CN204434138U - Jib structure and construction machinery and equipment - Google Patents
Jib structure and construction machinery and equipment Download PDFInfo
- Publication number
- CN204434138U CN204434138U CN201420832514.9U CN201420832514U CN204434138U CN 204434138 U CN204434138 U CN 204434138U CN 201420832514 U CN201420832514 U CN 201420832514U CN 204434138 U CN204434138 U CN 204434138U
- Authority
- CN
- China
- Prior art keywords
- telescopic boom
- dead bolt
- lockout mechanism
- hold
- arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model provides a kind of jib structure and construction machinery and equipment.Jib structure comprises hold-down arm and auxiliary assembly, auxiliary assembly comprises telescopic boom and basic arm, basic arm has hollow cavity, telescopic boom comprises at least one telescopic boom joint sheathed step by step, at least one telescopic boom saves telescopically step by step and is arranged in hollow cavity, and telescopic boom is stretched out by the first end of basic arm, second end and the hold-down arm of basic arm are connected to make auxiliary assembly have folded state and deployed condition relative to hold-down arm pivotly, jib structure also comprises lockout mechanism, lockout mechanism has the lock position of restriction telescopic boom extend action, do not interfere the unlocked position of telescopic boom extend action, and lockout mechanism makes lockout mechanism convert at unlocked position and lock position according to the position relationship between hold-down arm and auxiliary assembly, wherein, at folded state, lockout mechanism is in lock position, in deployed condition, lockout mechanism is in the unlocked position, there is control complexity low, the feature that safety is good.
Description
Technical field
The utility model relates to technical field of engineering machinery, more specifically, relates to a kind of jib structure and construction machinery and equipment.
Background technology
By the restriction of installing space, folding-jib lorry-mounted crane jib structure when off working state is in folded state.During work, after first need launching hold-down arm, just can carry out telescopic boom extend action, otherwise damage can be caused to hoisting crane itself and surrounding objects.
Method conventional is at present that hydra-electric jointly controls, go to realize the control to hydraulic component by electrical control program, thus the sequencing that restriction telescopic boom luffing, (hold-down arm fixes non-telescope action) and telescopic boom stretch out, to realize the operation launching jib structure.But, when hydra-electric jointly control jib structure sequence of operation make mistakes time, serious safety misadventure will be caused, the error-preventing method thus adopting hydra-electric to jointly control jib structure sequence of operation at present exist control principle complexity, cost high, easily make mistakes, the problem such as safe reliability is low, break down maintenance difficulty is large.
Utility model content
The utility model aims to provide a kind of jib structure and construction machinery and equipment, there is to solve in prior art the error-preventing method relying on hydra-electric to jointly control jib structure sequence of operation the problem that control complexity is high, safe reliability is low.
For solving the problems of the technologies described above, according to an aspect of the present utility model, provide a kind of jib structure, comprise hold-down arm and auxiliary assembly, auxiliary assembly comprises telescopic boom and basic arm, basic arm has hollow cavity, telescopic boom comprises at least one telescopic boom joint sheathed step by step, at least one telescopic boom saves telescopically step by step and is arranged in hollow cavity, and telescopic boom is stretched out by the first end of basic arm, second end and the hold-down arm of basic arm are connected to make auxiliary assembly have folded state and deployed condition relative to hold-down arm pivotly, jib structure also comprises lockout mechanism, lockout mechanism has the lock position of restriction telescopic boom extend action, do not interfere the unlocked position of telescopic boom extend action, and lockout mechanism makes lockout mechanism convert at unlocked position and lock position according to the position relationship between hold-down arm and auxiliary assembly, wherein, at folded state, lockout mechanism is in lock position, in deployed condition, lockout mechanism is in the unlocked position.
Further, lockout mechanism comprises dead bolt, and dead bolt has keyed end and drives section, drives section abut with hold-down arm or be connected, with adjusted by the position relationship between hold-down arm and auxiliary assembly dead bolt keyed end and inside the lockup state that saves of telescopic boom.
Further, the driving section of dead bolt is fixedly connected with hold-down arm, the setting and the relative basic arm of the keyed end of dead bolt and telescopic boom slide; When lockout mechanism is in lock position, the keyed end of dead bolt is plugged in the radial direction through hole of basic arm and telescopic boom successively; When lockout mechanism is in the unlocked position, the keyed end of dead bolt and telescopic boom depart from.
Further, lockout mechanism also comprises assembly of exerting pressure, assembly of exerting pressure abutting is arranged between the driving section of hold-down arm and dead bolt, section is driven to comprise the coupling end be oppositely arranged with keyed end, coupling end is connected pivotly with basic arm, hold-down arm is swung by the relative basic arm of keyed end of Component driver dead bolt of exerting pressure and telescopic boom, and the keyed end of dead bolt has the first Access Division, and the inside of telescopic boom has second Access Division that coordinate spacing with the first Access Division.
Further, first Access Division is the grab of the keyed end being arranged on dead bolt, second Access Division comprises the positioning plate be arranged on correspondingly on each telescopic boom joint, and each positioning plate is arranged in order along the bearing of trend of telescopic boom, the positioning plate hooking that grab and the telescopic boom of inner side save or be separated.
Further, each positioning plate is positioned at the tail end of corresponding telescopic boom joint, and positioning plate has the recess for dodging dead bolt.
Further, lockout mechanism also comprises: mounting bracket, and mounting bracket is fixedly connected with basic arm; Drive-connecting shaft, the coupling end of dead bolt is connected with mounting bracket rotationally by drive-connecting shaft.
Further, assembly of exerting pressure comprises: orienting sleeve, and orienting sleeve is fixedly connected with basic arm; Exert pressure bar, bar of exerting pressure is slidably arranged in orienting sleeve, and the first end of bar of exerting pressure abuts with hold-down arm or departs from; When lockout mechanism is in lock position, the first end of bar of exerting pressure abuts with hold-down arm, and the driving section of the two port dead bolt of bar of exerting pressure applies pressure to make the spacing clamping in the first Access Division and the second Access Division of dead bolt; When lockout mechanism is in the unlocked position, the first end of bar of exerting pressure and hold-down arm depart from.
Further, assembly of exerting pressure also comprises the first reposition element, and bar of exerting pressure applies pressure by the first reposition element to the driving section of dead bolt.
Further, the second end of bar of exerting pressure the second end had for the bar that prevents from exerting pressure slips into the limit baffle ring in orienting sleeve, limit baffle ring moves in the space all the time between the side of the close dead bolt of orienting sleeve and dead bolt, that exerts pressure bar stretches in the first reposition element at least partially, and the first end of the first reposition element abuts with limit baffle ring, the second end of the first reposition element abuts with the driving section of dead bolt.
Further, lockout mechanism also comprises the reset assembly for providing restoring force for dead bolt, and reset assembly is connected with basic arm, and reset assembly abuts with the driving section of dead bolt, and the reset direction of reset assembly is reverse with the direction of exerting pressure of assembly of exerting pressure.
Further, reset assembly comprises: locating part, and locating part is fixedly connected with basic arm; Second reposition element, the second reposition element is arranged between the driving section of locating part and dead bolt.
Further, reset assembly also comprises for preventing the second reposition element from the registration mast of slippage locating part, and registration mast is arranged on locating part, and the second reposition element be set on registration mast at least partially.
According to another aspect of the present utility model, provide a kind of construction machinery and equipment, comprise jib structure, jib structure is above-mentioned jib structure.
Auxiliary assembly in the utility model comprises telescopic boom and basic arm, basic arm has hollow cavity, telescopic boom comprises at least one telescopic boom joint sheathed step by step, at least one telescopic boom saves telescopically step by step and is arranged in hollow cavity, and telescopic boom is stretched out by the first end of basic arm, second end and the hold-down arm of basic arm are connected to make auxiliary assembly have folded state and deployed condition relative to hold-down arm pivotly, lockout mechanism has the lock position of restriction telescopic boom extend action, do not interfere the unlocked position of telescopic boom extend action, and lockout mechanism makes lockout mechanism convert at unlocked position and lock position according to the position relationship between hold-down arm and auxiliary assembly, wherein, at folded state, lockout mechanism is in lock position, in deployed condition, lockout mechanism is in the unlocked position.Owing to being provided with lockout mechanism, thus when jib structure is positioned at folded state, basic arm and telescopic boom, by lockout mechanism locking, thus effectively avoid the safety misadventure that causes telescopic boom surprisingly to stretch out because of control system mistake and cause; Similarly, when jib structure needs to open, lockout mechanism can change along with the position relationship between hold-down arm and auxiliary assembly and move that basic arm and telescopic boom are unlocked, thus ensure that telescopic boom can carry out extend action smoothly, and then jib structure existed control that complexity is low, safety good, not easily make mistakes, feature that reliability of service is high.Meanwhile, the jib structure in the utility model also has that structure is simple, the feature of low cost of manufacture.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
The schematic diagram of jib structure when Fig. 1 lockout mechanism diagrammatically illustrated in the utility model is in the lock state;
Fig. 2 diagrammatically illustrates the A place partial enlarged drawing in Fig. 1;
Fig. 3 diagrammatically illustrates the B place partial enlarged drawing in Fig. 2;
Fig. 4 diagrammatically illustrates the C place partial enlarged drawing in Fig. 2;
The schematic diagram of jib structure when Fig. 5 lockout mechanism diagrammatically illustrated in the utility model is in released state; And
Fig. 6 diagrammatically illustrates the D place partial enlarged drawing in Fig. 5.
Reference numeral in figure: 10, telescopic boom; 12, the second Access Division; 20, basic arm; 30, hold-down arm; 40, dead bolt; 41, the first Access Division; 50, to exert pressure assembly; 51, orienting sleeve; 52, to exert pressure bar; 52a, limit baffle ring; 53, the first reposition element; 60, mounting bracket; 70, drive-connecting shaft; 80, reset assembly; 81, locating part; 82, the second reposition element; 83, registration mast; 90, amplitude oil cylinder.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As first aspect of the present utility model, provide a kind of jib structure.As shown in Figures 1 to 6, jib structure, comprise hold-down arm 30, auxiliary assembly and lockout mechanism, auxiliary assembly comprises telescopic boom 10 and basic arm 20, basic arm 20 has hollow cavity, telescopic boom 10 comprises at least one telescopic boom joint sheathed step by step, at least one telescopic boom saves telescopically step by step and is arranged in hollow cavity, and telescopic boom 10 is stretched out by the first end of basic arm 20, second end and the hold-down arm 30 of basic arm 20 are connected to make auxiliary assembly have folded state and deployed condition relative to hold-down arm 30 pivotly, lockout mechanism has the lock position of restriction telescopic boom 10 extend action, do not interfere the unlocked position of telescopic boom 10 extend action, and lockout mechanism makes lockout mechanism convert at unlocked position and lock position according to the position relationship between hold-down arm 30 and auxiliary assembly, wherein, at folded state, lockout mechanism is in lock position, in deployed condition, lockout mechanism is in the unlocked position.
Owing to being provided with lockout mechanism, thus when jib structure is positioned at folded state basic arm 20 and telescopic boom 10 by lockout mechanism locking, thus the safety misadventure effectively avoided causing unexpected the stretching out of telescopic boom 10 because of control system mistake and cause; Similarly, when jib structure needs to open, lockout mechanism can change along with the position relationship between hold-down arm 30 and auxiliary assembly and move that basic arm 20 and telescopic boom 10 are unlocked, thus ensure that telescopic boom 10 can carry out extend action smoothly, and then jib structure existed control that complexity is low, safety good, not easily make mistakes, feature that reliability of service is high.Meanwhile, the jib structure in the utility model also has that structure is simple, the feature of low cost of manufacture.
Lockout mechanism in the utility model comprises dead bolt 40, dead bolt 40 has keyed end and drives section, drive section abut with hold-down arm 30 or be connected, with adjust by position relationship between hold-down arm 30 and auxiliary assembly dead bolt 40 keyed end and inside the lockup state that saves of telescopic boom.In the utility model, during change in location between described hold-down arm 30 and auxiliary assembly, the change in location of dead bolt 40 can be caused, thus make dead bolt 40 and the first lock hole, the position relationship of the second lock hole changes, and then realizes the operation of locking or unblock.
In a not shown preferred implementation, the driving section of dead bolt 40 is fixedly connected with hold-down arm 30, and the relative basic arm 20 of the keyed end of dead bolt 40 and telescopic boom 10 slide and arrange; When lockout mechanism is in lock position, the keyed end of dead bolt 40 is plugged in the radial direction through hole of basic arm 20 and telescopic boom 10 successively; When lockout mechanism is in the unlocked position, keyed end and the telescopic boom 10 of dead bolt 40 depart from.When jib structure is in folded state, the keyed end of dead bolt 40 stretches in basic arm 20 and telescopic boom 10 and radial direction through hole, thus by telescopic boom 10 and basic arm 20 locking.When jib structure is in open mode, the keyed end of dead bolt 40 skids off by the radial direction through hole of telescopic boom 10, thus basic arm 20 can relative movement realization unblock relatively to make telescopic boom 10.
In preferred implementation as depicted in figs. 1 and 2, lockout mechanism also comprises assembly 50 of exerting pressure, assembly 50 of exerting pressure abutting is arranged between the driving section of hold-down arm 30 and dead bolt 40, section is driven to comprise the coupling end be oppositely arranged with keyed end, coupling end is connected pivotly with basic arm 20, hold-down arm 30 drives the relative basic arm 20 of the keyed end of dead bolt 40 and telescopic boom 10 to swing by assembly 50 of exerting pressure, the keyed end of dead bolt 40 has the first Access Division 41, and the inside of telescopic boom 10 has second Access Division 12 that coordinate spacing with the first Access Division 41.Because assembly 50 of exerting pressure abuts between the driving section being arranged on hold-down arm 30 and dead bolt 40, thus when the relative distance between hold-down arm 30 and basic arm 20 reduces, hold-down arm 30 can force assembly 50 of exerting pressure to oppress the driving section of dead bolt 40, to make dead bolt 40, basic arm 20 and telescopic boom 10 swing relatively, when the second Access Division 12 clamping with telescopic boom 10 of the first Access Division 41 of the keyed end of dead bolt 40, jib structure is by locking, and now telescopic boom 10 cannot stretch out from basic arm 20 is favorite.
In preferred implementation as shown in Figure 2, first Access Division 41 is for being arranged on the grab of the keyed end of dead bolt 40, second Access Division 12 comprises the positioning plate be arranged on correspondingly on each telescopic boom joint, each positioning plate is arranged in order along the bearing of trend of telescopic boom 10, the positioning plate hooking that grab and the telescopic boom of inner side save or be separated.Locate because telescopic boom 10 and basic arm 20 are coordinated by hooking, thus ensure that the locking reliability of the two, thus improve the safety in utilization of jib structure.Or the second Access Division 12 can also be the part in the inwall of telescopic boom 10, and the grab of the keyed end of dead bolt 40 coordinates with the inwall hooking of telescopic boom 10.Preferably, positioning plate can also be the afterbody brace panel of telescopic boom 10.
Certainly, second Access Division 12 can also be that flexible clamping is protruding, and this flexible clamping projection has buckling groove, and the first Access Division 41 is the clamping block of the keyed end of dead bolt 40, when the clamping block of dead bolt 40 is fastened in the buckling groove of telescopic boom 10, locate to make telescopic boom 10 and basic arm 20 clamping.
Preferably, each positioning plate is positioned at the tail end of corresponding telescopic boom joint, and positioning plate has the recess for dodging dead bolt 40.Because the bearing of trend of each positioning plate along telescopic boom 10 is arranged in order, and each positioning plate is positioned at the tail end of corresponding telescopic boom joint.It should be noted that, stretching out of each telescopic boom joint is sequentially not controlled, as long as lockout mechanism is in the unlocked position, each telescopic boom joint is all extended.
Lockout mechanism in the utility model also comprises mounting bracket 60 and drive-connecting shaft 70, and the coupling end that mounting bracket 60 and basic arm 20 are fixedly connected with dead bolt 40 is connected with mounting bracket 60 (please refer to Fig. 1, Fig. 2 and Fig. 4) rotationally by drive-connecting shaft 70.Because dead bolt 40 is fixedly connected with basic arm 20 by mounting bracket 60, what thus ensure that dead bolt 40 arranges stability, also assures that the connection reliability of dead bolt 40 and basic arm 20, and the motion making dead bolt 40 more freely, adds the motion space of dead bolt 40 simultaneously.Because the coupling end of dead bolt 40 is connected with mounting bracket 60 rotationally by drive-connecting shaft 70, thus ensure that the rotation reliability of dead bolt 40.
In preferred implementation as shown in Figures 2 and 3, assembly 50 of exerting pressure comprises orienting sleeve 51 and bar 52 of exerting pressure, and orienting sleeve 51 is fixedly connected with basic arm 20; Bar 52 of exerting pressure is slidably arranged in orienting sleeve 51, and the first end of bar 52 of exerting pressure abuts with hold-down arm 30 or departs from; When lockout mechanism is in lock position, the first end of bar 52 of exerting pressure abuts with hold-down arm 30, and the driving section of the two port dead bolt 40 of bar 52 of exerting pressure applies pressure to make the first Access Division 41 and the second spacing clamping in Access Division 12 of dead bolt 40; When lockout mechanism is in the unlocked position, first end and the hold-down arm 30 of bar 52 of exerting pressure depart from.Owing to being provided with orienting sleeve 51, thus effectively plan the motion path of bar 52 of exerting pressure, thus ensure that the pressing stability of bar 52 of exerting pressure.
Preferably, assembly 50 of exerting pressure also comprises the first reposition element 53, and bar 52 of exerting pressure applies pressure (please refer to Fig. 2 and Fig. 3) by the driving section of the first reposition element 53 pairs of dead bolts 40.Owing to being provided with the first reposition element 53, thus when the distance between hold-down arm 30 and basic arm 20 increases, the application force that hold-down arm 30 is applied to bar 52 of exerting pressure can reduce, bar 52 of exerting pressure can to hold-down arm 30 1 lateral movement under the effect of the first reposition element 53, thus there is the power of abutting all the time within the specific limits with hold-down arm 30 in the bar 52 that makes to exert pressure, namely ensure that hold-down arm 30 certain abuts oppressive force with having all the time between dead bolt 40, avoid dead bolt 40 arbitrary motion.Simultaneously, due to the first reposition element 53 abut be arranged on bar 52 of exerting pressure between the second end and dead bolt 40, thus the oppressive force of bar 52 of making to exert pressure is applied on dead bolt 40 in a flexible manner, thus avoid hard contact or hard impact to cause the problems such as dead bolt 40 weares and teares, fracture, and then extend the service life of dead bolt 40.Preferably, the first reposition element 53 is elastic reset member.Further, elastic reset member is spring, rubber pad etc.
In preferred implementation as shown in Figures 2 and 3, the second end of bar 52 of exerting pressure the second end had for the bar 52 that prevents from exerting pressure slips into the limit baffle ring 52a in orienting sleeve 51, limit baffle ring 52a moves in the space all the time between the side of the close dead bolt 40 of orienting sleeve 51 and dead bolt 40, that exerts pressure bar 52 stretches in the first reposition element 53 at least partially, and the first end of the first reposition element 53 abuts with limit baffle ring 52a, the second end of the first reposition element 53 abuts with the driving section of dead bolt 40.Owing to being provided with limit baffle ring 52a, thus not only effectively spacing avoiding is carried out to the moving displacement of bar 52 of exerting pressure and exert pressure bar 52 from slippage in orienting sleeve 51, also assures that the first reposition element 53 can reset or cushion tensile force exerting pressure to provide between bar 52 and dead bolt 40 all the time, thus ensure that the locking reliability of jib structure.
In a not shown preferred implementation, the first end of bar 52 of exerting pressure also is provided with limit baffle ring 52a.Because the two ends being provided with bar 52 of exerting pressure are provided with limit baffle ring 52a, thus orienting sleeve 51 is made to be in the spacing space of two limit baffle ring 52a all the time, no matter thus the bar 52 that ensures to exert pressure be in which kind of position all can not by slippage on orienting sleeve 51, and then ensure that exert pressure bar 52 and orienting sleeve 51 coordinate reliability.
Lockout mechanism in the utility model also comprises the reset assembly 80 for providing restoring force for dead bolt 40, reset assembly 80 is connected with basic arm 20, reset assembly 80 abuts with the driving section of dead bolt 40, and the reset direction of reset assembly 80 is reverse with the direction of exerting pressure of assembly 50 of exerting pressure.Owing to being provided with reset assembly 80, thus when the relative position between hold-down arm 30 and auxiliary assembly increases, and the oppressive force of assembly 50 of exerting pressure is when being less than reset assembly 80 reset force, dead bolt 40 understands the driving that be reset under the effect of reset assembly 80, now the first Access Division 41 of dead bolt 40 departs from gradually with the second Access Division 12 of telescopic boom 10, and finally make the first Access Division 41 of dead bolt 40 depart from completely with the second Access Division 12 of telescopic boom 10, now, telescopic boom 10 and basic arm 20 unlock completely, and telescopic boom 10 can by protruding in basic arm 20.
Preferably, reset assembly 80 comprises locating part 81 and the second reposition element 82, and locating part 81 is fixedly connected with basic arm 20; Between the driving section that second reposition element 82 is arranged on locating part 81 and dead bolt 40 (please refer to Fig. 2 and Fig. 4).Because the second reposition element 82 abuts between the driving section being arranged on locating part 81 and dead bolt 40, thus the second reposition element 82 is always dead bolt 40 and provides restoring force, when this restoring force is greater than the oppressive force of bar 52 of exerting pressure, dead bolt 40 is reset and lifts under the effect of the second reposition element 82.Further, the second reposition element 82 is elastic reset member.Again further, elastic reset member is spring, rubber pad etc.
Preferably, locating part 81 is postive stop baffle, and the second reposition element 82 abutting is arranged between the driving section of postive stop baffle and dead bolt 40.Because postive stop baffle can provide larger limiting platform, thus ensure that the second reposition element 82 stability is set.
In preferred implementation as shown in Figure 4, reset assembly 80 also comprises for preventing the second reposition element 82 from the registration mast 83 of slippage locating part 81, registration mast 83 is arranged on locating part 81, and being set at least partially on registration mast 83 of the second reposition element 82.In this embodiment, locating part 81 is arranged on mounting bracket 60.Locating part 81 has the postive stop baffle of dodging hole, the assembly that registration mast 83 matches for bolts and nuts, nut-welding on postive stop baffle and with to dodge hole coaxial, screw bolt passes nut and dodge hole and be threaded with postive stop baffle.Certainly, the hole wall of dodging hole of postive stop baffle can also directly be provided with the negative thread matched with bolt.Second reposition element 82 is spring, and spring housing is located at the outer peripheral edges place of the side towards dead bolt 40 of bolt, to make spring perpendicular to not easily slippage on the axis direction of bolt.
Certainly, positioning convex can also be selected to substitute registration mast 83, the outer peripheral edges of this positioning convex form located space.Or the middle part of this positioning convex has detent, this detent forms above-mentioned located space, and the second reposition element 82 can be arranged in this detent.
Preferably, jib structure also comprises amplitude oil cylinder 90, and the first end of amplitude oil cylinder 90 is connected with basic arm 20, and the second end of amplitude oil cylinder 90 is connected with hold-down arm 30 (please refer to Fig. 1 and Fig. 5).Changed to drive auxiliary module position by the action of amplitude oil cylinder 90.
As second aspect of the present utility model, provide a kind of construction machinery and equipment.Construction machinery and equipment comprises jib structure, and jib structure is above-mentioned jib structure.Because the jib structure in the utility model has lockout mechanism, telescopic boom 10 thus effectively can be avoided surprisingly to skid off the safety misadventure caused, thus improve functional reliability and the safety in utilization of construction machinery and equipment.
Preferably, construction machinery and equipment is hoisting crane.
Jib structure in the utility model is when not changing the basic structure of folding-jib lorry-mounted crane auxiliary; by arranging the lockout mechanism of pure mechanization to realize protecting the locking of auxiliary extend action; compare hydra-electric mode, the jib structure in the utility model has the advantages that structure is simple, cost is low, functional realiey is reliable and stable.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (14)
1. a jib structure, comprise hold-down arm (30) and auxiliary assembly, described auxiliary assembly comprises telescopic boom (10) and basic arm (20), described basic arm (20) has hollow cavity, described telescopic boom (10) comprises at least one telescopic boom joint sheathed step by step, at least one telescopic boom described saves telescopically step by step and is arranged in described hollow cavity, and described telescopic boom (10) is stretched out by the first end of described basic arm (20), second end and the described hold-down arm (30) of described basic arm (20) are connected to make described auxiliary assembly have folded state and deployed condition relative to described hold-down arm (30) pivotly, it is characterized in that, described jib structure also comprises lockout mechanism, described lockout mechanism has the lock position of restriction described telescopic boom (10) extend action, do not interfere the unlocked position of described telescopic boom (10) extend action, and described lockout mechanism makes described lockout mechanism convert at described unlocked position and described lock position according to the position relationship between described hold-down arm (30) and described auxiliary assembly, wherein, at described folded state, described lockout mechanism is in described lock position, in described deployed condition, described lockout mechanism is in described unlocked position.
2. jib structure according to claim 1, it is characterized in that, described lockout mechanism comprises dead bolt (40), described dead bolt (40) has keyed end and drives section, described driving section abuts with described hold-down arm (30) or is connected, the lockup state saved with the described telescopic boom of inner side with the keyed end being adjusted described dead bolt (40) by the position relationship between described hold-down arm (30) and described auxiliary assembly.
3. jib structure according to claim 2, it is characterized in that, the driving section of described dead bolt (40) is fixedly connected with described hold-down arm (30), the setting and the relatively described basic arm (20) of the keyed end of described dead bolt (40) and described telescopic boom (10) slide; When described lockout mechanism is in described lock position, the keyed end of described dead bolt (40) is plugged in the radial direction through hole of described basic arm (20) and described telescopic boom (10) successively; When described lockout mechanism is in described unlocked position, keyed end and the described telescopic boom (10) of described dead bolt (40) depart from.
4. jib structure according to claim 2, it is characterized in that, described lockout mechanism also comprises assembly of exerting pressure (50), described assembly of exerting pressure (50) abutting is arranged between the driving section of described hold-down arm (30) and described dead bolt (40), described driving section comprises the coupling end be oppositely arranged with described keyed end, described coupling end is connected pivotly with described basic arm (20), assembly (50) of exerting pressure described in described hold-down arm (30) passes through drives the relatively described basic arm (20) of the keyed end of described dead bolt (40) and described telescopic boom (10) to swing, the keyed end of described dead bolt (40) has the first Access Division (41), the inside of described telescopic boom (10) has second Access Division (12) that coordinate spacing with described first Access Division (41).
5. jib structure according to claim 4, it is characterized in that, described first Access Division (41) is for being arranged on the grab of the keyed end of described dead bolt (40), described second Access Division (12) comprises the positioning plate be arranged on correspondingly on each described telescopic boom joint, each described positioning plate is arranged in order along the bearing of trend of described telescopic boom (10), the described positioning plate hooking that described grab and the described telescopic boom of inner side save or be separated.
6. jib structure according to claim 5, is characterized in that, each described positioning plate is positioned at the tail end of corresponding described telescopic boom joint, and described positioning plate has the recess for dodging described dead bolt (40).
7. jib structure according to claim 4, is characterized in that, described lockout mechanism also comprises:
Mounting bracket (60), described mounting bracket (60) is fixedly connected with described basic arm (20);
Drive-connecting shaft (70), the coupling end of described dead bolt (40) is connected with described mounting bracket (60) rotationally by described drive-connecting shaft (70).
8. jib structure according to claim 4, is characterized in that, described in assembly (50) of exerting pressure comprising:
Orienting sleeve (51), described orienting sleeve (51) is fixedly connected with described basic arm (20);
To exert pressure bar (52), described in bar (52) of exerting pressure be slidably arranged in described orienting sleeve (51), and described in the exert pressure first end of bar (52) abut with described hold-down arm (30) or depart from;
When described lockout mechanism is in described lock position, the first end of described bar of exerting pressure (52) abuts with described hold-down arm (30), described in exert pressure bar (52) two port described in the driving section of dead bolt (40) apply pressure to make described first Access Division (41) of described dead bolt (40) and the spacing clamping of described second Access Division (12);
When described lockout mechanism is in described unlocked position, described in the exert pressure first end of bar (52) and described hold-down arm (30) depart from.
9. jib structure according to claim 8, it is characterized in that, described assembly of exerting pressure (50) also comprises the first reposition element (53), described in bar (52) of exerting pressure by described first reposition element (53), pressure is applied to the driving section of described dead bolt (40).
10. jib structure according to claim 9, it is characterized in that, second end of described bar of exerting pressure (52) the second end had for bar (52) of exerting pressure described in preventing slips into the limit baffle ring (52a) in described orienting sleeve (51), described limit baffle ring (52a) is mobile in the space between the side and described dead bolt (40) of the close described dead bolt (40) of described orienting sleeve (51) all the time, described bar of exerting pressure (52) stretch in described first reposition element (53) at least partially, and the first end of described first reposition element (53) abuts with described limit baffle ring (52a), second end of described first reposition element (53) abuts with the driving section of described dead bolt (40).
11. jib structures according to claim 4, it is characterized in that, described lockout mechanism also comprises the reset assembly (80) for providing restoring force for described dead bolt (40), described reset assembly (80) is connected with described basic arm (20), described reset assembly (80) abuts with the driving section of described dead bolt (40), the reset direction of described reset assembly (80) and the direction of exerting pressure of described assembly of exerting pressure (50) reverse.
12. jib structures according to claim 11, is characterized in that, described reset assembly (80) comprising:
Locating part (81), described locating part (81) is fixedly connected with described basic arm (20);
Second reposition element (82), described second reposition element (82) is arranged between the driving section of described locating part (81) and described dead bolt (40).
13. jib structures according to claim 12, it is characterized in that, described reset assembly (80) also comprises for preventing described second reposition element (82) from the registration mast (83) of slippage described locating part (81), described registration mast (83) is arranged on described locating part (81), and being set at least partially on described registration mast (83) of described second reposition element (82).
14. 1 kinds of construction machinery and equipments, comprise jib structure, it is characterized in that, described jib structure is the jib structure according to any one of claim 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420832514.9U CN204434138U (en) | 2014-12-24 | 2014-12-24 | Jib structure and construction machinery and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420832514.9U CN204434138U (en) | 2014-12-24 | 2014-12-24 | Jib structure and construction machinery and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204434138U true CN204434138U (en) | 2015-07-01 |
Family
ID=53602034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420832514.9U Active CN204434138U (en) | 2014-12-24 | 2014-12-24 | Jib structure and construction machinery and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204434138U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843251A (en) * | 2018-07-26 | 2018-11-20 | 天津鸿翔工程机械有限公司 | A kind of machine locking-type drilling rod |
| CN115142679A (en) * | 2021-03-31 | 2022-10-04 | 三一汽车制造有限公司 | Construction machine |
-
2014
- 2014-12-24 CN CN201420832514.9U patent/CN204434138U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843251A (en) * | 2018-07-26 | 2018-11-20 | 天津鸿翔工程机械有限公司 | A kind of machine locking-type drilling rod |
| CN115142679A (en) * | 2021-03-31 | 2022-10-04 | 三一汽车制造有限公司 | Construction machine |
| CN115142679B (en) * | 2021-03-31 | 2023-08-29 | 三一汽车制造有限公司 | Engineering machinery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204434138U (en) | Jib structure and construction machinery and equipment | |
| CN101537979B (en) | Locking pin insertion and extraction device and crane with same | |
| EP2874935B1 (en) | Jacking device | |
| EP2558399A1 (en) | Arrangement related to guiding of hoses and/or cables | |
| CN103043581A (en) | Turntable limiting device, turntable limiting device and engineering machinery | |
| CN104229675A (en) | Anti-falling mechanism and hydraulic lifting device utilizing same | |
| CN103640995A (en) | Jacking step-changing device of internal-climbing tower crane and internal-climbing tower crane | |
| CN204077831U (en) | A kind of vehicle spare tyre jacking system and vehicle | |
| CN102602829B (en) | Engineering machinery and landing leg positioning and supporting device thereof | |
| WO2017050843A1 (en) | System for quick coupling and uncoupling of a tracked unit with respect to a chassis of a tracked machine, particularly a tracked pipe laying machine | |
| CN211107958U (en) | Three-degree-of-freedom pilot operating device | |
| CN204151019U (en) | Safety dropping prevent mechanism and apply its hydraulic lifting device | |
| CN203905798U (en) | Ladder assembly and aerial ladder fire truck | |
| KR102358683B1 (en) | Tripod for chain block | |
| CN214935518U (en) | Crane rotary table with mechanical locking structure | |
| CN203891095U (en) | Novel quick change device | |
| CN102322169B (en) | Security protection device for three-dimensional parking equipment | |
| EP2969885B1 (en) | Head assembly for jacking tower | |
| CN104229690A (en) | Overhead operation platform lifting arm provided with safety monitoring device | |
| CN108675214A (en) | A kind of lifting machine column fall-preventing self-locking structure | |
| CN105484767A (en) | Jib and concrete spraying truck | |
| CN204339694U (en) | releasing tool | |
| CN2905747Y (en) | Safe lifting platform for submerged lifter | |
| CN102352878A (en) | Landing leg locking system and mobile engineering machinery | |
| CN103032450B (en) | Hinge method, hinge component and engineering mechanical equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |