CN102398864A - Telescopic mechanism, engineering machinery and fire-fighting machinery - Google Patents
Telescopic mechanism, engineering machinery and fire-fighting machinery Download PDFInfo
- Publication number
- CN102398864A CN102398864A CN2011101945828A CN201110194582A CN102398864A CN 102398864 A CN102398864 A CN 102398864A CN 2011101945828 A CN2011101945828 A CN 2011101945828A CN 201110194582 A CN201110194582 A CN 201110194582A CN 102398864 A CN102398864 A CN 102398864A
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- China
- Prior art keywords
- slide block
- baffle plate
- telescoping mechanism
- barrel
- limiting section
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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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/707—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic guiding devices for telescopic jibs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention provides a telescopic mechanism, engineering machinery and fire-fighting machinery. The telescopic mechanism comprises at least two barrels and a slide block assembly, wherein the barrels are embedded mutually; two adjacent barrels refer to a first barrel part and a second barrel part respectively; the second barrel part is positioned inside the first barrel part; the slide block assembly is arranged between the first barrel part and the second barrel part, and comprises a slide block which is arranged between the first barrel part and the second barrel part of the telescopic mechanism, and a slide block baffle plate which is arranged on the first barrel part and is positioned on the side face of the slide block along the longitudinal direction of the telescopic mechanism; the slide block baffle plate is provided with a limiting part; the limiting part faces the slide block; the slide block is provided with a limited part matched with the shape of the limiting part; the limited part faces the slide block baffle plate; and the limiting part and the limited part form a buckling structure for buckling and fixing the slide block on the first barrel part. Due to the adoption of the telescopic mechanism, the problem that the slide block becomes loose and falls easily in the prior art is effectively solved.
Description
Technical field
The present invention relates to mechanical field, in particular to a kind of telescoping mechanism, construction machinery and equipment and fire-fighting machinery.
Background technology
Telescoping mechanism is widely used in the telescopic jib and the telescopic outrigger of construction machinery and equipment, also is applied to the flexible aerial ladder of fire-fighting machinery, and wherein construction machinery and equipment comprises hoisting crane and concrete pump truck, and fire-fighting machinery comprises fire fighting turnable ladder.In the existing telescoping mechanism, retracting cylinder body (n joint retracting cylinder body) always slides in basic barrel (n-1 joint retracting cylinder body), and slide block assembly is installed between basic barrel and the retracting cylinder body to improve the reliability of telescoping mechanism operation.
But, when the retracting cylinder body slides, can produce friction to slide block in basic barrel, therefore slide block is worn.In addition, telescoping mechanism in use produces and rocks, and is prone to cause slide block loosening.Above-mentioned wearing and tearing and loosening slide block is dropped out, thus it is stuck to cause telescoping mechanism to occur, and can't stretch normally, even can cause the local deformation of telescoping mechanism.
Summary of the invention
The present invention aims to provide a kind of telescoping mechanism, construction machinery and equipment and fire-fighting machinery, to solve the problem that slide block becomes flexible easily, drops in the prior art.
To achieve these goals, according to an aspect of the present invention, a kind of telescoping mechanism is provided; Comprise: the mutually nested cylindrical shell of at least two joints, two adjacent joint cylindrical shells are respectively first barrel and second barrel, and second barrel is positioned at the inside of first barrel; Telescoping mechanism also comprises: slide block assembly; Slide block assembly is installed between first barrel and second barrel, and slide block assembly comprises: slide block is installed between first barrel and second barrel of telescoping mechanism; The slide block baffle plate is installed on first barrel, and be positioned at slide block along barrel frame telescoping mechanism side longitudinally, the slide block baffle plate has limiting section, limiting section is towards slide block; Slide block has the limited portion suitable with the limiting section shape, and limited towards the slide block baffle plate; Wherein limiting section and limited form fastening structure, so that slide block is fastened on first barrel.
Further; The slide block baffle plate is two; The slide block baffle plate comprises: the first slide block baffle plate and the second slide block baffle plate; The first slide block baffle plate and the second slide block baffle plate lay respectively at slide block along telescoping mechanism both sides longitudinally, the first slide block baffle plate and the second slide block baffle plate are fastened slide block on first barrel jointly.
Further; Limiting section comprises and is positioned at first limiting section on the first slide block baffle plate and is positioned at second limiting section on the second slide block baffle plate; Limited of slide block comprises first limited and the second limited portion; First limited forms fastening structure towards first limiting section and with first limiting section, and second limited forms fastening structure towards second limiting section and with second limiting section.
Further, first limiting section is the first baffle plate inclined-plane, and second limiting section is the second baffle inclined-plane, and the first baffle plate inclined-plane and second baffle inclined-plane are oppositely arranged, and limits between the first baffle plate inclined-plane and second baffle inclined-plane and first barrel to form oat tail groove structure.
Further, the angle of inclination on the angle of inclination on the first baffle plate inclined-plane and second baffle inclined-plane equates.
Further, the first slide block baffle plate is installed on the side surface of first barrel; The second slide block baffle plate is installed on the end surfaces of first barrel.
Further, the second slide block baffle plate is removably mounted on the end surfaces of first barrel along the direction towards telescoping mechanism.
Further, first limiting section is the first baffle plate step, and second limiting section is the second baffle step; Wherein, form the first baffle plate step and second baffle step respectively on the opposite face of the first slide block baffle plate and the second slide block baffle plate; Limit between the first baffle plate step and second baffle step and first barrel and form the T slot structure.
Further, the side towards second barrel of slide block is provided with oil groove, is provided with lubricant in the oil groove.
Further, telescoping mechanism is a telescopic jib.
Further, telescopic jib is box telescopic jib or U-shaped telescopic jib.
Further, telescoping mechanism is a telescopic outrigger.
According to a further aspect in the invention, a kind of construction machinery and equipment is provided, has comprised telescoping mechanism, telescoping mechanism is above-mentioned telescoping mechanism.
Further, construction machinery and equipment is hoisting crane or concrete pump truck.
According to a further aspect in the invention, a kind of fire-fighting machinery is provided, has comprised flexible aerial ladder, telescoping mechanism is above-mentioned telescoping mechanism.
Use technical scheme of the present invention, the slide block assembly in the telescoping mechanism comprises: slide block and slide block baffle plate.Wherein, the slide block baffle plate has limiting section, and this limiting section is towards slide block; Simultaneously, slide block has the limited portion suitable with the limiting section shape, and this limited towards the slide block baffle plate; Limiting section and limited formation fastening structure are to be fastened slide block on first barrel.Like this, limiting section has barrier effect to limited on perpendicular to the direction of telescoping mechanism longitudinal axis, and promptly the slide block baffle plate can stop slide block, like this, has effectively prevented the loosening of slide block and drops.
Description of drawings
The Figure of description that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 show according to the slide block assembly of telescoping mechanism of the present invention the scheme of installation of embodiment;
The master that Fig. 2 shows the slide block of the slide block assembly among Fig. 1 looks scheme drawing;
Fig. 3 shows the schematic top plan view of the slide block among Fig. 2;
The master that Fig. 4 shows the first slide block baffle plate of the slide block assembly among Fig. 1 looks scheme drawing;
Fig. 5 shows the cross-sectional schematic of the first slide block baffle plate among Fig. 4;
The master that Fig. 6 shows the second slide block baffle plate of the slide block assembly among Fig. 1 looks scheme drawing; And
Fig. 7 shows the A-A of the second slide block baffle plate among Fig. 6 to cross-sectional schematic.
The specific embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
Fig. 1 show according to the slide block assembly of telescoping mechanism of the present invention the scheme of installation of embodiment, as can be seen from the figure, the telescoping mechanism of this enforcement comprises: the mutually nested cylindrical shell of at least two joints; This cylindrical shell is a hollow structure; Adjacent two joint cylindrical shells are respectively the inside that first barrel 1 and second barrel, 3, the second barrel 3 are positioned at first barrel 1, and first barrel 1 is looped around outside second barrel 3; Has predetermined gap between first barrel 1 and second barrel 3; Be provided with slide block assembly at this predetermined gap place,, prevent that deflection from causing stress raisers to guarantee second barrel 3 their moved in coaxial when flexible in first barrel 1.
The slide block assembly of present embodiment comprises: slide block 10, the first slide block baffle plate 31 and the second slide block block 33.Wherein, Slide block 10 is installed between first barrel 1 and second barrel 3 of telescoping mechanism; The first slide block baffle plate 31 is installed on the side surface of first barrel 1; The second slide block baffle plate 33 is installed on the end surfaces of first barrel 1, and, the first slide block baffle plate 31 and the second slide block baffle plate 33 lay respectively at slide block 10 along telescoping mechanism both sides longitudinally.
In the present embodiment, slide block baffle plate 31 has first limiting section, and this first limiting section has second limiting section towards slide block 10, the second slide block baffle plates 33, and this second limiting section is towards slide block 10.In conjunction with referring to Fig. 2 to Fig. 3; Slide block 10 has the first limited portion suitable with the first limiting section shape; This first limited slide block 10 has the second limited portion suitable with the second limiting section shape towards first limiting section, and this second limited towards second limiting section.Simultaneously; First limited side that is positioned at second barrel, 3 places at least in part on the relative slide block 10 of first limiting section; Second limited side that is positioned at second barrel, 3 places at least in part on the relative slide block 10 of second limiting section; Like this, first limiting section and second limiting section can have barrier effect to first limited and second limited on perpendicular to the direction of telescoping mechanism longitudinal axis, promptly form fastening structure between the first slide block baffle plate 31 and the second slide block baffle plate 33 slide block 10 is fastened on first barrel 1; First limited forms fastening structure towards first limiting section and with first limiting section; Second limited forms fastening structure towards second limiting section and with second limiting section, and then can effectively stop slide block 10, anti-limited slip block loosening and dropping.The slide block assembly of present embodiment is specifically decided according to cylindrical shell flanging number generally along circumferential arrangement.
Certainly, it is two that the present invention is not limited to the slide block baffle plate, and the slide block baffle plate also can be one, and at this moment, the opposite side of slide block 10 can be provided with screw or other position limiting structures, in the present embodiment, for the ease of explanation, is that example is introduced with two slide block baffle plates only.
First limiting section in the foregoing description and the structure of second limiting section can be for multiple.Wherein a kind of preferred embodiment in, in conjunction with referring to Fig. 4 to Fig. 7, first limiting section is that the first baffle plate inclined-plane, 311, the second limiting sections are second baffle inclined-plane 331; Wherein, form the first baffle plate inclined-plane 311 and second baffle inclined-plane 331 on the opposite face of the first slide block baffle plate 31 and the second slide block baffle plate 33 respectively; Limit between the first baffle plate inclined-plane 311 and second baffle inclined-plane 331 and first barrel 1 and form oat tail groove structure.Above-mentioned first limiting section and second limiting section simple in structure, specifically, in conjunction with referring to Fig. 4 to Fig. 7; Be processed into the inclined-plane at α angle at slide block baffle plate 31 towards a side of slide block 10, be processed into the inclined-plane at β angle at the second slide block baffle plate 33 towards a side of slide block 10, simultaneously; Shown in Fig. 6 to 7, need also process the inclined-plane of 1 jiao of inclined-plane and the β of 1 jiao of α in the both sides of the slide block 10 corresponding slide block baffle plates 31 and the second slide block baffle plate 33, and; Need satisfy α=α 1, β=β 1.Like this; Utilize between the first baffle plate inclined-plane 311 and second baffle inclined-plane 331 and first barrel 1 limit form oat tail groove structure can slide block 10 is therein spacing; The first baffle plate inclined-plane 311 contacts with two inclined-planes of slide block 10 respectively with second baffle inclined-plane 331, thereby stops that effectively the loosening of slide block 10 drops.
Perhaps, in another preferred embodiment (not shown), first limiting section is the first baffle plate step, and second limiting section is the second baffle step; Form the first baffle plate step and second baffle step on the opposite face of the first slide block baffle plate 31 and the second slide block baffle plate 33 respectively; Limit between the first baffle plate step and second baffle step and first barrel 1 and form the T slot structure.Slide block 10 also is processed into T shape structure; Like this; Utilize between the first baffle plate step and second baffle step and first barrel 1 limit form the T slot structure can slide block 10 is therein spacing; The first baffle plate step and second baffle step block T shape slide block, thereby stop that effectively the loosening of slide block 10 drops.
Preferably, the inclination angle beta on the tilt angle alpha on the first baffle plate inclined-plane 311 and second baffle inclined-plane 331 equates.Like this, process more conveniently, cost is lower.
Preferably, the second slide block baffle plate 33 is removably mounted on the end surfaces of first barrel 1 along the direction towards telescoping mechanism.Like Fig. 1, Fig. 6 and shown in Figure 7, in the present embodiment, the second slide block baffle plate 33 utilizes screw retention on the reinforced plate of first barrel 1.
Preferably, the material of slide block 10 is a MC nylon, compare common nylon and have better rigidity and mechanical property, and also wear-resisting.Simultaneously, the side towards second barrel 3 of slide block 10 is provided with oil groove 11, is provided with lubricant in the oil groove 11, is generally grease, and its lubricity is good, helps to reduce friction.
Preferably, telescoping mechanism is a telescopic jib, is preferably box telescopic jib or U-shaped telescopic jib, and this telescopic jib can stop effectively that the in-to-in slide block drops, and it is more stable to work.It should be noted that when telescoping mechanism is the U-shaped telescopic jib, when design, should be noted that: slide block 10 needs with the structure of first barrel 1 and second barrel 3 suitable respectively with the surface that first barrel 1 contacts with second barrel 3.
Preferably, telescoping mechanism is a telescopic outrigger.This telescopic outrigger can stop effectively that the in-to-in slide block drops, and it is more stable to work.
The present invention also provides a kind of construction machinery and equipment, comprises telescoping mechanism, and telescoping mechanism is above-mentioned telescoping mechanism.Other each several part structures of this project machinery repeat no more at this please with reference to prior art.Preferably, this project machinery is hoisting crane or concrete pump truck.
The present invention also provides a kind of fire-fighting machinery, comprises telescoping mechanism, and telescoping mechanism is above-mentioned telescoping mechanism.Other each several part structures of this fire-fighting machinery repeat no more at this please with reference to prior art.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. telescoping mechanism comprises:
The mutually nested cylindrical shell of at least two joints, the adjacent said cylindrical shell of two joints is respectively first barrel (1) and second barrel (3), and said second barrel (3) is positioned at the inside of said first barrel (1), and said telescoping mechanism also comprises:
Slide block assembly, said slide block assembly are installed between said first barrel (1) and said second barrel (3), and said slide block assembly comprises:
Slide block (10) is arranged between said first barrel (1) and second barrel (3);
The slide block baffle plate is installed on said first barrel (1), and the said telescoping mechanism in edge that is positioned at said slide block (10) side longitudinally,
It is characterized in that,
Said slide block baffle plate has limiting section, and said limiting section is towards said slide block (10);
Said slide block (10) has and the suitable limited portion of said limiting section shape, said limited towards said slide block baffle plate;
Wherein, said limiting section and said limited formation fastening structure are to be fastened said slide block (10) on said first barrel (1).
2. telescoping mechanism according to claim 1; It is characterized in that; Said slide block baffle plate is two; Said slide block baffle plate comprises: the said telescoping mechanism in edge that the first slide block baffle plate (31) and the second slide block baffle plate (33), the said first slide block baffle plate (31) and the second slide block baffle plate (33) lay respectively at said slide block (10) is both sides longitudinally, and the said first slide block baffle plate (31) and the second slide block baffle plate (33) are fastened said slide block (10) on said first barrel (1) jointly.
3. telescoping mechanism according to claim 2; It is characterized in that; Said limiting section comprises and is positioned at first limiting section on the said first slide block baffle plate (31) and is positioned at second limiting section on the said second slide block baffle plate (33); Limited of said slide block (10) comprises first limited and the second limited portion; Said first limited forms fastening structure towards said first limiting section and with first limiting section, and said second limited forms fastening structure towards said second limiting section and with second limiting section.
4. telescoping mechanism according to claim 3; It is characterized in that; Said first limiting section is the first baffle plate inclined-plane (311); Said second limiting section is second baffle inclined-plane (331), and the first baffle plate inclined-plane (311) is oppositely arranged with second baffle inclined-plane (331), limits between the said first baffle plate inclined-plane (311) and second baffle inclined-plane (331) and said first barrel (1) to form oat tail groove structure.
5. telescoping mechanism according to claim 4 is characterized in that, the angle of inclination (α) on the said first baffle plate inclined-plane (311) and the angle of inclination (β) on said second baffle inclined-plane (331) equate.
6. telescoping mechanism according to claim 2 is characterized in that, the said first slide block baffle plate (31) is installed on the side surface of said first barrel (1); The end table that the said second slide block baffle plate (33) is installed in said first barrel (1) makes progress.
7. telescoping mechanism according to claim 6 is characterized in that, the said second slide block baffle plate (33) is removably mounted on the end surfaces of said first barrel (1) along the direction towards said telescoping mechanism.
8. telescoping mechanism according to claim 3 is characterized in that, said first limiting section is the first baffle plate step, and said second limiting section is the second baffle step; Wherein, form said first baffle plate step and second baffle step respectively on the opposite face of the said first slide block baffle plate (31) and the second slide block baffle plate (33); Limit between said first baffle plate step and said second baffle step and said first barrel (1) and form the T slot structure.
9. telescoping mechanism according to claim 1 is characterized in that, the side towards said second barrel (3) of said slide block (10) is provided with oil groove (11), and said oil groove is provided with lubricant in (11).
10. according to each described telescoping mechanism in the claim 1 to 9, it is characterized in that said telescoping mechanism is a telescopic jib.
11. telescoping mechanism according to claim 10 is characterized in that, said telescopic jib is box telescopic jib or U-shaped telescopic jib.
12., it is characterized in that said telescoping mechanism is a telescopic outrigger according to each described telescoping mechanism in the claim 1 to 9.
13. a construction machinery and equipment comprises telescoping mechanism, it is characterized in that, said telescoping mechanism is each described telescoping mechanism in the claim 1 to 9.
14. construction machinery and equipment according to claim 13 is characterized in that, said construction machinery and equipment is hoisting crane or concrete pump truck.
15. a fire-fighting machinery comprises telescoping mechanism, it is characterized in that, said telescoping mechanism is each described telescoping mechanism in the claim 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101945828A CN102398864A (en) | 2011-07-12 | 2011-07-12 | Telescopic mechanism, engineering machinery and fire-fighting machinery |
| PCT/CN2011/078170 WO2013007050A1 (en) | 2011-07-12 | 2011-08-09 | Expansion mechanism, engineering machinery and fire-fighting machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101945828A CN102398864A (en) | 2011-07-12 | 2011-07-12 | Telescopic mechanism, engineering machinery and fire-fighting machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102398864A true CN102398864A (en) | 2012-04-04 |
Family
ID=45881584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101945828A Pending CN102398864A (en) | 2011-07-12 | 2011-07-12 | Telescopic mechanism, engineering machinery and fire-fighting machinery |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102398864A (en) |
| WO (1) | WO2013007050A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103159140A (en) * | 2013-03-27 | 2013-06-19 | 中联重科股份有限公司 | Sliding block device, telescopic arm frame and crane |
| CN103382811A (en) * | 2013-06-19 | 2013-11-06 | 阿特拉斯科普柯(南京)建筑矿山设备有限公司 | Rock drill telescopic arm and rock drill |
| CN104986674A (en) * | 2015-07-31 | 2015-10-21 | 徐州重型机械有限公司 | Telescopic arm structure, suspension arm structure and crane |
| CN105293318A (en) * | 2015-11-18 | 2016-02-03 | 德马科起重机械有限公司 | Super-lifting device for crane and use method |
| CN108529453A (en) * | 2017-03-02 | 2018-09-14 | 马尼托瓦克起重机有限责任公司 | The wear-resistant pad with mold insert for telescopic cantilever component |
| CN112065057A (en) * | 2020-09-18 | 2020-12-11 | 南通联源机电科技股份有限公司 | Passive truss telescopic mechanism of concrete spreader |
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|---|---|---|---|---|
| FR3024720B1 (en) * | 2014-08-07 | 2018-11-16 | Manitou Bf | TELESCOPIC HANDLING DEVICE HAVING AT LEAST TWO RELATIVE SLIDING ELEMENTS |
| JP6820167B2 (en) | 2015-07-30 | 2021-01-27 | マニタウォック クレイン カンパニーズ， エルエルシーＭａｎｉｔｏｗｏｃ Ｃｒａｎｅ Ｃｏｍｐａｎｉｅｓ， Ｌｌｃ | Segmented followable wear pad for telescopic boom assembly |
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| CN103159140A (en) * | 2013-03-27 | 2013-06-19 | 中联重科股份有限公司 | Sliding block device, telescopic arm frame and crane |
| CN103382811A (en) * | 2013-06-19 | 2013-11-06 | 阿特拉斯科普柯(南京)建筑矿山设备有限公司 | Rock drill telescopic arm and rock drill |
| CN104986674A (en) * | 2015-07-31 | 2015-10-21 | 徐州重型机械有限公司 | Telescopic arm structure, suspension arm structure and crane |
| CN104986674B (en) * | 2015-07-31 | 2017-01-25 | 徐州重型机械有限公司 | Telescopic arm structure, suspension arm structure and crane |
| CN105293318A (en) * | 2015-11-18 | 2016-02-03 | 德马科起重机械有限公司 | Super-lifting device for crane and use method |
| CN105293318B (en) * | 2015-11-18 | 2017-09-29 | 德马科起重机械有限公司 | A kind of crane super lifting device and application method |
| CN108529453A (en) * | 2017-03-02 | 2018-09-14 | 马尼托瓦克起重机有限责任公司 | The wear-resistant pad with mold insert for telescopic cantilever component |
| US11111115B2 (en) | 2017-03-02 | 2021-09-07 | Maniitowoc Crane Companies, LLC | Wear pad with insert for telescoping boom assembly |
| CN112065057A (en) * | 2020-09-18 | 2020-12-11 | 南通联源机电科技股份有限公司 | Passive truss telescopic mechanism of concrete spreader |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013007050A1 (en) | 2013-01-17 |
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Address after: 410013 Yuelu District, Hunan, silver basin Road, No. 361, No. Applicant after: Zoomlion Heavy Industry Science & Technology Development Co., Ltd. Address before: 410013 Yuelu District, Hunan, silver basin Road, No. 361, No. Applicant before: Chang Sha Zoomlion Heavy Industry Science & Technology Development Co., Ltd. |
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Application publication date: 20120404 |