CN109052198A - mast cantilever crane - Google Patents
mast cantilever crane Download PDFInfo
- Publication number
- CN109052198A CN109052198A CN201811114941.2A CN201811114941A CN109052198A CN 109052198 A CN109052198 A CN 109052198A CN 201811114941 A CN201811114941 A CN 201811114941A CN 109052198 A CN109052198 A CN 109052198A
- Authority
- CN
- China
- Prior art keywords
- telescopic arm
- support tube
- sprocket wheel
- mast
- driving gear
- 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.)
- Pending
Links
- 239000007787 solid Substances 0.000 claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The present invention provides mast cantilever cranes, belong to oil/gas well operating equipment field, including telescopic arm, it is set in the support tube of telescopic arm outer ring, the support tube is fixed on mast, and axis of the telescopic arm with the support tube along the telescopic arm is slidably connected, and the lower end outside the support tube is installed with driven gear, there are driving gear, rotating electric machine driving of the driving gear by solid lock on mast with what the driven gear was engaged.The present invention is scalable and rotates, easy to operate, quick, energy saving, efficient.
Description
Technical field
The invention belongs to oil/gas well operating equipment fields, are related to mast cantilever crane.
Background technique
Under conventional well in operation process, since required operating equipment, device are numerous, equipment is by transported on trucks to operating location
Afterwards, it needs to be also required to be needed in operation process by the hanged entrucking of crane after the completion of operation by installing after crane unloading in place
The oil pipe of reparation needs crane lifting to transport, and crane has very important effect in traditional work whole process, and traditional hangs
Vehicle prerotation cost is excessively high, and volume is relatively large, and equipment cost and transport are a problems, and the starting of crane is also required to specially
The technical staff of door operates, and human cost is virtually also increased, since multiple links require crane, crane
Almost continue for entire underground work process, but the intermittent time is longer, utilization rate be not it is very high, cause equipment to waste.
Summary of the invention
The problem to be solved in the present invention is to be to provide a kind of mast cantilever crane, and scalable and rotation is easy to operate, fast
It is prompt, energy saving, efficient.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: mast cantilever crane, including telescopic arm are arranged
Support tube in telescopic arm outer ring, the support tube are fixed on mast, and the telescopic arm and the support tube are along described flexible
The axis of arm is slidably connected, and the lower end outside the support tube is installed with driven gear, is engaged with the driven gear
There are driving gear, rotating electric machine driving of the driving gear by solid lock on mast.
Further, the driven gear setting connecting tube is interior and the two is fixedly connected, the upper end of the connecting tube and institute
The lower end for stating support tube is fixedly connected, and the driving gear is located at the inside of the connecting tube with the rotating electric machine.
Further, the upper end of the support tube is equipped with the first sprocket wheel and the first driving motor, and lower end is equipped with the second sprocket wheel,
First driving motor drives the first sprocket wheel and the second sprocket wheel to rotate synchronously by chain structure, is arranged with second sprocket coaxiality
First driving gear, the lower end of the telescopic arm are equipped with the first drive rack, the first driving gear and first driving
Rack gear is engaged.
Further, the lower end of the support tube is equipped with two group of first spring bearing, and the first spring bearing described in two groups is set
In the front and rear sides of the first driving gear, the quantity of every group of first spring bearing is two and is symmetrically arranged at first drive
The left and right sides of carry-over bar, first spring bearing are upward through after the support tube and the lower end surface of telescopic arm is tangent sets
It sets.
Further, the upper surface of the support tube is set there are two the first reinforced shaft, and the first reinforced shaft described in two groups is located at
The both ends of first sprocket wheel.
Further, one end of the telescopic arm is equipped with baffle, and the side solid lock of telescopic arm described in the baffle has second
Driving motor, the other side are equipped with clump weight, the second driving gear are installed on the force-output shaft of the counterweight motor, with described second
What driving gear was engaged has the second drive rack, and second drive rack is solid with the clump weight after the baffle
Fixed connection.
Further, the quadrangle of the clump weight is equipped with guide post, and the guide post passes through the baffle plate setting and with two
Person is slidably connected, and the guide post is equipped with limit plate far from one end of the clump weight, the limit plate and it is all described in lead
It is fixedly connected to the end face of column.
Further, the telescopic arm is equipped with third driving motor and third chain far from the upper surface of described support tube one end
Wheel, the third sprocket wheel are arranged right below the 4th sprocket wheel for being installed in the telescopic arm lower end surface, the third driving motor
The third sprocket wheel and the 4th sprocket wheel synchronous rotary are driven by chain structure, has third with what the 4th sprocket coaxiality was arranged
Gear is driven, the second extension arm is arranged in the telescopic arm and the two is slidably connected, the lower end of second extension arm is equipped with
Third drive rack, the third driving gear are engaged with the third drive rack.
Further, the upper end inside second extension arm is equipped with the second spring bearing, and lower end is equipped with third support shaft
It holds, the inner wall that second spring bearing is upward through after second extension arm with the telescopic arm upper end is in rolling contact, institute
The inner wall that third spring bearing is passed down through after second extension arm with the telescopic arm lower end is stated to be in rolling contact.
Further, the two sides of the telescopic arm are equipped with stretching chain, and the two sides of the support tube are equipped with flexible sprocket wheel, Gu
The telescope motor driving being located on the support tube flexible sprocket wheel rotation, the fixed driven gear in the lower end of the telescopic arm,
Rotating electric machine of the solid lock on mast drives driven gear rotation by driving gear.
Compared with prior art, the present invention has the advantage that as follows with good effect.
1, the support tube and telescopic arm of the opposite sliding of present invention setting, the first driving motor is driven driven by driving gear
Gear rotation, realizes the rotation of support tube, and then realize the 360 degree rotation of telescopic arm, telescopic arm and support tube it is opposite
Sliding realizes length variation, and total not only can be rotated but also can be stretched, and meeting the larger range of lifting of multi-angle needs
It asks.
2, clump weight is set, and when telescopic arm Forward, clump weight is moved backward, and guarantees that telescopic arm and clump weight are entire
The center of gravity of structure is in always on same vertical line, the stability in lift structure hoisting process；
3, the movement of clump weight, telescopic arm and the second extension arm passes through gear & rack structure and is driven, and structure is simple,
It is reliable and stable, also facilitate subsequent care and maintenance；
4, the first spring bearing is set, supporting role is played to telescopic arm, and reduce telescopic arm and support tube it
Between relative friction coefficient, and then reduce the power of the first driving motor, the second spring bearing and third branch is arranged in energy saving
Bearing is supportted, the coefficient of friction between the second extension arm and telescopic arm is reduced, reduces the power of third driving motor, saves energy
Consumption.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of mast cantilever crane of the present invention；
Fig. 2 is the structural schematic diagram that the present invention is free of support tube, connecting tube, telescopic arm and the second extension arm；
Fig. 3 is the portion the D detail drawing of Fig. 2 of the present invention.
Appended drawing reference:
21- support tube；The first driving motor of 211-；The first sprocket wheel of 212-；The second sprocket wheel of 213-；The first sliding tooth of 214-
Wheel；The first spring bearing of 215-；The first reinforced shaft of 216-；22- telescopic arm；The first drive rack of 221-；222- baffle；23- connects
Adapter tube；231- rotating electric machine；232- driving gear；233- driven gear；The second extension arm of 24-；241- third driving motor；
242- third sprocket wheel；The 4th sprocket wheel of 243-；244- third drives gear；245- third drive rack；The second reinforced shaft of 246-；
The second spring bearing of 247-；248- third spring bearing；25- clump weight；251- guide post；2511- limit plate；252- second drives
Dynamic motor；253- second drives gear；The second drive rack of 254-.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in Figure 1, Figure 2 and Figure 3, the present invention is mast cantilever crane, including telescopic arm 22, is set in 22 outer ring of telescopic arm
Support tube 21, support tube 21 is fixed on mast, and axis of the telescopic arm 22 with support tube 21 along telescopic arm 22 is slidably connected, branch
Lower end outside stay tube 21 is installed with driven gear 233, has driving gear 232, driving tooth with what driven gear 233 was engaged
Wheel 232 is driven by rotating electric machine 231 of the solid lock on mast.
Preferably, driven gear 233 is arranged in connecting tube 23 and the two is fixedly connected, the upper end of connecting tube 23 and support tube
21 lower end is fixedly connected, and driving gear 232 is located at the inside of connecting tube 23 with rotating electric machine 231, so that structure is more compact,
And embedding structure is also more preferably beautiful, it is not easy to be imitated by external other staff.
Preferably, the upper end of support tube 21 is equipped with the first sprocket wheel 212 and the first driving motor 211, and lower end is equipped with the second chain
Wheel 213, the first driving motor 211 drives the first sprocket wheel 212 and the second sprocket wheel 213 to rotate synchronously by chain structure, with second
The coaxial arrangement of sprocket wheel 213 first driving gear 214, the lower end of telescopic arm 22 are equipped with the first drive rack 221, the first driving gear
214 are engaged with the first drive rack 221, and gear & rack structure is simple, and transmitting power is more stable.
Preferably, the lower end of support tube 21 is equipped with two group of first spring bearing 215, and two group of first spring bearing 215 is located at
The front and rear sides of first driving gear 214, the quantity of every group of first spring bearing 215 are two and are symmetrically arranged at the first sliding tooth
The left and right sides of item 221, the first spring bearing 215 are upward through the tangent setting in lower end surface after support tube 21 with telescopic arm 22,
Two group of first spring bearing 215 is set, first is that playing a supporting role to telescopic arm 22, second is that reducing telescopic arm 22 and support tube 21
Between relative friction coefficient, both promote the stability of opposite sliding.
Preferably, the upper surface of support tube 21 is set there are two the first reinforced shaft 216, and two group of first reinforced shaft 216 is located at the
The both ends of one sprocket wheel 212 increase the intensity of telescopic arm 22.
Preferably, one end of telescopic arm 22 is equipped with baffle 222, and the side solid lock of 222 telescopic arm 22 of baffle has the second driving
Motor 252, the other side are equipped with clump weight 25, are installed with the second driving gear 253 on the force-output shaft of counterweight motor, with the second driving
What gear 253 was engaged has the second drive rack 254, and the second drive rack 254 is fixed with clump weight 25 after baffle 222
Connection after baffle 222 is arranged, first is that can limit to one end of telescopic arm 22, avoids after wirelessly stretching out of support tube 21
It falls off, second is that facilitating the fixation of the second driving motor 252, clump weight 25, while telescopic arm 22 travels forward, counterweight is set
Block 25 can move backward under the action of the second driving motor 252, guarantee that the axle center of total is in same vertical line always
On, the stability in lift structure operation process；It is highly preferred that the quadrangle of clump weight 25 is equipped with guide post 251, guide post 251
It is arranged across baffle 222 and is slidably connected with the two, guide post 251 is equipped with limit plate 2511, limit far from one end of clump weight 25
Position plate 2511 is fixedly connected with the end face of all guide posts 251, and the mobile accuracy of clump weight 25 can be promoted after setting guide pad,
Play the role of support to clump weight 25 simultaneously, the setting of limit plate 2511 can avoid guide post 251 and fall off out of baffle 222,
And then certain position-limiting action is played to clump weight 25, it avoids clump weight 25 from crossing position and falls.
Preferably, telescopic arm 22 is equipped with third driving motor 241 and third sprocket wheel far from the upper surface of 21 one end of support tube
242, third sprocket wheel 242 is arranged right below the 4th sprocket wheel 243 for being installed in 22 lower end surface of telescopic arm, third driving motor 241
Third sprocket wheel 242 and 243 synchronous rotary of the 4th sprocket wheel are driven by chain structure, has the with the coaxial arrangement of the 4th sprocket wheel 243
Three drive gears 244, are arranged with the second extension arm 24 in telescopic arm 22 and the two is slidably connected, the lower end of the second extension arm 24 is set
There is third drive rack 245, third driving gear 244 is engaged with third drive rack 245, and the second extension arm 24 is arranged
Afterwards, further expansion telescopic extensions, total can reach five meters after stretching on the basis of telescopic arm 22, after retraction only
There are three meters, convenient transportation under retracted mode, under stretching state, stroke extension meets the lifting demand within the scope of large radius.
Preferably, the upper end inside the second extension arm 24 is equipped with the second spring bearing 247, and lower end is equipped with third spring bearing
248, the inner wall that the second spring bearing 247 is upward through after the second extension arm 24 with 22 upper end of telescopic arm is in rolling contact, third branch
The inner wall that support bearing 248 is passed down through after the second extension arm 24 with 22 lower end of telescopic arm is in rolling contact, and the second spring bearing is arranged
247 and third spring bearing 248 after, the coefficient of friction between the second extension arm 24 and telescopic arm 22 can be reduced so that it is flexible more
Add stabilization, but also the power of third driving motor 241 can be reduced, reduce energy consumption, it is more environmentally-friendly, the second extension arm 24 it is upper
End is equipped with the second reinforced shaft 246, and the second reinforced shaft 246 is located at close to one end of third driving motor 241, increases by the second extension arm
24 intensity, the second spring bearing 247 and third spring bearing 248 are located at the second extension arm 24 far from third driving motor 241
One end, promoted the second extension arm 24 with telescopic arm 22 opposite sliding precision.
Embodiment 2: including telescopic arm 22, it is set in the support tube 21 of 22 outer ring of telescopic arm, support tube 21 is fixed on mast
On, axis of the telescopic arm 22 with support tube 21 along telescopic arm 22 is slidably connected, and the lower end outside support tube 21 is installed with driven tooth
Wheel 233 has driving gear 232 with what driven gear 233 was engaged, and driving gear 232 passes through rotation of the solid lock on mast
Motor 231 drives, and the two sides of telescopic arm 22 are equipped with stretching chain, and the two sides of support tube 21 are equipped with flexible sprocket wheel, are installed in support
Telescope motor on pipe 21 drives flexible sprocket wheel rotation, and the fixed driven gear 233 in the lower end of telescopic arm 22, solid lock is on mast
Rotating electric machine 231 drives driven gear 233 to rotate by driving gear 232, this structure is simpler, installation outside numerous parts
It is fixed, promote packaging efficiency.
In practical work process, rotating electric machine 231 is driven, and drives driven gear 233 to rotate by driving gear 232,
Because driven gear 233 is fixedly connected with connecting tube 23, it is achieved that the rotation of support tube 21, and then realize and be set in branch
The 360 degree rotation of telescopic arm 22 inside stay tube 21, the starting of the first driving motor 211 drive the first sprocket wheel by chain structure
212 and second sprocket wheel 213 rotate, realize the rotation of the first driving gear 214, and then drive and drive gear 214 to nibble with first
The movement for the first drive rack 221 closed realizes the elastic of the opposite support tube 21 of telescopic arm 22, in the first driving motor
While 211 starting, the shifting of the second drive rack 254 is realized in the starting of the second driving motor 252 by the second driving gear 253
It is dynamic, and then the back-and-forth motion of clump weight 25 is realized, telescopic arm 22 travels forward, and clump weight 25 moves backward, and guarantees center of gravity
Front-rear position is constant, the stability of lift structure, and third driving motor 241 starts, and realizes third sprocket wheel 242 by chain structure
With the rotation of the 4th sprocket wheel 243, and then the rotation of third driving gear 244 is realized, the second extension arm 24 drives with third
Expanding-contracting action is realized under the action of the third drive rack 245 that gear 244 engages, and telescopic arm 22 and the second extension arm 24 are set
Two-part is flexible, and collapsing length greatly prolongs, and while flexible, the first spring bearing 215 ensure that telescopic arm 22 and support
Relative motion between pipe 21 reduces the frictional force of opposite sliding therebetween, the second spring bearing 247 and third support shaft
Holding 248 reduces frictional force between telescopic arm 22 and the second extension arm 24, so that stretching motion is more steady.
One embodiment of the present invention has been described in detail above, but the content is only preferable implementation of the invention
Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range
Deng should still be within the scope of the patent of the present invention.
Claims (10)
1. mast cantilever crane, it is characterised in that: including telescopic arm, be set in the support tube of telescopic arm outer ring, the support tube is solid
It is scheduled on mast, axis of the telescopic arm with the support tube along the telescopic arm is slidably connected, outside the support tube
Lower end is installed with driven gear, has driving gear with what the driven gear was engaged, the driving gear is existed by solid lock
Rotating electric machine driving on mast.
2. mast cantilever crane according to claim 1, it is characterised in that: the driven gear is arranged in connecting tube and the two
It is fixedly connected, the upper end of the connecting tube is fixedly connected with the lower end of the support tube, the driving gear and the electric rotating
Machine is located at the inside of the connecting tube.
3. mast cantilever crane according to claim 1, it is characterised in that: the upper end of the support tube be equipped with the first sprocket wheel and
First driving motor, lower end are equipped with the second sprocket wheel, and the first driving motor drives the first sprocket wheel and the second sprocket wheel by chain structure
It rotates synchronously, with second sprocket coaxiality setting the first driving gear, the lower end of the telescopic arm is equipped with the first drive rack,
The first driving gear is engaged with first drive rack.
4. mast cantilever crane according to claim 3, it is characterised in that: the lower end of the support tube is equipped with two groups first
Bearing is supportted, the first spring bearing described in two groups is located at the front and rear sides of the first driving gear, every group of first spring bearing
Quantity is two and is symmetrically arranged at the left and right sides of first drive rack, and first spring bearing is upward through the branch
After stay tube with the tangent setting in the lower end surface of telescopic arm.
5. mast cantilever crane according to claim 3, it is characterised in that: the upper surface of the support tube is set there are two first
Reinforced shaft, the first reinforced shaft described in two groups are located at the both ends of the first sprocket wheel.
6. mast cantilever crane according to claim 1, it is characterised in that: one end of the telescopic arm is equipped with baffle, described
The side solid lock of telescopic arm described in baffle has the second driving motor, and the other side is equipped with clump weight, the force-output shaft of the counterweight motor
On be installed with the second driving gear, have the second drive rack with what the second driving gear was engaged, second driving
Rack gear is fixedly connected after passing through the baffle with the clump weight.
7. mast cantilever crane according to claim 6, it is characterised in that: the quadrangle of the clump weight is equipped with guide post, institute
Guide post is stated across the baffle plate setting and is slidably connected with the two, the guide post is equipped with limit far from one end of the clump weight
Position plate, the limit plate are fixedly connected with the end face of all guide posts.
8. mast cantilever crane according to claim 1, it is characterised in that: the telescopic arm is far from described support tube one end
Upper surface is equipped with third driving motor and third sprocket wheel, and being arranged right below for the third sprocket wheel is installed in the telescopic arm lower end
4th sprocket wheel in face, the third driving motor drive the third sprocket wheel and the 4th sprocket wheel synchronous rotary by chain structure,
There is third to drive gear with what the 4th sprocket coaxiality was arranged, the second extension arm is arranged in the telescopic arm and the two is slided
Connection, the lower end of second extension arm are equipped with third drive rack, the third driving gear and the third drive rack
It is engaged.
9. mast cantilever crane according to claim 8, it is characterised in that: upper end inside second extension arm is equipped with the
Two spring bearings, lower end are equipped with third spring bearing, and second spring bearing is upward through after second extension arm and institute
The inner wall for stating telescopic arm upper end is in rolling contact, and the third spring bearing stretches after being passed down through second extension arm with described
The inner wall of arm lower end is in rolling contact.
10. mast cantilever crane according to claim 1, it is characterised in that: the two sides of the telescopic arm are equipped with stretching chain,
The two sides of the support tube are equipped with flexible sprocket wheel, the telescope motor driving being installed on the support tube flexible sprocket wheel rotation
Turn, the fixed driven gear in the lower end of the telescopic arm, rotating electric machine of the solid lock on mast drives driven tooth by driving gear
Wheel rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811114941.2A CN109052198A (en) | 2018-09-25 | 2018-09-25 | mast cantilever crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811114941.2A CN109052198A (en) | 2018-09-25 | 2018-09-25 | mast cantilever crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109052198A true CN109052198A (en) | 2018-12-21 |
Family
ID=64765601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811114941.2A Pending CN109052198A (en) | 2018-09-25 | 2018-09-25 | mast cantilever crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109052198A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424706A (en) * | 2019-07-15 | 2019-11-08 | 上海市建筑装饰工程集团有限公司 | A kind of tower mast structure elevating mechanism |
| CN113928986A (en) * | 2021-10-09 | 2022-01-14 | 中石化四机石油机械有限公司 | Hydraulic control cantilever lifting system |
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| CN209442544U (en) * | 2018-09-25 | 2019-09-27 | 国环宏博(北京)节能环保科技有限责任公司 | Mast cantilever crane |
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2018
- 2018-09-25 CN CN201811114941.2A patent/CN109052198A/en active Pending
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|---|---|---|---|---|
| KR19990026831U (en) * | 1997-12-20 | 1999-07-15 | 황장규 | Gondola Arm Multilevel Telescopic Unit |
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|---|---|---|---|---|
| CN110424706A (en) * | 2019-07-15 | 2019-11-08 | 上海市建筑装饰工程集团有限公司 | A kind of tower mast structure elevating mechanism |
| CN113928986A (en) * | 2021-10-09 | 2022-01-14 | 中石化四机石油机械有限公司 | Hydraulic control cantilever lifting system |
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