CN204038998U - A kind of engineering truck and leveling turntable device thereof - Google Patents
A kind of engineering truck and leveling turntable device thereof Download PDFInfo
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- CN204038998U CN204038998U CN201420445836.8U CN201420445836U CN204038998U CN 204038998 U CN204038998 U CN 204038998U CN 201420445836 U CN201420445836 U CN 201420445836U CN 204038998 U CN204038998 U CN 204038998U
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- hydraulic ram
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- leveling
- expansion link
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- 239000003921 oil Substances 0.000 description 4
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- 241000375392 Tana Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model discloses a kind of leveling turntable device of engineering truck, between being arranged at pivoting support assembly and getting off, comprise hydraulic ram and support component, described support component is fixed on described vehicle, and can rotate relative to described pivoting support assembly, described hydraulic ram is at least two; Get off described in the cylinder body of each described hydraulic ram is articulated with, and there is the hinge axes of equidirectional; The expansion link of each described hydraulic ram is rotationally connected with described pivoting support assembly, and all can rotate around the direction being parallel to described hinge axes; Described expansion link can be positioned desired location by relatively described cylinder body.In leveling process, the hydraulic ram of support component both sides can work simultaneously, and the side of pivoting support has a down dip, and the expansion link corresponding with this side stretches out, and the expansion link of the hydraulic ram of opposite side is retracted.Hydraulic ram is mutually servo-actuated, does not interfere with each other, and saves the time of artificial handling, improves the efficiency of leveling turntable.The utility model discloses a kind of engineering truck.
Description
Technical field
The utility model relates to engineering truck technical field, particularly a kind of engineering truck and leveling turntable device thereof.
Background technology
Engineering truck refers to and comprises aerial ladder truck, excavating machine etc. by the comprehensive mechanization special-use vehicle that various building engineering or fire-fighting and rescue need.
Please refer to Fig. 1, Fig. 1 is a kind of structural representation of fire fighting turnable ladder.
As shown in Figure 1, getting on the bus of fire fighting turnable ladder 100 is installed on pivoting support 400 by turntable 300, and pivoting support 400, to get off 200 for brace foundation, drives turntable 300 to rotate, and drives further to get on the bus and 100 do gyroscopic movement.Turntable 300 level is installed on pivoting support 400, if 200 vehicle frames of getting off are uneven, then pivoting support 400 is uneven, and turntable 300 is also uneven, and so, 100 structures of getting on the bus may produce larger tilting moment in the course of the work, jeopardize safety.
Please refer to Fig. 2, Fig. 2 is a kind of structural representation of typical leveling vehicle device.
Be described for the tilt condition in Fig. 2, supporting leg supports 200 vehicle frames of getting off, if when the pavement-height of the first supporting leg 501 correspondence is higher than the second supporting leg 502, now, shorten the first supporting leg 501, relative second supporting leg 502 of the first supporting leg 501 is made to have height h, and the horizontal throw L of reference the first supporting leg 501 and the second supporting leg 502, the leaning angle of a angle can be obtained, to make up the angular deviation because Uneven road brings, and make 200 framves maintenance horizontality, the wherein tana=h/L that get off.
But consider the stability of strutting system to vehicle frame, the spacing L of supporting leg is general larger, now, to obtain certain angle of inclination a, so the diff-H h of two supporting legs is also comparatively large, so, the hydraulic ram 600 controlling landing leg stretching should have larger row journey, but due to the restriction of vehicle chassis height, the formation of supporting leg can not be very large, also namely when the inclination angle on the road surface that works is larger, cannot leveling turntable 300.
Please refer to Fig. 3, Fig. 3 is a kind of structural representation of typical leveling turntable device.
For avoiding the drawback of above-mentioned leveling vehicle device, in prior art, also there is a kind of leveling turntable device.
As shown in Figure 3, this leveling turntable device is arranged at pivoting support 400 and gets off between 200, comprises column 700, hydraulic ram 600 and screw fastening locking mechanism 800.Column 700 one end with get off 200 fix, the other end has the first spherical head, and is rotationally connected with the first Baltimore groove that pivoting support 400 lower surface is offered; Hydraulic ram 600 one end with get off 200 hinged, the other end has the second spherical head, and is rotationally connected with the second Baltimore groove that pivoting support 400 lower surface is offered.Screw fastening locking mechanism 800 comprises outer sleeve and inward turning screw rod 802, outer sleeve comprises first outer sleeve 8011 and second outer sleeve 8012 at overcoat inward turning screw rod 802 two ends, first outer sleeve 8011 with get off 200 hinged, the second outer sleeve 8012 is removably installed in pivoting support 400 lower surface by latch 803.
Take Fig. 3 as visual angle, to need lifting on the left of turntable 300, and right side needs to have a down dip, leveling is that example is described:
During the work of this leveling turntable device, first latch 803 is extracted, remove the supporting role of screw fastening locking mechanism 800 pairs of pivoting supports 400; Afterwards, stretch out hydraulic ram 600, lifting on the left of turntable 300, right side has a down dip owing to being no longer subject to the support of screw fastening locking mechanism 800; After obtaining predetermined angle of inclination, manually screw outer sleeve and inward turning screw rod 802, make the first outer sleeve 8011 and the second outer sleeve 8012 adjacent to each other, and shorten the length of screw thread locking mechanism; Finally by latch 803, second outer sleeve 8012 is plugged in pivoting support 400 to fix.
Visible, whole leveling turntable device relies on screw fastening locking mechanism 800 locking, and hydraulic ram 600 self not locking measure, so, in different leveling scheme, screw fastening locking mechanism 800, by under tension or pressure effect, is unfavorable for the carrying of equiblibrium mass distribution leveling turntable device.
More importantly, this leveling turntable device needs manually to screw the outer sleeve of screw thread locking mechanism and inward turning screw rod 802 and regulates length, after adjustment, also need manually to be installed on pivoting support 400, and auxiliary with special tool, consume manpower and materials, inefficiency.
Therefore, how to provide a kind of leveling turntable device, can quick adjustment turntable level, be those skilled in the art's technical issues that need to address.
Utility model content
The purpose of this utility model is for providing a kind of engineering truck and leveling turntable device thereof.This leveling turntable device can quick adjustment turntable level.
For solving the problems of the technologies described above, the utility model provides a kind of leveling turntable device of engineering truck, between being arranged at pivoting support assembly and getting off, comprise hydraulic ram and support component, described support component is fixed on described vehicle, and can rotate relative to described pivoting support assembly, described hydraulic ram is at least two; Get off described in the cylinder body of each described hydraulic ram is articulated with, and there is the hinge axes of equidirectional; The expansion link of each described hydraulic ram is rotationally connected with described pivoting support assembly, and all can rotate around the direction being parallel to described hinge axes; Described expansion link can be positioned desired location by relatively described cylinder body.
In leveling process, the hydraulic ram of support component both sides can work simultaneously, and the side of pivoting support has a down dip, and the expansion link corresponding with this side stretches out, otherwise the expansion link of the hydraulic ram of opposite side is retracted.Different from screw thread locking mechanism of the prior art, two hydraulic rams can be mutually servo-actuated, do not interfere with each other, and need not dismantle, and saves the time of artificial handling, improve the efficiency of leveling turntable.
Preferably, each described expansion link is articulated with described pivoting support assembly, and the hinge axes of described expansion link and described pivoting support assembly is parallel to described hydraulic ram and described hinge axes of getting off.
Preferably, described hydraulic ram is two, and the center of pivoting support assembly described in described support member supports, two described hydraulic rams are arranged at the both sides of described support component symmetrically.
Preferably, also comprise controller and the control cock of electrical connection, described control cock is connected on the oil circuit control of described hydraulic ram, and described controller controls described control cock and opens and closes, to make described hydraulic ram fore and aft motion or stopping.
Preferably, also comprise the double-shaft tilt angle sensor be electrically connected with described controller, the level inclination of described double-shaft tilt angle sensor sensing turntable, and be passed to described controller; Described controller controls described control cock according to the information of described level inclination and opens or cut out.
Preferably, also comprise the balance cock be electrically connected between described controller and described hydraulic ram, described hydraulic ram can be locked in desired location by described balance cock.
The utility model also provides a kind of engineering truck, comprises leveling turntable device, and between described leveling turntable device is arranged at pivoting support assembly and gets off, described leveling turntable device is the leveling turntable device described in above-mentioned any one.
Owing to having the leveling turntable device in the respective embodiments described above, therefore, this project vehicle also has above-mentioned each beneficial effect.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of fire fighting turnable ladder;
Fig. 2 is a kind of structural representation of typical leveling vehicle device;
Fig. 3 is a kind of structural representation of typical leveling turntable device.
The structural representation of a kind of embodiment of the leveling turntable device that Fig. 4 provides for the utility model;
Fig. 5 is the workflow block diagram of the leveling turntable device in Fig. 1.
Fig. 1-Fig. 3:
Get on the bus 100, get off 200, turntable 300, pivoting support 400, first supporting leg 501, second supporting leg 502, hydraulic ram 600, column 700, screw fastening locking mechanism 800, first outer sleeve 8011, second outer sleeve 8012, inward turning screw rod 802, latch 803
Fig. 4-Fig. 5:
Get off 1, pivoting support assembly 2, pivoting support 21, pivoting support adapter plate 22, support component 3, hydraulic ram 4, cylinder body 41, expansion link 42
Detailed description of the invention
In order to make those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 4, the structural representation of a kind of embodiment of the leveling turntable device that Fig. 4 provides for the utility model.
This leveling turntable device is arranged at pivoting support assembly 2 and gets off between 1, pivoting support assembly 2 comprises pivoting support 21 and is arranged on the pivoting support adapter plate 22 of pivoting support 21 lower surface, and this leveling equipment is generally arranged on pivoting support adapter plate 22, and by regulating pivoting support 21 level, and make turntable level.
Leveling turntable device comprises hydraulic ram 4 and support component 3, and support component 3 is rotationally connected with pivoting support adapter plate 22, and relatively get off 1 fix, such as, one end of support component 3 can be fixed on and get off 1, and the other end is rotationally connected with pivoting support 21.As herein describedly be rotationally connected finger, the two can relatively rotate, and the pivot center of this rotation behavior should comprise multiple directions, and therefore, in fact the mode that is rotationally connected comprises articulated manner.
Hydraulic ram 4 should be at least two, and, the cylinder body 41 of hydraulic ram 4 and expansion link 42 are connected to get off 1 and pivoting support adapter plate 22, wherein, cylinder body 41 with get off 1 hinged, and expansion link 42 and pivoting support adapter plate 22 are rotationally connected, and can rotate around the direction being parallel to above-mentioned hinge axes.
The expansion link 42 of hydraulic ram 4 stretches behind desired location, should be able to locking location, this locking positioning function can mechanically, the realization such as electric controling mode or hydraulic control mode.When above-mentioned desired location refers to that leveling turntable is complete, the position of the expansion link 42 of the hydraulic ram 4 below it.
Below the fore-and-aft direction of normal vehicle operation is defined as longitudinal direction, left and right directions is defined as transverse direction, the setting position of hydraulic ram 4 relative support parts 3 should be determined according to direction to be leveled, such as, if pivoting support 21 longitudinally tilts, so, hydraulic ram 4 at least should be arranged on the both sides, front and back of support component 3; If pivoting support 21 transversely tilts, so, hydraulic ram 4 at least should be arranged on the left and right sides of support component 3.
Because hydraulic ram 4 can fore and aft motion within the specific limits, and the pivot center of cylinder body 41 and expansion link 42 relative vehicle (pivoting support 21 or get off 1) is parallel, and namely hydraulic ram 4 can rotate in same plane.Thus, as long as can the relative telescoping movement of hydraulic ram 4 of Reasonable adjustment support component 3 both sides, both can make the pivoting support 21 of support component 3 both sides with get off 1 spacing change on request, so, even if get off, 1 is in tilted road surface, and pivoting support 21 still can be in horizontality.
In leveling process, the hydraulic ram 4 of support component 3 both sides can work simultaneously, and the side of pivoting support 21 has a down dip, and the expansion link 42 corresponding with this side stretches out, otherwise the expansion link 42 of the hydraulic ram 4 of opposite side is retracted.Different from screw thread locking mechanism of the prior art, two hydraulic rams 4 can be mutually servo-actuated, do not interfere with each other, and need not dismantle, and saves the time of artificial handling, improve the efficiency of leveling turntable.
Further, expansion link 42 is hinged with pivoting support adapter plate 22, the two hinge axes be parallel to hydraulic ram 4 with get off 1 hinge axes.So, hydraulic ram 4 only at the rotation with in surface vertical with hinge axes, and can not occur in the rotational variations in other planes, ensures the accuracy along predetermined direction leveling turntable.
Such as, if vehicle longitudinally tilts, above-mentioned each hinge axes transversely arranged, so, in leveling process, hydraulic ram 4 will only can drive pivoting support 21 at the rotation with in surface perpendicular to transverse direction, finally makes pivoting support 21 longitudinally be in horizontality.
Certainly, expansion link 42 also can be rotationally connected with pivoting support 21, such as, be set to that there is ball head structure, and pivoting support adapter plate 22 has suitable groove etc., in this case, because cylinder body 41 and vehicle are hinged, also can suppress the rotational variations of hydraulic ram 4 in other planes above-mentioned to a certain extent, but cylinder body 41 will be subject to the application force of larger suppression rotational variations.In contrast, hydraulic ram 4 and the connection location everywhere of vehicle are all set to hinged by present embodiment, make the distribution of force at its two ends even, are more conducive to protection hydraulic ram 4 structure.
Closer, above-mentioned hydraulic ram 4 can be two, and support component 3 is supported in the center of pivoting support adapter plate 22, and two hydraulic rams 4 are arranged in the both sides of support component 3 symmetrically.
Also hydraulic ram 4 can be provided with in all directions of support component 3, but, consider manufacturing cost, two hydraulic rams 4 are also enough to support pivoting support assembly 2, and, two hydraulic ram 4 relative support parts 3 are symmetrical arranged, and make pivoting support 21 stressed relatively uniform, this embodiment has better economy.
Further, in order to improve the degree of automation of this leveling turntable device, improve leveling efficiency and accuracy, controller and the control cock of electrical connection can also be comprised, control cock is connected on the oil circuit control of hydraulic ram 4, and after energising, controller can control the keying of control cock, thus be hydraulic ram 4 fuel feeding, its expansion link 42 is stretched; Or stop control lever, the expansion link 42 of hydraulic ram 4 stops.
Please refer to Fig. 5, Fig. 5 is the workflow block diagram of the leveling turntable device in Fig. 1.
Can also comprise the double-shaft tilt angle sensor be electrically connected with controller, this double-shaft tilt angle sensor for sensing the level inclination of turntable, and is passed to controller further.When the numerical value at controller determined level inclination angle is zero, represents turntable now level, do not need leveling, then the controlled closedown of control cock, otherwise, when level inclination is non-vanishing, represents that turntable tilts, need leveling again, the controlled unlatching of control cock.
So, the process of leveling turntable forms the electric control circuit of a closed loop, and its degree of automation, intelligence degree significantly improve.
One more preferred embodiment in, this leveling turntable device can also comprise balance cock, balance cock is arranged between controller and hydraulic ram 4, this balance cock should be able to the oil pressure in the rod chamber of regulator solution compressing cylinder 4 and the oil pressure in rodless cavity, make that the two is equal, thus ensure the expansion link 42 of hydraulic ram 4 stress balance and stop motion when moving to desired location.
The leveling process of turntable is a dynamic process, and each moment, its angle of inclination was all different, and therefore, turntable is once arrival level attitude, and hydraulic ram 4 should be able to, promptly by locking, make turntable stably remain on this position.
Traditional is fit structures by arranging travel switch and baffle plate to the locate mode of hydraulic ram 4, and which version is heavy, and precision is lower, and is not suitable for leveling turntable device herein; This embodiment adopts balance cock, and it is quick on the draw, and control accuracy is higher, can rapidly, positioning hydraulic oil cylinder 4 exactly, ensure leveling precision.
The utility model also provides a kind of engineering truck, and it is leveling turntable device in the respective embodiments described above that this project vehicle comprises leveling turntable device, and is arranged at and gets off between 1 and pivoting support 21.
Owing to having the leveling turntable device in the respective embodiments described above, therefore, this project vehicle also has above-mentioned each beneficial effect.
Above a kind of engineering truck provided by the utility model and leveling turntable device thereof are described in detail.Apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (7)
1. the leveling turntable device of an engineering truck, be arranged at pivoting support assembly (2) and get off between (1), comprise hydraulic ram (4) and support component (3), described support component (3) is fixed on described vehicle, and can rotate relative to described pivoting support assembly (2), it is characterized in that:
Described hydraulic ram (4) is at least two;
Get off (1) described in the cylinder body (41) of each described hydraulic ram (4) is articulated with, and there is the hinge axes of equidirectional;
The expansion link (42) of each described hydraulic ram (4) is rotationally connected with described pivoting support assembly (2), and all can rotate around the direction being parallel to described hinge axes;
Described expansion link (42) relatively described cylinder body (41) can be positioned desired location.
2. leveling turntable device as claimed in claim 1, it is characterized in that, each described expansion link (42) is articulated with described pivoting support assembly (2), and the hinge axes of described expansion link (42) and described pivoting support assembly (2) is parallel to the hinge axes of described hydraulic ram (4) and described get off (1).
3. leveling turntable device as claimed in claim 2, it is characterized in that, described hydraulic ram (4) is two, described support component (3) supports the center of described pivoting support assembly (2), and two described hydraulic rams (4) are arranged at the both sides of described support component (3) symmetrically.
4. leveling turntable device as claimed in claim 3, it is characterized in that, also comprise controller and the control cock of electrical connection, described control cock is connected on the oil circuit control of described hydraulic ram (4), described controller controls described control cock and opens and closes, to make described hydraulic ram (4) fore and aft motion or stopping.
5. leveling turntable device as claimed in claim 4, is characterized in that, also comprise the double-shaft tilt angle sensor be electrically connected with described controller, the level inclination of described double-shaft tilt angle sensor sensing turntable, and is passed to described controller; Described controller controls described control cock according to the information of described level inclination and opens or cut out.
6. leveling turntable device as claimed in claim 5, it is characterized in that, also comprise the balance cock be electrically connected between described controller and described hydraulic ram (4), described hydraulic ram (4) can be locked in desired location by described balance cock.
7. an engineering truck, comprise leveling turntable device, described leveling turntable device is arranged at pivoting support assembly (2) and gets off between (1), it is characterized in that, described leveling turntable device is the leveling turntable device as described in any one of claim 1-6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420445836.8U CN204038998U (en) | 2014-08-07 | 2014-08-07 | A kind of engineering truck and leveling turntable device thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420445836.8U CN204038998U (en) | 2014-08-07 | 2014-08-07 | A kind of engineering truck and leveling turntable device thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909314A (en) * | 2015-05-11 | 2015-09-16 | 徐州重型机械有限公司 | Aerial ladder fire truck rotary table and leveling control method thereof |
| CN106703107A (en) * | 2016-12-23 | 2017-05-24 | 柳州柳工挖掘机有限公司 | Excavator |
| CN106959096A (en) * | 2017-05-09 | 2017-07-18 | 贺明丽 | A kind of moving seesaw-type measuring instrument self-level(l)ing device |
| CN106990430A (en) * | 2017-05-09 | 2017-07-28 | 中国地震局工程力学研究所 | A kind of moving seesaw-type accelerometer self-level(l)ing device |
| CN107337148A (en) * | 2017-07-04 | 2017-11-10 | 哈尔滨工业大学 | A kind of lifting mechanism of big stroke levelling |
| CN108147305A (en) * | 2018-01-12 | 2018-06-12 | 中国长江电力股份有限公司 | A kind of working face automatic leveling device and control method |
| CN108862086A (en) * | 2018-08-15 | 2018-11-23 | 太原重工股份有限公司 | Hanging device jacking apparatus and its application method |
| CN108983803A (en) * | 2018-08-16 | 2018-12-11 | 燕山大学 | The automatic horizontal control system and leveling method of mobile shallow water platform |
| CN108995040A (en) * | 2018-06-01 | 2018-12-14 | 中国矿业大学 | Cabinet levelling mechanism device |
| CN110499898A (en) * | 2019-08-27 | 2019-11-26 | 广东博智林机器人有限公司 | A kind of leveling device and the construction robot with it |
| CN110673658A (en) * | 2019-09-27 | 2020-01-10 | 合肥正浩机械科技有限公司 | Horizontal attitude adjusting mechanism of beam transporting vehicle during beam transporting on curve section cross slope |
| CN111675158A (en) * | 2020-05-28 | 2020-09-18 | 浙江鲁创电力科技有限公司 | Maintenance car with intelligence construction overhauls platform |
| CN114253277A (en) * | 2022-02-28 | 2022-03-29 | 徐工消防安全装备有限公司 | Work device control system and method for work vehicle, and work vehicle |
| CN114922014A (en) * | 2022-06-07 | 2022-08-19 | 山河智能装备股份有限公司 | Automatic leveling method of turnout laying and exchanging machine and turnout laying and exchanging machine |
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2014
- 2014-08-07 CN CN201420445836.8U patent/CN204038998U/en not_active Expired - Lifetime
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909314B (en) * | 2015-05-11 | 2018-03-06 | 徐工消防安全装备有限公司 | A kind of hook and ladder turntable and its leveling control method |
| CN104909314A (en) * | 2015-05-11 | 2015-09-16 | 徐州重型机械有限公司 | Aerial ladder fire truck rotary table and leveling control method thereof |
| CN106703107A (en) * | 2016-12-23 | 2017-05-24 | 柳州柳工挖掘机有限公司 | Excavator |
| CN106703107B (en) * | 2016-12-23 | 2019-07-30 | 柳州柳工挖掘机有限公司 | Excavator |
| CN106959096A (en) * | 2017-05-09 | 2017-07-18 | 贺明丽 | A kind of moving seesaw-type measuring instrument self-level(l)ing device |
| CN106990430A (en) * | 2017-05-09 | 2017-07-28 | 中国地震局工程力学研究所 | A kind of moving seesaw-type accelerometer self-level(l)ing device |
| CN107337148B (en) * | 2017-07-04 | 2019-11-01 | 哈尔滨工业大学 | A kind of lifting mechanism of big stroke levelling |
| CN107337148A (en) * | 2017-07-04 | 2017-11-10 | 哈尔滨工业大学 | A kind of lifting mechanism of big stroke levelling |
| CN108147305A (en) * | 2018-01-12 | 2018-06-12 | 中国长江电力股份有限公司 | A kind of working face automatic leveling device and control method |
| CN108995040A (en) * | 2018-06-01 | 2018-12-14 | 中国矿业大学 | Cabinet levelling mechanism device |
| CN108862086A (en) * | 2018-08-15 | 2018-11-23 | 太原重工股份有限公司 | Hanging device jacking apparatus and its application method |
| CN108983803A (en) * | 2018-08-16 | 2018-12-11 | 燕山大学 | The automatic horizontal control system and leveling method of mobile shallow water platform |
| CN110499898A (en) * | 2019-08-27 | 2019-11-26 | 广东博智林机器人有限公司 | A kind of leveling device and the construction robot with it |
| CN110673658A (en) * | 2019-09-27 | 2020-01-10 | 合肥正浩机械科技有限公司 | Horizontal attitude adjusting mechanism of beam transporting vehicle during beam transporting on curve section cross slope |
| CN111675158A (en) * | 2020-05-28 | 2020-09-18 | 浙江鲁创电力科技有限公司 | Maintenance car with intelligence construction overhauls platform |
| CN111675158B (en) * | 2020-05-28 | 2021-08-17 | 浙江鲁创电力科技有限公司 | Maintenance car with intelligence construction overhauls platform |
| CN114253277A (en) * | 2022-02-28 | 2022-03-29 | 徐工消防安全装备有限公司 | Work device control system and method for work vehicle, and work vehicle |
| CN114253277B (en) * | 2022-02-28 | 2022-07-05 | 徐工消防安全装备有限公司 | Work device control system and method for work vehicle, and work vehicle |
| CN114922014A (en) * | 2022-06-07 | 2022-08-19 | 山河智能装备股份有限公司 | Automatic leveling method of turnout laying and exchanging machine and turnout laying and exchanging machine |
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Effective date of registration: 20170210 Address after: 221004 Jiangsu Province, Xuzhou City Yunlong District No. 165 Patentee after: XCMG FIRE-FIGHTING SAFETY EQUIPMENT Co.,Ltd. Address before: 221004 Xuzhou, Zhejiang Province, Jiangsu Road No. 165 Patentee before: Xuzhou Heavy Machinery Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20141224 |
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| CX01 | Expiry of patent term |