CN102887133B - Supporting leg locking structure and construction machinery and equipment - Google Patents
Supporting leg locking structure and construction machinery and equipment Download PDFInfo
- Publication number
- CN102887133B CN102887133B CN201210351538.8A CN201210351538A CN102887133B CN 102887133 B CN102887133 B CN 102887133B CN 201210351538 A CN201210351538 A CN 201210351538A CN 102887133 B CN102887133 B CN 102887133B
- Authority
- CN
- China
- Prior art keywords
- dead bolt
- support leg
- oscillating support
- locking structure
- supporting leg
- 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
Landscapes
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The present invention relates to engineering machinery field, disclose a kind of supporting leg locking structure and construction machinery and equipment.The oscillating support leg of described supporting leg locking structure on locking vehicle frame, the dead bolt comprising lock housing and be set in movably in described lock housing, described lock housing is fixedly arranged on described vehicle frame, and the external part of described dead bolt is towards the plane of oscillation of described oscillating support leg; Described supporting leg locking structure also comprises the first lock section being fixedly arranged on described oscillating support leg, and described first lock section is provided with the first lockhole, and the external part of described dead bolt can insert in described first lockhole when described oscillating support leg backswing.The embodiment of the present invention provides supporting leg locking structure, the locking of oscillating support leg and telescopic outrigger and vehicle frame can be realized, avoid stretching out in transportation at oscillating support leg, eliminate potential safety hazard, it also avoid that telescopic outrigger is improper to be stretched out, in addition, also effectively reduce oscillating support leg when backswing to the impact that vehicle frame causes, avoid the generation of overswing phenomenon.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of supporting leg locking structure and construction machinery and equipment.
Background technology
Car hosit is provided with a pair oscillating support leg, telescopic outrigger is provided with in oscillating support leg, in use, under the control of operating personal, oscillating support leg outwards swings on corresponding position, and then telescopic outrigger stretches out in oscillating support leg, and after use terminates, then first control telescopic outrigger to be retracted in oscillating support leg, and then control oscillating support leg backswing, and be fixed on the both sides of vehicle frame abreast.
At present, car hosit in the process of moving, easily outwards show by oscillating support leg, and then exceed overall width, there is potential safety hazard like this.In addition, in car hosit use procedure, if the operation order of operating personal is wrong, then easily cause telescopic outrigger to protract when oscillating support leg is not shown, and then break periphery and walk the parts such as platen.In addition, oscillating support leg, when backswing, impacts larger to vehicle frame generation.
Therefore, how improving for above-mentioned defect and deficiency, is those skilled in the art's technical barriers urgently to be resolved hurrily.
Summary of the invention
In view of this, the present invention is intended to propose a kind of supporting leg locking structure and construction machinery and equipment, to solve the problem that in prior art, oscillating support leg is easily shown when transporting.
On the one hand, the invention provides a kind of supporting leg locking structure, oscillating support leg on locking vehicle frame, described supporting leg locking structure comprises lockable mechanism, the dead bolt that described lockable mechanism comprises lock housing and is set in movably in described lock housing, described lock housing is fixedly arranged on described vehicle frame, and the external part of described dead bolt is towards the plane of oscillation of described oscillating support leg; Described supporting leg locking structure also comprises the first lock section being fixedly arranged on described oscillating support leg, and described first lock section is provided with the first lockhole, and the external part of described dead bolt can insert in described first lockhole when described oscillating support leg backswing.
Further, described lockable mechanism also comprises the elastic component described dead bolt being remained on the state of stretching out; Described first lock section can be touched the external part of described dead bolt and insert it in described first lockhole when described oscillating support leg backswing.
Further, the external part of described dead bolt is provided with touching guiding surface.
Further, telescopic outrigger is provided with in described oscillating support leg; Described supporting leg locking structure also comprises the second lock section being arranged at described telescopic outrigger, and described second lock section is provided with the second lockhole, and described second lockhole is when described telescopic outrigger is in retracted mode and described first lockhole centering; The external part of described dead bolt can insert when described oscillating support leg backswing in described first lockhole and described second lockhole.
Further, described lockable mechanism also comprises bearing, and described lock housing is fixed on described bearing, and described bearing is fixedly installed on described vehicle frame; Described bearing is positioned at described oscillating support leg backswing position and is provided with cushion rubber.
Further, the wall portion of described lock housing runs through and is provided with connected stroke passage and limited mouth; Described lockable mechanism also comprises lever, and one end of described lever is fixed on described dead bolt, and the other end stretches out outside described stroke passage or limited mouth; Described lever can move to described limited mouth along described stroke passage, and when moving to described limited mouth, described dead bolt is in retracted mode.
Further, the external diameter of described dead bolt is less than the internal diameter of described lock housing, and described dead bolt is provided with slide protrusion portion, and described dead bolt is slided by described slide protrusion portion and is arranged in described lock housing.
Further, the wall portion of described lock housing runs through and is provided with lubrication channel, and the outer end of described lubrication channel is provided with lubricator cup.
On the other hand, present invention also offers a kind of construction machinery and equipment, described construction machinery and equipment is provided with the supporting leg locking structure described in above-mentioned any one.
Further, described construction machinery and equipment is hoisting crane.
A kind of supporting leg locking structure provided by the invention in use, when oscillating support leg backswing, dead bolt by lockable mechanism inserts in the first lockhole of the first lock section on oscillating support leg, to realize the locking of oscillating support leg and vehicle frame, this avoid oscillating support leg outwards to show in transportation, thus eliminate potential safety hazard, in addition, in one more specifically scheme, lockable mechanism includes elastic component dead bolt being remained on the state of stretching out further, and the first lock section can be touched the external part of dead bolt when oscillating support leg backswing and insert it in the first lockhole, achieves automatic locking during oscillating support leg backswing like this, in addition, in one more specifically scheme, telescopic outrigger in oscillating support leg is provided with the second lock section of band second lockhole, when telescopic outrigger is retracted, during oscillating support leg backswing, dead bolt by lockable mechanism inserts in the first lockhole and the second lockhole, lock with vehicle frame while of to realize oscillating support leg and telescopic outrigger, like this while avoiding oscillating support leg outwards to show, it also avoid the improper of telescopic outrigger to stretch out (namely causing telescopic outrigger to stretch out when oscillating support leg is not shown because operation order is wrong), thus avoid periphery and walk the parts such as platen and be damaged, in addition, in one more specifically scheme, the position bearing of lockable mechanism being positioned at oscillating support leg backswing is provided with cushion rubber, which reduces oscillating support leg when backswing to the impact that vehicle frame causes.
A kind of construction machinery and equipment provided by the invention is provided with above-mentioned supporting leg locking structure, and because above-mentioned supporting leg locking structure has above-mentioned technique effect, therefore, this project machinery also has corresponding technique effect.
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:
The structural representation of a kind of supporting leg locking structure that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the structural representation of lockable mechanism in Fig. 1;
Fig. 3 is the plan structure schematic diagram of lock housing part in Fig. 2;
Fig. 4 is the right TV structure schematic diagram of Fig. 3;
Fig. 5 is the axonometric drawing of Fig. 2.
Main element nomenclature:
10 lockable mechanisms
20 oscillating support legs
30 telescopic outriggers
40 vehicle frames
1 lock housing
2 dead bolts
3 elastic components
4 levers
5 bearings
6 cushion rubbers
7 lubricator cups
11 install passage
12 stroke passages
13 limited mouths
22 slide protrusion portions
23 external parts
24 touching guiding surfaces
201 first lock sections
301 second lock sections
Detailed description of the invention
To it should be pointed out that in this part to the description of concrete structure and description order it is only explanation to specific embodiment, should not be considered as there is any restriction to protection scope of the present invention.In addition, when not conflicting, the embodiment in this part and the feature in embodiment can combine mutually.
Please also refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, below in conjunction with accompanying drawing, the embodiment of the present invention is elaborated.
Shown in composition graphs 1, the supporting leg locking structure of this embodiment is used for the oscillating support leg 20 on locking vehicle frame 40, mainly comprises lockable mechanism 10, first lock section 201 and the second lock section 301 etc.
Wherein, oscillating support leg 20 is articulated with on vehicle frame 40, namely oscillating support leg 20 can turn an angle relative to vehicle frame 40, and then realize showing and swinging back (arrow in Fig. 1 is for swinging back direction), telescopic outrigger 30 is provided with in oscillating support leg 20, telescopic outrigger 30 can be retracted in oscillating support leg 20, also can stretch out in oscillating support leg 20.First lock section 201 is fixedly arranged on adjacent caudal position on oscillating support leg 20, first lock section 201 is provided with the first lockhole (figure does not identify), second lock section 301 is fixedly arranged on adjacent caudal position on telescopic outrigger 30, second lock section 301 is provided with the second lockhole, when telescopic outrigger 30 is in retracted mode, first lock section 201 and the second lock section 301 interlock stacked, the first lockhole relative with the second lockhole (centering).In specific implementation process, preferably, first lock section 201 and the second lock section 301 can adopt platy structure (as being connected otic placode), and are welded on oscillating support leg 20 and telescopic outrigger 30 respectively, and the central axis of the first lockhole and the second lockhole is in the plane of oscillation of oscillating support leg 20.
Shown in composition graphs 2, lockable mechanism 10 mainly comprises lock housing 1, dead bolt 2, elastic component 3, lever 4, bearing 5 and cushion rubber 6 etc.
Be provided with in lock housing 1 and passage 11 is installed; Dead bolt 2 is arranged at movably to be installed in passage 11; Elastic component 3 is for remaining on dead bolt 2 state of stretching out, namely elastic component is installed outside passage 11 for making the external part 23 of dead bolt 2 remain on, preferably, elastic component 3 is spring, and this spring housing is located on dead bolt 2, and its one end and lock housing 1 offset, the other end and dead bolt 2 offset, dead bolt 2 in other embodiments, also can adopt the elastic component of other types, as long as can be realized to remain on the state of stretching out.
Shown in composition graphs 3 and Fig. 5, the wall portion of lock housing 1 extends and runs through and is provided with connected stroke passage 12 and limited mouth 13 on the retracted orientation of dead bolt 2, dead bolt 2 is fixed in one end of lever 4, the other end stretches out outside stroke passage 12 or limited mouth 13, it can be made to move to limited mouth 13 along stroke passage 12 by control operation handle 4, when lever 4 is positioned at limited mouth 13, dead bolt 2 is restricted to retracted mode.
Shown in composition graphs 1 and Fig. 2, lock housing 1 is fixed on bearing 5, bearing 5 is fixedly installed on vehicle frame 40 by the mode such as to be spirally connected, the external part 23 of dead bolt 2 is towards the plane of oscillation of (being preferably perpendicular to) oscillating support leg 20, preferably, the external part 23 of dead bolt 2 is provided with touching guiding surface 24, when oscillating support leg 20 backswing, first lock section 201 contacts the external part 23 of dead bolt 2 with the second lock section 301, when moving ahead along touching guiding surface 24, the external part 23 pressurized retraction certain distance of dead bolt 2, until when the first lockhole of the first lock section 201 and the second lock section 301 and the second lockhole aim at the external part 23 of dead bolt 2, under the effect of elastic component 3, the external part 23 of dead bolt 2 inserts in the first lockhole and the second lockhole, and then realize the locking of oscillating support leg 20 and telescopic outrigger 3 and vehicle frame 40, in addition, cushion rubber 6 is arranged at position bearing 6 being positioned at oscillating support leg 20 backswing, and oscillating support leg 20, after crossing dead bolt, will touch cushion rubber 6, under the effect of cushion rubber 6, the impact to vehicle frame 40 that oscillating support leg 20 produces because of back swing motion will greatly reduce.
The following describes principle of work and the manipulation process of above-mentioned supporting leg locking structure:
Operation complete need transport time, control operation handle 4 is in stroke passage 12, dead bolt 2 is made to be in the state of stretching out under the effect of elastic component, then first controlling telescopic outrigger 30 is retracted in oscillating support leg 20, make the first lockhole relative with the second lockhole, control oscillating support leg 20 backswing again, make the external part 23 of the first lock section and the second lock section touching dead bolt 2, and then make the external part 23 of dead bolt insert in the first lockhole and the second lockhole, achieve automatically locking of oscillating support leg 20 and telescopic outrigger 30 and vehicle frame 40 like this, avoid the outer pendulum of oscillating support leg 20 in transportation and exceed car load width, eliminate potential safety hazard, it also avoid the improper damage periphery of stretching out of telescopic outrigger 30 and walk the parts such as platen.When operation field, even if exceed car load width during pendulum outer in view of oscillating support leg 20 generally can not affect other equipment around car load, and in order to ensure convenience, it is made to move in limited mouth 13 along stroke passage 12 by control operation handle 4, thus dead bolt 2 is limited in retracted mode, lockable mechanism 10 can be made like this to lose efficacy, to need to realize showing and swinging back of oscillating support leg 20 according to operation.
Above-described embodiment is in specific implementation process, in order to reduce the friction force between dead bolt 2 and lock housing 1, preferably, the body outer diameter of dead bolt 2 can be made to be less than the internal diameter (namely installing the diameter of passage 11) of lock housing 1, and multiple slide protrusion portion 22 is set on dead bolt 2, dead bolt 2 is by this lock slide protrusion portion 22 and lock housing 1 bearing fit, two slide protrusion portions 22 have been shown in Fig. 2, wherein, near the side in the slide protrusion portion 22 of installing in the middle part of passage 11 also as elastic component 11(spring) step supporting surface, the other end of elastic component 11 is held on the inner end surface of lock housing 1.In addition, in order to reduce friction force further, improving the life-span, can run through in the wall portion of lock housing 1 and lubrication channel is set, lubricator cup 7 is set in the outer end of this lubrication channel.
In above-described embodiment and optimal way thereof, in order to ensure the stability of motion of dead bolt 2 and provide directional tagging for the movement of dead bolt 2, the other end 21 slip of dead bolt 2 is arranged in the lock housing end-face hole installing passage 11 (see Fig. 2), in other embodiments, dead bolt 2 also only can be positioned at and install passage 11.
In above-mentioned various embodiment, lockable mechanism 10 is provided with lever 4 and corresponding stroke passage 12 and limited mouth 4, to realize the convenience at operation field, but in some other embodiment, also these features can be omitted as required, and by lock housing 1, dead bolt 2 and elastic component 3 can realize the locking of oscillating support leg 20, in this case, as required a pulling mechanism can be set for dead bolt 2, for by pulling dead bolt 2 to make it be in retracted mode, to realize the releasing locked, in other other embodiments, then can omit elastic component 3 further, stretching out and being retracted through above-mentioned pulling mechanism of dead bolt 2 realizes.
In above-mentioned various embodiment, oscillating support leg 20 and telescopic outrigger 30 are provided with first lock section 201 and second lock section 202 of being with lockhole simultaneously, but in other embodiments, first lock section of band lockhole also can be only set as required on oscillating support leg 20, and omit the second lock section 202 of band lockhole, so also can realize preventing oscillating support leg 20 from outwards showing in transportation.
In above-mentioned various embodiment, external part 24 due to dead bolt 2 is provided with touching guiding surface 24, first lock section 201 or the first lock section 201 and the second lock section 301 can be inserted it in lockhole by touching dead bolt 2, but in other embodiments, also above-mentioned touching guiding surface 24 can be omitted as required, and the contact surface of the first lock section 201 or the first lock section 201 and the second lock section 301 is arranged to form an angle with the plane of oscillation shape of oscillating support leg 20 (such as, this angle is substantially equal with the oblique angle of touching guiding surface 24), so also can realize by touching, dead bolt 2 being inserted in lockhole.
In above-mentioned various embodiment, lock housing 1 is fixed on vehicle frame 40 by bearing 5, and bearing 5 is provided with cushion rubber 6, with reduce oscillating support leg 20 pairs of vehicle frames 40 impact, prevent oscillating support leg 20 overswing, but cushion rubber 6 also can be omitted as required in other embodiments, in this case, lock housing 1 also can be directly fixed on vehicle frame 40.
It should be noted that, the supporting leg lockable mechanism described in above-mentioned various embodiment can be applied to the construction machinery and equipment that car hosit, concrete pump truck etc. have oscillating support leg.
To sum up, a kind of supporting leg locking structure that the embodiment of the present invention provides, the locking of oscillating support leg and telescopic outrigger and vehicle frame can be realized, avoid stretching out in transportation at oscillating support leg, eliminate potential safety hazard, it also avoid telescopic outrigger and stretch out because the operation order of operating personal is wrong and improper, prevent periphery to walk platen to be damaged, in addition, also effectively reduce oscillating support leg when backswing to the impact that vehicle frame causes, and avoid the generation of overswing phenomenon.
The embodiment of the present invention additionally provides a kind of construction machinery and equipment, as car hosit, this project machinery is provided with the supporting leg locking structure described in above-described embodiment, because above-mentioned supporting leg locking structure has above-mentioned technique effect, therefore, this project machinery also should possess corresponding technique effect, and the specific implementation process of its appropriate section is similar to the above embodiments, does not hereby repeat.
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 (9)
1. a supporting leg locking structure, for the oscillating support leg (20) on locking vehicle frame (40), is characterized in that:
Described supporting leg locking structure comprises lockable mechanism (10), described lockable mechanism (10) comprises lock housing (1) and is set in the dead bolt (2) in described lock housing (1) movably, described lock housing (1) is fixedly arranged on described vehicle frame (40), and the external part (23) of described dead bolt (2) is towards the plane of oscillation of described oscillating support leg (20);
Described supporting leg locking structure also comprises the first lock section (201) being fixedly arranged on described oscillating support leg (20), described first lock section (201) is provided with the first lockhole, and the external part (23) of described dead bolt (2) can insert in described first lockhole when described oscillating support leg (20) backswing;
Telescopic outrigger (30) is provided with in described oscillating support leg (20);
Described supporting leg locking structure also comprises the second lock section (301) being arranged at described telescopic outrigger (30), described second lock section (301) is provided with the second lockhole, and described second lockhole is relative with described first lockhole when described telescopic outrigger (20) is in retracted mode;
The external part (23) of described dead bolt (2) can insert in described first lockhole and described second lockhole when described oscillating support leg (20) backswing.
2. supporting leg locking structure as claimed in claim 1, is characterized in that:
Described lockable mechanism (10) also comprises the elastic component (3) described dead bolt (2) being remained on the state of stretching out;
Described first lock section (201) can be touched the external part (23) of described dead bolt (2) when described oscillating support leg (20) backswing and insert it in described first lockhole.
3. supporting leg locking structure as claimed in claim 2, is characterized in that: the external part (23) of described dead bolt (2) is provided with touching guiding surface (24).
4. the supporting leg locking structure as described in any one of claims 1 to 3, is characterized in that:
Described lockable mechanism also comprises bearing (5), and described lock housing (1) is fixed on described bearing (5), and described bearing (5) is fixedly installed on described vehicle frame (40);
Described bearing (5) is positioned at described oscillating support leg backswing position and is provided with cushion rubber (6).
5. the supporting leg locking structure as described in any one of claims 1 to 3, is characterized in that:
The wall portion of described lock housing (1) runs through and is provided with connected stroke passage (12) and limited mouth (13);
Described lockable mechanism (10) also comprises lever (4), one end of described lever (4) is fixed on described dead bolt (2), and the other end stretches out described stroke passage (12) or limited mouth (13) outward;
Described lever (4) can move to described limited mouth (13) along described stroke passage (12), and when moving to described limited mouth (13), described dead bolt (2) is in retracted mode.
6. the supporting leg locking structure as described in any one of claims 1 to 3, it is characterized in that: the external diameter of described dead bolt (2) is less than the internal diameter of described lock housing (1), and described dead bolt (2) is provided with slide protrusion portion (22), described dead bolt (2) is arranged in described lock housing (1) by the slip of described slide protrusion portion (22).
7. the supporting leg locking structure as described in any one of claims 1 to 3, is characterized in that: the wall portion of described lock housing (1) runs through and is provided with lubrication channel, and the outer end of described lubrication channel is provided with lubricator cup (7).
8. a construction machinery and equipment, is characterized in that: described construction machinery and equipment is provided with the supporting leg locking structure described in any one of claim 1 to 7.
9. construction machinery and equipment as claimed in claim 8, is characterized in that: described construction machinery and equipment is hoisting crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351538.8A CN102887133B (en) | 2012-09-20 | 2012-09-20 | Supporting leg locking structure and construction machinery and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351538.8A CN102887133B (en) | 2012-09-20 | 2012-09-20 | Supporting leg locking structure and construction machinery and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102887133A CN102887133A (en) | 2013-01-23 |
| CN102887133B true CN102887133B (en) | 2015-09-02 |
Family
ID=47530874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210351538.8A Active CN102887133B (en) | 2012-09-20 | 2012-09-20 | Supporting leg locking structure and construction machinery and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102887133B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2253195A (en) * | 1991-02-23 | 1992-09-02 | Cartwright Freight Sys Ltd | Vehicle supports |
| CN2789086Y (en) * | 2005-04-30 | 2006-06-21 | 徐州重型机械有限公司 | Concrete pump vehicle supporting locking device |
| CN201511943U (en) * | 2009-09-17 | 2010-06-23 | 徐州重型机械有限公司 | Engineering machine and support leg locking device thereof |
| CN201842064U (en) * | 2010-11-10 | 2011-05-25 | 徐工集团工程机械股份有限公司建设机械分公司 | Concrete device and leg locking device thereof |
| US7963506B1 (en) * | 2007-09-12 | 2011-06-21 | Linden Boyd Hultquist | Vehicle leveling apparatus |
| CN202283710U (en) * | 2011-09-21 | 2012-06-27 | 朱保全 | Pneumatic nail pulling gun |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040150148A1 (en) * | 2003-01-31 | 2004-08-05 | Penske Truck Leasing Co., L.P. | Support for automotive parts |
-
2012
- 2012-09-20 CN CN201210351538.8A patent/CN102887133B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2253195A (en) * | 1991-02-23 | 1992-09-02 | Cartwright Freight Sys Ltd | Vehicle supports |
| CN2789086Y (en) * | 2005-04-30 | 2006-06-21 | 徐州重型机械有限公司 | Concrete pump vehicle supporting locking device |
| US7963506B1 (en) * | 2007-09-12 | 2011-06-21 | Linden Boyd Hultquist | Vehicle leveling apparatus |
| CN201511943U (en) * | 2009-09-17 | 2010-06-23 | 徐州重型机械有限公司 | Engineering machine and support leg locking device thereof |
| CN201842064U (en) * | 2010-11-10 | 2011-05-25 | 徐工集团工程机械股份有限公司建设机械分公司 | Concrete device and leg locking device thereof |
| CN202283710U (en) * | 2011-09-21 | 2012-06-27 | 朱保全 | Pneumatic nail pulling gun |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102887133A (en) | 2013-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204283259U (en) | A kind of pipe-grabbing mechanical arm and automatic-discharging pipe device | |
| CN103043581B (en) | A kind of turntable inhibiting device, method and construction machinery and equipment | |
| US11498596B2 (en) | Draft gear, coupler and draft gear and railway train | |
| CN102887133B (en) | Supporting leg locking structure and construction machinery and equipment | |
| WO2018090648A1 (en) | Rail vehicle and pipeline protection device thereof | |
| CN103434950B (en) | Truss arm lengthening section and truss arm and crane provided with lengthening section | |
| CN204605904U (en) | A kind of constructional engineering vehicle | |
| CN106218965B (en) | A kind of cam eccentric reason face device | |
| CN106144811B (en) | Leveling device and the elevator for being equipped with the device | |
| CN204508034U (en) | Three grades of damping dust cars | |
| CN203819214U (en) | Support device and engineering machine | |
| CN102975728B (en) | A kind of method and mine U-shaped dump truck of mining two Catherine wheels discharging | |
| CN206437407U (en) | A kind of ground beam-and-rail | |
| CN204452455U (en) | Piggyback transport car | |
| CN203372279U (en) | Joint adjusting structure of baby stroller | |
| CN204628163U (en) | A kind of workover rig derrick driving lockable mechanism | |
| CN205854148U (en) | Rail engineering automobile Anti-side-turning device | |
| CN203175048U (en) | Concrete pump truck and fixing bracket thereof | |
| CN107775624A (en) | A kind of industrial robot conveying device | |
| CN202107456U (en) | Oil cylinder floating connection structure of telescopic boom | |
| CN204775434U (en) | Turn to traction system and tractor | |
| JP2012111398A (en) | Outrigger of working vehicle | |
| CN210391120U (en) | Folding type guide wheel of straddle type single-rail contact rail operation platform | |
| CN204605759U (en) | A kind of supporting leg lock assembly and construction machinery and equipment | |
| CN202138266U (en) | Cantilever crane type engineering machine and telescopic boom thereof |
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 |