CN102424331A - Arm pin mechanism for suspension arms and crane equipment comprising arm pin mechanism - Google Patents
Arm pin mechanism for suspension arms and crane equipment comprising arm pin mechanism Download PDFInfo
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- CN102424331A CN102424331A CN2011103863057A CN201110386305A CN102424331A CN 102424331 A CN102424331 A CN 102424331A CN 2011103863057 A CN2011103863057 A CN 2011103863057A CN 201110386305 A CN201110386305 A CN 201110386305A CN 102424331 A CN102424331 A CN 102424331A
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Abstract
The invention provides an arm pin mechanism for suspension arms and crane equipment comprising the arm pin mechanism. The arm pin mechanism for the suspension arms comprises an arm pin (10), a threaded pair and a first position limiting part (20), wherein the arm pin (10) is provided with a center hole (11) arranged in the axial direction, the threaded pair is arranged in the center hole (11), the first position limiting part (20) is arranged on the arm pin (10) and can move along the axial direction of the arm pin (10), the threaded pair is in driving connection to the first position limiting part (20), and the axial movement limit position of the arm pin (10) is limited by the first position limiting part (20). The arm pin mechanism for the suspension arms according to the invention can realize the fast mounting and dismounting operation between the suspension arms, the structure is simple, the use is convenient and fast, and the operation efficiency is effectively improved.
Description
Technical field
The present invention relates to crane tool field, in particular to a kind of arm arm pin mechanism and comprise the weight-lifting equipment of this arm pin mechanism.
Background technology
Car hosit effect in routine duties is very important, and arm is car hosit most important work parts, and the design of arm directly affects the lifting performance of car hosit.In current industrial construction, telescopic hoist boom is convenient flexibly with it, practical characteristics have obtained using widely.Telescopic hoist boom comprise do not have pin all-hydraulic with two kinds of stretching structures of automatic pinning formula, automatic pinning formula structure owing to easy to use have widely quote.Super-tonnage hoisting crane own wt is big, in the process of transfer tasks place, surpasses road easily and allows load carrying ability, and need decompose transportation this moment with arm, when hoisting crane is worked, also need carry out the arm mounting or dismounting quickly and easily.Therefore, for hoisting crane, how realizing the quick mounting or dismounting between the arm, is the problem that needs solution emphatically.
Summary of the invention
The present invention aims to provide a kind of arm arm pin mechanism and comprises the weight-lifting equipment of this arm pin mechanism, can realize the quick mounting or dismounting operation between the arm, and is simple in structure, convenient to use, effectively improves operating efficiency.
To achieve these goals; According to an aspect of the present invention, a kind of arm arm pin mechanism is provided, has comprised the arm pin; The arm pin has the centre hole that in axial direction is provided with; Arm arm pin mechanism also comprises first limiting section that is arranged on the screw thread pair in the centre hole and is arranged on the arm pin and can moves along the axial direction of arm pin, and screw thread pair drives and is connected to first limiting section, and first limiting section limits the axial motion end position of arm pin.
Further, the periphery wall of arm pin is provided with second limiting section, is provided with elastic mechanism between first limiting section and second limiting section, and first end of elastic mechanism is pressed on first limiting section, and second end of elastic mechanism is pressed on second limiting section.
Further, include the perforation slotted hole that runs through and extend along the axial direction of arm pin along the radial direction of arm pin on the arm pin, first limiting section is arranged on and connects on the slotted hole.
Further, the tapped bore section that screw thread pair comprises the axle drive shaft that has spiro rod section and is positioned on the centre hole and is spirally connected with spiro rod section, axle drive shaft is arranged in the centre hole with respect to first limiting section rotationally.
Further, axle drive shaft also comprises application of force section and the optical axis section between thread segment and application of force section that is arranged on axle drive shaft first end, and optical axis section diameter is smaller or equal to the external diameter of thread segment.
Further, axle drive shaft also comprise the application of force section that is arranged on axle drive shaft first end, the optical axis section of second end that is arranged on axle drive shaft and the backstop section that is arranged on the end of optical axis section.
Further; Second axle sleeve on the outer wall that first limiting section comprises first axle sleeve that is set on the optical axis section, be set in the arm pin and connect first axle sleeve and the alignment pin of second axle sleeve, alignment pin are slidably disposed on along the axial direction of arm pin and connect in the slotted hole.
Further, the wherein end of an end of second axle sleeve is provided with stop lug.
Further, first axle sleeve radially is provided with first pin shaft hole, and second axle sleeve radially is provided with second pin shaft hole, and first pin shaft hole is through hole or blind hole.
Further, first pin shaft hole comprises positioning spiro pit, and an end of alignment pin has the outside thread that cooperates with positioning spiro pit.
Further; The arm pin comprises the supporting part and the support portion that is arranged on second end of arm pin of first end that is arranged on the arm pin; Second limiting section is arranged between supporting part and the support portion; The support portion comprises with the second limiting section bonded assembly transition phase and is positioned at spacing section of the second end end of arm pin that spacing section external diameter is less than transition phase.
Further, supporting part comprise carry section and with carry a section bonded assembly construction section, a side of carrying section includes the load plane that cooperates with arm, construction section is connected with second limiting section.
Further, supporting part is provided with keyway along the axial direction of arm pin.
According to a further aspect in the invention; A kind of weight-lifting equipment is provided, has comprised first arm and second arm, the arm pin exit end of first arm is provided with interior method; The arm pin arrival end of first arm is provided with locating flange; Weight-lifting equipment also comprises above-mentioned arm arm pin mechanism, and first end of arm arm pin mechanism is pressed on the inside flange, and locating flange is pressed on second end of arm arm pin mechanism.
According to embodiments of the invention; Arm arm pin mechanism; Comprise arm pin with the centre hole that in axial direction is provided with; Also comprise first limiting section 20 that is arranged on the screw thread pair in the centre hole and is arranged on the arm pin and can moves along the axial direction of arm pin, screw thread pair drives and is connected to first limiting section, and first limiting section limits the axial motion end position of arm pin.In use, the arm pin is installed between two arms to be connected, adjusts first limiting section through screw thread pair, thereby make the arm pin connect two joint arms, perhaps the connection location from two joint arms breaks away from, and two joint arms are separated.This arm pin mechanism is simple in structure, easy to operate, and through the locking and the separating action of screw thread pair realization arm pin, mounting or dismounting are controlled easy, effectively improve operating efficiency.Elastic mechanism makes the relative position of two limiting sections be in maximum all the time between two limiting sections, also makes first limiting section can hold out against or break away from the stop portion on the arm rapidly, and assurance arm pin mechanism can fast and effeciently be worked.The radial peg axis hole of first axle sleeve and second axle sleeve is a through hole; And first pin shaft hole comprises positioning spiro pit; Alignment pin has the outside thread that cooperates with positioning spiro pit; Guarantee that alignment pin can play good interconnect function, prevent that alignment pin breaks away from from axle sleeve, reduce the probability that the arm pin mechanism lost efficacy.
Description of drawings
The accompanying drawing that constitutes a part of the present invention is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, does not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the sectional structure scheme drawing of arm arm pin mechanism according to an embodiment of the invention;
Fig. 2 shows the structural representation of the arm pin of arm arm pin mechanism according to an embodiment of the invention;
Fig. 3 shows the sectional structure scheme drawing according to the A-A place of Fig. 2;
Fig. 4 shows the structural representation of the axle drive shaft of arm arm pin mechanism according to an embodiment of the invention;
Fig. 5 shows the structural representation of the alignment pin of arm arm pin mechanism according to an embodiment of the invention;
Fig. 6 shows the structural representation of first axle sleeve of arm arm pin mechanism according to an embodiment of the invention;
Fig. 7 shows the sectional structure scheme drawing according to the B-B place of Fig. 6; And
Fig. 8 shows the sectional structure scheme drawing of second axle sleeve of arm arm pin mechanism according to an embodiment of the invention; And
Fig. 9 shows the connection structure scheme drawing of arm arm latch structure according to an embodiment of the invention.
The specific embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
As shown in Figure 1, according to embodiments of the invention, arm arm pin mechanism comprises arm pin 10, screw thread pair and first limiting section 20.Screw thread pair is arranged in the centre hole 11 of arm pin 10, and with first limiting section 20 between drive and be connected, order about first limiting section 20 and move along the axial direction of arm pin.First limiting section 20 can move with respect to arm pin 10 along the axial direction of arm pin 10, adjusts first limiting section 20 residing position on the axial direction of arm pin 10 through screw thread pair, can limit the end position of the axial motion of arm pin 10.In the connection structure of arm, can realize the mounting or dismounting action of arm pin 10 on arm through adjustment first limiting section 20, thereby realize between the two joint arms connection with separate.
When the mounting or dismounting arm, only need act on screw thread pair through socket wrench, just can realize operation, and special mounting or dismounting tools need not be set the arm pin mechanism, simple to operate, convenient to use, can effectively improve the efficient of arm mounting or dismounting.The introducing of screw thread pair makes that arm pin of the present invention is not only laborsaving, and can realize self-locking, is convenient to arm pin position is positioned, also be convenient to arm pin position is adjusted, and accurate positioning, comformability is strong.
Please combine referring to Fig. 2 and shown in Figure 3, arm pin 10 include the supporting part 15 of arm pin 10 first ends, the support portion 16 of arm pin 10 second ends and be arranged on supporting part 15 and support portion 16 between second limiting section 12.
The arm pin mechanism of present embodiment is used to connect first arm 50 and second arm 60.Supporting part 15 is positioned at second arm 60, is used for first arm 50 and second arm 60 are linked together, and bears the relativity power of two joint arms, guarantees the connection structure between the two joint arms.Supporting part 15 comprise carry section 151 and with carry section 151 bonded assembly construction sections 152.One side of carrying section 151 includes in load plane 153, the second arms 60 that cooperate with second arm 60 and comprises the structure that cooperates with load plane 153, and second arm 60 applies application force to load plane 153 at work.Load plane 153 is for being arranged on the planar structure of carrying the section sidewall; The side sidewall of this planar structure through will the section of carrying 151 in axial direction cuts a part and forms, has when connecting second arm 60 that to carry application force big and prevent the effect that relatively rotates between second arm 60 and the carrying section.Construction section 152 is connected with second limiting section 12, is used for the installing and locating flange arrangement, and bears the application force that locating flange applies.The cylindrical section that construction section 152 adapts for the internal diameter with locating flange.The outer wall of supporting part 15 in axial direction is provided with keyway 14, is used for the supporting part 15 and first arm 50 are linked together through positioning key 17, prevents the rotation of arm pin 10, guarantees moving axially of axle drive shaft.Improve the safety in utilization of arm pin mechanism.
Second limiting section 12 is arranged on the periphery wall of arm pin 10; Be shaft shoulder section, be oppositely arranged, and form installing space with first limiting section 20; Elastic mechanism 30 is arranged in this installing space; And first end of elastic mechanism 30 is pressed on first limiting section 20, and second end of elastic mechanism 30 is pressed on second limiting section 12, adjusts the distance between first limiting section 20 and second limiting section 12 according to the action of screw thread pair.In the present embodiment, elastic mechanism 30 is a compression spring.
In the middle of other embodiment, support portion 16 also can include only transition phase 161 with spacing section 162, transition phase 161 forms the step axle with spacing section 162, spacing section 162 external diameter is less than the external diameter of transition phase 161.In addition, can support portion 16 be set to include only formed spacing section 162 of cylindrical section, spacing section 162 directly is connected with second limiting section 12.
The centre hole 11 of arm pin 10 comprise first end that is arranged on arm pin 10 first centre hole, with the first centre hole bonded assembly tapped bore section 111, be arranged on tapped bore section 111 the other end and with tapped bore section 111 bonded assemblys, second centre hole and second threaded connection hole that is arranged on the second centre hole end.The diameter of first centre hole and second centre hole is greater than the tapped bore diameter of tapped bore section 111, and the diameter of second threaded connection hole is greater than the diameter of second centre hole.
Please combine referring to shown in Figure 4, axle drive shaft 40 comprises application of force section 42, optical axis section 43, spiro rod section 41 and backstop section 44.Axle drive shaft 40 is arranged in this centre hole 11 with respect to first limiting section 20 rotationally, constitutes screw thread pair with tapped bore section 111, and this screw thread pair drives with first limiting section 20 and is connected, and actuating arm pin 10 in axial direction moves.
Application of force section 42 is arranged on first end of axle drive shaft 40, is polygonized structure, is used for being connected with external drive mechanism, to axle drive shaft 40 transmission of drive force.This polygonized structure can be quadrangle or hexagon.Optical axis section 43 is arranged on second end of axle drive shaft 40, is cylindrical section.First limiting section 20 passes perforation slotted hole 13 and is arranged on the optical axis section 43, cooperates the mode of operation of adjusting arm pin 10 with optical axis section 43.Spiro rod section 41 is arranged between application of force section 42 and the optical axis section 43, and two ends are connected with optical axis section 43 with application of force section 42 respectively.Spiro rod section 41 is arranged in the tapped bore section 111, is threaded with tapped bore section 111, will convert into from the turning effort power of driver train transmission along the axial force of arm pin 10, and actuating arm pin 10 in axial direction moves.Backstop section 44 is positioned at the end position of optical axis section 43, is used for first limiting section 20 is formed spacing and backstop action.One section optical axis section also can be set between drive end 42 and the spiro rod section 41, to reduce the length of spiro rod section 41, make application of force section 42 overhanging simultaneously, so that cooperate with driver train.
In the middle of other embodiment, axle drive shaft 40 also can include only application of force section 42, optical axis section 43 and spiro rod section 41.Application of force section 42 is arranged on first end of axle drive shaft 40, and spiro rod section 41 is arranged in the tapped bore of tapped bore section 111, and optical axis section 43 is arranged between application of force section 42 and the spiro rod section 41, and external diameter is less than the external diameter of spiro rod section 41.Connecting slotted hole 13 is arranged in the drop shadow spread of optical axis section 43 on arm pin 10.First limiting section 20 passes perforation slotted hole 13 and is arranged on the optical axis section 43, and cooperates with screw thread pair, limits the limit of sports record position of the axial direction of arm pin 10.
Please combine referring to Fig. 5 to shown in Figure 8, first limiting section 20 comprises first axle sleeve 21, second axle sleeve 22 and alignment pin 23.First axle sleeve 21 is positioned at second centre hole, and is set on the optical axis section 43, can do the motion that rotates in a circumferential direction around optical axis section 43, also can do the motion of axial direction with respect to optical axis section 43.Radially be provided with first pin shaft hole 211 on the sidewall of first axle sleeve 21, this pin shaft hole 211 can be through hole, also can be blind hole, can be unthreaded hole, also can be tapped bore.Preferably, the positioning spiro pit of first pin shaft hole 211 for running through.One end of first axle sleeve 21 is pressed on the backstop section 44, and 44 pairs first axle sleeves of backstop section 21 form barrier effect, and through first axle sleeve 21 this barrier effect are passed to whole first limiting section 20, thereby forms the barrier effect to whole first limiting section 20.Under this barrier effect, elastic mechanism 30 is in compressive state all the time, and when screw thread pair is adjusted, makes first limiting section 20 be in the tram all the time, prevents that first limiting section 20 from blocking, and causes the damage or the inefficacy of arm pin mechanism.
The end of one end of second axle sleeve 22 includes stop lug 222, is used for being connected with elastic mechanism 30, and elastic mechanism 30 is played backstop action.In the present embodiment, second axle sleeve 22 is arranged on second end of arm pin 10, and the interior retaining wall of stop lug 222 is connected with elastic mechanism 30, plays the effect of elasticity of compression mechanism 30.The outer retaining wall of stop lug 222 cooperates with the locating flange of first arm 50, to the axial motion end position formation restriction of arm pin 10.
Please combine referring to shown in Figure 9; According to weight-lifting equipment of the present invention, comprise first arm 50 and second arm 60, also comprise above-mentioned arm arm pin mechanism; Arm arm pin mechanism is arranged between first arm 50 and second arm 60, and connects first arm 50 and second arm 60.The arm pin exit end of first arm 50 is provided with inside flange 51; The arm pin arrival end of first arm 50 is provided with locating flange 52; First end of arm arm pin mechanism is pressed on the inside flange 51, and locating flange 52 is pressed on second limiting section 12 of arm pin 10 of arm arm pin mechanism.
When arm arm pin mechanism is installed; At first arm arm pin mechanism is arranged in first arm 50; The stop lug 222 of end of second axle sleeve 22 of arm arm pin mechanism is pressed on the inside flange 51 that is fixedly mounted on first arm 50; Then another locating flange 52 is installed in the outer end of second limiting section 12 of arm pin 10, second limiting section 12 is formed backstop actions, prevent that arm arm pin mechanism from deviating from from the installation end of first arm 50; In the keyway 14 of arm pin 10, insert positioning key 17 (this positioning key 17 is installed on the locating flange 52) then, the rotation that stop arm pin 10 takes place with respect to first arm 50.First limiting section 20 of arm pin 10 and the elastic mechanism 30 between second limiting section 12 are in compressive state at this moment.Then through driver train for example socket wrench be connected with the application of force section 42 of axle drive shaft 40; The input propulsive effort; Second limiting section 12 is moved along the direction of elasticity of compression mechanism 30; And arm pin 10 is pressed in first arm 50, it can not caused second arm 60 and being connected of first arm 50 stop.
When needs are dismantled second arm 60, utilize socket wrench rotating driveshaft 40, because of arm pin 10 under the effect of positioning key 17; Can not rotate, axle drive shaft 40 is the rotation around arm bearing pin center on one side, to upper surface move on one side; Alignment pin 23 also drives second axle sleeve, 22 upward movements, compression spring simultaneously.The gap occurs between the lower surface of second axle sleeve 22 and first arm, 50 afterbody inside flanges, 51 end faces, at this moment, only need overcome arm pin 10 just can be with 10 withdrawals of arm pin with the friction force of pin-and-hole.
Can learn that from foregoing description the present invention is when the dismounting arm, only needing to use socket wrench to act on axle drive shaft can realize, more convenient; The present invention has utilized screw mandrel and feed screw nut's version, and is not only laborsaving, also can realize self-locking, is convenient to the location of arm pin position; The present invention is through the shift length of arm pin oval hole (perforation slotted hole) restriction bearing pin, thereby it is spacing to realize that the arm pin stretches; The present invention can also be through observing or measuring the relative distance between transition axis upper surface and the arm pin upper surface, judges whether the arm pin compresses or discharge to put the potential safety hazard that can avoid the arm pin not reset and bring well in place.
More than be merely the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. arm arm pin mechanism; Comprise arm pin (10); Said arm pin (10) has the centre hole (11) that in axial direction is provided with; It is characterized in that; Said arm arm pin mechanism also comprises being arranged on the screw thread pair in the said centre hole (11) and being arranged on said arm pin (10) goes up first limiting section (20) that also can move along the axial direction of said arm pin (10), and said screw thread pair drives and is connected to said first limiting section (20), and said first limiting section (20) limits the axial motion end position of said arm pin (10).
2. arm arm pin mechanism according to claim 1; It is characterized in that; The periphery wall of said arm pin (10) is provided with second limiting section (12); Be provided with elastic mechanism (30) between said first limiting section (20) and said second limiting section (12), first end of said elastic mechanism (30) is pressed on said first limiting section (20), and second end of said elastic mechanism (30) is pressed on said second limiting section (12).
3. arm arm pin mechanism according to claim 1; It is characterized in that; Include on the said arm pin (10) along the radial direction of said arm pin (10) and run through the also perforation slotted hole (13) of the axial direction extension of the said arm pin in edge (10), said first limiting section (20) is arranged on the said perforation slotted hole (13).
4. arm arm pin mechanism according to claim 3; It is characterized in that; The tapped bore section (111) that said screw thread pair comprises the axle drive shaft (40) that has spiro rod section (41) and is positioned at that said centre hole (11) is gone up and is spirally connected with said spiro rod section (41), said axle drive shaft (40) is arranged in the said centre hole (11) with respect to said first limiting section (20) rotationally.
5. arm arm pin mechanism according to claim 4; It is characterized in that; Said axle drive shaft (40) also comprise the application of force section (42) that is arranged on said axle drive shaft (40) first ends and be positioned at said thread segment (41) and said application of force section (42) between optical axis section (43), said optical axis section (43) diameter is smaller or equal to the external diameter of said thread segment (41).
6. arm arm pin mechanism according to claim 4; It is characterized in that the optical axis section (43) of second end that said axle drive shaft (40) also comprises the application of force section (42) that is arranged on said axle drive shaft (40) first ends, be arranged on said axle drive shaft (40) and the backstop section (44) that is arranged on the end of said optical axis section (43).
7. according to claim 5 or 6 described arm arm pin mechanisms; It is characterized in that; Second axle sleeve (22) on the outer wall that said first limiting section (20) comprises first axle sleeve (21) that is set on the said optical axis section (43), be set in said arm pin (10) and connect said first axle sleeve (21) and the alignment pin (23) of said second axle sleeve (22), said alignment pin (23) is slidably disposed in the said perforation slotted hole (13) along the axial direction of said arm pin (10).
8. arm arm pin mechanism according to claim 7 is characterized in that, the wherein end of an end of said second axle sleeve (22) is provided with stop lug (222).
9. arm arm pin mechanism according to claim 8; It is characterized in that; Said first axle sleeve (21) radially is provided with first pin shaft hole (211), and said second axle sleeve (22) radially is provided with second pin shaft hole (221), and said first pin shaft hole (211) is through hole or blind hole.
10. arm arm pin mechanism according to claim 9 is characterized in that said first pin shaft hole (211) comprises positioning spiro pit, and an end of said alignment pin (23) has the outside thread that cooperates with said positioning spiro pit.
11. according to each described arm arm pin mechanism in the claim 2 to 6; It is characterized in that; Said arm pin (10) comprises the supporting part (15) of first end that is arranged on said arm pin (10) and is arranged on the support portion (16) of second end of said arm pin (10); Said second limiting section (12) is arranged between said supporting part (15) and said support portion (16); Said support portion (16) comprises with said second limiting section (12) bonded assembly transition phase (161) and is positioned at spacing section (162) of the second end end of said arm pin (10) that said spacing section (162) external diameter is less than said transition phase (161).
12. arm arm pin mechanism according to claim 11; It is characterized in that; Said supporting part (15) comprise carry section (151) and with said carryings section (151) bonded assembly construction section (152); A said side of carrying section (151) includes the load plane (153) that cooperates with said arm, and said construction section (152) is connected with said second limiting section (12).
13. arm arm pin mechanism according to claim 12 is characterized in that, said supporting part (15) is provided with keyway (14) along the axial direction of said arm pin (10).
14. weight-lifting equipment; Comprise first arm (50) and second arm (60); The arm pin exit end of said first arm (50) is provided with inside flange (51); The arm pin arrival end of said first arm (50) is provided with locating flange (52), it is characterized in that, said weight-lifting equipment also comprises each described arm arm pin mechanism in the claim 1 to 13; First end of said arm arm pin mechanism is pressed on the said inside flange (51), and said locating flange (52) is pressed on second end of said arm arm pin mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110386305 CN102424331B (en) | 2011-11-28 | 2011-11-28 | Arm pin mechanism for suspension arms and crane equipment comprising arm pin mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110386305 CN102424331B (en) | 2011-11-28 | 2011-11-28 | Arm pin mechanism for suspension arms and crane equipment comprising arm pin mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102424331A true CN102424331A (en) | 2012-04-25 |
| CN102424331B CN102424331B (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110386305 Active CN102424331B (en) | 2011-11-28 | 2011-11-28 | Arm pin mechanism for suspension arms and crane equipment comprising arm pin mechanism |
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| Country | Link |
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| CN (1) | CN102424331B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6216895B1 (en) * | 1998-03-18 | 2001-04-17 | Grove U.S. L.L.C. | Lateral jib locking device |
| CN101734561A (en) * | 2009-12-15 | 2010-06-16 | 长沙中联重工科技发展股份有限公司 | Arm pin structure of suspension arm and arm pin assembly and disassembly mechanism thereof |
| CN102050393A (en) * | 2010-12-22 | 2011-05-11 | 三一汽车起重机械有限公司 | Telescopic crane and single-cylinder plug pin mechanism |
| CN201914865U (en) * | 2010-11-17 | 2011-08-03 | 昆山三一机械有限公司 | Pin shaft easy to assemble and disassemble |
-
2011
- 2011-11-28 CN CN 201110386305 patent/CN102424331B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6216895B1 (en) * | 1998-03-18 | 2001-04-17 | Grove U.S. L.L.C. | Lateral jib locking device |
| CN101734561A (en) * | 2009-12-15 | 2010-06-16 | 长沙中联重工科技发展股份有限公司 | Arm pin structure of suspension arm and arm pin assembly and disassembly mechanism thereof |
| CN201914865U (en) * | 2010-11-17 | 2011-08-03 | 昆山三一机械有限公司 | Pin shaft easy to assemble and disassemble |
| CN102050393A (en) * | 2010-12-22 | 2011-05-11 | 三一汽车起重机械有限公司 | Telescopic crane and single-cylinder plug pin mechanism |
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| Publication number | Publication date |
|---|---|
| CN102424331B (en) | 2013-08-07 |
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