CN111204540A

CN111204540A - Power device for filling mechanism of compression type garbage truck

Info

Publication number: CN111204540A
Application number: CN202010109742.3A
Authority: CN
Inventors: 邵立坤; 其他发明人请求不公开姓名
Original assignee: Ningbo Zhenge Hydraulic Technology Co ltd
Current assignee: Cheng Li Special Purpose Vehicle Co ltd
Priority date: 2020-02-22
Filing date: 2020-02-22
Publication date: 2020-05-29
Anticipated expiration: 2040-02-22
Also published as: CN111204540B

Abstract

The invention discloses a power device for a filling mechanism of a compression type garbage truck, which comprises a cylinder body, wherein a mounting hole is formed in the cylinder body, and a P port and a T port are formed in the side surface of the cylinder body; the cylinder body is provided with a first cylinder barrel at one end of the mounting hole and a second cylinder barrel at the other end of the mounting hole; the first cylinder barrel is connected with a first piston body in a sliding mode, the second cylinder barrel is connected with a second piston body in a sliding mode, a first piston rod is arranged on the first piston body, and a second piston rod is arranged on the second piston body; a first end cover is fixedly arranged at one end of the first cylinder barrel, and the first piston rod is connected in the first end cover in a sliding manner; a second end cover is fixedly arranged at one end of the second cylinder barrel, and the second piston rod is connected in the second end cover in a sliding manner; the reversing assembly is used for controlling the reciprocating motion of the first piston body and the second piston body; the power device for the filling mechanism of the compression type garbage truck is simple in structure, integrated and small in size.

Description

Power device for filling mechanism of compression type garbage truck

Technical Field

The invention belongs to the technical field of garbage truck equipment, and particularly relates to a power device for a filling mechanism of a compression type garbage truck.

Background

At present, a garbage truck which is common in cities is a rear-loading compression type garbage truck. The working task of the garbage compression device is to compress garbage into the carriage by using a compression mechanism equipped by the garbage compression device, convey the garbage to a garbage disposal site and push the garbage out of the carriage. At present, a compression type garbage truck in the environmental sanitation market mainly comprises the following parts: the automatic loading device comprises an automobile chassis, a carriage, a push plate mechanism, a hopper, a filling mechanism, a hydraulic system, an electric control system and an auxiliary system thereof. The filling mechanism comprises two scraper oil cylinders, two sliding plate oil cylinders, a scraper and a sliding plate. The working steps are divided into four stages of turning up the scraper, descending the sliding plate, digging down the scraper and ascending the sliding plate according to time. In the initial state, the garbage truck may be in a non-working state such as parking or transportation, and at the moment, the scraper cylinder is in an extension state, and the slide plate cylinder is in a contraction state. The prior compressed garbage truck in China controls the filling mechanism; the hydraulic control valve has the advantages that the manual multi-way valve, the electromagnetic reversing valve, the hydraulic control reversing valve and other sequence valves are complex in oil path, and the travel switch and the electric control mechanism required by the hydraulic valve are controlled, so that the whole filling mechanism is large in size, complex in structure, not beneficial to maintenance and high in cost.

Disclosure of Invention

The invention aims to provide a power device for a filling mechanism of a compression type garbage truck, which not only has simple structure, but also integrates an oil way control valve in a cylinder body and a cylinder barrel, so that the whole hydraulic part is more integrated and the volume is reduced.

In order to achieve the purpose, the invention provides the following technical scheme: a power device for a filling mechanism of a compression type garbage truck comprises a cylinder body, wherein a through mounting hole is formed in the cylinder body, and a P port and a T port which are communicated with the mounting hole are formed in the side surface of the cylinder body; a first cylinder barrel is fixedly arranged at one end of the cylinder body in the mounting hole along the axial direction of the mounting hole, and a second cylinder barrel coaxial with the first cylinder barrel is fixedly arranged at the other end of the mounting hole; the first cylinder barrel is connected with a first piston body in a sliding mode, the second cylinder barrel is connected with a second piston body in a sliding mode, a first piston rod is arranged on the first piston body, and a second piston rod is arranged on the second piston body; a first end cover is fixedly arranged at one end of the first cylinder barrel, which is far away from the cylinder body, and the first piston rod is connected in the first end cover in a sliding manner; a second end cover is fixedly arranged at one end of the second cylinder barrel, which is far away from the cylinder body, and the second piston rod is connected in the second end cover in a sliding manner; a first piston body, a first end cover, a first piston body and a second end cover are arranged on the piston body, and a first piston body and a second piston body are arranged on the piston body; a second piston body and a second end cover are arranged in the first cylinder, a second piston body and a second end cover are arranged in the second cylinder, and a second rodless cavity is formed between the second piston body and the port plate; the reversing assembly is used for controlling the reciprocating motion of the first piston body and the second piston body.

In a further technical scheme, the reversing assembly comprises a valve plate, and the valve plate is rotatably connected in the mounting hole and is positioned between the first cylinder barrel and the second cylinder barrel; a first avoidance hole is formed in the center of the first piston body, a first plug cover is fixedly arranged at the opening end of the first avoidance hole, a first sliding hole with a non-circular cross section is formed in the first plug cover, and a first steering rod which is connected in the first sliding hole in a sliding mode and extends into the first avoidance hole is arranged on the valve plate; a second avoidance hole is formed in the center of the second piston body, a second plug cover is fixedly arranged at the opening end of the second avoidance hole, a second sliding hole with a non-circular cross section is formed in the second plug cover, and a second steering rod which is connected in the second sliding hole in a sliding mode and extends into the second avoidance hole is arranged on the valve plate;

when the valve plate is at the first position, the port P is communicated with the second rod cavity, and the port T is communicated with the second rodless cavity; when the valve plate is at the second position, the port P is communicated with the first rodless cavity, and the port T is communicated with the first rod cavity; when the valve plate is at the third position, the port P is communicated with the second rodless cavity, and the port T is communicated with the second rod-containing cavity; when the valve plate is at the fourth position, the port P is communicated with the first rod cavity, and the port T is communicated with the first rodless cavity; a first steering assembly and a second steering assembly are arranged in the second cylinder, and a third steering assembly and a fourth steering assembly are arranged in the first cylinder; when the second piston body moves to the position of the valve plate, the first steering assembly drives the second piston body to rotate, and the second piston body drives the valve plate to rotate to a second position through a second steering rod; when the first piston body moves to the first end cover, the third steering assembly drives the first piston body to rotate, and the first piston body drives the valve plate to rotate to a third position through the first steering rod; when the second piston body moves to the second end cover, the second steering assembly drives the second piston body to rotate, and the second piston body drives the port plate to rotate to a fourth position through the second steering rod; when the first piston body moves to the valve plate, the fourth steering assembly drives the first piston body to rotate, and the first piston body drives the valve plate to rotate to the first position through the first steering rod.

In a further technical scheme, a groove hole is formed in the outer circumferential side face of the valve plate along the radial direction of the valve plate, a marble is arranged in the groove hole, a spring is arranged between the marble and the bottom of the groove hole in the groove hole and used for forcing the marble to be tightly pressed on the inner side wall of the mounting hole, and a first positioning hole, a second positioning hole, a third positioning hole and a fourth positioning hole which are matched with the marble are formed in the inner side wall of the mounting hole; when the valve plate is positioned at the first position, the marble is pressed in the first positioning hole under the action of the spring; when the valve plate is located at the second position, the marble is pressed in the second positioning hole under the action of the spring; when the valve plate is positioned at the third position, the marble is pressed in the third positioning hole under the action of the spring; when the valve plate is located at the fourth position, the marble is pressed in the fourth positioning hole under the action of the spring.

In a further technical scheme, the first steering assembly comprises two first electromagnetic assemblies symmetrically arranged in the side wall of the second cylinder barrel, two first magnets are symmetrically arranged on the side surface of the outer circumference of the second piston body close to the port plate, and when the two first electromagnetic assemblies are electrified, the two first magnets are respectively attracted with the two first electromagnetic assemblies correspondingly; the second steering assembly comprises two second electromagnetic assemblies symmetrically arranged in the side wall of the second cylinder barrel, two second magnets are symmetrically arranged on the side surface, close to the outer circumference of the second end cover, of the second piston body, and when the two second electromagnetic assemblies are electrified, the two second magnets are respectively attracted with the two second electromagnetic assemblies correspondingly; the third steering assembly comprises two third electromagnetic assemblies symmetrically arranged in the side wall of the first cylinder barrel, two third magnets are symmetrically arranged on the side surface, close to the outer circumference of the first end cover, of the first piston body, and when the two third electromagnetic assemblies are electrified, the two third magnets are respectively attracted with the two third electromagnetic assemblies correspondingly; the fourth steering assembly comprises two fourth electromagnetic assemblies symmetrically arranged in the side wall of the first cylinder barrel, two fourth magnets are symmetrically arranged on the side face, close to the outer circumference of the thrust plate, of the first piston body, and when the two fourth electromagnetic assemblies are electrified, the two fourth magnets are respectively attracted with the two fourth electromagnetic assemblies correspondingly.

In a further technical scheme, a middle annular groove communicated with the port P, a first annular groove and a second annular groove which are respectively positioned on two sides of the middle annular groove and communicated with the port T are formed in the side wall of the outer circumference of the valve plate; a first oil hole communicated with the first rod cavity and a second oil hole communicated with the first rodless cavity are formed in the first cylinder; a third oil hole communicated with the second rod cavity and a fourth oil hole communicated with the second rodless cavity are formed in the second cylinder; the side surface of the valve plate facing the first end cover is provided with a first communicating hole and a second communicating hole which are communicated with the middle ring groove, and a first cutting groove and a second cutting groove which are communicated with the first ring groove; the side surface of the valve plate facing the second end cover is provided with a third communicating hole and a fourth communicating hole which are communicated with the middle ring groove, and a third cutting groove and a fourth cutting groove which are communicated with the first ring groove; when the valve plate is located at the first position, the third communicating hole is communicated with the third oil hole, and the fourth oil hole is communicated with the third cutting groove; when the valve plate is located at the second position, the first connecting hole is communicated with the second oil hole, and the first oil hole is communicated with the first cut groove; when the valve plate is located at the third position, the third communicating hole is communicated with the fourth oil hole, and the third oil hole is communicated with the third cutting groove; when the valve plate is located at the fourth position, the fourth communication hole is communicated with the first oil hole, and the second oil hole is communicated with the first cut groove.

In a further technical scheme, be equipped with the oil through that is used for communicateing first annular and second annular in the cylinder body, the oil through communicates with the T mouth.

Advantageous effects

Compared with the prior art, the technical scheme of the invention has the following advantages:

(1) the first cylinder barrel and the second cylinder barrel are coaxially arranged on the two sides of the cylinder body to form a power device, so that the number of used cylinders is reduced from four to two, an oil way is convenient to install, and the space is saved;

(2) the scraper and the second connecting piece are connected through the power groove and the convex column, so that the second piston rod does not form a certain angle with the sliding plate when in work, and the space is saved;

(3) the oil way control valve is integrated in the cylinder body and the cylinder barrel, so that the whole hydraulic part is more integrated, the volume is reduced, the use is more convenient, the installation is simpler, and the disassembly and the maintenance are convenient;

(4) the electromagnetic assembly is electrified to generate a magnetic field to generate force on the magnet to drive the valve plate to rotate, the direction of an oil path is controlled, the oil cylinder is controlled to stretch, and the oil path is controlled to be simple, so that a manual multi-way valve, an electromagnetic reversing valve, a hydraulic control reversing valve and other sequence valves are omitted, the cost is saved, the whole body is more integrated, and the space is saved.

Drawings

FIG. 1 is a block diagram of the initial position of the compression garbage truck flights and slides;

FIG. 2 is a cross-sectional view of the present invention in an initial position;

FIG. 3 is a cross-sectional view taken in the direction A-A of FIG. 2 in accordance with the present invention;

FIG. 4 is a view showing the structure of the upturning position of the scraper of the compression garbage truck;

FIG. 5 is a cross-sectional view of the present invention with the squeegee in an upturned position;

FIG. 6 is a cross-sectional view taken in the direction B-B of the FIG. 5 position of the present invention;

FIG. 7 is a view showing the configuration of the sliding position of the compression type garbage chute;

FIG. 8 is a cross-sectional view of the present invention with the slide down position;

FIG. 9 is a cross-sectional view taken in the direction of C-C of the position of FIG. 8 in accordance with the present invention;

FIG. 10 is a view showing the configuration of the downward digging position of the compression type garbage scraper;

FIG. 11 is a cross-sectional view of the present invention in a screed down-cutting position;

FIG. 12 is a cross-sectional view taken in the direction D-D of FIG. 11 in accordance with the teachings of the present invention;

fig. 13 is a structural view of the port plate.

Detailed Description

Referring to fig. 1-13, a power device for a filling mechanism of a compression garbage truck comprises a cylinder body 1, wherein a mounting hole 101 is formed in the cylinder body 1 along the moving direction of a sliding plate 10, and a P port and a T port which are communicated with the mounting hole 101 are formed in the side surface of the cylinder body 1; a first cylinder barrel 5 is fixedly arranged at one end of the cylinder body 1 in the mounting hole 101 along the axial direction of the mounting hole 101, and a second cylinder barrel 6 which is coaxial with the first cylinder barrel 5 is fixedly arranged at the other end of the mounting hole 101; the first cylinder 5 is connected with a first piston body 4 in a sliding manner, the second cylinder 6 is connected with a second piston body 3 in a sliding manner, the first piston body 4 is provided with a first piston rod 41, and the second piston body 3 is provided with a second piston rod 31; a first end cover 43 is fixedly arranged at one end of the first cylinder barrel 5 far away from the cylinder body 1, and the first piston rod 41 is connected in the first end cover 43 in a sliding manner; a second end cover 33 is fixedly arranged at one end of the second cylinder barrel 6 far away from the cylinder body 1, and the second piston rod 31 is connected in the second end cover 33 in a sliding manner; a first rod chamber 5a is formed between the first end cover 43 and the first piston body 4 and a first non-rod chamber 5b is formed between the first piston body 4 and the port plate 2 in the first cylinder tube 5; a second rod chamber 6a is formed in the second cylinder 6 between the second piston body 3 and the second end cap 33, and a second rodless chamber 6b is formed between the second piston body 3 and the port plate 2; and a reversing assembly for controlling the first piston body 4 and the second piston body 3 to reciprocate.

The reversing assembly comprises a valve plate 2, and the valve plate 2 is rotatably connected in the mounting hole 101 and is positioned between the first cylinder 5 and the second cylinder 6; a first avoidance hole 44 is formed in the center of the first piston body 4, a first plug cover 4a is fixedly arranged at the opening end of the first avoidance hole 44, a first sliding hole with a regular hexagonal cross section is formed in the first plug cover 4a, and a first steering rod 2m which is connected in the first sliding hole in a sliding mode and extends into the first avoidance hole 44 is arranged on the valve plate 2; the second piston body 3 is internally provided with a second avoiding hole 34 at the center thereof, the opening end of the second avoiding hole 34 is fixedly provided with a second plug cover 3a, a second sliding hole with a regular hexagonal cross section is arranged in the second plug cover 3a, and the valve plate 2 is provided with a second steering rod 2n which is connected in the second sliding hole in a sliding manner and extends into the second avoiding hole 34.

The outer circumferential side wall of the valve plate 2 is provided with a middle ring groove 2i communicated with the port P, a first ring groove 2k and a second ring groove 2j which are respectively positioned at two sides of the middle ring groove 2 i; an oil through hole 1b used for communicating the first annular groove 2k with the second annular groove 2j is formed in the cylinder body 1, and the oil through hole 1b is communicated with the T-shaped opening. A first oil hole 5c communicated with the first rod cavity 5a and a second oil hole 5d communicated with the first rodless cavity 5b are formed in the first cylinder barrel 5; a third oil hole 6c communicated with the second rod cavity 6a and a fourth oil hole 6d communicated with the second rodless cavity 6b are formed in the second cylinder 6; the side of the valve plate 2 facing the first end cap 43 is provided with a first communicating hole 2b and a second communicating hole 2c which are communicated with the middle ring groove 2i, and a first cutting groove 2e and a second cutting groove 2h which are communicated with the first ring groove 2 k; the port plate 2 is provided with a third communication hole 2a and a fourth communication hole 2d communicating with the intermediate ring groove 2i, and a third cutout groove 2f and a fourth cutout groove 2g communicating with the first ring groove 2k, on the side facing the second end cover 33.

A first steering assembly and a second steering assembly are arranged in the second cylinder 6, and a third steering assembly and a fourth steering assembly are arranged in the first cylinder 5; when the second piston body 3 moves to the port plate 2, the first steering assembly drives the second piston body 3 to rotate, and the second piston body 3 drives the port plate 2 to rotate to a second position through a second steering rod 2 n; when the first piston body 4 moves to the first end cover 43, the third steering assembly drives the first piston body 4 to rotate, and the first piston body 4 drives the port plate 2 to rotate to a third position through the first steering rod 2 m; when the second piston body 3 moves to the second end cap 33, the second steering assembly drives the second piston body 3 to rotate, and the second piston body 3 drives the port plate 2 to rotate to the fourth position through the second steering rod 2 n; when the first piston body 4 moves to the port plate 2, the fourth steering component drives the first piston body 4 to rotate, and the first piston body 4 drives the port plate 2 to rotate to the first position through the first steering rod 2 m.

A slotted hole 201 is formed in the outer circumferential side face of the valve plate 2 along the radial direction, a marble 71 is arranged in the slotted hole 201, a spring 72 is arranged between the marble 71 and the bottom of the slotted hole 201 in the slotted hole 201, the spring 72 is used for forcing the marble 71 to be pressed on the inner side wall of the mounting hole 101, and a first positioning hole 102, a second positioning hole 103, a third positioning hole 104 and a fourth positioning hole 105 which are matched with the marble 71 are formed in the inner side wall of the mounting hole 101; when the port plate 2 is located at the first position, the ball 71 is pressed in the first positioning hole 102 under the action of the spring 72; when the port plate 2 is located at the second position, the marble 71 is pressed in the second positioning hole 103 under the action of the spring 72; when the port plate 2 is located at the third position, the marble 71 is pressed in the third positioning hole 104 under the action of the spring 72; when the port plate 2 is located at the fourth position, the ball 71 is pressed in the fourth positioning hole 105 by the spring 72.

The first steering assembly comprises two first electromagnetic assemblies 8b which are symmetrically arranged in the side wall of the second cylinder 6, two first magnets 9b are symmetrically arranged on the outer circumferential side surface of the second piston body 3 close to the port plate 2, and when the two first electromagnetic assemblies 8b are electrified, the two first magnets 9b are respectively attracted with the two first electromagnetic assemblies 8b correspondingly; the second steering assembly comprises two second electromagnetic assemblies 8a which are symmetrically arranged in the side wall of the second cylinder 6, two second magnets 8b are symmetrically arranged on the outer circumferential side surface of the second piston body 3 close to the second end cover 33, and when the two second electromagnetic assemblies 8a are electrified, the two second magnets 8b are respectively attracted with the two second electromagnetic assemblies 8a correspondingly; the third steering assembly comprises two third electromagnetic assemblies 8d which are symmetrically arranged in the side wall of the first cylinder 5, two third magnets 9d are symmetrically arranged on the outer circumferential side surface of the first piston body 4 close to the first end cover 43, and when the two third electromagnetic assemblies 8d are electrified, the two third magnets 9d are respectively attracted with the two third electromagnetic assemblies 8d correspondingly; the fourth steering assembly comprises two fourth electromagnetic assemblies 8c symmetrically arranged in the side wall of the first cylinder barrel 5, two fourth magnets 9c are symmetrically arranged on the outer circumferential side surface of the first piston body 4 close to the port plate 2, and when the two fourth electromagnetic assemblies 8c are electrified, the two fourth magnets 9c are respectively attracted with the two fourth electromagnetic assemblies 8c correspondingly.

Wherein, first electromagnetic assembly 8b, second electromagnetic assembly 8a, third electromagnetic assembly 8d, fourth electromagnetic assembly 8 c's structure is the same, all including installing the sleeve in the cylinder to and set up the iron core in the sleeve and the coil of winding in the iron core outside. The two first magnets 9b, the two second magnets 8b, the two third magnets 9d and the two fourth magnets 9c are respectively provided with an N pole and an S pole at one end facing the cylinder.

The filling mechanism of the compression garbage truck shown in fig. 1 comprises a mounting plate 121, a sliding plate 10 is connected on the mounting plate 121 in a sliding manner, one end of the sliding plate 10 is hinged with a scraping plate 11, and the cylinder body 1 is fixedly mounted on the sliding plate 10; the first connecting piece 12 is arranged at one end, far away from the cylinder body 1, of the first piston rod 41, the first connecting piece 12 is hinged to the mounting plate 121, the second connecting piece 3b is arranged at one end, far away from the cylinder body 1, of the second piston rod 31, and the second connecting piece 3b is used for driving the scraper 11 to turn over. The reversing assembly in the power device is used for controlling the first piston body 4 and the second piston body 3 to reciprocate, and further controlling the filling mechanism to sequentially turn up the scraper 11, lower the sliding plate 10, dig down the scraper 11 and lift the sliding plate 10.

A first hook groove 42 is formed in one end, far away from the cylinder body 1, of the first piston rod 41, and a first hook body 122 rotatably connected in the first hook groove 42 is arranged on the first connecting piece 12; the second piston rod 31 is provided with a second hook groove 32 at one end far away from the cylinder body 1, and the second connecting piece 3b is provided with a second hook body 3b1 rotatably connected in the second hook groove 32. The scraper 11 is provided with lugs 111 extending from two sides of the second connecting member 3b, each lug 111 is provided with a power groove 112 along the length direction of the lug 111, and two sides of the second connecting member 3b are provided with convex columns 3b2 extending into the power grooves 112.

FIG. 2 is a sectional view of the power unit of the present invention; wherein the port plate is in a fourth position; before working, the oil inlet pipe is connected with the port P, the port T is connected with the oil outlet pipe, and after the oil way connection is finished and the oil cylinder is installed, oil can be introduced into the port P to start working.

Firstly, the two fourth electromagnetic assemblies 8c are electrified, the two fourth electromagnetic assemblies 8c generate opposite magnetic fields, the two fourth magnets 9c in the two fourth electromagnetic assemblies are driven by magnetic field force to drive the first piston body 4 to rotate by 90 degrees, the first plug cover 4a on the first piston body 4 drives the first steering rod 2m to rotate, the port plate 2 is driven to rotate by 90 degrees to a first position, as shown in fig. 5-6, the oil path is reversed, after hydraulic oil enters the port P, the hydraulic oil enters the second rod chamber 6a through the middle annular groove 2i, the third communicating hole 2a and the third oil hole 6c, oil in the second rod-free chamber 6b passes through the fourth oil hole 6d, the third cutting groove 2f, the second annular groove 2j and the oil through hole 1b to discharge the port T, and the second piston body 3 moves leftwards to drive the scraper 11 to turn upwards. When the second piston body 3 moves to the leftmost port plate 2, as shown in fig. 5, the travel switch is triggered, the two fourth electromagnetic assemblies 8c lose power, the two first electromagnetic assemblies 8b get power, the two first electromagnetic assemblies 8b generate opposite magnetic fields, the two first magnets 9b in the two fourth electromagnetic assemblies are driven by magnetic field force to rotate the second piston body 3 by 90 degrees, the second plug cover 3a on the second piston body 3 drives the second steering rod 2n to rotate, the port plate 2 is driven to rotate by 90 degrees to a second position, as shown in fig. 8-9, the oil path is reversed, after hydraulic oil enters the port P, the hydraulic oil enters the first rodless cavity 5b through the middle annular groove 2i, the first connecting hole 2b and the second oil hole 5d, the oil in the first rod cavity 5a is discharged from the port T through the first oil hole 5c, the first cutting groove 2e, the first annular groove 2k and the oil through hole 1b, and the first piston body 4 moves to the left, driving the slide board 10 to slide down. When the first piston body 4 moves to the leftmost end, as shown in fig. 8, the travel switch is triggered, the two first electromagnetic assemblies 8b lose power, the two third electromagnetic assemblies 8d get power, the two third electromagnetic assemblies 8d generate opposite magnetic fields, the two third magnets 9d in the first piston body 4 are driven by magnetic field force to rotate 90 degrees continuously, the first plug cover 4a on the first piston body 4 drives the first steering rod 2m to rotate, the port plate 2 is driven to rotate 90 degrees continuously to the third position, as shown in fig. 11-12, the oil path is reversed, after hydraulic oil enters the port P, the hydraulic oil enters the second rodless chamber 6b through the middle ring groove 2i, the third communicating hole 2a and the fourth oil hole 6d, the oil in the second rod chamber 6a is discharged from the port T through the third oil hole 6c, the third cutting groove 2f, the second ring groove 2j and the oil through hole 1b, the second piston body 3 moves to the right, the scraper 11 is driven to dig downwards. When the second piston body 3 moves to the rightmost end, as shown in fig. 11, the travel switch is triggered, the two third electromagnetic assemblies 8d lose power, the two second electromagnetic assemblies 8a get power, the two second electromagnetic assemblies 8a generate opposite magnetic fields, the two second magnets 9a in the two third electromagnetic assemblies are driven by magnetic field force to rotate the second piston body 3 continuously by 90 degrees, the second plug cover 3a on the second piston body 3 drives the second steering rod 2n to rotate, the port plate 2 is driven to rotate continuously by 90 degrees to the fourth position, as shown in fig. 2 and 3, the oil path is reversed, after hydraulic oil enters the port P, the hydraulic oil enters the first rod-containing cavity 5a through the middle ring groove 2i, the fourth communicating hole 2d and the first oil hole 5c, the oil in the first rod-free cavity 5b is discharged from the port T through the second oil hole 5d, the first cutting groove 2e, the first ring groove 2k and the oil hole 1b, the first piston body 4 moves to the right, the sliding plate 10 is driven to ascend, when the first piston body 4 moves to the rightmost end, as shown in fig. 1, the travel switch is triggered, all the electromagnetic assemblies lose power, the port P stops feeding oil, and the filling mechanism of the compression type garbage truck stops moving to complete work.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A power device for a filling mechanism of a compression type garbage truck is characterized by comprising a cylinder body, wherein a through mounting hole is formed in the cylinder body, and a P port and a T port which are communicated with the mounting hole are formed in the side surface of the cylinder body; a first cylinder barrel is fixedly arranged at one end of the cylinder body in the mounting hole along the axial direction of the mounting hole, and a second cylinder barrel coaxial with the first cylinder barrel is fixedly arranged at the other end of the mounting hole; the first cylinder barrel is connected with a first piston body in a sliding mode, the second cylinder barrel is connected with a second piston body in a sliding mode, a first piston rod is arranged on the first piston body, and a second piston rod is arranged on the second piston body; a first end cover is fixedly arranged at one end of the first cylinder barrel, which is far away from the cylinder body, and the first piston rod is connected in the first end cover in a sliding manner; a second end cover is fixedly arranged at one end of the second cylinder barrel, which is far away from the cylinder body, and the second piston rod is connected in the second end cover in a sliding manner; a first piston body, a first end cover, a first piston body and a second end cover are arranged on the piston body, and a first piston body and a second piston body are arranged on the piston body; a second piston body and a second end cover are arranged in the first cylinder, a second piston body and a second end cover are arranged in the second cylinder, and a second rodless cavity is formed between the second piston body and the port plate; the reversing assembly is used for controlling the reciprocating motion of the first piston body and the second piston body.

2. The power unit for the filling mechanism of the compression garbage truck as claimed in claim 1, wherein the reversing assembly comprises a port plate, the port plate is rotatably connected in the mounting hole and is positioned between the first cylinder and the second cylinder; a first avoidance hole is formed in the center of the first piston body, a first plug cover is fixedly arranged at the opening end of the first avoidance hole, a first sliding hole with a non-circular cross section is formed in the first plug cover, and a first steering rod which is connected in the first sliding hole in a sliding mode and extends into the first avoidance hole is arranged on the valve plate; a second avoidance hole is formed in the center of the second piston body, a second plug cover is fixedly arranged at the opening end of the second avoidance hole, a second sliding hole with a non-circular cross section is formed in the second plug cover, and a second steering rod which is connected in the second sliding hole in a sliding mode and extends into the second avoidance hole is arranged on the valve plate;

3. The power unit for the filling mechanism of the compression-type garbage truck according to claim 2, wherein a groove hole is formed in the outer circumferential side surface of the port plate in the radial direction thereof, a ball is disposed in the groove hole, a spring is disposed in the groove hole between the ball and the bottom of the groove hole and used for forcing the ball to press against the inner side wall of the mounting hole, and a first positioning hole, a second positioning hole, a third positioning hole and a fourth positioning hole which are matched with the ball are formed in the inner side wall of the mounting hole; when the valve plate is positioned at the first position, the marble is pressed in the first positioning hole under the action of the spring; when the valve plate is located at the second position, the marble is pressed in the second positioning hole under the action of the spring; when the valve plate is positioned at the third position, the marble is pressed in the third positioning hole under the action of the spring; when the valve plate is located at the fourth position, the marble is pressed in the fourth positioning hole under the action of the spring.

4. The power unit for the filling mechanism of the compression garbage truck as claimed in claim 2, wherein the first steering assembly comprises two first electromagnetic assemblies symmetrically arranged in the side wall of the second cylinder barrel, the second piston body is symmetrically provided with two first magnets on the outer circumferential side surface close to the port plate, and when the two first electromagnetic assemblies are electrified, the two first magnets are respectively attracted with the two first electromagnetic assemblies correspondingly; the second steering assembly comprises two second electromagnetic assemblies symmetrically arranged in the side wall of the second cylinder barrel, two second magnets are symmetrically arranged on the side surface, close to the outer circumference of the second end cover, of the second piston body, and when the two second electromagnetic assemblies are electrified, the two second magnets are respectively attracted with the two second electromagnetic assemblies correspondingly; the third steering assembly comprises two third electromagnetic assemblies symmetrically arranged in the side wall of the first cylinder barrel, two third magnets are symmetrically arranged on the side surface, close to the outer circumference of the first end cover, of the first piston body, and when the two third electromagnetic assemblies are electrified, the two third magnets are respectively attracted with the two third electromagnetic assemblies correspondingly; the fourth steering assembly comprises two fourth electromagnetic assemblies symmetrically arranged in the side wall of the first cylinder barrel, two fourth magnets are symmetrically arranged on the side face, close to the outer circumference of the thrust plate, of the first piston body, and when the two fourth electromagnetic assemblies are electrified, the two fourth magnets are respectively attracted with the two fourth electromagnetic assemblies correspondingly.

5. The power unit for the filling mechanism of the compression type garbage truck according to claim 2, wherein the outer circumferential side wall of the port plate is provided with a middle ring groove communicated with the port P, and a first ring groove and a second ring groove which are respectively positioned at two sides of the middle ring groove and communicated with the port T; a first oil hole communicated with the first rod cavity and a second oil hole communicated with the first rodless cavity are formed in the first cylinder; a third oil hole communicated with the second rod cavity and a fourth oil hole communicated with the second rodless cavity are formed in the second cylinder; the side surface of the valve plate facing the first end cover is provided with a first communicating hole and a second communicating hole which are communicated with the middle ring groove, and a first cutting groove and a second cutting groove which are communicated with the first ring groove; the side surface of the valve plate facing the second end cover is provided with a third communicating hole and a fourth communicating hole which are communicated with the middle ring groove, and a third cutting groove and a fourth cutting groove which are communicated with the first ring groove; when the valve plate is located at the first position, the third communicating hole is communicated with the third oil hole, and the fourth oil hole is communicated with the third cutting groove; when the valve plate is located at the second position, the first connecting hole is communicated with the second oil hole, and the first oil hole is communicated with the first cut groove; when the valve plate is located at the third position, the third communicating hole is communicated with the fourth oil hole, and the third oil hole is communicated with the third cutting groove; when the valve plate is located at the fourth position, the fourth communication hole is communicated with the first oil hole, and the second oil hole is communicated with the first cut groove.

6. The power unit for the filling mechanism of the compression type garbage truck according to claim 5, wherein an oil through hole for communicating the first ring groove and the second ring groove is provided in the cylinder body, and the oil through hole communicates with the T-port.