CN111559214A - Oil gas suspension and mining dump truck - Google Patents
Oil gas suspension and mining dump truck Download PDFInfo
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- CN111559214A CN111559214A CN201910115390.XA CN201910115390A CN111559214A CN 111559214 A CN111559214 A CN 111559214A CN 201910115390 A CN201910115390 A CN 201910115390A CN 111559214 A CN111559214 A CN 111559214A
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- piston
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- cylinder
- pneumatic suspension
- piston rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/265—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs hydraulic springs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/15—Fluid spring
Abstract
The invention relates to an oil-gas suspension and a mining dump truck. Wherein, hydro-pneumatic suspension includes: the cylinder barrel is pre-filled with oil gas; the cylinder bottom is arranged at the end part of the cylinder barrel; the first end of the piston rod is movably arranged in the cylinder barrel, and the second end of the piston rod is positioned outside the cylinder barrel; the first piston is arranged in the cylinder barrel and connected to the first end of the piston rod; the second piston is arranged in the cylinder barrel and is positioned between the first piston and the cylinder bottom; and an elastic member connecting the second piston and the cylinder bottom. The hydro-pneumatic suspension provided by the invention has the advantages that the hydro-pneumatic suspension is subjected to double buffering and vibration reduction through the oil gas and the elastic piece, the reliability is high, and the problem that a vehicle cannot normally run under the conditions of oil gas leakage and vibration reduction failure of the hydro-pneumatic suspension with single hydro-pneumatic vibration reduction is solved.
Description
Technical Field
The invention relates to the field of engineering machinery, in particular to an oil-gas suspension and a mining dump truck.
Background
A mining dump truck is a large-scale transport machine for carrying out transport operation in various large-scale open-pit mines, hydraulic and hydroelectric engineering and the like, and belongs to an off-highway vehicle. The mining dump truck has the advantages that the road condition of the running road of the mining dump truck is very poor, the requirements on the comfort level, the running smoothness and the operation stability of the whole truck are high, the hydro-pneumatic suspension serves as a buffer vibration damping mechanism of the whole truck and is a main part for connecting an axle and a truck frame, and the reliability of the hydro-pneumatic suspension is very important to the reliability, the comfort level and the like of the whole truck. Moreover, the mining dump truck is a truck type with short wheelbase and extremely large mass, has no corresponding space for installing the traditional steel plate spring for damping, and is more suitable for installing and using the hydro-pneumatic suspension.
The hydro-pneumatic suspension generally includes a cylinder, a piston rod, a sealing system, and the like. When the mining dump truck runs on a road and meets a hollow or raised obstacle, the piston rod of the hydro-pneumatic suspension has large expansion range and is fast, the piston is easy to be in direct contact with the cylinder bottom or the guide sleeve, and the problem of oil leakage and air leakage caused by sealing damage due to frequent expansion of the piston rod easily occurs.
When the vehicle is in a transportation path, the oil-gas suspension frame has the problems of oil leakage and air leakage, so that the vibration damping function of the oil-gas suspension frame is failed, and the vehicle cannot run; and as the vehicle is far away from a maintenance factory, the field maintenance cost is greatly increased, the normal running of other vehicles is influenced, and a safety accident occurs in severe cases.
Disclosure of Invention
The invention provides an oil-gas suspension and a mining dump truck, which are used for relieving the problem that an oil-gas leaking vehicle of the oil-gas suspension cannot normally run.
Some embodiments of the present invention provide an oil and gas suspension comprising:
a cylinder configured for pre-filling oil and gas therein;
the cylinder bottom is arranged at the end part of the cylinder barrel;
the first end of the piston rod is movably arranged in the cylinder barrel, and the second end of the piston rod is positioned outside the cylinder barrel;
the first piston is arranged in the cylinder barrel and connected to the first end of the piston rod;
the second piston is arranged in the cylinder barrel and is positioned between the first piston and the cylinder bottom; and
and the elastic piece is connected with the second piston and the cylinder bottom.
In some embodiments, the hydro-pneumatic suspension comprises a connecting plate disposed on the cylinder bottom, and the elastic member is connected with the cylinder bottom through the connecting plate.
In some embodiments, the spring comprises a non-metallic spring or a metallic spring.
In some embodiments, the elastic member comprises a foldable elastic body, and a first end of the foldable elastic body is connected to the cylinder bottom, and a second end of the foldable elastic body is connected to the second piston.
In some embodiments, the second piston comprises a floating piston.
In some embodiments, the cylinder bottom is provided with a first channel for injecting gas into the cylinder bore.
In some embodiments, the second end of the piston rod is provided with a second passage for injecting hydraulic oil into the cylinder.
In some embodiments, a first cavity is arranged inside the piston rod, and the first piston and the second piston are both provided with through holes communicating the first cavity with the space in the cylinder barrel.
In some embodiments, the hydro-pneumatic suspension comprises a guide sleeve arranged at one end of the cylinder barrel away from the cylinder bottom and used for guiding the movement of the piston rod.
In some embodiments, a second chamber is formed between the first piston and the guide sleeve, the second chamber being located between the piston rod and the cylinder.
In some embodiments, a first cavity is formed inside the piston rod, and a third channel communicating the first cavity with the second cavity is formed in the piston rod.
In some embodiments, the third channel comprises:
the first part is communicated with the second cavity;
a second portion communicating the first portion with the first chamber, the second portion having a flow area smaller than the flow area of the first portion; and
the ball is arranged at the first part, and the cross-sectional area of the ball is larger than the flow area of the second part; the ball is used for disconnecting the communication between the first part and the second part under the condition that the pressure in the second cavity is greater than the pressure in the first cavity; communicating the first location with the second location when the pressure within the first chamber is greater than the pressure within the second chamber.
In some embodiments, in the use state of the oil gas suspension, the end of the cylinder barrel, which is provided with the cylinder bottom, is located at the upper part, and the end of the cylinder barrel, which is far away from the cylinder bottom, is located at the lower part.
In some embodiments, the cylinder bottom is removably connected to the cylinder barrel.
Some embodiments of the invention provide a mining dump truck comprising the hydro-pneumatic suspension described above.
Based on the technical scheme, the invention at least has the following beneficial effects:
in some embodiments, the hydro-pneumatic suspension is combined with the elastic part through oil gas, and under a common condition, the hydro-pneumatic suspension stretches through the piston rod to compress the oil gas, so that a suspension function is realized, and the comfort level, the running smoothness and the operation stability of the whole vehicle are ensured; when oil gas suspension oil leak gas leakage, perhaps road conditions are abominable, cause the piston rod to stretch out and draw back by a wide margin, first piston contact second piston, compression elastic component, elastic component play buffering damping effect, avoid appearing the unable normal condition of traveling of vehicle under oil gas suspension oil leak gas leakage and the abominable operating mode.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic illustration in partial cross-section of an hydro-pneumatic suspension provided in accordance with some embodiments of the present invention;
FIG. 2 is a schematic view, partially in section, of a cylinder bottom provided in accordance with certain embodiments of the present invention;
FIG. 3 is a side view of FIG. 2;
fig. 4 is a schematic cross-sectional view of a floating piston provided in some embodiments of the present invention.
Reference numerals in the drawings indicate:
1-a cylinder barrel;
2-cylinder bottom; 21-a first channel; 22-a connecting part; 23-an extension; 24-a first aperture; 25-a second well;
3-a piston rod; 31-a second channel; 32-a first cavity; 33-a third channel; 34-a ball bearing;
4-a first piston; 41-a first through hole;
5-a second piston; 51-a second via;
6-an elastic member;
7-a connecting plate;
8, a guide sleeve;
9-a second cavity;
10-support ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.
As shown in fig. 1, a schematic diagram of an hydro-pneumatic suspension is provided in some embodiments.
In some embodiments, the hydro-pneumatic suspension comprises a cylinder barrel 1. Oil gas is preset in the cylinder barrel 1, and vibration reduction is achieved by compressing the oil gas. The oil gas comprises hydraulic oil and gas. Optionally, the gas comprises an inert gas, such as: the nitrogen gas was dried.
In some embodiments, the hydro-pneumatic suspension comprises a cylinder bottom 2, the cylinder bottom 2 being provided at an end of the cylinder tube 1.
In some embodiments, the cylinder bottom 2 is detachably connected to the cylinder tube 1. The cylinder bottom 2 and the cylinder barrel 1 are of a split structure and are convenient to disassemble, assemble and maintain. Alternatively, the cylinder bottom 2 is connected to the cylinder tube 1 by screws.
In some embodiments, the hydro-pneumatic suspension comprises a piston rod 3, a first end of the piston rod 3 being movably arranged inside the cylinder 1, and a second end of the piston rod 3 being located outside the cylinder 1.
In some embodiments, the hydro-pneumatic suspension comprises a first piston 4, the first piston 4 being disposed within the cylinder 1 and connected to a first end of the piston rod 3.
Optionally, the first piston 4 is connected to the piston rod 3 by means of screws.
In some embodiments, the hydro-pneumatic suspension comprises a second piston 5, the second piston 5 being disposed within the cylinder barrel 1 and between the first piston 4 and the cylinder bottom 2.
In some embodiments, the hydro-pneumatic suspension comprises a resilient member 6, the resilient member 6 connecting the second piston 5 with the cylinder bottom 2.
In some embodiments, oil gas is preset in the cylinder barrel 1, and in the case of general road conditions, the oil gas suspension frame stretches through the piston rod 3 to compress oil gas (gas and hydraulic oil), so that the suspension function is realized, and the comfort level, the running smoothness and the operation stability of the whole vehicle are ensured. When oil leak and gas leakage of oil gas suspension, or when bad road conditions appear, the piston rod 3 stretches out and draws back by a wide margin, and first piston 4 contacts second piston 5, compresses elastic component 6, and elastic component 6 plays certain buffering damping effect, reduces the motion range of piston rod 3, avoids first piston 4 and cylinder bottom 2 direct contact, and influences whole oil gas suspension's reliability.
When oil leakage and air leakage of the oil-gas suspension occur, oil-gas vibration reduction is invalid, the elastic piece 6 can play a vibration reduction role, the vehicle can continue to work, and the problem that the vehicle cannot normally run under the condition that the oil-gas vibration reduction of the oil-gas suspension with single oil-gas vibration reduction is invalid is solved.
In some embodiments, the cylinder barrel 1 is subjected to double buffering and vibration reduction through oil gas and the elastic piece 6, the reliability is high, and the buffering and vibration reduction effects are good.
In some embodiments, the hydro-pneumatic suspension comprises a connection plate 7. The connecting plate 7 is arranged on the cylinder bottom 2, and the elastic piece 6 is connected with the cylinder bottom 2 through the connecting plate 7. The elastic member 6 has one end connected to the connecting plate 7 and the other end connected to the second piston 5. Alternatively, the connecting plate 7 is connected to the cylinder bottom 2 by screws.
In some embodiments, the spring 6 comprises a non-metallic spring or a metallic spring.
In some embodiments, the elastic members 6 comprise foldable elastic bodies. A first end of the elastic member 6 is connected to the cylinder bottom 2 and a second end of the elastic member 6 is connected to the second piston 5.
Alternatively, the elastic member 6 comprises a cylindrical structure that can pass through oil and gas.
In some embodiments, the outer periphery of the second piston 5 is clearance-fitted to the inner wall of the cylinder 1, and the second piston 5 is freely slidable within the cylinder 1.
In some embodiments, the outer periphery of the second piston 5 is provided with a spiral groove for injecting lubricating oil therein so that the second piston 5 can freely slide in the cylinder tube 1.
In some embodiments, the second piston 5 is made of a wear-resistant hard non-metallic material.
In some embodiments, the connecting plate 7, the second piston 5 and the elastic member 6 form an elastic body system.
Alternatively, the elastomer system is connected to the cylinder bottom 2 by means of screws.
In some embodiments, the second piston 5 has the characteristics of self-lubricating and wear-resisting, and the surface of the second piston 5 is provided with a spiral groove for injecting lubricating oil, so that good lubrication is ensured and the wear of the second piston 5 is reduced. The second piston 5 is made of non-metal materials, so that impact abnormal sound can be avoided when the first piston 4 made of metal materials is in contact with the second piston.
In some embodiments, the second piston 5 comprises a floating piston. Optionally, the floating piston has a self-lubricating effect. The floating piston can be automatically corrected in the cylinder barrel 1, and eccentric abrasion caused by non-concentric installation can be avoided. The floating piston is made of wear-resistant hard plastic, and the hard plastic can ensure the mechanical property of the floating piston, avoid the first piston 4 from being broken due to the collision with the floating piston and reduce the collision abnormal sound.
In some embodiments, the cylinder bottom 2 is provided with a first channel 21 for injecting gas into the cylinder tube 1.
In some embodiments, the second end of the piston rod 3 is provided with a second channel 31 for injecting hydraulic oil into the cylinder 1.
In some embodiments, the interior of the piston rod 3 is provided with a first cavity 32.
The first piston 4 is provided with a first through hole 41 communicating the first chamber 32 with the space inside the cylinder 1.
As shown in fig. 4, the second piston 5 is provided with a second through hole 51 communicating the first chamber 32 with the space inside the cylinder 1.
In some embodiments, the entire elastomer system is in an inert gas and hydraulic oil, avoiding the problem of aging after exposure to air sunlight, greatly increasing service life.
In some embodiments, the hydro-pneumatic suspension includes a guide sleeve 8. The guide sleeve 8 is arranged at one end of the cylinder barrel 1 far away from the cylinder bottom 2 and used for guiding the movement of the piston rod 3.
Alternatively, the guide sleeve 8 is connected to the cylinder barrel 1 by means of screws.
In some embodiments, a second chamber 9 is formed between the first piston 4 and the guide sleeve 8, the second chamber 9 being located between the piston rod 3 and the cylinder 1.
In some embodiments, the piston rod 3 is provided with a first cavity 32 inside, and the piston rod 3 is provided with a third channel 33 communicating the first cavity 32 with the second cavity 9.
In some embodiments, the third channel 33 includes a first location that communicates with the second chamber 9.
In some embodiments, the third passage 33 includes a second location communicating between the first location and the first chamber 32, the second location having a smaller flow area than the first location.
In some embodiments, the third channel 33 includes a ball 34. The balls 34 are provided at the first portion, and the cross-sectional area of the balls 34 is larger than the flow area of the second portion.
The ball 34 is adapted such that, in the event that the pressure in the second chamber 9 is greater than the pressure in the first chamber 32, the pressure differential causes the ball 34 to press against the second location, sealing the open end of the second location and interrupting communication between the first location and the second location.
The ball 34 is also used for pushing the ball 34 to suspend in the first part by the pressure difference under the condition that the pressure in the first cavity 32 is larger than the pressure in the second cavity 9, and the open end of the second part is opened, so that the first part is communicated with the second part.
In some embodiments, the third channel 33 provided on the piston rod 3 has a function similar to a one-way valve.
In some embodiments, the piston rod 3 is further provided with a damping hole.
In some embodiments, the hydro-pneumatic suspension includes a support ring 10. The support ring 10 is provided on the outer periphery of the first piston 4.
In some embodiments, the piston rod 3 is forced to retract into the cylinder barrel 1, when oil gas is compressed, the internal gas pressure rises, hydraulic oil in the first cavity 32 flows into the second cavity 9 through the one-way valve hole (third channel 33) and the opening gap of the support ring 10, the flow rate of the hydraulic oil is low, the generated damping acting force is small, and at the moment, the damping buffering is performed mainly by means of the reaction force generated by the compressed internal gas on the suspension.
When the piston rod 3 is stretched out of the cylinder barrel 1 by a tensile force, hydraulic oil in the second cavity 9 is compressed, the check valve (the third channel 33) is in a closed state at the moment, and the hydraulic oil can only flow into the first cavity 32 through the opening gap of the support ring 10 under the action of pressure, and at the moment, the flow rate of the hydraulic oil is high, and the generated damping acting force is large. And because the volume of the first cavity 32 is greatly increased, the volume of the second cavity 9 is reduced, the volume difference of the two cavities is larger, the volume occupied by the gas is correspondingly increased, and the internal gas pressure is reduced. At the moment, damping acting force generated by hydraulic oil is mainly used for damping and buffering the suspension.
In some embodiments, the hydro-pneumatic suspension transmits pressure through hydraulic oil in the cylinder barrel 1, inert gas in the cylinder barrel 1 is used as an elastic medium, the piston rod 3 is provided with a damping hole and a one-way valve hole, gas compression and one-way throttling of the hydraulic oil are realized through expansion and contraction of the piston rod 3, the rigidity and damping of a suspension system are changed, and the comfort, the driving smoothness and the operation stability of the whole vehicle are ensured.
In some embodiments, since the gas is generally located above the oil in the oil-gas mixture, in the use state of the oil-gas suspension, the end of the cylinder tube 1 provided with the cylinder bottom 2 is located at the upper part, and the end of the cylinder tube 1 far away from the cylinder bottom 2 is located at the lower part, so that the gas is located at one end of the elastic element 6, and vibration damping is better realized.
In some embodiments, as shown in fig. 2, the cylinder bottom 2 includes a connecting portion 22 connected to the cylinder tube 1, and further includes an extension portion 23 extending into the cylinder tube 1. The radial dimension of connecting portion 22 is greater than the radial dimension of extension 23, and connecting portion 22 forms bayonet spacing with extension 23, with the outer wall cooperation of cylinder 1.
In some embodiments, as shown in fig. 3, the connecting portion 22 of the cylinder bottom 2 is provided with a ring of first holes 24, the first holes 24 being adapted to be connected to the cylinder tube 1 by means of screws.
A ring of second holes 25 is provided in the bottom 2 inside the extension 23, the second holes 25 being intended to be connected to the connection plate 7 by means of screws, ensuring that the screws tighten the entire elastomer system on the bottom 2 through these holes.
The first holes 24 and the second holes 25 are uniformly distributed by taking the extension parts 23 as references, so that the concentricity of an elastic system, the cylinder bottom 2 and the cylinder barrel 1 is ensured.
In some embodiments, the cylinder bottom 2 and the cylinder barrel 1 are of a split structure, and the cylinder bottom 2 is provided with a first hole 24 and a second hole 25, so that the assembly of the elastomer system is ensured.
In some embodiments, the floating piston is concentric with the bore of the cylinder 1, and can slide freely and be stressed uniformly.
Some embodiments provide a mining dump truck comprising the hydro-pneumatic suspension described above.
The mining dump truck is mainly used for large-scale open-pit mines and water conservancy and hydropower engineering, and has large size and poor field maintainability, so the reliability requirement is very high.
The hydro-pneumatic suspension is an important part of the mining dump truck. When the mining dump truck runs on a road and meets hollow or raised obstacles, the piston rod of the hydro-pneumatic suspension has large expansion range and is quick, and metal direct contact is easy to occur, so that the reliability is influenced. If the vehicle suddenly leaks oil and gas in the transportation way, the oil-gas suspension is ineffective, the vehicle cannot run, the field maintenance cost is greatly increased, and a safety accident occurs in severe cases.
Aiming at the bad road conditions of the mining dump truck and the oil leakage and air leakage phenomena of the oil-gas suspension, the oil-gas suspension provided by the disclosure has the advantages that two ends of an elastic part 6 are respectively connected with a cylinder bottom 2 and a second piston 5, and the second piston 5 is in clearance fit with the inner wall of a cylinder barrel 1, is in a suspended state and can freely move in the cylinder barrel 1; when the piston rod 3 retracts, the first piston 4 and the second piston 5 are in contact with the compression elastic part 6, the whole hydro-pneumatic suspension frame plays a role in buffering and damping except that the internal gas is compressed and hydraulic oil flows, and the elastic part 6 can also play a role in buffering and damping so as to ensure that the hydro-pneumatic suspension frame can still be normally used when gas leakage and oil leakage occur.
In the description of the present invention, it should be understood that the terms "first", "second", "third", etc. are used to define the components, and are used only for the convenience of distinguishing the components, and if not otherwise stated, the terms have no special meaning, and thus, should not be construed as limiting the scope of the present invention.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims. Furthermore, the features of one embodiment may be combined with those of one or more other embodiments without explicit negatives.
Claims (15)
1. An hydro-pneumatic suspension, comprising:
a cylinder (1) configured for pre-filling with oil and gas therein;
the cylinder bottom (2) is arranged at the end part of the cylinder barrel (1);
the first end of the piston rod (3) is movably arranged in the cylinder barrel (1), and the second end of the piston rod is positioned outside the cylinder barrel (1);
the first piston (4) is arranged in the cylinder barrel (1) and is connected to the first end of the piston rod (3);
the second piston (5) is arranged in the cylinder barrel (1) and is positioned between the first piston (4) and the cylinder bottom (2); and
and the elastic piece (6) is connected with the second piston (5) and the cylinder bottom (2).
2. Hydro-pneumatic suspension according to claim 1, characterized in that it comprises a connection plate (7) arranged at the cylinder bottom (2), said elastic element (6) being connected to the cylinder bottom (2) through said connection plate (7).
3. Hydro-pneumatic suspension according to claim 1, characterized in that the spring (6) comprises a non-metallic spring or a metallic spring.
4. The hydro-pneumatic suspension as claimed in claim 1, wherein the elastic member (6) comprises a foldable elastomer, which is connected to the cylinder bottom (2) at a first end and to the second piston (5) at a second end.
5. Hydro-pneumatic suspension according to claim 1, characterized in that the second piston (5) comprises a floating piston.
6. Hydro-pneumatic suspension according to claim 1, characterized in that the cylinder bottom (2) is provided with a first channel (21) for injecting gas into the cylinder tube (1).
7. Hydro-pneumatic suspension according to claim 1, characterized in that the second end of the piston rod (3) is provided with a second channel (31) for injecting hydraulic oil into the cylinder (1).
8. Hydro-pneumatic suspension according to claim 1, characterized in that a first chamber (32) is provided inside the piston rod (3), and the first piston (4) and the second piston (5) are provided with through holes communicating the first chamber (32) with the space inside the cylinder (1).
9. Hydro-pneumatic suspension according to claim 1, characterized by comprising a guide sleeve (8) arranged at the end of the cylinder tube (1) remote from the cylinder bottom (2) for guiding the movement of the piston rod (3).
10. Hydro-pneumatic suspension according to claim 9, characterized in that a second chamber (9) is formed between the first piston (4) and the guide sleeve (8), the second chamber (9) being located between the piston rod (3) and the cylinder barrel (1).
11. Hydro-pneumatic suspension according to claim 10, wherein a first chamber (32) is provided inside the piston rod (3), and a third passage (33) communicating the first chamber (32) with the second chamber (9) is provided on the piston rod (3).
12. The hydro-pneumatic suspension of claim 11, wherein the third passage (33) comprises:
a first location communicating with the second chamber (9);
a second portion communicating the first portion with the first chamber (32), the second portion having a smaller flow area than the first portion; and
a ball (34) provided at the first portion, the ball having a cross-sectional area larger than a flow area of the second portion; the ball (34) is used for disconnecting the first position from the second position under the condition that the pressure in the second cavity (9) is larger than the pressure in the first cavity (32); -bringing the first location into communication with the second location in case the pressure in the first chamber (32) is greater than the pressure in the second chamber (9).
13. Hydro-pneumatic suspension according to claim 1, characterized in that in a situation of use of the hydro-pneumatic suspension, the end of the cylinder tube (1) provided with the cylinder bottom (2) is located at the upper part, and the end of the cylinder tube (1) remote from the cylinder bottom (2) is located at the lower part.
14. Hydro-pneumatic suspension according to claim 1, characterized in that the cylinder bottom (2) is detachably connected to the cylinder barrel (1).
15. A mining dump truck characterized by comprising the hydro-pneumatic suspension of any one of claims 1 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910115390.XA CN111559214B (en) | 2019-02-14 | 2019-02-14 | Oil gas suspension and mining dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910115390.XA CN111559214B (en) | 2019-02-14 | 2019-02-14 | Oil gas suspension and mining dump truck |
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| CN111559214A true CN111559214A (en) | 2020-08-21 |
| CN111559214B CN111559214B (en) | 2021-09-28 |
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| DE4108801A1 (en) * | 1991-03-18 | 1992-09-24 | Gerhold Dipl Ing Sames | Hydropneumatic spring damper for railed vehicles - has piston rod guide with outer flange of sleeve resting on underneath of cylinder |
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| CN104179872A (en) * | 2014-07-24 | 2014-12-03 | 三一矿机有限公司 | Variable damping oil-gas suspension cylinder and mining dump truck thereof |
| CN106183685A (en) * | 2016-08-18 | 2016-12-07 | 北京航天发射技术研究所 | Suspension, VSC and automobile |
| CN108556586A (en) * | 2018-03-13 | 2018-09-21 | 胡湘蜜 | A kind of hydro pneumatic suspension of temperature coupling automatic adjustment |
| CN108974333A (en) * | 2018-08-17 | 2018-12-11 | 中航飞机起落架有限责任公司 | A kind of full liquid shock absorber and compensation device |
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2019
- 2019-02-14 CN CN201910115390.XA patent/CN111559214B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4108801A1 (en) * | 1991-03-18 | 1992-09-24 | Gerhold Dipl Ing Sames | Hydropneumatic spring damper for railed vehicles - has piston rod guide with outer flange of sleeve resting on underneath of cylinder |
| CN101178108A (en) * | 2007-12-10 | 2008-05-14 | 郭孔辉 | Hydraulic locating type damping changing impact damper |
| CN101235860A (en) * | 2008-03-03 | 2008-08-06 | 高文生 | Inflatable built-in spring type aerostats hydraulic damper |
| CN104179872A (en) * | 2014-07-24 | 2014-12-03 | 三一矿机有限公司 | Variable damping oil-gas suspension cylinder and mining dump truck thereof |
| CN106183685A (en) * | 2016-08-18 | 2016-12-07 | 北京航天发射技术研究所 | Suspension, VSC and automobile |
| CN108556586A (en) * | 2018-03-13 | 2018-09-21 | 胡湘蜜 | A kind of hydro pneumatic suspension of temperature coupling automatic adjustment |
| CN108974333A (en) * | 2018-08-17 | 2018-12-11 | 中航飞机起落架有限责任公司 | A kind of full liquid shock absorber and compensation device |
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| CN111559214B (en) | 2021-09-28 |
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Denomination of invention: Hydro pneumatic suspension and mining dump truck Effective date of registration: 20211226 Granted publication date: 20210928 Pledgee: Xugong Group Finance Co.,Ltd. Pledgor: XCMG XUZHOU XUGONG HYDRAULIC PARTS Co.,Ltd. Registration number: Y2021320000403 |
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