CN202251189U - Non-return valve having slope claw trolley hydraulic system for bridge type reclaimer - Google Patents
Non-return valve having slope claw trolley hydraulic system for bridge type reclaimer Download PDFInfo
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- CN202251189U CN202251189U CN2011203643423U CN201120364342U CN202251189U CN 202251189 U CN202251189 U CN 202251189U CN 2011203643423 U CN2011203643423 U CN 2011203643423U CN 201120364342 U CN201120364342 U CN 201120364342U CN 202251189 U CN202251189 U CN 202251189U
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Abstract
Provided is a non-return valve having a slope claw trolley hydraulic system for a bridge type reclaimer, comprising a cone-shaped valve core which is disposed on a valve body and includes a shaft sleeve, a valve core guide bar integrated with an inner hexagonal plug screw, and a sealing device. The non-return valve is characterized in that the specification of a return spring sleeving between the cone-shaped valve core and the valve core guide bar needs to be set with a range based on a system. The specification scope of the return spring is that a steel wire d is 2.5-3.5mm; a pitch diameter D of a spring is 16.5-17.5mm; a free length L0 is 33.5mm, and an effective loop n is 6-8. Preferably, the steel wire d equals to 3mm; the pitch diameter D of a spring equals to 17mm; the free length L0 equals to 33.5mm; the effective loop equals to 7. The non-return valve is advantageous in that through replacing the specification of a return spring, the cracking pressure of a non-return valve can be increased, and the non-return valve can be applied in a hydraulic system; compared with a conventional mode, the hydraulic control system is greatly simplified, control valve members are reduced and cost is decreased; convenience is brought to the design, installation, and maintenance of the hydraulic system; a long-term and reliable work of the system can be guaranteed.
Description
Technical field the utility model relates generally to a kind of charging crane, particularly relates to a kind of materials handling machinery.
The main application area of background technique material taking machine tool mainly is that heaps such as large-scale coal harbour, ore terminal, thermal power plant, mine, Iron And Steel Plant, cement plant are got the stock ground, is mainly used in bulk material and carries.The bridge-type material taking machine also is wherein a kind of very common material equipment of getting, and wherein major part all drives the claw dolly with hydraulic jack.A lot of rake teeths of claw are paddling back and forth on the material top layer, and homogenizing bulk material, and make its even whereabouts is transported on the belt through scraper chain and transfers out.The claw dolly drives and is one of key component of this kind material taking machine equipment.Because bridge-type scraper reclaimer claw dolly is on gradient case beam orbit, drive action back and forth through oil cylinder.The claw dolly has constant weight, under action of gravity, will produce certain component along the case beam orbit.Under nature, the trend of very strong downslide is arranged.For balancing the load force of this downslide, the conventional process mode is to add modes such as hydraulic lock or equilibrium valve to control.This mode cost is high, system complex, and the difficulty of repair and maintenance is big simultaneously
Model utility content the utility model technical problem to be solved is: find out a kind of simply, reliable, practical, and the low mechanism of cost balances the claw dolly and produces the load force that glides along crossbeam in action of gravity.
For solving the problems of the technologies described above; The utility model proposes following technological scheme: a kind of one-way valve that is used for the little vehicle hydraulic system of bridge-type material taking machine band slope claw; Be included in the taper valve core that has axle sleeve in the valve body; The spool guide rod that is connected as a single entity with hexagonal socket head plug, and seal arrangement, its feature is: the specification that is enclosed within the Returnning spring between taper valve core and the spool guide rod is according to system's needs setting range.The specification limit of used Returnning spring is in the utility model: steel wire d=2.5mm～3.5mm, mean diameter of coil D=16.5～17.5mm, free length L0=33.5mm, number of active coils n=6～8.The specification of Returnning spring (11) is preferably: steel wire d=3mm, mean diameter of coil D=17mm, free length L0=33.5mm, number of active coils n=7.
Adopted the one-way valve that is used for the little vehicle hydraulic system of bridge-type material taking machine band slope claw of above technological scheme, through changing the Returnning spring specification, to increase the mode of one-way valve cracking pressure; Apply it in the middle of the hydraulic system; With traditional approach the hydraulic driving control of band slope bridge-type scraper reclaimer claw dolly is compared, simplified hydraulic control system to a great extent, reduced the control valve member; Cost reduces; Also be Design of Hydraulic System, installation simultaneously, maintenance brings convenience with maintenance, and the system that can guarantee works reliably and with long-term stably.
Description of drawings:
Fig. 1 is the principle schematic that the utility model is used for the one-way valve of the little vehicle hydraulic system of bridge-type material taking machine band slope claw
Fig. 2 is preface 4 one-way valve structures figure among Fig. 1
Among the figure: 1 relief valve, 2 electro-hydraulic reversing valves, 3 one-way valves, 4 one-way valves, 5 oil cylinders, 6 claw dollies, 7 casees beams, 8 valve bodies, 9 sealing valve port faces, 10 taper valve cores, 11 back pressure springs, 12 spool guide sleeves, 13 spool guide rods, 14 bonded washers, 15 hexagonal socket head plugs, 16O RunddichtringO
Embodiment
The principle of the little vehicle hydraulic system of bridge-type material taking machine band slope claw is described with reference to figure 1.1 is relief valve among Fig. 1.Executive component oil cylinder 5 drives claw dolly 6, makes claw dolly 6 have the work that reverses on gradient case beam 7 tracks.Keep supplying under the pressure oil condition at pressure hydraulic fluid port P, the pilot valve electromagnet YV1 of electro-hydraulic reversing valve 2 gets electric, and pressure oil is communicated with the right side control chamber of main hydraulic control valve, promotes main valve plug and moves to left, and P-B and A-T are communicated with.Oil cylinder 5 rod chamber heel pressure oil is communicated with, and rodless cavity is communicated with return line.Control oil cylinder 5 retractions this moment.When the pilot valve electromagnet YV2 of electro-hydraulic reversing valve 2 gets when electric, be to realize a kind of differentially, control oil cylinder 5 stretches out.This moment, pressure oil was communicated with the left side control chamber of main hydraulic control valve, promoted main valve plug and moved to right, and P-A and B-T are communicated with, and oil cylinder 5 rodless cavity heel pressure oil is communicated with, and promoted oil cylinder and stretched out.A branch road is dead by 3 sections on one-way valve in the rod chamber oil return circuit, can only get back to pressuring oil pipe road P through one-way valve 4.The rodless cavity oil return also will have certain pressure like this, under the situation of the linear loss of not considering pipeline and valve port pressure reduction, and the rod chamber of oil cylinder 5 and rodless cavity pressure equal and opposite in direction.Because the lifting surface area of rodless cavity is bigger; The area of cylinder rod chamber of selecting for use usually and rodless cavity work is than being the relation of 1:2; Such oil cylinder is differential to be stretched out equally with the load capacity of retraction, is the same with the motion speed of same fuel delivery, just can realize that oil cylinder 5 stretches out control at this moment.
Bridge-type scraper reclaimer case beam 7 gradients are that 2.5～3.5 degree, claw dolly 6 weight are 15～20 tons.Claw dolly 6 is through oil cylinder 5 work that on case beam 7 tracks, reverses.Drive the oil cylinder 5 of claw dolly 6, the internal diameter of cylinder barrel is Φ 160mm, and the cylinder shank diameter is Φ 110mm.Working method be oil cylinder 5 to stretch out direction be along the action of the direction of fall of case beam 7, oil cylinder 5 withdrawals are the upward slope direction actions along case beam 7.Need the bar cavity pressure like this and come the balancing gravity load, the component that just under action of gravity, produces along case beam 7 tracks.We increase one-way valve 4 cracking pressures through changing the Returnning spring specification of one-way valve 4, and the mode that makes one-way valve 4 produce big back pressure balances this load force, and the latus rectum of one-way valve 4 is DN20 here.
The specification limit of one-way valve 4 transposing Returnning springs is described with reference to figure 2.The one-way valve main member has valve body 8, poppet valve core 10, Returnning spring 11, hexagonal socket head plug 15, and spool guide sleeve 12 is fixed on the poppet valve core 10, with poppet valve core 10 are one, spool guide rod 13 also is connected as a single entity with hexagonal socket head plug 15.Bonded washer 14, O RunddichtringO 16 are arranged in addition.Change the Returnning spring 11 of one-way valve 4, will pull down the hexagonal socket head plug 15 of one-way valve 4 sides exactly earlier, match suitable spring, former spring is changed, again hexagonal socket head plug 15 is installed.Choosing of Returnning spring 11 specifications, the external diameter of the spool guide sleeve 12 of the one-way valve 4 of latus rectum DN20 is 13mm, selects for use Returnning spring 11 specifications to do; Steel wire d=2.5mm～3.5mm; Mean diameter of coil D=16.5～17.5mm, free length L0=33.5mm, number of active coils n=6～8; Require the minimum spring force under the Returnning spring 11 pre compressed magnitude s=5mm states to be about 400kN, maximum spring force is about 600kN.Best value is about 500kN under Returnning spring 11 pre compressed magnitude s=5mm states.The one-way valve of reinstalling 4 will be tested the cracking pressure and the sealing pressurize effect of this valve again, and reaching requirement can come into operation.
This hydraulic system is used the adjustment of the Returnning spring of one-way valve 4, successfully simplified the complicated hydraulic control system of traditional approach, and the system that can guarantee works stably reliably.Use occasion to the hydraulic driving control of bridge-type scraper reclaimer claw dolly 6 on the band slope is highly beneficial.Use this one-way valve 4, stretch out and put in place when needing switching-over when oil cylinder is differential, a release of pressure is gradually arranged, the process that one-way valve 4 valve ports are closed gradually makes oil cylinder 5 stretch out to stop more steady.Overcome the inertia load of claw dolly 6 more to a certain extent, alleviated reversing impact.Simultaneously, slowly closing of one-way valve 4 valve ports reduces the impact damage to sealing valve port face 9 and Returnning spring 11, greatly prolonged the working life of transformation of the way one-way valve 4.
In sum; Because what this hydraulic system adopted is a kind of Differential Control principle, realizes differential work through electro-hydraulic reversing valve and two one-way valves, like this as long as an one-way valve therein passes through to change the Returnning spring specification; Increase the one-way valve cracking pressure; Balance the claw dolly and produce the load force that glides along crossbeam in action of gravity and can realize, handle simply, reliable, practical like this, and cost is very low.Through this replacing Returnning spring specification, increase the processing of one-way valve cracking pressure, the mode that makes one-way valve produce big back pressure balances this load force, and it also is very necessary handling similar problem.
Claims (3)
1. one-way valve that is used for the little vehicle hydraulic system of bridge-type material taking machine band slope claw; Be included in the taper valve core (10) that has axle sleeve (12) in the valve body (8); The spool guide rod (13) that is connected as a single entity with hexagonal socket head plug (15); And seal arrangement (14) and (16), it is characterized in that: the specification that is enclosed within the Returnning spring (11) between taper valve core (10) and the spool guide rod (13) is according to system's needs setting range.
2. the one-way valve that is used for the little vehicle hydraulic system of bridge-type material taking machine band slope claw according to claim 1; It is characterized in that: the specification limit of described Returnning spring (11) is: steel wire d=2.5mm～3.5mm; Mean diameter of coil D=16.5～17.5mm; Free length L0=33.5mm, number of active coils n=6～8.
3. the one-way valve that is used for the little vehicle hydraulic system of bridge-type material taking machine band slope claw according to claim 2; It is characterized in that: the specification of described Returnning spring (11) is preferably: steel wire d=3mm; Mean diameter of coil D=17mm, free length L0=33.5mm, number of active coils n=7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203643423U CN202251189U (en) | 2011-09-26 | 2011-09-26 | Non-return valve having slope claw trolley hydraulic system for bridge type reclaimer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203643423U CN202251189U (en) | 2011-09-26 | 2011-09-26 | Non-return valve having slope claw trolley hydraulic system for bridge type reclaimer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251189U true CN202251189U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203643423U Expired - Fee Related CN202251189U (en) | 2011-09-26 | 2011-09-26 | Non-return valve having slope claw trolley hydraulic system for bridge type reclaimer |
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| Country | Link |
|---|---|
| CN (1) | CN202251189U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883836A (en) * | 2014-03-13 | 2014-06-25 | 常熟市辛庄镇杨园宏盛塑料五金大棚配件厂 | Tension spring with rolling ball |
| CN106089604A (en) * | 2016-08-10 | 2016-11-09 | 大连东鼎工业设备有限公司 | A kind of lubricating system solving blower fan limit power |
| CN106545675A (en) * | 2015-09-17 | 2017-03-29 | 上海世德子汽车零部件有限公司 | A kind of overflow valve system |
-
2011
- 2011-09-26 CN CN2011203643423U patent/CN202251189U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883836A (en) * | 2014-03-13 | 2014-06-25 | 常熟市辛庄镇杨园宏盛塑料五金大棚配件厂 | Tension spring with rolling ball |
| CN106545675A (en) * | 2015-09-17 | 2017-03-29 | 上海世德子汽车零部件有限公司 | A kind of overflow valve system |
| CN106089604A (en) * | 2016-08-10 | 2016-11-09 | 大连东鼎工业设备有限公司 | A kind of lubricating system solving blower fan limit power |
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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: DALIAN LIKE TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: DALIAN LIKE TECHNOLOGY ENGINEERING CO., LTD. Effective date: 20141223 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141223 Address after: 116044, No. 1, Jian Cun village, Dragon King Tong Street, Lushunkou District, Liaoning, Dalian Patentee after: Dalian force Technology Co., Ltd. Address before: 116044, 1, Shen Tong Road, Dragon King Tong Street, hi tech park, Liaoning, Dalian Patentee before: Dalian Like Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20171228 Address after: No. 13, No. 11, No. 13, A District, Xinghai Square, Shahekou District, Dalian, Liaoning Patentee after: Dalian Bai Yuan Technology Co., Ltd. Address before: 116044, No. 1, Jian Cun village, Dragon King Tong Street, Lushunkou District, Liaoning, Dalian Patentee before: Dalian force Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20190926 |
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| CF01 | Termination of patent right due to non-payment of annual fee |