CN102838056B - The hydraulic pressure lowering means of electri forklift - Google Patents
The hydraulic pressure lowering means of electri forklift Download PDFInfo
- Publication number
- CN102838056B CN102838056B CN201210332122.1A CN201210332122A CN102838056B CN 102838056 B CN102838056 B CN 102838056B CN 201210332122 A CN201210332122 A CN 201210332122A CN 102838056 B CN102838056 B CN 102838056B
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- gear
- servomotor
- silk braid
- hydraulic pressure
- guiding valve
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Abstract
The invention discloses a kind of hydraulic pressure lowering means of electri forklift, comprise the guiding valve (1) be communicated with oil cylinder, it also comprises servomotor (2), and described guiding valve (1) is connected by the output shaft of transmission device with servomotor (2).Described transmission device comprises the first gear (3), the second gear (4), rotates silk braid (5), sliding screw (6) and case (7), described case (7) is fixed with servomotor (2), described first gear (3) is connected with the output shaft of servomotor (2), described second gear (4) is connected with the one end of rotating silk braid (5), the other end of described rotation silk braid (5) and one end of sliding screw (6) screw, and the other end of described sliding screw (6) is connected with the spool of guiding valve (1).Energy normal speed governing when the hydraulic pressure lowering means of this electri forklift makes pallet fork decline, the article avoided on damage pallet fork.
Description
Technical field
The present invention relates to a kind of electri forklift, is specifically a kind of hydraulic pressure lowering means of electri forklift.
Background technology
The pallet fork of electri forklift needs to be controlled by hydraulic pressure lowering means when declining, and the hydraulic pressure lowering means of the electri forklift of prior art comprises the guiding valve and electromagnetic proportional valve that are communicated with oil cylinder, and the spool of electromagnetic proportional valve spool control valve slides.There is following shortcoming in the hydraulic pressure lowering means of the electri forklift of this structure above: pallet fork is when returning quickly; the coil of electromagnetic proportional valve is protected by magnetic; can only after electric current discharges completely; just can make the normal return of the spool of electromagnetic proportional valve; this just causes pallet fork can only to hurtle down return; when maximum speed falls, again normally cannot select to slow down, there is certain potential safety hazard like this.And when hurtling down, easily cause the article on pallet fork to damage.
Summary of the invention
The technical problem to be solved in the present invention is, provide a kind of when pallet fork is declined can normal speed governing, avoid the hydraulic pressure lowering means of the electri forklift of the article damaged on pallet fork.
Technical scheme of the present invention is, provide a kind of hydraulic pressure lowering means with the electri forklift of following structure, comprise the guiding valve be communicated with oil cylinder, it also comprises servomotor, and described guiding valve is connected with the output shaft of servomotor by transmission device.
Described transmission device comprises the first gear, the second gear, rotates silk braid, sliding screw and case, described first gear and the second gears meshing, described case and servomotor are fixed, described first gear is connected with the output shaft of servomotor, described second gear is connected with the one end of rotating silk braid, the described other end of rotation silk braid and one end of sliding screw screw, and the other end of described sliding screw is connected with the spool of guiding valve.
Described rotation silk braid axial limiting and being rotatably connected in case.
After adopting above structure, the present invention compared with prior art, have the following advantages: because servomotor is by the work of transmission mechanism control guiding valve, can ensure that guiding valve can normally work like this, servomotor, by the switch control rule of pallet fork, can reach the rotating speed of needs, and moment of torsion can be become pulling force or thrust by transmission device, thus the spool of spool control valve slides, ensure that pallet fork normally slows down or accelerates, avoid damaging the article on pallet fork.
As improvement, described transmission device comprises the first gear, the second gear, rotates silk braid, sliding screw and case, described case and servomotor are fixed, described first gear is connected with the output shaft of servomotor, described second gear is connected with the one end of rotating silk braid, the described other end of rotation silk braid and one end of sliding screw screw, the other end of described sliding screw is connected with the spool of guiding valve, the transmission of torque of motor can be straight pull and thrust by this cover mechanism, transmission accuracy is good, and construction is simple.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the hydraulic pressure lowering means of electri forklift of the present invention.
Accompanying drawing 2 is the generalized section of the hydraulic pressure lowering means of electri forklift of the present invention.
As shown in the figure: 1, guiding valve, 2, servomotor, the 3, first gear, the 4, second gear, 5, rotate silk braid, 6, sliding screw, 7, case.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1 and Figure 2, the hydraulic pressure lowering means of electri forklift of the present invention, comprise the guiding valve 1 be communicated with oil cylinder, it also comprises servomotor 2, and described guiding valve 1 is connected by the output shaft of transmission device with servomotor 2.
Described transmission device comprises the first gear 3, second gear 4, rotates silk braid 5, sliding screw 6 and case 7, described first gear 3 engages with the second gear 4, described case 7 is fixed with servomotor 2, described first gear 3 is connected with the output shaft of servomotor 2, described second gear 4 is connected with the one end of rotating silk braid 5, the other end of described rotation silk braid 5 and one end of sliding screw 6 screw, and the other end of described sliding screw 6 is connected with the spool of guiding valve 1.Described case 7 is fixed with guiding valve 1, and one end of described rotation silk braid 5 is rotating shaft, and the other end is silk braid, and one end of described sliding screw 6 is screw mandrel, and the other end is provided with the blind hole of accommodating valve core of the spool valve, and the end axial limiting of valve core of the spool valve is also embedded in blind hole.
Described rotation silk braid 5 axial limiting and be rotatably connected in case 7, the two ends of rotating silk braid 5 are established and be equipped with bearing between the inwalls of case.
During work, servomotor 2 rotates by switch control rule, drives the first gear 3 and the second gear 4, rotates silk braid 5 and rotates by the second gear 4 and rotate, the rotation of rotating silk braid 5 drives sliding screw 6 tandem to stretch, the spool work of sliding screw 6 resulting belt movable pulley 1.
Claims (1)
1. the hydraulic pressure lowering means of an electri forklift, comprise the guiding valve (1) be communicated with oil cylinder, it is characterized in that: it also comprises servomotor (2), described guiding valve (1) is connected by the output shaft of transmission device with servomotor (2), described transmission device comprises the first gear (3), second gear (4), rotate silk braid (5), sliding screw (6) and case (7), described first gear (3) is engaged with the second gear (4), described case (7) is fixed with servomotor (2), described first gear (3) is connected with the output shaft of servomotor (2), described second gear (4) is connected with the one end of rotating silk braid (5), the other end of described rotation silk braid (5) and one end of sliding screw (6) screw, the other end of described sliding screw (6) is connected with the spool of guiding valve (1), described rotation silk braid (5) axial limiting and being rotatably connected in case (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210332122.1A CN102838056B (en) | 2012-09-10 | 2012-09-10 | The hydraulic pressure lowering means of electri forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210332122.1A CN102838056B (en) | 2012-09-10 | 2012-09-10 | The hydraulic pressure lowering means of electri forklift |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102838056A CN102838056A (en) | 2012-12-26 |
| CN102838056B true CN102838056B (en) | 2016-02-10 |
Family
ID=47365826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210332122.1A Active CN102838056B (en) | 2012-09-10 | 2012-09-10 | The hydraulic pressure lowering means of electri forklift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102838056B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106564367B (en) * | 2016-10-20 | 2020-07-07 | 国网山东省电力公司菏泽供电公司 | Storage operation vehicle loading and unloading system and storage operation vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2281422Y (en) * | 1997-04-15 | 1998-05-13 | 昆明理工大学 | Linear fluid motor |
| CN2521198Y (en) * | 2002-01-16 | 2002-11-20 | 陕西燎原航空机械制造公司 | Plunger damping hydraulic oil cylinder |
| CN102588369A (en) * | 2012-02-23 | 2012-07-18 | 江正庆 | Numerical control hydraulic control unit |
| CN102616703A (en) * | 2012-04-16 | 2012-08-01 | 缪慰时 | Track-free intelligent moving device of goods shelf warehouse |
| CN202785539U (en) * | 2012-09-10 | 2013-03-13 | 宁波力达物流设备有限公司 | Hydraulic dropping device of electric fork truck |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201786796U (en) * | 2010-09-25 | 2011-04-06 | 许新跃 | Numerical control proportion directional valve |
-
2012
- 2012-09-10 CN CN201210332122.1A patent/CN102838056B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2281422Y (en) * | 1997-04-15 | 1998-05-13 | 昆明理工大学 | Linear fluid motor |
| CN2521198Y (en) * | 2002-01-16 | 2002-11-20 | 陕西燎原航空机械制造公司 | Plunger damping hydraulic oil cylinder |
| CN102588369A (en) * | 2012-02-23 | 2012-07-18 | 江正庆 | Numerical control hydraulic control unit |
| CN102616703A (en) * | 2012-04-16 | 2012-08-01 | 缪慰时 | Track-free intelligent moving device of goods shelf warehouse |
| CN202785539U (en) * | 2012-09-10 | 2013-03-13 | 宁波力达物流设备有限公司 | Hydraulic dropping device of electric fork truck |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102838056A (en) | 2012-12-26 |
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