CN2885806Y

CN2885806Y - Trailer crane

Info

Publication number: CN2885806Y
Application number: CN 200620031674
Authority: CN
Inventors: 高贺春
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-21
Filing date: 2006-04-21
Publication date: 2007-04-04
Anticipated expiration: 2016-04-21

Abstract

The utility model provides a towing crane, which comprises a rotating platform, a luffer, a telescopic mechanism, a cargo boom, and a cargo boom framework. Rolling wheels are provided on the horizontal supporting axle that is fixed on the cargo boom framework, a sliding sleeve is hinged on the rotating platform, the cargo boom goes through the sliding sleeve and sliding connected with the rolling wheel on the cargo boom framework. Locating holes are provided on the two sidewalls of the sliding sleeve and the two sidewalls of the bottom of the cargo boom, and when the locating holes are in a line, the cargo boom is capable of connected with the sliding sleeve via a detachable locating pin, thereby greatly shortened the length when towing the crane, and centralized the centers of gravity of all the parts of the towing crane, enhanced the stability and provided with a higher safety rates when transporting, and reduced the cost when parking in garage. The utility model is logic and compact in structure, low in cost, practical and suitable for promote.

Description

A kind of drag type hoisting crane

Technical field

The utility model relates to the lifting technique field, especially relates to a kind of drag type hoisting crane.

Background technology

Hoisting crane commonly used has polytype in the construction at present, and for the drag type hoisting crane of flexible luffing, because it is multiple functional, practical, easy to operate, and price comparison is low, and uses commonplace.Usually the crane arm root of hoisting crane and turntable hinged portion and crane arm are integrally welded, for making hoisting crane that bigger lifting altitude be arranged, crane arm must have certain length could satisfy lifting requirements, so just make that the total length of hoisting crane motoring condition is long, shorten overall length with the length that shortens crane arm joint arm, the weight of crane arm and the manufacturing cost of hoisting crane, the effect that out of reach gets twice the result with half the effort will be increased.

Drag type hoisting crane for flexible luffing, for making crane arm lift operation, between crane arm and the luffing wirerope certain angle to be arranged, for this reason, the crane arm root is articulated on the turntable of forebody usually, when towing hoisting crane, tractor truck is generally drawing the end walking that the crane arm of hoisting crane stretches out, the part of stretching out the hoisting crane chassis front end because of crane arm is long, crane arm need suitably be raised, suspension hook and heavy weight crane arm are positioned at the top of chaufeur and tractor truck, affect the safety of chaufeur and tractor truck greatly, have potential safety hazard; Because to exceed the hoisting crane chassis long for crane arm, cause body nodal point and the crane arm center of gravity not to concentrate, the height in having increased turn radius and having towed, long hoisting crane is also deposited to storehouse and is made troubles.

The utility model content

The purpose of this utility model just is to provide a kind of drag type hoisting crane, this drag type hoisting crane is after finishing crane lifting service, crane arm can slide backward recovery, shortened the length that hoisting crane tows state greatly, reduce the center of gravity of crane arm, the center of gravity of crane arm is overlapped substantially with the center of gravity of fuselage, improved hoisting crane stability and safety in transit, eliminate drag type hoisting crane many hidden dangers in the traction transportation, reduced the cost that the hoisting crane storehouse is deposited.

For achieving the above object, the utility model provides a kind of drag type hoisting crane, comprise turntable, luffing mechanism, telescoping mechanism, crane arm, the crane arm rest stand, on the horizontal supporting axle of crane arm rest stand scroll wheel is housed, a hinged slip cap on the turntable, crane arm is set in the slip cap and the scroll wheel sliding block joint on the crane arm rest stand, the slip cap two side is provided with the location slotted hole, crane arm root two side is provided with knock hole, and the knock hole that crane arm slides into crane arm is captiveed joint with slip cap by inserting the locating dowel pin of extracting with the location slotted hole correspondence position of slip cap.

Slip cap is provided with the crane arm latching device, the crane arm latching device comprises the locking eccentric shaft that is arranged on the slip cap one side madial wall, locking eccentric shaft one end that stretches out slip cap bottom or top is equipped with handle, and corresponding locking eccentric shaft handle is provided with Fixed latches on the slip cap lateral wall.

Slip cap and to be set in the cross-sectional plane of the crane arm in the slip cap rectangular.

The locking eccentric shaft that is arranged on the slip cap one side madial wall is two, places slip cap madial wall both ends.

Be fixed with L shaped pulley yoke on the crane arm aft end face, stretch out on the basifacial pulley yoke in crane arm rear end and be fixed with perpendicular sheave shaft, on the perpendicular sheave shaft pulley is housed, the wirerope sliding block joint of this pulley and telescoping mechanism, crane arm root two side arms is provided with connecting bore, be set with the joint arm in the crane arm, be set in the crane arm and fixing a plate on the aft end face of the 2 joint arms adjacent with crane arm, have the connection slotted hole on this connecting panel, the slotted hole that is connected that adjacent with crane arm 2 joint arms are retracted on this joint arm connecting panel is connected with crane arm by inserting the connecting pin of extracting with connecting bore correspondence position on the crane arm root two side arms.

The slip cap opposite side relative with the fixing and locking eccentric shaft has the hole near on the madial wall of last inferior horn, and screw mandrel is housed in the hole, and plate is adjusted in an end fixed interval (FI) that is positioned at slip cap madial wall screw mandrel, and the other end that is positioned at slip cap lateral wall screw mandrel is equipped with jam nut.

The utility model is owing to be equipped with scroll wheel on the horizontal supporting axle of crane arm rest stand, be hinged with slip cap on the turntable, crane arm is set in the slip cap and the scroll wheel sliding block joint on the crane arm rest stand, the slip cap two side is provided with the location slotted hole, crane arm root two side is provided with knock hole, captive joint with slip cap by inserting locating dowel pin in the slotted hole position, location that crane arm slides into the corresponding slip cap of knock hole of crane arm, thereby the length of hoisting crane when having reduced inoperative greatly, the whole center of gravity of hoisting crane is concentrated, improved hoisting crane stability and safety in transit, many hidden dangers that the drag type hoisting crane exists have been eliminated in the traction transportation, reduce the hoisting crane storehouse and deposited cost, the utility model compactness rational in infrastructure, cost is low, have better practicality, be fit to apply.

Description of drawings

Fig. 1 is the utility model three-dimensional appearance structural representation;

Fig. 2 is the lateral plan of slip cap;

Fig. 3 is the three-dimensional view of adjust the clearance plate.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is done with detailed description:

As shown in Figure 1, the utility model comprises turntable 1, luffing mechanism, telescoping mechanism 2, crane arm 10, crane arm rest stand 6, be set with the scroll wheel 7 that can on bolster, rotate on the horizontal supporting axle of crane arm 10 rest stands 6, be hinged with box-shaped slip cap 11 at turntable 1 middle part, crane arm 10 be set in the slip cap 11 and with crane arm rest stand 6 on scroll wheel 7 sliding block joints.On slip cap 11 two sides, have location slotted hole 12, correspondingly with location slotted hole 12 on slip cap 11 two sides on crane arm root two side, have knock hole 13, crane arm 10 slides backwards on the knock hole 13 of crane arm and inserts locating dowel pin when corresponding with the position of the location slotted hole 12 of slip cap 11, and crane arm 10 can link together with slip cap 11.

On slip cap 11, be fixed with the crane arm latching device, the crane arm latching device comprises the locking eccentric shaft 3 that is arranged on the slip cap 11 1 side madial walls, locking eccentric shaft 3 one ends that stretch out slip cap 11 bottoms or top are equipped with handle 4, corresponding locking eccentric shaft 3 handles 4 are provided with Fixed latches 5 on slip cap 11 lateral walls, locking eccentric shaft 3 can be provided with one, or respectively be provided with one at slip cap 11 madial wall two ends, place slip cap 11 lateral wall both ends with locking eccentric shaft 3 handles 4 corresponding 2 Fixed latches 5.

Crane arm 10 of the present utility model is rectangular on cross-sectional plane, and corresponding slip cap 11 is box-shaped.If crane arm 10 is other shapes, as crane arm 10 ovalize on cross-sectional plane, slip cap 11 respective cross-section are ovalize also, and the crane arm latching device handles accordingly with oval boom configuration and both can.

Be fixed with L shaped pulley yoke 19 on the crane arm aft end face, stretch out and be fixed with perpendicular sheave shaft 18 on the basifacial L shaped pulley yoke 19 in crane arm rear end, on the perpendicular sheave shaft 18 pulley is housed, flexible wirerope 8 sliding block joints of pulley and telescoping mechanism 2, have connecting bore 17 on the crane arm root two side arms, be set with more piece joint arm in the crane arm, be set in the crane arm and fixing a plate on the aft end face of the 2 joint arms 9 adjacent with crane arm, with the connecting bore 17 corresponding connection slotted holes that on connecting panel, have on the crane arm root two side arms, adjacent with crane arm 2 joint arms 9 be retracted to backward on this joint arm connecting panel be connected connecting bore 17 opposite positions on slotted hole and the crane arm root two side arms time insertion connecting pin, adjacent with crane arm 2 save arms 9 and crane arm 10 can link together.

After crane arm latching device work-hours is long, because wearing and tearing can make coupling mechanism force reduce, for making the crane arm latching device keep locking state preferably, slip cap 11 opposite sides relative with fixing and locking eccentric shaft 3 have the hole near on the madial wall of last inferior horn, screw mandrel 15 is housed in the hole, plate 14 is adjusted in an end fixed interval (FI) that is positioned at slip cap 11 madial wall screw mandrels 15, and the other end that is positioned at slip cap 11 lateral wall screw mandrels 15 is equipped with jam nut; After being encased inside copper sheet between adjust the clearance plate 14 and slip cap 11 madial walls, can adjust wearing clearance, the jam nut that is loaded on the screw mandrel 15 is screwed, both can keep crane arm 10 and slip cap 11 to be in good locking state all the time.

Principle of work

Before the hoisting crane work, extract the Fixed latches on the slip cap lateral wall, unclamp locking eccentric shaft handle, the 2 joint arms 9 that crane arm 10 is adjacent with crane arm are linked together by connecting pin, because the basifacial L shaped pulley yoke 19 in crane arm rear end is provided with the flexible wirerope 8 bonded assembly pulleys with telescoping mechanism 2, operation control system makes luffing wirerope 16 elongations of luffing mechanism, operation control system shortens the flexible wirerope 8 of telescoping mechanism 2 simultaneously, flexible wirerope 8 by the pulling of the pulley on crane arm aft end face lower pulley frame crane arm 10 on scroll wheel 7 to front slide, crane arm slides into the knock hole 13 of crane arm forward and inserts locating dowel pin when corresponding with the position of the location slotted hole 12 of slip cap 11, and crane arm 10 and slip cap 11 are linked together; Rotation lock eccentric shaft 3 handles 4 tightly are locked together crane arm 10 and slip cap 11, and the Fixed latches of stirring on slip cap 11 lateral walls 5 can not rotate eccentric shaft handle 4.Extract connecting pin, hoisting crane enters operating condition.

After the hoisting crane lifting finished, operation control system made the withdrawal of more piece joint arm, and operation control system makes 16 elongations of luffing wirerope that crane arm is fallen on the scroll wheel 7 of crane arm rest stand; Insert connecting pin 2 adjacent joint arms 9 of crane arm 10 and crane arm are connected, the joint arm of this moment can not be stretched out; Push the Fixed latches 5 on the slip cap lateral wall aside, unclamp locking eccentric shaft handle 4, operation control system makes luffing wirerope 16 elongations of luffing mechanism, operation control system shortens the flexible wirerope 8 of telescoping mechanism, with crane arm 10 to front slide a little, take out locating dowel pin, operation control system makes flexible wirerope 8 elongations again, and the operation luffing mechanism slides backward the luffing wirerope 16 pulling crane arms 10 of shortening and puts in place; Rotation lock eccentric shaft 3 handles 4 are with crane arm 10 lockings, and the Fixed latches of stirring on slip cap 11 lateral walls 5 can not rotate eccentric shaft handle 4, and hoisting crane enters storehouse and deposits or tow state.

Claims

1, a kind of drag type hoisting crane, comprise turntable (1), luffing mechanism, telescoping mechanism (2), crane arm (10), crane arm rest stand (6), it is characterized in that: scroll wheel (7) is housed on the horizontal supporting axle of crane arm rest stand, turntable (1) is gone up a hinged slip cap (11), described crane arm (10) is set in the slip cap (11) and scroll wheel (7) sliding block joint on the crane arm rest stand, the slip cap two side is provided with location slotted hole (12), crane arm root two side is provided with knock hole (13), and the knock hole (13) that described crane arm (10) slides into crane arm is captiveed joint with slip cap (11) by inserting the locating dowel pin of extracting with location slotted hole (12) correspondence position of slip cap (11).

2, drag type hoisting crane according to claim 1, it is characterized in that: described slip cap (11) is provided with the crane arm latching device, described crane arm latching device comprises the locking eccentric shaft (3) that is arranged on slip cap (11) the one side madial walls, locking eccentric shaft (3) one ends that stretch out slip cap (11) bottom or top are equipped with handle (4), and corresponding locking eccentric shaft handle (4) is provided with Fixed latches (5) on slip cap (11) lateral wall.

3, drag type hoisting crane according to claim 2 is characterized in that: described slip cap (11) and to be set in the cross-sectional plane of the crane arm (10) in the slip cap (11) rectangular.

4, drag type hoisting crane according to claim 2, it is characterized in that: the described locking eccentric shaft (3) that is arranged on slip cap (11) the one side madial walls is two, place slip cap (11) madial wall both ends, place slip cap (11) lateral wall both ends with locking eccentric shaft handle (4) corresponding 2 Fixed latches (5).

5, according to claim 2 or 3 described drag type hoisting cranes, it is characterized in that: be fixed with L shaped pulley yoke (19) on the crane arm aft end face, stretch out and be fixed with perpendicular sheave shaft (18) on the basifacial L shaped pulley yoke in crane arm rear end (19), on the perpendicular sheave shaft (18) pulley is housed, flexible wirerope (8) sliding block joint of this pulley and telescoping mechanism (2), crane arm (10) root two side arms is provided with connecting bore (17), crane arm is set with the joint arm in (10), be set in the crane arm (10) and fixing a plate on the aft end face of the 2 joint arms (9) adjacent with crane arm, have the connection slotted hole on this connecting panel, the slotted hole that is connected that adjacent with crane arm 2 joint arms (9) are retracted on this joint arm connecting panel is connected with crane arm (10) by inserting the connecting pin of extracting with connecting bore (17) correspondence position on the crane arm root two side arms.

6, drag type hoisting crane according to claim 5, it is characterized in that: slip cap (11) opposite side relative with fixing and locking eccentric shaft (3) has the hole near on the madial wall of last inferior horn, screw mandrel (15) is housed in the hole, plate (14) is adjusted in an end fixed interval (FI) that is positioned at slip cap (11) madial wall screw mandrel (15), and the other end that is positioned at slip cap (11) lateral wall screw mandrel (15) is equipped with jam nut.