A small lifting and dumping device

By designing a four-link structure and linking the guide and trigger in the lifting and dumping device of the small garbage truck, the problem that the existing large garbage truck lifting and dumping device is not suitable for small garbage trucks is solved, and the effect of structural simplification, stability improvement and cost reduction is achieved.

CN222728751UActive Publication Date: 2025-04-08FUJIAN LONGMA ENVIRONMENTAL SANITATION EQUIP
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Patent Information

Application Number
CN202421518938.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-28
Publication Date
2025-04-08
Estimated Expiration
2034-06-28

AI Technical Summary

Technical Problem

The existing large garbage trucks have complex structures, large number of oil cylinders, and high cost. They are not suitable for small garbage trucks. There is a risk of falling of the jig machine and garbage bin due to the abnormal operation of the oil cylinder.

Method used

A small lifting and dumping device is designed, and a four-link structure is formed between the drive member, the flip frame, the driven member and the fixing frame, and the telescopic end of a single oil cylinder is used to push the drive member upwards, driving the flip frame and the driven member upwards, so as to realize the dumping of the trash can. At the same time, by adding guides and triggers, the additional cylinder drive locking mechanism is replaced, the structure is simplified and the number of cylinders is reduced.

Benefits of technology

The structure of the lifting dumping device is simplified, the structural stability is improved, the use of oil cylinders and manufacturing costs are reduced, the risk of the locking mechanism is reduced, and the lifting dumping device with different specifications is adapted to the needs of different specifications.

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Abstract

The utility model provides a small lifting and dumping device, comprising: a fixed frame, installed at the rear side of the feeding port of the corresponding garbage truck; a flip frame, located at the rear side of the fixed frame and provided with a barrel hanging part; a driving member and a driven member distributed at intervals, the upper ends of the driving member and the driven member are respectively rotatably connected to the fixed frame, and the lower ends are respectively rotatably connected to the flip frame, the rear middle part of the driving member is provided with a guide member protruding backwards, and the rear part of the guide member is provided with a protruding clamping part and a recessed unlocking part in sequence from top to bottom; a driving device, which is rotatably arranged at the lower side of the feeding port and the telescopic end is rotatably connected to the flip frame; a locking mechanism, which is located at the rear side of the barrel hanging part and the lower end is rotatably connected to the flip frame to form a rotation point, the front side of the locking mechanism is provided with a trigger member that movably abuts the unlocking part, and the upper part is provided with a pressure plate corresponding to the barrel hanging part. While simplifying the structure of the lifting and dumping device, the locking mechanism can swing and lock the garbage can through the coordinated linkage between the guide member and the trigger member, thereby reducing the number of oil cylinders and reducing costs.
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Description

Technical Field

[0001] The utility model relates to the field of lifting and dumping devices, in particular to a small lifting and dumping device. Background Art

[0002] The lifting and dumping device of a common large garbage truck generally includes a turning frame driven by left and right lifting cylinders to lift, turn and dump the garbage, and a pressure plate driven by a clamping cylinder to clamp the upper edge of the garbage bin, so that the lifting and dumping device has a sufficiently stable driving force to enable the pressure plate to clamp the two garbage bins on the turning frame and drive the turning frame to drive the two garbage bins to dump the garbage.

[0003] With regard to the lifting and dumping device of a small garbage truck that only needs to drive one garbage bin to empty the garbage, the lifting and dumping device of the above-mentioned large garbage truck has a complex structure, a large number of cylinders, and high cost, and requires a large installation space. At the same time, the coaxiality of the left and right lifting cylinder seats is also difficult to ensure. There is a risk of the machine getting stuck due to the asynchronous extension and retraction of the cylinders during operation of the left and right lifting cylinders. The pressure plate is driven by an additional cylinder, which not only increases the risk of the garbage bin falling due to the asynchronous driving between the cylinders and the failure to clamp during lifting, but also increases the overall manufacturing cost and driving cost of the lifting and dumping device. It can be seen that the existing lifting and dumping device of large garbage trucks is obviously not suitable for small garbage trucks.

[0004] Therefore, the purpose of the present invention is to design a small lifting and dumping device suitable for small garbage trucks in view of the problems existing in the above-mentioned prior art. Utility Model Content

[0005] In view of the problems existing in the above-mentioned prior art, the utility model provides a small lifting and dumping device, which can effectively solve the problems existing in the above-mentioned prior art.

[0006] The technical solution of the utility model is:

[0007] A small lifting and dumping device, comprising:

[0008] A fixed frame is installed at the rear side of the feeding port of the corresponding garbage truck;

[0009] A turning frame, located behind the fixed frame and provided with a hanging bucket portion for hanging a corresponding trash can;

[0010] A driving member and a driven member are arranged at intervals, wherein the upper ends of the driving member and the driven member are respectively rotatably connected to the fixing frame, and the lower ends are respectively rotatably connected to the flip frame, a guide member protruding backwards is provided at the rear middle part of the driving member, and a protruding clamping part and a recessed unlocking part are sequentially provided at the rear part of the guide member from top to bottom;

[0011] A driving device, rotatably disposed at the lower side of the feeding port and having a telescopic end rotatably connected to the turning frame;

[0012] The locking mechanism is located at the rear side of the barrel hanging part and the lower end is rotatably connected to the flip frame to form a rotation point. The front side of the locking mechanism is provided with a trigger member that movably abuts against the unlocking part, and the upper part is provided with a pressure plate corresponding to the barrel hanging part; when the driving device drives the driving member to swing upward to drive the flip frame and the follower to swing upward, the guide member pushes the trigger member to move to the side of the clamping part away from the unlocking part, so that the locking mechanism swings around the rotation point toward the barrel hanging part until the pressure plate clamps the trash can.

[0013] Further, the trigger member is configured as a roller that rolls and abuts against the unlocking portion, the unlocking portion is an arc-shaped depression, the clamping portion is an arc-shaped protrusion, the rear arc-shaped protrusion of the guide member is provided with a limiting portion located at the lower side of the unlocking portion, the clamping portion, the unlocking portion, and the limiting portion are arranged in an arc-shaped transition in sequence, and the lower side depression of the guide member is provided with a makeshift groove located between the limiting portion and the driving member.

[0014] Furthermore, the pressure plate is configured to be L-shaped with an opening facing backwards, and the front side of the lower half of the pressure plate is detachably provided with a trigger bracket located in the middle and with the end extending downward, and a swing frame located on the left and right sides of the trigger bracket, and the roller is rotatably arranged in the end of the trigger bracket, and the lower ends of the two swing frames extend backwards and are hinged to the rear side of the barrel hanging part to form the rotation point, and the distance between the rotation point and the roller is smaller than the distance between the rotation point and the upper half of the pressure plate.

[0015] Furthermore, the trigger bracket and the swing bracket are respectively provided with vertically extending adjustment holes on the left and right sides, and the trigger bracket and the swing bracket are respectively screwed to the pressure plate through a plurality of screw components and the corresponding adjustment holes.

[0016] Furthermore, the two fixing frames are provided with two and are symmetrically arranged on the left and right sides, the driving member is located between the two fixing frames and includes a driving rod that is symmetrical on the left and right sides, a supporting plate fixed to the rear sides of the two driving rods, and a sleeve fixed transversely to the lower ends of the two driving rods, the upper end of the driving rod is rotatably connected to the front part of the fixing frame and the lower part is tilted and folded backward to form a rear expansion part that is rotatably connected to the front side of the flip frame through the sleeve, and a hinged part that is hinged to the telescopic end of the driving device is extended toward each other between the folded parts of the two driving rods.

[0017] Furthermore, the lower part of the support plate is tilted backward and folded to form a support part adapted to the rear expansion part, the guide member is arranged on the support part, and reinforcing plates fixed to the support part are symmetrically and vertically fixed on the left and right sides of the guide member, and the two reinforcing plates respectively correspond to the clamping parts, and the front side of the support part is fixed with reinforcing rods whose two ends are fixed to the two rear expansion parts, and the reinforcing rods correspond to the two reinforcing plates, and a mounting hole and a plurality of deweighting holes are respectively provided at the folded part of the support plate and at the place where the guide member and the reinforcing plate are not provided.

[0018] Furthermore, the number of the follower members is set to two and they are symmetrically located on the left and right sides of the driving member. The upper ends of the two follower members are respectively hinged to the rear end of the fixing frame, and the lower ends are respectively hinged to the left and right sides of the top of the flip frame.

[0019] Furthermore, a support rod is provided at the rear portion of the lower end of the flip frame, the bucket hanging portion is configured as a plurality of hanging teeth extending upward, the upper edge of the trash can is hung on the hanging teeth and the front side abuts against the support rod.

[0020] Therefore, the utility model provides the following effects and / or advantages:

[0021] 1. The present application forms a four-bar structure among the driving member, the turning frame, the driven member and the fixed frame, so that the turning frame and the driven member can be driven to swing up by the telescopic end of a single oil cylinder, thereby driving the trash can on the rear side of the turning frame to swing up and then flip to the opening facing downward corresponding to the feeding port for dumping, thereby simplifying the structure of the lifting and dumping device, improving the structural stability, reducing the use of oil cylinders and reducing the manufacturing cost; at the same time, by adding guide members and trigger members to replace the existing technical solution of locking the trash can by driving the locking mechanism with an additional oil cylinder, when the lifting and dumping device performs the lifting and dumping operation, the locking mechanism can swing and lock the trash can through the coordinated linkage between the guide member and the trigger member, thereby reducing the number of oil cylinders and thus reducing the manufacturing cost, and improving the stability of the coordination between the locking action of the locking mechanism and the lifting and flipping action of the turning frame, so that the locking mechanism will inevitably lock the trash can when the turning frame is lifted.

[0022] 2. The present application can adjust the relative positions of the hinge, the roller and the pressure plate by changing the height of the screw assembly and the locking position of the adjustment barrel, thereby adapting to lifting and dumping devices with different specifications and improving the adaptability of the locking mechanism.

[0023] 3. The present application sets the rear expansion part so that when the telescopic end of the driving device pushes the driving member to swing upward, the lower end of the rear expansion part can push the flip frame to swing upward at a larger angle, thereby improving the stability of the flip frame driving the trash can to lift, flip and dump materials, avoiding the situation where the trash can is not tilted enough and the garbage cannot be completely dumped out, and also allowing the trash can to be lifted and flipped until the opening is facing downward. The opening is located further forward to prevent garbage from falling to the outside of the feed port and polluting the environment. At the same time, through the setting of the support plate, after the guide member pushes the locking mechanism to lock the trash can, the pressure on the guide member can be transmitted to the two driving rods through the support plate, and then transmitted to the fixed bracket, flip frame and driving device, which can avoid stress concentration and improve the overall structural stability of the lifting and flipping mechanism.

[0024] 4. The present application further transmits the pressure exerted on the guide member after the locking mechanism pushes the trash can to the support plate and the two driving rods by adding reinforcing plates and reinforcing rods, and then transmits it to the fixed bracket, the flip frame and the driving device, thereby further strengthening the overall structural strength of the driving member, strengthening the supporting strength of the guide member, and improving the stability and firmness of the guide member pushing the locking mechanism to lock the trash can, thereby reducing the risk of the guide member being damaged, resulting in the locking mechanism failing to lock and causing the trash can to fall when emptying. At the same time, through the provision of a mounting hole and a plurality of deweighting holes, it is convenient to align the telescopic end of the driving device with the hinged part for rotational connection, and the support plate can reduce its own weight while achieving the corresponding effect, thereby reducing the burden on the fixed frame and the telescopic end of the driving device.

[0025] It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of a small lifting and dumping device installed on the rear side of a garbage truck.

[0027] Figure 2 for Figure 1 Schematic diagram of the partial structure of the lifting and dumping device.

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the driving component.

[0029] Figure 4 for Figure 3 Schematic diagram of the side structure.

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the locking mechanism.

[0031] Figure 6 It is a schematic diagram of the side view and partial cross-section structure of a small lifting and dumping device.

[0032] Figure 7 for Figure 6 A schematic diagram of the partial cross-sectional structure of the driving member, the driven member, and the turning frame after being swung up.

[0033] Figure 8 The figure is a schematic diagram of the side structure of a small lifting and dumping device when in use. DETAILED DESCRIPTION

[0034] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the accompanying drawings:

[0035] refer to Figure 1-8 , a small lifting and dumping device, comprising:

[0036] The fixing frame 1 is installed at the rear side of the feeding port 81 of the corresponding garbage truck 8;

[0037] The flip frame 2 is located behind the fixed frame 1 and is provided with a hanging bucket portion 21 for hanging a corresponding trash can 9;

[0038] The driving member 3 and the driven member 4 are arranged at intervals, the upper ends of the driving member 3 and the driven member 4 are respectively rotatably connected to the fixing frame 1, and the lower ends are respectively rotatably connected to the flip frame 2, the rear middle part of the driving member 3 is provided with a guide member 31 protruding backwards, and the rear part of the guide member 31 is provided with a protruding clamping part 311 and a concave unlocking part 312 in sequence from top to bottom;

[0039] A driving device 5 is rotatably disposed at the lower side of the feeding port 81 and the telescopic end is rotatably connected to the turning frame 2. Specifically, the driving device 5 is configured as a telescopic cylinder;

[0040] The locking mechanism 6 is located at the rear side of the hanging bucket part 21 and the lower end is rotatably connected to the flip frame 2 to form a rotation point 7. The front side of the locking mechanism 6 is provided with a trigger member 61 that movably abuts the unlocking portion 312, and the upper part is provided with a pressure plate 62 corresponding to the hanging bucket part 21; when the driving device 5 drives the driving member 3 to swing upward to drive the flip frame 2 and the follower 4 to swing upward, the guide member 31 pushes the trigger member 61 to move to the side of the clamping part 311 away from the unlocking portion 312, so that the locking mechanism 6 swings around the rotation point 7 toward the hanging bucket part 21 until the pressure plate 62 clamps the trash can 9.

[0041] The arrangement of the above structure forms a four-bar structure among the driving member 3, the turning frame 2, the follower 4 and the fixed frame 1, so that the turning frame 2 and the follower 4 can be driven to swing up by pushing the driving member 3 upward through the telescopic end of a single oil cylinder, thereby driving the trash can 9 on the rear side of the turning frame 2 to swing up and then flip to the opening facing downward corresponding to the material inlet 81 for dumping, which simplifies the structure of the lifting and dumping device, improves the structural stability, reduces the use of oil cylinders, and reduces the manufacturing cost; at the same time, the addition of the guide member 31 and the trigger member 61 replaces the existing technical solution of locking the trash can 9 by driving the locking mechanism 6 with an additional oil cylinder, so that when the lifting and dumping device performs the lifting and dumping operation, the locking mechanism 6 can swing and lock the trash can 9 through the coordinated linkage between the guide member 31 and the trigger member 61, which reduces the number of oil cylinders and thus reduces the manufacturing cost, and improves the stability of the coordination between the locking action of the locking mechanism 6 and the lifting and flipping action of the turning frame 2, so that the locking mechanism 6 will inevitably lock the trash can when the turning frame 2 is lifted.

[0042] In order to improve the stability of the cooperation between the trigger member 61 and the guide member 31, the trigger member 61 is set as a roller that rolls against the unlocking portion 312, the unlocking portion 312 is an arc-shaped depression, the clamping portion 311 is an arc-shaped protrusion, and the rear arc-shaped protrusion of the guide member 31 is provided with a limiting portion 313 located at the lower side of the unlocking portion 312, and the clamping portion 311, the unlocking portion 312, and the limiting portion 313 are sequentially arranged in an arc-shaped transition, so that the locking portion and the unlocking portion are connected by the roller and the arc-shaped transition. The cooperation between 312 improves the smoothness of the movement of the trigger member 61 on the rear part of the guide member 31, and the setting of the limit part 313 prevents the trigger member 61 from moving downward excessively and causing jamming. The lower side of the guide member 31 is recessed with a makeshift groove 314 located between the limit part 313 and the driving member 3, so that there is no interference between the guide member 31 and the crossbeam of the flip frame 2 during the upward swing of the driving member 3, and at the same time, the dead weight of the guide member 31 can be reduced, reducing the burden on the fixed frame 1 and the telescopic end of the driving device 5.

[0043] In order to improve the stability of the cooperation between the locking mechanism 6 and the guide member 31, the pressing plate 62 is set to be an L-shaped opening facing backwards, and the front side of the pressing plate 62 is detachably provided with a trigger bracket 63 located in the middle and extending downward at the end, and a swing bracket 64 located on the left and right sides of the trigger bracket 63, and the roller is rotatably arranged in the end of the trigger bracket 63, and the lower ends of the two swing brackets 64 extend backwards and are hinged to the rear side of the hanging barrel part 21 to form the rotation point 7, and the distance between the rotation point 7 and the roller is smaller than the distance between the rotation point 7 and the upper half of the pressing plate 62. Thus, a laborious lever is formed between the roller and the pressing plate 62 with the rotation point 7 as the fulcrum, and the small-angle swing of the roller can drive the pressing plate 62 to swing at a large angle, so as to stably realize the locking and releasing of the trash can 9, and at the same time, when the trigger bracket 63 in the middle locks the locking mechanism 6 through the cooperation of the roller and the locking part, the swing brackets 64 on both sides can be used to assist in limiting the pressing plate 62, thereby improving the stability of the pressing and locking of the pressing plate 62.

[0044] In order to improve the adaptability of the locking mechanism 6, the left and right sides of the trigger bracket 63 and the swing bracket 64 are respectively provided with vertically extending adjustment holes 65, and the trigger bracket 63 and the swing bracket 64 are respectively screwed to the pressing plate 62 through a plurality of screwing components 66 in cooperation with the corresponding adjustment holes 65. Specifically, the screwing components 66 include screws screwed to the lower half of the pressing plate 62 and nuts screwed to the front end of the screws and abutting against the front side of the adjustment holes 65. Thus, the relative positions between the hinge, the roller and the pressing plate 62 can be adjusted by changing the height of the screwing components 66 and the locking position of the adjustment barrel, thereby adapting to the lifting and dumping devices with different specifications, thereby improving the adaptability of the locking mechanism 6.

[0045] In order to increase the swing stroke of the lifting and flipping mechanism, the fixed frame 1 is provided with two and is symmetrically arranged on the left and right. The driving member 3 is located between the two fixed frames 1 and includes a left and right symmetrical driving rod 32, a support plate 33 fixed to the rear side of the two driving rods 32, and a sleeve 34 fixed transversely to the lower end of the two driving rods 32. Therefore, the lateral width of the driving member 3 is increased by the arrangement of the two driving rods 32 and the support plate 33, and the lateral stability of the driving member 3 is improved when it is driven by the driving device 5 to swing up and down. The upper end of the driving rod 32 is rotationally connected to the front part of the fixed frame 1 and the lower part is tilted and folded backward to form a rear expansion part 321 rotationally connected to the front side of the flipping frame 2 through the sleeve 34. A hinge part 322 hinged to the telescopic end of the driving device 5 is extended toward each other between the folded parts of the two driving rods 32. Thus, by setting the rear expansion part 321, when the telescopic end of the driving device 5 pushes the driving member 3 to swing upward, the lower end of the rear expansion part 321 can push the flip frame 2 to swing upward at a larger angle, thereby improving the stability of the flip frame 2 driving the trash can 9 to lift, flip and dump materials, avoiding the situation that the trash can 9 is not inclined enough and the garbage cannot be completely dumped out, and also making the trash can 9 driven to lift and flip until the opening is facing downward. The opening is located further forward to avoid garbage falling to the outside of the feed port 81 and polluting the environment. At the same time, by setting the support plate 33, after the guide member 31 pushes the locking mechanism 6 to lock the trash can 9, the pressure on the guide member 31 can be transmitted to the two driving rods 32 through the support plate 33, and then transmitted to the fixed bracket, the flip frame 2 and the driving device 5, which can avoid stress concentration and improve the overall structural stability of the lifting and flipping mechanism.

[0046] In order to improve the supporting strength of the guide plate, the lower part of the support plate 33 is tilted backward and folded to form a support part 331 adapted to the rear expansion part 321, and the guide member 31 is arranged on the support part 331, and the left and right sides of the guide member 31 are symmetrically and vertically fixed with reinforcement plates 332 fixed to the support part 331, and the two reinforcement plates 332 correspond to the clamping parts 311 respectively, and the front side of the support part 331 is fixed with a reinforcement rod 333 whose two ends are fixed to the two rear expansion parts 321, and the reinforcement rod 333 corresponds to the two reinforcement plates 332, and the folded part of the support plate 33 and the place where the guide member 31 and the reinforcement plate 332 are not set are respectively provided with a mounting hole 335 and a plurality of de-weighting holes 334, specifically, the de-weighting hole 334 is set as a large-area square hole, and a plurality of the de-weighting holes 334 are set as circular holes. The reinforcing plate 332 and the reinforcing rod 333 are added to further transmit the pressure exerted by the guide member 31 after pushing the locking mechanism 6 to lock the trash can 9 to the support plate 33 and the two driving rods 32, and then to the fixed bracket, the flip frame 2 and the driving device 5, thereby further strengthening the overall structural strength of the driving member 3, strengthening the supporting strength of the guide member 31, improving the stability and firmness of the guide member 31 pushing the locking mechanism 6 to lock the trash can 9, and reducing the risk of the guide member 31 being damaged, resulting in the locking failure of the locking mechanism 6 and causing the trash can 9 to fall when emptying. At the same time, through the provision of a mounting hole 335 and a plurality of deweighting holes 334, it is convenient to align the telescopic end of the driving device 5 with the hinge part 322 for hinged installation, and the support plate 33 can reduce its own weight while achieving the corresponding effect, thereby reducing the burden on the fixed frame 1 and the telescopic end of the driving device 5.

[0047] In order to improve the connection strength between the flip frame 2 and the fixed frame 1, the number of the follower members 4 is set to two and they are symmetrically located on the left and right sides of the driving member 3. The upper ends of the two followers 4 are respectively hinged to the rear end of the fixed frame 1, and the lower ends are respectively hinged to the left and right sides of the top of the flip frame 2.

[0048] In order to improve the stability of the turning frame 2 supporting the trash can 9, a support rod 22 is provided at the rear lower end of the turning frame 2, and the hanging bucket part 21 is configured as a plurality of hanging teeth extending upward, and the upper edge of the trash can 9 is hung on the hanging teeth and the front side abuts against the support rod 22.

[0049] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A small lifting and dumping device, characterized in that: include: A fixing frame (1) is installed at the rear side of a material inlet (81) of a corresponding garbage truck (8); A turning frame (2) is located behind the fixed frame (1) and is provided with a bin hanging portion (21) for hanging a corresponding trash bin (9); A driving member (3) and a driven member (4) are arranged at intervals, wherein the upper ends of the driving member (3) and the driven member (4) are respectively rotatably connected to the fixing frame (1), and the lower ends are respectively rotatably connected to the flip frame (2), and a guide member (31) protruding backwards is provided at the rear middle part of the driving member (3), and a protruding clamping portion (311) and a recessed unlocking portion (312) are sequentially provided at the rear part of the guide member (31) from top to bottom; A driving device (5), rotatably disposed at the lower side of the feeding port (81) and having a telescopic end rotatably connected to the turning frame (2); A locking mechanism (6) is located at the rear side of the barrel hanging part (21) and the lower end is rotatably connected to the flip frame (2) to form a rotation point (7). The front side of the locking mechanism (6) is provided with a trigger member (61) that movably abuts against the unlocking part (312), and the upper part is provided with a pressure plate (62) corresponding to the barrel hanging part (21); when the driving device (5) drives the driving member (3) to swing upward to drive the flip frame (2) and the driven member (4) to swing upward, the guide member (31) pushes the trigger member (61) to move to the side of the clamping part (311) away from the unlocking part (312), so that the locking mechanism (6) swings around the rotation point (7) toward the barrel hanging part (21) until the pressure plate (62) clamps the trash can (9).

2. A small lifting and dumping device as claimed in claim 1, characterized in that: The trigger member (61) is configured as a roller that rolls against the unlocking portion (312); the unlocking portion (312) is an arc-shaped depression; the clamping portion (311) is an arc-shaped protrusion; the rear arc-shaped protrusion of the guide member (31) is provided with a limiting portion (313) located at the lower side of the unlocking portion (312); the clamping portion (311), the unlocking portion (312) and the limiting portion (313) are sequentially arranged in an arc-shaped transition; the lower side depression of the guide member (31) is provided with a clearance groove (314) located between the limiting portion (313) and the driving member (3).

3. A small lifting and dumping device as claimed in claim 2, characterized in that: The pressing plate (62) is configured to be L-shaped with an opening facing backwards. The front side of the lower half of the pressing plate (62) is detachably provided with a trigger bracket (63) located in the middle and with the end extending downwards, and swing brackets (64) located on the left and right sides of the trigger bracket (63). The roller is rotatably arranged in the end of the trigger bracket (63). The lower ends of the two swing brackets (64) extend backwards and are hinged to the rear side of the hanging barrel part (21) to form the rotation point (7). The distance between the rotation point (7) and the roller is smaller than the distance between the rotation point (7) and the upper half of the pressing plate (62).

4. A small lifting and dumping device as claimed in claim 3, characterized in that: The trigger bracket (63) and the swing bracket (64) are respectively provided with vertically extending adjustment holes (65) on the left and right sides. The trigger bracket (63) and the swing bracket (64) are respectively screwed to the pressure plate (62) by cooperating with the corresponding adjustment holes (65) through a plurality of screw-connecting components (66).

5. A small lifting and dumping device as claimed in claim 1, characterized in that: The fixing frame (1) is provided with two and is symmetrically arranged on the left and right sides. The driving member (3) is located between the two fixing frames (1) and comprises a driving rod (32) symmetrically arranged on the left and right sides, a supporting plate (33) fixedly arranged on the rear sides of the two driving rods (32), and a sleeve (34) fixedly arranged transversely on the lower ends of the two driving rods (32). The upper end of the driving rod (32) is rotatably connected to the front part of the fixing frame (1), and the lower part is tilted and folded backward to form a rear expansion part (321) rotatably connected to the front side of the flip frame (2) through the sleeve (34). A hinge part (322) hinged to the telescopic end of the driving device (5) is extended toward each other between the folded parts of the two driving rods (32).

6. A small lifting and dumping device as claimed in claim 5, characterized in that: The lower part of the support plate (33) is tilted and folded backward to form a support part (331) adapted to the rear expansion part (321); the guide member (31) is arranged on the support part (331); the left and right sides of the guide member (31) are symmetrically and vertically fixed with reinforcement plates (332) fixed to the support part (331); the two reinforcement plates (332) respectively correspond to the clamping parts (311); the front side of the support part (331) is fixed with a reinforcement rod (333) whose two ends are fixed to the two rear expansion parts (321); the reinforcement rod (333) corresponds to the two reinforcement plates (332); and a mounting hole (335) and a plurality of deweighting holes (334) are respectively provided at the folded part of the support plate (33) and at the part where the guide member (31) and the reinforcement plate (332) are not provided.

7. A small lifting and dumping device as claimed in claim 5, characterized in that: The number of the driven members (4) is set to two and they are symmetrically located on the left and right sides of the driving member (3); the upper ends of the two driven members (4) are respectively hinged to the rear end of the fixing frame (1), and the lower ends are respectively hinged to the left and right sides of the top of the flip frame (2).

8. A small lifting and dumping device as claimed in claim 1, characterized in that: A support rod (22) is provided at the rear of the lower end of the flip frame (2), and the barrel hanging portion (21) is configured as a plurality of hanging teeth extending upwards, the upper edge of the trash can (9) is hung on the hanging teeth and the front side abuts against the support rod (22).