Automatic loading and unloading structure and loading and unloading method of garbage truck

Abstract

The invention relates to an automatic loading and unloading structure and method for a garbage truck. The automatic loading and unloading structure comprises a can hanging mechanism, a pressing plate mechanism installed on the can hanging mechanism and a hanging can lifting and dumping mechanism installed on one side of the can hanging mechanism. The barrel hanging mechanism comprises a barrel hanging plate, and hanging teeth are arranged on the barrel hanging plate; the hanging barrel lifting and dumping mechanism comprises a lifting frame hinged to the hanging barrel plate, a supporting seat hinged to the lifting frame and connected with a vehicle body, a lifting oil cylinder hinged between the hanging barrel plate and the supporting seat, and a dumping oil cylinder hinged between the lifting frame and the supporting seat; and the clamping mechanism comprises holding and clamping arms rotationally mounted on the lifting frame, a first driving part for driving the two holding and clamping arms to move transversely, and a second driving part for driving the two holding and clamping arms to rotate. Automatic garbage dumping operation is achieved, the stability of the garbage can in the lifting and dumping process is improved, the structural safety is enhanced, manual operation is reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of garbage trucks, and in particular relates to an automatic loading and unloading structure and a loading and unloading method of a garbage truck. Background Art

[0002] Self-loading garbage trucks are mainly used for urban garbage collection and transportation. As people's consumption level has greatly improved, domestic garbage will inevitably increase rapidly. The huge amount and speed of garbage generation require a more efficient method of garbage transportation. Self-loading garbage trucks can automatically load and unload garbage bins through their own loading and unloading devices, which can greatly reduce the labor intensity of sanitation workers, thereby saving management and operation costs.

[0003] However, when the existing self-loading and unloading garbage truck lifts the garbage bin into place, the garbage bin generally swings forward to a certain extent due to its own inertia, and the hanging teeth and pressure plates that restrict the movement of the garbage bin cannot effectively restrict the garbage bin from rushing forward or tilting backward. The garbage bin is subject to long-term wear and tear, is easily damaged, and even falls off, posing a threat to the safety of the self-loading and unloading garbage truck operator. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide an automatic loading and unloading structure and method for a garbage truck, which has high safety and ensures the accuracy and reliability of the garbage truck during loading and unloading operations.

[0005] The present invention adopts the following technical solution:

[0006] An automatic loading and unloading structure for a garbage truck, which is used to be installed at the rear end of the garbage truck body.

[0007] It includes a barrel hanging mechanism, a pressing plate mechanism installed on the barrel hanging mechanism, and a barrel hanging lifting and dumping mechanism installed on one side of the barrel hanging mechanism;

[0008] in,

[0009] The barrel hanging mechanism comprises a barrel hanging plate, on which hanging teeth are arranged, and the trash can is hung on the hanging teeth;

[0010] A pressing plate mechanism, comprising a pressing plate hinged to the upper end of the barrel hanging plate, and a turning cylinder driving the pressing plate to rotate along a hinge point between the pressing plate and the barrel hanging plate;

[0011] The bucket lifting and dumping mechanism comprises a lifting frame hinged on the bucket hanging plate, a support seat connected to the vehicle body hinged on the lifting frame, a lifting cylinder hinged between the bucket hanging plate and the support seat, and a dumping cylinder hinged between the lifting frame and the support seat;

[0012] It also includes a clamping mechanism, which is installed on the lifting frame, including a first driving component that rotates the clamping arms installed on the lifting frame, drives the two clamping arms to move laterally to adjust the clamping force, and a second driving component that drives the two clamping arms to rotate to adjust the clamping angle.

[0013] In a preferred embodiment of the present invention, it also includes a hydraulic and electrical control system installed on the vehicle body, and the tilting cylinder, the lifting cylinder and the dumping cylinder are all connected to the hydraulic and electrical control system through pipelines.

[0014] In a preferred embodiment of the present invention, a control device is installed on the lifting frame, a pressure sensor is installed on the pressure plate, and the pressure sensor, the first driving component and the second driving component are all electrically connected to the control device.

[0015] In a preferred embodiment of the present invention, the barrel hanging mechanism further comprises a receiving plate arranged at the lower end of the barrel hanging plate, the receiving plate protrudes outward from the barrel hanging plate and contacts the barrel wall of the trash can;

[0016] A rubber pad is installed on the contact surface between the receiving plate and the barrel wall.

[0017] In a preferred embodiment of the present invention, the first driving component includes a first driving motor, a gear is connected to the output end of the first driving motor, racks are respectively provided on both sides of the gear to mesh with the gear, and the two racks are respectively connected to the two clamping arms.

[0018] In a preferred embodiment of the present invention, the second driving component comprises a driving support mounted on the lifting frame, a rotating support hinged on the driving support, a rotating shaft is installed at the hinge of the driving support and the rotating support, one end of the rotating shaft is connected to the second driving motor, and the rotating shaft is fixedly connected to the rotating support;

[0019] The first driving component is installed on the rotating support and rotates along with the rotation of the rotating support.

[0020] In a preferred embodiment of the present invention, a limiting portion is installed on the side of the support seat facing the lifting frame, and the limiting portion is provided with a slot for clamping the lifting frame.

[0021] An automatic loading and unloading method for a garbage truck, the method specifically comprising the following steps:

[0022] Step 1: Move the trash can containing the trash onto the hanging mechanism, hook the hanging teeth on one side of the trash can, and at the same time, the pressing plate mechanism rotates downward to press the side of the trash can;

[0023] Step 2: The clamping mechanism drives the clamping arm to clamp the wall of the trash can;

[0024] Step 3: The piston rod of the lifting cylinder is extended and retracted to lift the trash can from the ground to the garbage loading and unloading port of the vehicle body, and the piston rod of the dumping cylinder is extended to push the lifting frame to rotate upward, and the garbage in the trash can is dumped from the loading and unloading port into the garbage truck compartment;

[0025] Step 4: Control the dumping cylinder and the lifting cylinder to move in the opposite direction, and at the same time drive the trash can to slide downward along the lifting frame until the trash can touches the ground;

[0026] Step 5: Control the clamping arm to release the barrel wall and rotate to the starting position. The pressure plate rotates in the opposite direction, releases the barrel mouth, and removes the trash can from the hanging teeth.

[0027] In a preferred embodiment of the present invention, in step three, during the process of the lifting cylinder and the dumping cylinder driving the trash can to move, the pressure sensor monitors the change in the pressure value of the pressure plate, transmits the signal to the control device, and adjusts the clamping force and clamping angle of the clamping mechanism.

[0028] In a preferred embodiment of the present invention, in step three, when the trash can is turned over to the maximum dumping angle, the second driving component controls the clamping mechanism to limit the position of the trash can.

[0029] In a preferred embodiment of the present invention, the support assembly includes a sliding seat and a first hinge seat slidably installed on one side of the support and arranged at intervals, and a second hinge seat slidably installed on the other side of the support, a plurality of second hinge seats are installed in parallel, a hinge plate is rotatably connected between the first hinge seat and the second hinge seat, a guide plate is fixedly installed on the sliding seat, and the end of the guide plate facing away from the sliding seat is hinged to the hinge plate.

[0030] Beneficial effects:

[0031] The automatic loading and unloading structure and method of a garbage truck of the present invention can rotate the clamping mechanism to one side of the bucket lifting and dumping mechanism, which does not affect the overall size of the garbage truck and does not affect road operation; the mechanical structure is adopted, which has good durability and is convenient and quick to maintain;

[0032] The present invention is provided with a clamping mechanism, and a motor is controlled by a control device to realize the action of the clamping mechanism, so as to change the position and angle of the clamping arm, and ensure the accuracy and reliability of the loading and unloading operation of the garbage truck through real-time monitoring and adjustment; when the garbage bin is turned over to the maximum dumping angle, the clamping mechanism is controlled by a motor to limit the position of the garbage bin, so as to effectively prevent the garbage bin from being thrown away after being turned over in place, thereby improving the operation safety and reducing the wear and damage of the garbage bin;

[0033] The present invention realizes the automated operation of garbage dumping, improves the stability of the garbage bin during the lifting and dumping process, enhances the structural safety, reduces manual operation, and improves the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A structural schematic diagram of an automatic loading and unloading structure of a garbage truck provided by the present invention;

[0035] Figure 2 A partial structural schematic diagram of an automatic loading and unloading structure of a garbage truck provided by the present invention;

[0036] Figure 3 A partial structural cross-sectional view of an automatic loading and unloading structure of a garbage truck provided by the present invention;

[0037] Figure 4 It is a schematic diagram of the installation structure of the clamping mechanism of the present invention;

[0038] Figure 5 A top view of the clamping mechanism of the present invention;

[0039] Figure 6 The present invention Figure 4 A partial enlarged view of point A.

[0040] In the figure: 1 barrel hanging mechanism, 11 barrel hanging plate, 12 hanging teeth, 13 receiving plate, 14 rubber pad;

[0041] 2 a pressing plate mechanism, 21 a pressing plate, 22 a turning cylinder;

[0042] 3 a bucket lifting and dumping mechanism, 31 a lifting frame, 32 a supporting seat, 33 a lifting cylinder, 34 a dumping cylinder, 35 a limiting part;

[0043] 4. Control device;

[0044] 5 clamping mechanism, 51 clamping arm, 52 first driving component, 521 first driving motor, 522 gear, 523 rack, 53 second driving component, 531 driving support, 532 rotating support, 533 rotating shaft, 534 second driving motor. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] like Figure 1-4 As shown, an automatic loading and unloading structure of a garbage truck is used to be installed at the rear end of the garbage truck body.

[0047] It includes a barrel hanging mechanism 1, a pressing plate mechanism 2 installed on the barrel hanging mechanism 1, and a barrel hanging lifting and dumping mechanism 3 installed on one side of the barrel hanging mechanism 1;

[0048] in,

[0049] The barrel hanging mechanism 1 comprises a barrel hanging plate 11, on which hanging teeth 12 are arranged, and the trash can is hung on the hanging teeth 12;

[0050] The pressing plate mechanism 2 includes a pressing plate 21 hinged to the upper end of the barrel hanging plate 11, and a turning cylinder 22 driving the pressing plate 21 to rotate along the hinge point between the pressing plate 21 and the barrel hanging plate 11;

[0051] The bucket lifting and dumping mechanism 3 includes a lifting frame 31 hinged on the bucket hanging plate 11, a support seat 32 connected to the vehicle body is hinged on the lifting frame 31, a lifting cylinder 33 hinged between the bucket hanging plate 11 and the support seat 32, and a dumping cylinder 34 hinged between the lifting frame 31 and the support seat 32;

[0052] It also includes a clamping mechanism 5, which is installed on the lifting frame 31, including a clamping arm 51 rotatably installed on the lifting frame 31, a first driving component 52 that drives the two clamping arms 51 to move laterally to adjust the clamping force, and a second driving component 53 that drives the two clamping arms 51 to rotate to adjust the clamping angle.

[0053] The working principle and beneficial effects of the above embodiments are as follows:

[0054] The trash can of the present invention is hung on the bucket hanging plate 11 by the hanging teeth 12, allowing the trash can to be quickly hung and unloaded. The pressing plate 21 is hinged to the upper end of the bucket hanging plate 11, and is driven to rotate along the hinge point by the turning cylinder 22, and cooperates with the bucket hanging mechanism 1 to fix one side of the trash can.

[0055] The lifting frame 31 is hinged on the barrel hanging plate 11, and the lifting and dumping actions of the garbage can are realized through the coordinated action of the lifting cylinder 33 and the dumping cylinder 34. The barrel hanging lifting and dumping mechanism 3 makes the garbage can be lifted to a certain height and then dumps the garbage to complete the unloading of the garbage;

[0056] The clamping mechanism 5 is mounted on the lifting frame 31, and includes a clamping arm 51 and two driving components. The clamping arm 51 can be laterally displaced to adjust the clamping force, and can also be rotated to adjust the clamping angle to ensure the stability of the trash can during the lifting and dumping process;

[0057] The automatic loading and unloading structure of a garbage truck of the present invention realizes the automated operation of dumping garbage, improves the stability of the garbage bin during the lifting and dumping process, enhances the structural safety, reduces manual operation, and improves the operation efficiency.

[0058] In one embodiment,

[0059] It also includes a hydraulic and electrical control system installed on the vehicle body, and the above-mentioned tilting cylinder 22, lifting cylinder 33 and dumping cylinder 34 are all connected to the hydraulic and electrical control system through pipelines;

[0060] The driver issues instructions through the operation interface. After receiving the instructions, the electrical control system controls the operation of the hydraulic oil pump and the electromagnetic control valve, thereby driving the actuators such as the tipping cylinder 22, the lifting cylinder 33 and the dumping cylinder 34 to complete the loading and unloading operations of the garbage bin.

[0061] In one embodiment,

[0062] A control device 4 is installed on the lifting frame 31, and a pressure sensor is installed on the pressing plate 21. The pressure sensor, the first driving component 52 and the second driving component 53 are all electrically connected to the control device 4.

[0063] The pressure sensor is installed on the pressure plate 21, and is used to monitor the pressure change value of the garbage bin during operation in real time, and feed back its monitoring value to the control device 4. The control device 4 is used to adjust the operation of the first drive component 52 and the second drive component 53 to change the position and angle of the clamping arm 51. Through real-time monitoring and adjustment, the accuracy and reliability of the loading and unloading operations of the garbage truck are ensured.

[0064] In one embodiment,

[0065] The barrel hanging mechanism 1 further includes a receiving plate 13 disposed at the lower end of the barrel hanging plate 11, the receiving plate 13 protrudes outward from the barrel hanging plate 11, and contacts the barrel wall of the trash can;

[0066] A rubber pad 14 is installed on the contact surface between the receiving plate 13 and the barrel wall;

[0067] The receiving plate 13 protrudes outward from the barrel hanging plate 11, and its main function is to provide additional support for the barrel wall of the trash can when the trash can is hung on the hanging teeth 12, disperse the weight of the trash can, reduce the pressure on the hanging teeth 12, and improve the durability and stability of the barrel hanging mechanism 1. The rubber pad 14 reduces the noise generated by the contact between the trash can and it, protects the barrel wall of the trash can from wear and tear, and increases the friction between it and the trash can.

[0068] In one embodiment, Figure 5-6 As shown,

[0069] The first driving component 52 includes a first driving motor 521, a gear 522 is connected to the output end of the first driving motor 521, racks 523 are respectively provided on both sides of the gear 522 to mesh with it, and the two racks 523 are respectively connected to the two clamping arms 51;

[0070] The gear 522 is connected to the output end of the first drive motor 521, and racks 523 are respectively meshed on both sides of the gear 522. The two racks 523 are respectively connected to the two clamping arms 51. When the gear 522 rotates, the linear motion of the racks 523 drives the clamping arms 51 to move laterally, thereby adjusting the clamping force of the clamping arms 51 on the trash can.

[0071] In one embodiment,

[0072] The second driving component 53 includes a driving support 531 mounted on the lifting frame 31, and a rotating support 532 hinged on the driving support 531. A rotating shaft 533 is installed at the hinge of the driving support 531 and the rotating support 532. One end of the rotating shaft 533 is connected to the second driving motor 534, and the rotating shaft 533 is fixedly connected to the rotating support 532.

[0073] The first driving component 52 is mounted on the rotating support 532 and rotates along with the rotation of the rotating support 532;

[0074] The driving support 531 is the fixed part of the second driving component 53, which is installed on the lifting frame 31 to provide support for the rotating support 532 and the rotating shaft 533. The rotating support 532 is hinged on the driving support 531, allowing the clamping arm 51 to rotate around the rotating shaft 533. The second driving motor 534 is connected to one end of the rotating shaft 533 and is responsible for providing power for the rotational movement. The rotation of the motor is transmitted to the rotating support 532 through the rotating shaft 533, thereby driving the rotation of the clamping arm 51; the first driving component 52 is installed on the rotating support 532, allowing the first driving component 52 to be able to perform lateral displacement while the clamping arm 51 rotates to adjust the clamping force.

[0075] The design of the second driving component 53 realizes the rotation adjustment of the clamping arm 51, and combined with the lateral displacement of the first driving component 52, realizes efficient, flexible and reliable clamping and limiting of the trash can.

[0076] In one embodiment,

[0077] A limiting portion 35 is installed on the side of the support seat 32 facing the lifting frame 31 . The limiting portion 35 is provided with a slot for clamping the lifting frame 31 to stabilize the positioning.

[0078] When the lifting frame 31 is inserted into the slot, the limiting portion 35 provides a stable supporting point to limit the movement of the lifting frame 31 , thereby ensuring the stability of the entire bucket lifting and dumping mechanism 3 .

[0079] An automatic loading and unloading method for a garbage truck, the method specifically comprising the following steps:

[0080] Step 1: Move the trash can containing trash onto the hanging mechanism 1, and the hanging teeth 12 hook the opening of one side of the trash can, while the pressing plate mechanism 2 rotates downward to press the opening of the side;

[0081] Step 2: The clamping mechanism 5 drives the clamping arm 51 to clamp the wall of the trash can;

[0082] Step 3: The piston rod of the lifting cylinder 33 is extended and retracted to lift the trash can from the ground to the trash loading and unloading port of the vehicle body, and the piston rod of the dumping cylinder 34 is extended to push the lifting frame 31 to rotate upward, and the trash in the trash can is dumped from the loading and unloading port into the garbage truck compartment;

[0083] Step 4: Control the dumping cylinder 34 and the lifting cylinder 33 to move in the opposite direction, and at the same time drive the trash can to slide downward along the lifting frame 31 until the trash can touches the ground;

[0084] Step 5: Control the clamping arm 51 to release the barrel wall and rotate to the starting position, and the pressing plate 21 rotates in the opposite direction to release the barrel mouth, and remove the trash can from the hanging teeth 12.

[0085] In step 3 above,

[0086] When the lifting cylinder 33 and the dumping cylinder 34 drive the trash can to move, the pressure sensor monitors the pressure value change of the pressure plate 21, transmits the signal to the control device 4, and adjusts the clamping force and clamping angle of the clamping mechanism 5.

[0087] In step 3 above,

[0088] When the trash can is turned over to the maximum dumping angle, the second driving component 53 controls the clamping mechanism 5 to limit the position of the trash can.

[0089] In summary:

[0090] The automatic loading and unloading structure and method of a garbage truck of the present invention can rotate the clamping mechanism to one side of the bucket lifting and dumping mechanism, which does not affect the overall size of the garbage truck and does not affect road operation; the mechanical structure is adopted, which has good durability and is convenient and quick to maintain;

[0091] The present invention controls the motor through a control device to realize the action of the clamping mechanism, so as to change the position and angle of the clamping arm, and ensures the accuracy and reliability of the loading and unloading operation of the garbage truck through real-time monitoring and adjustment; when the garbage bin is turned over to the maximum dumping angle, the clamping mechanism is controlled by the motor to limit the position of the garbage bin, effectively preventing the garbage bin from being thrown away after being turned over in place, thereby improving the operation safety and reducing the wear and damage of the garbage bin;

[0092] The present invention realizes the automated operation of dumping garbage, improves the stability of the garbage bin during the lifting and dumping process, enhances the structural safety, reduces manual operation, and improves the operation efficiency.

[0093] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above implementation is only to illustrate the technical concept and features of the present invention, and its purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and it cannot be used to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic loading and unloading structure for a garbage truck, which is used to be installed at the rear end of the garbage truck body, characterized in that: It comprises a barrel hanging mechanism (1), a pressure plate mechanism (2) installed on the barrel hanging mechanism (1), and a barrel hanging lifting and dumping mechanism (3) installed on one side of the barrel hanging mechanism (1); in, A barrel hanging mechanism (1) comprises a barrel hanging plate (11), wherein the barrel hanging plate (11) is provided with hanging teeth (12), and the trash can is hung on the hanging teeth (12); A pressing plate mechanism (2), comprising a pressing plate (21) hinged to the upper end of the barrel hanging plate (11), and a tilting cylinder (22) for driving the pressing plate (21) to rotate along a hinge point between the pressing plate and the barrel hanging plate (11); The bucket lifting and dumping mechanism (3) comprises a lifting frame (31) hinged on the bucket hanging plate (11), a support seat (32) connected to the vehicle body hinged on the lifting frame (31), a lifting cylinder (33) hinged between the bucket hanging plate (11) and the support seat (32), and a dumping cylinder (34) hinged between the lifting frame (31) and the support seat (32); It also includes a clamping mechanism (5) which is mounted on the lifting frame (31), comprising a clamping arm (51) rotatably mounted on the lifting frame (31), a first driving component (52) driving the two clamping arms (51) to move laterally to adjust the clamping force, and a second driving component (53) driving the two clamping arms (51) to rotate to adjust the clamping angle.

2. The automatic loading and unloading structure of a garbage truck according to claim 1, characterized in that: It also includes a hydraulic and electrical control system installed on the vehicle body, and the tilting cylinder (22), the lifting cylinder (33) and the dumping cylinder (34) are all connected to the hydraulic and electrical control system through pipelines.

3. The automatic loading and unloading structure of a garbage truck according to claim 1, characterized in that: A control device (4) is installed on the lifting frame (31), and a pressure sensor is installed on the pressing plate (21); the pressure sensor, the first driving component (52) and the second driving component (53) are all electrically connected to the control device (4).

4. The automatic loading and unloading structure of a garbage truck according to claim 1, characterized in that: The barrel hanging mechanism (1) further comprises a receiving plate (13) arranged at the lower end of the barrel hanging plate (11); the receiving plate (13) protrudes outward from the barrel hanging plate (11) and contacts the barrel wall of the trash can; A rubber pad (14) is installed on the contact surface between the receiving plate (13) and the barrel wall.

5. The automatic loading and unloading structure of a garbage truck according to claim 1, characterized in that: The first driving component (52) comprises a first driving motor (521), a gear (522) being connected to the output end of the first driving motor (521), racks (523) being respectively arranged on both sides of the gear (522) and meshing therewith, and the two racks (523) are respectively connected to the two clamping arms (51).

6. The automatic loading and unloading structure of a garbage truck according to claim 5, characterized in that: The second driving component (53) comprises a driving support (531) mounted on the lifting frame (31), and a rotating support (532) hinged on the driving support (531); a rotating shaft (533) is mounted at the hinge between the driving support (531) and the rotating support (532); one end of the rotating shaft (533) is connected to a second driving motor (534), and the rotating shaft (533) is fixedly connected to the rotating support (532); The first driving component (52) is mounted on the rotating support (532) and rotates along with the rotation of the rotating support (532).

7. The automatic loading and unloading structure of a garbage truck according to claim 1, characterized in that: A limiting portion (35) is installed on the side of the support seat (32) facing the lifting frame (31), and the limiting portion (35) is provided with a slot for clamping the lifting frame (31).

8. An automatic loading and unloading method for a garbage truck, characterized in that: The method specifically comprises the following steps: Step 1: Move the trash can containing trash onto the hanging mechanism (1), and the hanging teeth (12) hook the opening of one side of the trash can, while the pressing plate mechanism (2) rotates downward to press the opening of the side; Step 2: The clamping mechanism (5) drives the clamping arm (51) to clamp the wall of the trash can; Step 3: The piston rod of the lifting cylinder (33) is extended and retracted to lift the trash can from the ground to the trash loading and unloading port of the vehicle body, and the piston rod of the dumping cylinder (34) is extended to push the lifting frame (31) to rotate upward, and the trash in the trash can is dumped from the loading and unloading port into the trash compartment; Step 4: Control the dumping cylinder (34) and the lifting cylinder (33) to move in the opposite direction, and at the same time drive the trash can to slide downward along the lifting frame (31) until the trash can contacts the ground; Step 5: Control the clamping arm (51) to release the barrel wall and rotate to the starting position, and the pressing plate (21) rotates in the opposite direction to release the barrel mouth, and remove the trash can from the hanging teeth (12).

9. The automatic loading and unloading method of a garbage truck according to claim 8, characterized in that: In step three, when the lifting cylinder (33) and the dumping cylinder (34) drive the trash can to move, the pressure sensor monitors the change in the pressure value of the pressure plate (21), transmits the signal to the control device (4), and adjusts the clamping force and clamping angle of the clamping mechanism (5).

10. The automatic loading and unloading method of a garbage truck according to claim 8, characterized in that: In step three, when the trash can is turned over to the maximum tipping angle, the second driving component (53) controls the clamping mechanism (5) to limit the position of the trash can.

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