CN203413163U - Manual control reversing valve for lorry-mounted crane - Google Patents
Manual control reversing valve for lorry-mounted crane Download PDFInfo
- Publication number
- CN203413163U CN203413163U CN201320434746.4U CN201320434746U CN203413163U CN 203413163 U CN203413163 U CN 203413163U CN 201320434746 U CN201320434746 U CN 201320434746U CN 203413163 U CN203413163 U CN 203413163U
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- groove
- oil
- pressure tank
- load
- valve body
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Abstract
The utility model discloses a manual control reversing valve for a lorry-mounted crane and belongs to the reversing valve for engineering machinery. The manual control reversing valve comprises a valve body and a valve core, wherein the valve core is positioned in a valve core hole and can do axial movement in the valve core hole of the valve body; the valve core hole is internally provided with a left oil returning groove, a first loading groove, a left second pressure groove, a left first pressure groove, a central oil returning groove, a right first pressure groove, a right second pressure groove, a second loading groove, a right oil returning groove and a sealing groove in sequence and at interval, and all the grooves are ring-shaped under-cutting grooves; the left oil returning groove, the central oil returning groove, the right oil returning groove and an oil returning port are communicated by an oil transportation channel of the valve body; the valve core is in the shape of a cylindrical shaft and is provided with a ring-shaped groove, and ring-shaped steps are arranged among the ring-shaped groove; the surface contact is adopted between the ring-shaped steps of the valve core and the valve core hole. The manual control reversing valve disclosed by the utility model has the advantages that the pressure loss and internal leakage of the reversing valve while being communicated with oil paths are lower, the reversing of the valve core is stable, other additional elements are not needed, the structure is simple and compact, the volume is smaller and the price is low.
Description
Technical field
The utility model relates to the selector valve of engineering machinery, is specifically related to a kind of lorry-mounted crane with manually controlling selector valve.
Background technique
In engineering machinery Zhong，Wei Dui operation mechanism, carry out motion control, usually need to use selector valve, by moving axially of change-over valve core, the switching of oil circuit control, realizes moving back and forth of operation mechanism.At present, manually control selector valve simple because of its price material benefit, compact structure, technique, on lorry-mounted crane, application is wider.But this hand-operated direction valve is limited to physical dimension, can only accomplish three working positions, cannot the motion of operation mechanism be done further and accurately be controlled.In present truck crane, have and use the hand-operated direction valve with five working positions, can realize the speed motion of operation mechanism, utilization efficiency is higher, but its controlling method is complicated, and physical dimension is larger, cannot on lorry-mounted crane, copy use.
Model utility content
The purpose of this utility model is to provide a kind of lorry-mounted crane with manually controlling selector valve, the hand-operated direction valve controlling method that solves present five working positions is complicated, physical dimension is larger, cannot on lorry-mounted crane, copy the problem of use, realize five controls of lorry-mounted crane operation mechanism.
The purpose of this utility model is achieved in that this selector valve comprises valve body and spool, and described spool is positioned at the spool bore of valve body, and described spool can axially move in the spool bore of described valve body;
On this valve body, there are left oil-return groove, the first load groove, left the second pressure tank, left the first pressure tank, center oil-return groove, right the first pressure tank, right the second pressure tank, the second load groove, right oil-return groove, the first load hydraulic fluid port, the second load hydraulic fluid port, the second pressure hydraulic fluid port, the first pressure hydraulic fluid port, return opening, seal groove, oil transportation channel; In spool bore, sequence interval is arranged with left oil-return groove, the first load groove, left the second pressure tank, left the first pressure tank, center oil-return groove, right the first pressure tank, right the second pressure tank, the second load groove, right oil-return groove, seal groove, and all grooves are annular undercut groove;
Described left oil-return groove, center oil-return groove, right oil-return groove, return opening are communicated with each other by valve body oil transportation channel; A described left side the second pressure tank, right the second pressure tank, the second pressure hydraulic fluid port are communicated with each other by valve body oil transportation channel; A described left side the first pressure tank, right the first pressure tank, the first pressure hydraulic fluid port are communicated with each other by valve body oil transportation channel; Described the first load groove, the first load hydraulic fluid port are communicated with each other by oil transportation channel; Described the second load groove, the second load hydraulic fluid port are communicated with each other by oil transportation channel;
Described spool is cylinder axis shape, is provided with circular groove, is ring-shaped step between described circular groove; Between described spool ring-shaped step and described spool bore for face contacts.
Beneficial effect, owing to having adopted such scheme, the utility model is by arranging valve body annular undercut groove width, span, spool ring-shaped step width, span, lead to oily passage by valve body different undercut grooves, connection oil outer road binders mouth communicated with each other, and applies it on lorry-mounted crane, can be according to the diverse location of spool, accomplish the effect of meta off-load, single oil pump feed, Dual-pump flow-converging, more flexibly precisely, safety is with efficient and deposit in the motion control that makes lorry-mounted crane.The hand-operated direction valve controlling method that has solved present five working positions is complicated, and physical dimension is larger, cannot on lorry-mounted crane, copy the problem of use, realizes five controls of lorry-mounted crane operation mechanism.
Advantage: this is manually controlled in selector valve between spool and valve body according to different relative positions, can form five working positions, realize being switched on or switched off of oil circuit that this valve controls, connect the oil circuit pressure loss less, disconnect oil circuit internal leakage also less, spool commutation steadily, without other extra elements, simple and compact for structure, small volume, cheap.
Accompanying drawing explanation
The valve body structure figure that Fig. 1 provides for the utility model embodiment.
Fig. 2 is the A-A sectional structure chart of Fig. 1.
Fig. 3 is the structural drawing of the utility model spool.
Fig. 4 is the structure graph that spool of the present utility model is positioned at valve body neutral position.
Fig. 5 is the structure graph that spool of the present utility model is positioned at valve body leftward position.
Fig. 6 is the structure graph that spool of the present utility model is positioned at valve body left position.
Fig. 7 is the structure graph that spool of the present utility model is positioned at valve body right positions.
Fig. 8 is the structure graph that spool of the present utility model is positioned at valve body right end position.
Fig. 9 is five of the present utility model and manually controls selector valve schematic diagram.
In figure, 1, left oil-return groove; 2, the first load groove; 3, left the second pressure tank; 4, left the first pressure tank; 5, center oil-return groove; 6, right the first pressure tank; 7, right the second pressure tank; 8, the second load groove; 9, right oil-return groove; 10, the first load hydraulic fluid port; 11, the second load hydraulic fluid port; 12, the second pressure hydraulic fluid port; 13, the first pressure hydraulic fluid port; 14, return opening; 15, seal groove; 16, oil transportation channel; 17, main valve plug.
Embodiment
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part.
Embodiment 1: this selector valve comprises valve body and spool, and described spool is positioned at the spool bore of valve body, and described spool can axially move in the spool bore of described valve body.
On valve body, there are left oil-return groove 1, the first load groove 2, left the second pressure tank 3, left the first pressure tank 4, center oil-return groove 5, right the first pressure tank 6, right the second pressure tank 7, the second load groove 8, right oil-return groove 9, the first load hydraulic fluid port 10, the second load hydraulic fluid port 11, the second pressure hydraulic fluid port 12, the first pressure hydraulic fluid port 13, return opening 14, seal groove 15, oil transportation channel 16; In spool bore, sequence interval is arranged with left oil-return groove 1, the first load groove 2, left the second pressure tank 3, left the first pressure tank 4, center oil-return groove 5, right the first pressure tank 6, right the second pressure tank 7, the second load groove 8, right oil-return groove 9, seal groove 15, and all grooves are annular undercut groove;
Described left oil-return groove 1, center oil-return groove 5, right oil-return groove 9, return opening 14 are communicated with each other by valve body oil transportation channel, and described return opening 14 is connected with outside off-load oil circuit T; A described left side the second pressure tank 3, right the second pressure tank 7, the second pressure hydraulic fluid port 12 are communicated with each other by valve body oil transportation channel, and described the second pressure hydraulic fluid port 12 is connected with external pressure oil circuit P2; A described left side the first pressure tank 4, right the first pressure tank 6, the first pressure hydraulic fluid port 13 are communicated with each other by valve body oil transportation channel, and described the first pressure hydraulic fluid port 13 is connected with external pressure oil circuit P1; Described the first load groove 2, the first load hydraulic fluid port 10 are communicated with each other by oil transportation channel, and described the first load hydraulic fluid port 10 is connected with external loading oil circuit A; Described the second load groove 8, the second load hydraulic fluid port 11 are communicated with each other by oil transportation channel, and described the second load hydraulic fluid port 11 is connected with external loading oil circuit B;
Described spool is cylinder axis shape, is provided with circular groove, is ring-shaped step between described circular groove; Between described spool ring-shaped step and described spool bore for face contacts.
The numerical value of described valve body annular undercut groove width, span, described spool ring-shaped step width, span is more, cannot be exhaustive, but its numerical value pattern of wants diagram fit dimension, and meet following technological scheme:
In Fig. 4, described spool is when described valve body neutral position, and described left the first pressure tank 4, center oil-return groove 5, right the first pressure tank 6 are communicated with each other, and final described external pressure oil circuit P1 and outside off-load oil circuit T connect; Described left oil-return groove 1, the first load groove 2, left the second pressure tank 3, right the second pressure tank 7, the second load groove 8, right oil-return groove 9 are communicated with each other, and final external pressure oil circuit P2, external loading oil circuit A, external loading oil circuit B and outside off-load oil circuit T connect.
In Fig. 5, described spool is when described valve body leftward position I, and described the first load groove 2, left the second pressure tank 3, right the second pressure tank 7 are communicated with each other, and final external pressure oil circuit P2 and external loading oil circuit A connect; Described the second load groove 8, right oil-return groove 9 are communicated with each other, and final external loading oil circuit B and outside off-load oil circuit T connect; Described left the first pressure tank 4, center oil-return groove 5, right the first pressure tank 6 are communicated with each other, and final described external pressure oil circuit P1 and outside off-load oil circuit T connect.
In Fig. 6, described spool is when described valve body leftward position II, described the first load groove 2, left the second pressure tank 3, left the first pressure tank 4, right the first pressure tank 6, right the second pressure tank 7 are communicated with each other, and final external pressure oil circuit P2, external pressure oil circuit P1 and external loading oil circuit A connect; Described the second load groove 8 is communicated with each other with right oil-return groove 9, and final, external loading oil circuit B and outside off-load oil circuit T connect.
In Fig. 7, described spool is when described valve body right positions I, and described left the second pressure tank 3, right the second pressure tank 7, the second load groove 8 are communicated with each other, and final external pressure oil circuit P2 and external loading oil circuit B connect; Described left oil-return groove 1, the first load groove 2 are communicated with each other, and final external loading oil circuit A and outside off-load oil circuit T connect; Described left the first pressure tank 4, center oil-return groove 5, right the first pressure tank 6 are communicated with each other, and final described external pressure oil circuit P1 and outside off-load oil circuit T connect.
In Fig. 8, described spool is when described valve body right positions II, described left the second pressure tank 3, left the first pressure tank 4, right the first pressure tank 6, right the second pressure tank 7, the second load groove 8 are communicated with each other, and final external pressure oil circuit P2, external pressure oil circuit P1 and external loading oil circuit B connect; Described left oil-return groove 1, the first load groove 2 are communicated with each other, final, and external loading oil circuit A and outside off-load oil circuit T connect.
Claims (1)
1. lorry-mounted crane, with manually controlling a selector valve, is characterized in that: this selector valve comprises valve body and spool, and described spool is positioned at the spool bore of valve body, and described spool can axially move in the spool bore of described valve body;
On valve body, there are left oil-return groove, the first load groove, left the second pressure tank, left the first pressure tank, center oil-return groove, right the first pressure tank, right the second pressure tank, the second load groove, right oil-return groove, the first load hydraulic fluid port, the second load hydraulic fluid port, the second pressure hydraulic fluid port, the first pressure hydraulic fluid port, return opening, seal groove, oil transportation channel; In spool bore, sequence interval is arranged with left oil-return groove, the first load groove, left the second pressure tank, left the first pressure tank, center oil-return groove, right the first pressure tank, right the second pressure tank, the second load groove, right oil-return groove, seal groove, and all grooves are annular undercut groove;
Described left oil-return groove, center oil-return groove, right oil-return groove, return opening are communicated with each other by valve body oil transportation channel; A described left side the second pressure tank, right the second pressure tank, the second pressure hydraulic fluid port are communicated with each other by valve body oil transportation channel; A described left side the first pressure tank, right the first pressure tank, the first pressure hydraulic fluid port are communicated with each other by valve body oil transportation channel; Described the first load groove, the first load hydraulic fluid port are communicated with each other by oil transportation channel; Described the second load groove, the second load hydraulic fluid port are communicated with each other by oil transportation channel;
Described spool is cylinder axis shape, is provided with circular groove, is ring-shaped step between described circular groove; Between described spool ring-shaped step and described spool bore for face contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320434746.4U CN203413163U (en) | 2013-07-22 | 2013-07-22 | Manual control reversing valve for lorry-mounted crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320434746.4U CN203413163U (en) | 2013-07-22 | 2013-07-22 | Manual control reversing valve for lorry-mounted crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203413163U true CN203413163U (en) | 2014-01-29 |
Family
ID=49976052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320434746.4U Withdrawn - After Issue CN203413163U (en) | 2013-07-22 | 2013-07-22 | Manual control reversing valve for lorry-mounted crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203413163U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352992A (en) * | 2013-07-22 | 2013-10-16 | 徐州徐工随车起重机有限公司 | Manual control reversing valve for lorry-mounted crane |
-
2013
- 2013-07-22 CN CN201320434746.4U patent/CN203413163U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352992A (en) * | 2013-07-22 | 2013-10-16 | 徐州徐工随车起重机有限公司 | Manual control reversing valve for lorry-mounted crane |
| CN103352992B (en) * | 2013-07-22 | 2015-05-13 | 徐州徐工随车起重机有限公司 | Manual control reversing valve for lorry-mounted crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140129 Effective date of abandoning: 20150513 |
|
| RGAV | Abandon patent right to avoid regrant |