CN103395367A - Oil pump device for automobile crane - Google Patents
Oil pump device for automobile crane Download PDFInfo
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- CN103395367A CN103395367A CN2013103605177A CN201310360517A CN103395367A CN 103395367 A CN103395367 A CN 103395367A CN 2013103605177 A CN2013103605177 A CN 2013103605177A CN 201310360517 A CN201310360517 A CN 201310360517A CN 103395367 A CN103395367 A CN 103395367A
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- oil pump
- riser
- pump device
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Abstract
The invention relates to an oil pump device for an automobile crane. The oil pump device comprises an oil pump, wherein the power input end of the oil pump is connected with a transmission shaft via a first adapting plate, and the other end of the transmission shaft is connected with a power take-off device via a second adapting plate; the oil pump is arranged on an oil pump support; the oil pump support is arranged on an automobile frame via an auxiliary support, and the oil pump support is an L-shaped bend board; a shaft hole is formed in one sideboard of the oil pump support; the power output end of the oil pump penetrates through the shaft hole and then is connected with the first adapting plate, and another sideboard of the oil pump support is used for being fixedly connected with the auxiliary support; both the two sideboards of the oil pump support are vertical to the ground; the auxiliary support comprises a box-type structure fixedly arranged on the automobile frame; a connecting board is fixedly connected with the sideboards of the oil pump support. The oil pump device for the automobile crane is shortened in the cantilever length of the oil pump support, improves the working stability of the oil pump device under the alternate load action, and eliminates a potential safety hazard of unbalancing of the transmission shaft.
Description
Technical field
The present invention relates to engineering machinery field, relate in particular to a kind of car hosit oil pump device.
Background technology
Oil pump device refers to get power by oil pump from the power takeoff of driving engine or change speed gear box, and then by the device of oil pump to transmission hydraulic powers such as the steering hydraulic force aid system of car hosit, independent hydraulically controlled cooling systems.Oil pump has three kinds from the common mode of power takeoff power taking: propeller shaft couplings, coupling band connect, the power takeoff direct connection.
The relationship between quality of oil pump device is to the quality of car hosit,, in case arranging of oil pump device is unreasonable, just there will be following phenomenon of the failure: the leakage of oil of pump shaft head, pump shaft head rupture, transmission shaft self are thrown off, transmission shaft and the spline that is connected with the pump castellated shaft connect dish from the disengaging of pump castellated shaft, connect to coil and come off from power takeoff etc.After in oil pump device, a certain parts break down, also likely bring the damage of adjacent zeros parts such as change speed gear box, increased to a certain extent service expenditure and changed the part expense.
As shown in Figure 1 and Figure 2, oil pump device 1 ' is arranged on the rear of driving engine 3 ', and departs from the axis of vehicle frame 2 '.Oil pump device 1 ' is fixedly connected with auxiliary stand by oil pump bracket, and auxiliary stand is welded on vehicle frame 2 '.Due to the restriction that is subjected to the dynamic assembly space allowable that is formed by driving engine 3 ' and change speed gear box, the mode that oil pump device 1 ' is connected with power takeoff employing transmission shaft on driving engine 3 '.
As shown in Fig. 3 A, Fig. 3 B, Fig. 3 C, oil pump device 1 ' comprises oil pump 11 ', and the power intake of oil pump 11 ' connects dish 12 ' connection for transmission axle 13 ' by first, and the other end of transmission shaft 13 ' connects dish 14 ' by second and connects power takeoff 15 '.power takeoff 15 ' is arranged on driving engine 3 ', oil pump 11 ' is fixedly installed on oil pump bracket 16 ', one end of oil pump bracket 16 ' is fixedly connected with oil pump 11 ', the other end oliquely downward tilts, be the slightly long-armed shape of bending, its bottom is fixed on auxiliary stand 17 ', auxiliary stand 17 ' is fixedly installed on vehicle frame 2 ', the oblique below that a little is positioned at oil pump 11 ' that is connected and fixed of oil pump bracket 16 ' and auxiliary stand 17 ', the cantilever of oil pump bracket 16 ' is long too high, oil pump device 1 ' transmits at driving engine 3 ' the reverse load of coming, under the effect of the impact loads such as oil pump 11 ' self, be easy to unstability, can cause that simultaneously overbalance appears in transmission shaft 13 ', produce centnifugal force, bolt connects fastening point and loosening phenomenon occurs, bring the leakage of oil of pump shaft head, the pump shaft head is short, transmission shaft such as throws off voluntarily at the phenomenon of the failure.
Summary of the invention
The objective of the invention is to propose a kind of car hosit oil pump device, its load-carrying capacity is strong, stability is high.
for achieving the above object, the invention provides a kind of car hosit oil pump device, comprise oil pump, the power intake of described oil pump connects dish connection for transmission axle by first, the other end of described transmission shaft connects dish by second and connects power takeoff, described oil pump is arranged on oil pump bracket, described oil pump bracket is arranged on vehicle frame by auxiliary stand, it is characterized in that: described oil pump bracket is one " L " shape bent plate, be provided with axis hole on one of them side plate of described oil pump bracket, the clutch end of described oil pump pass described axis hole and described first connect the dish be connected, another side plate of described oil pump bracket is used for being fixedly connected with described auxiliary stand, two described side plates of described oil pump bracket are all perpendicular to the ground, described auxiliary stand comprises the box-structure that is fixedly installed on described vehicle frame, and described box-structure top is fixedly installed connecting panel, and described connecting panel is fixedly connected with the side plate of described oil pump bracket.Technique scheme has been improved the oil pump bracket of oil pump device and the planform of auxiliary stand in the prior art,, in the situation that the space anxiety has solved the long problem of oil pump device cantilever, has improved load-carrying capacity and the stability of oil pump device.
Further, the described box-structure of described auxiliary stand comprises symmetrically arranged the first riser and the second riser, is fixedly installed the 3rd riser and the 4th riser between described the first riser and described the second riser, forms box-structure.In technique scheme, the box-structure that the first riser, the second riser, the 3rd riser and the 4th riser form has higher cross sectional moment of inertia and carrying stabilizing power, has improved the right alignment of power takeoff and oil pump, has eliminated the unbalanced potential safety hazard of transmission shaft.
Further, described the first riser and described the second riser include upper plate and the lower plate that is wholely set, and described upper plate is trapezium structure wide at the top and narrow at the bottom, and described lower plate is square plate, and its width is less than the minimum width of described upper plate; Be provided with one " U " shape draw-in groove between described upper plate and described lower plate, described auxiliary stand is fastened on described vehicle frame by described " U " shape draw-in groove, and with described Frame Welding.Technique scheme has been improved the connection mode of auxiliary stand and vehicle frame, can be gently from oil pump device, be delivered to load on vehicle frame, improves the carrying stabilizing power of auxiliary stand; And the first riser and the second riser are from the weld with vehicle frame, extend to the junction with connection bracket, and width broadens gradually, therefore, top and the connection bracket that can guarantee the box-structure that the first riser, the second riser, the 3rd riser and the 4th riser form have larger area of contact, more firm with being connected of connection bracket, simultaneously in the situation that the space anxiety, also make connection bracket as far as possible near oil pump bracket, shorten the jib-length of oil pump bracket, improved intensity, rigidity and the stability of car hosit with oil pump device.
Further, be provided with a manhole on the described upper plate of the described upper plate of described the first riser and described the second riser.
Further, the described connecting panel of described auxiliary stand is " L " shape bent plate, and one of them side plate of described connecting panel is fixedly installed on the top of described box-structure, and another side plate of described connecting panel is fixedly connected with the side plate of described oil pump bracket.
Further, the midway location of the bending place of described connecting panel is provided with a gusset.Technique scheme has improved the strength and stability of auxiliary stand.
Further, a side of the bending place of described connecting panel is provided with another gusset.Technique scheme has improved the strength and stability of auxiliary stand.
Further, the side plate of the side plate of described connecting panel and described oil pump bracket is bolted to connection.
Further, the bending place of described oil pump bracket is provided with gusset.Technique scheme has improved the strength and stability of oil pump bracket.
Further, the bending place of the bending place of described oil pump bracket, described connecting panel all adopts arc transition to connect.
Based on technique scheme, the present invention is on intensity, rigidity, stability, the oil pump bracket of oil pump device and the planform of auxiliary stand in the prior art have been improved, improved the connection mode of auxiliary stand and vehicle frame, shortened the jib-length of oil pump bracket, improved the working stability of oil pump device under the reverse load effect, eliminated the unbalanced potential safety hazard of transmission shaft, improve the right alignment of power takeoff and oil pump, solved the problem that in the prior art, the power taking position is too high, the oil pump device cantilever is long.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not form improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is a kind of arrangement form schematic diagram of oil pump device on the automobile crane locomotive frame in prior art;
Fig. 2 is oil pump device shown in Figure 1 is arranged on the automobile crane locomotive frame local enlarged diagram;
Fig. 3 A is that the master of the oil pump device shown in Fig. 2 looks schematic diagram;
Fig. 3 B is that schematic diagram is looked on the left side of the oil pump device shown in Fig. 2;
Fig. 3 C is the schematic top plan view of the oil pump device shown in Fig. 2;
Fig. 4 is the embodiment schematic diagram of car hosit provided by the invention with the arrangement form of oil pump device on vehicle frame;
Fig. 5 A is that the car hosit shown in Fig. 4 is looked schematic diagram with the master of oil pump device;
Fig. 5 B is that the car hosit shown in Fig. 4 is looked schematic diagram with the left side of oil pump device;
Fig. 5 C is the schematic top plan view of the car hosit shown in Fig. 4 with oil pump device;
Fig. 6 is an example structure schematic diagram of oil pump bracket provided by the invention;
Fig. 7 is an example structure schematic diagram of auxiliary stand provided by the invention;
Fig. 8 A is that the auxiliary stand shown in Fig. 7 is welded on one of them the angle schematic diagram on vehicle frame;
Fig. 8 B is that the auxiliary stand shown in Fig. 7 is welded on another angle schematic diagram on vehicle frame.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment that obtains, belong to the scope of protection of the invention.
As shown in Figure 4, car hosit provided by the invention is arranged on vehicle frame 2 with oil pump device 1, and by the driving engine 3 that is arranged on vehicle frame 2, provides power.
As shown in Fig. 5 A, 5B, 5C, car hosit provided by the invention comprises oil pump 11 with oil pump device 1, and the power intake of oil pump 11 connects dish 12 connection for transmission axles 13 by first, and the other end of transmission shaft 13 connects dish 14 by second and connects power takeoff 15.Wherein, power takeoff 15 is arranged on driving engine 3, and oil pump 11 is fixedly installed on oil pump bracket 16, and oil pump bracket 16 is fixedly installed on vehicle frame 2 by auxiliary stand 17.
In above-described embodiment, between oil pump bracket 16 and auxiliary stand 17, between oil pump 11 and oil pump bracket 16, first connect between dish 12 and transmission shaft 13, transmission shaft 13 and second connect and coil 14 between, second connect coil 14 and power takeoff 15 between all be bolted; First connects between dish 12 and the power intake of oil pump 11 and passes through spline joint.
As shown in Figure 6, oil pump bracket 16 provided by the invention is one " L " shape bent plate, it comprises the first oil pump bracket side plate 161 and the second oil pump bracket side plate 162 that is wholely set, adopt arc transition to be connected between the first oil pump bracket side plate 161 and the second oil pump bracket side plate 162, the arc transition junction of the first oil pump bracket side plate 161 and the second oil pump bracket side plate 162 is provided with oil pump bracket gusset 163.The first oil pump bracket side plate 161 and the second oil pump bracket side plate 162 arrange under state all perpendicular to the ground.Be provided with an axis hole 164 on the first oil pump bracket side plate 161, the power intake of oil pump 11 can pass axis hole 164 and first and connect dish and 12 be connected.Be provided with some bolts hole 165 on the second oil pump bracket side plate 162.By bolt hole 165, the bolt that is connected with auxiliary stand 17 can be set.
In above-described embodiment, the first oil pump bracket side plate 161 and the second oil pump bracket side plate 162 of oil pump bracket 16 are all perpendicular to the ground, oil pump bracket 16 is used for carrying oil pump 11, distance between axis hole 164 to the second oil pump bracket side plates 162 that arrange on the first oil pump bracket side plate 161 and the connection location of auxiliary stand 17 can be short as far as possible, as long as can hold lower oil pump 11, therefore, shorten the cantilever of oil pump bracket 16 with respect to prior art, improved intensity, rigidity and the stability of car hosit with oil pump device 1.
As shown in Figure 7, auxiliary stand 17 provided by the invention comprises symmetrically arranged the first riser 171 and the second riser 172, the 3rd riser 173 and the 4th riser 174 are set between the first riser 171 and the second riser 172, the box-structure that the first riser 171, the second riser 172, the 3rd riser 173 and the 4th riser 174 form a whole, the top of this box-structure is fixedly installed (for example can adopt welding) a connection bracket 175, and connection bracket 175 is bolted oil pump bracket 16.
As shown in Figure 7, the structure of the first riser 171 and the second riser 172 is basic identical, the Parallel Symmetric setting, include the upper plate and the lower plate that are wholely set, upper plate is trapezium structure wide at the top and narrow at the bottom, is provided with a manhole on upper plate, is convenient to other parts and passes from manhole.Lower plate is square plate, and its width is less than the minimum width of upper plate.Be provided with one " U " shape draw-in groove 176 between upper plate and lower plate.
in above-described embodiment, " U " shape draw-in groove 176 on the first riser 171 and the second riser 172 is used for being fastened on vehicle frame 2, and with vehicle frame 2, weld, the upper plate of the first riser 171 and the second riser 172 is trapezium structure wide at the top and narrow at the bottom, namely the first riser 171 and the second riser 172 are from the weld with vehicle frame 2, extend to the junction with connection bracket 175, and width broadens gradually, therefore, can guarantee the first riser 171, the second riser 172, top and the connection bracket 175 of the box-structure that the 3rd riser 173 and the 4th riser 174 form have larger area of contact, more firm with being connected of connection bracket 175, simultaneously in the situation that the space anxiety, also make connection bracket 175 as far as possible near oil pump bracket 16, shortened the jib-length of oil pump bracket 16, improved the intensity of car hosit with oil pump device 1, rigidity and stability.
As shown in Figure 7, connection bracket 175 is one " L " shape bent plate, it comprises the first connection bracket side plate 177 and the second connection bracket side plate 178 that is wholely set, adopt arc transition to be connected between the first connection bracket side plate 177 and the second connection bracket side plate 178, one side of this arc transition junction is welded with the first gusset 179, the first gussets 179 and the first connection bracket side plate 177 and is connected connection bracket side plate 178 and is connected; The midway location of the arc transition junction of the first connection bracket side plate 177 and the second connection bracket side plate 178 is welded with the second gusset 180, the second gussets 180 and the first connection bracket side plate 177 and is connected connection bracket side plate 178 and is connected.The first gusset 179 and the second gusset 180 are triangle.The first connection bracket side plate 177 is arranged on the top of the box-structure of the first riser 171, the second riser 172, the 3rd riser 173 and the 4th riser 174 compositions, be provided with some bolts hole 181 on the second connection bracket side plate 178, by bolt hole 181, the bolt that is connected with the second oil pump bracket side plate 162 of oil pump bracket 16 can be set.
In above-described embodiment, the 3rd riser 173 and the 4th riser 174 are set between the first riser 171 and the second riser 172, the 3rd riser 173 and the 4th riser 174 transition transmission shaft 13 and oil pump 11 gently are delivered to the load of auxiliary stand 17, improve the rigidity of auxiliary stand 17.
In above-described embodiment, the box-structure that the first riser 171, the second riser 172, the 3rd riser 173 and the 4th riser 174 form a whole, the size of box-structure is large, compare with auxiliary stand of the prior art 17 ' shown in Figure 2, have larger moment of inertia of cross-section and bearing stability, improve the right alignment of power takeoff 15 with oil pump 11, eliminated the unbalanced potential safety hazard of transmission, reduced the appearance that stress is concentrated situation.
In above-described embodiment, the first gusset 179 and the second gusset 180 all are arranged on the arc transition junction of connection bracket 175, and setting position is different, has not only improved the strength and stiffness of auxiliary stand 17, and has been convenient to remove and install bolt.
As shown in Fig. 8 A, 8B, auxiliary stand 17 is fastened on vehicle frame 2 by the upper plate of the first riser 171 and the second riser 172 and " U " shape draw-in groove 176 between lower plate, and with vehicle frame 2, welds.Auxiliary stand 17 adopts welding manner with the lap-joint of vehicle frame 2, can be gently from oil pump device 1, be delivered to load on vehicle frame 2, the carrying stabilizing power of raising auxiliary stand 17.
As Fig. 4-shown in Figure 8, car hosit of the present invention with the set-up mode of oil pump device 1 is: auxiliary stand 17 is fastened on vehicle frame 2 by the upper plate of the first riser 171 and the second riser 172 and " U " shape draw-in groove 176 between lower plate, and with vehicle frame 2 welding.The connection bracket 175 of auxiliary stand 17 is arranged on the top of the box-structure of the first riser 171, the second riser 172, the 3rd riser 173 and the 4th riser 174 compositions, and the first connection bracket side plate 177 is connected with box-structure; The second connection bracket side plate 178 aligns with the second oil pump bracket side plate 162 of oil pump bracket 16, and by some bolts, with the second oil pump bracket side plate 162, be connected, the clutch end of oil pump 11 passes axis hole 164 and first on the first oil pump bracket side plate 161 and connects dish 12 and be connected, and connect and coil 12 connection for transmission axles 13 by first, the other end of transmission shaft 13 connects dish 14 by second and connects power takeoffs 15.
In above-described embodiment, the bending angle of oil pump bracket 16 and auxiliary stand 17 can be in 90 degree left and right.
Car hosit provided by the invention has improved the oil pump bracket of oil pump device and the planform of auxiliary stand the prior art from intensity, rigidity, three aspects of stability with oil pump device 1, improved the carrying stabilizing power of oil pump device.
Should be noted that finally: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (10)
1. car hosit oil pump device, comprise oil pump, the power intake of described oil pump connects dish connection for transmission axle by first, the other end of described transmission shaft connects dish by second and connects power takeoff, described oil pump is arranged on oil pump bracket, described oil pump bracket is arranged on vehicle frame by auxiliary stand, it is characterized in that: described oil pump bracket is one " L " shape bent plate, be provided with axis hole on one of them side plate of described oil pump bracket, the clutch end of described oil pump pass described axis hole and described first connect the dish be connected, another side plate of described oil pump bracket is used for being fixedly connected with described auxiliary stand, two described side plates of described oil pump bracket are all perpendicular to the ground, described auxiliary stand comprises the box-structure that is fixedly installed on described vehicle frame, and described box-structure top is fixedly installed connecting panel, and described connecting panel is fixedly connected with the side plate of described oil pump bracket.
2. car hosit oil pump device as claimed in claim 1, it is characterized in that: the described box-structure of described auxiliary stand comprises symmetrically arranged the first riser and the second riser, be fixedly installed the 3rd riser and the 4th riser between described the first riser and described the second riser, form box-structure.
3. car hosit oil pump device as claimed in claim 2, it is characterized in that: described the first riser and described the second riser include upper plate and the lower plate that is wholely set, and described upper plate is trapezium structure wide at the top and narrow at the bottom, and described lower plate is square plate; Be provided with one " U " shape draw-in groove between described upper plate and described lower plate, described auxiliary stand is fastened on described vehicle frame by described " U " shape draw-in groove, and with described Frame Welding.
4. car hosit oil pump device as claimed in claim 3, is characterized in that: be provided with a manhole on the described upper plate of described the first riser and the described upper plate of described the second riser.
5. car hosit oil pump device as claimed in claim 1, it is characterized in that: the described connecting panel of described auxiliary stand is " L " shape bent plate, one of them side plate of described connecting panel is fixedly installed on the top of described box-structure, and another side plate of described connecting panel is fixedly connected with the side plate of described oil pump bracket.
6. car hosit oil pump device as claimed in claim 5, it is characterized in that: the midway location of the bending place of described connecting panel is provided with a gusset.
7. car hosit oil pump device as claimed in claim 5, it is characterized in that: a side of the bending place of described connecting panel is provided with another gusset.
8. car hosit oil pump device as claimed in claim 5, it is characterized in that: the side plate of described connecting panel and the side plate of described oil pump bracket are bolted to connection.
9. car hosit oil pump device as claimed in claim 1, it is characterized in that: the bending place of described oil pump bracket is provided with gusset.
10. car hosit oil pump device as described in claim 5-9 any one is characterized in that: the bending place of described oil pump bracket, the bending place of described connecting panel all adopt arc transition to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310360517.7A CN103395367B (en) | 2013-08-19 | 2013-08-19 | A kind of oil pump device for automobile crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310360517.7A CN103395367B (en) | 2013-08-19 | 2013-08-19 | A kind of oil pump device for automobile crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103395367A true CN103395367A (en) | 2013-11-20 |
| CN103395367B CN103395367B (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310360517.7A Active CN103395367B (en) | 2013-08-19 | 2013-08-19 | A kind of oil pump device for automobile crane |
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| Country | Link |
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| CN (1) | CN103395367B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020011375A1 (en) * | 2000-07-25 | 2002-01-31 | Kubota Corporation | Working vehicle with a PTO apparatus |
| CN201100230Y (en) * | 2007-08-30 | 2008-08-13 | 中国国际海运集装箱(集团)股份有限公司 | Adjustable oil pump bracket assembly |
| CN201931993U (en) * | 2010-12-28 | 2011-08-17 | 徐州重型机械有限公司 | Crane and mechanism drive device |
| CN202164061U (en) * | 2011-05-23 | 2012-03-14 | 安徽星马汽车股份有限公司 | Adjustable installing and fixing device for oil pump of crane |
| CN202965959U (en) * | 2012-11-19 | 2013-06-05 | 马鞍山福马汽车零部件有限公司 | Bracket of gear pump of dump truck |
| CN203067265U (en) * | 2013-03-04 | 2013-07-17 | 中联重科股份有限公司 | Automobile crane and oil pump transmission device thereof |
| CN203427619U (en) * | 2013-08-19 | 2014-02-12 | 徐州重型机械有限公司 | Oil pump device for crane truck |
-
2013
- 2013-08-19 CN CN201310360517.7A patent/CN103395367B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020011375A1 (en) * | 2000-07-25 | 2002-01-31 | Kubota Corporation | Working vehicle with a PTO apparatus |
| CN201100230Y (en) * | 2007-08-30 | 2008-08-13 | 中国国际海运集装箱(集团)股份有限公司 | Adjustable oil pump bracket assembly |
| CN201931993U (en) * | 2010-12-28 | 2011-08-17 | 徐州重型机械有限公司 | Crane and mechanism drive device |
| CN202164061U (en) * | 2011-05-23 | 2012-03-14 | 安徽星马汽车股份有限公司 | Adjustable installing and fixing device for oil pump of crane |
| CN202965959U (en) * | 2012-11-19 | 2013-06-05 | 马鞍山福马汽车零部件有限公司 | Bracket of gear pump of dump truck |
| CN203067265U (en) * | 2013-03-04 | 2013-07-17 | 中联重科股份有限公司 | Automobile crane and oil pump transmission device thereof |
| CN203427619U (en) * | 2013-08-19 | 2014-02-12 | 徐州重型机械有限公司 | Oil pump device for crane truck |
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| Publication number | Publication date |
|---|---|
| CN103395367B (en) | 2015-11-25 |
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Address after: 221001 Jiangsu city of Xuzhou Province Economic and Technological Development Zone of High Road No. 68 Patentee after: Xuzhou Heavy Machinery Co., Ltd. Address before: 221004 Xuzhou, Zhejiang Province, Jiangsu Road No. 165 Patentee before: Xuzhou Heavy Machinery Co., Ltd. |
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