CN212354145U - Steering wheel control crawler steering mechanism - Google Patents
Steering wheel control crawler steering mechanism Download PDFInfo
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- CN212354145U CN212354145U CN201922319399.0U CN201922319399U CN212354145U CN 212354145 U CN212354145 U CN 212354145U CN 201922319399 U CN201922319399 U CN 201922319399U CN 212354145 U CN212354145 U CN 212354145U
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- steering
- electric proportional
- way valve
- proportional multi
- load
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Abstract
A steering wheel control crawler steering mechanism belongs to the technical field of vehicle steering mechanisms. The steering wheel, the variable pump with load sensitivity, the electric proportional multi-way valve, the programmable controller and the speed reducer of the mechanism are all arranged on the crawler traveling device, the steering shaft is connected with the steering wheel, the encoder is arranged on the steering shaft, the motor is arranged on the speed reducer, the variable pump with load sensitivity is connected with the electric proportional multi-way valve through a hydraulic pipeline, the electric proportional multi-way valve is connected with the motor through a hydraulic pipeline, the programmable controller is electrically connected with the encoder and the electric proportional multi-way valve, and the electronic pedal is electrically connected with the programmable controller. Compared with the traditional steering mechanism of the crawler, the crawler steering mechanism has no structures such as a clutch, a brake, a friction plate, a gearbox, a pilot valve and the like, and realizes linear walking and steering by changing the opening degree of the electric proportional multi-way valve through the controller. The power of the variable pump with the load sensitivity is adjustable according to the load condition, the steering is more accurate, the operation is simpler, and the requirement on the technical level of a driver is lower.
Description
Technical Field
The utility model relates to a vehicle steering mechanism technical field, in particular to steering wheel control track turns to running gear.
Background
The crawler belt is used as a running mechanism of the vehicle, so that the off-road capacity of the vehicle leaving the road is enhanced, and the load bearing capacity of the vehicle is increased. The steering mechanism of the vehicle is an important component of the vehicle, and the quality of the performance of the steering mechanism directly influences the technical performance of the vehicle. The prior art has a vehicle caterpillar steering mechanism which mainly comprises the following parts:
the single power flow steering mechanism mainly comprises a steering clutch, a single differential mechanism, a double differential mechanism and a planetary steering mechanism, the mechanism mainly depends on a friction plate of the clutch to transmit torque, and the mechanism has the defects of poor operability, serious abrasion, poor working reliability and the like.
The mechanical double-power flow steering mechanism mainly comprises a gearbox, a planetary gear mechanism, a clutch and a planetary gear brake. The turning radius of the mechanism is mainly determined by gears, and the mechanism cannot be applied to roads with all curvatures and cannot eliminate the abrasion of friction elements.
The mechanical hydraulic double-power flow steering mechanism consists of variable pump, control valve, quantitative motor, multi-gear speed changing box and back axle differential mechanism. The variable pump and the motor control the hydraulic elements to realize stepless steering of the vehicle. However, this mechanism is susceptible to wear of the clutch and brake, and is highly required in terms of the skill level of the driver, and is also prone to fatigue of the driver.
The pure hydraulic stepless steering mechanism consists of variable pump, pilot valve, multiway valve, quantitative motor and other mechanisms. Although the steering mechanism realizes the steering performance with controllable steering radius and continuous and stepless change, the pilot quantity of the pilot valve is not easy to control, so that the steering mechanism cannot accurately steer, and the requirement on the technical level of a driver is very high.
SUMMERY OF THE UTILITY MODEL
The defect to prior art exists, the utility model provides a steering wheel control track steering mechanism has simple structure, can realize the accuracy and turn to, and can alleviate operator's intensity of labour by a wide margin.
In order to achieve the above object, the utility model provides a steering wheel control track steering mechanism, by track running gear, the steering wheel, the steering spindle, the shaft coupling, the encoder, programmable controller, the sensitive variable pump of area load, the electric proportional multi-way valve, the reduction gear, motor and electronic pedal constitute, wherein the steering wheel, the sensitive variable pump of area load, the electric proportional multi-way valve, programmable controller and reduction gear all set up on track running gear, the steering spindle is connected with the steering wheel, the encoder sets up on the steering spindle, the motor sets up on the reduction gear, and the sensitive variable pump of area load is connected with the electric proportional multi-way valve through hydraulic tubing, the electric proportional multi-way valve is connected with the motor through hydraulic line, programmable controller with encoder, the electric proportional multi-way valve electricity be connected, electronic pedal is connected with programmable controller electricity;
the encoder is used for converting the corner signal of the steering wheel into a pulse signal;
the load-sensitive variable pump is used for providing hydraulic power;
the programmable controller is used for receiving a pulse signal;
the electronic pedal is used for controlling the flow of the electric proportional multi-way valve.
Furthermore, the electric proportional multi-way valve is provided with two working valve bodies, and an A, B port of each valve body is directly connected with the two motors through a hydraulic oil pipe.
Furthermore, the two working valve bodies of the electric proportional multi-way valve are also sensitive to load, so that the two working valve bodies of the electric proportional multi-way valve are not interfered when working, meanwhile, the electric proportional multi-way valve is connected with the load of the variable pump sensitive to load, the load condition of the crawler can be fed back to the variable pump sensitive to load, and the power of the variable pump sensitive to load is controlled not to exceed the power of the prime power.
The utility model discloses have following function:
and (5) a linear walking function. When the vehicle travels in a straight line, the electronic pedal is stepped on, the electronic pedal outputs 0-5V analog voltage to the programmable controller, the analog voltage is processed by the programmable controller, and finally a signal is transmitted to the electric proportional multi-way valve to control the opening of the electric proportional multi-way valve, so that the straight line traveling of the vehicle is realized, and the speed of the vehicle is controlled.
A steering function. When the electric proportional multi-way valve needs to be turned, the steering wheel rotates to drive the steering shaft to rotate, the shaft coupling drives the encoder to rotate, the encoder rotates to generate pulse signals, the pulse signals are transmitted to the programmable controller and then processed by the programmable controller, and finally the signals are transmitted to the electric proportional multi-way valve to control the different opening degrees of the electric proportional multi-way valve, so that the rotating speeds of the two motors are different, and the turning of a vehicle is realized.
A pivot steering function. When the mechanism is turned on site, the flow rates of the two electric proportional multi-way valves can be opposite through the programmable controller, namely oil is discharged from the port A of the first piece and returned from the port B of the first piece, and oil is discharged from the port B of the second piece and returned from the port A of the second piece, so that the mechanism can be turned on site.
The beneficial effects of the utility model are embodied in:
compared with the traditional steering mechanism of the crawler, the steering mechanism has the advantages that the structure is simpler because the steering mechanism is not provided with a clutch, a brake, a friction plate, a gearbox, a pilot valve and the like. And when the electric proportional multi-way valve is turned, the opening degree of the electric proportional multi-way valve is changed through the controller, so that the speed difference of the left motor and the right motor is realized, and the purpose of turning is achieved. Meanwhile, the power of the variable displacement pump with the load sensitivity changes according to the load condition, so that the power is more fully utilized, a large amount of energy is saved, the steering is more accurate, the operation is simpler, the requirement on the technical level of a driver is lower, and the working efficiency and the fault tolerance and safety of the system are improved.
Drawings
FIG. 1 is a front view of the steering wheel control track steering mechanism of the present invention;
FIG. 2 is a structural plan view of the novel steering wheel control crawler steering traveling mechanism;
fig. 3 is an electrical schematic diagram of the novel steering wheel control crawler steering walking mechanism.
The meanings of the symbols in FIGS. 1 to 3 are as follows:
1-encoder, 2-shaft coupling, 3-steering wheel, 4-electronic pedal, 5-programmable controller, 6-sensitive variable pump with load, 7-crawler unit, 8-hydraulic oil pipe, 9-motor, 10-reducer, 11-steering shaft, 12-electric proportional multi-way valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
The utility model discloses a concrete embodiment, as shown in fig. 1 and 2, by encoder 1, shaft coupling 2, steering wheel 3, electronic pedal 4, programmable controller 5, take the sensitive variable pump 6 of load, crawler travel unit 7, hydraulic pressure oil pipe 8, motor 9, reduction gear 10, steering spindle 11 and electric proportional multi-way valve 12 to constitute, wherein steering wheel 3, take the sensitive variable pump 6 of load, electric proportional multi-way valve 12, programmable controller 5 and reduction gear 10 all set up on crawler travel unit 7, steering spindle 11 is connected with steering wheel 3, encoder 1 sets up on steering spindle 11, motor 9 sets up on reduction gear 10, and take the sensitive variable pump 6 of load to be connected with electric proportional multi-way valve 12 through hydraulic pressure oil pipe 8, electric proportional multi-way valve 12 is connected with motor 9 through hydraulic pressure oil pipe 8, programmable controller 5 with encoder 1, The electric proportional multi-way valve 12 is electrically connected, and the electronic pedal 4 is electrically connected with the programmable controller 5;
the encoder 1 is used for converting the corner signal of the steering wheel into a pulse signal;
the load-sensitive variable pump 6 is used for providing hydraulic power;
the programmable controller 5 is used for receiving a pulse signal, the model is RC6-9 of Lishile, and the electrical principle structure of the programmable controller is shown in FIG. 3;
the electronic pedal 4 is used for controlling the flow of the electric proportional multi-way valve.
Furthermore, the number of the motors 9 is two, the electric proportional multi-way valve 12 has two working valve bodies, and an A, B port of each working valve body is directly connected with the two motors 9 through a hydraulic oil pipe 8.
Furthermore, the two working valve bodies of the electric proportional multi-way valve 12 are also sensitive to load, so that the two working valve bodies of the electric proportional multi-way valve 12 are not interfered when working, and meanwhile, the electric proportional multi-way valve 12 is connected with the load of the variable pump 6 sensitive to load, so that the load condition of the crawler can be fed back to the variable pump 6 sensitive to load, and the power of the variable pump 6 sensitive to load is controlled not to exceed the power of the prime power.
The present embodiment has the following functions:
and (5) a linear walking function. When the vehicle travels in a straight line, as shown in fig. 3, the electronic pedal 4 is stepped on, the electronic pedal 4 outputs 0V to 5V of analog voltage to the programmable controller 5, the analog voltage is processed by the programmable controller 5, and finally, a signal is transmitted to the electric proportional multi-way valve 12 to control the opening of the electric proportional multi-way valve 12, so that the vehicle travels in a straight line, and the speed of the vehicle is controlled.
A steering function. When the vehicle needs to turn, the steering wheel 3 rotates to drive the steering shaft 11 to rotate, then the shaft coupling 2 drives the encoder 1 to rotate, the encoder 1 rotates to generate pulse signals, the pulse signals are transmitted to the programmable controller 5 and then processed by the programmable controller 5, and finally the signals are transmitted to the electric proportional multi-way valve 12 to control the different opening degrees of the electric proportional multi-way valve 12, so that the rotating speeds of the two motors 9 are different, and the vehicle can turn.
A pivot steering function. When the mechanism is turned on site, the flow rates of the two electric proportional multi-way valves 12 can be opposite through the programmable controller 5, namely, the first port A is used for oil outlet and the port B is used for oil return, and the second port B is used for oil outlet and the port A is used for oil return, so that the mechanism can be turned on site.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A steering wheel control track steering mechanism is characterized by comprising a track walking device, a steering wheel, a steering shaft, a coupling, an encoder, a programmable controller, a load-sensitive variable pump, an electric proportional multi-way valve, a speed reducer, a motor and an electronic pedal, wherein the steering wheel, the load-sensitive variable pump, the electric proportional multi-way valve, the programmable controller and the speed reducer are all arranged on the track walking device;
the encoder is used for converting the corner signal of the steering wheel into a pulse signal;
the load-sensitive variable pump is used for providing hydraulic power;
the programmable controller is used for receiving a pulse signal;
the electronic pedal is used for controlling the flow of the electric proportional multi-way valve.
2. A steering wheel controlled track steering mechanism as claimed in claim 1, wherein:
the electric proportional multi-way valve is provided with two working valve bodies, and an A, B port of each valve body is directly connected with the two motors through a hydraulic oil pipe.
3. A steering wheel controlled track steering mechanism as claimed in claim 1, wherein:
the two working valve bodies of the electric proportional multi-way valve are also sensitive to load, so that the two working valve bodies of the electric proportional multi-way valve are not interfered when working, meanwhile, the electric proportional multi-way valve is connected with the load of the variable pump sensitive to load, the load condition of the crawler can be fed back to the variable pump sensitive to load, and the power of the variable pump sensitive to load is controlled not to exceed the power of the prime power.
4. A steering wheel controlled track steering mechanism as claimed in claim 1, 2 or 3, wherein:
through the programmable controller, the flow rates of the two electric proportional multi-way valves are opposite, namely oil is discharged from the port A of the first piece and returns to the port B, and oil is discharged from the port B of the second piece and returns to the port A, so that the pivot steering of the mechanism can be realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922319399.0U CN212354145U (en) | 2019-12-23 | 2019-12-23 | Steering wheel control crawler steering mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922319399.0U CN212354145U (en) | 2019-12-23 | 2019-12-23 | Steering wheel control crawler steering mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212354145U true CN212354145U (en) | 2021-01-15 |
Family
ID=74137034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922319399.0U Expired - Fee Related CN212354145U (en) | 2019-12-23 | 2019-12-23 | Steering wheel control crawler steering mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212354145U (en) |
-
2019
- 2019-12-23 CN CN201922319399.0U patent/CN212354145U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210115 Termination date: 20211223 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |