CN102220758A - Prestressed concrete pipe pile mechanical engagement joint and prestressed concrete pipe pile - Google Patents

Abstract

The invention discloses a mechanical meshing joint of a prestressed concrete pipe pile, which comprises a first end plate, a second end plate and a connecting pin, wherein the first end plate and the second end plate are fixedly connected with the connection ends of a first section of pipe pile and a second section of pipe pile respectively, the first end plate is circumferentially provided with at least one threaded hole, the second end plate is provided with through holes corresponding to the threaded holes, one side of each through hole, back to the first end plate, is provided with two oppositely arranged clamping blocks, the opposite surfaces of the two clamping blocks are concave cylindrical surfaces, the opposite surfaces of the two clamping blocks are provided with first meshing teeth extending in the circumferential direction, the first end of the connecting pin is provided with external threads which can be matched with the threaded hole, the second end of the connecting pin is cylindrical, and the circumferential surface of the second end of the connecting pin is provided with second meshing teeth extending in. The mechanical meshing joint provided by the invention has the advantages of simple processing, convenience in butt joint, high pulling resistance, high bearing capacity and corrosion resistance. The invention also discloses a prestressed concrete pipe pile with the mechanical meshing joint.

Description

Prestressed concrete pipe pile mechanical engagement joint and prestressed concrete pipe pile

technical field

The invention relates to a pile composed of detachable components, in particular to a prestressed concrete pipe pile mechanical engagement joint for connecting two-section pipe piles and a prestressed concrete pipe pile.

Background technique

In building construction, it is often necessary to bury concrete pipe piles underground. After the usual concrete pipe piles are prefabricated, they are connected to the upper and lower sections of pipe piles by welding on site. This structure slows down the construction speed and costs High, and the connection quality is difficult to guarantee. In order to solve this problem, one of the applicants of the present invention applied for a quick connector for prestressed concrete pipe piles (publication number CN2495685) on August 1, 2001, which includes a joint that is fixedly connected to the connecting ends of the upper and lower piles respectively. There are two end plates and connecting pins. There is a threaded hole in the end plate of the pile. One end of the connecting pin is threaded to match the threaded hole of the end plate of the pile. The other end is square and has meshing holes on both sides. Teeth, a joint box is buried under the end plate of the lower pile, and a pressure spring is installed between the two ends of the joint box and the two pin plates, and the end of the connecting pin with meshing teeth can pass through the end plate of the lower pile The square hole is inserted between two pin plates, and the meshing teeth on it can mesh with the teeth on one side of the pin plate. The joint of this structure can quickly connect two sections of pipe piles together. However, because the end of the connecting pin with meshing teeth is square, it has the following defects: (1) It is necessary to cut the end of the connecting pin with meshing teeth during processing. The meshing teeth are processed separately on both sides, and the processing is relatively complicated; (2) the end of the connecting pin with the meshing teeth is not easy to insert between the two pin plates during construction, and the construction is inconvenient; (3) In addition, the end of the connecting pin with the meshing teeth and the The contact area between the two pin plates is small, the pull-out resistance is low, and the bearing capacity is low.

Contents of the invention

The purpose of the present invention is to overcome the defects of the prior art and provide a prestressed concrete pipe pile mechanical engagement joint with simple processing, convenient docking, high pull-out resistance and high bearing capacity.

Another object of the present invention is to provide a prestressed concrete pipe pile with the above joint.

A prestressed concrete pipe pile mechanical engagement joint provided by the present invention includes a first end plate, a second end plate and a connecting pin fixedly connected to the connecting ends of the first section pipe pile and the second section pipe pile respectively , at least one threaded hole is provided in the circumferential direction on the first end plate, and a through hole corresponding to the threaded hole is provided on the second end plate, and each through hole faces away from the first end One side of the plate is provided with two opposite blocks, on the opposite surfaces of the two blocks are provided with first engaging teeth, and the opposite faces of the two blocks are respectively in contact with an elastic member, and the connection The first end of the pin is provided with an external thread that can be matched with the threaded hole, and the second end is provided with a second meshing tooth, and the second end of the connecting pin can pass through the through hole and be inserted between the two blocks, on which The second meshing teeth can mesh with the first meshing teeth, the second end of the connecting pin is cylindrical, and the second As for the engaging teeth, the opposite surfaces of the two blocks are concave cylindrical surfaces, and the first engaging teeth extending along the circumferential direction are arranged on the opposite surfaces of the two blocks.

As a preferred technical solution of the above technical solution, it also includes a connection box, the connection box is embedded in the connection end of the second section pipe pile and its opening is opposite to the through hole, the two clamping blocks and the Both elastic parts are located in the connection box.

As a preferred technical solution of the above technical solution, asphalt paint is filled in the connection box.

As a preferred technical solution of the above technical solution, asphalt paint is coated on the surface of the connecting pin.

As a preferred technical solution of the above technical solution, the elastic member is a pressure spring.

A prestressed concrete pipe pile provided by the present invention comprises a first-section pipe pile, a second-section pipe pile and a mechanical engagement joint. The first end plate, the second end plate and the connecting pin are fixedly connected, and at least one threaded hole is provided on the first end plate along the circumference, and the second end plate is provided with the threaded hole. For the corresponding through holes, two opposite blocks are provided on the side of each through hole facing away from the first end plate, and first engaging teeth are arranged on the opposite surfaces of the two blocks. The back-to-back surfaces of the two clamping blocks are respectively in contact with an elastic part. The first end of the connecting pin is provided with an external thread to cooperate with the threaded hole, the second end is provided with a second meshing tooth, and the second end of the connecting pin The end can pass through the through hole and be inserted between the two blocks, and the second meshing tooth on it can mesh with the first meshing tooth. The second end of the connecting pin is cylindrical. The second meshing teeth extending in the circumferential direction are provided on the circumferential surface of the second end of the second end, the opposite surfaces of the two blocks are concave cylindrical surfaces, and the opposite faces of the two blocks are provided with The first meshing teeth extend circumferentially.

As a preferred technical solution of the above technical solution, the mechanical engagement joint further includes a connection box, which is embedded in the connection end of the second section pipe pile and its opening is opposite to the through hole, and the two Both the clamping block and the two elastic components are located in the connection box.

As a preferred technical solution of the above technical solution, asphalt paint is filled in the connection box.

As a preferred technical solution of the above technical solution, asphalt paint is coated on the surface of the connecting pin.

As a preferred technical solution of the above technical solution, the elastic member is a pressure spring.

Compared with prior art, the advantage of the present invention is:

(1) In the prestressed concrete pipe pile mechanical meshing joint provided by the present invention, since the second end of the connecting pin connected to the two blocks is cylindrical, the second meshing teeth extend along its circumference, and the opposite sides of the two blocks The surface is a concave cylindrical surface, and the first meshing teeth extend along its circumference. With this structure, not only the processing of the connecting pin becomes simple, but also the second end of the connecting pin is conveniently inserted between the two blocks during construction; In addition, the contact area between the second end of the connecting pin and the two clamping blocks is increased, and the pull-out resistance and bearing capacity are improved;

(2) The prestressed concrete pipe pile mechanical meshing joint provided by the present invention is coated with asphalt paint on the connecting pins and filled with asphalt paint in the connection box during use, so that the mechanical meshing joint can prevent corrosion.

It can be seen that the prestressed concrete pipe pile mechanical engagement joint provided by the present invention has the advantages of simple processing, convenient butt joint, high pullout resistance, high bearing capacity, and corrosion resistance.

Description of drawings

Fig. 1 is the structural representation of the prestressed concrete pipe pile of one of the embodiments of the present invention;

Fig. 2 is a schematic structural view of a first end plate according to an embodiment of the present invention;

Fig. 3 is a schematic structural view of a second end plate according to an embodiment of the present invention;

Fig. 4 is a schematic structural diagram of a connecting pin according to an embodiment of the present invention.

Explanation of reference signs: 1-threaded hole, 2-connection pin, 3-first end of connection pin, 4-hole cover, 5-first section pipe pile, 6-first end plate, 7-asphalt paint, 8-the second end plate, 9-the second pipe pile, 10-pressure spring, 11-connection box, 12-block, 13-the second end of the connecting pin, 13a-the second meshing tooth, 14-pass hole.

Detailed ways

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

One of the embodiments of the prestressed concrete pipe pile of the present invention is shown in FIGS. The first end plate 6, the second end plate 8 and the connecting pin 2 fixedly connected with the connecting ends of the first section pipe pile 5 and the second section pipe pile 9 respectively, are arranged on the first end plate 6 along the circumferential direction. There are 6 threaded holes 1. Preferably, hole covers 4 corresponding to the threaded holes 1 one by one and opening opposite to the threaded holes 1 are buried at the connecting end of the first end plate 6 . Six circular through-holes 14 corresponding to the threaded holes 1 are provided on the second end plate 8, and there are embedded holes corresponding to the through-holes 14 one-to-one at the connection end of the second end plate 8, and the opening and the through-hole 14 are six opposite connection boxes 11, and each connection box 11 is equipped with two opposite clamping blocks 12 and two compression springs 10 arranged between the clamping blocks 12 and the ends of the connection boxes 11. The opposite surfaces of the two clamping blocks 12 are concave cylindrical surfaces, and the first engaging teeth extending along the circumferential direction are arranged on the opposing surfaces of the two clamping blocks 12, and the first engaging teeth are right triangle teeth. The first end 2 of the connecting pin 2 is provided with an external thread to cooperate with the threaded hole 1 on the first end plate 6 . The second end 13 of the connecting pin 2 is cylindrical, on the peripheral surface of the second end 13 of the connecting pin 2 there is provided a second engaging tooth 13a extending along the circumferential direction. Preferably, the second meshing teeth 13a are right triangle teeth. The second end of the connecting pin 2 can pass through the through hole 14 and be inserted between the two clamping blocks 12, and the second engaging tooth 13a on it can engage with the first engaging tooth. The connection pin 2 and the block 12 adopt this structure, not only the processing of the connection pin 2 becomes simple, but also the second end of the connection pin 2 is conveniently inserted between the two blocks 12 during construction; in addition, the connection pin is enlarged. The contact area between the second end of the 2 and the two clamping blocks 12 improves the pull-out resistance and bearing capacity.

When connecting the first pipe pile 5 and the second pipe pile 9, first screw the first end of the connecting pin 2 into the threaded hole 1 on the first end plate 6, and then lift the first pipe pile 5. Insert the second end of the connecting pin 2 into the through hole 14 of the second end plate 8 until it is inserted between the two blocks 12 in the connecting box 11, and the second engaging tooth of the second end of the connecting pin 2 13a and the first meshing teeth on the block 12 are tightly engaged under the action of the pressure spring 10, so that the first section pipe pile 5 and the second section pipe pile 9 are firmly connected together. During use, bitumen paint is coated on the connecting pin 2 respectively, and the bitumen paint 7 is filled in the connection box 11, so that the mechanically meshed joint can be corrosion-resistant.

To sum up, the prestressed concrete pipe pile mechanical engagement joint provided by this embodiment has the advantages of simple processing, convenient butt joint, high pullout resistance, high bearing capacity, and corrosion resistance.

The above are only specific embodiments of the present invention, and do not limit the protection scope of the present invention; any replacement and improvement made on the basis of not violating the concept of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. A prestressed concrete pipe pile mechanical engagement joint, which includes a first end plate and a second end plate and a connecting pin affixed to the connection end of the first section pipe pile and the second section pipe pile respectively, in The first end plate is provided with at least one threaded hole in the circumferential direction, and a through hole corresponding to the threaded hole is provided on the second end plate, and each through hole faces away from the first end plate. One side is provided with two opposite clamping blocks, and first meshing teeth are arranged on the opposite surfaces of the two clamping blocks, and the back faces of the two clamping blocks are respectively in contact with an elastic member, and the connecting pins The first end is provided with an external thread to cooperate with the threaded hole, the second end is provided with a second meshing tooth, the second end of the connecting pin can pass through the through hole and be inserted between the two blocks, and the second end on it can be inserted between the two blocks. The two meshing teeth can be meshed with the first meshing teeth, and the feature is that: the second end of the connecting pin is cylindrical, and the circumferentially extending ring is provided on the peripheral surface of the second end of the connecting pin For the second engaging teeth, the opposite surfaces of the two blocks are concave cylindrical surfaces, and the first engaging teeth extending along the circumferential direction are arranged on the opposite surfaces of the two blocks. 2. The prestressed concrete pipe pile mechanical engagement joint according to claim 1, characterized in that: it also includes a connection box, the connection box is embedded in the connection end of the second section pipe pile and its opening is in line with the The through holes are opposite, and the two clamping blocks and the two elastic components are located in the connection box. 3. The mechanical engagement joint of prestressed concrete pipe piles according to claim 2, characterized in that: the connection box is filled with asphalt paint. 4. The prestressed concrete pipe pile mechanical engagement joint according to claim 1, characterized in that: the surface of the connecting pin is coated with asphalt paint. 5. The prestressed concrete pipe pile mechanical engagement joint according to any one of claims 1 to 4, characterized in that: the elastic member is a compression spring. 6. A prestressed concrete pipe pile, which includes a first section pipe pile, a second section pipe pile and a mechanical engagement joint, and the mechanical engagement joint includes a connecting end fixed to the first section pipe pile and the second section pipe pile respectively. The first end plate, the second end plate and the connecting pin are connected, and at least one threaded hole is provided on the first end plate along the circumference, and the second end plate is provided with a screw hole corresponding to the threaded hole. through-holes, two opposite blocks are provided on the side of each through-hole facing away from the first end plate, first engaging teeth are arranged on the opposite surfaces of the two blocks, and the two The back-to-back surfaces of the clamping blocks are respectively in contact with an elastic part. The first end of the connecting pin is provided with an external thread to cooperate with the threaded hole, and the second end is provided with a second meshing tooth. The second end of the connecting pin can be It is inserted between the two blocks through the through hole, and the second meshing teeth on it can mesh with the first meshing teeth. It is characterized in that: the second end of the connecting pin is cylindrical. The circumferential surface of the second end of the connecting pin is provided with the second meshing teeth extending in the circumferential direction, the opposite surfaces of the two blocks are concave cylindrical surfaces, and the opposite surfaces of the two blocks are provided with There are said first engaging teeth extending circumferentially. 7. The prestressed concrete pipe pile according to claim 6, characterized in that: the mechanical engagement joint also includes a connection box, the connection box is buried in the connection end of the second section pipe pile and its opening is in line with The through holes are opposite, and the two clamping blocks and the two elastic components are located in the connection box. 8. The prestressed concrete pipe pile according to claim 7, characterized in that: the connection box is filled with asphalt paint. 9. The prestressed concrete pipe pile according to claim 6, characterized in that: asphalt paint is coated on the surface of the connecting pin. 10. The prestressed concrete pipe pile according to any one of claims 6 to 9, characterized in that the elastic component is a compression spring.

Images