CN110407115A - A kind of slide assemblies, truss arm and the crane of foldable truss arm - Google Patents
A kind of slide assemblies, truss arm and the crane of foldable truss arm Download PDFInfo
- Publication number
- CN110407115A CN110407115A CN201910827208.3A CN201910827208A CN110407115A CN 110407115 A CN110407115 A CN 110407115A CN 201910827208 A CN201910827208 A CN 201910827208A CN 110407115 A CN110407115 A CN 110407115A
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- Prior art keywords
- slide assemblies
- chord member
- pin shaft
- sliding part
- sliding
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- 230000000712 assembly Effects 0.000 title claims abstract description 62
- 238000000429 assembly Methods 0.000 title claims abstract description 62
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 210000001015 abdomen Anatomy 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 15
- 238000012545 processing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/68—Jibs foldable or otherwise adjustable in configuration
Abstract
This disclosure relates to a kind of slide assemblies of foldable truss arm, the truss arm includes the variable single fan structure of one group of symmetrically arranged section state, the list fan structure includes a pair of of chord member and web member, the slide assemblies include: sliding part, it is fixedly arranged on the chord member, be slidably connected with the web member, can make the web member relative to the chord member slidably, to adjust the section state of single fan structure；And retainer, it is set to the sliding part or the chord member, the web member can be limited in setting position.It according to the embodiment of the present disclosure, at least enables to slidable connection between chord member and web member more firm, reduces the whole manufacture difficulty and manufacturing cost of truss arm, and single fan structure is enable to be stably maintained at the section state of setting.
Description
Technical field
This disclosure relates to engineering machinery field more particularly to a kind of slide assemblies of foldable truss arm, truss arm and rise
Heavy-duty machine.
Background technique
Crane arm is the structural member for being widely used in crane hoisting equipment, for height or movement that heavy lift is certain
A certain distance.A kind of organizations tructure of the truss arm (ledge) as crane arm, is to be welded into lattice by fashioned iron, tubing
The crane arm of structural member often connects into required length by several segments bolt or pin shaft.Truss crane arm is conducive to from heavy and light
The lifting performance of crane is improved, it is especially especially pronounced in the case where promoting the biggish situation of amplitude.And due to can be with segmentation group
Dress, convenient for the transition transport and maintenance replacement of crane arm, along with truss arm lifting process reliability is higher, in crane
In occupy biggish specific gravity.
Truss arm is lighter due to being self-possessed, and is conducive to the lifting performance for improving crane, and in order to guarantee that truss arm has foot
Enough lifting performances meet limitation of the communications and transportation regulation to truss arm transportation clearance again, and relevant truss arm arm joint is often
The variation of the cross-sectional area of arm joint is realized by the slidable web member in both ends.
However realize that the slidably function of web member can not often adapt to the usage scenario of truss arm by conventional sliding rail, especially
In the case where loading biggish processing scene, conventional sliding rail is easy to appear malformation and then leads to the connection between chord member and web member
Failure, it is therefore necessary to a kind of slide assemblies for being directed to deformable truss arm are designed, so that sliding between chord member and web member
Dynamic connection is more firm, reduces the whole manufacture difficulty and manufacturing cost of truss arm, and single fan structure is enable to be stably maintained at
The section state of setting.
Summary of the invention
In view of this, the embodiment of the present disclosure provides slide assemblies, truss arm and the crane of a kind of foldable truss arm, energy
Enough so that the slidable connection between chord member and web member is more firm, the whole manufacture difficulty and manufacturing cost of truss arm are reduced,
And single fan structure is enable to be stably maintained at the section state of setting.
In one aspect of the present disclosure, a kind of slide assemblies of foldable truss arm are provided, the truss arm includes one group
The variable single fan structure of symmetrically arranged section state, the list fan structure include a pair of of chord member and web member, the slide assemblies
Include:
Sliding part is fixedly arranged on the chord member, is slidably connected with the web member, and the web member can be made relative to described
Chord member slidably, to adjust the section state of single fan structure；And
Retainer is set to the sliding part or the chord member, the web member can be limited in setting position.
In some embodiments, single fan structure includes at least two web members, at least two web members
Two rotationally mutually hinged by pin shaft, and the sliding part includes:
Sliding groove can accommodate the pin shaft, and slidably cooperate with pin shaft formation, so that mutually hinged two
The hinged end of the web member is moved along the extending direction of the sliding groove.
In some embodiments, the quantity of the sliding groove is one, and the pin shaft both ends are fixedly installed on the web member,
And the pin shaft and the web member form hollow region, so that the pin shaft is slidably disposed in the sliding groove.
In some embodiments, the quantity of the sliding groove is three, and two sliding grooves therein are symmetrically disposed on
The two sides of the pin shaft simultaneously respectively partially accommodate the pin shaft, and the web member is sliding from the third between described two sliding grooves
Dynamic slot stretches out, so that the pin shaft is slidably connected to the sliding rail under the common limit of three sliding grooves.
In some embodiments, symmetrically arranged two sliding grooves are processed by the same sliding part by grooving
It arrives, and circumferentially closed, so that the sliding part forms the closed connection relative to the pin shaft.
In some embodiments, the sliding groove is obtained through bending process twice along its length by steel plate or round steel, the
It once bends the first obtained short side and bends the second obtained short side for the second time and be fixedly installed on the chord member, two cunnings
Dynamic slot apart from one another by and be arranged in parallel to constitute symmetrically arranged two sliding grooves in the sliding part.
In some embodiments, the sliding groove is made of C-type steel, two sliding grooves side opposite with c-opening
Formula is set to the chord member to constitute the sliding part.
In some embodiments, the sliding groove is equipped with tie point in the setting position, and the retainer includes:
Baffle is removably assemblied in the tie point, can limit movement of the pin shaft relative to the sliding groove.
In some embodiments, the slide assemblies further include:
Interconnecting piece is connected between the chord member and the sliding part, and the extending direction along the sliding groove is relative to institute
It states chord member and/or the sliding part is removable, to expand slidably range of the web member relative to the chord member.
In some embodiments, the slide assemblies further include:
Interconnecting piece is fixedly installed in the chord member, and is connected to the sliding part, including at least two can accommodate it is described
The accommodating chamber of pin shaft；
The sliding part further include:
Guide groove is set to the inside of the sliding part, is respectively communicated to the accommodating chamber and the sliding groove, can make
The pin shaft moves to the accommodating chamber via the guide groove from the sliding groove.
In some embodiments, the sliding part is installed on side of the interconnecting piece far from the chord member, the sliding
Slot is set to the inside of the sliding part, and the guide groove is opened in inside the sliding part and close to the interconnecting piece.
In some embodiments, the pin shaft is cylinder, and the cylinder includes that at least one is parallel to cylinder axis
Cut off face, the length of the cross section of the guide groove is greater than the height of the cylinder, the width of the cross section of the guide groove
Degree is less than the diameter of the cylinder, and the width of the cross section of the guide groove cuts off face to the cylindrical shaft greater than described
The sum of the radius of the distance of line and the cylinder.
In the another aspect of the disclosure, a kind of truss arm is provided, including the skid assemblies as described in any embodiment above
Part, the list fan structure include at least two kinds of section states；
Under any section state, the retainer can limit the web member in setting position, and by same
Be in the first angle between the chord member and the web member of slide assemblies connection, the length direction of the guide groove with it is described
It is in the second angle between chord member, first angle is equal with second corner dimension.
In another aspect of the disclosure, a kind of truss arm is provided, including the skid assemblies as described in any embodiment above
Part, the truss arm include the variable single fan structure of two groups of symmetrically arranged section states, and any single fan structure is vertical
Any single fan structure in the list fan structure described in another group, and mutually perpendicular two single fan structures are set to same institute
State chord member.
In some embodiments, along the length direction of the truss arm, two lists of the same chord member are set to
There is setting spacing between fan structure.
In some embodiments, the interconnecting piece be at least partly embedded in inside the chord member or the interconnecting piece with
The sliding part is at least partly embedded in inside the chord member；
The chord member includes:
First flange and the second flange, protrusion direction are respectively facing in mutually perpendicular two single fan structures, can
The interconnecting piece is at least partly buried, or at least partly buries the interconnecting piece and the sliding part, and first flange
It is greater than the depth of burying of the interconnecting piece with the thickness of second flange, or burying greater than the interconnecting piece and the sliding part
If depth.
In another aspect of the disclosure, a kind of crane is provided, including the slide assemblies as described in any above.
Therefore, according to the embodiment of the present disclosure, at least enable to the slidable connection between chord member and web member more firm,
The whole manufacture difficulty and manufacturing cost of truss arm are reduced, and single fan structure is enable to be stably maintained at the section state of setting.
Detailed description of the invention
The attached drawing for constituting part of specification describes embodiment of the disclosure, and together with the description for solving
Release the principle of the disclosure.
The disclosure can be more clearly understood according to following detailed description referring to attached drawing, in which:
Fig. 1 is the structural schematic diagram according to single fan structure of the foldable truss arm of some embodiments of the disclosure；
Fig. 2 is the structural schematic diagram according to the slide assemblies of the foldable truss arm of some embodiments of the disclosure；
Fig. 3 is the structural schematic diagram according to the slide assemblies of the foldable truss arm of some embodiments of the disclosure；
Fig. 4 is the structural schematic diagram according to the slide assemblies of the foldable truss arm of some embodiments of the disclosure；
Fig. 5 is the schematic perspective view according to the slide assemblies of the foldable truss arm of some embodiments of the disclosure；
Fig. 6 is the sectional structure of the slide assemblies of the foldable truss arm of some embodiments of the disclosure according to figure 5
Schematic diagram；
Fig. 7 is the side view structure of the slide assemblies of the foldable truss arm of some embodiments of the disclosure according to figure 5
Schematic diagram；
Fig. 8 is the schematic perspective view according to the slide assemblies of the foldable truss arm of some embodiments of the disclosure；
Fig. 9 is the sectional structure of the slide assemblies of the foldable truss arm of some embodiments of the disclosure according to figure 8
Schematic diagram；
Figure 10 is the side view structure of the slide assemblies of the foldable truss arm of some embodiments of the disclosure according to figure 8
Schematic diagram；
Figure 11 is the solid according to the slide assemblies of the foldable truss arm of some embodiments of the disclosure in the first state
Structural schematic diagram；
Figure 12 is the slide assemblies of the foldable truss arm of some embodiments of the disclosure according to shown in Figure 11 in the first shape
Schematic cross-sectional view under state；
Figure 13 is the solid according to the slide assemblies of the foldable truss arm of some embodiments of the disclosure in the first state
Structural schematic diagram；
Figure 14 is the slide assemblies of the foldable truss arm of some embodiments of the disclosure according to shown in Figure 13 in the first shape
Schematic cross-sectional view under state；
Figure 15 is the solid according to the slide assemblies of the foldable truss arm of some embodiments of the disclosure in the first state
Structural schematic diagram；
Figure 16 is the slide assemblies of the foldable truss arm of some embodiments of the disclosure according to Figure 15 in the first shape
Schematic cross-sectional view under state；
Figure 17 is the schematic perspective view according to the foldable truss arms of some embodiments of the disclosure in the operating condition；
Figure 18 is the single fan of the foldable truss arm of some embodiments of the disclosure according to shown in Figure 17 in the operating condition
The structural schematic diagram of structure；
Figure 19 is the side view of the foldable truss arm of some embodiments of the disclosure according to shown in Figure 17 in the operating condition
The structural schematic diagram of angle；
Figure 20 is the schematic perspective view according to the foldable truss arm of some embodiments of the disclosure under travel position；
Figure 21 is single fan of the foldable truss arm of some embodiments of the disclosure according to figure 20 under travel position
The structural schematic diagram of structure；
Figure 22 is side view of the foldable truss arm of some embodiments of the disclosure according to figure 20 under travel position
The structural schematic diagram of angle.
In figure:
1, single fan structure, 2, chord member, the 21, first flange, the 22, second flange, 3, web member, 31, pin shaft, 311, cut off face,
4, sliding part, 41, sliding groove, 42, guide groove, 5, retainer, 51, baffle, 52, accommodating chamber, 6, interconnecting piece.
It should be understood that the size of various pieces shown in attached drawing is not to draw according to actual proportionate relationship.
In addition, same or similar reference label indicates same or similar component.
Specific embodiment
The various exemplary embodiments of the disclosure are described in detail now with reference to attached drawing.Description to exemplary embodiment
It is merely illustrative, never as to the disclosure and its application or any restrictions used.The disclosure can be with many differences
Form realize, be not limited to the embodiments described herein.These embodiments are provided so that the disclosure is thorough and complete, and
The scope of the present disclosure is given full expression to those skilled in the art.It should also be noted that unless specifically stated otherwise, otherwise in these implementations
Component described in example and positioned opposite, material component, numerical expression and the numerical value of step should be construed as merely and show
Example property, not as limitation.
" first ", " second " used in the disclosure and similar word are not offered as any sequence, quantity or again
The property wanted, and be used only to distinguish different parts.The similar word such as " comprising " or "comprising" means the element before the word
Cover the element enumerated after the word, it is not excluded that be also covered by the possibility of other element."upper", "lower", "left", "right" etc. are only used
In indicating relative positional relationship, after the absolute position for being described object changes, then the relative positional relationship may also be correspondingly
Change.
In the disclosure, when being described to certain device between the first device and the second device, in the certain device
There may be devices between two parties between the first device or the second device, and device between two parties can also be not present.When being described to specific device
When part connects other devices, which can be directly connected to without device between two parties with the other devices, can also be with
It is not directly connected to the other devices and there is device between two parties.
All terms (including technical term or scientific term) that the disclosure uses are common with disclosure fields
The meaning that technical staff understands is identical, unless otherwise specifically defined.It is also understood that in term such as defined in the general dictionary
The meaning consistent with their meanings in the context of the relevant technologies should be interpreted as having, without application idealization or
The meaning of extremely formalization explains, unless being clearly defined herein.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
As shown in Fig. 1~22: in one aspect of the present disclosure, a kind of slide assemblies of foldable truss arm are provided, it is described
Truss arm includes the variable single fan structure 1 of one group of symmetrically arranged section state, and the list fan structure 1 includes 2 He of a pair of of chord member
Web member 3, the slide assemblies include:
Sliding part 4 is fixedly arranged on the chord member 2, is slidably connected with the web member 3, can make the web member 3 relative to
The chord member 2 slidably, to adjust the section state of single fan structure 1；And
Retainer 5 is set to the sliding part 4 or the chord member 2, the web member 3 can be limited in setting position.
The section state of the list fan structure 1 refers to face folded between a pair of of the chord member 2 for constituting single fan structure 1
Product, the adjustable use demand that can adapt in truss arm under different scenes of section state: travel position adjust to compared with
Small section state is to obtain stronger passability, and adjusts in working condition stronger to obtain to biggish section state
Bearing capacity.
And in order to which single fan structure 1 can be stably maintained at optimal cross section state corresponding to different scenes, it is described
The web member 3 can be limited in setting position by retainer 5.The setting position can be preset when leaving the factory, can also be with
It is set as adjustable form, so that the list fan structure 1 is more flexible during the adjustment.
As shown in Fig. 1~10, in some embodiments, the list fan structure 1 includes at least two web members 3, at least
Two in two web members 3 are rotationally mutually hinged by pin shaft 31, and the sliding part 4 includes:
Sliding groove 41 can accommodate the pin shaft 31, and slidably cooperate with the pin shaft 31 formation, so that mutually hinged
The hinged ends of two web members 3 moved along the extending direction of the sliding groove 41.
When two in two web members 3 are rotationally mutually hinged by pin shaft 31, the chord member 2 and the abdomen
Slidable connection between bar 3 converts for the slidable connection between the sliding groove 41 and the pin shaft 31, passes through at this time
The sliding groove 41 opens up direction i.e. and can control the glide direction of the pin shaft 31, and then makes two mutually hinged abdomens
Bar 3 is slided along the direction that opens up of the sliding groove 41.
As shown in figs. 8-10, further, in some embodiments, the quantity of the sliding groove 41 is one, the pin
31 both ends of axis are fixedly installed on the web member 3, and the pin shaft 31 and the web member 3 form hollow region, so that the pin shaft
31 are slidably disposed in the sliding groove 41.
The hollow region that the pin shaft 31 is formed with the web member 3, for passing through a trough rim of the sliding groove 41,
To limit slidably range of the pin shaft 31 relative to the sliding groove 41.For example, the pin shaft 31 and the web member 3 it
Between be formed by the size of hollow region and can be just slightly larger than a trough rim of the sliding groove 41 Jing Guo the hollow region
Size so that the pin shaft 31 along the sliding groove 41 slide during, do not occur to open up direction along the sliding groove 41
The shaking in other directions in addition, to increase the stationarity during single 1 section state of fan structure changes.
As shown in Fig. 5~7, further, in some embodiments, the quantity of the sliding groove 41 is three, therein
Two sliding grooves 41 are symmetrically disposed on the two sides of the pin shaft 31 and respectively partially accommodate the pin shaft 31, the web member
3 stretch out from the third sliding groove 41 between described two sliding grooves 41, so that the pin shaft 31 is in three sliding grooves 41
It is common limit under be slidably connected to the sliding rail.
The web member 3 is stretched out from the third sliding groove 41 between described two sliding grooves 41, the third sliding groove
41 between two symmetrical sliding grooves 41, so that the stress of two symmetrical sliding grooves 41 is more flat
Weighing apparatus.
And two symmetrical sliding grooves 41 are used to accommodate the pin shaft 31, so that the pin shaft 31 and the sliding
Contact area between portion 4 can flexibly increase on demand, such as when the bearing requirements of the truss arm are higher, selection has
The sliding groove 41 of open structure type, and cooperate with the pin shaft 31 of corresponding length, the sliding groove can be expanded
41 with the contact area of the pin shaft 31, so that the local pressure of the sliding groove 41 and the pin shaft 31 is reduced, described in raising
The stability of slidable connection between web member 3 and the chord member 2.
Further, as shown in Fig. 2, preventing external impurities to improve the sliding part 4 to the sensibility of external environment
It invades the sliding groove 41 and the connection between the web member 3 and the chord member 2 is adversely affected, in some embodiments
In, symmetrically arranged two sliding grooves 41 are processed to obtain by the same sliding part 4 by grooving, and circumferentially closed, with
The sliding part 4 is set to form the closed connection relative to the pin shaft 31.
Further, as shown in figure 3, in order to reduce the difficulty of processing and processing cost of the sliding groove 41, in some realities
It applies in example, the sliding groove 41 is obtained through bending process twice along its length by steel plate or round steel, and bending obtains for the first time
First short side and the second obtained short side is bent for the second time being fixedly installed on the chord member 2, two sliding grooves 41 are with each other
Every and be arranged in parallel to constitute symmetrically arranged two sliding grooves 41 in the sliding part 4.
Further, in order to reduced under the premise of guaranteeing structural strength the sliding groove 41 processing cost and material at
This, in some embodiments, the sliding groove 41 is made of C-type steel, two sliding grooves 41 mode opposite with c-opening
The chord member 2 is set to constitute the sliding part 4.
Further, as shown in figure 4, in order to enable the web member 3 to be fixed in setting position relative to the chord member 2
It sets, in some embodiments, the sliding groove 41 is equipped with tie point in the setting position, and the retainer 5 includes:
Baffle 51 is removably assemblied in the tie point, can limit the pin shaft 31 relative to the sliding groove 41
Movement.
The baffle 51 is removably assemblied in the tie point, is in travel position in single fan structure 1 or is in
When working condition, the pin shaft 31 can be limited to corresponding tie point respectively, and be in travel position in single fan structure 1
When with the intermediate state of working condition, then the limitation to the pin shaft 31 can be contacted, so that the web member 3 is relative to the string
Bar 2 is freely slidable.
Further, in order to increase slidably range of the web member 3 relative to the chord member 2, in some embodiments,
The slide assemblies further include:
Interconnecting piece 6 is connected between the chord member 2 and the sliding part 4, and the extending direction along the sliding groove 41 is opposite
It is removable in the chord member 2 and/or the sliding part 4, to expand slidably model of the web member 3 relative to the chord member 2
It encloses.
Further, as shown in Figure 11~16, in some embodiments, the slide assemblies further include:
Interconnecting piece 6 is fixedly installed in the chord member 2, and is connected to the sliding part 4, including at least two can accommodate
The accommodating chamber 52 of the pin shaft 31；
The sliding part 4 further include:
Guide groove 42 is set to the inside of the sliding part 4, is respectively communicated to the accommodating chamber 52 and the sliding groove
41, the pin shaft 31 can be made to move to the accommodating chamber 52 via the guide groove 42 from the sliding groove 41.
Wherein, Figure 11~12 show the stereochemical structure of slide assemblies in the first state, in this state, the pin shaft
31 are located in the sliding groove 41 of the sliding part 4, so that the pin shaft 31 can continue to transport relative to the sliding groove 41
It is dynamic, to correspond to the intermediate state that single fan structure 1 is in travel position and working condition；
Figure 13~14 show the stereochemical structure of slide assemblies in the second condition, in this state, the pin shaft 31
In the guide groove 42 of the sliding part 4, limiting the pin shaft 31 can only be to the accommodating chamber 52 or to the sliding groove
41 movements, to make that the section state of single fan structure 1 is adjustable or section state is limited；
And Figure 15~16 show the stereochemical structure of slide assemblies in a third condition, and in this state, the pin shaft 31
In the accommodating chamber 52 of the interconnecting piece 6, the movement of the pin shaft 31 is limited, to make cutting for single fan structure 1
Surface state is restricted in travel position or in running order.
Since single fan structure 1 is within the long period in a duty cycle or in running order, or in fortune
Defeated state, and the intermediate state time between working condition and travel position is shorter.Therefore, the structure of the slide assemblies is answered
When more considering single fan structure 1 in working condition or the structural stability under travel position, especially in work shape
Stability under the larger load condition of state, in some embodiments, the sliding part 4 are installed on the interconnecting piece 6 far from institute
The side of chord member 2 is stated, the sliding groove 41 is set to the inside of the sliding part 4, and the guide groove 42 is opened in the sliding
The inside of portion 4 and close to the interconnecting piece 6.
Compared to the retainer 5 of 51 form of baffle as shown in Figure 4, to be located at the accommodating chamber 52 inside the interconnecting piece 6
There can be higher structural strength as the retainer 5, to be adapted to single fan structure 1 in travel position and in work
Make the bonding strength needs under state；And existed using being located at the sliding groove 41 inside the accommodating chamber 52 as single fan structure 1
The load-carrying construction of intermediate state between travel position and working condition ensure that the intensity of the sliding groove 41, and unlikely
It is adversely affected in the structure to the retainer 5, so that structure type of the sliding groove 41 including outer retainer 5, i.e., full
The function of the foot slide assemblies needs, and meets the structural strength needs between the chord member 2 and the web member 3.
Also, when the sliding groove 41 is located at the inside of the sliding part 4, the accommodating chamber 52 is located at the interconnecting piece 6
Inside when, the guide groove 42 is opened in the sliding part 4 close to the side of the interconnecting piece 6, can be realized described
Sliding groove 41 and 52 the two internal structures of the accommodating chamber interconnect, thus in the premise for both guaranteeing structural strength
Under, change in location of the convenient pin shaft 31 between the sliding groove 41 and the accommodating chamber 52.
Further, in order to enable the pin shaft 31 to be steadily contained in the accommodating chamber 52, in some embodiments
In, the pin shaft 31 is cylinder, it is described it is cylindrical include at least one be parallel to cylinder axis cut off face 311, it is described to lead
It is greater than the height of the cylinder to the length of the cross section of slot 42, the width of the cross section of the guide groove 42 is less than the circle
Cylindrical diameter, and the width of the cross section of the guide groove 42 be greater than it is described cut off face 311 to the cylindrical axis away from
From the sum of the radius with the cylinder.
The setting for cutting off 42 cross-sectional shape of face 311 and the guide groove, so that the pin shaft 31 can only be with specific
Angle (i.e. it is described cut off face 311 in parallel with the guide groove 42) in the guide groove 42 it is movable.Therefore, once it is described
Pin shaft 31 enters the accommodating chamber 52, and angle of the web member 3 due to receiving extraneous load and relative to the slide assemblies
Certain variation occurs, the pin shaft 31 is locked in the accommodating chamber 52, so that single fan structure 1 be made to be restricted to
The section state of setting.
And to leave the pin shaft 31 from the accommodating chamber 52, then need to overcome the extraneous load of the web member 3,
Make the pin shaft 31 cuts off face 311 again to the inner wall of the guide groove 42 is just coincided with, to enable the pin shaft 31
It is enough to be come back among the sliding groove 41 via the guide groove 42.
Further, in order to there is limitation in the angle for entering the guide groove 42 to the pin shaft 31 real in the case where
Existing single fan structure 1 opens up position and can enter correctly into the accommodating chamber 52 to realize pair cross-section the accommodating chamber 52
The locking of state provides a kind of truss arm in the another aspect of the disclosure, including the slideway as described in any embodiment above
Component, the list fan structure 1 include at least two kinds of section states；
Under any section state, the retainer 5 can limit the web member 3 in setting position, and by same
It is in the first angle, the length direction of the guide groove 42 between the chord member 2 and the web member 3 of the one slide assemblies connection
It is in the second angle between the chord member 2, first angle is equal with second corner dimension.
Further, as shown in Figure 17~22, in another aspect of the disclosure, a kind of truss arm is provided, including as before
Slide assemblies described in literary any embodiment, the truss arm include the variable single fan structure of two groups of symmetrically arranged section states
1, any single fan structure 1 be each perpendicular to another group described in any list fan structure 1 in list fan structure 1, and it is mutually perpendicular
Two single fan structures 1 are set to the same chord member 2.
The variable single fan structure 1 of mutually perpendicular two groups of symmetrically arranged section states, being capable of purlin described in further expansion
The volume change range of boom, thus with smaller volume size convenient transportation under travel position, and in the operating condition with
Bigger volume size bears load.
Since mutually perpendicular two single fan structures 1 will be arranged in the same chord member 2 so that the chord member 2 by
Power situation is more complicated, will be right especially when the interconnecting piece 6 and/or 4 part of the sliding part are set to the chord member 2
The intensity of the chord member 2 causes further to influence, therefore, in some embodiments, along the length direction of the truss arm, if
Being placed between two single fan structures 1 of the same chord member 2 has setting spacing.
Setting spacing between two single fan structures 1 to bury on the chord member 2 two interconnecting pieces 6 and/
Or the region of the sliding part 4 is no longer overlapped, and ensure that the chord member 2 with certain minimum cross-sectional area, to improve institute
State the integral strength of chord member 2.
Further, in some embodiments, the interconnecting piece 6 is at least partly embedded in inside the chord member 2 or institute
It states interconnecting piece 6 and the sliding part 4 is at least partly embedded in inside the chord member 2；；
And be at least partly embedded in order to prevent the interconnecting piece 6 inside the chord member 2 or the interconnecting piece 6 with
Influence of the sliding part 4 to 2 structural strength of chord member, the chord member 2 include:
First flange 21 and the second flange 22, protrusion direction are respectively facing in mutually perpendicular two single fan structures 1,
The interconnecting piece 6 can be at least partly buried, or at least partly buries the interconnecting piece 6 and the sliding part 4, and described the
The thickness of one flange 21 and second flange 22 is greater than the depth of burying of the interconnecting piece 6, or is greater than the interconnecting piece 6 and institute
State the depth of burying of sliding part 4.
In another aspect of the disclosure, a kind of crane is provided, including the slide assemblies as described in any above.
Therefore, according to the embodiment of the present disclosure, at least enable to the slidable connection between chord member 2 and web member 3 more steady
Gu reducing the whole manufacture difficulty and manufacturing cost of truss arm, and single fan structure 1 is enable to be stably maintained at the section shape of setting
State.
So far, the presently disclosed embodiments is described in detail.In order to avoid covering the design of the disclosure, do not describe
Some details known in the field.Those skilled in the art as described above, completely it can be appreciated how implement here
Disclosed technical solution.
Although being described in detail by some specific embodiments of the example to the disclosure, the skill of this field
Art personnel it should be understood that above example merely to be illustrated, rather than in order to limit the scope of the present disclosure.The skill of this field
Art personnel it should be understood that can not depart from the scope of the present disclosure and spirit in the case where, modify to above embodiments or
Some technical features can be equivalently replaced.The scope of the present disclosure is defined by the following claims.
Claims (17)
1. a kind of slide assemblies of foldable truss arm, the truss arm includes the variable list of one group of symmetrically arranged section state
Fan structure, the list fan structure includes a pair of of chord member and web member, which is characterized in that the slide assemblies include:
Sliding part is fixedly arranged on the chord member, is slidably connected with the web member, and the web member can be made relative to the chord member
Slidably, to adjust the section state of single fan structure；And
Retainer is set to the sliding part or the chord member, the web member can be limited in setting position.
2. slide assemblies according to claim 1, which is characterized in that the list fan structure includes at least two abdomens
Bar, two at least two web members are rotationally mutually hinged by pin shaft, and the sliding part includes:
Sliding groove can accommodate the pin shaft, and slidably cooperate with pin shaft formation, so that described in mutually hinged two
The hinged end of web member is moved along the extending direction of the sliding groove.
3. slide assemblies according to claim 2, which is characterized in that the quantity of the sliding groove is one, the pin shaft
Both ends are fixedly installed on the web member, and the pin shaft and the web member form hollow region, so that the pin shaft is slideably
It is set to the sliding groove.
4. slide assemblies according to claim 2, which is characterized in that the quantity of the sliding groove be three, therein two
A sliding groove is symmetrically disposed on the two sides of the pin shaft and respectively partially accommodates the pin shaft, and the web member is from described two
Third sliding groove between a sliding groove stretches out so that the pin shaft three sliding grooves it is common limit under slidably
Ground is connected to the sliding rail.
5. slide assemblies according to claim 4, which is characterized in that symmetrically arranged two sliding grooves are by same institute
It states sliding part and processes to obtain by grooving, and is circumferentially closed, so that the sliding part is formed relative to the closed of the pin shaft
Connection.
6. slide assemblies according to claim 4, which is characterized in that the sliding groove by steel plate or round steel along its length
It is obtained through bending process twice, bend the first obtained short side for the first time and bends obtained the second short side fixed setting for the second time
In the chord member, two sliding grooves apart from one another by and be arranged in parallel to constitute symmetrically arranged two institutes in the sliding part
State sliding groove.
7. slide assemblies according to claim 4, which is characterized in that the sliding groove is made of C-type steel, two cunnings
Dynamic slot is set to the chord member in the opposite mode of c-opening to constitute the sliding part.
8. slide assemblies according to claim 2, which is characterized in that the sliding groove is equipped with connection in the setting position
Point, the retainer include:
Baffle is removably assemblied in the tie point, can limit movement of the pin shaft relative to the sliding groove.
9. slide assemblies according to claim 2, which is characterized in that the slide assemblies further include:
Interconnecting piece is connected between the chord member and the sliding part, and the extending direction along the sliding groove is relative to the string
Bar and/or the sliding part are removable, to expand slidably range of the web member relative to the chord member.
10. slide assemblies according to claim 2, which is characterized in that the slide assemblies further include:
Interconnecting piece is fixedly installed in the chord member, and is connected to the sliding part, including at least two can accommodate the pin shaft
Accommodating chamber；
The sliding part further include:
Guide groove is set to the inside of the sliding part, is respectively communicated to the accommodating chamber and the sliding groove, can make described
Pin shaft moves to the accommodating chamber via the guide groove from the sliding groove.
11. slide assemblies according to claim 10, which is characterized in that it is separate that the sliding part is installed on the interconnecting piece
The side of the chord member, the sliding groove are set to the inside of the sliding part, and the guide groove is opened in the sliding part
Portion and close to the interconnecting piece.
12. slide assemblies according to claim 11, which is characterized in that the pin shaft is cylinder, the cylindrical packet
At least one face of cutting off for being parallel to cylinder axis is included, the length of the cross section of the guide groove is greater than the height of the cylinder
Degree, the width of the cross section of the guide groove is less than the diameter of the cylinder, and the width of the cross section of the guide groove is big
In the face of cutting off to the distance of the cylindrical axis and the sum of the radius of the cylinder.
13. a kind of truss arm, including the slide assemblies as described in claim 9~12 is any, which is characterized in that single fan knot
Structure includes at least two kinds of section states；
Under any section state, the retainer can limit the web member in setting position, and by same described
It is in the first angle, the length direction of the guide groove and the chord member between the chord member and the web member of slide assemblies connection
Between be in the second angle, first angle is equal with second corner dimension.
14. a kind of truss arm, which is characterized in that including the slide assemblies as described in claim 1~12 is any, the truss arm
Including single fan structure that two groups of symmetrically arranged section states can be changed, any single fan structure be each perpendicular to another group described in it is single
Any single fan structure in fan structure, and mutually perpendicular two single fan structures are set to the same chord member.
15. truss arm according to claim 14, which is characterized in that along the length direction of the truss arm, be set to same
There is setting spacing between the single fan structure of two of one chord member.
16. 4 truss arm according to claim 1, which is characterized in that the interconnecting piece is at least partly embedded in the chord member
Inside or the interconnecting piece and the sliding part are at least partly embedded in inside the chord member；
The chord member includes:
First flange and the second flange, protrusion direction are respectively facing in mutually perpendicular two single fan structures, can be at least
The interconnecting piece is partly buried, or at least partly buries the interconnecting piece and the sliding part, and first flange and institute
The thickness for stating the second flange is greater than the depth of burying of the interconnecting piece, or the embedded depth greater than the interconnecting piece and the sliding part
Degree.
17. a kind of crane, which is characterized in that including the slide assemblies as described in claim 1~12 is any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910827208.3A CN110407115A (en) | 2019-09-03 | 2019-09-03 | A kind of slide assemblies, truss arm and the crane of foldable truss arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910827208.3A CN110407115A (en) | 2019-09-03 | 2019-09-03 | A kind of slide assemblies, truss arm and the crane of foldable truss arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110407115A true CN110407115A (en) | 2019-11-05 |
Family
ID=68370007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910827208.3A Pending CN110407115A (en) | 2019-09-03 | 2019-09-03 | A kind of slide assemblies, truss arm and the crane of foldable truss arm |
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| Country | Link |
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| CN (1) | CN110407115A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111410121A (en) * | 2020-05-15 | 2020-07-14 | 邵克冰 | Double-mast type hoisting transportation truss |
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| CN110027993A (en) * | 2019-04-28 | 2019-07-19 | 徐工集团工程机械股份有限公司建设机械分公司 | Truss arm and crane |
| CN211169619U (en) * | 2019-09-03 | 2020-08-04 | 徐工集团工程机械股份有限公司建设机械分公司 | Slideway assembly of foldable truss arm, truss arm and crane |
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| CN202346654U (en) * | 2011-12-13 | 2012-07-25 | 中联重科股份有限公司 | Telescopic truss jib and engineering machine |
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| CN111410121A (en) * | 2020-05-15 | 2020-07-14 | 邵克冰 | Double-mast type hoisting transportation truss |
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