Paver and control method

Abstract

The invention provides a paver and a control method, and belongs to the technical field of pavers, a driving system of the paver comprises a multi-output driving motor, a walking pump, an oil cylinder pump, a material distributing pump, a vibrating pump and a material conveying pump; the multi-output driving motor at least comprises a first output port, a second output port and a third output port; when the paver is in a transition mode, the multi-output driving motor drives the walking pump and the oil cylinder pump to operate through the first output port, and the second output port and the third output port do not operate; when the paver is in a working mode, the multi-output driving motor drives the walking pump and the oil cylinder pump to operate through the first output port, drives the material distributing pump and the vibrating pump to operate through the second output port, and drives the material conveying pump to operate through the third output port. The hydraulic pump is driven by the multi-output driving motor, the structure is simple, the number of pipelines is small, the transmission efficiency is high, and energy consumption can be reduced.

Description

Technical Field

[0001] The invention relates to a paver and a control method, belonging to the technical field of pavers. Background Art

[0002] Existing pavers are mainly used for road stabilized soil and asphalt concrete paving construction. They are mainly composed of a diesel engine power system, a traveling hydraulic drive system, a material feeding hydraulic drive system, a material distribution hydraulic drive system, a vibrating drive system, an ironing plate, etc. The diesel engine drives the transfer case, and the transfer case drives each hydraulic pump to realize the conversion of chemical energy into hydraulic energy. The hydraulic energy drives the hydraulic motor or hydraulic cylinder to convert the hydraulic energy into mechanical energy. The ironing plate is heated mainly by a generator and connected to a heating rod to heat the ironing plate.

[0003] The existing paver drive system mainly has the following problems:

[0004] 1. With the increasingly serious environmental pollution and the implementation of emission standards, diesel engine power systems are difficult to meet environmental protection requirements;

[0005] 2. The diesel engine power system is not only expensive to use, but also noisy and has poor operator comfort;

[0006] 3. The partitioned hydraulic drive system has the problems of complex structure, large space, many pipelines, low transmission efficiency and high cost. Summary of the invention

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a paver and a control method, which solve the problems of the prior art such as complex structure of the hydraulic drive system, multiple pipelines and low transmission efficiency.

[0008] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0009] In the first aspect, the present invention provides a paving machine, including a driving system, the driving system including: a multi-output driving motor, a travel pump, a cylinder pump, a material distribution pump, a vibrating pump and a feed pump; the multi-output driving motor includes at least a first output port, a second output port and a third output port; when the paving machine is in a transfer mode, the multi-output driving motor drives the travel pump and the cylinder pump to operate through the first output port, and the second output port and the third output port do not operate; when the paving machine is in a working mode, the multi-output driving motor drives the travel pump and the cylinder pump to operate through the first output port, drives the material distribution pump and the vibrating pump to operate through the second output port, and drives the feed pump to operate through the third output port.

[0010] Furthermore, the paver also includes:

[0011] Control module: used for controlling the mode of the paver by issuing a mode instruction;

[0012] Power module: used to supply power to the drive system;

[0013] Power distribution module: used to connect, disconnect and switch between the power module and the drive system according to the mode instructions of the control module, thereby controlling the operation of each output port of the multi-output drive motor.

[0014] Furthermore, the power distribution module includes: a high-voltage distribution box and an all-in-one driver; the high-voltage distribution box is connected to the power module through a first switch; the high-voltage distribution box is connected to the multi-output drive motor through the all-in-one driver; the all-in-one driver includes: multiple high-voltage AC output terminals, and the high-voltage AC output terminals are connected one-to-one with the output ports of the multi-output drive motor.

[0015] Furthermore, the paver also includes: a charging module; the charging module includes: a DC charging port and / or an AC charging port; the DC charging port is connected to the power module via a second switch; the AC charging port is connected to the high-voltage distribution box via an on-board charger.

[0016] Furthermore, the control module includes: a BMS control box and a vehicle VCU; the vehicle VCU and the BMS control box are connected and communicated via a CAN bus; the BMS control box controls all relays, the first switch, the second switch, the working parameters of the on-board charger in the power distribution module, and the start and end of charging of the on-board charger; the vehicle VCU controls the operation of the all-in-one driver and the multi-output drive motor.

[0017] Furthermore, the paver further comprises: a low voltage electrical system; the power distribution module further comprises: a DC-DC converter;

[0018] The low-voltage electrical system is connected to the high-voltage distribution box through the DC-DC converter; the low-voltage electrical system includes: a battery; the battery supplies power to the BMS control box and the vehicle VCU.

[0019] Furthermore, the paving machine also includes: a screed plate heating system; the power module is provided with a separate power output terminal to supply power to the screed plate heating system.

[0020] Furthermore, the power module is a power battery pack.

[0021] In a second aspect, the present invention provides a control method for a paver, comprising: the paver comprises: a drive system, the drive system comprises: a multi-output drive motor, a travel pump, a cylinder pump, a material distribution pump, a vibrating pump and a feed pump; the multi-output drive motor comprises at least a first output port, a second output port and a third output port.

[0022] The method is executed by the vehicle VCU of the paver, and includes: in response to the paver being in a transfer mode, controlling the multi-output drive motor to drive the travel pump and the cylinder pump through the first output port, and controlling the second output port and the third output port of the multi-output drive motor not to operate; in response to the paver being in a working mode, controlling the multi-output drive motor to drive the travel pump and the cylinder pump through the first output port, drive the distribution pump and the vibrating pump through the second output port, and drive the feed pump through the third output port.

[0023] Furthermore, the paver also includes: a charging module, a power distribution module and a power supply module; the power distribution module includes: a high-voltage distribution box and an all-in-one driver; the charging module includes: a DC charging port and / or an AC charging port; the DC charging port is connected to the power supply module through a second switch; the AC charging port is connected to the high-voltage distribution box through an on-board charger.

[0024] The method also includes: in response to the AC charging port being inserted into the charging gun, controlling the relay between the all-in-one driver and the multi-output drive motor to be disconnected, and keeping the DC charging port disconnected, and then connecting the AC charging port to switch the battery module state to a slow charging state; in response to the DC charging port being inserted into the charging gun, controlling the relay between the all-in-one driver and the multi-output drive motor to be disconnected, and keeping the AC charging port disconnected, and then connecting the DC charging port to switch the battery module state to a fast charging state.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] (1) The paver provided by the present invention adopts a multi-output drive motor to drive the hydraulic pump, which has a simple structure, saves space, has fewer pipelines, has high transmission efficiency, is low in cost, saves energy and reduces noise. In addition, the travel pump and the cylinder pump of the paver are connected to the same output port of the multi-output drive motor, so that when the paver is in the transition gear, only one output port is running, and the other output ports are not running, which can effectively reduce energy consumption;

[0027] (2) The paver provided by the present invention uses a power battery pack as a power source to drive the motor to operate, which has low noise. While ensuring high operating efficiency, it reduces the cost of use, improves economic benefits, and achieves zero exhaust gas emissions, which is green and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1This is a schematic diagram of the paver system provided in Example 1 of the present invention. DETAILED DESCRIPTION

[0029] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0030] A paver is a type of construction equipment mainly used for paving various materials on the base and surface layers of highways. The paving work is completed by the cooperation of various systems, mainly including a traveling system, a driving system, and a material distribution system.

[0031] Example 1

[0032] This embodiment provides a paving machine, such as Figure 1 As shown, the driving system of the paver includes: a multi-output driving motor, a travel pump, a cylinder pump, a material distribution pump, a vibrating pump and a feed pump.

[0033] Specifically, the multi-output drive motor includes at least a first output port, a second output port and a third output port; wherein the first output port is used to drive the left and right travel pumps and the cylinder pump, the second output port is used to drive the left and right material distribution pumps and the vibration pump, and the third output port is used to drive the left and right material delivery pumps.

[0034] The paver can adjust the operating state of each output port of the multi-output drive motor according to different gears or working modes of the paver. In particular, the travel pump and the cylinder pump of the paver are driven by the same output port of the multi-output drive motor, so that when the paver is in the transition gear, only one output port needs to be maintained in operation, effectively reducing energy consumption.

[0035] Specifically, when the paver is in the transfer mode, the multi-output drive motor only drives the travel pump and the cylinder pump to operate through the first output port, and the other output ports do not operate; when the paver is in the working mode, all three output ports of the multi-output drive motor operate, and simultaneously drive the travel pump, the cylinder pump, the material distribution pump, the vibrating pump and the feed pump to operate.

[0036] The present invention uses a multi-output drive motor to replace the traditional multiple motor partition drive, which not only simplifies the structure of the drive system and greatly reduces the cost, but also greatly reduces the pipeline layout and saves space.

[0037] In a specific embodiment, the paver further includes: a control module for controlling the working mode of the paver, a power module for supplying power to the drive system, and a power distribution module for connecting, disconnecting and switching between the power module and the drive system.

[0038] The control module controls the working mode of the paver according to the driver's operating instructions, and the power distribution module needs to set the connection, disconnection and conversion between the power module and the drive system according to the mode instructions of the control module to realize the operation of each output port of the multi-output drive motor.

[0039] In a specific embodiment, the power distribution module includes: a high-voltage distribution box and an all-in-one driver; wherein, the input end of the high-voltage distribution box is connected to the power module through a first switch, and is used to configure the output of the power module; the output end of the high-voltage distribution box is connected to the input end of the all-in-one driver, and the all-in-one driver has multiple high-voltage AC output ends, which are respectively connected to each output port of the multi-output drive motor, and are used to supply power to each output port of the multi-output drive motor.

[0040] In a specific embodiment, the control module includes: a BMS control box and a vehicle VCU, both of which have clear division of labor and can communicate with each other.

[0041] Specifically, the BMS control box controls the on and off of all relays, the first switch and the second switch in the power distribution module, while the vehicle VCU controls the operation of the all-in-one driver and the multi-output drive motor.

[0042] In a specific embodiment, the vehicle VCU and the BMS control box are connected and communicated via a CAN bus.

[0043] As an improved embodiment, the paver also includes: a low-voltage electrical system; in these embodiments, the power distribution module needs to be configured with a DC-DC converter; the low-voltage electrical system is connected to the high-voltage distribution box through a DC-DC converter, and the battery in the low-voltage electrical system supplies power to the BMS control box and the vehicle VCU.

[0044] As an improved embodiment, the paving machine further includes: a screed plate heating system; in these embodiments, the power module is configured with a separate power output terminal to supply power to the screed plate heating system.

[0045] As an improved embodiment, the power module adopts a power battery pack.

[0046] Example 2

[0047] Based on Example 1, this embodiment provides a paver including a charging module.

[0048] The charging module of the paver includes: one or both of a DC charging port and an AC charging port.

[0049] In some embodiments of configuring a DC charging port, the DC charging port is connected to the power module via a second switch for fast charging the battery module. When the DC charging port is not charging, the second switch remains open, and before the DC charging port is charged, the second switch is controlled to close.

[0050] In some embodiments with an AC charging port, the AC charging port is connected to a high-voltage power distribution box through an on-board charger for slow charging of the battery module. During the charging process, the operating parameter adjustment of the on-board charger and the start / end of charging are controlled by the BMS control box.

[0051] As is known, a vehicle charger is a device that converts AC power into DC power, and is used to convert the input AC voltage into the DC voltage required by the battery. The vehicle charger can dynamically adjust the charging current or voltage parameters based on the data provided by the battery module, perform corresponding actions, and complete the charging process.

[0052] It should be noted that when charging at the DC charging port or AC charging port, the multi-output drive motor is prohibited from working. Therefore, when the paver is in charging mode, it is necessary to control the relay between the all-in-one driver and the multi-output drive motor to be disconnected.

[0053] It should be noted that in some embodiments where both a DC charging port and an AC charging port are configured, the DC charging port and the AC charging port cannot be charged at the same time. Therefore, when charging at the DC charging port, the second switch needs to be kept closed while the connection between the vehicle charger and the high-voltage distribution box needs to be disconnected. When charging at the AC charging port, the second switch needs to be kept open.

[0054] Example 3

[0055] This embodiment provides a control method for controlling the paver as described in Embodiment 1.

[0056] The control method is executed by the vehicle VCU of the paver, including: in response to the paver being in the transfer mode, controlling the multi-output drive motor to drive the travel pump and the cylinder pump through the first output port, and controlling the second output port and the third output port of the multi-output drive motor not to operate; in response to the paver being in the working mode, controlling the multi-output drive motor to drive the travel pump and the cylinder pump through the first output port, drive the distribution pump and the vibration pump through the second output port, and drive the feed pump through the third output port.

[0057] Specifically, the paver does not perform paving operations in the transfer mode. When the operator chooses to enter the transfer mode on the operating interface in the cab, the control module will detect the corresponding signal, and then the control module will send a corresponding control signal to the control switch of the multi-output drive motor, so that the first output port of the multi-output drive motor is energized to drive the left and right travel pumps and cylinder pump to work, while the second output port and the third output port are powered off and enter a non-operating state.

[0058] The paver performs paving operations in the working mode. When the paver completes the transfer and enters the working position to prepare to start the paving operation, the operator chooses to enter the working mode on the operating interface of the cab, and the control module detects the corresponding signal. Then the control module sends the corresponding control signal to the control switch of the multi-output drive motor, so that the first output port, the second output port and the third output port of the multi-output drive motor are all energized, and the left and right travel pumps, cylinder pumps, left and right material distribution pumps, vibrating pumps and left and right feed pumps all enter the working state.

[0059] The multi-output drive motor replaces the traditional multiple motor partition drive to simplify the drive system of the paver and also simplifies the control method of the paver. The control module only needs to control the control switch of the multi-output drive motor to complete the hydraulic system control under different working modes, thereby improving the working efficiency of the paver and effectively reducing energy consumption.

[0060] Example 4

[0061] This embodiment provides a control method for controlling the paver as described in Example 2.

[0062] In addition to the steps described in Example 3, in some embodiments configured with an AC charging port, the control method also includes: in response to the AC charging port being inserted into a charging gun, controlling the relay between the all-in-one driver and the multi-output drive motor to disconnect, and keeping the DC charging port disconnected, and then connecting the AC charging port to switch the battery module state to a slow charging state.

[0063] In some embodiments of configuring a DC charging port, the control method also includes: in response to inserting a charging gun into the DC charging port, controlling the relay between the all-in-one driver and the multi-output drive motor to disconnect, and keeping the AC charging port disconnected, and then connecting the DC charging port to switch the battery module state to a fast charging state.

[0064] Regardless of whether the embodiment is configured with an AC charging port or a DC charging port, when the charging port is inserted into the charging gun, the control module first detects the status of the multi-output drive motor after receiving the corresponding feedback signal. The charging port is allowed to charge only when the first output port, the second output port and the third output port of the multi-output drive motor are all powered off.

[0065] In some embodiments where both a DC charging port and an AC charging port are configured, when the state of the multi-output drive motor allows, the control module also only allows one charging method to charge the power module. That is to say, if the AC charging port is inserted into the charging gun, before charging starts, the control module also needs to detect whether the second switch connecting the DC charging port and the power module is disconnected. Only when the second switch is disconnected, the controller will control the connection between the AC charging port and the vehicle-mounted charger, and then slowly charge the power module through the AC charging port. If the DC charging port is inserted into the charging gun, before charging starts, the control module also needs to detect whether the connection between the AC charging port and the vehicle-mounted charger is disconnected. Only when the AC charging port and the vehicle-mounted charger are disconnected, the control module will control the second switch to close, and then quickly charge the power module through the DC charging port.

[0066] This control method realizes the charging safety of "no charging in working state, no working in charging state", and also eliminates the possibility of charging in multiple charging modes at the same time, ensuring the safe use of the battery module and helping to extend the service life of the power module.

[0067] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A paver, comprising a drive system, characterized in that: The driving system comprises: a multi-output driving motor, a travel pump, a cylinder pump, a material distribution pump, a vibrating pump and a material delivery pump; The multi-output drive motor comprises at least a first output port, a second output port and a third output port; When the paver is in the transfer mode, the multi-output drive motor drives the travel pump and the cylinder pump to operate through the first output port, and the second output port and the third output port are not in operation; When the paver is in working mode, the multi-output drive motor drives the travel pump and the cylinder pump to operate through the first output port, drives the distribution pump and the vibrating pump to operate through the second output port, and drives the feed pump to operate through the third output port.

2. The paving machine according to claim 1, characterized in that: Also includes: Control module: used for controlling the mode of the paver by issuing a mode instruction; Power module: used to supply power to the drive system; Power distribution module: used to connect, disconnect and switch between the power module and the drive system according to the mode instructions of the control module, thereby controlling the operation of each output port of the multi-output drive motor.

3. The paving machine according to claim 2, characterized in that: The power distribution module includes: a high voltage distribution box and an all-in-one driver; The high-voltage distribution box is connected to the power module via a first switch; The high-voltage distribution box is connected to the multi-output drive motor through the all-in-one driver; The all-in-one driver comprises: a plurality of high-voltage AC output terminals, and the high-voltage AC output terminals are connected to the output ports of the multi-output drive motors in a one-to-one correspondence.

4. The paving machine according to claim 3, characterized in that: Also includes: Charging module; The charging module includes: a DC charging port and / or an AC charging port; The DC charging port is connected to the power module via a second switch; The AC charging port is connected to the high-voltage distribution box through an on-board charger.

5. The paving machine according to claim 4, characterized in that: The control module includes: a BMS control box and a vehicle VCU; the vehicle VCU and the BMS control box are connected and communicated via a CAN bus; The BMS control box controls all relays, the first switch, the second switch, the working parameters of the on-board charger in the power distribution module, and the start and end of charging of the on-board charger; The vehicle VCU controls the operation of the all-in-one driver and the multi-output drive motor.

6. The paving machine according to claim 5, characterized in that: Also includes: Low voltage electrical systems; The power distribution module also includes: a DC-DC converter; The low voltage electrical system is connected to the high voltage distribution box via the DC-DC converter; The low-voltage electrical system includes: a battery; the battery supplies power to the BMS control box and the vehicle VCU.

7. The paving machine according to claim 2, characterized in that: Also includes: Ironing plate heating system; the power module is provided with a separate power output terminal to supply power to the ironing plate heating system.

8. The paving machine according to claim 2, characterized in that: The power module is a power battery pack.

9. A control method for a paver, characterized in that: The paver comprises: a driving system, which comprises: a multi-output driving motor, a travel pump, a cylinder pump, a material distribution pump, a vibrating pump and a feed pump; The multi-output drive motor comprises at least a first output port, a second output port and a third output port; The method is performed by a whole-vehicle VCU of a paving machine, and includes: In response to the paving machine being in the transfer mode, controlling the multi-output drive motor to drive the travel pump and the cylinder pump through the first output port, and controlling the second output port and the third output port of the multi-output drive motor not to operate; In response to the paving machine being in working mode, the multi-output drive motor is controlled to drive the travel pump and the cylinder pump through the first output port, drive the distribution pump and the vibration pump through the second output port, and drive the feed pump through the third output port.

10. The control method according to claim 9, characterized in that: The paver further comprises: a charging module, a power distribution module and a power supply module; The power distribution module includes: a high voltage distribution box and an all-in-one driver; The charging module includes: a DC charging port and / or an AC charging port; The DC charging port is connected to the power module via a second switch; The AC charging port is connected to the high-voltage distribution box via an on-board charger; The method further comprises: In response to the AC charging port being plugged into a charging gun, controlling the relay between the all-in-one driver and the multi-output drive motor to be disconnected, and keeping the DC charging port disconnected, and then connecting the AC charging port to switch the battery module state to a slow charging state; In response to the DC charging port being inserted into a charging gun, the relay between the all-in-one driver and the multi-output drive motor is controlled to be disconnected, and the AC charging port is kept disconnected, and then the DC charging port is connected to switch the battery module state to a fast charging state.

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