CN202297059U - Telescopic arm and sliding block mechanism thereof - Google Patents
Telescopic arm and sliding block mechanism thereof Download PDFInfo
- Publication number
- CN202297059U CN202297059U CN2011203076362U CN201120307636U CN202297059U CN 202297059 U CN202297059 U CN 202297059U CN 2011203076362 U CN2011203076362 U CN 2011203076362U CN 201120307636 U CN201120307636 U CN 201120307636U CN 202297059 U CN202297059 U CN 202297059U
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- China
- Prior art keywords
- screw rod
- slide block
- telescopic boom
- arm
- head
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- Expired - Lifetime
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Abstract
The utility model discloses a sliding block mechanism of a telescopic arm. The sliding block mechanism comprises a screw rod, a screw rod sleeve fixed between an outer section arm and a shroud ring, a sliding block positioned between an inner section arm and the outer section arm, and a base plate arranged between the sliding block and the head of the screw rod, wherein a connecting piece is inserted into through holes of the sliding block and the base plate; a lubricating grease containing cavity is formed between the connecting piece and the inner section arm; the head of the screw rod is in an arc shape which is convex outward; and the connecting piece is provided with a containing part which is concave inward and is matched with the head of the screw rod. After the sliding block mechanism is adopted, a gap between the inner section arm and the outer section arm can be conveniently adjusted by screwing the screw rod into and out of the screw rod sleeve, so that the sliding block and the telescopic arm are guaranteed to be in a surface contact state in the process of relative motion, and the telescopic stability of the telescopic arm can be improved. On that basis, the utility model also provides the telescopic arm provided with the sliding block mechanism.
Description
Technical field
The utility model relates to the construction machinery and equipment technology, is specifically related to a kind of telescopic boom and slide block mechanism thereof.
Background technology
Carry out in the mechanical equipment of aloft work at some, adopt telescopic boom mostly as its main load-carrying element.Telescopic boom is generally box-structure, is nested together by the arm of a few joint different cross section sizes joint, and two adjacent joint arms joints are respectively acromere arm and internal segment arm.In the prior art; Be provided with the support slipper structure in each arm section header portion and afterbody; The acromere arm of telescopic boom contacts with this slide block structure with the internal segment arm; Cooperate stretching structure to realize the relative motion between the arm joint simultaneously, thereby change the operation length and the lifting altitude of telescopic boom, realize the purpose of aloft work.
At present, the slide block structure that telescopic boom uses is fixedly slide block, the both sides of this slide block respectively with adjacent inside and outside joint arm bearing fit, to realize relative motion between the two.But, owing in part processing and fitting process, have error accumulation, therefore; Can't guarantee reliably that the tolerance clearance between the adjacent expansion arm equates; Often occur the line contact between slide block and the telescopic boom, not only cause slider wear, also influence the flexible stationarity of telescopic boom simultaneously.
In addition; In slide block and the telescopic boom relative motion process; When telescopic boom stretches out stroke when longer, owing to have the gap between adjacent expansion arm and the slide block, the lap position at arm head produces angle of inclination easily; The generation of these angle of inclination causes the deflection of whole jib to increase, thereby influences the telescopicing performance of telescopic boom.
In view of this, need a kind of slide block mechanism badly and solve the line contact problems between telescopic boom and the slide block, to guarantee the telescopic boom operation of steadily reliably stretching.
The utility model content
To above-mentioned defective, the technical matters that the utility model solves is, a kind of slide block mechanism with telescopic boom of controllability is provided.This mechanism can regulate the gap between the telescopic boom easily, and anti-limited slip block line occurs with telescopic boom and contacts in operational process, guarantee the stationarity that telescopic boom is flexible.On this basis, the utility model also provides a kind of telescopic boom with this slide block mechanism.
The slide block mechanism of the telescopic boom that the utility model provides; Comprise the tapped screw rod cover that is fixedly installed on the acromere arm; Screw rod is connected with said screw rod cover through screw thread fit; Said screw head extend in the said acromere arm, and and places the slide block between said internal segment arm and the acromere arm to offset.
Preferably, the head periphery of said acromere arm is provided with shroud ring, and said screw rod cover is fixedly installed between said acromere arm and the said shroud ring.
Preferably, be provided with backing plate with the said slide block of said screw rod contact side, said backing plate is arranged between said screw head and the said slide block.
Preferably, have the through hole that is provided with said screw coaxial on said slide block and the said backing plate, be fitted with attaching parts in the said through hole, form the lubricating grease container cavity between said attaching parts and the said internal segment arm.
Preferably, the head of said screw rod is an external convex arc shape, offers the indent accommodation section of matching with the head of said screw rod on the said attaching parts, and the opening part of said indent accommodation section extends radially out the boss that offsets with said backing plate.
Preferably, the fitting surface of said screw rod and screw rod cover comprises head smooth section and tailing screw flight section, and the thread segment diameter is greater than the smooth section diameter.
Preferably, said screw rod tail is provided with oblique tapped bore, is provided with the screw of fixing said screw rod and said screw rod cover in this oblique tapped bore.
Preferably, said screw rod tail be can the application of force structure.
The telescopic boom that the utility model provides is provided with slide block between its internal segment arm and the acromere arm, the slide block mechanism that the both sides of internal segment arm head portion and below are provided with aforementioned telescopic boom.
Compared with prior art, the utility model is fixedly installed on tapped screw rod cover on the acromere arm, can regulate the relative gap between the telescopic boom easily through the spinning in and out of screw rod in the screw rod cover, guarantees that the tolerance clearance between the adjacent expansion arm equates; Simultaneously, can also guarantee that through the screw rod adjusting slide block and telescopic boom are in surface contact state in operational process, thereby improve the flexible stationarity of telescopic boom.
In the preferred version of the utility model, be equipped with shroud ring, be fixedly connected to form firm rigid construction between shroud ring and screw rod cover and the acromere arm, can further improve the stability that screw rod is regulated in the head outer periphery of acromere arm.In addition, this scheme can reduce the head dimensions of telescopic boom, makes head construction compact more, increases the magnification ratio of telescopic boom.
In another preferred version of the utility model; Be provided with backing plate between screw head and the slide block; When screw rod precession screw rod cover was adjusted the gap of inside and outside joint arm, screw head and backing plate offseted and it are exerted pressure, and backing plate can evenly pass to slide block with the power of bearing; Thereby make the slide block each several part stressed evenly, more help the relative motion of slide block and inside and outside joint arm.
In the another preferred version of the utility model; Have the through hole that is provided with screw coaxial on slide block and the backing plate, be fitted with attaching parts in this through hole, form a cavity between attaching parts and the internal segment arm; This cavity can be used for storing lubricating grease, for the start performance of slide block provides reliable guarantee.
Description of drawings
Fig. 1 is the front view of the said telescopic boom head construction of embodiment;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the b portion enlarged drawing of Fig. 2.
Among the figure:
The specific embodiment
The core design of the utility model is to provide a kind of slide block mechanism of telescopic boom; This mechanism is fixedly installed on tapped screw rod cover on the acromere arm; Regulate the relative gap between the telescopic boom through the spinning in and out of screw rod in the screw rod cover; Guarantee that slide block and telescopic boom are in surface contact state in operational process, thereby improve the flexible stationarity of telescopic boom.
In order to make those skilled in the art better understand the technical scheme of the utility model, do further to specify below in conjunction with Figure of description.
The main body of the said telescopic boom of this embodiment constitutes identical with prior art, and promptly the arm joint by the inside and outside nested setting of more piece constitutes, and sees also Fig. 1, and this figure is the front view of the head construction of the said telescopic boom of this embodiment.For clear relative position relation between the inside and outside joint arm is shown, the head construction of these telescopic boom two joint arm joints only is shown, among Fig. 1 owing to those skilled in the art can realize based on prior art fully, so this paper repeats no more.Different with prior art is, the said telescopic boom of this programme adopts adjustable slide block mechanism, and specifically please in the lump referring to Fig. 2 and Fig. 3, wherein, Fig. 2 is the A-A cutaway view of Fig. 1, and Fig. 3 is the enlarged drawing of b portion among Fig. 2.
Can know by figure; Tapped screw rod cover 7 is fixedly installed on the acromere arm 2; Screw rod 8 is connected with screw rod cover 7 through screw thread fit; Can regulate the gap between internal segment arm 1 and the acromere arm 2 through the spinning in and out of screw rod 8 between screw rod cover 7, guarantee the face contact between slide block 5 and the telescopic boom, make the telescopic boom operation of steadily reliably stretching.
Because screw rod cover 7 has certain length; Screw rod 8 unstable phenomenon possibly occur in the precession process; In the head periphery of acromere arm 2 shroud ring 3 can nestedly be set for this reason; Captive joint between shroud ring 3 and screw rod cover 7 and the acromere arm 2, thereby form firm rigid construction, help to improve the stability that screw rod is regulated.In addition, members such as shroud ring 3, screw rod cover 7 all are positioned at the outer end of telescopic boom, can reduce the head dimensions of telescopic boom like this, make the telescopic boom head construction compact.The telescopic boom that adopts this programme compared with prior art, if telescopic boom is isometric when shrinking fully, then it can obtain relatively long extension elongation when all stretching out, and has increased its operation length and lifting altitude.
Further as shown in the figure; Between the head of slide block 5 and screw rod 8, be provided with backing plate 6; Backing plate 6 can evenly be passed to the power from screw rod 8 of bearing the whole surface of slide block 5, has avoided slide block each several part unbalance stress, helps the relative motion of slide block and inside and outside joint arm.
In addition, this programme also is provided with the lubricating grease storage organization.As shown in the figure, offer the through hole 10 with screw rod 8 coaxial settings on slide block 5 and the backing plate 6, be fitted with attaching parts 4 in this through hole 10, and between attaching parts 4 and internal segment arm 2 formation lubricating grease container cavity.The existence in this chamber can be stored lubricating grease easily, sets up good lubricating condition between the bearing fit face for slide block 5 and internal segment arm 1, guarantees the start performance of slide block.
Particularly, the head of screw rod 8 is an external convex arc shape, offers the indent accommodation section of matching with screw rod 8 heads on the attaching parts 4, and the opening part of this indent accommodation section extends radially out the boss 11 that offsets with backing plate 6.When screw rod 8 in screw rod cover 7 during precession, 8 pairs of attaching parts 4 applied loads of screw rod, attaching parts 4 is given the backing plate 6 that offsets with it through boss 11 with loading transfer, backing plate 6 is given slide block 5 with the loading transfer that receives again.This type of attachment of attaching parts 4, slide block 5 and backing plate 6 has the automatically regulating function, can compensate not COINCIDENCE PROBLEMS of the axis that causes because of assembly error.In addition, this type of attachment also helps between slide block 5 and the telescopic boom contact of realization face, can reduce to stretch out the angle of inclination that stroke produces at the arm head lap position when longer when telescopic boom, reduces the deflection of arm joint, helps telescopic boom and steadily stretches.
In actual mechanical process, thread looseness possibly appear between screw rod 8 and the screw rod cover 7, and cause the telescopic boom gap change, thereby cause telescopic boom to rock.For this reason, oblique tapped bore can be set at the afterbody of screw rod 8, in the screw thread of screw 9 through this oblique tapped bore precession screw rod cover 7, play the effect of the relative position of standing screw cover 7 and screw rod 8, guarantee the stationarity that telescopic boom is flexible.
For making screw rod 8 play fastening preferably effect and being convenient to installing/dismounting, its afterbody can adopt countersunk head, socket cap, the first-class structure that can use the all-purpose tool application of force of hexagonal.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (9)
1. the slide block mechanism of a telescopic boom; It is characterized in that; Comprise: be fixedly installed on the tapped screw rod cover (7) on the acromere arm (2); Screw rod (8) is connected with said screw rod cover (7) through screw thread fit, and said screw rod (8) head extend in the said acromere arm (2), and and places the slide block (5) between said internal segment arm (1) and the acromere arm (2) to offset.
2. the slide block mechanism of telescopic boom according to claim 1 is characterized in that, the head periphery of said acromere arm (2) is provided with shroud ring (3), and said screw rod cover (7) is fixedly installed between said acromere arm (2) and the said shroud ring (3).
3. the slide block mechanism of telescopic boom according to claim 1 and 2 is characterized in that, is provided with backing plate (6) with the said slide block (5) of said screw rod (8) contact side, and said backing plate (6) is arranged between said screw rod (8) head and the said slide block (5).
4. the slide block mechanism of telescopic boom according to claim 3; It is characterized in that; Have through hole (10) on said slide block (5) and the said backing plate (6) with the coaxial setting of said screw rod (8); Be fitted with attaching parts (4) in the said through hole (10), form the lubricating grease container cavity between said attaching parts (4) and the said internal segment arm (2).
5. the slide block mechanism of telescopic boom according to claim 4; It is characterized in that; The head of said screw rod (8) is an external convex arc shape; Offer the indent accommodation section of matching with the head of said screw rod (8) on the said attaching parts (4), the opening part of said indent accommodation section extends radially out the boss (11) that offsets with said backing plate (6).
6. the slide block mechanism of telescopic boom according to claim 1 and 2 is characterized in that, said screw rod (8) comprises head smooth section and tailing screw flight section with the fitting surface of screw rod cover (7), and the thread segment diameter is greater than the smooth section diameter.
7. the slide block mechanism of telescopic boom according to claim 1 and 2 is characterized in that, said screw rod (8) afterbody is provided with oblique tapped bore, is provided with the screw (9) of fixing said screw rod (8) and said screw rod cover (7) in this oblique tapped bore.
8. the slide block mechanism of telescopic boom according to claim 7 is characterized in that, said screw rod (8) afterbody be can the application of force structure.
9. a telescopic boom is provided with slide block between its internal segment arm and the acromere arm, it is characterized in that, the both sides of internal segment arm head portion and below are provided with the slide block mechanism of each described telescopic boom in the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203076362U CN202297059U (en) | 2011-08-22 | 2011-08-22 | Telescopic arm and sliding block mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203076362U CN202297059U (en) | 2011-08-22 | 2011-08-22 | Telescopic arm and sliding block mechanism thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202297059U true CN202297059U (en) | 2012-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203076362U Expired - Lifetime CN202297059U (en) | 2011-08-22 | 2011-08-22 | Telescopic arm and sliding block mechanism thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202297059U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMO20130158A1 (en) * | 2013-05-31 | 2014-12-01 | Cnh Italia Spa | ADJUSTABLE ANTI-WEAR DEVICE FOR A TELESCOPIC ARM. |
| CN104875030A (en) * | 2015-05-01 | 2015-09-02 | 安庆安星电气有限公司 | Telescopic cantilever of radial drilling machine |
| CN105836681A (en) * | 2016-05-17 | 2016-08-10 | 安徽铜冠机械股份有限公司 | Telescopic arm of arm-type lifting platform car |
| CN108383055A (en) * | 2018-05-10 | 2018-08-10 | 北京新能正源智能装备有限公司 | Arch installs trolley and its telescopic arm and arm joint gap adjusting structure |
| CN113120783A (en) * | 2021-04-19 | 2021-07-16 | 三一汽车起重机械有限公司 | Adjusting device for crane boom, crane boom and crane |
| EP4134347A1 (en) * | 2021-08-13 | 2023-02-15 | Caterpillar Inc. | Wear pad assembly and method for adjusting |
| WO2023018541A1 (en) * | 2021-08-13 | 2023-02-16 | Caterpillar Inc. | Wear pad, telescopic boom assembly and work machine |
| US12122647B2 (en) | 2021-08-13 | 2024-10-22 | Caterpillar Inc. | Wear pad assembly and method for adjusting |
-
2011
- 2011-08-22 CN CN2011203076362U patent/CN202297059U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMO20130158A1 (en) * | 2013-05-31 | 2014-12-01 | Cnh Italia Spa | ADJUSTABLE ANTI-WEAR DEVICE FOR A TELESCOPIC ARM. |
| WO2014191561A1 (en) * | 2013-05-31 | 2014-12-04 | Cnh Industrial Italia S.P.A. | Adjustable wear pad assembly for a telescopic boom |
| US9950911B2 (en) | 2013-05-31 | 2018-04-24 | Cnh Industrial America Llc | Adjustable wear pad assembly for a telescopic boom |
| CN104875030A (en) * | 2015-05-01 | 2015-09-02 | 安庆安星电气有限公司 | Telescopic cantilever of radial drilling machine |
| CN105836681A (en) * | 2016-05-17 | 2016-08-10 | 安徽铜冠机械股份有限公司 | Telescopic arm of arm-type lifting platform car |
| CN108383055A (en) * | 2018-05-10 | 2018-08-10 | 北京新能正源智能装备有限公司 | Arch installs trolley and its telescopic arm and arm joint gap adjusting structure |
| CN108383055B (en) * | 2018-05-10 | 2024-09-13 | 北京新能正源智能装备有限公司 | Arch frame mounting trolley and telescopic arm and arm joint gap adjusting structure thereof |
| CN113120783A (en) * | 2021-04-19 | 2021-07-16 | 三一汽车起重机械有限公司 | Adjusting device for crane boom, crane boom and crane |
| CN113120783B (en) * | 2021-04-19 | 2023-08-29 | 三一汽车起重机械有限公司 | Adjusting device for boom, boom and crane |
| EP4134347A1 (en) * | 2021-08-13 | 2023-02-15 | Caterpillar Inc. | Wear pad assembly and method for adjusting |
| WO2023018541A1 (en) * | 2021-08-13 | 2023-02-16 | Caterpillar Inc. | Wear pad, telescopic boom assembly and work machine |
| US12122647B2 (en) | 2021-08-13 | 2024-10-22 | Caterpillar Inc. | Wear pad assembly and method for adjusting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170220 Address after: 221004 Jiangsu Province, Xuzhou City Yunlong District No. 165 Patentee after: Xugong fire safety equipment Co. Ltd. Address before: 221004 Xuzhou, Zhejiang Province, Jiangsu Road No. 165 Patentee before: Xuzhou Heavy Machinery Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |