CN101580212A - Counterweight self-handling device for engineering machinery and rotary drilling rig comprising same - Google Patents
Counterweight self-handling device for engineering machinery and rotary drilling rig comprising same Download PDFInfo
- Publication number
- CN101580212A CN101580212A CN 200910085863 CN200910085863A CN101580212A CN 101580212 A CN101580212 A CN 101580212A CN 200910085863 CN200910085863 CN 200910085863 CN 200910085863 A CN200910085863 A CN 200910085863A CN 101580212 A CN101580212 A CN 101580212A
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- Prior art keywords
- counterweight
- handling
- swing arm
- construction machinery
- turntable
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- 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
- B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
- B66C23/76—Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a counterweight self-handling device for engineering machinery, comprising a rotary platform, a movable arm and a lifting cylinder; the bottom part of the movable arm is pin jointed with the rotary platform, and a counterweight connecting piece is arranged on the top part; the lifting cylinder is arranged between the rotary platform and the movable arm to ensure that the movable arm can rotate with respect to the rotary platform in the vertical surface; the counterweight self-handling device further comprises a suspension bar with adjustable length; the two ends of the suspension bar are respectively pin jointed with the rotary platform and the movable arm, and at least one end is removably connected with the rotary platform or the movable arm. The invention has the advantages that: the device can continuously adjust the location of the counterweight according to different working conditions and fixedly limit the location of the counterweight; the invention further has the advantages of simple structure, easy operation and convenient counterweight location limit; in addition, the invention further discloses a rotary drilling rig of the counterweight self-handling device for engineering machinery.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of construction machinery and equipment is with counterweight self-handling and comprise the rotary drilling rig of this device.
Background technology
In the construction machinery product series, the center of gravity that has quite a few product needed assembling counterweight to come its complete machine of balance, the stability of increase complete machine is such as hoisting crane, rotary drilling rig, pipe sling etc.Along with the increase of construction machinery and equipment tonnage, the weight of its counterweight also increases thereupon, but because the restriction of engineering machinery chassis allowable load, its counterweight generally need be made moving counterweight, and promptly counterweight is separated transportation with complete machine, counterweight is installed during work again.
In work progress, construction machinery and equipment often need be changed the workyard, the workyard all needs to re-assembly counterweight everywhere, because the weight of counterweight is very big, therefore install to weight set on the construction machinery and equipment or when counterweight disassembled, need just can finish the assembling or the dismounting of counterweight by the whipline lifting.
The construction machinery and equipment of a part is by finishing the assembling or the dismounting of counterweight by crane, this counterweight assembling or dismounting mode, make the car rental cost that the customer requirement disbursement is outer, and make the time of counterweight assembling or dismounting prolong greatly, improve labour intensity, thereby greatly increased use cost.
Some construction machinery and equipment assembles or dismantles counterweight by counterweight self-handling in addition, no longer realizes the assembling or the dismounting of counterweight by crane.
Please refer to Fig. 1, Fig. 1 is the structural representation that a kind of representative type hoisting crane is used counterweight self-handling in the prior art.
A kind of representative type hoisting crane comprises turntable 11, swing arm 12, jacking cylinder 13 and lifting rope 14 with counterweight self-handling in the prior art; The terminal part of swing arm 12 and turntable 11 articulate, and its top ends is connected with lifting rope 13, and lifting rope 13 is connected with counterweight 15; Be provided with jacking cylinder 13 between turntable 11 and the swing arm 12, so that swing arm 12 rotates in vertical plane with respect to turntable 11.
When counterweight 15 was positioned at low level, the piston rod of jacking cylinder 13 rose, and supports pivot shaft 12, thereby lifting rope 13 rises, and counterweight 15 rises thereupon; When counterweight 15 rises to assigned address, cooperate by dowel hole, counterweight 15 is spacing fixing with turntable 11, finish the assembling of counterweight.The unloading process of counterweight is opposite with above-mentioned assembling process, does not repeat them here.
From the above, described hoisting crane can be realized the assembling voluntarily or the dismounting of counterweight with counterweight self-handling, make the user no longer need amount paid outer rent the crane cost and the installation or removal time decreased of counterweight, reduce job costs, but had following defective:
The first, counterweight generally can only be fixed on a position, can not adjust balance position and spacing fixing continuously according to concrete working condition.
The second, described construction machinery and equipment is comparatively complicated, not easy to operate with the structure of counterweight self-handling.
In addition, the included counterweight self-handling of rotary drilling rig of the prior art also has above-mentioned defective, does not repeat them here.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of construction machinery and equipment counterweight self-handling, and this device can be adjusted the position and spacing the fixing of counterweight continuously according to different working conditions, and structure is comparatively simple, easy operating, the spacing convenience of counterweight.In addition, another technical matters that will solve of the present invention provides a kind of rotary drilling rig that comprises described construction machinery and equipment with counterweight self-handling.
For solving the problems of the technologies described above, the invention provides a kind of construction machinery and equipment counterweight self-handling, comprise turntable, swing arm and jacking cylinder; The bottom of described swing arm and described turntable articulate, and its top ends is provided with the counterweight link; Be provided with jacking cylinder between described turntable and the described swing arm, so that described swing arm rotates in vertical plane with respect to described turntable; Described construction machinery and equipment further comprises length-adjustable strut bar with counterweight self-handling; The two ends of described strut bar articulate with described turntable and described swing arm respectively, and at least one end is connected removably with described turntable or described swing arm.
Preferably, described strut bar further comprises at least two bar sections by being threaded.
Preferably, described strut bar comprises that further two ends have the threaded line pipe of internal thread hole; The two ends of described threaded line pipe are connected with second thread rod with first thread rod respectively; Described first thread rod and described turntable articulate, and described second thread rod and described swing arm articulate.
Preferably, further comprise length-adjustable fixed link; One end of described fixed link and described turntable articulate, and its other end can be connected removably with counterweight, so that limit the relative position of described counterweight and described turntable in the horizontal direction.
Preferably, described fixed link further comprises at least two bar sections by screw thread fit.
Preferably, described fixed link comprises that further two ends have the threaded line pipe of internal thread hole; The two ends of described threaded line pipe are connected with second thread rod with first thread rod respectively; Described first thread rod and described turntable articulate, and described second thread rod can be connected removably with counterweight.
Preferably, the outside of described first thread rod and described second thread rod all has clamp nut.
Preferably, the inboard of described swing arm further comprises link, and described strut bar articulates by described link and described swing arm.
Preferably, described link has the counterweight confined planes.
Preferably, described swing arm is reclinate curved boom.
Preferably, described counterweight link is hook.
The present invention provides a kind of rotary drilling rig in addition, comprises above-mentioned any construction machinery and equipment counterweight self-handling.
A kind of construction machinery and equipment provided by the present invention has increased length-adjustable strut bar on the basis of existing technology with counterweight self-handling, the two ends of described strut bar articulate with described turntable and described swing arm respectively, and at least one end is connected removably with described turntable or described swing arm.
When counterweight was in low level, an end of described strut bar and described turntable or described swing arm were in the dismounting separated position; Described jacking cylinder supports described swing arm and rotates up around described turntable, described counterweight rises thereupon, when counterweight arrives the appropriate location, adjusts the length of described strut bar, make described strut bar have suitable length, then described strut bar is connected between described turntable and the described swing arm.Described strut bar plays the effect of supporting described counterweight, and need not to lock jacking cylinder and support counterweight this moment.
When working condition changes, need to raise or when reducing balance position, support described counterweight by described jacking cylinder, at this moment, an end of described strut bar dismantled with described turntable or swing arm separate; Described jacking cylinder supports described swing arm and rotates up or down around described turntable, described counterweight rises thereupon or descends, when described counterweight arrives suitable adjustment position, transfer length long or that transfer short strut bar, make described strut bar have suitable length again, then described strut bar is connected between described turntable and the described swing arm.Described strut bar plays the effect of supporting described counterweight, and need not to lock jacking cylinder and support counterweight this moment.
As known from the above, described construction machinery and equipment can be fixed on described counterweight optional position in the proper range with counterweight self-handling, thereby adjusts the position of described counterweight and spacing fixing continuously according to different working conditions, and simple and convenient, easy operating.
Description of drawings
Fig. 1 is the structural representation that a kind of representative type hoisting crane is used counterweight self-handling in the prior art;
Fig. 2 is the structural representation that the construction machinery and equipment in an embodiment of the present invention is used counterweight self-handling;
Construction machinery and equipment when Fig. 3 is in low level for counterweight in an embodiment of the present invention structural representation of counterweight self-handling;
Construction machinery and equipment when Fig. 4 is in a high position for counterweight in an embodiment of the present invention structural representation of counterweight self-handling;
Fig. 5 is the structural representation of length-adjustable strut bar and fixed link in an embodiment of the present invention.
The specific embodiment
Core of the present invention provides a kind of construction machinery and equipment counterweight self-handling, and this device can be adjusted the position of counterweight and spacing fixing continuously according to different working conditions, and structure is comparatively simple, easy operating, the spacing convenience of counterweight.In addition, another core of the present invention provides a kind of rotary drilling rig that comprises described construction machinery and equipment with counterweight self-handling.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 2, Fig. 3 and Fig. 4, Fig. 2 is the structural representation that the construction machinery and equipment in an embodiment of the present invention is used counterweight self-handling; Construction machinery and equipment when Fig. 3 is in low level for counterweight in an embodiment of the present invention structural representation of counterweight self-handling; Construction machinery and equipment when Fig. 4 is in a high position for counterweight in an embodiment of the present invention structural representation of counterweight self-handling.
In first kind of embodiment of the present invention, as shown in Figure 2, described construction machinery and equipment comprises turntable 21, swing arm 22 and jacking cylinder 23 with counterweight self-handling; The bottom of swing arm 22 and turntable 21 articulate, and its top ends is provided with counterweight link 24; Be provided with jacking cylinder 23 between turntable 21 and the swing arm 22, so that swing arm 22 rotates in vertical plane with respect to turntable 21; Described construction machinery and equipment further comprises length-adjustable strut bar 26 with counterweight self-handling; The two ends of strut bar 26 articulate with turntable 21 and swing arm 22 respectively, and at least one end is connected removably with turntable 21 or swing arm 22; The number of strut bar 26 can be two, and two strut bars 26 are symmetrical arranged substantially with respect to described vertical plane.
When counterweight 25 was in low level, as shown in Figure 3, an end of strut bar 26 and turntable 21 or swing arm 22 were in the dismounting separated position; The piston rod of jacking cylinder 23 rises, and platform 21 rotates up thereby support swing arm 22 rotates, and counterweight 25 rises thereupon, when counterweight 25 arrives the appropriate location, regulate the length of strut bar 26, make strut bar 26 have suitable length, then strut bar 26 is connected between turntable 21 and the swing arm 22.As shown in Figure 4, strut bar 26 plays the effect of supporting counterweight 25, and need not to lock jacking cylinder 23 and support counterweight 25 this moment.
When working condition changes, when needing the position of rising counterweight 25, open jacking cylinder 23 and support counterweights 25, at this moment, an end of strut bar 26 dismantled with turntable 21 or swing arm 22 separate; The piston rod of jacking cylinder 23 rises, platform 21 rotates up thereby support swing arm 22 rotates, counterweight 25 rises thereupon, when counterweight 25 rises to suitable adjustment position, regulate the length of strut bar 26, make strut bar 26 have suitable length, then strut bar 26 is connected between turntable 21 and the swing arm 22.Strut bar 26 plays the effect of supporting counterweight 25, and need not to lock jacking cylinder 23 and support counterweight 25 this moment.
When working condition changes, when needing to reduce the position of counterweight 25, support counterweights 25 by jacking cylinder 23, at this moment, an end of strut bar 26 dismantled with turntable 21 or swing arm 22 separate; The piston rod of jacking cylinder 23 descends, thereby make swing arm 22 platform 21 that rotates be rotated down, counterweight 25 descends thereupon, when counterweight 25 drops to suitable adjustment position, regulate the length of strut bar 26, make strut bar 26 have suitable length, then strut bar 26 is connected between turntable 21 and the swing arm 22.Strut bar 26 plays the effect of supporting counterweight 25, and need not to lock jacking cylinder 23 and support counterweight 25 this moment.
As known from the above, described construction machinery and equipment can be fixed on counterweight 25 optional position in the proper range with counterweight self-handling, thereby adjusts the position of described counterweight and spacing fixing continuously according to different working conditions, and simple and convenient, easy operating.
Please refer to Fig. 4 and Fig. 5, Fig. 5 is the structural representation of length-adjustable strut bar and fixed link in an embodiment of the present invention.
Second kind of embodiment of the present invention is the further improvement of doing on the basis of above-mentioned first kind of embodiment.
In second kind of embodiment, strut bar 26 may further include at least two bar sections by screw thread fit, and as shown in Figure 5, strut bar 26 can be specially and comprise that two ends have the threaded line pipe 261 of internal thread hole; The two ends of threaded line pipe 261 are connected with second thread rod 263 with first thread rod 262 respectively; First thread rod 262 articulates with turntable 21, and second thread rod 263 articulates with swing arm 22.
Certainly strut bar 26 can be the screw thread fit rod member of other types, as long as can make the length of strut bar 26 to regulate.For example, can be a thread rod and the rod member that threaded line pipe links together, perhaps can for: the centre is a thread rod, two ends connect the rod member of a threaded line pipe respectively.
When needs are transferred the length of the strut 26 of drawing money on credit, with first thread rod 262 or second thread rod 263 to inner rotary, perhaps simultaneously with first thread rod 262 and second thread rod 263 to inner rotary, thereby the length of transferring the strut 26 of drawing money on credit.
In addition, other has the draw money on credit method of strut 26 length of a kind of accent to be: to the direction rotation that departs from first thread rod 262, second thread rod 263 keeps static with respect to threaded line pipe 261 simultaneously with threaded line pipe 261; Perhaps threaded line pipe 261 is rotated to the direction that departs from second thread rod 263, first thread rod 262 keeps static with respect to threaded line pipe 261 simultaneously; Perhaps earlier threaded line pipe 261 is rotated to the direction that departs from first thread rod 262, second thread rod 263 keeps static with respect to threaded line pipe 261 simultaneously, and then with threaded line pipe 261 to the direction rotation that departs from second thread rod 263, first thread rod 262 keeps static with respect to threaded line pipe 261 simultaneously.
When needs are transferred the length of short strut bar 26, transfer the draw money on credit method of length of strut 26 of method and the above-mentioned accent of the length of short strut bar 26 basic identical, be the direction difference, do not repeat them here.
Please refer to Fig. 4, the third embodiment of the present invention is the further improvement of doing on the basis of first kind of embodiment.
In the third embodiment, described construction machinery and equipment further comprises length-adjustable fixed link 27 with counterweight self-handling, fixed link 27 1 ends and turntable 21 articulate, and its other end can be connected removably with counterweight 25, so that limit the relative position of counterweight 25 and turntable 21 in the horizontal direction.Fixed link 27 is connected turntable 21 with counterweight 25, thereby limits the position of counterweight 25 with respect to turntable 21 in the horizontal direction, makes counterweight 25 not shake in the horizontal direction, thereby has improved the stability and the reliability of counterweight 25.
When counterweight 25 was in diverse location, the distance between counterweight 25 and the turntable 21 was also inequality, at this moment, can transfer length long or that transfer short fixed link 27, makes fixed link 27 have suitable length, thereby turntable 21 is connected with counterweight 25.This setup, simple and convenient, easy operating, and avoided using the uncontrollable connection rod member of several length, thereby reduced job costs.
Please refer to Fig. 4 and Fig. 5, the 4th kind of embodiment of the present invention is the further improvement of doing on the basis of the third embodiment.
In the 4th kind of embodiment, the structure of fixed link 27 is identical with the structure of strut bar 26 among second kind of embodiment, and its technique effect is also identical, does not repeat them here.
Please refer to Fig. 5, on the basis of above-mentioned second kind and the 4th kind embodiment, can do further improvement.
The outside that the outside of first thread rod 262 can further be provided with first clamp nut, 264, the second thread rods 263 can further be provided with second clamp nut 265.
With first thread rod 262 or second screw thread, 263 bars when the inner rotary, first clamp nut 264 or second clamp nut, 265 reversing senses are inwardly rotated, win clamp nut 264 or second clamp nut 265 are contacted with threaded line pipe 261, thus being connected of fastening first thread rod 262 or second screw thread, 263 bars and threaded line pipe 261; When first thread rod 262 or second screw thread, 263 bars are inwardly rotated, earlier with first clamp nut 264 or second clamp nut 265 to inner rotary, again first thread rod 262 or second thread rod, 263 reversing senses are inwardly rotated, win clamp nut 264 or second clamp nut 265 are contacted with threaded line pipe 261, thus being connected of fastening first thread rod 262 or second screw thread, 263 bars and threaded line pipe 261.
When rotation threaded line pipe 261 is transferred long or is transferred the length of short strut bar 26, first clamp nut 264 in the spinning solution of first clamp nut 264 and second clamp nut 265 and the epimere and the spinning solution of second clamp nut 265 are basic identical, the net result that reaches after the rotation is: first clamp nut 264 or second clamp nut 265 contact with threaded line pipe 261, thus being connected of fastening first thread rod 262 or second screw thread, 263 bars and threaded line pipe 261.
Please refer to Fig. 2, the 5th kind of embodiment of the present invention is the further improvement of doing on the basis of above-mentioned the 4th kind of embodiment.
In the 5th kind of embodiment, described construction machinery and equipment can further be provided with link 28 with the inboard of the swing arm 22 of counterweight self-handling, and strut bar 26 articulates by link 28 and swing arm 22.
As shown in Figure 2, link 28 protrudes from the inboard of swing arm 22, and strut bar 26 articulates by link 28 and swing arm 22, makes strut bar 26 and being connected of swing arm 22 become easy, and has improved the quality of connection of strut bar 26 with swing arm 22.
Please refer to Fig. 2, on the basis of above-mentioned the 5th kind of embodiment, can do further improvement.
Described construction machinery and equipment can further be provided with counterweight confined planes 281 with the link 28 of counterweight self-handling.Counterweight confined planes 281 and fixed link 27 play the fixed limit effect to counterweight 25 together, make counterweight 25 not be subjected to displacement on the cardinal principle horizontal direction, and this kind limit method is comparatively easy, easy operating.
Please refer to Fig. 2, described construction machinery and equipment can be done further improvement with the swing arm 22 of counterweight self-handling, can be specially reclinate curved boom.With respect to the linear pattern swing arm, curved boom can bear more heavy weight counterweight 25, and makes the stability of counterweight 25 be improved.
Please refer to Fig. 2, described construction machinery and equipment can be done further improvement with the counterweight link 24 of counterweight self-handling, can be specially hook.This setup has additional weight hoisting effect preferably, and simple in structure, and tooling cost is lower.
Rotary drilling rig provided by the present invention comprises the described construction machinery and equipment counterweight self-handling of above-mentioned any specific embodiment; Other parts can be with reference to prior art, and this paper no longer launches.
More than a kind of construction machinery and equipment provided by the present invention is described in detail with counterweight self-handling and rotary drilling rig.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (12)
1. a construction machinery and equipment counterweight self-handling comprises turntable, swing arm and jacking cylinder; The bottom of described swing arm and described turntable articulate, and its top ends is provided with the counterweight link; Be provided with jacking cylinder between described turntable and the described swing arm, so that described swing arm rotates in vertical plane with respect to described turntable; It is characterized in that: further comprise length-adjustable strut bar; The two ends of described strut bar articulate with described turntable and described swing arm respectively, and at least one end is connected removably with described turntable or described swing arm.
2. construction machinery and equipment counterweight self-handling as claimed in claim 1 is characterized in that: described strut bar further comprises at least two bar sections by being threaded.
3. construction machinery and equipment counterweight self-handling as claimed in claim 2 is characterized in that: described strut bar comprises that further two ends have the threaded line pipe of internal thread hole; The two ends of described threaded line pipe are connected with second thread rod with first thread rod respectively; Described first thread rod and described turntable articulate, and described second thread rod and described swing arm articulate.
4. construction machinery and equipment counterweight self-handling as claimed in claim 1 is characterized in that: further comprise length-adjustable fixed link; One end of described fixed link and described turntable articulate, and its other end can be connected removably with counterweight, so that limit the relative position of described counterweight and described turntable in the horizontal direction.
5. construction machinery and equipment counterweight self-handling as claimed in claim 4 is characterized in that: described fixed link further comprises at least two bar sections by being threaded.
6. construction machinery and equipment counterweight self-handling as claimed in claim 5 is characterized in that: described fixed link comprises that further two ends have the threaded line pipe of internal thread hole; The two ends of described threaded line pipe are connected with second thread rod with first thread rod respectively; Described first thread rod and described turntable articulate, and described second thread rod can be connected removably with described counterweight.
7. as claim 3 or 6 described construction machinery and equipment counterweight self-handlings, it is characterized in that: the outside of described first thread rod and described second thread rod all has clamp nut.
8. construction machinery and equipment counterweight self-handling as claimed in claim 6 is characterized in that: the inboard of described swing arm further comprises link, and described strut bar articulates by described link and described swing arm.
9. construction machinery and equipment counterweight self-handling as claimed in claim 8 is characterized in that: described link has the counterweight confined planes.
10. as claim 1 to 6 or each described construction machinery and equipment counterweight self-handling of claim 8 to 9, it is characterized in that: described swing arm is reclinate curved boom.
11. as claim 1 to 6 or each described construction machinery and equipment counterweight self-handling of claim 8 to 9, it is characterized in that: described counterweight link is hook.
12. a rotary drilling rig is characterized in that: comprise each described construction machinery and equipment counterweight self-handling of claim 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910085863 CN101580212B (en) | 2009-06-03 | 2009-06-03 | Counterweight self-handling device for engineering machinery and rotary drilling rig comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910085863 CN101580212B (en) | 2009-06-03 | 2009-06-03 | Counterweight self-handling device for engineering machinery and rotary drilling rig comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101580212A true CN101580212A (en) | 2009-11-18 |
| CN101580212B CN101580212B (en) | 2011-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910085863 Expired - Fee Related CN101580212B (en) | 2009-06-03 | 2009-06-03 | Counterweight self-handling device for engineering machinery and rotary drilling rig comprising same |
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| Country | Link |
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| CN (1) | CN101580212B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012167507A1 (en) * | 2011-06-07 | 2012-12-13 | 长沙中联重工科技发展股份有限公司 | Crane and counterweight loading and unloading mechanism for crane, counterweight block |
| CN103821458A (en) * | 2014-02-28 | 2014-05-28 | 洛阳东方金属结构有限公司 | Rotary drilling rig with auxiliary supporting device |
| WO2023184766A1 (en) * | 2022-03-31 | 2023-10-05 | 三一海洋重工有限公司 | Center of gravity adjusting device, construction machine, and detection device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2910884Y (en) * | 2006-06-29 | 2007-06-13 | 上海三一科技有限公司 | Automatic loading and unloading apparatus for crawler crane |
| CN201087083Y (en) * | 2007-09-14 | 2008-07-16 | 福田雷沃国际重工股份有限公司 | Crane with self-disassembling mechanism |
-
2009
- 2009-06-03 CN CN 200910085863 patent/CN101580212B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012167507A1 (en) * | 2011-06-07 | 2012-12-13 | 长沙中联重工科技发展股份有限公司 | Crane and counterweight loading and unloading mechanism for crane, counterweight block |
| CN103821458A (en) * | 2014-02-28 | 2014-05-28 | 洛阳东方金属结构有限公司 | Rotary drilling rig with auxiliary supporting device |
| WO2023184766A1 (en) * | 2022-03-31 | 2023-10-05 | 三一海洋重工有限公司 | Center of gravity adjusting device, construction machine, and detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101580212B (en) | 2011-06-15 |
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