CN203639018U - Gear rack type supporting leg retracting device - Google Patents
Gear rack type supporting leg retracting device Download PDFInfo
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- CN203639018U CN203639018U CN201320733673.9U CN201320733673U CN203639018U CN 203639018 U CN203639018 U CN 203639018U CN 201320733673 U CN201320733673 U CN 201320733673U CN 203639018 U CN203639018 U CN 203639018U
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Abstract
The utility model relates to a gear rack type supporting leg retracting device. The gear rack type supporting leg retracting device comprises n gears, n racks, n supporting legs and a bottom frame, wherein the first rack is fixedly mounted on the first-grade supporting leg; the first gear is mounted on the outer side of the first-grade supporting leg; the gear mounted on the outer side of the first-grade supporting leg is mutually engaged with the rack mounted on the first-grade supporting leg; successively, the final rack is fixedly mounted on the nth supporting leg and the final gear is mounted on the outer side of the nth supporting leg; the gear mounted on the outer side of the nth supporting leg is mutually engaged with the gear mounted on the nth supporting leg; the gears are driven by an external motor; the gears are rotated to drive the corresponding supporting legs to stretch or retract; the (n-1)th-grade supporting leg is limited by the nth supporting leg; the nth supporting leg is limited by the bottom frame. According to the gear rack type supporting leg retracting device, the gears and the racks are engaged to drive the supporting legs to retract, so that a plurality of grades of supporting legs are simultaneously or successively retracted to realize the effects of reducing the manufacturing cost, simplifying the structure, decreasing the failure rate, improving the system stability and being convenient to install and maintain.
Description
Technical field
The utility model relates to concrete pump vehicle supporting leg, is specifically related to rack-and-gear support leg retractor device, is mainly used in concrete arm pump truck, hoisting crane etc.
Background technology
In recent years, concrete arm pump truck had obtained swift and violent development in China.Concrete pump truck integrates concrete conveyance and pouring operation, can solve concrete horizontal and vertical simultaneously and carry, and work efficiency is high, and human cost is low.Concrete pump vehicle supporting leg is supporting concrete pump truck, is the core component of concrete pump truck.The strong point of supporting leg forms bearing surface, only has in the time that the center of gravity of car load is fallen in bearing surface, and pump truck just can not be tumbled.But in actual work, the length of jib, speed of revolutions usually make center of gravity that very large skew occurs.This just requires supporting leg to have enough length that the center of gravity of skew is dropped in bearing surface.But long supporting leg does not meet the professional standard of pump truck, and make the pump truck inconvenience of travelling.So multistage landing leg stretching structure of the many employings of concrete pump vehicle supporting leg at present.Multistage landing leg stretching structure mainly contains multistage hydraulic cylinder (CN102878146.A), pulley combined device (CN202518244.U) driven in two modes.These two kinds of modes have solved concrete pump truck arm cloth, have travelled and prop up a leg length difficult problem from structure.But exist some shortcomings: multistage hydraulic cylinder complex structure and oil pipe stringing difficulty; In landing leg stretching process, usually can clip broken oil pipe generation leakage of oil; Can not realize one-level, secondary supporting leg stretches out retraction simultaneously, and supporting leg to stretch out speed slow; Maintenance operation difficulty, must split out supporting leg could keep in repair; Pulley combined device has been realized one-level, secondary supporting leg simultaneous retractable, but can not two-stage supporting leg successively flexible, and supporting leg gut line is staggered, and the steel rope on pulley is easily job-hoped, and stringing, wiring all exist certain difficulty.
Summary of the invention
The utility model object is in order to overcome the deficiency of above-mentioned existence, provide that a kind of structure is simpler, stringing more easily, the rack-and-gear support leg retractor device of more reliable performance.
Rack-and-gear support leg retractor device, comprise: n gear, n toothed rack, n supporting leg, underframe, it is characterized in that: the first toothed rack is fixedly mounted on first order supporting leg, first gear is arranged on the outside of first order supporting leg, be arranged on gear that the first order props up leg outer side and to be arranged on tooth bar on first order supporting leg intermeshing, go down successively, until last toothed rack is fixedly mounted on n level supporting leg, last gear is arranged on the outside of n level supporting leg, be arranged on gear that n level props up leg outer side and to be arranged on tooth bar on n level supporting leg intermeshing, all gears drive by external application motor, the rotation of gear drives corresponding supporting leg stretch out or retract, and n-1 level supporting leg is spacing by n level supporting leg, n level supporting leg is spacing by underframe, n is not equal to zero natural number.
Rack-and-gear support leg retractor device, comprise: 1 supporting leg driver train, n-1 gear, n-1 toothed rack, a n supporting leg, underframe, it is characterized in that: described supporting leg driver train is fuel cylinder driving mechanism, fuel cylinder driving mechanism is made up of cylinder support, oil cylinder, oil cylinder bucket bearing, cylinder support is fixed on first order supporting leg, and oil cylinder bucket bearing is fixed on the supporting leg of the second stage, the flexible drive first order landing leg stretching of oil cylinder, the first toothed rack is fixedly mounted on the supporting leg of the second stage, first gear is arranged on the outside of second stage supporting leg, be arranged on gear on the supporting leg of the second stage and to be arranged on tooth bar on the supporting leg of the second stage intermeshing, go down successively, until last toothed rack is fixedly mounted on n level supporting leg, last gear is arranged on the outside of n level supporting leg, be arranged on gear that n level props up leg outer side and to be arranged on tooth bar on n level supporting leg intermeshing, all gears drive by external application motor, the rotation of gear drives corresponding supporting leg stretch out or retract, and n-1 level supporting leg is spacing by n level supporting leg, n level supporting leg is spacing by underframe, n is greater than 1 natural number.
Described supporting leg driver train is electric pushrod, and electric pushrod one end is fixed on first order supporting leg, and the other end is fixed on the supporting leg of the second stage, and electric pushrod is by motor pushing.
The utility model is with secondary supporting leg, and the first supporting leg is that fuel cylinder driving mechanism is that example illustrates rack-and-gear support leg retractor device.This device comprises fuel cylinder driving mechanism, 1 gear, 1 toothed rack, two supporting legs, fuel cylinder driving mechanism is made up of cylinder support, oil cylinder, oil cylinder bucket bearing, cylinder support is fixed on first order supporting leg, oil cylinder bucket bearing is fixed on the supporting leg of the second stage, the flexible drive first order landing leg stretching of oil cylinder, and first order supporting leg is spacing by second stage supporting leg; Tooth bar is fixedly mounted on the supporting leg of the second stage, gear is arranged on the outside of second stage supporting leg, be arranged on the gear that props up leg outer side in the second stage and to be arranged on tooth bar on the supporting leg of the second stage intermeshing, gear is driven by external application motor, the rotation of gear drives second stage supporting leg stretch out or retract, the stretching out or retract spacing by underframe of second stage supporting leg.
Landing leg stretching structural principle of the present utility model is:
Gear is driven by external application motor, and gear is by driving landing leg stretching with engaging of tooth bar.
Rack-and-gear support leg retractor device has replaced original multi-stage oil cylinder and pulley because of gear, tooth bar, and that has avoided that Multi-stage cylinder hydraulic pressure stringing and pulley line be wound around is loaded down with trivial details.Increased to a certain extent space residual between supporting leg, reduced greatly because narrow space clips broken hydraulic oil pipe and caused the fault rates such as leakage of oil, structure is more simple, performance is more stable; Because rack-and-gear is fixedly connected on outside and the side of supporting leg, as need repairing, only need to change rack-and-gear at a leg outer side and side, do not need whole piece supporting leg complete removal, this is more prone to installation and maintenance, has improved work efficiency; When the utility model can be realized multistage supporting leg, successively flexible, can select flexibly stretch mode according to different operating modes, different customer demands, make that cost of product is lower, performance is more comprehensive.
Brief description of the drawings
Fig. 1 is the constructional drawing of secondary supporting leg in the utility model.
Fig. 2 is the concrete flexible schematic diagram of implementing of secondary supporting leg in the utility model.
Detailed description of the invention
With secondary supporting leg, the first supporting leg is that fuel cylinder driving mechanism is that the utility model will be further described by reference to the accompanying drawings for example.
As shown in Figure 1, the utility model comprises fuel cylinder driving mechanism, 6,1 tooth bar of 1 gear 5, two supporting legs, underframe 7, and fuel cylinder driving mechanism is made up of cylinder support 2, oil cylinder 3, oil cylinder bucket bearing; Cylinder support 2 is fixed on first order supporting leg 1, and oil cylinder bucket bearing is fixed on second stage supporting leg 4, and the flexible drive first order supporting leg 1 of oil cylinder 3 is flexible, and first order supporting leg is spacing by second stage supporting leg; Tooth bar 5 is fixedly mounted on second stage supporting leg 4, gear 6 is arranged on the outside of second stage supporting leg 4, and gear is driven by external application motor, and the rotation of gear 6 and tooth bar 5 are intermeshing, drive second stage supporting leg stretch out or retract, and the stretching out or retract spacing by underframe of second stage supporting leg.When second stage supporting leg 4 stretches out, the piston rod in oil cylinder 3 promotes stretching out of first order supporting leg 1, thus the simultaneous retractable of the first order of realization, second stage supporting leg; Or when second stage landing leg stretching makes oil cylinder drive first order landing leg stretching behind certain position again, thereby realize the successively flexible of supporting leg.
In the time having n supporting leg, the first toothed rack is fixedly mounted on first order supporting leg, first gear is arranged on the outside of first order supporting leg, be arranged on gear that the first order props up leg outer side and to be arranged on tooth bar on first order supporting leg intermeshing, go down successively, until last toothed rack is fixedly mounted on n level supporting leg, last gear is arranged on the outside of n level supporting leg, is arranged on gear that n level props up leg outer side and to be arranged on tooth bar on n level supporting leg intermeshing.Gear is driven by external application motor, and the rotation of gear drives corresponding supporting leg stretch out or retract, and n-1 level supporting leg is spacing by n level supporting leg, and n level supporting leg is spacing by underframe, and n is not equal to zero natural number.N supporting leg all drives corresponding supporting leg stretch out or retract by the rotation of gear, also individual n supporting leg, and the first supporting leg is by fuel cylinder driving mechanism, and other supporting leg drives corresponding supporting leg stretch out or retract by the rotation of gear.
Concrete second stage landing leg stretching schematic diagram as shown in Figure 2, when gear 6 under the driving of external application motor as figure in A direction while rotating, because the engagement band carry-over bar 5 of rack-and-gear stretches out as the direction of arrow in figure; Because tooth bar 5 is to be fixed on the supporting leg of the second stage, so second stage supporting leg 4 stretches out under the drive of tooth bar 5; When second stage supporting leg 4 stretches out or certain one-phase, oil cylinder 3 promotes first order supporting leg 1 and stretches out, thereby realizes simultaneously or successively stretch out.Otherwise when gear 6 drives second stage supporting leg 4 to retract during along the opposite spin of A direction, oil cylinder 3 drives first order supporting leg 1 to retract, and retracts thereby realize supporting leg simultaneously or successively.Wherein in one-level leg structure, the drive configuration that drives one-level landing leg stretching can also be other the type of drive such as rack-and-gear, electric pushrod.
Claims (4)
1. rack-and-gear support leg retractor device, comprise: n gear, n toothed rack, n supporting leg, underframe, it is characterized in that: the first toothed rack is fixedly mounted on first order supporting leg, first gear is arranged on the outside of first order supporting leg, be arranged on gear that the first order props up leg outer side and to be arranged on tooth bar on first order supporting leg intermeshing, go down successively, until last toothed rack is fixedly mounted on n level supporting leg, last gear is arranged on the outside of n level supporting leg, be arranged on gear that n level props up leg outer side and to be arranged on tooth bar on n level supporting leg intermeshing, all gears drive by external application motor, the rotation of gear drives corresponding supporting leg stretch out or retract, and n-1 level supporting leg is spacing by n level supporting leg, n level supporting leg is spacing by underframe, n is not equal to zero natural number.
2. rack-and-gear support leg retractor device, comprise: 1 supporting leg driver train, n-1 gear, n-1 toothed rack, a n supporting leg, underframe, it is characterized in that: described supporting leg driver train is fuel cylinder driving mechanism, fuel cylinder driving mechanism is made up of cylinder support, oil cylinder, oil cylinder bucket bearing, cylinder support is fixed on first order supporting leg, and oil cylinder bucket bearing is fixed on the supporting leg of the second stage, the flexible drive first order landing leg stretching of oil cylinder, the first toothed rack is fixedly mounted on the supporting leg of the second stage, first gear is arranged on the outside of second stage supporting leg, be arranged on the gear that props up leg outer side in the second stage and to be arranged on tooth bar on the supporting leg of the second stage intermeshing, go down successively, until last toothed rack is fixedly mounted on n level supporting leg, last gear is arranged on the outside of n level supporting leg, be arranged on gear that n level props up leg outer side and to be arranged on tooth bar on n level supporting leg intermeshing, all gears drive by external application motor, the rotation of gear drives corresponding supporting leg stretch out or retract, and n-1 level supporting leg is spacing by n level supporting leg, n level supporting leg is spacing by underframe, n is greater than 1 natural number.
3. rack-and-gear support leg retractor device according to claim 2, it is characterized in that: described supporting leg driver train is electric pushrod, electric pushrod one end is fixed on first order supporting leg, and the other end is fixed on the supporting leg of the second stage, and electric pushrod is by motor pushing.
4. rack-and-gear support leg retractor device according to claim 2, it is characterized in that: comprise fuel cylinder driving mechanism, 1 gear, 1 toothed rack, two supporting legs, fuel cylinder driving mechanism is made up of cylinder support, oil cylinder, oil cylinder bucket bearing, cylinder support is fixed on first order supporting leg, oil cylinder bucket bearing is fixed on the supporting leg of the second stage, the flexible drive first order landing leg stretching of oil cylinder, and first order supporting leg is spacing by second stage supporting leg; Tooth bar is fixedly mounted on the supporting leg of the second stage, gear is arranged on the outside of second stage supporting leg, be arranged on the gear that props up leg outer side in the second stage and to be arranged on tooth bar on the supporting leg of the second stage intermeshing, gear is driven by external application motor, the rotation of gear drives second stage supporting leg stretch out or retract, the stretching out or retract spacing by underframe of second stage supporting leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320733673.9U CN203639018U (en) | 2013-11-19 | 2013-11-19 | Gear rack type supporting leg retracting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320733673.9U CN203639018U (en) | 2013-11-19 | 2013-11-19 | Gear rack type supporting leg retracting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203639018U true CN203639018U (en) | 2014-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320733673.9U Withdrawn - After Issue CN203639018U (en) | 2013-11-19 | 2013-11-19 | Gear rack type supporting leg retracting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203639018U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103588125A (en) * | 2013-11-19 | 2014-02-19 | 山推楚天工程机械有限公司 | Gear rack landing leg telescopic device |
| CN107953867A (en) * | 2017-12-27 | 2018-04-24 | 湖南响箭重工科技有限公司 | A kind of folding supporting leg and the engineering truck with folding supporting leg |
| CN108309589A (en) * | 2018-01-22 | 2018-07-24 | 李明 | The multistage automatic exhibition of medical chamber is closed flat face slideway and medical chamber |
| CN108635061A (en) * | 2018-05-04 | 2018-10-12 | 郑州大学第附属医院 | Bone surgery arm |
| CN110155886A (en) * | 2018-01-30 | 2019-08-23 | 张震 | A kind of adjustable building crane |
| CN111646400A (en) * | 2020-06-19 | 2020-09-11 | 罗永胜 | Chassis supporting mechanism for engineering machinery |
-
2013
- 2013-11-19 CN CN201320733673.9U patent/CN203639018U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103588125A (en) * | 2013-11-19 | 2014-02-19 | 山推楚天工程机械有限公司 | Gear rack landing leg telescopic device |
| CN103588125B (en) * | 2013-11-19 | 2016-05-18 | 山推楚天工程机械有限公司 | Rack-and-pinion support leg retractor device |
| CN107953867A (en) * | 2017-12-27 | 2018-04-24 | 湖南响箭重工科技有限公司 | A kind of folding supporting leg and the engineering truck with folding supporting leg |
| CN108309589A (en) * | 2018-01-22 | 2018-07-24 | 李明 | The multistage automatic exhibition of medical chamber is closed flat face slideway and medical chamber |
| CN110155886A (en) * | 2018-01-30 | 2019-08-23 | 张震 | A kind of adjustable building crane |
| CN108635061A (en) * | 2018-05-04 | 2018-10-12 | 郑州大学第附属医院 | Bone surgery arm |
| CN111646400A (en) * | 2020-06-19 | 2020-09-11 | 罗永胜 | Chassis supporting mechanism for engineering machinery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140611 Effective date of abandoning: 20160518 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |