Taper type mechanical connector for concrete precast pile

Abstract

The utility model discloses a concrete precast pile taper type mechanical connector which comprises a sleeve shell with an opening in the left side, a cylindrical protrusion with an opening in the left side is integrally arranged on the right side of the sleeve shell, a spring is movably arranged in the cylindrical protrusion in a sleeved mode, and the left end of the spring extends into the sleeve shell and movably makes contact with an annular gasket. The left side of the annular gasket is in movable contact with a self-buckling assembly, and the self-buckling assembly is movably sleeved with a conical positioning sleeve. By arranging a series of structures, the sleeve shell and the internal structure of the sleeve shell can be conveniently and rapidly assembled, the screw assembly can be conveniently and rapidly buckled and locked with the internal structure of the sleeve shell in a mode of simply pushing the screw assembly to prevent falling off, and compared with the existing other connector schemes in the market, the structure is more stable, the assembly is more convenient, the operation is simpler, and the cost is lower. The comprehensive fitting is lower in cost, is more suitable for being popularized and used in the market, and has the advantage of being good in anti-pulling capacity.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated pile joints, in particular to a conical mechanical joint for a concrete prefabricated pile. Background Art

[0002] With the development of reform and opening up and economic construction, prefabricated piles such as concrete pipe piles and pull-out piles have begun to be widely used in various fields, and the demand is growing. Adjacent pull-out piles with geological design requirements need to be connected through connecting joints. However, the existing conventional connecting joints have the disadvantages of inconvenient assembly and poor pull-out resistance. Based on this, we proposed a tapered mechanical joint for concrete prefabricated piles. Utility Model Content

[0003] The utility model aims to provide a conical mechanical joint for a prefabricated concrete pile to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the utility model provides the following technical solutions: a conical mechanical joint for a prefabricated concrete pile, comprising a sleeve with an opening on the left side, a cylindrical protrusion with an opening on the left side integrally arranged on the right side of the sleeve, a spring movably sleeved in the cylindrical protrusion, the left end of the spring extending into the sleeve and movably contacting an annular gasket;

[0005] The left side of the annular gasket is in movable contact with a self-snap component, and a movable sleeve on the self-snap component is provided with a conical positioning sleeve. The outer left side of the conical positioning sleeve is in tight contact with the inner left side of the sleeve shell, and a conical hole is provided on the inner side of the conical positioning sleeve. A screw assembly is snapped into the self-snap component. The self-snap component is used to automatically move right when the screw assembly is inserted and compress the spring, and automatically expand when moving right and snap-lock the screw assembly.

[0006] Preferably, the self-locking component includes a plurality of arc blocks, and the plurality of arc blocks form a conical sleeve with an outer cone and an inner circle. The outer sides of the plurality of arc blocks are movably sleeved with the same retaining spring, and the inner sides of the plurality of arc blocks are provided with tapered threaded grooves. The plurality of arc blocks are movably sleeved in the conical holes, and the right side of the arc block is in movably contact with the left side of the annular gasket.

[0007] Preferably, the screw assembly includes a connecting part, a screw head is integrally provided at the left end of the connecting part, a tapered threaded part is integrally provided at the right end of the connecting part, a tapered chamfer is provided on the outer side of the right end of the tapered threaded part, and the tapered threaded part is movably sleeved between multiple arc blocks and interlocked with the tapered thread buckle groove.

[0008] Preferably, the inner left sides of the plurality of arc-shaped blocks are all provided with arc-shaped chamfers, and the plurality of arc-shaped chamfers are all matched with the conical chamfers.

[0009] Preferably, the right outer diameter of the tapered positioning sleeve is smaller than the left outer diameter, and the left inner diameter of the tapered hole is smaller than the right inner diameter.

[0010] Preferably, arc-shaped grooves are arranged on the outer side of the arc-shaped block, and the retaining spring is movably sleeved in the plurality of arc-shaped grooves.

[0011] Preferably, the conical positioning sleeve and the sleeve shell are pressed and fixed by a pressing machine.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The conical mechanical joint for prefabricated concrete piles is convenient for quick and easy assembly of the casing and its internal structure by means of the provided casing, self-fastening components, cylindrical protrusions, springs and annular gaskets. Combined with the provided screw rod component, the casing can be quickly fastened and locked with the internal structure of the casing to prevent it from falling off by simply pushing the screw rod component. By means of simple plug-in and automatic fastening, compared with other existing connector solutions on the market, the joint has a more stable structure, is more convenient to assemble, is simpler to operate, and has a lower overall accessory cost, making it more suitable for promotion and use in the market. In addition, by means of fastening of multiple conical thread grooves with the conical threaded portion, the joint can always be in a stable engaged and fastened state, and has the advantage of good pull-out resistance.

[0014] The utility model is provided with a series of structures, which makes it convenient and quick to assemble the shell and its internal structure, and it is convenient to quickly snap-fit ​​and lock it with the structure inside the shell to prevent it from falling off by simply pushing the screw assembly. Compared with other connector solutions currently available on the market, the utility model has a more stable structure, is more convenient to assemble, is simpler to operate, has a lower overall accessory cost, is more suitable for promotion and use in the market, and has the advantage of good pull-out resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a tapered mechanical joint for prefabricated concrete piles proposed by the utility model;

[0016] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of ;

[0017] Figure 3 This is a schematic diagram of the main cross-sectional structure of a tapered mechanical joint of a prefabricated concrete pile proposed by the utility model;

[0018] Figure 4 The utility model is a structural schematic diagram of an arc block of a tapered mechanical joint for a precast concrete pile.

[0019] In the figure: 1, connecting part; 101, tapered threaded part; 2, sleeve shell; 201, cylindrical protrusion; 3, spring; 4, annular gasket; 5, arc block; 501, retaining spring; 502, arc groove; 503, arc chamfer; 504, tapered thread buckle groove; 6, tapered positioning sleeve; 601, tapered hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figures 1 to 4 As shown, a conical mechanical joint of a concrete prefabricated pile proposed in this embodiment includes a casing 2 with an opening on the left side, a cylindrical protrusion 201 with an opening on the left side is integrally provided on the right side of the casing 2, a spring 3 is movably sleeved in the cylindrical protrusion 201, and the left end of the spring 3 extends into the casing 2 and movably contacts with an annular gasket 4;

[0022] The left side of the annular gasket 4 is in movable contact with a self-locking component, and a movable sleeve on the self-locking component is provided with a conical positioning sleeve 6. The outer left side of the conical positioning sleeve 6 is tightly engaged with the inner left side of the sleeve shell 2. The conical positioning sleeve 6 and the sleeve shell 2 are pressed and fixed by a pressing machine. A conical hole 601 is provided on the inner side of the conical positioning sleeve 6. The right side outer diameter of the conical positioning sleeve 6 is smaller than the left side outer diameter, and the left side inner diameter of the conical hole 601 is smaller than the right side inner diameter. A screw assembly is buckled in the self-locking component. The self-locking component is used to automatically move to the right when the screw assembly is inserted and compress the spring 3, and automatically expand when moving to the right and buckle and lock the screw assembly.

[0023] Specifically, the self-locking component includes a plurality of arc blocks 5, and the plurality of arc blocks 5 form a conical sleeve with an outer cone and an inner circle. The outer sides of the plurality of arc blocks 5 are movably sleeved with the same retaining spring 501, wherein the outer sides of the arc blocks 5 are provided with arc grooves 502, and the retaining spring 501 is movably sleeved in the plurality of arc grooves 502, which plays a role in positioning and preventing the retaining spring 501 from falling off. The inner sides of the plurality of arc blocks 5 are all provided with tapered threaded buckle grooves 504, and the plurality of arc blocks 5 are all movably sleeved in the conical holes 601, and the right side of the arc block 5 is movably in contact with the left side of the annular gasket 4; the arc blocks 5 are provided with a plurality of arc grooves 502, and the retaining spring 501 is movably sleeved in the plurality of arc grooves 502, which plays a role in positioning and preventing the retaining spring 501 from falling off. The inner sides of the plurality of arc blocks 5 are all provided with tapered threaded buckle grooves 504, and the plurality of arc blocks 5 are all movably sleeved in the conical holes 601, and the right side of the arc block 5 is movably in contact with the left side of the annular gasket 4; The blocks 5, the tapered thread groove 504 and the retaining spring 501 cooperate with each other. When an object is inserted into the multiple arc blocks 5 and the tapered thread groove 504 is squeezed, the multiple arc blocks 5 will be driven to move right and expand outward. When the arc blocks 5 move right, the annular gasket 4 will be driven to compress the spring 3. The outward expansion of the multiple arc blocks 5 provides the conditions for the inner expansion to provide the object for insertion into the ferrule. The ferrule mouth uses the elastic force of the spring 3 to drive the multiple arc blocks 5 to move back to the left. The multiple arc blocks 5 are squeezed to the left against the inner wall of the tapered hole 601, forming an effect of multiple arc blocks 5 contracting inward for clamping and fixing.

[0024] Furthermore, the screw assembly includes a connecting portion 1, and a plurality of pairs of wrench positions are provided in the middle of the outer side of the connecting portion 1, and the wrench positions can be two pairs, three pairs, four pairs or more pairs. A screw head is integrally provided at the left end of the connecting portion 1, and the thread on the outer side of the screw head itself is an oblique thread. A tapered thread portion 101 is integrally provided at the right end of the connecting portion 1, and the thread on the outer side of the tapered thread portion 101 itself can be a tapered twill or a tapered plain weave. A tapered chamfer is provided at the outer side of the right end of the tapered thread portion 101, and the tapered thread portion 101 is movably sleeved between a plurality of arc blocks 5 and is interlocked with the tapered thread buckle groove 504. The inner left side of the tapered hole 601 is also provided with a conical structure, which is convenient for rapid positioning of the tapered thread portion 101 on the connecting portion 1; the arranged connecting portion 1, screw head and tapered thread portion 101 cooperate, and the tapered thread portion 101 is inserted between a plurality of arc blocks 5 to extrude the inclined surface of the tapered thread buckle groove 504, so as to move right and expand.

[0025] Furthermore, arc chamfers 503 are provided on the inner left sides of the plurality of arc blocks 5 , and the plurality of arc chamfers 503 are all matched with the conical chamfers. The provided arc chamfers 503 facilitate the smooth and easy insertion of the conical chamfers of the tapered threaded portion 101 .

[0026] The method of using the present embodiment is as follows: when assembling the tapered mechanical joint of the concrete prefabricated pile, firstly, the spring 3 is placed in the cylindrical protrusion 201, and the annular gasket 4 is placed in the casing 2 so that it contacts the end of the spring 3 and is elastically supported by the spring 3, and then the plurality of arc blocks 5 are clamped together by the clamping spring 501, and the plurality of arc blocks 5 after the clamping assembly are inserted into the tapered hole 601 and are positioned by the movable sleeve, and then the tapered positioning sleeve 6 is placed in the casing 2 so that it drives the arc block 5 to contact the annular gasket 4, and then the casing 2 and the tapered positioning sleeve 6 are pressed and fixed by a pressing machine;

[0027] When the tapered mechanical joint of the concrete prefabricated pile is actually used, the sleeve shell 2 and the tapered positioning sleeve 6 are pre-welded to the upper end plate of the lower prefabricated pile, and then the screw head of the connecting part 1 is installed and fixed on the lower end plate of the upper prefabricated pile. The lower end plate of the upper prefabricated pile directly drives the screw assembly to move its position, so that the tapered threaded portion 101 of the connecting part 1 is inserted into the arc chamfer 503. When the push continues, the tapered chamfer of the tapered threaded portion 101 squeezes the inner side of the tapered thread buckle groove 504. Under the squeezing force, the multiple arc blocks 5 move to the right and drive the annular gasket 4 to compress the spring 3. At the same time, under the oblique squeezing, the matching arc block 5 is no longer in contact with the inner side of the tapered hole 601 due to the right movement. At this time, under the squeezing force, the multiple arc blocks 5 expand outward and stretch the retaining spring 501 outward. As the multiple arc blocks 5 expand outward, the tapered threaded portion 101 is inserted into Between the multiple arc blocks 5, when the thrust is released, the spring 3 in the compressed state drives the multiple arc blocks 5 to move back to the left through the annular gasket 4. When the multiple arc blocks 5 move back to the left, they are squeezed with the inner side of the tapered hole 601. Under the squeezing, the multiple arc blocks 5 shrink inward along the arc of the tapered hole 601, and drive the multiple tapered thread buckle grooves 504 to buckle on the tapered threaded portion 101. Under the buckling action of the two, the tapered threaded portion 101 is buckled and locked to prevent it from falling off. Through the simple plug-in automatic buckling method, compared with other existing connector solutions on the market, the structure is more stable, the assembly is more convenient, the operation is simpler, the comprehensive accessories cost is lower, and it is more suitable for promotion and use in the market. In addition, by utilizing the buckling method of multiple tapered thread buckle grooves 504 and the tapered threaded portion 101, it can always be in a stable bite-fastening state, and has the advantage of good pull-out resistance.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A conical mechanical joint for a precast concrete pile, comprising a casing (2) with an opening on the left side, characterized in that: The right side of the sleeve (2) is integrally provided with a cylindrical protrusion (201) with an opening on the left side, a spring (3) is movably sleeved inside the cylindrical protrusion (201), and the left end of the spring (3) extends into the sleeve (2) and movably contacts an annular gasket (4); The left side of the annular gasket (4) is in movable contact with a self-locking component, and a conical positioning sleeve (6) is movably sleeved on the self-locking component. The outer left side of the conical positioning sleeve (6) is in tight contact with the inner left side of the sleeve shell (2), and a conical hole (601) is provided on the inner side of the conical positioning sleeve (6). A screw assembly is buckled inside the self-locking component.

2. The tapered mechanical joint for precast concrete piles according to claim 1, characterized in that: The self-locking assembly comprises a plurality of arc blocks (5), wherein the plurality of arc blocks (5) form a conical sleeve with an outer cone and an inner circle, the outer sides of the plurality of arc blocks (5) are movably sleeved with a same retaining spring (501), the inner sides of the plurality of arc blocks (5) are all provided with a conical threaded groove (504), the plurality of arc blocks (5) are movably sleeved in the conical hole (601), and the right side of the arc block (5) is in movably contact with the left side of the annular gasket (4).

3. The tapered mechanical joint for precast concrete piles according to claim 2, characterized in that: The screw assembly comprises a connecting portion (1), the left end of the connecting portion (1) being integrally provided with a screw head, the right end of the connecting portion (1) being integrally provided with a tapered threaded portion (101), the right end of the tapered threaded portion (101) being provided with a tapered chamfer on the outer side, the tapered threaded portion (101) being movably sleeved between a plurality of arc-shaped blocks (5) and being buckled with the tapered thread buckle groove (504).

4. The tapered mechanical joint for precast concrete piles according to claim 3, characterized in that: The inner left sides of the plurality of arc-shaped blocks (5) are all provided with arc-shaped chamfers (503), and the plurality of arc-shaped chamfers (503) are all adapted to the conical chamfers.

5. The tapered mechanical joint for precast concrete piles according to claim 1, characterized in that: The right side outer diameter of the tapered positioning sleeve (6) is smaller than the left side outer diameter, and the left side inner diameter of the tapered hole (601) is smaller than the right side inner diameter.

6. The tapered mechanical joint for precast concrete piles according to claim 2, characterized in that: The outer side of the arc block (5) is provided with an arc groove (502), and the clamping spring (501) is movably sleeved in the plurality of arc grooves (502).

7. The tapered mechanical joint for precast concrete piles according to claim 1, characterized in that: The conical positioning sleeve (6) and the sleeve shell (2) are pressed and fixed by a pressing machine.

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