CN213625561U

CN213625561U - Self-locking mechanical connecting joint device

Info

Publication number: CN213625561U
Application number: CN202022254824.5U
Authority: CN
Inventors: 陈巧; 王伟; 赵鹏
Original assignee: Jiangsu Jianhua New Material Technology Co ltd; Jianhua Construction Materials China Co Ltd; Jiangsu Jianhua New Wall Material Co Ltd
Current assignee: Jiangsu Jianhua New Material Technology Co ltd; Jianhua Construction Materials China Co Ltd; Jiangsu Jianhua New Wall Material Co Ltd
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-07-06
Anticipated expiration: 2030-10-12

Abstract

The utility model provides a from locking-type mechanical connection joint device. In the device, a protective sleeve and a limiting sleeve are arranged in a lower nut, and a clamping cylinder is arranged between the protective sleeve and the limiting sleeve; the upper part of the inserted link is arranged in the upper nut; the protective sleeve is of an integrated structure and comprises a hollow upper cylindrical section, a limiting groove and a hollow lower cylindrical section, wherein the limiting groove is arranged on the end face of the hollow upper cylindrical section and is used for placing the bottom of the clamping cylinder; the outer diameters of the hollow upper cylindrical section and the hollow lower cylindrical section are the same, and the inner diameter of the hollow lower cylindrical section is larger than that of the hollow upper cylindrical section; the clamping cylinder is of an integral hollow structure, a clamping table is arranged in an inner cavity at the upper part of the clamping cylinder along the circumferential direction, an opening is formed in the side surface of the clamping cylinder from top to bottom along the axial direction, and the opening is communicated with a middle hole of the clamping cylinder; the clamping head at the bottom of the inserted bar is inserted into the clamping cylinder and is buckled with the clamping table. The utility model discloses a device can effectively solve the attach fitting's when there is quality defect at the upset head of reinforcing bar installation quality problem to promote the corrosion resisting property who connects.

Description

Self-locking mechanical connecting joint device

Technical Field

The utility model relates to a building connection spare technical field especially relates to a from locking-type mechanical connection joint device.

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. Because the welding mode receives the influence of two aspects factors, there is the potential safety hazard in the connection structure that leads to precast pile head department easily, specifically is: on one hand, the construction quality problem is caused, the quality difference of welding between the pile head and the pile head is large due to the level difference of site pile foundation construction units and personnel, the welding quality directly influences the connection quality of the pile head, and potential safety hazards are caused to engineering; on the other hand, the welding mode is greatly influenced by weather factors, the required welding time is long, the progress of a project is influenced, and meanwhile, the workload of constructors is increased, because after the pile head is welded with the pile head, the time for waiting for cooling of a welding part is at least about 8 minutes, pile sinking can be carried out later, a large amount of time is wasted, and the construction efficiency is influenced. Meanwhile, a plurality of pile foundation constructors continue to sink piles without waiting for the cooling of the welding positions, so that the welding quality is reduced.

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.

Chinese patent CN210395665U, entitled "resilient clip, mechanical connector and prefabricated construction combination" discloses a resilient clip, which comprises a base, two or more resilient sheets spaced on the base and distributed annularly, wherein the resilient sheets form an inner hook at one end far away from the base, and the resilient sheets form at least one radially outward convex section and/or at least one radially inward concave section. The elastic buckle barrel adopts the combination of a plurality of elastic sheets, so that the contact mode of the buckle barrel and the inserted link is point-type or section-type contact, the integral contact is not realized, and the tensile property of the buckle barrel is weakened to a certain extent. When a joint with very high tensile requirement is connected, the sizes of the buckling barrel and the sleeve are required to be increased for improving the tensile property of the joint so as to meet the requirement. Meanwhile, the elastic sheet adopts a convex-concave structure, and the diameter of the inner wall of the nut sleeve needs to be increased, so that the elastic sheet has enough deformation space in the insertion process of the inserted rod, otherwise, the connection of the joint has hidden trouble.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a from locking-type mechanical connection piecing devices, the device can effectively solve the attach fitting's when there is quality defect at the upset head of reinforcing bar installation quality problem to promote the corrosion resisting property who connects.

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

a self-locking mechanical connecting joint device comprises an upper nut, a lower nut, an insertion rod, a limiting sleeve, a protective sleeve and a clamping cylinder, wherein the protective sleeve and the limiting sleeve are arranged in the lower nut; the upper part of the inserted link is arranged in the upper nut; the protective sleeve is of an integrated structure and comprises a hollow upper cylindrical section, a limiting groove and a hollow lower cylindrical section, wherein the limiting groove is arranged on the end face of the hollow upper cylindrical section and is used for placing the bottom of the clamping cylinder; the outer diameters of the hollow upper cylindrical section and the hollow lower cylindrical section are the same, and the inner diameter of the hollow lower cylindrical section is larger than that of the hollow upper cylindrical section; the clamping cylinder is of an integral hollow structure, a clamping table is arranged in an inner cavity at the upper part of the clamping cylinder along the circumferential direction, an opening is formed in the side surface of the clamping cylinder from top to bottom along the axial direction, and the opening is communicated with a middle hole of the clamping cylinder; the clamping head at the bottom of the inserted bar is inserted into the clamping cylinder and is buckled with the clamping table.

Furthermore, the lower part of the inserted bar is sequentially provided with a conical section, a cylindrical section and a chuck; 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 cylinder.

Furthermore, the bottom of the clamping cylinder is provided with a bottom support which protrudes outwards along the circumferential direction, and the bottom support is placed in the limiting groove.

Further, the transition part of the hollow upper cylindrical section and the hollow lower cylindrical section is a straight line, a slant line or an arc line.

Furthermore, the openings are positioned on two sides of the inner wall and the outer wall of the clamping cylinder in a staggered mode along the radial direction; or the two ports of the opening, which are positioned at the upper end and the lower end of the clamping cylinder, 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.

Furthermore, an elastic ring is arranged on the outer portion of the clamping cylinder along the circumferential direction.

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 sleeve, or at the joints of the upper nut and the lower nut.

Preferably, the ratio of the length of the hollow upper cylindrical section to the length of the hollow lower cylindrical section is greater than 2:1, and the thickness of the hollow lower cylindrical section is not greater than 1.5 mm.

Preferably, the height of the cartridge is less than 10 mm.

Compared with the prior art, the utility model discloses mechanical connection connects device has following beneficial effect:

(1) the utility model discloses the mechanical connection of stake and stake is realized through nut, inserted bar, a card section of thick bamboo isotructure to the piecing devices, has simple structure, resistance to plucking and bears 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) The top of the protective sleeve is provided with the limiting groove, so that the middle clamping cylinder can be fixed in a set limiting space, the middle clamping cylinder only can slide in a limited radial direction, and the installation quality of the inserted rod is ensured.

(3) The lower part of the inserted rod is provided with a cylindrical section and a conical section, the length ratio of the cylindrical section to the conical section is 1: 2-3, stress concentration at the joint of the top and the bottom of the inserted rod can be greatly reduced, and the strength of the inserted rod is ensured.

(4) Through setting up the protective sheath and setting up the thickness that its hollow lower cylinder section is not more than 1.5mm, make when the upset head of reinforcing bar has the defect, can ensure that the card section of thick bamboo is installed on the position of setting for, can not take place the offset, ensured the installation quality of joint.

(5) 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.

(6) Set up a calorie of section of thick bamboo into open structure, be the wholeness contact mode when contacting with the inserted bar, furthest has ensured the tensile properties of a calorie of section of thick bamboo, when connecting to the very high joint of tensile requirement, need not increase a calorie of section of thick bamboo and telescopic size can satisfy the requirement.

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 cartridge in the embodiment.

FIG. 4 is a schematic diagram of several structures of the cartridge 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 the inside and the outside of the opening which are arranged in a staggered manner, (e) and (f) are respectively a perspective view and a sectional view of the upper end and the lower end of the opening which are arranged in a staggered manner, and (g) and (h) are respectively a perspective view and a sectional view of the opening which is in a zigzag.

In the figure, 1-upper nut, 2-lower nut, 3-insert rod, 4-limiting sleeve, 5-clamping cylinder, 6-protective sleeve, 7-upper cylindrical section, 8-lower cylindrical section, 9-limiting groove, 10-elastic ring, 11-reinforcing steel bar, 12-conical section, 13-cylindrical section, 14-clamping head, 15-upper inclined line section, 16-straight line section, 17-lower inclined line section, 18-clamping table, 19-opening, 20-bottom support, 21-guiding slope, 22-mounting groove and 23-sealing ring.

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 self-locking mechanical connection joint device, which comprises an upper nut 1, a lower nut 2, an inserted link 3, a limiting sleeve 4, a clamping cylinder 5 and a protective sleeve 6. Wherein, the top of the inserted link 3 is a cylindrical head provided with a limit 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 a conical section 12, a cylindrical section 13 and a bottom chuck 14, and in order to ensure the strength of the inserted bar 3, the length ratio of the cylindrical section 13 to the conical section 12 is preferably 1: 2-3. In order to avoid potential safety hazard, the height of the cylindrical section 13 is set to be higher than that of the clamping cylinder 5, so that the cylindrical section 13 is completely in linear contact with the inner cavity of the clamping cylinder 5, and preferably, the height of the cylindrical section 13 is at least 1.1 times higher than that of the clamping cylinder 5, and the main reason is that the construction error is considered, so that an error adjustment space is 10%.

Stop collar 4, protective sheath 6 pass through the screw thread installation in lower nut 2, are equipped with a card section of thick bamboo 5 between stop collar 4 and the protective sheath 6. 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 22, so that the mounting is convenient. The limiting connecting sleeve 4 is of a through hole structure, and an upper oblique line section 15 for containing the conical section 12 of the inserted link, a straight line section 16 for containing the cylindrical section 13 of the inserted link and a lower oblique line section 17 are sequentially arranged in the through hole. 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.

Protective sheath 6 is the integral type structure for having middle through-hole, including last cylinder section 7, lower cylinder section 8 and spacing recess 9, and spacing recess 9 sets up the terminal surface at last cylinder section 7 for place the bottom of a calorie section of thick bamboo 5, make a calorie section of thick bamboo 5 can only be in the radial slip of limited space, guarantee inserted bar 3 and the quality of being connected of a calorie section of thick bamboo 5. The outer diameters of the upper cylindrical section 7 and the lower cylindrical section 8 are the same, but the inner diameter of the lower cylindrical section 8 is larger than that of the upper cylindrical section, so that the connecting piece end part positioned in the lower nut 2 is protected. The transition between the upper cylindrical section 7 and the lower cylindrical section 8 may be a straight line, a diagonal line or an arc line. Preferably, the ratio of the length of the upper cylindrical section 7 to the lower cylindrical section 8 is greater than 2: 1. When the diameter of the end of the connector, such as an upset head, is too large, the thickness of the lower cylindrical section 8, if too thick, is detrimental to the ability of the end of the connector to be inserted into the protective sleeve 6, and therefore, the thickness of the lower cylindrical section 8 is preferably no greater than 1.5mm in this embodiment.

The structure of the clamping cylinder 5 can adopt an integrated structure or a split structure. In the embodiment, a clamping table 18 is arranged in an inner cavity of the upper end of the clamping cylinder 5 along the circumferential direction, the upper end surface of the clamping table 18 is in contact with the lower inclined line segment 17, and the inserted bar chuck 14 is inserted into the clamping cylinder 5 and is buckled with the clamping table 18. The upper end surface of the clamping cylinder 5 of the embodiment is provided with a guide slope 21 which is beneficial to the insertion of the inserted rod 3. The guide slope 21 is in contact with the lower slope segment 17 of the limiting connecting sleeve 4, and the included angle between the guide slope 21 and the vertical line is set to be 45 degrees in the embodiment. The bottom of the clamping cylinder 5 protrudes outwards along the circumferential direction to form a bottom support 20, and the bottom support 20 is placed in the limiting groove 9.

The side surface of the clamping cylinder 5 is provided with an opening 19 communicated with the middle hole of the clamping cylinder 5 from top to bottom along the axial direction. Among them, there are various shapes of the opening 19, and referring to fig. 4, the embodiment is exemplified as follows:

as shown in the drawings (a) and (b), the card cylinder 5 is provided with a flat linear opening from top to bottom along the side surface parallel to the axis, and the whole card cylinder 5 is in a C shape. As shown in the figures (c) and (d), the side surface of the clamping cylinder 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 clamping cylinder 5 and at one side of the outer wall of the clamping cylinder 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 clamping cylinder 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 clamping 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 clamping cylinder and one end of the opening at the lower end of the clamping 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 clamping cylinder 5 can be more easily opened when the insertion rod 3 is inserted, so that the clamping head 12 can smoothly enter the inner cavity of the clamping cylinder 5 to form a connecting structure. As shown in the figures (g) and (h), the side surface of the clamping cylinder 5 is provided with an oblique line opening from top to bottom, and the oblique line 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 present embodiment is further provided with a sealing ring 23, and the sealing ring 23 may be provided at the joint of the upper nut 1 and the lower nut 2, or at the joint of the insert rod 3 and the stop collar 4 (see fig. 1), or at both of these joints.

With reference to fig. 1 and 2, the device of this embodiment firstly installs the pier nose of the steel bar 11 in the upper nut 1 and the lower nut 2 respectively, then installs the protective sleeve 6, the clamping cylinder 5 and the limiting sleeve 4 in the lower nut 2 in sequence, secondly installs the inserted bar 3 in the upper nut 1, then installs the sealing ring 23 on the inserted bar 3, and finally inserts the inserted bar 3 into the lower nut 2. The clamping head 14 of the inserted link 3 passes through the middle hole of the clamping cylinder 5 and then is buckled with the clamping platform 18. The inserting rod 3 is tightly connected with the clamping cylinder 5 under the locking of the clamping cylinder 5, so that the installation of the joint is realized.

Claims

1. A self-locking mechanical connecting joint device comprises an upper nut, a lower nut, an insertion rod, a limiting sleeve, a protective sleeve and a clamping cylinder, wherein the protective sleeve and the limiting sleeve are arranged in the lower nut; the upper part of the inserted link is arranged in the upper nut, and the protective sleeve is of an integrated structure and comprises a hollow upper cylindrical section, a limiting groove and a hollow lower cylindrical section, wherein the limiting groove is arranged on the end surface of the hollow upper cylindrical section and is used for placing the bottom of the clamping cylinder; the outer diameters of the hollow upper cylindrical section and the hollow lower cylindrical section are the same, and the inner diameter of the hollow lower cylindrical section is larger than that of the hollow upper cylindrical section; the clamping cylinder is of an integral hollow structure, a clamping table is arranged in an inner cavity at the upper part of the clamping cylinder along the circumferential direction, an opening is formed in the side surface of the clamping cylinder from top to bottom along the axial direction, and the opening is communicated with a middle hole of the clamping cylinder; the clamping head at the bottom of the inserted bar is inserted into the clamping cylinder and is buckled with the clamping table.

2. The self-locking mechanical connection joint device according to claim 1, wherein the lower portion of the inserted link is provided with a tapered section, a cylindrical section and a chuck in sequence; the stop collar is the through-hole structure, is equipped with the oblique line section of going up that is used for holding the inserted bar toper section, holds the straightway and the lower oblique line section of inserted bar cylinder section in proper order in the through-hole, lower oblique line section with the up end of a card section of thick bamboo contacts.

3. The self-locking mechanical connecting joint device according to claim 1, wherein the bottom of the clamping cylinder is provided with a bottom support protruding outwards along the circumferential direction, and the bottom support is placed in the limiting groove.

4. The self-locking mechanical connector device according to claim 1, wherein the transition portion between the upper hollow cylindrical section and the lower hollow cylindrical section is a straight line, a diagonal line or an arc line.

5. The self-locking mechanical connector device according to claim 1, wherein the openings are arranged at two sides of the inner wall and the outer wall of the clamping cylinder in a staggered manner along the radial direction; or the two ports of the opening, which are positioned at the upper end and the lower end of the clamping cylinder, are arranged in a staggered way along the axial direction; or both of the above-mentioned offset arrangements.

6. The self-locking mechanical connector assembly according to claim 5, wherein the cross-section of the opening is serrated.

7. The self-locking mechanical connector device according to claim 1, wherein the outer portion of the locking cylinder is provided with an elastic ring along the circumferential direction.

8. The self-locking mechanical connector device according to claim 1, further comprising a sealing ring, wherein the sealing ring is disposed at a joint between the upper nut and the lower nut, or at a joint between the insertion rod and the stop collar, or at both joints.

9. The self-locking mechanical connector device according to claim 1, wherein the ratio of the length of the hollow upper cylindrical section to the hollow lower cylindrical section is greater than 2:1, and the thickness of the hollow lower cylindrical section is not greater than 1.5 mm.

10. The self-locking mechanical connector assembly according to claim 1, wherein the height of the locking cylinder is less than 10 mm.