Automatic control system and method for compression garbage truck

Abstract

The application relates to an automatic control system and method of a compression garbage truck, which comprises an upper-mounted data processing module, wherein a chassis, a garbage can lifting mechanism rising valve, a garbage box cover closing valve, a garbage can lifting mechanism high position sensor and a garbage box cover in-place sensor are connected to the upper-mounted data processing module; the upper-mounted data processing module obtains corresponding engine rotating speed through the chassis; when the engine rotating speed is greater than a preset threshold value, the upper-mounted data processing module controls the garbage can lifting mechanism rising valve and the garbage box cover closing valve to be powered on; the upper-mounted data processing module controls the garbage box cover to close the garbage box, so that the garbage box cover in-place sensor generates an in-place signal; and the upper-mounted data processing module controls the garbage can lifting mechanism to rise to a high position, so that the garbage can lifting mechanism high position sensor generates a high position signal.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of compression garbage truck, in particular to a kind of compression garbage truck automatic control system and control method. BACKGROUND

[0002] Compression garbage truck, because it has efficient and convenient garbage collection and transportation capacity, is favored by users. Through extensive market research, it is understood that the existing compression garbage truck has the following problems in the process of garbage collection and transportation operation: such as Figure 6 As shown in the figure, the lifting mechanism at the rear of the compression garbage truck is in a low position and has not been raised, so that the departure angle of the whole vehicle is small, the passability is poor, and there is a safety hazard of tailing during vehicle driving. In addition, during loading operation, the cover plate of the filler should be opened first, and the lifting mechanism is operated to load the garbage; after loading is completed, the cover plate of the filler needs to be closed to ensure the closed transportation of the garbage. Because the cover plate of the filler has a prior relationship with the lifting of the lifting mechanism, the driver needs to close the cover plate in place first to ensure the closed transportation of the garbage, then raise the lifting mechanism to a high position, and then disconnect the power take-off and other upper loading power before driving the vehicle.

[0003] The above operation process of the existing compression garbage truck increases the operation steps of the sanitation worker, increases the waiting time of the vehicle, and cannot adapt to the existing fast-paced garbage collection and transportation operation requirements. At the same time, the driver often forgets to disconnect the power take-off and other upper loading power during driving operation, because as the vehicle speed increases and the engine (or driving motor) speed increases, the speed will be much higher than the maximum speed requirement of the power take-off or hydraulic pump in the upper loading power connection, which will cause damage to the upper loading power element.

[0004] In view of the problems existing in the prior art, the present application provides a compression garbage truck automatic control system and control method. SUMMARY

[0005] In view of the problems existing in the prior art, the present application provides a compression garbage truck automatic control system and control method, which can effectively solve at least one problem existing in the prior art.

[0006] The technical scheme of the present application is:

[0007] A compression garbage truck automatic control system, the compression garbage truck comprising a power take-off, a garbage bin cover plate, and a garbage can lifting mechanism, the power take-off obtains power from the engine of the compression garbage truck when working to drive the garbage bin cover plate and the garbage can lifting mechanism, the garbage can lifting mechanism is used to lift and overturn the garbage can during loading of the compression garbage truck, and the garbage bin cover plate is used to close the garbage bin after loading of the compression garbage truck is completed.

[0008] The upper-mounted data processing module is connected with a chassis, a garbage can lifting mechanism rising valve, a garbage box cover closing valve, a garbage can lifting mechanism high position sensor and a garbage box cover plate in place sensor. The upper-mounted data processing module obtains the corresponding engine speed through the chassis. When the engine speed is greater than a preset threshold, the upper-mounted data processing module controls the garbage can lifting mechanism rising valve and the garbage box cover closing valve to be powered on. The upper-mounted data processing module controls the garbage box cover to close the garbage box, so that the garbage box cover in place sensor generates an in place signal. The upper-mounted data processing module controls the garbage can lifting mechanism to rise to a high position, so that the garbage can lifting mechanism high position sensor generates a high position signal.

[0009] Further, the upper-mounted data processing module is connected with a garbage can lifting mechanism high position indicator and a garbage box cover plate in place indicator. After receiving the in place signal generated by the garbage box cover plate in place sensor, the upper-mounted data processing module lights up the garbage box cover plate in place indicator. After receiving the high position signal generated by the garbage can lifting mechanism high position sensor, the upper-mounted data processing module lights up the garbage can lifting mechanism high position indicator.

[0010] Further, an accelerator limiting mechanism is arranged below the accelerator pedal of the compression type garbage truck. When the power takeoff device is working, the accelerator limiting mechanism limits the stroke of the accelerator pedal. When the accelerator pedal is stepped to the limit position of the accelerator limiting mechanism, the engine speed is greater than the preset threshold.

[0011] Further, the accelerator limiting mechanism includes a drive cylinder. When the drive cylinder is fully extended, there is a gap between the drive cylinder and the high position of the accelerator pedal.

[0012] Further, the compression type garbage truck is provided with a power takeoff device opening switch. The power takeoff device opening switch and the accelerator limiting mechanism are connected through a corresponding communication device. The communication device is used to send the state of the power takeoff device opening switch to the accelerator limiting mechanism.

[0013] Further, the communication device includes an RFID tag and an RFID reader. When the power takeoff device opening switch is opened, the RFID reader can read the RFID tag. When the power takeoff device opening switch is closed, the RFID reader cannot read the RFID tag.

[0014] Further, the throttle limiting mechanism comprises a control system connected with the driving cylinder and the RFID reader, the control system controls the driving cylinder to fully extend when the RFID reader reads the RFID tag, and controls the driving cylinder to fully retract when the RFID reader fails to read the RFID tag.

[0015] Further, the power take-off opening switch comprises a pressing body and a shell, the RFID tag comprises a separated RFID antenna and RFID chip, the RFID antenna is arranged on the pressing body, the RFID chip is arranged on the shell, the RFID antenna is driven to sink after the pressing body is pressed, so that the RFID antenna and the RFID chip are electrically connected to form the RFID tag, and the RFID antenna is driven to float after the pressing body is released, so that the RFID antenna and the RFID chip are disconnected.

[0016] Further, an automatic control method of the compression type garbage truck is provided, which is based on any one of the automatic control systems of the compression type garbage truck and comprises the following steps.

[0017] S1, when the power take-off is working, if the engine speed is greater than a preset threshold, the garbage can lifting mechanism rising valve and the garbage box cover plate closing valve are controlled to be powered on;

[0018] S2, the garbage box cover plate is controlled to close the garbage box, so that the garbage box cover plate in-place sensor generates an in-place signal;

[0019] S3, the garbage can lifting mechanism is controlled to rise to a high position, so that the garbage can lifting mechanism high position sensor generates a high position signal.

[0020] Therefore, the present application provides the following effects and / or advantages:

[0021] According to the engine speed, the garbage can lifting mechanism can be automatically lifted to a high position and the garbage box cover plate can be closed when the engine speed exceeds a preset threshold, so that the safety hazard of the compression type garbage truck during driving can be prevented, and the power obtained by the power take-off from the engine is prevented from being too large to damage the device.

[0022] The travel of the throttle pedal is limited by the throttle limiting mechanism, so that the engine speed rising caused by the throttle can be limited, and the engine speed rising can be correctly identified as exceeding the preset threshold and will not exceed the range that can be borne by other devices.

[0023] The application designs a communication device, so that when the power take-off opening switch is opened, the RFID tag can work correctly, and corresponding data can be obtained in cooperation with the RFID reader, when the power take-off opening switch is closed, the RFID antenna and the RFID chip are separated and thus cannot work, but without setting an additional wired communication cable, it is determined that the power take-off opening switch is opened.

[0024] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application. The objects and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims.

[0025] It should be understood that the foregoing summary of the application and the following detailed description are exemplary and explanatory, and are intended to provide further explanation of the application as claimed. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic diagram of the working process of the application.

[0027] Figure 2 It is a schematic diagram of the connection of the upper data processing module of the application.

[0028] Figure 3 It is a schematic diagram of the structure of the throttle limiting mechanism of the application.

[0029] Figure 4 It is a front view of Figure 3

[0030] Figure 5 It is a schematic diagram of the structure of the power take-off opening switch and the RFID tag of the application.

[0031] Figure 6 It is a schematic diagram of the prior art problem introduced in the background. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of those skilled in the art, the structure of the application will be further described in detail in combination with the drawings:

[0033] Referring to Figures 1-5 A compressed garbage truck automatic control system, the compressed garbage truck includes a power take-off, a garbage box cover plate, a garbage can lifting mechanism, the power take-off obtains power from the engine of the compressed garbage truck when working to drive the garbage box cover plate and the garbage can lifting mechanism, the garbage can lifting mechanism is used to lift and overturn the garbage can when the compressed garbage truck is loaded, and the garbage box cover plate is used to close the garbage box when the compressed garbage truck is loaded.

[0034] ​In this embodiment, the compression type garbage truck belongs to the prior art. When loading garbage, the opening of the garbage tank of the compression type garbage truck can be exposed when the garbage tank cover plate is opened, so that garbage can enter. The garbage can lifting mechanism is used to lift and overturn the garbage can, so as to pour the garbage in the garbage can into the opening of the garbage tank. When loading garbage, the garbage tank cover plate and the garbage can lifting mechanism are driven by the corresponding oil circuit and oil cylinder, the power take-off device works, the power take-off device obtains power from the engine and drives the hydraulic pump, and the hydraulic pump drives the corresponding oil cylinder to work, so that the garbage tank cover plate and the garbage can lifting mechanism complete the corresponding work.

[0035] The upper-mounted data processing module is connected with a chassis, a garbage can lifting mechanism rising valve, a garbage tank cover plate closing valve, a garbage can lifting mechanism high position sensor and a garbage tank cover plate in-place sensor. The upper-mounted data processing module obtains the corresponding engine speed through the chassis. When the engine speed is greater than a preset threshold, the upper-mounted data processing module controls the garbage can lifting mechanism rising valve and the garbage tank cover plate closing valve to be powered on. The upper-mounted data processing module controls the garbage tank cover plate to close the garbage tank, so that the garbage tank cover plate in-place sensor generates an in-place signal. The upper-mounted data processing module controls the garbage can lifting mechanism to rise to a high position, so that the garbage can lifting mechanism high position sensor generates a high position signal.

[0036] In this embodiment, the garbage can lifting mechanism high position sensor and the garbage tank cover plate in-place sensor can be distance sensors. When the garbage can lifting mechanism runs to a high position or the garbage tank cover plate is completely closed, the corresponding sensor senses a signal, so that it can be judged to be in place. The garbage can lifting mechanism rising valve and the garbage tank cover plate closing valve can be electromagnetic valves for controlling the conduction of the corresponding oil circuit. When the electromagnetic valve is powered on, the corresponding oil circuit of the garbage can lifting mechanism or the garbage tank cover plate is conducted. Under the action of the hydraulic pump, the oil circuit drives the garbage can lifting mechanism to rise and the garbage tank cover plate to close.

[0037] The hydraulic pump drives the garbage can lifting mechanism to rise and the garbage tank cover plate to close through the corresponding oil circuit. Since the hydraulic pump takes power through the power take-off device, if the operator drives the compression type garbage truck to walk at this time, the engine speed will rise sharply, and the oil pressure output by the hydraulic pump will also rise sharply. At this time, the oil pressure that is too high will damage the oil circuit, the garbage can lifting mechanism and the garbage tank cover plate. Therefore, in this embodiment, the engine speed is obtained in real time by the upper-mounted data processing module. If the engine speed is greater than a preset threshold, the vehicle starts to walk at this time, the engine speed is greater than the preset threshold, and the vehicle is in the low-speed starting stage. The engine speed at this time is not high enough to damage the device. At this time, the garbage can lifting mechanism rising valve and the garbage tank cover plate closing valve are powered on, the corresponding oil circuit of the garbage can lifting mechanism and the garbage tank cover plate is opened, so that the hydraulic pump is driven by the power take-off device to drive the garbage can lifting mechanism and the garbage tank cover plate to complete the corresponding action.

[0038] Further, the upper-mounted data processing module is connected with a garbage can lifting mechanism high position indicator light and a garbage box cover plate in place indicator light, the upper-mounted data processing module lights up the garbage box cover plate in place indicator light after receiving the in place signal generated by the garbage box cover plate in place sensor, and the upper-mounted data processing module lights up the garbage can lifting mechanism high position indicator light after receiving the high position signal generated by the garbage can lifting mechanism high position sensor.

[0039] The embodiment can also be provided with a power take-off opening indicator light for feeding back the opening of the power take-off to the operator.

[0040] Further, the oil pedal limiting mechanism 1 is arranged below the oil pedal of the compression garbage truck, and the oil pedal limiting mechanism limits the stroke of the oil pedal when the power take-off is working. When the oil pedal is stepped to the limit position of the oil pedal limiting mechanism, the engine speed is greater than the preset threshold.

[0041] Further, the oil pedal limiting mechanism 1 comprises a driving cylinder, and when the driving cylinder is fully extended, the driving cylinder has a spacing with the high position of the oil pedal.

[0042] In the embodiment, when the power take-off is working, the oil pedal limiting mechanism 1 is lifted to limit the stroke of the oil pedal. Since the driving cylinder has a spacing with the high position of the oil pedal when the driving cylinder is fully extended, the oil pedal can still be stepped for a certain stroke. Within the stroke, the compression garbage truck travels slowly, and the engine speed does not damage other devices. When the driver steps on the oil pedal, he will immediately realize that the power take-off is not disconnected, and the garbage can lifting mechanism and the garbage box cover plate may not be in the correct position.

[0043] In the embodiment, the preset threshold can be set to 1500 r / min, and the engine speed when the oil pedal is stepped to the limit position of the oil pedal limiting mechanism can be set to 1.2 times the preset threshold. Therefore, when the oil pedal is stepped to the limit position of the oil pedal limiting mechanism, the engine speed can be increased and the increase of the engine speed is limited, so that it can be correctly identified that the preset threshold is exceeded, and it will not exceed the range that other devices can withstand.

[0044] Further, the compression garbage truck is provided with a power take-off opening switch, and the power take-off opening switch and the oil pedal limiting mechanism are connected through corresponding communication devices. The communication device is used to send the state of the power take-off opening switch to the oil pedal limiting mechanism.

[0045] Further, the communication device comprises an RFID tag 202 and an RFID reader 201, the RFID tag 202 is configured to be read by the RFID reader 201 when the power take-off switch is on, and not to be read by the RFID reader 201 when the power take-off switch is off.

[0046] Further, the throttle limiting mechanism comprises a control system, the control system is connected to the driving cylinder and the RFID reader 201, the control system controls the driving cylinder to fully extend when the RFID reader 201 reads the RFID tag 202, and controls the driving cylinder to fully retract when the RFID reader 201 cannot read the RFID tag 202.

[0047] Further, the power take-off switch comprises a pressing body and a shell, the RFID tag 202 comprises a separate RFID antenna 2021 and an RFID chip 2022, the RFID antenna 2021 is arranged on the pressing body, and the RFID chip 2022 is arranged on the shell, after the pressing body is pressed, the pressing body drives the RFID antenna 2021 to sink, so that the RFID antenna 2021 and the RFID chip 2022 are electrically connected to form the RFID tag 202, and after the pressing body is released, the pressing body drives the RFID antenna 2021 to float, so that the RFID antenna 2021 and the RFID chip 2022 are disconnected.

[0048] In this embodiment, the RFID tag 202 is a prior art. One of the cores of this embodiment is to separate the RFID antenna 2021 and the RFID chip 2022 of the RFID tag 202. When the two are separated, the RFID antenna 2021 or the RFID chip 2022 cannot be coupled with the electromagnetic wave emitted by the RFID reader 201, so as to be unable to work. At this time, the reader 201 cannot read the data of the RFID tag 202. When the pressure body is pressed, the pressure body drives the RFID antenna 2021 to sink, at this time, the RFID antenna 2021 is in electrical contact with the RFID chip 2022, and the two form a complete RFID tag 202. The RFID antenna 2021 receives the electromagnetic wave emitted by the RFID reader 201, so as to drive the RFID chip 2022 to work. When the RFID chip 2022 works, it will store the signal in its internal storage and emit it outward through the RFID antenna 2021, which is captured by the RFID reader 201. This embodiment splits the RFID tag 202 and combines it with the specific position of the power take-off opening switch, so as to judge that the power take-off opening switch is in the open state according to the RFID tag 202 can be read by the RFID reader 201. For some old compression type garbage trucks, communication can be carried out through the communication device provided in this embodiment, and the oil throttle limiting mechanism 1 can obtain the working state of the power take-off.

[0049] Further provided is an automatic control method of a compression type garbage truck, based on the automatic control system of the compression type garbage truck, comprising the following steps:

[0050] S1, when the power take-off works, if the engine speed is greater than a preset threshold, the garbage can lifting mechanism rising valve and the garbage box cover plate closing valve are powered on;

[0051] S2, control the garbage box cover plate closing valve to make the garbage box cover plate in place sensor generate an in place signal;

[0052] S3, control the garbage can lifting mechanism to rise to the high position to make the garbage can lifting mechanism high position sensor generate a high position signal.

[0053] The automatic control method is basically the same as the working principle of the automatic control system described above, and will not be described here.

[0054] It is to be noted that in the claims the verb "comprise" and its conjugations do not exclude other elements or steps than those recited therein. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. It is further to be noted that elements or steps can be presented in a certain order. However, this order is merely for practical representing and it can have a different order. The application can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several devices, several of these devices can be embodied by one and the same item of hardware. The usage of the words "first", "second", and the like does not have any semantic meaning but they are used to distinguish between the elements enumerated. The wording "their sequence" does not have any semantic meaning but it is used to distinguish between the elements enumerated.

[0055] Although the preferred embodiments of the application have been described, those skilled in the art will understand that they can be subjected to many changes and modifications without departing from the scope of the application. Accordingly, it is intended to embrace all such alterations and modifications insofar as they come within the scope of the application.

[0056] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be interpreted in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

Claims

1. An automatic control system for a compression garbage truck, comprising a power take-off (PTO), a garbage bin cover, and a garbage bin lifting mechanism. The PTO draws power from the truck's engine to drive the garbage bin cover and the garbage bin lifting mechanism. The garbage bin lifting mechanism is used to lift and flip the garbage bin when the truck is loaded. The garbage bin cover is used to close the garbage bin when loading is complete. Its characteristics are: It includes an upper-mounted data processing module, which is connected to the chassis, the rising valve of the trash can lifting mechanism, the closing valve of the trash can cover, the high-position sensor of the trash can lifting mechanism, and the trash can cover in-place sensor. The upper-mounted data processing module obtains the corresponding engine speed through the chassis. When the engine speed is greater than the preset threshold, the upper-mounted data processing module controls the rising valve of the trash can lifting mechanism and the closing valve of the trash can cover to power on. The upper-mounted data processing module controls the trash can cover to close the trash can so that the trash can cover in-place sensor generates an in-place signal. The upper-mounted data processing module controls the trash can lifting mechanism to rise to a high position so that the high-position sensor of the trash can lifting mechanism generates a high-position signal.

2. The automatic control system for a compression garbage truck according to claim 1, characterized in that: The upper data processing module is connected to the trash can lifting mechanism high-position indicator light and the trash can cover in place indicator light. The upper data processing module lights up the trash can cover in place indicator light after receiving the in place signal generated by the trash can cover in place sensor. The upper data processing module lights up the trash can lifting mechanism high-position indicator light after receiving the high-position signal generated by the trash can lifting mechanism high-position sensor.

3. The automatic control system for a compression garbage truck according to claim 1, characterized in that: It includes a throttle limiting mechanism, which is arranged below the throttle pedal of the compression garbage truck. When the power take-off is working, the throttle limiting mechanism limits the stroke of the throttle pedal. When the throttle pedal is stepped on to the limit position of the throttle limiting mechanism, the engine speed is greater than the preset threshold.

4. The automatic control system for a compression garbage truck according to claim 3, characterized in that: The throttle limiting mechanism includes a driving cylinder. When the driving cylinder is fully extended, there is a distance between the driving cylinder and the high position of the accelerator pedal.

5. The automatic control system for a compression garbage truck according to claim 4, characterized in that: The compression garbage truck is provided with a power take-off on-switch, and the power take-off on-switch is connected to the throttle limiting mechanism via a corresponding communication device, and the communication device is used to send the status of the power take-off on-switch to the throttle limiting mechanism.

6. The automatic control system for a compression garbage truck according to claim 5, characterized in that: The communication device includes an RFID tag and an RFID reader. The RFID tag is configured so that the RFID reader can read the RFID tag when the power take-off switch is turned on, and cannot read the RFID tag when the power take-off switch is turned off.

7. The automatic control system for a compression garbage truck according to claim 6, characterized in that: The throttle limiting mechanism includes a control system, which is connected to the drive cylinder and the RFID reader. The control system controls the drive cylinder to fully extend when the RFID reader reads the RFID tag, and controls the drive cylinder to fully retract when the RFID reader cannot read the RFID tag.

8. The automatic control system for a compression garbage truck according to claim 6, characterized in that: The power take-off start switch includes a pressure body and a shell, and the RFID tag includes a separate RFID antenna and an RFID chip. The RFID antenna is arranged on the pressure body, and the RFID chip is arranged on the shell. When the pressure body is pressed, the pressure body drives the RFID antenna to sink, so that the RFID antenna and the RFID chip are electrically connected to form the RFID tag. After the pressure body is released, the pressure body drives the RFID antenna to float, so that the RFID antenna and the RFID chip are disconnected.

9. An automatic control method for a compression garbage truck, characterized in that: An automatic control system for a compression garbage truck according to any one of claims 1 to 8 comprises the following steps: S1, when the power take-off is working, if the engine speed is greater than a preset threshold, the lifting valve of the trash can lifting mechanism and the closing valve of the trash can cover are controlled to be energized; S2, controlling the trash bin cover to close the trash bin so that the trash bin cover in position sensor generates an in position signal; S3, controlling the trash can lifting mechanism to rise to a high position so that a high position sensor of the trash can lifting mechanism generates a high position signal.

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