CN102502429A - Telescopic truss arm and engineering machinery - Google Patents

Telescopic truss arm and engineering machinery Download PDF

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Publication number
CN102502429A
CN102502429A CN2011104158006A CN201110415800A CN102502429A CN 102502429 A CN102502429 A CN 102502429A CN 2011104158006 A CN2011104158006 A CN 2011104158006A CN 201110415800 A CN201110415800 A CN 201110415800A CN 102502429 A CN102502429 A CN 102502429A
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CN
China
Prior art keywords
arm
chord
joint
cushion block
telescopic truss
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Granted
Application number
CN2011104158006A
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Chinese (zh)
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CN102502429B (en
Inventor
詹纯新
刘权
高一平
黎伟福
涂凌志
王锌
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Priority to CN201110415800.6A priority Critical patent/CN102502429B/en
Publication of CN102502429A publication Critical patent/CN102502429A/en
Application granted granted Critical
Publication of CN102502429B publication Critical patent/CN102502429B/en
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Abstract

The invention provides a telescopic truss arm, which comprises at least two arm sections (1) in nested arrangement, and a extending/retracting mechanism (2) for extending/retracting the arm sections (1), wherein each arm section (1) includes a plurality of chord members (3) each having a round cross section, and a plurality of web members (4) connecting the chord members (3). The invention also provides engineering machinery including the telescopic truss arm mentioned above. With the inventive telescopic truss arm, the length of the truss arm can be conveniently adjusted. In addition, the chord member can adopt a round tube with good processibility, high linearity and torsion, various specifications of selectable high-strength materials, and low cost, compared with a conventional square tube, to consequently increase the chord member selection range of the arm section and lower the cost of the telescopic truss arm.

Description

Telescopic truss arm and construction machinery and equipment
Technical field
The present invention relates to engineering machinery field, particularly, relate 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.
Summary of the invention
The purpose of this invention is to provide 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 invention 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 present invention also provides a kind of construction machinery and equipment, and wherein, this project machinery comprises telescopic truss arm provided by the present invention.
Through telescopic truss arm provided by the invention, 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 features and advantages of the present invention will partly specify in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present invention, and constitutes the part of specification sheets, is used to explain the present invention with the following specific embodiment, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural representation of telescopic truss arm provided by the invention;
Fig. 2 is the layout of the telescoping mechanism of telescopic truss arm provided by the invention;
Fig. 3 is the scheme drawing of fixing through bearing pin after putting in place when telescopic truss arm provided by the invention is flexible;
Fig. 4 is the structural representation that is provided with the provided by the invention telescopic truss arm 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 accompanying drawing specific embodiments of the invention.Should be understood that the specific embodiment described herein only is used for explanation and explains the present invention, is not limited to the present invention.
In the present invention, under the situation of not doing opposite explanation, the noun of locality of use is undefined at the mode of operation of telescopic truss arm provided by the invention like " end, go up, top ".
As depicted in figs. 1 and 2; The invention 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 telescopic truss arm provided by the invention, 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 preferred embodiment of the invention; 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 preferred embodiment of the invention; 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 present invention also provides a kind of construction machinery and equipment, and wherein, this project machinery comprises telescopic truss arm provided by the present invention.
The telescopic truss arm that the specific embodiment of the invention provides has following advantage:
1) through telescopic truss arm provided by the invention, can regulate the length of truss arm easily, thereby practice thrift manpower and time;
2) chord member 3 can adopt pipe, compares with common square tube, and the production technology property of pipe is good, and straightness accuracy and torsion resistance are than higher, and optional high strength material specification is many, and price is lower,
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 preferred implementation of the present invention in detail; But; The present invention is not limited to the detail in the above-mentioned embodiment; In technical conceive scope of the present invention, can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
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 present invention 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 present invention, as long as it is without prejudice to thought of the present invention, it should be regarded as the disclosed content of the present invention 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.
CN201110415800.6A 2011-12-13 2011-12-13 Telescopic truss arm and engineering machinery Active CN102502429B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102923586A (en) * 2012-11-13 2013-02-13 郑州新大方重工科技有限公司 Telescopic truss structure connected by web members and plug pins

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465899A (en) * 1967-08-03 1969-09-09 Bucyrus Erie Co Telescoping boom for hydraulic crane
US4166542A (en) * 1977-12-05 1979-09-04 Bryan John F Jr Telescoping lattice boom crane
CN2351417Y (en) * 1999-01-12 1999-12-01 费海燕 Crane multi-section telescopic cantilever crane
EP1555237A2 (en) * 2004-01-16 2005-07-20 MANITOU COSTRUZIONI INDUSTRIALI S.r.l. A telescopic arm for a lift truck
CN201272660Y (en) * 2008-07-10 2009-07-15 彭洪 Tower frame of floor suspension-paving machine
CN201882818U (en) * 2010-12-11 2011-06-29 郑州新大方重工科技有限公司 Crane with telescopic tower body
CN202346652U (en) * 2011-12-13 2012-07-25 中联重科股份有限公司 Retractable type truss arm and engineering machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465899A (en) * 1967-08-03 1969-09-09 Bucyrus Erie Co Telescoping boom for hydraulic crane
US4166542A (en) * 1977-12-05 1979-09-04 Bryan John F Jr Telescoping lattice boom crane
CN2351417Y (en) * 1999-01-12 1999-12-01 费海燕 Crane multi-section telescopic cantilever crane
EP1555237A2 (en) * 2004-01-16 2005-07-20 MANITOU COSTRUZIONI INDUSTRIALI S.r.l. A telescopic arm for a lift truck
CN201272660Y (en) * 2008-07-10 2009-07-15 彭洪 Tower frame of floor suspension-paving machine
CN201882818U (en) * 2010-12-11 2011-06-29 郑州新大方重工科技有限公司 Crane with telescopic tower body
CN202346652U (en) * 2011-12-13 2012-07-25 中联重科股份有限公司 Retractable type truss arm and engineering machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102923586A (en) * 2012-11-13 2013-02-13 郑州新大方重工科技有限公司 Telescopic truss structure connected by web members and plug pins

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