CN202733053U - Multi-way valve structure of loader - Google Patents
Multi-way valve structure of loader Download PDFInfo
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- CN202733053U CN202733053U CN 201220381450 CN201220381450U CN202733053U CN 202733053 U CN202733053 U CN 202733053U CN 201220381450 CN201220381450 CN 201220381450 CN 201220381450 U CN201220381450 U CN 201220381450U CN 202733053 U CN202733053 U CN 202733053U
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- oil
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- pole
- arm valve
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Abstract
The utility model provides a multi-way valve structure of a loader, belongs to the technical field of engineering machineries, and solves the problems in a conventional multi-way valve that the structure is complex, manufacturing difficulty is increased, and the positioning of steel balls is not easy to control. The multi-way valve structure of the loader includes a valve body and a movable arm valve stem, wherein an oil return chamber allowing the hydraulic oil to pass, an enhancing oil chamber, a left secondary oil chamber, an oil-taking chamber, a middle oil chamber, a right secondary oil chamber and a descending oil chamber are arranged in the valve body; the movable arm valve stem sequentially penetrates the oil return chamber, the enhancing oil chamber, the left secondary oil chamber, the oil-taking chamber, the middle oil chamber, the right secondary oil chamber and the descending oil chamber; five ring-shaped grooves capable of enabling the movable arm valve stem to be matched with all the oil chambers to form a four-station and seven-communication function of a Q-shaped slide valve are formed in the movable arm valve stem; and the movable arm valve stem is provided with a floated station structure allowing all oil chambers to be communicated with one another. According to the utility model, the floated station structure of the movable arm valve stem enables all the oil chambers to be communicated with one another, so that an actuating mechanism can automatically adapt to the conditions of working road surface so as to work effectively.
Description
Technical field
The utility model belongs to technical field of engineering machinery, relates to a kind of loader multi-way valve structure.
Background technique
Multi-way valve is that plural valve piece is combined in-rises, in order to handle the motion of a plurality of executive components.Because it can be combined various valves according to the requirement of different hydraulic systems, so its compact structure, pipeline is simple, and the pressure loss is little, and easy for installation, so be widely used in engineering machinery, handling machinery and other require the loader of a plurality of actuator movements of operation.
Domestic loader generally adopts quantitative system, and the output of the flow of this system is not that the demand according to system provides corresponding flow, but manual control, so energy consumption is generally very high.Variable system is introduced in the little tonnage system of loaders, make energy saving of system, handle comfortable.But the moving arm valve pole original structure of this multi-way valve only has three, i.e. three of rising, meta and declines, and there is not floating bit in moving arm valve pole, can not satisfy the loader actual conditions.For this reason, people designed have rising, the multi-way valve of meta, decline and four bit architectures that float.
The steel ball positioning structure of using on a kind of multi-way valve such as the Chinese patent announcement [patent No.: 201020130094.1, notification number: 201610954U].It comprises and is fastened on gland and the end cap that is fixedly connected with by screw on the valve body end face, be equipped with the positioning adapter with microscler sliding-groove and arc groove in the end cap, ball seat two ends in the positioning adapter are connected with moving arm valve pole is concentric with pull rod screw respectively, also are equipped with positioning device on the ball seat.Be equipped with setting sleeve in the gland, the left end of pull bar has upper groove, and bottom portion of groove is equipped with spring and reaches the steel ball that touches with spring, also is equipped with the locking ball that touches with steel ball on the pull bar.This patent adopts the new structure that increases locking ball location, compares with existing steel ball positioning structure, can better be implemented in floating bit and the obvious induction between the position of descending, and the operability of loader is brought convenience, and has very significant use value.But this multi-way valve needs steel ball to locate the decline position of moving arm valve pole and the site of floating bit, so that the structure complicated of multi-way valve, manufacture difficulty rises, and the steel ball location also is not easy control.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, proposed a kind of simple in structure, automatically adapt to the loader multi-way valve of work pavement behavior.
The purpose of this utility model can realize by following technical proposal: a kind of loader multi-way valve structure, comprise valve body and moving arm valve pole, be provided with the oil back chamber that hydraulic oil is passed through in the described valve body, promote oil pocket, the second from left level oil pocket, oil suction chamber, middle oil pocket, right secondary oil pocket, the decline oil pocket, described moving arm valve pole passes oil back chamber successively, promote oil pocket, the second from left level oil pocket, oil suction chamber, middle oil pocket, right secondary oil pocket, the decline oil pocket, it is characterized in that, it is characterized in that having the floating bit structure that above-mentioned each oil pocket is connected together on the described moving arm valve pole.
Moving arm valve pole slides in valve body, and each oil pocket is carried out shutoff or connection, and the rising of moving arm valve pole, meta, decline and four stations that float can be realized respectively the difference action of actuator.When moving arm valve pole is in upper raise-position, realize the swing arm enhanced feature; When moving arm valve pole is in meta, realize system's meta off-load; When moving arm valve pole is in the decline position, realize swing arm decline function; When moving arm valve pole is in floating bit, promote oil pocket and communicate with oil back chamber, the second from left level oil pocket, right secondary oil pocket, decline oil pocket communicate with middle oil pocket, and each hydraulic fluid port all is in low-pressure state, and moving arm valve pole freely descends under the effect of self gravitation, realizes float function.Floating bit when work, the floating bit structure on the moving arm valve pole so that each oil pocket all communicate, thereby the situation that makes actuator can automatically adapt to the work road surface is effectively worked.
In above-mentioned loader multi-way valve structure, described floating bit structure comprises five circular grooves that axially are opened on the moving arm valve pole and be opened in the throttling groove two that the moving arm valve pole left end can make the lifting oil pocket be connected with oil back chamber when moving arm valve pole is in floating bit.Middle oil pocket all can be connected with the second from left level oil pocket and right secondary oil pocket, and hydraulic oil pours in from oil suction chamber, enters into oil pocket, and therefrom oil pocket enters into respectively the second from left level oil pocket and right secondary oil pocket again; The second from left level oil pocket again can with promote oil pocket and be connected, throttling groove two is so that promote oil back chamber and promote oil pocket and be connected, and oil back chamber can be connected with the decline oil pocket, so hydraulic oil can be from the second from left level oil pocket successively by lifting oil pocket, oil back chamber, decline oil pocket; So by the floating bit structure on the moving arm valve pole, so that each oil pocket interconnects and all is in low-pressure state.
In above-mentioned loader multi-way valve structure, offer throttling groove one on the described cell wall that is in the circular groove in the middle of the moving arm valve pole, and throttling groove one makes oil suction chamber be connected with middle oil pocket when moving arm valve pole is in floating bit.The length of throttling groove one is longer, and when guaranteeing floating bit work, flow is consistent when descending.
In above-mentioned loader multi-way valve structure, described throttling groove one has 4 and circumferentially be distributed on the middle part of moving arm valve pole.4 throttling grooves one have increased the flow between oil suction chamber and the middle oil pocket, guarantee that when floating bit is worked flow can be consistent when descending the position.
In above-mentioned loader multi-way valve structure, described throttling groove two is for being hemispheric groove, and can block the hydraulic circuit that promotes between oil pocket and the oil back chamber when moving arm valve pole is in certain position.When being in floating bit work, the hydraulic oil that promotes oil pocket can enter in the annular groove from hemispheric groove, and annular groove is connected with oil back chamber, is connected with oil back chamber so promote oil pocket this moment; When moving arm valve pole is in meta, groove with promote oil pocket and be not communicated with, so this moment moving arm valve pole blocked promote oil pocket and or oil back chamber between hydraulic circuit.
In above-mentioned loader multi-way valve structure, described throttling groove two has two and circumferentially be distributed on the left end of moving arm valve pole.Two throttling grooves two just can make hydraulic oil enter fast oil back chamber from promoting oil pocket, and can the poor or obstruction of build-up of pressure.
In above-mentioned loader multi-way valve structure, be provided with check valve assembly one between described the second from left level oil pocket and the middle oil pocket.A permission of check valve assembly hydraulic oil therefrom oil pocket enters into the second from left level oil pocket, and does not allow hydraulic oil to enter into oil pocket from the second from left level oil pocket, prevents from promoting hydraulic oil oil pocket from the second from left level oil pocket is back in the oil pocket.
In above-mentioned loader multi-way valve structure, be provided with check valve assembly two between described right secondary oil pocket and the middle oil pocket.Two permissions of check valve assembly hydraulic oil therefrom oil pocket enters into right secondary oil pocket, and does not allow hydraulic oil to enter into oil pocket from right secondary oil pocket, prevents from promoting hydraulic oil oil pocket from the second from left level oil pocket is back in the oil pocket.
In above-mentioned loader multi-way valve structure, described moving arm valve pole adopts solid construction.The moving arm valve pole distortion is little, and pressure can be transferred De Genggao.
Compared with prior art, this loader multi-way valve has the following advantages:
1, overall structure is simple, can satisfy the requirement of loader float function.
2, do not need to change valve body or moving arm valve pole, only need again process moving arm valve pole, reduced the cost of mould redesign exploitation.
3, the length dimension of throttling groove one is compared greatly, and when guaranteeing floating bit work, the flow of hydraulic oil is consistent with the position that descends.
Description of drawings
Fig. 1 is the cross-sectional schematic of the moving arm valve pole of this loader multi-way valve when being in floating bit.
Fig. 2 is the cross-sectional schematic of the moving arm valve pole of this loader multi-way valve when being in meta.
Fig. 3 is the structural representation of moving arm valve pole.
Among the figure, 1, valve body; 2, moving arm valve pole; 3, oil back chamber; 4, promote oil pocket; 5, the second from left level oil pocket; 6, oil suction chamber; 7, middle oil pocket; 8, right secondary oil pocket; 9, decline oil pocket; 10, circular groove; 11, throttling groove one; 12, throttling groove two; 13, check valve assembly one; 14, check valve assembly two.
Embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, this loader multi-way valve structure comprises valve body 1 and moving arm valve pole 2, and moving arm valve pole 2 adopts solid construction.Be provided with oil back chamber 3, lifting oil pocket 4, the second from left level oil pocket 5, oil suction chamber 6, middle oil pocket 7, right secondary oil pocket 8, decline oil pocket 9 that hydraulic oil is passed through in the valve body 1, moving arm valve pole 2 passes successively oil back chamber 3, promotes oil pocket 4, the second from left level oil pocket 5, oil suction chamber 6, middle oil pocket 7, right secondary oil pocket 8, decline oil pocket 9, it is characterized in that, offer five on the moving arm valve pole 2 and can make moving arm valve pole 2 cooperate the circular groove 10 that forms four seven logical Q type slide valve functions with each oil pocket, have the floating bit structure that each oil pocket is connected together on the moving arm valve pole 2.
Specifically, such as Fig. 1, shown in Figure 3, floating bit structure floating bit structure comprises five circular grooves 10 that axially are opened on the moving arm valve pole 2 and be opened in the throttling groove 2 12 that moving arm valve pole 2 left ends can make lifting oil pocket 4 be connected with oil back chamber 3 when moving arm valve pole 2 is in floating bit.Be on the cell wall of the circular groove 10 in the middle of the moving arm valve pole 2 and offer throttling groove 1, and throttling groove 1 makes oil suction chamber 6 be connected with middle oil pocket 7 when moving arm valve pole 2 is in floating bit.Throttling groove 1 is located between two adjacent circular grooves 10 and two adjacent circular grooves 10 can be interconnected, and throttling groove 1 has 4 and circumferentially be distributed on the middle part of moving arm valve pole 2 in the present embodiment.Throttling groove 2 12 is for being hemispheric groove, and can block the hydraulic circuit that promotes between oil pocket 4 and the oil back chamber 3 when moving arm valve pole 2 is in certain position.Be provided with check valve assembly 1 between the second from left level oil pocket 5 and the middle oil pocket 7, be provided with check valve assembly 2 14 between right secondary oil pocket 8 and the middle oil pocket 7.
As shown in Figure 1, moving arm valve pole 2 is in the floating position, oil suction chamber 6 is connected with middle oil pocket 7 by throttling groove 1, the hydraulic oil of middle oil pocket 7 enters into the second from left level oil pocket 5 by check valve assembly 1, the second from left level oil pocket 5 also is connected with lifting oil pocket 4, promote oil pocket 4 and be connected with oil back chamber 3 by throttling groove 12, oil back chamber 3 also is connected with decline oil pocket 9.The hydraulic oil of middle oil pocket 7 can enter right secondary oil pocket 8 by check valve assembly 2 14.So all oil pockets all are connected, actuator can automatically adapt to the situation on work road surface and carry out effective operation.
As shown in Figure 2, moving arm valve pole 2 is in the meta position, and each oil pocket all is not connected, and realizes system's meta off-load.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more used 1, valve body; 2, moving arm valve pole; 3, oil back chamber; 4, promote oil pocket; 5, the second from left level oil pocket; 6, oil suction chamber; 7, middle oil pocket; 8, right secondary oil pocket; 9, decline oil pocket; 10, circular groove; 11, throttling groove one; 12, throttling groove two; 13, check valve assembly one; 14, the second-class term of check valve assembly, but do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (9)
1. loader multi-way valve structure, comprise valve body (1) and moving arm valve pole (2), be provided with the oil back chamber (3) that hydraulic oil is passed through in the described valve body (1), promote oil pocket (4), the second from left level oil pocket (5), oil suction chamber (6), middle oil pocket (7), right secondary oil pocket (8), decline oil pocket (9), described moving arm valve pole (2) passes oil back chamber (3) successively, promote oil pocket (4), the second from left level oil pocket (5), oil suction chamber (6), middle oil pocket (7), right secondary oil pocket (8), decline oil pocket (9), it is characterized in that having the floating bit structure that above-mentioned each oil pocket is connected together when moving arm valve pole (2) on the described moving arm valve pole (2).
2. loader multi-way valve structure according to claim 1, it is characterized in that described floating bit structure comprises five circular grooves (10) that axially are opened on the moving arm valve pole and is opened in moving arm valve pole (2) left end can make lifting oil pocket (4) be connected with oil back chamber (3) when moving arm valve pole (2) when being in floating bit throttling groove two (12).
3. loader multi-way valve structure according to claim 2, it is characterized in that, offer throttling groove one (11) on the described cell wall that is in the circular groove (10) in the middle of the moving arm valve pole (2), and when moving arm valve pole (2) when being in floating bit throttling groove one (11) oil suction chamber (6) is connected with middle oil pocket (7).
4. loader multi-way valve structure according to claim 3 is characterized in that, described throttling groove one (11) has 4 and circumferentially be distributed on the middle part of moving arm valve pole (2).
5. according to claim 2 or 3 or 4 described loader multi-way valve structures, it is characterized in that, described throttling groove two (12) is for being hemispheric groove, and can block the hydraulic circuit that promotes between oil pocket (4) and the oil back chamber (3) when being in certain position when moving arm valve pole (2).
6. loader multi-way valve structure according to claim 5 is characterized in that, described throttling groove two (12) has two and circumferentially be distributed on the left end of moving arm valve pole (2).
7. loader multi-way valve structure according to claim 6 is characterized in that, is provided with check valve assembly one (13) between described the second from left level oil pocket (5) and the middle oil pocket (7).
8. loader multi-way valve structure according to claim 7 is characterized in that, is provided with check valve assembly two (14) between described right secondary oil pocket (8) and the middle oil pocket (7).
9. loader multi-way valve structure according to claim 8 is characterized in that, described moving arm valve pole (2) adopts solid construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220381450 CN202733053U (en) | 2012-08-02 | 2012-08-02 | Multi-way valve structure of loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220381450 CN202733053U (en) | 2012-08-02 | 2012-08-02 | Multi-way valve structure of loader |
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| Publication Number | Publication Date |
|---|---|
| CN202733053U true CN202733053U (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220381450 Expired - Lifetime CN202733053U (en) | 2012-08-02 | 2012-08-02 | Multi-way valve structure of loader |
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| Country | Link |
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| CN (1) | CN202733053U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533866A (en) * | 2015-01-15 | 2015-04-22 | 浙江海宏液压科技股份有限公司 | Hydraulic speed regulating valve |
| CN105822794A (en) * | 2016-05-17 | 2016-08-03 | 华南理工大学 | Valve |
| CN106062383A (en) * | 2014-04-11 | 2016-10-26 | Ｋｙｂ株式会社 | Valve structure |
| CN109519429A (en) * | 2018-11-16 | 2019-03-26 | 中国航发西安动力控制科技有限公司 | Change-over valve core |
-
2012
- 2012-08-02 CN CN 201220381450 patent/CN202733053U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106062383A (en) * | 2014-04-11 | 2016-10-26 | Ｋｙｂ株式会社 | Valve structure |
| CN106062383B (en) * | 2014-04-11 | 2017-12-05 | Ｋｙｂ株式会社 | Valve constructs |
| CN104533866A (en) * | 2015-01-15 | 2015-04-22 | 浙江海宏液压科技股份有限公司 | Hydraulic speed regulating valve |
| CN105822794A (en) * | 2016-05-17 | 2016-08-03 | 华南理工大学 | Valve |
| CN109519429A (en) * | 2018-11-16 | 2019-03-26 | 中国航发西安动力控制科技有限公司 | Change-over valve core |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |