CN110924467A - Timely four-wheel-drive traveling system and wheel type excavator - Google Patents
Timely four-wheel-drive traveling system and wheel type excavator Download PDFInfo
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- CN110924467A CN110924467A CN201911375020.6A CN201911375020A CN110924467A CN 110924467 A CN110924467 A CN 110924467A CN 201911375020 A CN201911375020 A CN 201911375020A CN 110924467 A CN110924467 A CN 110924467A
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- 238000012544 monitoring process Methods 0.000 claims description 35
- 238000013016 damping Methods 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 239000000446 fuel Substances 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 18
- 230000008859 change Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 239000002699 waste material Substances 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2062—Control of propulsion units
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/26—Indicating devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention relates to a timely four-wheel-drive traveling system and a wheel type excavator, and relates to the technical field of vehicle transmission systems. The technical problem that the wheel type excavator in the prior art is often driven by four wheels, so that poor fuel economy is easily caused is solved.
Description
Technical Field
The invention relates to the technical field of vehicle transmission systems, in particular to a timely four-wheel-drive traveling system and a wheel type excavator.
Background
When wet and slippery road surfaces, severe road surfaces or climbing road surfaces, larger ground holding force is needed, four-wheel drive is suitable for being adopted, but four wheels need more power for driving, the oil consumption is higher compared with two wheels, and the fuel economy is poor. When the road surface is stabilized, two wheels can be adopted for driving, the fuel economy is better, but the vehicle is easy to slip on certain muddy or wet road sections, and the vehicle is difficult to go out of puddle.
At present, wheel type excavators mostly adopt four-wheel drive, and the aim is to transmit power to each wheel so as to ensure that a vehicle keeps enough power. However, the wheel excavator is characterized in that the wheel excavator can be driven to carry out short-distance transfer, two drives can meet the working requirement on a smooth road surface, and under the working condition, the fuel efficiency is greatly different. In the prior art, a vehicle can be switched between four-wheel drive and two-wheel drive, but the operation is complicated, the optimal switching time cannot be mastered, and insufficient power or waste is easily caused.
Disclosure of Invention
The invention aims to provide a timely four-wheel drive traveling system and a wheel type excavator, so as to solve the technical problem that the wheel type excavator in the prior art is frequently driven by four wheels, and further fuel economy is poor easily.
In order to achieve the above object, in a first aspect, an embodiment provides a timely four-wheel drive traveling system, including a controller, a monitoring module, and a clutch;
the monitoring module is electrically connected with the controller and is used for monitoring road conditions;
the clutch can complete the switching between four-wheel drive and two-wheel drive according to road conditions.
In an alternative embodiment, the clutch comprises a hydraulic clutch.
In an optional implementation manner, the timely four-wheel-drive traveling system further comprises a pump body and a control valve, the pump body is communicated with the hydraulic clutch through the control valve, and the control valve is used for completing the connection and disconnection between the pump body and the hydraulic clutch.
In an optional embodiment, the control valve comprises an electromagnetic directional valve, and the electromagnetic directional valve is electrically connected with the controller and is used for automatically completing the connection and disconnection between the pump body and the hydraulic clutch.
In an optional embodiment, the electromagnetic directional valve comprises a two-position four-way valve, an a port of the two-position four-way valve is communicated with a P port of the hydraulic clutch, a B port of the two-position four-way valve is communicated with a T port of the hydraulic clutch, the P port of the two-position four-way valve is communicated with the pump body, and the T port of the two-position four-way valve is communicated with the oil tank.
In an optional implementation manner, the timely four-wheel drive traveling system further includes a pilot pipeline, the pump body includes a pilot pump, one end of the pilot pipeline is connected to the pilot pump, and the other end of the pilot pipeline is connected to the P port of the two-position four-way valve.
In an alternative embodiment, the monitoring module includes a first pressure sensor mounted to the main pump and configured to monitor an outlet pressure of the main pump.
In an optional implementation manner, the monitoring module further includes a second pressure sensor, the timely four-wheel-drive traveling system further includes a balance oil cylinder for damping, and the second pressure sensor is installed in the balance oil cylinder and is used for monitoring the oil pressure in the balance oil cylinder.
In an optional embodiment, the monitoring module further comprises an infrared sensor, and the infrared sensor is used for monitoring the road condition change.
In a second aspect, embodiments provide a wheeled excavator comprising a timely four-wheel drive locomotion system as described in any one of the preceding embodiments.
Compared with the prior art, the timely four-wheel drive walking system and the wheel type excavator provided by the invention have the beneficial effects that:
the invention provides a timely four-wheel-drive traveling system which comprises a controller, a monitoring module and a clutch, wherein the monitoring module can monitor the traveling road condition in real time in the traveling process of a wheel type excavator, the monitoring module is electrically connected with the controller, the controller can identify the road condition information of the monitoring module and compare the road condition information with the set requirement, once the road condition information falls into the set requirement range, the controller can immediately feed back the road condition information, and at the moment, the clutch is connected or disconnected to change the driving mode of the wheel type excavator.
Taking the wheel type excavator adopting the two-wheel drive driving as an example, the timely four-wheel drive traveling system is in a working state all the time in the traveling process, when the wheel type excavator travels from a stable road to a severe road, the controller identifies that the road condition information changes through the monitoring of the monitoring module, when the road condition information falls into a set requirement range, the clutch is engaged, and the wheel type excavator completes the four-wheel drive driving. In the process that the driving mode is changed, an operator does not need to change the driving mode according to experience, the driving mode is switched more timely, the situation of insufficient power or waste is basically avoided, and the fuel economy is better.
The technical effect of the wheel type excavator provided by the invention is the same as that of the timely four-wheel drive walking system, and the detailed description is omitted here.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a timely four-wheel drive walking system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a control method of the timely four-wheel drive walking system according to an embodiment of the present invention.
Icon: 10-a hydraulic clutch; 20-an electromagnetic directional valve; 30-a pilot pump; 40-a fuel tank; 50-pilot line.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
The timely four-wheel-drive traveling system provided by the embodiment comprises a controller, a monitoring module and a clutch, wherein in the traveling process of the wheel type excavator, the monitoring module can monitor the traveling road condition in real time, the monitoring module is electrically connected with the controller, the controller can identify the road condition information of the monitoring module and compare the road condition information with the set requirement, once the road condition information falls into the set requirement range, the controller can immediately feed back the road condition information, and the clutch is connected or disconnected at the moment so as to change the driving mode of the wheel type excavator.
Taking the wheel type excavator adopting the two-wheel drive driving as an example, the timely four-wheel drive traveling system is in a working state all the time in the traveling process, when the wheel type excavator travels from a stable road to a severe road, the controller identifies that the road condition information changes through the monitoring of the monitoring module, when the road condition information falls into a set requirement range, the clutch is engaged, and the wheel type excavator completes the four-wheel drive driving. In the process that the driving mode is changed, an operator does not need to change the driving mode according to experience, the driving mode is switched more timely, the situation of insufficient power or waste is basically avoided, and the fuel economy is better.
It should be noted that the timely four-wheel drive traveling system in the embodiment is not limited to be applied to a wheel excavator, and may be applied to other wheel type engineering machinery and household vehicles. In addition, the second drive in this embodiment refers to the rear wheel drive of the wheel excavator, the clutch is installed between the transmission case and the front transmission shaft, and when the clutch is engaged, the transmission case also drives the front transmission shaft to rotate, so as to complete the front wheel drive of the wheel excavator, and further realize the four-wheel drive mode.
Specifically, the embodiment further describes the specific structure of the timely four-wheel-drive traveling system in detail as follows.
In the present embodiment, the clutch includes a hydraulic clutch 10.
Specifically, by adopting the hydraulic clutch 10, the switching between the two-wheel drive and the four-wheel drive is more stable, and the frequent switching between the two-wheel drive and the four-wheel drive can be completed through frequent combination under the condition that the road conditions of the actual driving road section of the wheeled excavator are changeable, so that the actual use requirement of the wheeled excavator is met. Meanwhile, compared with a mechanical clutch, the hydraulic clutch 10 is adopted, so that the failure rate of a driving part of the wheel type excavator is lower, the structure is more compact, and the occupied space is smaller.
It should be noted that, the timely four-wheel drive traveling system in this embodiment is preferably applied to an engineering machine, taking application to a wheel excavator as an example, the four-wheel drive traveling system itself has a hydraulic system, and at this time, the hydraulic clutch 10 is adopted, and other hydraulic systems are not required to be additionally arranged, and the hydraulic clutch 10 can be directly driven by the original hydraulic system, so that the modification is simple and convenient.
In this embodiment, the timely four-wheel drive traveling system further includes a pump body and a control valve, the pump body is communicated with the hydraulic clutch 10 through the control valve, and the control valve is used for completing connection and disconnection between the pump body and the hydraulic clutch 10.
Specifically, the pump body in this embodiment may be an original pump body in a hydraulic system of the wheel excavator, or may be a pump body newly connected to the original hydraulic system, the pump body is communicated with the control valve through a pipeline, the control valve is communicated with the hydraulic clutch 10 through another pipeline, when the driving mode needs to be switched, the control valve controls the pump body to be communicated with the hydraulic clutch 10, and the pump body can start the hydraulic clutch 10 to be disconnected or connected, so as to complete the switching operation.
In this embodiment, the control valve includes an electromagnetic directional valve 20, and the electromagnetic directional valve 20 is electrically connected to the controller and is used to automatically complete the connection and disconnection between the pump body and the hydraulic clutch 10.
Referring to fig. 2, the timely four-wheel drive traveling system has the following specific working process: monitoring the road condition by a monitoring module; the controller analyzes the road condition to obtain road condition information; if the road condition information is not in the triggering interval, the electromagnetic directional valve 20 is not triggered to change the direction, and the original driving mode is maintained; if the road condition information is in the triggering interval, the controller controls the electromagnetic directional valve 20 to work; when the hydraulic clutch 10 works, the connection state between the gearbox and the front transmission shaft is changed, and the original driving mode is changed.
The timely four-wheel-drive traveling system can automatically complete the change of the driving mode according to the road condition, the switching speed is higher, the switching time is better, and the situation of insufficient power or waste is further avoided.
Or, the control valve in this embodiment may also be a manual valve, at this time, the timely four-wheel drive traveling system is preferably further provided with a reminding module, the reminding module is electrically connected with the controller, when the road condition information analyzed by the controller is in the trigger interval, the controller can control the reminding module to remind an operator, and the operator operates the control valve to complete switching of the driving mode. The reminding module at this moment can remind for sound (like voice broadcast), also can remind visually (like bright red light representative needs to switch), or has two kinds of warning functions simultaneously.
Referring to fig. 1, in the present embodiment, the electromagnetic directional valve 20 includes a two-position four-way valve, a port a of the two-position four-way valve is communicated with a port P of the hydraulic clutch 10, a port B of the two-position four-way valve is communicated with a port T of the hydraulic clutch 10, the port P of the two-position four-way valve is communicated with the pump body, and the port T of the two-position four-way valve is communicated with the oil tank 40.
Specifically, when the two-position four-way valve is switched to the first position, the port a and the port P of the two-position four-way valve are communicated, the port B and the port T are communicated, that is, the pump body is communicated with the port P of the hydraulic clutch 10, and the port T of the hydraulic clutch 10 is communicated with the oil tank 40, at this time, the pump body drives hydraulic oil to enter from the port P of the hydraulic clutch 10, the hydraulic clutch 10 is in an engaged state, and the wheel excavator is in a four-wheel drive mode; when the two-position four-way valve is switched to the second position, the port A and the port T of the two-position four-way valve are communicated, the port B and the port P are communicated, namely the pump body is communicated with the port T of the hydraulic clutch 10, the port P of the hydraulic clutch 10 is communicated with the oil tank 40, at the moment, the pump body drives hydraulic oil to enter from the port T of the hydraulic clutch 10, the hydraulic clutch 10 is in a disconnected state, and the wheel type excavator is in a two-drive mode.
It should be noted that the oil tank 40 in the present embodiment refers to an oil tank existing in a hydraulic system of a wheel excavator.
In this embodiment, the timely four-wheel drive traveling system further includes a pilot pipeline 50, the pump body includes a pilot pump 30, one end of the pilot pipeline 50 is connected with the pilot pump 30, and the other end is connected with a port P of the two-position four-way valve.
Specifically, the pilot pump 30 is used as a pump body which is started first in the hydraulic system, and when the driving mode needs to be switched, the pilot pump 30 can quickly respond to the driving mode, and quickly complete the driving of the hydraulic clutch 10, so that the timely switching of the driving mode is ensured. In addition, the pressure oil provided by the pilot pump 30 is low-pressure oil, so that the usability of the hydraulic clutch 10 is not affected due to too high pressure while the hydraulic clutch 10 is normally driven.
Alternatively, in the present embodiment, a main pump of the hydraulic system may be connected to the port P of the two-position four-way valve, and the hydraulic clutch 10 may be driven by the main pump to operate, so that the driving mode may be switched. At this time, it is preferable to provide an overflow valve between the main pump and the two-position four-way valve to ensure that the service life of the hydraulic clutch 10 is not affected by too high hydraulic oil output thereto.
In this embodiment, the monitoring module includes a first pressure sensor mounted to the main pump for monitoring an outlet pressure of the main pump.
Specifically, in the running process of the wheel excavator, the hydraulic system plays a role in supporting a load, at the moment, the outlet pressure of the main pump is the same as the load of the wheel excavator, the first pressure sensor is electrically connected with the controller, when the wheel excavator runs from a smooth road to a severe road, frequent shaking of the wheel excavator obviously increases the load pressure, and further increases the outlet pressure of the main pump, and at the moment, when the pressure detected by the first pressure sensor exceeds a set pressure value, the controller controls the hydraulic clutch 10 to work so as to switch to a four-wheel drive mode.
In this embodiment, the monitoring module can also include a second pressure sensor, and the timely four-wheel drive traveling system further includes a balance oil cylinder for damping, and the second pressure sensor is installed in the balance oil cylinder and is used for monitoring the oil pressure in the balance oil cylinder.
Specifically, the four groups of balancing cylinders are preferably arranged and correspond to the four wheels one to one, so that the function of damping the vehicle body is achieved, when the wheeled excavator runs from a smooth road to a severe road, the oil pressure in the balancing cylinders is increased, and when the pressure detected by the second pressure sensor exceeds a set pressure value, the controller controls the hydraulic clutch 10 to work, so that the four-wheel drive mode is switched.
It should be noted that the set value compared with the pressure detected by the first pressure sensor is different from the set value compared with the pressure detected by the second pressure sensor, and the two set values are preferably two different ranges, and the controller will control the hydraulic clutch 10 to operate to complete the switching of the driving mode when the pressure detected by the first pressure sensor and the pressure detected by the second pressure sensor are both within the corresponding range.
Or, in this embodiment, the monitoring module may further include an infrared sensor, and the infrared sensor is used to monitor the road condition change.
At this time, the infrared sensor faces the road surface ahead of the travel, and is capable of detecting the distance to the ground, and when the wheel excavator travels on a smooth road surface, the detected distance does not substantially change, whereas when the wheel excavator travels on a rough road surface, the detected distance has a large change width, and when the change width reaches a set value, the controller drives the hydraulic clutch 10 to operate.
Example two
The embodiment provides a wheeled excavator, which comprises the timely four-wheel drive walking system according to any one of the previous embodiments.
The technical effect of the wheel excavator provided by this embodiment is the same as that of the timely four-wheel drive traveling system, and is not described herein again.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A timely four-wheel-drive walking system is characterized by comprising:
a controller;
the monitoring module is electrically connected with the controller and is used for monitoring road conditions; and
and the clutch can complete the switching between four-wheel drive and two-wheel drive according to the road condition.
2. The timely four-wheel drive traction system according to claim 1, characterized in that the clutch comprises a hydraulic clutch (10).
3. The timely four-wheel-drive traveling system according to claim 2, further comprising a pump body and a control valve, wherein the pump body is communicated with the hydraulic clutch (10) through the control valve, and the control valve is used for completing the connection and disconnection between the pump body and the hydraulic clutch (10).
4. The timely four-wheel-drive traveling system according to claim 3, wherein the control valve comprises an electromagnetic directional valve (20), and the electromagnetic directional valve (20) is electrically connected with the controller and is used for automatically completing the connection and disconnection between the pump body and the hydraulic clutch (10).
5. The timely four-wheel drive traveling system according to claim 4, wherein the electromagnetic directional valve (20) comprises a two-position four-way valve, an A port of the two-position four-way valve is communicated with a P port of the hydraulic clutch (10), a B port of the two-position four-way valve is communicated with a T port of the hydraulic clutch (10), the P port of the two-position four-way valve is communicated with a pump body, and the T port of the two-position four-way valve is communicated with an oil tank (40).
6. The timely four-wheel drive traveling system according to claim 5, further comprising a pilot pipeline (50), wherein the pump body comprises a pilot pump (30), and one end of the pilot pipeline (50) is connected with the pilot pump (30) and the other end is connected with a port P of the two-position four-way valve.
7. The timely four-wheel drive walking system according to any one of claims 3-6, wherein the monitoring module comprises a first pressure sensor, the first pressure sensor is mounted to a main pump and is used for monitoring the outlet pressure of the main pump.
8. The timely four-wheel-drive traveling system according to any one of claims 3 to 6, wherein the monitoring module further comprises a second pressure sensor, the timely four-wheel-drive traveling system further comprises a balance cylinder for damping, and the second pressure sensor is mounted on the balance cylinder and is used for monitoring the oil pressure in the balance cylinder.
9. The timely four-wheel-drive walking system according to any one of claims 3-6, wherein the monitoring module further comprises an infrared sensor for monitoring road condition changes.
10. A wheeled excavator comprising a timely four-wheel drive locomotion system according to any one of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911375020.6A CN110924467A (en) | 2019-12-27 | 2019-12-27 | Timely four-wheel-drive traveling system and wheel type excavator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911375020.6A CN110924467A (en) | 2019-12-27 | 2019-12-27 | Timely four-wheel-drive traveling system and wheel type excavator |
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| CN201911375020.6A Pending CN110924467A (en) | 2019-12-27 | 2019-12-27 | Timely four-wheel-drive traveling system and wheel type excavator |
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