CN212405127U - Mechanical connection joint device - Google Patents

Abstract

The utility model provides a mechanical connection connects device. The device comprises an upper nut, a lower nut, an insertion rod, a limiting connecting sleeve, a buckling barrel, an elastic element and a bottom support, wherein the upper part of the insertion rod is arranged in the upper nut; the elastic element is placed on the bottom support, the buckling cylinder is placed above the elastic element, and a clamping table is arranged inside the upper end of the buckling cylinder; the lower part of the inserted link is sequentially provided with a conical section, a cylindrical section and a chuck, and the chuck is inserted into the buckling cylinder and is buckled with the clamping table; the limiting connecting sleeve is of a through hole structure, an upper inclined line segment, a straight line segment and a lower inclined line segment are sequentially arranged in the through hole, and the lower inclined line segment is in contact with the upper end face of the clamping table. The utility model discloses a device can effectively improve installation quality and the efficiency that the pile head is connected.

Description

Mechanical connection joint device

Technical Field

The utility model relates to a building connection spare technical field especially relates to a mechanical connection piecing devices.

Background

At present, the precast pile used for the pile foundation of the building is mostly connected with the pile by adopting the form of electric welding and welding of end plates. The welding mode easily causes potential safety hazards of the connecting structure at the pile head of the precast pile. The mechanical connection joint device can lead the pile to be free from welding when being installed on site, and has the advantages of simple structure, high uplift bearing capacity, low manufacturing cost, high construction efficiency and the like.

In the Chinese patent CN101519876A, the name "no-shear fast strong-pull butt-joint fastener and butt-joint piece", a spring is arranged in a top-pull nut, the bottom end of the spring is placed on a clamping table or a heading of a steel bar heading, and a conical sleeve is placed at the top end of the spring. In fact, in the production process of the precast pile, the finished shape of the steel bar upset head is greatly different due to equipment or human reasons, the steel bar upset head is not in a completely symmetrical shape or the top end of the upset head is not completely planar. If the upset head is irregular, one side of the upset head directly contacts the inner wall of the top pull nut or the top end plane of the upset head inclines, so that the installation of the spring is inclined, the bottom end or the top end cannot be kept horizontal, and finally, a conical sleeve on the top end of the spring is inclined, and the installation is hidden danger. In addition, the structures of the above patents are all contacted by metal pieces, so that an integral closed space cannot be effectively formed, and the corrosion resistance of the joint is greatly reduced.

In the Chinese patent CN208578028U, entitled "a connecting joint device and a prestressed prefabricated member", a limit table, a limit nut, a spring and a buckle barrel are directly arranged in a nut. Although set up spacing platform and help keeping the level and smooth of detaining a section of thick bamboo bottom, when actual installation, if the spring unevenness of bottom, then at the insertion of inserted bar in-process, detain the unable simultaneous contact stop collar in bottom of a section of thick bamboo, lead to easily detaining a section of thick bamboo and receive the effect of eccentric force to can damage the ka tai of detaining a section of thick bamboo upper portion, greatly influence the connection quality that connects.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mechanical connection piecing devices can effectively improve the installation quality and the efficiency that the pile head is connected.

In order to achieve the purpose of the invention, the utility model adopts the technical scheme that:

a mechanical connection joint device comprises an upper nut, a lower nut, an insert rod, a limiting connecting sleeve, a buckling barrel, an elastic element and a bottom support, wherein the upper part of the insert rod is arranged in the upper nut; the elastic element is placed on the bottom support, the buckling cylinder is placed above the elastic element, a clamping table is arranged inside the upper end of the buckling cylinder, and the bottom of the buckling cylinder protrudes outwards along the circumferential direction; the lower part of the insert rod is sequentially provided with a conical section, a cylindrical section and a chuck, and the chuck is inserted into the buckling barrel and is buckled with the clamping table; the limiting connecting sleeve is of a through hole structure, an upper oblique line section for containing the conical section of the inserting rod, a straight line section for containing the cylindrical section of the inserting rod and a lower oblique line section are sequentially arranged in the through hole, and the lower oblique line section is in contact with the upper end face of the clamping table.

Furthermore, the outer diameter of the lower part of the limiting connecting sleeve is smaller than that of the upper part of the limiting connecting sleeve; and a gap is reserved between the outer wall of the lower part of the limiting connecting sleeve and the inner wall of the lower nut.

Further, the upper end of spacing adapter sleeve is provided with the installation department, and the installation department is the recess or the boss of symmetry setting.

Preferably, the included angle between the lower inclined line segment of the limiting connecting sleeve and the horizontal line is less than or equal to 45 degrees.

Furthermore, the connecting joint device further comprises a sealing ring, wherein the sealing ring is arranged at the joint of the upper nut and the lower nut, or at the joint of the inserted rod and the limiting connecting sleeve, or at the joints of the two.

Further, a flat line segment is further arranged between the straight line segment and the lower inclined line segment of the limiting connecting sleeve.

Furthermore, the upper end face of the buckling cylinder is provided with a guide slope, and the guide slope is in contact with a lower slope segment of the limiting connecting sleeve.

Furthermore, the buckling cylinder is in a chrysanthemum shape consisting of a plurality of elastic steel sheets, or an opening is formed in the side surface of the buckling cylinder from top to bottom along the axial direction, and the opening is communicated with a middle hole of the buckling cylinder.

Furthermore, the openings are positioned on two sides of the inner wall and the outer wall of the buckling barrel and are arranged in a staggered mode along the radial direction; or two ports of the opening, which are positioned at the upper end and the lower end of the buckle barrel, are arranged in a staggered way along the axial direction; or both of the above-mentioned offset arrangements.

Further, the cross section of the opening is in a sawtooth shape.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model discloses a connect through nut, inserted bar, detain a isotructure and realize the mechanical connection of stake and stake, have simple structure, resistance to plucking and bear the weight of the dynamic height, the cost is low, the efficiency of construction is high, exempts from welded characteristics during the field installation.

(2) Through setting up spacing adapter sleeve, elastic element and collet, can make the centre detain a section of thick bamboo and fix in the spacing space of settlement, prevent in the installation, detain a section of thick bamboo and take place lateral shifting to the installation quality of inserted bar has been ensured.

(3) The clamping groove is formed in the lower portion of the limiting connecting sleeve, the boss is arranged on the bottom support, the limiting connecting sleeve and the bottom support can be connected to form a whole, only the inserting rod, the bottom support, the elastic element, the middle buckling barrel and the limiting connecting sleeve are required to be installed during installation, and the workload of field workers is greatly reduced.

(4) Through installing spacing adapter sleeve in advance in the place of piling up and detaining adapting unit such as a section of thick bamboo, elastic element and collet, on-the-spot installer only can accomplish the installation with section pile disect insertion from top to bottom, can reduce on-the-spot personnel's work load by a wide margin.

(5) A gap is reserved between the bottom end of the limiting connecting sleeve and the bottom end of the lower nut, so that a certain space interval is kept between the bottom support and the upset head, and therefore when the connector is installed on site, even if the lower nut causes sundries such as soil to enter the lower nut or the processing quality error of the upset head is large due to carrying, the installation quality of the lower nut cannot be influenced, and the influences of weather, environment and the like outside the site are greatly reduced.

(6) A gap is reserved between the outer wall of the lower part of the limiting connecting sleeve and the inner wall of the lower nut, so that the problem that the sealing cylinder cannot be installed in the lower nut due to machining errors of the inner wall of the lower nut can be solved.

(7) The button cylinder of the utility model is arranged in chrysanthemum shape, which can make the spring plate be more easily stretched and tightened; detain a section of thick bamboo and set up to open structure, be the wholeness contact mode when contacting with the inserted bar, furthest has ensured the tensile properties who detains a section of thick bamboo, when connecting to the very high joint of tensile requirement, need not increase and detain a section of thick bamboo and telescopic size and can satisfy the requirement.

(8) Through setting up the sealing washer, form holistic enclosure space behind the messenger joint connection, promote the durability of joint when using in the anti-corrosion geology.

Drawings

Fig. 1 is a schematic structural diagram of the device in the connection state of the present invention.

Fig. 2 is a schematic structural diagram of the device of the present invention in an unconnected state.

Fig. 3 is a schematic structural diagram of the shoe in the embodiment.

Fig. 4 is a plurality of structural schematic diagrams of the buckle barrel in the embodiment, (a) and (b) are respectively a perspective view and a sectional view of a C-shaped opening, (C) and (d) are respectively a perspective view and a sectional view of staggered arrangement of the inner side and the outer side of the opening, (e) and (f) are respectively a perspective view and a sectional view of staggered arrangement of the upper end and the lower end of the opening, and (g) and (h) are respectively a perspective view and a sectional view of a zigzag opening.

In the figure, 1-upper nut, 2-lower nut, 3-inserted rod, 4-limiting connecting sleeve, 5-buckling barrel, 6-elastic element, 7-bottom support, 8-mounting groove, 9-clamping groove, 10-conical section, 11-cylindrical section, 12-clamping head, 13-clamping table, 14-guide slope, 15-upper inclined line section, 16-straight line section, 17-lower inclined line section, 18-flat line section, 19-reinforcing steel bar, 20-sealing ring and 21-boss.

Detailed Description

The invention will be elucidated below on the basis of an embodiment shown in the drawing. The embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is not limited by the following description of the embodiments, but is defined only by the scope of the claims, and includes all modifications that have the same meaning as the scope of the claims and are within the scope of the claims.

The embodiment provides a mechanical connection joint device, which comprises an upper nut 1, a lower nut 2, an insert rod 3, a limiting connecting sleeve 4, a buckling barrel 5, an elastic element 6 and a bottom support 7. The head of the inserted rod 3 is a cylindrical head provided with a limiting thread and is connected with the internal thread of the upper nut 1; the lower part of the inserted bar 3 is sequentially provided with the conical section 10, the cylindrical section 11 and the bottom chuck 12, in order to ensure the strength of the inserted bar 3, the length ratio of the cylindrical section 11 to the conical section 10 is preferably 1: 2-3, the stress concentration at the joint of the top and the bottom of the inserted bar can be greatly reduced, and the strength of the inserted bar is ensured. In order to avoid safety hazards, the height of the cylindrical section 11 is set to be higher than that of the buckling barrel 5, so that the cylindrical section 11 is completely in linear contact with the inner cavity of the buckling barrel 5, and preferably, the height of the cylindrical section 11 is at least 1.1 times higher than that of the buckling barrel 5.

The limiting connecting sleeve 4, the buckling barrel 5, the elastic element 6 and the bottom support 7 are arranged in the lower nut 2. The outside of the limiting connecting sleeve 4 is provided with an external thread which is connected with the internal thread of the lower nut 2. The upper end of the limiting connecting sleeve 4 is provided with a mounting groove 8, which is convenient to mount. The lower end of the limit connecting sleeve 4 is provided with a clamping groove 9 (or a boss), correspondingly, as shown in fig. 3, the outer circumference of the bottom support 7 is provided with a boss 21 (or a groove), the boss 21 is clamped in the clamping groove 9, and the bottom support 7 and the limit connecting sleeve 4 are connected into a whole. The elastic element 6 is arranged on the shoe 7. The limiting connecting sleeve 4 is of a through hole structure, an upper oblique line section 15 for containing the inserting rod conical section 10, a straight line section 16 for containing the inserting rod cylindrical section 11, a flat line section 18 and a lower oblique line section 17 are sequentially arranged in the through hole, the flat line section 18 enables the force borne by the buckling barrel 5 to be vertical force, and the force borne by the through hole of the limiting connecting sleeve 4 is the largest. Preferably, the included angle between the lower inclined line segment 17 and the horizontal line is less than or equal to 45 degrees, so that the maximum tensile force can be borne at the position, and the mechanical property of the limiting connecting sleeve 4 is fully exerted. In this embodiment, the outer diameter of the lower portion of the limiting connection sleeve 4 is smaller than the outer diameter of the upper portion of the limiting connection sleeve 4, and a gap is left between the outer wall of the lower portion of the limiting connection sleeve 4 and the inner wall of the lower nut 2. A gap is also left between the bottom end of the bottom support 7 and the bottom end of the lower nut 2.

The buckle barrel 5 is placed above the elastic element 6. The inside card platform 13 that is provided with in the upper end of detaining a section of thick bamboo 5, the up end of card platform 13 contacts with lower sloping line section 17, and inserted bar dop 12 inserts and detains in detaining a section of thick bamboo 5 and block platform 13 buckle together. The upper end surface of the buckle barrel 5 of the embodiment is provided with a guide slope 14 which is beneficial to the insertion of the inserted rod 3. The guide slope 14 contacts with the lower slope segment 17 of the limit connecting sleeve 4, and the included angle of the guide slope 21 and the vertical line is set to be 45 degrees in the embodiment. The bottom of the fastening cylinder 5 protrudes outward in the circumferential direction.

The shape of the fastening barrel 5 is not limited, and preferably, a chrysanthemum shape composed of a plurality of elastic sheets is adopted, or the side surface of the fastening barrel 5 is provided with an opening communicated with the middle hole of the fastening barrel 5 from top to bottom along the axial direction. Wherein, the shape of the opening has a plurality of kinds, referring to fig. 4, this embodiment is exemplified as follows:

as shown in the drawings (a) and (b), the buckling barrel 5 is provided with a flat linear opening from top to bottom along the side surface parallel to the axis, and the whole buckling barrel 5 is in a C shape. As shown in the figures (c) and (d), the side surface of the buckle tube 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 buckle tube 5 and at one side of the outer wall of the buckle tube 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 buckling barrel 5 can be uniformly stressed in the whole circumferential direction when being pulled, and the condition of the defect can not occur. As shown in the figures (e) and (f), the side surface of the buckle cylinder 5 is provided with a straight line opening from top to bottom, but one end of the opening at the upper end of the buckle cylinder and one end of the opening at the lower end of the buckle cylinder are arranged in a staggered mode, namely the upper end surface and the lower end surface of the opening are not on the same straight line in the axial direction. The buckling barrel 5 can be opened more easily when the insert rod 3 is inserted, so that the clamping head 12 can smoothly enter the inner cavity of the buckling barrel 5 to form a connecting structure. As shown in the figures (g) and (h), the side surface of the buckle barrel 5 is provided with an oblique line opening from top to bottom, and the oblique opening is in a zigzag shape with different directions. Of course, one skilled in the art can combine any of the above shapes as desired.

In order to improve the corrosion resistance of the joint, the joint device of the embodiment is further provided with a sealing ring 20, and the sealing ring 20 may be arranged at the joint of the upper nut 1 and the lower nut 2, or at the joint of the inserted rod 3 and the limiting connecting sleeve 4, or at both of the two joints.

The construction method of the mechanical connection joint device comprises the following specific steps:

(1) respectively producing precast piles with pile heads provided with upper nuts 1 and lower nuts 2, and horizontally placing the precast piles in a precast pile finished product stacking field;

(2) a buckle barrel 5, an elastic element 6 and a bottom support 7 are sequentially arranged in the limiting connecting sleeve 4, so that the limiting connecting sleeve 4, the buckle barrel 5, the elastic element 6 and the bottom support 7 form an integrated structure;

(3) respectively installing the inserted rod 2 and the structure integrated in the step (2) into the cylinders of the upper nut 1 and the lower nut 2, and then transporting the precast pile to a construction site;

(4) constructing the precast pile on site, enabling the pile head to be 0.5-1.5 meters away from the ground, and cleaning the surface of the pile head;

(5) then, hoisting the precast pile to a position 0.2-0.5 m above the pile head of the lower section of the pile, and cleaning the surface of the pile head;

(6) uniformly coating the sealing material on the surface of the pile head of the lower section of the pile;

(7) installing a sealing ring 20 at the bottom of the inserted rod 3 or at the top of the lower nut 2;

(8) aligning the upper and lower prefabricated piles, aligning the centers of the cylindrical sections 11 of the inserted rod 3 with the centers of the lower nuts 1 one by one, and slowly lowering the upper prefabricated pile to insert the inserted rod 3 into the lower nut 2 to be fastened with the fastening cylinder 5;

(9) and constructing the connected upper and lower sections of precast piles to the elevation of the design requirement, and finally completing the installation and construction of the joint.

Claims (10)

1. A mechanical connection joint device comprises an upper nut, a lower nut, an insert rod, a limiting connecting sleeve, a buckling barrel, an elastic element and a bottom support, wherein the upper part of the insert rod is arranged in the upper nut; the elastic element is placed on the bottom support, the buckling cylinder is placed above the elastic element, a clamping table is arranged inside the upper end of the buckling cylinder, and the bottom of the buckling cylinder protrudes outwards along the circumferential direction; the lower part of the insert rod is sequentially provided with a conical section, a cylindrical section and a chuck, and the chuck is inserted into the buckling barrel and is buckled with the clamping table; the limiting connecting sleeve is of a through hole structure, an upper oblique line section for containing the conical section of the inserting rod, a straight line section for containing the cylindrical section of the inserting rod and a lower oblique line section are sequentially arranged in the through hole, and the lower oblique line section is in contact with the upper end face of the clamping table.

2. The mechanical joint device of claim 1, wherein the outer diameter of the lower portion of the position-limiting connecting sleeve is smaller than the outer diameter of the upper portion of the position-limiting connecting sleeve; and a gap is reserved between the outer wall of the lower part of the limiting connecting sleeve and the inner wall of the lower nut.

3. The mechanical connection joint device according to claim 1, wherein the upper end of the limiting connecting sleeve is provided with mounting parts which are symmetrically arranged grooves or bosses.

4. The mechanical joint device according to claim 1, wherein the angle between the lower inclined line segment of the limit connecting sleeve and the horizontal line is less than or equal to 45 °.

5. The mechanical connection joint device according to claim 1, further comprising a sealing ring, wherein the sealing ring is disposed at a joint of the upper nut and the lower nut, or at a joint of the insertion rod and the limiting connection sleeve, or at both joints.

6. The mechanical joint device of claim 1, wherein a flat line is further disposed between the straight line segment and the lower inclined line segment of the position-limiting connecting sleeve.

7. The mechanical connecting joint device according to claim 1, wherein the upper end surface of the fastening cylinder is provided with a guide slope, and the guide slope is in contact with a lower slope section of the limiting connecting sleeve.

8. The mechanical connection joint device of claim 1, wherein the fastening barrel is in a chrysanthemum shape consisting of a plurality of elastic sheets, or the side surface of the fastening barrel is provided with an opening from top to bottom along the axial direction, and the opening is communicated with the middle hole of the fastening barrel.

9. The mechanical connection joint device of claim 8, wherein the openings are radially offset on both sides of the inner wall and the outer wall of the fastening barrel; or two ports of the opening, which are positioned at the upper end and the lower end of the buckle barrel, are arranged in a staggered way along the axial direction; or both of the above-mentioned offset arrangements.

10. A mechanical connection joint arrangement according to claim 9, wherein the cross-section of the opening is serrated.

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