CN102730578B - Plug-unplug pin mechanism and cylinder head thereof, plug pin type telescopic arm and crane - Google Patents
Plug-unplug pin mechanism and cylinder head thereof, plug pin type telescopic arm and crane Download PDFInfo
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- CN102730578B CN102730578B CN201210213807.4A CN201210213807A CN102730578B CN 102730578 B CN102730578 B CN 102730578B CN 201210213807 A CN201210213807 A CN 201210213807A CN 102730578 B CN102730578 B CN 102730578B
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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
- B66C23/64—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
- B66C23/708—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic locking devices for telescopic jibs
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- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The present invention discloses a plug-unplug pin mechanism and a cylinder head thereof, a plug pin type telescopic arm and a crane. The cylinder head of the plug-unplug pin mechanism comprises a cylinder pin and a arm pin pushing rod, wherein the cylinder pin and the arm pin pushing rod are arranged on both sides of the cylinder head of the plug-unplug pin mechanism, the cylinder pin is provided for locking with the telescopic arm, and the arm pin pushing rod is provided for pushing the telescopic arm and the cylinder pin to unlock. The cylinder head is provided with a guide mechanism for guiding movements of the arm pin pushing rod and the cylinder pin. According to the present invention, the arm pin oil cylinder, the dovetail groove structure, the poking fork and other structures on the cylinder head of the oil cylinder are canceled, such that the structure of the cylinder head of the oil cylinder is simple; mechanical failure of the cylinder head is reduced; the guide mechanism drives the cylinder pin and the arm pin pushing rod to mutually lock so as to improve reliability of the interlock mechanism; and manufacturing difficulty and processing cost of the cylinder head of the oil cylinder are reduced.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to pin inserting-drawing mechanism in a kind of hoisting crane bolt-type telescopic arm and the oil cylinder head of this mechanism, and telescopic boom with this pin inserting-drawing mechanism and the hoisting crane with this telescopic boom.
Background technology
There is in recent years a kind of single-cylinder bolt type telescopic boom, this telescopic boom only has a telescopic oil cylinder, and the movable end of this telescopic oil cylinder is provided with cylinder head, the both sides of cylinder head are provided with two corresponding cylinder pins, the center shaft of these two cylinder pins and the center shaft of described telescopic oil cylinder are coplanar, and described telescopic oil cylinder can optionally lock or discharge the relative position of itself and arbitrary joint telescopic boom in the time that above-mentioned cylinder pin stretches out or regains.In addition, between adjacent each joint telescopic boom and between basic arm and the first telescopic boom, be equipped with arm pin, this arm pin is located on the top side of arm, and the relative position between adjacent telescopic boom and between basic arm and first segment telescopic boom can optionally be locked or be discharged by this arm pin.
First described telescopic oil cylinder can lock with minor details telescopic boom, by regaining arm pin, minor details telescopic boom and joint telescopic boom second from the bottom is discharged simultaneously, and now described telescopic oil cylinder can be taken minor details telescopic boom out of; Minor details telescopic boom after arriving desired location relocks itself and joint telescopic boom second from the bottom, regain described telescopic oil cylinder and itself and joint telescopic boom second from the bottom are locked, then joint telescopic boom second from the bottom and joint telescopic boom third from the bottom are discharged, now described telescopic oil cylinder can be taken joint telescopic boom second from the bottom out of, the like can realize stretching out successively of each joint telescopic boom.
In such scheme, the Plug Action of cylinder pin and arm pin is generally controlled by two group oil cylinders, in order to prevent system misoperation, conventionally adopt the structures such as shift fork, dovetail furrow can not to move to guarantee cylinder pin oil cylinder and arm pin oil cylinder simultaneously, in the time that moving, the piston rod of arm pin oil cylinder drives oat tail groove structure action downwards together with shift fork downwards, cylinder pin is carried out lockedly in the release of arm pin, prevent the maloperation of cylinder pin.
But the cylinder head structure complexity of this this pin inserting-drawing mechanism, high to the requirement of cylinder head processing technology, tooling cost is high, higher to the position setting accuracy requirement of shift fork, interlocking structure complexity.Therefore, how improving for existing pin inserting-drawing mechanism cylinder head, more to adapt to using needs, is those skilled in the art's technical barriers urgently to be resolved hurrily.
Summary of the invention
In view of this, the present invention is intended to propose a kind of pin inserting-drawing mechanism and cylinder head, bolt-type telescopic arm and hoisting crane, to solve existing pin inserting-drawing mechanism because oil cylinder head structure is too complicated and then cause processing technology and the too high problem of setting accuracy.
On the one hand, the invention provides a kind of cylinder head of pin inserting-drawing mechanism, described cylinder head both sides are provided with for the cylinder pin of telescopic boom locking with for the arm pin push rod of pusher arm pin release; Wherein,
Described cylinder head is provided with the guiding mechanism for guide arm pin push rod and the motion of cylinder pin;
Described guiding mechanism is connected with driver train.
Further, described guiding mechanism comprises:
The first pilot bar, is arranged on described arm pin push rod, for guide arm pin pushrod movement;
The second pilot bar, is arranged on described cylinder pin, moves for guide cylinder pin;
Pilot hole, is arranged on cylinder head, for the sense of motion of lead the first guide link and the second guide link;
Trough plate, is slidably arranged on cylinder head, and the groove arranging above by it is controlled the move distance of the first pilot bar and the second pilot bar.
Further, described trough plate is provided with the second guide groove of controlling respectively the first guide groove of the first pilot bar motion and controlling the second pilot bar motion;
The first described guide groove and the second guide groove comprise sync section and asynchronous section, wherein,
Sync section, the first pilot bar and the second pilot bar that the first guide groove and the second guide groove are controlled are respectively synchronized with the movement;
Asynchronous section, first guide groove control the first pilot bar continues to move to desired location, second guide groove control the second pilot bar stop motion.
Further, the arc-shaped slot that the first described guide groove and the second guide groove are predetermined curvature.
Further, described cylinder pin is provided with axis hole,
Described arm pin push rod is coaxial with cylinder pin;
Described arm pin push rod is inserted in cylinder pin, and is provided with the pars contractilis of extended cylinder pin shaft hole.
Further, on described trough plate, be also provided with the interlocking block for locking trough plate.
On the other hand, the present invention also provides a kind of pin inserting-drawing mechanism, comprising: be located at the telescopic oil cylinder in telescopic boom, the movable end of described telescopic oil cylinder is provided with cylinder head;
Arm pin, is located on the sidewall of telescopic boom arm afterbody slidably, in the time that slip is stretched out and the locking of another telescopic boom;
Return mechanism, for remaining on described arm pin to stretch out lock-out state;
Fork, dead axle is articulated with on the sidewall of telescopic boom, and its one end is connected with described arm pin, and the other end is subject to the promotion of arm pin push rod and makes the release of arm pin;
It is characterized in that, described cylinder head is above-mentioned cylinder head, and wherein, the arm pin push rod of described cylinder head is realized the release of arm pin by promoting fork.
Further, described return mechanism is spring, this spring around the week that is arranged in described arm pin upwards, stretch out lock-out state for keeping described arm pin to remain on; The described fork one end that is connected with described arm pin is also connected with the block for stopping trough plate return.
On the one hand, the present invention also provides a kind of bolt-type telescopic arm, comprises basic arm and is socketed at least one joint telescopic boom in described basic arm again, and arbitrary joint telescopic boom is provided with the pin inserting-drawing mechanism described in claim 7 to 8 any one.
More enter on the one hand, the present invention also provides a kind of hoisting crane, and described hoisting crane is provided with above-mentioned bolt-type telescopic arm.
A kind of pin inserting-drawing mechanism provided by the invention and cylinder head, bolt-type telescopic arm and hoisting crane, by the cylinder head both sides at a kind of pin inserting-drawing mechanism be provided with for the cylinder pin of telescopic boom locking and the arm pin push rod of pusher arm pin release; Arm pin push rod with cylinder pin coaxial and arm pin pushing rod sleeve in cylinder pin inside; Cylinder head is provided with the guiding mechanism for guide arm pin push rod and the motion of cylinder pin, and described guiding mechanism is connected with driver train.The present invention has cancelled the structures such as arm pin oil cylinder, oat tail groove structure and the shift fork above oil cylinder head, makes oil cylinder head structure become simpler; Reduce the mechanical breakdown of cylinder head part; Drive cylinder pin and arm pin push rod to interlock by guiding mechanism and improved mutual interlocking gear reliability; Manufacture difficulty and the processing charges of oil cylinder head are reduced.Make pin inserting-drawing mechanism use more convenient simultaneously.
Accompanying drawing explanation
The structural representation of a kind of pin inserting-drawing mechanism oil cylinder that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the local structure schematic diagram that Fig. 1 is applied to the first state after pin inserting-drawing mechanism;
Fig. 3 is that pin inserting-drawing mechanism shown in Fig. 2 is at the structural representation at another visual angle;
Fig. 4 is the structural representation of pin inserting-drawing mechanism while being applied to the first state on telescopic boom;
Fig. 5 is the local structure schematic diagram that Fig. 1 is applied to the second state after pin inserting-drawing mechanism;
Fig. 6 is that pin inserting-drawing mechanism shown in Fig. 5 is at the structural representation at another visual angle; ;
Fig. 7 is the structural representation of pin inserting-drawing mechanism while being applied to the second state on telescopic boom;
Fig. 8 is the local structure schematic diagram that Fig. 1 is applied to the third state after pin inserting-drawing mechanism;
Fig. 9 is that pin inserting-drawing mechanism shown in Fig. 8 is at the structural representation at another visual angle; ;
Figure 10 is the structural representation of pin inserting-drawing mechanism while being applied to the third state on telescopic boom;
Figure 11 is the partial schematic sectional view of Fig. 9;
Figure 12 is that Fig. 1 is applied to the partial exploded view after pin inserting-drawing mechanism;
Figure 13 is that pin inserting-drawing mechanism is applied to the schematic perspective view on telescopic boom.
The specific embodiment
In order to make those skilled in the art understand better technical scheme of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.It should be pointed out that in this part, the description to concrete structure and description order is only the explanation to specific embodiment, should not be considered as that protection scope of the present invention is had to any restriction.
Please refer to the cylinder head 1 that Fig. 1 the invention provides a kind of pin inserting-drawing mechanism, cylinder head 1 both sides are provided with cylinder pin 2 for locking with telescopic boom 100 and the arm pin push rod 7 of pusher arm pin 5 releases; Cylinder head 1 is provided with the guiding mechanism moving for guide arm pin push rod 7 and cylinder pin 2, and described guiding mechanism is connected with driver train.
As long as can realize telescopic boom 100 locking and 5 releases of pusher arm pin with the guiding mechanism that cylinder pin 2 moves by guide arm pin push rod 7 in this area.Driver train can use independent driving oil cylinder, also can use other driver trains, and same driver train, by guiding mechanism driving cylinder pin and arm pin push rod simultaneously, is realized interlocking.The present invention has cancelled the structures such as oil cylinder head 1 arm pin oil cylinder, oat tail groove structure and shift fork above, makes oil cylinder head 1 structure become simpler; Reduce the mechanical breakdown of cylinder head 1 part; Drive cylinder pin 2 and arm pin push rod 7 to interlock by guiding mechanism and improved mutual interlocking gear reliability; Manufacture difficulty and the processing charges of oil cylinder head 1 are reduced.Make pin inserting-drawing mechanism use more convenient simultaneously.
The present embodiment cylinder pin 2 is with the concrete structure of arm pin push rod 7 referring to Figure 11, Figure 12 and Figure 13, and coaxial and arm pin push rod 7 is enclosed within cylinder pin 2 inside to arm pin push rod 7 with cylinder pin 2; Cylinder pin 2 is provided with axis hole 23, arm pin push rod 7 is plugged in the axis hole 23 of cylinder pin 2, and be provided with the pars contractilis of the axis hole 23 of extended cylinder pin 2, arm pin push rod 7 can be in the interior slip of cylinder pin 2, so that pars contractilis stretches out axis hole 23 and retracts in axis hole 23 so that total is coherent, reduce manufacture difficulty and the processing charges of oil cylinder head 1.
In addition, as shown in FIG. 11 and 12, the second pilot bar 71 is arranged on the afterbody of cylinder pin 2, because arm pin push rod 7 is plugged in cylinder pin 2, so the first pilot bar 71 of arm pin push rod 7 is through the through hole 22 of cylinder pin 2 tops and bottom, then stretch out the pilot hole 11 of cylinder head 1 top and bottom and realize the guiding to arm pin push rod 7, cylinder pin 2 and arm pin push rod 7 structures are compacter.
Particularly, as shown in FIG. 11 and 12, guiding mechanism comprises: the first pilot bar 71, be arranged on arm pin push rod 7, and move for guide arm pin push rod 7; The second pilot bar 21, is arranged on cylinder pin 2, moves for guide cylinder pin 2; Pilot hole 11, is arranged on cylinder head 1, for the sense of motion of lead the first guide link 71 and the second guide link 21; Trough plate 8, be slidably arranged on cylinder head 2, the groove arranging above by it is controlled the move distance of the first pilot bar 71 and the second pilot bar 21 so that the first pilot bar 71 and the second pilot bar 21 can be in pilot hole 11 according to the projected path predetermined distance of moving; To reach the accurate control to cylinder pin 2 and arm pin push rod 7 miles of relative movement, thereby improve the reliability of interlocking.
As shown in Figure 1, the first pilot bar 71 is provided with two, puts respectively in top and the bottom of arm pin push rod 7, and top and bottom are directed to simultaneously, improves guide effect; Pilot hole 11 is separately positioned on cylinder head upper and lower, for the first pilot bar 71 and the second pilot bar 21 path of motion passages are provided, the first pilot bar 71 and the second pilot bar 21 is moved according to projected path; Trough plate 8 is by the lead move distance of the first pilot bar 71 and the second pilot bar 21 of the groove 81 above it.
In addition, as shown in figure 12, arm pin push rod 7 is coaxial with cylinder pin 2, and arm pin push rod 7 has part can pass the overhanging end of cylinder pin 2 axis holes, institute thinks makes total concision and compact more, arm pin push rod 7 is arranged on cylinder pin 2 inside, and two the first pilot bars 71 are respectively through the through hole 22 of cylinder pin 2 upper and lowers settings and then through pilot hole 11, and the through hole 24 on cylinder pin 2 can not the guiding of restricted guidance hole 11 to the first pilot bar 71 certainly.
Trough plate 8 is provided with to be controlled respectively the first guide groove 81 that the first pilot bar 71 moves and controls the second guide groove 82 that the second pilot bar 21 moves; The first guide groove 81 and the second guide groove 82 comprise respectively sync section and asynchronous section, wherein, sync section, the first pilot bar 71 and the second pilot bar 21 that the first guide groove 81 and the second guide groove 82 are controlled are respectively synchronized with the movement; Asynchronous section, the first guide groove 81 is controlled the first pilot bar 71 and is continued to move to desired location, and the second guide groove 82 is controlled the second pilot bar 21 stop motions.
By the first guide groove 81 and the second guide groove 82 with and on sync section and asynchronous section, realizing arm pin push rod 7 both can be with 2 motion of cylinder pin, again can single movement, overall operation is coherent, reduces the mechanical breakdown of cylinder head 1 part.
The first guide groove 81 and the second guide groove 82 can design according to the arc-shaped slot of predetermined curvature, with the move distance of accurately lead the first pilot bar 71 and the second pilot bar 21, the curvature that deep-slotted chip breaker is set conventionally changes less, to reduce the resistance of guide groove in the time leading, improve 1 service life of cylinder head, reduce the mechanical breakdown of cylinder head 1 part.
On trough plate 8, be also provided with the interlocking block 83 sliding for locking trough plate, so that trough plate 8 locks by interlocking block running to after certain distance.
The present invention also provides a kind of pin inserting-drawing mechanism, as in Figure 2-4, comprising: comprise the telescopic oil cylinder (not providing in figure) of being located in telescopic boom 100, the movable end of telescopic oil cylinder is provided with cylinder head 1; Arm pin 5, is located on the sidewall of telescopic boom 1 arm afterbody slidably, in the time that slip is stretched out and the locking of another telescopic boom; Return mechanism, for remaining on arm pin 5 to stretch out lock-out state; Fork 3, dead axle 4 is articulated with on the sidewall of telescopic boom 100, and its one end is connected with arm pin 5, and the other end is subject to the promotion of arm pin push rod 2 and makes 5 releases of arm pin; Cylinder head 1 is above-mentioned arbitrary cylinder head 1, and wherein, the arm pin push rod 7 of cylinder head 1 promotes fork 3, and fork 3 swings and makes 5 releases of arm pin.
As shown in Figure 2, cylinder head 1 inner side of pin inserting-drawing mechanism is provided with the cylinder pin 2 that can stretch out from cylinder head 1 both sides, and for locking stretching arm 100, the structure of cylinder head 1 illustrates above-mentioned, do not repeat them here; Be respectively arranged with the arm pin 5 with return mechanism in cylinder head 1 both sides, arm pin 5 is in stretching out state (lock-out state), and its one end is connected with the elongated hole of fork 3 upper ends by pin, and is provided with a cross bar 51 and block 52 in this end, improves overall conformability; Block 52 is arranged on substantially corresponding to cylinder head 1 upper surface midway location, and near cylinder head upper surface, it works together with interlocking block 83, makes arm pin 5 in the time of non-locking, stops that trough plate 8 gets back to initial position (as shown in Figure 2 and Figure 9).
Working process when describing the present invention in detail and specifically apply below by three mode of operations in pin inserting-drawing mechanism:
The first mode of operation, trough plate 8 is in initial position, its position as shown in Figure 2, the arcuate socket trend that designs the first different guide grooves 81 and the second guide groove 82, the first guide grooves 81 and the second guide groove 82 for the first pilot bar 71 and the second pilot bar 21 on trough plate 8 has determined the miles of relative movement of trough plate 8 the first pilot bar 71 and second pilot bar 21 in moving process; This state cylinder pin 2 and arm pin push rod 7 are all positioned at the inside of cylinder head 1, and block 52 does not stretch out, the initial position (as shown in Figure 2) of interlocking block 83 in cylinder head 1 top one avris, as shown in Figure 3; Can be by arm pin 5 in locking state by return mechanism, as shown in Figure 4, return mechanism is chosen as spring, this spring around the week that is arranged in described arm pin 5 upwards for keeping arm pin 5 in stretching out locking state (not shown), because cylinder pin 2 reaches outermost position, so lock with telescopic boom.。
At the second state, while moving to the position shown in Fig. 5 for trough plate 8, the first guide groove 81 on trough plate 8 and the second guide groove 82 are in sync section, and the first pilot bar 71 and the second pilot bar 21 are synchronized with the movement, and cylinder pin 2 and arm pin push rod 7 are simultaneously to both sides synchronization action; And cylinder pin 3 positions reach outermost position, and block 52 does not stretch out, interlocking block 83 moves to cylinder head 1 crown center position with arc, as shown in Figure 6; Now arm pin push rod 7 does not promote fork 3 yet, and as shown in Figure 7, arm pin 5 is still in the lock state by return mechanism, and because cylinder pin 2 reaches outermost position, so lock with telescopic boom.
In the third state, trough plate 8 continues action, while moving to the position shown in Fig. 8, now cylinder pin 2 is motionless, and arm pin push rod 7 continues to two lateral movements, in the process that arm pin push rod 7 moves, promote fork 3 and swing around dead axle 4, thereby band swing arm pin 5 moves, block 52 stretches out and keeps off on the track moving at interlocking block 83, interlocking block 83 with arc move to cylinder head 1 and its initial position with respect to another avris, as shown in Figure 9; In this process, just guarantee the sequencing of first cylinder pin 3 and postbrachium pin 7; Swing by fork 3,5 releases of band swing arm pin, as shown in figure 10.
Press opposite sense when motion at trough plate 8 equally, pin inserting-drawing mechanism from the third state to the second state then to the first state; First arm pin push rod 7 returns in cylinder pin 2 axis holes 23, and then cylinder pin 2 is return together with arm pin push rod 7, and wherein in arm pin push rod 7 fall back process, fork 3 is by the return mechanism return on it, and is with swing arm pin 5 to lock.In addition, arm pin 5 one end are also connected with the block 52 for stopping that trough plate 8 moves, to prevent that arm pin 5 trough plate 8 the return not in the situation that from moving to the first state from the third state, causes arm pin 5 and cylinder pin 2 situation of non-locking simultaneously.
The block 52 that fork of the present invention 3 ends arrange is corresponding with the interlocking block 83 on trough plate 8, swing and make after 5 releases of arm pin at fork 3, block 52 keeps off the middle part at cylinder head 1 top, and interlocking block 83 is fixed on the avris of trough plate 8, interlocking block 83 can be blocked in to the midway location of cylinder head 1 by block 52, thereby make trough plate 8 can only move to the position under the second state, can not continue again to move to the first state, to prevent that arm pin 5 and cylinder pin 2 are in unlocked state simultaneously.
Demand motive mechanism in trough plate 8 moving process equally, can arrange as required a push rod oil cylinder (scheming not shown) and move to control trough plate 8 at cylinder head 1 top; Other driver train also can be set.
Concrete function structure about return mechanism is, in the course of the work, the external part contact fork 3 of arm pin push rod 7, the lower end of fork 3 is produced to a propelling thrust, fork 3 is swung around dead axle 4 under the effect of this propelling thrust, move along the direction near cylinder head 1 upper end of fork 3, thereby band swing arm pin 5 does to regain action along arm pin runner, in the time that arm pin push rod 7 stretches out completely, arm pin 5 is regained completely, now, cylinder head 1 locks with telescopic boom 100, telescopic boom 100 and adjacent another telescopic boom release, finally by telescopic oil cylinder, telescopic boom 100 is moved to relevant position, thereby complete the moving process of telescopic boom 100, when telescopic boom 100 arrives behind relevant position, realize the withdrawal successively of arm pin push rod 7 and cylinder pin 2 by controlling trough plate, in the time that arm pin push rod 7 is regained completely, the lower end of fork 3 is no longer subject to the effect of propelling thrust, arm pin 5 will move and finally return to the state of stretching out along the chute of arm pin 5 under the effect of return mechanism, makes fork 3 also return to initial conditions.
The embodiment of the present invention also provides a kind of bolt-type telescopic arm, comprises basic arm and is socketed at least one joint telescopic boom in described basic arm, and arbitrary joint telescopic boom is provided with the pin inserting-drawing mechanism described in above-mentioned any one.Wherein, the afterbody of arbitrary joint telescopic boom is provided with pin inserting-drawing mechanism described above, because above-mentioned pin inserting-drawing mechanism has above-mentioned technique effect, therefore, this hoisting crane also should possess corresponding technique effect, and its specific implementation process is similar to the above embodiments, does not hereby repeat.
The embodiment of the present invention also provides a kind of hoisting crane, and described hoisting crane is provided with above-mentioned bolt-type telescopic arm.Because above-mentioned bolt-type telescopic arm has above-mentioned technique effect, therefore, the hoisting crane that is provided with this bolt-type telescopic arm also should possess corresponding technique effect, and its specific implementation process is similar to the above embodiments, does not hereby repeat.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. the cylinder head of a pin inserting-drawing mechanism (1), is characterized in that, described cylinder head (1) both sides are provided with for the cylinder pin (2) of telescopic boom (100) locking with for the arm pin push rod (7) of pusher arm pin (5) release;
Described cylinder head (1) is provided with the guiding mechanism with cylinder pin (2) motion for guide arm pin push rod (7);
Described guiding mechanism is connected with driver train; Wherein, described guiding mechanism comprises
The first pilot bar (71), is arranged on described arm pin push rod (7) upper, moves for guide arm pin push rod (7);
The second pilot bar (21), is arranged on described cylinder pin (2) upper, moves for guide cylinder pin (2);
Pilot hole (11), is arranged on cylinder head (1) upper, for the sense of motion of lead the first guide link (71) and the second guide link (21);
Trough plate (8), is slidably arranged in cylinder head (1) upper, and the groove arranging above by it is controlled the move distance of the first pilot bar (71) and the second pilot bar (21).
2. cylinder head as claimed in claim 1, is characterized in that, described trough plate (8) is provided with the first guide groove (81) of controlling respectively the first pilot bar (71) motion and the second guide groove (82) of controlling the second pilot bar (21) motion;
Described the first guide groove (81) and the second guide groove (82) comprise sync section and asynchronous section, wherein,
Sync section, the first pilot bar (71) and the second pilot bar (21) that the first guide groove (81) and the second guide groove (82) are controlled are respectively synchronized with the movement;
Asynchronous section, the first guide groove (81) is controlled the first pilot bar (71) and is continued to move to desired location, and the second guide groove (82) is controlled the second pilot bar (21) stop motion.
3. cylinder head as claimed in claim 2, is characterized in that, the arc-shaped slot that described the first guide groove (81) and the second guide groove (82) are predetermined curvature.
4. the cylinder head as described in as arbitrary in claim 1-3, is characterized in that, described cylinder pin (2) is provided with axis hole (23),
Described arm pin push rod (7) is coaxial with cylinder pin (2);
Described arm pin push rod (7) is inserted in cylinder pin (2), and is provided with the pars contractilis of extended cylinder pin shaft hole (23).
5. the cylinder head as described in as arbitrary in claim 2-3, is characterized in that, is also provided with the interlocking block (83) for locking trough plate (8) on described trough plate (8).
6. a pin inserting-drawing mechanism, comprising: be located at the telescopic oil cylinder in telescopic boom (100), the movable end of described telescopic oil cylinder is provided with cylinder head (1);
Arm pin (5), is located on the sidewall of telescopic boom (100) arm afterbody slidably, in the time that slip is stretched out and the locking of another telescopic boom;
Return mechanism, for remaining on described arm pin (5) to stretch out lock-out state;
Fork (3), dead axle (4) is articulated with on the sidewall of telescopic boom (100), and its one end is connected with described arm pin (5), and the other end is subject to the promotion of arm pin push rod (7) and makes arm pin (5) release;
It is characterized in that, described cylinder head (1) is the cylinder head (1) as described in as arbitrary in claim 1-5, and wherein, the arm pin push rod (7) of described cylinder head (1) is realized the release of arm pin by promoting fork (3).
7. pin inserting-drawing mechanism as claimed in claim 6, it is characterized in that, described return mechanism is spring, this spring around the week that is arranged in described arm pin (5) upwards, be used for keeping described arm pin (5) to remain on and stretch out lock-out state, described fork (3) one end that is connected with described arm pin (5) is also connected with the block (52) for stopping trough plate return.
8. a bolt-type telescopic arm, comprises basic arm and is socketed at least one joint telescopic boom (100) in described basic arm, it is characterized in that: arbitrary joint telescopic boom (100) is provided with the pin inserting-drawing mechanism described in claim 6 to 7 any one.
9. a hoisting crane, is characterized in that, described hoisting crane is provided with bolt-type telescopic arm claimed in claim 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210213807.4A CN102730578B (en) | 2012-06-27 | 2012-06-27 | Plug-unplug pin mechanism and cylinder head thereof, plug pin type telescopic arm and crane |
| PCT/CN2012/085808 WO2014000377A1 (en) | 2012-06-27 | 2012-12-04 | Pin plugging/unplugging mechanism and cylinder head thereof, and pin-type telescopic arm and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210213807.4A CN102730578B (en) | 2012-06-27 | 2012-06-27 | Plug-unplug pin mechanism and cylinder head thereof, plug pin type telescopic arm and crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102730578A CN102730578A (en) | 2012-10-17 |
| CN102730578B true CN102730578B (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210213807.4A Withdrawn - After Issue CN102730578B (en) | 2012-06-27 | 2012-06-27 | Plug-unplug pin mechanism and cylinder head thereof, plug pin type telescopic arm and crane |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102730578B (en) |
| WO (1) | WO2014000377A1 (en) |
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| US11795039B2 (en) * | 2021-04-14 | 2023-10-24 | Tadano Faun Gmbh | Locking device for a telescopic boom, telescopic boom, and mobile crane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102730578B (en) * | 2012-06-27 | 2014-06-18 | 三一汽车起重机械有限公司 | Plug-unplug pin mechanism and cylinder head thereof, plug pin type telescopic arm and crane |
| EP2835336B1 (en) * | 2013-08-09 | 2018-02-28 | Manitowoc Crane Group France SAS | Mechanical locking head |
| CN103527557B (en) * | 2013-09-29 | 2016-02-24 | 徐州重型机械有限公司 | Single-cylinder bolt mechanism and there is oil cylinder and the hoist of this mechanism |
| AU2014314763B2 (en) * | 2013-08-27 | 2017-04-06 | Xuzhou Heavy Machinery Co., Ltd. | Single-acting pin-type telescoping arm, telescoping method thereof, and crane having the telescoping arm |
| CN103693566B (en) * | 2013-12-18 | 2015-11-25 | 徐州重型机械有限公司 | The cylinder head that a kind of single hydraulic oil cylinder driving cylinder arm pin is flexible |
| EP3757054B1 (en) * | 2019-06-24 | 2023-08-02 | Manitowoc Crane Companies, LLC | Electric actuation assembly for crane pinned boom |
| CN110862026B (en) * | 2019-11-07 | 2021-04-20 | 太原重工股份有限公司 | Telescopic boom and crane comprising same |
| DE102021203701B3 (en) * | 2021-04-14 | 2022-09-15 | Tadano Faun Gmbh | Hydraulic actuator for a telescopic boom locking device, locking device, telescopic boom, mobile crane and method for adjusting a telescopic boom |
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| CN102730578B (en) * | 2012-06-27 | 2014-06-18 | 三一汽车起重机械有限公司 | Plug-unplug pin mechanism and cylinder head thereof, plug pin type telescopic arm and crane |
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- 2012-06-27 CN CN201210213807.4A patent/CN102730578B/en not_active Withdrawn - After Issue
- 2012-12-04 WO PCT/CN2012/085808 patent/WO2014000377A1/en active Application Filing
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| US11795039B2 (en) * | 2021-04-14 | 2023-10-24 | Tadano Faun Gmbh | Locking device for a telescopic boom, telescopic boom, and mobile crane |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014000377A1 (en) | 2014-01-03 |
| CN102730578A (en) | 2012-10-17 |
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