CN105480897B - A kind of rack-and-pinion elevating mechanism - Google Patents
A kind of rack-and-pinion elevating mechanism Download PDFInfo
- Publication number
- CN105480897B CN105480897B CN201511029192.XA CN201511029192A CN105480897B CN 105480897 B CN105480897 B CN 105480897B CN 201511029192 A CN201511029192 A CN 201511029192A CN 105480897 B CN105480897 B CN 105480897B
- Authority
- CN
- China
- Prior art keywords
- gear
- elevating mechanism
- oil cylinder
- housing
- mounting bracket
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
- B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F2700/00—Lifting apparatus
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a kind of rack-and-pinion elevating mechanism, belong to jacking equipment technical field.The elevating mechanism includes：Climbing gear, rack, gear-box and mounting bracket, climbing gear is coaxially mounted on the output shaft of gear-box, the output shaft of gear-box is inserted into mounting bracket, climbing gear engages with rack, elevating mechanism also includes load detection components, load detection components include cantilever, the sensor of oil cylinder and the internal pressure for detecting oil cylinder, one end of cantilever is fixedly connected with the housing of gear-box, the other end of cantilever and the top of oil cylinder are hinged, the bottom of oil cylinder is hinged with mounting bracket, the side wall of mounting bracket is provided with installation set, installation set includes limiting plate, bearing holder (housing, cover) and bearing, the top of output shaft is provided with the stop flange being engaged with limiting plate, output shaft is inserted into installation set, bearing holder (housing, cover) is arranged on the outside of limiting plate, bearing holder (housing, cover) is on output shaft, bearing is located among limiting plate and stop flange.Present invention reduces the difficulty of maintenance sensor.
Description
Technical field
The invention belongs to jacking equipment technical field, more particularly to a kind of rack-and-pinion elevating mechanism.
Background technology
Self-elevating ocean platform is a kind of common ocean engineering jacking equipment, and it is real by rack-and-pinion elevating mechanism
The lifting of existing platform and spud leg.Common rack-and-pinion elevating mechanism mainly includes climbing gear, rack, load transducer, leads to
Engaging for climbing gear and rack is crossed, to realize the lifting action of rack-and-pinion elevating mechanism, is held in rack-and-pinion elevating mechanism
While row lifting action, load transducer monitors the load suffered by rack-and-pinion elevating mechanism in real time.However, due to rising certainly
Formula ocean platform is chronically in severe working environment, causes load transducer to be extremely easily damaged, once load transducer
Damage, it is necessary to whole rack-and-pinion elevating mechanism is taken apart and changed, installation process is cumbersome, will expend substantial amounts of manpower
Material resources.
The content of the invention
In order to solve the problems, such as the load transducer maintenance difficult in existing rack-and-pinion elevating mechanism, the present invention is implemented
Example provides a kind of rack-and-pinion elevating mechanism.The technical scheme is as follows：
The embodiments of the invention provide a kind of rack-and-pinion elevating mechanism, the elevating mechanism includes：Climbing gear, tooth
Bar, gear-box and mounting bracket, the climbing gear are coaxially mounted on the output shaft of the gear-box, the output of the gear-box
Axle is inserted into the mounting bracket, and the climbing gear engages with the rack, and the elevating mechanism also includes load detection group
Part, the load detection components include cantilever, oil cylinder and the sensor for detecting the oil cylinder pressure, the cantilever
One end is fixedly connected with the housing of the gear-box, and the top of the other end of the cantilever and the oil cylinder is hinged, the oil cylinder
Bottom be hinged with the mounting bracket, the side wall of the mounting bracket is provided with installation set, and the installation set includes limiting plate, bearing
Set and bearing, the limiting plate is parallel to be fixedly mounted in the side wall of the mounting bracket, the top of the output shaft be provided with
The stop flange that the limiting plate is engaged, the output shaft are rotationally inserted into the installation set, and the bearing holder (housing, cover) is same
Axle is arranged on the outside of the limiting plate, and the coaxial bearing is sleeved on the output shaft, and the bearing is positioned at described spacing
Between plate and the stop flange.
In a kind of implementation of the present invention, the internal diameter of the limiting plate is less than the external diameter of the stop flange.
In another implementation of the present invention, the installation set also includes mounting flange, and the mounting flange is coaxial
The top of the bearing holder (housing, cover) is arranged on, the bearing holder (housing, cover) is arranged on the outside of the limiting plate by the mounting flange.
In another implementation of the present invention, the bearing holder (housing, cover) is externally provided with multiple stiffener plates, the multiple reinforcement
Periphery wall of the gusset along the bearing holder (housing, cover) circumferentially, each stiffener plate with the periphery wall of the bearing holder (housing, cover) and described
The side wall of mounting bracket is fixedly connected.
In another implementation of the present invention, the gear-box includes first input end and the second input, described
First input end and the second input arranged for interval, the first input end are used to connect with brake, and described second is defeated
Enter end to be used to connect with hydraulic motor.
In another implementation of the present invention, the position that the oil cylinder bottom is corresponded in the side wall of the mounting bracket is set
There is boss, the boss is vertically mounted in the side wall of the mounting bracket, and the bottom of the oil cylinder is hinged with the boss.
In another implementation of the present invention, lightening hole is provided with the cantilever.
In another implementation of the present invention, the load detection components also include shuttle valve, and the first of the shuttle valve
Input connects with the rod chamber of the oil cylinder, and the second input of the shuttle valve connects with the rodless cavity of the oil cylinder, described
The output end of shuttle valve connects with the sensor.
In another implementation of the present invention, the load detection components also include safety valve, the safety valve and
The rodless cavity connection of the oil cylinder.
In another implementation of the present invention, the gear-box is epicyclic gearbox.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：
By configuring climbing gear, rack, gear-box, mounting bracket and load detection components, load inspection in elevating mechanism
Surveying component includes the sensor of cantilever, oil cylinder and the internal pressure for detecting oil cylinder, and one end of cantilever and the housing of gear-box are fixed
Connection, the other end of cantilever and the top of oil cylinder are hinged, and bottom and the mounting bracket of oil cylinder are hinged, when spud leg and ground contact
When, under gravity, the load of platform is acted on rack by climbing gear, so that climbing gear is rotated
Moment of torsion, the moment of torsion is transferred to cantilever by climbing gear by the housing of gear-box, and cantilever acts on oil cylinder after obtaining moment of torsion, makes
Obtain sensor and detect the size of oil cylinder pressure, and then detect the load that climbing gear is born；When platform and ground
During contact, under gravity, the load of spud leg is acted on climbing gear by rack, so that climbing gear
The moment of torsion reversely rotated is obtained, the moment of torsion is transferred to cantilever by climbing gear by the housing of gear-box, after cantilever obtains moment of torsion
Acting on oil cylinder so that sensor detects the size of oil cylinder pressure, and then detects the load that climbing gear is born,
It is achieved thereby that the detection loaded to climbing gear, because load detection components are independently of elevating mechanism, so repairing
When need not dismantle whole elevating mechanism, so as to reduce maintenance sensor difficulty.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the overlooking the structure diagram of elevating mechanism provided in an embodiment of the present invention；
Fig. 2 is the main view partial perspective schematic view of elevating mechanism provided in an embodiment of the present invention；
Fig. 3 is the oil circuit schematic diagram of load detection components provided in an embodiment of the present invention；
Each symbol represents that implication is as follows in figure：
1- climbing gears, 2- racks, 3- gear-boxes, 31- output shafts, 32- housings, 33- stop flanges, 34- first are inputted
End, the inputs of 35- second, 4- mounting brackets, 41- installation sets, 42- limiting plates, 43- bearing holder (housing, cover)s, 44- bearings, 45- stiffener plates,
46- boss, 47- mounting flanges, 5- load detection components, 51- cantilevers, 52- oil cylinders, 53- sensors, 54- lightening holes, 55- shuttles
Valve, 56- safety valves, 6- spud legs, the rod chamber of a- oil cylinders, the rodless cavity of b- oil cylinders.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment
A kind of rack-and-pinion elevating mechanism provided in an embodiment of the present invention, as illustrated in fig. 1 and 2, elevating mechanism includes：Climb
Gear 1, rack 2, gear-box 3 and mounting bracket 4, climbing gear 1 are coaxially mounted on the output shaft 31 of gear-box 3, gear-box 3
Output shaft 31 is inserted into mounting bracket 4, and climbing gear 1 engages with rack 2, and elevating mechanism also includes load detection components 5, load
Detection components 5 include the sensor 53 of cantilever 51, oil cylinder 52 and the internal pressure for detecting oil cylinder 52, one end of cantilever 51 and gear
The housing 32 of case 3 is fixedly connected, and the top of the other end and oil cylinder 52 of cantilever 51 is hinged, and bottom and the mounting bracket 4 of oil cylinder 52 are cut with scissors
Connect, the side wall of mounting bracket 4 is provided with installation set 41, and installation set 41 includes limiting plate 42, bearing holder (housing, cover) 43 and bearing 44, limiting plate 42
Parallel to be fixedly mounted in the side wall of mounting bracket 4, the top of output shaft 31 is provided with the stop flange being engaged with limiting plate 42
33, output shaft 31 is rotationally inserted into installation set 41, and bearing holder (housing, cover) 43 is coaxially mounted to the outside of limiting plate 42, and bearing 44 is same
Axle sleeve is on output shaft 31, and bearing 44 is between limiting plate 42 and stop flange 33.
The present embodiment is detected by configuring climbing gear 1, rack 2, gear-box 3, mounting bracket 4 and load in elevating mechanism
Component 5, load detection components 5 include the sensor 53 of cantilever 51, oil cylinder 52 and the internal pressure for detecting oil cylinder 52, cantilever 51
One end is fixedly connected with the housing 32 of gear-box 3, and the top of the other end and oil cylinder 52 of cantilever 51 is hinged, the bottom of oil cylinder 52 with
Mounting bracket 4 is be hinged, and when spud leg 6 and ground contact, under gravity, the load of platform is made by climbing gear 1
With on rack 2, so that climbing gear 1 obtains the moment of torsion of rotation, shell of the climbing gear 1 by the moment of torsion by gear-box 3
Body 32 is transferred to cantilever 51, and cantilever 51 acts on oil cylinder 52 after obtaining moment of torsion so that sensor 53 detects that oil cylinder 52 is pressurized
The size of power, and then detect the load that climbing gear 1 is born；When platform and ground contact, in the effect of gravity
Under, the load of spud leg 6 is acted on climbing gear 1 by rack 2, so that climbing gear 1 obtains the moment of torsion reversely rotated,
The moment of torsion is transferred to cantilever 51 by climbing gear 1 by the housing 32 of gear-box 3, and cantilever 51 acts on oil cylinder after obtaining moment of torsion
52 so that sensor 53 detects the size of the pressure of oil cylinder 52, and then detects the load that climbing gear 1 is born, from
And the detection loaded to climbing gear 1 is realized, because load detection components 5 are independently of elevating mechanism, so repairing
When need not dismantle whole elevating mechanism, so as to reduce maintenance sensor 53 difficulty.
In above-mentioned implementation, gear-box 3 can be epicyclic gearbox.
In the present embodiment, the internal diameter of limiting plate 42 is less than the external diameter of stop flange 33, limiting plate 42 and stop flange 33
Cooperate with the axial displacement of limiting gear case 3.Preferably, the top of stop flange 33 and output shaft 31 is connected by bolt
Connect so that together with stop flange 33 is removably attachable to output shaft 31, consequently facilitating gear-box 3 is torn open out of mounting bracket 4
Unload down.
Specifically, bearing holder (housing, cover) 43 is used to position bearing 44, and bearing 44 is used for the radial displacement for limiting output shaft 31.It is preferred that
Ground, bearing 44 can be deep groove ball bearing, it is readily appreciated that, in other embodiments, the species of bearing 44 is not limited to
Preferred scheme is stated, can also be other species, the present invention is without limitation.
Specifically, installation set 41 also includes mounting flange 47, and mounting flange 47 is co-axially located at the top of bearing holder (housing, cover) 43, axle
Bearing sleeve 43 is arranged on the outside of limiting plate 42 by mounting flange 47.In above-mentioned implementation, it be able to will be fixed by bolt
Flange 47, bearing holder (housing, cover) 43 and limiting plate 42 are connected in turn, consequently facilitating dismounting bearing holder (housing, cover) 43.
Specifically, bearing holder (housing, cover) 43 is externally provided with multiple stiffener plates 45, periphery wall of multiple stiffener plates 45 along bearing holder (housing, cover) 43
Circumferentially, each stiffener plate 45 is fixedly connected with the periphery wall of bearing holder (housing, cover) 43 and the side wall of mounting bracket 4, stiffener plate 45
Support shaft bearing sleeve 43 can be played a part of.
In the present embodiment, gear-box 3 includes the input 35 of first input end 34 and second, first input end 34 and second
The arranged for interval of input 35, first input end 34 are used to connect with brake, and the second input 35 is used to connect with hydraulic motor,
It is coaxially disposed so as to avoid brake with hydraulic motor, and then reduces the axial dimension of gear-box 3, it is firm improves structure
Degree.Preferably, hydraulic motor can be axial piston motor.
In the present embodiment, the position that the bottom of oil cylinder 52 is corresponded in the side wall of mounting bracket 4 is provided with boss 46, and boss 46 is vertical
In the side wall of mounting bracket 4, the bottom of oil cylinder 52 and boss 46 are be hinged so that oil cylinder 52 is mobilizable to be arranged on mounting bracket
On 4, so as to the adaptive adjustment angle with the swing of cantilever 51.
Preferably, lightening hole 54 is provided with cantilever 51, to reduce the overall weight of load detection components 5, reduces peace
Shelve the load suffered by 4.
Referring to Fig. 3, in the present embodiment, load detection components 5 also include shuttle valve 55, first input end and the oil of shuttle valve 55
The rod chamber a connections of cylinder 52, the second input of shuttle valve 55 connect with the rodless cavity b of oil cylinder 52, the output end and biography of shuttle valve 55
Sensor 53 connects, so that sensor 53 can be detected simultaneously by the rod chamber a and rodless cavity b of oil cylinder 52 pressure, simplifies
The structures of load detection components 5.
Specifically, load detection components 5 also include safety valve 56, and safety valve 56 connects with the rodless cavity of oil cylinder 52, works as oil
When load suffered by cylinder 52 is more than setting value, safety valve 56 is opened, and the hydraulic oil overflow in the rodless cavity b of beam hanger is gone out, from
And make it that oil cylinder 52 shrinks, to play a part of protecting gear-box 3.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
1. a kind of rack-and-pinion elevating mechanism, the elevating mechanism include：Climbing gear, rack, gear-box and mounting bracket, it is described
Climbing gear is coaxially mounted on the output shaft of the gear-box, and the output shaft of the gear-box is inserted into the mounting bracket,
The climbing gear engages with the rack, it is characterised in that the elevating mechanism also includes load detection components, the load
Detection components include cantilever, oil cylinder and the sensor for detecting the oil cylinder pressure, one end of the cantilever with it is described
The housing of gear-box is fixedly connected, and the top of the other end of the cantilever and the oil cylinder is hinged, the bottom of the oil cylinder and institute
Mounting bracket to be stated to be hinged, the side wall of the mounting bracket is provided with installation set, and the installation set includes limiting plate, bearing holder (housing, cover) and bearing,
The limiting plate is parallel to be fixedly mounted in the side wall of the mounting bracket, and the top of the output shaft is provided with and the limiting plate
The stop flange being engaged, the output shaft are rotationally inserted into the installation set, and the bearing holder (housing, cover) is coaxially mounted to institute
The outside of limiting plate is stated, the coaxial bearing is sleeved on the output shaft, and the bearing is located at the limiting plate and the limit
Between the flange of position.
2. elevating mechanism according to claim 1, it is characterised in that the internal diameter of the limiting plate is less than the stop flange
External diameter.
3. elevating mechanism according to claim 1, it is characterised in that the installation set also includes mounting flange, described solid
Determine the top that flange coaxial is arranged on the bearing holder (housing, cover), the bearing holder (housing, cover) is arranged on the limiting plate by the mounting flange
Outside.
4. elevating mechanism according to claim 1, it is characterised in that the bearing holder (housing, cover) is externally provided with multiple stiffener plates, institute
State periphery wall of multiple stiffener plates along the bearing holder (housing, cover) circumferentially, each stiffener plate is outer with the bearing holder (housing, cover)
Perisporium is fixedly connected with the side wall of the mounting bracket.
5. elevating mechanism according to claim 1, it is characterised in that the gear-box is defeated including first input end and second
Enter end, the first input end and the second input arranged for interval, the first input end is used to connect with brake, institute
The second input is stated to be used to connect with hydraulic motor.
6. elevating mechanism according to claim 1, it is characterised in that the oil cylinder bottom is corresponded in the side wall of the mounting bracket
The position at end is provided with boss, and the boss is vertically mounted in the side wall of the mounting bracket, the bottom of the oil cylinder with it is described convex
Table-hinges connects.
7. elevating mechanism according to claim 1, it is characterised in that lightening hole is provided with the cantilever.
8. elevating mechanism according to claim 1, it is characterised in that the load detection components also include shuttle valve, described
The first input end of shuttle valve connects with the rod chamber of the oil cylinder, the second input of the shuttle valve and the rodless cavity of the oil cylinder
Connection, the output end of the shuttle valve connect with the sensor.
9. elevating mechanism according to claim 8, it is characterised in that the load detection components also include safety valve, institute
The rodless cavity that safety valve is stated with the oil cylinder connects.
10. elevating mechanism according to claim 1, it is characterised in that the gear-box is epicyclic gearbox.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511029192.XA CN105480897B (en) | 2015-12-31 | 2015-12-31 | A kind of rack-and-pinion elevating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511029192.XA CN105480897B (en) | 2015-12-31 | 2015-12-31 | A kind of rack-and-pinion elevating mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105480897A CN105480897A (en) | 2016-04-13 |
| CN105480897B true CN105480897B (en) | 2017-12-01 |
Family
ID=55668238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511029192.XA Active CN105480897B (en) | 2015-12-31 | 2015-12-31 | A kind of rack-and-pinion elevating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105480897B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105923566B (en) * | 2016-05-03 | 2018-07-31 | 武汉船用机械有限责任公司 | A kind of modularization mekydro rack lifting mechanism |
| CN107642077B (en) * | 2017-08-24 | 2019-09-06 | 中国海洋石油集团有限公司 | A kind of maintenance intervention method of drilling platforms cantilever beam |
| CN110228764A (en) * | 2019-07-15 | 2019-09-13 | 河南祥鼎智能科技股份有限公司 | A kind of rack-and-pinion lifting device for AGV |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539037A (en) * | 2011-11-18 | 2012-07-04 | 杭州欧佩亚海洋工程有限公司 | Force moment sensor for output pinion of self-elevating platform elevating unit |
| CN204237509U (en) * | 2014-11-20 | 2015-04-01 | 泰州市泓博舞台设备科技有限公司 | A kind of multistage gear rack elevating system |
| CN105152071A (en) * | 2015-07-23 | 2015-12-16 | 苏州卫生职业技术学院 | Gear and rack type boosting mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4651273B2 (en) * | 2003-08-22 | 2011-03-16 | 正文 中手 | Spud strut swing standing device |
-
2015
- 2015-12-31 CN CN201511029192.XA patent/CN105480897B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539037A (en) * | 2011-11-18 | 2012-07-04 | 杭州欧佩亚海洋工程有限公司 | Force moment sensor for output pinion of self-elevating platform elevating unit |
| CN204237509U (en) * | 2014-11-20 | 2015-04-01 | 泰州市泓博舞台设备科技有限公司 | A kind of multistage gear rack elevating system |
| CN105152071A (en) * | 2015-07-23 | 2015-12-16 | 苏州卫生职业技术学院 | Gear and rack type boosting mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105480897A (en) | 2016-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105480897B (en) | A kind of rack-and-pinion elevating mechanism | |
| CN101618839B (en) | Telescopic crane and single cylinder bolt type telescopic arm | |
| CN103572744B (en) | A kind of lift platform | |
| US9982408B2 (en) | Gear pair for a lifting vessel | |
| CN105369792B (en) | The deceleration device and pinion and-rack jacking system of pinion and-rack jacking system | |
| CN211145991U (en) | Tunnel geological radar monitoring rack | |
| CN203047220U (en) | Heavy machinery and supporting leg for heavy machinery | |
| CN105716859A (en) | Drive assembly detection device used for gear and rack lifting mechanism | |
| CN202164813U (en) | Anti-inclination device for scaffold lifting in construction | |
| CN107354929A (en) | A kind of lowering or hoisting gear and hoistable platform | |
| CN103674390B (en) | A kind of winch brake power test unit and method | |
| CN204825838U (en) | Hydraulic lifting system's final controlling element for offshore platform | |
| CN108104090A (en) | A kind of hydraulic bolt lifting gear | |
| CN210863717U (en) | Steel pipe detects uses inside clamping device | |
| CN105648998B (en) | A kind of mounting means for self-elevating drilling platform lifting gear | |
| CN205222538U (en) | Revolving stage and engineering machine tool | |
| CN206529758U (en) | Ring flat-plate pin platform lifting device | |
| RU111875U1 (en) | INSTALLATION FOR DRILLING, TESTING AND REPAIR OF OIL AND GAS WELLS | |
| CN208022627U (en) | A kind of boom hoisting applied to indoor construction | |
| CN219058357U (en) | Mechanical type tower arm prevents backward tilting structure | |
| CN110735431A (en) | hydrostatic pile press inclined pile construction method and dragon frame assembly | |
| CN202081630U (en) | Anti-leaning and anti-falling mechanism of attaching elevating scaffold for building construction | |
| CN208907448U (en) | A kind of detachable derrick buffer unit | |
| CN210029766U (en) | Adjusting device and supporting device with same | |
| CN208686699U (en) | A kind of fluid pressure drive device with locking mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |