CN203998795U - Support leg device and there is the construction machinery and equipment of support leg device - Google Patents
Support leg device and there is the construction machinery and equipment of support leg device Download PDFInfo
- Publication number
- CN203998795U CN203998795U CN201420399796.8U CN201420399796U CN203998795U CN 203998795 U CN203998795 U CN 203998795U CN 201420399796 U CN201420399796 U CN 201420399796U CN 203998795 U CN203998795 U CN 203998795U
- Authority
- CN
- China
- Prior art keywords
- housing
- fixed part
- support leg
- leg device
- piston cylinder
- 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.)
- Expired - Fee Related
Links
Landscapes
- Actuator (AREA)
Abstract
The utility model provides a kind of support leg device and has had the construction machinery and equipment of support leg device.Wherein support leg device comprises: piston cylinder, and piston cylinder has first end and the second end; The first housing, it is outer and relative fixing with the first end of piston cylinder that the first housing is set in piston cylinder; And second housing, it is outer and relative fixing with the second end of piston cylinder that the second housing is set in piston cylinder; Support leg device also comprises connection structure, and connection structure is connected between the first housing and the second housing, and connection structure is flexibly connected with at least one in the first housing and the second housing, and the relative position between the first housing and the second housing is adjustable continuously.The technical solution of the utility model can make support leg device adapt to well ground, improves the reliability of support leg device carrying.
Description
Technical field
The utility model relates to engineering machinery field, in particular to a kind of support leg device and have the construction machinery and equipment of support leg device.
Background technology
At construction machinery and equipment and special engineered vehicular field, hydraulic ram is common supporting construction.The multiple advantage such as that hydraulic ram has is easy to adjust, simple to operate, can automatically control.But use after a period of time, due to hydraulic efficiency pressure system " inside letting out ", tend to cause " soft leg " phenomenon of hydraulic ram, hydraulic ram cannot keep a fixing length, can shorten gradually, and then have influence on the balance of car load, cause potential safety hazard.And hydraulic ram can not bear side force substantially, like this, running into the occasion that can be subject to side force in working process, the use of hydraulic ram is just restricted.
In order to overcome the problems referred to above, available technology adopting be the mode that installs supporting leg shell in the outside of hydraulic ram additional.In conjunction with referring to Fig. 1 and Fig. 2, for the schematic diagram of existing a kind of support leg device that has installed supporting leg shell additional, wherein supporting leg shell comprises the first housing 1 ' and the second housing 2 ', the first housing 1 ' is fixedly connected with the first end of piston cylinder 3 ', the second housing 2 ' is fixedly connected with the second end of piston cylinder 3 ', in the time that piston cylinder 3 ' is flexible, drive the relative position between the first housing 1 ' and the second housing 2 ' to adjust.On the first housing 1 ' and the second housing 2 ', offer respectively corresponding knock hole 6 ', while needing the extension elongation of locked piston cylinder 3 ', by the 6 ' alignment of the knock hole of the knock hole 6 ' of the first housing 1 ' and the second housing 2 ', then wear into locating dowel pin 5 '.In working process, born the load of piston cylinder 3 ' axis direction and radial direction by locating dowel pin 5 ', alleviate the working load of piston cylinder 3 '.
This knock hole coordinates locked structure with locating dowel pin, owing to having interval between each knock hole, and the size at interval has unified standard, so the extended position of piston cylinder can be subject to the restriction of position of positioning hole, substantially a construction machinery and equipment is in the time of operation, and the extension elongation of each supporting leg is roughly the same.But in a lot of situations, the ground of camp site is all rough, in the situation that all supporting leg extension elongations are identical, must have part supporting leg cannot adapt with floor level, and then affects balance and the safety of complete machine.
Utility model content
The utility model aims to provide a kind of support leg device and has the construction machinery and equipment of support leg device, can make support leg device adapt to well ground, improves the reliability of support leg device carrying.
To achieve these goals, according to an aspect of the present utility model, provide support leg device, this support leg device comprises: piston cylinder, and piston cylinder has first end and the second end; The first housing, it is outer and relative fixing with the first end of piston cylinder that the first housing is set in piston cylinder; And second housing, it is outer and relative fixing with the second end of piston cylinder that the second housing is set in piston cylinder; Support leg device also comprises connection structure, and connection structure is connected between the first housing and the second housing, and connection structure is flexibly connected with at least one in the first housing and the second housing, and the relative position between the first housing and the second housing is adjustable continuously.
Further, connection structure comprises: the first fixed part, and the first fixed part is fixed on the first housing; The second fixed part, the second fixed part is fixed on the second housing; Connecting portion, connecting portion is connected between the first fixed part and the second fixed part, and connecting portion is flexibly connected with at least one in the first fixed part and the second fixed part; And lock part, lock part, under lockup state, makes relative with connecting portion fixing with the first fixed part and/or second fixed part of connecting portion flexible connection.
Further, connecting portion is connecting rod, and connecting rod is located on the first fixed part and the second fixed part, and connecting rod can arrange with axial motion with respect to the first fixed part.
Further, connecting rod has external thread section, and lock part comprises the first nut, the external thread section screw thread fit of the first nut and connecting rod, and under lockup state, the first nut forms and coordinates along the axial backstop of connecting rod with the first fixed part.
Further, connecting rod can arrange with axial motion with respect to the second fixed part.
Further, lock part also comprises the second nut, the external thread section screw thread fit of the second nut and connecting rod, and under lockup state, the second nut forms and coordinates along the axial backstop of connecting rod with the second fixed part.
Further, one in the first housing and the second housing has guide groove, and another in the first housing and the second housing has slide block, and guide groove extends axially along piston cylinder, and slide block is arranged in guide groove movingly along the bearing of trend of guide groove.
Further, the first housing is set in outside the second housing, and guide groove is arranged on the inner side of the first housing, and slide block is arranged on the outside of the second housing.
According on the other hand of the present utility model, a kind of construction machinery and equipment with support leg device is provided, support leg device is above-mentioned support leg device.
Application the technical solution of the utility model, by connection structure being set between the first housing at connection piston rod two ends and the second housing, and the first housing is flexibly connected with this connection structure with at least one in the second housing, makes the relative position between the first housing and the second housing adjustable continuously; When piston cylinder reaches arbitrary distance of run, can both pass through locked the first housing of connection structure and the second housing, making between the two cannot relative motion, increase the comformability of support leg device for Different Ground height, substantially born by connection structure along the load of piston cylinder axis direction simultaneously, avoid, owing to letting out the problem that the support leg device that causes can not fine bearing load in piston cylinder, having improved the reliability of support leg device carrying.
Brief description of the drawings
The Figure of description that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows according to the front view of the support leg device of prior art;
Fig. 2 shows the left view according to Fig. 1;
Fig. 3 shows the schematic diagram that stretches out state according to the support leg device of embodiment of the present utility model;
Fig. 4 shows according to the A-A of Fig. 3 to cutaway view;
Fig. 5 shows the B place enlarged drawing according to Fig. 4; And
Fig. 6 shows according to the schematic diagram of the support leg device retracted mode of embodiment of the present utility model.
Description of reference numerals: 1, the first housing; 11, the first cylindrical shell; 12, the first end cap; 13, guide groove; 2, the second housing; 21, the second cylindrical shell; 22, the second end cap; 23, slide block; 3, piston cylinder; 31, first end; 32, the second end; 4, connection structure; 41, the first fixed part; 42, the second fixed part; 43, connecting rod; 44, the first nut; 45, the second nut; 46, reinforced rib.
Detailed description of the invention
Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.
As shown in Figures 3 to 6, according to embodiment of the present utility model, provide a kind of support leg device.In conjunction with referring to Fig. 3, support leg device comprises piston cylinder 3, the first housing 1, the second housing 2 and connection structure 4, wherein piston cylinder 3 has relative first end 31 and the second end 32, along with stretching of piston cylinder 3, the corresponding adjustment of distance between first end 31 and the second end 32, it is outer and relative fixing with the first end 31 of piston cylinder 3 that the first housing 1 is set in piston cylinder 3, it is outer and relative fixing with the second end 32 of piston cylinder 3 that the second housing 2 is set in piston cylinder 3, make the flexible of piston cylinder 3 can drive the relative position between the first housing 1 and the second housing 2 to adjust, connection structure 4 is connected between the first housing 1 and the second housing 2, and connection structure 4 is flexibly connected with at least one in the first housing 1 and the second housing 2, in the time that the relative position between the first housing 1 and the second housing 2 is adjusted, this adjustment process is continuous.
Because the relative position between the first housing 1 and the second housing 2 is adjustable continuously, can be by connection structure 4 by locked its machinery while making piston cylinder 3 reach optional position, the stroke of piston cylinder 3 is unrestricted, support leg device can adapt to the height on ground better, guarantees balance and the safety of complete machine; Meanwhile, the axial force that piston cylinder 3 is subject to is transferred in connection structure 4, when efficiently solving piston cylinder 3 and working long hours, due to the interior problem of letting out the support leg device that causes can not fine support carload, has improved the reliability of support leg device carrying.
The first end 31 here and the second end 32 refer to respectively the piston rod outer end of piston cylinder 3 and the cylinder bottom end of piston cylinder 3, if using the outer end of piston rod as first end 31, the cylinder bottom end of piston cylinder 3 is as the second end 32; If using the cylinder bottom end of piston cylinder 3 as first end 31, the outer end of piston rod is as the second end 32.
The outer end of above-mentioned piston rod refers to the end outside cylinder barrel that is positioned at of piston rod; The cylinder bottom end of piston cylinder 3 refers to the end away from piston rod of cylinder barrel.
The first housing 1 is relative fixing with the first end 31 of piston cylinder 3, can be specifically that the first housing 1 is directly fixedly connected with the first end 31 of piston cylinder 3, the first end 31 that can be also piston cylinder 3 is fixed on the first housing 1 by other structures, for example, be fixed on the first housing 1 by mount pad.
Preferably, the first housing 1 comprises the first cylindrical shell 11 and the first end cap 12, wherein the first end cap 12 is fixed on the end of the second housing 2 dorsad of the first cylindrical shell 11, the first end 31 of piston cylinder 3 be fixed on the first end cap 12 on the medial surface of the first cylindrical shell 11 inside.The first end cap 12 and the first cylindrical shell 11 can be that one machine-shaping can be also split-type structural.
The second housing 2 is relative fixing with the second end 32 of piston cylinder 3, can be specifically that the second housing 2 is directly fixedly connected with the second end 32 of piston cylinder 3, second end 32 that can be also piston cylinder 3 is fixed on the second housing 2 by other structures, for example, be fixed on the first housing 1 by mount pad.
Preferably, the second housing 2 comprises the second cylindrical shell 21 and the second end cap 22, wherein the second end cap 22 is fixed on the end of the first housing 1 dorsad of the second cylindrical shell 21, and the second end cap 22 and the first end cap 12 are oppositely arranged, the second end 32 of piston cylinder 3 be fixed on the second end cap 22 on the medial surface of the second cylindrical shell 21 inside.The second end cap 22 and the second cylindrical shell 21 can be that one machine-shaping can be also split-type structural.
Preferably, connection structure 4 comprises the first fixed part 41, the second fixed part 42, connecting portion and lock part, wherein the first fixed part 41 is fixed on the first housing 1, the second fixed part 42 is fixed on the second housing 2, relative position between the first fixed part 41 and the second fixed part 42 is adjusted along with the adjustment of the relative position of the first housing 1 and the second housing 2, connecting portion is connected between the first fixed part 41 and the second fixed part 42, the first housing 1 and the second housing 2 are coupled together, and connecting portion is flexibly connected with at least one in the first fixed part 41 and the second fixed part 42, need to pin the relative position of the first housing 1 and the second housing 2 time, utilize lock part to make relative with connecting portion fixing with the first fixed part 41 and/or second fixed part 42 of movable part flexible connection, the axial force that piston cylinder 3 is subject to is transferred on connecting portion and lock part, alleviate the axial working load of piston cylinder 3.
Above-mentioned connecting portion is flexibly connected with at least one in the first fixed part 41 and the second fixed part 42 the following three kinds of situations that comprise:
The first, connecting portion is flexibly connected with the first fixed part 41, relative fixing with the second fixed part 42, and when piston cylinder 3 stretches out, connecting portion and the first fixed part 41 produce relative motion, and under lockup state, lock part makes the first fixed part 41 relative with connecting portion fixing.
The second, connecting portion is flexibly connected with the second fixed part 42, relative fixing with the first fixed part 41, and when piston cylinder 3 stretches out, connecting portion and the second fixed part 42 produce relative motion, and under lockup state, lock part makes the second fixed part 42 relative with connecting portion fixing.
The third, connecting portion is flexibly connected with the first fixed part 41 and the second fixed part 42 respectively, when piston cylinder 3 stretches out, connecting portion produces relative motion respectively and between the first fixed part 41 and the second fixed part 42, under lockup state, lock part makes respectively the first fixed part 41 relative with connecting portion fixing with the second fixed part 42.
Further preferably, connecting portion is connecting rod 43, the first fixed part 41 and the second fixed part 42 have respectively the axially extended through hole along piston cylinder 3, connecting rod 43 is located in respectively in the through hole of the first fixed part 41 and the through hole of the second fixed part 42, connecting rod 43 is flexibly connected with at least one in the first fixed part 41 and the second fixed part 42, be that connecting rod 43 can be with respect to the first fixed part 41 axial motions, or can be with respect to the second fixed part 42 axial motions, or can axially move respectively with respect to the first fixed part 41 and the second fixed part 42, lock part is arranged on connecting rod 43.
In order to facilitate the locking operation of lock part, preferably, lock part is nut, and connecting rod 43 has the external thread section coordinating with nut thread, and for simplified structure, connecting rod 43 can be selected double end stud.Locked by nut, can avoid the impact of live load on support leg device in car load operational process, be also conducive to change the connecting rod 43 damaging.
Situation about being flexibly connected with the first fixed part 41 for connecting rod 43, nut comprises first negative thread of nut 44, the first nuts 44 and the external thread section screw thread fit of connecting rod 43.Under lockup state, the first nut 44 forms along the axial backstop of connecting rod 43 and coordinates with the first fixed part 41, prevents that connecting rod 43 and the first fixed part 41 from producing relative motion.
Situation about being flexibly connected with the second fixed part 42 for connecting rod 43, nut comprises second negative thread of nut 45, the second nuts 45 and the external thread section screw thread fit of connecting rod 43.Under lockup state, the second nut 45 forms along the axial backstop of connecting rod 43 and coordinates with the second fixed part 42, prevents that connecting rod 43 and the second fixed part 42 from producing relative motion.
Situation about being flexibly connected respectively with the first fixed part 41 and the second fixed part 42 for connecting rod 43, nut comprises the first nut 44 and the second nut 45, the negative thread of the first nut 44 and the second nut 45 respectively with the external thread section screw thread fit of connecting rod 43, under lockup state, the first nut 44 forms along the axial backstop of connecting rod 43 and coordinates with the first fixed part 41, prevent that connecting rod 43 and the first fixed part 41 from producing relative motion, the second nut 45 forms along the axial backstop of connecting rod 43 and coordinates with the second fixed part 42, prevents that connecting rod 43 and the second fixed part 42 from producing relative motion.
Certainly, the connecting rod 43 is here not limited to screw rod, can be also other rod shaped structure, for example ganoid polished rod, and correspondingly, the structure of the structure of lock part and connecting rod 43 adapts, to facilitate locking operation.For example, in the situation that connecting rod 43 is polished rod, lock part is selected clamping element, and under lockup state, clamping element is clamped on polished rod tightly, prevents the motion with respect to connecting rod 43 of the first fixed part 41 and/or the second fixed part 42.
In conjunction with referring to Fig. 4, in order to improve the intensity of the second fixed part 42, preferably, between the second fixed part 42 and the second cylindrical shell 21, be provided with reinforced rib 46, a side of reinforced rib 46 is fixedly connected with the second fixed part 42, another side is fixedly connected with the lateral surface of the second cylindrical shell 21, prevents the stressed flexural deformation of the second fixed part 42.
In conjunction with referring to Fig. 4 and Fig. 5, generally, support leg device does not tolerate side force, therefore, in order to alleviate the lateral loading of support leg device, improve the comformability of support leg device, preferably, between the first housing 1 and the second housing 2, be provided with guide frame, guide frame for example can be arranged on the guide groove 13 on the first housing 1 and be arranged on the slide block 23 on the second housing 2, guide groove 13 extends axially along piston cylinder 3, and slide block 23 is embedded in guide groove 13, and can move along the bearing of trend of guide groove 13.Guide groove 13 both can play directional tagging with coordinating of slide block 23, can overcome well again piston cylinder 3 radial weights, improves the reliability of support leg device carrying.
Because the first housing 1 is set in outside the second housing 2, thus in order to save space, further preferably, guide groove 13 be arranged on the first housing 1 towards the inner side of the second housing 2, slide block 23 is arranged on the outside towards the first housing 1 of the second housing 2.
Certainly, guide groove 13 also can be arranged on the second housing 2, and slide block 23 also can be arranged on the first housing 1, can play equally guiding and improve the effect that support leg device bears radial capacity.
In conjunction with referring to Fig. 3 and Fig. 6, relative with connecting rod 43 fixing with the second fixed part 42 below, only have the first fixed part 41 to be flexibly connected as example with connecting rod 43, the principle of work of support leg device is elaborated.
Off working state.In conjunction with referring to Fig. 6, piston cylinder 3 does not stretch out, and the first housing 1 is relative static with the second housing 2, by the second nut 45 by locked the second fixed part 42 on connecting rod 43.
Off working state is switched to mode of operation.Unclamp the first nut 44, cancel the restriction to the second fixed part 42 and connecting rod 43, piston cylinder 3 stretches out, drive the second housing 2 to move down together with pipe link, relative the first fixed part 41 of connecting rod 43 axially moves, and slide block 23 slides in guide groove 13 simultaneously, in the time that support leg device extend out to appropriate length, piston cylinder 3 stop action, with the first nut 44 by locked the first fixed part 41 on connecting rod 43, formation Fig. 3 shown in state.In the time that equipment is worked, the load of vertical direction is born by connecting rod 43, and oil cylinder does not stress, and the load of horizontal direction is born by coordinating between slide block 23 and guide groove 13.
Mode of operation switches to off working state.The first nut 44 is unclamped, and piston cylinder 3 is retracted, and the second housing 2 moves up with piston cylinder 3 together with connecting rod 43, until form the state shown in Fig. 6.
The utility model also provides a kind of construction machinery and equipment with support leg device, and this support leg device is aforesaid support leg device.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
1, adopt the locked mode of machinery, when efficiently solving piston cylinder 3 and working long hours, let out due to interior the problem that the support leg device that causes can not finely bear equipment load.
2, realized and when piston cylinder 3 extend out to arbitrary distance of run, can adopt the locked mode of machinery locked and can not affect the stressed of support leg device, improved the practicality of support leg device.
3, by nut by locked on connecting rod 43 to the first fixed part 41 and/or the second fixed part 42, avoided the impact of live load on support leg device in equipment running process, be also conducive to change damage connecting rod 43.
4, directional tagging can be played well by slide block 23 and guide groove 13, the not problem of tolerance level load of support leg device can be solved again.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. a support leg device, comprising:
Piston cylinder (3), described piston cylinder (3) has first end (31) and the second end (32);
The first housing (1), it is outer and relative fixing with the described first end (31) of described piston cylinder (3) that described the first housing (1) is set in described piston cylinder (3); And
The second housing (2), it is outer and relative fixing with described second end (32) of described piston cylinder (3) that described the second housing (2) is set in described piston cylinder (3);
It is characterized in that, described support leg device also comprises connection structure (4), described connection structure (4) is connected between described the first housing (1) and described the second housing (2), and described connection structure (4) is flexibly connected with at least one in described the first housing (1) and described the second housing (2), and the relative position between described the first housing (1) and described the second housing (2) is adjustable continuously.
2. support leg device according to claim 1, is characterized in that, described connection structure (4) comprising:
The first fixed part (41), described the first fixed part (41) is fixed on described the first housing (1);
The second fixed part (42), described the second fixed part (42) is fixed on described the second housing (2);
Connecting portion, described connecting portion is connected between described the first fixed part (41) and described the second fixed part (42), and described connecting portion is flexibly connected with at least one in described the first fixed part (41) and described the second fixed part (42); And
Lock part, described lock part, under lockup state, makes relative with described connecting portion fixing with described the first fixed part (41) and/or described second fixed part (42) of described connecting portion flexible connection.
3. support leg device according to claim 2, it is characterized in that, described connecting portion is connecting rod (43), described connecting rod (43) is located in described the first fixed part (41) and described the second fixed part (42) is upper, and described connecting rod (43) can arrange with axial motion with respect to described the first fixed part (41).
4. support leg device according to claim 3, it is characterized in that, described connecting rod (43) has external thread section, described lock part comprises the first nut (44), the described external thread section screw thread fit of described the first nut (44) and described connecting rod (43), under described lockup state, described the first nut (44) forms and coordinates along the axial backstop of described connecting rod (43) with described the first fixed part (41).
5. support leg device according to claim 4, is characterized in that, described connecting rod (43) can arrange with axial motion with respect to described the second fixed part (42).
6. support leg device according to claim 5, it is characterized in that, described lock part also comprises the second nut (45), the described external thread section screw thread fit of described the second nut (45) and described connecting rod (43), under described lockup state, described the second nut (45) forms and coordinates along the axial backstop of described connecting rod (43) with described the second fixed part (42).
7. according to the support leg device described in any one in claim 1 to 6, it is characterized in that, one in described the first housing (1) and described the second housing (2) has guide groove (13), another in described the first housing (1) and described the second housing (2) has slide block (23), described guide groove (13) extends axially along described piston cylinder (3), and described slide block (23) is arranged in described guide groove (13) movingly along the bearing of trend of described guide groove (13).
8. support leg device according to claim 7, it is characterized in that, described the first housing (1) is set in outside described the second housing (2), described guide groove (13) is arranged on the inner side of described the first housing (1), and described slide block (23) is arranged on the outside of described the second housing (2).
9. a construction machinery and equipment with support leg device, is characterized in that, described support leg device is the support leg device described in any one in claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420399796.8U CN203998795U (en) | 2014-07-18 | 2014-07-18 | Support leg device and there is the construction machinery and equipment of support leg device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420399796.8U CN203998795U (en) | 2014-07-18 | 2014-07-18 | Support leg device and there is the construction machinery and equipment of support leg device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203998795U true CN203998795U (en) | 2014-12-10 |
Family
ID=52038826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420399796.8U Expired - Fee Related CN203998795U (en) | 2014-07-18 | 2014-07-18 | Support leg device and there is the construction machinery and equipment of support leg device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203998795U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107651623A (en) * | 2017-09-15 | 2018-02-02 | 苏州苏试试验集团股份有限公司 | A kind of elevating mechanism of lifting frame |
-
2014
- 2014-07-18 CN CN201420399796.8U patent/CN203998795U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107651623A (en) * | 2017-09-15 | 2018-02-02 | 苏州苏试试验集团股份有限公司 | A kind of elevating mechanism of lifting frame |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203994197U (en) | A kind of edge-on ingot stripper, Mo Tai and precast concrete production system | |
| CN103527558B (en) | A kind of telescopic oil cylinder support means and engineering machinery | |
| CN108350859A (en) | Guiding equipment for assembling wind turbine tower | |
| CN205273653U (en) | Scalable caterpillar base plate | |
| CN203998795U (en) | Support leg device and there is the construction machinery and equipment of support leg device | |
| CN103603844A (en) | Single-cylinder pin type telescopic cylinder, telescopic arm and engineering machine equipment | |
| CN202574162U (en) | Cantilever crane supporting device and engineering machine | |
| CN103395410B (en) | Telescopic outrigger and there is its concrete pump truck | |
| CN203189389U (en) | Fixing structure of hydraulic oil cylinder guide sleeves and baffle rings | |
| CN104057927A (en) | Hydraulic supporting leg structure and movable type crusher | |
| CN103303269A (en) | Extension and retraction mechanism and support leg extension and retraction system for concrete pump truck | |
| CN205294674U (en) | Bolt connection structure, cantilever crane and hoist | |
| CN201747270U (en) | Longitudinal beam oil cylinder support lug structure of caterpillar rotary drilling rig | |
| CN203532398U (en) | Crane, suspension device of crane and suspension oil cylinder of crane | |
| CN103557015A (en) | Multi-expansion hydraulic support column | |
| CN203548414U (en) | Telescopic oil cylinder support device and engineering machinery | |
| CN207746638U (en) | A kind of clamping tooling of automobile pipe fitting flange pressing machine | |
| CN103410806B (en) | A kind of hoist and draft hitch, hanging oil cylinder | |
| CN102767339B (en) | A kind of adjustable hydraulic support leg device | |
| CN204213099U (en) | A kind of telescopic oil cylinder structure and there is its engineering machinery | |
| CN104057862B (en) | Arm body retaining mechanism and side Self-loading-unloading transport vehicle | |
| CN103273989A (en) | Supporting device for assembling chassis | |
| CN202518244U (en) | Telescoping mechanism and concrete pump car support leg telescoping system | |
| CN204161324U (en) | A kind of construction machinery and equipment and supporting leg | |
| CN203603501U (en) | Concrete pump truck |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160718 |