CN103043542B - Crane and counterweight positioning mechanism thereof - Google Patents

Crane and counterweight positioning mechanism thereof Download PDF

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Publication number
CN103043542B
CN103043542B CN201210543659.2A CN201210543659A CN103043542B CN 103043542 B CN103043542 B CN 103043542B CN 201210543659 A CN201210543659 A CN 201210543659A CN 103043542 B CN103043542 B CN 103043542B
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CN
China
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fixed
hole
mobile
board
counterweight
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CN201210543659.2A
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Chinese (zh)
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CN103043542A (en
Inventor
马善华
龚彭
陈伟刚
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徐州重型机械有限公司
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Priority to CN201210543659.2A priority Critical patent/CN103043542B/en
Publication of CN103043542A publication Critical patent/CN103043542A/en
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Publication of CN103043542B publication Critical patent/CN103043542B/en

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Abstract

The present invention discloses a counterweight positioning mechanism of a crane, comprising two bracket bodies arranged symmetrically at the left side and the right side of an axis of a frame. The bracket body comprises a fixed body and a movable body hinged on the front upper portion of the fixed body. The fixed body is provided with a first supporting surface which is parallel with the upper surface of the crane frame. The movable body has a second supporting surface. The movable body can be rotated to an open state or a retracted state, and is configured to that: when the movable body is in the open state, the second supporting surface is flush with the first supporting surface; and when the movable body is in the retracted state, the movable body is located below the first supporting surface. According to the split type counterweight positioning mechanism provided by the present invention, the movable body can be rotated to the retracted state, so that when the detachable bracket is disassembled, the counterweight positioning mechanism does not need to be disassembled, the workflow is simplified, and the costs are reduced. On the basis, the present invention also provides a crane with the counterweight positioning mechanism.

Description

Hoisting crane and counterweight detent mechanism thereof

Technical field

The present invention relates to construction machinery and equipment, be specifically related to hoisting crane and counterweight detent mechanism thereof.

Background technology

As everyone knows, counter weight device is a pith in hoisting crane.Counter weight device is generally Casting Parts, and for the working load of balance crane complete machine, stability and the lifting performance of its weight to hoisting crane has a great impact.

The counter weight device of little tonnage hoisting crane generally adopts the version of fixed weight, but in, large-scale rough-terrain crane, be subject to the restriction of complete machine motoring condition deadweight, the weight of fixed weight is limited, has therefore just limited stability and the lifting performance of hoisting crane.For this reason, in existing, large-scale rough-terrain crane generally adopted the version of fixed weight and moving counterweight combination, under motoring condition, on hoisting crane, only there is fixed weight, in the time of operation, again moving counterweight and fixed weight are combined into one, can meet the deadweight restriction requirement of rough-terrain crane motoring condition, again further the stability of lift crane and lifting performance.

Specifically introduce the implementation of technique scheme below in conjunction with Fig. 1 and Fig. 2, refer to Fig. 1 and Fig. 2, Fig. 1 is that in existing rough-terrain crane, moving counterweight is placed on the view on counterweight support, Fig. 2 is the scheme of installation of moving counterweight in existing rough-terrain crane, as Fig. 1, shown in Fig. 2, fixed weight 7 is fixed on turntable 5 rear ends of hoisting crane, fixed weight 7 is provided with two counterweight hoist cylinders 6 and two counterweight locked cylinders, the front end of vehicle frame 4 is provided with an integral type counterweight support 2, dismounting as moving counterweight 1 is supported, counterweight support 2 and counterweight hoist cylinder 6 are on the same circular arc taking center of gyration as the center of circle, and be bolted.When combined moving counterweight and fixed weight, first moving counterweight 1 is placed on counterweight support 2, then turntable 5 is rotated to 180 degree, make counterweight hoist cylinder 6 be positioned at moving counterweight 1 directly over, utilize counterweight hoist cylinder 6 to mention moving counterweight 1, turntable 5 again turnback is got back to initial position, and counterweight locked cylinder stretches out moving counterweight 1 and fixed weight 7 are combined into one.

Nowadays, increasing in, large-scale rough-terrain crane adopted this new construction of split type vehicle frame, refers to Fig. 3, vehicle frame is made up of main body of vehicle frame 41 and the detachable front leg strut 42 and the detachable rear support leg 43 that are separately positioned on main body of vehicle frame 41 front and back ends.The advantage of split type vehicle frame is to reduce length and the deadweight of car load, convenient transport, and under specific operation, dismountable front leg strut 42 and rear support leg 43, effectively to improve complete machine digging angle and departure angle, improve the cross country power of complete machine; Meanwhile, because of the reduction of complete machine deadweight, can also reach certain energy-saving effect.Refer to Fig. 4, for the rough-terrain crane that has adopted split type vehicle frame, counterweight support 2 be fixed on the front end of main body of vehicle frame 41 and the front end of counterweight support 2 be positioned at front leg strut 42 directly over, like this, in the time of dismounting front leg strut 42, must first remove integral type counterweight support 2.

As can be seen here, there are following obvious shortcomings in existing integral type counterweight support:

(1), while dismantling front leg strut 42 for convenience of transport, need to first remove counterweight support 2, and after front leg strut 42 has been dismantled, also need to ressemble counterweight support 2.This process relates to dismounting, assembling and the lifting operation of twice, takes time and effort, and runs counter to the convenience of detachable supporting leg.

(2), when combined moving counterweight 1, because being difficult to ensure that two counterweights of card are installed through hole centers and counterweight hoist cylinder center is in together on the circular arc taking center of gyration as the center of circle, therefore need repeatedly adjust the position of moving counterweight 1, efficiency is low;

(3) counterweight support 2 is conducted oneself with dignity large and purposes is single, forms waste to a certain degree, and manual assembly entirely;

(4) counterweight support 2 need assemble with large welded structures part rigidity, and accuracy requirement is high, and manufacture difficulty is large;

(5) refer to Fig. 5, counterweight support 2 is positioned at vehicle frame dead ahead, and larger height and the width impact driving visual field (affected zone of the A portion region representation of shade line representative to driver's seat in Fig. 5), has certain potential safety hazard.

In view of this, be urgently optimized design for the counterweight support of existing hoisting crane, to simplify the handling of moving counterweight, reduce weight support frame and improve the driving visual field.

Summary of the invention

For above-mentioned defect, the technical matters that the present invention solves is, a kind of counterweight detent mechanism of hoisting crane is provided, and to simplify workflow, expendable weight, reduces costs, and can effectively improve the driving visual field.

The counterweight detent mechanism of hoisting crane provided by the invention, comprise left and right symmetrically arranged two stake bodies in axis along crane frame, described stake body comprises fixed body and the mobile that is hinged on described fixed body front end, and described fixed body has the first bearing surface paralleling with the upper surface of described crane frame; Described mobile has the second bearing surface, the upper rear end of described mobile is hinged on the front end face top of described fixed body by the first bearing pin, described mobile can rotate around described the first bearing pin, and be fixed on and on described fixed body, form open mode or collapsed state by the second bearing pin respectively, and be configured to: described mobile is in the time of open mode position, and described the second bearing surface is concordant with described the first bearing surface; Described mobile rotates and in the time of collapsed state position, described mobile be positioned at described the first bearing surface under.

Preferably, described mobile comprises mobile's top board, left side board and right side board, and the end face of described mobile top board forms described the second bearing surface; Described left side board and right side board are arranged in parallel, described mobile top board is fixed on the end face of described left side board and described right side board, on described left side board and right side board, be respectively equipped with first pin-and-hole suitable with described the first bearing pin and with suitable the second pin-and-hole of described the second bearing pin.

Preferably, described fixed body comprises fixed body top board, base plate, A-pillar and rear column, and described base plate is used for being fixed on crane frame; Described A-pillar and rear column are arranged in parallel, and described A-pillar and described rear column are separately fixed on described base plate, the bottom of described A-pillar is provided with the 3rd pin-and-hole for mating described the second bearing pin, and the top of described rear column is provided with the 4th pin-and-hole for mating described the second bearing pin; Described fixed body top board is fixed on the end face of described A-pillar and described rear column, and the end face of described fixed body top board forms described the first bearing surface; Between described left side board and described right side board, can hold described A-pillar and described rear column.

Preferably, the end face of described fixed body is provided with locating piece, and it is suitable that the counterweight on described locating piece and clump weight is installed through hole.

Preferably, described locating piece has columniform base and is arranged on the positioning boss on described base top surface, the outer circumference surface of described base and described positioning boss respectively with clump weight on counterweight install through hole suitable, the tangent plane concordant with the side of described the first bearing surface forms the first tangent plane along the described base of axial cutting of described base, the top of described the first tangent plane is the right angle platform terrace being formed by horizontal surface and vertical surface, and the first tangent plane on two described locating pieces is oppositely arranged.

Preferably, described fixed body is installed through hole by multiple first and is fixed on crane frame, described locating piece is installed through hole by multiple second and is fixed on described fixed body, and described the first installation through hole and described second is installed through hole and is bar shaped slotted hole, and length direction is mutually vertical.

Preferably, described first installs the left and right directions setting of through hole along crane frame, and described second installs the fore-and-aft direction setting of through hole along crane frame.

Preferably, be positioned at the bottom of described A-pillar for locking the 3rd pin-and-hole of described mobile open mode, be positioned at the top of described rear column for locking the 4th pin-and-hole of described mobile collapsed state.

The present invention also provides a kind of hoisting crane, comprises vehicle frame, and the front end of the top surface of described vehicle frame is provided with the counterweight detent mechanism of said structure.

Preferably, described hoisting crane is rough-terrain crane.

The counterweight detent mechanism of hoisting crane provided by the invention, be designed to split-type structural, comprise left and right symmetrically arranged two stake bodies in axis along crane frame, and each stake body is made up of with the mobile that is hinged on fixed body upper front end fixed body, mobile is rotatable and be fixed as open mode or collapsed state, thereby while making dismounting detachable bracket, need not dismounting counterweight detent mechanism, simplify workflow, and alleviated weight, reduced cost.In addition, so setting can make integral width significantly reduce, and has reduced the impact of counterweight detent mechanism on the driving visual field, improves the driving visual field.

In preferred version of the present invention, the end face of fixed body is provided with locating piece, and it is suitable that the counterweight on locating piece and clump weight is installed through hole, further can effectively carry out the location of moving counterweight.

In another preferred version of the present invention, locating piece has columniform base and is arranged on the positioning boss on base top surface, the tangent plane concordant with the side of the first bearing surface forms the first tangent plane along the axial cutting base of base, and the first tangent plane on two locating pieces is oppositely arranged.This design, makes the width of fixed body top board be less than the diameter of base, has alleviated to greatest extent the weight of stake body.

Brief description of the drawings

Fig. 1 is that in existing rough-terrain crane, moving counterweight is placed on the view on counterweight support;

Fig. 2 is the scheme of installation of moving counterweight in existing rough-terrain crane;

Fig. 3 is the decomposition texture schematic diagram that existing rough-terrain crane has suffered split type vehicle frame;

Fig. 4 is the installation site schematic diagram of counterweight support in the rough-terrain crane of existing split type vehicle frame;

Fig. 5 is the field range schematic diagram of chaufeur in existing rough-terrain crane;

Fig. 6 is the structural representation of the counterweight detent mechanism described in detailed description of the invention;

Fig. 7 is the stake body perspective view described in detailed description of the invention;

Fig. 8 is the open mode schematic diagram of the stake body shown in Fig. 7;

Fig. 9 is the collapsed state schematic diagram of the stake body shown in Fig. 7;

Figure 10 is the structural representation of locating piece in the stake body described in detailed description of the invention;

In Figure 11, the direction of arrow shows the adjustable direction of device;

Figure 12 is the field range schematic diagram of chaufeur in scheme described in detailed description of the invention.

Detailed description of the invention

Core of the present invention is to provide a kind of counterweight detent mechanism of hoisting crane, comprise two left sides, axis along crane frame, right symmetrically arranged stake body, each stake body is made up of with the mobile that is hinged on fixed body front end fixed body, mobile can rotate and be fixed on open mode or collapsed state around jointed shaft, under open mode, the upper surface of mobile and the upper surface of fixed body are concordant with movable support counterweight, under collapsed state, mobile is hidden in the below, upper surface of fixed body, can not affect the dismounting of front leg strut, thereby simplify the workflow of hoisting crane front leg strut dismounting, and reduce productive costs.

The counterweight detent mechanism this detailed description of the invention being provided below in conjunction with Figure of description is described in further detail, so that those skilled in the art understand better.In the following description, adopted identical label with parts identical in Fig. 1 to Fig. 5.

Refer to Fig. 6, Fig. 7, Fig. 8 and Fig. 9, Fig. 6 is the structural representation of the counterweight detent mechanism described in present embodiment, Fig. 7 is the decomposition texture schematic diagram of the stake body described in present embodiment, Fig. 8 is the stake body open mode schematic diagram described in present embodiment, and Fig. 9 is the stake body collapsed state schematic diagram described in present embodiment.

As shown in Figure 6, the counterweight detent mechanism of this hoisting crane, comprises that 20, two stake bodies 20 of two stake bodies are respectively along left and right being symmetrical arranged in axis of crane frame 4.

As shown in Figure 7, Figure 8 and Figure 9, stake body is made up of fixed body 21 and mobile 22, fixed body 21 has the first bearing surface 211 paralleling with the vehicle frame upper surface of hoisting crane, mobile 22 has the second bearing surface 221, and the upper rear end of mobile 22 is hinged on the front end face top of fixed body 21 by the first bearing pin 23.Mobile 22 can rotate and is fixed on described fixed body 21 and be formed open mode or collapsed state by the second bearing pin 24 respectively around the first bearing pin 23, and be configured to: when mobile 22 is during in open mode position, the second bearing surface 221 is concordant with the first bearing surface 211, for carrying moving counterweight (referring to Fig. 8); When mobile 22 rotates and during in collapsed state position around the first bearing pin 23, below and the second bearing surface 221 that mobile 22 is positioned at the first bearing surface 211 are vertical with the first bearing surface 211, under this state, mobile 22 is hidden in the below of the first bearing surface 211, the very large segment distance of having retracted backward foremost of mobile 22, therefore, can not affect the handling (referring to Fig. 9) of front leg strut.

Wherein, mobile 22 specifically comprises mobile's top board and left and right side plate 222, the end face of mobile's top board forms the second bearing surface 221, left and right side plate 222 is arranged in parallel, mobile's top board is fixed on the end face of left and right side plate 222, on left side board and right side board, be respectively equipped with first pin-and-hole suitable with the first bearing pin 23 and with suitable the second pin-and-hole of the second bearing pin 24.

Wherein, fixed body 21 specifically comprises fixed body top board, base plate 212, A-pillar 213 and rear column 214, base plate 212 is provided with for being fixed on multiple first on crane frame through hole 215 is installed, A-pillar 213 and rear column 214 front and back are arranged in parallel, and A-pillar 213 and rear column 214 are separately fixed on base plate 212, the bottom of A-pillar 213 is provided with the 3rd pin-and-hole 216 for mating the second bearing pin 24, the top of rear column 214 is provided with the 4th pin-and-hole 217 for mating the second bearing pin 24, fixed body top board is fixed on the end face of A-pillar 213 and rear column 214, the end face of fixed body top board forms the first bearing surface 211.Wherein, spacing in mobile 22 between left and right side plate 222 is greater than the width of A-pillar 213 and rear column 214, thereby pack up in process in mobile 22, A-pillar 213 can be inserted between left and right side plate 222, finally make the left and right side plate 222 of mobile 22 coincide together with A-pillar 213, A-pillar 213 is hidden between left and right side plate 222.

When mobile is during in open mode, the 3rd pin-and-hole 216 that the second bearing pin 24 is run through on the second pin-and-hole and the A-pillar on left and right side plate 222 is fixed; In the time that needs are packed up travel(l)ing rest, first extract the second bearing pin 24 out, make mobile 22 rotate 90 degree around the first bearing pin 23, then the 4th pin-and-hole 217 that the second bearing pin 24 is run through on the second pin-and-hole and the rear column on left and right side plate 222 is fixed.

The end face of mobile's top board is provided with locating piece 25, refers to Figure 10, and Figure 10 is the structural representation of locating piece in the stake body described in present embodiment.

As shown in figure 10, it is suitable that the counterweight on top and the clump weight of locating piece 25 is installed through hole, and locating piece 25 is provided with multiple second through hole 251 is installed, and multiple bolts are installed through hole 251 through second respectively locating piece 25 is fixed on the end face of mobile's top board.

Specifically, locating piece 25 has columniform base 252 and is arranged on the positioning boss 253 on base 252 end faces, the outer circumference surface of base 252 and positioning boss 253 respectively with clump weight on counterweight install through hole suitable, and the top of base 252 and positioning boss 253 all has large chamfering, be convenient to installation, the location of moving counterweight.

Counterweight detent mechanism provided by the invention, former one-piece construction is improved to split-type structural, the weight of moving counterweight is carried by two stake bodies, the first bearing surface 211 and the second bearing surface 221 are the bar shaped arranging along car body fore-and-aft direction, if the width of the first bearing surface 211 is identical with the diameter of the base 252 of locating piece 25, the width of fixed body top board, base plate, A-pillar and rear column all can have larger width in order to adapt to the diameter of base 252, will increase like this weight of stake body.For this reason, the present invention improves the structure of locating piece 25, the width of fixed body top board is less than the diameter of base 252, the tangent plane concordant with the side of fixed body top board forms the first tangent plane 254 along the axial cutting base 252 of base 252, the top of the first tangent plane is right angle platform terrace, right angle platform terrace is formed by horizontal surface 255 and vertical surface 256, horizontal surface 255 is vertical with the first tangent plane 254, vertical surface 256 and vertical surface parallel with the first tangent plane 254 is positioned at the outside of the first tangent plane 254, and the first tangent plane on two locating pieces 25 is oppositely arranged.This design, can guarantee that the counterweight on diameter clump weight that locating piece 25 is larger is installed through hole coupling, has alleviated to greatest extent the weight of stake body simultaneously.

It is slotted hole that on fixed body 21 first installed through hole 215, along the left and right direction setting of crane frame, it is also slotted hole that on locating piece 25 second installed through hole 251, along the front and rear direction setting of crane frame, can adjust the spacing of left and right direction between two locating pieces 25 by the first installation through hole 215, can adjust the spacing of two locating piece 25 front and rear directions by the second installation through hole 251, mate thereby make locating piece 25 with the counterweight on clump weight, through hole is installed well.

Except aforementioned counterweight detent mechanism, present embodiment also provides a kind of rough-terrain crane.Same as the prior art, this hoisting crane comprises vehicle frame, and the front end of the top surface of this vehicle frame is provided with foregoing counterweight detent mechanism.Other building blocks of functions that should be appreciated that this rough-terrain crane can adopt existing techniques in realizing, therefore repeat no more herein.

Certainly, described in this programme, counterweight detent mechanism is also applicable to the hoisting crane of other types.

To sum up, technical scheme provided by the invention, has multiple degree of freedom regulatory function, convenient and swiftly ensures lightweight simultaneously, reduces manufacture difficulty, optimizes the visual field of travelling, and concrete advantage is as follows:

(1) replace one-piece construction with split-type structural, significantly reduced material requested amount, alleviated the overall weight of counterweight detent mechanism, reduced productive costs.

(2) can be formed and be opened and pack up two states by rotation mobile, carrying surface capable of regulating, makes detachable supporting leg disassembly process not need to remove counterweight detent mechanism, has reduced operational ton and operation easier.

(3) two locating pieces can be distinguished front, rear, left and right adjustment, have to a certain degree reduced the requirement to vehicle frame accuracy of manufacture.As shown in figure 11, in Figure 11, the direction of arrow is adjustable direction.While assembling for the first time, locating piece is not locked, to adapt to the manufacturing errors of vehicle frame and moving counterweight.After assembling, according to final position locking positioning piece.When assembling next time or dismounting moving counterweight, can ensure the optimum position of locating piece, significantly improve the efficiency of assembling of moving counterweight.

(4) integral width significantly reduces, and has reduced the impact of counterweight detent mechanism on the driving visual field, improves the driving visual field, as shown in figure 12, and the affected zone of the B portion region representation of shade line representative to driver's seat in Figure 12.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (10)

1. the counterweight detent mechanism of hoisting crane, is characterized in that, comprises left and right symmetrically arranged two stake bodies in axis along crane frame, and described stake body comprises:
Fixed body, has the first bearing surface paralleling with the upper surface of described crane frame;
Mobile, there is the second bearing surface, the upper rear end of described mobile is hinged on the front end face top of described fixed body by the first bearing pin, described mobile can rotate around described the first bearing pin, and be fixed on and on described fixed body, form open mode or collapsed state by the second bearing pin respectively, and be configured to:
Described mobile is in the time of open mode position, and described the second bearing surface is concordant with described the first bearing surface; Described mobile rotates and in the time of collapsed state position, described mobile be positioned at described the first bearing surface under.
2. the counterweight detent mechanism of hoisting crane according to claim 1, is characterized in that, described mobile comprises:
Mobile's top board, its end face forms described the second bearing surface;
Left side board and right side board, be arranged in parallel, described mobile top board is fixed on the end face of described left side board and described right side board, on described left side board and right side board, be respectively equipped with first pin-and-hole suitable with described the first bearing pin and with suitable the second pin-and-hole of described the second bearing pin.
3. the counterweight detent mechanism of hoisting crane according to claim 2, is characterized in that, described fixed body comprises:
Base plate, for being fixed on crane frame;
A-pillar and rear column, be arranged in parallel, and described A-pillar and described rear column are separately fixed on described base plate, the bottom of described A-pillar is provided with the 3rd pin-and-hole for mating described the second bearing pin, and the top of described rear column is provided with the 4th pin-and-hole for mating described the second bearing pin;
Fixed body top board, is fixed on the end face of described A-pillar and described rear column, and the end face of described fixed body top board forms described the first bearing surface;
Between described left side board and described right side board, can hold described A-pillar and described rear column.
4. the counterweight detent mechanism of hoisting crane according to claim 1, is characterized in that, the end face of described fixed body is provided with locating piece, and it is suitable that the counterweight on described locating piece and clump weight is installed through hole.
5. the counterweight detent mechanism of hoisting crane according to claim 4, it is characterized in that, described locating piece has columniform base and is arranged on the positioning boss on described base top surface, the outer circumference surface of described base and described positioning boss respectively with clump weight on counterweight install through hole suitable, the tangent plane concordant with the side of described the first bearing surface forms the first tangent plane along the described base of axial cutting of described base, the top of described the first tangent plane is the right angle platform terrace being formed by horizontal surface and vertical surface, and the first tangent plane on two described locating pieces is oppositely arranged.
6. the counterweight detent mechanism of hoisting crane according to claim 5, it is characterized in that, described fixed body is installed through hole by multiple first and is fixed on crane frame, described locating piece is installed through hole by multiple second and is fixed on described fixed body, described the first installation through hole and described second is installed through hole and is bar shaped slotted hole, and length direction is mutually vertical.
7. the counterweight detent mechanism of hoisting crane according to claim 6, is characterized in that, described first installs the left and right directions setting of through hole along crane frame, and described second installs the fore-and-aft direction setting of through hole along crane frame.
8. the counterweight detent mechanism of hoisting crane according to claim 3, it is characterized in that, be positioned at the bottom of described A-pillar for locking the 3rd pin-and-hole of described mobile open mode, be positioned at the top of described rear column for locking the 4th pin-and-hole of described mobile collapsed state.
9. hoisting crane, comprises vehicle frame, it is characterized in that, the front end of the top surface of described vehicle frame is provided with the counterweight detent mechanism as described in claim 1 to 8 any one.
10. hoisting crane according to claim 9, is characterized in that, described hoisting crane is rough-terrain crane.
CN201210543659.2A 2012-12-14 2012-12-14 Crane and counterweight positioning mechanism thereof CN103043542B (en)

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CN103043542B true CN103043542B (en) 2014-11-19

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JP2009107774A (en) * 2007-10-30 2009-05-21 Tadano Ltd Mobile crane
JP5625377B2 (en) * 2010-02-09 2014-11-19 コベルコクレーン株式会社 Mobile crane
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JP3790448B2 (en) * 2001-07-10 2006-06-28 新キャタピラー三菱株式会社 Counterweight in construction machinery
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