CN202029894U - Steering control system and construction vehicle - Google Patents
Steering control system and construction vehicle Download PDFInfo
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- CN202029894U CN202029894U CN2011200947501U CN201120094750U CN202029894U CN 202029894 U CN202029894 U CN 202029894U CN 2011200947501 U CN2011200947501 U CN 2011200947501U CN 201120094750 U CN201120094750 U CN 201120094750U CN 202029894 U CN202029894 U CN 202029894U
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Abstract
The utility model provides a steering control system and a construction vehicle. The steering control system comprises a steering mechanism, a first reversing valve and a second reversing valve, wherein the steering mechanism is used for performing a steering operation on wheels; the first reversing valve is connected to the steering mechanism, and used for controlling the steering operation for the wheels through the steering mechanism; and the second reversing valve is in parallel connection with the first reversing valve and connected to the steering mechanism, and is used for controlling the steering operation for the wheels through the steering mechanism in the condition that the first reversing valve does not work. With application of the technical scheme provided by the utility model, when an electrical control steering system cannot work normally yet at a phase of assembling and commissioning, steering wheels are required to be steered manually; and under the circumstances, such as position calibrating for a steering angle sensor or pressure setting for an overflow valve, and the like, or when the electrical control steering system is broken down or an electro-hydraulic proportional valve is stuck, manual steering can be conveniently carried out in real time, and the safety and controllability for the operation of the manual steering are ensured.
Description
Technical field
The utility model relates to the control field, relates in particular to a kind of control steering swivel system and engineering truck.
Background technology
Be different from traditional dependence be rigidly connected (as the mechanical pull rod rocking arm) guarantee the mechanical steering system of the handling maneuver relation between each wheel flutter, automatically controlled steering swivel system can be by controller such as PLC, rotary angle transmitter, electro-hydraulic proportional valve, turn to device such as oil cylinder to form each wheel flutter that closed loop measures control vehicle also carries out promptly and accurately rotation automatically according to angle relation.But when the initial assembling and setting of wire-controlled steering system of car load (this moment automatically controlled steering swivel system still can not move control), as the rotary angle transmitter Zero positioning, by pass valve pressure setting or holding function test all need to make wheel flutter to carry out handling maneuver, the system that needs each wheel flutter of the convenient and swift manual control of a cover energy to rotate.At automatically controlled steering swivel system et out of order, wheel flutter produces when being parked in non-meta position, also need cover manual control system manual control to do emergent the use, the wheel that control is produced goes back to meta, treat will respectively turn to rear wheel lock to fix on the craspedodrome meta after each wheel flutter forwards meta to, the pattern that vehicle does not turn to back axle is travelled and is gone home to repair the fault of automatically controlled steering swivel system.
Many hoisting cranes producer has adopted the automatically controlled technology that turns on the chassis, but similar hand steering gear is not arranged.Automatically controlled steering swivel system of assembling and setting stage still during cisco unity malfunction if the very important person is for rotating wheel flutter, during as situations such as demarcation of rotary angle transmitter meta or by pass valve pressure settings, automatically controlled steering swivel system break down or during the electro-hydraulic proportional valve hair fastener if the wheel flutter that produces will be rotated back into meta, normally directly stab the spool of the apportioning valve of control wheel flutter action, control the rotation of wheel flutter with the action of forcing spool.But, directly force the action of spool to realize handling maneuver with the spool of private seal valve, not only difficult but also have certain danger, and the action poor controllability.
The utility model content
The utility model aims to provide a kind of steering control system and engineering truck, directly forces the action of spool to realize the problem of handling maneuver danger and poor controllability with the spool of private seal valve to solve in the prior art.
To achieve these goals, according to an aspect of the present utility model, provide a kind of steering control system, having comprised: steering hardware is used to carry out the steering operation of wheel; First change-over valve is connected to steering hardware, is used for the steering operation by steering hardware control wheel; Second change-over valve, in parallel with first change-over valve to be connected to described steering hardware, be used under the state of first diverter valve imoperative steering operation by steering hardware control wheel.
Further, first change-over valve is an electro-hydraulic proportional valve, and this steering control system also comprises: control capsule, be connected with second change-over valve, and be used for after the termination signal that receives first change-over valve, starting, control the spool position of second change-over valve.
Further, first change-over valve and second change-over valve are three position four-way electromagnetic valve, control capsule comprises master cock, master cock comprises three terminals, wherein, the first terminal is connected with power supply, and second terminal is connected with the second end electromagnet with the first end electromagnet of second change-over valve respectively with the 3rd terminal, and the first terminal optionally is connected with one of the 3rd terminal with second terminal.
Further, when the first terminal was connected with second terminal, the first end electromagnet got the electric wheel that makes and turns left.
Further, when the first terminal was connected with the 3rd terminal, the second end electromagnet got the electric wheel that makes and turns right.
Further, this steering control system also comprises: first by pass valve, and in parallel with first change-over valve; Second by pass valve, in parallel with second change-over valve.
Further, second terminal is connected by the plug plug respectively with the second end electromagnet with the first end electromagnet with the 3rd terminal.
Further, the pressure hydraulic fluid port of first change-over valve is connected with the pressure hydraulic fluid port of second change-over valve, and is connected to pressure oil-source; The return opening of first change-over valve is connected with the return opening of second change-over valve, and is connected to fuel tank; First actuator port of first change-over valve is connected with first actuator port of second change-over valve, and is connected to the rod chamber that turns to oil cylinder of steering hardware; Second actuator port of first change-over valve is connected with second actuator port of second change-over valve, and is connected to the rodless cavity that turns to oil cylinder of steering hardware.
According on the other hand of the present utility model, a kind of engineering truck is provided, comprise above-mentioned steering control system.
Further, this project vehicle comprises and a plurality ofly turns to vehicle bridge and be respectively applied for this a plurality of a plurality of steering control systems that turn to vehicle bridge, the control capsule of these a plurality of steering control systems is a shared control capsule, this shared control capsule comprises a plurality of master cocies, is connected with second change-over valve of each steering control system respectively.
Use the technical solution of the utility model, still need the artificial wheel flutter that rotates during cisco unity malfunction at automatically controlled steering swivel system of assembling and setting stage, during as situations such as demarcation of rotary angle transmitter meta or by pass valve pressure settings, or break down or during the electro-hydraulic proportional valve hair fastener at automatically controlled steering swivel system, can make things convenient for and carry out manual steering in time, guarantee the safety and the controllability of manual steering operation.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.With reference to figure, the utility model is described in further detail below.
Description of drawings
Accompanying drawing is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 shows the steering control system according to the utility model embodiment;
Fig. 2 shows the shared control capsule according to the utility model embodiment;
Fig. 3 shows the shared control capsule that can plug plug according to having of the utility model embodiment; And
Fig. 4 shows according to the control capsule of the utility model embodiment and the circuit connection diagram of change-over valve.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Describe the utility model embodiment in detail below in conjunction with Fig. 1.
Fig. 1 shows the steering control system according to the utility model embodiment.This steering control system comprises: steering hardware is used to carry out the steering operation of wheel; First change-over valve 101 is connected to steering hardware, is used for the steering operation by steering hardware control wheel; Second change-over valve 102, in parallel with first change-over valve 101 to be connected to described steering hardware, be used under first change-over valve, 101 out-of-run states steering operation by steering hardware control wheel.
In the utility model embodiment, first change-over valve 101 is an electro-hydraulic proportional valve, and this steering control system also comprises: control capsule is connected with second change-over valve 102, be used for after the termination signal that receives first change-over valve 101, starting, control the spool position of second change-over valve 102.
Wherein, first change-over valve 101 and second change-over valve 102 are three position four-way electromagnetic valve, control capsule comprises master cock, master cock comprises three terminals, wherein, the first terminal is connected with power supply, and second terminal is connected with the second end electromagnet with the first end electromagnet of second change-over valve respectively with the 3rd terminal, and the first terminal optionally is connected with one of the 3rd terminal with second terminal.
When the first terminal was connected with second terminal, the first end electromagnet got the electric wheel that makes and turns left.When the first terminal was connected with the 3rd terminal, the second end electromagnet got the electric wheel that makes and turns right.
In the utility model embodiment, this steering control system also comprises: first by pass valve 103, and in parallel with first change-over valve 101; Second by pass valve 104, in parallel with second change-over valve 102.First by pass valve 103 and second by pass valve 104 play level pressure overflow effect and safety guard-safeguard effect in hydraulic efficiency equipment.
Second terminal is connected by the plug plug respectively with the second end electromagnet with the first end electromagnet with the 3rd terminal.
In the utility model embodiment, the pressure hydraulic fluid port of first change-over valve 101 is connected with the pressure hydraulic fluid port of second change-over valve 102, and is connected to pressure oil-source; The return opening of first change-over valve 101 is connected with the return opening of second change-over valve 102, and is connected to fuel tank; First actuator port of first change-over valve 101 is connected with first actuator port of second change-over valve 102, and is connected to the rod chamber that turns to oil cylinder of steering hardware; Second actuator port of first change-over valve 101 is connected with second actuator port of second change-over valve 102, and is connected to the rodless cavity that turns to oil cylinder of steering hardware.
For second change-over valve 102 among Fig. 1, should choose suitable flow specification, the speed of wheel turns is moderate gently during with the assurance M/C, is convenient to regulate and control.
Second embodiment of the present utility model provides a kind of engineering truck, and this project vehicle is included in the control system that discloses among first embodiment.
In the utility model second embodiment, this project vehicle comprises and a plurality ofly turns to vehicle bridge and be respectively applied for this a plurality of a plurality of steering control systems that turn to vehicle bridge, the control capsule of these a plurality of steering control systems is a shared control capsule, this shared control capsule comprises a plurality of master cocies, is connected with second change-over valve of each steering control system respectively.
Fig. 2 shows the shared control capsule according to the utility model embodiment.Wherein, shared control capsule comprises four master cocies, but is not limited only to use four master cocies, can also use two, three, five, six etc.In Fig. 2, four master cocies are respectively applied for four of controls and turn to vehicle bridge steering control system separately.The mode of each master cock is all identical.
Fig. 3 shows the shared control capsule that can plug plug according to having of the utility model embodiment, and shared control capsule can be realized and being connected of second change-over valve 102 of each steering control system by plugging plug 301.
Fig. 4 shows according to the shared control capsule of the utility model embodiment and the circuit connection diagram of change-over valve.In Fig. 4, the first terminal 1 of the first master cock SA4 is connected with the 24V power supply, and second terminal 2 is connected with the second end electromagnet Y4B with the first end electromagnet Y4A of the 3rd change-over valve respectively with the 3rd terminal 3; The first terminal 1 of the second master cock SA5 is connected with the 24V power supply, and second terminal 2 is connected with the second end electromagnet Y5B with the first end electromagnet Y5A of the 4th change-over valve respectively with the 3rd terminal 3; The first terminal 1 of the 3rd master cock SA6 is connected with the 24V power supply, and second terminal 2 is connected with the second end electromagnet Y6B with the first end electromagnet Y6A of the 5th change-over valve respectively with the 3rd terminal 3; The first terminal 1 of the 4th master cock SA7 is connected with the 24V power supply, and second terminal 2 is connected with the second end electromagnet Y7B with the first end electromagnet Y7A of the 6th change-over valve respectively with the 3rd terminal 3.Wherein, be connected by plugging plug between terminal and power supply or the electromagnet.
Turning to vehicle bridge with one of first master cock SA4 control below is the mode that example is described steering control system.
When first change-over valve, 101 control wheel handling maneuvers, second change-over valve 102 in parallel with it does not worked, and its spool is in meta, and manually control capsule can not get electric work yet.After breaking down or need manual steering when operation, control capsule to receive the termination signal of first change-over valve 101, first change-over valve 101 starts.Particularly, when the first master cock SA4 of control capsule placed the position that indicates the left-hand rotation font, the first terminal 1 of the first master cock SA4 was connected with second terminal 2, and it is electric to make that the first end electromagnet Y4A of the 3rd change-over valve gets, thereby realized that wheel turns left.When the first master cock SA4 of control capsule placed the position that indicates the right-hand rotation font, the first terminal 1 of the first master cock SA4 was connected with the 3rd terminal 3, and it is electric to make that the second end electromagnet Y4B of the 3rd change-over valve gets, thereby realized that wheel turns right.
From above description, as can be seen, the utility model the above embodiments have realized following technique effect: still need the artificial wheel flutter that rotates during cisco unity malfunction at automatically controlled steering swivel system of assembling and setting stage, during as situations such as demarcation of rotary angle transmitter meta or by pass valve pressure settings, or break down or during the electro-hydraulic proportional valve hair fastener at automatically controlled steering swivel system, can make things convenient for and carry out manual steering in time, guarantee the safety and the controllability of manual steering operation.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. steering control system comprises:
Steering hardware is used to carry out the steering operation of wheel;
First change-over valve is connected to described steering hardware, is used for controlling by described steering hardware the steering operation of described wheel;
It is characterized in that described steering control system also comprises:
Second change-over valve, in parallel with described first change-over valve to be connected to described steering hardware, be used under the state of described first diverter valve imoperative, controlling the steering operation of described wheel by described steering hardware.
2. system according to claim 1, it is characterized in that, described first change-over valve is an electro-hydraulic proportional valve, described system also comprises: control capsule, be connected with described second change-over valve, be used for after the termination signal that receives described first change-over valve, starting, control the spool position of described second change-over valve.
3. system according to claim 2, it is characterized in that, described first change-over valve and described second change-over valve are three position four-way electromagnetic valve, described control capsule comprises master cock, described master cock comprises three terminals, and wherein, the first terminal is connected with power supply, second terminal is connected with the second end electromagnet with the first end electromagnet of described second change-over valve respectively with the 3rd terminal, and described the first terminal optionally is connected with one of the 3rd terminal with described second terminal.
4. system according to claim 3 is characterized in that, when described the first terminal was connected with described second terminal, the described first end electromagnet got the electric described wheel left-hand rotation that makes.
5. system according to claim 3 is characterized in that, when described the first terminal was connected with described the 3rd terminal, the described second end electromagnet got the electric described wheel right-hand rotation that makes.
6. system according to claim 1 is characterized in that, also comprises:
First by pass valve, in parallel with described first change-over valve;
Second by pass valve, in parallel with described second change-over valve.
7. according to claim 4 or 5 described systems, it is characterized in that described second terminal is connected by the plug plug respectively with the described second end electromagnet with the described first end electromagnet with described the 3rd terminal.
8. system according to claim 1 is characterized in that,
The pressure hydraulic fluid port of described first change-over valve is connected with the pressure hydraulic fluid port of described second change-over valve, and is connected to pressure oil-source;
The return opening of described first change-over valve is connected with the return opening of described second change-over valve, and is connected to fuel tank;
First actuator port of described first change-over valve is connected with first actuator port of described second change-over valve, and is connected to the rod chamber that turns to oil cylinder of described steering hardware;
Second actuator port of described first change-over valve is connected with second actuator port of described second change-over valve, and is connected to the rodless cavity that turns to oil cylinder of described steering hardware.
9. an engineering truck is characterized in that, comprises each described steering control system among the claim 1-8.
10. engineering truck according to claim 9, it is characterized in that, described engineering truck comprises and a plurality ofly turns to vehicle bridge and be respectively applied for described a plurality of a plurality of described steering control system that turns to vehicle bridge, the control capsule of described a plurality of steering control systems is a shared control capsule, described shared control capsule comprises a plurality of master cocies, is connected with second change-over valve of each steering control system respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200947501U CN202029894U (en) | 2011-04-01 | 2011-04-01 | Steering control system and construction vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200947501U CN202029894U (en) | 2011-04-01 | 2011-04-01 | Steering control system and construction vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202029894U true CN202029894U (en) | 2011-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200947501U Expired - Lifetime CN202029894U (en) | 2011-04-01 | 2011-04-01 | Steering control system and construction vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202029894U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897212A (en) * | 2012-11-09 | 2013-01-30 | 临沂三禾永佳动力有限公司 | Steering device for self-propelled sprayer |
| CN112498475A (en) * | 2020-12-11 | 2021-03-16 | 湖北航天技术研究院特种车辆技术中心 | Chassis steering system, safety protection method and device |
| CN112550444A (en) * | 2021-01-24 | 2021-03-26 | 福州大学 | Energy-saving type electro-hydraulic power-assisted steering system for heavy vehicle and control method |
| CN114932948A (en) * | 2022-06-29 | 2022-08-23 | 北京主线科技有限公司 | Method and device for determining vehicle wheel angle control quantity and storage medium |
-
2011
- 2011-04-01 CN CN2011200947501U patent/CN202029894U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897212A (en) * | 2012-11-09 | 2013-01-30 | 临沂三禾永佳动力有限公司 | Steering device for self-propelled sprayer |
| CN112498475A (en) * | 2020-12-11 | 2021-03-16 | 湖北航天技术研究院特种车辆技术中心 | Chassis steering system, safety protection method and device |
| CN112498475B (en) * | 2020-12-11 | 2022-03-25 | 湖北航天技术研究院特种车辆技术中心 | Chassis steering system, safety protection method and device |
| CN112550444A (en) * | 2021-01-24 | 2021-03-26 | 福州大学 | Energy-saving type electro-hydraulic power-assisted steering system for heavy vehicle and control method |
| CN112550444B (en) * | 2021-01-24 | 2022-04-29 | 福州大学 | Energy-saving type electro-hydraulic power-assisted steering system for heavy vehicle and control method |
| CN114932948A (en) * | 2022-06-29 | 2022-08-23 | 北京主线科技有限公司 | Method and device for determining vehicle wheel angle control quantity and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 410013 No. 361 South silver basin, Hunan, Changsha Patentee after: Zoomlion Heavy Industry Science & Technology Development Co., Ltd. Address before: 410013 No. 361 South silver basin, Hunan, Changsha Patentee before: Chang Sha Zoomlion Heavy Industry Science & Technology Development Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20111109 |
|
| CX01 | Expiry of patent term |