CN201963811U - Automatic shift two-speed speed changing box and wheel-mounted crane thereof - Google Patents
Automatic shift two-speed speed changing box and wheel-mounted crane thereof Download PDFInfo
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- CN201963811U CN201963811U CN2011200379166U CN201120037916U CN201963811U CN 201963811 U CN201963811 U CN 201963811U CN 2011200379166 U CN2011200379166 U CN 2011200379166U CN 201120037916 U CN201120037916 U CN 201120037916U CN 201963811 U CN201963811 U CN 201963811U
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Abstract
本实用新型公开了一种自动换档双速变速箱及其轮胎起重机，该变速箱包括箱体，箱体内安装有输入轴、中间轴、输出轴以及与输入轴同轴线的主动轴，输入轴上固定装设一高速档主动齿轮，主动轴上固定装设一低速档主动齿轮以及第二液压摩擦离合器，中间轴上装设有高速档从动齿轮、低速档从动齿轮以及第一液压摩擦离合器，输出轴通过一对常啮合齿轮副与中间轴啮合连接，液压摩擦离合器的控制油路上设有液压排量检测装置以及根据液压排量信号改变液压油流向以使不同液压摩擦离合器离合的液压换向阀。轮胎起重机采用上述的变速箱。本实用新型具有结构简单、齿轮使用寿命长、传动精度高、可传递的转矩大、换档冲击小的优点。
The utility model discloses an automatic shifting two-speed gearbox and a tire crane thereof. The gearbox includes a box body, and an input shaft, an intermediate shaft, an output shaft and a drive shaft coaxial with the input shaft are installed in the box body. A high-speed driving gear is fixedly installed on the shaft, a low-speed driving gear and the second hydraulic friction clutch are fixed on the driving shaft, and a high-speed driven gear, a low-speed driven gear and the first hydraulic friction clutch are installed on the intermediate shaft. Clutch, the output shaft is meshed with the intermediate shaft through a pair of constant mesh gear pairs. The control oil circuit of the hydraulic friction clutch is equipped with a hydraulic displacement detection device and a hydraulic pressure that changes the flow direction of the hydraulic oil according to the hydraulic displacement signal to make different hydraulic friction clutches disengage. reversing valve. The tire crane adopts the above-mentioned gearbox. The utility model has the advantages of simple structure, long service life of gears, high transmission precision, large transferable torque and small shifting impact.
Description
Technical field
The utility model is mainly concerned with engineering vehicle, but particularly is used for the gearbox of the automaitc shfit of wheel mounted crane.
Background technique
The harbour wheel mounted crane will satisfy level land and two kinds of driving cycles of climbing because of in the running process, therefore need adorn a gearbox between oil hydraulic motor and transmission shaft, to satisfy it in the conversion between the speed of travel under these two kinds of operating modes.Because speed and moment of torsion under these two kinds of operating modes differ bigger, so need to adopt a kind of gearshift mechanism.The walking gearbox gear-shift mechanism that is used for the port machine tyre hoist at present generally adopts the shift fork gear shift, and as shown in Figure 1, the gear engagement by shift fork piece 22 and two pairs of duplicate gears 23 realizes gear shift.There is following problem in this kind gearbox designs in assembling and using process:
(1), during the gear shift of shift fork piece, need to move and another duplicate gear engagement, because the rotation of gear can produce the tooth situation relative with tooth, can produce very big impact like this, and be attended by vibrations, thereby can shorten the working life of gear;
(2), the machining accuracy of duplicate gear is lower, thereby can influence transmission accuracy and working life;
(3), when gear shift, can only be very low (, could realize under the situation of all the other thread forms≤300r/min) rectangle tooth speed discrepancy≤10r/min in state of rest or rotating speed.
The model utility content
Technical problem to be solved in the utility model is: at the deficiencies in the prior art, provide a kind of control simple and convenient, can when speed discrepancy differs under the bigger situation smooth shifting, gear shift, impact little and can automaitc shfit double-velocity transmission and wheel mounted crane thereof.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of automaitc shfit double-velocity transmission, comprise casing, in the described casing input shaft is installed, jack shaft, output shaft and with the driving shaft of input shaft coaxial line, fixing installing one top gear driving gear on the described input shaft, second hydraulic friction clutches that fixing installing one a bottom gear driving gear and an end are connected with described input shaft on the described driving shaft, be equiped with top gear driven gear on the described jack shaft with described each driving gear engagement, first hydraulic friction clutches that a bottom gear driven gear and an end are connected with described top gear driven gear, described output shaft is connected with a joggle with jack shaft by a pair of constant mesh gear is secondary, the control oil channel of described hydraulic friction clutches be provided with hydraulic pressure discharge capacity detection device and according to hydraulic pressure discharge capacity signal change hydraulic oil flow to so that the hydraulicdirectional control valve of different hydraulic friction clutches clutches.
As to further improvement of the utility model:
Described second hydraulic friction clutches is located between described top gear driving gear and the bottom gear driving gear, the splined hub of described second hydraulic friction clutches is connected on the described input shaft outer wall by spline housing, and the rotation hub of second hydraulic friction clutches is located on the described driving shaft outer wall by spline housing.
Described first hydraulic friction clutches is located at an end of described jack shaft, described first hydraulic friction clutches the rotation hub by spline and described jack shaft socket, the splined hub of first hydraulic friction clutches and described top gear driven gear are structure as a whole, described top gear driven gear by roller bearings on described jack shaft.
Described jack shaft is provided with first oil transportation channel, described first oil transportation channel, one end communicates with the oil cylinder of described first hydraulic friction clutches, the first oil transportation channel the other end communicates with described hydraulicdirectional control valve by pipeline, described driving shaft is provided with second oil transportation channel, described second oil transportation channel, one end communicates with the oil cylinder of described second hydraulic friction clutches, and the second oil transportation channel the other end communicates with described hydraulicdirectional control valve by pipeline.
Described input shaft, jack shaft and output shaft are arranged in parallel, and described each engaging gear is helical gear.
The utility model further provides a kind of wheel mounted crane, comprise chassis and last dress, the bottom of frame on described chassis is equiped with gearbox, the input end of described gearbox is connected with the output terminal of oil hydraulic motor, the output terminal of gearbox is connected with transmission shaft, and described gearbox is above-mentioned automaitc shfit double-velocity transmission.
Compared with prior art, advantage of the present utility model is:
1, automaitc shfit double-velocity transmission of the present utility model, on two axles that separate, hydraulic friction clutches respectively is set independently as gearshift mechanism, and the hydraulicdirectional control valve of hydraulic pressure discharge capacity detection device and may command hydraulic oil outbound course is set on its control oil channel, can utilize the oil pressure of hydraulic friction clutches piston cylinder to compress its friction plate, reach the purpose of transmitting torque.Can not produce the tooth situation relative during gear shift, impact lessly, can differ smooth shifting under the bigger situation, and its operation control ratio is easier at speed discrepancy with tooth, can remote-controlled operation, realize automaitc shfit.Have simple in structure, service life of gear is long, transmission accuracy is high, transferable torque is big, start advantage stably.
2, wheel mounted crane of the present utility model because of having adopted automaitc shfit double-velocity transmission of the present utility model, therefore also should possess above-mentioned advantage.
Description of drawings
Fig. 1 is the structural representation of gearshift mechanism in the prior art;
Fig. 2 is the structural representation of the utility model automaitc shfit double-velocity transmission;
Fig. 3 is the hydraulic principle schematic representation of the utility model automaitc shfit double-velocity transmission;
Fig. 4 is the structural representation of the utility model wheel mounted crane.
Marginal data
1, casing; 2, input shaft; 3, jack shaft; 31, first oil transportation channel; 4, output shaft; 5, driving shaft; 51, second oil transportation channel; 6, top gear driving gear; 7, bottom gear driving gear; 8, top gear driven gear; 9, bottom gear driven gear; 10, first hydraulic friction clutches; 11, second hydraulic friction clutches; 12, hydraulic pressure discharge capacity detection device; 13, hydraulicdirectional control valve; 14,15, constant mesh gear pair; 17, chassis; 18, go up dress; 19, oil hydraulic motor; 20, transmission shaft; 21, gearbox; 22, shift fork piece; 23, duplicate gear.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing the utility model is further described.
As shown in Figures 2 and 3, automaitc shfit double-velocity transmission of the present utility model, comprise casing 1, input shaft 2 is installed in the casing 1, jack shaft 3, output shaft 4 and with the driving shaft 5 of input shaft 2 coaxial lines, fixing installing one top gear driving gear 6 on the input shaft 2, second hydraulic friction clutches 11 that fixing installing one a bottom gear driving gear 7 and an end are connected with input shaft 2 on the driving shaft 5, be equiped with top gear driven gear 8 on the jack shaft 3 with each driving gear engagement, first hydraulic friction clutches 10 that a bottom gear driven gear 9 and an end are connected with top gear driven gear 8, output shaft 4 is by a pair of constant mesh gear pair 14,15 are connected with a joggle with jack shaft 3, the control oil channel of hydraulic friction clutches be provided with hydraulic pressure discharge capacity detection device 12 and according to hydraulic pressure discharge capacity signal change hydraulic oil flow to so that the hydraulicdirectional control valve 13 of different hydraulic friction clutches clutches.By hydraulic friction clutches respectively is set independently on jack shaft 3 that separates and driving shaft 5 as gearshift mechanism, and the hydraulicdirectional control valve 13 of hydraulic pressure discharge capacity detection device 12 and may command hydraulic oil outbound course is set on its control oil channel, control the torque of oil hydraulic motor 19 outputs (being subjected to the resistance synchronous) by detecting the hydraulic pressure displacement size with tire, hydraulicdirectional control valve 13 is the outbound course of changeable hydraulic oil, utilize the oil pressure of hydraulic friction clutches piston cylinder to compress its friction plate, reach the automatic switchover of transmitting between different two kinds of gears of torque realization.Can not produce the tooth situation relative during this structure gear shift, impact lessly, can differ smooth shifting under the bigger situation, and its operation control ratio is easier at speed discrepancy with tooth, can remote-controlled operation.
In the present embodiment, input shaft 2, jack shaft 3, output shaft 4 and driving shaft 5 are arranged in parallel, and each engaging gear is helical gear.Input shaft 2 one ends link to each other with the output terminal of oil hydraulic motor 19, the other end is supported in the middle part of casing 1 by ball bearing, driving shaft 5 one ends are supported in the set endoporus of input shaft 2 output terminals by linear bearing, and the other end is supported on the casing 1 by ball bearing, and its end is provided with hubcap.Jack shaft 3 two ends all are supported on the casing 1 by roller bearing, and two ends are equipped with hubcap.Output shaft 4 is installed on the casing 1 by roller bearing, and its output terminal stretches out outside the casing 1, and is connected with the adpting flange that is used to connect transmission shaft 20.
Second hydraulic friction clutches 11 is located between top gear driving gear 6 and the bottom gear driving gear 7, the splined hub of second hydraulic friction clutches 11 is connected on input shaft 2 outer walls by spline housing, and the rotation hub of second hydraulic friction clutches 11 is located on driving shaft 5 outer walls by spline housing.Driving shaft 5 is provided with second oil transportation channel, 51, the second oil transportation channels, 51 1 ends and communicates with the oil cylinder of second hydraulic friction clutches 11, and second oil transportation channel, 51 the other ends communicate with inlet opening on the hubcap, and pipeline communicates with hydraulicdirectional control valve 13.
When the low speed operating mode, hydraulic oil is imported second hydraulic friction clutches 11, the piston of second hydraulic friction clutches 11 compresses in it, outside friction disc, make it be in the state of joint, this moment, the piston of first hydraulic friction clutches 10 was return original position under the effect of Returnning spring, in it, outside friction disc disconnects, vice division chief of high speed gear is in idling conditions, the rotating speed of oil hydraulic motor input passes through the interior friction plate of second hydraulic friction clutches 11 successively, outside friction disc, rotate hub and pass to driving shaft 5, driving shaft 5 rotates synchronously, drive secondary rotation of bootom gear and pass to jack shaft 3, pass to output shaft 4 outputs by the constant mesh gear pair again.
In the present embodiment, first hydraulic friction clutches 10 is located at the end of jack shaft 3 by input shaft 2, and between top gear driven gear 8 and casing 1, top gear driven gear 8 by roller bearings on jack shaft 3, the splined hub of first hydraulic friction clutches 10 is connected with top gear driven gear 8, be structure as a whole in the present embodiment, first hydraulic friction clutches 10 the rotation hub by spline and jack shaft 3 sockets.Jack shaft 3 is provided with first oil transportation channel, 31, the first oil transportation channels, 31 1 ends and communicates with the oil cylinder of first hydraulic friction clutches 10, and first oil transportation channel, 31 the other ends communicate with inlet opening on the hubcap, and communicate with hydraulicdirectional control valve 13 by pipeline.
When high-speed working condition, hydraulic oil is imported first hydraulic friction clutches 10, the piston of first hydraulic friction clutches 10 compresses its inside and outside friction plate, this moment, the inside and outside friction plate of second hydraulic friction clutches 11 disconnected, driving shaft 5 does not rotate, the rotating speed of oil hydraulic motor input is passed to jack shaft 3 by high speed gear's pair, the interior friction plate of first hydraulic friction clutches 10, outside friction disc, rotation hub successively, and jack shaft 3 rotations drive secondary rotation of constant mesh gear and pass to output shaft 4 outputs.
As shown in Figure 4, wheel mounted crane of the present utility model, comprise chassis 17 and on adorn 18, the bottom of frame on chassis 17 is equiped with gearbox 21, the input end of gearbox 21 is connected with the output terminal of oil hydraulic motor 19, the output terminal of gearbox 21 is connected with transmission shaft 20, and gearbox 21 is above-mentioned automaitc shfit double-velocity transmission.
The above only is a preferred implementation of the present utility model, and protection domain of the present utility model also not only is confined to the foregoing description, and all technological schemes that belongs under the utility model thinking all belong to protection domain of the present utility model.Should be pointed out that for those skilled in the art the some improvements and modifications not breaking away under the utility model principle prerequisite all should be considered as protection domain of the present utility model.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200379166U CN201963811U (en) | 2011-02-14 | 2011-02-14 | Automatic shift two-speed speed changing box and wheel-mounted crane thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200379166U CN201963811U (en) | 2011-02-14 | 2011-02-14 | Automatic shift two-speed speed changing box and wheel-mounted crane thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201963811U true CN201963811U (en) | 2011-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200379166U Expired - Fee Related CN201963811U (en) | 2011-02-14 | 2011-02-14 | Automatic shift two-speed speed changing box and wheel-mounted crane thereof |
Country Status (1)
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| CN (1) | CN201963811U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384255A (en) * | 2011-09-09 | 2012-03-21 | 三一集团有限公司 | Automatic shift type speed changing box device and rubber-tyred engineering machinery |
| CN102927212A (en) * | 2012-09-26 | 2013-02-13 | 杭州萧山江南通用机械厂 | Gear case for decelerating or accelerating |
| CN103851135A (en) * | 2014-03-11 | 2014-06-11 | 江苏赫夫特齿轮制造有限公司 | High-power double-speed-ratio gearbox |
| CN104534032A (en) * | 2014-12-16 | 2015-04-22 | 山东永华机械有限公司 | Machine tool main shaft speed changing box |
| CN110725905A (en) * | 2018-07-17 | 2020-01-24 | 河南省瑞歌传动机械有限公司 | Electric automobile and double-speed gearbox thereof |
-
2011
- 2011-02-14 CN CN2011200379166U patent/CN201963811U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384255A (en) * | 2011-09-09 | 2012-03-21 | 三一集团有限公司 | Automatic shift type speed changing box device and rubber-tyred engineering machinery |
| WO2013033992A1 (en) * | 2011-09-09 | 2013-03-14 | 三一集团有限公司 | Automatic shifting transmission device and tyred engineering machinery |
| CN102927212A (en) * | 2012-09-26 | 2013-02-13 | 杭州萧山江南通用机械厂 | Gear case for decelerating or accelerating |
| CN103851135A (en) * | 2014-03-11 | 2014-06-11 | 江苏赫夫特齿轮制造有限公司 | High-power double-speed-ratio gearbox |
| CN104534032A (en) * | 2014-12-16 | 2015-04-22 | 山东永华机械有限公司 | Machine tool main shaft speed changing box |
| CN110725905A (en) * | 2018-07-17 | 2020-01-24 | 河南省瑞歌传动机械有限公司 | Electric automobile and double-speed gearbox thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20130214 |