CN211898611U - Soil spade system for rescue vehicle and rescue vehicle - Google Patents
Soil spade system for rescue vehicle and rescue vehicle Download PDFInfo
- Publication number
- CN211898611U CN211898611U CN201922359533.XU CN201922359533U CN211898611U CN 211898611 U CN211898611 U CN 211898611U CN 201922359533 U CN201922359533 U CN 201922359533U CN 211898611 U CN211898611 U CN 211898611U
- Authority
- CN
- China
- Prior art keywords
- valve
- oil cylinder
- oil
- flow path
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The present disclosure relates to a dozer blade system for a rescue vehicle, including: the dozer blade is arranged on an automobile chassis of the rescue vehicle; the oil cylinder assembly is used for controlling the operation form of the dozer blade; the sensing assembly is used for measuring the pressure and displacement of the oil cylinder assembly; and the hydraulic assembly is connected with the oil cylinder assembly and the sensing assembly, and can control oil supply to the oil cylinder assembly according to the measuring result of the sensing assembly so as to adjust the operation form of the dozer blade. According to this dozer blade system that this disclosed embodiment provided, can be applicable to vehicle chassis type dozer blade to dispose two kinds of manual and automatic mode, applicable multiple different operating modes, have that the operating efficiency is high, control simple and reliable, the advantage of real-time supervision spiller operation form and load size.
Description
Technical Field
The disclosure relates to the field of engineering machinery, in particular to a dozer blade system for a rescue vehicle and the rescue vehicle.
Background
When natural disasters such as earthquakes, floods, landslides and debris flows occur, a rescue vehicle is required to arrive at a rescue site at the first time to carry out various rescue operations such as road rush-through, stone cleaning, rescue of buried people, steel bar shearing and ruin cleaning. Based on the above, the rescue vehicle is mostly provided with a high-mobility cross-country vehicle chassis, and meanwhile, the vehicle chassis is provided with some operation mechanisms to carry out necessary rescue work. In various rescue operation requirements, the road emergency can ensure that subsequent rescue equipment can smoothly enter a disaster site, and the rescue operation can be quickly and effectively carried out, so that the road emergency is the rescue operation type with the highest priority.
Aiming at the operation requirement of road rush-clearing, the dozer blade is the most basic and effective operation tool for realizing the dozer blade. At present, most of the dozer blades are installed on special dozer, the dozer is provided with a crawler chassis, the maneuverability is poor, the operation working condition is single, the control on the dozer blades is simple, and the power is mostly adopted to control the soil cutting depth and the soil cutting angle of the dozer blades. It can be seen that the existing blade is difficult to be directly transferred from the track base plate to the tire chassis, and the existing blade control mode is also difficult to be applied to the diversified rescue work environment which needs to be faced by the rescue vehicle.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present disclosure provides a dozer blade system for a rescue vehicle and a rescue vehicle, which are suitable for an automobile chassis type dozer blade, are configured with two working modes, manual and automatic, are suitable for various different working conditions, have high working efficiency, are simple and reliable to control, and monitor the operation form and the load size of a scraper knife in real time.
In one aspect of the present disclosure, there is provided a blade system for a rescue vehicle, including:
the dozer blade is arranged on an automobile chassis of the rescue vehicle;
the oil cylinder assembly is used for controlling the operation form of the dozer blade;
the sensing assembly is used for measuring the pressure and displacement of the oil cylinder assembly; and
and the hydraulic assembly is connected with the oil cylinder assembly and the sensing assembly and can control oil supply to the oil cylinder assembly according to the measuring result of the sensing assembly so as to adjust the operation form of the dozer blade.
In some embodiments, the cylinder assembly comprises:
the lifting oil cylinder is used for controlling the height of the dozer blade relative to the ground;
the inclined oil cylinder is used for controlling the angle of the blade relative to the ground; and
and the folding oil cylinder is used for controlling the shovel surface shape of the dozer blade.
In some embodiments, the hydraulic assembly comprises:
the first reversing valve can selectively switch a rod cavity and a rodless cavity of the lifting oil cylinder to be respectively connected with the pressure oil source and the oil return flow path;
the second reversing valve can selectively switch a rod cavity and a rodless cavity of the inclined oil cylinder to be respectively connected with the pressure oil source and the oil return flow path; and
and the third reversing valve can selectively switch the rod cavity and the rodless cavity of the folding oil cylinder to be respectively connected with the pressure oil source and the oil return flow path.
In some embodiments, the hydraulic assembly further comprises:
and a first relief valve connected between the pressure oil source and the return flow path, having a first opening pressure, and capable of controlling pressure release from the pressure oil source to the return flow path.
In some embodiments, the hydraulic assembly further comprises:
the first stop valve is arranged between the rod cavity of the lifting oil cylinder and the first reversing valve; and
and the second stop valve is arranged between the rodless cavity of the lifting oil cylinder and the first reversing valve.
In some embodiments, the hydraulic assembly further comprises:
the fourth reversing valve is connected between the rod cavity of the lifting oil cylinder and the oil return flow path; and
and the fifth reversing valve is connected between the rodless cavity of the lifting oil cylinder and the oil return flow path.
In some embodiments, the fourth directional valve and the fifth directional valve are two-position two-way solenoid valves.
In some embodiments, the hydraulic assembly further comprises:
the second overflow valve is connected between the rod cavity of the lifting oil cylinder and the oil return flow path and is connected with the fourth reversing valve in parallel;
the third overflow valve is connected between the rodless cavity of the lifting oil cylinder and the oil return flow path and is connected with the fifth reversing valve in parallel;
the first check valve is connected between the rod cavity of the lifting oil cylinder and the oil return flow path, is connected with the fourth reversing valve and the second overflow valve in parallel, and only allows pressure oil to flow from the oil return flow path to the rod cavity of the lifting oil cylinder; and
and the second check valve is connected between the rodless cavity of the lifting oil cylinder and the oil return flow path, is connected with the fifth reversing valve and the third overflow valve in parallel, and only allows the pressure oil to flow from the oil return flow path to the rodless cavity of the lifting oil cylinder.
In some embodiments, the fourth direction valve and the fifth direction valve are connected to each other at their respective ends connected to the return flow path, and the hydraulic assembly further includes:
and the adjustable throttle valve is arranged between one end of the oil return flow path and the oil return flow path, and the fourth reversing valve and the fifth reversing valve are connected together.
In some embodiments, the first, second, and third directional valves are three-position, four-way electromagnetic directional valves, and the dozer blade system further comprises:
and the controller is in communication connection with the first reversing valve, the second reversing valve, the third reversing valve and the sensing assembly.
In some embodiments, the sensing assembly comprises:
the first pressure sensor and the second pressure sensor are respectively used for measuring the pressure of a rod cavity and a rodless cavity of the lifting oil cylinder;
the third pressure sensor and the fourth pressure sensor are respectively used for measuring the pressure of a rod cavity and a rodless cavity of the tilting oil cylinder;
the fifth pressure sensor and the sixth pressure sensor are respectively used for measuring the pressure of a rod cavity and a rodless cavity of the folding oil cylinder;
the first displacement sensor is used for measuring the displacement of the lifting oil cylinder;
the second displacement sensor is used for measuring the displacement of the inclined oil cylinder; and
and the third displacement sensor is used for measuring the displacement of the folding oil cylinder.
In yet another aspect of the present disclosure, a rescue vehicle is provided, comprising a blade as in any of the previous embodiments.
Therefore, according to the dozer blade system that this disclosed embodiment provided, can be applicable to chassis type dozer blade to dispose two kinds of manual and automatic mode, applicable multiple different operating modes have the operating efficiency height, control simple and reliable, the advantage of real-time supervision spiller operation form and load size.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:
FIG. 1 is a schematic block diagram of a hydraulic system in a dozer blade system according to some embodiments of the present disclosure;
FIG. 2 is a schematic structural view of a blade system according to some embodiments of the present disclosure;
FIG. 3 is a schematic illustration of a blade system control flow according to some embodiments of the present disclosure.
In the figure:
11. a lifting oil cylinder 12, an inclined oil cylinder 13 and a folding oil cylinder;
21. a first direction changing valve 22, a second direction changing valve 23 and a third direction changing valve;
3. a first overflow valve;
41. a first stop valve 42, a second stop valve;
51. a fourth direction valve, 52, a fifth direction valve;
61. a second relief valve, 62, a third relief valve;
71. a first check valve 72, a second check valve;
8. an adjustable throttle valve;
91. a first pressure sensor, 92, a second pressure sensor, 93, a third pressure sensor, 94, a fourth pressure sensor, 95, a fifth pressure sensor, 96, a sixth pressure sensor, 97, a first displacement sensor, 98, a second displacement sensor, 99, a third displacement sensor.
It should be understood that the dimensions of the various parts shown in the figures are not drawn to scale. Further, the same or similar reference numerals denote the same or similar components.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.
The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.
All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
As shown in FIGS. 1 to 3:
in one aspect of the present disclosure, there is provided a blade system for a rescue vehicle, including:
the dozer blade is arranged on an automobile chassis of the rescue vehicle;
the oil cylinder assembly is used for controlling the operation form of the dozer blade;
the sensing assembly is used for measuring the pressure and displacement of the oil cylinder assembly; and
and the hydraulic assembly is connected with the oil cylinder assembly and the sensing assembly and can control oil supply to the oil cylinder assembly according to the measuring result of the sensing assembly so as to adjust the operation form of the dozer blade.
The traditional bulldozer mostly adopts a crawler-type moving assembly to obtain stronger supporting capacity and larger friction force, and a blade system of the bulldozer is correspondingly arranged on a crawler chassis. Because the running speed of the crawler chassis is low and the maneuverability is poor, the operation working condition of the blade system in a certain time is single, and therefore, the control of the soil depth of the blade according to the power or the torque of a power component in the blade system is enough. In this case, the specifications of the bulldozer operator are high, and it is necessary to manually adjust the other work modes of the blade.
In contrast, the blade system of the present application is configured to a rescue vehicle, and the corresponding blade is mounted on a vehicle chassis of the rescue vehicle, and at this time, since the rescue vehicle uses tires as a moving component, the driving speed of the rescue vehicle is fast, the maneuverability of the rescue vehicle is strong, so that the blade on the rescue vehicle may need to face different working conditions in a short time, and therefore, the adjustment of the blade working form according to the power or torque of the power component is continued, and the requirement of rescue construction is difficult to meet. And the operator is difficult to keep the operation form of the dozer blade to meet the requirement all the time in the switching process of various operation working conditions.
Therefore, this application is through setting up sensing assembly for the pressure and the displacement volume of the hydro-cylinder subassembly that drive dozer blade and carry out the operation form change, and use two direct parameters of pressure and displacement volume as control variable, through the operation form of hydraulic pressure subassembly adjustment dozer blade. At the moment, the adjustment can be continuously dependent on manual adjustment, the measured values of the pressure and the displacement of the sensing assembly can be used as reference values or stop values in the manual adjustment process so as to improve the accuracy and the safety of the manual adjustment, and the adjustment of the dozer blade system can also be dependent on automatic adjustment of a hydraulic system so as to reduce the technical requirements on operators of the dozer blade system in the rescue vehicle and improve the control precision of the operation form of the dozer blade.
Further, in order to precisely control the working configuration of the blade, in some embodiments, the cylinder assembly includes:
the lifting oil cylinder 11 is used for controlling the height of the blade relative to the ground;
a tilt cylinder 12 for controlling the angle of the blade relative to the ground; and
and the folding oil cylinder 13 is used for controlling the shovel surface shape of the dozer blade.
The tilt cylinder 12 can control the pitch angle or the yaw angle of the blade with respect to the ground, and the folding cylinder 13 can control the folding motion of the blade in the longitudinal direction or the width direction of the blade, so that the working form of the blade is more suitable for the construction condition.
Further, in order to individually control each cylinder in the cylinder assembly to improve the control accuracy of the blade operating configuration, in some embodiments, the hydraulic assembly comprises:
a first direction change valve 21 capable of selectively switching a rod chamber and a rodless chamber of the lift cylinder 11 to be connected to a pressure oil source and an oil return flow path, respectively;
a second direction change valve 22 capable of selectively switching a rod chamber and a rodless chamber of the tilt cylinder 12 to be connected to a pressure oil source and an oil return flow path, respectively; and
the third direction change valve 23 is capable of selectively switching the connection of the rod chamber and the rodless chamber of the folding cylinder 13 to the pressure oil source and the return oil flow path, respectively.
Further, in order to improve the safety of the hydraulic assembly and prevent the hydraulic assembly from safety accidents caused by over-pressure, in some embodiments, the hydraulic assembly further comprises:
the first relief valve 3 is connected between the pressure oil source and the return flow path, has a first opening pressure, and is capable of controlling pressure release from the pressure oil source to the return flow path.
Further, in order to prevent the lift cylinder 11 from leakage accidents under the set working condition, so as to keep the height of the blade constant relative to the ground and prevent the risk that the blade may suddenly ascend or descend, in some embodiments, the hydraulic assembly further comprises:
a first cut-off valve 41 provided between the rod chamber of the lift cylinder 11 and the first direction valve 21; and
and the second stop valve 42 is arranged between the rodless cavity of the lifting oil cylinder 11 and the first reversing valve 21.
Further, in order to improve the safety of the lift cylinder 11, in some embodiments, the hydraulic assembly further includes:
a fourth direction change valve 51 connected between the rod chamber of the lift cylinder 11 and the oil return flow path; and
and a fifth direction change valve 52 connected between the rodless chamber of the lift cylinder 11 and the return flow path.
The fourth direction valve 51 and the fifth direction valve 52 are arranged between the lifting cylinder 11 and the oil return flow path, and can perform pressure relief treatment on the lifting cylinder 11 under the condition that the connection between the first direction valve 21 and the oil return flow path is blocked or the first direction valve 21 fails, so as to avoid the danger possibly generated by over-high or over-low position of the dozer blade relative to the ground.
Further, in order to facilitate the control of the fourth direction changing valve 51 and the fifth direction changing valve 52, especially the pressure relief operation of the lift cylinder 11 in an emergency through the fourth direction changing valve 51 and the fifth direction changing valve 52, in some embodiments, the fourth direction changing valve 51 and the fifth direction changing valve 52 are two-position two-way solenoid valves.
Further, in order to control the pressure in the rod chamber and the rodless chamber of the lift cylinder 11 to be always within a safe range, in some embodiments, the hydraulic assembly further includes:
a second overflow valve 61 connected between the rod chamber of the lift cylinder 11 and the return flow path, and connected in parallel with the fourth directional valve 51;
a third overflow valve 62 connected between the rodless chamber of the lift cylinder 11 and the return flow path, and connected in parallel with the fifth directional valve 52;
a first check valve 71 connected between the rod chamber of the lift cylinder 11 and the return flow path, connected in parallel with the fourth directional valve 51 and the second relief valve 61, and allowing only the pressure oil to flow from the return flow path to the rod chamber of the lift cylinder 11; and
the second check valve 72 is connected between the rodless chamber of the lift cylinder 11 and the return flow path, is connected in parallel to the fifth directional valve 52 and the third relief valve 62, and allows only the pressure oil to flow from the return flow path to the rodless chamber of the lift cylinder 11.
Taking the second relief valve 61 and the first check valve 71 as an example, when the pressure between the rod cavity of the lift cylinder 11 and the oil return flow path exceeds the set pressure of the second relief valve 61, the second relief valve 61 is opened to allow the excess pressure oil to remain in the oil return flow path through the second relief valve 61, and when the pressure between the rod cavity of the lift cylinder 11 and the oil return flow path is lower than the pressure of the oil return flow path, the first check valve 71 is opened to allow the oil return flow path to replenish the rod cavity of the lift cylinder 11.
The operation principle of the third relief valve 62 and the second check valve 72 is similar to that of the second relief valve 61 and the first check valve 71, and the description thereof is omitted.
Further, in order to control the pressure and flow rate of the drain flow of the lift cylinder 11 to the return flow path via the fourth direction switching valve 51 and the fifth direction switching valve 52, in some embodiments, the fourth direction switching valve 51 and the fifth direction switching valve 52 are connected to each other at their respective ends connected to the return flow path, and the hydraulic assembly further includes:
and an adjustable throttle valve 8 provided between the oil return flow path and one end of the fourth switching valve 51 and the fifth switching valve 52 connected in common to the oil return flow path.
Further, as shown in fig. 2, in order to facilitate control of the first direction valve 21, the second direction valve 22, and the third direction valve 23, and to improve the automation degree of the dozer blade system, in some embodiments, the first direction valve 21, the second direction valve 22, and the third direction valve 23 are three-position four-way electromagnetic direction valves, and the dozer blade system further includes:
and the controller is in communication connection with the first reversing valve 21, the second reversing valve 22, the third reversing valve 23 and the sensing assembly.
Further, in order to accurately measure the pressure and displacement of the cylinder assembly, in some embodiments, the sensing assembly comprises:
a first pressure sensor 91 and a second pressure sensor 92 for measuring the pressures of the rod chamber and the rodless chamber of the lift cylinder 11, respectively;
a third pressure sensor 93 and a fourth pressure sensor 94 for measuring the pressure of the rod chamber and the rod-less chamber of the tilt cylinder 12, respectively;
a fifth pressure sensor 95 and a sixth pressure sensor 96, which are respectively used for measuring the pressure of the rod cavity and the pressure of the rodless cavity of the folding oil cylinder 13;
a first displacement sensor 97 for measuring the displacement amount of the lift cylinder 11;
a second displacement sensor 98 for measuring the displacement amount of the tilt cylinder 12; and
and a third displacement sensor 99 for measuring the displacement of the folding cylinder 13.
Considering that the difficulty of directly measuring the pressure of the rod cavity or the rodless cavity of the oil cylinder assembly is high, the pressure sensor can be arranged on an external flow path of the rod cavity or the rodless cavity of the corresponding oil cylinder, and the displacement sensor can be integrated with the corresponding oil cylinder, so that the integration of the blade system is improved.
Further, in yet another aspect of the present disclosure, a rescue vehicle is provided, comprising a blade as in any of the previous embodiments.
As shown in fig. 3, further, in another aspect of the present disclosure, there is provided a control flow of a blade system for a rescue vehicle, including:
presetting the operation form of the dozer blade, and obtaining the preset value of the displacement of the oil cylinder assembly according to the preset operation form of the dozer blade;
selecting a control mode of the blade system as a manual control mode;
measuring the displacement of the oil cylinder assembly;
adjusting the oil cylinder assembly according to the magnitude relation between the measured value of the displacement of the oil cylinder assembly and the preset value; and
and stopping the adjustment of the blade system when the measured value of the displacement of the oil cylinder assembly is equal to the preset value.
The manual mode is suitable for being applied to the occasions with more complex construction working conditions and larger load change, and an operator is required to adjust the operation form of the dozer blade in real time according to the field conditions.
When the blade is in the manual control mode, the controller sends a signal command, and hydraulic oil enters the lifting oil cylinder 11, the folding oil cylinder 13 and the tilting oil cylinder 12 through three-position four-way electromagnetic directional valves, namely the first directional valve 21, the second directional valve 22 and the third directional valve 23. When the values of the first displacement sensor 97, the second displacement sensor 98 and the third displacement sensor 99 reach preset parameters, the first direction valve 21, the second direction valve 22 and the third direction valve 23 are closed, and the lift cylinder 11, the folding cylinder 13 and the tilt cylinder 12 stop operating.
It can be seen that in the manual control mode, the controller positively controls the oil feeding amounts of the lifting oil cylinder 11, the folding oil cylinder 13 and the tilting oil cylinder 12, and the first displacement sensor 97, the second displacement sensor 98 and the third displacement sensor 99 integrated on the lifting oil cylinder 11, the folding oil cylinder 13 and the tilting oil cylinder 12 feed detected displacement signals back to the controller, so that closed-loop control is realized, and the control on the operation form of the dozer blade is ensured to be accurate and reliable.
Further, in some embodiments, the control mode of the blade system is selected to be an automatic control mode, and the control flow further includes:
according to the preset operation form of the dozer blade, preset values of the pressure and the displacement of the oil cylinder assembly are obtained;
measuring the pressure and displacement of the oil cylinder assembly in real time; and
and adjusting the oil cylinder assembly according to the magnitude relation between the real-time measurement values of the pressure and the displacement of the oil cylinder assembly and the preset value.
The automatic mode is suitable for being applied to the occasions with simpler construction working conditions and small load change, and the operation form of the dozer blade is automatically adjusted according to the actual load.
When the blade is in the automatic control mode, the first displacement sensor 97, the second displacement sensor 98 and the third displacement sensor 99 compare the measured displacement of the lifting oil cylinder 11, the folding oil cylinder 13 and the inclined oil cylinder 12 with the preset oil cylinder displacement of the system, judge whether the measured displacement is equal, if the measured displacement is equal, the oil cylinder is adjusted in place, otherwise, the adjustment is continued.
Further, in order to improve the control accuracy of the blade in the automatic control mode and avoid the influence of accumulated errors on the operation form of the blade, in some embodiments, the blade is adjusted to the initial state after the control mode of the blade system is selected as the automatic control mode.
The blade control flow is further explained below with reference to fig. 3, in which:
s1, S2, S3 are the cylinder displacements measured by the first displacement sensor 97, the second displacement sensor 98, and the third displacement sensor 99, respectively;
s01, S02 and S03 are respectively the preset displacement of the lifting oil cylinder 11, the folding oil cylinder 13 and the tilting oil cylinder 12;
p1, P2 and P3 are respectively the cylinder pressure values measured by the pressure sensors of the lifting cylinder 11, the folding cylinder 13 and the tilting cylinder 12;
p01, P02 and P03 are respectively the cylinder pressure values set under different forms of the lifting cylinder 11, the folding cylinder 13 and the tilting cylinder 12;
the control flow comprises the following steps: firstly, a dozer blade operation mode is entered, and a manual operation mode and an automatic operation mode are selected according to different operation working conditions.
In the manual mode, the first displacement sensor 97, the second displacement sensor 98 and the third displacement sensor 99 compare the monitored displacement amounts of the lifting oil cylinder 11, the folding oil cylinder 13 and the tilt oil cylinder 12 with the displacement amounts of the lifting oil cylinder 11, the folding oil cylinder 13 and the tilt oil cylinder 12 preset by the system, judge whether the displacement amounts are equal, if the displacement amounts are equal, the lifting oil cylinder 11, the folding oil cylinder 13 and the tilt oil cylinder 12 are adjusted in place, otherwise, the adjustment is continued.
In the automatic mode, the blade works in the initial setting state, the pressure and the displacement of the lifting oil cylinder 11, the folding oil cylinder 13 and the tilting oil cylinder 12 are collected in real time, and the displacement of the lifting oil cylinder 11, the folding oil cylinder 13 and the tilting oil cylinder 12 is automatically adjusted according to the load change condition.
Therefore, according to the embodiment of the disclosure, the device can be suitable for the automotive chassis type dozer blade, is configured with two working modes, namely manual working mode and automatic working mode, is suitable for various different working conditions, and has the advantages of high working efficiency, simplicity and reliability in operation and control, and capability of monitoring the operation form and the load size of the scraper knife in real time.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (12)
1. The utility model provides a dozer blade system for rescue car which characterized in that includes:
the dozer blade is arranged on an automobile chassis of the rescue vehicle;
the oil cylinder assembly is used for controlling the operation form of the dozer blade;
the sensing assembly is used for measuring the pressure and displacement of the oil cylinder assembly; and
and the hydraulic assembly is connected with the oil cylinder assembly and the sensing assembly, and can control oil supply to the oil cylinder assembly according to the measuring result of the sensing assembly so as to adjust the operation form of the dozer blade.
2. The blade system of claim 1 wherein the cylinder assembly comprises:
the lifting oil cylinder (11) is used for controlling the height of the blade relative to the ground;
a tilt cylinder (12) for controlling the angle of the blade relative to the ground; and
and the folding oil cylinder (13) is used for controlling the shovel surface shape of the dozer blade.
3. The blade system of claim 2 wherein the hydraulic assembly comprises:
a first direction change valve (21) capable of selectively switching a rod chamber and a rodless chamber of the lift cylinder (11) to be connected to a pressure oil source and an oil return flow path, respectively;
a second directional control valve (22) capable of selectively switching a rod chamber and a rodless chamber of the tilt cylinder (12) to be connected to a pressure oil source and an oil return flow path, respectively; and
and a third direction change valve (23) capable of selectively switching the connection of the rod chamber and the rodless chamber of the folding cylinder (13) to the pressure oil source and the return oil flow path, respectively.
4. The blade system of claim 3 wherein the hydraulic assembly further comprises:
and a first relief valve (3) which is connected between the pressure oil source and the return flow path, has a first opening pressure, and can control the pressure relief from the pressure oil source to the return flow path.
5. The blade system of claim 3 wherein the hydraulic assembly further comprises:
a first cut-off valve (41) disposed between a rod chamber of the lift cylinder (11) and the first direction valve (21); and
and the second stop valve (42) is arranged between the rodless cavity of the lifting oil cylinder (11) and the first reversing valve (21).
6. The blade system of claim 3 wherein the hydraulic assembly further comprises:
the fourth reversing valve (51) is connected between the rod cavity of the lifting oil cylinder (11) and the oil return flow path; and
and a fifth direction change valve (52) connected between the rodless chamber of the lift cylinder (11) and the return flow path.
7. The blade system of claim 6 wherein the fourth directional valve (51) and the fifth directional valve (52) are two-position, two-way solenoid valves.
8. The blade system of claim 6 wherein the hydraulic assembly further comprises:
the second overflow valve (61) is connected between a rod cavity of the lifting oil cylinder (11) and the oil return flow path and is connected with the fourth reversing valve (51) in parallel;
the third overflow valve (62) is connected between the rodless cavity of the lifting oil cylinder (11) and the oil return flow path and is connected with the fifth reversing valve (52) in parallel;
a first check valve (71) connected between the rod chamber of the lift cylinder (11) and the return flow path, connected in parallel to the fourth directional valve (51) and the second relief valve (61), and allowing only the pressure oil to flow from the return flow path to the rod chamber of the lift cylinder (11); and
and the second check valve (72) is connected between the rodless cavity of the lifting oil cylinder (11) and the oil return flow path, is connected with the fifth reversing valve (52) and the third overflow valve (62) in parallel, and only allows pressure oil to flow from the oil return flow path to the rodless cavity of the lifting oil cylinder (11).
9. The blade system of claim 6 wherein the fourth directional valve (51) and the fifth directional valve (52) are each interconnected at one end connected to a return flow path, the hydraulic assembly further comprising:
and the adjustable throttle valve (8) is arranged between one end of the oil return flow path and the oil return flow path, and the fourth reversing valve (51) and the fifth reversing valve (52) are connected together.
10. A dozer system as claimed in claim 3 wherein said first (21), second (22) and third (23) directional valves are three-position four-way electromagnetic directional valves, the dozer system further comprising:
and the controller is in communication connection with the first reversing valve (21), the second reversing valve (22), the third reversing valve (23) and the sensing assembly.
11. The blade system of claim 10 wherein the sensing assembly comprises:
the first pressure sensor (91) and the second pressure sensor (92) are respectively used for measuring the pressure of a rod cavity and a rodless cavity of the lifting oil cylinder (11);
the third pressure sensor (93) and the fourth pressure sensor (94) are respectively used for measuring the pressure of a rod cavity and a rodless cavity of the tilt oil cylinder (12);
the fifth pressure sensor (95) and the sixth pressure sensor (96) are respectively used for measuring the pressure of a rod cavity and a rodless cavity of the folding oil cylinder (13);
a first displacement sensor (97) for measuring a displacement amount of the lift cylinder (11);
a second displacement sensor (98) for measuring a displacement amount of the tilt cylinder (12); and
and the third displacement sensor (99) is used for measuring the displacement of the folding oil cylinder (13).
12. Rescue vehicle, characterized in that it comprises a blade according to any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922359533.XU CN211898611U (en) | 2019-12-25 | 2019-12-25 | Soil spade system for rescue vehicle and rescue vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922359533.XU CN211898611U (en) | 2019-12-25 | 2019-12-25 | Soil spade system for rescue vehicle and rescue vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211898611U true CN211898611U (en) | 2020-11-10 |
Family
ID=73292741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922359533.XU Active CN211898611U (en) | 2019-12-25 | 2019-12-25 | Soil spade system for rescue vehicle and rescue vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211898611U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110872853A (en) * | 2019-12-25 | 2020-03-10 | 徐工集团工程机械有限公司 | Bulldozer blade system for rescue vehicle, rescue vehicle and control method of bulldozer blade system |
-
2019
- 2019-12-25 CN CN201922359533.XU patent/CN211898611U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110872853A (en) * | 2019-12-25 | 2020-03-10 | 徐工集团工程机械有限公司 | Bulldozer blade system for rescue vehicle, rescue vehicle and control method of bulldozer blade system |
| CN110872853B (en) * | 2019-12-25 | 2024-03-01 | 江苏徐工工程机械研究院有限公司 | Dozer blade system for rescue vehicle, rescue vehicle and control method of dozer blade system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8511080B2 (en) | Hydraulic control system having flow force compensation | |
| US8340875B1 (en) | Lift system implementing velocity-based feedforward control | |
| SU940651A3 (en) | Automatic control system for working implement of vehicle | |
| US8886415B2 (en) | System implementing parallel lift for range of angles | |
| EP1675760B1 (en) | Moveable working device with supporting extension arms | |
| CN107572432B (en) | Self-balancing system of crawler crane | |
| EP0293478A1 (en) | Vertical movement control apparatus for agricultural machines | |
| US8857168B2 (en) | Overrunning pump protection for flow-controlled actuators | |
| US20140060030A1 (en) | Hydraulic accumulator health monitor | |
| WO2006005496A1 (en) | Lifting gear valve arrangement | |
| CN110872853A (en) | Bulldozer blade system for rescue vehicle, rescue vehicle and control method of bulldozer blade system | |
| US8844280B2 (en) | Hydraulic control system having cylinder flow correction | |
| CN211898611U (en) | Soil spade system for rescue vehicle and rescue vehicle | |
| US9249555B2 (en) | Hydraulic system having fixable multi-actuator relationship | |
| CN112064698A (en) | Bucket automatic leveling control method and system based on angle | |
| DE3739525C2 (en) | ||
| CN112064699A (en) | Bucket automatic leveling control method and system based on oil cylinder stroke displacement | |
| EP1766246A1 (en) | Method for controlling a lifting gear valve system | |
| RU2719295C9 (en) | Continuous-action excavating machine hydraulic drive | |
| DE10131559A1 (en) | Device for spreading load of earth moving construction machine with extending arm based on controlled positioning of extending arm so that its center of gravity position is maintained within safe limits | |
| CN115362294A (en) | Electric control of a hydraulic system of a construction machine | |
| WO2010145733A1 (en) | Mobile working machine comprising a device for damping vibrations of a working arm, and method for damping the vibrations | |
| Ito | Bulldozer blade control | |
| CN218439972U (en) | Hydraulic control system and working machine | |
| EP3599382B1 (en) | Hydraulic system and method for controlling the speed and pressure of a hydraulic cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220804 Address after: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee after: JIANGSU XUGONG ENGINEERING MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee before: XCMG CONSTRUCTION MACHINERY Co.,Ltd. |
|
| TR01 | Transfer of patent right |