CN201677920U - Combined large-displacement full hydraulic steering gear - Google Patents

Combined large-displacement full hydraulic steering gear Download PDF

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Publication number
CN201677920U
CN201677920U CN2010201560169U CN201020156016U CN201677920U CN 201677920 U CN201677920 U CN 201677920U CN 2010201560169 U CN2010201560169 U CN 2010201560169U CN 201020156016 U CN201020156016 U CN 201020156016U CN 201677920 U CN201677920 U CN 201677920U
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CN
China
Prior art keywords
rotor
stator
steering gear
discharge capacity
hydraulic steering
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 - Lifetime
Application number
CN2010201560169U
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Chinese (zh)
Inventor
李富刚
郭鑫
叶忠明
叶显芝
何平
张凯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Danfoss Power Solutions Jiangsu Co Ltd
Original Assignee
WHITE (CHINA) DRIVE PRODUCTS CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WHITE (CHINA) DRIVE PRODUCTS CO Ltd filed Critical WHITE (CHINA) DRIVE PRODUCTS CO Ltd
Priority to CN2010201560169U priority Critical patent/CN201677920U/en
Application granted granted Critical
Publication of CN201677920U publication Critical patent/CN201677920U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a combined large- displacement full hydraulic steering gear, mainly comprising a valve body (1), wherein a valve core and valve sleeve pair and a rotor and stator pair are arranged in the valve body (1); the rotor and stator pair is connected with the valve core and valve sleeve pair through an universal driving shaft (4), and comprises one or a plurality of stators and a plurality of rotors; the stators are arranged corresponding to the rotors; and the stators and the rotors are connected through connecting pieces. Under the condition of satisfying large emission, the utility model reduces the investment of large processing equipment, and enhances the product precision; the utility model has the advantages of simple structure, reliable work, simple and reliable processing and assembling process and wide use range, can greatly reduce the processing cost, and enhance the product property.

Description

The big discharge capacity all-hydraulic steering gear of compound type
Technical field
The utility model relates to a kind of all-hydraulic steering gear, the big discharge capacity all-hydraulic steering gear of especially a kind of compound type, and this deflector is applicable to the engineering truck that needs the above all-hydraulic steering gear of 500mL/r discharge capacity, belongs to Design of Mechanical Product and manufacturing technology field.
Background technology
The present big discharge capacity all-hydraulic steering gear that uses, it changes stator pair and mainly contains two kinds of set-up modes: a kind of is that a long stator and a long rotor form commentaries on classics stator pair; Another kind is two isometric short stator pairs of changeing, and connects by the splined axle.Interfere two to change between the stator pair in order to prevent by separating every dish and seal ring.The stator of first kind of set-up mode, its procedure of processing is: broach earlier and afterwards quench, be used with long rotor after the grinding.The drawback of this setup is that rotor is oversize, and the processing stroke that carries out the power grinding profile is too big.Need large-sized processing equipment, equipment investment is excessive, has increased tooling cost relatively.And the drawback of second kind of set-up mode is, has increased every dish and seal ring, and the complete machine length overall is longer, and fitting process is complicated.Simultaneously since the setting of seal ring also cause increased the outer seepage chance of fluid, increased productive costs equally relatively.
The utility model content
Technical problem to be solved in the utility model is, provide a kind of compound type big discharge capacity all-hydraulic steering gear at the deficiencies in the prior art, redesigned the bore of stator size, determined the diameter clearance of different rotor and stator, redesigned the coupling spindle between two rotors, made assembly technology more simple; Improved product efficient, cost-cutting has also improved the sealing property of deflector simultaneously, reduces internal leakage, improves deflector terminal point performance.
Technical problem to be solved in the utility model is achieved by the following technical solution:
The big discharge capacity all-hydraulic steering gear of a kind of compound type, mainly comprise valve body, the commentaries on classics stator pair that is provided with spool valve pocket pair in the valve body and connects by universal driving shaft and spool valve pocket parafacies, described commentaries on classics stator pair comprises one or more stators with a plurality of rotors, a plurality of stator and rotor is corresponding that formation is set, and links to each other by connector between rotor and the stator.
Because the restriction of working accuracy is provided with diameter clearance between described rotor and the stator, the magnitude range of this diameter clearance is between 0.005-0.04mm.
According to different discharge capacity requirements, described commentaries on classics stator pair can be formed with corresponding setting of a plurality of rotors by a stator, and a plurality of rotor comprises long rotor and short rotor; Described connector is a coupling spindle, and described long rotor links to each other by coupling spindle with short rotor.
Diameter clearance between described short rotor and the stator is greater than the diameter clearance between described long rotor and the stator.Both differences are between 0.02-0.05mm.
According to different discharge capacity requirements, described commentaries on classics stator pair can also be formed with corresponding setting of a plurality of rotors by a plurality of stators, and a plurality of rotor comprises long rotor and short rotor; Described connector is a coupling spindle, and described long rotor links to each other by coupling spindle with short rotor; Be provided with locating dowel pin between described a plurality of stator.
Diameter clearance between described short rotor and the stator is greater than the diameter clearance between described long rotor and the stator.Both differences are between 0.02-0.05mm.
According to different discharge capacity requirements, described commentaries on classics stator pair also can be formed with corresponding a setting of rotor by a plurality of stators, and described connector is a pillar stiffener, is provided with locating dowel pin between described a plurality of stators.
In sum, the beneficial effects of the utility model are: more simple assembly technology is provided, has improved the production efficiency of deflector, reduced the volume and weight of deflector, also improved the sealing property and the terminal point performance of deflector simultaneously.
Below in conjunction with the drawings and specific embodiments the technical solution of the utility model is described in detail.
Description of drawings
Fig. 1 is the integral structure scheme drawing of the utility model embodiment one;
Fig. 2 is the valve body outside drawing of the utility model embodiment one;
Fig. 3 is the valve pocket outside drawing of the utility model embodiment one;
Fig. 4 is the spool outside drawing of the utility model embodiment one;
Fig. 5 A and Fig. 5 B are respectively the B-B of Fig. 1, C-C cutaway view;
Fig. 6 A-Fig. 6 C is the commentaries on classics stator auxiliary structure scheme drawing of the utility model embodiment two;
Fig. 7 A and Fig. 7 B are the commentaries on classics stator auxiliary structure scheme drawing of the utility model embodiment three.
The specific embodiment
The invention provides the big discharge capacity all-hydraulic steering gear of a kind of compound type, mainly comprise valve body, the commentaries on classics stator pair that is provided with spool valve pocket pair in the valve body and connects by universal driving shaft and spool valve pocket parafacies.According to different discharge capacity requirements, described commentaries on classics stator pair can adopt multiple frame mode, changes the stator pair and can comprise one or more stators with a plurality of rotors, a plurality of stator and rotor is corresponding that formation is set, and link to each other by connector between rotor and the stator.For different commentaries on classics stator pairs, the structure of connector is also different.Below by different embodiment the technical solution of the utility model is elaborated.
Embodiment one
Fig. 1 is the integral structure scheme drawing of the utility model embodiment one.As shown in Figure 1, present embodiment provides a kind of compound type big discharge capacity all-hydraulic steering gear, mainly comprise valve body 1, valve pocket 2, spool 3, universal driving shaft 4, every dish 5, coupling spindle 6, stator 7, long rotor 8, lack rotor 9, bonnet 10, seal ring 11 and screw 12.As shown in Figure 1, in present embodiment one, 7, one long rotors 8 of a long stator and a short rotor 9 that connects by coupling spindle 6 have been formed a big discharge capacity is changeed the stator pair.It is secondary supporting by valve body 1, valve pocket 2, spool 3 and universal driving shaft 4, become big discharge capacity all-hydraulic steering gear every dish 5, bonnet 10 and other enclosure group that the big discharge capacity of this compound type is changeed stator.
Fig. 2-Fig. 4 is respectively the outside drawing of valve body, valve pocket and the spool of embodiment one, in conjunction with the principle of work of Fig. 2-Fig. 4 to deflector, carries out following explanation:
The principle of work of all-hydraulic steering gear is: when (turning to) do not worked in deflector, the high-pressure and hydraulic oil that oil pump is supplied with enters from deflector oil inlet 33, in valve body oil-feed inner groove 28, enter valve core housing inside through valve pocket afterbody aperture 37, spool afterbody grooving 43, fuel return hole 42 and valve body back leakage groove 32, return opening 34 through the valve core housing other end are got back to fuel tank, and steering swivel system is not worked.
When turning to, the deflector spool is subjected to steering direction dish effect (or right) rotation left, valve pocket afterbody aperture and spool afterbody grooving are closed because of spool and valve pocket have produced an angle, fluid enters spool oil feed groove 44 through valve pocket fuel feed hole 38, spool oil feed groove and valve pocket radially 6 holes in 12 holes 39 are logical, fluid enters a side 47 of changeing the secondary rotor of stator through 7 radial holes 29 of this 6 hole and valve body, promote rotor rotation, 6 holes of the fluid of rotor opposite side 48 in valve body radial hole and valve pocket 12 holes enter spool direction groove 45, enter through valve pocket L mouth 41 (or R mouth 40) hole and to turn to oil cylinder, promote vehicle (or right) directional steering left.Turn to the oil return of oil cylinder to get back to the back leakage groove 46 of spool through deflector R mouth 36 (or L mouth 35), valve body R inner groove 30 (or L inner groove 31), valve pocket R hole 40 (or L hole 41), get back to fuel tank, finish the work that turns to through fuel return hole 42.
In steering procedure, valve body 1, spool 3 play the direction valve effect with valve pocket 2, and radical function is to make between spool 3 valve pockets 2 to produce angle when spool 3 rotates, and turns to hole slot to be communicated with, and fluid rotates to produce by the pushing direction wheel and turns to.And all fluid by spool 3 valve pockets 2 all need just can enter and turn to oil cylinder by changeing stator, and change stator is the cycloid pin gear, the rotor of regular length rotates a circle fluid of being discharged and fixes in stator, so, in deflector, it is gauging device that cycloid changes the stator pair, can calculate bearing circle and rotate the fluid volume that a circle deflector is discharged, and its unit is mL/r (a milliliter revolution).The difference of changeing the secondary length of stator has determined different discharge capacities.Deflector now has 50,80,100,125,160,200,250,315,400,500,630,800, several discharge capacities such as 1000mL/r, and wherein, 50,80,100 is little discharge capacity, and 125,160,200,250,315,400,500 is middle discharge capacity, and 630,800,1000 is big discharge capacity.
Fig. 5 A and Fig. 5 B are respectively the B-B into Fig. 1, C-C cutaway view.Big discharge capacity in the present embodiment is changeed the secondary composition mode of stator, a long stator 7 and a long rotor 8 that is linked up by coupling spindle 6, lacks rotor 9 and forms.Because it is a pair of internal gear pair that cycloid changes the stator pair, the rotor outline was made relative PURE ROLLING with stator pin tooth when rotor rotated in stator.So in theory, the diameter clearance between rotor and the stator should be 0.But because machine finish can not reach the absolute value of theoretical size, between rotor and the stator certain clearance H must be arranged, this gap H value generally is controlled between 0.005~0.04mm, does not produce excessive frictional resistance to guarantee rotor can freely rotate in stator.If but this gap too greatly then can produce internal leakage and make the complete machine flow change rate become big, in order to guarantee short rotor 9 moving commentaries on classics flexibly in long stator 7, under the situation that does not influence flow change rate, the diameter clearance of setting short rotor 9 and long stator 7 is H2, long rotor 8 is H1 with the diameter clearance of long stator 7, and H 2>H 1, both differences generally are controlled between 0.02~0.05mm.
Embodiment two
Fig. 6 A-Fig. 6 C is the commentaries on classics stator auxiliary structure scheme drawing of the utility model embodiment two, shown in Fig. 6 A-Fig. 6 C, big discharge capacity in the present embodiment is changeed the secondary composition mode of stator, short stator 17, short stator 21 and the long rotor 18 that is linked up by coupling spindle 19, short rotor 22 are formed, and wherein two short stators 17,18 are by the accuracy of two locating dowel pins, 20 location with assurance relative position degree.The diameter clearance of short rotor 22 and short stator 21 is H 4, the diameter clearance of long rotor 18 and short stator 17 is H 3, and H 4>H 3, both differences generally are controlled between 0.02~0.05mm.
Embodiment three
Fig. 7 A, Fig. 7 B are the commentaries on classics stator auxiliary structure scheme drawing of the utility model embodiment three, shown in Fig. 7 A and Fig. 7 B, big discharge capacity in the present embodiment is changeed the secondary composition mode of stator, stator 23, a stator 27 and a long rotor 24 are formed, wherein two stators 23,27 by two locating dowel pins, 25 location to guarantee the accuracy of relative position degree.In rotor 24 inside a pillar stiffener 26 is arranged.The diameter clearance of wherein long rotor 24 and two stators 23,27 is H 5
Comprehensive above-mentioned three embodiment, compared with prior art, concerning embodiment one, rotor does not need grinding to go out the length that a grade is longer than long stator, has saved the input of large equipment, has reduced productive costs.Embodiment two and embodiment three do not need one of additive incrementation every dish and seal ring, saved cost, have reduced the risk of outer seepage, have reduced exchange length.The various technical schemes that provided in the foregoing description, the quantity of a plurality of stators or a plurality of rotors are two.But in actual applications, change secondary one-to-many, multi-to-multi or the many-to-one array mode of adopting of stator, its quantity can be selected according to the requirement of discharge capacity, is not limited to two.
Therefore, the utility model provides a kind of compound type big discharge capacity all-hydraulic steering gear, has redesigned the bore of stator size, has determined the diameter clearance of different rotor and stator, has redesigned the coupling spindle between two rotors, makes assembly technology more simple; Improved product efficient, cost-cutting has also improved the sealing property of deflector simultaneously, reduces internal leakage, improves deflector terminal point performance.
It should be noted that at last: above example is only in order to the explanation the technical solution of the utility model, but also not restriction fully.Although the utility model is had been described in detail with reference to above-mentioned example, those of ordinary skill in the art is to be understood that, still can make amendment and be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of the technical program, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims (10)

1. big discharge capacity all-hydraulic steering gear of compound type, mainly comprise valve body (1), be provided with the commentaries on classics stator pair that the spool valve pocket is secondary and pass through universal driving shaft (4) and the connection of spool valve pocket parafacies in the valve body (1), it is characterized in that, described commentaries on classics stator pair comprises one or more stators with a plurality of rotors, a plurality of stator and rotor is corresponding that formation is set, and links to each other by connector between rotor and the stator.
2. the big discharge capacity all-hydraulic steering gear of compound type as claimed in claim 1 is characterized in that be provided with diameter clearance between described rotor and the stator, the magnitude range of this diameter clearance is between 0.005-0.04mm.
3. the big discharge capacity all-hydraulic steering gear of compound type as claimed in claim 1 is characterized in that, described commentaries on classics stator pair is formed with corresponding setting of a plurality of rotors by a stator (7), and a plurality of rotor comprises long rotor (8) and short rotor (9); Described connector is coupling spindle (6), and described long rotor (8) links to each other by coupling spindle (6) with short rotor (9).
4. the big discharge capacity all-hydraulic steering gear of compound type as claimed in claim 3 is characterized in that, the diameter clearance (H2) between described short rotor (9) and the stator (7) is greater than the diameter clearance (H1) between described long rotor (8) and the stator (7).
5. the big discharge capacity all-hydraulic steering gear of compound type as claimed in claim 4, it is characterized in that the difference of the diameter clearance (H1) between diameter clearance (H2) between described short rotor (9) and the stator (7) and described long rotor (8) and the stator (7) is between 0.02-0.05mm.
6. the big discharge capacity all-hydraulic steering gear of compound type as claimed in claim 1 is characterized in that, described commentaries on classics stator pair is formed with corresponding setting of a plurality of rotors by a plurality of stators (17,21), and a plurality of rotor comprises long rotor (18) and short rotor (22); Described connector is coupling spindle (19), and described long rotor (18) links to each other by coupling spindle (19) with short rotor (22); Be provided with locating dowel pin (20) between described a plurality of stator.
7. the big discharge capacity all-hydraulic steering gear of compound type as claimed in claim 6 is characterized in that, the diameter clearance (H4) between described short rotor (22) and the stator (21) is greater than the diameter clearance (H3) between described long rotor (18) and the stator (17).
8. the big discharge capacity all-hydraulic steering gear of compound type as claimed in claim 7, it is characterized in that the difference of the diameter clearance (H3) between diameter clearance (H4) between described short rotor (22) and the stator (21) and described long rotor (18) and the stator (17) is between 0.02-0.05mm.
9. the big discharge capacity all-hydraulic steering gear of compound type as claimed in claim 1, it is characterized in that, described commentaries on classics stator pair is formed with corresponding setting of a rotor (24) by a plurality of stators (23,27), described connector is pillar stiffener (26), and described a plurality of stators are provided with locating dowel pin (25) between (23,27).
10. the big discharge capacity all-hydraulic steering gear of compound type as claimed in claim 1 is characterized in that described a plurality of stators are 2; Described a plurality of rotor is 2.
CN2010201560169U 2010-04-08 2010-04-08 Combined large-displacement full hydraulic steering gear Expired - Lifetime CN201677920U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201560169U CN201677920U (en) 2010-04-08 2010-04-08 Combined large-displacement full hydraulic steering gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201560169U CN201677920U (en) 2010-04-08 2010-04-08 Combined large-displacement full hydraulic steering gear

Publications (1)

Publication Number Publication Date
CN201677920U true CN201677920U (en) 2010-12-22

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Application Number Title Priority Date Filing Date
CN2010201560169U Expired - Lifetime CN201677920U (en) 2010-04-08 2010-04-08 Combined large-displacement full hydraulic steering gear

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104024088A (en) * 2011-12-27 2014-09-03 丹佛斯动力系统有限公司 Hydraulic steering device
CN106697045A (en) * 2015-11-16 2017-05-24 镇江液压股份有限公司 Multiple-damping-buffer noise-reduction type low-noise steering gear

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104024088A (en) * 2011-12-27 2014-09-03 丹佛斯动力系统有限公司 Hydraulic steering device
CN106697045A (en) * 2015-11-16 2017-05-24 镇江液压股份有限公司 Multiple-damping-buffer noise-reduction type low-noise steering gear

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Legal Events

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C14 Grant of patent or utility model
GR01 Patent grant
CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: 212021 Ningzhen Road No. 1-8, run Zhou District, Zhenjiang, Jiangsu

Patentee after: Danfoss power system (Jiangsu) Co., Ltd.

Address before: No. 1-8 Ningzhen Road, Zhenjiang, Jiangsu Province, Jiangsu

Patentee before: Huaite (China) Driving Product Co., Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20101222