CN105179371A - Leveling gear and rack type swing hydraulic cylinder and fire engine using structure - Google Patents
Leveling gear and rack type swing hydraulic cylinder and fire engine using structure Download PDFInfo
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- CN105179371A CN105179371A CN201510544597.0A CN201510544597A CN105179371A CN 105179371 A CN105179371 A CN 105179371A CN 201510544597 A CN201510544597 A CN 201510544597A CN 105179371 A CN105179371 A CN 105179371A
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- 238000005461 lubrication Methods 0.000 claims description 4
- 210000005069 ears Anatomy 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 32
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
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Abstract
The invention discloses a leveling gear and rack type swing hydraulic cylinder. The leveling gear and rack type swing hydraulic cylinder comprises a gear and rack type swing pressure cylinder, wherein the gear and rack type swing pressure cylinder is arranged between a working platform (1.1) and a ladder rack (1.2); the hydraulic cylinder performs a reciprocating motion to drive a gear through a rack to covert to forward/reverse swing rotation of a gear shaft (6) so as to drive the working platform (1.1) to perform the swing leveling by surrounding the axle of the gear shaft (6); the gear and rack type swing hydraulic cylinder comprises a cylinder barrel (1), a rack cylinder rod (5) arranged in the cylinder barrel (1), and the gear shaft (6) engaged with the rack cylinder rod (5); pistons are respectively mounted at the two ends of the rack cylinder rod; the cylinder barrel is divided into a cavity A and a cavity B; and one-way balance valves are arranged at the two ends of the cylinder barrel. The invention further discloses a fire engine using the structure. The swing hydraulic cylinder can simplify the boom structure and promote the boom performance, can reasonably arrange a hydraulic transmission mechanism for driving the platform to rotationally level in a limited working platform space, and guarantees a larger rotating angle range.
Description
Technical field
The present invention relates to a kind of used in fire-fighting working platform leveling device, specifically a kind of leveling gear rack type swing oil hydraulic cylinder and use the fire-fighting truck of this structure.
Background technique
As shown in Figure 1: the jib of aerial ladder truck is ladder bed structure, have working platform 1.1 on ladder 1.2 top, bottom be connected to turntable 1.3, rescue personnel with ladder 1.2 for carrier can be climbed up and down between ground and working platform.
Working platform 1.1 along with ladder 1.2 luffing, flexible need autorotation to regulate, to keep the level of working platform 1.1, the leveling action of this rotation adjustment is generally driven by hydraulic jack.
The hydraulic leveling system of existing aerial ladder truck remains and adopts common double-action rectilinear motion oil cylinder 1.4 to drive, its form as shown in Figure 2, be fixed on ladder 1.2 end hinge at the bottom of the oil cylinder of double-action rectilinear motion oil cylinder 1.4, piston club head is fixed on working platform 1.1 hinge, and axis of rotation working platform 1.1 being connected around flat worktable 1.1 by oil cylinder flexible with ladder 1.2 is to realize the leveling of working platform 1.1.
Because aerial ladder truck jib structure is compact, that respectively saves arm stretches out the extending means be made up of pulley and steel wire tow line.As hydraulic pipe line Idle wheel mode of movement, also need to arrange pulley and stay cord in the relevant position of each joint arm; Therefore there is following shortcoming in prior art:
(1) by hydraulic pipe line Conveying chains hydraulic power is delivered to the double-action rectilinear motion oil cylinder 1.4 working platform 1.1 from turntable, need to adopt multistage Conveying chains, section bar bracket, tray rack and many very long hydraulic hoses, increase width and the weight of jib;
(2) restriction of double-action rectilinear motion oil cylinder 1.4 installing space is subject to, the stroke of oil cylinder is very little, and the pendulum angle scope of working platform 1.1 is just very little, and under state of returning the vehicle to the garage and knock off like this, working platform 1.1 grades is in operator cabin front, block pilot's line of vision, affect driving safety;
(3) delivery hose is exposed in jib, is easy to the wearing and tearing when moving, and the tensioning dynamics of Idle wheel also needs to control suitable, and tension force crosses conference affects hose life, and the too small meeting of tension force makes that flexible pipe is sagging causes wearing and tearing.
Summary of the invention
The invention provides a kind of leveling gear rack type swing oil hydraulic cylinder and use the fire-fighting truck of this structure, jib structure can be simplified, also promote jib performance, and in limited working platform space, can reasonable Arrangement drive platform to rotate the fluid drive mechanism of leveling, and ensure larger rotation angle range.
To achieve these goals, the technical solution used in the present invention is: a kind of leveling gear rack type swing oil hydraulic cylinder, and it comprises:
Gear rack type swing cylinder pressure; It is arranged on and reciprocates through rack drives gear between working platform and ladder, by oil hydraulic cylinder, is converted into forward and reverse swing rotary of gear shaft, and then drives working platform to carry out swing leveling around gear shaft axis.
Described gear rack type swing cylinder pressure comprises cylinder barrel, be arranged on rack cylinder bar in cylinder barrel and with rack cylinder bar meshed gears axle;
Described rack cylinder bar two ends are all installed piston and cylinder barrel are divided into A chamber and B chamber, and described cylinder barrel two ends are equipped with one-way balance valve.
Described cylinder barrel both sides are provided with sealing end cap, and described gear shaft end is provided with gear shaft end cap, gear shaft is provided with at least two lubrication rings.
Side relative with gear shaft on described cylinder barrel is provided with two hinge ears;
8 bolts hole that described gear rack type swing cylinder pressure is fixedly connected with working platform by two hinge ears, covered by gear shaft terminal are fixedly connected with ladder end.
A1 and the a2 mouth that described cylinder barrel two ends use when having Installation and Debugging near one-way balance valve place.
Two described one-way balance valves are integrated in A chamber and the B chamber of cylinder barrel respectively.
Described gear rack type swing oil hydraulic cylinder is single gear, rack structure or multi-gear, many rack structures.
Described gear rack type swing oil hydraulic cylinder inside is also integrated with the sensor of detected pressures, temperature.
Also disclose a kind of fire-fighting truck, comprise the leveling gear rack type swing oil hydraulic cylinder of any one above-mentioned form.
Compared with traditional double-action rectilinear motion oil cylinder, the present invention has the following advantages:
(1) the working platform leveling hydraulic system of gear rack type swing oil hydraulic cylinder of the present invention is live hydraulic system, be directly installed on working platform, do not need, on aerial ladder jib, hydraulic hose transporting system is installed, alleviate jib weight, simplify jib to install, reduce jib size, well improve outward appearance and the performance of car load;
(2) flow needed for gear-and-rack swing hydraulic cylinder, pressure are less, make independent hydraulically controlled leveling system lightweight, miniaturization, can be reasonable, compact be arranged on working platform, do not affect platform activity space, do not affect outward appearance, and facilitate hydraulic pressure to keep in repair and change;
(3) gear-and-rack swing hydraulic cylinder pivot angle is large, can reach 180 ° even larger, by working platform half-twist, can turn and be buckled in jib top, open driving vision, makes jib and working platform integration.
Accompanying drawing explanation
Fig. 1 is fire-fighting truck overall structure schematic diagram;
Fig. 2 is existing hydraulic leveling system schematic diagram;
Fig. 3 is structural front view of the present invention;
Fig. 4 is the sectional drawing of Fig. 3;
Fig. 5 is hydraulic schematic diagram of the present invention.
In figure: 1.1, working platform, 1.2, ladder, 1.3, turntable, 1.4, double-action rectilinear motion oil cylinder, 1, cylinder barrel, 2, end cap, 3, gear shaft end cap, 4, lubrication ring, 5, rack cylinder bar, 6, gear shaft, 7, piston, 8, one-way balance valve.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Wherein, the present invention is with accompanying drawing 3 for benchmark, and the left and right, upper and lower of accompanying drawing 3 is of the present invention left and right, upper and lower.Should mainly arrive: unless specifically stated otherwise, otherwise positioned opposite, numerical value of the parts of setting forth in the present embodiment etc. is not limited to scope of the present invention.
As shown in Figure 1, a kind of leveling gear rack type swing oil hydraulic cylinder, it comprises:
Gear rack type swing cylinder pressure; It is arranged on and namely cuts with scissors ear by two between working platform 1.1 with ladder 1.2 and be fixedly connected with working platform 1.1, be fixedly connected with ladder 1.2 end by the bolt hole of 8 on gear shaft end cap 3;
It reciprocates through rack drives gear by oil hydraulic cylinder, is converted into forward and reverse swing rotary of gear shaft 6, and then drives working platform 1.1 to carry out swing leveling around gear shaft 6 axis.
As shown in Figure 4; Described gear rack type swing cylinder pressure comprises cylinder barrel 1, be arranged on rack cylinder bar 5 in cylinder barrel 1 and with rack cylinder bar 5 meshed gears axle 6;
Described rack cylinder bar 5 two ends are all installed piston 7 and cylinder barrel 1 are divided into A chamber and B chamber, and described cylinder barrel 1 two ends are equipped with one-way balance valve 8, and the unidirectional balance 8 on the left of setting Fig. 4 is for comprising c1 and b1 hydraulic fluid port, and the unidirectional balance 8 on right side comprises c2 and b2 hydraulic fluid port.
As shown in Figure 3, described cylinder barrel 1 both sides are provided with sealing end cap 2, and described gear shaft 6 end is provided with gear shaft end cap 3, gear shaft 6 is provided with at least two lubrication rings 4; On described cylinder barrel 1, the side relative with gear shaft 6 is provided with two and cuts with scissors ear;
Further, a1 and the a2 mouth used when cylinder barrel 1 two ends stated have Installation and Debugging near one-way balance valve 8 place, a1 and a2 mouth is exhaust port, a1 and a2 mouth screw plug blocks when working properly.
Further, two described one-way balance valves 8 are integrated in A chamber and the B chamber of cylinder barrel 1 respectively, both ensure that stationarity and the Security of working platform 1.1 leveling action, in turn simplify hydraulic system oil circuit and arrange.
Further.Described gear rack type swing oil hydraulic cylinder can select single gear, rack structure or multi-gear, many rack structures, and the structure of various ways satisfies the demands.
In order to detect pressure in oil hydraulic cylinder and temperature, be also integrated with the sensor of detected pressures, temperature in described gear rack type swing oil hydraulic cylinder inside.
The invention also discloses a kind of fire-fighting truck, comprise the leveling gear rack type swing oil hydraulic cylinder of any above-mentioned form.
As shown in Figure 5, pressure oil enters the A chamber of oil cylinder from the c1 mouth of the one-way balance valve 8 in left side, and simultaneously pressure oil enters from b2 mouth and opens one-way balance valve 8 and make the oil return of B chamber, and now rack cylinder bar 5 moves to the right, and driven gear axle 6 is rotated counterclockwise; On the contrary, pressure oil enters oil cylinder B chamber from the c2 mouth of the one-way balance valve 8 on right side, and simultaneously pressure oil enters from b1 mouth and opens equilibrium valve and make the oil return of A chamber, and rack cylinder bar 5 moves to the left, and driven gear axle 6 turns clockwise.
Because gear shaft 6 is fixedly connected with gear shaft end cap 3, carry out swing leveling with regard to driving working platform 1.1 around gear shaft 6 axis.
By learning above, needed for gear-and-rack swing hydraulic cylinder, flow, pressure are less, make independent hydraulically controlled leveling system lightweight, miniaturization, can be reasonable, compact be arranged on working platform 1.1, do not affect platform activity space, do not affect outward appearance, and facilitate hydraulic pressure to keep in repair and change;
The hydraulic system that the present invention uses is live hydraulic system, be directly installed on working platform 1.1, do not need, on aerial ladder jib, hydraulic hose transporting system is installed, alleviate jib weight, simplify jib to install, reduce jib size, well improve outward appearance and the performance of car load;
Gear-and-rack swing hydraulic cylinder pivot angle is large, can reach 180 ° even larger, by working platform half-twist, can turn and be buckled in jib top, open driving vision, makes jib and working platform 1.1 integration.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any reference character in claim should be considered as the claim involved by limiting.
The above; be only preferred embodiment of the present invention; not in order to limit the present invention, every above embodiment is done according to technical spirit of the present invention any trickle amendment, equivalently replace and improve, within the protection domain that all should be included in technical solution of the present invention.
Claims (9)
1. a leveling gear rack type swing oil hydraulic cylinder, is characterized in that, it comprises:
Gear rack type swing cylinder pressure; It is arranged on and reciprocates through rack drives gear between working platform (1.1) and ladder (1.2), by oil hydraulic cylinder, be converted into forward and reverse swing rotary of gear shaft (6), and then drive working platform (1.1) to carry out swing leveling around gear shaft (6) axis.
2. a kind of leveling gear rack type swing oil hydraulic cylinder according to claim 1, it is characterized in that, described gear rack type swing cylinder pressure comprises cylinder barrel (1), be arranged on rack cylinder bar (5) in cylinder barrel (1) and with rack cylinder bar (5) meshed gears axle (6);
Described rack cylinder bar (5) two ends are all installed piston (7) and cylinder barrel (1) are divided into A chamber and B chamber, and described cylinder barrel (1) two ends are equipped with one-way balance valve (8).
3. a kind of leveling gear rack type swing oil hydraulic cylinder according to claim 2, it is characterized in that, described cylinder barrel (1) both sides are provided with sealing end cap (2), and described gear shaft (6) end is provided with gear shaft end cap (3), gear shaft (6) is provided with at least two lubrication rings (4).
4. a kind of leveling gear rack type swing oil hydraulic cylinder according to claim 3, is characterized in that, the upper side relative with gear shaft (6) of described cylinder barrel (1) is provided with two and cuts with scissors ear;
Described gear rack type swing cylinder pressure is fixedly connected with working platform (1.1) by two hinge ears, is fixedly connected with ladder (1.2) end by 8 bolts hole on gear shaft end cap (3).
5. a kind of leveling gear rack type swing oil hydraulic cylinder according to claim 3, is characterized in that, a1 and the a2 mouth used when described cylinder barrel (1) two ends have Installation and Debugging near one-way balance valve (8) place.
6. a kind of leveling gear rack type swing oil hydraulic cylinder according to claim 2, is characterized in that, two described one-way balance valves (8) are integrated in A chamber and the B chamber of cylinder barrel (1) respectively.
7. a kind of leveling gear rack type swing oil hydraulic cylinder according to claim 1, is characterized in that, described gear rack type swing oil hydraulic cylinder is single gear, rack structure or multi-gear, many rack structures.
8. a kind of leveling gear rack type swing oil hydraulic cylinder according to claim 7, is characterized in that, described gear rack type swing oil hydraulic cylinder inside is also integrated with the sensor of detected pressures, temperature.
9. a fire-fighting truck, is characterized in that, comprises arbitrary described a kind of leveling gear rack type swing oil hydraulic cylinder in claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510544597.0A CN105179371A (en) | 2015-08-31 | 2015-08-31 | Leveling gear and rack type swing hydraulic cylinder and fire engine using structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510544597.0A CN105179371A (en) | 2015-08-31 | 2015-08-31 | Leveling gear and rack type swing hydraulic cylinder and fire engine using structure |
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| CN105179371A true CN105179371A (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510544597.0A Pending CN105179371A (en) | 2015-08-31 | 2015-08-31 | Leveling gear and rack type swing hydraulic cylinder and fire engine using structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240368A (en) * | 2016-12-27 | 2018-07-03 | 哈尔滨圣高强科技有限公司 | Hydraulic cylinder sealing device and installation method based on rack pinion |
| CN109296014A (en) * | 2017-07-25 | 2019-02-01 | 卡特彼勒公司 | Coupler assembly for coupling an arm to a work tool |
| CN109578362A (en) * | 2018-12-27 | 2019-04-05 | 山东南海气囊工程有限公司 | It is a kind of without sealed gear-and-rack swing hydraulic cylinder |
| CN111467720A (en) * | 2020-05-27 | 2020-07-31 | 徐工集团工程机械有限公司 | Sand throwing system and sand throwing fire extinguisher |
Citations (6)
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|---|---|---|---|---|
| CN2383833Y (en) * | 1999-07-09 | 2000-06-21 | 上海市区供电局汽车修理厂 | Automatic balancer of cabin for foldable arm type high-altitude operation car |
| CN101476576A (en) * | 2009-01-20 | 2009-07-08 | 青岛捷能汽轮机集团股份有限公司 | Rotating servo oil motor |
| CN102910561A (en) * | 2012-10-31 | 2013-02-06 | 南车四方车辆有限公司 | Aerial work platform and autorail |
| CN104528609A (en) * | 2014-12-28 | 2015-04-22 | 浙江鼎力机械股份有限公司 | Bridge type operation platform |
| CN204851838U (en) * | 2015-05-29 | 2015-12-09 | 徐州徐工液压件有限公司 | YT type is high reliability oscillating leveling pneumatic cylinder for fire engine |
| CN204985155U (en) * | 2015-08-31 | 2016-01-20 | 徐州重型机械有限公司 | Leveling rack and pinion formula rotary actuator and use fire engine of this structure |
-
2015
- 2015-08-31 CN CN201510544597.0A patent/CN105179371A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2383833Y (en) * | 1999-07-09 | 2000-06-21 | 上海市区供电局汽车修理厂 | Automatic balancer of cabin for foldable arm type high-altitude operation car |
| CN101476576A (en) * | 2009-01-20 | 2009-07-08 | 青岛捷能汽轮机集团股份有限公司 | Rotating servo oil motor |
| CN102910561A (en) * | 2012-10-31 | 2013-02-06 | 南车四方车辆有限公司 | Aerial work platform and autorail |
| CN104528609A (en) * | 2014-12-28 | 2015-04-22 | 浙江鼎力机械股份有限公司 | Bridge type operation platform |
| CN204851838U (en) * | 2015-05-29 | 2015-12-09 | 徐州徐工液压件有限公司 | YT type is high reliability oscillating leveling pneumatic cylinder for fire engine |
| CN204985155U (en) * | 2015-08-31 | 2016-01-20 | 徐州重型机械有限公司 | Leveling rack and pinion formula rotary actuator and use fire engine of this structure |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240368A (en) * | 2016-12-27 | 2018-07-03 | 哈尔滨圣高强科技有限公司 | Hydraulic cylinder sealing device and installation method based on rack pinion |
| CN109296014A (en) * | 2017-07-25 | 2019-02-01 | 卡特彼勒公司 | Coupler assembly for coupling an arm to a work tool |
| US11274413B2 (en) | 2017-07-25 | 2022-03-15 | Caterpillar Inc. | Coupler assembly for coupling an arm to a work tool |
| CN109296014B (en) * | 2017-07-25 | 2022-10-18 | 卡特彼勒公司 | Coupler assembly for coupling an arm to a work tool |
| CN109578362A (en) * | 2018-12-27 | 2019-04-05 | 山东南海气囊工程有限公司 | It is a kind of without sealed gear-and-rack swing hydraulic cylinder |
| CN111467720A (en) * | 2020-05-27 | 2020-07-31 | 徐工集团工程机械有限公司 | Sand throwing system and sand throwing fire extinguisher |
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| PB01 | Publication | ||
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170117 Address after: 221004 Jiangsu Province, Xuzhou City Yunlong District No. 165 Applicant after: Xugong fire safety equipment Co. Ltd. Address before: 221004 Xuzhou, Zhejiang Province, Jiangsu Road No. 165 Applicant before: Xuzhou Heavy Machinery Co., Ltd. |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151223 |
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| WD01 | Invention patent application deemed withdrawn after publication |