CN202370922U - Unidirectional damping valve, hydraulic system and engineering machinery - Google Patents
Unidirectional damping valve, hydraulic system and engineering machinery Download PDFInfo
- Publication number
- CN202370922U CN202370922U CN2011204511686U CN201120451168U CN202370922U CN 202370922 U CN202370922 U CN 202370922U CN 2011204511686 U CN2011204511686 U CN 2011204511686U CN 201120451168 U CN201120451168 U CN 201120451168U CN 202370922 U CN202370922 U CN 202370922U
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- axial
- valve
- way damper
- damper valve
- spool
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Abstract
The utility model relates to the technical field of engineering machinery and discloses a unidirectional damping valve, a hydraulic system and engineering machinery. The unidirectional damping valve comprises an articulated bolt body, wherein the articulated bolt body is provided with an axial valve cavity and a first side hole, a valve core is a hollow column in a conical roof structure, a conical roof is provided with a damping hole and a second side hole, a first end of the axial valve cavity is provided with a limit step used for limiting the conical roof, the articulated bolt body is also provided with an axial mounting hole communicated with the axial valve cavity, and an adjusting rod which is arranged in the axial mounting hole in an axially moving mode, and an extending-in end of the adjusting rod is provided with an adjusting part used for adjusting a circulation area of the damping hole. In the use process of the unidirectional damping valve, the progress of the adjusting rod can be adjusted according to needs so as to make the adjusting part stop in different positions and change the circulation area of the damping hole of the valve core, and the stepless adjustment of a damping value is realized, so that the need that the unidirectional damping valve is applied in different occasions or working conditions is met.
Description
Technical field
The utility model relates to technical field of engineering machinery, particularly relates to a kind of one-way damper valve, hydraulic system and engineering machinery.
Background technique
Construction machinery product often adopts the executive component of hydraulic jack as hydraulic system; In hydraulic jack work engineering; That hopes piston rod usually flexible in order, steadily and reliable avoids too quick acting, in order to avoid associated mechanisms is impacted and damages; Therefore in design process, the oil inlet and oil return pipeline that is generally hydraulic jack increases the one-way damper valve of corresponding damping value.For example, in the concrete mixer design process, on arm support oil cylinder, be equiped with one-way damper valve usually, increase return oil pressure, fall down suddenly, pumping vehicle arm rack is gone up and down steadily to prevent pumping vehicle arm rack.
Please refer to Fig. 1, Fig. 1 is the structural representation of existing a kind of one-way damper valve, and is as shown in the figure; This one-way damper valve comprises hinge bolt body 1, and this hinge bolt body 1 is plugged in hydraulic tube 7 and the hydraulic element 5, is provided with packing ring 2 between hinge bolt body 1 and the hydraulic tube 7; The horizontal oil duct 11 that is provided with axial valve pocket 12 in the hinge bolt body 1 and communicates with this axial valve pocket 12; Axially be provided with spool 3 in the valve pocket 12, the main part of spool 3 is a hollow cylinder, and an end of this hollow cylinder is provided with vertex of a cone structure; Vertex of a cone structure is provided with and is used to be communicated with the damping hole of hollow cavity and horizontal oil duct 11 and the side opening that is used to be communicated with hollow cavity and axial valve pocket 12; The upper end of axial valve pocket 12 is provided with the vertex of a cone structure that is used for spool 3 and carries out spacing limited step, axially also is provided with bounding means 6 in the valve pocket 12, is provided with spring 4 between spool 3 and the bounding means.
The damping value of the one-way damper valve of such scheme immobilizes, and promptly the circulation area of damping hole is fixed, but under a lot of situations, need adopt different damping values according to different occasions or applying working condition usually, and at this moment, one-way damper valve can't satisfy above-mentioned needs.Therefore, demand urgently improving to existing one-way damper valve.
The model utility content
The utility model is intended to propose a kind of one-way damper valve, hydraulic system and engineering machinery, the problem that can't regulate with the damping value that solves resistance one-way damper valve in the existing technology.
On the one hand; This is practical to provide a kind of one-way damper valve; This one-way damper valve comprises the hinge bolt body; Said hinge bolt body is provided with and is used to install the axial valve pocket of spool and first side opening that communicates with first end of this axial valve pocket; Said spool is the hollow cylinder of vertex of a cone structure, and its vertex of a cone is provided with and is used to be communicated with first side opening and the damping hole of hollow cavity and second side opening that is used to be communicated with hollow cavity and axial valve pocket, and first end of said axial valve pocket is provided with the vertex of a cone that is used for said spool and carries out spacing limited step; It is characterized in that: said hinge bolt body also is provided with the axial mounting hole that communicates with said axial valve pocket and can be arranged at the adjustable lever in this axial mounting hole with moving axially, and the inserting end of said adjustable lever is provided with the adjusting portion that is used to regulate said damping hole circulation area.
Further, said adjusting portion is a cone structure.
Further, second end of said axial valve pocket is provided with the adjusting bounding means, and said adjusting bounding means is provided with the oil duct that is used to be communicated with said axial valve pocket and extraneous oil pipe.
Further, be provided with spring between said spool and the said adjusting bounding means.
Further, said adjusting bounding means is a screw plug.
Further, said oil duct is located at the central position of screw plug, and the cross section of said oil duct and the shape of throw are complementary.
Further, said axial mounting hole is a hierarchic structure, and said adjustable lever is the stepped stem structure that is complementary with this hierarchic structure.
Further, at least a portion of linking to each other with said axial mounting hole of said adjustable lever is through being threaded.
On the other hand, the utility model also provides a kind of hydraulic system, and this hydraulic system is provided with above-mentioned each described one-way damper valve.
On the one hand, the utility model also provides a kind of engineering machinery again, and this project machinery is provided with above-mentioned hydraulic system.
A kind of one-way damper valve that the utility model provides, the engineering machinery that is provided with the hydraulic system of this one-way damper valve and is provided with this hydraulic system; The other end at the hinge bolt body wears an axial mounting hole that communicates with axial valve pocket; Being provided with in this axial mounting hole can be along the adjustable lever that axially moves forward and backward; Adjustable lever is provided with the adjusting portion that is used to regulate the damping hole circulation area near an end of spool, in use, can regulate the process of adjustable lever as required; Make adjusting portion rest on diverse location; To change the circulation area of spool damping hole, realize step-less adjustment, thereby satisfy the needs that this one-way damper valve is applied to different occasions or applying working condition damping value.
Description of drawings
Fig. 1 is the structural representation of existing a kind of typical one-way damper valve;
Structural representation when a kind of one-way damper valve that Fig. 2 provides for the utility model first embodiment is in non-throttle;
Structural representation when Fig. 3 is in throttle for one-way damper valve shown in Figure 2;
Structural representation when a kind of one-way damper valve that Fig. 4 provides for the utility model second embodiment is in throttle.
Embodiment
In order to make those skilled in the art understand the technological scheme of the utility model better, the utility model is done further to specify below in conjunction with accompanying drawing and specific embodiment.Should be pointed out that description and the description order to concrete structure only is the explanation to specific embodiment in this part, should not be regarded as that the protection domain of the utility model is had any restriction.
Please refer to Fig. 2, Fig. 3 and Fig. 4; Wherein, Structural representation when a kind of one-way damper valve that Fig. 2 provides for the utility model first embodiment is in non-throttle; Structural representation when Fig. 3 is in throttle for one-way damper valve shown in Figure 2, the structural representation when a kind of one-way damper valve that Fig. 4 provides for the utility model second embodiment is in throttle.Combine Fig. 2, Fig. 3 and Fig. 4 to be elaborated below simultaneously, below the said noun of locality that relates to (like upper end, lower end etc.) be foundation with sight shown in scheming.
As shown in Figures 2 and 3, first embodiment's one-way damper valve comprises adjustable lever 1, nut 2, packing ring 3, hinge bolt body 4, Sealing 5, spool 7, spring 8 and regulates bounding means 9.Its position and annexation are following:
Axially mounting hole 41 is a hierarchic structure; The diameter of its upper half part is greater than the diameter of lower half portion, and correspondingly, the diameter of upper half part of adjustable lever 1 is greater than the diameter of lower half portion; Upper half part of adjustable lever 1 is provided with outside thread; Axially upper half part of mounting hole 41 is provided with internal thread, and upper half part of upper half part of adjustable lever 1 and axial mounting hole 41 is through being threaded, and adjustable lever 1 upper half part is positioned at axial mounting hole 41 outer parts and connects through packing ring 3 and nut 2 and fix.
Lower half portion of adjustable lever 1 is provided with annular groove 11, and annular groove 11 is used to install Sealing 5, and Sealing 5 can be O RunddichtringO or VL seal ring etc.
The main part of spool 7 is a hollow cylinder; First end (upper end) of hollow cylinder is provided with vertex of a cone structure; The inwall interference fit of hollow cylinder and axial valve pocket 42; Vertex of a cone structure is towards adjustable lever 1, and is respectively equipped with at the top of vertex of a cone structure and sidepiece and is used to be communicated with the damping hole 71 of first side opening 6 and hollow cavity and is used for second side opening 72 of connection shaft to valve pocket 42 and hollow cavity, and the number of this second side opening 72 can be provided with one or more (shown in the figure being three) as required; Axially the upper end of valve pocket 42 is provided with limited step; The vertex of a cone structure of spool 3 is carried out spacing, the lower end of spool 3 hollow cavities communicates with axial valve pocket 42, and axially the lower end of valve pocket 42 is used for communicating with extraneous oil circuit.
Axially the outlet port, lower end of valve pocket 42 is provided with and regulates bounding means 9; This regulates bounding means 9 is screw plug; The inwall of this screw plug and axial valve pocket 42 is through being threaded; The central position of screw plug is provided with oil duct, and the shape of cross section of this oil duct and the shape of throw are complementary, so that install and regulate through throw; Between adjusting bounding means 9 and spool 7, be provided with spring 8.
(being the inserting end of adjustable lever 1) bottom of adjustable lever 1 lower half portion is provided with adjusting portion 12; This adjusting portion 12 is to the cone structure that extends below; The shape of the damping hole 71 on this cone structure and the spool 7 is complementary, can be through this cone structure being stretched in the damping hole 71 to change the circulation area of damping hole 71.
The working principle of above-mentioned one-way damper valve is described below in conjunction with concrete operative scenario:
In the course of the work; The lower end (promptly regulating the oil duct of bounding means 9) of one-way damper valve is linked to each other with hydraulic actuator (like the rodless cavity of hydraulic jack), and when system's oil-feed, pressure oil is flowed into by first side opening 6 of hinge bolt body 4; Under the effect of pressure reduction; The resistance that promotion spool 7 overcomes spring 8 moves down, and it is spacing finally to be conditioned bounding means 9, rests on position shown in Figure 2; Pressure oil flows into through the structural damping hole 71 of spool 6 vertex of a cones and second side opening 72 simultaneously, and flows out through the oil duct of regulating bounding means 9; At this moment, one-way damper valve is in non-throttle, through regulating the pretightening force size that bounding means 9 can Regulation spring 8, and cracking pressure that can regulating spool 7.
When the hydraulic oil in the hydraulic actuator refluxed from regulating bounding means 8, under the elastic force effect of pressure reduction and spring 8, spool 7 moved up, and the limited step that finally is hinged the body of bolt 4 is spacing, rests on position shown in Figure 3; Because second side opening 72 on the spool 7 is hinged the limited step of the body of bolt 4 and keeps off below, pressure oil can only pass through the structural damping hole 71 of spool 7 vertex of a cones, and first side opening 6 through hinge bolt body 4 flows out again; Because the throttling action during 71 pairs of pressure oil oil returns of damping hole makes oil return speed obviously slow, and in oil return circuit, formed return pressure (back pressure), the action of hydraulic actuator relaxes steadily, has avoided the generation of hydraulic shock phenomenon; At this moment; One-way damper valve is in throttle; Through regulating the position of adjustable lever 1, can change the flow area of the damping hole 71 of spool 7, promptly can regulate the damping value size under the throttle; When adjusting to suitable damping value, can be the position of adjustable lever 1 is locked through nut 2 and pad 3.
Need to prove; In the foregoing description, adjusting portion 12 is a cone structure, and the effect of the circulation area of adjusting damping hole 71 is better; But in other embodiments; Also can be as required with should adjusting portion 12 being arranged to other structures, for example, it is arranged to diameter less than the damping hole aperture and can stretch into the cylindrical body in this damping hole or be arranged to diameter greater than the damping hole aperture and can seal the cylindrical body of damping hole upper end.
Need to prove that in the foregoing description, upper half part that adjustable lever 1 links to each other with axial mounting hole 41 is through being threaded; So that adjustable lever 1 is left along the end distance that axially moves around; Thereby regulate the circulation area of damping hole 71, but in other embodiments, also can adopt other mode to realize that adjustable lever 1 can move axially with respect to axial mounting hole 41 as required; For example; Between adjustable lever 1 and the axial mounting hole 41 is Spielpassung, and moving forward and backward through being arranged on hinge bolt body 4 outer controlling devices of adjustable lever 1 realizes that this controlling device is as long as can realize moving also secured adjusted bar 1.
Need to prove, in the foregoing description, link to each other through spring 8 with adjusting bounding means 9 at spool 7; Be resisted against on the limited step so that when pressure oil refluxes, accelerate to move on the spool 7, but in other embodiments, can omit the setting of spring 8 as required; For example; Another embodiment of one-way damper valve as shown in Figure 4, its each constituent element---adjustable lever 1, nut 2, packing ring 3, hinge bolt body 4, Sealing 5, first side opening 6, spool 7 and to regulate bounding means 9 said identical with above-mentioned first embodiment, but omitted spring 8; The working principle of this scheme and first embodiment are similar, do not give unnecessary details now.
A kind of one-way damper valve that the utility model first embodiment provides; Wear an axial mounting hole that communicates with axial valve pocket through the other end at the hinge bolt body, being provided with in this axial mounting hole can be along the adjustable lever that axially moves forward and backward, and adjustable lever is provided with the cone structure adjusting portion that is used to regulate the damping hole circulation area near an end of spool; In use; Can regulate the process of adjustable lever as required, make adjusting portion rest on diverse location, to change the circulation area of spool damping hole; Realization is to the step-less adjustment of damping value, thereby satisfies the needs that this one-way damper valve is applied to different occasions or applying working condition.
The utility model embodiment also provides a kind of hydraulic system; This hydraulic system is provided with the described one-way damper valve of the foregoing description; Because above-mentioned one-way damper valve has above-mentioned technique effect, therefore, the hydraulic system that is provided with this one-way damper valve also should possess the corresponding techniques effect; Its practical implementation process is similar to the above embodiments, does not give unnecessary details now.
The utility model embodiment also provides a kind of engineering machinery; This project machinery is provided with the described hydraulic system of the foregoing description; Because above-mentioned hydraulic system is provided with above-mentioned technique effect, therefore, the engineering machinery that is provided with this hydraulic system also should possess the corresponding techniques effect; Its practical implementation process is similar to the above embodiments, does not give unnecessary details now.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. one-way damper valve; Comprise hinge bolt body (4); Said hinge bolt body (4) is provided with and is used to install the axial valve pocket (42) of spool (7) and first side opening (6) that communicates with first end of this axial valve pocket (42); Said spool (7) is a hollow cylinder; First end of this hollow cylinder is provided with vertex of a cone structure; This vertex of a cone structure is provided with and is used to be communicated with first side opening (6) and the damping hole (71) of hollow cavity and second side opening (72) that is used to be communicated with hollow cavity and axial valve pocket (4); First end of said axial valve pocket (42) also is provided with the vertex of a cone structure that is used for said spool (7) and carries out spacing limited step, it is characterized in that: said hinge bolt body (4) also is provided with the axial mounting hole (41) that communicates with said axial valve pocket (42) and can be arranged at the adjustable lever (1) in this axial mounting hole (41) with moving axially, and the inserting end of said adjustable lever (1) is provided with the adjusting portion (12) that is used to regulate said damping hole (71) circulation area.
2. one-way damper valve as claimed in claim 1 is characterized in that: said adjusting portion (12) is a cone structure.
3. according to claim 1 or claim 2 one-way damper valve, it is characterized in that: second end of said axial valve pocket (42) is provided with regulates bounding means (9), and said adjusting bounding means (9) is provided with the oil duct that is used to be communicated with said axial valve pocket (42) and extraneous oil pipe.
4. one-way damper valve as claimed in claim 3 is characterized in that: be provided with spring (8) between said spool (7) and the said adjusting bounding means (9).
5. one-way damper valve as claimed in claim 3 is characterized in that: said adjusting bounding means (9) is a screw plug.
6. one-way damper valve as claimed in claim 5 is characterized in that: said oil duct is located at the central position of screw plug, and the shape of cross section of said oil duct and the shape of throw are complementary.
7. according to claim 1 or claim 2 one-way damper valve, it is characterized in that: said axial mounting hole (41) is hierarchic structure, the stepped stem structure of said adjustable lever (1) for being complementary with this hierarchic structure.
8. one-way damper valve as claimed in claim 7 is characterized in that: at least a portion that said adjustable lever (1) links to each other with said axial mounting hole (41) is through being threaded.
9. hydraulic system, it is characterized in that: said hydraulic system is provided with each described one-way damper valve of claim 1 to 8.
10. engineering machinery, it is characterized in that: said engineering machinery is provided with the described hydraulic system of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204511686U CN202370922U (en) | 2011-11-15 | 2011-11-15 | Unidirectional damping valve, hydraulic system and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204511686U CN202370922U (en) | 2011-11-15 | 2011-11-15 | Unidirectional damping valve, hydraulic system and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370922U true CN202370922U (en) | 2012-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204511686U Expired - Lifetime CN202370922U (en) | 2011-11-15 | 2011-11-15 | Unidirectional damping valve, hydraulic system and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370922U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776080A (en) * | 2015-04-08 | 2015-07-15 | 中联重科股份有限公司 | Damping valve, winching system and engineering machinery |
-
2011
- 2011-11-15 CN CN2011204511686U patent/CN202370922U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776080A (en) * | 2015-04-08 | 2015-07-15 | 中联重科股份有限公司 | Damping valve, winching system and engineering machinery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SANY AUTOMOBILE MANUFACTURING CO., LTD. Free format text: FORMER OWNER: SANYI HEAVY INDUSTRY CO LTD Effective date: 20130502 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130502 Address after: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Patentee after: SANY Automobile Manufacturing Co., Ltd. Address before: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Patentee before: Sanyi Heavy Industry Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |
|
| CX01 | Expiry of patent term |