CN212534072U - Butt joint structural part and prefabricated part combination - Google Patents
Butt joint structural part and prefabricated part combination Download PDFInfo
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- CN212534072U CN212534072U CN202020202962.6U CN202020202962U CN212534072U CN 212534072 U CN212534072 U CN 212534072U CN 202020202962 U CN202020202962 U CN 202020202962U CN 212534072 U CN212534072 U CN 212534072U
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Abstract
The utility model discloses a butt joint structure and prefabricated component combination, wherein, butt joint structure includes grafting sleeve, inserted bar and more than two stopping pieces, installs more than two stopping pieces in grafting sleeve's slide correspondingly, and the excircle arc length of the first fan-shaped cross-section of stopping piece is greater than the interior arc length of the second fan-shaped cross-section of slide, thereby stopping piece can not fall to the grafting intracavity of grafting sleeve from the slide, when avoiding that the inserted bar inserts grafting intracavity makes grafting sleeve slope or skew, stopping piece falls into grafting intracavity and leads to the reduction of card end intensity; the situation that the retaining piece and the insertion rod are separated from reverse clamping due to the fact that the retaining piece falls into the insertion cavity when the insertion rod is pulled to be pulled out is also avoided; thereby the utility model discloses a stability and reliability when butt joint structure has guaranteed to peg graft, and then has guaranteed butt joint structure's resistance to plucking joint strength.
Description
Technical Field
The utility model belongs to the technical field of the building, concretely relates to butt joint structural part and prefabricated component combination.
Background
The precast concrete pile is a widely used pile foundation material in the building industry, is limited by production and transportation conditions, and the length of a single section of the precast concrete pile is often smaller than the design length requirement of the precast concrete pile, so that a plurality of precast concrete piles need to be axially connected together to achieve the overall length of the design requirement in the actual construction process. The traditional precast concrete pile connection mode is generally that the end plates of an upper precast concrete pile and a lower precast concrete pile are aligned and welded and fixed, the concrete method is that the end plates of the upper pipe pile and the lower pipe pile are aligned, after the verticality is adjusted, the upper pipe pile and the lower pipe pile are connected in an electric welding mode, the connection mode is greatly influenced by human factors and meteorological factors, and the construction difficulty and the construction cost are high due to the fact that the requirements on the verticality and the connection quality of the pipe piles are high, and after the pipe piles are sunk into a soil body, the welded parts are corroded and then gradually lose efficacy.
In order to solve the defects of the connection by adopting an end plate welding mode, a connecting piece which does not need to be welded and can be directly spliced is further provided.
The connecting piece comprises a large nut, a small nut, a middle nut, an inserting rod, a split type clamping ring and an elastic piece, wherein the large nut and the small nut are respectively sleeved at two ends of a stress rib of a precast concrete pile, the inserting rod is fixedly connected onto the small nut, the split type clamping ring and the elastic piece are stopped in the large nut through the middle nut, an end plug of the inserting rod is in a drum shape with two small ends and a large middle part, when the inserting rod is inserted into the large nut, the split type clamping ring is pushed to overcome the elastic force of the elastic piece to move downwards and simultaneously radially open the split type clamping ring, after the maximum diameter part of the plug crosses the minimum inner diameter part of the split type clamping ring, the split type clamping ring is reset upwards and radially furled under the elastic action of the elastic piece, the split type clamping ring is radially contracted at the lower end of the middle nut to reversely clamp the inserting rod, so that.
Although compared with the traditional welding connection mode, the connecting piece has the advantages of high butt joint construction speed, high connection strength and the like. However, because the precast concrete pile inevitably has a certain pile end face inclination and/or nut sleeve positioning error and/or axial misalignment of the upper and lower precast concrete piles, therefore, in order to ensure that a plurality of connecting pieces between the upper and lower precast concrete piles can complete the plugging action, a radial gap which is large enough to adjust the error is required to be left between the inner hole of the middle nut and the middle section of the plug, so that the central axis of the inserted link can incline or deviate relative to the central axis of the middle nut when the plug contacts the split type snap ring, further, the situation that part of the clamping ring falls into the bottom of the large nut in the inserting process occurs, the falling probability is small, once present, only a partial number of snap rings may be active, resulting in a low or unreliable tensile strength after connection, which is to avoid such risks for the construction industry with high safety requirements.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a docking structure spare and prefabricated component combination lies in solving current connecting piece and falls into the problem that big nut bottom leads to grafting failure at inserted bar insertion process snap ring, stability and reliability when guaranteeing to peg graft.
In order to achieve the above object, the present invention provides a butt joint structural member, which includes:
the splicing sleeve is internally provided with a splicing cavity, and the splicing cavity is provided with more than two slideways on the cavity wall of the rear section at intervals along the circumferential direction;
one axial end of the insertion rod is provided with a reducing insertion head which can extend into the insertion cavity; and
more than two backstop pieces which can slide along the corresponding slide ways and reversely clamp the reducing plug-in connectors extending into the plug-in cavities;
the anti-return piece is provided with a first fan-shaped section perpendicular to the plugging direction, the slide way is provided with a second fan-shaped section perpendicular to the plugging direction, and when the circle center of the first fan-shaped section is coincident with that of the second fan-shaped section, the outer arc length L1 of the first fan-shaped section is larger than the inner arc length L2 of the second fan-shaped section.
Compared with the prior art, the utility model provides a docking structure spare is installed the stopping piece correspondence more than two in the slide, and the outer circular arc length of the first fan-shaped cross section of stopping piece is greater than the inner circular arc length of the second fan-shaped cross section of slide to when stopping piece atress removes towards the grafting chamber direction, the outer circular arc of the first fan-shaped cross section of stopping piece ends in the inner circular arc of the second fan-shaped cross section of slide, and the stopping piece can not fall to falling into the telescopic grafting intracavity of grafting from the slide. The phenomenon that when the insertion rod is inserted into the insertion cavity to enable the insertion sleeve to incline or deviate is avoided, the stopping piece falls into the insertion cavity to cause the reduction of the clamping strength; the situation that the retaining piece and the insertion rod are separated from reverse clamping due to the fact that the retaining piece falls into the insertion cavity when the insertion rod is pulled to be pulled out is also avoided; thereby the utility model discloses a stability and reliability when butt joint structure has guaranteed to peg graft, and then has guaranteed butt joint structure's resistance to plucking joint strength.
Another object of the present invention is to provide a prefabricated component assembly connected by the aforementioned butt joint structural member.
In order to achieve the above object, the present invention provides a prefabricated component assembly, which comprises two or more prefabricated components sequentially butted in a straight line direction, wherein the end of one prefabricated component is butted with the end of another prefabricated component through the butt joint structure.
The utility model provides a prefabricated component combination owing to have aforementioned butt joint structure spare, consequently also has the technological effect of aforementioned butt joint structure spare to have the effect that the installation is simple, high-speed joint, the efficiency of construction is high in addition.
Drawings
Fig. 1 is a schematic structural view of a first docking structural member in a plugging state according to an embodiment of the present invention;
fig. 2 is an exploded view of a first docking structure according to an embodiment of the present invention;
fig. 3 is a schematic transverse cross-sectional view of a first docking structure in an inserted state according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of an insertion sleeve of a first docking structure according to an embodiment of the present invention;
fig. 5 is a schematic axial cross-sectional view of an insertion sleeve in a first docking structure according to an embodiment of the present invention;
fig. 6 is an axial cross-sectional view of a first docking structure in an inserted state according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a second docking structural member in a plugging state according to an embodiment of the present invention;
fig. 8 is an axial cross-sectional view of a second docking structure in an inserted state according to an embodiment of the present invention;
fig. 9 is an axial cross-sectional view of a retaining member in a second docking structure according to an embodiment of the present invention;
fig. 10 is a schematic axial cross-sectional view of an insertion sleeve in a second docking structure according to an embodiment of the present invention;
fig. 11 is a schematic structural view of a third docking structural member in a plugging state according to an embodiment of the present invention;
fig. 12 is a partial structural schematic view of a third docking structure according to an embodiment of the present invention;
fig. 13 is a schematic structural view of a fourth docking structural member in a plugging state according to an embodiment of the present invention;
fig. 14 is a schematic structural view of a sixth docking structural member in a plugged state according to an embodiment of the present invention;
fig. 15 is an exploded view of a sixth docking structure according to an embodiment of the present invention;
fig. 16 is a schematic structural view of a seventh docking structural member in an inserted state according to an embodiment of the present invention;
fig. 17 is a schematic cross-sectional view of the prefabricated parts assembly in the butt joint state according to the embodiment of the present invention.
In the drawings: 100. butting the structural members;
10. inserting a sleeve; 11. an insertion cavity; 12. a slideway; 121. a second fan-shaped cross-section; 122. a first slip segment; 123. a second slip segment; 124. a reverse stop surface; 13. a through hole;
20. inserting a rod; 21. a reducing plug-in connector; 211. an anti-drop joint surface;
30. a backstop member; 31. a first fan-shaped cross-section; 32. a circular arc angle; 33. an outer wedge surface; 34. an inner wedge surface;
40. an elastic member; 41. a spring; 42. a plate spring;
50. a gasket;
60. a cover body; 61. a limiting bulge;
70. a hoop;
200. combining prefabricated parts; 201. a prefabricated member; 202. another prefabricated member; 203. a stress rib; 205. and connecting the sleeve.
Detailed Description
In order to facilitate understanding of the technical solutions of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.
In this specification, terms such as "upper, lower, inner, and outer" are established based on positional relationships shown in the drawings, and the corresponding positional relationships may vary depending on the drawings, and therefore, the terms are not to be construed as absolutely limiting the scope of protection; moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
Example one
As shown in fig. 1 to 5, in a first embodiment, a docking structure 100 is provided, which includes: an insertion sleeve 10, an insertion rod 20 and more than two backstop members 30. In this embodiment, the direction away from the central axis in any radial direction of the socket sleeve 10 is defined as outward, and the reverse direction is defined as inward; the inner and outer directions of the remaining components are preferably defined with reference to these directions unless otherwise specified.
Specifically, an insertion cavity 11 is formed inside the insertion sleeve 10, and the insertion cavity 11 is provided with more than two radially extending slideways 12 at intervals along the circumferential direction on the cavity wall of the rear section (in this embodiment, the insertion inlet is defined as front, and the reverse direction is rear); a reducing plug-in connector 21 which can extend into the plug-in cavity 11 is formed at one axial end of the plug-in rod 20; more than two retaining pieces 30 can slide along the corresponding slide ways 12 and reversely clamp the reducing plug-in connectors 21 extending into the plug-in cavities 11; the retaining member 30 has a first fan-shaped section 31 perpendicular to the plugging direction, the slide 12 has a second fan-shaped section 121 perpendicular to the plugging direction, and when the center of the first fan-shaped section 31 coincides with the center of the second fan-shaped section 121, the outer arc length L1 of the first fan-shaped section 31 is greater than the inner arc length L2 of the second fan-shaped section 121.
Preferably, the number of the retaining members 30 is 3 to 6, and the number of the retaining members 30 in this embodiment is 4, but of course, the number of the retaining members 30 may also be 2 or more than 6, which is not particularly limited, and it is worth to say that the number of the retaining members 30 is the same as that of the slide 12.
Specifically, the utility model discloses when butt joint structure 100 uses, first correspond the installation in slide 12 of grafting sleeve 10 with stopping piece 30, insert grafting chamber 11 back at inserted bar 20, stopping piece 30 stops reducing bayonet joint 21 reverse, thereby the rapid stabilization is the grafting that realizes butt joint structure 100, and wherein, in the cross section of stopping piece 30 and slide 12 perpendicular to grafting direction, the outer circular arc length L1 of the first fan-shaped cross-section 31 of stopping piece 30 is greater than the inner circular arc length L2 of the second fan-shaped cross-section 121 of slide 12, stopping piece 30 is greater than slide 12 at the ascending inboard width in circumference in the outside width in circumference promptly, when stopping piece 30 outside sliding to slide 12's inboard, stopping piece 30 stops to slide 12 in, can not drop to in the grafting chamber 11.
The stopping piece 30 of the butt joint structural member provided by the utility model can not fall from the slide way 12 into the splicing cavity 11 of the splicing sleeve 10, thereby avoiding that the stopping piece 30 falls into the splicing cavity 11 to reduce the clamping strength when the splicing sleeve 10 inclines or deviates when the inserted rod 20 is inserted into the splicing cavity 11; the reverse clamping of the retaining piece 30 and the insertion rod 20 caused by the fact that the retaining piece 30 falls into the insertion cavity 11 when the insertion rod 20 is pulled out is avoided; thereby the utility model discloses a stability and reliability when butt joint structure has guaranteed to peg graft, and then has guaranteed butt joint structure's resistance to plucking joint strength.
Example two
In the present embodiment, the same portions as those in the first embodiment are given the same reference numerals, and the same description is omitted.
As shown in fig. 3 and 4, compared to the first embodiment, the docking structural component provided in this embodiment has such a different structural design:
the clearance delta L is formed between the retaining piece 30 and the slide way 12, so that the retaining piece 30 can smoothly slide in the slide way 12, the delta L is more than or equal to 0.01mm and less than or equal to 5mm, the size of the inserting sleeve 10 is limited when the inserting sleeve is customized, the size of the slide way 12 which can be arranged on the inserting sleeve 10 also has a certain range, the width of the slide way 12 which can be arranged is generally less than 10mm, when the clearance is arranged, the minimum value of the clearance can allow the retaining piece 30 to slide in the slide way 12, and the maximum value of the clearance is less than the width of the slide way 12 and the required width of the retaining piece 30 and the inserting rod 20 which are matched and clamped stably needs to be.
Preferably, Δ L is greater than or equal to 0.01mm and less than or equal to 1mm, so that the problem that the reverse clamping force is insufficient due to the fact that the contact area between the retaining member 30 and the inserted link 20 is too small because of too large gap is avoided.
More preferably, Δ L is 0.01mm or more and 0.1mm or less, and the circumferential movement range of the retainer 30 is large, which results in a decrease in the reverse locking strength.
More preferably, Δ L is more than or equal to 0.01mm and less than or equal to 0.05mm, which not only allows the retaining member 30 to slide in the slideway 12, but also allows the size of the retaining member 30 to be stably engaged with the inserted link 20.
The section of the splicing cavity 11 perpendicular to the splicing direction is circular, and the arc angle alpha 1 corresponding to the slide ways 12 is larger than or equal to the arc angle alpha 2 corresponding to the cavity wall of the splicing cavity 11 between two adjacent slide ways 12; that is, in the circumferential direction, the position occupied by the slide way 12 on the plug sleeve 10 is larger than the position occupied by the cavity wall between the adjacent slide ways 12 on the plug sleeve 10, and the position occupied by the slide way 12 is large, so that the size of the backstop piece 30 capable of being placed is large, the contact area between the backstop piece 30 and the inserted rod 20 can be increased, and the backstop piece 30 and the inserted rod 20 can be stably clamped.
On the section of the plugging sleeve 10 perpendicular to the plugging direction, the sum of the lengths of the inner arcs of all the slide ways 12 facing the plugging cavity 11 accounts for 50 to 98 percent of the circumference of the inner wall of the plugging sleeve 10, and the size of the slide ways 12 in the range is enough to enable the retaining pieces 30 placed in the slide ways 12 to be stably clamped with the plug rod 20, and the situation that the cavity wall between the slide ways 12 is too thin and easy to damage can be avoided.
The number of the retaining pieces 30 is the same as that of the slide ways 12, one retaining piece 30 is arranged in each slide way 12, and in the section of the butt joint structural member perpendicular to the plugging direction, the inner arc length of all the retaining pieces 30 in the slide ways 12 towards the plugging cavity 11 accounts for 50-97% of the circumference of the plugging sleeve 10, and within the range, the retaining pieces 30 and the plugging rod 20 can be stably clamped; preferably, the inner arc length of all the retaining members 30 toward the plug cavity 11 accounts for 65% to 80% of the circumference length of the plug sleeve 10, and the retaining strength is enhanced when the retaining members 30 and the plug rod 20 can be stably retained.
The radial maximum dimension value of the retaining piece 30 is greater than the maximum radial dimension value of the slide way 12, so that the inner side of the retaining piece 30 can protrude out of the wall of the insertion cavity 11, that is, the inner side of the retaining piece 30 is closer to the central axis of the wall of the insertion cavity 11 than the wall of the insertion cavity 11, and the retaining piece 30 can reversely clamp the insertion rod 20.
EXAMPLE III
In this embodiment, the same portions as those in the first and second embodiments are given the same reference numerals, and the same description is omitted.
As shown in fig. 1 to 3 and 6, compared to the first and second embodiments, the docking structure provided in the present embodiment has such a different structural design:
the slide way 12 comprises a first slide section 122 which can enable the sliding direction of the retaining piece 30 and the inserting direction of the inserting rod 20 to form an included angle of 1-89 degrees, namely the included angle between the sliding direction of the first slide section 122 and the central axis of the inserting cavity 11 is 1-89 degrees, so that the retaining piece 30 can be inclined to the axial movement of the inserting cavity 11 when sliding, and the reverse clamping between the retaining piece 30 and the inserting rod 20 is enhanced.
Preferably, the slideway 12 further includes a second sliding section 123 located behind the first sliding section 122, which enables the sliding direction of the retaining member 30 to be substantially parallel to the insertion direction of the insertion rod 20, when the insertion rod 20 is inserted, the retaining member 30 slides into the second sliding section 123 under the action of an extrusion force, so as not to prevent the insertion rod 20 from being inserted into the insertion cavity 11, and also to reduce the wear between the retaining member 30 and the insertion rod 20, and to avoid a possible tilting condition of the retaining member 30, when the insertion rod 20 is inserted, the restoring force of the elastic member 40 received by the retaining member 30 is greater than the friction force between the retaining member 30 and the insertion rod 20, so that the retaining member 30 is restored to the first slideway 12 over the maximum diameter portion of the variable diameter insertion head to reversely stop the insertion rod 20.
Preferably, the axial length of the first sliding section 122 is smaller than or equal to the axial length of the second sliding section 123, so that the retaining member 30 is at least partially located in the second sliding section 123, and the retaining member 30 is prevented from being jammed in the first slideway 12 and not moving into the second sliding section 123 when the insertion rod 20 is inserted.
The wall thickness of the rear section cavity of the plugging cavity 11 is smaller than that of the front section cavity of the plugging cavity 11, so that the material is saved, and the cost is reduced.
Referring to fig. 7, the retaining member 30 has a circular arc angle 32 between the outer circular arc and the two circumferential sides of the first sectorial cross section 31; and/or an arc angle 32 is arranged between the inner arc of the first fan-shaped section 31 and two circumferential sides, so that clamping failure caused by clamping and clamping of the backstop 30 in the slide way 12 when the butting structural member is subjected to extrusion force or drawing force and the backstop is inclined in the circumferential direction is avoided.
Example four
In this embodiment, the same portions as those in the first, second, and third embodiments are given the same reference numerals, and the same description is omitted.
As shown in fig. 2, 5-10, the docking structural member provided in this embodiment has such a different structural design as compared to the first, second and third embodiments:
the slide 12 has a counter stop face 124 with an inner diameter increasing away from the insertion entrance of the insertion cavity 11; the reducing plug 21 is provided with an anti-falling clamping surface 211; the retainer 30 has an outer wedge surface 33 corresponding to the reverse stopper surface 124 and an inner wedge surface 34 corresponding to the disengagement preventing surface 211. Specifically, the retaining member 30 is disposed between the reverse stop surface 124 and the anti-disengagement surface 211, and when the plug rod 20 is subjected to an axial pulling force, the outer wedge surface 33 of the retaining member 30 abuts against the reverse stop surface 124 of the slide way 12 and moves toward the plug cavity 11 along the reverse stop surface 124, so that the engagement strength between the inner wedge surface 34 of the retaining member 30 and the plug rod 20 is increased.
An included angle beta 1 between a contour generatrix of an inner wedge surface 34 and a contour generatrix of an outer wedge surface 33 of the retaining piece 30 is larger than an included angle beta 2 between a contour generatrix of a reverse stop surface 124 and a contour generatrix of an anti-release clamping surface 211, when the butt joint structural member 100 bears axial drawing force, the retaining piece 30 tilts so that the contour generatrix of the outer wedge surface 33 is abutted against the contour generatrix of the reverse stop surface 124, and one end, far away from a plugging inlet, of the retaining piece 30 is at least partially embedded into the reducer plug-in connector 21. Specifically, when the plunger 20 is inserted into the plugging chamber 11, the plunger 20 gives the retaining member 30 a pressing force moving in a direction away from the reverse stopping surface 124, and since an included angle β 1 between a contour generatrix of the inner wedge surface 34 and a contour generatrix of the outer wedge surface 33 of the retaining member 30 is greater than an included angle β 2 between a contour generatrix of the reverse stopping surface 124 and a contour generatrix of the anti-slip surface 211, in a state after plugging, a gap is formed between the retaining member 30 and the reverse stopping surface 124, and the front end gap is greater than the rear end gap. When the plug rod 20 bears the axial drawing force, the plug rod 20 gives the force that the front end of the retaining member 30 tilts towards the reverse stop surface 124, so that the rear end of the retaining member 30 is at least partially embedded into the reducing plug head 21, the retaining member 30 is not easy to separate from the plug rod 20, and the strength of reverse clamping between the retaining member 30 and the plug rod 20 is enhanced.
An included angle theta 1 is formed between a contour generatrix of the inner wedge surface 34 of the retaining piece 30 and a central axis of the retaining piece 30, an included angle theta 2 is formed between a contour generatrix of the anti-slip clamping surface 211 and a central axis of the insert rod 20, and an angle value of the included angle theta 1 is smaller than or equal to an angle value of the included angle theta 2.
If the angle value of the included angle θ 1 is smaller than the angle value of the included angle θ 2, the engaging force between the lower part of the retaining member 30 and the reducing plug 21 is relatively large (in this embodiment, the engaging force near the plug inlet is defined as up, and the engaging force between the upper part of the retaining member 30 and the reducing plug 21 is relatively small), the extrusion force-bearing surface between the lower part of the retaining member 30 and the reducing plug 21 is relatively small, and the requirement on the material performance (such as hardness) of the retaining member 30 and the plug rod 20 is high to ensure the pull-out resistance.
If the angle value of the included angle theta 1 is equal to the angle value of the included angle theta 2, the engaging force of the retaining piece 30 and the reducing plug-in connector 21 along the axial direction is uniform, the extrusion stress surfaces of the lower part of the retaining piece 30 and the reducing plug-in connector 21 are large, the extrusion inching deformation is small, the mutual engaging effect is good, and large axial pulling resistance can be borne.
Similarly, the outer wedge surface 33 of the retaining member 30 is an outer conical surface, the profile bus of the retaining member forms an included angle θ 3 with the central axis of the retaining member 30, the reverse stopping surface 124 is an inner conical surface, the profile bus of the retaining member forms an included angle θ 4 with the central axis of the inserting cavity 11, and the angle value of the included angle θ 3 is greater than or equal to the angle value of the included angle θ 4, so as to reduce the contact area between the outer wedge surface 33 of the retaining member 30 and the reverse stopping surface 124 when the retaining member 30 is gathered along the inner conical surface at the peripheral part of the reducing inserting head 21, so as to reduce the frictional resistance when the retaining member 30 is gathered along the inner conical surface, and ensure the smoothness of the sliding retaining inserted rod 20 of the retaining member 30. In the present embodiment, the central axis of the plunger 20, the central axis of the retaining element 30 and the central axis of the plug-in sleeve 10 are parallel or substantially overlap.
The upper end of the retaining member 30 contacting the insertion end of the plunger 20 at the initial stage, that is, the upper portion of the inner side of the retaining member 30, may be designed as an inclined surface or an arc surface to reduce the friction and the axial thrust of the plunger 20 acting on the retaining member 30, so that the retaining member 30 is less likely to slip off, or a lubricating material such as lubricating grease may be applied to the contact portion of the retaining member 30 and the plunger 20 during insertion, or a self-lubricating material such as polytetrafluoroethylene, polyacetal, polyoxymethylene may be compounded at the insertion end of the plunger 20 to reduce the friction coefficient therebetween, thereby further reducing the friction and reducing the possibility of the retaining member 30 slipping off.
On the basis of the above-mentioned embodiments, further improvements can be made, for example, in order to improve the anti-pulling performance of the mating member, in order to prevent the plug rod 20 from moving outward in the axial direction due to the retainer 30 sliding obliquely downward relative to the plug rod 20 when the plug rod 20 is subjected to the outward-pulling force, the outer wedge surface 33 of the retainer 30 in pressing contact with the reverse stop surface 124 has at least one insertion portion inserted into the reverse stop surface 124 in the circumferential direction, the reverse stop surface 124 is formed with an inner concave insertion region for accommodating the insertion portion, so that the retainer 30 forms a connection structure with the plug sleeve 10 in engagement, and/or the inner wedge surface 34 of the retainer 30 in pressing contact with the anti-pulling surface 211 has at least one insertion portion inserted into the anti-pulling surface 211 in the circumferential direction, the anti-pulling surface 211 is formed with an inner concave insertion region for accommodating the insertion portion, so that the retaining member 30 forms a snap-fit connection with the plunger 20.
Preferably, the outer wedge surface 33 of the backstop 30 has a first surface hardness value HRC1The reverse stop surface 124 has a second surface hardness value HRC2First surface hardness value HRC1Greater than the second surface hardness value HRC2And HRC1sinβ1cosβ2≤HRC2＜HRC1(ii) a The anti-slip joint surface 211 has a third surface hardness value HRC3First surface hardness value HRC1Greater than a third surface hardness value HRC3And HRC1sin(β1+β2)cos(β1-β2)≤HRC3＜HRC1WhereinAnd β 1 satisfies: beta 1 is more than or equal to 9 degrees and less than or equal to 80 degrees, and beta 2 meets the following requirements: beta 2 is more than or equal to 8 degrees and less than or equal to 79 degrees, wherein the first surface hardness value HRC1Preferably 50 HRC-54 HRC, and the third surface hardness value HRC3Preferably 36HRC to 45 HRC.
When the butt joint structural member is subjected to an anti-pulling test or an external pulling force in actual use, the retaining member 30, the inserting sleeve 10 and the inserting rod 20 can form a connection structure engaged and blocked by each other through incarceration, so that the anti-pulling performance is further improved.
EXAMPLE five
In this embodiment, the same portions as those in the first, second, third and fourth embodiments are given the same reference numerals, and the same description is omitted.
As shown in fig. 1, 2, 8, 14 and 15, the docking structural member provided in this embodiment has such a different structural design as compared with the first, second, third and fourth embodiments:
the butt joint structural member further includes an elastic member 40, the elastic member 40 is a spring 41, the spring 41 is disposed at the rear section of the inserting cavity 11, and supports the retaining member 30 in the inserting entrance direction, and the spring 41 always provides the retaining member 30 with a supporting force, so that the retaining member 30 can move along the reverse stopping surface 124 of the slide 12 to gather to block the reducing inserting joint 21.
A gasket 50 is provided between the spring 41 and the retaining member 30, and the gasket 50 can stably transmit the pushing force given by the spring 41 to the retaining member 30.
The grafting sleeve 10 is kept away from grafting entry one end and is provided with lid 60, and spring 41 both ends are butt stopping piece 30 and lid 60 respectively, and the lid 60 of setting is fixed in grafting sleeve 10 with spring 41, avoids spring 41 to break away from and makes the utility model discloses a butt joint structure is inefficacy.
The cover body 60 is provided with a limiting protrusion 61 towards one side of the plugging cavity 11, one end of the spring 41 abutting against the cover body 60 is located on the inner side of the limiting protrusion 61, so that the spring 41 is limited to move along any radial direction, the pushing force of the stopping piece 30 given by the spring 41 is unstable or the pushing force of the stopping piece 30 given by the spring 41 is reduced due to the fact that the radial movement of the spring 41 is avoided, and the matching between the stopping piece 30 and the plugging sleeve 10 and the plugging rod 20 is more stable.
The cover body 60 is clamped or inserted onto the insertion sleeve 10, or the cover body 60 is screwed with the insertion sleeve 10, and of course, the cover body 60 may also be connected with the insertion sleeve 10 by other connection methods.
The wall of the cavity between the two adjacent second sliding sections 123 of the inserting sleeve 10 is provided with a through hole 13 for placing the spring 41, so that the spring 41 is limited in the through hole 13, the spring 41 does not shake, and the situation that the spring 41 stably provides the thrust for the retaining piece 30 is ensured; or, the ferrule 70 is sleeved on the side of the plug-in sleeve 10 away from the plug-in inlet to limit the spring 41 on the plug-in sleeve 10, so that the spring 41 is not separated from the plug-in sleeve 10 when being extruded, the shaking distance of the spring 41 is limited, and the spring 41 is ensured to stably provide the thrust for the stopping member 30.
EXAMPLE six
In this embodiment, the same portions as those in the first, second, third, fourth and fifth embodiments are given the same reference numerals, and the same description thereof is omitted.
As shown in fig. 11 to 13, the docking structural member provided in this embodiment has such a different structural design as compared to the first, second, third, fourth and fifth embodiments:
the butt joint structural part further comprises an elastic part 40, the elastic part 40 is a plate spring 42, the plate spring 42 is at least partially arranged in the second sliding section 123, one end of the plate spring 42 is abutted to the stopping part 30, the other end of the plate spring is fixed to one end, far away from the inserting inlet, of the inserting sleeve 10, or one end, far away from the inserting inlet, of the inserting sleeve 10 is provided with a cover body 60, and the other end of the plate spring 42 is abutted to the cover body. The plate spring 42 always provides a thrust force to the retaining member 30, so that the retaining member 30 can move along the reverse stop surface 124 of the slideway 12 to gather and stop the reducer spigot 21.
The ferrule 70 is arranged on the side of the plug-in sleeve 10 far from the plug-in inlet to limit the plate spring 42 on the plug-in sleeve 10, so that the spring 41 is not separated into the plug-in sleeve 10 when being extruded, the shaking distance of the plate spring 42 is limited, and the plate spring 42 is ensured to stably provide the thrust for the stopping piece 30.
EXAMPLE seven
In this embodiment, the same portions as those in the first, second, third, fourth, fifth, and sixth embodiments are given the same reference numerals, and the same description thereof is omitted.
As shown in fig. 1-17, with respect to the first, second, third, fourth, fifth and sixth embodiments, the present invention further provides a prefabricated component assembly 200, which includes more than two prefabricated components sequentially connected in a straight line direction, wherein an end of one prefabricated component 201 is connected to an end of another prefabricated component 202 through the above-mentioned connection structure 100.
Specifically, the prefabricated component may be a concrete precast pile or a concrete precast pile cap or a concrete precast slab or a concrete precast wall or a concrete precast column or a concrete precast beam or a concrete precast balcony or a concrete precast bay window or a concrete precast stair or a concrete precast elevator shaft or a concrete precast roof or a concrete precast terrace, etc.
Preferably, each prefabricated part comprises a concrete body with a built-in rigid framework, and the rigid framework is provided with a plurality of stress ribs 203 distributed in an array; the stress bar 203 may be any one of round steel, screw steel, PC (Prestressed Concrete) steel bar, and the like, which can meet the requirement of building strength.
At least part of the force-bearing ribs 203 of one prefabricated part 201 are fixedly connected with a plug rod 20 at one end, and/or at least part of the force-bearing ribs 203 of the other prefabricated part 202 are connected with a plug sleeve 10 at one end.
Preferably, the stress bar 203 of the prefabricated member is sleeved with a screw connector at one end, and is sleeved with a connecting sleeve 205 at the other end, the inserting rod 20 is screwed on the screw connector, and the inserting sleeve 10 is screwed in the connecting sleeve 205.
Preferably, the two ends of the stress rib 203 of the prefabricated part are fixedly connected with the first end plate and the second end plate respectively, the inserted link 20 is installed on the first end plate, the inserted sleeve 10 is fixedly connected on the second end plate, preferably, the second end plate is provided with a containing hole which is concave in the surface of the second end plate, and the inserted sleeve 10 is arranged in the containing hole.
Under the service environment that has the corrosivity to metal such as acid-base, in order to avoid the atress muscle and the butt joint structure of two prefabricated components to rust because of exposing, can be at the terminal surface coating epoxy that the prefabricated component is connected, simultaneously, at grafting sleeve 10 intussuseption is filled with epoxy, moreover, through filling epoxy, can further improve the resistance to plucking performance of butt joint structure.
In the first to seventh embodiments, in the butt joint process of the butt joint structural member, the reducing plug 21 of the plug rod 20 is reversely clamped by the retaining member 30, so as to realize stable butt joint. Some technical implementations of the first to seventh embodiments may be combined or replaced.
The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is defined by the scope defined by the claims, and a plurality of modifications and decorations made by those skilled in the art without departing from the spirit and scope of the present invention should also be regarded as the protection scope of the present invention.
Claims (22)
1. A butt joint structural member, comprising:
the splicing sleeve is internally provided with a splicing cavity, and the splicing cavity is provided with more than two slideways on the cavity wall of the rear section at intervals along the circumferential direction;
one axial end of the insertion rod is provided with a reducing insertion head which can extend into the insertion cavity; and
more than two backstop pieces which can slide along the corresponding slide ways and reversely clamp the reducing plug-in connectors extending into the plug-in cavities;
the anti-return piece is provided with a first fan-shaped section perpendicular to the plugging direction, the slide way is provided with a second fan-shaped section perpendicular to the plugging direction, and when the circle center of the first fan-shaped section is coincident with that of the second fan-shaped section, the outer arc length L1 of the first fan-shaped section is larger than the inner arc length L2 of the second fan-shaped section.
2. The butt joint structural member according to claim 1, wherein the section of the splicing cavity perpendicular to the splicing direction is circular, and an arc angle α 1 corresponding to the slide way is greater than or equal to an arc angle α 2 corresponding to the wall of the splicing cavity between two adjacent slide ways;
the radial maximum size value of the retaining piece is larger than the maximum radial size value of the slideway.
3. A docking structure according to claim 1 wherein the runner comprises a first runner section which enables the sliding direction of the backstop and the insertion direction of the inserted bar to form an angle of 1 ° to 89 °.
4. The butt joint structural member according to claim 1, wherein an arc angle is provided between an outer arc of the first fan-shaped cross section and the two circumferential sides;
and/or an arc angle is formed between the inner arc of the first fan-shaped section and two circumferential side edges.
5. A docking structure according to claim 1 wherein the ramp has a reverse stop face of progressively increasing internal diameter away from the insertion entrance to the insertion cavity;
the reducing plug connector is provided with an anti-falling clamping surface;
the backstop is provided with an outer wedge surface corresponding to the reverse stop surface and an inner wedge surface corresponding to the anti-disengaging clamping surface;
the contained angle beta 1 of the interior wedge face profile generating line of stopping piece and outer wedge face profile generating line is greater than the contained angle beta 2 of reverse backstop face profile generating line and anti-disengaging joint face profile generating line, and when docking structure bore axial drawing power, the stopping piece verts so that outer wedge face profile generating line offsets with reverse backstop face profile generating line, and keeps away from on the stopping piece the one end at least part embedding of grafting entry reducing connector.
6. A docking structure according to claim 5 wherein the outer wedging surface of the backstop has a first surface hardness value HRC1The reverse stop surface has a second surface hardness value HRC2First surface hardness value HRC1Greater than the second surface hardness value HRC2And HRC1sinβ1cosβ2≤HRC2＜HRC1；
And/or the anti-slip joint surface has a third surface hardness value HRC3First surface hardness value HRC1Greater than a third surface hardness value HRC3And HRC1sin(β1+β2)cos(β1-β2)≤HRC3＜HRC1Wherein β 1 satisfies: beta 1 is more than or equal to 9 degrees and less than or equal to 80 degrees, and beta 2 meets the following requirements: beta 2 is more than or equal to 8 degrees and less than or equal to 79 degrees.
7. The butt joint structural part according to claim 1, wherein a gap Δ L is formed between the backstop and the slideway, and Δ L is more than or equal to 0.01mm and less than or equal to 5 mm;
on the section of the insertion sleeve perpendicular to the insertion direction, the sum of the lengths of the inner arcs of all the slide ways facing the insertion cavity accounts for 50-98% of the perimeter of the inner wall of the insertion sleeve;
the number of the retaining pieces is the same as that of the slide ways, and one retaining piece is arranged in each slide way;
on the section of the butt joint structural member perpendicular to the plugging direction, the length of an inner arc of all the backstop members in the slide way towards the plugging cavity accounts for 50-97% of the perimeter of the plugging sleeve.
8. The butt joint structural member according to claim 3, further comprising an elastic member, wherein the elastic member is a spring, and the spring is arranged at the rear section of the inserting cavity and pushes the stopping member towards the inserting inlet;
a gasket is arranged between the spring and the backstop piece;
a cover body is arranged at one end of the inserting sleeve far away from the inserting inlet, and two ends of the spring are respectively abutted against the retaining piece and the cover body;
a limiting bulge is arranged on one side, facing the inserting cavity, of the cover body, and one end, abutting against the cover body, of the spring is located on the inner side of the limiting bulge so as to limit the spring to move along any radial direction;
the cover body is clamped or inserted on the insertion sleeve, or the cover body is in threaded connection with the insertion sleeve.
9. The docking structure of claim 3, wherein the track further comprises a second slide segment behind the first slide segment such that a sliding direction of the backstop is substantially parallel to an insertion direction of the plunger.
10. The butt joint structural member according to claim 9, further comprising an elastic member, wherein the elastic member is a plate spring, the plate spring is at least arranged in the second sliding section, and one end of the plate spring abuts against the stopping member and the other end of the plate spring is fixed to one end of the plug-in sleeve away from the plug-in inlet, or one end of the plug-in sleeve away from the plug-in inlet is provided with a cover body, and the other end of the plate spring abuts against the cover body;
and one side of the plug-in sleeve, which is far away from the plug-in inlet, is sleeved with a hoop so as to limit the plate spring on the plug-in sleeve.
11. The docking structure of claim 10 wherein the axial length of the first slip segment is less than or equal to the axial length of the second slip segment.
12. A docking structure according to claim 3 wherein the wall thickness of the rear section of the socket cavity is less than the wall thickness of the front section of the socket cavity.
13. A docking structure according to claim 7 wherein Δ L is 0.01mm ≦ 1 mm.
14. A docking structure according to claim 7 wherein Δ L is 0.01mm 0.1 mm.
15. A docking structure according to claim 7 wherein Δ L is 0.01mm 0.05 mm.
16. A docking structure according to claim 7 wherein the inner arc length of all backstop members towards the plugging cavity is 65% to 80% of the perimeter of the plugging sleeve.
17. The butt joint structural member according to claim 8, wherein the plug-in sleeve is provided with a through hole for placing the spring on a cavity wall between two adjacent second sliding sections;
or a hoop is sleeved on one side, away from the inserting inlet, of the inserting sleeve, so that the spring is limited on the inserting sleeve.
18. A prefabricated component assembly comprising more than two prefabricated components which are sequentially butted in a linear direction, wherein the end part of one prefabricated component is butted with the end part of another prefabricated component through a butting structural member as claimed in any one of claims 1 to 17.
19. The prefabricated component assembly of claim 18, wherein each prefabricated component comprises a concrete body having a rigid skeleton embedded therein, the rigid skeleton having a plurality of stress bars arranged in an array;
and at least part of the stress ribs in one prefabricated component are fixedly connected with an inserting rod at one end part, and/or at least part of the stress ribs in the other prefabricated component are fixedly connected with an inserting sleeve at one end part.
20. The prefabricated component assembly of claim 19, wherein the reinforcement bar of the prefabricated component is sleeved with a screw connector at one end and a connection sleeve at the other end, the insertion rod is screwed on the screw connector, and the insertion sleeve is screwed in the connection sleeve.
21. The prefabricated component assembly of claim 19, wherein a first end plate and a second end plate are fixedly connected to two ends of a stress bar of the prefabricated component, the inserted link is mounted on the first end plate, the inserted sleeve is fixedly connected to the second end plate, the second end plate is provided with a receiving hole recessed in the surface of the second end plate, and the inserted sleeve is disposed in the receiving hole.
22. The prefabricated component assembly of claim 18, wherein the socket sleeve is filled with epoxy resin and/or the end faces of the prefabricated components are coated with epoxy resin when two adjacent prefabricated components are butted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020202962.6U CN212534072U (en) | 2020-02-24 | 2020-02-24 | Butt joint structural part and prefabricated part combination |
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| CN202020202962.6U CN212534072U (en) | 2020-02-24 | 2020-02-24 | Butt joint structural part and prefabricated part combination |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854201A (en) * | 2021-03-04 | 2021-05-28 | 天津建城基业集团有限公司 | Mechanical connecting fastener |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854201A (en) * | 2021-03-04 | 2021-05-28 | 天津建城基业集团有限公司 | Mechanical connecting fastener |
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