Buffer system of filler of compression type garbage truck and compression type garbage truck

Abstract

The present invention relates to a buffer system of a compression type garbage truck filler and a compression type garbage truck, wherein the buffer system comprises a switch module, an upper data processing module, a filler opening and closing oil cylinder, a filler opening and closing valve, a filler locking valve and a filler buffer valve; the upper data processing module is used to control the oil inlet and oil outlet of the filler opening and closing valve to be connected and the filler buffer valve to be closed after receiving a filler opening signal sent by the switch module, and to open the filler buffer valve after a first preset time until the filler is in place, and to control the filler locking valve and the filler buffer valve to be connected after receiving a filler closing signal sent by the switch module, and to control the filler buffer valve to be closed after a second preset time until the filler is closed in place. The impact of the filler is greatly reduced, the operating experience of the operator is improved, and the safety of the whole vehicle is improved.

Description

Technical Field

[0001] The present application relates to the technical field of garbage disposal and sanitation equipment, and in particular to a buffer system of a compression type garbage truck filler and a compression type garbage truck. Background Art

[0002] The compression garbage truck is a special vehicle for garbage collection and transportation, which consists of a sealed garbage compartment, a hydraulic system, and an operating system. The whole vehicle is fully sealed, and the sewage during the compression process is automatically compressed and dumped. All sewage enters the sewage compartment, which thoroughly solves the problem of secondary pollution during garbage transportation and avoids inconvenience to people. The key components are imported components, which have the advantages of high pressure, good sealing, easy operation, and safety. The rear hanging bucket flip mechanism or garbage bucket flip mechanism can be optionally equipped.

[0003] In the existing compression garbage trucks, when the filler of the upper system is opened or closed, due to its large mass, the filler will cause impact to the entire vehicle, causing a bad operating experience for the operator and posing certain safety hazards to the entire vehicle in uneven terrain, especially downhill terrain. Summary of the invention

[0004] In view of the above problems, the present application provides a buffer system for a compression garbage truck filler and a compression garbage truck, which solves the problem that the filler of the existing compression garbage truck causes impact on the entire vehicle when it is opened or closed, causing a bad experience for the operator and possible safety hazards.

[0005] To achieve the above-mentioned purpose, the inventor provides a buffer system for a compression garbage truck filler, including a switch module, an upper data processing module, a filler opening and closing cylinder, a filler opening and closing valve, a filler locking valve and a filler buffer valve;

[0006] The switch module is connected to the upper data processing module, and the switch module is used to send a filler opening signal or a filler closing signal to the upper data processing module;

[0007] The control end of the filler opening and closing valve is connected to the upper data processing module, the oil inlet of the filler opening and closing valve is connected to the oil outlet of the pressure oil source, the oil return port of the filler opening and closing valve is connected to the oil return circuit of the hydraulic system, the oil outlet of the filler opening and closing valve is connected to the filler opening and closing oil cylinder through the filler locking valve, and the filler opening and closing valve is used to provide pressure oil for the filler opening and closing oil cylinder;

[0008] The oil inlet of the filler buffer valve is connected to the oil outlet of the filler opening and closing valve, the oil outlet of the filler buffer valve is connected to the oil return port of the pressure oil source, and the control end of the filler buffer valve is connected to the upper data processing module;

[0009] The filler opening and closing oil cylinder is used to open or close the filler;

[0010] The control end of the filler locking valve is connected to the upper data processing module;

[0011] The upper data processing module is used to control the oil inlet and oil outlet of the filler opening and closing valve to be connected and the filler buffer valve to be closed after receiving the filler opening signal sent by the switch module, and to open the filler buffer valve after a first preset time, until the filler opening and closing cylinder opens the filler and the filler is in place, and then closes the control filler opening and closing valve and the filler buffer valve, and when receiving the filler closing signal sent by the switch module, controls the filler locking valve to be connected and the filler buffer valve to be connected, and after a second preset time, controls the filler buffer valve to be closed until the filler is closed.

[0012] Further optimization further includes a first trigger unit and a second trigger unit;

[0013] The first trigger unit is connected to the upper data processing module, and the first trigger unit is used to detect whether the filler is opened in place;

[0014] The second trigger unit is connected to the upper data processing module, and the second trigger unit is used to detect whether the filler is closed in place.

[0015] Further optimization, the first trigger unit and the second trigger unit are both proximity switches.

[0016] Further optimization also includes a one-way throttle valve, which is arranged at the oil outlet of the filler opening and closing valve.

[0017] Further optimization also includes hook lock cylinder and hook lock valve;

[0018] The first oil port of the lock hook oil cylinder is connected to the oil outlet of the filler opening and closing valve, and the second oil port of the lock hook oil cylinder is connected to the oil outlet of the lock hook locking valve. The lock hook oil cylinder is used to open the filler lock hook or lock the filler lock hook;

[0019] The oil inlet of the lock hook locking valve is connected to the oil outlet of the pressure oil source, the oil return port of the lock hook locking valve is connected to the oil return port of the pressure oil source, and the control end of the lock hook locking valve is connected to the upper body data processing module;

[0020] The upper data processing module is also used to control the lock hook cylinder to open the stuffing hook through the stuffing opening and closing valve when a stuffing opening signal is received, and to control the lock hook cylinder to lock the stuffing hook through the lock hook locking valve when the stuffing is closed in place.

[0021] Further optimization, the filler opening and closing valve is the right chamber valve of the three-position four-way solenoid valve, the locking hook locking valve is the left chamber valve of the three-position four-way solenoid valve, and the middle position function of the three-position four-way solenoid valve is Y-type.

[0022] Further optimization also includes a third trigger unit, which is connected to the upper data processing module and is used to detect whether the locking hook cylinder is locked in place.

[0023] Further optimization is performed by providing a hydraulic lock between the first oil port and the second oil port of the locking hook cylinder.

[0024] Further optimization, the switch module is a knob switch.

[0025] Another technical solution is also provided: a compression type garbage truck having the above-mentioned buffer system.

[0026] Different from the prior art, in the above technical solution, the operator can control the filler to open or close through the switch module, and when the filler opening signal is sent through the switch module, the upper data processing module controls the filler opening and closing valve to be energized and the filler buffer valve to be de-energized. At this time, the oil inlet and oil outlet of the filler opening and closing valve are connected and the filler buffer valve is closed. The pressure oil of the pressure oil source enters from the oil inlet of the filler opening and closing valve, and enters the filler opening and closing cylinder from the oil outlet of the filler opening and closing valve through the filler locking valve, and the filler opening and closing cylinder drives The filler is lifted and opened. At this time, the filler is in the normal speed opening state. After the first preset time, the upper data processing module controls the filler buffer valve to be energized. This time the filler buffer valve is turned on, and the pressure oil of the pressure oil source enters from the oil inlet of the filler opening and closing valve and goes out from the oil outlet of the filler opening and closing valve. At the same time, it enters the filler opening and closing cylinder from the filler locking valve and flows into the return oil port of the pressure oil source from the filler buffer valve. Therefore, the pressure oil entering the filler opening and closing cylinder is reduced. At this time, the filler is in the buffer opening state. The speed of the filling device is reduced, and the impact of the filling device opening and closing is reduced; when the filling device closing signal is sent through the switch module, the upper data processing unit controls the filling device locking valve to be energized and the filling device buffer valve to be energized. At this time, the filling device locking valve is turned on and the filling device buffer valve is turned on, and the filling device opening and closing cylinder is retracted under the gravity of the filling device. The hydraulic oil in the filling device opening and closing cylinder flows out through the filling device locking valve and flows into the return oil port of the pressure oil source through the filling device buffer valve and the filling device opening and closing valve respectively. At this time, the filling device is in a normal closed state; after the second preset time, the upper data processing module controls the filling device buffer valve to lose power. At this time, the filling device buffer valve is closed, and due to the smaller return oil diameter, the return oil flow rate of the hydraulic oil in the filling device opening and closing cylinder is reduced, and the retraction speed of the filling device opening and closing cylinder is slowed down, thereby reducing the closing speed of the filling device and reducing the closing impact of the filling device; by increasing the hydraulic buffer function of the filling device through the buffer system, the impact generated when the filling device is opened or closed is greatly reduced, the operating experience of the operator is improved, and the safety of the vehicle is improved.

[0027] The above-mentioned records related to the invention content are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the following is an explanation in combination with the specific implementation mode and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of the present application and other related contents, and shall not be considered as limitations of the present application.

[0029] In the drawings of the specification:

[0030] Figure 1 A schematic structural diagram of a buffer system of a compression type garbage truck filler according to a specific implementation method;

[0031] Figure 2 A circuit schematic diagram of a buffer system of a compression garbage truck filler according to a specific embodiment;

[0032] Figure 3 Another structural principle diagram of the buffer system of the compression type garbage truck filler described in the specific implementation method;

[0033] Figure 4 A working diagram of a buffer system of a compression type garbage truck filler according to a specific embodiment;

[0034] Figure 5 It is a structural schematic diagram of a compression type garbage truck described in a specific implementation method.

[0035] The reference numerals in the above drawings are described as follows:

[0036] 100. Buffer system;

[0037] 110. Filler opening and closing cylinder;

[0038] 120. Filler opening and closing valve;

[0039] 130. Stuffing device locking valve;

[0040] 140. Filler buffer valve;

[0041] 150. One-way throttle valve;

[0042] 160. Hook cylinder;

[0043] 170. Locking hook locking valve;

[0044] 180. Hydraulic lock;

[0045] 200. Compression garbage truck. DETAILED DESCRIPTION

[0046] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0047] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0048] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0049] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0050] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0051] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0052] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0053] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0054] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0055] See also Figure 1-3 , this embodiment provides a buffer system for a compression type garbage truck filler, including a switch module, an upper data processing module, a filler opening and closing cylinder 110, a filler opening and closing valve 120, a filler locking valve 130 and a filler buffer valve 140;

[0056] The switch module is connected to the upper data processing module, and the switch module is used to send a filler opening signal or a filler closing signal to the upper data processing module;

[0057] The control end of the filler opening and closing valve 120 is connected to the upper data processing module, the oil inlet of the filler opening and closing valve 120 is connected to the oil outlet of the pressure oil source, the oil return port of the filler opening and closing valve 120 is connected to the oil return port of the pressure oil source, and the oil outlet of the filler opening and closing valve 120 is connected to the filler opening and closing oil cylinder 110 through the filler locking valve 130, and the filler opening and closing valve 120 is used to provide pressure oil for the filler opening and closing oil cylinder 110;

[0058] The oil inlet of the filler buffer valve 140 is connected to the oil outlet of the filler on-off valve 120, the oil outlet of the filler buffer valve 140 is connected to the oil return port of the pressure oil source, and the control end of the filler buffer valve 140 is connected to the upper data processing module;

[0059] The filler opening and closing oil cylinder 110 is used to open or close the filler;

[0060] The control end of the filler locking valve 130 is connected to the upper data processing module;

[0061] The upper data processing module is used to control the oil inlet and oil outlet of the filler opening and closing valve 120 to be connected and the filler buffer valve 140 to be closed after receiving the filler opening signal sent by the switch module, and to open the filler buffer valve 140 after a first preset time, until the filler opening and closing cylinder 110 opens the filler in place, and then closes the control filler opening and closing valve 120 and the filler buffer valve 140, and when receiving the filler closing signal sent by the switch module, the filler locking valve 130 is turned on and the filler buffer valve 140 is turned on, and after a second preset time, the filler buffer valve 140 is controlled to be closed until the filler is closed in place.

[0062] The operator can control the filler to open or close through the switch module. When the filler opening signal is sent through the switch module, the upper data processing module controls the filler opening and closing valve 120 to be energized and the filler buffer valve 140 to be de-energized. At this time, the oil inlet and oil outlet of the filler opening and closing valve 120 are connected and the filler buffer valve 140 is closed. The pressure oil of the pressure oil source enters from the oil inlet of the filler opening and closing valve 120, and enters the filler opening and closing cylinder 110 from the oil outlet of the filler opening and closing valve 120 through the filler locking valve 130. The filler opening and closing cylinder 110 drives the filler to lift and open. , from then on the filler is in the normal speed opening state, and after the first preset time, the upper data processing module controls the filler buffer valve 140 to be energized, this time the filler buffer valve 140 is turned on, the pressure oil of the pressure oil source enters from the oil inlet of the filler opening and closing valve 120, and goes out from the oil outlet of the filler opening and closing valve 120, while entering the filler opening and closing cylinder 110 from the filler locking valve 130, and at the same time, it flows from the filler buffer valve 140 into the return oil port of the pressure oil source, so the pressure oil entering the filler opening and closing cylinder 110 is reduced, and the filler is in the buffer opening state at this time, and the filling device is in the arrival speed. The degree is reduced, reducing the impact of the filling device opening in place; and when the filling device closing signal is sent through the switch module, the upper data processing unit controls the filling device locking valve 130 to be energized and the filling device buffer valve 140 to be energized. At this time, the filling device locking valve 130 is turned on and the filling device buffer valve 140 is turned on, and the filling device opening and closing cylinder 110 is retracted under the gravity of the filling device. This time, the hydraulic oil in the filling device opening and closing cylinder 110 flows out through the filling device locking valve 130, and flows into the return oil port of the pressure oil source through the filling device buffer valve 140 and the filling device opening and closing valve 120 respectively. At this time, the filling device is in a normal closed state. closed state; and after the second preset time, the upper data processing module controls the filler buffer valve 140 to lose power, at which time the filler buffer valve 140 is closed, and due to the smaller return oil diameter, the return oil flow rate of the hydraulic oil in the filler opening and closing cylinder 110 becomes smaller, and the retraction speed of the filler opening and closing cylinder 110 becomes slower, thereby reducing the closing speed of the filler and reducing the closing impact of the filler; the hydraulic buffer function of the filler is increased by the buffer system, which greatly reduces the impact generated when the filler is opened or closed, improves the operating experience of the operator and improves the safety of the entire vehicle.

[0063] In some embodiments, it further includes a first trigger unit and a second trigger unit;

[0064] The first trigger unit is connected to the upper data processing module, and the first trigger unit is used to detect whether the filler is opened in place;

[0065] The second trigger unit is connected to the upper data processing module, and the second trigger unit is used to detect whether the filler is closed in place.

[0066] When the upper data processing module performs the filler opening action, the first trigger unit is used to detect whether the filler is fully opened. When the filler is fully opened, the upper data processing module stops the filler opening action; and when the upper data processing module performs the filler closing action, the second trigger unit is used to detect whether the filler is fully closed. When the filler is fully closed, the upper data processing module stops the filler closing action; wherein, the first trigger unit and the second trigger unit are both proximity switches. A proximity switch is a position switch that can be operated without mechanical direct contact with the moving parts. When an object approaches the sensing surface of the switch to the action distance, the switch can be operated without mechanical contact or any pressure, thereby driving a DC appliance or providing control instructions to a computer (PLC) device. A proximity switch is a switch-type sensor (i.e., a contactless switch). It has the characteristics of a travel switch and a micro switch, as well as sensing performance, and has reliable action, stable performance, fast frequency response, long application life, strong anti-interference ability, and is waterproof, shockproof, and corrosion-resistant. The products include inductive, capacitive, Hall, AC, and DC types. In other embodiments, the first trigger unit and the second trigger unit may also be closed by a travel card.

[0067] See also Figure 1 and Figure 3 In some embodiments, a one-way throttle valve 150 is further included, and the one-way throttle valve 150 is arranged at the oil outlet of the filler opening and closing valve 120. The one-way throttle valve 150 is a valve that controls the flow of fluid by changing the throttling section or the throttling length. The throttle valve and the one-way valve can be combined into a one-way throttle valve 150 by connecting the throttle valve and the one-way valve in parallel. The throttle valve and the one-way throttle valve 150 are simple flow control valves. In the quantitative pump hydraulic system, the throttle valve and the overflow valve cooperate to form three throttling speed control systems, namely, the oil inlet throttling speed control system, the oil return throttling speed control system and the bypass throttling speed control system. The one-way throttle valve 150 is widely used in the speed control and delay circuits of the hydraulic control system. It can be used as a one-way valve and a throttle valve. When the pressure oil flows out from the oil outlet of the filler, it is sent into the filler opening and closing cylinder 110 or the filler buffer valve 140 through the one-way valve of the one-way throttle valve 150. When the filler opening and closing cylinder 110 returns oil, the hydraulic oil in the filler opening and closing cylinder 110 is sent into the return oil port of the pressure oil source through the throttle valve of the one-way throttle valve 150.

[0068] See also Figure 2 and Figure 3 , in some embodiments, it also includes a hook lock cylinder 160 and a hook lock valve 170;

[0069] The first oil port of the locking hook oil cylinder 160 is connected to the oil outlet of the filler opening and closing valve 120, and the second oil port of the locking hook oil cylinder 160 is connected to the oil outlet of the locking hook locking valve 170. The locking hook oil cylinder 160 is used to open the filler locking hook or lock the filler locking hook;

[0070] The oil inlet of the lock hook locking valve 170 is connected to the oil outlet of the pressure oil source, the oil return port of the lock hook locking valve 170 is connected to the oil return port of the pressure oil source, and the control end of the lock hook locking valve 170 is connected to the upper body data processing module;

[0071] The upper data processing module is also used to control the lock hook cylinder 160 to open the stuffing hook through the stuffing opening and closing valve 120 when receiving the stuffing opening signal, and to control the lock hook cylinder 160 to lock the stuffing hook through the lock hook locking valve 170 when the stuffing is closed in place.

[0072] When the upper data processing unit is executing the filler opening action, the filler opening and closing valve 120 is first used to control the lock hook locking valve 170 to open the filler lock hook, so that the filler can be opened normally. When the upper data processing unit is executing the filler closing action, when the filler is closed in place, the lock hook cylinder 160 is controlled by the lock hook locking valve 170 to lock the filler lock hook. The filler opening and closing valve 120 is the right chamber valve of the three-position four-way solenoid valve, the lock hook locking valve 170 is the left chamber valve of the three-position four-way solenoid valve, and the middle position function of the three-position four-way solenoid valve is Y-type. The stuffing box opening and closing valve 120 and the lock hook locking valve 170 are both parts of the three-position four-way solenoid valve. The stuffing box opening and closing valve 120 is the right chamber valve of the three-position four-way solenoid valve, and the lock hook locking valve 170 is the left chamber valve of the three-position four-way solenoid valve. The oil outlet of the stuffing box opening and closing valve 120 is the right chamber oil outlet B of the three-position four-way solenoid valve, and the oil outlet of the lock hook locking valve 170 is the left chamber oil outlet A of the three-position four-way solenoid valve; the oil inlet of the stuffing box opening and closing valve 120 and the oil inlet of the lock hook locking valve 170 are both the oil inlet P of the stuffing box opening and closing valve 120, and the oil return port of the stuffing box opening and closing valve 120 and the oil return port of the lock hook locking valve 170 are both the oil return port T of the stuffing box opening and closing valve 120.

[0073] See also Figure 2 In some embodiments, a third trigger unit is further included, the third trigger unit being connected to the upper body data processing module, and the third trigger unit being used to detect whether the lock hook cylinder 160 is locked in place. When the lock hook cylinder 160 is used to lock the filler lock hook, the third trigger unit can be used to detect whether the lock hook cylinder 160 is locked in place.

[0074] In some embodiments, a hydraulic lock 180 is provided between the first oil port and the second oil port of the hook cylinder 160. The hydraulic lock 180 is essentially composed of two hydraulically controlled one-way valves. The hydraulic lock 180 is a "lock" that locks the circuit of the hook cylinder 160 and prevents the oil in the circuit from flowing, so as to ensure that the hook cylinder 160 can maintain its position and remain stationary even when there is a certain load from the outside.

[0075] In some embodiments, the switch module is a knob switch, which can output a filler opening signal or a filler closing signal by turning the knob of the knob switch to different positions, and in other embodiments, the switch module can also be a single-pole double-throw switch.

[0076] See also Figure 4 In some embodiments, the working process of a buffer system of a compression garbage truck filler is as follows:

[0077] (1) After turning on the working power, turn the knob switch to "filler on":

[0078] A. The upper data processing module automatically detects whether the proximity switch SQ1 (i.e., the first trigger unit) of the filler is fully opened and has a signal;

[0079] B. If the proximity switch SQ1 (i.e., the first trigger unit) of the filler opening position has a signal, it means that the filler is in the fully opened position and the filler opening action is completed.

[0080] C. If there is no signal from the proximity switch SQ1 (i.e., the first trigger unit) for the filler to be fully opened, it means that the filler is not in the fully opened position, and the filler opening action begins: the filler opening and closing valve 120 is energized, and the filler buffer valve 140 is de-energized. At this time, the filler is in the normal speed opening state, that is, the filler opening and closing valve 120 is in the right working position, and the two-position two-way solenoid valve of the filler buffer valve 140 is in the closed position. The pressure oil provided by the pressure oil source P goes out from the B port, passes through the one-way valve in the one-way throttle valve 150, and then enters the large cavity of the lock hook cylinder 160 and the filler locking solenoid valve through the lock hook hydraulic lock 180 and enters the filler opening and closing cylinder 110. Since the load of the lock hook cylinder 160 is smaller than that of the filler opening and closing cylinder 110, the lock hook cylinder 160 first acts to drive the filler lock hook to open. After the lock hook cylinder 160 is fully extended, the filler opening and closing cylinder 110 extends to drive the filler to lift and open.

[0081] D. After the filler is opened normally to the set time T1 (the first preset time), the filler opening and closing valve 120 and the filler buffer valve 140 are energized. At this time, the filler is in a buffered open state, that is, the filler opening and closing valve 120 is in the right working position, and the two-position two-way solenoid valve of the filler buffer valve 140 is in the conducting position. The pressure oil provided by the pressure oil source P goes out from the B port, passes through the one-way valve in the one-way throttle valve 150, and then passes through the two-position two-way solenoid valve and the throttle valve return oil of the filler buffer valve 140 and the filler locking solenoid valve to enter the filler opening and closing cylinder 110. Since part of the pressure oil provided by the pressure oil source P returns oil through the filler buffer valve 140, the pressure oil entering the filler opening and closing cylinder 110 is reduced, thereby reducing the filler in-place speed and reducing the opening and in-place impact of the filler.

[0082] E. When the filler buffer opens to the full position (there is a signal from the proximity switch SQ1 of the filler opening position), the filler opening action is completed.

[0083] (2) After turning on the working power, turn the knob switch to "filler off":

[0084] A. The upper data processing module automatically detects whether the proximity switch SQ2 (second trigger unit) of the filler closing position has a signal;

[0085] B. If the proximity switch SQ2 (second trigger unit) of the filler closing position has a signal, it means that the filler is in the closed position, and the filler stops closing. Then the lock hook action starts, that is, the lock hook locking valve 170 is energized. The lock hook moves until the lock hook is locked in place and the proximity switch SQ3 (third trigger unit) has a signal, that is, the lock hook has been locked in place. At this time, the proximity switch SQ2 (second trigger unit) of the filler closing position and the proximity switch SQ3 (third trigger unit) of the lock hook locking in place both have signals, and the closing action of the filler ends.

[0086] C. If there is no signal from the proximity switch SQ2 (second trigger unit) for the stuffer to be fully closed, it means that the stuffer is not in the fully closed position, and the stuffer closing action begins: the stuffer locking solenoid valves DT2 and DT3 (the stuffer locking solenoid valves DT2 and DT3, i.e., the stuffer locking valve 130) are energized, and the stuffer buffer valve 140 is energized. At this time, the stuffer is in a normal speed closing state, i.e., the stuffer locking solenoid valve is open, the two-position two-way solenoid valve of the stuffer buffer valve 140 is in the conducting position, the stuffer opening and closing cylinder 110 is retracted under the gravity of the stuffer, and the hydraulic oil in the cylinder flows out through the stuffer locking solenoid valve, and then returns oil through the two-position two-way solenoid valve and the throttle valve of the stuffer buffer valve 140 and the throttle valve in the one-way throttle valve 150.

[0087] D. After the filler is normally closed to the set time T2 (the second preset time), the filler locking solenoid valves DT2 and DT3 are energized, and the filler buffer valve 140DT4 is de-energized. At this time, the filler is in a buffered closed state, that is, the filler locking solenoid valve is open, the two-position two-way solenoid valve of the filler buffer valve 140 is in the closed position, the filler opening and closing cylinder 110 is retracted under the gravity of the filler, and the hydraulic oil in the cylinder flows out through the filler locking solenoid valve, and then returns through the throttle valve in the one-way throttle valve 150. Since the two-position two-way solenoid valve of the filler buffer valve 140 is in the closed position, the return oil diameter becomes smaller, the return oil flow rate of the hydraulic oil in the cylinder becomes smaller, and the retraction speed of the filler opening and closing cylinder 110 becomes slower, thereby reducing the closing speed of the filler and reducing the closing impact of the filler.

[0088] E. When the filler buffer closes to the designated position (there is a signal from the proximity switch SQ2 indicating that the filler is closed to the designated position), the filler stops closing.

[0089] F. After the stuffing machine stops closing, the lock hook action begins, that is, the lock hook locking valve 170 is energized, the stuffing machine opening and closing valve 120 is in the left working position, and the pressure oil provided by the pressure oil source P goes out from port A, enters the small chamber of the lock hook cylinder 160 through the lock hook hydraulic lock 180, and drives the stuffing machine lock hook to close. The lock hook moves until the lock hook is locked in place and the proximity switch SQ3 (i.e., the third trigger unit) has a signal, that is, the lock hook has been locked in place. At this time, the proximity switch SQ2 (i.e., the second trigger unit) of the stuffing machine closing in place and the proximity switch SQ3 (i.e., the third trigger unit) of the lock hook locking in place both have signals, and the stuffing machine closing action is completed.

[0090] Through repeated tests, the buffer system of the compression garbage truck filler provided in the present application increases the hydraulic buffer function of the filler, greatly reduces the impact of the filler being opened or closed, improves the operating experience and improves the safety of the entire vehicle.

[0091] Please refer to Figure 1-3 and Figure 5 , another technical solution is also provided: a compression type garbage truck 200, wherein the compression type garbage truck 200 has the buffer system 100 of the compression type garbage truck filler in the above embodiment.

[0092] The buffer system 100 of the compression garbage truck filler includes a switch module, an upper data processing module, a filler opening and closing cylinder 110, a filler opening and closing valve 120, a filler locking valve 130 and a filler buffer valve 140;

[0093] The switch module is connected to the upper data processing module, and the switch module is used to send a filler opening signal or a filler closing signal to the upper data processing module;

[0094] The control end of the filler opening and closing valve 120 is connected to the upper data processing module, the oil inlet of the filler opening and closing valve 120 is connected to the oil outlet of the pressure oil source, the oil return port of the filler opening and closing valve 120 is connected to the oil return port of the pressure oil source, and the oil outlet of the filler opening and closing valve 120 is connected to the filler opening and closing oil cylinder 110 through the filler locking valve 130, and the filler opening and closing valve 120 is used to provide pressure oil for the filler opening and closing oil cylinder 110;

[0095] The oil inlet of the filler buffer valve 140 is connected to the oil outlet of the filler on-off valve 120, the oil outlet of the filler buffer valve 140 is connected to the oil return port of the pressure oil source, and the control end of the filler buffer valve 140 is connected to the upper data processing module;

[0096] The filler opening and closing oil cylinder 110 is used to open or close the filler;

[0097] The control end of the filler locking valve 130 is connected to the upper data processing module;

[0098] The upper data processing module is used to control the oil inlet and oil outlet of the filler opening and closing valve 120 to be connected and the filler buffer valve 140 to be closed after receiving the filler opening signal sent by the switch module, and to open the filler buffer valve 140 after a first preset time, until the filler opening and closing cylinder 110 opens the filler in place, and then closes the control filler opening and closing valve 120 and the filler buffer valve 140, and when receiving the filler closing signal sent by the switch module, controls the filler locking valve 130 to be connected and the filler buffer valve 140 to be connected, and after a second preset time, controls the filler buffer valve 140 to be closed until the filler is closed in place.

[0099] The operator can control the filler to open or close through the switch module. When the filler opening signal is sent through the switch module, the upper data processing module controls the filler opening and closing valve 120 to be energized and the filler buffer valve 140 to be de-energized. At this time, the oil inlet and oil outlet of the filler opening and closing valve 120 are connected and the filler buffer valve 140 is closed. The pressure oil of the pressure oil source enters from the oil inlet of the filler opening and closing valve 120, and enters the filler opening and closing cylinder 110 from the oil outlet of the filler opening and closing valve 120 through the filler locking valve 130. The filler opening and closing cylinder 110 drives the filler to lift and open. , from then on the filler is in the normal speed opening state, and after the first preset time, the upper data processing module controls the filler buffer valve 140 to be energized, this time the filler buffer valve 140 is turned on, the pressure oil of the pressure oil source enters from the oil inlet of the filler opening and closing valve 120, and goes out from the oil outlet of the filler opening and closing valve 120, while entering the filler opening and closing cylinder 110 from the filler locking valve 130, and at the same time, it flows from the filler buffer valve 140 into the return oil port of the pressure oil source, so the pressure oil entering the filler opening and closing cylinder 110 is reduced, and the filler is in the buffer opening state at this time, and the filling device is in the arrival speed. The degree is reduced, reducing the impact of the filling device opening in place; when the filling device closing signal is sent through the switch module, the upper data processing unit controls and the filling device locking valve 130 and the filling device buffer valve 140 are energized. At this time, the filling device locking valve 130 is turned on and the filling device buffer valve 140 is turned on. The filling device opening and closing cylinder 110 is retracted under the gravity of the filling device. This time, the hydraulic oil in the filling device opening and closing cylinder 110 flows out through the filling device locking valve 130, and flows into the return oil port of the pressure oil source through the filling device buffer valve 140 and the filling device opening and closing valve 120 respectively. At this time, the filling device is in normal Closed state; and after the second preset time, the upper data processing module controls the filler buffer valve 140 to lose power, at which time the filler buffer valve 140 is closed, and due to the smaller return oil diameter, the return oil flow rate of the hydraulic oil in the filler opening and closing cylinder 110 becomes smaller, and the retraction speed of the filler opening and closing cylinder 110 becomes slower, thereby reducing the closing speed of the filler and reducing the closing impact of the filler; by increasing the hydraulic buffer function of the filler through the buffer system, the impact generated when the filler is opened or closed is greatly reduced, thereby improving the operating experience of the operator and improving the safety of the entire vehicle.

[0100] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A buffer system for a compression garbage truck filler, characterized in that: It includes a switch module, an upper data processing module, a filler opening and closing oil cylinder, a filler opening and closing valve, a filler locking valve and a filler buffer valve; The switch module is connected to the upper data processing module, and the switch module is used to send a filler opening signal or a filler closing signal to the upper data processing module; The control end of the filler opening and closing valve is connected to the upper data processing module, the oil inlet of the filler opening and closing valve is connected to the oil outlet of the pressure oil source, the oil return port of the filler opening and closing valve is connected to the oil return circuit of the hydraulic system, the oil outlet of the filler opening and closing valve is connected to the filler opening and closing oil cylinder through the filler locking valve, and the filler opening and closing valve is used to provide pressure oil for the filler opening and closing oil cylinder; The oil inlet of the filler buffer valve is connected to the oil outlet of the filler opening and closing valve, the oil outlet of the filler buffer valve is connected to the oil return port of the pressure oil source, and the control end of the filler buffer valve is connected to the upper data processing module; The filler opening and closing oil cylinder is used to open or close the filler; The control end of the filler locking valve is connected to the upper data processing module; The upper data processing module is used to control the oil inlet and oil outlet of the filler opening and closing valve to be connected and the filler buffer valve to be closed after receiving the filler opening signal sent by the switch module, and to open the filler buffer valve after a first preset time, until the filler opening and closing cylinder opens the filler in place, and then closes the filler opening and closing valve and the filler buffer valve, and when receiving the filler closing signal sent by the switch module, controls the filler locking valve to be connected and the filler buffer valve to be connected, and after a second preset time, controls the filler buffer valve to be closed until the filler is closed in place; Also includes a first trigger unit and a second trigger unit; The first trigger unit is connected to the upper data processing module, and the first trigger unit is used to detect whether the filler is opened in place; The second trigger unit is connected to the upper data processing module, and the second trigger unit is used to detect whether the filler is closed in place.

2. The buffer system of the compression type garbage truck filler according to claim 1, characterized in that: The first trigger unit and the second trigger unit are both proximity switches.

3. The buffer system of the compression type garbage truck filler according to claim 1, characterized in that: It also includes a one-way throttle valve, which is arranged at the oil outlet of the filler opening and closing valve.

4. The buffer system of the compression type garbage truck filler according to claim 1, characterized in that: It also includes a hook lock cylinder and a hook lock valve; The first oil port of the lock hook oil cylinder is connected to the oil outlet of the filler opening and closing valve, and the second oil port of the lock hook oil cylinder is connected to the oil outlet of the lock hook locking valve. The lock hook oil cylinder is used to open the filler lock hook or lock the filler lock hook; The oil inlet of the lock hook locking valve is connected to the oil outlet of the pressure oil source, the oil return port of the lock hook locking valve is connected to the oil return port of the pressure oil source, and the control end of the lock hook locking valve is connected to the upper body data processing module; The upper data processing module is also used to control the lock hook cylinder to open the stuffing hook through the stuffing opening and closing valve when a stuffing opening signal is received, and to control the lock hook cylinder to lock the stuffing hook through the lock hook locking valve when the stuffing is closed in place.

5. The buffer system of the compression type garbage truck filler according to claim 4, characterized in that: The filler opening and closing valve is the right chamber valve of the three-position four-way solenoid valve, the locking hook locking valve is the left chamber valve of the three-position four-way solenoid valve, and the middle position function of the three-position four-way solenoid valve is Y-type.

6. The buffer system of the compression type garbage truck filler according to claim 4, characterized in that: It also includes a third trigger unit, which is connected to the upper body data processing module and is used to detect whether the lock hook cylinder is locked in place.

7. The buffer system of the compression type garbage truck filler according to claim 4, characterized in that: A hydraulic lock is provided between the first oil port and the second oil port of the lock hook oil cylinder.

8. The buffer system of the compression type garbage truck filler according to claim 1, characterized in that: The switch module is a knob switch.

9. Compression garbage truck, characterized in that: The compression garbage truck has the buffer system described in any one of claims 1-8.

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