CN103496322A - Crane and engine power system thereof - Google Patents
Crane and engine power system thereof Download PDFInfo
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- CN103496322A CN103496322A CN201310496385.0A CN201310496385A CN103496322A CN 103496322 A CN103496322 A CN 103496322A CN 201310496385 A CN201310496385 A CN 201310496385A CN 103496322 A CN103496322 A CN 103496322A
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Abstract
The invention discloses a crane and an engine power system thereof. The engine power system comprises a transmission of an engine and a transfer case. The transmission comprises a flywheel and an engine output shaft which are fixed with each other. The transfer case comprises a transfer case input shaft which can rotate along with the transmission. The engine power system further comprises a disconnection and connection device and a control device. The control device controls the disconnection and connection device to be located at a first working position or a second working position, so that the disconnection and connection device enables the transfer case input shaft and the transmission to be connected or disconnected. Through the design, when the engine is started, the transmission of the engine can be disconnected with the transfer case input shaft through the disconnection and connection device and the control device, then both the transfer case and a hydraulic system which is connected with the transfer case are disconnected with the engine, and therefore load resistance generated when the engine is started is completely eliminated. When the engine is started, only the resistance of the engine itself needs to be overcome, and a starting motor of the engine can start the engine smoothly under any working condition.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of hoisting crane and engine power system thereof.
Background technology
Getting on the bus of hoisting crane is provided with auxiliary gear box, this auxiliary gear box is different from the auxiliary gear box of conventional automobile, crane is with being provided with a series of normal connection teeth wheels in auxiliary gear box, and without special control mechanism, its radical function is: increase power taking interface, reasonable distribution engine output power.At present, on the full Terrain Cranes of large-tonnage, car engine directly is connected with auxiliary gear box, and hydraulic efficiency pressure system directly is connected with auxiliary gear box.
Please refer to Fig. 1, Fig. 1 is the structural representation that a kind of typical driving engine is connected with auxiliary gear box.
Auxiliary gear box comprises transfer case housing 12 and is positioned at its inner gear cluster.In figure, transfer case housing 12 is fixedly connected with flywheel shell of engine 11, and the flywheel 13 in clutch bell 11 is fixed with the output shaft (not shown) of driving engine, and output shaft is plugged in the output shaft mounting hole 131 of flywheel 13.
Be provided with the coupler terminal pad 14 of coupler (not shown) in auxiliary gear box, coupler is plugged in the coupler mounting hole 141 of coupler terminal pad 14.Flywheel 13 and the coupler of driving engine directly are connected by bolt, and coupler directly is connected with the auxiliary gear box input shaft.When engine starting, the output shaft of driving engine just drives the gear cluster setting in motion in auxiliary gear box by coupler, and auxiliary gear box inside directly is connected with oil pump, therefore the resistance that now need to overcome during engine starting comprises:
A, driving engine self resistance;
B, auxiliary gear box internal drag;
C, hydraulic efficiency pressure system resistance (oil pump drive hydraulic efficiency pressure system).
Visible, the resistance of engine starting is larger, and when especially ambient temperature is low, in auxiliary gear box inner engine oil, power hydraulic system, hydraulic oil viscosity increases, and the resistance of engine starting can further increase.Therefore, the starter motor of driving engine need to overcome very large resisting moment, and this resisting moment even can exceed the maximum torque that starter motor can provide, thereby causes driving engine to start.
For solving crane engine starting difficult problem, general employing is carried out local temperature to engine interior and is improved (increase preheating device), periodic replacement hydraulic air wet goods mode, to reduce driving engine itself and load resistance.But this type of scheme only plays certain improvement effect to solving the engine starting difficulty, can't thoroughly solve the harmful effect that driving engine driven loads resistance brings greatly, and cost is high, improves effect also not obvious.
In view of this, how improving the engine system with auxiliary gear box, to eliminate the engine loading resistance, thereby reduce the starting resistance square, driving engine can be started smoothly, is those skilled in the art's technical matterss urgently to be resolved hurrily.
Summary of the invention
For solving the problems of the technologies described above, purpose of the present invention is for providing a kind of hoisting crane and engine power system thereof.This engine system can be eliminated the engine loading resistance, thereby reduces the starting resistance square, and driving engine can be started smoothly.
Engine power system provided by the invention, comprise the driving device of driving engine and auxiliary gear box; Described driving device comprises flywheel, the engine output shaft fixed, and described auxiliary gear box comprises the auxiliary gear box input shaft that can rotate with described driving device; The engine power system also comprises disconnecting device and control setup, and described control setup is controlled described disconnecting device in the first/the second control position, so that described disconnecting device connects/disconnect described auxiliary gear box input shaft and described driving device.
So design, when engine starting, can the driving device of driving engine and auxiliary gear box input shaft be disconnected by disconnecting device and control setup, auxiliary gear box and the hydraulic efficiency pressure system that is connected with auxiliary gear box all disconnect with driving engine, thereby the load resistance while thoroughly having eliminated engine starting, only need to overcome self resistance during engine starting, the starter motor of driving engine equal start the engine successfully under any operating mode.
Preferably, the periphery of described engine output shaft is provided with the output shaft external tooth, and described auxiliary gear box input shaft has the input shaft internal tooth; Described disconnecting device comprises the connection axle sleeve, and described coupling spindle cover has can be respectively and axle sleeve internal tooth, the axle sleeve external tooth of described output shaft external tooth, the engagement of described input shaft internal tooth;
Described control setup drives described connection axle sleeve along the moving axially of described engine output shaft so that described connection axle sleeve can with described auxiliary gear box input shaft and described engine output shaft, the two meshes simultaneously, or at least with the two in one break away from.
Preferably, there is endplay between the clutch bell of described flywheel or driving engine and described auxiliary gear box input shaft, described engine output shaft inserts described auxiliary gear box input shaft, described connection axle sleeve moves axially preset distance towards described flywheel, and the axle sleeve external tooth of described connection axle sleeve and the input shaft internal tooth of described auxiliary gear box input shaft break away from.
Preferably, described control setup comprises the locations that inserts described engine output shaft, the mandrel that axially inserts described engine output shaft, and drives the axially movable handle of described mandrel; Described mandrel is fixed with the described axle sleeve that connects by described locations; Described engine output shaft is provided with for described locations and the axially movable passage of described mandrel.
Preferably, described locations is for radially running through the thru-bolt of described engine output shaft.
Preferably, described handle is located at the outer face place of described transfer case housing.
Preferably, the outer face of described transfer case housing is provided with pedestal, and described handle and described pedestal are hinged; One end of described handle is provided with the slotted hole extended along its length, and the outer end of described mandrel is connected with described handle by the bearing pin that inserts described slotted hole, and the axis of described bearing pin is parallel with the hinge axes of described handle, described pedestal.
Preferably, described pedestal is provided with locating plate, described handle has the first inclined-plane and the second inclined-plane that is predetermined angle, when described the first inclined-plane/described the second inclined-plane contacts just with described locating plate, corresponding to described disconnecting device in the first control position/second control position; Described handle can rotate so that described locating plate switches to described the first inclined-plane or described the second inclined-plane contacts around described hinge axes.
Preferably, between the clutch bell of described auxiliary gear box input shaft and driving engine, be provided with bearing, and/or be provided with bearing between described auxiliary gear box input shaft and described engine output shaft.
The present invention also provides a kind of hoisting crane, comprises and gets on the bus and be located at the engine system of getting on the bus, and described engine system is the described engine system of above-mentioned any one.
Because above-mentioned engine system has above-mentioned technique effect, the hoisting crane with this engine system also has identical technique effect.
The accompanying drawing explanation
Fig. 1 is the structural representation that a kind of typical driving engine is connected with auxiliary gear box;
The structure cutaway view that Fig. 2 is a kind of specific embodiment of engine power system provided by the present invention;
The local enlarged diagram that Fig. 3 is A position in Fig. 2;
The schematic diagram that Fig. 4 is transfer case housing in Fig. 2;
The left view that Fig. 5 is Fig. 4;
Fig. 6 arranges the schematic diagram of handle position in Fig. 5;
The local enlarged diagram that Fig. 7 is B position in Fig. 6;
Fig. 8 is the axially movable schematic diagram of handle drives mandrel.
In Fig. 1:
11 clutch bells, 12 transfer case housings, 13 flywheels, 131 output shaft mounting holes, 14 coupler terminal pads, 141 coupler mounting holes
In Fig. 2-8:
21 clutch bells, 22 transfer case housings, 221 pedestals, 221a locating plate, 23 auxiliary gear box input shafts, round engine output shaft, 241 radial direction through hole, 251 mandrels, 251a outer end, 252 thru-bolts, 253 handles, 253a the first inclined-plane, 253b the second inclined-plane, 253c slotted hole, 254 jointed shafts, 255 bearing pins, 26 connect axle sleeve, 27 clutch shaft bearings, 28 second bearings
The specific embodiment
In order to make those skilled in the art understand better technical scheme of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 2-3, the structure cutaway view that Fig. 2 is a kind of specific embodiment of engine power system provided by the present invention; The local enlarged diagram that Fig. 3 is A position in Fig. 2.
Engine power system in this embodiment, comprise the driving device of driving engine and auxiliary gear box.Driving device specifically comprises flywheel (not shown) and engine output shaft 24, and the two is relatively fixing, flywheel and engine output shaft 24 can together with rotate.Auxiliary gear box comprises the auxiliary gear box input shaft 23 that can rotate with driving device, such as, auxiliary gear box input shaft 23 can be driven and be rotated by engine output shaft 24, after auxiliary gear box input shaft 23 rotates, can drive the gear cluster of auxiliary gear box inside to do corresponding the rotation, the principle of work of auxiliary gear box can be understood with reference to prior art.
The engine power system also comprises disconnecting device and control setup, and control setup is controlled disconnecting device in the first control position/second control position, so that disconnecting device connects/disconnect auxiliary gear box input shaft 23 and driving device.Be disconnecting device when the first control position, auxiliary gear box input shaft 23 is connected with driving device by disconnecting device, auxiliary gear box input shaft 23 is synchronizeed and is rotated with driving device; Disconnecting device is when the second control position, and auxiliary gear box input shaft 23 disconnects with driving device, and driving device rotates separately.
So design, when engine starting, can the driving device of driving engine and auxiliary gear box input shaft 23 be disconnected by disconnecting device and control setup, auxiliary gear box and the hydraulic efficiency pressure system that is connected with auxiliary gear box all disconnect with driving engine, thereby the load resistance while thoroughly having eliminated engine starting, only need to overcome self resistance during engine starting, the starter motor of driving engine equal start the engine successfully under any operating mode.
Disconnecting device can have the various structures form, to realize above-mentioned functions, as shown in Figure 2.
This disconnecting device specifically comprises connection axle sleeve 26, connects axle sleeve 26 and is provided with axle sleeve internal tooth and axle sleeve external tooth.Correspondingly, the periphery of engine output shaft 24 is provided with the output shaft external tooth, and auxiliary gear box input shaft 23 has the input shaft internal tooth, and the axle sleeve internal tooth that connects axle sleeve 26 can mesh with the output shaft external tooth, and the axle sleeve external tooth can mesh with the input shaft internal tooth.In figure, connect axle sleeve 26 overcoat engine output shafts 24, and in be placed in auxiliary gear box input shaft 23, to realize corresponding external tooth, internal tooth, mesh simultaneously.
Now, control setup can drive and connect axle sleeve 26 moving axially along engine output shaft 24, so that connect, axle sleeve 26 can with auxiliary gear box input shaft 23 and engine output shaft 24, the two meshes simultaneously, or at least with the two in one break away from, as long as break away from one, engine output shaft 24 and auxiliary gear box input shaft 23 disconnect.
In Fig. 3, the axle sleeve internal tooth and the axle sleeve external tooth that connect axle sleeve 26 mesh with output shaft external tooth, input shaft internal tooth respectively simultaneously, now, disconnecting device is in the first control position, engine output shaft 24 is connected by connecting axle sleeve 26 with auxiliary gear box input shaft 23, and engine output shaft 24 can drive auxiliary gear box input shaft 23 and rotate while rotating; Take Fig. 2 as visual angle, control setup driving connection axle sleeve 26 moves to left after a segment distance, the axle sleeve external tooth that connects axle sleeve 26 can break away from the input shaft internal tooth of auxiliary gear box input shaft 23, connect axle sleeve 26 no longer connecting engine output shaft 24 and auxiliary gear box input shaft 23, the two disconnection, now, disconnecting device is in the second control position, and engine output shaft 24 rotates separately.
In this embodiment, separate while connecting axle sleeve 26 and auxiliary gear box input shaft 23, connect axle sleeve 26 and move axially towards the direction of flywheel.According to concrete type, there is endplay between clutch bell 21 or flywheel and auxiliary gear box input shaft 23, in Fig. 2, between clutch bell 21 and auxiliary gear box input shaft 23, there is endplay.24 of engine output shafts insert auxiliary gear box input shaft 23, towards the axial bore place of flywheel one end, one section input shaft internal tooth is set at auxiliary gear box input shaft 23, when connecting axle sleeve 26 and moving after preset distance to the endplay place between flywheel and auxiliary gear box input shaft 23, connecting axle sleeve 26 can break away from auxiliary gear box input shaft 23.This set-up mode, take full advantage of the gap between auxiliary gear box and flywheel, is convenient to realize connecting moving axially of axle sleeve 26.
Seen from the above description, at least one separates with in engine output shaft 24 and auxiliary gear box input shaft 23 to connect axle sleeve 26, can realize the disconnection of the two.Therefore, in Fig. 2, after connecting the input shaft internal tooth of axle sleeve 26 disengaging auxiliary gear box input shafts 23, can continue engagement with the output shaft external tooth of engine output shaft 24, or also separate.
Be appreciated that, one section input shaft internal tooth is set in auxiliary gear box input shaft 23 axial bore, drive connection axle sleeve 26 to move (moving to right in Fig. 2) along deviating from free wheel direction, until the axle sleeve external tooth breaks away from this section input shaft internal tooth or disengaging output shaft internal tooth is also passable, just connection axle sleeve 26 now is all the time in auxiliary gear box input shaft 23 axial bore, controls and the simple and easy degree of processing technology will be inferior to above-described embodiment.
Disconnecting device adopts the structure that connects axle sleeve 26, and itself and engine output shaft 24 and auxiliary gear box input shaft 23 can be installed by suit, has and installs reliably, assembles simple advantage; And, connect axle sleeve 26 and take the gear engagement with engine output shaft 24, auxiliary gear box input shaft 23, make connection reliability higher, while needing to separate, apply less power and get final product, can not interfere other parts in clutch bell 21 and auxiliary gear box yet.
Particularly, control setup can comprise the locations that inserts engine output shaft 24, the mandrel 251 that axially inserts engine output shaft 24, and drives the axially movable handle 253 of mandrel 251.Mandrel 251 is fixed with connecting axle sleeve 26 by locations, and the locations in Fig. 2 is specially the thru-bolt 252 that radially runs through engine output shaft 24.
Thru-bolt 252 runs through simultaneously and connects axle sleeve 26, engine output shaft 24 and mandrel 251.Connect axle sleeve 26 and be provided with the counterbore coordinated with the bolt of thru-bolt 252, two hook bolts of thru-bolt 252 by its with connect axle sleeve 26 and be completely fixed, the screw rod of thru-bolt 252 runs through mandrel 251, also fixing with mandrel 251, now, thru-bolt 252, connection axle sleeve 26, mandrel 251 threes are relatively-stationary relation.When driving mandrel 251 to move axially along engine output shaft 24, mandrel 251 drives thru-bolt 252, thru-bolt 252 drives and connects axle sleeves 26 and moves vertically, thus realize connecting axle sleeve 26 moving axially in case with engagement and the disengaging of auxiliary gear box input shaft 23.
Seen from the above description, thru-bolt 252 and mandrel 251 need to move along engine output shaft 24, therefore can arrange on engine output shaft 24 for thru-bolt 252 and the axially movable passage of mandrel 251.As shown in Figure 2, the axially extending bore that mandrel 251 inserts is its passage, and the length of this passage need guarantee that mandrel 251 can drive connection axle sleeve 26 and be connected or break away from auxiliary gear box input shaft 23 in stroke; In addition, process the radial direction through hole 241 radially extended on engine output shaft 24, as the axially movable passage of thru-bolt 252.Certainly, thru-bolt 252 is not limited to radially insert, and it is also feasible tilting to insert; In fact, locations also is not limited to run through the thru-bolt 252 of engine output shaft 24, and the locationss such as single ended bolt, locating dowel pin insert can realize connecting the purpose that connects axle sleeve 26 equally.Just, the fixed effect of thru-bolt 252 penetration types is more reliable comparatively speaking.
Mandrel 251 axially is inserted in engine output shaft 24, and moves axially and drive to connect moving axially of axle sleeve 26 with it, is easy to guarantee to connect axle sleeve 26 and moves vertically all the time, is difficult for departing from and stuck.And, when rotating, the setting of mandrel 251 can not cause engine output shaft 24 bias, can keep rotating preferably.In addition, in above-described embodiment, connect axle sleeve 26 between clutch bell 21 and auxiliary gear box, be positioned at enclosure interior, be not easy to directly it be controlled, and mandrel 251 can insert in engine output shaft 24 from outside, and driven by handle 253, make operating personal can drive from outside and connect axle sleeve 26, the operation simplification is improved, and the cost of this kind of control mode is also relatively low.
Can expect, it is also feasible not according to aforesaid way, control setup being set.Such as, directly at clutch bell 21 and auxiliary gear box inside, electrical control gear is set, to drive moving axially of axle sleeve 26 of connection, be also feasible, obviously, the design cost of this kind of mode is relatively high.
Further, for the control setup embodiment of above-mentioned mandrel 251, handle 253, handle 253 specifically can be located at the outer face place of transfer case housing 22.
As shown in Fig. 4-5, the schematic diagram that Fig. 4 is transfer case housing in Fig. 2; The left view that Fig. 5 is Fig. 4.
The main body of mandrel 251 is positioned at auxiliary gear box inside, and to insert engine output shaft 24, an end of mandrel 251 extends to the auxiliary gear box outside, and this end is the outer end 251a of mandrel 251.In the present embodiment, pedestal 221 can be set at the outer face of transfer case housing 22, handle 253 is hinged with pedestal 221, and handle 253 can rotate around the axis of jointed shaft 254 of the two.And an end of handle 253 arranges slotted hole 253c, the outer end 251a of mandrel 251 is connected with handle 253 by the bearing pin 255 that inserts slotted hole 253c, and the axis of bearing pin 255 is parallel with the hinge axes of above-mentioned handle 253, pedestal 221., during turning handle 253, handle 253 meeting drive bearing pins 255 move axially along engine output shaft 24, and then band moving mandrel 251 moves vertically.Slotted hole 253c is set herein, prevents from when handle 253 from rotating bearing pin 255 is applied to diametral load, so that bearing pin 255 can successfully only move vertically.
Like this design handle 253, operating personal only needs turning handle 253 simply, can handle mandrel 251 and move axially, thereby realize the engagement of connection axle sleeve 26 and auxiliary gear box input shaft 23 or separate.
Further, locating plate 221a can be set on pedestal 221, the sidewall of handle 253 has the first inclined-plane 253a and the second inclined-plane 253b that is predetermined angle, and when the first inclined-plane 253a contacts just with locating plate 221a, disconnecting device is in the first control position; When the second inclined-plane 253b contacts just with locating plate 221a, disconnecting device is in the second control position.As shown in the figure, while needing the position of switching handle 253, turning handle 253, in rotation process, external force need to be applied so that locating plate 221a is backed down in the position between the first inclined-plane 253a, the second inclined-plane 253b, until the second inclined-plane 253b contacts with locating plate 221a just, switch to another control position.
Visible, when not applying external force, handle 253 can be positioned the first control position or the second control position, so that mandrel 251 can be stably in required control position, correspondingly, the position that connects axle sleeve 26 is also relatively stable, while guaranteeing engine starting, connect axle sleeve 26 in the second control position, during engine work, in the first control position.And the inclined design of locating plate 221a uniqueness makes handle 253 can feed back to the clear and definite position of the operating personal one switching signal that puts in place in rotation process, alert is controlled and is completed.
For the various embodiments described above, between the clutch bell 21 of auxiliary gear box input shaft 23 and driving engine, bearing can be set, clutch shaft bearing 27 as shown in Figure 2.Now, auxiliary gear box input shaft 23 is floating type with clutch bell 21 and is connected, and bearing on the one hand can support auxiliary gear box input shaft 23, on the other hand, also is conducive to auxiliary gear box input shaft 23 and synchronizes rotation with engine output shaft 24.
In like manner, in Fig. 2, engine output shaft 24 inserts auxiliary gear box input shaft 23, between auxiliary gear box input shaft 23 and engine output shaft 24, also bearing can be set, the second bearing 28 as shown in the figure.Engine output shaft 24 can also be inserted into transfer case housing 22, between the two, also bearing can be set, as shown in Figure 2.Bearing herein equally also plays support, reduces the effect of pivoting friction.
It should be noted that, disconnecting device is not limited to above-mentioned connection axle sleeve 26 embodiment.Such as, one insert-pull pin directly is set, corresponding radially jack is set on engine output shaft 24 and auxiliary gear box input shaft 23, during engine starting, extract insert-pull pin by control setup (can be that machinery is manual or automatically controlled), engine output shaft 24 separates with auxiliary gear box input shaft 23; During engine work, can drive insert-pull pin to insert the radially jack of said two devices, synchronously rotate to realize connecting.
Further be appreciated that in above-mentioned specific embodiment, be connected or separate describing mainly for auxiliary gear box input shaft 23 with engine output shaft 24.In fact, the driving device of driving engine comprises flywheel and engine output shaft 24, can expect, auxiliary gear box input shaft 23 is connected or separates with flywheel by disconnecting device is also feasible, the concrete setting of disconnecting device can be understood with reference to the various embodiments described above, repeats no more herein.
Except above-mentioned engine power system, the present invention also provides a kind of hoisting crane, comprises and gets on the bus and be located at the engine system of getting on the bus, and described engine system is the described engine system of above-mentioned arbitrary embodiment.Because above-mentioned engine system has above-mentioned technique effect, the hoisting crane with this engine system also has identical technique effect.
Above a kind of hoisting crane provided by the present invention and engine power system thereof all are described in detail.Applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (10)
1. an engine power system, comprise the driving device of driving engine and auxiliary gear box; Described driving device comprises flywheel, the engine output shaft (24) fixed, and described auxiliary gear box comprises the auxiliary gear box input shaft (23) that can rotate with described driving device; It is characterized in that, the engine power system also comprises disconnecting device and control setup, described control setup is controlled described disconnecting device in the first/the second control position, so that described disconnecting device connects/disconnect described auxiliary gear box input shaft (23) and described driving device.
2. engine power system as claimed in claim 1, is characterized in that, the periphery of described engine output shaft (24) is provided with the output shaft external tooth, and described auxiliary gear box input shaft (23) has the input shaft internal tooth; Described disconnecting device comprises and connects axle sleeve (26), and described connection axle sleeve (26) has can be respectively and axle sleeve internal tooth, the axle sleeve external tooth of described output shaft external tooth, the engagement of described input shaft internal tooth;
Described control setup drives described connection axle sleeve (26) moving axially along described engine output shaft (24), so that described connection axle sleeve (26) can with described auxiliary gear box input shaft (23) and described engine output shaft (24), the two meshes simultaneously, or at least with the two in one break away from.
3. engine power system as claimed in claim 2, it is characterized in that, there is endplay between the clutch bell of described flywheel or driving engine (21) and described auxiliary gear box input shaft (23), described engine output shaft (24) inserts described auxiliary gear box input shaft (23), described connection axle sleeve (26) moves axially preset distance towards described flywheel, and the input shaft internal tooth of the axle sleeve external tooth of described connection axle sleeve (26) and described auxiliary gear box input shaft (23) breaks away from.
4. engine power system as claimed in claim 2, it is characterized in that, described control setup comprises the locations that inserts described engine output shaft (24), axially inserts the mandrel (251) of described engine output shaft (24), and drives the axially movable handle of described mandrel (251) (253); Described mandrel (251) is fixed with the described axle sleeve (26) that connects by described locations; Described engine output shaft (24) is provided with for described locations and the axially movable passage of described mandrel (251).
5. engine power system as claimed in claim 4, is characterized in that, described locations is for radially running through the thru-bolt (252) of described engine output shaft (24).
6. engine power system as claimed in claim 4, is characterized in that, described handle (253) is located at the outer face place of described transfer case housing (22).
7. engine power system as claimed in claim 6, is characterized in that, the outer face of described transfer case housing (22) is provided with pedestal (221), and described handle (253) is hinged with described pedestal (221); One end of described handle (253) is provided with the slotted hole (253c) extended along its length, the outer end (251a) of described mandrel (251) is connected with described handle (253) by the bearing pin (255) that inserts described slotted hole (253c), and the axis of described bearing pin (255) is parallel with the hinge axes of described handle (253), described pedestal (221).
8. engine power system as claimed in claim 7, it is characterized in that, described pedestal (221) is provided with locating plate (221a), described handle (253) has the first inclined-plane (253a) and the second inclined-plane (253b) that is predetermined angle, described the first inclined-plane (253a)/described the second inclined-plane (253b) is with described locating plate (221a) while just contacting, corresponding to described disconnecting device in the first control position/second control position; Described handle (253) can rotate so that described locating plate (221a) switches to described the first inclined-plane (253a) or described the second inclined-plane (253b) contacts around described hinge axes.
9. engine power system as described as claim 1-8 any one, it is characterized in that, be provided with bearing between the clutch bell (21) of described auxiliary gear box input shaft (23) and driving engine, and/or be provided with bearing between described auxiliary gear box input shaft (23) and described engine output shaft (24).
10. a hoisting crane, comprise and get on the bus and be located at the engine system of getting on the bus, and it is characterized in that, described engine system is the described engine system of claim 1-9 any one.
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| CN201310496385.0A CN103496322B (en) | 2013-10-21 | 2013-10-21 | Crane and engine power system thereof |
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| CN201310496385.0A CN103496322B (en) | 2013-10-21 | 2013-10-21 | Crane and engine power system thereof |
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| CN202088884U (en) * | 2011-06-20 | 2011-12-28 | 三一汽车起重机械有限公司 | Crane power device and crane |
| CN102602285A (en) * | 2012-04-05 | 2012-07-25 | 三一汽车起重机械有限公司 | Engineering machine and starting method for engine thereof |
| CN202946582U (en) * | 2012-10-30 | 2013-05-22 | 陕西中大机械集团有限责任公司 | Clutch device of paver power box and engine |
| CN203623382U (en) * | 2013-10-21 | 2014-06-04 | 徐州重型机械有限公司 | Crane and engine power system thereof |
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|---|---|
| CN103496322B (en) | 2017-02-08 |
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