CN101214909B - Shifting fork type telescopic pin mobile mechanism for crane - Google Patents
Shifting fork type telescopic pin mobile mechanism for crane Download PDFInfo
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- CN101214909B CN101214909B CN200810030517XA CN200810030517A CN101214909B CN 101214909 B CN101214909 B CN 101214909B CN 200810030517X A CN200810030517X A CN 200810030517XA CN 200810030517 A CN200810030517 A CN 200810030517A CN 101214909 B CN101214909 B CN 101214909B
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Abstract
The invention discloses a shifting fork type expansion pin insert-draw mechanism for cranes, which includes an expansion oil cylinder (15) and a main body (3) fixed on the cylinder tube of the expansion oil cylinder (15) as well as an expansion pin (1); the cylinder tube of the expansion oil cylinder (15) is provided with a guide rail (6) and a power oil cylinder (10); the guide rail (6) is provided with a slider (7) capable of sliding relatively to the guide rail (6); the slider (7) is drivingly connected with the piston rod of the power oil cylinder (10) and is provided with a spring reset mechanism; the middle part of a shifting fork plate (4) is hinged with the main body (3); one end of the shifting fork plate (4) is hinged with the expansion pin (1), and the other end slides and transmits correspondingly to an inclined trough (14) on the slider (7); the main body (3) is provided with a guiding slot (13) guiding correspondingly with the expansion pin (1). The invention is a shifting fork type expansion pin insert-draw mechanism for cranes which has the advantages of simple and compacted structure, convenience in installation and maintenance, stable and reliable performance, and the improved efficiency of the complete machine. Different from any other products, the invention adopts a novel structure form, has advanced quality and is widely applicable in the series products of large-tonnage crane.
Description
Technical field
The present invention is mainly concerned with the hoisting crane field, refers in particular to a kind of shifting fork type telescopic pin mobile mechanism for crane.
Background technology
The box-shaped principal arm of present large-tonnage both domestic and external, super-tonnage car hosit generally adopts the telescoping mechanism of single-cylinder bolt, and this class telescoping mechanism mainly is made up of the bearing pins on bolt mechanism, telescopic oil cylinder, the arm and other duplicate.Bolt mechanism is the critical component of telescoping mechanism.
Bolt mechanism mainly is made up of telescopic pin mobile mechanism and carrying pin inserting mechanism and both mutual interlocking gears, its working process is: 1, the tache motorice of bolt mechanism and telescopic oil cylinder is fixed, telescopic pin mobile mechanism stretches out pin at the afterbody of first telescopic boom, realizes that the tache motorice and first telescopic boom of telescopic oil cylinder interconnects; 2, bearing pins I is fixed on the first telescopic boom afterbody, by the pin-and-hole that inserts on the basic arm first telescopic boom is connected on the basic arm; 3, carrying pin inserting mechanism is extracted bearing pins I from pin-and-hole, and the basic arm and first telescopic boom are separated from each other; 4, the fixed end of telescopic oil cylinder is fixed on the basic arm afterbody, and other telescopic boom that at this moment will drive first telescopic boom and fixed thereon when telescopic oil cylinder moves moves simultaneously, has realized the flexible of arm; 5, when first telescopic boom moves to the pin-and-hole position of another appointment, the plug-in and pull-off device of bearing pins discharges bearing pins I, bearing pins I ejects by the application force of retracing spring, insert in this pin-and-hole of basic arm, first telescopic boom is reconnected on the basic arm, thereby realized the once flexible of arm.Above action can circulate and carry out.If desired arm is extremely stretched state entirely from full reduced state action, then stretch the N telescopic boom earlier, regain by the telescopic pin mobile mechanism pin that will stretch then, the tache motorice of bolt mechanism and telescopic oil cylinder simultaneously with the portion of N telescopic boom from and retract to the afterbody of N-1 telescopic boom, repetitive cycling is up to first telescopic boom is reached the position.6, for the consideration of secure context, mutual interlocking gear carries out mechanical interlocked to the action of the push-pull structure of retractable pin mechanism and bearing pins, stop mechanism and carry out dangerous play.
As seen from above bolt mechanism working process, the telescopic pin mobile device of bolt mechanism moves more frequent in the telescopic process of arm, service condition complexity, the reliability of mechanism and close profit and play critical effect in flexible action.And existing multiple bolt mechanism both domestic and external exist planform complexity, requirement on machining accuracy height, heat treatment requirements height, manufacture difficulty big, easily lost efficacy, defective such as easy-maintaining not.
Summary of the invention
Technical matters to be solved by this invention provide a kind of simple and compact for structure, installation and maintenance convenient, stable and reliable for performance, the shifting fork type telescopic pin mobile mechanism for crane that improves overall efficiency.
In order to solve the problems of the technologies described above, shifting fork type telescopic pin mobile mechanism for crane provided by the invention, comprise telescopic oil cylinder and be fixed on main body on the cylinder barrel of telescopic oil cylinder, and flexible pin, on the cylinder barrel of described telescopic oil cylinder, be provided with guide rail and actuator cylinder, described guide rail is provided with the slide block of slide relative with it, the piston rod of described slide block and described actuator cylinder is in transmission connection and is provided with spring reset mechanism, the fork plate middle part is hinged on the described main body, described fork plate one end and described flexible pin are hinged, the other end and the corresponding slip transmission of skewed slot on the described slide block, described main body is provided with the guide groove with the corresponding guiding of described flexible pin.
Described spring reset mechanism comprises spring bracket and the extension spring that is arranged symmetrically in described actuator cylinder both sides, the two ends of described extension spring are hung on described spring bracket and the connecting pin, described spring bracket is installed on the described telescopic oil cylinder, and described connecting pin is fixed on the described slide block and with described slide block and is connected with the piston rod of described actuator cylinder.
On the cylinder barrel of described main body and described telescopic oil cylinder backplate is installed.
On the described backplate and be positioned at described fork plate and described flexible pin hinge-point below be fixed with the detection adapter plate, can install electric on the described detection adapter plate near switch.
Described fork plate is hinged with described flexible pin to be the vertical described flexible pin and symmetrical up and down with respect to described flexible pin that passes of force transmission shaft, described force transmission shaft is upper and lower to be set with sliding sleeve, eccentric bushing and by the nut locking at described force transmission shaft two ends, described sliding sleeve is with respect to described flexible pin symmetry and sliding in the guide groove of described main body up and down, described eccentric bushing is symmetrical up and down with respect to described flexible pin, is positioned at the sliding tray of described fork plate end.
One end of the corresponding slip transmission of skewed slot on described fork plate and the described slide block is provided with roller.
The employing technique scheme, actuator cylinder pushes away or spurs slide block and moves horizontally, and when being in pressure-less state in two chambeies of actuator cylinder, spring reset mechanism makes the actuator cylinder withdrawal and drives slide block gets back to initial position together.Described slide block slides in guide rail, and cushion block is installed on the slide block, forms sliding pair by cushion block and guide rail.Described fork plate is installed on the bearing by pin, and fork plate can be around the bearing rotation under the drive of slide block.Eccentric bushing is arranged in the fork plate and is passed by force transmission shaft, is used to regulate the gap.Sliding sleeve is arranged in the main body and is passed by force transmission shaft, guarantees the rotation moving surface of force transmission shaft perpendicular to fork plate.Lining is arranged in the pin-and-hole on the main body, produces with lining when flexible pin is flexible and rubs.
Advantage of the present invention just is: the combination of medium power oil cylinder of the present invention and spring reset mechanism not only is applicable to as two-way cylinder but also can be used as the single acting oil cylinder use, has two kinds of system control forms to select like this.Actuator cylinder among the present invention separates with flexible pin, makes mechanism be difficult for losing efficacy.The present invention realizes the flexible expanding-contracting action of selling by the rotation of fork plate, and propulsion source is above-mentioned actuator cylinder, and these actions can be finished at short notice, can guarantee the high reliability and the high efficiency requirement of mechanism.The processing technology of some vital partss among the present invention realizes that easily the existing conventional Fabricating machinery just can guarantee.The present invention is dismounting easily structurally, and installation and maintenance provide convenience during for work.The present invention is flexible pin motion perpendicular to this direction with the conversion of motion of the horizontal direction of oil cylinder, be applicable to the situation that flexible pin both sides are arranged, the cross-sectional plane occupation space has been saved in this design greatly, is fit to be arranged in the multiple crane shaped arm cross section, has wide practical use.
In sum, the present invention be a kind of simple and compact for structure, installation and maintenance convenient, stable and reliable for performance, the shifting fork type telescopic pin mobile mechanism for crane that improves overall efficiency, can be widely used in the hoister in large tonnage series of products.
Description of drawings
Fig. 1 is the main TV structure scheme drawing after the present invention assembles;
Fig. 2 is the plan structure scheme drawing after the present invention assembles;
Fig. 3 is an A-A sectional structure scheme drawing among Fig. 1 of the present invention.
The specific embodiment
Below with reference to the drawings and specific embodiments the present invention is described in further details.
As Fig. 1, Fig. 2 and shown in Figure 3, shifting fork type telescopic pin mobile mechanism for crane, this mechanism adopts with respect to the symmetrical layout of telescopic oil cylinder, and the two parts symmetrical motion is separate.Main body 3 is made of by bolted connection symmetrical right side body 301 and left side body 302, main body 3 by screw retention on the cylinder barrel of telescopic oil cylinder 15.Flexible pin 1, lining 503 are arranged in the pin-and-hole on the main body 3, produce with lining 503 when flexible pin 1 is flexible and rub.Force transmission shaft 2 vertically passes flexible pin 1 and symmetrical 1 about with respect to flexible pin, and force transmission shaft 2 is upper and lower to be set with sliding sleeve 502, eccentric bushing 501 and by the nut locking at force transmission shaft 2 two ends.Above-mentioned sliding sleeve 502 is with respect to flexible pin symmetry and sliding in the guide groove 13 of main body 31 about, and assurance force transmission shaft 2 is perpendicular to the rotation moving surface of fork plate 4.Above-mentioned eccentric bushing 501 is symmetrical 1 about with respect to flexible pin, is positioned at the sliding tray of fork plate 4 ends, and eccentric bushing 501 is used to regulate the gap, makes force transmission shaft can be subjected to the application force of fork plate 4 simultaneously in two ends about in the of 2.Both sides at telescopic oil cylinder 15 are fixed with bearing 5 respectively, and the middle part of fork plate 4 is provided with mounting hole, and fork plate 4 is installed on the bearing 5 by pin 101.One end of the skewed slot 14 corresponding slip transmissions on fork plate 4 and the slide block 7 is provided with roller 102, skewed slot on the slide block 7 acts on roller 102 and drives fork plate 4 rotations, the other end of fork plate 4 stretches out the two boards shape as fork, can enter the dead slot up and down of main body 3, by eccentric bushing 501, force transmission shaft 2 power is delivered on the flexible pin 1, realizes the expanding-contracting action of flexible pin 1.In the present embodiment, two guide rails 6 are fixed on telescopic oil cylinder 15 left and right sides, and slide block 7 slides in guide rail 6, and slide block 7 lower planes are equipped with cushion block 201, form sliding pair by cushion block 201 and guide rail 6 during motion.Spring reset mechanism comprises spring bracket 12 and the extension spring 9 that is arranged symmetrically in actuator cylinder 10 both sides, the two ends of extension spring 9 are hung on spring bracket 12 and the connecting pin 8, spring bracket 12 is installed on the telescopic oil cylinder 15, and connecting pin 8 is fixed on the slide block 7 and with slide block 7 and is connected with actuator cylinder 10 piston rods.Actuator cylinder 10 can push away or spur slide block 7 and move horizontally in guide rail 6, and when being in pressure-less state in two chambeies of actuator cylinder 10, spring reset mechanism makes actuator cylinder 10 withdrawals and drives slide block 7 gets back to initial position together.Backplate 401 be installed in this mechanism around, mechanism's backplate 401 when arm afterbody slides within will play a protective role.Symmetrical two are detected adapter plates 402 and are fixed on the backplate 401 and are positioned at force transmission shaft 2 belows, electric directly force transmission shaft 2 being detected near switch can be installed detecting on the adapter plate 402, for the location status of this mechanism provides signal source.
Principle of work: referring to Fig. 1, Fig. 2 and shown in Figure 3, the present invention has two kinds of system control forms to actuator cylinder 10.
One, actuator cylinder 10 is used as single acting oil cylinder.The rodless cavity hydraulic fluid port of two actuator cylinders 10 that an are symmetrically arranged hydraulic circuit, two logical atmosphere of each self-closing air valve of rod chamber hydraulic fluid port of inserting in parallel.The rodless cavity of two actuator cylinders 10 advances pressure oil during action, and two actuator cylinders, 10 piston rods stretch out respectively, drives bonded assembly slide block 7 parallel motions separately, and extension spring 9 is stretched.Thereby the skewed slot 14 on two side slides 7 acts on roller 102 and drives fork plate 4 rotations, two fork plates 4 stretch into the inside rotation of an end of main body 3 and by eccentric bushing 501, force transmission shaft 2 power are delivered on the flexible pin 1, make two flexible pins 1 contract pin up to end position to inside.Keep the pressure of the interior hydraulic oil of rodless cavity of actuator cylinder 10, mechanism will keep this end position of pulling pin.What this moment be symmetrically arranged two was electric can directly detect signal from force transmission shaft 2 respectively near switch I, II, and expression left side and right side are flexible respectively sells 1 and be reduced to the position.When needs discharge two flexible pins 1, the logical oil return of rodless cavity with two actuator cylinders 10, the actuator cylinder 10 and the slide block 7 of both sides are got back to initial position under the application force of extension spring 9, simultaneously thereby the skewed slot 14 on two side slides 7 acts on roller 102 and drives fork plates 4 rotations, the outside rotation of an end that two fork plates 4 stretch into main body 3 make two flexible pins 1 to overhanging pin up to initial position.What two other that is symmetrically arranged this moment was electric can directly detect signal from force transmission shaft 2 respectively near switch I II, IV, the flexible pin 1 in expression left side and right side reaches position (near switch not in the drawings, so arranged owing to symmetrical mechanism kinematic is separate 4 switches) respectively.
Two, actuator cylinder 10 is used as two-way cylinder.The rodless cavity hydraulic fluid port of two actuator cylinders 10 that are symmetrically arranged hydraulic circuit of access in parallel and with rod chamber hydraulic fluid port another hydraulic circuit that inserts in parallel.The rodless cavity of two actuator cylinders 10 advances the pressure oil logical oil return of rod chamber simultaneously during action, and two actuator cylinders, 10 piston rods stretch out respectively, drive bonded assembly slide block 7 parallel motions separately, and extension spring 9 is stretched.Thereby the skewed slot on two side slides 7 acts on roller 102 and drives fork plate 4 rotations, two fork plates 4 stretch into the inside rotation of an end of main body 3 and by eccentric bushing 501, force transmission shaft 2 power are delivered on the flexible pin 1, make two flexible pins 1 contract pin up to end position to inside.Keep the pressure of the interior hydraulic oil of rodless cavity of actuator cylinder 10, mechanism will keep this end position of pulling pin.What this moment be symmetrically arranged two was electric can directly detect signal from force transmission shaft 2 respectively near switch I, II, and expression left side and right side are flexible respectively sells 1 and be reduced to the position.When needs discharge two flexible pins 1, the rod chamber of logical oil return while of rodless cavity of two actuator cylinders 10 is advanced pressure oil, the slide block 7 of both sides is got back to initial position under the combined action power of actuator cylinder 10 and extension spring 9, simultaneously thereby the skewed slot 14 on two side slides 7 acts on roller 102 and drives fork plates 4 rotations, the outside rotation of an end that two fork plates 4 stretch into main body 3 make two flexible pins 1 to overhanging pin up to initial position.What two other that is symmetrically arranged this moment was electric can directly detect signal from force transmission shaft 2 respectively near switch I II, IV, and the flexible pin 1 in expression left side and right side reaches the position respectively.
Claims (5)
1. shifting fork type telescopic pin mobile mechanism for crane, comprise telescopic oil cylinder (15) and be fixed on main body (3) on the cylinder barrel of telescopic oil cylinder (15), and flexible pin (1), it is characterized in that: on the cylinder barrel of described telescopic oil cylinder (15), be provided with guide rail (6) and actuator cylinder (10), described guide rail (6) is provided with the slide block of slide relative (7) with it, described slide block (7) is in transmission connection with the piston rod of described actuator cylinder (10), fork plate (4) middle part is hinged on the described main body (3), described fork plate (4) one ends and described flexible pin (1) are hinged, the corresponding slip transmission of skewed slot (14) on the other end and the described slide block (7), described main body (3) is provided with the guide groove (13) with the corresponding guiding of described flexible pin (1), described shifting fork type telescopic pin mobile mechanism for crane also is provided with spring reset mechanism, described spring reset mechanism comprises the spring bracket (12) that is arranged symmetrically in described actuator cylinder (10) both sides and is arranged symmetrically in the extension spring (9) of described actuator cylinder (10) both sides, the two ends of described extension spring (9) are hung on described spring bracket (12) and the connecting pin (8), described spring bracket (12) is installed on the described telescopic oil cylinder (15), and described connecting pin (8) is fixed on described slide block (7) and upward and with the piston rod of described slide block (7) with described actuator cylinder (10) is connected.
2. shifting fork type telescopic pin mobile mechanism for crane according to claim 1 is characterized in that: on the cylinder barrel of described main body (3) and described telescopic oil cylinder (15) backplate (401) is installed.
3. shifting fork type telescopic pin mobile mechanism for crane according to claim 2, it is characterized in that: go up and the below that is positioned at described fork plate (4) and described flexible pin (1) hinge-point is fixed with and detects adapter plate (402) at described backplate (401), described detection adapter plate (402) go up install electric near switch.
4. shifting fork type telescopic pin mobile mechanism for crane according to claim 1 and 2, it is characterized in that: vertically pass described flexible pin (1) by force transmission shaft (2) and make a described end of described fork plate (4) and described flexible pin (1) hinged, and described force transmission shaft (2) is symmetrical up and down with respect to described flexible pin (1), on the described force transmission shaft (2), all be set with sliding sleeve (502) down, eccentric bushing (501) and by the nut locking at described force transmission shaft (2) two ends, described sliding sleeve (502) with respect to described flexible pin (1) up and down the symmetry and can in the guide groove (13) of described main body (3), slide, described eccentric bushing (501) is symmetrical up and down with respect to described flexible pin (1), is positioned at the sliding tray of described fork plate (4) end.
5. shifting fork type telescopic pin mobile mechanism for crane according to claim 1 and 2 is characterized in that: an end of the corresponding slip transmission of skewed slot (14) on described fork plate (4) and the described slide block (7) is provided with roller (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810030517XA CN101214909B (en) | 2008-01-21 | 2008-01-21 | Shifting fork type telescopic pin mobile mechanism for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810030517XA CN101214909B (en) | 2008-01-21 | 2008-01-21 | Shifting fork type telescopic pin mobile mechanism for crane |
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| Publication Number | Publication Date |
|---|---|
| CN101214909A CN101214909A (en) | 2008-07-09 |
| CN101214909B true CN101214909B (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810030517XA Active CN101214909B (en) | 2008-01-21 | 2008-01-21 | Shifting fork type telescopic pin mobile mechanism for crane |
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| CN (1) | CN101214909B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102050393B (en) * | 2010-12-22 | 2012-10-03 | 三一汽车起重机械有限公司 | Telescopic crane and single-cylinder plug pin mechanism |
| DE202013010381U1 (en) * | 2013-11-11 | 2013-11-26 | Terex Cranes Germany Gmbh | Drive a sliding gate of a locking system of a Teleskopiersystems a crane jib |
| 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 |
| EP3138805B1 (en) * | 2014-05-20 | 2020-08-05 | Xuzhou Heavy Machinery Co., Ltd. | Single-cylinder bolt stretching device and crane |
| JP6627898B2 (en) * | 2018-02-16 | 2020-01-08 | 株式会社タダノ | crane |
| CN108406844A (en) * | 2018-05-29 | 2018-08-17 | 北京电子工程总体研究所 | A kind of docking mechanism quickly connecting separation for robot |
| CN109775585B (en) * | 2019-03-19 | 2023-08-22 | 威海怡和专用设备制造有限公司 | Locking device between arms |
| CN112456337B (en) * | 2020-12-02 | 2022-10-28 | 太原重工股份有限公司 | Telescopic boom plug pin mechanism control device and crane |
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2008
- 2008-01-21 CN CN200810030517XA patent/CN101214909B/en active Active
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| CN101214909A (en) | 2008-07-09 |
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Owner name: CHANGSHA ZOOMLION HEAVY INDUSTRY SCIENCE + TECHNOL Free format text: FORMER NAME: CHANG SHA ZOOMLION HEAVY INDUSTRY SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD. |
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Address after: 410007 Hunan province Changsha Furong Road three No. 613 Puyuan branch Patentee after: Zoomlion Heavy Industry Science & Technology Development Co., Ltd. Address before: 410007 Hunan province Changsha Furong Road three No. 613 Puyuan branch Patentee before: Chang Sha Zoomlion Heavy Industry Science & Technology Development Co., Ltd. |