A garbage compactor and its scraping slide plate system, scraping slide plate linkage system

Abstract

The present invention discloses a garbage compactor and its scraping plate system and scraping plate linkage system. The linkage system includes a scraping plate oil cylinder, a sliding plate oil cylinder, a first three-position four-way hydraulic control valve, a second three-position four-way hydraulic control valve, a differential pressure control device for the scraping plate oil cylinder and a differential pressure control device for the sliding plate oil cylinder. Two working ports of the first three-position four-way hydraulic control valve are respectively communicated with two working ports of the scraping plate oil cylinder, and two working ports of the second three-position four-way hydraulic control valve are respectively communicated with two working ports of the sliding plate oil cylinder. The differential pressure control device for the scraping plate oil cylinder controls the second three-position four-way hydraulic control valve according to the differential pressure in the scraping plate oil cylinder, and the differential pressure control device for the sliding plate oil cylinder controls the first three-position four-way hydraulic control valve according to the differential pressure in the sliding plate oil cylinder. This system uses the differential pressure of the scraping plate oil cylinder to control the second three-position four-way hydraulic control valve and uses the differential pressure of the sliding plate oil cylinder to control the first three-position four-way hydraulic control valve, thereby realizing the linkage of the scraping plate and the sliding plate, and can completely avoid the phenomenon that the existing system fails due to being covered by garbage and dirt, improving the stability of the system.

Description

Technical Field

[0001] The present invention relates to the technical field of garbage disposal equipment, and particularly relates to a garbage compactor and its scraping plate system and scraping plate linkage system. Background Art

[0002] The linkage of the scraping plate of the existing garbage compactor is realized by a position sensor (proximity switch) sending a control signal after sensing an induction block. As Figure 1 shown, the slide plate 01 is hinged to the scraping plate 02. The piston rod of the scraping plate oil cylinder 03 is hinged to the slide plate 01, and the cylinder barrel of the scraping plate oil cylinder 03 is hinged to the scraping plate 02. The scraping plate 02 can rotate around the slide plate 01 under the drive of the scraping plate oil cylinder 03. A sensor 05 is installed on the slide plate 01, and sensor induction plates 06 are installed at both ends of the cylinder barrel of the scraping plate oil cylinder 03. Only when the sensor 05 senses the induction plate 06 can the slide plate oil cylinder 04 extend, and only when the sensor 05 senses the induction plate 06 can the slide plate oil cylinder 04 retract. It can be seen that the sensor and its induction plate in the scraping plate linkage system are installed on the scraping mechanism, and the main function of the scraping mechanism is to load and compress garbage in the hopper of the garbage compactor. The working environment is very dirty and messy, and the sensor is easily covered by garbage and fails, resulting in abnormal operation of the scraping plate mechanism and seriously affecting the operation efficiency of garbage collection and transportation. Summary of the Invention

[0003] In view of this, the first object of the present invention is to provide a scraping plate linkage system for a garbage compactor to avoid the sensor for detecting the working state of the scraping plate oil cylinder from being covered by garbage and failing, improve its reliability in a dirty and messy environment, and ensure the normal progress of garbage collection and transportation operations.

[0004] The second object of the present invention is to provide a scraping plate system for a garbage compactor and a garbage compactor based on the above-mentioned scraping plate linkage system for a garbage compactor.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A linkage system for a garbage compactor's scraping slide plate, comprising a scraping oil cylinder, a slide plate oil cylinder, a first three-position four-way hydraulic control valve, a second three-position four-way hydraulic control valve, a differential pressure control device for the scraping oil cylinder, and a differential pressure control device for the slide plate oil cylinder. Two working ports of the first three-position four-way hydraulic control valve are respectively connected to two working ports of the scraping oil cylinder. Two working ports of the second three-position four-way hydraulic control valve are respectively connected to two working ports of the slide plate oil cylinder. The oil intake control port of the differential pressure control device for the scraping oil cylinder is connected to the scraping oil cylinder. The oil outlet control port of the differential pressure control device for the scraping oil cylinder is respectively connected to two control ports of the second three-position four-way hydraulic control valve. The oil intake control port of the differential pressure control device for the slide plate oil cylinder is connected to the slide plate oil cylinder. The oil outlet control port of the differential pressure control device for the slide plate oil cylinder is respectively connected to two control ports of the first three-position four-way hydraulic control valve. The differential pressure control device for the scraping oil cylinder is used to output control oil when the scraping oil cylinder is in a fully extended state and a fully retracted state to control the second three-position four-way hydraulic control valve to switch to the left position or the right position. The differential pressure control device for the slide plate oil cylinder is used to output control oil when the slide plate oil cylinder is in a fully extended state and a fully retracted state to control the first three-position four-way hydraulic control valve to switch to the left position or the right position.

[0007] Preferably, the differential pressure control device for the scraping oil cylinder and the differential pressure control device for the slide plate oil cylinder respectively include two differential pressure signal modules. The differential pressure signal module includes a cartridge valve and a check valve. The cartridge valve and the check valve are connected in series between two working ports of the differential pressure signal module serving as the oil intake control port of the differential pressure control device. The check valve is located on the side of the working chamber of the cartridge valve away from the control chamber of the cartridge valve. The check valve is used for unidirectional conduction from the scraping oil cylinder towards the cartridge valve.

[0008] The oil outlet ports of the working chambers of the cartridge valves of the two differential pressure signal modules of the differential pressure control device for the scraping oil cylinder serve as the oil outlet control ports of the differential pressure control device for the scraping oil cylinder and are respectively connected to two control ports of the second three-position four-way hydraulic control valve. Two working ports of one of the two differential pressure signal modules of the differential pressure control device for the scraping oil cylinder are respectively connected to the rod chamber and the rodless chamber of the scraping oil cylinder when the scraping oil cylinder is in a fully extended state. Two working ports of the other of the two differential pressure signal modules of the differential pressure control device for the scraping oil cylinder are respectively connected to the rod chamber and the rodless chamber of the scraping oil cylinder when the scraping oil cylinder is in a fully retracted state.

[0009] The oil outlets of the working chambers of the cartridge valves of the two differential pressure signal modules of the skateboard oil cylinder differential pressure control device are used as the oil outlet control ports of the skateboard oil cylinder differential pressure control device and are respectively connected to the two control ports of the first three-position four-way hydraulic control valve. When the skateboard oil cylinder is in the fully extended state, the two working ports of one of the two differential pressure signal modules of the skateboard oil cylinder differential pressure control device are respectively communicated with the rod chamber and the rodless chamber of the skateboard oil cylinder. When the skateboard oil cylinder is in the fully retracted state, the two working ports of the other of the two differential pressure signal modules of the skateboard oil cylinder differential pressure control device are respectively communicated with the rod chamber and the rodless chamber of the skateboard oil cylinder.

[0010] Preferably, the differential pressure signal module further includes a throttling element, and the throttling element is connected in parallel at both ends of the cartridge valve.

[0011] Preferably, the scraper oil cylinder differential pressure control device and the skateboard oil cylinder differential pressure control device respectively include a two-position four-way hydraulic control valve and two differential pressure signal modules, and the garbage truck scraper skateboard linkage system further includes a two-position four-way solenoid valve;

[0012] The differential pressure signal module includes a cartridge valve and a check valve. The cartridge valve and the check valve are connected in series between the two working ports of the differential pressure signal module serving as the oil intake control port of the differential pressure control device. The check valve is located on the side of the working chamber of the cartridge valve away from the control chamber of the cartridge valve, and the check valve is used for one-way conduction from the scraper oil cylinder to the direction of the cartridge valve;

[0013] The oil outlets of the working chambers of the cartridge valves of the two differential pressure signal modules of the scraper oil cylinder differential pressure control device are respectively connected to the two control ports of the two-position four-way hydraulic control valve of the scraper oil cylinder differential pressure control device. The two working ports of the two-position four-way hydraulic control valve of the scraper oil cylinder differential pressure control device are used as the oil outlet control ports of the scraper oil cylinder differential pressure control device and are respectively connected to the two control ports of the second three-position four-way hydraulic control valve. When the scraper oil cylinder is in the fully extended state, the two working ports of one of the two differential pressure signal modules of the scraper oil cylinder differential pressure control device are respectively communicated with the rod chamber and the rodless chamber of the scraper oil cylinder. When the scraper oil cylinder is in the fully retracted state, the two working ports of the other of the two differential pressure signal modules of the scraper oil cylinder differential pressure control device are respectively communicated with the rod chamber and the rodless chamber of the scraper oil cylinder;

[0014] The oil outlets of the working chambers of the cartridge valves of the two differential pressure signaling modules of the skateboard oil cylinder differential pressure control device are respectively connected to the two control ports of the two-way four-port hydraulic control valve of the skateboard oil cylinder differential pressure control device. The two working ports of the two-way four-port hydraulic control valve of the skateboard oil cylinder differential pressure control device are used as the oil outlet control ports of the skateboard oil cylinder differential pressure control device and are respectively connected to the two control ports of the first three-way four-port hydraulic control valve. Two working ports of one of the two differential pressure signaling modules of the skateboard oil cylinder differential pressure control device are respectively connected to the rod chamber and the rodless chamber of the skateboard oil cylinder when the skateboard oil cylinder is in the fully extended state. Two working ports of the other of the two differential pressure signaling modules of the skateboard oil cylinder differential pressure control device are respectively connected to the rod chamber and the rodless chamber of the skateboard oil cylinder when the skateboard oil cylinder is in the fully retracted state;

[0015] One working port of the two-way four-way solenoid valve is respectively connected to the pressure oil port of the two-way four-port hydraulic control valve of the scraper oil cylinder differential pressure control device and the pressure oil port of the two-way four-port hydraulic control valve of the skateboard oil cylinder differential pressure control device.

[0016] Preferably, the differential pressure signaling module further includes a throttling element, and the throttling element is connected in parallel at both ends of the cartridge valve.

[0017] Preferably, it further includes an instruction acquisition module for acquiring user instructions. The instruction acquisition module is connected to the controller of the garbage truck scraping skateboard linkage system. The controller of the garbage truck scraping skateboard linkage system controls the two-way four-way solenoid valve to be powered on or powered off according to the user instructions acquired by the instruction acquisition module.

[0018] A garbage truck scraping skateboard system includes a scraper, a skateboard, and the garbage truck scraping skateboard linkage system as described in any one of the above. The skateboard is slidably arranged in the carriage of the garbage truck, the scraper is rotatably arranged on the skateboard, and the garbage truck scraping skateboard linkage system is used to drive the scraper and the skateboard to move.

[0019] A garbage truck includes the garbage truck scraping skateboard system as described above.

[0020] To achieve the above object, the present invention provides a linkage system for the scraping slide plate of a garbage compactor. The linkage system for the scraping slide plate of the garbage compactor includes a scraper oil cylinder, a slide plate oil cylinder, a first three-position four-way hydraulic control valve, a second three-position four-way hydraulic control valve, a differential pressure control device for the scraper oil cylinder, and a differential pressure control device for the slide plate oil cylinder. Among them, the two working ports of the first three-position four-way hydraulic control valve are respectively communicated with the two working ports of the scraper oil cylinder, the two working ports of the second three-position four-way hydraulic control valve are respectively communicated with the two working ports of the slide plate oil cylinder, the oil intake control port of the differential pressure control device for the scraper oil cylinder is communicated with the scraper oil cylinder, the oil outlet control port of the differential pressure control device for the scraper oil cylinder is respectively connected to the two control ports of the second three-position four-way hydraulic control valve, the oil intake control port of the differential pressure control device for the slide plate oil cylinder is communicated with the slide plate oil cylinder, the oil outlet control port of the differential pressure control device for the slide plate oil cylinder is respectively connected to the two control ports of the first three-position four-way hydraulic control valve. The differential pressure control device for the scraper oil cylinder is used to output control oil when the scraper oil cylinder is in the fully extended state and the fully retracted state to control the second three-position four-way hydraulic control valve to switch to the left position or the right position. The differential pressure control device for the slide plate oil cylinder is used to output control oil when the slide plate oil cylinder is in the fully extended state and the fully retracted state to control the first three-position four-way hydraulic control valve to switch to the left position or the right position; during the garbage compaction operation, when the scraper oil cylinder is fully retracted, the scraper opens relative to the slide plate, and the pressure in the rod chamber of the scraper oil cylinder rises more than the pressure in the rodless chamber. At this time, the hydraulic oil in the scraper oil cylinder is output to the right control port of the second three-position four-way hydraulic control valve through the differential pressure control device for the scraper oil cylinder, and the second three-position four-way hydraulic control valve switches to the right working position. The rod chamber of the slide plate oil cylinder is communicated with the oil pump through the second three-position four-way hydraulic control valve, and the rodless chamber of the slide plate oil cylinder is communicated with the fuel tank through the second three-position four-way hydraulic control valve. The slide plate oil cylinder retracts to complete the opening of the scraper and the downward movement of the slide plate; when the slide plate oil cylinder is fully retracted, the pressure in the rod chamber of the slide plate oil cylinder rises more than the pressure in the rodless chamber. At this time, the hydraulic oil in the slide plate oil cylinder is output to the left control port of the first three-position four-way hydraulic control valve through the differential pressure control device for the slide plate oil cylinder, and the first three-position four-way hydraulic control valve switches to the left working position. The rod chamber of the scraper oil cylinder is communicated with the fuel tank through the first three-position four-way hydraulic control valve, and the rodless chamber of the scraper oil cylinder is communicated with the oil pump through the first three-position four-way hydraulic control valve. The scraper extends, and the scraper is in a folded state relative to the slide plate. When the scraper oil cylinder extends in place, the pressure in the rodless chamber of the scraper oil cylinder rises more than the pressure in the rod chamber. The hydraulic oil in the scraper oil cylinder is output to the left control port of the second three-position four-way hydraulic control valve through the differential pressure control device for the scraper oil cylinder, and the second three-position four-way hydraulic control valve switches to the left working position. The rodless chamber of the slide plate oil cylinder is communicated with the oil pump through the second three-position four-way hydraulic control valve, and the rod chamber of the slide plate oil cylinder is communicated with the fuel tank through the second three-position four-way hydraulic control valve. The slide plate oil cylinder extends, and the slide plate moves upward to complete the scraping and closing of the scraper and the upward movement of the slide plate, that is, the scraping and compaction of the garbage;It can be seen that the above-mentioned scraping and sliding plate linkage system uses the pressure difference output control oil between the rod chamber and the rodless chamber when the scraping plate oil cylinder is fully extended or fully retracted to control the second three-way four-way hydraulic control valve connected to the sliding plate oil cylinder, and uses the pressure difference output control oil between the rod chamber and the rodless chamber when the sliding plate oil cylinder is fully extended or fully retracted to control the first three-way four-way hydraulic control valve connected to the scraping plate oil cylinder, so as to realize the linkage between the scraping plate oil cylinder and the sliding plate oil cylinder. Compared with the structure of the sensor and the induction plate of the existing scraping and sliding plate linkage system, it can completely avoid the phenomenon that the state detection device of the scraping plate oil cylinder fails due to being covered by garbage and dirt in a dirty working environment, and improve the working stability of the scraping and sliding mechanism.

[0021] The present invention also provides a scraping and sliding plate system for a garbage compactor and a garbage compactor. The scraping and sliding plate system for a garbage compactor and the garbage compactor include the above-mentioned scraping and sliding plate linkage system for a garbage compactor. Since the above-mentioned scraping and sliding plate linkage system for a garbage compactor has the above technical effects, the scraping and sliding plate system for a garbage compactor and the garbage compactor using the above-mentioned scraping and sliding plate linkage system for a garbage compactor should also have the above technical effects, which will not be elaborated here. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a structural schematic diagram of a scraping and sliding plate linkage system for a garbage compactor in the prior art;

[0024] Figure 2 It is a schematic diagram of the loading process of a garbage compactor;

[0025] Figure 3 It is a structural schematic diagram of a scraping and sliding plate linkage system for a garbage compactor provided by an embodiment of the present invention;

[0026] Figure 4 It is a structural schematic diagram of a differential pressure signal sending module of a scraping and sliding plate linkage system for a garbage compactor provided by an embodiment of the present invention;

[0027] Figure 5 It is a partial schematic diagram of a differential pressure signal sending module and a scraping plate oil cylinder of a scraping and sliding plate linkage system for a garbage compactor provided by an embodiment of the present invention;

[0028] Figure 6 It is a working state diagram of a scraping plate oil cylinder of a scraping and sliding plate linkage system for a garbage compactor provided by an embodiment of the present invention.

[0029] Figure 1 Wherein:

[0030] 01 is the slide plate; 02 is the scraper; 03 is the scraper oil cylinder; 04 is the slide plate oil cylinder; 05 is the sensor; 06 is the induction plate;

[0031] Figures 2 - 6 Among them:

[0032] 1 is the slide plate; 2 is the scraper; 3 is the scraper oil cylinder; 4 is the slide plate oil cylinder; 5 is the first three-position four-way hydraulic control valve; 6 is the second three-position four-way hydraulic control valve; 7, 8, 9, 10 are differential pressure signal modules; 11, 12 are two-position four-way hydraulic control valves; 13 is a two-position four-way solenoid valve; 14 is a cartridge valve; 15 is a throttle component; 16 is a check valve. Specific implementation manner

[0033] One of the cores of the present invention is to provide a scraping and sliding plate linkage system for a garbage compactor. The structural design of the scraping and sliding plate linkage system for the garbage compactor can prevent the sensor for detecting the working state of the scraper oil cylinder from being covered by garbage and failing, improve its reliability in a dirty environment, and ensure the normal progress of garbage collection and transportation operations.

[0034] Another core of the present invention is to provide a garbage compactor based on the above-mentioned scraping and sliding plate linkage system for a garbage compactor.

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] The embodiments of the present application provide a scraping and sliding plate linkage system for a garbage compactor and a garbage compactor. Before explaining the technical solutions provided in the embodiments of the present application, the related technologies involved in the present application will be explained first.

[0037] In the related technology, the scraping and sliding mechanism includes a slide plate 1 slidably disposed between the hopper and the garbage bin of the garbage compactor and a scraper 2 hinged to the slide plate 1. A slide plate oil cylinder 4 is disposed between the slide plate 1 and the hopper, and a scraper oil cylinder 3 is disposed between the scraper 2 and the slide plate 1. Both ends of the scraper oil cylinder 3 are respectively hinged to the scraper 2 and the slide plate 1.

[0038] In the initial state, as Figure 2 shown in a, both the slide plate oil cylinder 4 and the scraper oil cylinder 3 are in the extended state, the scraper 2 is in a folded state relative to the slide plate 1, and the scraper 2 and the slide plate 1 cooperate to separate the hopper from the garbage bin;

[0039] After obtaining the garbage compaction instruction, as Figure 2As shown in Fig. b, the scraper oil cylinder 3 retracts, the scraper 2 opens relative to the slide plate 1, and is ready to insert loose garbage. After the scraper 2 opens relative to the slide plate 1 in place, that is, after the detection component in the scraper-slide plate linkage system issues an instruction, the slide plate oil cylinder 4 retracts, the slide plate 1 descends, and the scraper 2 inserts into the garbage for crushing and the first compression, as Figure 2 shown in Fig. c;

[0040] Then, according to the instruction continuously input by the user or the detection and control of the slide plate 1 and the slide plate oil cylinder 4, the scraper oil cylinder 3 is extended, so that the scraper 2 rotates towards the direction of the garbage bin to further compress the garbage, as Figure 2 shown in Fig. d. When the scraper 2 rotates in place relative to the slide plate 1, the detection component in the scraper-slide plate linkage system issues an instruction, the slide plate oil cylinder 4 extends, the slide plate 1 moves upward, and the scraper-slide mechanism returns to the initial position, as Figure 2 shown in Fig. e, and is ready for the next compression operation.

[0041] In the above description, the slide plate 1 moves upward when the slide plate oil cylinder 4 extends and moves downward when the slide plate oil cylinder 4 retracts. The scraper 2 is in the folded position relative to the slide plate 1 when the scraper oil cylinder 3 extends and is in the open position relative to the slide plate 1 when the scraper oil cylinder 3 retracts. This is not absolute. In actual applications, it can be reversed, so that the slide plate 1 moves downward when the slide plate oil cylinder 4 extends and moves upward when the slide plate oil cylinder 4 retracts, or the scraper 2 is in the open position relative to the slide plate 1 when the scraper oil cylinder 3 extends and is in the folded position relative to the slide plate 1 when the scraper oil cylinder 3 retracts.

[0042] Next, the scraper-slide plate linkage system of the garbage compactor provided by the embodiment of the present application will be described.

[0043] Please refer to Figure 3 , Figure 3 , which is a schematic structural diagram of the scraper-slide plate linkage system of the garbage compactor provided by the embodiment of the present invention.

[0044] A linkage system for a scraping slide plate of a garbage compactor provided by an embodiment of the present invention. The linkage system for the scraping slide plate of the garbage compactor includes a scraper oil cylinder 3, a slide plate oil cylinder 4, a first three-position four-way hydraulic control valve 5, a second three-position four-way hydraulic control valve 6, a differential pressure control device for the scraper oil cylinder, and a differential pressure control device for the slide plate oil cylinder. Among them, two working ports of the first three-position four-way hydraulic control valve 5 are respectively communicated with two working ports of the scraper oil cylinder 3, two working ports of the second three-position four-way hydraulic control valve 6 are respectively communicated with two working ports of the slide plate oil cylinder 4, an oil intake control port of the differential pressure control device for the scraper oil cylinder is communicated with the scraper oil cylinder 3, an oil outlet control port of the differential pressure control device for the scraper oil cylinder is respectively connected with two control ports of the second three-position four-way hydraulic control valve 6, an oil intake control port of the differential pressure control device for the slide plate oil cylinder is communicated with the slide plate oil cylinder 4, an oil outlet control port of the differential pressure control device for the slide plate oil cylinder is respectively connected with two control ports of the first three-position four-way hydraulic control valve 5. The differential pressure control device for the scraper oil cylinder is used to output control oil to control the second three-position four-way hydraulic control valve 6 to switch to the left position or the right position when the scraper oil cylinder 3 is in the fully extended state and the fully retracted state. The differential pressure control device for the slide plate oil cylinder is used to output control oil to control the first three-position four-way hydraulic control valve 5 to switch to the left position or the right position when the slide plate oil cylinder 4 is in the fully extended state and the fully retracted state; during garbage compaction operation, when the scraper oil cylinder 3 is fully retracted, the scraper 2 is opened relative to the slide plate 1, the pressure in the rod chamber of the scraper oil cylinder 3 increases more than the pressure in the rodless chamber. At this time, the hydraulic oil in the scraper oil cylinder 3 is output to the right control port of the second three-position four-way hydraulic control valve 6 through the differential pressure control device for the scraper oil cylinder, and the second three-position four-way hydraulic control valve 6 switches to the right working position. The rod chamber of the slide plate oil cylinder 4 is communicated with the oil pump through the second three-position four-way hydraulic control valve 6, and the rodless chamber of the slide plate oil cylinder 4 is communicated with the fuel tank through the second three-position four-way hydraulic control valve 6. The slide plate oil cylinder 4 retracts, completing the opening of the scraper 2 and the downward movement of the slide plate 1; when the slide plate oil cylinder 4 is fully retracted, the pressure in the rod chamber of the slide plate oil cylinder 4 increases more than the pressure in the rodless chamber. At this time, the hydraulic oil in the slide plate oil cylinder 4 is output to the left control port of the first three-position four-way hydraulic control valve 5 through the differential pressure control device for the slide plate oil cylinder, and the first three-position four-way hydraulic control valve 5 switches to the left working position. The rod chamber of the scraper oil cylinder 3 is communicated with the fuel tank through the first three-position four-way hydraulic control valve 5, and the rodless chamber of the scraper oil cylinder 3 is communicated with the oil pump through the first three-position four-way hydraulic control valve 5. The scraper 2 extends, and the scraper 2 is in a folded state relative to the slide plate 1. When the scraper oil cylinder 3 extends in place, the pressure in the rodless chamber of the scraper oil cylinder 3 increases more than the pressure in the rod chamber. The hydraulic oil in the scraper oil cylinder 3 is output to the left control port of the second three-position four-way hydraulic control valve 6 through the differential pressure control device for the scraper oil cylinder, and the second three-position four-way hydraulic control valve 6 switches to the left working position. The rodless chamber of the slide plate oil cylinder 4 is communicated with the oil pump through the second three-position four-way hydraulic control valve 6, and the rod chamber of the slide plate oil cylinder 4 is communicated with the fuel tank through the second three-position four-way hydraulic control valve 6. The slide plate oil cylinder 4 extends, and the slide plate 1 moves upward, completing the scraping and closing of the scraper 2 and the upward movement of the slide plate 1, that is, the scraping and compaction of garbage.

[0045] Compared with the prior art, the garbage compression truck scraping and sliding plate linkage system provided by the present invention uses the pressure difference output of the rod chamber and the rodless chamber when the scraping plate oil cylinder 3 is fully extended or fully retracted to control the oil to control the second three-position four-way hydraulic control valve 6 connected to the sliding plate oil cylinder 4, and uses the pressure difference output of the rod chamber and the rodless chamber when the sliding plate oil cylinder 4 is fully extended or fully retracted to control the oil to control the first three-position four-way hydraulic control valve 5 connected to the scraping plate oil cylinder 3, so as to realize the linkage between the scraping plate oil cylinder 3 and the sliding plate oil cylinder 4. Compared with the structure of the sensor and the induction plate of the existing scraping and sliding plate linkage system, it can completely avoid the phenomenon that the state detection device of the scraping plate oil cylinder 3 fails due to being covered by garbage and dirt in a dirty working environment, and improve the working stability of the scraping and sliding mechanism.

[0046] Exemplarily, as Figures 3 - 5 shown, in an embodiment of the present invention, the scraping plate oil cylinder pressure difference control device and the sliding plate oil cylinder pressure difference control device respectively include two pressure difference signal transmission modules. As Figure 4 shown, the pressure difference signal transmission modules 7, 8, 9, 10 include cartridge valves 14 and check valves 16. The cartridge valve 14 and the check valve 16 are connected in series between the two working ports of the pressure difference signal transmission module that serves as the oil intake control port of the pressure difference control devices 7, 8, 9, 10. The check valve 16 is located on the side of the working chamber of the cartridge valve 14 away from the control chamber of the cartridge valve 14. The check valve 16 is used for one-way conduction from the scraping plate oil cylinder 3 to the direction of the cartridge valve 14; the oil outlets of the working chambers of the cartridge valves 14 of the two pressure difference signal transmission modules 7, 8 of the scraping plate oil cylinder pressure difference control device are used as the oil outlet control ports of the scraping plate oil cylinder pressure difference control device and are respectively connected to the two control ports of the second three-position four-way hydraulic control valve 6. One of the two working ports of the two pressure difference signal transmission modules 7, 8 of the scraping plate oil cylinder pressure difference control device is respectively connected to the rod chamber and the rodless chamber of the scraping plate oil cylinder 3 when the scraping plate oil cylinder 3 is in the fully extended state, and the other of the two working ports of the two pressure difference signal transmission modules 7, 8 of the scraping plate oil cylinder pressure difference control device is respectively connected to the rod chamber and the rodless chamber of the scraping plate oil cylinder 3 when the scraping plate oil cylinder 3 is in the fully retracted state; the oil outlets of the working chambers of the cartridge valves 14 of the two pressure difference signal transmission modules 9, 10 of the sliding plate oil cylinder pressure difference control device are used as the oil outlet control ports of the sliding plate oil cylinder pressure difference control device and are respectively connected to the two control ports of the first three-position four-way hydraulic control valve 5. One of the two working ports of the two pressure difference signal transmission modules of the sliding plate oil cylinder pressure difference control device is respectively connected to the rod chamber and the rodless chamber of the sliding plate oil cylinder 4 when the sliding plate oil cylinder 4 is in the fully extended state, and the other of the two working ports of the two pressure difference signal transmission modules 9, 10 of the sliding plate oil cylinder pressure difference control device is respectively connected to the rod chamber and the rodless chamber of the sliding plate oil cylinder 4 when the sliding plate oil cylinder 4 is in the fully retracted state. As Figure 5 shown.

[0047] Of course, the differential pressure control device of the scraper oil cylinder and the differential pressure control device of the slide plate oil cylinder are not limited to the above structures. In another embodiment, the differential pressure control device of the scraper oil cylinder and the differential pressure control device of the slide plate oil cylinder respectively include a two-position four-way hydraulic control valve and two differential pressure signal modules. The garbage compression truck scraping and sliding plate linkage system further includes a two-position four-way solenoid valve; the differential pressure signal module includes a cartridge valve 14 and a check valve 16. The cartridge valve 14 and the check valve 16 are connected in series between the two working ports of the differential pressure signal module serving as the oil intake control port of the differential pressure control device. The check valve 16 is located on the side of the working chamber of the cartridge valve 14 away from the control chamber of the cartridge valve 14. The check valve 16 is used for one-way conduction from the scraper oil cylinder 3 towards the cartridge valve 14; the oil outlets of the working chambers of the cartridge valves 14 of the two differential pressure signal modules 7 and 8 of the differential pressure control device of the scraper oil cylinder are respectively connected to the two control ports of the two-position four-way hydraulic control valve 12 of the differential pressure control device of the scraper oil cylinder. The two working ports of the two-position four-way hydraulic control valve 12 of the differential pressure control device of the scraper oil cylinder serve as the oil outlet control ports of the differential pressure control device of the scraper oil cylinder and are respectively connected to the two control ports of the second three-position four-way hydraulic control valve 6. When the scraper oil cylinder 3 is in the fully extended state, the two working ports of one of the two differential pressure signal modules 7 and 8 of the differential pressure control device of the scraper oil cylinder are respectively connected to the rod chamber and the rodless chamber of the scraper oil cylinder 3. When the scraper oil cylinder 3 is in the fully retracted state, the two working ports of the other of the two differential pressure signal modules 7 and 8 of the differential pressure control device of the scraper oil cylinder are respectively connected to the rod chamber and the rodless chamber of the scraper oil cylinder 3; the oil outlets of the working chambers of the cartridge valves 14 of the two differential pressure signal modules 9 and 10 of the differential pressure control device of the slide plate oil cylinder are respectively connected to the two control ports of the two-position four-way hydraulic control valve 11 of the differential pressure control device of the slide plate oil cylinder. The two working ports of the two-position four-way hydraulic control valve 11 of the differential pressure control device of the slide plate oil cylinder serve as the oil outlet control ports of the differential pressure control device of the slide plate oil cylinder and are respectively connected to the two control ports of the first three-position four-way hydraulic control valve 5. When the slide plate oil cylinder 4 is in the fully extended state, the two working ports of one of the two differential pressure signal modules 9 and 10 of the differential pressure control device of the slide plate oil cylinder are respectively connected to the rod chamber and the rodless chamber of the slide plate oil cylinder 4. When the slide plate oil cylinder 4 is in the fully retracted state, the two working ports of the other of the two differential pressure signal modules 9 and 10 of the differential pressure control device of the slide plate oil cylinder are respectively connected to the rod chamber and the rodless chamber of the slide plate oil cylinder 4; one working port of the two-position four-way solenoid valve 13 is respectively connected to the pressure oil port of the two-position four-way hydraulic control valve 12 of the differential pressure control device of the scraper oil cylinder and the pressure oil port of the two-position four-way hydraulic control valve 11 of the differential pressure control device of the slide plate oil cylinder.

[0048] Further, in the above two embodiments, the differential pressure signal module further includes a throttling member 15, and the throttling member 15 is connected in parallel at both ends of the cartridge valve 14.

[0049] The working principle of the differential pressure signal module is as follows:

[0050] When the rod chamber of the scraper oil cylinder 3 is the pressure chamber and the piston of the scraper oil cylinder 3 is in the state between the working ports a and b of the differential pressure signal module, as Figure 6 (1) shown, the pressure oil enters the working chamber of the cartridge valve 14 from the working port b through the check valve 16. The rodless chamber of the scraper oil cylinder 3 is the oil return chamber with a pressure of zero. The spool of the cartridge valve 14 moves leftward against the spring, and the oil outlet e of the cartridge valve 14 outputs control oil to control the second three-position four-way hydraulic control valve 6 or the two-position four-way hydraulic control valve 12 of the scraper oil cylinder differential pressure control device; when the rodless chamber of the scraper oil cylinder 3 is the pressure chamber and the piston of the scraper oil cylinder 3 is in the state between the working ports a and b of the differential pressure signal module, the check valve 16 cuts off the rod chamber and the rodless chamber of the scraper oil cylinder 3 to prevent the pressure oil in the rodless chamber of the scraper oil cylinder 3 from entering the rod chamber. The pressure oil enters the control chamber of the cartridge valve 14 through the working port a and acts on the spool, and after being depressurized by the throttling element 15, it enters the working chamber of the cartridge valve 14 and acts on the spool. Because the pressure acting on the spool in the control chamber is greater than the pressure acting on the spool in the working chamber, and the acting area of the spool in the control chamber of the cartridge valve 14 is larger than the acting area of the spool in the working chamber, the cartridge valve 14 closes, and the oil outlet e of the cartridge valve 14 does not output control oil;

[0051] When the piston of the scraper oil cylinder 3 is in the state between the working ports b and c of the two differential pressure signal modules, as Figure 6 (2) shown, the pressure oil enters the control chamber and the working chamber of the cartridge valve 14 through the working ports a, b and the working ports d, c respectively and acts on the spool. The pressure acting on the spool in the control chamber is the same as the pressure acting on the spool in the working chamber. Because the acting area of the spool in the control chamber is larger than the acting area of the spool in the working chamber, the cartridge valve 14 between the working ports a and b and the cartridge valve 14 between the working ports d and c close, and the oil outlets e and f of the two cartridge valves 14 do not output control oil;

[0052] When the rodless chamber of the scraper oil cylinder 3 is the pressure chamber and the piston is in the state between the working ports c and d of the differential pressure signal module, as Figure 6As shown in (3), the pressure oil enters the working chamber of the cartridge valve 14 from the working port c through the check valve 16. After the control chamber is connected to the rod chamber of the scraper cylinder 3, the rod chamber becomes the oil return chamber with a pressure of zero. The pressure acting on the working chamber spool is greater than the pressure acting on the control chamber spool. Therefore, the oil outlet f of the cartridge valve 14 opens, and the pressure oil enters the control end of the second three-position four-way hydraulic control valve 6 or the two-position four-way hydraulic control valve 12 of the scraper cylinder differential pressure control device through the oil outlet f of the cartridge valve 14. When the rod chamber of the scraper cylinder 3 is the pressure chamber and the piston is in the state between the working ports c and d of the differential pressure signal module, the check valve 16 cuts off the rod chamber and the rodless chamber of the scraper cylinder 3 to prevent the pressure oil in the rodless chamber of the scraper cylinder 3 from entering the rod chamber. The pressure oil enters the control chamber of the cartridge valve 14 through the working port d and acts on the spool, and after passing through the throttle member 15 to reduce the pressure, it enters the working chamber of the cartridge valve 14 and acts on the spool. Because the pressure acting on the control chamber spool of the cartridge valve 14 is greater than the pressure acting on the working chamber spool, and the acting area of the control chamber spool of the cartridge valve 14 is larger than the acting area of the working chamber spool, the cartridge valve 14 closes, and the oil outlet f of the cartridge valve 14 does not output control oil.

[0053] The working principle of the slide plate cylinder 4 and the differential pressure signal module thereon is basically the same as that of the scraper cylinder 3 and the differential pressure signal module thereon, and will not be elaborated here.

[0054] Preferably, the above-mentioned scraper and slide plate linkage system further includes an instruction acquisition module for acquiring user instructions. The instruction acquisition module is connected to the controller of the garbage truck scraper and slide plate linkage system. The controller of the garbage truck scraper and slide plate linkage system controls the energization or de-energization of the two-position four-way solenoid valve 13 according to the user instructions acquired by the instruction acquisition module. The instruction acquisition module includes, but is not limited to, a remote control, a touch screen, a keyboard, a voice receiving and recognition device, or a combination of at least two of the above four.

[0055] The following combines the attached Figure 3 To further describe the specific working process of a scraper and slide plate linkage system provided by an embodiment of the present invention.

[0056] During the garbage compaction operation, the electromagnet DT1 of the two-position four-way solenoid valve 13 is energized, and the second three-position four-way hydraulic control reversing valve is in the left working position. The slide plate cylinder 4 is under pressure and does not move. The cartridge valve 14 of the hydraulic signal module 10 is opened. The pressure oil in the rodless cavity of the slide plate cylinder 4 enters the left control end of the two-position four-way hydraulic control reversing valve 11 through the hydraulic signal module 10, causing the two-position four-way hydraulic control reversing valve 5 to be in the left working position. The pressure oil enters the right control end of the first three-position four-way hydraulic control reversing valve after passing through the two-position four-way hydraulic control reversing valve 5, causing the first three-position four-way hydraulic control reversing valve to be in the right working position. The scraper cylinder 3 retracts. When the retraction is in place, the pressure oil enters the right control end of the two-position four-way hydraulic control reversing valve 12 through the hydraulic signal module 7, causing the two-position four-way hydraulic control reversing valve 12 to be in the right working position. The pressure oil enters the right control end of the second three-position four-way hydraulic control reversing valve through the two-position four-way hydraulic control reversing valve 12, causing the second three-position four-way hydraulic control reversing valve to switch to the right working position. The slide plate cylinder 4 retracts. When the retraction is in place, the pressure oil enters the right control end of the two-position four-way hydraulic control reversing valve 11 through the hydraulic signal module 9, causing the two-position four-way hydraulic control reversing valve 11 to be in the right working position. The pressure oil enters the left control end of the first three-position four-way hydraulic control reversing valve through the two-position four-way hydraulic control reversing valve 11, causing the first three-position four-way hydraulic control reversing valve to switch to the left working position. The scraper cylinder 3 extends. When the extension is in place, the pressure oil enters the left control end of the two-position four-way hydraulic control reversing valve 12 through the hydraulic signal module 8, causing the two-position four-way hydraulic control reversing valve 12 to be in the left working position. The pressure oil enters the left control end of the second three-position four-way hydraulic control reversing valve through the two-position four-way hydraulic control reversing valve 12, causing the second three-position four-way hydraulic control reversing valve to switch to the left working position. The slide plate cylinder 4 extends. When the extension is in place, the garbage compaction is completed.

[0057] The embodiment of the present invention also provides a garbage compactor scraping and sliding plate system, including a scraper 2, a sliding plate 1, and the garbage compactor scraping and sliding plate linkage system as described in the above embodiment. The sliding plate 1 is slidably arranged in the carriage of the garbage compactor, and the carriage is composed of a hopper and a garbage bin. The scraper 2 is rotatably arranged on the sliding plate 1, and the garbage compactor scraping and sliding plate linkage system is used to drive the scraper 2 and the sliding plate 1 to move.

[0058] Furthermore, the embodiment of the present invention also provides a garbage compactor including the above garbage compactor scraping and sliding plate system. Since both the garbage compactor scraping and sliding plate system and the garbage compactor adopt the garbage compactor scraping and sliding plate linkage system in the above embodiment, the technical effects of the garbage compactor scraping and sliding plate system and the garbage compactor please refer to the above embodiment.

[0059] Preferably, a first garbage quantity detection device may be arranged in the hopper of the garbage compactor. The first garbage quantity detection device may be a combination of one or more of a weight detection device, a volume detection device, a position detection device, and a camera device. It is used to detect the quantity of garbage entering the hopper. When the quantity of garbage in the hopper exceeds a first preset value, feedback can be given to the user through the above feedback module, or when the controller detects that the quantity of garbage in the hopper exceeds the first preset value, it automatically controls the electromagnet DT1 of the two-position four-way solenoid valve 13 to be energized to perform garbage compression operation. The feedback module includes but is not limited to a display, a prompting sound, or a vibration notification device.

[0060] Furthermore, a second garbage quantity detection device may also be arranged in the garbage bin of the garbage compactor to detect the quantity of garbage in the garbage bin. Similar to the above first garbage quantity detection device, the second garbage quantity detection device may be composed of a combination of one or more of a weight detection device, a volume detection device, a position detection device, and a camera device. When the quantity of garbage in the garbage bin exceeds a second preset value, an alarm is given to the user through the above feedback module, enabling the user to promptly operate the garbage compactor to a designated location for garbage dumping.

[0061] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0062] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A linkage system for a garbage compactor scraping slide plate, characterized in that, It includes a scraper oil cylinder, a slide plate oil cylinder, a first three-position four-way hydraulic control valve, a second three-position four-way hydraulic control valve, a differential pressure control device for the scraper oil cylinder, and a differential pressure control device for the slide plate oil cylinder. Two working ports of the first three-position four-way hydraulic control valve are respectively communicated with two working ports of the scraper oil cylinder. Two working ports of the second three-position four-way hydraulic control valve are respectively communicated with two working ports of the slide plate oil cylinder. An oil intake control port of the differential pressure control device for the scraper oil cylinder is communicated with the scraper oil cylinder. An oil outlet control port of the differential pressure control device for the scraper oil cylinder is respectively connected with two control ports of the second three-position four-way hydraulic control valve. An oil intake control port of the differential pressure control device for the slide plate oil cylinder is communicated with the slide plate oil cylinder. An oil outlet control port of the differential pressure control device for the slide plate oil cylinder is respectively connected with two control ports of the first three-position four-way hydraulic control valve. The differential pressure control device for the scraper oil cylinder is used to output control oil when the scraper oil cylinder is in a fully extended state and a fully retracted state to control the second three-position four-way hydraulic control valve to switch to the left position or the right position. The differential pressure control device for the slide plate oil cylinder is used to output control oil when the slide plate oil cylinder is in a fully extended state and a fully retracted state to control the first three-position four-way hydraulic control valve to switch to the left position or the right position; The differential pressure control device for the scraper oil cylinder and the differential pressure control device for the slide plate oil cylinder respectively include two differential pressure signal modules. The differential pressure signal module includes a cartridge valve and a check valve. The cartridge valve and the check valve are connected in series between two working ports of the differential pressure signal module serving as the oil intake control port of the differential pressure control device. The check valve is located on a side of the working chamber of the cartridge valve away from the control chamber of the cartridge valve. The check valve is used for unidirectional conduction from the scraper oil cylinder to the direction of the cartridge valve; Oil outlet ports of the working chambers of the cartridge valves of the two differential pressure signal modules of the differential pressure control device for the scraper oil cylinder are used as oil outlet control ports of the differential pressure control device for the scraper oil cylinder and are respectively connected with two control ports of the second three-position four-way hydraulic control valve. Two working ports of one of the two differential pressure signal modules of the differential pressure control device for the scraper oil cylinder are respectively communicated with the rod chamber and the rodless chamber of the scraper oil cylinder when the scraper oil cylinder is in a fully extended state. Two working ports of the other of the two differential pressure signal modules of the differential pressure control device for the scraper oil cylinder are respectively communicated with the rod chamber and the rodless chamber of the scraper oil cylinder when the scraper oil cylinder is in a fully retracted state; The oil outlet ports of the working chambers of the cartridge valves of the two differential pressure signal modules of the skateboard oil cylinder differential pressure control device are used as the oil outlet control ports of the skateboard oil cylinder differential pressure control device and are respectively connected to the two control ports of the first three-position four-way hydraulic control valve. Two working ports of one of the two differential pressure signal modules of the skateboard oil cylinder differential pressure control device are respectively communicated with the rod chamber and the rodless chamber of the skateboard oil cylinder when the skateboard oil cylinder is in the fully extended state. Two working ports of the other of the two differential pressure signal modules of the skateboard oil cylinder differential pressure control device are respectively communicated with the rod chamber and the rodless chamber of the skateboard oil cylinder when the skateboard oil cylinder is in the fully retracted state.

2. The garbage truck scraping skateboard linkage system according to claim 1, characterized in that The differential pressure signal module further includes a throttling element, and the throttling element is connected in parallel at both ends of the cartridge valve.

3. The garbage truck scraping skateboard linkage system according to claim 1, characterized in that, The scraper oil cylinder differential pressure control device and the skateboard oil cylinder differential pressure control device respectively include a two-position four-way hydraulic control valve and two differential pressure signal modules, and the garbage truck scraper skateboard linkage system further includes a two-position four-way solenoid valve; The differential pressure signal module includes a cartridge valve and a check valve. The cartridge valve and the check valve are connected in series between the two working ports of the differential pressure signal module serving as the oil extraction control port of the differential pressure control device. The check valve is located on the side of the working chamber of the cartridge valve away from the control chamber of the cartridge valve, and the check valve is used for one-way conduction from the scraper oil cylinder to the direction of the cartridge valve; The oil outlet ports of the working chambers of the cartridge valves of the two differential pressure signal modules of the scraper oil cylinder differential pressure control device are respectively connected to the two control ports of the two-position four-way hydraulic control valve of the scraper oil cylinder differential pressure control device. The two working ports of the two-position four-way hydraulic control valve of the scraper oil cylinder differential pressure control device are used as the oil outlet control ports of the scraper oil cylinder differential pressure control device and are respectively connected to the two control ports of the second three-position four-way hydraulic control valve. Two working ports of one of the two differential pressure signal modules of the scraper oil cylinder differential pressure control device are respectively communicated with the rod chamber and the rodless chamber of the scraper oil cylinder when the scraper oil cylinder is in the fully extended state. Two working ports of the other of the two differential pressure signal modules of the scraper oil cylinder differential pressure control device are respectively communicated with the rod chamber and the rodless chamber of the scraper oil cylinder when the scraper oil cylinder is in the fully retracted state; The oil outlets of the working chambers of the cartridge valves of the two differential pressure signal modules of the skateboard oil cylinder differential pressure control device are respectively connected to the two control ports of the two-position four-way hydraulic control valve of the skateboard oil cylinder differential pressure control device. The two working ports of the two-position four-way hydraulic control valve of the skateboard oil cylinder differential pressure control device are used as the oil outlet control ports of the skateboard oil cylinder differential pressure control device and are respectively connected to the two control ports of the first three-position four-way hydraulic control valve. Two working ports of one of the two differential pressure signal modules of the skateboard oil cylinder differential pressure control device are respectively communicated with the rod chamber and the rodless chamber of the skateboard oil cylinder when the skateboard oil cylinder is in the fully extended state. Two working ports of the other of the two differential pressure signal modules of the skateboard oil cylinder differential pressure control device are respectively communicated with the rod chamber and the rodless chamber of the skateboard oil cylinder when the skateboard oil cylinder is in the fully retracted state; One working port of the two-position four-way solenoid valve is respectively connected to the pressure oil port of the two-position four-way hydraulic control valve of the scraper oil cylinder differential pressure control device and the pressure oil port of the two-position four-way hydraulic control valve of the skateboard oil cylinder differential pressure control device.

4. The garbage compactor scraping slide linkage system according to claim 3, wherein, The differential pressure signal module further includes a throttling member, and the throttling member is connected in parallel at both ends of the cartridge valve.

5. The garbage compactor scraping slide linkage system according to claim 3 or 4, characterized in that, It further includes an instruction acquisition module for acquiring user instructions. The instruction acquisition module is connected to the controller of the garbage truck scraping skateboard linkage system. The controller of the garbage truck scraping skateboard linkage system controls the two-position four-way solenoid valve to be energized or de-energized according to the user instructions acquired by the instruction acquisition module.

6. A garbage compression truck scraping skateboard system, characterized in that, It includes a scraper, a skateboard, and the garbage truck scraping skateboard linkage system according to any one of claims 1-5. The skateboard is slidably arranged in the carriage of the garbage truck. The scraper is rotatably arranged on the skateboard. The garbage truck scraping skateboard linkage system is used to drive the scraper and the skateboard to act.

7. A garbage compactor, characterized in that, It includes the garbage truck scraping skateboard system according to claim 6.

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