CN209411626U - A kind of connecton layout of telescopic arm of crane - Google Patents

Abstract

The utility model discloses a kind of connecton layouts of telescopic arm of crane comprising: the first pulley portion between the inner arm and outer arm adjacent positioned at telescoping boom；The cable or soft pipeline being wound in the first pulley portion, the cable or soft pipeline can be slided around the first pulley portion, and the arm head of the outer arm is fixed in one end of the cable or soft pipeline, and the other end is fixed on the arm head of the inner arm；And component is tightened, the component of tightening is connected with the first pulley portion, for providing the tension tightened to the cable or soft pipeline.It is to be fixedly connected between the cables or soft pipeline at different levels of the utility model, shielding line cable can be used, a power supply and communication network can be formed on boom in this way, oil circuit can also be connected by hose, more application spaces can be extended.

Description

A kind of connecton layout of telescopic arm of crane

Technical field

The utility model relates to a kind of connecton layout of telescopic arm of crane, belong to telescopic arm of crane cable or Soft pipeline/cable alignment technology field.

Background technique

Data acquisition transmission on telescopic arm of crane is at present mainly by terminal box transmission mode.Due to telescoping boom Expansion performance, except the first joint arm is connected with turntable, arm head position and operating room relative position are unchanged outer, remaining every joint arm Arm head is flexible with boom, and the relative position of arm head and operating room changes as hoisting arm expansion acts.

The essence of terminal box is a turntable, and bracing wire (cable or soft pipeline and/or cable) is wrapped on turntable in order, The fixing end of bracing wire is flexibly connected with the newel of turntable, is furnished with bus ring on newel, bracing wire fixing end end is with number A conductive metal reed, guide rails different from bus ring are in contact each reed respectively, need to keep certain while contact Pressure to ensure to disengage with the guide rail of slip ring or poor contact, the inside of newel have several cables connection current collections sliding Ring.It is furnished with encoder on center of turntable column simultaneously, and has scroll spring, scroll spring provides turning power for turntable.Bracing wire Movable end stretch out and be fixed on need data acquire or power supply boom head, usual movable end be fixed on minor details arm arm head and The arm head of second joint arm.When boom stretches out, bracing wire movable end prolongs boom stretching direction and moves together with boom, and bracing wire is stretched out, Turntable is driven to rotate by the center of circle of newel simultaneously, newel is fixed in external mounting base, does not rotate with turntable.It is conductive at this time Metal spring leaf rotational slide on bus ring, electric power and signal of communication are conducted sliding to current collection by the conductive reed of end of pulling Ring, and the fixed cable by being connected with bus ring is conducted to relevant device, and the encoder on center of turntable column is according to turning The swing offset of disk can converse the length of boom stretching, and scroll spring then provides the pulling force that bracing wire is pulled back.When boom returns When contracting, bracing wire movable end bounces back together with boom, and bracing wire withdrawal is wrapped on turntable by turntable under the action of scroll spring.

There are following defects for terminal box used at present:

One, conducting wire on-fixed contacts, at high cost.Terminal box needs to connect by the activity of metal spring leaf and center bus ring It touches to solve the problems, such as cable with the winding of turntable rotation generation, the process for resulting in signal to transmit in this way has to pass through metal spring leaf Inevitably exist during prolonged use with the movable breaker point of bus ring due to being movable contact point Contact is worn and pollutes, the poor contact that the factors such as reed aging generate.Moreover, when transmitting signal of communication, armature contact Inevitably there may be noise jamming, lead to distorted signals.In order to reduce the influence of above-mentioned factor as far as possible, producer is not Specially treated is not done to bus ring and metal spring leaf, using the more complicated technique of better material, cause overall cost compared with It is high.

Two, volume is larger, installation outside boom.Since the length that boom stretches out is longer, the extension elongation and boom of bracing wire Extension elongation is consistent, in addition a certain amount of reserved line, these wire lengths will eventually be converted into terminal box turntable inside terminal box Rotating cycle, due to the presence of scroll spring, the size of terminal box can not be done smaller.Biggish size determines terminal box only It can be mounted on outside boom, and can only there is a possibility that by foreign objects on two coxostermum of boom.Due to being that outside is walked Line, every section boom head need to install the guide rail of bracing wire, to limit the hunting range of bracing wire.However, being still remained in actual use Disconnected situation is scraped in bracing wire by foreign object.

Three, one-dot chain line.Since the working principle of terminal box limits, the bracing wire of terminal box can only be with a wherein section for boom Arm head be connected, and cannot achieve a terminal box simultaneously for multiple boom arm heads.If remaining several joint arm need to power or Person's data transmission, it is necessary to which the terminal box for increasing respective numbers just can increase tie point, not only increase cost, and more Cable bring biggish difficulty to installation.

Four, the thickness material-structure etc. of bracing wire is restricted.Scroll spring inside terminal box is for keeping bracing wire to be in Tight state, and assist recycling bracing wire.But when the distance that bracing wire is stretched out is longer, turntable rotating cycle is more, at this time scrollwork The pull-back forces that spring generates are bigger.In fact, being drawn when bracing wire extension elongation reaches the half that boom is stretched entirely or 2/3rds Pull-back forces on line are very big, or even the case where bracing wire is hurted sb.'s feelings because of external force fracture rebound occur.Due to biggish pull-back forces Presence, bracing wire must have enough intensity, and just can guarantee will not be damaged in use by pull-back forces.However due to terminal box ruler The limitation of the various aspects such as very little, bracing wire needs are made relatively thin, this mention bracing wire must using good material, cost further It is high.

Comprehensive situation above, terminal box are limited its scope of application due to technical problem more than presence, more at present Be intended only as linear transducer, to the function that the power supply of boom head and simple data acquire, and can not be as a kind of comprehensive Power supply and data communication wiring system come using.

Utility model content

In order to overcome problems of the prior art, the utility model, which provides, a kind of is totally different from the novel of terminal box Telescopic arm of crane connecton layout, specific technical solution is as follows.

A kind of connecton layout of telescopic arm of crane characterized by comprising

First pulley portion between the inner arm and outer arm adjacent positioned at telescoping boom；

The cable or soft pipeline being wound in the first pulley portion, the cable or soft pipeline can be around the first pulleys The arm head of the outer arm is fixed in one end of portion's sliding, the cable or soft pipeline, and the other end is fixed on the arm head of the inner arm； And

Component is tightened, the component of tightening is connected with the first pulley portion, for providing the cable or soft pipeline The tension tightened.It should be understood that cable or tightening for soft pipeline refer to that cable or soft pipeline are in tensional state, do not wind Linear state is generally in the cable in first pulley portion or soft pipeline part.The root and arm head refer to comprising boom root and Boom arm head can be determined to a part of section of extension in the middle part of boom, specific section size according to actual use situation, and root is One joint arm stretches out one end of direction upstream side, and arm head is one end that a joint arm stretches out direction downstream side.

To the further improvement in above-mentioned technical proposal, the first pulley portion includes the retraction direction along telescoping boom The first pulley support portion and second pulley support portion set gradually, the first pulley support portion and second pulley support Portion is provided at least two pulleys, the cable or soft pipeline around whole pulleys, the second pulley support portion It can be slided relative to the outer arm, the guide rail for guiding the second pulley support portion is provided on the outer arm or inner arm；

The component of tightening includes winder and guide line, and the root of the outer arm is arranged in the winder, described to draw One end of conducting wire is connect with the second pulley support portion, and the other end is wound in the winder.

To the further improvement in above-mentioned technical proposal, the component of tightening includes winder and guide line, the spiral The root of the outer arm is arranged in device, and one end of the guide line is connect with the first pulley portion, and the other end is wound in described Winder.

To the further improvement in above-mentioned technical proposal, the component of tightening includes second pulley portion and guide line, described The relative position in second pulley portion and the first pulley portion immobilizes or the second pulley portion and the first pulley Portion passes through elastomeric element elastic connection；

The guide line can be slided around the second pulley portion, and the root of the outer arm is fixed in one end of the guide line Portion, the other end are fixed on the root of the inner arm；

Alternatively, the installation site of the guide line and the cable or soft pipeline is exchanged: the guide line is wound on described the In one sheave portion, the arm head of the inner arm is fixed in one end of the guide line, and the other end is fixed on the arm head of the outer arm；Institute It states cable or soft pipeline is wound in the second pulley portion, the root of the outer arm is fixed in one end of the cable or soft pipeline Portion, the other end are fixed on the root of the inner arm.

Further, one end of the guide line is fixed on the root of the outer arm by elastomeric element；Or described draw One end of conducting wire is fixed on the arm head of the inner arm by elastomeric element.

Further, a part of the cable or soft pipeline or the guide line is provided with for tightening cable or hose The retraction spring of line or guide line.

Further, the second pulley portion or the first pulley portion are pulley or arcuate array shaft.Further, The second pulley portion or the first pulley portion include for guiding several of cable or soft pipeline or guide line in circular arc The rotatable parts of distribution.

Further, the second pulley portion and the first pulley portion are movably arranged as in an accommodating case.Into one Step ground, the second pulley portion and first pulley portion setting are on the same axis.

Further, the telescopic arm of crane includes the driving mechanism being arranged on outer arm (1) and/or inner arm, institute Driving mechanism is stated using the cable or soft pipeline (10) is powered or fuel feeding.The driving mechanism can be used for driving locking Component (such as: bolt, flashboard) movement can be used for driving with the locking for realizing telescopic arm of crane or the driving mechanism Unlocking part acts the flexible unlock to realize telescopic arm of crane.

The utility model structure is simple, compact, and the two ends of cable or soft pipeline (cable) are fixedly connected with, and can To connect root or the arm head of each section boom by way of node is added.The shape of the utility model has flat spy Point, occupies little space, mountable between boom (inner arm) and boom (outer arm) in more than ten millimeter of gap, due to gap The tight effect for the harness that limitation and elastomeric element generate, the present apparatus will not generate and significantly shake and influence the peace used Quan Xing, and the mounting means of internal cabling can be scraped disconnected danger by foreign object to avoid harness.Due to elastomeric element (retraction spring) It only needs to generate the power for keeping harness tight, tightens the length variation that power will not be extended because of boom and change, Very big pull-back forces will not be generated to cable or soft pipeline, signal wire is not necessarily to very high tensile strength, and space relative loose, line The thickness of beam, which can according to need, to be selected；And between the cables or soft pipeline at different levels of the present apparatus be to be fixedly connected, institute Shielded cable can be used as cable or soft pipeline using the present apparatus, a communication network can be formed on boom in this way, More application spaces can be extended.And the present apparatus be in boom level-one level-one (adjacent boom successively transmits) transmit letter Number, all communication network can be added as power supply and signal node in whole booms.Soft pipeline can be used for connecting oil circuit, be at different levels Boom provides hydraulic power.When by the power supply or oil circuit force of connecton layout, can with bolt mechanism or locking mechanism (such as: The locking mechanism of applicant's earlier application, referring to the patent document of Publication No. CN108116995A) it combines, it is formed novel Bolt or locking mechanism.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of embodiment 1 (inner arm is in retracted state)；

Fig. 2 is the structural schematic diagram of embodiment 1 (inner arm is in stretching state)；

Fig. 3 is the structural schematic diagram of the first variation of embodiment 1；

Fig. 4 is the structural schematic diagram of the second variation of embodiment 1；

Fig. 5 is the structural schematic diagram of embodiment 2 (inner arm is in retracted state)；

Fig. 6 is the structural schematic diagram of embodiment 2 (inner arm is in stretching state)；

Fig. 7 is the structural schematic diagram of embodiment 3；

Fig. 8 is the structural schematic diagram of embodiment 4；

Fig. 9 is the structural schematic diagram of embodiment 5；

Figure 10 is the structural schematic diagram of embodiment 6；

Figure 11 is the structural schematic diagram of embodiment 7；

Figure 12 is the structural schematic diagram of embodiment 8；

Figure 13 is the schematic diagram that the utility model is applied in the telescoping boom with bolt.

In figure: 1- outer arm, 2- inner arm, 3- second pulley portion, 4- first pulley portion, 41- first pulley support portion, 42- Two pulley support portions, 43- pulley, 44- guide rail, 5- first shell, 6- second shell, 7- accommodating case, 8- retraction spring, 9- guiding Line, 10- cable or soft pipeline, the first central axis of 11-, the second central axis of 12-, 13- arcuate array shaft, 14- third joint arm, 15- electric-controlled parts, 16- bolt, 17- boom reinforcement part, 18- boom reinforce shell, 19- connecting rod, 20- winder, 21- rotation Axis.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

Embodiment 1

Referring to Fig. 1, boom is in and is fully retracted state, i.e. inner arm 2 is retracted in inside outer arm 1, the wiring of the utility model Device includes:

Second pulley portion 3 and first pulley portion 4 between the inner arm 2 and outer arm 1 adjacent positioned at telescoping boom, described second Sheave portion 3 and the first pulley portion 4 arrange along the telescopic direction of the telescoping boom, the second pulley portion 3 relative to The first pulley portion 4 is closer to the root of the outer arm 1；

It is wound on guide line 9(in the second pulley portion 3 preferably, guide line 9 is no more than a circle around second pulley portion 3, Certainly around the function of also can be realized connecton layout more than a circle), guide line 9 can be slided around second pulley portion 3 (that is, second Sheave portion 3 rotates under the stiction effect of guide line 9 or second pulley portion 3 does not rotate, and guide line 9 is in second pulley Slided at the edge in portion 3), the root of the outer arm 1 is fixed in one end of the guide line 9, and the other end is fixed in described The root of arm 2；And it is wound on cable or soft pipeline 10 in the first pulley portion 4, cable or soft pipeline 10 can be around described First pulley portion 4 is slided, and the arm head of the outer arm 1 is fixed in one end of the cable or soft pipeline 10, and the other end is fixed on institute State the arm head of inner arm 2；

Second pulley portion 3 is arranged in first shell 5 by the first central axis 11, and first pulley portion 4 passes through the second center Axis 12 is arranged in second shell 6, and first shell 5 passes through the example of retraction spring 8(elastomeric element with second shell 6) it is connected simultaneously It is movably arranged on inside accommodating case 7.Wherein, second pulley portion 3 and guide line 9 are the examples for tightening component.

Referring to fig. 2, when inner arm is stretched out relative to outer arm.Cable or soft pipeline 10 connect one end of inner arm arm head with inner arm It stretches out together, one end that guide line 9 connects interior arm roots is moved also relative to the outer arm 1 to direction is stretched out, second pulley portion 3, first pulley portion 4 with guide line 9, cable or soft pipeline 10 movement and rotate, meanwhile, second pulley portion 3, first pulley Portion 4, first shell 5, second shell 6 and accommodating case 7 are mobile to direction is stretched out both with respect to the outer arm, due to guide line 9 With the symmetry of cable or soft pipeline 10, during inner arm stretches out, accommodating case 7 overlaps in outer arm 1 and inner arm 2 always Part.Retraction spring 8 plays the role of being to stretch out direction by the edge to first shell 5 and the generation of second shell 6 here Pulling force improves the stability of device at runtime so that guide line 9 and cable or soft pipeline 10 are in more tight state. Accommodating case 7 can limit the maximum relative distance between second pulley portion 3 and first pulley portion 4, while by 3 He of second pulley portion First pulley portion 4 is limited in the cleaning that can be improved between inner arm 2 and outer arm 1 inside accommodating case 7, provides the stabilization of operation Property.The effect of first shell 5 and second shell 6 is easy for the rotational installation in second pulley portion 3 and first pulley portion 4.

When inner arm 2 bounces back relative to outer arm 1, the manner of execution of device is opposite when stretching out with inner arm 2.

Wherein, retraction spring 8 could alternatively be other elastic elements, such as elastic rubber etc..Guide line 9 preferably uses Wirerope.Cable or soft pipeline 10 can be used for transmitting electric energy or data-signal.

Two section telescoping booms are only illustrated in Fig. 1-2, when crane has more piece (being greater than 2 sections) boom, two adjacent sections Boom (inner arm with outer arm) middle pulley folding and unfolding connecton layout is identical, the first joint arm (outer arm) arm head and the second joint arm (inner arm) Data are transmitted electricity or transmitted to arm head by cable or the connection of soft pipeline 10, and the second joint arm (outer arm) arm head and third joint arm are (interior Arm) arm head passes through cable or data, cable or hose on the second joint arm outer surface are transmitted electricity or transmitted in the connection of soft pipeline 10 Line 10(is used to connect the first joint arm and the second joint arm) on the second joint arm inner surface cable or soft pipeline 10(for connection the Two joint arms and third joint arm) connect, thereby realize the connection communication of the first joint arm and third joint arm, and so on can be real The arm head of existing first joint arm is connected with the cable of the arm head of minor details arm (inner arm) or soft pipeline.It should be understood that 9 He of guide line The position of cable or soft pipeline 10 can phase double replacement, may be implemented so the root of each joint arm by cable or soft pipeline 10 into Row connection communication, for a section boom, either arm head or root are connected with cable or soft pipeline for itself, then should Any position for saving boom can be by fixed pipeline connecting cable or hose, and biography can be installed in boom any position by reaching Sensor or other need the peripheral device of power communication or driving.

It will be understood by those skilled in the art that: first shell 5, second shell 6 and accommodating case 7 in the present embodiment Can it cancel.In Fig. 3, accommodating case 7 is eliminated, first shell 5 is connected by retraction spring 8 with second shell 6.In Fig. 4, cancel Accommodating case 7, first shell 5 and second shell 6, directly using retraction spring 8 by second pulley portion 3 and first pulley portion 4 Central axis is connected.It should be understood that retraction spring 8 can be cancelled, i.e. second pulley portion 3 and first pulley portion 4 can To be connected by a rigid element, the relative position between second pulley portion 3 and first pulley portion 4 is remained unchanged, guide line 9 The effect tightened is realized by the elasticity of itself with cable or soft pipeline 10.

Embodiment 2

The present embodiment improves the mode of tightening in above-described embodiment 1, as seen in figs. 5-6, in Fig. 5, at boom In the state that is fully retracted, Fig. 6, inner arm is in stretching state relative to outer arm, and one end of guide line 9 is solid by retraction spring 8 Due to the root of the outer arm 1.Retraction spring 8 can play tight effect to guide line 9 and cable or soft pipeline 10 in this way. In Fig. 5-6, in accommodating case 7, distance between the two keeps beginning for the setting that second pulley portion 3 and first pulley portion 4 rotate It remains unchanged eventually；However, it will be understood by those skilled in the art that: second pulley portion 3 and first pulley portion 4 still can adopt With the elastic connection way in embodiment 1.Embodiment 3

The present embodiment improves the mode of tightening in above-described embodiment 2, as shown in fig. 7, eliminating in embodiment 2 Accommodating case 7, the central axis in two second pulley portions 3 and the central axis in first pulley portion 4 are connected by the connecting rod 19 of rigidity.

Embodiment 4

The present embodiment improves the mode of tightening in above-described embodiment 1, as shown in figure 8, cable or soft pipeline 10 A part on be provided with retraction spring 8, the both ends of retraction spring 8 are each attached on cable or soft pipeline 10.Bounce back bullet in this way Spring 8 can play tight effect to guide line 9 and cable or soft pipeline 10.It should be understood that can also be set on guide line 9 Set similar retraction spring 8.

Embodiment 5

The present embodiment improves second pulley portion, the first pulley portion in above-described embodiment 1, referring to Fig. 9, second Sheave portion 3 is the arcuate array shaft 13 for guiding guide line 9, and arcuate array shaft 13 includes several in circular arc distribution Shaft；First pulley portion 4 also uses structure identical with second pulley portion 3.The rotatable parts 13 can be idler wheel, bearing or cunning Wheel etc., guide line 9 or cable or soft pipeline 10 are deviate from order to prevent, and guide line 9 or cable or soft pipeline 10 can use first Shell 5, second shell 6 are laterally guided or 3/ first pulley portion, second pulley portion, 4 edge is arranged in rotatable parts 13 In groove.When inner arm 2 is stretched out relative to outer arm 1,9/ cable of guide line or soft pipeline 10 are around several described rotatable parts The 13 circular arc center of circle slidings formed.

Embodiment 6

The present embodiment improves the position in second pulley portion, first pulley portion in above-described embodiment 2, such as Figure 10 Shown, second pulley portion 3 and first pulley portion 4, which stack, in accommodating case 7 places, and shares a rotation axis 21, second pulley portion 3 It can be set to independent rotation with first pulley portion 4, may be set to be synchronous rotary, in hoisting arm expansion, guide line 9 and electricity The motion mode of cable or soft pipeline 10 in two sheave portions is same as Example 2.In the present embodiment, receiving can not also be cancelled Box 7.

Embodiment 7

The present embodiment deforms the component of tightening in above-described embodiment 1, and as shown in figure 11, tightening component includes spiral The root of the outer arm 1 is arranged in device 20 and guide line 9, the winder 20, and one end of the guide line 9 and described first are slided (guide line can directly be connect with first pulley portion 4 can also be by components such as accommodating cases 7 indirectly and first pulley for the connection of wheel portion 4 Portion 4 connects), the other end is wound in the winder 20.Cooperate inner arm relative to the expanding-contracting action of outer arm using winder 20, Cable or soft pipeline 10 may be implemented always in tensioned state.

Embodiment 8

The present embodiment in above-described embodiment 1 tighten component and first pulley portion deforms.As shown in figure 12, One sheave portion 4 includes the first pulley support portion 41 and second pulley support portion set gradually along the retraction direction of telescoping boom 42, first pulley support portion 41 and second pulley support portion 42 be provided at least two pulleys 43, cable or soft pipeline 10 around Whole pulleys 43 is crossed, one end is fixed on the arm head of inner arm 2, and the other end is fixed on the arm head of outer arm 1；Second pulley support portion 42 can slide relative to outer arm 1, and the guide rail 44 for guiding the second pulley support portion 42 is provided on outer arm 1 or inner arm 2； Tightening component includes winder 20 and guide line 9, and the root of outer arm 1 is arranged in winder 20, and one end of guide line 9 is sliding with second It takes turns support portion 42 to connect, the other end is wound in the winder 20.Wherein, inner arm can be fixedly installed in first pulley support portion 41 Or on outer arm, it can also be arranged relative to inner arm activity.Cooperate inner arm relative to the expanding-contracting action of outer arm using winder 20, Cable or soft pipeline 10 may be implemented always in tensioned state.

Figure 13 is the schematic diagram that the utility model is applied in the telescoping boom with bolt, wherein illustrating embodiment Connecton layout in 5, telescoping boom include the first joint arm (outer arm 1), the second joint arm (inner arm 2) and third joint arm 14, and adjacent two The connecton layout being disposed between joint arm in embodiment 5.Telescopic arm of crane further includes being arranged in the first joint arm (outer arm) Driving mechanism 15, driving mechanism 15 can drive bolt 16 movement the second joint arm (inner arm) is locked or unlocked with realizing, drive Motivation structure 15 is using the cable or soft pipeline 10 is powered or fuel feeding.In Figure 10, bolt 16 and driving mechanism 15 and cloth It (is the two sides up and down of boom as shown in the figure, bolt mechanism is located at that line apparatus, which is respectively arranged in the opposite two side walls of boom, Top, connecton layout are located at downside.Substantial bolt mechanism and cable or soft pipeline 10 can be set in the same side of boom, only Otherwise interfere, bolt mechanism and cable or soft pipeline 10 can be set in any side of boom), practical application Middle adjustable installing position, bolt 16 and driving mechanism 15 and connecton layout are mountable on any side wall of boom, the two It is non-interference.Wherein, pin hole, settable boom reinforcement part around pin hole are provided in the second joint arm (inner arm) 17；16 periphery of bolt of first joint arm (outer arm) may also set up boom and reinforce shell 18, to enhance boom when latch locking Structural strength.It should be understood that the locking member of boom is not limited to bolt, it is also possible to other locking members, it is such as public The number of opening is the locking member in the patent document of CN108116995A；Driving mechanism 15 can be used for driving locking member (such as: inserting Pin, flashboard etc.) movement with the locking for realizing telescopic arm of crane or the driving mechanism can be used for driving unlocking part dynamic Make the flexible unlock to realize telescopic arm of crane；Driving mechanism 15 can be electromagnet perhaps hydraulic drive mechanism or Motor or the combination of motor and transmission parts etc..

The embodiments of the present invention are described above in conjunction with attached drawing, in the absence of conflict, this is practical new The feature in embodiment and embodiment in type can be combined with each other.The utility model is not limited to above-mentioned specific embodiment party Formula, the above mentioned embodiment is only schematical, rather than limitation, those skilled in the art are in this reality With under novel enlightenment, when not departing from the utility model aims and scope of the claimed protection, can also make very Multi-form, these are belonged within the protection scope of the utility model.

Claims (9)

1. a kind of connecton layout of telescopic arm of crane characterized by comprising

First pulley portion (4) between the adjacent inner arm of telescoping boom (2) and outer arm (1)；

The cable or soft pipeline (10) being wound on the first pulley portion (4), the cable or soft pipeline (10) can be around described The arm head of the outer arm (1) is fixed in one end of first pulley portion (4) sliding, the cable or soft pipeline (10), and the other end is solid Due to the arm head of the inner arm (2)；And

Component is tightened, the component of tightening is connected with the first pulley portion (4), for mentioning to the cable or soft pipeline (10) The tension for for tightening.

2. a kind of connecton layout of telescopic arm of crane according to claim 1, which is characterized in that the first pulley Portion (4) includes the first pulley support portion (41) and second pulley support portion set gradually along the retraction direction of telescoping boom (42), the first pulley support portion (41) and the second pulley support portion (42) are provided at least two pulleys (43), Around whole pulleys (43), the second pulley support portion (42) can be relative to described for the cable or soft pipeline (10) Outer arm (1) slides, and the guide rail for guiding the second pulley support portion (42) is provided on the outer arm (1) or inner arm (2) (44)；

The component of tightening includes winder (20) and guide line (9), root of winder (20) setting in the outer arm (1) Portion, one end of the guide line (9) are connect with the second pulley support portion (42), and the other end is wound in the winder (20)。

3. a kind of connecton layout of telescopic arm of crane according to claim 1, which is characterized in that described to tighten component Including winder (20) and guide line (9), the winder (20) is arranged in the root of the outer arm (1), the guide line (9) One end connect with the first pulley portion (4), the other end is wound in the winder (20).

4. a kind of connecton layout of telescopic arm of crane according to claim 1, which is characterized in that described to tighten component Including second pulley portion (3) and guide line (9), the relative position in the second pulley portion (3) and the first pulley portion (4) is solid The fixed constant or described second pulley portion (3) and the first pulley portion (4) pass through elastomeric element elastic connection；

The guide line (9) can be slided around the second pulley portion, and the outer arm is fixed in one end of the guide line (9) (1) root, the other end are fixed on the root of the inner arm (2)；

Alternatively, the installation site of the guide line (9) and the cable or soft pipeline (10) is exchanged: the guide line (9) is wound on On the first pulley portion (4), the arm head of the inner arm (2) is fixed in one end of the guide line (9), and the other end is fixed on institute State the arm head of outer arm (1)；The cable or soft pipeline (10) are wound on the second pulley portion (3), the cable or soft pipeline (10) root of the outer arm (1) is fixed in one end, and the other end is fixed on the root of the inner arm (2).

5. a kind of connecton layout of telescopic arm of crane according to claim 4, which is characterized in that the guide line (9) one end is fixed on the root of the outer arm (1) by elastomeric element；Or one end of the guide line (9) passes through elasticity Component is fixed on the arm head of the inner arm (2).

6. a kind of connecton layout of telescopic arm of crane according to claim 4, which is characterized in that the cable is soft A part of pipeline (10) or the guide line (9) is provided with time for tightening cable or soft pipeline (10) or guide line (9) Contracting spring (8).

7. a kind of connecton layout of telescopic arm of crane according to claim 4, which is characterized in that the second pulley Portion (3) or the first pulley portion (4) are pulley or arcuate array shaft (13).

8. a kind of connecton layout of telescopic arm of crane according to claim 4, which is characterized in that the second pulley Portion (3) and the first pulley portion (4) are movably arranged as in an accommodating case (7).

9. a kind of connecton layout of telescopic arm of crane according to claim 4-8 any one, which is characterized in that institute Stating telescopic arm of crane includes the driving mechanism being arranged on outer arm (1) and/or inner arm, and the driving mechanism uses the electricity Cable or soft pipeline (10) is powered or fuel feeding.