CN102303822A - Balance weight loading and unloading mechanism for crane as well as crane and loading and unloading method for balance weight - Google Patents
Balance weight loading and unloading mechanism for crane as well as crane and loading and unloading method for balance weight Download PDFInfo
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- CN102303822A CN102303822A CN201110156317A CN201110156317A CN102303822A CN 102303822 A CN102303822 A CN 102303822A CN 201110156317 A CN201110156317 A CN 201110156317A CN 201110156317 A CN201110156317 A CN 201110156317A CN 102303822 A CN102303822 A CN 102303822A
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- counterweight
- hoisting crane
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- handing device
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Abstract
The invention provides a balance weight loading and unloading mechanism for a crane as well as a crane and a loading and unloading method for a balance weight. The balance weight loading and unloading mechanism for the crane comprises a rotary table (10), a balance weight (30) and a frame; the mechanism further comprises a lifting mechanism which is arranged on the rotary table (10) along the vertical direction; a locking cylinder (15) which is arranged on the rotary table (10) along the horizontal direction and is provided with a locking pin; a horizontal connecting plate which is arranged on the balance weight (30) along the horizontal direction and is matched with the lifting mechanism to enable the balance weight (30) to move along the vertical direction; and a vertical connecting plate which is arranged on the balance weight (30) along the vertical direction; the vertical connecting plate is provided with connection holes; and the locking pin is matched with the connecting hole to enable the balance weight (30) to lock or unlock along the horizontal direction. According to the invention, the problem that the balance weight sway in the process of loading and unloading in the prior art is solved; and the process of loading and unloading the balance weight is safer and more stable.
Description
Technical field
The present invention relates to the hoisting crane field, in particular to the handling method of a kind of hoisting crane with counterweight handing device, hoisting crane and counterweight.
Background technology
Counterweight is one of important composition parts of hoisting crane, has the balance axle load, improves whole vehicle stability, strengthens effects such as lifting characteristic.Increase along with the tonnage of hoisting crane; The weight of corresponding counterweight has also increased a lot; And along with increasing of its operating mode; Cooresponding counterweight is also different under different operating modes; Because there is qualification on the chassis of hoisting crane to allowable load; Counterweight has to make moving counterweight, is not with counterweight when promptly driving a vehicle, and presses required installation during work.Like this, realize the loading and unloading certainly of counterweight, promptly do not need other elevator machineries or lifting device to assist, hoisting crane self can load and unload counterweight, in practical operation for the important that all seems that saves time and cost.
Present hoisting crane both domestic and external is more with counterweight handing device kind, but structure is all comparatively complicated, and less stable.Show structural representation and the birds-eye view of the hoisting crane of prior art like Fig. 1 and Fig. 2 with the counterweight handing device; As can be seen from the figure; This counterweight handing device comprises: turntable 10 '; Counterweight 30 '; Be arranged on oscillating oil cylinder 2 ' and rocking arm 3 ' between turntable 10 ' and the counterweight 30 '; When oscillating oil cylinder 2 ' stretches; Promote rocking arm 3 ' swing; Thereby make counterweight 30 ' around the O spot wobble; When being placed into counterweight 30 ' on the vehicle frame; Stirring rotational pin 4 ' breaks off relations counterweight 30 '; The dismounting of counterweight 30 ' is accomplished in the bullet bolt 7 ' withdrawal of cross cylinder 6 ' then.
But because counterweight 30 ' is to be connected through rotational pin 4 ' with rocking arm 3 ', in the Assembly &Disassembly process, counterweight 30 ' is rocked bigger.
Summary of the invention
The present invention aim to provide a kind of hoisting crane with the counterweight handing device, have its hoisting crane and the handling method of counterweight, to solve in the prior art in unloading process, counterweight is rocked bigger problem.
To achieve these goals, according to an aspect of the present invention, a kind of hoisting crane counterweight handing device is provided, comprising: turntable, counterweight and vehicle frame also comprise: lift system vertically is arranged on the turntable; The locking cylinder, along continuous straight runs is arranged on the turntable, has stop pin; Horizontal connecting plate, along continuous straight runs are arranged on the counterweight, cooperate so that counterweight can vertically move with lift system with lift system; Vertically connecting panel vertically is arranged on the counterweight, vertically have connecting bore on the connecting panel, and stop pin cooperates with connecting bore so that counterweight locks or release in the horizontal direction.
Further, turntable is provided with block, and counterweight is provided with limiting stopper; Wherein, limiting stopper cooperates with block so that the relative cylinder in the vertical direction location that locks of vertical connecting panel.
Further, the corresponding vertically position of connecting panel also is provided with recess on the turntable, and block is arranged on the inwall of indent, and limiting stopper is arranged on the vertical connecting panel, and wherein, limiting stopper and block cooperate so that vertical connecting panel is located in recess.
Further, lift system is a lift cylinder, and lift cylinder has piston rod, and the end of piston rod is provided with fixture block, and horizontal connecting plate is provided with the hole clipping adaptive with fixture block, and hoisting crane also comprises the clamp that is removably disposed between fixture block and the hole clipping with the counterweight handing device.
Further, has breach on the clamp.
Further, corresponding stop pin place also is provided with position transduser on the turntable, whether arrives the desired location to detect stop pin.
Further, lift cylinder is two, comprising: first lift cylinder and second lift cylinder; Stop pin is two also, comprising: first stop pin and second stop pin.
Further, the counterweight lower surface is provided with knock hole, and vehicle frame is provided with the registration mast that cooperates with knock hole, and registration mast is up-small and down-big tapered pin.
According to a further aspect in the invention, a kind of hoisting crane is provided also, has had above-mentioned hoisting crane counterweight handing device.
According to a further aspect in the invention; A kind of handling method of counterweight also is provided, has used above-mentioned hoisting crane to carry out the loading and unloading of counterweight, comprised installation steps and/or demounting procedure with the counterweight handing device; Wherein, installation steps comprise: (1) hoisting crane hangs counterweight on the vehicle frame through its lifting appliance; (2) the turntable revolution is 180 °, and lift cylinder cooperates with horizontal connecting plate, and counterweight is vertically moved up; (3) move to first desired location when counterweight, the stop pin of locking cylinder stretches out, and is inserted in the connecting bore of vertical connecting panel, to accomplish the installation of counterweight; Demounting procedure comprises: the stop pin withdrawal of (1) locking cylinder; (2) lift cylinder cooperates with horizontal connecting plate, and counterweight is vertically moved down; (3) move to second desired location when counterweight, 180 ° of turntable revolutions, hoisting crane hangs other transport vehicles through its lifting appliance with counterweight, to accomplish the dismounting of counterweight.
Use technical scheme of the present invention; Hoisting crane comprises with the counterweight handing device: the lift system and the along continuous straight runs that vertically are arranged on the turntable are arranged on the horizontal connecting plate on the counterweight; Lift system and horizontal connecting plate cooperate; Counterweight can vertically be moved, thereby accomplish the lifting and the decline of counterweight.Hoisting crane also comprises with the counterweight handing device: along continuous straight runs is arranged on the locking cylinder on the turntable and vertically is arranged on the vertical connecting panel on the counterweight; Wherein, The locking cylinder has stop pin; Vertically have connecting bore on the connecting panel, stop pin cooperates with connecting bore so that counterweight locks or release in the horizontal direction.In the process of Assembly &Disassembly; Because lift system cooperates with horizontal connecting plate; Counterweight is in the vertical direction effect of suffering restraints; Simultaneously, because stop pin cooperates with connecting bore, counterweight plays effect of contraction again in the horizontal direction again; Like this; Suffer restraints simultaneously on counterweight in the vertical direction, the horizontal direction, do not rock, thereby make the process of Assembly &Disassembly safer, steady so in the process of Assembly &Disassembly, can not produce.
Description of drawings
The Figure of description that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows in the prior art hoisting crane with the structural representation of counterweight handing device;
Fig. 2 shows among Fig. 1 hoisting crane with the schematic top plan view of counterweight handing device;
Fig. 3 shows the structural representation of hoisting crane according to the present invention with the embodiment of counterweight handing device;
Fig. 4 show hoisting crane among Fig. 3 with the A-A of counterweight handing device to cross-sectional schematic;
Fig. 5 shows among Fig. 3 hoisting crane with the B place partial enlarged drawing of counterweight handing device; And
Fig. 6 shows among Fig. 3 hoisting crane with the C place partial enlarged drawing of counterweight handing device.
The specific embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to the accompanying drawings and combine embodiment to describe the present invention in detail.
Fig. 3 shows the structural representation of hoisting crane according to the present invention with the embodiment of counterweight handing device; Fig. 4 show hoisting crane among Fig. 3 with the A-A of counterweight handing device to cross-sectional schematic; In conjunction with referring to Fig. 3 to Fig. 4, the hoisting crane of present embodiment comprises with the counterweight handing device: turntable 10, counterweight 30 and vehicle frame (not shown).The both sides of turntable 10 vertically are provided with first lift system and second lift system respectively; In the present embodiment; First lift system and second lift system are first lift cylinder 11 and second lift cylinder 13; Certain first lift system and second lift system also are not limited to this; For example can be that chain or steel rope are through the power-lift counterweight, as long as can accomplish lift action.Go back along continuous straight runs on the turntable 10 and be provided with locking cylinder 15, in the present embodiment, locking cylinder 15 is mounted on the turntable 10 through mount pad, and this locking cylinder 15 has two piston rods, and two piston rods form the first stop pin 15a and the second stop pin 15b.On counterweight 30, be provided with horizontal connecting plate 31 and horizontal connecting plate 33 that along continuous straight runs is provided with, and vertical connecting panel 35 that vertically is provided with and vertical connecting panel 37.Need to prove, above-mentioned lift system, stop pin, horizontal connecting plate and vertically connecting panel be not restricted to two, also can be one or more, be that example describes with two in the present embodiment.
In the present embodiment, first lift cylinder 11 and second lift cylinder 13 cooperate with horizontal connecting plate 31 and horizontal connecting plate 33 respectively, in the process of Assembly &Disassembly, accomplish the lifting and the decline of counterweight 30.In a kind of preferred embodiment, like Fig. 3 and shown in Figure 5, the piston rod of first lift cylinder 11 is provided with downwards, and the end of the piston rod of first lift cylinder 11 is provided with fixture block 111; Horizontal connecting plate 31 is provided with the hole clipping 311 adaptive with fixture block 111, and present embodiment also comprises simultaneously: be removably disposed in the clamp 313 between fixture block 111 and the hole clipping 311.Specifically; When the piston rod of first lift cylinder 11 stretches out; Fixture block 111 is inserted in the hole clipping 311; Clamp 313 is inserted between fixture block 111 and the hole clipping 311 then; Clamp 313 has breach; Be preferably U-shaped plate or C shape plate etc., make interlock between piston rod and the counterweight 30 of first lift cylinder 11, thereby make counterweight 30 descend or rise along with the stretching out or shrinking of piston rod of first lift cylinder 11 lifting and the decline of completion counterweight 30.Corresponding, the piston rod of second lift cylinder 13 also is provided with downwards, and the end of the piston rod of second lift cylinder 13 also is provided with fixture block; Horizontal connecting plate 33 is provided with the hole clipping that cooperates with fixture block, realizes interlock through the detachable clamp that is provided with between the piston rod of second lift cylinder 13 and the counterweight 30, and principle of work is identical with first lift cylinder 11, repeats no more at this.As can be seen from Figure 5, lift cylinder cooperates with horizontal connecting plate 31 and horizontal connecting plate 33, makes counterweight 30 in the vertical direction effect of suffering restraints.
In the present embodiment; In conjunction with referring to Fig. 4 and Fig. 6; As can be seen from the figure; Vertically be respectively equipped with first connecting bore and second connecting bore on connecting panel 35 and the vertical connecting panel 37; The first stop pin 15a and the second stop pin 15b cooperate with first connecting bore and second connecting bore, accomplish counterweight 30 the locking and unlocking in the horizontal direction.Be inserted in first connecting bore through the first stop pin 15a, the second stop pin 15b is inserted into and accomplishes lock out action in second connecting bore; Through first stop pin 15a withdrawal, the release action is accomplished in second stop pin 15b withdrawal.As can be seen from Figure 6, stop pin cooperates with connecting bore, makes counterweight 30 play effect of contraction in the horizontal direction.
In another kind of preferred embodiment, as shown in Figure 4, also be provided with block on the turntable 10 of the hoisting crane of present embodiment with the counterweight handing device, counterweight 30 is provided with limiting stopper; Wherein, limiting stopper cooperates with block so that vertically connecting panel 35, vertical connecting panel 37 relative locking cylinder 15 in the vertical directions are located.In the present embodiment, as shown in Figure 4, limiting stopper can be arranged on the sidewall of vertical connecting panel 35 or vertically on the sidewall of connecting panel 37, is provided with perhaps that two limiting stoppers place the sidewall of vertical connecting panel 35 respectively or vertically on the sidewall of connecting panel 37; The position of the corresponding limiting stopper of block is arranged on the turntable 10.Perhaps limiting stopper can be arranged on horizontal connecting plate 31 or the horizontal connecting plate 33.Certainly, the position of limiting stopper and block is not limited thereto, if they can cooperatively interact make vertical connecting panel 35, vertically connecting panel 37 locking cylinder 15 in the vertical direction positioning instants can relatively.
In the above-described embodiments; Preferably; The position of corresponding vertically connecting panel 35 and vertical connecting panel 37 also is provided with first recess 17 and second recess 19 on the turntable 10; First recess 17 and second recess 19 surround by two risers that are oppositely arranged, and first recess 17 and second recess 19 cooperate with vertical connecting panel 35 and vertical connecting panel 37 respectively.As shown in Figure 6, second recess 19 can play the position-limiting action to vertical connecting panel 37, and then the horizontal direction of counterweight 30 is had constraint, prevents that counterweight 30 from the time rocking in work in the horizontal direction.Two limiting stoppers are separately positioned on vertical connecting panel 35 and the vertical connecting panel 37; The inwall that forms first recess, 17 places is provided with and the cooresponding block of limiting stopper, forms on the inwall at second recess, 19 places also to be provided with and the cooresponding block of limiting stopper.Specifically, as shown in Figure 6, form on the left and right inwall at second recess, 19 places and respectively be provided with a block 191, vertically respectively be provided with a limiting stopper 371 on the left and right outer wall of connecting panel 37.Vertical connecting panel 37 is upward movement in the process that counterweight 30 is installed; Vertically thereby the limiting stopper 371 of connecting panel 37 contacts the effect of locating on the vertical direction of playing with block 191; At this moment the first stop pin 15a and the second stop pin 15b that lock cylinder 15 stretch out, in the connecting bore of connecting bore that is inserted into vertical connecting panel 35 respectively and vertical connecting panel 37 to realize the locking of counterweight 30 horizontal directions.
Preferably, the corresponding first stop pin 15a and the second stop pin 15b place are provided with position transduser respectively on the turntable 10.As shown in Figure 6, in the present embodiment, position transduser 193 is arranged on the right side wall at second recess, 19 places, and position transduser 193 is used to detect the second stop pin 15b and whether reaches predetermined latched position.Whether the first stop pin 15a and the second stop pin 15b that utilize position transduser can detect locking cylinder 15 have arrived the desired location, with counterweight 30 locking, thereby have guaranteed the safety of follow-up hoisting crane work.
Preferably; Counterweight 30 lower surfaces are provided with the locating hole (not shown); Locating hole can be one or more; Vehicle frame is provided with the reference column (not shown) that cooperates with this locating hole; Be convenient to when mounted counterweight 30 is placed on the precalculated position fast; Thereby save the set-up time; Simultaneously preferably; This reference column is up-small and down-big cone pin; Cone pin has the automatic centering function and more saves time; Specifically; When cooperating with locating hole, the position of counterweight 30 and the position of reference column need be aimed in vertical direction fully reference column; For cone pin, then need not aim at fully, as long as make both relative positions in certain scope, the automatic landing of meeting was to the precalculated position when counterweight 30 descended.
The present invention also provides a kind of hoisting crane; Has above-mentioned hoisting crane counterweight handing device; This hoisting crane can be accomplished the loading and unloading certainly of counterweight; Because counterweight receives simultaneously on level and the vertical direction and retraining in the Assembly &Disassembly process; So counterweight is not rocked in the installation or removal process, make that the process of Assembly &Disassembly is safer, steady.
Counterweight handling method of the present invention is following:
In installation process, accomplish fluently supporting leg when hoisting crane is in place, after turntable 10 can turn round, just can carry out the installation of counterweight 30.Crane is by self boom hoisting; By specifying the brachium and the elevation angle; Required counterweight is hung on the vehicle frame; Make the locating hole of counterweight 30 belows aim at the cone pin on the vehicle frame; Turntable 10 revolutions are 180 ° then; Make the turntable that is provided with the counterweight charging crane forward counterweight 30 tops to; At this moment; The piston rod of the piston rod of first lift cylinder 11 and second lift cylinder 13 stretches out; The fixture block of piston rod of fixture block and second lift cylinder 13 of the piston rod of first lift cylinder 11 is inserted into respectively in the hole clipping of two horizontal connecting plates; Then two clamps are inserted into respectively between two pairs of fixture blocks and the hole clipping, as shown in Figure 5.Then; Control the piston rod of first lift cylinder 11 and the piston rod withdrawal of second lift cylinder 13; Until the limiting stopper on two vertical connecting panels respectively with the madial wall that forms first, second indent on block contact, this moment first lift cylinder 11 the piston rod of piston rod and second lift cylinder 13 minimum stroke of withdrawing.At last, the first stop pin 15a and the second stop pin 15b of control locking cylinder 15 stretch out, and detect the first stop pin 15a and the second stop pin 15b reaches predetermined latched position until position transduser, accomplish from installing.
In unloading process; Be exactly an inverse process of installation process in fact; Specifically; First stop pin 15a of control locking cylinder 15 and second stop pin 15b withdrawal are controlled the piston rod of first lift cylinder 11 and the piston rod of second lift cylinder 13 then and are stretched out, and make the knock hole of counterweight 30 aim at the tapered pin on the vehicle frame; Turntable 10 revolutions are 180 ° then; By specifying the brachium and the elevation angle, counterweight 30 is hung other transport vehicles through self lifting appliance, accomplish from dismounting.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. hoisting crane counterweight handing device comprises: turntable (10), counterweight (30) and vehicle frame, it is characterized in that, and also comprise:
Lift system vertically is arranged on the said turntable (10);
Locking cylinder (15), along continuous straight runs is arranged on the said turntable (10), has stop pin (15a, 15b);
Horizontal connecting plate (31,33), along continuous straight runs are arranged on the said counterweight (30), cooperate so that said counterweight (30) can vertically move with lift system with said lift system;
Vertical connecting panel (35,37); Vertically be arranged on the said counterweight (30); Said vertical connecting panel has connecting bore on (35,37), and said stop pin (15a, 15b) cooperates with said connecting bore so that said counterweight (30) locks or release in the horizontal direction.
2. hoisting crane counterweight handing device according to claim 1 is characterized in that said turntable (10) is provided with block, and said counterweight (30) is provided with limiting stopper; Wherein, said limiting stopper cooperates with said block so that said vertical connecting panel (35,37) relative said locking cylinders (15) in the vertical direction location.
3. hoisting crane counterweight handing device according to claim 2; It is characterized in that; The position that said turntable (10) is gone up corresponding said vertical connecting panel (35,37) also is provided with recess (17,19), and said block is arranged on the inwall that said recess (17,19) locates; Said limiting stopper is arranged on the said vertical connecting panel (35,37); Wherein, said limiting stopper and said block cooperate so that said vertical connecting panel (35,37) is located in said recess (17,19).
4. hoisting crane counterweight handing device according to claim 1; It is characterized in that; Said lift system is lift cylinder (11,13); Said lift cylinder (11,13) has piston rod; The end of said piston rod is provided with fixture block; Said horizontal connecting plate (31,33) is provided with the hole clipping adaptive with said fixture block, and said hoisting crane also comprises the clamp that is removably disposed between said fixture block and the said hole clipping with the counterweight handing device.
5. hoisting crane counterweight handing device according to claim 4 is characterized in that having breach on the said clamp.
6. hoisting crane counterweight handing device according to claim 1 is characterized in that, said turntable (10) is gone up corresponding said stop pin (15a, 15b) and located also to be provided with position transduser, whether arrives the desired location to detect said stop pin (15a, 15b).
7. according to each described hoisting crane counterweight handing device in the claim 4 to 6, it is characterized in that said lift cylinder is two, comprising: first lift cylinder (11) and second lift cylinder (13); Said stop pin is two also, comprising: first stop pin (15a) and second stop pin (15b).
8. hoisting crane counterweight handing device according to claim 1 is characterized in that, said counterweight (30) lower surface is provided with knock hole, and said vehicle frame is provided with the registration mast that cooperates with said knock hole, and said registration mast is up-small and down-big tapered pin.
9. a hoisting crane is characterized in that, has each described hoisting crane counterweight handing device in the claim 1 to 8.
10. the handling method of a counterweight is characterized in that, each described hoisting crane carries out the loading and unloading of counterweight (30) with the counterweight handing device in the use claim 1 to 8, comprises installation steps and/or demounting procedure, wherein,
Said installation steps comprise:
(1) hoisting crane hangs said counterweight (30) on the vehicle frame through its lifting appliance;
(2) turntable (10) revolution is 180 °, and lift system cooperates with the horizontal connecting plate of said counterweight (30), and said counterweight (30) is vertically moved up;
(3) move to first desired location when said counterweight (30), the stop pin of locking cylinder stretches out, and is inserted in the connecting bore of vertical connecting panel of said counterweight (30), to accomplish the installation of said counterweight (30);
Said demounting procedure comprises:
(1) stop pin of said locking cylinder withdrawal;
(2) said lift system cooperates with said horizontal connecting plate, and said counterweight (30) is vertically moved down;
(3) move to second desired location when said counterweight (30), 180 ° of said turntable (10) revolutions, said hoisting crane hangs other transport vehicles through its lifting appliance with said counterweight (30), to accomplish the dismounting of said counterweight (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110156317A CN102303822A (en) | 2011-06-10 | 2011-06-10 | Balance weight loading and unloading mechanism for crane as well as crane and loading and unloading method for balance weight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110156317A CN102303822A (en) | 2011-06-10 | 2011-06-10 | Balance weight loading and unloading mechanism for crane as well as crane and loading and unloading method for balance weight |
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| Publication Number | Publication Date |
|---|---|
| CN102303822A true CN102303822A (en) | 2012-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110156317A Pending CN102303822A (en) | 2011-06-10 | 2011-06-10 | Balance weight loading and unloading mechanism for crane as well as crane and loading and unloading method for balance weight |
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| CN (1) | CN102303822A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010971A (en) * | 2012-12-27 | 2013-04-03 | 徐州重型机械有限公司 | Crane and hanging mechanism thereof |
| CN103010308A (en) * | 2012-12-27 | 2013-04-03 | 徐州重型机械有限公司 | Crane and split type frame structure thereof |
| CN103626055A (en) * | 2013-12-04 | 2014-03-12 | 中联重科股份有限公司 | Counterweight and crane comprising same |
| CN104675811A (en) * | 2013-11-26 | 2015-06-03 | 中国科学院沈阳自动化研究所 | Accurately-positioning hanging structure |
| CN107934804A (en) * | 2017-11-01 | 2018-04-20 | 芜湖市长江起重设备制造有限公司 | A kind of automobile crane counterweight attaching/detaching apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103010971A (en) * | 2012-12-27 | 2013-04-03 | 徐州重型机械有限公司 | Crane and hanging mechanism thereof |
| CN103010308A (en) * | 2012-12-27 | 2013-04-03 | 徐州重型机械有限公司 | Crane and split type frame structure thereof |
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| CN104675811A (en) * | 2013-11-26 | 2015-06-03 | 中国科学院沈阳自动化研究所 | Accurately-positioning hanging structure |
| CN104675811B (en) * | 2013-11-26 | 2016-09-14 | 中国科学院沈阳自动化研究所 | A kind of hanging structure being accurately positioned |
| CN103626055A (en) * | 2013-12-04 | 2014-03-12 | 中联重科股份有限公司 | Counterweight and crane comprising same |
| CN103626055B (en) * | 2013-12-04 | 2015-12-02 | 中联重科股份有限公司 | Counterweight and comprise the hoisting crane of this counterweight |
| CN107934804A (en) * | 2017-11-01 | 2018-04-20 | 芜湖市长江起重设备制造有限公司 | A kind of automobile crane counterweight attaching/detaching apparatus |
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Address after: 410013 Yuelu District, Hunan, silver basin Road, No. 361, No. Applicant after: Zoomlion Heavy Industry Science & Technology Development Co., Ltd. Address before: 410013 Yuelu District, Hunan, silver basin Road, No. 361, No. Applicant before: Chang Sha Zoomlion Heavy Industry Science & Technology Development Co., Ltd. |
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Application publication date: 20120104 |