CN101811653A - Rear axle following locking device of forklift truck - Google Patents
Rear axle following locking device of forklift truck Download PDFInfo
- Publication number
- CN101811653A CN101811653A CN200910303471A CN200910303471A CN101811653A CN 101811653 A CN101811653 A CN 101811653A CN 200910303471 A CN200910303471 A CN 200910303471A CN 200910303471 A CN200910303471 A CN 200910303471A CN 101811653 A CN101811653 A CN 101811653A
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- rear axle
- way valve
- hydraulic control
- oil cylinder
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Abstract
The invention discloses a rear axle following locking device of a forklift truck, comprising a rear axle, and the rear axle is articulated with a truck frame. The rear axle following locking device of the forklift truck is characterized in that an oil cylinder and a push rod of a locking oil cylinder are respectively articulated between the rear axle and the truck frame; oil lines of a rod cavity and a rodless cavity of the locking oil cylinder are connected with a control device; and the control device controls the oil cylinder and the push rod of the locking oil cylinder to oppositely freely move in the following state of the rear axle and controls the oil cylinder and the push rod of the locking oil cylinder to oppositely lock with each other in the locking state of the rear axle. The invention can enhance the stability of the side direction operation of the multifunctional telescopic-arm forklift truck and the operation property of the forklift truck; and in addition, the rear axle following locking device has simple, practical and reliable structure and can enhance the operation property and meet the requirements of a smooth driving function and a truck body levelling function of the multifunctional telescopic-arm forklift truck.
Description
Technical field
The present invention relates to the forklift truck apparatus field, especially a kind of back axle draw bail of forklift truck.
Background technology
Multi-functional telescopic arm forklift truck is a kind of multiduty novel material handling machinery, the operating feature of forklift truck requires car body and pallet fork can carry out leveling, common forward and backward bridge and vehicle frame all adopt articulated manner, propons is established leveling cyclinder, back axle is the servo-actuated state for the adaptation uneven road surface travels, the forklift truck of this structure line that topples is a triangle, forklift truck is when making progress the luffing operation, increasing along with the telescopic boom elevation angle, the lateral stability coefficient can reduce rapidly, the operational capability performance when having limited the forklift truck big-elevation.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of rear axle following locking device of forklift truck that can increase forklift truck stability is provided.
Technical scheme of the present invention is as follows:
A kind of rear axle following locking device of forklift truck, comprise back axle, back axle is hinged on the vehicle frame, it is characterized in that: the oil cylinder of locked cylinder and push rod are hinged on respectively between back axle and the vehicle frame, the rod chamber of locked cylinder and the oil circuit of rodless cavity are connected to control setup, the oil cylinder of control setup control locked cylinder and push rod can relative free motions under the rear axle following state, lock between relatively at the oil cylinder of control setup control locked cylinder under the back axle lock-out state and push rod.
Supplementary technology scheme of the present invention is as follows:
Preferably, described control setup comprises first hydraulic control one-way valve and second hydraulic control one-way valve of electromagnetic valve and solenoid control, and first hydraulic control one-way valve and second hydraulic control one-way valve are installed in respectively on the oil circuit of the rod chamber of locked cylinder and rodless cavity; Under the rear axle following state, electromagnetic valve dead electricity, first hydraulic control one-way valve and second hydraulic control one-way valve control mouthful external certain pressure, first hydraulic control one-way valve and the second fluid-control one-way opening of valves, locked cylinder rod chamber and rodless cavity all communicate with fuel tank, and oil cylinder is in quick condition, rear axle following; Under the back axle lock-out state, electromagnetic valve gets electric, and the control mouth pressure of first hydraulic control one-way valve and second hydraulic control one-way valve is zero, first hydraulic control one-way valve and the second fluid-control one-way valve blocking, and oil cylinder two cavity oil road disconnects, the back axle locking.
Preferably, the oil cylinder of locked cylinder is hinged on the vehicle frame, and push rod is hinged on the back axle.
The invention has the beneficial effects as follows: 1, can improve the side direction job stabilization of multi-functional telescopic arm forklift truck, strengthen the transaction capabilities of forklift truck; 2, this apparatus structure is simple, practical and reliable, can improve transaction capabilities, satisfies multi-functional telescopic arm forklift truck and travels smooth-going and car body levelling function needs.
Description of drawings
The present invention will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 be the specific embodiment of the invention under rear axle following and locking condition, the line scheme drawing that topples of multi-functional telescopic arm forklift truck;
Fig. 2 is a specific embodiment of the invention rear axle following locking device structural representation.
Among the figure: 1. back axle 2. hydraulic control one-way valves 3. electromagnetic valves 4. hydraulic control one-way valves 5. locked cylinders
The specific embodiment
Specific embodiments of the invention, a kind of rear axle following locking device of forklift truck, as shown in Figure 2, comprise back axle 1, back axle 1 is hinged on the vehicle frame, the oil cylinder of locked cylinder 5 is hinged on the vehicle frame, push rod is hinged on the back axle 1, the rod chamber of locked cylinder 5 and the oil circuit of rodless cavity are connected to control setup, the oil cylinder of control setup control locked cylinder and push rod can relative free motions under the rear axle following state, lock between relatively at the oil cylinder of control setup control locked cylinder under the back axle lock-out state and push rod.
A kind of optimal way of above-mentioned control setup is that control setup comprises that first hydraulic control one-way valve 2 of electromagnetic valve 3 and electromagnetic valve 3 controls and second hydraulic control one-way valve, 4, the first hydraulic control one-way valves 2 and second hydraulic control one-way valve 4 are installed in respectively on the oil circuit of the rod chamber of locked cylinder and rodless cavity; Electromagnetic valve 3 dead electricity under the rear axle following state, the external certain pressure of control mouth of first hydraulic control one-way valve 2 and second hydraulic control one-way valve 3, first hydraulic control one-way valve 2 and second hydraulic control one-way valve 4 are opened, locked cylinder rod chamber and rodless cavity all communicate with fuel tank, oil cylinder is in quick condition, rear axle following; Under the back axle lock-out state, electromagnetic valve gets electric, and the control mouth pressure of first hydraulic control one-way valve 2 and second hydraulic control one-way valve 3 is zero, first hydraulic control one-way valve 2 and 3 lockings of second hydraulic control one-way valve, and oil cylinder two cavity oil road disconnects, the back axle locking.
Present embodiment increases rear axle following locking device on the basis of the multi-functional telescopic arm forklift truck structure of tradition, by the locking back axle, improve the transaction capabilities of multi-functional telescopic arm forklift truck.During rear axle following, the line that topples of multi-functional telescopic arm forklift truck is accompanying drawing 1 intermediate cam shape ABE '; During the back axle locking, back axle and vehicle frame become rigid attachment, and the line that topples of forklift truck is quadrangle ABCD in the accompanying drawing 1.Wherein, A, B, C, D are the forklift truck center of tire contact, and E is the hinged center of forklift truck back axle and vehicle frame, the ground projection that E ' is ordered for E.The line ABE ' that topples when the timer-operated line ABCD that topples of back axle lock has comprised non-locking fully, the situation when the complete machine lateral stability is far longer than rear axle following, the transaction capabilities when the crane arm big-elevation obviously strengthens.
Disclosed all features in this specification sheets, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification sheets (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
The present invention is not limited to the aforesaid specific embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (3)
1. rear axle following locking device of forklift truck, comprise back axle, back axle is hinged on the vehicle frame, it is characterized in that: the oil cylinder of locked cylinder and push rod are hinged on respectively between back axle and the vehicle frame, the rod chamber of locked cylinder and the oil circuit of rodless cavity are connected to control setup, the oil cylinder of control setup control locked cylinder and push rod can relative free motions under the rear axle following state, lock between relatively at the oil cylinder of control setup control locked cylinder under the back axle lock-out state and push rod.
2. rear axle following locking device of forklift truck according to claim 1, it is characterized in that: described control setup comprises first hydraulic control one-way valve and second hydraulic control one-way valve of electromagnetic valve and solenoid control, and first hydraulic control one-way valve and second hydraulic control one-way valve are installed in respectively on the oil circuit of the rod chamber of locked cylinder and rodless cavity; Under the rear axle following state, electromagnetic valve dead electricity, first hydraulic control one-way valve and second hydraulic control one-way valve control mouthful external certain pressure, first hydraulic control one-way valve and the second fluid-control one-way opening of valves, locked cylinder rod chamber and rodless cavity all communicate with fuel tank, and oil cylinder is in quick condition, rear axle following; Under the back axle lock-out state, electromagnetic valve gets electric, and the control mouth pressure of first hydraulic control one-way valve and second hydraulic control one-way valve is zero, first hydraulic control one-way valve and the second fluid-control one-way valve blocking, and oil cylinder two cavity oil road disconnects, the back axle locking.
3. rear axle following locking device of forklift truck according to claim 1 is characterized in that: the oil cylinder of locked cylinder is hinged on the vehicle frame, and push rod is hinged on the back axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910303471A CN101811653A (en) | 2009-06-19 | 2009-06-19 | Rear axle following locking device of forklift truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910303471A CN101811653A (en) | 2009-06-19 | 2009-06-19 | Rear axle following locking device of forklift truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101811653A true CN101811653A (en) | 2010-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910303471A Pending CN101811653A (en) | 2009-06-19 | 2009-06-19 | Rear axle following locking device of forklift truck |
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| Country | Link |
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| CN (1) | CN101811653A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398879A (en) * | 2011-11-23 | 2012-04-04 | 芜湖瑞创叉车有限公司 | Fixing device for oil cylinder |
| CN102515063A (en) * | 2011-12-13 | 2012-06-27 | 合肥搬易通科技发展有限公司 | Forklift body locking system for standing steer type electric forward forklift |
| CN102785606A (en) * | 2012-09-03 | 2012-11-21 | 长沙凯瑞重工机械有限公司 | Chassis of feeding trolley and feeding trolley |
| CN103291217A (en) * | 2013-05-09 | 2013-09-11 | 恒天九五重工有限公司 | Fixing mechanism for riveting device for horizontal directional drilling machine |
| CN106240273A (en) * | 2016-10-09 | 2016-12-21 | 济南大学 | A kind of novel harvester chassis structure with levelling function |
| CN115123317A (en) * | 2022-07-19 | 2022-09-30 | 中车南京浦镇车辆有限公司 | Take solenoid valve mechanical interlocking structure's controller control circuit |
-
2009
- 2009-06-19 CN CN200910303471A patent/CN101811653A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398879A (en) * | 2011-11-23 | 2012-04-04 | 芜湖瑞创叉车有限公司 | Fixing device for oil cylinder |
| CN102515063A (en) * | 2011-12-13 | 2012-06-27 | 合肥搬易通科技发展有限公司 | Forklift body locking system for standing steer type electric forward forklift |
| CN102785606A (en) * | 2012-09-03 | 2012-11-21 | 长沙凯瑞重工机械有限公司 | Chassis of feeding trolley and feeding trolley |
| CN103291217A (en) * | 2013-05-09 | 2013-09-11 | 恒天九五重工有限公司 | Fixing mechanism for riveting device for horizontal directional drilling machine |
| CN103291217B (en) * | 2013-05-09 | 2015-11-04 | 恒天九五重工有限公司 | The fixed mechanism of horizontal directional drilling machine rivetting device |
| CN106240273A (en) * | 2016-10-09 | 2016-12-21 | 济南大学 | A kind of novel harvester chassis structure with levelling function |
| CN115123317A (en) * | 2022-07-19 | 2022-09-30 | 中车南京浦镇车辆有限公司 | Take solenoid valve mechanical interlocking structure's controller control circuit |
| CN115123317B (en) * | 2022-07-19 | 2024-03-08 | 南京轨道交通产业发展有限公司 | Control circuit of driver with electromagnetic valve mechanical interlocking structure |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100825 |