CN103043581B - A kind of turntable inhibiting device, method and construction machinery and equipment - Google Patents
A kind of turntable inhibiting device, method and construction machinery and equipment Download PDFInfo
- Publication number
- CN103043581B CN103043581B CN201210562109.5A CN201210562109A CN103043581B CN 103043581 B CN103043581 B CN 103043581B CN 201210562109 A CN201210562109 A CN 201210562109A CN 103043581 B CN103043581 B CN 103043581B
- Authority
- CN
- China
- Prior art keywords
- turntable
- supporting leg
- locating dowel
- dowel pin
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of turntable inhibiting device, be installed on the permanent seat of engineering truck, comprise first group of block, second group of block, locating dowel pin; First group of block comprises two the first blocks, and these two first blocks are installed on the same diameter of turntable circumferentially, two the first blocks and turntable center be wired to the first angle, 0 ° of < first angle < 360 °; Second group of block comprises two the second blocks, and these two second blocks are installed on the same diameter of turntable circumferentially, two the second blocks and turntable center be wired to the second angle, 0 ° of < second angle < 360 °; Locating dowel pin comprises and is installed on the first locating dowel pin on permanent seat and the second locating dowel pin, and after supporting leg on the left of construction machinery and equipment is regained, the first locating dowel pin stretches out first group of block spacing; After supporting leg on the right side of construction machinery and equipment is regained, the second locating dowel pin stretches out second group of block spacing.The present invention is by the withdrawal of supporting leg and stretch out and automatically control the spacing of turntable, ensures the safety of operation and driving.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of turntable inhibiting device, method and construction machinery and equipment.
Background technology
At present, the spacing of a lot of construction machinery and equipment (as pump truck, Elevating platform fire truck etc.) swing type mechanism adopt rotary encoder more.Rotary encoder is by controlling the rotation number of turns of driver pinion, thus the degreeof turn of restriction swing type mechanism.Because rotary encoder exists labile factor, when the angle that swing type mechanism rotates is excessive, disconnected cable conductor and hydralic hose can be twisted, make the device interrupt work worked even safety misadventure occur.In addition, a lot of construction machinery and equipment (as Elevating platform fire truck etc.) has that supporting leg is one-sided stretches out operation function.Operation under one-sided supporting leg stretches out state, must limit rotation of rotary table angle by a kind of device, ensures that construction machinery and equipment operation in the degreeof turn limited can not be tumbled, ensures safety.
Summary of the invention
In view of this, the present invention proposes a kind of turntable inhibiting device and method and construction machinery and equipment, can not tumble to solve construction machinery and equipment operation in the degreeof turn limited, safing problem.
On the one hand, the invention provides a kind of turntable inhibiting device, be installed between the permanent seat of construction machinery and equipment and turntable, described construction machinery and equipment comprises left side supporting leg and right side supporting leg, it is characterized in that, comprises first group of block, second group of block, locating dowel pin; First group of block comprises two the first blocks, and these two first blocks are installed on the same diameter of turntable circumferentially, two the first blocks and turntable center be wired to the first angle, 0 ° of < first angle < 360 °; Second group of block comprises two the second blocks, and these two second blocks are installed on the same diameter of turntable circumferentially, two the second blocks and turntable center be wired to the second angle, 0 ° of < second angle < 360 °; Locating dowel pin comprises and is installed on the first locating dowel pin on permanent seat and the second locating dowel pin, and after supporting leg on the left of construction machinery and equipment is regained, the first locating dowel pin stretches out first group of block spacing; After supporting leg on the right side of construction machinery and equipment is regained, the second locating dowel pin stretches out second group of block spacing.
Further, first locating dowel pin is provided with the first wedge, also correspondingly on the end of left side supporting leg be provided with left side supporting leg wedge, the first retracing spring is provided with between first locating dowel pin and permanent seat, after left side supporting leg stretches out, the inclined-plane of the first wedge coordinates with the inclined-plane of left side supporting leg wedge, and the first locating dowel pin is regained under the application force of left side supporting leg wedge;
Second locating dowel pin is provided with the second wedge, also correspondingly on the end of right side supporting leg is provided with right side supporting leg wedge, between the second locating dowel pin and permanent seat, be provided with the second retracing spring; After right side supporting leg stretches out, the inclined-plane of the second wedge coordinates with the inclined-plane of right side supporting leg wedge, and the second locating dowel pin is regained under the effect of right side supporting leg wedge.
Further, also comprise proximity switch, proximity switch is arranged on each first block and the second block or is arranged on the turntable near each first block and the second block, when the first locating dowel pin or the second locating dowel pin touch proximity switch, the actuating device of the controller control turntable of construction machinery and equipment stops operating.
Further, 0 ° of < first angle < 180 °, 0 ° of < second angle < 180 °.
Further, the first locating dowel pin and the second locating dowel pin are provided with proximity switch, when the first block and the second block touch proximity switch, the actuating device of the controller control turntable of construction machinery and equipment stops operating.
Further, after supporting leg on the left of construction machinery and equipment and right side supporting leg are all regained, the first locating dowel pin and the second locating dowel pin all stretch out restriction turntable both forward and reverse directions and rotate.
Further, first group of block and second group of block are installed on two different-diameters of turntable circumferentially.
Further, the first angle equals the second angle, and one of them first block of first group of block and one of them second gear merged block of second group of block are a block.
Additionally provide a kind of turntable limit method on the other hand, it is characterized in that, after supporting leg on the left of construction machinery and equipment is regained, and after on the right side of construction machinery and equipment, supporting leg stretches out, turntable is limited in the first angle range and rotates; After supporting leg on the right side of construction machinery and equipment is regained, and after on the left of construction machinery and equipment, supporting leg stretches out, turntable is limited in the second angle range and rotates; 0 ° of < first corner < 360 °, 0 ° of < second corner < 360 °.
Further, after supporting leg on the left of construction machinery and equipment and right side supporting leg are all regained, forbid that turntable both forward and reverse directions rotates;
Further, after supporting leg on the left of construction machinery and equipment and right side supporting leg all stretch out, turntable can 360 ° of rotations.
Additionally provide a kind of construction machinery and equipment on the other hand, comprise vehicle chassis and above-mentioned turntable inhibiting device, described permanent seat is vehicle chassis.
A kind of turntable inhibiting device provided by the invention, method and construction machinery and equipment beneficial effect are, achieve construction machinery and equipment in the process of moving to the limit function of turntable, forbid that turntable both forward and reverse directions rotates, construction machinery and equipment is in operation process, by the withdrawal of supporting leg with stretch out and automatically control the spacing of turntable, achieve the position-limiting action of turntable under different operating mode, ensure the safety of operation and driving.Adopt the mode based on mechanical position limitation, still can use when control system breaks down, ensure that operation and traffic safety better.Turntable rotary stopper and spacing releasing are full-automatic process, do not need manual operation, and operation is convenient, and efficiency is high.Meanwhile, simple and reliable for structure, mechanical position limitation, precision is high, and safe reliability is high.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is construction machinery and equipment first operating condition structural representation of the present invention;
Fig. 2 is the second operating condition structural representation of Fig. 1 construction machinery and equipment;
Fig. 3 is the 3rd operation status architecture schematic diagram of Fig. 1 construction machinery and equipment;
Fig. 4 is the turntable limit device structure schematic diagram of Fig. 1;
Fig. 5 is the first locating dowel pin structural representation of Fig. 4;
Fig. 6 is the A-A view of Fig. 5.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1 to Figure 3, construction machinery and equipment comprises vehicle chassis 1, turntable 2, left side supporting leg 13 and 14, right side supporting leg 11 and 12, jib 3.Turntable 2 is installed on vehicle chassis, and jib 3 is fixedly connected on turntable 2.Turntable 2 and jib 3 can rotate on relative vehicle chassis 1 mutually.
Turntable limit method provided by the invention, as shown in Figure 2, after supporting leg on the left of construction machinery and equipment 13 and 14 is regained, and after on the right side of construction machinery and equipment, supporting leg 11 and 12 stretches out, turntable 2 is limited in the first corner R 1 scope and rotates; Jib 3 swings in the first corner R 1 region, ensure that engineer machinery operation safety and stability, prevent construction machinery and equipment centre-of gravity shift from causing rollover, first corner R 1 can be determined according to the center of gravity calculation of the length of right side supporting leg 11 and 12 and construction machinery and equipment, ensures jib 3 job safety in the first corner R 1 region.Generally can in 0 ° of < first corner R 1 <, 360 ° of regions.As shown in Figure 1, after supporting leg on the right side of construction machinery and equipment 11 and 12 is regained, and after on the left of construction machinery and equipment, supporting leg 13 and 14 stretches out, turntable 2 is limited in the second corner R 2 scope and rotates; Jib 3 swings in the second corner R 2 region, ensure that engineer machinery operation safety and stability, prevent construction machinery and equipment centre-of gravity shift from causing rollover, second corner R 2 can be determined according to the center of gravity calculation of the length of left side supporting leg 13 and 14 and construction machinery and equipment, ensures jib 3 job safety in the second corner R 2 region.Generally can in 0 ° of < second corner R 2 <, 360 ° of regions.
As shown in Figure 3, after supporting leg on the left of construction machinery and equipment 13 and 14 and right side supporting leg 11 and 12 all stretch out, turntable 2 can 360 ° of rotations, and namely jib 3 can 360 ° of rotary operations, and jib 3 rotary operation is unrestricted.After supporting leg on the left of construction machinery and equipment 13 and 14 and right side supporting leg 11 and 12 are all regained, forbid that turntable 2 both forward and reverse directions rotates, namely jib 3 is locked, and now jib 3 is horizontal, can not rotary operation; Ensure that construction machinery and equipment transportation safety performance on highway.
As shown in Fig. 4, Fig. 5, Fig. 6, turntable inhibiting device provided by the invention comprises first group of block, second group of block, locating dowel pin; First group of block comprises two the first block 20a and 20b, and these two the first block 20a and 20b are installed on the same diameter of turntable 2 circumferentially, two the first block 20a and 20b and turntable 2 center be wired to the first angle Q1,0 ° of < first angle Q1 < 360 ° also can be 0 ° of < first angle Q1 < 180 °.As shown in Figure 2, locating dowel pin comprises the first locating dowel pin 101 and the second locating dowel pin 102 be installed on vehicle chassis 1.First angle Q1 equals the first corner R 1, but because of the existence of the first locating dowel pin 101, the first angle Q1 is less times greater than the first corner R 1.
Second group of block comprises two the second block 21a and 21b, and these two the second block 21a and 21b are installed on the same diameter of turntable 2 circumferentially, two the second block 21a and 21b and turntable 2 center be wired to the first angle Q2,0 ° of < second angle Q2 < 360 ° also can be 0 ° of < second angle Q2 < 180 °.As shown in Figure 1, the second angle Q2 equals the second corner R 2, but because of the existence of the second locating dowel pin 102, the second angle Q2 is less times greater than the second corner R 2.In the program, first group of block and second group of block are installed on two different-diameters of turntable 2 circumferentially; First block 20a and 20b is greater than the second block 21a and 21b from turntable 2 centre distance from turntable 2 centre distance, but also can be less than the second block 21a and 21b from turntable 2 centre distance from turntable 2 centre distance by the first block 20a and 20b.
In order to the spacing symmetry in jib left and right, the first angle Q1 can be designed and equal the second angle Q2, simultaneously when the first angle Q1 and the second angle Q2 meets Structural Design Requirement (, when first block 20a and the second block 21a and turntable center angulation and the first angle Q1 and the second angle Q2 sum equal 360 °), the first block 20b and the second block 21b also can merge into 1 block.
As shown in Figure 5 and Figure 6, locating dowel pin comprises the first locating dowel pin 101 and the second locating dowel pin 102 be installed on vehicle chassis 1.First locating dowel pin 101 is provided with the first wedge 1011, also correspondingly on the end of left side supporting leg 14 be provided with left side supporting leg wedge 1401, be provided with the first retracing spring 103 between first locating dowel pin 101 and vehicle chassis 1, under normal circumstances, the first locating dowel pin 101 is in the state of stretching out.After left side supporting leg 14 stretches out, the inclined-plane of the first wedge 1011 coordinates with the inclined-plane of left side supporting leg wedge 1401, under supporting leg wedge 1401 application force of left side, overcome the first retracing spring 103 to promote the first wedge 1011 and move down, the first locating dowel pin 101 is made to move down withdrawal, first locating dowel pin 101 removes the position-limiting action to the first block 20a and 20b, thus removes the position-limiting action to turntable.After left side supporting leg 14 is regained, the inclined-plane of the first wedge 1011 and the inclined-plane of left side supporting leg wedge 1401 depart from, first locating dowel pin 101 resets and stretches out under the first retracing spring 103 acts on, and carries out spacing, thus carry out spacing to turntable to the first block 20a and 20b.Turntable 2 is rotated in the first corner R 1 region.
Second locating dowel pin 102 is identical with the first locating dowel pin 101, second locating dowel pin 102 is provided with the second wedge, also correspondingly on the end of right side supporting leg be provided with right side supporting leg wedge 1201, the second retracing spring is provided with between second locating dowel pin 102 and vehicle chassis 1, under normal circumstances, the second locating dowel pin 102 is in the state of stretching out; After right side supporting leg 12 stretches out, the inclined-plane of the second wedge coordinates with the inclined-plane of right side supporting leg wedge 1201, and the second locating dowel pin 102 is regained under the application force of right side supporting leg wedge 1201.Second locating dowel pin 102 removes the position-limiting action to the second block 21a and 21b, thus removes the position-limiting action to turntable.After right side supporting leg 12 is regained, the inclined-plane of the second wedge and the inclined-plane of right side supporting leg wedge 1201 depart from, and the second locating dowel pin 102 resets and stretches out under the second action of reset spring, carries out spacing, thus carry out spacing to turntable to the second block 21a and 21b.Turntable 2 is rotated in the second corner R 2 region.
After supporting leg on the left of construction machinery and equipment 13 and 14 and right side supporting leg 11 and 12 are all regained, the first locating dowel pin 101 and the second locating dowel pin 102 all stretch out.First block 20a and the first locating dowel pin 101 against, prevent turntable 2 left-hand revolution.Second block 21a and the second locating dowel pin 102 against, prevent turntable 2 clickwise.Achieve turntable 2 both forward and reverse directions spin locking.Now jib 3 is horizontal.
Build the pressure in order to avoid causing to hydraulic efficiency pressure system after spacing, avoid bringing infringement to structure simultaneously, affect structural life-time, also can be provided with proximity switch on each first block 20a and 20b and the second block 21a and 21b, also proximity switch can be arranged on the turntable 2 near each first block 20a and 20b and the second block 21a and 21b.Turntable 2 rotates, and the first locating dowel pin 101 or the second locating dowel pin 102, when contact maybe will contact first group of block or second group of block, can touch proximity switch.For better ensureing the life-span of locating dowel pin and block, first the first locating dowel pin 101 or the second locating dowel pin 102 touch proximity switch, and then lean with the first block 20a and 20b or the second block 21a and 21b.When the first locating dowel pin 101 or the second locating dowel pin 102 touch proximity switch, the actuating device of the controller control turntable 2 of construction machinery and equipment stops operating, and then carries out mechanical position limitation to turntable 2.Also can carry out mechanical position limitation simultaneously and actuating device is stopped operating.
Also proximity switch can be provided with on the first locating dowel pin 101 and the second locating dowel pin 102 in addition,
When the first block 20a and 20b and the second block 21a and 21b touches proximity switch, the actuating device of the controller control turntable 2 of construction machinery and equipment stops operating.
In order to realize the withdrawal of left and right sides supporting leg and stretch out the spacing of automatic control turntable 2, achieve the position-limiting action of turntable 2 under different operating mode, ensure that the safety method of operation and driving is a lot, as the first block 20a and 20b and the second block 21a and 21b is replaced with proximity switch, when the first locating dowel pin 101 or the second locating dowel pin 102 touch proximity switch, the actuating device of the controller control turntable 2 of construction machinery and equipment stops operating.Also on the left of can being obtained by sensor, supporting leg 13 and 14 and right side supporting leg 11 and 12 stretch out and retracted state signal, are controlled the slewing area of turntable 2 by controller.
Present invention achieves construction machinery and equipment in the process of moving to the limit function of turntable 2, forbid that turntable 2 both forward and reverse directions rotates, construction machinery and equipment is in operation process, by the withdrawal of supporting leg with stretch out and automatically control the spacing of turntable 2, achieve the position-limiting action of turntable under different operating mode, ensure the safety of operation and driving.Adopt the mode based on mechanical position limitation, still can use when control system breaks down, better ensure that operation and traffic safety.Turntable 2 rotary stopper and spacing releasing are full-automatic process, do not need manual operation, and operation is convenient, and efficiency is high.Meanwhile, simple and reliable for structure, mechanical position limitation, precision is high, and safe reliability is high.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a turntable inhibiting device, is installed between the permanent seat of construction machinery and equipment and turntable, and described construction machinery and equipment comprises left side supporting leg and right side supporting leg, it is characterized in that, comprises first group of block, second group of block, locating dowel pin; First group of block comprises two the first blocks, and these two first blocks are installed on the same diameter of turntable circumferentially, two the first blocks and turntable center be wired to the first angle, 0 ° of < first angle < 360 °; Second group of block comprises two the second blocks, and these two second blocks are installed on the same diameter of turntable circumferentially, two the second blocks and turntable center be wired to the second angle, 0 ° of < second angle < 360 °; Locating dowel pin comprises and is installed on the first locating dowel pin on permanent seat and the second locating dowel pin, and after supporting leg on the left of construction machinery and equipment is regained, the first locating dowel pin stretches out first group of block spacing; After supporting leg on the right side of construction machinery and equipment is regained, the second locating dowel pin stretches out second group of block spacing.
2. turntable inhibiting device according to claim 1, is characterized in that,
First locating dowel pin is provided with the first wedge, also correspondingly on the end of left side supporting leg be provided with left side supporting leg wedge, the first retracing spring is provided with between first locating dowel pin and permanent seat, after left side supporting leg stretches out, the inclined-plane of the first wedge coordinates with the inclined-plane of left side supporting leg wedge, and the first locating dowel pin is regained under the application force of left side supporting leg wedge;
Second locating dowel pin is provided with the second wedge, also correspondingly on the end of right side supporting leg is provided with right side supporting leg wedge, between the second locating dowel pin and permanent seat, be provided with the second retracing spring; After right side supporting leg stretches out, the inclined-plane of the second wedge coordinates with the inclined-plane of right side supporting leg wedge, and the second locating dowel pin is regained under the effect of right side supporting leg wedge.
3. turntable inhibiting device according to claim 1 and 2, it is characterized in that, also comprise proximity switch, proximity switch is arranged on each first block and the second block or is arranged on the turntable near each first block and the second block, when the first locating dowel pin or the second locating dowel pin touch proximity switch, the actuating device of the controller control turntable of construction machinery and equipment stops operating.
4. turntable inhibiting device according to claim 1 and 2, is characterized in that, 0 ° of < first angle < 180 °, 0 ° of < second angle < 180 °.
5. turntable inhibiting device according to claim 1 and 2, it is characterized in that, first locating dowel pin and the second locating dowel pin are provided with proximity switch, and when the first block and the second block touch proximity switch, the actuating device of the controller control turntable of construction machinery and equipment stops operating.
6. turntable inhibiting device according to claim 1 and 2, is characterized in that, after supporting leg on the left of construction machinery and equipment and right side supporting leg are all regained, the first locating dowel pin and the second locating dowel pin all stretch out restriction turntable both forward and reverse directions and rotate.
7. turntable inhibiting device according to claim 1 and 2, is characterized in that, first group of block and second group of block are installed on two different-diameters of turntable circumferentially.
8. turntable inhibiting device according to claim 1 and 2, is characterized in that, the first angle equals the second angle, and one of them first block of first group of block and one of them second gear merged block of second group of block are a block.
9. one kind adopts the turntable limit method of the turntable inhibiting device described in any one of claim 1-8, it is characterized in that, after supporting leg on the left of construction machinery and equipment is regained, and after on the right side of construction machinery and equipment, supporting leg stretches out, first locating dowel pin stretches out, and turntable is limited in the first angle range and rotates; After supporting leg on the right side of construction machinery and equipment is regained, and after on the left of construction machinery and equipment, supporting leg stretches out, the second locating dowel pin stretches out, and turntable is limited in the second angle range and rotates; 0 ° of < first corner < 360 °, 0 ° of < second corner < 360 °.
10. turntable limit method according to claim 9, is characterized in that, after supporting leg on the left of construction machinery and equipment and right side supporting leg are all regained, the first locating dowel pin and the second locating dowel pin stretch out, and forbid that turntable both forward and reverse directions rotates.
11. turntable limit methods according to claim 9 or 10, is characterized in that, after supporting leg on the left of construction machinery and equipment and right side supporting leg all stretch out, turntable can 360 ° of rotations.
12. 1 kinds of construction machinery and equipments, is characterized in that, comprise vehicle chassis and the turntable inhibiting device as described in claim 1 to 8 any one, described permanent seat is vehicle chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210562109.5A CN103043581B (en) | 2012-12-21 | 2012-12-21 | A kind of turntable inhibiting device, method and construction machinery and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210562109.5A CN103043581B (en) | 2012-12-21 | 2012-12-21 | A kind of turntable inhibiting device, method and construction machinery and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103043581A CN103043581A (en) | 2013-04-17 |
| CN103043581B true CN103043581B (en) | 2016-04-06 |
Family
ID=48056476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210562109.5A Active CN103043581B (en) | 2012-12-21 | 2012-12-21 | A kind of turntable inhibiting device, method and construction machinery and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103043581B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634582B (en) * | 2013-11-08 | 2017-07-11 | 北汽福田汽车股份有限公司 | A kind of steering wheel stopping means and steering wheel limit method |
| CN103592895B (en) * | 2013-11-26 | 2016-02-10 | 北京经纬恒润科技有限公司 | A kind of spacing error correction method, device, controller and servo-control system |
| CN103863960B (en) * | 2014-03-07 | 2016-04-20 | 南京一嘉起重机械制造有限公司 | Electronic cantilever crane hoisting crane anglec of rotation adjustable mechanism |
| CN104061951B (en) * | 2014-06-05 | 2016-08-17 | 中国科学院西安光学精密机械研究所 | Two-dimensional tracking turntable surpasses 360 ° of rotary position-limit mechanisms |
| CN105353774B (en) * | 2014-08-22 | 2018-03-20 | 北京瑞赛长城航空测控技术有限公司 | The optional formula limiting mechanism of rotary table in angle range 0~± 360 ° |
| CN105278430B (en) * | 2015-11-17 | 2018-07-20 | 湖南五新隧道智能装备股份有限公司 | A kind of arm support control system and concrete spraying vehicle |
| CN105439019B (en) * | 2015-12-21 | 2018-06-29 | 苏州大方特种车股份有限公司 | The limiting device and truck-mounted crane of truck-mounted crane |
| CN106735613B (en) * | 2016-11-16 | 2018-10-02 | 天津百利机械装备研究院有限公司 | Spiral bevel gear tooth top corner cutting off apparatus based on robot |
| CN107500154A (en) * | 2017-09-22 | 2017-12-22 | 中国东方电气集团有限公司 | A kind of telescoping boom being applied under special environment |
| CN109990024B (en) * | 2019-05-06 | 2020-07-10 | 内蒙古工业大学 | Limiting mechanism with angle larger than plus or minus 180 degrees |
| CN110510530B (en) * | 2019-08-21 | 2020-11-06 | 中船重工(青岛)海洋装备研究院有限责任公司 | Self-locking structure for rotation of ocean crane |
| CN113758377B (en) * | 2020-05-19 | 2023-05-16 | 山河智能装备股份有限公司 | Integrated equipment for detecting and discharging lightning and method for detecting and discharging lightning |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11139770A (en) * | 1997-11-07 | 1999-05-25 | Komatsu Ltd | Revolving deceleration control device of crane and controlling method thereof |
| EP0779237B1 (en) * | 1995-12-15 | 2001-10-10 | Liebherr-Werk Ehingen GmbH | Mobile crane with an overload protection device |
| CN201071274Y (en) * | 2007-06-20 | 2008-06-11 | 徐州重型机械有限公司 | Automatic turning lock device of crane turning table |
| JP2011213462A (en) * | 2010-04-01 | 2011-10-27 | Ihi Construction Machinery Ltd | Boom turning limiting method and device of concrete pump vehicle with boom |
| CN102616688A (en) * | 2012-04-09 | 2012-08-01 | 三一汽车起重机械有限公司 | Rotary locking device and engineering machinery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4191301A (en) * | 1978-06-19 | 1980-03-04 | Auto Crane Company | Rotation limiter |
-
2012
- 2012-12-21 CN CN201210562109.5A patent/CN103043581B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0779237B1 (en) * | 1995-12-15 | 2001-10-10 | Liebherr-Werk Ehingen GmbH | Mobile crane with an overload protection device |
| JPH11139770A (en) * | 1997-11-07 | 1999-05-25 | Komatsu Ltd | Revolving deceleration control device of crane and controlling method thereof |
| CN201071274Y (en) * | 2007-06-20 | 2008-06-11 | 徐州重型机械有限公司 | Automatic turning lock device of crane turning table |
| JP2011213462A (en) * | 2010-04-01 | 2011-10-27 | Ihi Construction Machinery Ltd | Boom turning limiting method and device of concrete pump vehicle with boom |
| CN102616688A (en) * | 2012-04-09 | 2012-08-01 | 三一汽车起重机械有限公司 | Rotary locking device and engineering machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103043581A (en) | 2013-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103043581B (en) | A kind of turntable inhibiting device, method and construction machinery and equipment | |
| CN104401695B (en) | Inspection device | |
| KR101993153B1 (en) | Apparatus and method for vertical alignment of radar for vehicle | |
| KR102096930B1 (en) | Safety device of mobile crane | |
| JP2017530273A (en) | Auto concrete pump and its operation method | |
| JP2018115695A (en) | Vehicle shift control apparatus | |
| WO2013113225A1 (en) | Supporting device and engineering machinery vehicle | |
| CN201598128U (en) | Turntable hydraulic locking pin device and crane including the same | |
| CN102493338B (en) | Automatic self-locking device of safety dogs of bridge detection vehicle | |
| CN102865262A (en) | Rotary hydraulic system and engineering machine | |
| CN203637841U (en) | Telescopic locking device for railway container vehicle | |
| CN102661049A (en) | Anti-interference device and method for cantilever crane, and cantilever crane and pump truck comprising device | |
| CN104442336A (en) | Unlocking mechanism of battery box of electric vehicle | |
| CN203702194U (en) | Hydraulic support and operating valvethereof | |
| JP2011213462A (en) | Boom turning limiting method and device of concrete pump vehicle with boom | |
| CN102555885B (en) | Automatic switching device of vehicle disc lock of dump truck for containers | |
| CN103395703B (en) | The supporting mechanism of jib and construction machinery and equipment | |
| CN204434138U (en) | Jib structure and construction machinery and equipment | |
| CN204367860U (en) | A kind of electric automobile battery box release mechanism | |
| CN103395701B (en) | For lockable mechanism and the construction machinery and equipment of turntable and jib | |
| CN203996166U (en) | Cushion block structure | |
| CN102774667B (en) | Arm support of ship loader blocking device and locking means thereof | |
| CN105484767A (en) | Jib and concrete spraying truck | |
| CN203129607U (en) | Cantilever crane supporting device as well as concrete pump truck and engineering machinery comprising cantilever crane supporting device | |
| CN102874698B (en) | Device and method for preventing rotary mechanism from automatically rotating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |