CN202346652U - Retractable type truss arm and engineering machine - Google Patents

Retractable type truss arm and engineering machine Download PDF

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Publication number
CN202346652U
CN202346652U CN2011205196759U CN201120519675U CN202346652U CN 202346652 U CN202346652 U CN 202346652U CN 2011205196759 U CN2011205196759 U CN 2011205196759U CN 201120519675 U CN201120519675 U CN 201120519675U CN 202346652 U CN202346652 U CN 202346652U
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CN
China
Prior art keywords
arm
chord
joint
cushion block
members
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011205196759U
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Chinese (zh)
Inventor
高一平
黎伟福
涂凌志
王锌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zoomlion Heavy Industry Science and Technology Co Ltd
Original Assignee
Zoomlion Heavy Industry Science and Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zoomlion Heavy Industry Science and Technology Co Ltd filed Critical Zoomlion Heavy Industry Science and Technology Co Ltd
Priority to CN2011205196759U priority Critical patent/CN202346652U/en
Application granted granted Critical
Publication of CN202346652U publication Critical patent/CN202346652U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a retractable type truss arm. The retractable type truss arm comprises at least two sleeved arm joints (1) and a retractable mechanism (2) for retracting the arm joints (1), wherein each arm joint (1) comprises a plurality of chord rods (3) and a plurality of web rods (4) connected with the plurality of the chord rods (3); and the cross sections of the plurality of the chord rods (3) are circular. Furthermore, the utility model further provides an engineering machine comprising the retractable type truss arm. According to the retractable type truss arm disclosed by the utility model, the length of the truss arm can be conveniently adjusted. Furthermore, circular pipes can be adopted as the chord rods; compared with a conventional square pipe, the production manufacturability of a circular pipe is good and the straightness and the torsion resistance are higher; and specifications of selective high-strength materials are diversified and the cost is lower, so that a selection range of the chord rods of the arm joints of the retractable type truss arm is expanded and the cost of the retractable type truss arm is reduced.

Description

Telescopic truss arm and construction machinery and equipment
Technical field
The utility model relates to engineering machinery field, particularly, relates to a kind of telescopic truss arm and the construction machinery and equipment that comprises this telescopic truss arm.
Background technology
Because the truss arm configuration is lighter and stressed good, so the truss arm has obtained using widely on construction machinery and equipment.At present; On some construction machinery and equipments, the truss arm need change the length of truss arm according to the real work situation, and common mode is to remove one section arm joint or increase by one section arm joint at the truss arm from the truss arm; This kind mode complex operation is unfavorable for practicing thrift manpower and time.Along with the development of truss arm, produced telescopic truss arm gradually, telescopic truss arm generally includes the arm joint and is used for the telescoping mechanism of flexible said arm joint.Because can save through stretch said arm of telescoping mechanism, thus the length of truss arm can be regulated easily, thus practiced thrift manpower and time.
The utility model content
The purpose of the utility model provides a kind of telescopic truss arm and the construction machinery and equipment that comprises this telescopic truss arm that can reduce the cost of telescopic truss arm.
To achieve these goals; The utility model provides a kind of telescopic truss arm; This telescopic truss arm comprises at least two sheathed arm joints and is used for the telescoping mechanism of flexible said arm joint; Each said arm joint includes a plurality of chord members and a plurality of web members that are connected said a plurality of chord members, and wherein, the cross-sectional plane of said a plurality of chord members is circle.
Preferably, said arm joint is for square, and said chord member is four and is positioned at four corners that said arm saves, is connected with said web member between two adjacent chord members.
Preferably, at least one web member is with respect to two the chord member arranged off-centre adjacent with this at least one web member bonded assembly.
Preferably; Said arm joint is three; Wherein two relative web members of inboard arm joint are connected with the inboard of said chord member; Wherein two relative web members of middle arm joint are connected with the middle part of said chord member; Wherein two relative web members of the arm joint in the outside are connected with the outside of said chord member, said wherein two the relative web members of the arm joint of said inboard and the arm in the said outside save said wherein both sides of two relative web members that arm that said wherein two relative web members lay respectively at said centre saves.
Preferably, after said telescopic truss arm reaches the position or is reduced to the position, pass through the bearing pin captive joint between two adjacent chord members of two adjacent arm joints.
Preferably, be provided with the guiding cushion block between two adjacent chord members of two adjacent arm joints, this guiding cushion block is captiveed joint with one of them chord member, and a side of this guiding cushion block is formed with spigot surface, the surface applying of this spigot surface and another chord member.
Preferably, the opposite side of said guiding cushion block is formed with face of joint, fits in the surface of this face of joint and said one of them chord member, and said guiding cushion block is captiveed joint with said one of them chord member through screw.
Preferably, said guiding cushion block comprises first cushion block and second cushion block, and this first cushion block and second cushion block cooperatively interact, and forms said spigot surface and said face of joint jointly, and this first cushion block is captiveed joint through screw bolt and nut with second cushion block.
Preferably; Said telescoping mechanism comprises assembly pulley and steel rope; Said assembly pulley comprises first pulley and second pulley; Said first pulley is fixed in the top of a side of the arm joint in the outside in two adjacent arm joints; Said second pulley is fixed in the bottom of arm joint inboard in two adjacent arms joints, and an end of said steel rope is fixed in the top of opposite side of the arm joint in the said outside, the other end of said steel rope twine successively said second pulley bottom and said first pulley the top and stretch out from said first pulley.
In addition, the utility model also provides a kind of construction machinery and equipment, and wherein, this project machinery comprises the telescopic truss arm that the utility model provides.
Through the telescopic truss arm that the utility model provides, the length that can regulate the truss arm easily.In addition, chord member can adopt pipe, compares with common square tube; The production technology property of pipe is good; Straightness accuracy and torsion resistance are than higher, and optional high strength material specification is many, and price is lower; Thereby increased the range of choice of chord member of the arm joint of telescopic truss arm, reduced the cost of telescopic truss arm.
Other feature and advantage of the utility model will partly specify in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is the further understanding that is used to provide the utility model, and constitutes the part of specification sheets, is used to explain the utility model with the following specific embodiment, but does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the telescopic truss arm that provides of the utility model;
Fig. 2 is the layout of the telescoping mechanism of the telescopic truss arm that provides of the utility model;
Fig. 3 is the scheme drawing of fixing through bearing pin after putting in place when telescopic truss arm that the utility model provides is flexible;
Fig. 4 is the structural representation that is provided with the telescopic truss arm that provides of the utility model of guiding cushion block;
Fig. 5 is the local enlarged diagram of Fig. 4.
Description of reference numerals
1: the arm joint; 2: telescoping mechanism; 3: chord member; 4: web member; 5: bearing pin; 6: the guiding cushion block; 7: spigot surface; 8: the first cushion blocks; 9: the second cushion blocks; 10: nut; 11: the first pulleys; 12: the second pulleys; 13: steel rope; 14: bolt; 15: screw; 16: face of joint.
The specific embodiment
Be elaborated below in conjunction with the specific embodiment of accompanying drawing to the utility model.Should be understood that the specific embodiment described herein only is used for explanation and explains the utility model, is not limited to the utility model.
In the utility model, under the situation of not doing opposite explanation, the noun of locality of use is that the mode of operation of the telescopic truss arm that provides at the utility model is undefined like " end, go up, top ".
As depicted in figs. 1 and 2; The utility model provides a kind of telescopic truss arm; This telescopic truss arm comprises at least two sheathed arm joints 1 and is used for the telescoping mechanism 2 of flexible said arm joint 1; Each said arm joint 1 includes a plurality of chord members 3 and a plurality of web members 4 that are connected said a plurality of chord member 3, and wherein, the cross-sectional plane of said a plurality of chord members 3 is circle.
Through the telescopic truss arm that the utility model provides, the length that can regulate the truss arm easily.In addition, chord member 3 can adopt pipe, compares with common square tube; The production technology property of pipe is good; Straightness accuracy and torsion resistance are than higher, and optional high strength material specification is many, and price is lower; Thereby increased the range of choice of chord member of the arm joint of telescopic truss arm, reduced the cost of telescopic truss arm.
Said arm joint 1 can be various suitable shapes, and for example, said arm joint 1 can be for square, and said chord member 3 is four and is positioned at four corners of said arm joint 1, is connected with said web member 4 between two adjacent chord members 3.Chord member 3 can be connected with web member 4 through various suitable modes, and for example welding perhaps is fastenedly connected.
Web member 4 can be connected with the suitable position of chord member 3; For example web member 4 can be connected with inboard, middle part or the outside of chord member 3; For the gap between the web member 4 that increases inside and outside arm joint 1; Arrange electric hydraulic control system and telescoping mechanism easily, preferably, at least one web member 4 is with respect to two chord member 3 arranged off-centre adjacent with these at least one web member 4 bonded assemblys.
The number of said arm joint 1 can be selected according to concrete needs, and for example, said arm joint 1 can be three.As shown in Figure 1; When said arm joint 1 is three; For the gap between the web member 4 that increases inside and outside arm joint 1; Arrange electric hydraulic control system and telescoping mechanism easily; Preferably, wherein two relative web members 4 of inboard arm joint 1 are connected with the inboard of said chord member 3, and wherein two relative web members 4 of middle arm joint 1 are connected with the middle part of said chord member 3; Wherein two relative web members 4 of the arm joint 1 in the outside are connected with the outside of said chord member 3, and said wherein two the relative web members 4 of the arm joint 1 of said inboard and the arm in the said outside save the arm that said wherein two relative web members 4 of 1 lay respectively at said centre and save 1 the said wherein both sides of two relative web members 4.The web member 4 of other of arm joint 1 can suitably arrange, to be connected to suitable near the middle part of chord member 3 as far as possible.
When said telescopic truss arm is flexible put in place after, can pass through various suitable parts captive joints between two adjacent chord members 3 of two adjacent arms joints 1.As shown in Figure 3, connect for ease, preferably, after said telescopic truss arm reaches the position or is reduced to the position, pass through bearing pin 5 captive joints between two adjacent chord members 3 of two adjacent arm joints 1.
Like Fig. 4 and shown in Figure 5; A kind of preferred implementation according to the utility model; Be provided with guiding cushion block 6 between two adjacent chord members 3 of two adjacent arm joints 1; This guiding cushion block 6 is captiveed joint with one of them chord member 3, and a side of this guiding cushion block 6 is formed with spigot surface 7, the surface applying of this spigot surface 7 and another chord member 3.Like this, can avoid arm joint 1 in telescopic process run-off the straight with rock, arm is saved 1 plays directional tagging; In addition; After arm joint 1 was accomplished flexible and fixed, when telescopic boom was worked, guiding cushion block 6 can also be eliminated the gap between two adjacent arm joints 1; The application force of 1 at arm joint is transmitted through guiding cushion block 6, thereby improve the local pressure situation of arm joint 1 greatly.In embodiment shown in Figure 5; Guiding cushion block 6 is captiveed joint with the chord member 3 in the outside; Spigot surface 7 is fitted with the surface of the chord member 3 of inboard; Thereby when the arm joint 1 of inboard carried out fore and aft motion, the spigot surface 7 of guiding cushion block 6 can play guiding function to chord member 3, prevented that arm from saving 1 inclination and perhaps rocking.The shape and size of the shape and size of said spigot surface 7 and another chord member 3 are mated each other, so that chord member 3 is played guiding function.
The fixing of cushion block 6 that lead for ease, preferably, the opposite side of said guiding cushion block 6 is formed with face of joint 16, and this face of joint 16 is fitted with the surface of said one of them chord member 3, and said guiding cushion block 6 is captiveed joint with said one of them chord member 3 through screw 15.The shape and size of the shape and size of face of joint 16 and one of them chord member 3 are mated each other.
Regulate the gap between guiding cushion block 6 and adjacent two chord members 3 for ease; Make spigot surface 7 and face of joint 16 and chord member 3 fit better; Preferably, said guiding cushion block 6 comprises first cushion block 8 and second cushion block 9, and this first cushion block 8 and second cushion block 9 cooperatively interact; Common said spigot surface 7 and the said face of joint 16 of forming, this first cushion block 8 is captiveed joint with nut 10 through bolt 14 with second cushion block 9.As shown in Figure 5, can go into length through the bolt of regulating bolt 14 and regulate the gap between first cushion block 8 and second cushion block 9 and adjacent two chord members 3.
Guiding cushion block 6 can be arranged between any two adjacent chord members 3 as required, and the quantity of the guiding cushion block 6 that between any two adjacent chord members 3, is provided with is selected as required.
Said telescoping mechanism 2 can be taked various suitable forms; As shown in Figure 2; A kind of preferred implementation according to the utility model; Said telescoping mechanism 2 comprises assembly pulley and steel rope 13; Said assembly pulley comprises first pulley 11 and second pulley 12, and said first pulley 11 is fixed in the top of a side of the arm joint 1 in the outside in two adjacent arm joints 1, and said second pulley 12 is fixed in the bottom of arm joint 1 inboard in two adjacent arm joints 1; One end of said steel rope 13 is fixed in the top of opposite side of the arm joint 1 in the said outside, the other end of said steel rope 13 twine successively said second pulley 12 bottom and said first pulley 11 the top and stretch out from said first pulley 11.Like this, each joint arm flexible can by one independently elevator control, reliability is high, safety is good.
Second pulley 12 can be two, and these two second pulleys 12 can be arranged in the both sides of the bottom of arm joint 1 inboard in two adjacent arm joints 1.
The quantity of telescoping mechanism 2 can save 1 quantity according to arm and select, and is as shown in Figure 2, is provided with two groups of telescoping mechanisms 2.
First pulley 11 and second pulley 12 can be fixed through various suitable modes, for example fix through support.Steel rope 13 can be fixed through various suitable modes, for example fixes through support.
In addition, the utility model also provides a kind of construction machinery and equipment, and wherein, this project machinery comprises the telescopic truss arm that the utility model provides.
The telescopic truss arm that the utility model specific embodiment provides has following advantage:
1) the telescopic truss arm that provides through the utility model can be regulated the length of truss arm easily, thereby practice thrift manpower and time;
2) chord member 3 can adopt pipe; Compare with common square tube, the production technology property of pipe is good, and straightness accuracy and torsion resistance are than higher; Optional high strength material specification is many; And price is lower, thereby has increased the range of choice of chord member of the arm joint of telescopic truss arm, has reduced the cost of telescopic truss arm;
3) when said telescopic truss arm is flexible put in place after, between two adjacent chord members 3 of two adjacent arms joints 1 through bearing pin 5 captive joints, thereby the position of fixed arm joint 1 easily;
4) through the setting of guiding cushion block 6, can avoid arm joint 1 in telescopic process run-off the straight with rock, arm is saved 1 plays directional tagging; In addition; After arm joint 1 was accomplished flexible and fixed, when telescopic boom was worked, guiding cushion block 6 can also be eliminated the gap between two adjacent arm joints 1; The application force of 1 at arm joint is transmitted through guiding cushion block 6, thereby improve the local pressure situation of arm joint 1 greatly;
5) each joint arm flexible can by one independently elevator control, reliability is high, safety is good.
More than combine accompanying drawing to describe the preferred implementation of the utility model in detail; But; The utility model is not limited to the detail in the above-mentioned embodiment; In the technical conceive scope of the utility model, can carry out multiple simple variant to the technical scheme of the utility model, these simple variant all belong to the protection domain of the utility model.
Need to prove that in addition each the concrete technical characterictic described in the above-mentioned specific embodiment under reconcilable situation, can make up through any suitable manner.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible array modes.
In addition, also can carry out combination in any between the various embodiment of the utility model, as long as its thought without prejudice to the utility model, it should be regarded as content disclosed in the utility model equally.

Claims (10)

1. telescopic truss arm; This telescopic truss arm comprises sheathed at least two arm joints (1) and is used for the telescoping mechanism (2) of flexible said arm joint (1); Each said arm joint (1) includes a plurality of chord members (3) and a plurality of web members (4) that are connected said a plurality of chord member (3); It is characterized in that the cross-sectional plane of said a plurality of chord members (3) is circle.
2. telescopic truss arm according to claim 1 is characterized in that, said arm joint (1) is square, and said chord member (3) is four and is positioned at four corners that said arm saves (1), is connected with said web member (4) between adjacent two chord members (3).
3. telescopic truss arm according to claim 2 is characterized in that, at least one web member (4) is with respect to two chord members (3) arranged off-centre adjacent with this at least one web member (4) bonded assembly.
4. telescopic truss arm according to claim 3; It is characterized in that; Said arm joint (1) is three; Wherein two relative web members (4) of inboard arm joint (1) are connected with the inboard of said chord member (3); Wherein two relative web members (4) of middle arm joint (1) are connected with the middle part of said chord member (3), and wherein two relative web members (4) of the arm joint (1) in the outside are connected with the outside of said chord member (3), and said wherein two relative web members (4) of said wherein two the relative web members (4) of the arm joint (1) of said inboard and the arm joint (1) in the said outside lay respectively at the said wherein both sides of two relative web members (4) of the arm joint (1) of said centre.
5. according to any described telescopic truss arm in the claim 1 to 4, it is characterized in that, after said telescopic truss arm reaches the position or is reduced to the position, pass through bearing pin (5) captive joint between adjacent two chord members (3) of adjacent two arm joints (1).
6. according to any described telescopic truss arm in the claim 1 to 4; It is characterized in that; Be provided with guiding cushion block (6) between adjacent two chord members (3) of adjacent two arm joints (1); This guiding cushion block (6) is captiveed joint with one of them chord member (3), and a side of this guiding cushion block (6) is formed with spigot surface (7), the surface applying of this spigot surface (7) and another chord member (3).
7. telescopic truss arm according to claim 6; It is characterized in that; The opposite side of said guiding cushion block (6) is formed with face of joint (16); This face of joint (16) is fitted with the surface of said one of them chord member (3), and said guiding cushion block (6) is captiveed joint with said one of them chord member (3) through screw (15).
8. telescopic truss arm according to claim 7; It is characterized in that; Said guiding cushion block (6) comprises first cushion block (8) and second cushion block (9); This first cushion block (8) and second cushion block (9) cooperatively interact, and form said spigot surface (7) and said face of joint (16) jointly, and this first cushion block (8) is captiveed joint with nut (10) through bolt (14) with second cushion block (9).
9. according to any described telescopic truss arm in the claim 1 to 4; It is characterized in that; Said telescoping mechanism (2) comprises assembly pulley and steel rope (13); Said assembly pulley comprises first pulley (11) and second pulley (12); Said first pulley (11) is fixed in the top of a side of the arm joint (1) in the outside in two adjacent arm joints (1); Said second pulley (12) is fixed in the bottom of arms joints (1) inboard in two adjacent arms joints (1), and an end of said steel rope (13) is fixed in the top of opposite side of the arm joint (1) in the said outside, the other end of said steel rope (13) twine successively said second pulley (12) bottom and said first pulley (11) the top and stretch out from said first pulley (11).
10. a construction machinery and equipment is characterized in that, this project machinery comprises according to any described telescopic truss arm in the claim 1 to 9.
CN2011205196759U 2011-12-13 2011-12-13 Retractable type truss arm and engineering machine Expired - Fee Related CN202346652U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011205196759U CN202346652U (en) 2011-12-13 2011-12-13 Retractable type truss arm and engineering machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011205196759U CN202346652U (en) 2011-12-13 2011-12-13 Retractable type truss arm and engineering machine

Publications (1)

Publication Number Publication Date
CN202346652U true CN202346652U (en) 2012-07-25

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Application Number Title Priority Date Filing Date
CN2011205196759U Expired - Fee Related CN202346652U (en) 2011-12-13 2011-12-13 Retractable type truss arm and engineering machine

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102502429A (en) * 2011-12-13 2012-06-20 中联重科股份有限公司 Telescopic truss arm and engineering machinery
CN104098036A (en) * 2013-04-11 2014-10-15 埃英根利勃海尔-维克股份有限公司 Telescopic boom and crane

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102502429A (en) * 2011-12-13 2012-06-20 中联重科股份有限公司 Telescopic truss arm and engineering machinery
CN104098036A (en) * 2013-04-11 2014-10-15 埃英根利勃海尔-维克股份有限公司 Telescopic boom and crane
CN104098036B (en) * 2013-04-11 2019-01-18 埃英根利勃海尔-维克股份有限公司 Telescopic jib and crane

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
EE01 Entry into force of recordation of patent licensing contract

Assignee: Hunan ZOOMLION Crawler Crane Co., Ltd.

Assignor: Zoomlion Heavy Industry Science & Technology Development Co., Ltd.

Contract record no.: 2013990000373

Denomination of utility model: Telescopic truss arm and engineering machinery

Granted publication date: 20120725

License type: Exclusive License

Record date: 20130703

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120725

Termination date: 20161213

CF01 Termination of patent right due to non-payment of annual fee