CN210978028U - Prevent hydraulic pressure closed traveling system that skids on support carrier - Google Patents
Prevent hydraulic pressure closed traveling system that skids on support carrier Download PDFInfo
- Publication number
- CN210978028U CN210978028U CN201921909415.5U CN201921909415U CN210978028U CN 210978028 U CN210978028 U CN 210978028U CN 201921909415 U CN201921909415 U CN 201921909415U CN 210978028 U CN210978028 U CN 210978028U
- Authority
- CN
- China
- Prior art keywords
- oil port
- pressure compensation
- communicated
- compensation valve
- hydraulic motor
- 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
- 230000001502 supplementing effect Effects 0.000 claims abstract description 50
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 230000033228 biological regulation Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 1
- 230000001629 suppression Effects 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Images
Abstract
The utility model discloses a prevent hydraulic pressure closed traveling system that skids on support carrier, including power supply, closed hydraulic pump, oil supplementing relief valve, oil supplementing check valve group, overflow valves and walking hydraulic motor group, power supply, closed hydraulic pump, oil supplementing pump and oil supplementing relief valve connect gradually, still include the pressure compensation valves, connect through the pressure compensation valves between overflow valves and the walking hydraulic motor group. The utility model discloses its regulation and control effect through the pressure compensation valves makes each tire under the different condition of ground adhesive force, adjusts the flow through each hydraulic motor, reaches flow automatic matching to the appearance of phenomenons such as the downhill path speed out of control is skidded in the suppression, reduces control system complexity, has improved the controllability greatly.
Description
Technical Field
The utility model relates to a colliery is support carrier technical field in the pit, especially relates to a hydraulic pressure closed traveling system who prevents skidding on support carrier.
Background
At present, the development of the large mining height fully mechanized caving face in China is rapid, the moving mode is laggard, the moving progress, the coal outlet efficiency and the working face continuing time are seriously influenced, and the safety condition is severe. Therefore, the development of a safe moving process suitable for the conditions of the large-mining-height fully mechanized caving face and corresponding matched rapid moving equipment integrally improves the moving level of the large-mining-height fully mechanized caving face equipment in China, and becomes a problem to be solved urgently.
As is known, the bracket carrier is a vehicle for carrying hydraulic brackets and some heavy equipment in a coal mine, is effective equipment for realizing quick moving of a working face, and has the advantages of large load capacity, high running speed, flexibility in maneuvering, large climbing gradient and the like. The support carrier can realize the transportation of not reprinting, practices thrift a large amount of auxiliary transportation personnel, greatly improves conveying efficiency to after the working face equipment transport finishes, the support carrier can regard as general multi-functional public transport vehicle in the pit to use. In the actual operation of the support carrier, a walking closed type driving system is usually adopted, the phenomenon of skidding caused by uneven flow distribution often occurs due to different ground adhesion of tires, in addition, when the support carrier runs on a downhill, the walking speed is gradually increased due to the action of gravity, the rotating speed of a hydraulic motor is accelerated, the walking hydraulic motor is changed into a pump working condition, the downhill speed is out of control, and the phenomenon of tail flicking of a vehicle body occurs.
There is therefore a need for improvements in the prior art.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems and the defects in the prior art, the invention provides the anti-slip hydraulic closed type traveling system on the support carrier, which adjusts the flow passing through each hydraulic motor under the condition that the ground adhesion of each tire is different through the regulation and control function of the pressure compensation valve group to achieve automatic flow matching, thereby inhibiting the occurrence of phenomena of slip, out-of-control downhill speed and the like, reducing the complexity of a control system and greatly improving the controllability.
In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
the utility model provides a prevent hydraulic pressure closed traveling system that skids on support carrier, is including power supply, closed hydraulic pump, oil supplementing relief valve, oil supplementing check valve group, overflow valves and walking hydraulic motor group, and power supply, closed hydraulic pump, oil supplementing pump and oil supplementing relief valve connect gradually, still include the pressure compensation valves, connect through the pressure compensation valves between overflow valves and the walking hydraulic motor group.
Furthermore, the closed hydraulic pump can drive two or more traveling hydraulic motors at the same time, the closed hydraulic pump controls the running direction of the traveling hydraulic motors according to an operation instruction, and when the oil supplementing check valve group comprises two oil supplementing check valves, namely a first oil supplementing check valve and a second oil supplementing check valve; the overflow valve group comprises two overflow valves, namely a first overflow valve and a second overflow valve; the two walking hydraulic motor groups are a first walking hydraulic motor and a second walking hydraulic motor; the number of the over-pressure compensation valve groups is four, namely a first pressure compensation valve, a second pressure compensation valve, a third pressure compensation valve and a fourth pressure compensation valve; wherein:
the pressure compensation valve also comprises a first pressure compensation valve, a second pressure compensation valve, a third pressure compensation valve and a fourth pressure compensation valve; wherein:
an oil port A of the first pressure compensation valve is communicated with an oil port M of the closed hydraulic pump, an oil port B of the first pressure compensation valve is communicated with an oil port I of the first walking hydraulic motor, an upper control cavity of the first pressure compensation valve is communicated with the oil port A of the first pressure compensation valve, and a lower control cavity of the first pressure compensation valve is communicated with the oil port B of the first pressure compensation valve;
an oil port C of the second pressure compensation valve is communicated with an oil port N of the closed hydraulic pump, an oil port D of the second pressure compensation valve is communicated with an oil port J of the first walking hydraulic motor, an upper control cavity of the second pressure compensation valve is communicated with the oil port D of the second pressure compensation valve, and a lower control cavity of the second pressure compensation valve is communicated with the oil port C of the second pressure compensation valve;
an oil port E of the III pressure compensation valve is communicated with an oil port M of the closed hydraulic pump, an oil port F of the III pressure compensation valve is communicated with an oil port K of the II traveling hydraulic motor, an upper control cavity of the III pressure compensation valve is communicated with the oil port E of the III pressure compensation valve, and a lower control cavity of the III pressure compensation valve is communicated with the oil port F of the III pressure compensation valve;
an oil port G of the IV pressure compensation valve is communicated with an oil port N of the closed hydraulic pump, an oil port H of the IV pressure compensation valve is communicated with an oil port L of the II traveling hydraulic motor, an upper control cavity of the IV pressure compensation valve is communicated with the oil port H of the IV pressure compensation valve, and a lower control cavity of the IV pressure compensation valve is communicated with the oil port G of the IV pressure compensation valve.
Furthermore, the closed hydraulic pump can drive two or more traveling hydraulic motors at the same time, the closed hydraulic pump controls the running direction of the traveling hydraulic motors according to an operation instruction, and when the oil supplementing check valve group comprises two oil supplementing check valves, namely a first oil supplementing check valve and a second oil supplementing check valve; the overflow valve group comprises two overflow valves, namely a first overflow valve and a second overflow valve; the traveling hydraulic motor groups are three, namely a first traveling hydraulic motor, a second traveling hydraulic motor and a third traveling hydraulic motor; six overpressure compensation valve groups are arranged, namely a first pressure compensation valve, a second pressure compensation valve, a third pressure compensation valve, a fourth pressure compensation valve, a fifth pressure compensation valve and a sixth pressure compensation valve; wherein:
an oil port A of the first pressure compensation valve is communicated with an oil port M of the closed hydraulic pump, an oil port B of the first pressure compensation valve is communicated with an oil port I of the first walking hydraulic motor, an upper control cavity of the first pressure compensation valve is communicated with the oil port A of the first pressure compensation valve, and a lower control cavity of the first pressure compensation valve is communicated with the oil port B of the first pressure compensation valve;
an oil port C of the second pressure compensation valve is communicated with an oil port N of the closed hydraulic pump, an oil port D of the second pressure compensation valve is communicated with an oil port J of the first walking hydraulic motor, an upper control cavity of the second pressure compensation valve is communicated with the oil port D of the second pressure compensation valve, and a lower control cavity of the second pressure compensation valve is communicated with the oil port C of the second pressure compensation valve;
an oil port E of the III pressure compensation valve is communicated with an oil port M of the closed hydraulic pump, an oil port F of the III pressure compensation valve is communicated with an oil port K of the II traveling hydraulic motor, an upper control cavity of the III pressure compensation valve is communicated with the oil port E of the III pressure compensation valve, and a lower control cavity of the III pressure compensation valve is communicated with the oil port F of the III pressure compensation valve;
an oil port G of the IV pressure compensation valve is communicated with an oil port N of the closed hydraulic pump, an oil port H of the IV pressure compensation valve is communicated with an oil port L of the II traveling hydraulic motor, an upper control cavity of the IV pressure compensation valve is communicated with the oil port H of the IV pressure compensation valve, and a lower control cavity of the IV pressure compensation valve is communicated with the oil port G of the IV pressure compensation valve;
an oil port O of the V-th pressure compensation valve is communicated with an oil port M of the closed hydraulic pump, an oil port P of the V-th pressure compensation valve is communicated with an oil port U of the III traveling hydraulic motor, an upper control cavity of the V-th pressure compensation valve is communicated with the oil port O of the V-th pressure compensation valve, and a lower control cavity of the V-th pressure compensation valve is communicated with the oil port P of the lower control.
An oil port Q of the VI pressure compensation valve is communicated with an oil port N of the closed hydraulic pump, an oil port S of the VI pressure compensation valve is communicated with an oil port V of the III traveling hydraulic motor, an upper control cavity of the VI pressure compensation valve is communicated with the oil port S of the VI pressure compensation valve, and a lower control cavity of the VI pressure compensation valve is communicated with the oil port Q of the lower control cavity of the VI pressure compensation valve.
The utility model discloses in the hydraulic pressure closed traveling system that skids is prevented to support carrier can make the flow through the motor maintain on setting for the flow according to the valve port aperture of the different automatically regulated pressure compensating valves of ground adhesive force to the flow of each hydraulic motor is passed through in the rational distribution, realizes that the flow is from matcing, thereby prevents to skid hydraulic motor rotational speed too fast, the phenomenon that the tire skidded appears, and keeps tire speed stable.
Compared with the prior art, the above technical scheme of the utility model, following advantage and positive effect have:
firstly, under the condition that the ground adhesion of each tire is different, the flow passing through each hydraulic motor is adjusted through the regulation and control function of a pressure compensation valve, so that the flow passing through the motor is maintained at a set flow, the flow passing through each hydraulic motor is reasonably distributed, the self-matching of the flow is realized, and the phenomena of slippage, runaway downhill speed and the like are prevented;
secondly, the system adopts full hydraulic drive, so that the complexity of the control system is reduced, and the controllability is greatly improved;
thirdly, this system not only is applicable to the support carrier, still can be used to the current all kinds of host computers that adopt closed hydraulic traveling system of other adoption, and the commonality is strong.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 is a schematic structure diagram of a system according to a first embodiment of the present invention;
fig. 3 is a schematic block diagram of a system according to a second embodiment of the present invention.
In the figure: 1, a power source; 2, a closed hydraulic pump; 3, an oil supplementing pump; 4, an oil-supplementing safety valve; 5, an oil supplementing check valve group; 6, an overflow valve group; 7, a pressure compensation valve group; 8, a walking hydraulic motor group; 5a, a first oil supplementing one-way valve; 5b, a second oil supplementing one-way valve; 6a, a first overflow valve; 6b, a second overflow valve; 7a, a first pressure compensation valve; 7b, a second pressure compensating valve; 7c, a III pressure compensating valve; 7d, a fourth pressure compensating valve; 7e, a vth pressure compensating valve; 7f, a VI pressure compensating valve; 8a, a first walking hydraulic motor; 8b, a second walking hydraulic motor; and 8c, a III traveling hydraulic motor.
Detailed Description
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Referring to fig. 1, as shown in the figure, an anti-slip hydraulic closed traveling system for a support truck comprises a power source 1, a closed hydraulic pump 2, an oil supplementing pump 3, an oil supplementing safety valve 4, an oil supplementing check valve group 5, an overflow valve group 6 and a traveling hydraulic motor group 8, wherein the power source 1, the closed hydraulic pump 2, the oil supplementing pump 3 and the oil supplementing safety valve 4 are sequentially connected, the hydraulic closed traveling system further comprises a pressure compensation valve group 7, the overflow valve group 6 and the traveling hydraulic motor group 8 are connected through the pressure compensation valve group 7, the closed hydraulic pump 2 can simultaneously drive two or more traveling hydraulic motors, and the closed hydraulic pump 2 controls the traveling direction of the traveling hydraulic motors according to an operation instruction.
Example one
As shown in fig. 1, an anti-slip hydraulic closed traveling system on a rack truck comprises a power source 1, a closed hydraulic pump 2, an oil supplementing pump 3, an oil supplementing safety valve 4, an oil supplementing check valve group 5, an overflow valve group 6, a traveling hydraulic motor group 8, wherein the power source 1, the closed hydraulic pump 2, the oil supplementing pump 3 and the oil supplementing safety valve 4 are sequentially connected, the anti-slip hydraulic closed traveling system further comprises a pressure compensation valve group 7, the overflow valve group 6 and the traveling hydraulic motor group 8 are connected through the pressure compensation valve group 7, and the number of the oil supplementing check valve groups 5 is two, namely a first oil supplementing check valve 5a and a second oil supplementing check valve 5 b; the overflow valve group 6 comprises two first overflow valves 6a and two second overflow valves 6 b; two traveling hydraulic motor groups 8 are provided, namely a first traveling hydraulic motor 8a and a second traveling hydraulic motor 8 b; the number of the over-pressure compensation valve groups 7 is four, namely a first pressure compensation valve 7a, a second pressure compensation valve 7b, a third pressure compensation valve 7c and a fourth pressure compensation valve 7 d; wherein:
an oil port A of the first pressure compensation valve 7a is communicated with an oil port M of the closed hydraulic pump 2, an oil port B is communicated with an oil port I of the first walking hydraulic motor 8a, an upper control cavity of the first pressure compensation valve 7a is communicated with the oil port A, and a lower control cavity of the first pressure compensation valve 7a is communicated with the oil port B;
an oil port C of the II pressure compensation valve 7b is communicated with an oil port N of the closed hydraulic pump 2, an oil port D is communicated with an oil port J of the I walking hydraulic motor 8a, an upper control cavity of the II pressure compensation valve 7b is communicated with the oil port D thereof, and a lower control cavity is communicated with the oil port C thereof;
an oil port E of the III pressure compensation valve 7c is communicated with an oil port M of the closed hydraulic pump 2, an oil port F of the III pressure compensation valve is communicated with an oil port K of the II traveling hydraulic motor 8b, an upper control cavity of the III pressure compensation valve 7c is communicated with the oil port E of the III pressure compensation valve, and a lower control cavity of the III pressure compensation valve is communicated with the oil port F of the III pressure compensation valve;
an oil port G of the IV pressure compensation valve 7d is communicated with an oil port N of the closed hydraulic pump 2, an oil port H is communicated with an oil port L of the II traveling hydraulic motor 8b, an upper control cavity of the IV pressure compensation valve 7d is communicated with the oil port H thereof, and a lower control cavity is communicated with the oil port G thereof;
the utility model discloses in can be according to the different automatically regulated pressure compensating valve 7a of ground adhesive force, 7b, 7c and 7 d's valve port aperture, make the flow through the motor maintain on setting for the flow to the flow of each hydraulic motor is passed through in the rational distribution, realizes that the flow is from matcing, thereby prevents to skid hydraulic motor rotational speed too fast, the phenomenon that the tire skidded appears, and keeps tire speed stable.
Further, the closed hydraulic pump 2 can drive two or more traveling hydraulic motors at the same time, and the closed hydraulic pump controls the traveling directions of the traveling hydraulic motors according to the operation command.
Example two
As shown in fig. 3, the anti-slip hydraulic closed traveling system on the rack truck comprises a power source 1, a closed hydraulic pump 2, an oil supplementing pump 3, an oil supplementing safety valve 4, an oil supplementing check valve group 5, an overflow valve group 6, a traveling hydraulic motor group 8, wherein the power source 1, the closed hydraulic pump 2, the oil supplementing pump 3 and the oil supplementing safety valve 4 are sequentially connected, the anti-slip hydraulic closed traveling system further comprises a pressure compensation valve group 7, and the overflow valve group 6 and the traveling hydraulic motor group 8 are connected through the pressure compensation valve group 7; the oil supplementing check valve group 5 comprises two first oil supplementing check valves 5a and two second oil supplementing check valves 5 b; the overflow valve group 6 comprises two first overflow valves 6a and two second overflow valves 6 b; three traveling hydraulic motor groups 8 are provided, namely a first traveling hydraulic motor 8a, a second traveling hydraulic motor 8b and a third traveling hydraulic motor 8 c; six overpressure compensation valve groups 7 are arranged, namely a first pressure compensation valve 7a, a second pressure compensation valve 7b, a third pressure compensation valve 7c, a fourth pressure compensation valve 7d, a fifth pressure compensation valve 7e and a sixth pressure compensation valve 7 f; wherein:
an oil port A of the first pressure compensation valve 7a is communicated with an oil port M of the closed hydraulic pump 2, an oil port B is communicated with an oil port I of the first walking hydraulic motor 8a, an upper control cavity of the first pressure compensation valve 7a is communicated with the oil port A, and a lower control cavity of the first pressure compensation valve 7a is communicated with the oil port B;
an oil port C of the II pressure compensation valve 7b is communicated with an oil port N of the closed hydraulic pump 2, an oil port D is communicated with an oil port J of the I walking hydraulic motor 8a, an upper control cavity of the II pressure compensation valve 7b is communicated with the oil port D thereof, and a lower control cavity is communicated with the oil port C thereof;
an oil port E of the III pressure compensation valve 7c is communicated with an oil port M of the closed hydraulic pump 2, an oil port F of the III pressure compensation valve is communicated with an oil port K of the II traveling hydraulic motor 8b, an upper control cavity of the III pressure compensation valve 7c is communicated with the oil port E of the III pressure compensation valve, and a lower control cavity of the III pressure compensation valve is communicated with the oil port F of the III pressure compensation valve;
an oil port G of the IV pressure compensation valve 7d is communicated with an oil port N of the closed hydraulic pump 2, an oil port H is communicated with an oil port L of the II traveling hydraulic motor 8b, an upper control cavity of the IV pressure compensation valve 7d is communicated with the oil port H thereof, and a lower control cavity is communicated with the oil port G thereof.
An oil port O of the V-th pressure compensation valve 7e is communicated with an oil port M of the closed hydraulic pump 2, an oil port P is communicated with an oil port U of the III traveling hydraulic motor 8c, an upper control cavity of the V-th pressure compensation valve 7e is communicated with the oil port O, and a lower control cavity is communicated with the oil port P.
An oil port Q of the VI pressure compensation valve 7f is communicated with an oil port N of the closed hydraulic pump 2, an oil port S is communicated with an oil port V of the III traveling hydraulic motor 8c, an upper control cavity of the VI pressure compensation valve 7f is communicated with the oil port S, and a lower control cavity is communicated with the oil port Q.
The utility model discloses in can be according to the different automatically regulated pressure compensating valve 7a of ground adhesive force, 7b, 7c and 7 d's valve port aperture, make the flow through the motor maintain on setting for the flow to the flow of each hydraulic motor is passed through in the rational distribution, realizes that the flow is from matcing, thereby prevents to skid hydraulic motor rotational speed too fast, the phenomenon that the tire skidded appears, and keeps tire speed stable.
It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a prevent hydraulic pressure closed traveling system that skids on support carrier, is including power supply (1), closed hydraulic pump (2), oil supplementing pump (3), oil supplementing relief valve (4), oil supplementing check valve group (5), overflow valves (6) and walking hydraulic motor group (8), its characterized in that: the hydraulic motor walking system is characterized by further comprising a pressure compensation valve group (7), and the overflow valve group (6) is connected with the walking hydraulic motor group (8) through the pressure compensation valve group (7).
2. The anti-skid hydraulic closed traveling system of claim 1, wherein: the oil supplementing check valve group (5) comprises two first oil supplementing check valves (5a) and two second oil supplementing check valves (5 b); the overflow valve group (6) comprises two first overflow valves (6a) and two second overflow valves (6 b); two traveling hydraulic motor groups (8) are provided, namely a first traveling hydraulic motor (8a) and a second traveling hydraulic motor (8 b); the number of the over-pressure compensation valve groups (7) is four, namely a first pressure compensation valve (7a), a second pressure compensation valve (7b), a third pressure compensation valve (7c) and a fourth pressure compensation valve (7 d); wherein:
an oil port A of the first pressure compensation valve (7a) is communicated with an oil port M of the closed hydraulic pump (2), an oil port B is communicated with an oil port I of the first walking hydraulic motor (8a), an upper control cavity of the first pressure compensation valve (7a) is communicated with the oil port A, and a lower control cavity of the first pressure compensation valve (7a) is communicated with the oil port B;
an oil port C of the second pressure compensation valve (7b) is communicated with an oil port N of the closed hydraulic pump (2), an oil port D is communicated with an oil port J of the first walking hydraulic motor (8a), an upper control cavity of the second pressure compensation valve (7b) is communicated with the oil port D thereof, and a lower control cavity is communicated with the oil port C thereof;
an oil port E of the III pressure compensation valve (7c) is communicated with an oil port M of the closed hydraulic pump (2), an oil port F is communicated with an oil port K of the II traveling hydraulic motor (8b), an upper control cavity of the III pressure compensation valve (7c) is communicated with the oil port E of the III pressure compensation valve, and a lower control cavity of the III pressure compensation valve is communicated with the oil port F of the III pressure compensation valve;
an oil port G of the IV pressure compensation valve (7d) is communicated with an oil port N of the closed hydraulic pump (2), an oil port H is communicated with an oil port L of the II traveling hydraulic motor (8b), an upper control cavity of the IV pressure compensation valve (7d) is communicated with the oil port H, and a lower control cavity of the IV pressure compensation valve is communicated with the oil port G.
3. The anti-skid hydraulic closed traveling system of claim 1, wherein: the oil supplementing check valve group (5) comprises two first oil supplementing check valves (5a) and two second oil supplementing check valves (5 b); the overflow valve group (6) comprises two first overflow valves (6a) and two second overflow valves (6 b); three traveling hydraulic motor groups (8) are provided, namely a first traveling hydraulic motor (8a), a second traveling hydraulic motor (8b) and a third traveling hydraulic motor (8 c); six overpressure compensation valve groups (7) are provided, namely a first pressure compensation valve (7a), a second pressure compensation valve (7b), a third pressure compensation valve (7c), a fourth pressure compensation valve (7d), a fifth pressure compensation valve (7e) and a sixth pressure compensation valve (7 f); wherein:
an oil port A of the first pressure compensation valve (7a) is communicated with an oil port M of the closed hydraulic pump (2), an oil port B is communicated with an oil port I of the first walking hydraulic motor (8a), an upper control cavity of the first pressure compensation valve (7a) is communicated with the oil port A, and a lower control cavity of the first pressure compensation valve (7a) is communicated with the oil port B;
an oil port C of the second pressure compensation valve (7b) is communicated with an oil port N of the closed hydraulic pump (2), an oil port D is communicated with an oil port J of the first walking hydraulic motor (8a), an upper control cavity of the second pressure compensation valve (7b) is communicated with the oil port D thereof, and a lower control cavity is communicated with the oil port C thereof;
an oil port E of the III pressure compensation valve (7c) is communicated with an oil port M of the closed hydraulic pump (2), an oil port F is communicated with an oil port K of the II traveling hydraulic motor (8b), an upper control cavity of the III pressure compensation valve (7c) is communicated with the oil port E of the III pressure compensation valve, and a lower control cavity of the III pressure compensation valve is communicated with the oil port F of the III pressure compensation valve;
an oil port G of the IV pressure compensation valve (7d) is communicated with an oil port N of the closed hydraulic pump (2), an oil port H is communicated with an oil port L of the II traveling hydraulic motor (8b), an upper control cavity of the IV pressure compensation valve (7d) is communicated with the oil port H, and a lower control cavity of the IV pressure compensation valve is communicated with the oil port G;
an oil port O of the V-th pressure compensation valve (7e) is communicated with an oil port M of the closed hydraulic pump (2), an oil port P is communicated with an oil port U of the III traveling hydraulic motor (8c), an upper control cavity of the V-th pressure compensation valve (7e) is communicated with the oil port O, and a lower control cavity of the V-th pressure compensation valve is communicated with the oil port P;
an oil port Q of the VI pressure compensation valve (7f) is communicated with an oil port N of the closed hydraulic pump (2), an oil port S is communicated with an oil port V of the III traveling hydraulic motor (8c), an upper control cavity of the VI pressure compensation valve (7f) is communicated with the oil port S, and a lower control cavity is communicated with the oil port Q.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921909415.5U CN210978028U (en) | 2019-11-07 | 2019-11-07 | Prevent hydraulic pressure closed traveling system that skids on support carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921909415.5U CN210978028U (en) | 2019-11-07 | 2019-11-07 | Prevent hydraulic pressure closed traveling system that skids on support carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210978028U true CN210978028U (en) | 2020-07-10 |
Family
ID=71415821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921909415.5U Active CN210978028U (en) | 2019-11-07 | 2019-11-07 | Prevent hydraulic pressure closed traveling system that skids on support carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210978028U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738341A (en) * | 2022-04-22 | 2022-07-12 | 扬州市职业大学(扬州开放大学) | Walking hydraulic transmission system of hydraulic four-wheel-drive high-ground-clearance wheel type spraying machine |
-
2019
- 2019-11-07 CN CN201921909415.5U patent/CN210978028U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738341A (en) * | 2022-04-22 | 2022-07-12 | 扬州市职业大学(扬州开放大学) | Walking hydraulic transmission system of hydraulic four-wheel-drive high-ground-clearance wheel type spraying machine |
| CN114738341B (en) * | 2022-04-22 | 2023-05-05 | 扬州市职业大学(扬州开放大学) | Walking hydraulic transmission system of hydraulic four-wheel drive high-clearance wheel type sprayer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209534736U (en) | A kind of hydraulic system of orchard picking equipment | |
| CN210978028U (en) | Prevent hydraulic pressure closed traveling system that skids on support carrier | |
| CN203428877U (en) | Driving wheel automatic adjustment type full-electric pallet truck | |
| WO2009046264A1 (en) | Load controlled stabilizer system | |
| CN116692724A (en) | Unmanned transportation system | |
| CN106672852A (en) | Multifunctional vehicle-mounted hydraulic lifting table | |
| CN110714945A (en) | Prevent hydraulic pressure closed traveling system that skids on support carrier | |
| CN205045775U (en) | Universal 4 wheel driven fork truck of hydraulic pressure | |
| CN203402893U (en) | Portable transformer lifting machine | |
| CN201106297Y (en) | Non-power supply parking equipment | |
| CN105172499A (en) | Explosion-proof diesel engine air-ground vehicle for coal mine underground roadway | |
| CN211423231U (en) | Multi-wheel drive anti-skid system | |
| CN106082039B (en) | A kind of speed limiting safety system of high position stacking door frame | |
| CN110410386B (en) | Hydraulic power lifting system of stereo bus garage | |
| CN103754798A (en) | Semi-electric self-lifting loading and unloading car | |
| CN205313005U (en) | Power -driven carrier | |
| CN213569201U (en) | Self-adaptive damping leveling system | |
| CN105508323B (en) | Self propelled harvester hydraulic pressure four-wheel drive shoe | |
| CN205033888U (en) | Empty convertible car in explosion -proof diesel engine land of colliery underworkings | |
| CN103318810A (en) | Portable transformer lifting machine | |
| CN204659539U (en) | A kind of Self-loading-unloading radial type aluminium bag transport trolley | |
| CN201296199Y (en) | Obstacle surmounting transport cart | |
| CN203682667U (en) | Self-propelled motorized loading and unloading vehicle platform | |
| CN110254559B (en) | Method for increasing climbing capacity of support carrier | |
| CN102874281A (en) | Trolley for transporting electric poles in field |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 199, Wenhua street, Yuci District, Jinzhong City, Shanxi Province Patentee after: JINZHONG University Country or region after: China Patentee after: Inner Mongolia Tongxin Technology Co.,Ltd. Address before: No. 199, Wenhua street, Yuci District, Jinzhong City, Shanxi Province Patentee before: JINZHONG University Country or region before: China Patentee before: Ordos Tongxin Mining Technology Co.,Ltd. |