CN210683029U - Crane revolving platform with locking device and automobile crane - Google Patents
Crane revolving platform with locking device and automobile crane Download PDFInfo
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- CN210683029U CN210683029U CN201921130625.4U CN201921130625U CN210683029U CN 210683029 U CN210683029 U CN 210683029U CN 201921130625 U CN201921130625 U CN 201921130625U CN 210683029 U CN210683029 U CN 210683029U
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Abstract
The utility model provides a crane revolving platform with a locking device and an automobile crane, the crane revolving platform with the locking device comprises a revolving platform body and a locking device, the locking device comprises a sleeve, a pressing piece and a pin shaft are arranged on the sleeve, a plurality of guide rails are arranged at the top of the pin shaft, a guide groove matched with the guide rail in a guiding way and a locking groove alternately arranged with the guide groove are arranged in the sleeve, the groove depth of the locking groove is less than the groove depth of the guide groove, the top surface of the guide rail is inclined, the locking groove is enclosed by a vertical groove wall and an inclined groove wall consistent with the inclination of the top surface of the guide rail, the guide groove is, short lateral wall and roof enclose, and the long lateral wall of guide slot connects with the chute wall in locking groove, is equipped with the transition inclined plane between the perpendicular cell wall in locking groove and the short lateral wall of guide slot, and the inclination on transition inclined plane is unanimous with guide rail top surface inclination, and the pressing part bottom is equipped with a plurality of top pressers, and round pin axle top is equipped with the pressurized inclined plane with top pressers complex. Has the advantages that: the pin shaft can extend out or retract only by pressing down the pressing head, and the operation is very convenient.
Description
Technical Field
The utility model relates to a hoist revolving platform and mobile crane with locking device.
Background
With the rapid development of Chinese economy and urban construction, engineering vehicles are rapidly developed, and automobile cranes become indispensable important tools in engineering construction due to high flexibility. The rotary table is an important component of the automobile crane, when the automobile crane works, the rotary table can drive a cargo boom on the rotary table to rotate relative to a rotary center, and when the automobile crane is in a non-working state, the rotary table needs to be locked on a chassis or a frame of the automobile crane by using a locking device so as to avoid accidents caused by the rotation of a loading system.
The utility model discloses a chinese utility model patent that grant publication number is CN202704886U discloses a gyration locking device and engineering machine tool, and gyration locking device installs the bolt that can stretch out and draw back the removal from top to bottom including fixing the cutting ferrule on the partial revolving platform of getting on the bus in the cutting ferrule inner chamber, is fixed with limit sleeve on the base of the part of getting off, and the bolt stretches out the cutting ferrule and inserts in limit sleeve's locking hole to the locking revolving platform. The clamping sleeve is provided with a shifting fork, the surface of the bolt is provided with a notch, and when the bolt moves downwards to a certain position, the annular part of the shifting fork is clamped into the notch, so that the axial position of the bolt is limited, and the bolt is kept in a state of locking the rotary table. When the unlocking is needed, the straight rod part of the shifting fork is firstly pressed, the annular part of the shifting fork is moved out from the notch of the bolt, the bolt moves upwards under the action of the reset spring to reset, the lower end of the bolt is moved out from the limiting sleeve, and the rotary table can normally rotate.
Above-mentioned gyration locking device can make the bolt insert the spacing sleeve on the base through pressing down the bolt from the top in, locks the revolving platform, but when the unblock, but radially presses the shift fork at the bolt, and this kind of horizontal pressing mode is unfavorable for the power of having an effect of people's hand, causes the inconvenience of unblock to need certain horizontal operating space, the operation is very inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a crane rotary table with a locking device, which is convenient to lock and unlock; an object of the utility model is also to provide a mobile crane of convenient locking of revolving platform and unblock.
In order to achieve the above object, the present invention provides a crane turret with a locking device, which adopts the following technical solution:
a crane rotary table with a locking device comprises a rotary table body and the locking device arranged on the rotary table body, wherein the locking device comprises a sleeve fixed on the rotary table body and extending along the vertical direction, a pressing piece capable of moving up and down is arranged on the sleeve, the bottom of the pressing piece is positioned in the sleeve, the top of the pressing piece penetrates out of the sleeve to form a pressing head, a pin shaft capable of moving up and down is also arranged on the sleeve, the upper part of the pin shaft is positioned in the sleeve, the bottom of the pin shaft penetrates out of the sleeve to form an insertion part inserted into a locking hole on an underframe, an elastic piece is arranged in the sleeve, a downward pressing structure for compressing the elastic piece when the pin shaft moves down is arranged on the pin shaft, a plurality of guide rails extending up and down are arranged on the outer peripheral surface of the top of the pin shaft at intervals, guide grooves which are in guiding fit with the, the groove depth of the locking groove is smaller than that of the guide groove, the top surface of the guide rail is obliquely arranged, the locking groove is surrounded by a vertical groove wall and an inclined groove wall consistent with the inclination of the top surface of the guide rail, the guide groove is surrounded by a long side wall, a short side wall and a top wall to form a U-shaped structure with a downward opening, the long side wall of the guide groove is directly connected with the inclined groove wall of the locking groove, a transition inclined plane is arranged between the vertical groove wall of the locking groove and the short side wall of the guide groove, the inclination of the transition inclined plane is consistent with that of the top surface of the guide rail, the pin shaft is provided with an extending station when the guide rail is positioned in the locking groove and a retracting station when the guide rail is positioned in the guide groove, a plurality of jacking parts used for jacking; in the process that the pin shaft is transited from the retracting station to the extending station, the pressing head is pressed downwards to enable the jacking part to push the pressed inclined plane downwards, so that the guide rail moves downwards along the guide groove, and after the guide rail is separated from the long side wall of the guide groove, the guide rail slides into the locking groove under the guidance of the inclined plane component force, the elastic force of the elastic piece and the inclined groove wall; and when the guide rail is separated from the vertical groove wall of the locking groove, the guide rail slides into the guide groove under the guide of the slope component force, the elastic force of the elastic piece and the transition slope.
The technical scheme of the crane revolving platform with the locking device has the beneficial effects that: the guide rail is arranged at the top of the pin shaft, the guide groove and the locking groove are arranged in the sleeve and are alternately matched with the guide rail, and the groove depth of the locking groove is smaller than that of the guide groove, so that the guide rail can be positioned at an extending station when positioned in the locking groove and can be positioned at a retracting station when positioned in the guide groove, and the inserting part of the pin shaft is inserted into or withdrawn from the locking hole, thereby realizing the locking or unlocking of the rotary table; when the guide rail is in the guide groove, when the guide rail is separated from the long side wall of the guide groove, the guide rail slides into the locking groove under the guide of the slope component force, the elastic force of the elastic piece and the slope groove wall, and when the guide rail is in the locking groove, the guide rail slides into the guide groove under the guide of the slope component force, the elastic force of the elastic piece and the transition slope after the guide rail is separated from the vertical groove wall of the locking groove. That is to say, the utility model provides a locking device is as long as press the press head, and the round pin axle can switch in turn between two stations, need not change and press position and direction, and it is very convenient to operate.
Furthermore, in order to facilitate jacking, the top surface of the guide rail is protected, a plurality of jacking teeth are arranged at intervals at the bottom of the pressing piece, the jacking portion is composed of tooth tips of the jacking teeth, the top of the pin shaft is provided with pressed teeth, the pressed inclined surface is composed of side surfaces of the pressed teeth, and the guide rail is located outside the pressed teeth.
Furthermore, in order to facilitate the processing and manufacturing of the pin shaft, the pin shaft comprises a pin shaft body and a tooth column fixed at the top of the pin shaft body, the outer diameter of the tooth column is larger than that of the pin shaft body, the pressing structure is composed of the bottom surface of the tooth column, and the pressed teeth and the guide rail are arranged on the tooth column.
Further, for the setting of convenient guide slot, locking groove and transition inclined plane, the sleeve internal fixation has fixed cover, guide slot, locking groove and transition inclined plane all set up on fixed sheathe.
Furthermore, in order to facilitate the assembly of the sleeve, one end of the sleeve is a closed end, the other end of the sleeve is an open end, the closed end is provided with a through hole for the insertion part of the pin shaft or the penetrating of the pressing head of the pressing piece, and the open end is fixed with a sealing plate after the locking device is assembled.
In order to achieve the above object, the utility model provides a mobile crane adopts following technical scheme:
an automobile crane comprises a frame and a rotary table arranged on the frame, wherein the rotary table comprises a rotary table body and a locking device arranged on the rotary table body, the locking device comprises a sleeve fixed on the rotary table body, the axis of the sleeve extends along the vertical direction, a pressing piece capable of moving up and down is arranged on the sleeve, the bottom of the pressing piece is positioned in the sleeve, the top of the pressing piece penetrates through the sleeve to form a pressing head, a pin shaft capable of moving up and down is also arranged on the sleeve, the upper part of the pin shaft is positioned in the sleeve, the bottom of the pin shaft penetrates through the sleeve to form an inserting part for inserting into a locking hole on a chassis, an elastic piece is arranged in the sleeve, a downward pressing structure for compressing the elastic piece when the pin shaft moves down is arranged on the pin shaft, a plurality of vertically extending guide rails are arranged on the outer peripheral surface of the top of the pin shaft at intervals, guide grooves which are, the groove depth of the locking groove is smaller than that of the guide groove, the top surface of the guide rail is obliquely arranged, the locking groove is surrounded by a vertical groove wall and an inclined groove wall consistent with the inclination of the top surface of the guide rail, the guide groove is surrounded by a long side wall, a short side wall and a top wall to form a U-shaped structure with a downward opening, the long side wall of the guide groove is directly connected with the inclined groove wall of the locking groove, a transition inclined plane is arranged between the vertical groove wall of the locking groove and the short side wall of the guide groove, the inclination of the transition inclined plane is consistent with that of the top surface of the guide rail, the pin shaft is provided with an extending station when the guide rail is positioned in the locking groove and a retracting station when the guide rail is positioned in the guide groove, a plurality of jacking parts used for jacking; in the process that the pin shaft is transited from the retracting station to the extending station, the pressing head is pressed downwards to enable the jacking part to push the pressed inclined plane downwards, so that the guide rail moves downwards along the guide groove, and after the guide rail is separated from the long side wall of the guide groove, the guide rail slides into the locking groove under the guidance of the inclined plane component force, the elastic force of the elastic piece and the inclined groove wall; and when the guide rail is separated from the vertical groove wall of the locking groove, the guide rail slides into the guide groove under the guide of the slope component force, the elastic force of the elastic piece and the transition slope.
The technical scheme of the automobile crane has the beneficial effects that: the guide rail is arranged at the top of the pin shaft, the guide groove and the locking groove are arranged in the sleeve and are alternately matched with the guide rail, and the groove depth of the locking groove is smaller than that of the guide groove, so that the guide rail can be positioned at an extending station when positioned in the locking groove and can be positioned at a retracting station when positioned in the guide groove, and the inserting part of the pin shaft is inserted into or withdrawn from the locking hole, thereby realizing the locking or unlocking of the rotary table; when the guide rail is in the guide groove, when the guide rail is separated from the long side wall of the guide groove, the guide rail slides into the locking groove under the guide of the slope component force, the elastic force of the elastic piece and the slope groove wall, and when the guide rail is in the locking groove, the guide rail slides into the guide groove under the guide of the slope component force, the elastic force of the elastic piece and the transition slope after the guide rail is separated from the vertical groove wall of the locking groove. That is to say, the utility model provides a locking device is as long as press the press head, and the round pin axle can switch in turn between two stations, need not change and press the position, and it is very convenient to operate.
Furthermore, in order to facilitate jacking, the top surface of the guide rail is protected, a plurality of jacking teeth are arranged at intervals at the bottom of the pressing piece, the jacking portion is composed of tooth tips of the jacking teeth, the top of the pin shaft is provided with pressed teeth, the pressed inclined surface is composed of side surfaces of the pressed teeth, and the guide rail is located outside the pressed teeth.
Furthermore, in order to facilitate the processing and manufacturing of the pin shaft, the pin shaft comprises a pin shaft body and a tooth column fixed at the top of the pin shaft body, the outer diameter of the tooth column is larger than that of the pin shaft body, the pressing structure is composed of the bottom surface of the tooth column, and the pressed teeth and the guide rail are arranged on the tooth column.
Further, for the setting of convenient guide slot, locking groove and transition inclined plane, the sleeve internal fixation has fixed cover, guide slot, locking groove and transition inclined plane all set up on fixed sheathe.
Furthermore, in order to facilitate the assembly of the sleeve, one end of the sleeve is a closed end, the other end of the sleeve is an open end, the closed end is provided with a through hole for the insertion part of the pin shaft or the penetrating of the pressing head of the pressing piece, and the open end is fixed with a sealing plate after the locking device is assembled.
Drawings
FIG. 1 is a front view of the truck crane of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a front cut-away view of the locking device of FIGS. 1 and 2;
FIG. 4 is a front elevational view of the locking device of FIGS. 1 and 2;
FIG. 5 is a block diagram of the pressing member of FIGS. 3 and 4;
fig. 6 is a structural view of the pouch of fig. 3;
fig. 7 is a structural view of the tooth post of fig. 3.
In the figure: 1. a pressing member; 11. a pressing head; 12. a ring gear; 13. pressing the teeth; 2. a sleeve; 3. a pin shaft body; 4. fixing a sleeve; 41. a guide groove; 42. a transition bevel; 43. erecting the wall of the tank; 44. a chute wall; 45. a locking groove; 5. a tooth post; 51. a guide rail; 511. a guide ramp; 52. a flange; 53. a compression tooth; 6. a spring; 7. closing the plate; 8. a chassis; 9. stopping the rotation seat; 10. a locking device; 11. a turntable body.
Detailed Description
The utility model discloses an embodiment of well mobile crane is shown in fig. 1 and 2, and mobile crane includes chassis 8 and the revolving platform of setting on chassis 8, and the revolving platform includes revolving platform body 11 and installs locking device 10 on revolving platform body 11, is fixed with on the chassis 8 and ends the seat 9 of changeing, is provided with open-top's locking hole on the seat 9 of changeing only.
As shown in fig. 3 and 4, the locking device 10 includes a sleeve 2 fixed on the rotary table body 11 and having an axis extending in the vertical direction, and a pressing member 1 capable of moving up and down is mounted on the sleeve 2, as shown in fig. 5, the pressing member 1 includes an upper pressing head 11 and a gear ring 12 fixed at the bottom of the pressing head, and the gear ring 12 is provided with pressing teeth 13 having a downward tooth tip, as shown in fig. 3, the gear ring 12 is located in the sleeve 2, and the pressing head 11 penetrates through the sleeve 2.
The top end of the sleeve 2 is a closed end, the bottom end is an open end, the open end can facilitate the installation of parts into the sleeve, and the closed end is provided with a through hole for the pressing head 11 to penetrate out. The outer diameter of the gear ring 12 is larger than that of the pressing head 11, and the top surface of the gear ring 12 is in stop fit with the top of the sleeve 2, so that the pressing piece 1 is prevented from being separated from the sleeve.
As shown in fig. 3, a pin shaft capable of moving up and down is further installed on the sleeve 2, the upper portion of the pin shaft is located in the sleeve 2, and the bottom portion of the pin shaft penetrates through the sleeve 2 to form an insertion portion for being inserted into a locking hole on the rotation stop block 9. The round pin axle includes round pin axle body 3 and fixes the tooth post 5 at round pin axle body 3 top, tooth post 5 is located sleeve 2, as shown in fig. 7, tooth post 5 is whole to be bottom-closed, open-top's tubbiness structure, the top of tooth post 5 is provided with a plurality of pressurized teeth 53, the bottom of tooth post 5 has flange 52, the external diameter of flange 52 is greater than the external diameter of round pin axle body 3, be provided with three guide rail 51 that extend from top to bottom along the circumferencial direction equipartition on the flange 52, guide rail 51 is located pressurized teeth 53's outside, and guide rail 51's top surface slope sets up, constitute guide inclined plane 511.
A fixed sleeve 4 is fixed at the top in the sleeve 2, as shown in fig. 3, the gear ring 12 and the tooth post 5 are both positioned in the fixed sleeve 4, and the flange 52 on the tooth post 5 is matched with the bottom of the fixed sleeve 4 in a stop way. As shown in fig. 6, the side walls of the fixing sleeve 4 are provided with three guide grooves 41 which are matched with the guide rails 51 in a guiding manner in the up-down direction, the guide grooves 41 are uniformly distributed in the circumference, and the guide grooves 41 are enclosed by long side walls, short side walls and a top wall to form a U-shaped structure with an opening facing downwards. The side wall of the fixing sleeve 4 is also provided with locking grooves 45 arranged alternately with the guide grooves 41 in the circumferential direction, the locking grooves 45 being surrounded by vertical groove walls 43 and inclined groove walls 44 having a gradient corresponding to the inclination of the guide inclined surfaces 511, the locking grooves 45 having a groove depth smaller than that of the guide grooves 41. The long side wall of the guide groove 41 is directly connected to the inclined groove wall 44 of the locking groove 45, a transition slope 42 is provided between the vertical groove wall 43 of the locking groove 45 and the short side wall of the guide groove 41, and the slope of the transition slope 42 is the same as the slope of the guide slope 511.
An elastic element is arranged in the sleeve 2, as shown in fig. 3, the elastic element in this embodiment is a spring 6 sleeved outside the pin shaft body 3, after the parts in the sleeve 2 are mounted, a sealing plate 7 is fixed on the open end at the bottom of the sleeve 2, so that the spring 6 is in a pre-compression state, one end of the spring 6 abuts against the sealing plate 7, and the other end abuts against the bottom surface of the tooth post 5. Therefore, when the tooth post 5 moves downwards, the spring 6 is compressed, and the bottom surface of the tooth post 5 forms a pressing structure for compressing the spring 6.
Since the locking groove 45 has a smaller groove depth than the guide groove 41, when the guide rail 51 is located in the guide groove 41, the tooth post 5 is at the uppermost position under the force of the spring 6, and the insertion portion of the pin is in the retracted state, i.e., the pin is in the retracted position. When the guide rail 51 is located in the locking groove 45, the toothed column 5 is held in the locking groove 45 under the force of the spring 6, with the insertion portion of the pin in the extended state, i.e. the pin is in the extended position. When the pin shaft is positioned at the extension station, the insertion part of the pin shaft can be inserted into the locking hole on the rotation stopping seat 9 to realize the locking of the rotary table, and when the pin shaft is positioned at the retraction station, the insertion part of the pin shaft is withdrawn from the locking hole to realize the unlocking.
The switching of the pin shaft between the retracting station and the extending station needs to be realized by the matching of the jacking teeth 13 and the pressure receiving teeth 53, the tooth tips of the jacking teeth 13 form jacking parts, the side surfaces of the pressure receiving teeth 53 form pressure receiving inclined surfaces matched with the tooth tips of the jacking teeth 13, and therefore when the jacking teeth 13 push the pressure receiving inclined surfaces downwards, the tooth columns 5 are subjected to downward thrust and circumferential component force generated under the action of the inclined surfaces.
For example, during the transition of the pin shaft from the retracting station to the extending station, the pressing head 11 is pressed downwards to push the tooth tip of the pressing tooth 13 downwards to push the pressed inclined surface, the guide rail 51 moves downwards along the guide groove 41, and after the guide rail 51 is separated from the long side wall of the guide groove 41, the guide rail 51 slides into the locking groove 45 under the force component of the inclined surface, the elastic force of the spring 6 and the guidance of the inclined groove wall 44, that is, the tooth post 5 rotates clockwise relative to the fixed sleeve 4 in fig. 7. Then, in the process of the pin shaft transitioning from the extending station to the retracting station, the pressing head 11 is pressed downwards to enable the tooth tip of the pressing tooth 13 to push the pressed inclined surface downwards, and after the guide rail 51 is separated from the vertical groove wall 43 of the locking groove, the guide rail 51 slides into the next guide groove 41 under the guidance of the inclined surface component force, the elastic force of the spring 6 and the transition inclined surface 42.
Therefore, the utility model provides a locking device is as long as press the press head, and the round pin axle can switch in turn between two stations, need not change and press position and direction, and it is very convenient to operate.
In other embodiments of the mobile crane, the pressing element can also be integrally formed.
In other embodiments of the crane, the bottom end of the sleeve may be a closed end, and the top end may be an open end, the through hole in the closed end is used for the insertion portion of the pin to pass through, all the components are loaded into the sleeve from the top end, and finally the sealing plate is fixed to the top end.
In other embodiments of the crane, both ends of the sleeve may be open ends, and parts may be loaded from either end, and finally, closing plates may be fixed to both ends.
In other embodiments of the automobile crane, the sleeve is not provided with a fixed sleeve, and at the moment, the inner wall of the sleeve can be directly processed with a guide groove, a locking groove and a transition inclined plane, so that the fixed sleeve is omitted.
In other embodiments of the motor vehicle crane, the tooth post may also be solid instead of a barrel-shaped structure.
In other embodiments of the truck crane, the tooth post and the pin body may be integrally formed, that is, the pin is a single piece.
In other embodiments of the mobile crane, the spring element may also be rubber instead of a spring.
In other embodiments of the mobile crane, the pressing structure of the compression elastic element arranged on the pin shaft may be a step surface or a protrusion arranged on the pin shaft instead of the bottom surface of the tooth column.
In other embodiments of the automobile crane, the top of the pin shaft may not be provided with a pressed tooth, that is, the top of the tooth column is not provided with a pressed tooth, the tooth column is only provided with a guide rail, at this time, the pressing tooth can directly press the top surface of the guide rail, that is, the top surface of the guide rail forms a pressed inclined surface, the effect is the same, the guide rail can be pressed to move downwards, and a circumferential component force can be generated.
In other embodiments of the truck crane, the number of the locking grooves and the guide grooves may be two, four or more according to the size of the locking grooves and the guide grooves and the size of the sleeve, of course, the number of the guide rails corresponds to the number of the guide rails, and the number and the size of the jacking portions also need to be changed according to the change of the locking grooves and the guide grooves.
In other embodiments of the truck crane, a locking hole can be directly machined on the underframe, so that a rotation stopping seat is omitted.
The utility model discloses the embodiment of well crane revolving platform that has locking device is shown in fig. 1~ 7, and crane revolving platform that has locking device is the same with the revolving platform in the above-mentioned mobile crane embodiment, and repeated description is no longer repeated here.
Claims (10)
1. The utility model provides a hoist revolving platform with locking device, includes the revolving platform body and installs the locking device on the revolving platform body, its characterized in that: the locking device comprises a sleeve fixed on the rotary table body and extending along the vertical direction, a pressing piece capable of moving up and down is installed on the sleeve, the bottom of the pressing piece is positioned in the sleeve, the top of the pressing piece penetrates through the sleeve to form a pressing head, a pin shaft capable of moving up and down is also installed on the sleeve, the upper portion of the pin shaft is positioned in the sleeve, the bottom of the pin shaft penetrates through the sleeve to form an insertion portion inserted into a locking hole in the chassis, an elastic piece is arranged in the sleeve, a downward pressing structure for compressing the elastic piece when the pin shaft moves down is arranged on the pin shaft, a plurality of guide rails extending up and down are arranged on the outer circumferential surface of the top of the pin shaft at intervals, a guide groove which is in guiding fit with the guide rails in the vertical direction is arranged in the sleeve, a locking groove which is alternately arranged in the circumferential direction with the guide groove is also arranged in the sleeve, the top surface, the guide groove is of a U-shaped structure with a downward opening surrounded by a long side wall, a short side wall and a top wall, wherein the long side wall of the guide groove is directly connected with the chute wall of the locking groove, a transition inclined plane is arranged between the vertical groove wall of the locking groove and the short side wall of the guide groove, the inclination of the transition inclined plane is consistent with that of the top surface of the guide rail, the pin shaft is provided with an extending station when the guide rail is positioned in the locking groove and a retracting station when the guide rail is positioned in the guide groove, the bottom of the pressing piece is provided with a plurality of pressing parts at intervals for pressing the top of the pin shaft, and the top of the; in the process that the pin shaft is transited from the retracting station to the extending station, the pressing head is pressed downwards to enable the jacking part to push the pressed inclined plane downwards, so that the guide rail moves downwards along the guide groove, and after the guide rail is separated from the long side wall of the guide groove, the guide rail slides into the locking groove under the guidance of the inclined plane component force, the elastic force of the elastic piece and the inclined groove wall; and when the guide rail is separated from the vertical groove wall of the locking groove, the guide rail slides into the guide groove under the guide of the slope component force, the elastic force of the elastic piece and the transition slope.
2. The crane turret with locking device of claim 1, wherein: the bottom of the pressing piece is provided with a plurality of jacking teeth at intervals, the jacking portion is composed of tooth tips of the jacking teeth, the top of the pin shaft is provided with pressed teeth, the pressed inclined plane is composed of side faces of the pressed teeth, and the guide rail is located outside the pressed teeth.
3. The crane turret with locking device of claim 2, wherein: the pin shaft comprises a pin shaft body and a tooth column fixed at the top of the pin shaft body, the outer diameter of the tooth column is larger than that of the pin shaft body, the pressing structure is composed of the bottom surface of the tooth column, and the pressed teeth and the guide rail are arranged on the tooth column.
4. The crane turret with locking device according to any one of claims 1 to 3, wherein: the sleeve internal fixation has fixed cover, guide slot, locking groove and transition inclined plane all set up on fixed sheathe.
5. The crane turret with locking device according to any one of claims 1 to 3, wherein: one end of the sleeve is a closed end, the other end of the sleeve is an open end, a through hole for the insertion part of the pin shaft or the penetrating of the pressing head of the pressing piece is formed in the closed end, and a sealing plate is fixed at the open end after the locking device is assembled.
6. The utility model provides an automobile crane, includes the frame and sets up the revolving platform on the frame, and the revolving platform includes the revolving platform body and installs the locking device on the revolving platform body, its characterized in that: the locking device comprises a sleeve fixed on the rotary table body and extending along the vertical direction, a pressing piece capable of moving up and down is installed on the sleeve, the bottom of the pressing piece is positioned in the sleeve, the top of the pressing piece penetrates through the sleeve to form a pressing head, a pin shaft capable of moving up and down is also installed on the sleeve, the upper portion of the pin shaft is positioned in the sleeve, the bottom of the pin shaft penetrates through the sleeve to form an insertion portion inserted into a locking hole in the chassis, an elastic piece is arranged in the sleeve, a downward pressing structure for compressing the elastic piece when the pin shaft moves down is arranged on the pin shaft, a plurality of guide rails extending up and down are arranged on the outer circumferential surface of the top of the pin shaft at intervals, a guide groove which is in guiding fit with the guide rails in the vertical direction is arranged in the sleeve, a locking groove which is alternately arranged in the circumferential direction with the guide groove is also arranged in the sleeve, the top surface, the guide groove is of a U-shaped structure with a downward opening surrounded by a long side wall, a short side wall and a top wall, wherein the long side wall of the guide groove is directly connected with the chute wall of the locking groove, a transition inclined plane is arranged between the vertical groove wall of the locking groove and the short side wall of the guide groove, the inclination of the transition inclined plane is consistent with that of the top surface of the guide rail, the pin shaft is provided with an extending station when the guide rail is positioned in the locking groove and a retracting station when the guide rail is positioned in the guide groove, the bottom of the pressing piece is provided with a plurality of pressing parts at intervals for pressing the top of the pin shaft, and the top of the; in the process that the pin shaft is transited from the retracting station to the extending station, the pressing head is pressed downwards to enable the jacking part to push the pressed inclined plane downwards, so that the guide rail moves downwards along the guide groove, and after the guide rail is separated from the long side wall of the guide groove, the guide rail slides into the locking groove under the guidance of the inclined plane component force, the elastic force of the elastic piece and the inclined groove wall; and when the guide rail is separated from the vertical groove wall of the locking groove, the guide rail slides into the guide groove under the guide of the slope component force, the elastic force of the elastic piece and the transition slope.
7. The mobile crane of claim 6, wherein: the bottom of the pressing piece is provided with a plurality of jacking teeth at intervals, the jacking portion is composed of tooth tips of the jacking teeth, the top of the pin shaft is provided with pressed teeth, the pressed inclined plane is composed of side faces of the pressed teeth, and the guide rail is located outside the pressed teeth.
8. The mobile crane of claim 7, wherein: the pin shaft comprises a pin shaft body and a tooth column fixed at the top of the pin shaft body, the outer diameter of the tooth column is larger than that of the pin shaft body, the pressing structure is composed of the bottom surface of the tooth column, and the pressed teeth and the guide rail are arranged on the tooth column.
9. The mobile crane according to any one of claims 6 to 8, wherein: the sleeve internal fixation has fixed cover, guide slot, locking groove and transition inclined plane all set up on fixed sheathe.
10. The mobile crane according to any one of claims 6 to 8, wherein: one end of the sleeve is a closed end, the other end of the sleeve is an open end, a through hole for the insertion part of the pin shaft or the penetrating of the pressing head of the pressing piece is formed in the closed end, and a sealing plate is fixed at the open end after the locking device is assembled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921130625.4U CN210683029U (en) | 2019-07-18 | 2019-07-18 | Crane revolving platform with locking device and automobile crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921130625.4U CN210683029U (en) | 2019-07-18 | 2019-07-18 | Crane revolving platform with locking device and automobile crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210683029U true CN210683029U (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921130625.4U Expired - Fee Related CN210683029U (en) | 2019-07-18 | 2019-07-18 | Crane revolving platform with locking device and automobile crane |
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| Country | Link |
|---|---|
| CN (1) | CN210683029U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114567981A (en) * | 2022-02-28 | 2022-05-31 | 长沙普洛电气设备有限公司 | Electrical cabinet convenient to disassemble |
-
2019
- 2019-07-18 CN CN201921130625.4U patent/CN210683029U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114567981A (en) * | 2022-02-28 | 2022-05-31 | 长沙普洛电气设备有限公司 | Electrical cabinet convenient to disassemble |
| CN114567981B (en) * | 2022-02-28 | 2023-11-24 | 长沙普洛电气设备有限公司 | Electrical cabinet convenient to dismantle |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200605 |
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| CF01 | Termination of patent right due to non-payment of annual fee |