CN202967930U - Device for assisting assembly and disassembly of variable-amplitude oil cylinder and crane with device - Google Patents

Device for assisting assembly and disassembly of variable-amplitude oil cylinder and crane with device Download PDF

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Publication number
CN202967930U
CN202967930U CN 201220644755 CN201220644755U CN202967930U CN 202967930 U CN202967930 U CN 202967930U CN 201220644755 CN201220644755 CN 201220644755 CN 201220644755 U CN201220644755 U CN 201220644755U CN 202967930 U CN202967930 U CN 202967930U
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CN
China
Prior art keywords
oil cylinder
amplitude oil
rod assembly
pull bar
amplitude
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Application number
CN 201220644755
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Chinese (zh)
Inventor
周磊
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中联重科股份有限公司
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Priority to CN 201220644755 priority Critical patent/CN202967930U/en
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Publication of CN202967930U publication Critical patent/CN202967930U/en

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Abstract

The utility model provides a device for assisting assembly and disassembly of a variable-amplitude oil cylinder and a crane with the device. The device for assisting assembly and disassembly of the variable-amplitude oil cylinder comprises a tensile oil cylinder (4) and a pull rod assembly (2); the first end of the tensile oil cylinder (4) is articulated with a turntable (3) of the crane; the first end of the pull rod assembly (2) is articulated with the second end of the tensile oil cylinder (4); and the second end of the pull rod assembly (2) is articulated with the variable-amplitude oil cylinder (1) of the crane. According to the utility model, the pull rod assembly is used as a connection part; in the event of lifting the variable-amplitude oil cylinder to be stressed, the deformation of the pull rod assembly is very small, therefore, the rotation angle of the variable-amplitude oil cylinder can be precisely controlled by controlling the stroke of the tensile oil cylinder; and accurate locating of the variable-amplitude oil cylinder is facilitated.

Description

Amplitude oil cylinder is installed and removed auxiliary device and is had the hoisting crane of this device

Technical field

The utility model relates to the elevator machinery field, more specifically, relates to a kind of amplitude oil cylinder mounting or dismounting auxiliary device and has the hoisting crane of this device.

Background technology

Development along with wind-powered electricity generation, chemical industry, nuclear power, the hoisting crane tonnages such as car hosit are increasing, the weight of each cover of hoisting crane is also done larger and larger, satisfy the requirement of road rules when guaranteeing that car load is set out on a journey, need first arm to be disassembled independent transportation from turntable, must need repeatedly to carry out the installation of amplitude oil cylinder in the assembling and dissembling process of arm.

As shown in Figure 1, in the first prior art, hoisting crane when transition arm 8 with separate with the car load of turntable 3 with vehicle frame 9.For ease of the interrelation that 8 of amplitude oil cylinder 1 and arms are described, arm 8 is drawn in Fig. 1.In the prior art during crane transition turntable 3 arrange towards the tailstock, before the luffing of amplitude oil cylinder 1, hinge 12 is connected by bearing pin with the lower hinge of turntable 3, amplitude oil cylinder 1 can be rotated around this bearing pin, there is nylon block 14 lower end of amplitude oil cylinder 1, amplitude oil cylinder is placed on by nylon block 14 on the rear support leg 91 of hoisting crane, walks with garage together with turntable 3.After arriving the work-yard, need to pendulum on amplitude oil cylinder 1 be made luffing by auxiliary hoist before hinge 12 aims at the front hinge 81 of arm 8, complete the installation of amplitude oil cylinder 1 and arm 8 after the insertion bearing pin.

In the first prior art, when amplitude oil cylinder 1 is assembled with arm 8, be the front hinge 81 of hinge 12 before the aligning luffing with arm 8, need to lift amplitude oil cylinder 1 by auxiliary hoist, amplitude oil cylinder 1 bearing pin of hinge 12 and the lower hinge of turntable 3 before the luffing that connects amplitude oil cylinder 1 is rotated, until before luffing, hinge 12 is aimed at the front hinge 81 of arm 8.Need to repeatedly adjust under the effect of auxiliary hoist in whole process, the cost of completing once mounting or dismounting is large, and efficient is low.

For the connection procedure of the arm of simplifying amplitude oil cylinder and hoisting crane, as shown in Figure 2, be provided with amplitude oil cylinder mounting or dismounting auxiliary device in the second prior art.Welded ear hinge 5 on turntable 3, stretching oil cylinder 4 has been housed on it, be connected by steel rope 2 ' between the steel rope connecting portion 13 ' of stretching oil cylinder 4 and change spoke oil cylinder 1.Under the off working state of amplitude oil cylinder mounting or dismounting auxiliary device, amplitude oil cylinder 1 to be installed is in horizontal positioned, under the mode of operation of amplitude oil cylinder mounting or dismounting auxiliary device, stretching oil cylinder 4 is begun to shrink by the initial condition of entirely stretching, because the steel rope 2 ' that is connected with stretching oil cylinder 4 pulls the bearing pin of amplitude oil cylinder 1 lower hinge of hinge 12 and turntable 3 before being connected luffing rotate and make amplitude oil cylinder 1 slowly increase along D direction shown in Figure 2, until contact with the installation locating piece of arm, complete the installation of amplitude oil cylinder 1 after the insertion bearing pin.

In the second prior art, realized utilizing the stretching oil cylinder 4 of car load self assembling to add the next auxiliary assembling amplitude oil cylinder 1 of steel rope 2 '.these the second problems of the prior art mainly contain: a) do not solve the fixation problem of stretching oil cylinder 4 under off working state, under standing state, stretching oil cylinder 4 will inevitably swing by the connection bearing pin between stretching oil cylinder 4 and ear hinge 5 in the car walking process repeatedly, easily cause stretching oil cylinder 4 repeatedly to collide with turntable 3, cause the damage of stretching oil cylinder 4, b) in the second prior art, the action bang path is that stretching oil cylinder 4 retractions---tense wire rope 2 '---are mentioned amplitude oil cylinder 1, thereby amplitude oil cylinder 1 is stretched to required setting angle, but steel rope 2 ' is typical flexible member, its length can change along with the size variation of tensile force, and amplitude oil cylinder 1 accurately will be mentioned to setting angle, it must be certain requiring the variable quantity of steel rope 2 ', this is the conflict body, and steel rope 2 ' also can produce plastic deformation after repeatedly lifting, whole length can lengthen, thereby bring difficulty for the calculating of the amount of contraction of stretching oil cylinder 4 required contractions in the time of will reaching setting angle, c) steel rope 2 ' generally twists into thigh, can rotate when tension, thereby the piston rod that can drive stretching oil cylinder 4 rotates, and easily causes the damage of stretching oil cylinder 4, d) in the second prior art after amplitude oil cylinder 1 assembles, steel rope 2 ' just is placed on above amplitude oil cylinder 1, easily causes winding, does not solve the placement issue of steel rope 2 '.

The utility model content

The utility model purpose is to provide a kind of amplitude oil cylinder mounting or dismounting auxiliary device and has the hoisting crane of this device, can accurately control the rotational angle of amplitude oil cylinder, is convenient to the accurate location of amplitude oil cylinder.

The utility model provides a kind of amplitude oil cylinder mounting or dismounting auxiliary device, comprising: the stretching oil cylinder, and the first end of stretching oil cylinder is articulated in the turntable of hoisting crane; Rod assembly, the second end of the first end of rod assembly and stretching oil cylinder is hinged, and the second end of rod assembly and the amplitude oil cylinder of hoisting crane are hinged.

Further, the second end of the first end of rod assembly and stretching oil cylinder removably is articulated and connected, rod assembly comprises a plurality of pull bars that connect successively, and at least one pull bar from the first end of rod assembly in a plurality of pull bars arranges collapsibly with respect to all the other pull bars; Amplitude oil cylinder mounting or dismounting auxiliary device also comprises the first inhibiting device, and the first inhibiting device is arranged on amplitude oil cylinder, for the amplitude oil cylinder that is fixed in of the rod assembly after folding.

Further, the first inhibiting device comprises anchor ear, and anchor ear is set on amplitude oil cylinder and has the locking part that the folded part of the rod assembly after folding is fixed in amplitude oil cylinder.

Further, locking part comprises: groove, towards rod assembly and be arranged at ordinatedly on anchor ear with folded part; Locking piece is used for closed pockets to be limited in groove with auxiliary section groove fit on folded part.

Further, rod assembly comprises the first pull bar of the first end that is positioned at rod assembly and second pull bar hinged with the first pull bar, one in the first pull bar and the second pull bar is single arm-tie, and another is two arm-ties, and the first pull bar arranges collapsibly with respect to the second pull bar.

Further, amplitude oil cylinder mounting or dismounting auxiliary device also comprises the second inhibiting device that is arranged at turntable, and the second inhibiting device is used for when the second end of the first end of rod assembly and stretching oil cylinder is in disassembly status, and the second end of stretching oil cylinder is connected in turntable.

Further, amplitude oil cylinder mounting or dismounting auxiliary device comprises the first hinge ear, and the first end of stretching oil cylinder is articulated in the turntable of hoisting crane by the first hinge ear; The second inhibiting device comprise the second hinge ear and with the second spacing bearing pin of coordinating of hinge ear, when the second end of the first end of rod assembly and stretching oil cylinder is in disassembly status, cuts with scissors ear by spacing bearing pin and second the second end of stretching oil cylinder be connected in turntable.

The utility model also provides a kind of hoisting crane, comprise arm, turntable, amplitude oil cylinder and be used for the amplitude oil cylinder that amplitude oil cylinder is installed on arm is installed and removed auxiliary device, wherein, amplitude oil cylinder mounting or dismounting auxiliary device is aforesaid amplitude oil cylinder mounting or dismounting auxiliary device, the first end of the stretching oil cylinder of amplitude oil cylinder mounting or dismounting auxiliary device is articulated in turntable, the first end of the rod assembly of amplitude oil cylinder mounting or dismounting auxiliary device and the second end of stretching oil cylinder are hinged, and the second end and the amplitude oil cylinder of rod assembly are hinged.

According to amplitude oil cylinder of the present utility model mounting or dismounting auxiliary device and have the hoisting crane of this device, utilize rod assembly as link, when rod assembly is stressed lifting amplitude oil cylinder, deflection is very little, thereby the stroke by the restrained stretching oil cylinder, just can accurately control the rotational angle of amplitude oil cylinder, be convenient to the accurate location of amplitude oil cylinder.

Description of drawings

The accompanying drawing that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the structural representation of the hoisting crane of the first prior art;

Fig. 2 is the structural representation of the hoisting crane of the second prior art;

Fig. 3 is in structural representation under off working state according to the amplitude oil cylinder of hoisting crane of the present utility model mounting or dismounting auxiliary device;

Fig. 4 is that the B-B of Fig. 3 is to analysing and observe the structure for amplifying schematic diagram;

Fig. 5 is in structural representation under confined state according to the amplitude oil cylinder of hoisting crane of the present utility model mounting or dismounting auxiliary device;

Fig. 6 is the structural representation under in running order according to the amplitude oil cylinder of hoisting crane of the present utility model mounting or dismounting auxiliary device;

Fig. 7 is the plan structure schematic diagram of Fig. 6.

The specific embodiment

Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.

The amplitude oil cylinder mounting or dismounting auxiliary device that the utility model relates to can be assisted installation to amplitude oil cylinder when crane transition.

Amplitude oil cylinder mounting or dismounting auxiliary device of the present utility model mainly comprises stretching oil cylinder 4 and rod assembly 2.The first end of stretching oil cylinder 4 is articulated in the turntable 3 of hoisting crane.The second end of the first end of rod assembly 2 and stretching oil cylinder 4 is hinged, and the second end of rod assembly 2 and the amplitude oil cylinder 1 of hoisting crane are hinged.

According to amplitude oil cylinder mounting or dismounting auxiliary device of the present utility model, utilize rod assembly as link, when rod assembly is stressed lifting amplitude oil cylinder, deflection is very little, thereby the stroke by the restrained stretching oil cylinder, just can accurately control the rotational angle of amplitude oil cylinder, be convenient to the accurate location of amplitude oil cylinder.This amplitude oil cylinder mounting or dismounting auxiliary device utilizes pull bar to replace the steel rope drag-line as link, can actv. prevent the rotation of the drawing oil cylinder piston rod when drag-line is exceptionally straight, thereby improve the reliability of whole amplitude oil cylinder mounting or dismounting auxiliary device, strengthened the safety in utilization of stretching oil cylinder.In addition, this amplitude oil cylinder mounting or dismounting auxiliary device can utilize the hydraulic power of hoisting crane self to complete lifting of amplitude oil cylinder, thereby completes the assembling of amplitude oil cylinder and arm, does not need to configure in addition an auxiliary hoist again, and cost of installation and labour intensity are lower.

As extremely shown in Figure 7 in Fig. 3, in the present embodiment, the second end of the first end of rod assembly 2 and stretching oil cylinder 4 removably is articulated and connected, rod assembly 2 comprises a plurality of pull bars that connect successively, and at least one pull bar in a plurality of pull bars from the first end of rod assembly 2 arranges collapsibly with respect to all the other pull bars.The amplitude oil cylinder mounting or dismounting auxiliary device of the present embodiment also comprises the first inhibiting device.The first inhibiting device is arranged on amplitude oil cylinder 1, and the rod assembly 2 after being used for folding is fixed in amplitude oil cylinder 1.

In the present embodiment, the first inhibiting device comprises anchor ear 7 particularly, anchor ear 7 be set on amplitude oil cylinder 1 and have fixed fold after the locking part of folded part of rod assembly 2.Wherein locking part comprises groove and locking piece 71.Groove is arranged on anchor ear 7 ordinatedly towards rod assembly 2 and with the folded part of rod assembly 2 after folding.Locking piece 71 is used for closed pockets to be limited in groove with auxiliary section groove fit folded part.Employing is with the reasonable Arrangement of anchor ear 7 and the rod assembly 2 of groove, can make rod assembly 2 in use length of run satisfy job requirement, but when not using also actv. be contracted on amplitude oil cylinder 1, thereby make whole amplitude oil cylinder mounting or dismounting assistant apparatus structure rationally and compact.

The rod assembly 2 of the present embodiment comprises the first pull bar 24 of the first end that is positioned at rod assembly 2, second pull bar 23 hinged with the first pull bar 24, with hinged the 3rd pull bar 22 of the second pull bar 23 and the four-pull-rod 21 hinged with the 3rd pull bar, the other end of four-pull-rod 21 consists of the second end of rod assembly 2, and the second end of rod assembly 2 cuts with scissors ear 13 by luffing and is articulated on amplitude oil cylinder 1.Wherein preferably, one in the first pull bar 24 and the second pull bar 23 is single arm-tie, and another is two arm-ties, and the first pull bar 24 arranges collapsibly with respect to the second pull bar 23.As shown in Figure 7, in the present embodiment, the first pull bar 24 and the 3rd pull bar 22 are two arm-ties, and the second pull bar 23 and four-pull-rod 21 are single arm-tie.

In addition preferably, amplitude oil cylinder mounting or dismounting auxiliary device comprises the first hinge ear 5, and the first end of stretching oil cylinder 4 is articulated in the turntable 3 of hoisting crane by the first hinge ear 5.Amplitude oil cylinder mounting or dismounting auxiliary device also comprises the second inhibiting device, and the second inhibiting device is used for when the second end of the first end of rod assembly 2 and stretching oil cylinder 4 is in disassembly status, and the second end of stretching oil cylinder 4 is connected in turntable 3.

Second inhibiting device of the present embodiment comprises the second hinge ear 6 and the spacing bearing pin that coordinates with the second hinge ear 6 particularly, when the second end of the first end of rod assembly 2 and stretching oil cylinder 4 is in disassembly status, by spacing bearing pin and the second hinge ear 6, the second end of stretching oil cylinder 4 is connected in turntable 3.Hinge ear on the two ends of stretching oil cylinder 4 are all used bearing pin and are welded on turntable is connected, and makes stretching oil cylinder 4 obtain well fixing and can not shake and impact, and can effectively protect stretching oil cylinder 4.

Hoisting crane of the present utility model comprises vehicle frame 9, arm 8, is positioned at turntable 3, the amplitude oil cylinder 1 on vehicle frame 9 and is used for the above-mentioned amplitude oil cylinder that amplitude oil cylinder 1 is installed on arm 8 is installed and removed auxiliary device, the first end of the stretching oil cylinder 4 of amplitude oil cylinder mounting or dismounting auxiliary device is articulated in turntable 3, the first end of the rod assembly 2 of amplitude oil cylinder mounting or dismounting auxiliary device and the second end of stretching oil cylinder 4 removably are articulated and connected, and the second end and the amplitude oil cylinder 1 of rod assembly 2 are hinged.

In above amplitude oil cylinder mounting or dismounting auxiliary device, in the time will being placed in amplitude oil cylinder 1 on arm 8, can utilize the self power source of the mounting or dismounting of amplitude oil cylinder on the hoisting crane car load auxiliary device oil cylinder 4 that namely stretches that amplitude oil cylinder 1 is lifted to the appropriate location, and need to be by other auxiliary hoist, and amplitude oil cylinder mounting or dismounting auxiliary device can all be contracted on car load when being in off working state, also can walk with garage compact conformation.Amplitude oil cylinder mounting or dismounting auxiliary device can finely launch again when in running order, satisfies hinge 11 before the luffing of amplitude oil cylinder 1 is lifted to arm 8 functional requirement at earhole place is installed accordingly.

The principle of work of above embodiment specifically describes as follows.In the following description, " left side " and " right side " all refers to left side and the right side in corresponding accompanying drawing, and " front " refers to the bearing of trend of the arm 8 of hoisting crane, and " afterwards " refers to the direction relative with " front ".

Fig. 3 is in structural representation under off working state according to the amplitude oil cylinder of hoisting crane of the present utility model mounting or dismounting auxiliary device; Fig. 4 is that the B-B of Fig. 3 is to analysing and observe the structure for amplifying schematic diagram.

Under the off working state of amplitude oil cylinder mounting or dismounting auxiliary device, amplitude oil cylinder 1 is horizontal or is inverted into level and becomes negative angle, specifically depends on the amplitude oil cylinder bracing or strutting arrangement.Off working state lower link assembly 2 is in contraction state, wherein the second end of rod assembly 2 namely the right-hand member of four-pull-rod 21 cut with scissors ear 13 by luffing and amplitude oil cylinder 2 hinged.The first pull bar 24 left ends are connected by the right-hand member of bearing pin with the second pull bar 23.

As shown in Figure 3 and Figure 4, the first pull bar 24 is under off working state, take the first pull bar 24 left end bearing pins as center of turn, the right-hand member of the first pull bar 24 is turned near near the 3rd pull bar 22 and bearing pin that the second pull bar 23 is connected, each pull bar 21 of the line of centers and all the other of the first pull bar 24,22 parallel with 23 and the line of centers of amplitude oil cylinder 1.at this moment, the second pull bar 23 that is made of single arm-tie as shown in Figure 4 just is embedded into the first pull bar 24 inside that are made of two arm-ties, and with the first pull bar 24 and the second pull bar 23 as an embed wholly in the groove of anchor ear 7, the bolt 71 of recycling on anchor ear 7 with the partial fixing of the first pull bar 24 and the second pull bar 23 and groove fit in groove, rod assembly 2 and amplitude oil cylinder 1 are fixed together, no matter to be during in work or during inoperative in amplitude oil cylinder 1, rod assembly 2 all can rotate together with luffing oil cylinder 1 hinge 12 after luffing, thereby solved the placement issue of steel rope drag-line in the prior art, can not cause wirerope-winding.

Simultaneously, under off working state, the first end of the stretching oil cylinder 4 in amplitude oil cylinder mounting or dismounting auxiliary device is connected on the first hinge ear 5 by bearing pin, and the second end of stretching oil cylinder 4 is connected on the second hinge ear 6 by bearing pin.The first hinge ear 5 and the second hinge ear 6 all are fixed on turntable 3 by welding manner, thereby stretching oil cylinder 4 is completely fixed on turntable 3.

Illustrate below in conjunction with Fig. 5 to Fig. 7 how this device assists the arrangement of completing amplitude oil cylinder 1.Wherein, Fig. 5 is in structural representation under confined state according to the amplitude oil cylinder of hoisting crane of the present utility model mounting or dismounting auxiliary device; Fig. 6 is the structural representation under in running order according to the amplitude oil cylinder of hoisting crane of the present utility model mounting or dismounting auxiliary device; Fig. 7 is the plan structure schematic diagram of Fig. 6.

The initial condition of amplitude oil cylinder mounting or dismounting auxiliary device before assembling as shown in Figure 3 and Figure 4, after the luffing of amplitude oil cylinder 1, hinge 12 is connected with turntable 3 at this moment, and can rotate around corresponding connection bearing pin, to the installation of amplitude oil cylinder 1 be exactly amplitude oil cylinder 1 is lifted and after luffing hinge 12 rotations to shown in Figure 6 be setting angle A with horizontal direction.The concrete steps that realize this process are:

Bolt 71 on anchor ear 7 is unclamped and takes out, unclamp the first pull bar 24 and the second pull bar 23.Take out the first pull bar 24 and the second pull bar 23 from the groove of anchor ear 7 after, bolt 71 is screwed onto on anchor ear 7 again.

Make the first pull bar 24 around the connecting pin between the first pull bar 24 and the second pull bar 23 axial turntable 3 directions turn over setting angle, the direction of rotation direction as shown in arrow R in Fig. 5.

Unclamp the spacing bearing pin of 6, stretching oil cylinder 4 and the second hinge ear, the operation hydraulic control system stretches out the piston rod that lifts oil cylinder 4 fully.

The right-hand member of the first pull bar 24 is alignd with the front hinge of stretching oil cylinder 4 second ends, and insert to connect bearing pin, thereby complete being connected of the first pull bar 24 and stretching oil cylinder 4, also namely complete being connected of rod assembly 2 and stretching oil cylinder 4.

The operation hydraulic efficiency pressure system, make the piston rod retraction of stretching oil cylinder 4, so just, can be with amplitude oil cylinder 1 pull-up, the bearing pin that makes it after luffing hinge 12 places rotates, because the distortion of rod assembly 2 is considerably less, the angle of amplitude oil cylinder 1 pull-up, can be directly by the stroke decision of stretching oil cylinder 4, the size of the path increment of restrained stretching oil cylinder 4 just can be controlled amplitude oil cylinder 1 pull-up to required setting angle A, reach the final condition of amplitude oil cylinder 1, this final condition as shown in Figure 6 and Figure 7.

After completing the installation of amplitude oil cylinder 1, the piston rod that lifts oil cylinder 4 all bounces back, cause interference for the work that prevents 2 pairs of amplitude oil cylinder 1 of rod assembly this moment, can operate hydraulic efficiency pressure system stretches out piston rod again, make rod assembly 2 be in relaxed state, unclamp the bearing pin that is connected of the first pull bar 24 and 4 of stretching oil cylinders, the front hinge of the second end of stretching oil cylinder 4 is connected with the second hinge ear 6 again, complete fixing of stretching oil cylinder 4; The bearing pin backward rotation that the first pull bar 24 is connected with the second pull bar 23 around the first pull bar 24, the second pull bar 23 and the first pull bar 24 are entered in the groove of anchor ear 7, in groove upper end inserting bolt 71, tighten the nut that coordinates with bolt 71 again, complete the fixing of rod assembly 2.

Above embodiment should not be construed as limiting the utility model, and for example, the pull bar in above embodiment is four, but the quantity of pull bar can be set to two as required, more than three or five.In addition, can realize the folding of rod assembly 2, and make rod assembly form that folded part is fixed in amplitude oil cylinder all can be used as the alternative form of the rod assembly of above embodiment, for example, first to fourth pull bar in above embodiment can all be set to the form of single arm-tie; Each component part of rod assembly can also be set to have the form etc. of the pull bar of round section.The first inhibiting device also can be set to various ways, for example, it can be the spacing otic placode that is welded in amplitude oil cylinder 1, on the folded part of the rod assembly 2 after folding, spacing hole is set, the earhole by passing spacing otic placode and pin or the threaded connector of spacing hole are fixed etc. rod assembly 2.

As can be seen from the above description, the utility model the above embodiments have realized following technique effect:

1) utilize pull bar as link, can accurately control the rotational angle of amplitude oil cylinder, be convenient to the accurate location of amplitude oil cylinder.

2) pull bar replaces the steel rope drag-line as link, can actv. prevents the rotation of the piston rod of stretching oil cylinder when drag-line is exceptionally straight, thereby improves the reliability of auxiliary device, has strengthened the safety in utilization of stretching oil cylinder.

3) utilize the hydraulic power of hoisting crane self to complete the effect that lifts of amplitude oil cylinder, complete the assembling of luffing and arm, do not need exception to configure again an auxiliary hoist, reduced cost of installation and labour intensity.

4) adopt reasonable Arrangement with anchor ear and the pull bar of groove, make pull bar in use length of run satisfy job requirement, but when not using also actv. be contracted on amplitude oil cylinder, whole assistant apparatus structure is rationally and compact.

5) the hinge ear on the two ends of stretching oil cylinder are all used bearing pin and are welded on turntable is connected, and makes to lift oil cylinder and obtained well fixingly and can not shake and impact, and can effectively protect and lift oil cylinder.

The above is only preferred embodiment of the present utility model, is not limited to the utility model, and 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 modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (8)

1. an amplitude oil cylinder mounting or dismounting auxiliary device, is characterized in that, comprising:
Stretching oil cylinder (4), the first end of described stretching oil cylinder (4) are articulated in the turntable (3) of hoisting crane;
Rod assembly (2), the second end of the first end of described rod assembly (2) and described stretching oil cylinder (4) is hinged, and the amplitude oil cylinder (1) of the second end of described rod assembly (2) and described hoisting crane is hinged.
2. amplitude oil cylinder mounting or dismounting auxiliary device according to claim 1, is characterized in that,
The second end of the first end of described rod assembly (2) and described stretching oil cylinder (4) removably is articulated and connected, described rod assembly (2) comprises a plurality of pull bars that connect successively, and at least one pull bar from the first end of described rod assembly (2) in described a plurality of pull bars arranges collapsibly with respect to all the other pull bars;
Described amplitude oil cylinder mounting or dismounting auxiliary device also comprises the first inhibiting device, and described the first inhibiting device is arranged on described amplitude oil cylinder (1), the described rod assembly (2) after being used for folding be fixed in described amplitude oil cylinder (1).
3. amplitude oil cylinder according to claim 2 is installed and removed auxiliary device, it is characterized in that, described the first inhibiting device comprises anchor ear (7), and described anchor ear (7) is set in described amplitude oil cylinder (1) and goes up and have a locking part that the folded part of the described rod assembly (2) after folding is fixed in described amplitude oil cylinder (1).
4. amplitude oil cylinder mounting or dismounting auxiliary device according to claim 3, is characterized in that, described locking part comprises:
Groove is arranged on described anchor ear (7) ordinatedly towards described rod assembly (2) and with described folded part;
Locking piece (71) is used for sealing described groove to be limited in described groove with auxiliary section described groove fit on described folded part.
5. according to claim 1 to 4, the described amplitude oil cylinder of any one is installed and removed auxiliary device, it is characterized in that, described rod assembly (2) comprises first pull bar (24) of the first end that is positioned at described rod assembly (2) and second pull bar (23) hinged with described the first pull bar (24), one in described the first pull bar (24) and described the second pull bar (23) is single arm-tie, another is two arm-ties, and described the first pull bar (24) arranges collapsibly with respect to described the second pull bar (23).
6. according to claim 1 to 4, the described amplitude oil cylinder of any one is installed and removed auxiliary device, it is characterized in that, described amplitude oil cylinder mounting or dismounting auxiliary device also comprises the second inhibiting device that is arranged at described turntable (3), described the second inhibiting device is used for when the second end of the first end of described rod assembly (2) and described stretching oil cylinder (4) is in disassembly status, and the second end of described stretching oil cylinder (4) is connected in described turntable (3).
7. amplitude oil cylinder mounting or dismounting auxiliary device according to claim 6, is characterized in that,
Described amplitude oil cylinder mounting or dismounting auxiliary device comprises the first hinge ear (5), and the first end of described stretching oil cylinder (4) is articulated in the turntable (3) of hoisting crane by described the first hinge ear (5);
Described the second inhibiting device comprises the second hinge ear (6) and the spacing bearing pin that coordinates with described the second hinge ear, when the second end of the first end of described rod assembly (2) and described stretching oil cylinder (4) is in disassembly status, by described spacing bearing pin and described the second hinge ear (6), the second end of described stretching oil cylinder (4) is connected in described turntable (3).
8. hoisting crane, comprise arm (8), turntable (3), amplitude oil cylinder (1) and be used for described amplitude oil cylinder (1) is installed on amplitude oil cylinder mounting or dismounting auxiliary device on described arm (8), it is characterized in that, described amplitude oil cylinder mounting or dismounting auxiliary device is the described amplitude oil cylinder mounting or dismounting of any one according to claim 1 to 7 auxiliary device, the first end of the stretching oil cylinder (4) of described amplitude oil cylinder mounting or dismounting auxiliary device is articulated in described turntable (3), the first end of the rod assembly (2) of described amplitude oil cylinder mounting or dismounting auxiliary device and the second end of described stretching oil cylinder (4) are hinged, the second end of described rod assembly (2) and described amplitude oil cylinder (1) are hinged.
CN 201220644755 2012-11-29 2012-11-29 Device for assisting assembly and disassembly of variable-amplitude oil cylinder and crane with device CN202967930U (en)

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CN104071710A (en) * 2014-07-01 2014-10-01 徐工集团工程机械股份有限公司 Crane and stepless amplitude variable sub-arm device
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CN104340889A (en) * 2014-10-31 2015-02-11 徐工集团工程机械股份有限公司 Crane and amplitude variable system thereof
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CN110589696A (en) * 2019-09-19 2019-12-20 青岛海西重机有限责任公司 Steel wire rope luffing jib loading boom anti-falling device and crane

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103318785A (en) * 2013-07-08 2013-09-25 徐州重型机械有限公司 Crane and fixed auxiliary jib amplitude-changing device thereof
CN103318785B (en) * 2013-07-08 2015-06-17 徐州重型机械有限公司 Crane and fixed auxiliary jib amplitude-changing device thereof
CN103626048A (en) * 2013-11-11 2014-03-12 中联重科股份有限公司 Self-assembled auxiliary device and crane
CN103626048B (en) * 2013-11-11 2016-01-27 中联重科股份有限公司 A kind of self-assembly auxiliary device and hoisting crane
CN104071710A (en) * 2014-07-01 2014-10-01 徐工集团工程机械股份有限公司 Crane and stepless amplitude variable sub-arm device
CN104176654A (en) * 2014-08-29 2014-12-03 中联重科股份有限公司 Pivotal structure and crane derrick component with same
CN104340889A (en) * 2014-10-31 2015-02-11 徐工集团工程机械股份有限公司 Crane and amplitude variable system thereof
CN107902569A (en) * 2017-12-13 2018-04-13 三汽车起重机械有限公司 Crane and cranage ballasting method
CN107902569B (en) * 2017-12-13 2018-07-31 三一汽车起重机械有限公司 Crane
CN110589696A (en) * 2019-09-19 2019-12-20 青岛海西重机有限责任公司 Steel wire rope luffing jib loading boom anti-falling device and crane

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