A garbage dump sweeper

Abstract

The present invention provides a self-unloading garbage sweeper, comprising a vehicle frame and a self-unloading garbage device, the self-unloading garbage device comprising a garbage hopper, a lifting drive device, a connecting assembly, and a locking assembly, the connecting assembly comprising a lifting arm, a flip arm, a connecting arm, a support shaft, and a flip shaft, the lifting arm being hinged between the garbage hopper and the support shaft, the flip arm being hinged between the garbage hopper and the flip shaft, the connecting arm being hinged between the flip shaft and the support shaft, the support frame being hingedly mounted on the vehicle frame, the flip shaft being detachably mounted on a locking slot, a supporting elastic member applying an upward elastic supporting force to the flip shaft via the support frame, and an unlocking drive device driving the support frame to rotate to separate the flip shaft from the locking slot. The reset of the garbage hopper in this case only requires the contraction drive of the lifting drive device, the coordination of the guide rod and the guide surface, the coordination of the guide wheel and the guide rail, and the engagement of the flip shaft with the locking slot, and the coordinated fixation of the above-mentioned structures to achieve stable reset of the garbage hopper.

Description

Technical Field

[0001] The present invention relates to the field of new energy sanitation equipment, and in particular to a garbage self-unloading sweeper. Background Art

[0002] Common floor sweepers on the market generally have wheels for traveling along the ground and at least one rotatable sweeping brush and a suction device for cleaning the ground. With the help of such floor sweepers, ground surfaces such as streets, sidewalks, parks or parking lots can be cleaned.

[0003] The sweeper usually travels in the form of a vehicle, and the suction equipment can be set in the rear area of the vehicle. A garbage hopper is set below the suction equipment to store garbage, and the vehicle can have a driver's seat in the front area. The roller brush located in the middle of the vehicle is used to lift up garbage or dust, which is then swept by the roller brush and filtered by the suction equipment to clean the road.

[0004] When the hopper is full of garbage, it needs to be dumped. The existing self-unloading garbage dumping operation mainly includes two steps: lifting and dumping. The lifting and dumping steps are mainly driven by the lifting drive device and the dumping drive device respectively. Specifically, when dumping garbage, the lifting drive device first lifts the hopper. After it is lifted to an appropriate height, the dumping drive device drives the hopper to flip over and then dump the garbage to the designated location. When the hopper is returned to the sweeper, the dumping drive device first rotates the hopper back to the loaded state, and then the lifting drive device lowers the hopper and returns it to the sweeper.

[0005] Since the lifting and dumping of the garbage hopper require two drive devices, and dumping and recycling have a strict sequence, if the sequence of actions is wrong, the garbage hopper will collide with the sweeper frame or the ground, which will cause damage to the equipment. Summary of the Invention

[0006] The purpose of the present invention is to provide a sweeper which can realize self-unloading of garbage and stably reset the garbage bucket by utilizing a single drive.

[0007] In order to achieve the purpose of the present invention, the present invention provides a garbage self-unloading sweeper, including a vehicle frame and a garbage self-unloading device; the vehicle frame is provided with a garbage collection chamber, and the vehicle frame is respectively provided with guide rails on the two inner side walls of the garbage collection chamber; the garbage self-unloading device includes a garbage bucket, a lifting drive device, a connecting assembly and a locking assembly, the connecting assembly includes a lifting arm, a flip arm, a connecting arm, a support shaft and a flip shaft, the garbage bucket is installed in the garbage collection chamber, and the garbage bucket is respectively provided with guide wheels on the two outer side walls, and the guide wheels can walk on the guide rails, the support shaft is fixedly arranged on the vehicle frame and is located above the garbage bucket, the lifting arm is hinged between the garbage bucket and the support shaft, the lifting drive device is fixedly arranged on the vehicle frame, the driving end of the lifting drive device is connected to the lifting arm and drives the arm to rotate around the support shaft, the flip arm is hinged between the garbage bucket and the flip shaft, the connecting arm The arm is hinged between the flip shaft and the support shaft; the locking assembly includes a support frame, an unlocking drive device, a flexible connecting strip and a supporting elastic member. The support frame is hingedly arranged on the vehicle frame and is located above the garbage bucket. The support frame is provided with a locking slot. The flip shaft is detachably arranged on the locking slot. The supporting elastic member is connected to the support frame. The support elastic member applies an upward elastic supporting force to the flip shaft through the support frame. The flexible connecting strip is connected between the support frame and the unlocking drive device. The unlocking drive device drives the support frame to rotate to separate the flip shaft from the locking slot; the guide wheel is located at the front end of the garbage bucket, and the lifting arm is provided with a hinge part and a guide surface at the lower end part. The hinge part is located at the rear end of the garbage bucket and is hinged to the garbage bucket. The garbage bucket is provided with a guide rod on the outer wall. The guide rod and the guide surface are both located on the rear side of the hinge part. The guide surface is located above the guide rod and adjacent to the guide rod.

[0008] It can be seen from the above scheme that the lifting arm and the garbage bin are driven to rotate and lift by the driving of the lifting drive device, and the rotation of the garbage bin also drives the rotation and lifting of the flip arm. Since the upper end of the flip arm is hinged to the flip shaft, and the flip shaft is supported by the locking groove of the support frame, the garbage bin is in a loaded state when it is rotated and lifted, so as to prevent garbage from leaking out. Subsequently, the support frame is driven to move by the unlocking drive device, and the locking groove is separated from the flip shaft. Under the action of the gravity of the garbage in the garbage bin, the garbage bin flips downward and dumps, which can achieve dumping at a precise position. When the garbage bin is recycled, it only needs to drive the lifting drive device to reset the garbage bin, that is, when the garbage bin rotates downward, the adjacent contact of the guide rod and the guide surface is utilized. The garbage bin can be rotated around the hinge part to the loading state, and the guide wheel and the guide rail are used to guide the garbage bin back into the garbage collection chamber. At the same time, since the support elastic member elastically resets the support frame and the flexible connection of the flexible connecting strip, the reset and positioning support of the support frame do not require the drive of the unlocking drive device. Therefore, the flip shaft can engage with the lock groove as the garbage bin and the flip arm rotate, and then maintain the loading state of the garbage bin again. It can be seen that the reset of the garbage bin in this case only requires the contraction drive of the lifting drive device, the cooperation of the guide rod and the guide surface, the cooperation of the guide wheel and the guide rail, and the engagement of the flip shaft and the lock groove. The above-mentioned structure is used to fix the garbage bin stably.

[0009] A further solution is that the garbage unloading device includes a gas spring, which is connected between the connecting arm and the frame.

[0010] As can be seen from the above, the gas spring drives the connecting arm, which in turn assists in driving the flipping arm and the garbage bucket to flip and dump.

[0011] A further solution is that the flip arm is located on the front side of the lifting arm, the lower end of the flip arm is located on the front side of the hinged part and is hinged to the garbage bucket, the lower end of the flip arm is located on the rear side of the guide wheel, the upper end of the flip arm is hinged to the flip shaft, and the flip shaft is located on the front side of the support shaft.

[0012] A further solution is that the upper end of the support frame is hinged to the frame, the lock slot is located on the rear side of the upper end of the support frame, and the unlocking drive device is located on the front side of the upper end of the support frame. The unlocking drive device can drive the support frame to rotate toward the front side, and the supporting elastic member can drive the support frame to rotate toward the rear side.

[0013] As can be seen from the above, the flip arm is located in front of the lifting arm, so that the support shaft, flip shaft, lower end of the flip arm, and hinged portion form a parallelogram. This maintains the hopper stably loaded when it is lifted. Since the hopper is typically mounted on the rear side of the sweeper, it is typically lifted toward the rear. Therefore, the unlocking drive device can drive the support frame to rotate toward the front, and the supporting elastic member can drive the support frame to rotate toward the rear, facilitating the dumping and flipping of the hopper, as well as the unlocking drive arrangement of the unlocking drive device.

[0014] A further solution is that the lower end of the flip arm is located on the lower side of the hinged portion, and the flip shaft is located on the lower side of the support shaft.

[0015] As can be seen from the above, the lower end of the flip arm and the flip axis are arranged downward. After the garbage bucket is lifted, the lower end of the flip arm is arranged downward to facilitate the flipping and dumping of the garbage bucket.

[0016] A further solution is that the connecting assembly includes two lifting arms and a flip arm, and the two lifting arms are respectively arranged on the two outer side walls of the garbage hopper, the lifting drive device and the locking assembly are located on both sides in the horizontal direction, the driving end of the lifting drive device is connected to the lifting arm on one side, and the connecting arm is close to the lifting arm on the other side and connected to the flip arm.

[0017] As can be seen from the above, the operation and support of the garbage hopper can be made more stable by the two lifting arms, and the lifting drive device and the locking assembly are located on both sides in the horizontal direction, thereby saving space for device layout.

[0018] A further solution is that the frame is provided with two mounting columns above the garbage collection chamber, the two mounting columns are located on both sides in the horizontal direction, the support shaft is fixedly installed between the two mounting columns, and the support frame is hinged to the mounting column on the same side.

[0019] As can be seen from the above, the two mounting columns provide stable support for the support shaft and the support frame, thereby enabling the garbage hopper and the lifting arm, flip arm, and connecting arm connected thereto to operate stably.

[0020] A further solution is that the guide rail is provided with an access section, a lifting section and a bearing section, the lifting section is connected between the access section and the bearing section, the bearing section is located at the front end of the garbage collection chamber, the access section is located at the rear end of the garbage collection chamber, and the vertical height of the access section is lower than the vertical height of the bearing section.

[0021] As can be seen from the above, the access section located at the rear end and lower is first cooperated with the guide wheel, and as the guide wheel moves and rises, the front end of the garbage hopper is then lifted, thereby driving the garbage hopper to return to the loading state.

[0022] A further solution is that the lifting arm includes a straight rod portion and a connecting portion, the upper end portion of the straight rod portion is hinged to the support shaft, the lower end portion of the straight rod portion is connected to the connecting portion, the hinge portion and the guide surface are both located on the connecting portion, the extension direction of the straight rod portion deviates from the center of the hinge portion, the straight rod portion is located on the rear side of the hinge portion, and the guide surface is located between the straight rod portion and the hinge portion.

[0023] A further solution is that the lower end of the flip arm is located below the front side of the hinged portion, the lower end of the flip arm is hinged to the garbage bucket, the lower end of the straight rod portion is located above the rear side of the hinged portion, and the projections of the lower end of the flip arm, the hinged portion and the lower end of the flip arm on the vertical plane are on the same straight line.

[0024] As can be seen from the above, by deviating the extension direction of the straight rod from the center of the hinged portion, cooperating with the guide rod and the guide surface, and utilizing the lower end of the flip arm, the hinged portion and the lower end of the flip arm to be in the same straight line, the garbage bin can be more easily rotated upward and reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of an embodiment of a sweeper of the present invention.

[0026] Figure 2 It is a cross-sectional view of an embodiment of a sweeping vehicle of the present invention.

[0027] Figure 3 It is a structural diagram of an embodiment of a sweeper of the present invention located at the garbage collection chamber.

[0028] Figure 4 It is a structural diagram of the garbage unloading device in the recycling state in the embodiment of the sweeper of the present invention.

[0029] Figure 5 It is a structural diagram of the garbage unloading device in the lifting state in the embodiment of the sweeper of the present invention.

[0030] Figure 6 It is a structural diagram of the garbage unloading device in the embodiment of the sweeper of the present invention in the dumping state.

[0031] Figure 7 It is a structural diagram of the garbage unloading device in the lowered state in the embodiment of the sweeper of the present invention.

[0032] Figure 8 1 is a structural diagram of the garbage unloading device in the embodiment of the sweeper of the present invention in the reset state.

[0033] Figure 9 It is a cross-sectional view of the garbage unloading device in the sweeping vehicle embodiment of the present invention in the recovery state.

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0035] Reference Figures 1 to 9 The sweeper 1 includes a frame 11, a front wheel 151, a rear wheel 152, a steering wheel 153, a negative pressure suction device 13 and a garbage unloading device 2. The front wheel 151 and the rear wheel 152 are respectively arranged in front and rear of the frame 11, and the steering wheel 153 is arranged in front of the frame 11. A garbage collection chamber 111 is provided on the lower rear side of the frame 11. The garbage collection chamber 111 is located between the two rear wheels 152. The frame 11 is provided with guide rails 12 on both inner side walls 112 of the garbage collection chamber 111. The guide rails 12 are provided. An access section 121, a lifting section 122 and a bearing section 123 are provided. The lifting section 122 is connected between the access section 121 and the bearing section 123. The bearing section 123 is located at the front end of the garbage collection chamber 111, and the access section 121 is located at the rear end of the garbage collection chamber 111. The vertical height of the access section 121 is lower than the vertical height of the bearing section 123. The bearing section 123 is arranged horizontally, and the access section 121 and the lifting section 122 are arranged inclined to the horizontal plane. The inclination angle of the access section 121 is greater than the inclination angle of the lifting section 122.

[0036] A negative pressure suction device 13 is provided above the waste collection chamber 111, which can apply negative pressure to the waste collection chamber 111. A roller brush mounting position 14 is provided at the front of the waste collection chamber 111 for mounting a roller brush. The frame 11 is provided with two mounting posts 16 above the waste collection chamber 111. These posts 16 are located on either side of the horizontal axis and extend vertically.

[0037] The garbage unloading device 2 includes a garbage hopper 21, a lifting drive device 25, a gas spring 37, a connecting assembly and a locking assembly 3. The garbage hopper 21 is semi-enclosed, and the accommodating cavity of the garbage hopper 21 is provided with an opening 211 at the top. The garbage hopper 21 is respectively provided with a guide wheel 212 and a guide rod 213 on the two outer side walls. The guide wheel 212 is located at the front end of the garbage hopper 21, and the guide rod 213 is located at the rear end of the garbage hopper 21. The guide rod 213 extends in the horizontal direction.

[0038] The connecting assembly includes two lifting arms 23, a flip arm 24, a connecting arm 36, a support shaft 22 and a flip shaft 35. The support shaft 22 and the flip shaft 35 are arranged horizontally. The support shaft 22 is mounted between the upper ends of the two mounting columns 16. The two lifting arms 23 are respectively arranged on the two outer side walls of the garbage hopper 21. The lifting arm 23 includes a straight rod portion 231 and a connecting portion 232. The upper end of the straight rod portion 231 is hinged to the support shaft 22, and the lower end 235 of the straight rod portion 231 is connected to the connecting portion 232. The lifting arm 23 is The lower end portion is provided with a hinge portion 233 and a guide surface 234, both of which are located on the connecting portion 232, the hinge portion 233 is located at the lowermost end of the connecting portion 232, the extension direction of the straight rod portion 231 deviates from the center of the hinge portion 233, the straight rod portion 231 is located on the rear side of the hinge portion 233, the guide surface 234 is located between the straight rod portion 231 and the hinge portion 233, the guide surface 234 is located at the lower side contour edge of the connecting portion 232, and the guide surface 234 is arranged as an inclined surface inclined to the horizontal plane.

[0039] The hinged portion 233 is located at the rear end of the trash hopper 21 and is hinged to the trash hopper 21. The guide rod 213 and the guide surface 234 are both located on the rear side of the hinged portion 233. The guide surface 234 is located above the guide rod 213 and is adjacent to the guide rod 213. As the trash hopper 21 and the lifting arm 23 rotate, the state of the trash hopper 21 can be rotated by utilizing the cooperation between the guide surface 234 and the guide rod 213.

[0040] The flip arms 24 are respectively arranged on the two outer side walls of the garbage bucket 21. The flip arms 24 are located on the front side of the lifting arm 23. The lower end portion 241 of the flip arm 24 is located on the front side of the hinge portion 233 and is hinged to the garbage bucket 21. The lower end portion 241 of the flip arm 24 is located on the rear side of the guide wheel 212. The upper end portion 242 of the flip arm 24 is hinged to the flip shaft 35. The flip shaft 35 is located at the front side and lower part of the support shaft 22. The lower end portion 241 of the flip arm 24 is located below the front side of the hinge portion 233, and the lower end portion of the straight rod portion 231 is located above the rear side of the hinge portion 233. The projections of the lower end of the flip arm 24, the hinge portion 233 and the lower end portion 241 of the flip arm 24 on the vertical plane are on the same straight line. At the same time, the support shaft 22, the flip shaft 35, the lower end portion 241 of the flip arm 24 and the projection of the hinge portion 233 on the vertical plane form a parallelogram. Then, during the lifting process of the flip arm 24 and the garbage bucket 21, the garbage bucket 21 is in a loading state to prevent the garbage from tilting down.

[0041] The lock assembly 3 includes a support frame 31, an unlocking drive device 32, a flexible connecting strip 33 and a supporting elastic member 34. The support frame 31 is arranged in a sheet shape. The support frame 31 is located above the garbage bin 21. The upper end portion 311 of the support frame 31 is hinged to the sub-frame 161 of the mounting column 16 on the same side. The support frame 31 is provided with a locking slot 312. The locking slot 312 has an opening facing upward and rearward. The supporting elastic member 34 adopts a spring. The supporting elastic member 34 is connected between the support frame 31 and the mounting column 16 of the frame 11. The supporting elastic member 34 is arranged in the vertical direction and is located above the front side of the locking slot 312. The supporting elastic member 34 is also located on the rear side of the upper end portion 311. The locking slot 312 is provided with an inclined guide slope 314 at the lower rear side. The guide slope 314 is used to guide the mating flip axis 35.

[0042] The flexible connecting strip 33 can be a strip-shaped object such as a chain or steel wire that has a certain pulling stiffness but also has deformation space. The flexible connecting strip 33 is connected between the lower end of the support frame 31 and the unlocking drive device 32. The locking slot 312 is located on the rear side of the upper end 311 of the support frame 31. The unlocking drive device 32 is located on the front side of the upper end 311 of the support frame 31. The unlocking drive device 32 can be an electric, hydraulic or pneumatic linear drive device. The unlocking drive device 32 can drive the support frame 31 to rotate toward the front. The unlocking drive device 32 drives the support frame 31 to rotate to separate the flip shaft 35 from the locking slot 312. The supporting elastic member 34 uses elastic force to drive the support frame 31 to reset and rotate toward the rear and upward.

[0043] The support shaft 22 is fixedly mounted on the vehicle frame 11 and positioned above the hopper 21. The lifting arm 23 is hingedly connected between the hopper 21 and the support shaft 22. A lifting drive 25 is fixedly mounted on the vehicle frame 11. The lifting drive 25 can be a hydraulic linear drive. In addition to this embodiment, an electric linear drive or a pneumatic linear drive can also be used. A driving end 251 of the lifting drive 25 is connected to one side of the lifting arm 23 and drives the lifting arm 23 to rotate about the support shaft 22.

[0044] The lifting drive device 25 and the locking assembly 3 are located on both sides in the horizontal direction. The locking assembly 3 is connected to the flip arm 24 on the other side. Specifically, the upper end of the connecting arm 36 is hinged to the support shaft 22, and the lower end of the connecting arm 36 is hinged to the flip shaft 35. The gas spring 37 is connected between the middle part of the connecting arm 36 and the frame 11. The gas spring 37 assists in driving the flip arm and the garbage bin to flip and dump. The upper end 242 of the flip arm 24 on the other side is hinged to the flip shaft 35, and the flip shaft 35 is detachably arranged on the lock slot 312. The supporting elastic member 34 applies an upward elastic supporting force to the flip shaft 35 through the support frame 31, and the lower end 241 of the flip arm 24 is hinged to the garbage bin 21.

[0045] Reference Figure 4 and Figure 9 When the sweeper 1 is in normal operation of dust collection and filtration, the garbage hopper 21 is installed in the garbage collection chamber 111, and the garbage filtered by the negative pressure suction device 13 and the garbage swept by the roller brush fall into the garbage hopper 21. When the garbage hopper is full, it is necessary to lift and dump the garbage hopper 21. Figure 5 The lifting drive device 25 drives the lifting arm 23 and the garbage hopper 21 to rotate and lift, and the tilting shaft 35 is stably supported by the support frame 31, and the support shaft 22, the tilting shaft 35, the lower end portion 241 of the tilting arm 24 and the hinge portion 233 are projected on the vertical plane to form a stable parallelogram, and then when the tilting arm 24 and the garbage hopper 21 are lifted toward the rear side, the garbage hopper 21 is in a loaded state.

[0046] Reference Figure 6 , and then the dumping step is carried out. The support frame 31 is driven to move toward the front side by the unlocking drive device 32, and then the lock groove 312 is separated from the flip shaft 35, so that the support shaft 22, the flip shaft 35, the lower end portion 241 of the flip arm 24 and the hinge portion 233 no longer form a parallelogram. Under the action of the gravity of the garbage in the garbage hopper 21 and the assistance of the gas spring 37, the garbage hopper 21 is smoothly flipped downward and dumped.

[0047] Reference Figure 7 After the dumping and cleaning is completed, the lowering and recovery step is carried out. The lifting drive device 25 is driven by contraction to make the lifting arm 23 and the garbage bucket 21 descend and rotate. At this time, the guide rod 213 and the guide surface 234 are adjacent and matched. As the garbage bucket 21 further descends and the lifting arm 23 further rotates, the guide surface 234 rotates to the top of the guide rod 213, and at this time, the garbage bucket 21 is also driven to reset and deflect in the horizontal direction. In addition, the guiding inclined surface 314 is guided and matched with the flip axis 35.

[0048] Reference Figure 8 As the recycling and resetting is further carried out, the guide wheel 212 first contacts the access section 121, and as the guide wheel 212 moves on the guide rail 12, the guide wheel 212 passes through the lifting section 122 and finally stops at the bearing section 123. The bearing section 123 stably supports the guide wheel 212. At the same time, the flip shaft 35 re-engages with the lock slot 312, and then the recycling and resetting of the garbage bin is completed.

[0049] As can be seen from the above, the reset of the garbage hopper in this case only requires the contraction drive of the lifting drive device, the coordination of the guide rod and the guide surface, the coordination of the guide wheel and the guide rail, and the engagement of the flip shaft and the lock groove. The above-mentioned structure is used to coordinate and fix the garbage hopper to achieve stable reset.

[0050] Of course, the above embodiment is only a preferred embodiment of the present case, and there may be more variations in specific applications. For example, a single lifting arm and a flip arm may be used to connect and drive the garbage hopper. In addition, the structure of the frame may have various forms. For example, the mounting column may be understood as a part of the frame, or the support shaft may be fixed to the upper structure of the frame. Furthermore, in addition to opening toward the rear as in the above embodiment, the garbage hopper may also flip toward the side. Then, the orientation coordinate system of the above embodiment may be transferred accordingly, which can also achieve the purpose of the present invention.

Claims

1. A garbage dump sweeper, characterized in that: Including vehicle frame and garbage dump device; The frame is provided with a garbage collection cavity, and the frame is provided with guide rails on both inner side walls of the garbage collection cavity; The garbage unloading device includes a garbage bucket, a lifting drive device, a connecting assembly and a locking assembly, the connecting assembly includes a lifting arm, a flip arm, a connecting arm, a support shaft and a flip shaft, the garbage bucket is installed in the garbage collecting chamber, the garbage bucket is respectively provided with guide wheels on both outer side walls, the guide wheels can walk on the guide rails, the support shaft is fixedly arranged on the vehicle frame and is located above the garbage bucket, the lifting arm is hinged between the garbage bucket and the support shaft, the lifting drive device is fixedly mounted on the vehicle frame, the driving end of the lifting drive device is connected to the lifting arm and drives the arm to rotate around the support shaft, the flip arm is hinged between the garbage bucket and the flip shaft, and the connecting arm is hinged between the flip shaft and the support shaft; The lock assembly includes a support frame, an unlocking drive device, a flexible connecting strip and a supporting elastic member, the support frame is hingedly arranged on the vehicle frame and is located above the garbage bucket, the support frame is provided with a lock slot, the flip shaft is detachably arranged on the lock slot, the supporting elastic member is connected to the support frame, the supporting elastic member applies an upward elastic supporting force to the flip shaft through the support frame, the flexible connecting strip is connected between the support frame and the unlocking drive device, and the unlocking drive device drives the support frame to rotate to separate the flip shaft from the lock slot; The guide wheel is located at the front end of the garbage hopper, and the lifting arm is provided with a hinge portion and a guide surface at the lower end thereof, the hinge portion is located at the rear end of the garbage hopper and is hinged to the garbage hopper, and the garbage hopper is provided with a guide rod on the outer side wall, the guide rod and the guide surface are both located at the rear side of the hinge portion, and the guide surface is located above the guide rod and adjacent to the guide rod; The flip arm is located at the front side of the lifting arm, the lower end of the flip arm is located at the front side of the hinged portion and is hinged to the garbage bucket, the lower end of the flip arm is located at the rear side of the guide wheel, the upper end of the flip arm is hinged to the flip shaft, and the flip shaft is located at the front side of the support shaft; The upper end of the support frame is hinged to the vehicle frame, the locking slot is located at the rear side of the upper end of the support frame, the unlocking driving device is located at the front side of the upper end of the support frame, the unlocking driving device can drive the support frame to rotate toward the front side, and the supporting elastic member can drive the support frame to rotate toward the rear side; The lower end portion of the flip arm is located at the lower side of the hinge portion, and the flip shaft is located at the lower side of the support shaft.

2. The sweeping vehicle according to claim 1, characterized in that: The garbage self-unloading device includes a gas spring connected between the connecting arm and the vehicle frame.

3. The sweeping vehicle according to claim 1, characterized in that: The connecting assembly includes two lifting arms, which are respectively arranged on the two outer side walls of the garbage hopper; The lifting drive device and the locking assembly are located on both sides in the horizontal direction, the driving end of the lifting drive device is connected to the lifting arm on one side, and the connecting arm is close to the lifting arm on the other side and connected to the flip arm.

4. The sweeping vehicle according to claim 3, characterized in that: The frame is provided with two mounting columns above the garbage collection chamber, the two mounting columns are located on both sides in the horizontal direction, the support shaft is fixedly installed between the two mounting columns, and the support frame is hinged to the mounting column on the same side.

5. The sweeping vehicle according to claim 1, characterized in that: The guide rail is provided with an access section, a lifting section and a bearing section, the lifting section is connected between the access section and the bearing section, the bearing section is located at the front end of the garbage collection chamber, the access section is located at the rear end of the garbage collection chamber, and the vertical height of the access section is lower than the vertical height of the bearing section.

6. The sweeping vehicle according to any one of claims 1 to 5, characterized in that: The lifting arm includes a straight rod portion and a connecting portion, the upper end portion of the straight rod portion is hinged to the support shaft, the lower end portion of the straight rod portion is connected to the connecting portion, the hinge portion and the guide surface are both located on the connecting portion, the extension direction of the straight rod portion deviates from the center of the hinge portion, the straight rod portion is located at the rear side of the hinge portion, and the guide surface is located between the straight rod portion and the hinge portion.

7. The sweeping vehicle according to claim 6, characterized in that: The lower end portion of the flip arm is located below the front side of the hinged portion, the lower end portion of the flip arm is hinged to the garbage bucket, the lower end portion of the straight rod portion is located above the rear side of the hinged portion, and the projections of the lower end of the flip arm, the hinged portion and the lower end portion of the flip arm on the vertical plane are on the same straight line.

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