CN202214991U - Arm of arm support of concrete pump vehicle as well as corresponding arm support and concrete pump vehicle - Google Patents
Arm of arm support of concrete pump vehicle as well as corresponding arm support and concrete pump vehicle Download PDFInfo
- Publication number
- CN202214991U CN202214991U CN 201120293631 CN201120293631U CN202214991U CN 202214991 U CN202214991 U CN 202214991U CN 201120293631 CN201120293631 CN 201120293631 CN 201120293631 U CN201120293631 U CN 201120293631U CN 202214991 U CN202214991 U CN 202214991U
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- arm
- plenum chamber
- main body
- piston
- jib
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Abstract
The utility model discloses an arm of an arm support of a concrete pump vehicle as well as corresponding arm support and concrete pump vehicle. The arm provided by the utility model comprises a hollow box-shaped main body, wherein the box-shaped main body comprises one or more plenum chambers which are closed or can be closed; gas with predetermined pressure can be filled into each plenum chamber to enable the box-shaped main body to stay in a tension state. The arm provided by the utility model has the effect of weight reduction and ensures the overall strength of the arm support at the same time.
Description
Technical field
The utility model relates to a kind of arm and corresponding jib and concrete mixer of concrete pump truck arm.
Background technology
As everyone knows, jib is one of topmost critical component of concrete mixer, and its safety, reliability and advance are the keys of decision pump truck core competitiveness.At present, in the prior art, concrete pump truck arm weight is limited by the restriction of jib intensity, rigidity, under the existing structure condition, can't satisfy the pump truck weight reduction, the requirement that jib increases.The prior art jib all is welded, and weld seam runs through the whole length of case shape main body of jib, because weldquality is difficult to guarantee to cause the pumping vehicle arm rack cracking, lost efficacy into technical barrier.Weld seam has limited the utilization of the material property of high-strength steel sheet.For weight reduction, the bulk strength that jib is left in existing design for is not enough, often produces the jib fracture accident, and when the user in concrete mixer uses jib and object collision took place, jib was very easy to bending and damages.Wanting to increase substantially jib intensity at the prior art framework, almost is not have the rising space.The intensity of the own wt of jib and jib becomes the unity of contradictions body like this, and the lifting of concrete mixer performance receives the containment of this difficult problem thus.
The utility model content
A purpose of the utility model is exactly the arm configuration that a kind of jib will be provided, and it has guaranteed the bulk strength of jib in weight reduction.
Another purpose of the utility model provides a kind of arm configuration of jib, and it has eliminated the weld seam that causes the pumping vehicle arm rack cracking easily, lost efficacy.
An aspect according to the utility model; A kind of arm of jib of concrete mixer is provided; Wherein, Said arm comprises the case shape main body of hollow, and said case shape main body comprises one or more plenum chambers airtight or can be airtight, makes case shape main body be in tensioning state thereby each plenum chamber can charge into the gas of predetermined pressure.
In one embodiment, thus the moulding of said arm solid-drawn does not have weld seam.
In one embodiment, said case shape main body comprises a plurality of said plenum chambers, and these plenum chambers are independently of one another.
In one embodiment, said plenum chamber is the passage along the length direction extension of arm.
In one embodiment, said predetermined pressure is 0.2～40MPa.
In one embodiment, the two ends of said passage are closed with baffle plate, and can be formed with air inlet port on the sidewall of plenum chamber or on the baffle plate.
In one embodiment; Said plenum chamber is provided with at two ends and is used for airtight and piston component air inlet; Said piston component comprises moving piston, intermediate seal piston, the end stop that is provided with from the inside to the outside from the inside of plenum chamber; The sidewall slip joint of wherein moving piston and plenum chamber, said intermediate seal piston is fixed with respect to plenum chamber; Be equipped with on the said moving piston and be communicated to the outside inlet duct of plenum chamber.
In one embodiment; Said inlet duct is the check valve-type inlet duct; Comprise one way valve and valve; First end of the valve plenum chamber internal communication inboard wherein with being positioned at moving piston, the extending through formed through hole in the intermediate seal piston with the first end second opposed end and extend to the outside of intermediate seal piston of valve, thus can in plenum chamber, charge into gas through second end, first end of valve.
In one embodiment; The case shape main body of said arm is provided with variable cross-section and extends muscle; For every joint arm; The length direction of said extension muscle is consistent with the longitudinal direction of the case shape main body of every joint arm, and its cross section along with extend muscle from the near-end of arm towards arm remote extension and diminish, with consistent with the variation tendency of load; And, the extension muscle on the distal arm, the cross section of the extension muscle on the proximal arm is bigger on the whole.
According to another aspect of the utility model, a kind of jib of concrete mixer also is provided, wherein, said jib comprises aforesaid arm.
Another aspect according to the utility model also provides a kind of concrete mixer, and wherein, said concrete mixer comprises aforesaid jib.
The technique effect of the utility model is:
A. the problem that exists to prior art, the utility model can alleviate pumping vehicle arm rack weight effectively.Because weight has only 1/2nd or 1/3rd of traditional jib, and then alleviates the concrete mixer complete vehicle weight greatly,, cut down the consumption of energy and to play important effect improving the pump truck resistance to overturning.
B. the employing of inflatable air chamber has increased the supporting capacity of jib, anti-bending strength, and torsional property, the jib of therefore same weight can be done longlyer, make the jib high resilience, can effectively absorb impact force, not be afraid of bump.
C. draw moulding and cancelled traditional jib case shape main body weld seam, make the jib functional performance not receive the containment of weldquality problem, give full play to the mechanical property of material.Improve the reliability of jib, the no weld seam problem that ftractures is avoided the fracture risk of the security incident that causes of jib.
Description of drawings
Fig. 1 is the simple sketch map of existing concrete pump truck.
Fig. 2 is the longitudinal sectional view according to the single-unit arm of the jib of the utility model.
Fig. 3 is the stereogram according to the single-unit arm of the jib of the utility model.
Fig. 4 and Fig. 5 are " I " among Fig. 2, " II " two-part enlarged diagram.
The specific embodiment
Below in conjunction with the shown preferred nonrestrictive embodiment of accompanying drawing the utility model is described.
Fig. 1 shows the simple sketch map of existing concrete pump truck.As shown in fig. 1, said concrete mixer comprises automobile chassis 100 and by the jib structure of its support.Said jib structure is illustrated as the five joint arms that comprise connection successively in the drawings, is respectively that a joint arm 101, two saves arms 102, three joint arms 103, four save arms 104, five joint arms 105.In addition, said concrete mixer also comprises parts such as known to those skilled in the art pump truck supporting leg 107, turntable 108, amplitude oil cylinder 109, linkage 110.The utility model mainly is the improvement to wherein each joint arm.In other words, the instruction of the ensuing aspect about arm of the utility model can be applied to the arbitrary joint arm in above-mentioned joint arm to the five joint arm.
Fig. 2 schematically show jib a wherein joint arm (it can be arbitrary among the above-mentioned arm 101-105) along its longitudinal direction partial sectional view of dissecing of length direction in other words.Fig. 3 schematically shows the stereogram according to the case shape main body of the arm of another embodiment, has wherein removed some parts at case shape main body two ends, to be clearly shown that plenum chamber wherein.
Shown in Fig. 2 and Fig. 3, be the elongate articles of solid-drawn moulding according to the arm of the utility model, and material is preferably metal for example aluminium alloys, magnesium alloy, titanium alloy, high-tensile structural steel etc.According to the utility model, because arm is through draw forming, so thereby be the weld seam that does not have traditionally of one as the case shape main body of arm main body, form many disadvantages that case shape main body bring through welding thereby eliminated in the prior art.
In addition, be according to another key character of the utility model that the case shape main body of arm is a hollow structure, is formed with one or more plenum chambers in it, said plenum chamber is preferably a plurality of, and independently of one another.Further preferably, said plenum chamber extends along the whole length direction of arm.In this, having illustrated among Fig. 2 along the longitudinal direction of arm is the embodiment of two plenum chambers 9,10 of length direction extension, and having illustrated among Fig. 3 along the longitudinal direction of arm is the embodiment of three plenum chambers 9,10,11 of length direction extension.Because the existence of plenum chamber, reduced the amount of employed metal material, therefore reduced the load that the deadweight owing to arm brings.
Further, for the intensity of compensator arm, the inventor of the utility model charges into the gas of predetermined pressure in each plenum chamber, be preferably air, so that each sidewall of case shape main body all is under the certain force of strain state, thereby guarantees its mechanical strength.In order to realize this point, plenum chamber should be airtight or can be sealed, and be provided with the air inlet port that is used for air inlet.
According to above-mentioned instruction, those skilled in the art should be understood that existing various airtight constructions and intake structure can directly perhaps be used for the plenum chamber of the utility model a little with changing in the prior art.For example, in a preferred embodiment, plenum chamber comes down to along the passage of the longitudinal extension of arm, shown in Fig. 2 and Fig. 3.In unshowned embodiment, airtight for plenum chamber is carried out, the baffle plate welded closed for example can be used in the two ends of this passage; At this moment; In order to realize air inlet, can be formed with air inlet port on the sidewall of plenum chamber or on the baffle plate, and on the air inlet port breather cheek valve can be set alternatively; Thereby can in plenum chamber, charge into the gas of predetermined pressure through external air source, but the gas that does not allow to charge into overflows.Design the thickness of the sidewall of brachium especially and arm according to different arms, said predetermined pressure for example can be 0.2～40MPa.Said predetermined pressure can be measured with any means well known by persons skilled in the art, for example, can come gaging pressure at the mounted on surface induction pressure table of case shape main body.
A kind of concrete airtight and intake structure has been shown in Fig. 2, Fig. 4, Fig. 5.As shown in Figure 2, in this concrete embodiment, said plenum chamber 9,10 is provided with the piston component that is used for airtight and air inlet at two ends, shown in " I ", " II " two parts among Fig. 2.Fig. 4 and Fig. 5 show the enlarged diagram of " I " part and " II " part respectively.
As shown in Figure 4, be provided with moving piston 3, intermediate seal piston 2, end stop 1 from the inside to the outside at first end of plenum chamber 9,10, in the inside of plenum chamber.The sidewall slip joint of moving piston 3 and plenum chamber preferably is provided with seal 4 between the sidewall of moving piston 3 and plenum chamber, thus with the sidewall of plenum chamber slip joint hermetically.As shown in Figure 5, similarly, in the moving piston 3 ' of being provided with from the inside to the outside of plenum chamber 9,10, intermediate seal piston 2 ', end stop 1 ' with the first end second opposed end place, in the inside of plenum chamber.Likewise, the sidewall slip joint of moving piston 3 ' and plenum chamber.And, equally preferably, between the sidewall of moving piston 3 ' and plenum chamber, be provided with seal 4 ' so that the sidewall of moving piston 3 ' and plenum chamber slip joint hermetically.
On intermediate seal piston 2,2 ', the steam vent (not shown) can be set, with when moving piston 3,3 ' under the effect of gas pressure in the plenum chamber (shown in arrow A) when move in the end emptying intermediate seal piston 2,2 ' and moving piston 3, gas between 3 '.Intermediate seal piston significant feature provides the backstop of opposed piston 3, and in addition, it also can play the effect of enhanced leaktightness simultaneously.For this reason, the intermediate seal piston should be fixed with respect to the plenum chamber of arm, and modes such as this can for example weld through mode well known in the art, bolt connection realize.
According to illustrated this preferred and nonrestrictive embodiment, inflation is to realize through the inlet duct that is similar to the check valve-type that is used on the tire to inflate in plenum chamber.But those skilled in the art will be understood that the utility model for the not special restriction of inflation mode, and other aerating positions also are fine with structure, as long as can make the gas that charges into certain pressure in the plenum chamber with being sealed.
Below in conjunction with the embodiment of Fig. 4 the inlet duct of said check valve-type is described.As shown in Figure 4, the inlet duct of this check valve-type is installed on the moving piston 3, and it comprises one way valve 5 and valve 6.First end of valve 6 and the plenum chamber internal communication that is positioned at moving piston 3 inboards; The extending through formed through hole 21 in the intermediate seal piston 2 with the first end second opposed end and extend to the outside of piston 2 of valve 6, thus can be so that in plenum chamber, charge into gas through second end, first end.Said one way valve 5 allows gas to get into plenum chamber along arrow B through valve, but stops the opposite direction of gas edge and arrow B to leave plenum chamber.
In illustrated this preferred implementation, said valve 6 is an elongate articles, and the length direction of this charging connector is preferably consistent with the axis direction of plenum chamber.In the process of plenum chamber being inflated through inlet duct, moving piston 3 will be to the motion of the end of plenum chamber, and the through hole that corresponding to said valve form in the intermediate seal piston this moment allows valve 6 to pass 2 motions of intermediate seal piston.
Those skilled in the art should be understood that, such inlet duct can be installed in arbitraryly in the moving piston 3,3 ' to be gone up or install simultaneously.
Further, in order to increase sealing effectiveness, said end stop 1 can comprise an end packed-piston 11.
When mounted, pack in regular turn the most inboard moving piston 3, intermediate seal piston 2, and can after charging into satisfactory gas, pack into end stop 1 or end packed-piston 11.
Aforesaid plenum chamber and two ends piston have been formed the airtight cavity of inflatable balloon-like, the airtight cavity of this inflatable balloon-like also can in be lined with rubber pneumatic bag, plastic gas bag or metal bellows.
Another key character of the utility model is, variable cross-section can be set on the case shape main body of arm extend muscle 12.The effect of said extension muscle 12 is described below in conjunction with Fig. 1.At this, for ease of describing, be called proximal arm from the low arm of automobile chassis (promptly bearing the bigger arm of load, for example a joint arm 101), be called distal arm from automobile chassis arm far away (promptly bearing the less arm of load generally, for example five joint arms 105).Here " near-end " and " far-end " all are comparatively speaking, and for example, a joint arm 101 is a proximal arm with respect to two joint arms 102, and two joint arms 102 then are proximal arm with respect to three joint arms 103.In addition, every joint arm all has relative two ends, for ease of describing, will be called " near-end " near that end of automobile chassis (promptly near that end of the proximal arm) respectively, with being called " far-end " away from that end of automobile chassis (promptly near that end of the distal arm) relatively.The far-end of minor details arm (for example five joint arms 105) is exactly that the far-end of whole jib is terminal in other words.
At first, it will be apparent to those skilled in the art that from the near more load that arm bore of automobile chassis 100 big more.For example, a joint arm 101 of near-end wants big compared to five loads that born of joint arms 105 of end, and therefore accordingly should the joint arm required intensity is also bigger.Variable cross-section extends muscle 12 and is provided with for the requirement of satisfying this intensity.According to the utility model; For every joint arm; The length direction of said extension muscle 12 is consistent with the longitudinal direction of the case shape main body of every joint arm, and its cross section along with extend muscle 12 from the near-end of arm towards arm remote extension and diminish, with consistent with the variation tendency of load.Extension muscle on the distal arm, the cross section of the extension muscle on the proximal arm is bigger on the whole, to satisfy bigger requirement of strength.
Claims (11)
1. the arm of the jib of a concrete mixer; It is characterized in that; Said arm comprises the case shape main body of hollow, and said case shape main body comprises one or more plenum chambers airtight or can be airtight, makes case shape main body be in tensioning state thereby each plenum chamber can charge into the gas of predetermined pressure.
2. arm as claimed in claim 1 is characterized in that, thereby the moulding of said arm solid-drawn does not have weld seam.
3. arm as claimed in claim 1 is characterized in that, said case shape main body comprises a plurality of said plenum chambers, and these plenum chambers are independently of one another.
4. arm as claimed in claim 1 is characterized in that, said plenum chamber is the passage along the length direction extension of arm.
5. arm as claimed in claim 1 is characterized in that, said predetermined pressure is 0.2～40MPa.
6. arm as claimed in claim 4 is characterized in that, the two ends of said passage are closed with baffle plate, and can be formed with air inlet port on the sidewall of plenum chamber or on the baffle plate.
7. arm as claimed in claim 4; It is characterized in that; Said plenum chamber is provided with at two ends and is used for airtight and piston component air inlet; Said piston component comprises moving piston, intermediate seal piston, the end stop that is provided with from the inside to the outside from the inside of plenum chamber, the sidewall slip joint of wherein moving piston and plenum chamber, and said intermediate seal piston is fixed with respect to plenum chamber; Be equipped with on the said moving piston and be communicated to the outside inlet duct of plenum chamber.
8. arm as claimed in claim 7; It is characterized in that; Said inlet duct is the check valve-type inlet duct, comprises one way valve and valve, wherein first end of valve and the plenum chamber internal communication that is positioned at moving piston inboard; The extending through formed through hole in the intermediate seal piston with the first end second opposed end and extend to the outside of intermediate seal piston of valve, thus can in plenum chamber, charge into gas through second end, first end of valve.
9. arm as claimed in claim 1; It is characterized in that; The case shape main body of said arm is provided with variable cross-section and extends muscle, and for every joint arm, the length direction of said extension muscle is consistent with the longitudinal direction of the case shape main body of every joint arm; And its cross section along with extend muscle from the near-end of arm towards arm remote extension and diminish, with consistent with the variation tendency of load; And, the extension muscle on the distal arm, the cross section of the extension muscle on the proximal arm is bigger on the whole.
10. the jib of a concrete mixer is characterized in that, said jib comprises like each described arm in the aforementioned claim.
11. a concrete mixer is characterized in that said concrete mixer comprises jib as claimed in claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120293631 CN202214991U (en) | 2011-08-15 | 2011-08-15 | Arm of arm support of concrete pump vehicle as well as corresponding arm support and concrete pump vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120293631 CN202214991U (en) | 2011-08-15 | 2011-08-15 | Arm of arm support of concrete pump vehicle as well as corresponding arm support and concrete pump vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202214991U true CN202214991U (en) | 2012-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120293631 Expired - Fee Related CN202214991U (en) | 2011-08-15 | 2011-08-15 | Arm of arm support of concrete pump vehicle as well as corresponding arm support and concrete pump vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202214991U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900235A (en) * | 2012-09-19 | 2013-01-30 | 三一重工股份有限公司 | Material distribution arm support, method for manufacturing material distribution arm support, and pumping equipment |
| CN102943566A (en) * | 2011-08-15 | 2013-02-27 | 徐工集团工程机械股份有限公司 | Cantilever of cantilever crane of concrete pump, corresponding cantilever crane and concrete pump |
| CN102953675A (en) * | 2012-11-22 | 2013-03-06 | 四川省宜宾普什重机有限公司 | Engineering machinery large arm with gas storage structure |
| CN103470043A (en) * | 2012-06-06 | 2013-12-25 | 湖南晟通科技集团有限公司 | Boom manufacturing method, boom manufactured by using method and pump truck using boom |
-
2011
- 2011-08-15 CN CN 201120293631 patent/CN202214991U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943566A (en) * | 2011-08-15 | 2013-02-27 | 徐工集团工程机械股份有限公司 | Cantilever of cantilever crane of concrete pump, corresponding cantilever crane and concrete pump |
| CN102943566B (en) * | 2011-08-15 | 2015-09-09 | 徐州徐工施维英机械有限公司 | The arm of concrete pump truck arm and corresponding jib and concrete mixer |
| CN103470043A (en) * | 2012-06-06 | 2013-12-25 | 湖南晟通科技集团有限公司 | Boom manufacturing method, boom manufactured by using method and pump truck using boom |
| CN103470043B (en) * | 2012-06-06 | 2016-12-14 | 湖南晟通科技集团有限公司 | Jib manufacture method, with the jib of the method manufacture and the pump truck that uses this jib |
| CN102900235A (en) * | 2012-09-19 | 2013-01-30 | 三一重工股份有限公司 | Material distribution arm support, method for manufacturing material distribution arm support, and pumping equipment |
| CN102900235B (en) * | 2012-09-19 | 2015-08-12 | 三一汽车制造有限公司 | The manufacture method of a kind of distributing arm support, distributing arm support and pumping equipment |
| CN102953675A (en) * | 2012-11-22 | 2013-03-06 | 四川省宜宾普什重机有限公司 | Engineering machinery large arm with gas storage structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XUZHOU XUGONG SCHWING MACHINERY CO., LTD. Free format text: FORMER OWNER: XCMG CONSTRUCTION MACHINERY CO., LTD. Effective date: 20130819 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130819 Address after: 221004 No. 29, Peach Road, Xuzhou economic and Technological Development Zone, Jiangsu, Xuzhou Patentee after: XCMG Schwing Machinery Co., Ltd. Address before: 221004 No. 19 Peach Road, Xuzhou Economic Development Zone, Jiangsu, China Patentee before: XCMG Construction Machinery Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 Termination date: 20160815 |