CN217539154U

CN217539154U - Walking anti-slip hydraulic system and engineering vehicle

Info

Publication number: CN217539154U
Application number: CN202221671022.7U
Authority: CN
Inventors: 何海涛; 袁栋; 谭锋
Original assignee: Hunan Sanyi Huayuan Machinery Co
Current assignee: Hunan Sanyi Huayuan Machinery Co
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-10-04
Anticipated expiration: 2032-06-29

Abstract

The utility model relates to a hydraulic pressure antiskid technical field especially relates to a hydraulic system that skids is prevented in walking and prevent skidding hydraulic system's engineering vehicle including this walking. The utility model discloses a hydraulic system that skids is prevented in walking, first walking motor and first on-off valve are established ties, and first walking motor and second on-off valve are parallelly connected, switch on at first on-off valve, when the disconnection of second on-off valve, the pump of traveling provides pressure oil for first walking motor, when first walking motor skids, the disconnection of first on-off valve, the second on-off valve switches on, the pressure oil supply that cuts off first walking motor from this makes first walking motor be in free state, thereby first walking motor can follow-up, the motor of skidding is in free follow-up state, for prior art, can reduce the motor of skidding and become the energy consumption that the load even lock brought, thereby obtain better energy-conserving effect. Generally, the utility model discloses realize first walking motor's anti-skidding function, simple structure, and energy-conserving effectual.

Description

Walking anti-slip hydraulic system and engineering vehicle

Technical Field

The utility model relates to a hydraulic pressure antiskid technical field especially relates to a hydraulic system that skids is prevented in walking and prevent hydraulic system's that skids engineering vehicle including this walking.

Background

At present, two types of anti-skidding single-steel-wheel road rollers with double driving in the industry are mainly used, namely electronic anti-skidding and hydraulic anti-skidding. The electronic antiskid is that the front and rear running motors are all electric proportional motors, and the displacement of the front and rear motors is adjusted in real time under the control of the whole machine controller, so that the front and rear driving force is changed, and the skidding wheels do not slide any more. The hydraulic antiskid is to add a flow distributing and collecting valve on the road behind the running pump, then to distribute the flow to the front and rear running motors, and to forcibly distribute the flow to the front and rear motors by the valve according to the proportion, so as to change the driving force of the front and rear motors, thereby eliminating the skid.

Although the electronic antiskid function and the hydraulic antiskid function can play an antiskid role, in the operation process, the power system always provides driving force for the slipping motor, however, the slipping motor is in a slipping state, and the slipping motor may not provide driving force for the whole vehicle, but rather becomes the load of the whole vehicle and even locks, so that the energy-saving effect of the electronic antiskid function and the hydraulic antiskid function is improved.

SUMMERY OF THE UTILITY MODEL

The not enough to prior art, one of the purposes of the utility model provides a hydraulic system that skids is prevented in walking, and this hydraulic system that skids is prevented in walking not only can play skid-proof effect, can obtain better energy-conserving effect moreover.

The second purpose of the utility model is to provide an engineering vehicle of installing above-mentioned hydraulic system that skids is prevented in walking.

The utility model provides a walking anti-slip hydraulic system, which comprises a running pump, a first walking motor, a first on-off valve, a second on-off valve and a first pipeline, wherein one end of the running pump is connected with one end of the first pipeline, and the other end of the running pump is connected with the other end of the first pipeline; the first walking motor and the first on-off valve are connected in series on the first pipeline, and the first walking motor is further connected in parallel with the second on-off valve.

The utility model discloses a hydraulic system skids is prevented in walking, first walking motor and first on-off valve are established ties, and first walking motor and second on-off valve are parallelly connected, switch on at first on-off valve, when second on-off valve breaks, the pump of traveling provides pressure oil for first walking motor, when first walking motor skids, first on-off valve breaks, the second on-off valve switches on, thereby cut off first walking motor's pressure oil supply and make first walking motor be in free state, thereby first walking motor can follow-up, on the one hand, when the walking hydraulic system that skids of this application is applied to the engineering vehicle who has a plurality of walking motors, the pump of traveling can provide hydraulic oil for these a plurality of walking motors, after cutting off first walking motor's pressure oil supply, the hydraulic oil of the pump of traveling can all be supplied to the motor that does not appear skidding, make the power of the hydraulic system that skids of drive walking switch to the motor that does not skid by the motor that skids, thereby provide bigger moment for the motor that does not skid, and then make the equipment equipped with this walking hydraulic system that skids to go out as early as far as possible, on the one hand is in the energy-saving and skids, thereby the energy consumption reduction motor that can be in the current free state of following up reduces, thereby it skids, thereby, the load of the free state of getting, thereby, it brings. Generally, the utility model discloses realize first walking motor's anti-skidding function, simple structure, the cost is controllable, and energy-conserving effectual, is fit for using widely.

According to the utility model provides a pair of hydraulic system that skids is prevented in walking, including second walking motor and second pipeline, the second pipeline with first pipeline is parallelly connected, the one end of the pump that traveles with the one end of second pipeline is connected, the other end of the pump that traveles with the other end of second pipeline is connected, second walking motor is located on the second pipeline.

According to the utility model provides a pair of hydraulic system that skids is prevented in walking, including the disconnected valve of third tee bend and the disconnected valve of fourth pass, second walking motor with the disconnected valve of third tee bend establish ties in on the second pipeline, just second walking motor still with the disconnected valve of fourth pass is parallelly connected.

According to the utility model provides a pair of hydraulic system that skids is prevented in walking, including inclination sensor and controller, inclination sensor first on-off valve with the second on-off valve respectively with the controller is connected, inclination sensor is used for detecting the front and back inclination of automobile body, the controller is used for the basis inclination sensor's inclination signal control first on-off valve with the action of second on-off valve.

According to the utility model provides a pair of hydraulic system that skids is prevented in walking still includes controller and speed sensor, speed sensor is used for acquireing first walking motor with the rotational speed signal of second walking motor, speed sensor first break-make valve the second break-make valve the third break-make valve with the fourth break-make valve respectively with the controller is connected, the controller be used for the basis speed sensor's rotational speed signal control first break-make valve the second break-make valve the third break-make valve with the fourth break-make valve action.

According to the utility model provides a pair of hydraulic system that skids is prevented in walking, first on-off valve the second on-off valve is the solenoid valve.

According to the utility model provides a pair of hydraulic system that skids is prevented in walking, the third pass break valve with the fourth pass break valve is the solenoid valve.

The utility model also provides an engineering vehicle, include: the walking anti-slip hydraulic system according to any one of the above aspects.

Because the engineering vehicle is provided with the walking anti-slip hydraulic system, the engineering vehicle has all the technical effects of the walking anti-slip hydraulic system, and the details are not repeated.

According to the utility model provides a pair of engineering vehicle, engineering vehicle is road roller or leveler or tipper or trucd mixer.

According to the utility model provides a pair of engineering vehicle, engineering vehicle is single steel wheel road roller, single steel wheel road roller is including setting up at the anterior steel wheel running gear of automobile body and setting up the tire running gear at the automobile body rear portion, first travel motor with steel wheel running gear connects.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for the embodiments or the prior art descriptions, and obviously, the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is one of the frame structure schematic diagrams of the walking anti-slip hydraulic system provided by the present invention;

fig. 2 is one of the frame structure diagrams of the walking anti-slip hydraulic system provided by the present invention;

fig. 3 is one of the frame structure diagrams of the walking anti-slip hydraulic system provided by the present invention;

fig. 4 is one of the frame structure schematic diagrams of the walking anti-slip hydraulic system provided by the present invention;

fig. 5 is one of the frame structure schematic diagrams of the walking anti-slip hydraulic system provided by the present invention;

fig. 6 is one of the frame structure schematic diagrams of the walking anti-slip hydraulic system provided by the present invention;

fig. 7 is a schematic diagram of a frame structure of a construction vehicle provided by the present invention;

reference numerals are as follows:

1: a travel pump; 2: a first travel motor; 3: a first on-off valve;

4: a second on-off valve; 5: a first pipeline; 6: a second travel motor;

7: a second pipeline; 8: a third shutoff valve; 9: a fourth shutoff valve;

10: a tilt sensor; 11: a controller; 12: a rotation speed sensor.

Detailed Description

In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise. In the embodiment of the present application, all directional indicators (such as upper, lower, left, right, front, rear, top, bottom … …) are used only for explaining the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed correspondingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Furthermore, reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The following describes the anti-slip hydraulic system and the engineering vehicle for walking according to the present invention with reference to fig. 1 to 7.

As shown in fig. 1 to 6, the present embodiment provides a walking anti-slip hydraulic system, which includes a running pump 1, a first walking motor 2, a first on-off valve 3, a second on-off valve 4 and a first pipeline 5, wherein one end of the running pump 1 is connected to one end of the first pipeline 5, and the other end of the running pump 1 is connected to the other end of the first pipeline 5; the first travel motor 2 and the first on-off valve 3 are connected in series on a first pipeline 5, and the first travel motor 2 is also connected in parallel with the second on-off valve 4.

As shown in fig. 1 and 2 and fig. 4 and 5, the first travel motor 2 may be a front travel mechanism motor or a rear travel mechanism motor. The travel pump 1 is used to supply pressure oil to the first travel motor 2.

When the first on-off valve 3 is on and the second on-off valve 4 is off, the travel pump 1 supplies pressure oil to the first travel motor 2, and at this time, the first travel motor 2 can supply driving force to the entire vehicle. When the first walking motor 2 slips, the first on-off valve 3 is disconnected, and the second on-off valve 4 is switched on, so that the hydraulic branch where the first walking motor 2 is located is cut off, and the first walking motor 2 is in a free state, when the walking anti-slip hydraulic system is applied to an engineering vehicle with a plurality of walking motors, the running pump can provide hydraulic oil for the plurality of walking motors, after the pressure oil supply of the first walking motor 2 is cut off, all the hydraulic oil of the running pump 1 can be supplied to the motor which does not slip, so that the power for driving the walking anti-slip hydraulic system is switched from the slipping motor to the non-slipping motor, on one hand, a larger torque can be provided for the non-slipping motor, and further equipment provided with the walking anti-slip hydraulic system can go out of a slipping road section as soon as possible, on the other hand, the slipping motor is in a free following state, and compared with the prior art, the energy consumption caused by the slipping motor becoming a load or even locking can be reduced.

The utility model discloses only need on the traveling system basis of the many motors of conventional single pump, two on-off valves of walking motor branch road facial make-up can realize anti-skidding function, simple structure, and the cost is controllable, is fit for using widely.

From the above, in the anti-slip hydraulic system for traveling of the present invention, the first traveling motor 2 and the first on-off valve 3 are connected in series, and the first traveling motor 2 and the second on-off valve 4 are connected in parallel, when the first on-off valve 3 is turned on and the second on-off valve 4 is turned off, the traveling pump 1 supplies the pressure oil to the first traveling motor 2, and when the first traveling motor 2 slips, the first on-off valve 3 is turned off and the second on-off valve 4 is turned on, thereby cutting off the pressure oil supply to the first traveling motor 2 and allowing the first traveling motor 2 to be in a free state, so that the first traveling motor 2 can follow up, and on the one hand, when the anti-slip hydraulic system for traveling of the present invention is applied to an engineering vehicle having a plurality of traveling motors, the running pump can provide hydraulic oil for the plurality of running motors, after the pressure oil supply of the first running motor 2 is cut off, the hydraulic oil of the running pump 1 can be completely supplied to the motor which does not slip, so that the power for driving the running anti-slip hydraulic system is switched from the slipping motor to the non-slipping motor, a larger torque is provided for the non-slipping motor, and further equipment provided with the running anti-slip hydraulic system can leave a slipping road section as soon as possible. Generally, the utility model discloses realize first walking motor 2's anti-skidding function, simple structure, the cost is controllable, and energy-conserving effectual, is fit for using widely.

It is specifically optional, as shown in fig. 4, 5 and 6, the utility model discloses a hydraulic system that skids is prevented in walking includes second walking motor 6 and second pipeline 7, and second pipeline 7 is parallelly connected with first pipeline 5, and the one end of the pump 1 that traveles is connected with the one end of second pipeline 7, and the other end of the pump 1 that traveles is connected with the other end of second pipeline 7, and second walking motor 6 is located on second pipeline 7. As shown in fig. 1 and 4, when the first travel motor 2 is a front travel mechanism motor, the second travel motor 6 is a rear travel mechanism motor; when the first on-off valve 3 is switched on and the second on-off valve 4 is switched off, the running pump 1 simultaneously provides pressure oil for the first running motor 2 and the second running motor 6, and at the moment, the vehicle is driven in a double-driving mode; when the first on-off valve 3 is turned off and the second on-off valve 4 is turned on, the traveling pump 1 supplies pressure oil to the second traveling motor 6, and the first traveling motor 2 is in a free follow-up state, at which time, the vehicle is driven backward. Accordingly, as shown in fig. 2 and 5, when the first travel motor 2 is a rear travel mechanism motor, the second travel motor 6 is a front travel mechanism motor, and when the first on-off valve 3 is turned on and the second on-off valve 4 is turned off, the travel pump 1 simultaneously supplies pressure oil to the first travel motor 2 and the second travel motor 6, and at this time, the vehicle is driven in a double-drive manner; when the first on-off valve 3 is turned off and the second on-off valve 4 is turned on, the traveling pump 1 supplies pressure oil to the second traveling motor 6, and the first traveling motor 2 is in a free follow-up state, at which time, the vehicle is driving in the forward direction, thereby achieving free switching between the double drive and the single drive. Specifically, according to operating condition, the vehicle can switch between two drives and the single-wheel drive, just uses the single-wheel drive at the operating mode that the load is little or there is the motor that skids, just uses two drives at the operating mode that the load is big, when skidding, realizes two freely switching of driving and the single-wheel drive, and is energy-conserving effectual.

It is specific optional, as shown in fig. 3 and 6, the utility model discloses a hydraulic system that skids is prevented in walking includes second walking motor 6, second pipeline 7, third disconnected valve 8 and fourth disconnected valve 9, second pipeline 7 is parallelly connected with first pipeline 5, the one end of the pump 1 of traveling is connected with the one end of second pipeline 7, the other end of the pump 1 of traveling is connected with the other end of second pipeline 7, second walking motor 6 and third disconnected valve 8 establish ties on second pipeline 7, and second walking motor 6 still parallelly connected with fourth disconnected valve 9. Wherein, when the first traveling motor 2 is a front traveling mechanism motor, the second traveling motor 6 is a rear traveling mechanism motor; when the first on-off valve 3 is switched on, the second on-off valve 4 is switched off, the third on-off valve 8 is switched on, and the fourth on-off valve 9 is switched off, the running pump 1 simultaneously provides pressure oil for the first running motor 2 and the second running motor 6, and at the moment, the vehicle is driven in a double-driving mode; when the first on-off valve 3 is disconnected, the second on-off valve 4 is connected, the third on-off valve 8 is connected, and the fourth on-off valve 9 is disconnected, the running pump 1 provides pressure oil for the second running motor 6, the first running motor 2 is in a free follow-up state, and at the moment, the vehicle is driven backwards; when the first on-off valve 3 is on, the second on-off valve 4 is off, the third on-off valve 8 is off, and the fourth on-off valve 9 is on, the travel pump 1 supplies pressure oil to the first travel motor 2, and at this time, the vehicle is driving in front. Correspondingly, when the first travel motor 2 is a rear travel mechanism motor, the second travel motor 6 is a front travel mechanism motor; when the first on-off valve 3 is switched on, the second on-off valve 4 is switched off, the third on-off valve 8 is switched on, and the fourth on-off valve 9 is switched off, the running pump 1 simultaneously provides pressure oil for the first running motor 2 and the second running motor 6, and at the moment, the vehicle is driven in a double-driving mode; when the first on-off valve 3 is disconnected, the second on-off valve 4 is connected, the third on-off valve 8 is connected, and the fourth on-off valve 9 is disconnected, the running pump 1 supplies pressure oil to the second running motor 6, and the first running motor 2 is in a free follow-up state, at this time, the vehicle is in a forerunner mode; when the first on-off valve 3 is on, the second on-off valve 4 is off, the third on-off valve 8 is off, and the fourth on-off valve 9 is on, the traveling pump 1 supplies pressure oil to the first traveling motor 2, and at this time, the vehicle is driven backward, thereby realizing free switching of double drive, forward drive, and backward drive. Specifically, according to actual working conditions, the vehicle can be switched among double-drive, front-drive and rear-drive, the front-drive or rear-drive is used under the working condition that the load is small or a slipping motor exists, the double-drive is used under the working condition that the load is large, the free switching among the double-drive, the front-drive and the rear-drive is realized, and the energy-saving effect is good.

Preferably, as shown in fig. 4, 5 and 6, the vehicle body control device comprises a tilt sensor 10 and a controller 11, wherein the tilt sensor 10, the first on-off valve 3 and the second on-off valve 4 are respectively connected with the controller 11, the tilt sensor 10 is used for detecting the front and rear tilt angles of the vehicle body, and the controller 11 is used for controlling the first on-off valve 3 and the second on-off valve 4 to operate according to a tilt angle signal of the tilt sensor 10. In a specific embodiment, when the inclination angle sensor 10 detects that the front and rear inclination angle of the vehicle body is greater than or equal to 30%, it indicates that the vehicle is climbing, and belongs to a working condition with a large load, the controller 11 controls the first on-off valve 3 to be on, the second on-off valve 4 to be off, the vehicle is switched from single drive to double drive, so that the climbing capability of the vehicle is improved, when the inclination angle sensor 10 detects that the front and rear inclination angle of the vehicle body is less than 30%, it indicates that the load of the vehicle is small, and the vehicle is switched between double drive and single drive according to the actual load condition and the motor slip condition. As shown in fig. 6, when the utility model discloses a hydraulic system that skids is prevented in walking still includes second walking motor 6, second pipeline 7, third on-off valve 8 and fourth on-off valve 9, inclination sensor 10, first on-off valve 3, second on-off valve 4, third on-off valve 8 and fourth on-off valve 9 are connected with controller 11 respectively, inclination sensor 10 is used for detecting the front and back inclination of automobile body, controller 11 is used for controlling first on-off valve 3, second on-off valve 4, third on-off valve 8 and the action of fourth on-off valve 9 according to inclination sensor 10's inclination signal. In a specific embodiment, when the tilt angle sensor 10 detects that the front and rear tilt angle of the vehicle body is greater than or equal to 30%, it indicates that the vehicle is climbing, and belongs to a working condition with a large load, the controller 11 controls the first on-off valve 3 to be switched on, the second on-off valve 4 to be switched off, the third on-off valve 8 to be switched on, the fourth on-off valve 9 to be switched off, the vehicle is switched from single drive to double drive, so that the climbing capability of the vehicle is improved, when the tilt angle sensor 10 detects that the front and rear tilt angle of the vehicle body is less than 30%, it indicates that the load of the vehicle is small, and the vehicle is switched between double drive and single drive according to the actual load condition and the motor slip condition.

Preferably, as shown in fig. 4, 5 and 6, the traveling device further includes a controller 11 and a rotation speed sensor 12, the rotation speed sensor 12 is configured to obtain rotation speed signals of the first traveling motor 2 and the second traveling motor 6, the rotation speed sensor 12, the first on-off valve 3, the second on-off valve 4, the third on-off valve 8 and the fourth on-off valve 9 are respectively connected to the controller 11, and the controller 11 is configured to control the first on-off valve 3, the second on-off valve 4, the third on-off valve 8 and the fourth on-off valve 9 to operate according to the rotation speed signal of the rotation speed sensor 12. The controller 11 can determine whether the motor is in a slipping state according to the rotation speed signal of the motor, so that the double-drive and the single-drive can be switched according to the actual load condition and the motor slipping condition.

Specifically, optionally, the first on-off valve 3 and the second on-off valve 4 are electromagnetic valves, so that the controller 11 can control the first on-off valve 3 and the second on-off valve 4 to act conveniently. Similarly, the third shut-off valve 8 and the fourth shut-off valve 9 are solenoid valves, which facilitates the controller 11 to control the third shut-off valve 8 and the fourth shut-off valve 9 to operate. The controller 11 may be a single chip microcomputer or a PLC programmable controller 11.

To sum up, the utility model discloses a hydraulic system skids is prevented in walking, first walking motor 2 and first on-off valve 3 are established ties, and first walking motor 2 and second on-off valve 4 are parallelly connected, switch on at first on-off valve 3, when second on-off valve 4 breaks off, pump 1 of traveling provides pressure oil for first walking motor 2, when first walking motor 2 skids, first on-off valve 3 breaks off, second on-off valve 4 switches on, thereby cut off the pressure oil supply of first walking motor 2 and make first walking motor 2 be in the free state, thereby first walking motor 2 can follow-up, on the one hand, when the walking hydraulic system that skids of this application is applied to the engineering vehicle that has a plurality of walking motors, the pump of traveling can provide hydraulic oil for these a plurality of walking motors, after cutting off the pressure oil supply of first walking motor 2, the hydraulic oil of pump 1 of traveling can all be supplied to the motor that does not appear skidding, make the power of driving skidded hydraulic system prevent to switch to the motor that does not skid by the motor that skids as soon as possible, thereby provide the motor that more big torque to make the motor of traveling reduce the energy-saving of skidded for the current road section of following and skidding, thereby it reduces the energy-saving motor that can skid to skid. Generally, the utility model discloses realize first walking motor 2's anti-skidding function, simple structure, the cost is controllable, and energy-conserving effectual, is fit for using widely.

In addition, as shown in fig. 7, the utility model also provides an engineering vehicle, including the automobile body, be equipped with on the automobile body like any one of above-mentioned each scheme hydraulic system that skids is prevented in walking. Since the engineering vehicle shown in this embodiment includes the walking anti-skid hydraulic system, and the specific structure of the walking anti-skid hydraulic system refers to the above-mentioned embodiment, the engineering vehicle shown in this embodiment includes all the technical solutions of the above-mentioned embodiment, and at least has all the beneficial effects brought by all the technical solutions of the above-mentioned embodiment, and details are not repeated here.

The engineering vehicle shown in this embodiment may be a road roller, a land leveler, a dump truck, a mixer truck, and the like, and is not limited specifically herein.

In a specific embodiment, the engineering vehicle shown in this embodiment is a single steel wheel road roller, the single steel wheel road roller includes a steel wheel traveling mechanism disposed at the front of a vehicle body and a tire traveling mechanism disposed at the rear of the vehicle body, the first traveling motor 2 is connected to the steel wheel traveling mechanism, when the steel wheel traveling mechanism slips, the first on-off valve 3 is turned off, and the second on-off valve 4 is turned on, so that the pressure oil supply of the first traveling motor 2 is cut off and the first traveling motor 2 and the steel wheel traveling mechanism are in a free state, and the first traveling motor 2 and the steel wheel traveling mechanism can follow up.

The basic principles of the present invention have been described above with reference to specific embodiments, but it should be noted that advantages, effects, etc. mentioned in the present invention are only examples and not limitations, and these advantages, effects, etc. should not be considered as necessarily possessed by various embodiments of the present invention. Furthermore, the foregoing disclosure of specific details is provided for purposes of illustration and understanding only, and is not intended to be limiting, since the present invention will be described in detail with reference to the following detailed description.

The block diagrams of devices, apparatuses, devices, and systems according to the present invention are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, and configurations have to be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. As used herein, the words "or" and "refer to, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to". It should also be noted that in the apparatus and devices of the present invention, the components may be disassembled and/or reassembled. These decompositions and/or recombinations are to be regarded as equivalents of the present invention.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a hydraulic system that skids is prevented in walking which characterized in that:

the device comprises a running pump (1), a first walking motor (2), a first on-off valve (3), a second on-off valve (4) and a first pipeline (5), wherein one end of the running pump (1) is connected with one end of the first pipeline (5), and the other end of the running pump (1) is connected with the other end of the first pipeline (5);

the first traveling motor (2) and the first on-off valve (3) are connected in series on the first pipeline (5), and the first traveling motor (2) is further connected in parallel with the second on-off valve (4).

2. The walking anti-skid hydraulic system according to claim 1, characterized in that:

including second walking motor (6) and second pipeline (7), second pipeline (7) with first pipeline (5) are parallelly connected, the one end of pump (1) of traveling with the one end of second pipeline (7) is connected, the other end of pump (1) of traveling with the other end of second pipeline (7) is connected, second walking motor (6) are located on the second pipeline (7).

3. The walking anti-skid hydraulic system as claimed in claim 2, wherein: the traveling device comprises a third breaking valve (8) and a fourth breaking valve (9), wherein the second traveling motor (6) and the third breaking valve (8) are connected in series on a second pipeline (7), and the second traveling motor (6) is connected with the fourth breaking valve (9) in parallel.

4. The walking anti-skid hydraulic system as claimed in claim 2, wherein:

the device is characterized by comprising an inclination angle sensor (10) and a controller (11), wherein the inclination angle sensor (10), a first on-off valve (3) and a second on-off valve (4) are respectively connected with the controller (11), the inclination angle sensor (10) is used for detecting the front and back inclination angles of a vehicle body, and the controller (11) is used for controlling the first on-off valve (3) and the second on-off valve (4) to act according to an inclination angle signal of the inclination angle sensor (10).

5. The walking anti-skid hydraulic system as claimed in claim 3, wherein: still include controller (11) and speed sensor (12), speed sensor (12) are used for acquireing first walking motor (2) with the rotational speed signal of second walking motor (6), speed sensor (12) first break-make valve (3) second break-make valve (4) third break-make valve (8) with fourth break-make valve (9) respectively with controller (11) are connected, controller (11) are used for the basis rotational speed signal control of speed sensor (12) first break-make valve (3) second break-make valve (4) third break-make valve (8) with fourth break-make valve (9) action.

6. The walking anti-skid hydraulic system according to any one of claims 1 to 5, characterized in that: the first on-off valve (3) and the second on-off valve (4) are electromagnetic valves.

7. The walking anti-skid hydraulic system as claimed in claim 3 or 5, wherein: the third three-way stop valve (8) and the fourth four-way stop valve (9) are electromagnetic valves.

8. An engineering vehicle, comprising a vehicle body, wherein the vehicle body is provided with a walking anti-slip hydraulic system according to any one of claims 1 to 7.

9. The work vehicle of claim 8, wherein: the engineering vehicle is a road roller or a land leveler or a dump truck or a mixer truck.

10. The work vehicle according to claim 8 or 9, characterized in that: the engineering vehicle is a single-steel-wheel road roller, the single-steel-wheel road roller comprises a steel wheel travelling mechanism arranged at the front part of a vehicle body and a tire travelling mechanism arranged at the rear part of the vehicle body, and the first travelling motor (2) is connected with the steel wheel travelling mechanism.