CN218757442U - Quick-insertion mechanical connection structure and prefabricated part thereof - Google Patents

Abstract

The utility model provides a quick-insertion mechanical connection structure and a precast pile thereof, which comprises an upper sleeve, a lower sleeve, an insertion rod, a middle nut, a connecting piece and an elastic element; one end of the upper sleeve and one end of the lower sleeve are respectively provided with a rib penetrating hole for connecting the main rib; one end of the inserted rod is arranged in the upper sleeve; the middle nut is arranged in the lower sleeve, and one end of the elastic element is arranged on the middle nut; the connecting piece is positioned in the elastic element, and the bottom of the elastic element supports the connecting piece and is used for enabling the middle nut to be in contact with the connecting piece; the inside ka tai that is equipped with of connecting piece, the dop of inserted bar passes middle nut and the ka tai joint in the connecting piece. The utility model discloses can make the butt joint of upper sleeve and lower sleeve, realize the mechanical connection of prefab and prefab through upper and lower sleeve, inserted bar, fastener and elastic element, can exempt from the welding during on-the-spot installation.

Description

Quick-insertion mechanical connection structure and prefabricated part thereof

Technical Field

The utility model relates to a prefab connection technical field, in particular to insert mechanical connection structure soon and precast pile thereof.

Background

The concrete precast pile for foundation engineering at present is connected by welding the end plates at the ends of adjacent piles when the pile is connected. The welding connection mode has high requirements on the technical level of constructors, is greatly influenced by the external weather and the level difference of field constructors, is easy to cause the quality difference of pile-to-pile welding, and is difficult to control the welding quality, so that the connection structure at the pile head of the precast pile has potential safety hazards.

In order to solve the quality hidden danger of on-site welding construction, partial projects adopt mechanical connection, so that the precast pile is free from welding during on-site installation, but the requirements of related mechanical connection accessories on installation personnel and the concrete quality of the end face of the pile are higher, and even the manufacturing cost of partial mechanical connection is higher than that of welding connection.

Disclosure of Invention

To exist not enough among the prior art, the utility model provides a fast mechanical connection structure of inserting realizes the mechanical connection of stake and stake through sleeve, inserted bar, fastener structure, can exempt from the welding during field installation, has simple structure, resistance to plucking and bears the weight of characteristics such as the dynamic height, cost are low, efficiency of construction height.

The utility model discloses a realize above-mentioned technical purpose through following technological means.

A quick-insertion mechanical connection structure comprises an upper sleeve, a lower sleeve, an insertion rod, a middle nut, a connecting piece and an elastic element; one end of the upper sleeve and one end of the lower sleeve are respectively provided with a rib penetrating hole for connecting the main rib; one end of the inserted link is arranged in the upper sleeve; the middle nut is arranged in the lower sleeve, and one end of the elastic element is arranged on the middle nut; the connecting piece is positioned in the elastic element, and the bottom of the elastic element supports the connecting piece; the inside ka tai that is equipped with of connecting piece, the dop of inserted bar passes middle nut and the ka tai joint in the connecting piece, realizes the mechanical connection of prefab and prefab through upper and lower sleeve, inserted bar, fastener and elastic element, can exempt from the welding during on-the-spot installation.

Furthermore, the elastic element comprises a clamping part, an elastic supporting part and a connecting part, and the clamping part is used for being connected to the middle nut; the elastic supporting part comprises a spring body and a bottom support; the clamping part is connected with one end of the spring body through a connecting part; the connecting piece is suspended in the air and arranged in the lower sleeve through the elastic element, so that the influence on the installation quality of the mechanical connecting structure in the installation process due to the existence of impurities such as mud blocks, stones and the like in the lower sleeve can be effectively prevented, and the installation quality of the inserted rod is ensured; in addition, the elastic supporting part wraps the connecting piece, and the bottom of the elastic supporting part supports the connecting piece, so that the middle nut and the connecting piece can be tightly combined together, and the middle nut and the connecting piece can be separated when being impacted.

Further, the collet is the radial plane helix that inwards extends of spring body other end along at least round, can avoid the inserted bar tip that inserts the connecting piece on the one hand, and furthest's reduction in weight when satisfying the support connecting piece is being satisfied to the other party, and the collet middle part is hollow structure moreover, even if there is debris to drop elastic element when the prefab docks, can not stop in the collet position yet, but can drop to in the lower sleeve.

Further, the bottom support is a plane spiral line which is connected between the other end of the spring body and the circle center of the spring body.

Furthermore, the total height of the elastic element with the height of 1/3-2/3 of the spring body is convenient for the chuck to open the connecting piece, and if the height of the spring body is larger than the total height of the elastic element with the height of 2/3, the chuck enables the expansion distance of the connecting piece to be smaller, and the connecting piece can only be suitable for inserting a plug with a smaller chuck diameter.

Furthermore, the clamping portion is a circle of spring, and one end of the spring is connected with one end of the spring body through the connecting portion.

Further, the other end of the spring is provided with a hem part; a gap is formed between the flanging part and one end of the spring, and the flanging part is fixed with the middle nut better.

Furthermore, the clamping part is at least provided with 2 support lugs, and the support lugs are used for being connected to the middle nut;

furthermore, a clamping groove is formed in the outer side of one end of the middle nut, and the clamping part is installed in the clamping groove; the clamping groove is provided with a notch communicated with the end face of the middle nut, and the connecting portion is located in the notch.

Furthermore, a clamping groove is formed in the outer side of one end of the middle nut, and the clamping portion is installed in the clamping groove; the clamping groove is at least provided with two notches communicated with the end face of the middle nut at intervals; the connecting part and the folding part are respectively positioned in the two notches or each support lug is positioned in the two notches.

Furthermore, the connecting piece is at least composed of two elastic steel sheets, the bottoms of the adjacent elastic steel sheets are connected, a gap is formed between the tops of the adjacent elastic steel sheets, and when the clamping head is inserted into the connecting piece, the tops of the elastic steel sheets are outwards opened.

Furthermore, a guide slope is arranged outside one end of the connecting piece, a spigot surface is arranged on the inner side of one end of the middle nut, and the connecting piece is supported by the bottom support, so that the spigot surface is in contact with the guide slope.

Furthermore, the connecting piece lateral wall is equipped with a plurality of through-holes for make things convenient for the connecting piece to open.

Furthermore, a first inner cavity and a second inner cavity which are communicated with each other are arranged in the lower sleeve, the diameter of the second inner cavity is larger than that of the first inner cavity, and the middle nut is arranged in the first inner cavity; the connecting piece and the elastic element are positioned in the second inner cavity, and can move in the radial direction under severe working conditions or extreme assembly conditions, and the second inner cavity provides a moving space for radial movement.

Furthermore, the neck of the inserted bar above the clamping head is provided with a unidirectional latch, and the inner hole of the connecting piece above the clamping table is provided with a latch matched with the unidirectional latch.

The prefabricated member with the quick-insertion mechanical connection structure comprises a plurality of main ribs, and is characterized in that the main ribs are positioned in rib penetrating holes of an upper sleeve or rib penetrating holes of a lower sleeve.

Further, a sheath is arranged on the pile hoop of the prefabricated member, one side surface of the sheath is connected with the pile hoop, and the other side surface of the sheath is arranged on the upper sleeve or the lower sleeve; the other side surface of the sheath is provided with a mounting hole; and a stop opening is arranged at the end face of the butt joint surface of the upper sleeve or the lower sleeve and is matched with the mounting hole.

Furthermore, the protective sleeve is L-shaped, and the included angle of two side surfaces of the L-shaped protective sleeve is 85-90 degrees.

The beneficial effects of the utility model reside in that:

1. insert mechanical connection structure soon, through the mechanical connection of upper and lower sleeve, inserted bar, fastener and elastic element realization prefab and prefab, can exempt from the welding during on-the-spot installation.

2. Insert mechanical connection structure soon, make the connecting piece unsettled and install in lower sleeve through elastic element, can prevent effectively that mechanical connection structure from influencing the installation quality in the installation, when having debris such as mud cake, stone in the lower sleeve to the installation quality of inserted bar has been ensured.

3. Insert mechanical connection structure soon, because the parcel of resilient support portion is outside the connecting piece, and the resilient support portion bottom sprag connecting piece, can be in the same place the inseparable combination of middle nut and connecting piece like this, can make middle nut and connecting piece separation when receiving the impact moreover.

4. Insert mechanical connection structure soon, be equipped with the first inner chamber and the second inner chamber of mutual intercommunication in the lower sleeve, the diameter of second inner chamber is greater than the diameter of first inner chamber, connecting piece and elastic element are located the second inner chamber, when perhaps the extreme assembly condition takes place under abominable operating mode, connecting piece and elastic element can produce radial removal, and the second inner chamber provides the removal space for radial movement.

5. Have fast inserting mechanical connection structure's prefab, install the sheath on the stake cuff of prefab, a sheath side is connected with stake cuff, sheath another side-mounting is on upper sleeve or lower sleeve, and through the tip to upper nut and lower nut setting up the backstop mouth, the mounting hole and the cooperation of backstop mouth of sheath make the precast pile ensure stake cuff and concrete end face parallel and level when producing, prevent to influence the installation that connects when being higher than concrete pile end face because of stake cuff.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for the description of the embodiments or the prior art will be briefly described below, and the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an assembly drawing of the quick-insertion mechanical connection structure of the present invention.

Fig. 2 is a three-dimensional diagram of the elastic element design 1 according to the present invention.

Fig. 3 is a three-dimensional view of the elastic element design 2 according to the present invention.

Fig. 4 is a three-dimensional diagram of the design 3 of the elastic element according to the present invention.

Fig. 5 is a three-dimensional diagram of the elastic element design 4 according to the present invention.

Fig. 6 is a three-dimensional view of the design 5 of the elastic element according to the present invention.

Fig. 7 is a three-dimensional view of the design 6 of the elastic element according to the present invention.

Fig. 8 is a cross-sectional view of the elastic element design 7 according to the present invention.

Fig. 9 is a cross-sectional view of the middle nut of the present invention.

Fig. 10 is a left side view of the middle nut design 1 according to the present invention.

Fig. 11 is a left side view of the middle nut design 2 of the present invention.

Fig. 12 is a cross-sectional view of the connector design 1 according to the present invention.

Fig. 13 is a top view of the connector design 1 according to the present invention.

Fig. 14 is a three-dimensional view of the connector design 2 according to the present invention.

Fig. 15 is a cross-sectional view of the lower sleeve of the present invention.

Fig. 16 is a schematic diagram of the butt joint of the prefabricated members according to the present invention.

Fig. 17 is a schematic view of the installation of the middle nut, the elastic element and the connecting member according to the present invention.

Fig. 18 is a three-dimensional view of the sheath of the present invention.

Fig. 19 is an assembly view of the connecting member and the insertion rod according to the present invention.

In the figure:

1-upper sleeve; 2-lower sleeve; 2-1-a first lumen; 2-2-a second lumen; 3, inserting a rod; 3-1-chuck; 4-middle nut; 4-1-a spigot surface; 4-2-card slot; 4-3-notch; 5-a connector; 5-1-guiding slope; 5-2-clamping table; 5-3-convex; 6-an elastic element; 6-1-a clamping part; 6-2-spring body; 6-3-linker; 6-4-collet; 6-5-hem portion; 6-6-lugs; 6-6-1-straight line segment; 6-6-2-arc segment; 7-main reinforcement; 8-a sheath; 8-1-mounting holes; 9-pile hoops; 10-stop opening.

Detailed Description

The invention will be further described with reference to the drawings and the following examples, but the scope of the invention is not limited thereto.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

As shown in fig. 1, the quick-insertion mechanical connection structure of the present invention comprises an upper sleeve 1, a lower sleeve 2, an insertion rod 3, a middle nut 4, a connecting piece 5 and an elastic element 6; one end of the upper sleeve 1 and one end of the lower sleeve 2 are respectively provided with a rib penetrating hole connected with a main rib 7; one end of the inserted link 3 is arranged in the upper sleeve 1; the middle nut 4 is arranged in the lower sleeve 2, and one end of the elastic element 6 is arranged on the middle nut 4; the connecting piece 5 is positioned inside the elastic element 6, and the bottom of the elastic element 6 supports the connecting piece 5; a clamping table 5-2 is arranged in the connecting piece 5, and a clamping head 3-1 of the inserted bar 3 penetrates through the middle nut 4 to be clamped with the clamping table 5-2 in the connecting piece 5, so that the upper sleeve 1 is in butt joint with the lower sleeve 2. Insert mechanical connection structure soon and realize the mechanical connection of prefab and prefab through upper and lower sleeve, inserted bar, fastener and elastic element, can exempt from the welding during on-the-spot installation. Meanwhile, the connecting piece is suspended and arranged in the lower sleeve through the elastic element, so that the mechanical connecting structure can be effectively prevented from influencing the installation quality in the installation process due to the existence of impurities such as mud blocks, stones and the like in the lower sleeve, and the installation quality of the inserted bar is ensured.

The design 1 of the elastic element 6 of the utility model is as shown in fig. 2, the elastic element 6 comprises a clamping part 6-1, an elastic supporting part and a connecting part 6-3, and the clamping part 6-1 is used for connecting to the middle nut 4; the elastic supporting part comprises a spring body 6-2 and a bottom support 6-4; the spring body 6-2 is a cylindrical tension spring; the upper part of the spring body 6-2 is connected with the clamping part 6-1 through the connecting part 6-3, and the connecting part 6-3 is cylindrical and has the same wire diameter as the spring body 6-2. The clamping portion 6-1 is a ring of spring and can be regarded as a ring of a fracture, and the outer diameter of the ring of the fracture is not smaller than that of the spring body 6-2. One end of the circular ring is connected with the upper part of the spring body 6-2 through a connecting part 6-3. The ring of fracture accessible external force struts the back joint at middle nut 4 surface. The bottom support 4 is a plane spiral line connecting the lower part of the spring body 2 and the circle center of the spring body 2. The planar spiral in fig. 2 is similar to a planar vortex. Gaps smaller than the wire diameter of the spiral wire can be arranged between every two circles of spiral wires of the plane spiral wire, and gaps can be eliminated. In fig. 2, it can be seen that the flat spiral completely closes the lower end face of the spring body 2. The spring body 2 is used for wrapping the outside of the connecting piece, and the bottom support 4 is used for supporting the connecting piece.

The elastic element 6 of the utility model is designed 2 as shown in fig. 3, on the basis of the design 1, the other end of the circular ring is provided with a flanging part 6-5, and a gap is arranged between the flanging part 6-5 and one end of the circular ring. The edge folding part 6-5 can be vertical to the circular ring, and the included angle between the edge folding part 6-5 and the connecting part 6-3 can also be an acute angle.

The design 3 of the elastic element 6 of the utility model is shown in fig. 4, and on the basis of the design 1, the bottom support 6-4 is a semi-closed structure; the bottom support 6-4 is 3 circles of plane spiral lines extending inwards along the radial direction of the other end of the spring body 6-2. Extending radially inward can be understood from fig. 4 as extending radially toward the center of the spring body 6-2. The extended 3 turns of the flat spiral may support the connector 5. But if the diameter of the extended planar helix is sufficiently large, only 1 turn of the helix may be required to support the connector 5. In fig. 4 it can be seen that the planar spiral partially closes the lower end face of the spring body 2. On one hand, the end part of the inserting rod 3 inserted into the connecting piece 5 can be avoided, on the other hand, the supporting connecting piece 5 is supported, meanwhile, the weight is reduced to the maximum extent, the middle part of the bottom support 6-4 is of a hollow structure, namely a semi-closed structure, and even if sundries drop into the spring body 6-2 when the prefabricated part is in butt joint, the sundries can not stay at the position of the bottom support 6-4 and drop into the lower sleeve 2, so that the situation that the butt joint quality is influenced by the sundries existing in the elastic supporting part can be avoided.

The design 4 of the elastic element 6 of the utility model is shown in fig. 5, and on the basis of the design 2, the bottom support 6-4 is a semi-closed structure; the bottom support 6-4 is 3 circles of plane spiral lines extending inwards along the radial direction of the other end of the spring body 6-2. The planar spiral partially closing the lower end face of the spring body 6-2 can be seen in fig. 5.

The elastic element 6 of the utility model is designed 5 as shown in fig. 6, and on the basis of any design 1-4, the spring body 6-2 is a conical tension spring, because the outside of the connecting piece 5 is a conical surface.

The elastic element 6 of the utility model is designed as shown in fig. 7, and on the basis of any design 1-5, the circular ring is provided with 2 support lugs 6-6, and the support lugs 6-6 are used for being connected on the middle nut 4. The support lug 6-6 comprises a straight line section 6-6-1 and an arc section 6-6-2; two ends of the circular arc section 6-6-2 are respectively connected with one end of the straight line section 6-6-1, and the other end of the straight line section 6-6-1 is connected with the circular ring. And the other ends of the two straight line segments 6-6-1 are not provided with a connecting part of a circular ring. The number of the lugs 6-6 on the ring can be multiple, which is determined according to the diameter of the middle nut 4.

The utility model discloses elastic element 6 designs 7 as shown in figure 8, on the arbitrary basis of design 1-7, the external diameter of joint portion 6-1 is greater than spring body 6-2's external diameter, spring body 6-2 highly be 1/3 ~ 2/3's elastic element 6 total height, make things convenient for the dop to strut the connecting piece like this, if spring body's height is greater than 2/3's elastic element total height, the dop makes the distance that connecting piece 5 expandes receive outside spring body 6-2's influence so, and connecting piece 5 expandes the distance less like this, can only be fit for the less plug of dop diameter to insert.

As shown in fig. 9, a taper hole is formed in the middle nut 4, an annular clamping groove 4-2 is formed in the outer side of one end of the middle nut 4, and the clamping portion 6-1 is installed in the annular clamping groove 4-2. In order to avoid the connecting part 6-3, a notch 4-3 communicated with the end face of the middle nut 4 is arranged on the clamping groove 4-2, as shown in fig. 10; the connecting portion 6-3 is located in the notch 4-3.

As shown in fig. 11, in order to install the clamping portion 6-1 with the hem portion 6-5 or the clamping portion 6-1 with the support lug 6-6, a clamping groove 4-2 is formed in the outer side of one end of the middle nut 4, and the clamping portion 6-1 is installed in the clamping groove 4-2; the clamping groove 4-2 is at least provided with two notches 4-3 communicated with the end face of the middle nut 4 at intervals; the connecting part 6-3 and the folding part 6-5 are respectively positioned in the two notches 4-3 or each support lug 6-6 is positioned in the two notches 4-3, and the broken line part in the figure is an installation schematic diagram of the support lug 6-6.

The connecting piece 5 of the utility model is designed 1 as shown in fig. 12 and fig. 13, the connecting piece 5 is composed of four elastic steel sheets, the bottoms of the elastic steel sheets are connected, the top of the elastic steel sheets are adjacent to each other, and a gap is arranged at the top of each elastic steel sheet, when the clamping head 3-1 is inserted into the connecting piece 5, the top of each elastic steel sheet is opened outwards, so that the clamping head 3-1 and the clamping table 5-2 in the connecting piece 5 can be conveniently clamped. A guide slope 5-1 is arranged outside one end of the connecting piece 5, a spigot surface 4-1 is arranged on the inner side of one end of the middle nut 4, and the connecting piece 5 is supported by the bottom support 4, so that the spigot surface 4-1 is in contact with the guide slope 5-1. The inside of the connecting piece 5 is provided with a clamping table 5-2, the bottom of the connecting piece 5 is provided with a bulge 5-3 along the circumferential direction, and the bulge 5-3 can ensure the strength of the bottom of the connecting piece 5 when the connecting piece is unfolded.

The utility model discloses connecting piece 5 design 2 is as shown in fig. 14, the communicating opening in a hole in the middle of with connecting piece 5 is opened from the top down to the side of connecting piece 5 along the axial, through dop 3-1 inserts connecting piece 5, makes connecting piece 5 open. The connecting piece 5 is provided with a flat straight line opening from top to bottom along the side surface parallel to the axis. Or the side surface of the connecting piece 5 is provided with an oblique line opening from top to bottom, so that the opening is arranged at one side of the inner wall of the connecting piece 5 and one side of the outer wall of the connecting piece 5 in a staggered manner. As seen from the top view, the inner side and the outer side of the opening are not in the same straight line in the radial direction, so that the connecting piece 5 can be uniformly stressed in the whole circumferential direction when being pulled, and the condition of the defect can not occur. A guide slope 5-1 is arranged outside one end of the connecting piece 5, a spigot surface 4-1 is arranged on the inner side of one end of the middle nut 4, and the connecting piece 5 is supported by the bottom support 4, so that the spigot surface 4-1 is in contact with the guide slope 5-1. The side wall of the connecting piece 5 is provided with a plurality of through holes.

One end of the inserted rod 3 is provided with threads for connecting with the upper sleeve 1; the other end of the inserted bar 3 is provided with a clamping head 3-1. The end part of the chuck 3-1 is provided with a chamfer or a fillet, so that the chuck can be conveniently inserted into the fastener 5. As shown in fig. 19, a neck portion 3-2 is arranged between the thread end of the insert rod 3 and the chuck 3-1, one-way latch teeth are arranged on the neck portion 3-2, and latch teeth matched with the one-way latch teeth are arranged in an inner hole between the clamping table 5-2 and the guide slope 5-1 of the connecting piece 5, so that the connection is firmer, and the clamping failure can be prevented when the clamping table 3-1 and the clamping table 5-2 are not clamped well.

As shown in fig. 15, a first inner cavity 2-1 and a second inner cavity 2-2 which are communicated with each other are arranged in the lower sleeve 2, the diameter of the second inner cavity 2-2 is larger than that of the first inner cavity 2-1, and the middle nut 4 is arranged in the first inner cavity 2-1; the connector 5 and the elastic element 6 are located in the second lumen 2-2. Under severe conditions or extreme assembly conditions, the connecting piece and the elastic element can move in the radial direction, and the second inner cavity provides a moving space for radial movement.

As shown in fig. 16, the prefabricated member with the fast inserting mechanical connection structure of the present invention includes a plurality of main ribs 7, a plurality of fast inserting mechanical connection structures are disposed between two butted prefabricated members, an upper sleeve 1 is pre-embedded in a first prefabricated member, and the main ribs 7 of the first prefabricated member are located in rib holes of the upper sleeve 1; the lower sleeve 2 is pre-buried in the second prefabricated member, and the main ribs 7 of the second prefabricated member are positioned in the rib penetrating holes of the sleeve 2.

And a protective sleeve 8 is arranged on the pile ferrule 9 of the prefabricated member, one side surface of the protective sleeve 8 is connected with the pile ferrule 9, and the other side surface of the protective sleeve 8 is arranged on the upper sleeve 1 or the lower sleeve 2. The jacket 8 may be of unitary construction with the pile ferrule 9.

As shown in fig. 18, the other side surface of the sheath 8 is provided with a mounting hole 8-1; the end face of the butt joint surface of the upper sleeve 1 or the lower sleeve 2 is provided with a stop opening 10, and the mounting hole 8-1 and the stop opening 10 can be in threaded fit or sleeved fit. The protective sleeve is L-shaped, and the included angle of two side surfaces of the L-shaped protective sleeve is 85-90 degrees. When the jacket 8 is used for an end-plate-less preform, the stopper 10 is adapted to cooperate with the jacket 8 to prevent the upper sleeve 1 or the lower sleeve 2 from being misaligned with the jacket 8.

Prefab butt joint process with insert mechanical connection structure soon do:

s01: placing the precast pile with the upper sleeve 1 or the lower sleeve 2, the pile hoops 9 and the sheaths 8 in a finished precast pile stacking site;

s02: constructing the precast pile, enabling the pile head of the first precast pile to be 0.5-1.5 meters away from the ground, and cleaning the surface of the pile head of the first precast pile;

s03: installing the connecting piece 5 in the elastic element 6, and installing the elastic element 6 on the clamping groove of the middle nut 4, so that the middle nut 4, the elastic element 6 and the connecting piece 5 form an integrated structure, as shown in fig. 17;

s04: then, hoisting the second precast pile to a position 0.2-0.5 m above the pile head of the first precast pile, and cleaning the surface of the pile head of the second precast pile;

s05: installing an inserted rod 3 in an upper sleeve 1 of a first precast pile, and installing an intermediate nut 4 in a lower sleeve 2 of a second precast pile;

s06: uniformly coating a sealing material on the surface of the pile head of the first precast pile;

s07: aligning the first precast pile and the second precast pile, aligning the centers of the inserted bars 3 with the center of the lower sleeve 2 one by one, and slowly lowering the first precast pile to enable the clamping heads 3-1 of the inserted bars 3 to be inserted into the lower sleeve 2 and buckled with the clamping tables 5-2 of the connecting piece 5;

s08: and constructing the connected first precast pile and the second precast pile to the elevation of the design requirement, and finally completing the installation and construction of the joint.

It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The above-listed detailed description is only a specific description of possible embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present invention should be included within the scope of the present invention.

Claims (19)

1. A quick-insertion mechanical connection structure is characterized by comprising an upper sleeve (1), a lower sleeve (2), an insertion rod (3), a middle nut (4), a connecting piece (5) and an elastic element (6); one end of the upper sleeve (1) and one end of the lower sleeve (2) are respectively provided with a rib penetrating hole connected with a main rib (7); one end of the inserted rod (3) is arranged in the upper sleeve (1); the middle nut (4) is arranged in the lower sleeve (2), and one end of the elastic element (6) is arranged on the middle nut (4); the connecting piece (5) is positioned inside the elastic element (6), and the bottom of the elastic element (6) supports the connecting piece (5); the connecting piece (5) is internally provided with a clamping table (5-2), and a clamping head (3-1) of the inserted bar (3) penetrates through the middle nut (4) to be clamped with the clamping table (5-2) in the connecting piece (5) so as to enable the upper sleeve (1) to be in butt joint with the lower sleeve (2).

2. The quick-insertion mechanical connection structure according to claim 1, wherein the elastic element (6) comprises a clamping portion (6-1), an elastic support portion and a connecting portion (6-3), and the clamping portion (6-1) is used for being connected to the middle nut (4); the elastic supporting part comprises a spring body (6-2) and a bottom support (6-4); the clamping part (6-1) is connected with one end of the spring body (6-2) through the connecting part (6-3); the other end of the spring body (6-2) is provided with a bottom support (6-4), the connecting piece (5) is positioned in the elastic element (6), and the bottom support (6-4) supports one end of the connecting piece (5).

3. A quick-connect mechanical connection according to claim 2, characterized in that the shoe (6-4) is at least one flat spiral extending radially inwards along the other end of the spring body (6-2).

4. The quick-insertion mechanical connection structure according to claim 2, wherein the bottom support (6-4) is a plane spiral line connecting the other end of the spring body (6-2) to the center of the spring body (6-2).

5. Quick-insertion mechanical connection according to claim 2, characterized in that the height of the spring body (6-2) is 1/3 to 2/3 of the total height of the elastic element (6).

6. The quick-insertion mechanical connection structure according to claim 2, wherein the clamping portion (6-1) is a ring of spring, and one end of the spring is connected with one end of the spring body (6-2) through a connecting portion (6-3).

7. A quick-connect mechanical connection according to claim 6, characterized in that the other end of the spring is provided with a hem (6-5); a gap is arranged between the hem part (6-5) and one end of the spring.

8. The quick-insertion mechanical connection structure as claimed in claim 6, wherein the clamping portion (6-1) is provided with at least 2 support lugs, and the support lugs are used for being connected to the middle nut.

9. The quick-insertion mechanical connection structure according to any one of claims 2 to 6, wherein a clamping groove (4-2) is formed in the outer side of one end of the middle nut (4), and the clamping portion (6-1) is installed in the clamping groove (4-2); the clamping groove (4-2) is provided with a notch (4-3) communicated with the end face of the middle nut (4), and the connecting portion (6-3) is located in the notch (4-3).

10. The quick-insertion mechanical connection structure according to claim 7, wherein a clamping groove (4-2) is formed in the outer side of one end of the middle nut (4), and the clamping portion (6-1) is installed in the clamping groove (4-2); the clamping groove (4-2) is at least provided with two notches (4-3) communicated with the end face of the middle nut (4) at intervals; the connecting part (6-3) and the folding part (6-5) are respectively positioned in the two notches (4-3).

11. The quick-insertion mechanical connection structure according to claim 8, wherein a clamping groove (4-2) is formed in the outer side of one end of the middle nut (4), and the clamping portion (6-1) is installed in the clamping groove (4-2); the clamping groove (4-2) is at least provided with two notches (4-3) communicated with the end face of the middle nut (4) at intervals; each support lug (6-6) is positioned in two notches (4-3).

12. A quick-insertion mechanical connection according to any one of claims 1 to 8, wherein the connecting member (5) is composed of at least two resilient steel plates, the bottom portions of the resilient steel plates are connected adjacent to each other, and a gap is provided between the top portions of the resilient steel plates adjacent to each other, so that the top portions of the resilient steel plates are opened outward when the cartridge (3-1) is inserted into the connecting member (5).

13. The quick-insertion mechanical connection structure according to claim 12, wherein a guide slope (5-1) is provided outside one end of the connecting member (5), a stop surface (4-1) is provided inside one end of the middle nut (4), and the connecting member (5) is supported by the bottom support (6-4) so that the stop surface (4-1) is in contact with the guide slope (5-1).

14. Quick-insertion mechanical connection according to claim 13, characterised in that the side walls of the connection element (5) are provided with through holes.

15. The quick-insertion mechanical connection structure according to any one of claims 1 to 8, wherein a first inner cavity (2-1) and a second inner cavity (2-2) which are communicated with each other are arranged in the lower sleeve (2), the diameter of the second inner cavity (2-2) is larger than that of the first inner cavity (2-1), and the intermediate nut (4) is arranged in the first inner cavity (2-1); the connecting piece (5) and the elastic element (6) are positioned in the second inner cavity (2-2).

16. A quick-insertion mechanical connection according to any one of claims 1 to 8, characterized in that the neck of the insertion rod (3) above the cartridge (3-1) is provided with a one-way latch, and the inner bore of the connecting piece (5) above the bayonet (5-2) is provided with a latch matching the one-way latch.

17. A prefabricated member having a quick-connect mechanical connection structure according to any one of claims 1 to 16, said prefabricated member comprising a plurality of main ribs (7), wherein said main ribs (7) are located in the rib-through holes of said upper sleeve (1) or the rib-through holes of said lower sleeve (2).

18. A preform according to claim 17, characterised in that a jacket (8) is mounted on the pile ferrule (9) of the preform, the jacket (8) being connected on one side to the pile ferrule (9) and the jacket (8) being mounted on the other side on the upper sleeve (1) or the lower sleeve (2); the other side surface of the sheath (8) is provided with a mounting hole (8-1); the butt joint face end face of the upper sleeve (1) or the lower sleeve (2) is provided with a stop opening (10), and the stop opening (10) is matched with the mounting hole (8-1).

19. The preform of claim 18, wherein the jacket is L-shaped, and wherein the L-shaped jacket has two sides that are angled between 85 ° and 90 °.

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