CN209814088U - Full-hydraulic steering system of underground concrete mixer truck for metal mine - Google Patents
Full-hydraulic steering system of underground concrete mixer truck for metal mine Download PDFInfo
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- CN209814088U CN209814088U CN201920564366.XU CN201920564366U CN209814088U CN 209814088 U CN209814088 U CN 209814088U CN 201920564366 U CN201920564366 U CN 201920564366U CN 209814088 U CN209814088 U CN 209814088U
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Abstract
The utility model relates to a full hydraulic steering system of a metal mine underground concrete mixer truck, which belongs to the technical field of concrete mixer trucks and comprises a hydraulic oil tank, wherein the hydraulic oil tank is connected with a steering gear through a hydraulic oil way, and an oil outlet of the steering gear is connected with an electromagnetic directional valve through a hydraulic oil way; a first oil port of the electromagnetic directional valve is connected with a front axle steering oil cylinder through a front hydraulic oil path, and an oil outlet of the front axle steering oil cylinder is connected with an oil return port of a steering gear through a hydraulic oil path; and a second oil port and a third oil port of the electromagnetic directional valve are respectively connected with the rear axle steering oil cylinder through a rear hydraulic oil path, and a pressure maintaining piece is arranged on the rear hydraulic oil path. The utility model has the advantages of can realize the four-wheel steering, can be used for the trucd mixer on rigidity chassis, reducible turning radius for the trucd mixer can adapt to turning to in the narrow and small space in the pit.
Description
Technical Field
The utility model relates to a full hydraulic steering system of metal mine underground concrete mixing transport vechicle belongs to concrete mixing transport vechicle technical field.
Background
At present, the concrete mixer truck of metal mine borehole operation mostly adopts articulated chassis structure, however, the mixer truck of articulated chassis structure need set up preceding frame and back frame, and need two hydro-cylinders of articulated position symmetrical arrangement of preceding back frame, utilize the differential connection of the pole chamber and the rodless chamber of both sides hydro-cylinder to realize when turning to, such structure can make whole car length increase on arranging, therefore, under the circumstances that whole car width is the same, the turning radius of articulated chassis mixer truck is great relatively, this is unfavorable for passing through the narrow and small metal mine in tunnel, in order to overcome above disadvantages, current common way chooses the mixer truck of car length and width undersize for use, along with, the agitator tank volume of mixer truck also can reduce, from this the mixer truck operation that needs more when transporting same amount of concrete. Therefore, how to improve the design of the mixer truck so as to adapt to the steering in the narrow space in the well is an urgent problem to be solved.
Disclosure of Invention
For the not enough in the technique above solving, the utility model provides a metal mine is full-hydraulic steering system of concrete mixing transport vechicle in pit can realize four-wheel steering, can be used for the trucd mixer on rigidity chassis, can reduce turning radius for the trucd mixer can adapt to turning to in the narrow and small space in pit.
The technical scheme of the utility model as follows: a full-hydraulic steering system of a metal mine underground concrete mixer truck comprises a hydraulic oil tank, wherein the hydraulic oil tank is connected with a steering gear through a hydraulic oil way, and an oil outlet of the steering gear is connected with an electromagnetic directional valve through the hydraulic oil way;
a first oil port of the electromagnetic directional valve is connected with a front axle steering oil cylinder through a front hydraulic oil path, and an oil outlet of the front axle steering oil cylinder is connected with an oil return port of a steering gear through a hydraulic oil path;
and a second oil port and a third oil port of the electromagnetic directional valve are respectively connected with the rear axle steering oil cylinder through a rear hydraulic oil path, and a pressure maintaining piece is arranged on the rear hydraulic oil path.
The technical scheme of the utility model still include: the second oil port of the electromagnetic directional valve is connected with the left position of the rear axle steering oil cylinder through a rear hydraulic oil path, the third oil port of the electromagnetic directional valve is connected with the right position of the rear axle steering oil cylinder through a rear hydraulic oil path, and the pressure maintaining piece is a hydraulic lock.
The technical scheme of the utility model still include: the hydraulic oil pressure of the oil outlet of the electromagnetic directional valve of the first oil port is half of that of the oil outlet of the electromagnetic directional valve of the second oil port or the third oil port.
The technical scheme of the utility model still include: and a priority valve is arranged on a hydraulic oil path connecting the hydraulic oil tank and the steering gear, and a CF oil port of the priority valve is connected with the steering gear through the hydraulic oil path.
The technical scheme of the utility model still include: an oil absorption filter, an oil pump, a high-pressure filter and a priority valve are sequentially arranged on a hydraulic oil path connected with the steering gear, and an overflow valve is arranged between the oil pump and the hydraulic oil tank.
The utility model also provides a full hydraulic steering method of the metal mine underground concrete mixer, which utilizes hydraulic oil to drive the front axle and the rear axle, and realizes that the integral rigid frame can complete the steering of the front wheels, the centripetal steering and the wedge steering;
the front wheel steering is the front wheel active steering, and the rear wheel driven steering;
the centripetal steering is that the angle of the front wheel for active steering is opposite to the angle of the rear wheel for active steering;
the wedge-shaped steering is that the active steering angle of the front wheel is the same as the active steering angle of the rear wheel.
The technical scheme of the utility model still include: the steering operation steps of the front wheel are that a knob switch of a cab is controlled to be in a middle position, hydraulic oil flows to a priority valve from a hydraulic oil tank through a hydraulic oil path, the hydraulic oil is discharged from a CF oil port of the priority valve and enters a steering gear, the hydraulic oil is discharged from the steering gear and enters an electromagnetic directional valve, a first oil port of the electromagnetic directional valve is opened at the moment, the hydraulic oil enters a front axle steering oil cylinder through the first oil port and is then discharged to the steering gear from the other side of the front axle steering oil cylinder, and the steering of the front wheel is completed.
The technical scheme of the utility model still include: the operation steps of the centripetal steering are that a driving knob switch is controlled to be in a left position, the left position of the electromagnetic directional valve is electrified at the moment, a third oil port is opened, hydraulic oil which comes from a hydraulic oil tank and reaches the electromagnetic directional valve through a priority valve and a steering gear is discharged from the third oil port of the electromagnetic directional valve, enters the right position of the rear axle steering oil cylinder after passing through a hydraulic lock, is discharged from a second oil port of the electromagnetic directional valve through the hydraulic lock, is discharged from a first oil port of the electromagnetic directional valve to the front axle steering oil cylinder, and is finally discharged from the other side of the front axle steering oil cylinder to the steering gear, and the centripetal steering is completed.
The technical scheme of the utility model still include: the wedge-shaped steering operation steps comprise that a driving knob switch is controlled to be in a right position, the right position of an electromagnetic directional valve is electrified at the moment, a second oil port is opened, hydraulic oil which comes from a hydraulic oil tank and reaches the electromagnetic directional valve through a priority valve and a steering gear flows out from the second oil port of the electromagnetic directional valve, enters the left position of a rear axle steering oil cylinder after passing through a hydraulic lock, then flows out from a third oil port of the electromagnetic directional valve through the hydraulic lock, flows out from a first oil port of the electromagnetic directional valve to a front axle steering oil cylinder, and finally flows out from the other side of the front axle steering oil cylinder to the steering gear to finish the wedge-shaped steering.
The utility model has the advantages that: the hydraulic steering system of the mixer truck is improved, the steering cylinders are arranged at the front axle and the rear axle, the front axle steering cylinder and the rear axle steering cylinder are connected with different oil ports of the electromagnetic directional valve, four-wheel steering of the front axle and the rear axle can be realized by controlling the opening of the different oil ports of the electromagnetic directional valve, the rotation of the front axle and the rear axle in different combination modes can be realized, the mixer truck can be applied to a rigid chassis, the size of the whole truck can be shortened, the turning radius can be further reduced, the mixer truck can be steered in a narrow underground space, and the trafficability of the mixer truck is stronger and more flexible; in addition, a pressure maintaining piece is arranged on a rear hydraulic oil path communicated with the electromagnetic directional valve, so that the pressure of the rear axle steering oil cylinder can be maintained, and the reliable steering action is ensured.
The utility model discloses an on the other hand, different hydraulic fluid ports through control solenoid directional valve are opened, can realize that the front wheel turns to, centripetal to and the wedge turns to, can make the flexibility of vehicle improve greatly through turning to of preceding, the opposite angle of rear wheel, more adapt to turning to of narrow and small space, can make the vehicle approximate parallel state remove through turning to of preceding, the same angle of rear wheel, can accomplish more vehicle travel states.
Drawings
Fig. 1 is a schematic diagram of the hydraulic system of the present invention.
1. The hydraulic oil tank comprises a hydraulic oil tank 2, an oil absorption filter 3, an oil pump 4, an overflow valve 5, a high-pressure filter 6, a priority valve 7, a steering gear 8, an electromagnetic directional valve 9, a hydraulic lock 10, a rear axle steering oil cylinder 11 and a front axle steering oil cylinder.
Detailed Description
The present invention will be further explained by way of examples with reference to the accompanying drawings.
The utility model discloses a full hydraulic steering system of concrete mixer truck and method in metal mine pit can realize the four-wheel steering of trucd mixer, can use the whole chassis of rigidity, and then can shorten whole car length for whole car trafficability characteristic reinforcing can turn to in narrow and small space in the pit.
As shown in fig. 1, the hydraulic steering system comprises a hydraulic oil tank 1 for supplying hydraulic oil for steering power, an oil suction filter 2 for filtering and removing impurities from the hydraulic oil, an oil pump 3 for pumping the hydraulic oil, a high pressure filter 5 for secondarily filtering the hydraulic oil, and an overflow valve 4 installed on a connecting oil path between the oil pump 3 and the hydraulic oil tank 1.
After passing through the oil suction filter 2, the oil pump 3 and the high pressure filter 5 one by one, the hydraulic oil from the hydraulic oil tank 1 enters the priority valve 6 through the port P of the priority valve 6, and when the mixer truck needs to turn, the hydraulic oil is preferentially discharged from the port CF of the priority valve 6 to enter the steering gear 7. Generally, according to domestic driving habits, hydraulic oil entering the steering gear 7 is discharged from an L port of the steering gear 7 and then enters the electromagnetic directional valve 8, wherein the electromagnetic directional valve 8 has four oil ports, namely a first oil port, a second oil port, a third oil port and an oil inlet, the oil inlet is communicated with the L port of the oil discharged from the steering gear 7, the first oil port is connected with the front axle steering cylinder 11 through a front hydraulic oil path, and the second oil port and the third oil port are respectively connected with the rear axle steering cylinder 10 through a rear hydraulic oil path.
Specifically, the second oil port is connected with the left position of the rear axle steering cylinder 10 through the rear hydraulic oil path, the third oil port is connected with the right position of the rear axle steering cylinder 10 through the rear hydraulic oil path, and the hydraulic lock 9 is installed on the rear hydraulic oil path, so that the left and right positions of the rear axle steering cylinder 10 can be conveniently changed in the in-and-out direction, the hydraulic oil pressure of the rear axle steering cylinder 10 can be maintained, and reliable steering is ensured.
The hydraulic oil discharged from the front axle steering cylinder 11 enters the oil return port of the steering gear 7, i.e., typically the R port of the steering gear. In the embodiment of the utility model, the first oil port, the second oil port and the third oil port of the electromagnetic directional valve 8 can be oil outlets as required, when the first oil port is an oil outlet, the vehicle realizes that the front wheel turns; when the second oil port or the third oil port is an oil outlet, the vehicle realizes four-wheel steering, and specifically, the hydraulic oil pressure when the first oil port is the oil outlet is half of that of the second oil port or the third oil port. That is, the steering pressure in four-wheel steering is twice that in front-wheel steering to achieve accurate control of the braking action, and specifically, a steering pressure gauge is installed at the P port position of the steering gear 7 to monitor the hydraulic oil pressure.
The utility model discloses a full hydraulic pressure method that turns to of concrete mixer truck in pit in metal mine, through the position of control driving knob switch, the different positions of steerable electromagnetic directional valve 8 get electric, and then can realize that the front wheel turns to, centripetal steering and the wedge turns to the mode that turns to of these three kinds of differences. Wherein, the front wheel steering is the front wheel active steering, and the rear wheel driven steering; the centripetal steering is that the angle of the front wheel for active steering is opposite to the angle of the rear wheel for active steering; the wedge steering is that the angle of the front wheel active steering is the same as the angle of the rear wheel active steering.
When the mixer truck is steered by the front wheels: the control driver's cabin knob switch is in the meso position, hydraulic oil flows out the back from hydraulic tank 1, successively through oil absorption filter 2 under the effect of oil pump 3, specifically can select the gear pump for use, flow to the P mouth of priority valve 6 through the pipeline, get into steering gear 7 after the CF hydraulic fluid port of priority valve 6 discharges, get into electromagnetic directional valve 8 after the L position of steering gear 7 discharges, the first hydraulic fluid port of electromagnetic directional valve 8 opens this moment, hydraulic oil gets into front axle steering hydro-cylinder 11 through first hydraulic fluid port, later discharge to the R position of steering gear 7 from the opposite side of front axle steering hydro-cylinder 11, accomplish the front wheel and turn to.
When the mixer truck performs centripetal steering: the driving knob switch is controlled to be in a left position, the left position of the electromagnetic directional valve 8 is electrified at the moment, and the third oil port is opened. Similarly to the front wheel steering, the hydraulic oil 1 will be discharged from the L position of the steering gear 7 to the electromagnetic directional valve 8, except that the hydraulic oil is discharged from the third oil port of the electromagnetic directional valve 8, passes through the hydraulic lock 9, enters the right position of the rear axle steering cylinder 10, then is discharged from the left position of the rear axle steering cylinder 10, passes through the hydraulic lock 9, enters from the second oil port of the electromagnetic directional valve 8, then is discharged from the first oil port of the electromagnetic directional valve 8 to the front axle steering cylinder 11, and finally is discharged from the other side of the front axle steering cylinder 11 to the R position of the steering gear 7, at this time, the steering angles of the front and rear steering drive axles are opposite, and the centripetal steering is completed.
When the mixer truck makes a wedge-shaped turn: the driving knob switch is controlled to be in the right position, the right position of the electromagnetic directional valve 8 is electrified at the moment, and the second oil port is opened. Different from centripetal steering, hydraulic oil is discharged from a second oil port of the electromagnetic directional valve 8, enters a left position of a rear axle steering oil cylinder 10 through a hydraulic lock 9, is then discharged from a right position of the rear axle steering oil cylinder 10, still enters a third oil port of the electromagnetic directional valve 8 through the hydraulic lock 9, is then discharged to a front axle steering oil cylinder 11 from a first oil port of the electromagnetic directional valve 8, and is finally discharged to an R position of a steering gear 7 from the other side of the front axle steering oil cylinder 11, and at the moment, the front and rear steering drive axles have the same steering angle, and wedge steering is completed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a full hydraulic steering system of concrete mixer truck in pit in metal mine, includes hydraulic tank (1), its characterized in that: the hydraulic oil tank (1) is connected with a steering gear (7) through a hydraulic oil way, and an oil outlet of the steering gear (7) is connected with an electromagnetic directional valve (8) through a hydraulic oil way;
a first oil port of the electromagnetic directional valve (8) is connected with a front axle steering oil cylinder (11) through a front hydraulic oil path, and an oil outlet of the front axle steering oil cylinder (11) is connected with an oil return port of the steering gear (7) through a hydraulic oil path;
and a second oil port and a third oil port of the electromagnetic directional valve (8) are respectively connected with a rear axle steering oil cylinder (10) through a rear hydraulic oil way, and a pressure maintaining piece is arranged on the rear hydraulic oil way.
2. The full hydraulic steering system of the metal mine underground concrete mixer truck as claimed in claim 1, wherein: a second oil port of the electromagnetic directional valve (8) is connected with the left position of the rear axle steering oil cylinder (10) through a rear hydraulic oil path, a third oil port of the electromagnetic directional valve (8) is connected with the right position of the rear axle steering oil cylinder (10) through a rear hydraulic oil path, and the pressure maintaining piece is a hydraulic lock (9).
3. The full hydraulic steering system of the metal mine underground concrete mixer truck as claimed in claim 1 or 2, wherein: the hydraulic oil pressure of the oil outlet of the electromagnetic directional valve (8) of the first oil port is half of that of the oil outlet of the electromagnetic directional valve (8) of the second oil port or the third oil port.
4. The full hydraulic steering system of the metal mine underground concrete mixer truck as claimed in claim 3, wherein: a priority valve (6) is arranged on a hydraulic oil path connecting the hydraulic oil tank (1) and the steering gear (7), and a CF oil port of the priority valve (6) is connected with the steering gear (7) through the hydraulic oil path.
5. The full hydraulic steering system of the metal mine underground concrete mixer truck as claimed in claim 1, wherein: the hydraulic oil tank (1) is provided with an oil absorption filter (2), an oil pump (3), a high-pressure filter (5) and a priority valve (6) in sequence on a hydraulic oil path connected with a steering gear (7), and an overflow valve (4) is arranged between the oil pump (3) and the hydraulic oil tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920564366.XU CN209814088U (en) | 2019-04-24 | 2019-04-24 | Full-hydraulic steering system of underground concrete mixer truck for metal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920564366.XU CN209814088U (en) | 2019-04-24 | 2019-04-24 | Full-hydraulic steering system of underground concrete mixer truck for metal mine |
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| Publication Number | Publication Date |
|---|---|
| CN209814088U true CN209814088U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920564366.XU Active CN209814088U (en) | 2019-04-24 | 2019-04-24 | Full-hydraulic steering system of underground concrete mixer truck for metal mine |
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| CN (1) | CN209814088U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109911009A (en) * | 2019-04-24 | 2019-06-21 | 莱州亚通重型装备有限公司 | A kind of metal mine underground concrete mixer truck all hydraulic pressure steering-gear and method |
| CN111891215A (en) * | 2020-07-15 | 2020-11-06 | 哈尔滨哈铁装备制造有限公司 | Steering system of road-rail dual-purpose vehicle |
-
2019
- 2019-04-24 CN CN201920564366.XU patent/CN209814088U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109911009A (en) * | 2019-04-24 | 2019-06-21 | 莱州亚通重型装备有限公司 | A kind of metal mine underground concrete mixer truck all hydraulic pressure steering-gear and method |
| CN109911009B (en) * | 2019-04-24 | 2024-06-25 | 莱州亚通重型装备有限公司 | Full-hydraulic steering system and method for underground metal mine concrete mixer truck |
| CN111891215A (en) * | 2020-07-15 | 2020-11-06 | 哈尔滨哈铁装备制造有限公司 | Steering system of road-rail dual-purpose vehicle |
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