CN203130645U - Safety speed-limiting valve of forklift - Google Patents
Safety speed-limiting valve of forklift Download PDFInfo
- Publication number
- CN203130645U CN203130645U CN 201320101597 CN201320101597U CN203130645U CN 203130645 U CN203130645 U CN 203130645U CN 201320101597 CN201320101597 CN 201320101597 CN 201320101597 U CN201320101597 U CN 201320101597U CN 203130645 U CN203130645 U CN 203130645U
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- hole
- valve core
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Forklifts And Lifting Vehicles (AREA)
- Taps Or Cocks (AREA)
Abstract
A safety speed-limiting valve of a forklift comprises a valve body and a valve cover. The valve cover is fixed on the valve body in a screw joint mode; a valve sleeve is inserted and sleeved in the valve body; a valve core is inserted and sleeved in the valve sleeve; one end of a spring is pressed on the valve cover and the other end of the spring is pressed on the valve core; a flow blocking board is inserted and sleeved on the valve core; a locking ring which is locked on the valve core presses the flow blocking board; the flow blocking board presses a valve core step of the valve core; an inclined plane is formed on the rear portion of a valve core center hole of the valve core; a steel ball is placed on the rear portion of the valve core center hole; a lateral direction strip hole which is formed on the rear portion of the valve core is communicated with a valve sleeve center hole of the valve sleeve; a valve sleeve main oil hole which is formed on the valve sleeve is communicated with a valve core main oil hole of the valve core; and the valve core main oil hole is communicated with the valve core center hole. The safety speed-limiting valve of the forklift can ensure that the oil return speed of the forklift is smooth and the oil inlet speed of the forklift is rapid at the same time.
Description
Technical field:
The utility model relates to the speed limited valve technical field, the safety speed-limit valve of using more specifically to a kind of fork truck.
Background technique:
The general structure of existing fork truck valve is all comparatively simple, only adopts the structure of reduction valve, during work, the loop quick-acting fruits of oil of speed limited valve control fork truck are not ideal enough, if loop oil speed can not descend gently, the goods that then is loaded in fork truck easily bumps, the Security that causes fork truck to use.
The model utility content:
The purpose of this utility model is exactly the deficiency at prior art, and a kind of fork truck safety speed-limit valve is provided, and it can guarantee that the fork truck oil return speed is steadily slow, and the speed of fork truck oil-feed simultaneously is quick.
Technology solution of the present utility model is as follows:
Fork truck safety speed-limit valve, comprise valve body and valve gap, valve gap is spirally connected and is fixed on the valve body, be inserted with valve pocket in the valve body, be inserted with spool in the valve pocket, spring one end is pressed on the valve gap, the other end is pressed on the spool, the spool upper sleeve has flow-stopping plate, collar is fastened on the spool, and collar is being pressed flow-stopping plate, and flow-stopping plate is pressed on the spool step of spool;
The rear portion, center spool hole of spool forms the inclined-plane, and steel ball places the rear portion in center spool hole, and the valve pocket center hole that the rear portion of spool forms side direction cylindrical void and valve pocket connects mutually;
The spool main oil-hole that forms valve pocket main oil-hole and spool on the valve pocket connects mutually, and the spool main oil-hole connects mutually with the center spool hole.
Clamping has seal ring between described valve body and the valve gap.
Described flow-stopping plate is to form flow-stopping plate center hole and several flow-stopping plate aperture compositions around the flow-stopping plate center hole on the ring body.
The beneficial effects of the utility model are:
Generally have only an oily passage of turnover in the prior art, so oil-feed is slow, and the utility model oil-feed has two passages, and oil return has only a passage, so it can guarantee that the fork truck oil return speed is steadily slow, oil-feed speed is quick.
Description of drawings:
Structural representation when Fig. 1 is the utility model oil-feed
Structural representation when Fig. 2 is the utility model oil return
Fig. 3 is the structural representation of flow-stopping plate
Among the figure: 1, valve body; 2, valve gap; 3, valve pocket; 4, spool; 5, spring; 6, flow-stopping plate; 7, collar; 8, steel ball; 9, seal ring.
Embodiment:
Embodiment: see shown in Fig. 1 to 3, fork truck safety speed-limit valve, comprise valve body 1 and valve gap 2, valve gap 2 is spirally connected and is fixed on the valve body 1, is inserted with valve pocket 3 in the valve body 1, be inserted with spool 4 in the valve pocket 3, spring 5 one ends are pressed on the valve gap 2, the other end is pressed on the spool 4, and spool 4 upper sleeves have flow-stopping plate 6, and collar 7 is fastened on the spool 4, collar 7 is being pressed flow-stopping plate 6, and flow-stopping plate 6 is pressed on the spool step 41 of spool 4;
42 rear portions, center spool hole of spool 4 form inclined-plane 421, and steel ball 8 places the rear portion in center spool hole 42, and the valve pocket center hole 31 that the rear portion of spool 4 forms side direction cylindrical void 43 and valve pocket 3 connects mutually;
The spool main oil-hole 44 that forms valve pocket main oil-hole 32 and spool 4 on the valve pocket 3 connects mutually, and spool main oil-hole 44 connects mutually with center spool hole 42.
Clamping has seal ring 9 between described valve body 1 and the valve gap 2.
Described flow-stopping plate 6 is for forming flow-stopping plate center hole 62 and several flow-stopping plate aperture 63 compositions around flow-stopping plate center hole 62 on the ring body 61.
Working principle: see shown in Figure 1, during its oil-feed, steel ball 8 moves backward and is blocking up that head that valve pocket center hole 31 is positioned at close spool 4, oil enters valve pocket center hole 31 from side direction cylindrical void 43, oil enters valve pocket center hole 31 from spool main oil-hole 44 and valve pocket main oil-hole 32 simultaneously, is convenient to oil like this and enters fast.Particularly steel ball does not need to support with spring, allows it directly go to valve pocket center hole 31 and the center spool hole 42 of stifled front and back.During its oil-feed, there is side direction cylindrical void 43 to enter 31 1 passages of valve pocket center hole, also has oil to enter valve pocket center hole 31 from spool main oil-hole 44 and valve pocket main oil-hole 32 and be the second passage.
See shown in Figure 2, during its oil return, steel ball 8 is blocking up center spool hole 42, oil can only enter center spool hole 42 from valve pocket main oil-hole 32 and spool main oil-hole 44, spool 4 moves right simultaneously, the passage of valve pocket main oil-hole 32 and spool main oil-hole 44 is more and more littler, thereby reaches the slow oil return of balance, guarantees the fork truck job security.
Claims (3)
1. fork truck safety speed-limit valve, comprise valve body (1) and valve gap (2), valve gap (2) is spirally connected and is fixed on the valve body (1), it is characterized in that: be inserted with valve pocket (3) in the valve body (1), be inserted with spool (4) in the valve pocket (3), spring (5) one ends are pressed on the valve gap (2), the other end is pressed on the spool (4), spool (4) upper sleeve has flow-stopping plate (6), collar (7) is fastened on the spool (4), collar (7) is being pressed flow-stopping plate (6), and flow-stopping plate (6) is pressed on the spool step (41) of spool (4);
The rear portion, center spool hole (42) of spool (4) forms inclined-plane (421), and steel ball (8) places the rear portion of center spool hole (42), and the valve pocket center hole (31) that the rear portion of spool (4) forms side direction cylindrical void (43) and valve pocket (3) connects mutually;
The spool main oil-hole (44) that forms valve pocket main oil-hole (32) and spool (4) on the valve pocket (3) connects mutually, and spool main oil-hole (44) connects mutually with center spool hole (42).
2. fork truck safety speed-limit valve according to claim 1, it is characterized in that: clamping has seal ring (9) between valve body (1) and the valve gap (2).
3. fork truck safety speed-limit valve according to claim 1 is characterized in that: flow-stopping plate (6) is for forming flow-stopping plate center hole (62) and several flow-stopping plate aperture (63) compositions around flow-stopping plate center hole (62) on the ring body (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320101597 CN203130645U (en) | 2013-03-06 | 2013-03-06 | Safety speed-limiting valve of forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320101597 CN203130645U (en) | 2013-03-06 | 2013-03-06 | Safety speed-limiting valve of forklift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130645U true CN203130645U (en) | 2013-08-14 |
Family
ID=48938625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320101597 Expired - Fee Related CN203130645U (en) | 2013-03-06 | 2013-03-06 | Safety speed-limiting valve of forklift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203130645U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678107A (en) * | 2017-01-19 | 2017-05-17 | 宁波江北宇洲液压设备厂 | Speed limiting valve special for forklift truck |
| CN109611398A (en) * | 2018-11-14 | 2019-04-12 | 龙工（江西）机械有限公司 | Fork truck speed-limiting protection valve |
| CN109630490A (en) * | 2018-12-07 | 2019-04-16 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of Hydraulic Adjustable Speed valve |
-
2013
- 2013-03-06 CN CN 201320101597 patent/CN203130645U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678107A (en) * | 2017-01-19 | 2017-05-17 | 宁波江北宇洲液压设备厂 | Speed limiting valve special for forklift truck |
| CN106678107B (en) * | 2017-01-19 | 2018-01-09 | 宁波江北宇洲液压设备厂 | A kind of special governor valve of fork truck |
| CN109611398A (en) * | 2018-11-14 | 2019-04-12 | 龙工（江西）机械有限公司 | Fork truck speed-limiting protection valve |
| CN109630490A (en) * | 2018-12-07 | 2019-04-16 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of Hydraulic Adjustable Speed valve |
| CN109630490B (en) * | 2018-12-07 | 2020-12-25 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Hydraulic speed regulating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20190306 |