members and the dual synchronous belts 227 provides sufficient power and stability, making the clamping and sealing actions more reliable, reducing the probability of failure, and improving the overall performance of the device.

[0038] See also Figure 3 and Figure 4The clamping assembly includes a first clamp 231 and a second clamp 232. The first clamp 231 is fixed to the top of the garbage bin 1 and is located on one side of the synchronous belt 227. The second clamp 232 is located directly above the inlet 13, and the second clamp 232 is connected to the synchronous belt 227. Specifically, the first clamp 231 includes a first heat insulation block 2311 and a heating wire 2312. The first heat insulation block 2311 is installed at the bottom of the installation box 21. The first heat insulation block 2311 is located on one side of the first through hole 211 along the length direction. The heating wire 2312 is arranged on one side of the first heat insulation block 2311 close to the first through hole 211. The combination of the heating wire 2312 of the first clamp 231 and the first heat insulation block 2311 can heat, melt and cut the garbage bag when sealing. At the same time, the first heat insulation block 2311 protects the surrounding components from being affected by high temperature. The second clamp 232 includes a second thermal insulation block 2321 and a thermal insulation mounting block 2322. A thermal insulation mounting groove for mounting the second thermal insulation block 2321 is provided on one side of the thermal insulation mounting block 2322. The second thermal insulation block 2321 protects surrounding components from being affected by high temperature.

[0039] See also Figure 3 and Figure 4 The compensation assembly 24 includes a compensation mounting plate 241, a guide column 242 and a first spring 243. The compensation mounting plate 241 is connected to the synchronous belt 227. One end of the guide column 242 is slidably connected to the compensation mounting plate 241. The other end of the guide column 242 is fixedly connected to the second clamp 232. The first spring 243 is installed between the second clamp 232 and the compensation mounting plate 241. Specifically, one end of the guide column 242 away from the compensation mounting plate 241 is fixedly connected to the heat insulation mounting block 2322 through the guide mounting seat 2423.

[0040] After the sweeper performs garbage collection, the garbage enters the garbage bin 1 equipped with a garbage bag. If the garbage bag needs to be sealed, the stepper motor 221 in the drive assembly 22 is started, and the synchronous belt 227 is driven by the reducer 222, the coupling 223 and other components, and then the compensation mounting plate 241 is driven to move, so that the second clamp 232 approaches the first clamp 231. For garbage with regular shape and uniform texture, such as block or spherical garbage, they are arranged neatly in the garbage bag, and the second clamp 232 is subjected to a single and predictable reaction force, which is mainly a slight pressure in the vertical direction, which does not affect its moving stroke, and can smoothly complete the clamping and sealing operations. However, most urban road garbage is irregular in shape or special in texture, such as long, curved, sharp or soft and deformable garbage. When the second clamp 232 contacts the garbage bag mouth of such garbage, it will be subjected to forces of different directions and sizes. Long strips of garbage will generate horizontal lateral force, heavier or piled garbage will generate greater downward pressure, and sharp garbage will generate oblique force, which will cause uneven force on the second clamp 232, affecting its normal movement and position. The first spring 243 is installed between the second clamp 232 and the compensation mounting plate 241, one end of the guide column 242 is slidably connected to the compensation mounting plate 241, and the other end is fixed to the second clamp 232. When the second clamp 232 is subjected to the above force, the first spring 243 will be guided by the guide column 242 to expand and contract, and the guide column 242 and the second clamp 232 will move toward the direction of the compensation mounting plate 241, so that the second clamp 232 can flexibly adjust the position and clamping force to adapt to complex situations. Finally, the first clamp 231 and the second clamp 232 clamp and close the garbage bag mouth, and then the electric heating wire 2312 of the first clamp 231 heats and melts the garbage bag mouth and cuts it off to complete the sealing operation. By using the compensation component 24, the compatibility with the types of garbage is improved, deformation and damage of the garbage bag due to the inability to flexibly adjust is avoided, and the success rate and reliability of the sealing operation are improved.

[0041] See also Figure 3 and Figure 4The guide column 242 includes a movable end 2421 and a limiting end 2422. The compensation mounting plate 241 is provided with a movable hole, and the movable end 2421 is slidably connected with the movable hole. The movable end 2421 is located between the compensation mounting plate 241 and the heat insulation mounting block 2322. The limiting end 2422 is located on the side of the compensation mounting plate 241 away from the heat insulation mounting block 2322, and the limiting end 2422 is installed with a gasket 248 and a nut 249; when the first spring 243 is in a natural state, the gasket 248 abuts against the nut 249 and one end of the movable end 2421 respectively; when the garbage acts on the second clamp 232 to compress the spring, the heat insulation mounting block 2322 drives the movable end 2421 to move toward the direction of the compensation mounting plate 241, so that the heat insulation mounting block 2322 is close to the compensation mounting plate 241, and the gasket 248 and the nut 249 are away from the compensation mounting plate 241. The washer 248 and the nut 249 respectively play the role of positioning and limiting the travel of the movable end 2421 in the natural state and the compressed state of the first spring 243.

[0042] Furthermore, an oil-free bushing is installed in the movable hole, and the movable end 2421 is slidably connected to the oil-free bushing. Specifically, a bushing mounting block 244 is installed on one side of the compensation mounting plate 241 close to the nut 249, the oil-free bushing part is embedded in the bushing mounting block 244, and the oil-free bushing part is located in the movable hole, and the diameter of the oil-free bushing is matched with the aperture of the movable hole, and the movable end 2421 is movably connected to the oil-free bushing, and the oil-free bushing reduces component wear and energy loss, and improves the service life and working efficiency of the device.

[0043] A retaining spring 245 is fixedly provided on the side wall of the guide column 242 close to the second clamp 232, and the first spring 243 is arranged around the outer wall of the guide column 242. One end of the first spring 243 abuts against the retaining spring 245, and the other end of the first spring 243 abuts against the compensation mounting plate 241. The retaining spring 245 ensures the normal working position of the spring and ensures the stability of the compensation assembly 24.

[0044] See also Figure 4A plurality of second springs 246 are also provided between the compensation mounting plate 241 and the second clamp 232, one end of the second spring 246 is connected to the compensation mounting plate 241, and the other end of the second spring 246 is connected to the second clamp 232. Specifically, a spring fixing column 247 is fixed to the side where the compensation mounting plate 241 and the heat insulation mounting block 2322 are close to each other, and both ends of the second spring 246 are respectively fixed to the spring fixing columns 247 of the compensation mounting plate 241 and the second clamp 232. When the garbage exerts a large impact force or irregular force on the second clamp 232, the second spring 246 and the first spring 243 work together to share the force and provide additional buffering and compensation. The provision of the second spring 246 enhances the elastic buffering capacity of the compensation assembly 24, enables the clamping assembly to work more stably when facing various complex garbage, reduces the risk of component damage caused by garbage impact, improves the reliability and durability of the device, and further optimizes the clamping effect of the garbage.

[0045] See also Figure 3 and 5 The compensation mounting plate 241 is mounted with a synchronous plate 2411, a follower mounting block 2412 is fixedly mounted at the bottom of the synchronous plate 2411, and a portion of the synchronous belt 227 is fixedly mounted between the synchronous plate 2411 and the follower mounting block 2412. Specifically, the follower mounting block 2412 is fixedly mounted at the bottom of the synchronous plate 2411 by bolts, and a portion of the synchronous belt 227 is located between the synchronous plate 2411 and the follower mounting block 2412. The portion of the synchronous belt 227 is fixedly mounted between the synchronous plate 2411 and the follower mounting block 2412 by the extrusion force and friction force of the synchronous plate 2411 and the follower mounting block 2412. This connection method ensures the synchronous movement of the compensation assembly 24 and the driving assembly 22, reduces the slippage or disconnection phenomenon during the power transmission process, and is also convenient for installation and disassembly.

[0046] See also Figure 3 and 5The sealing mechanism 2 further includes a guide and limit assembly, which includes a guide block 251, a first pulley 252 and a second pulley 253. The guide block 251 is installed on the top of the trash bin 1, that is, the guide block 251 is installed on the bottom of the installation box 21. The guide block 251 is provided with a guide groove. The first pulley 252 and the second pulley 253 are both fixed to the bottom of the follower mounting block 2412 through the pulley mounting block 2413. The first pulley 252 is slidably connected to the guide groove, and the second pulley 253 is slidably connected to the side wall of the guide block 251. Specifically, two first pulleys 252 are provided, the first pulley 252 is installed on the side wall fixed to the follower mounting block 2412, and the second pulley is fixed to the bottom of the follower mounting block 2412. During the operation of the sealing mechanism 2, the follower mounting block 2412 moves with the synchronous belt 227, the first pulley 252 slides in the guide groove of the guide block 251, and the second pulley 253 slides on the side wall of the guide block 251, guiding and limiting the movement of the follower mounting block 2412. The guide and limit assembly accurately limits the movement trajectory of the follower mounting block 2412, preventing it from deflecting or shaking during the movement, ensuring the movement accuracy of the clamping assembly and the compensation assembly 24, improving the accuracy of the garbage bag mouth clamping and sealing operations, reducing operation failures caused by component movement deviations, and improving the overall performance of the device.

[0047] join Figure 1 and Figure 2 The garbage bin 1 includes a garbage hopper body 11 and a garbage hopper cover 12, and the garbage hopper cover 12 is hinged to the bottom of the garbage hopper body 11. Specifically, the garbage hopper cover 12 is hinged to the garbage hopper body 11 through a hinge 14, and the hinge 14 is fixedly installed on the garbage hopper body 11 by bolts, and a sealing strip 19 is installed at the edge where the garbage hopper cover 12 is hinged to the garbage hopper body 11 by a snap-fit ​​method. When the sweeper is working, the garbage hopper cover 12 is connected to the garbage hopper body 11 through the hinge 14, and can be opened and closed to dump garbage. The sealing strip 19 plays a sealing role when the garbage hopper cover 12 is closed, preventing the leakage of garbage odor and dust from flying, and keeping the environment around the sweeper clean.

[0048] join Figure 1 and Figure 2Two groups of photoelectric sensors 15 are installed on the outer surface of the garbage hopper body 11, and the two groups of photoelectric sensors 15 are used to detect the presence of garbage bags and the presence of garbage bags respectively. The garbage hopper flap 12 is provided with a centrifugal fan 16, and the centrifugal fan 16 sucks the garbage bags in the garbage bag box 3 into the garbage bin 1 so that the garbage bags are close to the inner wall of the garbage bin 1. Specifically, a second through hole 212 is opened on the top of the installation box 21, and the second through hole 212 is adapted to the discharge end of the garbage bag box 3. The centrifugal fan 16 is installed on the outer side wall of the garbage hopper flap 12, and a fan shield 17 for protecting the centrifugal fan 16 is also installed on the outer side wall of the garbage hopper flap 12. When the garbage bag needs to be replaced, the centrifugal fan 16 is started, and a negative pressure is formed in the garbage bin 1, and the garbage bags in the garbage bag box 3 are sucked into the garbage bin 1, and the garbage bags are close to the inner wall of the garbage bin 1, so as to prepare for the subsequent garbage collection. The fan shield 17 protects the centrifugal fan 16 from external collision and dust erosion to ensure its normal operation.

[0049] join Figure 1 and Figure 2 The garbage hopper body 11 is equipped with a push rod motor 18, and one end of the push rod of the push rod motor 18 is hinged to the garbage hopper flap 12. When the garbage is full and needs to be dumped or the garbage bag is sealed and needs to be replaced, the push rod motor 18 is started to push the garbage hopper flap 12 to open or close, thereby automatically controlling the opening and closing of the garbage bin 1.

[0050] The implementation principle of this embodiment is:

[0051] Before the sweeper starts working, the centrifugal fan 16 on the garbage bin 1 is started to form a negative pressure in the garbage bin 1, sucking the garbage bags in the garbage box into the garbage bin 1 so that they are evenly attached to the inner wall of the garbage bin 1, ready to receive garbage.

[0052] When the sweeper performs sweeping operations on urban roads, the garbage is swept into the garbage bin 1 covered with bags through the sweeping device. As the garbage continues to accumulate, when the preset capacity is reached, the two stepper motors 221 in the sealing device are started. The stepper motor 221 outputs power according to the preset program, and after the speed is adjusted and the torque is increased by the reducer 222, it is transmitted to the bearing 224 through the coupling 223, thereby driving the driving wheel shaft and the synchronous wheel 226 to rotate, so that the synchronous belt 227 moves. The synchronous belt 227 drives the compensation mounting plate 241 to move, so that the second clamp 232 connected to the synchronous belt 227 approaches the first clamp 231. In this process, due to the complexity of urban road garbage, when the second clamp 232 contacts the garbage bag mouth, it will be subjected to forces of different directions and sizes. For garbage with regular shape and uniform texture, the second clamp 232 can move relatively smoothly and cooperate with the first clamp 231 to complete the clamping and sealing operations. However, for garbage with irregular shapes or special textures, the second clamp 232 can flexibly adjust the position and clamping force under the coordinated action of the first spring 243, the guide column 242, the second spring 246, the synchronous plate 2411, the follower mounting block 2412 and the guide limit assembly. For example, when encountering long garbage and generating horizontal lateral force, the first spring 243, under the guidance of the guide column 242, expands and contracts according to the direction and magnitude of the force, and the guide column 242 drives the second clamp 232 to move appropriately in the horizontal direction. At the same time, the second spring 246 will also share part of the force according to the force conditions to ensure the stability of the second clamp 232; when encountering heavier garbage and generating a larger downward pressure, the first spring 243 and the second spring 246 are compressed together to buffer the pressure, and the vertical position of the second clamp 232 is kept stable through the guide column 242 to prevent it from sinking excessively and affecting the sealing operation; when encountering sharp garbage and generating oblique force, each spring and the guide column 242 will also perform corresponding actions according to the force decomposition to ensure the correct position and clamping force of the second clamp 232.

[0053] When the second clamp 232 approaches the first clamp 231 and clamps the opening of the garbage bag, the first pulley 252 of the guide limit assembly slides in the guide groove of the guide block 251, and the second pulley 253 slides on the side wall of the guide block 251, accurately limiting the movement trajectory of the follower mounting block 2412 and the second clamp 232 to ensure their movement accuracy. When the garbage bag is clamped in place, the heating wire 2312 of the first clamp 231 is activated to melt and cut off the garbage bag that is close to the surface of the heating wire. Subsequently, the stepper motor 221 reverses to drive the garbage bag clamp to release the clamped garbage bag.

[0054] Next, the push rod motor 18 on the garbage hopper body 11 is started, and the push rod pushes the garbage hopper cover 12 to open, and the heat-sealed garbage bag is thrown out of the garbage hopper. After that, the push rod motor 18 is reversed to close the garbage hopper. Then, the centrifugal fan 16 is started again, and the above-mentioned bag suction process is repeated to suck the new garbage bag into the garbage bin 1, completing a complete garbage automatic bagging, sealing, and bag changing process. In the whole process, the various components are closely matched, and through precise mechanical structure design and reasonable power control, efficient processing of different types of garbage is achieved, the garbage processing efficiency and automation of the sweeper are improved, and the stability and reliability of the device are guaranteed.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic bag filling, sealing and bag changing device used in a sweeper, characterized in that: The invention comprises a garbage bin (1) and a sealing mechanism (2), wherein a delivery port (13) is provided on the top of the garbage bin (1), and the sealing mechanism (2) comprises: A driving assembly (22), the driving assembly (22) comprising a driving member and a synchronous belt (227) mounted on the top of the garbage bin (1), the driving member and the synchronous belt (227) being drivingly connected; A clamping assembly, the clamping assembly comprising a first clamp (231) and a second clamp (232), the first clamp (231) being fixed to the top of the garbage bin (1), and the first clamp (231) being located on one side of the synchronous belt (227), and the second clamp (232) being located directly above the delivery port (13); A compensation component (24), the compensation component (24) comprising a compensation mounting plate (241), a guide column (242) and a first spring (243), the compensation mounting plate (241) being connected to the synchronous belt (227), one end of the guide column (242) being slidably connected to the compensation mounting plate (241), the other end of the guide column (242) being fixedly connected to the second clamp (232), and the first spring (243) being installed between the second clamp (232) and the compensation mounting plate (241).

2. The automatic bag filling, sealing and bag changing device for a sweeper according to claim 1 is characterized in that: The guide column (242) includes a movable end (2421) and a limiting end (2422); the compensation mounting plate (241) is provided with a movable hole; the movable end (2421) is slidably connected to the movable hole; the limiting end (2422) is provided with a gasket (248) and a nut (249); when the first spring (243) is in a natural state, the gasket (248) abuts against the nut (249) and one end of the movable end (2421), respectively.

3. The automatic bag filling, sealing and bag changing device for a sweeper according to claim 2 is characterized in that: An oil-free bushing is installed in the movable hole, and the movable end (2421) is slidably connected to the oil-free bushing.

4. The automatic bag filling, sealing and bag changing device for a sweeper according to claim 1 is characterized in that: A retaining spring (245) is fixedly provided on the side wall of the guide column (242) close to the second clamp (232), and the first spring (243) is arranged around the outer wall of the guide column (242), one end of the first spring (243) is in contact with the retaining spring (245), and the other end of the first spring (243) is in contact with the compensation mounting plate (241).

5. The automatic bag filling, sealing and bag changing device for a sweeper according to claim 1 is characterized in that: A plurality of second springs (246) are also provided between the compensation mounting plate (241) and the second clamp (232), one end of the second spring (246) is connected to the compensation mounting plate (241), and the other end of the second spring (246) is connected to the second clamp (232).

6. The automatic bag filling, sealing and bag changing device for a sweeper according to claim 1 is characterized in that: The compensation mounting plate (241) is mounted with a synchronous plate (2411), a follower mounting block (2412) is fixedly arranged at the bottom of the synchronous plate (2411), and a part of the synchronous belt (227) is fixedly arranged between the synchronous plate (2411) and the follower mounting block (2412).

7. The automatic bag filling, sealing and bag changing device for a sweeper according to claim 6 is characterized in that: The sealing mechanism (2) further comprises a guide and limit assembly, the guide and limit assembly comprising a guide block (251), a first pulley (252) and a second pulley (253); the guide block (251) is mounted on the top of the trash bin (1); the guide block (251) is provided with a guide groove; the first pulley (252) and the second pulley (253) are both fixed to the follower mounting block (2412); the first pulley (252) is slidably connected to the guide groove; the second pulley (253) is slidably connected to the side wall of the guide block (251).

8. The automatic bag filling, sealing and bag changing device for a sweeper according to claim 1 is characterized in that: The garbage bin (1) comprises a garbage hopper body (11) and a garbage hopper cover (12), wherein the garbage hopper cover (12) is hinged to the bottom of the garbage hopper body (11).

9. The automatic bag filling, sealing and bag changing device for a sweeper according to claim 8, characterized in that: It also includes a garbage bag box (3), which is installed on the top of the sealing mechanism (2). The garbage hopper cover (12) is provided with a centrifugal fan (16), and the centrifugal fan (16) sucks the garbage bags in the garbage bag box (3) into the garbage bin (1), so that the garbage bags are closely attached to the inner wall of the garbage bin (1).

10. The automatic bag filling, sealing and bag changing device for a sweeper according to claim 8, characterized in that: The garbage hopper body (11) is equipped with a push rod motor (18), and one end of a push rod of the push rod motor (18) is hinged to the garbage hopper flap (12).

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