CN202707721U - Box-shaped arm frame and engineering machine - Google Patents
Box-shaped arm frame and engineering machine Download PDFInfo
- Publication number
- CN202707721U CN202707721U CN 201220391566 CN201220391566U CN202707721U CN 202707721 U CN202707721 U CN 202707721U CN 201220391566 CN201220391566 CN 201220391566 CN 201220391566 U CN201220391566 U CN 201220391566U CN 202707721 U CN202707721 U CN 202707721U
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- Prior art keywords
- box
- joint
- shaped arm
- arm joint
- jib
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Abstract
The utility model discloses a box-shaped arm frame which comprises at least two box-shaped arm sections (30). A front box-shaped arm section is inserted into a hollow cavity of a back box-shaped arm section. Each box-shaped arm section is provided with at least four side walls (31), wherein gaps (31a) are formed between outer surfaces of the plurality of side walls of the front box-shaped arm section and the inner surfaces of the plurality of side walls of the back box-shaped arm section. Back supporting plates (35) are arranged on the outer surfaces of back end portions of the side walls of the front box-shaped arm section, and front supporting plates (33) are arranged on the inner surfaces of front end portions of the side walls of the back box-shaped arm section. The front supporting plates and the back supporting plates are arranged between the gaps to support the front box-shaped arm section in the back box-shaped arm section. The utility model further provides an engineering machine. The box-shaped arm frame is easy to stretch out and draw back, and relatively low in cost.
Description
Technical field
The utility model relates to engineering machinery field, particularly, relates to a kind of box jib and a kind of engineering machinery that comprises this box jib.
Background technique
A lot of engineering machinery (such as hoist, concrete mixer, concrete sprayer etc.) all are provided with telescopic box jib.In order to realize the flexible of box jib, usually in the arm joint inside of box jib pulley mechanism is set.But this pulley mechanism complex structure needs that the arm joint of box jib is inner to have larger space and just can finish layout to pulley mechanism.This has caused the box jib volume larger, and weight is heavier.
Therefore, the volume that how to reduce box jib becomes the technical problem that related domain needs to be resolved hurrily.
The model utility content
The purpose of this utility model provides a kind of box jib and a kind of engineering machinery that comprises this box jib.Described box jib has less volume.
To achieve these goals, as an aspect of the present utility model, a kind of box jib is provided, this box jib comprises at least two joint box-shaped arm joints, in the cavity that the described box-shaped arm of a joint saved after the described box-shaped arm joint of last joint inserted, described box-shaped arm joint has at least four sidewalls, wherein, be formed with the gap between the internal surface of described a plurality of sidewalls of the outer surface of a plurality of described sidewalls of the described box-shaped arm joint of last joint and the described box-shaped arm joint of a rear joint, be provided with rear bearing sheet on the outer surface of the rearward end of the described sidewall of the described box-shaped arm joint of last joint, be provided with front end panel on the internal surface of the front end of the described sidewall of the described box-shaped arm joint of a rear joint, this front end panel and described rear bearing sheet are arranged among the described gap, described last joint box-shaped arm joint is supported in the described rear joint box-shaped arm joint.
Preferably, described gap between the described box-shaped arm of the adjacent two joints joint comprises and described a plurality of sidewalls of described box-shaped arm joint a plurality of parts one to one that the described rear bearing sheet on the described front end panel on the described box-shaped arm joint of a rear joint and the described box-shaped arm joint of last joint is separately positioned in the different piece in the described gap between the described box-shaped arm joint of adjacent two joints.
Preferably, the height of the height of described front end panel and described rear bearing sheet is all than the difference little 0.5mm to 2mm of described last joint box-shaped arm joint with the height of the described box-shaped arm joint of a rear joint.
Preferably, also be provided with backstop on the outer surface of the rearward end of the described sidewall of the described box-shaped arm joint of last joint, this backstop is positioned at described rear bearing sheet the place ahead, be provided with positive stop on the internal surface of the front end of the described sidewall of the described box-shaped arm joint of a rear joint, this positive stop is positioned at the rear of described front end panel, described backstop is positioned at described positive stop rear, and the described sidewall that is provided with described backstop is relative with the described sidewall that is provided with described positive stop, so that when described box jib elongation, described positive stop can bump against with described backstop.
Preferably, when the described positive stop collision on the described backstop on the described box-shaped arm of the last joint joint and the described box-shaped arm joint of a rear joint, on the described backstop towards the surface of described positive stop 80% to 99% with described positive stop on overlap towards the surface of described backstop.
Preferably, described positive stop and described backstop are all served as reasons and are had the blocks that flexible material is made.
Preferably, the front end of described box-shaped arm joint is provided with front stiffening plate, and/or the rear end of described box-shaped arm joint is provided with rear stiffening plate.
Preferably, the front end of described box-shaped arm joint is provided with front stiffening plate, should be provided with cylinder installation seat on the front stiffening plate, described box jib also comprises the multi-stage expansion oil cylinder, and this multi-stage expansion oil cylinder is installed on the outer surface of the described box-shaped arm joint of more piece by described cylinder installation seat.
As another aspect of the present utility model, a kind of engineering machinery also is provided, this project machinery comprises box jib, wherein, described box jib is above-mentioned box jib provided by the utility model.
Preferably, described engineering machinery is concrete sprayer.
By rear bearing sheet is set and after a rear joint arm joint arranges front end panel and last joint arm joint can be supported in the joint arm joint at last joint arm joint, the space that layout front end panel and rear bearing sheet need is less, thereby can reduce the volume of box jib.Owing to saved complicated pulley mechanism, therefore, box-shaped arm joint described in the utility model is simple in structure, with low cost.
Other feature and advantage of the present utility model will partly be described in detail in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and consists of the part of specification, is used from explanation the utility model with following embodiment one, but does not consist of restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the plan view of the part of box jib described in the utility model;
Fig. 2 is the side view of the box jib shown in Fig. 1;
Fig. 3 is the A-A sectional view of the box jib shown in Fig. 2;
Fig. 4 is the B-B sectional view of the box jib shown in Fig. 2; With
Fig. 5 is the schematic representation of engineering machinery described in the utility model.
Description of reference numerals
20 box jibs, 30 box-shaped arms joint
31 sidewalls, 32 positive stops
33 front end panels, 34 backstops
35 rear bearing sheets, 36 front stiffening plates
37 rear stiffening plate 40 multi-stage expansion oil cylinders
31a gap 40a cylinder installation seat
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
As shown in Fig. 1 to Fig. 4, as an aspect of the present utility model, a kind of box jib 20 is provided, this box jib 20 comprises at least two joint box-shaped arm joints 30, one saved in the cavity of box-shaped arm joint 30 after last joint box-shaped arm joint 30 inserted, box-shaped arm joint 30 has at least four sidewalls 31, wherein, be formed with gap 31a between the internal surface of a plurality of sidewalls 31 of the outer surface of a plurality of sidewalls 31 of last joint box-shaped arm joint 30 and a rear joint box-shaped arm joint 30, be provided with rear bearing sheet 35 on the outer surface of the rearward end of the sidewall 31 of last joint box-shaped arm joint 30, be provided with front end panel 33 on the internal surface of the front end of the sidewall 31 of a rear joint box-shaped arm joint 30, this front end panel 33 and rear bearing sheet 35 are arranged among the 31a of gap, in a joint box-shaped arm joint 30 after last joint box-shaped arm joint 30 is supported on.
When box jib 20 was flexible, front end panel 33 and rear bearing sheet 35 had reduced the area of contact between last joint box-shaped arm joint 30 and the rear joint box-shaped arm joint 30, thereby had reduced the frictional force of adjacent two joint box-shaped arms joints 30 when relative sliding.Utilize the flexible structure of simplifying box jib 20 of front end panel 33 and rear bearing sheet 35 guiding box jibs 20, and reduced the cost of box jib 20.
In box jib 20, the cross-section area of last joint box-shaped arm joint 30 is less than the cross-section area of a rear joint box-shaped arm joint 30.For the ease of more piece box-shaped arm joint 30 is fitted together, and be convenient to the flexible of box jib 20, preferably, the height of front end panel 33 and rear bearing sheet 35 is less than 1/2nd of the height difference of last joint box-shaped arm joint 30 and a rear joint box-shaped arm joint 30.For example, the height of front end panel 33 and rear bearing sheet 35 can save 1/2nd little 0.5mm to 2mm of the height difference of box-shaped arm joint 30 than last joint box-shaped arm joint 30 and rear, thereby guarantees that box jib 20 is capable of expansion and contraction.
In order to prevent that further last joint box-shaped arm joint 30 is deviate from when box jib 20 is elongated to range from a rear joint box-shaped arm joint 30, preferably, also be provided with backstop 34 on the outer surface of the rearward end of the sidewall 31 of last joint box-shaped arm joint 30, this backstop 34 is positioned at rear bearing sheet 35 the place aheads, be provided with positive stop 32 on the internal surface of the front end of the sidewall 31 of a rear joint box-shaped arm joint 30, this positive stop 32 is positioned at the rear of front end panel 33, backstop 34 is positioned at positive stop 32 rears, and the sidewall 31 that is provided with backstop 34 is relative with the sidewall 31 that is provided with positive stop 32, so that when box jib 20 elongation, positive stop 32 can bump against with backstop 34.
For the ease of understanding, the below will make an explanation to " highly " that above occurs.Take front end panel 33 as example, the contacted surface of internal surface with box-shaped arm joint 30 on the front end panel 33 is first surface, the surface relative with this first surface is second surface on the front end panel 33, and the height of front end panel 33 refers to the distance between described first surface and the described second surface.The short transverse of the short transverse of the short transverse of rear bearing sheet 35, positive stop 32 and backstop 34 is consistent with the short transverse of front end panel 33, repeats no more here.
In the utility model, particular location to positive stop 32 and backstop 34 does not have specific (special) requirements, as long as positive stop 32 and backstop 34 can bump against when box jib 20 is elongated to range, to prevent from deviating to get final product in last joint box-shaped arm joint 30 and the rear joint box-shaped arm joint 30.
In order to prevent more reliably deviating from last joint box-shaped arm joint 30 and the rear joint box-shaped arm joint 30, preferably, when the backstop 34 on the last joint box-shaped arm joint 30 and positive stop 32 on the rear joint box-shaped arm joint 30 bump against, on the backstop 34 towards the surface of positive stop 32 80% to 99% with positive stop 32 on overlap towards the surface of backstop 34.In the utility model, positive stop 32 and backstop 34 can have identical shape, therefore, can align with the side of backstop 34 in the side of positive stop 32, thereby in the time of can guaranteeing that positive stop 32 on a rear joint box-shaped arm joint 30 and the backstop 34 on the last joint box-shaped arm joint 30 bump against, positive stop 32 ear end faces have the larger area that overlaps with the front-end face of backstop 34.
Impact when bumping against with positive stop 32 on the rear joint box-shaped arm joint 30 in order to cushion backstop 34 on the last joint box-shaped arm joint 30, preferably, positive stop 32 is all served as reasons with backstop 34 and is had the blocks that flexible material is made.For example, positive stop 32 and backstop 34 are made by rubber material.Described " blocks " can be cuboid, square body, cylindrical body etc.
Save the rigidity of 30 front ends in order to increase the box-shaped arm, preferably, stiffening plate 36 before can arranging at the front end of box-shaped arm joint 30.Save the rigidity of 30 rear ends in order to increase the box-shaped arm, preferably, stiffening plate 37 after can arranging in the rear end of box-shaped arm joint 30.
In the utility model, can control the flexible of box jib 20 by multi-stage oil cylinder 40, as shown in Figure 5.For the ease of multi-stage oil cylinder 40 is installed, the front end of box-shaped arm joint is provided with front stiffening plate 36, should be provided with cylinder installation seat 40a on the front stiffening plate 36, box jib 20 also comprises multi-stage expansion oil cylinder 40, and this multi-stage expansion oil cylinder 40 is installed on the outer surface of more piece box-shaped arm joint 30 by cylinder installation seat 40a.
As another aspect of the present utility model, a kind of engineering machinery is provided, this project machinery comprises box jib 20, wherein, this box jib 20 is above-mentioned box jib provided by the utility model, as shown in Figure 5.In the utility model, described engineering machinery can be concrete sprayer, also can be coagulation figure pump truck etc.Shown in Fig. 5 is the concrete sprayer that comprises box jib described in the utility model, and as can be seen from the figure, box jib 20 can rotate around axis L, and can be flexible along fore-and-aft direction.
By rear bearing sheet is set and after a rear joint arm joint arranges front end panel and last joint arm joint can be supported in the joint arm joint at last joint arm joint, the space that layout front end panel and rear bearing sheet need is less, thereby can reduce the volume of box jib.Owing to saved complicated pulley mechanism, therefore, box-shaped arm joint described in the utility model is simple in structure, with low cost.
Below describe by reference to the accompanying drawings preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in the above-mentioned mode of execution; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Need to prove that in addition each the concrete technical characteristics described in above-mentioned embodiment in reconcilable situation, can make up by any suitable mode.For fear of unnecessary repetition, the utility model is to the no longer separately explanation of various possible compound modes.
In addition, also can carry out combination in any between the various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (10)
1. box jib, this box jib comprises at least two joint box-shaped arm joints (30), the described box-shaped arm of a joint saved in the cavity of (30) after the described box-shaped arm joint of last joint (30) inserted, described box-shaped arm joint (30) has at least four sidewalls (31), it is characterized in that, be formed with gap (31a) between the internal surface of described a plurality of sidewalls (31) of the outer surface of a plurality of described sidewall (31) of the described box-shaped arm joint of last joint (30) and a rear described box-shaped arm joint of joint (30), be provided with rear bearing sheet (35) on the outer surface of the rearward end of the described sidewall (31) of the described box-shaped arm joint of last joint (30), be provided with front end panel (33) on the internal surface of the front end of the described sidewall (31) of a rear described box-shaped arm joint of joint (30), this front end panel (33) and described rear bearing sheet (35) are arranged among the described gap (31a), described last joint box-shaped arm joint (30) is supported in the described rear joint box-shaped arm joint (30).
2. box jib according to claim 1, it is characterized in that, described gap (31a) between the adjacent two joint described box-shaped arm joints (30) comprises and described a plurality of sidewalls (31) of described box-shaped arm joint (30) a plurality of parts one to one, and the described front end panel (33) on the rear described box-shaped arm joint of joint (30) and the described rear bearing sheet (35) on the described box-shaped arm joint of last joint (30) are separately positioned in the different piece in the described gap (31a) of the described box-shaped arm of adjacent two joints between saving.
3. box jib according to claim 1 and 2, it is characterized in that the height of the height of described front end panel (34) and described rear bearing sheet (35) is all than the difference little 0.5mm to 2mm of described last joint box-shaped arm joint (30) with the height of a rear described box-shaped arm joint of joint (30).
4. box jib according to claim 1, it is characterized in that, also be provided with backstop (34) on the outer surface of the rearward end of the described sidewall (31) of the described box-shaped arm joint of last joint (30), this backstop (34) is positioned at described rear bearing sheet (35) the place ahead, be provided with positive stop (32) on the internal surface of the front end of the described sidewall (31) of the described box-shaped arm joint of a rear joint, this positive stop (32) is positioned at the rear of described front end panel (33), described backstop (34) is positioned at described positive stop (32) rear, and the described sidewall (31) that is provided with described backstop (34) is relative with the described sidewall (31) that is provided with described positive stop (32), so that when described box jib elongation, described positive stop (32) can bump against with described backstop (34).
5. box jib according to claim 4, it is characterized in that, when the described backstop (34) on the described box-shaped arm of the last joint joint (30) and described positive stop (32) on the rear described box-shaped arm joint of joint (30) bumped against, 80% to 99% of the upper surface towards described positive stop (32) of described backstop (34) upward overlapped towards the surface of described backstop (34) with described positive stop (32).
6. according to claim 4 or 5 described box jibs, it is characterized in that described positive stop (32) is all served as reasons with described backstop (34) and had the blocks that flexible material is made.
7. box jib according to claim 1 is characterized in that, the front end of described box-shaped arm joint (30) is provided with front stiffening plate (36), and/or the rear end of described box-shaped arm joint (30) is provided with rear stiffening plate (37).
8. box jib according to claim 7, it is characterized in that, the front end of described box-shaped arm joint is provided with front stiffening plate (36), should be provided with cylinder installation seat (40a) on the front stiffening plate (36), described box jib also comprises multi-stage expansion oil cylinder (40), and this multi-stage expansion oil cylinder (40) is installed on the outer surface of the described box-shaped arm joint of more piece (30) by described cylinder installation seat (40a).
9. engineering machinery, this project machinery comprises box jib (20), it is characterized in that, this box jib (20) is the described box jib of any one in the claim 1 to 8.
10. engineering machinery according to claim 9 is characterized in that, this project machinery is concrete sprayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391566 CN202707721U (en) | 2012-08-08 | 2012-08-08 | Box-shaped arm frame and engineering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391566 CN202707721U (en) | 2012-08-08 | 2012-08-08 | Box-shaped arm frame and engineering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202707721U true CN202707721U (en) | 2013-01-30 |
Family
ID=47588028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220391566 Expired - Lifetime CN202707721U (en) | 2012-08-08 | 2012-08-08 | Box-shaped arm frame and engineering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202707721U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014023074A1 (en) * | 2012-08-08 | 2014-02-13 | 中联重科股份有限公司 | Box-shaped boom section and box-shaped boom of concrete sprayer and concrete sprayer |
| CN104176655A (en) * | 2014-08-27 | 2014-12-03 | 常熟市永固起重设备安装工程有限公司 | High-hardness hoisting arm |
-
2012
- 2012-08-08 CN CN 201220391566 patent/CN202707721U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014023074A1 (en) * | 2012-08-08 | 2014-02-13 | 中联重科股份有限公司 | Box-shaped boom section and box-shaped boom of concrete sprayer and concrete sprayer |
| CN104176655A (en) * | 2014-08-27 | 2014-12-03 | 常熟市永固起重设备安装工程有限公司 | High-hardness hoisting arm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |