CN102587668A - Tensile beam, arm support and pump truck - Google Patents
Tensile beam, arm support and pump truck Download PDFInfo
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- CN102587668A CN102587668A CN201210061720.XA CN201210061720A CN102587668A CN 102587668 A CN102587668 A CN 102587668A CN 201210061720 A CN201210061720 A CN 201210061720A CN 102587668 A CN102587668 A CN 102587668A
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- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
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- 230000003247 decreasing effect Effects 0.000 abstract 2
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- 230000000694 effects Effects 0.000 description 12
- 230000007935 neutral effect Effects 0.000 description 5
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- 230000009286 beneficial effect Effects 0.000 description 2
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- 239000003562 lightweight material Substances 0.000 description 2
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Abstract
The invention provides a tensile beam comprising a beam body and at least one stay cable arranged on the beam body, wherein the stay cable is arranged on the tensioned surface of the beam body along the axial direction of the beam body and is provided with a pre-tightening force. The invention also provides an arm support and a pump truck comprising the arm support, wherein the arm support comprises at least one arm segment manufactured by adopting the tensile beam. Through the technical scheme of the invention, the tension born by the beam body can be increased; on the premise that the length and the loading capacity of the arm support can be guaranteed, the thickness of plates of the arm support can be decreased; therefore, the flexibility of motions of the arm support is improved, the manufacturing material is decreased, and the manufacturing difficulty is reduced.
Description
Technical field
The present invention relates to the plant equipment field, in particular to a kind of tension beam, adopt jib that this said tension beam processes and pump truck with this jib.
Background technology
Concrete pump truck arm belongs to cantilever beam structure, needs level to overhang during operation, and cantilever beam structure will bear huge moment of flexure, then bears huge pulling force on the neutral surface of semi girder.Therefore, need to adopt and bear tensile stress, to guarantee the strength and stiffness of jib than heavy-gauge sheeting.So the sheet material of existing jib is generally thicker, not only increases jib weight, reduced the flexibility of jib action, go back waste material, increased manufacture difficulty.In addition, the jib own wt has further constituted jib load, and the general arrangement that the heavy-gauge sheeting jib structure will certainly the restricted arm frame system increases design difficulty.If the jib gross weight is excessive even can influence the global design that pump truck etc. has jib machinery, seriously restricted the development of overlength jib technology.
Therefore, need a kind of new tension beam and jib structure, can under the prerequisite that guarantees jib length and lifting capacity, reduce the thickness of jib sheet material, thereby improve the flexibility of jib action, reduce manufactured materials, reduce manufacture difficulty.
Summary of the invention
For the technical problems such as huge pulling force materials used is many because of bearing, weight big, action is dumb, manufacture difficulty is big that solve in the prior art jib perhaps one of at least.
The invention provides a kind of tension beam, comprising: the beam body be arranged at least one drag-line on the said beam body; Said drag-line is along the tension face that is axially set in said beam body of said beam body; Said drag-line is provided with pretightning force.
Above-mentioned tension beam provided by the invention is because of axially being provided with drag-line at tension face; And be provided with pretightning force in the drag-line; Thereby can make drag-line partly bear the pulling force that said beam body receives; Thereby the pulling force that under the situation that does not increase the beam body dimension, the beam body is born is bigger, perhaps bears under the situation of same pulling force littler, economical with materials that the beam body can be done.
In technique scheme, preferably, also be provided with tensioning apparatus on the said drag-line, the said pretightning force of the said drag-line of said tensioning apparatus scalable.In this technical scheme; Said tensioning apparatus is set on said drag-line, can regulates the pretightning force of said drag-line according to the actual requirements; Can avoid pretightning force too small and make said drag-line effect bad even lost efficacy, and avoid pretightning force excessive and influence application life of said drag-line.
In technique scheme, preferably, said tensioning apparatus is the spiral tensioning apparatus;
Said spiral tensioning apparatus comprises: two clamping parts, two connecting bolts and a tensioning nut; Said clamping part is fixed on the said connecting bolt, and said connecting bolt is fixedly connected with said drag-line, and said tensioning nut and two said connecting bolt bolts turn the said pretightning force that said nut or said connecting bolt can be provided with said drag-line.In this technical scheme, the spiral tensioning apparatus of employing, simple in structure, be easy to realize, safe and reliable; On two connecting bolts clamping part is set, can guarantees when turning said nut that said connecting bolt do not follow rotation, so make said drag-line with rotate.
Further, two said connecting bolts are arranged at the two ends of said tensioning nut; Said tensioning nut is provided with two sections screw threads with two said connecting bolt bolts, said two sections screw threads in the opposite direction; Turning said nut can drive said two connecting bolts and move round about.Adopt reverse thread to realize two connecting bolt move toward one another, simple in structure; Can certainly only turn the clamping part of nut one end, and then turn said connecting bolt, also can realize the purpose of tension cable.
In technique scheme, preferably, be provided with first supporting seat at an end of said beam body, be provided with second supporting seat at the other end of said beam body, said drag-line is installed between said first supporting seat and said second supporting seat.In this technical scheme; Be provided with said first supporting seat and said second supporting seat at the two ends of said beam body; Use between said first supporting seat and said second supporting seat of said drag-line setting to connect, than directly on the beam body, connect fixing said drag-line more firmly, reliable, convenient.
In technique scheme, preferably, between said first supporting seat and said second supporting seat, also be provided with the 3rd supporting seat, said the 3rd supporting seat supports said drag-line.In this technical scheme, between said first supporting seat and said second supporting seat, said the 3rd supporting seat is set and supports said drag-line, produce angle thereby make between said drag-line and two bodies, make said drag-line share bigger pulling force.
Preferably, the adjustable height of the strong point of said the 3rd supporting seat.The strong point adjustable height of the 3rd supporting seat both can have been regulated said drag-line from the distance of said beam body, give full play to the effect that said drag-line bears tensile stress, had optimized drag-line is shared pulling force to said beam body effect; The pulling force that also can distribute drag-line and beam body to be born through the height of regulating said the 3rd supporting seat makes both stressed optimum states that reaches.
Further; Said the 3rd supporting seat comprises that two gripper shoes and that are relatively arranged on the said beam body are set up on said two gripper shoes, the back shaft of the said drag-line of support, and these two gripper shoe upper edge short transverses offer a plurality of locating holes that are used to accommodate the back shaft end respectively.This structure through the cooperation of adjustment back shaft end and different locating holes, promptly can be adjusted the height of back shaft, realizes the adjustment of strong point height.Perhaps:
Said the 3rd supporting seat comprises a holder and a sliding seat; Said holder is fixed on the said beam body; Said sliding seat and said holder are slidingly connected, and can on a plurality of predeterminated positions of arranging along short transverse, engage with said holder, and said sliding seat supports said drag-line.This structure through the height of adjustment sliding seat, just can be adjusted the height of the strong point of the 3rd supporting seat.
In technique scheme, preferably, said first supporting seat is provided with first back shaft, and said second supporting seat is provided with second back shaft; The two ends of said drag-line are separately fixed on said first back shaft and said second back shaft; All equally spaced be provided with the drag-line groove on said first back shaft and second back shaft, said drag-line is wrapped in the said drag-line groove.In this technical scheme, used drag-line groove is fixed the direction of said drag-line, can avoid the inclination of said drag-line, influences the component effect of said drag-line.
In technique scheme, preferably, the two ends of said drag-line are fixed in the said beam body, and the part between the two ends of said drag-line is supported by the external surface of said beam body or the 3rd supporting seat that is positioned at the external surface of said beam body.This is the fixing another kind of mode of drag-line, and promptly the two ends of drag-line can be arranged in the said beam body, can realize goal of the invention of the present invention equally.
The present invention also provides a kind of jib, comprises the arm joint of at least one joint, and the said arm joint of at least one joint adopts the described tension beam of above-mentioned arbitrary technical scheme to process.
In this technical scheme, be provided with pretightning force because of having used in said drag-line and the drag-line, then, the beam body of arm joint can partly carry said pulling force when bearing pulling force; Shared the suffered part pulling force of beam body of said arm joint, thereby reduced the suffered pulling force of said beam body, reduced of the requirement of said beam body sheet metal thickness; Saved sheet material; Reduce cost, and reduced the weight of said jib, reduced tilting moment; If jib according to the invention is applied to pump truck, can so that pump truck bridge is long realizes than being easy to more; And owing to reduced the suffered pulling force of said beam body, carry so reduced the casing of said jib, improved the stability of carrying and the life-span of jib; In addition,,, reduced cost of production, improved efficient so also reduced the difficulty of said jib processing and manufacturing owing to reduced the thickness of sheet material.
In technique scheme, preferably, the beam body of said arm joint comprises upper plate and lower plate, and said upper plate or said lower plate are born pulling force.Place and said upper plate when being in top when said beam body cantilever, then said upper plate bears pulling force; When said beam body rotation was in top above the said lower plate of 90 degree, then lower plate was born pulling force.
Preferably, drag-line is axially disposed within the inboard and/or the outside of said upper plate; Perhaps simultaneously, be axially disposed within the inboard and/or the outside of said lower plate separately.In this technical scheme; Said upper plate setting that said drag-line is pressed close to be drawn or the said lower plate of being drawn are provided with; To guarantee that said drag-line is arranged on more than the neutral surface of said beam body, can, said beam body make said rope play the effect of sharing this pulling force when receiving pulling force like this.When pressing close to the said drag-line of interior arranged outside of said lower plate; When to such an extent as to the very big said lower plate of the said arm joint anglec of rotation is positioned at the top of said upper plate; The drag-line that is arranged on the outside in the said lower plate then can play the effect that part is born the suffered pulling force of said beam body, makes the scope of application of said jib wider.
In technique scheme, preferably, the two ends of said drag-line are fixed in the said beam body, and the part between the two ends of said drag-line is supported by the external surface of said beam body or the 3rd supporting seat that is positioned at the external surface of said beam body.This is another mounting means of drag-line, can realize goal of the invention of the present invention equally.
In technique scheme, preferably, said jib comprises the said arm joint of more piece, and adjacent said arm joint is hinged.The middle arm joint of jib of the present invention because of can bear big pulling force and beam body materials few, in light weight, rotate flexibly, be particularly suitable for the jib of multi-arm joint, be used in the jib of single oil cylinder joint composition and can demonstrate fully advantage of the present invention.
In technique scheme, preferably, said drag-line adopts the composite material of macromolecule organic material or inorganic material or macromolecule organic material and inorganic material to process.For example can be carbon fiber rope, alloy rope or wire rope etc., all satisfy requirement of the present invention as long as have the drag-line that tension and lightweight material make.
In sum, through the technical scheme of above-mentioned jib provided by the invention, use drag-line to share the suffered pulling force of beam body of arm joint; Reduced the moment of flexure of beam body, reduced of the requirement of said beam body, saved sheet material sheet metal thickness; Reduce cost, and reduced the weight of said jib, reduced tilting moment; Above-mentioned said jib is applied to pump truck, can realizes than being easy to more so that the bridge of pump truck is long; And owing to reduced the suffered pulling force of said beam body, carry so reduced the casing of said jib, improved the stability of carrying and the life-span of jib; In addition,,, reduced cost of production, improved efficient so also reduced the difficulty of said jib processing and manufacturing owing to reduced the thickness of sheet material.
The present invention also provides a kind of pump truck, comprises the described jib of above-mentioned arbitrary technical scheme, has whole beneficial effects of above-mentioned jib, repeats no more.
Description of drawings
Fig. 1 is the structural representation according to tension beam one embodiment according to the invention;
Fig. 2 is the structural representation according to tensioning apparatus one embodiment according to the invention;
Fig. 3 is that the master that arm described in the jib according to the invention saves first embodiment looks sketch map;
Fig. 4 is the schematic top plan view of the joint of arm shown in Fig. 3;
Fig. 5 is the A-A cross-sectional schematic among Fig. 3;
Fig. 6 is that the master that arm described in the jib according to the invention saves second embodiment looks sketch map;
Fig. 7 is the schematic top plan view of the joint of arm shown in Fig. 6;
Fig. 8 is that the master that arm described in the jib according to the invention saves the 3rd embodiment looks sketch map;
Fig. 9 is that the master that arm described in the jib according to the invention saves the 4th embodiment looks sketch map;
Figure 10 is that the master that arm described in the jib according to the invention saves the 5th embodiment looks sketch map;
Figure 11 is that the master that arm described in the jib according to the invention saves the 6th embodiment looks sketch map.
The specific embodiment
In order more to be expressly understood above-mentioned purpose of the present invention, feature and advantage, the present invention is further described in detail below in conjunction with the accompanying drawing and the specific embodiment.
Set forth a lot of details in the following description so that make much of the present invention, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of following disclosed specific embodiment.
Fig. 1 is the structural representation according to tension beam one embodiment according to the invention; Fig. 2 is the structural representation according to tensioning apparatus one embodiment according to the invention.
As shown in Figure 1, the invention provides a kind of tension beam, comprising: beam body 1 be arranged at least one drag-line 2 on the said beam body 1; Said drag-line 2 is along the tension face that is axially set in said beam body 1 of said beam body 1; Said drag-line 2 is provided with pretightning force.
The above-mentioned tension beam that present embodiment provides axially is provided with drag-line because of the tension face place at the beam body; And be provided with pretightning force in the drag-line; Thereby can make drag-line partly bear the pulling force that said beam body receives; Thereby the pulling force that under the situation that does not increase the beam body dimension, the beam body is born is bigger, perhaps bears under the situation of same pulling force littler, economical with materials that the beam body can be done.
Preferably, also be provided with tensioning apparatus 3 on the said drag-line 2, the said pretightning force of the said drag-line 2 of said tensioning apparatus 3 scalable.The mode of employing present embodiment is provided with the pretightning force of drag-line; Can be according to the actual requirements; Regulate the pretightning force of said drag-line, can avoid pretightning force too small and make said drag-line effect bad even lost efficacy, and avoid pretightning force excessive and influence application life of said drag-line.Certainly, the pretightning force of drag-line also can adopt other modes to be provided with.
Preferably, as shown in Figure 2, said tensioning apparatus 3 is the spiral tensioning apparatus.
Said spiral tensioning apparatus comprises: two clamping parts 31, two connecting bolts 32 and a tensioning nut 33; Said clamping part 31 is fixed on the said connecting bolt 32; Said connecting bolt 32 is fixedly connected with said drag-line 2; Said tensioning nut 33 and two said connecting bolt 32 bolts turn the said pretightning force that said nut 33 or said connecting bolt 32 can be provided with said drag-line 2.In this technical scheme, the spiral tensioning apparatus of employing, simple in structure, be easy to realize, safe and reliable; Be set with clamping part on two connecting bolts, be convenient to turn said connecting bolt.
Further, two said connecting bolts 32 are arranged at the two ends of said tensioning nut 33, be provided with on the said tensioning nut 33 in order to two sections screw threads of two said connecting bolt 32 bolts, said two sections screw threads in the opposite direction.Adopt two sections screw threads in the opposite direction to realize two connecting bolt move toward one another, realized that simply, easily two connecting bolts move round about, thereby adjust and be provided with the pretightning force of drag-line easily; Can certainly only turn the clamping part of nut one end, and then turn said connecting bolt, also can realize adjusting and be provided with the purpose of the pretightning force of drag-line.
Fig. 3 is that the master that arm described in the jib according to the invention saves first embodiment looks sketch map; Fig. 4 is the schematic top plan view of the joint of arm shown in Fig. 3; Fig. 5 is the A-A cross-sectional schematic among Fig. 3; Fig. 6 is that the master that arm described in the jib according to the invention saves second embodiment looks sketch map; Fig. 7 is the schematic top plan view of the joint of arm shown in Fig. 6; Fig. 8 is that the master that arm described in the jib according to the invention saves the 3rd embodiment looks sketch map; Fig. 9 is that the master that arm described in the jib according to the invention saves the 4th embodiment looks sketch map; Figure 10 looks sketch map according to the master that arm described in the jib according to the invention saves the 5th embodiment; Figure 11 is that the master that arm described in the jib according to the invention saves the 6th embodiment looks sketch map.
To shown in Figure 11, the invention provides a kind of jib like Fig. 3, Fig. 4, Fig. 6, comprise at least one joint arm joint, the said arm joint of at least one joint adopts above-mentioned tension beam to process.
In this technical scheme, use said drag-line 2 to carry the part pulling force of the beam body 1 of said arm joint, shared the suffered pulling force of the said beam body of part; Thereby reduce the suffered pulling force of said beam body, reduced of the requirement of the beam body of said arm joint, saved sheet material sheet metal thickness; Reduce cost, and reduced the weight of said jib, reduced tilting moment; Said jib is applied to pump truck, can realizes than being easy to more so that the bridge of pump truck is long; And,, the stability of carrying and the life-span of jib have been improved so reduced the carrying of said jib owing to reduced the suffered pulling force of beam body of said arm joint; In addition,,, reduced cost of production, improved efficient so also reduced the difficulty of said jib processing and manufacturing owing to reduced the thickness of sheet material.
Preferably, as shown in Figure 5, the beam body 1 of said arm joint comprises upper plate 11 and lower plate 12; Said upper plate 11 or said lower plate 12 are born pulling force.Place and said upper plate when being in top when said beam body cantilever, then said upper plate bears pulling force; When said beam body rotation was in top above the said lower plate of 90 degree, then lower plate was born pulling force.
Preferably, drag-line 2 is axially disposed within the surface in said upper plate 11 inboards and/or the outside; Also can perhaps be axially disposed within the surface in said lower plate 12 inboards and/or the outside separately simultaneously.In this technical scheme; The said upper plate inboard that said drag-line is pressed close to be drawn and/or the surface in the outside are provided with or the said lower plate inboard of being drawn and/or the surface in the outside are provided with; To guarantee that said drag-line is arranged on more than the neutral surface of said beam body; Can, said beam body make said rope play the effect of sharing this pulling force when receiving pulling force like this; Surface described herein comprises the contacting of drag-line and surface, also comprises with all places such as passing said surface that do not contact, also comprises on surface and concerning.
The set-up mode of said drag-line 2 has a variety of, for example can be arranged on the top of said upper plate 11, also can be arranged on the below of upper plate, but must above the neutral surface of said beam body, so just can share the suffered pulling force of said beam body.In addition; In practice; The anglec of rotation of arm joint has a lot of situation, may rotate very big angle, to such an extent as to said lower plate 12 is positioned at the top of said upper plate 11; If be provided with said drag-line 2 at said neutral surface near the place of said lower plate 12 then can share the suffered pulling force of beam body of said arm joint equally this moment, make the scope of application of said arm joint wider.To shown in Figure 7, said drag-line 2 is axially disposed within the outside of said upper plate 11 external surfaces like Fig. 3 and Fig. 4, Fig. 6; Like Figure 10 and shown in Figure 11, said drag-line 2 is axially disposed within the inboard of said upper plate 11 inner surfaces; Perhaps shown in figure 11, drag-line 2 is arranged on inboard and the inboard of lower plate 12 inner surfaces of the inner surface of upper plate 11 simultaneously.Certainly, said drag-line 1 also can be arranged on the inner surface and the outer surface of said upper plate 11 and said lower plate 12 simultaneously.In other embodiments, like Fig. 8 and shown in Figure 9, the two ends of drag-line 2 can be fixed in the beam body 1, and the part between the two ends of drag-line 2 is positioned at the outside of the external surface of upper plate 11 and/or lower plate 12, is supported by the external surface of upper plate 11 and/or lower plate 12.In this embodiment, can offer through hole, make the two ends of drag-line 2 can pass through hole respectively, get in the beam body 1 at the two ends of upper plate 11 and/or lower plate 12.
Preferably; Like Fig. 3 and Fig. 4, Fig. 6 to shown in Figure 11; End at the said beam body 1 of said arm joint is provided with first supporting seat 41, is provided with second supporting seat 42 at the other end of said beam body 1, and said drag-line 2 is installed between said first supporting seat 41 and said second supporting seat 42.In this technical scheme; Two ends at the beam body 1 of said arm joint are provided with said first supporting seat 41 and said second supporting seat 42; Use said first supporting seat 41 at 2 pairs of said beam bodies of said drag-line, 1 two ends to be connected with said second supporting seat 42, fixing more convenient, reliable than directly on beam body 1, connecting.
Preferably, like body 3 and Fig. 4, Fig. 6 and shown in Figure 7, said first supporting seat 41 is provided with first back shaft 411, and said second supporting seat 42 is provided with second back shaft 421; The two ends of said drag-line 2 are separately fixed on said first back shaft 411 and said second back shaft 421; All equally spaced be provided with the drag-line groove on said first back shaft 411 and second back shaft 421, said drag-line 2 is wrapped in the said drag-line groove.In this technical scheme, used drag-line groove is fixed the direction of said drag-line 2, can avoid the inclination of said drag-line 2, thereby influences the component effect of said drag-line 2.
Preferably, to shown in Figure 11, between said first supporting seat 41 and said second supporting seat 42, also be provided with the 3rd supporting seat 43 like Fig. 9, said the 3rd supporting seat 43 supports said drag-line 2.。Through the 3rd supporting seat 43 is set, produce angle thereby make between said drag-line and two bodies, make said drag-line share bigger pulling force, can further optimize the effect that 2 pairs of said beam bodies 1 of drag-line are shared pulling force.Further, the adjustable height of the strong point of said the 3rd supporting seat 43.In one embodiment; The 3rd supporting seat 43 comprises that two gripper shoes and on the external surface that is relatively arranged on upper plate 11 are set up on said two gripper shoes, are used for the back shaft of support cable 2, and these two gripper shoe upper edge short transverses offer a plurality of locating holes that are used to accommodate the back shaft end respectively.Through the back shaft two ends are inserted in the locating hole of differing heights, can regulate the strong point height of the 3rd supporting seat 43.In other embodiments, the 3rd supporting seat 43 also can comprise a holder and a sliding seat, and holder is fixed on the external surface of upper plate 11, and sliding seat and holder are slidingly connected, and can on a plurality of predeterminated positions of arranging along short transverse, engage with holder.Sliding seat is used for support cable 2, through regulating the clamped position of sliding seat on holder, can realize the adjusting of the strong point height of the 3rd supporting seat 43.Certainly, the structure of adjustable for height the 3rd supporting seat 43 of the strong point is not limited to two kinds of above-mentioned structures, also can be other forms, as long as strong point adjustable height.In this technical scheme; Adjustable for height said the 3rd supporting seat 43 is set between said first supporting seat 41 and said second supporting seat 42; Both can regulate the distance of said drag-line 2 from said beam body 1; Give full play to the effect that said drag-line 2 bears tensile stress, optimized the effect that drag-line 2 pairs of said beam bodies 1 are shared pulling force; The pulling force that also can distribute drag-line 2 and beam body 1 to be born through the height of regulating said the 3rd supporting seat 43 makes both stressed optimum states that reaches.Preferably; As shown in Figure 8, said first supporting seat 41 is positioned at beam body 1 with said second supporting seat 42, and said drag-line 2 is arranged on the external surface of upper plate 11; Perhaps as shown in Figure 9; Said first supporting seat 41 is positioned at beam body 1 with said second supporting seat 42, and said the 3rd supporting seat 43 is arranged on the external surface of upper plate 11, and drag-line 2 is fixed on first supporting seat 41 and second supporting seat 42 through the 3rd supporting seat two ends.
Preferably, said jib comprises the said arm joint of more piece, and adjacent said arm joint is hinged.The middle arm joint of jib of the present invention because of can bear big pulling force and beam body materials few, in light weight, rotate flexibly, be particularly suitable for the jib of multi-arm joint, be used in the jib of single oil cylinder joint composition and can demonstrate fully advantage of the present invention.
Preferably, preferably, said drag-line 2 adopts the composite material of macromolecule organic material or inorganic material or macromolecule organic material and inorganic material to process.For example can be carbon fiber rope, alloy in lightweight rope or wire rope etc., all satisfy requirement of the present invention as long as have the drag-line that tension and lightweight material make.
Preferably, to shown in Figure 11, said drag-line 2 is provided with tensioning apparatus 3, the said pretightning force of the said drag-line 2 of said tensioning apparatus 3 scalable like Fig. 6.Preferably, this tensioning apparatus 3 can adopt above-mentioned spiral tensioning apparatus.
The described jib of the above-mentioned arbitrary embodiment of the present invention is applied to pump truck, promptly obtains the embodiment of pump truck according to the invention, this pump truck has whole beneficial effects of above-mentioned jib, repeats no more.
Briefly explain below in conjunction with the specific embodiment of accompanying drawing technical scheme according to the invention:
Embodiment one:
Like Fig. 3, Fig. 4 and shown in Figure 5; Two ends above the upper plate 11 of the beam body 1 that arm saves are provided with first supporting seat 41 and second supporting seat 42 respectively; Between first supporting seat 41 and second supporting seat 42 said drag-line 2 is set, and when drag-line 2 is installed, certain pretightning force is set.
On first supporting seat 41 and second supporting seat 42, be respectively arranged with first back shaft 411 and second bolster 421, drag-line 2 is arranged on first back shaft 411 and second bolster 421.
Embodiment two:
Like Fig. 6, Fig. 7 and shown in Figure 5; Two ends above the upper plate 11 of the beam body 1 that arm saves are provided with first supporting seat 41 and second supporting seat 42 respectively; Drag-line 2 is arranged between first supporting seat 41 and second supporting seat 42; And when drag-line 2 is installed, certain pretightning force is set, and also on drag-line 2, be provided with tensioning apparatus 3, can regulate the pretightning force on the drag-line 2 easily.
On first supporting seat 41 and second supporting seat 42, be respectively arranged with first back shaft 411 and second bolster 421, drag-line 2 is arranged on first back shaft 411 and second bolster 421.
Embodiment three:
Like Fig. 8 and shown in Figure 5; Two ends on the inner surface top of the side plate 13 of the beam body 1 of arm joint are provided with first supporting seat 41 and second supporting seat 42 respectively; Drag-line 2 is arranged between first supporting seat 41 and second supporting seat 42, and passes upper plate 11, and when drag-line 2 is installed, certain pretightning force is set; On drag-line 2, be provided with tensioning apparatus 3, can regulate the pretightning force on the drag-line 2 easily.
Embodiment four:
Like Fig. 9 and shown in Figure 5; Two ends on the inner surface top of the side plate 13 of the beam body 1 of arm joint are provided with first supporting seat 41 and second supporting seat 42 respectively; Drag-line 2 is arranged between first supporting seat 41 and second supporting seat 42, and passes upper plate 11, and when drag-line 2 is installed, certain pretightning force is set; And on drag-line 2, be provided with tensioning apparatus 3, can regulate the pretightning force on the drag-line 2 easily.
In addition, above upper plate 11, also be provided with the 3rd supporting seat 43, support said drag-line 2, and make drag-line 2 and upper plate 1 at an angle, can make drag-line 2 more effectively share the suffered pulling force of beam body 1 of arm joint like this.
Embodiment five:
Like Figure 10 and shown in Figure 5; Two ends on the inner surface top of the side plate 13 of the beam body 1 of arm joint are provided with first supporting seat 41 and second supporting seat 42 respectively; Drag-line 2 is arranged between first supporting seat 41 and second supporting seat 42; And when drag-line 2 is installed, certain pretightning force is set, and on drag-line 2, be provided with tensioning apparatus 3, can regulate the pretightning force on the drag-line 2 easily.
In addition; Be provided with the 3rd supporting seat 43 on the inner surface top of side plate 13; Said the 3rd supporting seat 43 to the first supporting seats 41 and second supporting seat 42 are more near upper plate 11; Support said drag-line 2, and make drag-line 2 and upper plate 1 at an angle, can make drag-line 2 more effectively share the suffered pulling force of beam body 1 of arm joint like this.
Embodiment six:
Like Figure 11 and shown in Figure 5; Two ends in the inner surface upper and lower of the side plate 13 of the beam body 1 of arm joint are provided with first supporting seat 41 and second supporting seat 42 respectively; Drag-line 2 is arranged between first supporting seat 41 and second supporting seat 42; And when drag-line 2 is installed, certain pretightning force is set, and on drag-line 2, be provided with tensioning apparatus 3, can regulate the pretightning force on the drag-line 2 easily.In addition; All be provided with the 3rd supporting seat 43 in the inner surface upper and lower of side plate 13; The 3rd supporting seat 43 on top than first supporting seat 41 on top and second supporting seat 42 more near the inner surface of upper plate 11; The 3rd supporting seat 43 of bottom than first supporting seat 41 of bottom and second supporting seat 42 more near the inner surface of lower plate 12; Said the 3rd supporting seat 43 supports said drag-line 2, and makes drag-line 2 and upper plate 11 and lower plate 12 at an angle, can make drag-line 2 more effectively share the suffered pulling force of beam body 1 of arm joint like this.
Be appreciated that; In embodiment three to embodiment six; First supporting seat 41 and second supporting seat 42 are not limited to be arranged on the inner surface of side plate 13, also can be on the external surface that is arranged on side plate 13, and corresponding with it; In embodiment five and embodiment six, the 3rd supporting seat 43 also can be arranged on the external surface of side plate 13.
In sum, through technical scheme of the present invention, use drag-line to share the suffered pulling force of beam body of arm joint; Reduced the moment of flexure of the beam body of arm joint, reduced of the requirement of said beam body, saved sheet material sheet metal thickness; Reduce cost, and reduced the weight of said jib, reduced tilting moment; Said jib is applied to pump truck, can realizes than being easy to more so that the bridge of pump truck is long; And owing to reduced the suffered pulling force of said beam body, carry so reduced the casing of said jib, improved the stability of carrying and the life-span of jib; In addition,,, reduced cost of production, improved efficient so also reduced the difficulty of said jib processing and manufacturing owing to reduced the thickness of sheet material.
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 (20)
1. a tension beam is characterized in that, comprising:
Beam body (1) and be arranged at least one drag-line (2) on the said beam body (1);
Said drag-line (2) is along the tension face that is axially set in said beam body (1) of said beam body (1);
Said drag-line (2) is provided with pretightning force.
2. tension beam according to claim 1 is characterized in that,
Also be provided with tensioning apparatus (3) on the said drag-line (2), the said pretightning force of the said drag-line of said tensioning apparatus (3) scalable (2).
3. tension beam according to claim 2 is characterized in that,
Said tensioning apparatus (3) is the spiral tensioning apparatus;
Said spiral tensioning apparatus comprises: two clamping parts (31), two connecting bolts (32) and a tensioning nut (33);
Said clamping part (31) is fixed on the said connecting bolt (32); Said connecting bolt (32) is fixedly connected with said drag-line (2); Said tensioning nut (33) and two said connecting bolt 32 bolts turn the said pretightning force that said nut (33) or said connecting bolt (32) can be provided with said drag-line (2).
4. tension beam according to claim 3 is characterized in that,
Two said connecting bolts (32) are arranged at the two ends of said tensioning nut (33);
Said tensioning nut (33) is provided with two sections screw threads with two said connecting bolt (32) bolts, said two sections screw threads in the opposite direction;
Turning said nut (33) can drive said two connecting bolts (32) and move round about.
5. according to the arbitrary described tension beam of claim 1 to 4, it is characterized in that,
End at said beam body (1) is provided with first supporting seat (41), is provided with second supporting seat (42) at the other end of said beam body (1);
Said drag-line (2) is installed between said first supporting seat (41) and said second supporting seat (42).
6. tension beam according to claim 5 is characterized in that,
Between said first supporting seat (41) and said second supporting seat (42), also be provided with the 3rd supporting seat (43);
Said the 3rd supporting seat (43) supports said drag-line (2).
7. tension beam according to claim 6 is characterized in that, the adjustable height of the strong point of said the 3rd supporting seat (43).
8. tension beam according to claim 7; It is characterized in that; Said the 3rd supporting seat (43) comprises that two gripper shoes and that are relatively arranged on the said beam body (1) are set up on said two gripper shoes, support the back shaft of said drag-line (2), and these two gripper shoe upper edge short transverses offer a plurality of locating holes that are used to accommodate the back shaft end respectively.
9. tension beam according to claim 7; It is characterized in that; Said the 3rd supporting seat (43) comprises a holder and a sliding seat, and said holder is fixed on the said beam body (1), and said sliding seat and said holder are slidingly connected; And can on a plurality of predeterminated positions of arranging along short transverse, engage with said holder, said sliding seat supports said drag-line (2).
10. tension beam according to claim 5 is characterized in that,
Said first supporting seat (41) is provided with first back shaft (411), and said second supporting seat (42) is provided with second back shaft (421);
The two ends of said drag-line (2) are separately fixed on said first back shaft (411) and said second back shaft (421);
Said first back shaft (411) and second back shaft (421) are gone up the compartment of terrain and are provided with the drag-line groove, and said drag-line (2) is wrapped in the said drag-line groove.
11. according to each described tension beam of claim 1 to 4; It is characterized in that; The two ends of said drag-line (2) are fixed in the said beam body (1), and the part between the two ends of said drag-line (2) is supported by the external surface of said beam body (1) or the 3rd supporting seat (43) that is positioned at the external surface of said beam body (1).
12. a jib comprises that the arm of at least one joint saves, it is characterized in that,
The said arm joint of at least one joint adopts to be processed like each described tension beam in the claim 1 to 10.
13. jib according to claim 12 is characterized in that,
The beam body (1) of said arm joint comprises upper plate (11) and lower plate (12);
Said upper plate (11) or said lower plate (12) are born pulling force.
14. jib according to claim 13 is characterized in that,
Drag-line (2) is axially disposed within the inboard and/or the outside of said upper plate (11), and/or is axially disposed within the inboard and/or the outside of said lower plate (12).
15. jib according to claim 13; It is characterized in that; The two ends of said drag-line (2) are fixed in the said beam body (1), and the part between the two ends of said drag-line (2) is supported by the external surface of said beam body (1) or the 3rd supporting seat (43) that is positioned at the external surface of said beam body (1).
16. jib according to claim 15 is characterized in that, the two ends of said upper plate (11) and/or lower plate (12) offer through hole, and said through hole is passed at the two ends of said drag-line (2) respectively, gets in the said beam body (1).
17. according to the arbitrary described jib of claim 12 to 16, it is characterized in that,
Said jib comprises the said arm joint of more piece, and adjacent said arm joint is hinged.
18. jib according to claim 17 is characterized in that,
Said drag-line (2) adopts the composite material of macromolecule organic material or inorganic material or macromolecule organic material and inorganic material to process.
19. jib according to claim 18 is characterized in that,
Said drag-line (2) is carbon fiber rope, alloy rope or wire rope.
20. a pump truck is characterized in that, comprises like the arbitrary described jib of claim 12 to 19.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210061720.XA CN102587668A (en) | 2012-03-09 | 2012-03-09 | Tensile beam, arm support and pump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210061720.XA CN102587668A (en) | 2012-03-09 | 2012-03-09 | Tensile beam, arm support and pump truck |
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| Publication Number | Publication Date |
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| CN102587668A true CN102587668A (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210061720.XA Withdrawn CN102587668A (en) | 2012-03-09 | 2012-03-09 | Tensile beam, arm support and pump truck |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979309A (en) * | 2012-12-05 | 2013-03-20 | 中联重科股份有限公司 | Concrete pump truck and arm frame thereof |
| CN103231213A (en) * | 2013-04-19 | 2013-08-07 | 杭州凯尔达机器人科技股份有限公司 | Manufacturing method of high-altitude operation mechanical arm support |
| CN103362309A (en) * | 2013-07-15 | 2013-10-23 | 徐州徐工施维英机械有限公司 | Device for enhancing rigidity of arm support and arm support structure |
| CN103953195A (en) * | 2014-05-06 | 2014-07-30 | 航天材料及工艺研究所 | Composite material cantilever section for cantilever crane of concrete pump truck and manufacturing method thereof |
-
2012
- 2012-03-09 CN CN201210061720.XA patent/CN102587668A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979309A (en) * | 2012-12-05 | 2013-03-20 | 中联重科股份有限公司 | Concrete pump truck and arm frame thereof |
| CN102979309B (en) * | 2012-12-05 | 2015-03-18 | 中联重科股份有限公司 | Concrete pump truck and arm frame thereof |
| CN103231213A (en) * | 2013-04-19 | 2013-08-07 | 杭州凯尔达机器人科技股份有限公司 | Manufacturing method of high-altitude operation mechanical arm support |
| CN103231213B (en) * | 2013-04-19 | 2015-05-13 | 杭州凯尔达机器人科技有限公司 | Manufacturing method of high-altitude operation mechanical arm support |
| CN103362309A (en) * | 2013-07-15 | 2013-10-23 | 徐州徐工施维英机械有限公司 | Device for enhancing rigidity of arm support and arm support structure |
| CN103362309B (en) * | 2013-07-15 | 2016-11-23 | 徐州徐工施维英机械有限公司 | A kind of device strengthening jib rigidity and jib structure |
| CN103953195A (en) * | 2014-05-06 | 2014-07-30 | 航天材料及工艺研究所 | Composite material cantilever section for cantilever crane of concrete pump truck and manufacturing method thereof |
| CN103953195B (en) * | 2014-05-06 | 2016-01-20 | 航天材料及工艺研究所 | A kind of concrete pump truck arm composite material arm saves |
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Open date: 20120905 |