CN216582229U

CN216582229U - Mechanical arm lifting mechanism and garbage transfer vehicle comprising same

Info

Publication number: CN216582229U
Application number: CN202122976208.5U
Authority: CN
Inventors: 刘春超
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-05-24
Anticipated expiration: 2031-11-30

Abstract

The utility model relates to a mechanical arm lifting mechanism which is arranged on one side of the outer wall of a transfer vehicle cabin, and comprises a mechanical arm support, a lifting crank arm, a bucket lifting plate, a bucket pressing plate and a hydraulic cylinder, wherein the mechanical arm support is fixed on the outer wall of the transfer vehicle cabin; the bucket lifting plate comprises a first bucket lifting plate and a second bucket lifting plate, wherein one end of the first bucket lifting plate is connected with one end of the second bucket lifting plate through a support hinge; simultaneously, a garbage transfer vehicle comprising the mechanical arm lifting mechanism is also designed. The mechanical arm lifting mechanism and the garbage transfer trolley comprising the same, which are provided by the technical scheme, can effectively solve the problems that the existing mechanical arm is complex in structure, inconvenient to use and difficult to ensure garbage dumping efficiency.

Description

Mechanical arm lifting mechanism and garbage transfer vehicle comprising same

Technical Field

The utility model relates to the technical field of lifting mechanisms, in particular to a mechanical arm lifting mechanism and a garbage transfer trolley comprising the same.

Background

The urban garbage disposal is a big problem of environmental protection and resource recycling, along with the improvement of the living standard of people, people generate a large amount of domestic garbage in daily life, and the traditional garbage transfer vehicle has the disadvantages of high labor intensity of manual loading and unloading, severe working environment and low garbage transfer efficiency. The existing transfer vehicle also has the advantages that the mechanical arm is used for lifting the garbage can, but most of the existing transfer vehicle are complex in structure and inconvenient to use, and the efficient and quick garbage dumping efficiency is difficult to guarantee.

Therefore, it is necessary to design a new technical solution to comprehensively solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a mechanical arm lifting mechanism and a garbage transfer vehicle comprising the same, which can effectively solve the problems that the existing mechanical arm is complex in structure, inconvenient to use and difficult to ensure garbage dumping efficiency.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a mechanical arm lifting mechanism is arranged on one side of the outer wall of a transfer vehicle cabin and comprises a mechanical arm support, a lifting crank arm, a lifting barrel plate, a barrel pressing plate and a hydraulic cylinder, wherein the mechanical arm support is fixed on the outer wall of the transfer vehicle cabin; the barrel lifting plate comprises a first barrel lifting plate and a second barrel lifting plate, one end of the first barrel lifting plate is connected with the other end of the lifting crank arm through a bracket hinge, the back of the end, provided with the bracket hinge, of the first barrel lifting plate is connected with the other end of the lifting crank arm through a barrel lifting plate bracket and a barrel lifting plate hydraulic cylinder, one end, far away from the bracket hinge, of the first barrel lifting plate is hinged with the other end of the lifting crank arm through a connecting lug, one end, far away from the bracket hinge, of the second barrel lifting plate is provided with a barrel pressing plate through a barrel pressing plate hydraulic cylinder, and the second barrel lifting plate is connected with the surface, far away from the bracket hinge, of the first barrel lifting plate, of the second barrel lifting plate through a barrel lifting plate connecting rod;

the lifting hydraulic cylinder extends to drive the lifting crank arm to lift towards one side far away from the transfer car bin, the bracket hinge is linked with the bucket lifting plate connecting rod to drive the second bucket lifting plate to be far away from the first bucket lifting plate, and the garbage can groove is clamped; the barrel pressing plate hydraulic cylinder extends to drive the barrel pressing plate to clamp the upper edge of the garbage barrel, the lifting hydraulic cylinder continues to lift upwards to a preset height, and garbage is dumped into the transfer car bin; and then the lifting hydraulic cylinder retracts to the initial position, the barrel pressing plate hydraulic cylinder retracts, and the garbage can is put down.

The lower end of the mechanical arm support is provided with a pushing mechanism towards one side of the transfer car bin, the pushing mechanism comprises a pushing hydraulic cylinder, a moving frame and a dovetail guide rail which are arranged in parallel, the fixed end of the pushing hydraulic cylinder is provided with a fixed support, and the fixed support is connected with the dovetail guide rail and the outer wall of the transfer car bin; the telescopic end of the pushing hydraulic cylinder is connected with the lower end of the mechanical arm support, and the lower end of the mechanical arm support is driven to move along the telescopic direction of the pushing hydraulic cylinder.

Further, the lower part of the mechanical arm support is also provided with a limiting support for preventing the barrel lifting plate support from rotating excessively.

Meanwhile, the utility model also provides a garbage transfer vehicle comprising the mechanical arm lifting mechanism, and the garbage transfer vehicle further comprises a push plate extrusion mechanism and a rear door lifting locking mechanism which are used for compacting loose garbage.

The rear door lifting and locking mechanism comprises a fixed rod fixed on the inner wall of the transfer car cabin, a Y-shaped connecting rod connected with the rear door, a first hydraulic cylinder used for driving the connecting rod to rotate and a door hook assembly used for locking, wherein the door hook assembly comprises a rear door hook and a door hole which is matched with the rear door hook and is arranged on the rear door; the Y-shaped connecting rod comprises two side rods and a main rod, the ends of the two side rods are respectively fixed on the rear door, a connecting rod is fixed in the middle of the main rod, and one end, far away from the main rod, of the connecting rod is rotatably connected with the end of the fixed rod and the telescopic end of the first hydraulic cylinder; one end of the first hydraulic cylinder, which is far away from the telescopic end, is connected with the rear door hook through the connecting rod plate.

The scheme further includes that the push plate extrusion mechanism is arranged on the inner wall of the transfer car bin, and the push plate extrusion mechanism comprises slide rails arranged on the inner walls of two sides of the transfer car bin, a push plate arranged on the slide rails and connected with the two slide rails, and a second hydraulic cylinder used for pushing the push plate to move along the length direction of the slide rails.

The mechanical arm lifting mechanism comprises a mechanical arm support, a lifting crank arm, a bucket lifting plate, a bucket pressing plate and a hydraulic cylinder, wherein the hydraulic cylinder comprises a lifting hydraulic cylinder, a bucket lifting plate hydraulic cylinder and a bucket pressing plate hydraulic cylinder; the barrel pressing plate hydraulic cylinder extends to drive the barrel pressing plate to clamp the upper edge of the garbage barrel, the lifting hydraulic cylinder continues to lift upwards to a preset height, the garbage is dumped into the transfer car bin, and the barrel lifting plate hydraulic cylinder is driven to enable all residual garbage in the barrel to be dumped completely; and then the lifting hydraulic cylinder retracts to the initial position, the barrel pressing plate hydraulic cylinder retracts, and the garbage can is put down, so that the single-barrel loading and unloading process of the garbage can is completed. This simple structure is convenient, and loading and unloading are reliable and stable, effectively solve current arm structure complicacy, and the security is difficult to guarantee that rubbish pours the problem of efficiency.

Meanwhile, the utility model also provides a garbage transfer truck comprising the mechanical arm lifting mechanism, which can effectively improve the garbage loading efficiency, and the garbage transfer truck is provided with the push plate extrusion mechanism and the rear door lifting locking mechanism, realizes the extrusion of loose garbage by using the push plate extrusion mechanism, and realizes the quick and efficient opening and closing of the rear door by using the rear door lifting locking mechanism, thereby improving the efficiency of the whole garbage transfer process.

Drawings

FIG. 1 is a schematic front view of a robotic arm lift mechanism according to the present invention;

FIG. 2 is a schematic side view of the robot arm lift mechanism of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is a schematic structural view of the pushing mechanism of the present invention;

FIG. 5 is a schematic structural diagram of the push plate pressing mechanism (in a second hydraulic cylinder compression state) according to the present invention;

FIG. 6 is a schematic structural diagram of the push plate pressing mechanism (second hydraulic cylinder extended state) according to the present invention;

FIG. 7 is a schematic structural view of a rear door lift latch mechanism (rear door open) according to the present invention;

fig. 8 is a schematic structural view of a rear door lift locking mechanism (rear door closed state) according to the present invention.

In the figure: 10. a transfer car bin; 11. a rear door; 111. a door opening; 20. a mechanical arm lifting mechanism; 21. a first pail plate; 211. a pail plate support; 212. connecting lugs; 213. a bucket lifting plate connecting rod; 214. a bracket hinge; 22. a second pail panel; 221. a rubber pad; 23. pressing a barrel plate; lifting hydraulic cylinders; 25. a lift crank arm; 26. a mechanical arm support; 261. a limiting bracket; 27. a bucket lifting plate hydraulic cylinder; 28. a barrel pressing plate hydraulic cylinder; 30. a rear door lift locking mechanism; a Y-shaped link; 311. a connecting rod; 32. fixing the rod; 33. a first hydraulic cylinder; 34. a link plate; 341. rotating the hole; 35. a rear door hook; 351. a straight hook section; 352. a hook section; 36. a return spring; 40. a push plate extrusion mechanism; a push plate; 42. a second hydraulic cylinder; 43. a slide rail; 50. a pushing mechanism; 51. a movable frame; 52. a dovetail rail; 53. a pushing hydraulic cylinder; a fixed bracket; 55. and a reinforcing plate.

Detailed Description

In order that the objects and advantages of the utility model will be more clearly understood, the following description is given in conjunction with the accompanying examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the utility model and does not strictly limit the scope of the utility model as specifically claimed.

Example 1

The technical scheme adopted in this embodiment is as shown in fig. 1 to 4, a mechanical arm lifting mechanism is arranged on one side of the outer wall of a transfer car bin 10, the mechanical arm lifting mechanism 20 comprises a mechanical arm support 26, a lifting crank arm 25, a lifting bucket plate, a bucket pressing plate 23 and a hydraulic cylinder, the mechanical arm support 26 is fixed on the outer wall of the transfer car bin 10, the hydraulic cylinder comprises a lifting hydraulic cylinder 24, a bucket lifting plate hydraulic cylinder 27 and a bucket pressing plate hydraulic cylinder 28, the fixed end of the lifting hydraulic cylinder 24 is fixed on the mechanical arm support 26, the telescopic end of the lifting hydraulic cylinder 24 is hinged with one end of the lifting crank arm 25, and the bucket lifting plate hydraulic cylinder 27, the bucket pressing plate hydraulic cylinder 28, the lifting bucket plate and the bucket pressing plate 23 are all arranged at the other end of the lifting crank arm 25; the bucket lifting plate comprises a first bucket lifting plate 21 and a second bucket lifting plate 22, one end of the first bucket lifting plate 21 is connected with the other end of the lifting crank arm 25 through a bracket hinge 214, the back of the end, provided with the bracket hinge 214, of the first bucket lifting plate 21 is connected with the other end of the lifting crank arm 25 through a bucket lifting plate bracket 211 and a bucket lifting plate hydraulic cylinder 27, one end, far away from the bracket hinge 214, of the first bucket lifting plate 21 is hinged with the other end of the lifting crank arm 25 through a connecting lug 212, one end, far away from the bracket hinge 214, of the second bucket lifting plate 22 is provided with a bucket pressing plate 23 through a bucket pressing plate hydraulic cylinder 28, and the second bucket lifting plate 22 is connected with the attached surface, far away from the bracket hinge 214, of the first bucket lifting plate 21 through a bucket lifting plate connecting rod 213; the position department that second pail board 22 and garbage bin ladle body pasted mutually still is equipped with cushion 221, and cushion 221 can play the cushioning effect on the one hand, and on the other hand can prevent that ladle body and pail board friction from damaging.

As shown in fig. 2 and 4, a pushing mechanism 50 is further disposed on one side of the lower end of the mechanical arm support 26 facing the transfer car cabin 10, the pushing mechanism 50 includes a pushing hydraulic cylinder 53, a moving frame 51 and a dovetail guide rail 52 which are arranged in parallel, wherein the moving frame 51 and the dovetail guide rail 52 are connected with the mechanical arm support 26, and the connecting portions are connected by embedded reinforcing rib plates 55; a fixed bracket 54 is arranged at the fixed end of the pushing hydraulic cylinder 53, and the fixed bracket 54 is connected with the dovetail guide rail 52 and the outer wall of the transfer car bin 10; the telescopic end of the pushing hydraulic cylinder 53 is connected with the lower end of the mechanical arm support 26, and the pushing hydraulic cylinder drives the whole mechanical arm support 26 to move along the telescopic direction of the pushing hydraulic cylinder; the dovetail guide rail of the embodiment adopts a semi-closed linear guide rail, so that rated load can be ensured, and torque can be borne; in addition, arm support below still is equipped with and prevents that the excessive spacing support 261 of pail plate support rotation.

The use method of the mechanical arm lifting mechanism of the embodiment is as follows: after the vehicle is close to the garbage can, the hydraulic system drives the lifting hydraulic cylinder 24 to extend to drive the lifting crank arm 25 to lift, the support hinge 214 is linked with the lifting plate connecting rod 213, the lifting plate is unfolded by about 20 degrees, and the opening groove of the lifting plate extends into the groove; if the distance between the barrel lifting plate and the garbage can is not enough, the pushing hydraulic cylinder 53 is driven to extend forwards to the whole mechanical arm bracket, so that the barrel lifting plate is close to the garbage can groove, and the open groove of the barrel lifting plate extends into the garbage can groove to clamp the garbage can groove; then the barrel pressing plate hydraulic cylinder 28 extends to drive the barrel pressing plate 23 to clamp the upper edge of the garbage barrel, the lifting hydraulic cylinder 24 continuously lifts upwards for 150 degrees, and the garbage is dumped into the transfer car bin 10; driving a hydraulic cylinder of the barrel lifting plate to ensure that residual garbage in the barrel is completely dumped; and then the lifting hydraulic cylinder 24 retracts to the initial position, the garbage can is put down, and then the hydraulic cylinder 28 of the garbage pressing plate is driven to return to finish the loading and unloading of the single can.

Example 2

The technical solution adopted by the embodiment is as shown in fig. 1-8, the garbage transfer vehicle comprises a mechanical arm lifting mechanism 20, a push plate squeezing mechanism 40 for compacting loose garbage and a rear door lifting locking mechanism 30.

As shown in fig. 1 to 3, the mechanical arm lifting mechanism 20 is disposed on one side of the outer wall of the transfer car bin 10, and includes a mechanical arm support 26, a lifting crank arm 25, a bucket lifting plate, a bucket pressing plate 23, and a hydraulic cylinder, the mechanical arm support 26 is fixed on the outer wall of the transfer car bin 10, the hydraulic cylinder includes a lifting hydraulic cylinder 24, a bucket lifting plate hydraulic cylinder 27, and a bucket pressing plate hydraulic cylinder 28, a fixed end of the lifting hydraulic cylinder 24 is fixed on the mechanical arm support 26, a telescopic end of the lifting hydraulic cylinder 24 is hinged to one end of the lifting crank arm 25, and the bucket lifting plate hydraulic cylinder 27, the bucket pressing plate hydraulic cylinder 28, the bucket lifting plate and the bucket pressing plate 23 are all disposed at the other end of the lifting crank arm 25; the bucket lifting plate comprises a first bucket lifting plate 21 and a second bucket lifting plate 22, one end of the first bucket lifting plate 21 is connected with the other end of the lifting crank arm 25 through a bracket hinge 214, the back of the end of the first bucket lifting plate 21, which is provided with the bracket hinge 214, is connected with the other end of the lifting crank arm 25 through a bucket lifting plate bracket 211 and a bucket lifting plate hydraulic cylinder 27, one end of the first bucket lifting plate 21, which is far away from the bracket hinge 214, is hinged with the other end of the lifting crank arm 25 through a connecting lug 212, one end of the second bucket lifting plate 22, which is far away from the bracket hinge 214, is provided with a bucket pressing plate 23 through a bucket pressing plate hydraulic cylinder 28, and the second bucket lifting plate 22 is connected with the attached surface of the first bucket lifting plate 21, which is far away from the bracket hinge 214, through a bucket lifting plate connecting rod 213; the position department that second pail board 22 and garbage bin ladle body pasted mutually still is equipped with cushion 221, and cushion 221 can play the cushioning effect on the one hand, and on the other hand can prevent that ladle body and pail board friction from damaging.

As shown in fig. 2 and 4, a pushing mechanism 50 is further disposed on one side of the lower end of the mechanical arm support 26 facing the transfer car cabin 10, the pushing mechanism 50 includes a pushing hydraulic cylinder 53, a moving frame 51 and a dovetail guide rail 52 which are arranged in parallel, wherein the moving frame 51 and the dovetail guide rail 52 are connected with the mechanical arm support 26, and the connecting portions are connected by embedded reinforcing rib plates 55; a fixed bracket 54 is arranged at the fixed end of the pushing hydraulic cylinder 53, and the fixed bracket 54 is connected with the dovetail guide rail 52 and the outer wall of the transfer car bin 10; the telescopic end of the pushing hydraulic cylinder 53 is connected with the lower end of the mechanical arm support 26, and the pushing hydraulic cylinder drives the whole mechanical arm support 26 to move along the telescopic direction of the pushing hydraulic cylinder; the dovetail guide rail of the embodiment adopts a semi-closed linear guide rail, so that rated load can be ensured, and torque can be borne; in addition, arm support below still is equipped with and prevents that the excessive spacing support 261 of pail board support rotation.

As shown in fig. 5 and fig. 6, the push plate squeezing mechanism 40 is disposed on the inner wall of the transfer car compartment 10, and the push plate squeezing mechanism 40 includes slide rails 43 disposed on the inner walls of both sides of the transfer car compartment 10, a push plate 41 disposed on the slide rails 43 and connected to the two slide rails 43, and a second hydraulic cylinder 42 for pushing the push plate 41 to move along the length direction of the slide rails 43; the two second hydraulic cylinders 42 of the embodiment are arranged in a crossed manner, the telescopic ends of the two second hydraulic cylinders 42 are respectively fixed below the push plate 41, and the other ends of the two second hydraulic cylinders 42 are respectively fixed on the inner wall of the transfer car bin 10; the loose garbage is compacted through the reciprocating motion of the push plate and the slide rail.

As shown in fig. 7 and 8, the rear door lift locking mechanism 30 includes a fixing rod 32 fixed on the inner wall of the transfer car cabin 10, a Y-shaped link 31 connected to the rear door 11, a first hydraulic cylinder 33 for driving the Y-shaped link 31 to rotate, and a door hook assembly for locking, the door hook assembly includes a rear door hook 35 and a door hole 111 provided on the rear door 11 for cooperating with the rear door hook 35; the rear door hook 35 comprises a straight hook section 351 and a hook section 352 which are integrally formed, wherein the tail end of the straight hook section 351 is hinged with the connecting rod plate 34, and the middle part of the hook section 352 is rotatably connected to the rear end wall of the transfer car cabin 10 through a return spring 36. The Y-shaped connecting rod 31 comprises two side rods and a main rod, the ends of the two side rods are respectively fixed on the rear door 11, a connecting rod 311 is fixed in the middle of the main rod, and one end of the connecting rod 311 far away from the main rod is rotatably connected with the end of the fixed rod 32 and the telescopic end of the first hydraulic cylinder 33; one end of the first hydraulic cylinder 33 far away from the telescopic end is connected with the rear door hook 35 through the connecting rod plate 34, the middle part of the connecting rod plate 34 is provided with a rotating hole 341, and a connecting bolt penetrates through the rotating hole 341 and is fixed on the bracket of the transfer car cabin 10. The rear door hook 35 is opened, the first hydraulic cylinder 33 extends, and the Y-shaped connecting rod 31 is driven to rotate outwards to drive the rear door 11 to be opened; after the garbage is dumped, the first hydraulic cylinder 33 stretches and retracts to drive the Y-shaped connecting rod 31 to rotate inwards to drive the rear door 11 to be closed, and the rear door hook 35 is closed after the rear door 11 is in place.

The garbage transfer vehicle of the embodiment is used as follows: after the vehicle is close to the garbage can, the hydraulic system drives the lifting hydraulic cylinder 24 to extend to drive the lifting crank arm 25 to lift, the support hinge 214 is linked with the lifting plate connecting rod 213, the lifting plate is unfolded by about 20 degrees, and the opening groove of the lifting plate extends into the groove; if the distance between the barrel lifting plate and the garbage bin is not enough, the pushing hydraulic cylinder 53 is driven to extend forwards to the whole mechanical arm bracket, so that the barrel lifting plate is close to the garbage bin groove, and the open groove of the barrel lifting plate extends into the bin groove to clamp the garbage bin groove; then the barrel pressing plate hydraulic cylinder 28 extends to drive the barrel pressing plate 23 to clamp the upper edge of the garbage barrel, and the lifting hydraulic cylinder 24 continuously lifts upwards for about 150 degrees, so that the garbage is dumped into the transfer car bin 10; the barrel lifting plate hydraulic cylinder 27 is driven to move, so that all the residual garbage in the barrel is dumped completely; and then lifting the hydraulic cylinder 24 to return to 150 degrees, putting down the garbage can, and driving the hydraulic cylinder 28 of the garbage pressing plate to return to finish loading and unloading of the single can.

Then the hydraulic system drives the second hydraulic cylinder 42 to extend and retract, so that the push plate 41 reciprocates along the slide rail 43 to compact the loose garbage; after the garbage is loaded, the hydraulic oil pump drives the first hydraulic cylinder 33, the rear door hook 35 is opened, and the lifting of the rear door is synchronously performed, so that the garbage in the bin of the transfer vehicle is poured into the transfer groove, and a transfer process is completed.

The garbage transfer vehicle adopts the combination of electric and hydraulic, and is matched with a rear door lifting locking mechanism, a push plate extrusion mechanism and a mechanical arm lifting mechanism for use, so that mechanical transmission parts are linked, structural parts are divided separately, functions are determined, linkage reaction is quick, various automatic process flows are realized, next cycle is realized, stepless speed regulation is realized, the operation state is stable and reliable, and safety measures are complete.

The present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent changes and substitutions without departing from the principle of the present invention after learning the content of the present invention, and these equivalent changes and substitutions should be considered as belonging to the protection scope of the present invention.

Claims

1. The utility model provides a mechanical arm lifting mechanism establishes the one side at transport car storehouse outer wall, its characterized in that: the mechanical arm lifting mechanism comprises a mechanical arm support, a lifting crank arm, a barrel lifting plate, a barrel pressing plate and a hydraulic cylinder, the mechanical arm support is fixed on the outer wall of the transfer car cabin, the hydraulic cylinder comprises a lifting hydraulic cylinder, a barrel lifting plate hydraulic cylinder and a barrel pressing plate hydraulic cylinder, the fixed end of the lifting hydraulic cylinder is fixed on the mechanical arm support, the telescopic end of the lifting hydraulic cylinder is hinged with one end of the lifting crank arm, and the barrel lifting plate hydraulic cylinder, the barrel pressing plate hydraulic cylinder, the barrel lifting plate and the barrel pressing plate are all arranged at the other end of the lifting crank arm; the barrel lifting plate comprises a first barrel lifting plate and a second barrel lifting plate, one end of the first barrel lifting plate is connected with the other end of the lifting crank arm through a bracket hinge, the back of the end, provided with the bracket hinge, of the first barrel lifting plate is connected with the other end of the lifting crank arm through a barrel lifting plate bracket and a barrel lifting plate hydraulic cylinder, one end, far away from the bracket hinge, of the first barrel lifting plate is hinged with the other end of the lifting crank arm through a connecting lug, one end, far away from the bracket hinge, of the second barrel lifting plate is provided with a barrel pressing plate through a barrel pressing plate hydraulic cylinder, and the second barrel lifting plate is connected with the surface, far away from the bracket hinge, of the first barrel lifting plate, of the second barrel lifting plate through a barrel lifting plate connecting rod;

2. The robotic arm lift mechanism of claim 1, wherein: the pushing mechanism is further arranged on one side, facing the transfer car bin, of the lower end of the mechanical arm support and comprises a pushing hydraulic cylinder, a moving frame and a dovetail guide rail which are arranged in parallel, a fixed support is arranged at the fixed end of the pushing hydraulic cylinder, and the fixed support is connected with the dovetail guide rail and the outer wall of the transfer car bin; the telescopic end of the pushing hydraulic cylinder is connected with the lower end of the mechanical arm support, and the lower end of the mechanical arm support is driven to move along the telescopic direction of the pushing hydraulic cylinder.

3. The robotic arm lift mechanism of claim 1, wherein: and a limiting support for preventing the barrel lifting plate support from rotating excessively is further arranged below the mechanical arm support.

4. A refuse transfer vehicle comprising the robot arm lifting mechanism according to any one of claims 1 to 3, characterized in that: the garbage transfer vehicle also comprises a push plate extrusion mechanism for compacting loose garbage and a rear door lifting locking mechanism.

5. The refuse transfer vehicle according to claim 4, characterized in that: the rear door lifting and locking mechanism comprises a fixed rod fixed on the inner wall of the transfer car bin, a Y-shaped connecting rod connected with the rear door, a first hydraulic cylinder used for driving the Y-shaped connecting rod to rotate and a door hook assembly used for locking, and the door hook assembly comprises a rear door hook and a door hole which is matched with the rear door hook and is arranged on the rear door; the Y-shaped connecting rod comprises two side rods and a main rod, the ends of the two side rods are respectively fixed on the rear door, a connecting rod is fixed in the middle of the main rod, and one end, far away from the main rod, of the connecting rod is rotatably connected with the end of the fixed rod and the telescopic end of the first hydraulic cylinder; one end of the first hydraulic cylinder, which is far away from the telescopic end, is connected with the rear door hook through the connecting rod plate.

6. The refuse transfer vehicle according to claim 4, characterized in that: push pedal extrusion mechanism establishes at transport car storehouse inner wall, and push pedal extrusion mechanism is including establishing the slide rail at transport car storehouse both sides inner wall, establishing the push pedal on the slide rail and connect two slide rails to and the second hydraulic cylinder that promotes the push pedal along slide rail length direction activity.