CN212294638U

CN212294638U - Tooth mechanical joint and concrete pile connection structure

Info

Publication number: CN212294638U
Application number: CN202020570599.3U
Authority: CN
Inventors: 袁雪峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-08
Filing date: 2020-04-16
Publication date: 2021-01-05
Anticipated expiration: 2030-04-16
Also published as: CN212294639U

Abstract

The utility model discloses a tooth mechanical joint and concrete pile connection structure, tooth mechanical joint include inserted bar and connecting piece, the inserted bar is in including the fixing base and the setting that are equipped with the external screw thread plug on the fixing base, the connecting piece includes sleeve structure's connecting piece body and setting a plurality of shell fragments of buckling that connecting piece body one end and annular were arranged, buckle the shell fragment include with the shell fragment body of connecting piece body coupling is in with the setting the kink of connecting piece body one end is kept away from to the shell fragment body, be equipped with the latch on the outer wall of plug, the inner wall of kink forms the joint face with the plug joint, be equipped with the latch on the joint face, work as when the plug inserts in the connecting piece, the inserted bar with the mutual block of latch on the joint face. The tooth mechanical joint can ensure that the insertion rod is firmly inserted into the connecting piece, so that the pulling resistance of the concrete pile is improved.

Description

Tooth mechanical joint and concrete pile connection structure

Technical Field

The utility model relates to a concrete pile connects technical field, concretely relates to tooth mechanical joint and concrete pile connection structure.

Background

The tubular pile has incomparable advantages as other pile types when used as the uplift pile, particularly the pile body can not crack in the effective pre-stress range, the protection to the prestressed reinforcement is better, and the uplift bearing capacity of the pile body can be better exerted. The tubular pile does not need to consider increasing reinforcing bars to enhance the tensile capacity of the pile body due to strict crack control, so that the economical efficiency of the tubular pile as a uplift pile is increasingly remarkable.

The general engineering piles (precast piles) are multi-section piles, and uplift piles are no exception and generally need to be spliced. Existing precast pile ends are typically quick-connected between the piles by mechanical joints.

As shown in fig. 13, the existing mechanical joint structure for quickly connecting concrete piles comprises an insertion rod 1, a connecting piece 2 and a reinforcing sleeve 90, wherein the insertion rod 1 and the connecting piece 2 are respectively installed on the reinforcing sleeve 90, the connecting piece 2 comprises a connecting piece body 20 and a plurality of bent elastic pieces 21 arranged at one end of the connecting piece body in an annular manner, an annular groove 72 is formed in the insertion rod 1, a blocking surface 71 is arranged in the annular groove, when the insertion rod is inserted into the connecting piece, the end portion 70 of each bent elastic piece abuts against the blocking surface 71, and the insertion rod is clamped with the connecting piece. During specific application, as shown in fig. 15, a plurality of insertion rods are uniformly installed on one end face of the pile through the reinforcing sleeve, and a plurality of connecting pieces are uniformly installed on the other end face of the pile through the reinforcing sleeve, so that the quick connection of the pile can be realized.

However, the existing mechanical joint has the following problems: the end face of the pile has a certain inclination, and the allowable deviation of the size of the pipe pile in table 6 in national standard GB13476-2009 is specified: for the tubular pile with the diameter of 300mm to 700mm, the allowable inclined distance of the end face is-2 mm to +5mm, and for the tubular pile with the diameter of 800mm to 1400mm, the allowable inclined distance of the end face is-4 mm to +7mm, so when two piles (with the diameter of 300mm to 700mm) are butted, when only one pile end face is considered to be inclined, a gap of 5mm exists at most. When the pile end face is inclined, the problem of over-insertion or under-insertion may exist when the mechanical joint is used for concrete pile connection, as shown in fig. 14 and 15, which are schematic diagrams of inserting the inserted rod into the connecting piece, in fig. 15, the inserted rod of the lower mechanical joint and the connecting piece are just engaged, the upper mechanical joint makes the inserted rod inserted into the connecting piece due to the inclination of the concrete pile end face, so that a gap of 5mm may be formed between the end of the bent elastic piece and the blocking surface, and gaps of 0 to 5mm may exist between the blocking surface of the inserted rod of the mechanical joint at other positions and the end of the bent elastic piece in sequence, when the concrete pile is pulled out, one or two lower mechanical joints are first stressed, and other mechanical joints are not stressed, so that the lower mechanical joint is first damaged, and when the lower mechanical joint is damaged, other mechanical joints are sequentially stressed (i.e. in the whole pulling process, only one or two mechanical joints are simultaneously stressed at a time) and may be damaged in sequence. As shown in fig. 16 and 17, when the plunger is under-inserted into the connector, in fig. 17, the plunger of the lower mechanical joint is just engaged with the connector, and the end of the upper mechanical joint is inclined due to the end face of the concrete pile, so that when the plunger is inserted into the connector, the end of the bent elastic sheet does not enter the annular groove of the plunger, and therefore the plunger and the connector cannot be engaged with each other, and the connection of the pile fails (only one or two mechanical joints at the lower end of the end face of the concrete pile may be engaged with each other).

SUMMERY OF THE UTILITY MODEL

The utility model discloses a mechanical joint is proposed to the needle, and this mechanical joint can solve current mechanical joint and appear that the inserted bar crosses when inserting or owe to insert and make a stake joint strength reduce or connect the problem of failure.

The utility model discloses a technical means as follows:

the utility model provides a tooth mechanical joint, includes inserted bar and connecting piece, the inserted bar is in including the fixing base that is equipped with the external screw thread and setting plug on the fixing base, the connecting piece includes sleeve structure's connecting piece body and sets up connecting piece body one end is followed a plurality of shell fragments of buckling that connecting piece body's circumference was arranged, the shell fragment of buckling include with the shell fragment body that connecting piece body is connected is in with the setting the kink of connecting piece body one end is kept away from to the inside lateral buckling of connecting piece body, be equipped with first latch on the outer wall of plug, the inner wall of kink forms the joint face with the plug joint, be equipped with the second latch on the joint face, work as the plug inserts when in the connecting piece, first latch and the mutual block of second latch.

Further, the included angle between the tooth side surface of one side of the second latch, which is far away from the connecting piece body, and the central shaft of the connecting piece is more than or equal to 90 degrees, and the included angle between the tooth side surface of one side of the first latch, which faces the fixing seat, and the central shaft of the inserted bar is less than or equal to 90 degrees.

Further, the included angle between the tooth side surface of one side of the first latch facing the fixed seat and the central shaft of the inserted bar is 90 degrees, and the included angle between the tooth side surface of one side of the second latch far away from the connecting piece body and the central shaft of the connecting piece is 90 degrees.

Further, the first latch is a sawtooth tooth or a pagoda-shaped tooth, and the second latch is a sawtooth tooth or a pagoda-shaped tooth.

Furthermore, the inserted bar still includes the columniform connecting portion that is used for connecting fixing base and plug, the diameter of connecting portion is greater than the diameter of plug, be connected through the changeover portion of round platform shape between plug and the connecting portion.

Furthermore, a knob opening or a polygonal clamping groove is further formed in the inserting end of the inserting rod of the connecting piece body.

Further, the diameter of the bending part is smaller than that of the connecting piece body.

Further, still include circular card, the external diameter of circular card is greater than the circular diameter that the joint face encloses, before the inserted bar inserts the connecting piece, circular card is gone into the kink is kept away from the one end of connecting piece body, circular card will the buckling elastic piece outwards opens along radial direction.

The invention discloses a concrete pile connecting structure, which comprises a tooth mechanical joint, a first fixing sleeve and a second fixing sleeve, wherein one end of the first fixing sleeve is a main rib fixing end, the other end of the first fixing sleeve is in threaded connection with a fixing seat, one end of the second fixing sleeve is a main rib fixing end, and the other end of the second fixing sleeve is in threaded connection with a connecting piece body.

The invention discloses a concrete pile connecting structure, which comprises a tooth mechanical joint, a first end plate and a second end plate, wherein the first end plate is provided with an inserted bar, and the second end plate is provided with a connecting piece.

Compared with the prior art, tooth mechanical joint have following beneficial effect: 1. the bent parts of the inserted bar and the connecting piece are clamped by a clamping tooth structure, so that the inserted bar and the connecting piece can be firmly inserted, and the pulling resistance of the concrete pile is further ensured.

Drawings

FIG. 1 is a block diagram of a dental mechanical joint as disclosed in the present invention;

FIG. 2 is a front view of the connector;

FIG. 3 is a cross-sectional view of the connector;

FIG. 4 is a left side view of FIG. 2;

FIG. 5 is a view showing the construction of the insert rod;

fig. 6 is a first concrete pile connection structure with a tooth mechanical joint according to the present disclosure;

fig. 7 is a second concrete pile connection structure with a tooth mechanical joint according to the present disclosure;

fig. 8 is a structural view of the first header plate;

fig. 9 is a block diagram of a second header plate;

FIG. 10 is an enlarged view of the dashed box in FIG. 7;

FIG. 11a is a schematic view showing the inserted link not yet inserted into the connecting member when the circular snap ring is engaged with the bent portion;

FIG. 11b is a schematic view of the round snap ring being snapped at the bent portion, the insert rod being inserted into the connector and the plug end being in contact with the round snap ring;

fig. 12a is a structural view of a concrete pile with a connection structure according to the present invention during a manufacturing process, wherein steel plates are fixed to both ends of an end plate, and the steel plates are connected to the end plate by bolts;

fig. 12b is a structural view of the precast concrete pile obtained in fig. 12 a;

FIG. 12c is an enlarged view at B in FIG. 12B;

FIG. 12d is an enlarged view at C of FIG. 12 b;

FIG. 13 is a structural view of a conventional mechanical joint;

FIG. 14 is a schematic view of a prior art mechanical joint when the insert rod is inserted therethrough;

FIG. 15 is a diagram of a concrete pile connection structure when over-insertion occurs in a conventional mechanical joint, and the insertion rod is over-inserted due to the inclination of the pile end face;

FIG. 16 is a schematic view of a prior art mechanical joint when the bayonet is under-inserted;

fig. 17 is a connection structure diagram of a concrete pile when the existing mechanical joint is under-inserted, and the insertion rod is under-inserted due to the inclination of the pile end face.

In the figure: 1. the plug rod, 10, a fixed seat, 11, a plug, 110, a first latch, 12, a connecting part, 120, a transition part in a truncated cone shape, 2, a connecting piece, 20, a connecting piece body, 200, a polygonal clamping groove, 21, a bent elastic sheet, 210, an elastic sheet body, 211, a bent part, 212, a clamping surface, 213, a second latch, 3, a circular clamping sheet, 40, a first fixing sleeve, 41, a second fixing sleeve, 50, a first end plate, 500, a screw hole, 501, a rib passing groove, 51, a countersunk hole, 6 main ribs, 70, a bent elastic sheet end part, 71, a blocking surface, 72, a ring groove, 80, a fixed plate, 81, a tensioning plate, 82, a bolt, 84, a first concave hole, 85, a second concave hole, 90 and a rib fixing sleeve.

Detailed Description

Example 1

As shown in fig. 1, the tooth mechanical joint disclosed in the present invention comprises an insert rod 1 and a connecting member 2, wherein the insert rod 1 comprises a fixing seat 10 with external threads and a plug 11 disposed on the fixing seat 10, the connecting member 2 comprises a connecting member body 20 with a sleeve structure and a plurality of bending spring pieces 21 disposed at one end of the connecting member body 20 and arranged along the circumferential direction of the connecting member body 20, the outer wall of the connecting member body is provided with external threads, as shown in fig. 2 and 3, the bending spring pieces 21 comprise a spring piece body 210 connected with the connecting member body 20 and a bending portion 211 disposed at one end of the spring piece body away from the connecting member body and bent inwards, the outer wall of the plug 11 is provided with a first latch 110, the inner wall of the bending portion 211 forms a latch surface 212 for latching with the plug, and the latch surface 212 is provided with a second latch 213, when the plug is inserted into the connector, the first latch 110 and the second latch 213 are engaged with each other. The utility model discloses in, the tooth pitch and the length of latch can be according to the pulling force that receives between inserted bar and the connecting piece and the clearance that allows the production sets up, preferably, the tooth pitch of latch adopts 0.5mm, when the tooth pitch of latch is 0.5mm, back in the plug inserts the connecting piece, when mechanical joint is drawn the pulling force, the clearance that produces is 0.25mm at most between inserted bar and the connecting piece, the produced clearance of present mechanical joint that is less than far away in this clearance, can not appear simultaneously in shown plug does not insert the connecting piece completely and cause the problem of the unable joint of plug and connecting piece in 16 and 17.

Furthermore, an included angle between a tooth side surface of one side of the second latch, which is far away from the connector body, and a central axis of the connector is greater than or equal to 90 degrees (that is, the tooth side surface is perpendicular to the central axis of the connector or an inner side edge of the tooth side surface inclines towards a direction far away from the connector body), and an included angle between a tooth side surface of one side of the first latch, which is towards the fixing seat, and the central axis of the insert rod is less than or equal to 90 degrees (that is, the tooth side surface is perpendicular to the central axis of the insert rod or an outer side edge of the tooth side surface inclines towards one side. Further, the included angle between the tooth side surface of one side of the first latch facing the fixed seat and the central shaft of the inserted bar is 90 degrees, and the included angle between the tooth side surface of one side of the second latch far away from the connecting piece body and the central shaft of the connecting piece is 90 degrees. Therefore, when the inserted bar and the connecting piece are pulled, the bent elastic piece of the connecting piece cannot be subjected to outward component force, and the connection reliability is ensured.

Further, first latch is sawtooth or pagoda type tooth, the second latch is corresponding for sawtooth or pagoda type tooth, the tooth form of sawtooth tooth is for not the waist trapezoidal that varies, the flank angle of working face 3 degrees, non-working face flank angle 30 degrees, pagoda type tooth is for processing out a pitch diameter on having the taper external diameter one by one, the flank angle of the working face of pagoda type tooth has less angle, adopt sawtooth or pagoda type tooth to have better anti-back-extraction performance for plug and connecting piece firm in connection, and then guaranteed the anti-back-extraction performance of concrete pile.

Further, as shown in fig. 5, the insert rod 1 further includes a cylindrical connecting portion 12 for connecting the fixing seat 10 and the plug 11, the diameter of the connecting portion is larger than that of the plug, and the plug 10 and the connecting portion 12 are connected by a transition section 120 in a truncated cone shape, so that the strength of the insert rod can be ensured, and the volume of the connecting member can be reduced appropriately.

Further, the inserting end of the inserting rod of the connecting member body 20 is further provided with a knob opening or a polygonal clamping groove 200 for screwing with a tool to realize threaded connection, as shown in fig. 4, in this embodiment, the inserting end of the inserting rod is provided with a hexagonal clamping groove, and a hexagonal wrench can be inserted into the clamping groove to threadedly connect the connecting member with other structures.

Further, the diameter of the bending part 211 is smaller than the diameter of the connector body 20, that is, a certain gap is left between the outer side surface of the bending part 211 and the outer side surface of the connector body 20, so that the bending part is opened outwards when the insert rod is inserted, and the plug is clamped into the bending part.

Example 2

Fig. 6 shows a first concrete pile connecting structure with a tooth mechanical joint according to the present disclosure, which includes a rod 1, a connecting member 2, a first fixing sleeve 40 and a second fixing sleeve 41, and the structure of the rod and the connecting member is the same as that of embodiment 1, and will not be described in detail here.

First fixed sleeve 40 one end is the owner muscle stiff end, the other end with fixing base threaded connection, second fixed sleeve 41 one end is the owner muscle stiff end, the other end with connecting piece body threaded connection, the owner muscle stiff end is equipped with owner muscle fixed knot and constructs, and main muscle fixed knot constructs can be ka tai, bell mouth or screw hole, has been used for fixed PC steel bar, hank steel or screw-thread steel respectively, and fixed sleeve's concrete structure is described in detail in patent [ 201520648500.6 ], and here no longer describes in detail. The structure can be used for connecting the steel bar uplift pile.

Example 3

As shown in fig. 7 and fig. 10 for the second concrete pile connection structure with tooth mechanical joint of the present invention, including inserted bar 1, connecting piece 2, first end board 50 and second end board 51, the main muscle anchor eye of calabash form that has circumference equipartition on first end board and the second end board, main muscle anchor eye includes screw hole 500, cross muscle groove 501 and counter sink 502, first end board and second end board are fixed respectively at the both ends of prestressed concrete pile, the both ends of concrete pile owner muscle are fixed respectively in the counter sink of two end boards, be fixed with the inserted bar in the screw hole on the first end board, be fixed with the connecting piece in the screw hole on the second end board, different concrete piles can interconnect through this structure in order to realize the quick connection of concrete pile. The end plates connected with each other are also coated with reducing resin glue so as to meet the technical standard 3.0.11 of prestressed concrete pipe pile, the pile extension quantity of the pipe pile foundation is reduced, the joints are preferably positioned in a non-polluted soil layer, and welding or mechanical pile extension can be adopted. The pile joint and pile connecting steel part in the polluted soil layer should be coated with an anti-corrosion wear-resistant coating or the thickness of the steel part is increased, the corrosion allowance is not less than 2mm, and the specification of thermal shrinkage polyethylene sleeve film protection can also be adopted.

The production and processing process of the concrete pipe pile with the connection structure is as follows:

as shown in fig. 12a, 12b, 12c and 12d, two ends of a main reinforcement bar of the reinforcement cage are anchored in countersunk holes of a first end plate and a second end plate respectively, a fixing plate 80 is fixed outside the first end plate through a bolt, a tensioning plate 81 is fixed outside the second end plate through a bolt, the length of the bolt 82 connecting the first end plate and the fixing plate is greater than the sum of the thicknesses of the first end plate and the fixing plate, the length of the bolt 82 connecting the second end plate and the tensioning plate is greater than the sum of the thicknesses of the second end plate and the tensioning plate, after the concrete pile is poured, a first concave hole 84 is formed at one end of the first end plate, a second concave hole 85 is formed at one end of the second end plate, and the first concave hole can leave a certain accommodating space for a fixing seat of an insert rod so as to adjust the length of the positioning insert rod installed at. The second recess is adapted to receive an elongated portion of the connector relative to the header plate.

Can know through the course of working of above concrete pile, the utility model discloses a concrete pile connection structure, on the basis that does not change current concrete pile processing technology, only will be used for the bolt length that end board and fixed plate (tensioning plate) are connected to increase, and this connection structure has simple structure simultaneously, and processing and simple to operate, quick have advantages such as resistance to plucking performance is good simultaneously.

The utility model discloses do not change the structure of end board, "except that welding groove, stake cover hoop spread groove, prestressing force steel bar anchor hole, eliminating welding prestressing force groove, mechanical connection hole that accords with among the prestressed concrete tubular pile technical standard 4.1.2, the end plate surface should level and smooth, must not fluting and punch. The stipulation of' simultaneously, because connecting piece and inserted bar are fixed respectively in the main muscle anchor eye (the screw hole) of end board, improved the intensity in screw hole department, and then improved the anti-shear force of end board. Furthermore, when the concrete pile is produced, the bolt can carry out prestress treatment on the screw thread in the screw hole on the end plate (when the concrete pile is poured, the bolt is subjected to tensile stress, the bolt and the screw thread in the screw hole are mutually extruded to generate certain prestress deformation), and then the deformation of the screw hole in the end plate is reduced when the concrete pile is connected, and the pulling resistance of the concrete pile is further improved.

Preferably, as shown in fig. 8 and 9, the sequence direction of the screw holes and the countersunk holes on the first headboard is opposite to the sequence direction of the screw holes and the countersunk holes on the second headboard, in this embodiment, the sequence direction of the screw holes and the countersunk holes on the first headboard is clockwise (as shown in fig. 8, the screw hole of the uppermost main tendon anchor hole is on the right at the left countersunk hole, the screw hole of the lowermost main tendon anchor hole is on the left at the right countersunk hole, and the gourd-shaped structures at other positions rotate in sequence), and the sequence direction of the screw holes and the countersunk holes on the second headboard is counterclockwise (as shown in fig. 9, the screw hole of the uppermost main tendon anchor hole is on the left at the right countersunk hole, the screw hole of the lowermost main tendon anchor hole is on the right at the left countersunk hole, and the gourd-shaped structures at other positions rotate in sequence). By adopting the end plate with the structure, the main rib of a single concrete pile can be parallel to the axis of the concrete pile, meanwhile, when two or more sections of concrete piles are connected, each pair of corresponding main ribs of the concrete pile are all positioned on the same straight line, the end plate welding or mechanical joint connection can be adopted for splicing the upper section and the lower section of the pipe pile in accordance with the technical standard 5.3.8 of the prestressed concrete pipe pile, the joint is required to ensure that the longitudinal steel bar in the pipe pile and the end plate are equivalently transferred force, and the joint connection strength is not less than the pile body strength of the pipe pile. The regulation of' can further effectively ensure the uniformity of the pile body resisting the external force when the pile body is subjected to lateral pressure and/or shearing force.

Further, when the inserting process is carried out on the inserting rod and the connecting piece, in order to avoid mutual abrasion between the latch of the inserting rod and the latch on the clamping surface, as shown in fig. 11a, a circular card 3 can be fixed at the bent part, the outer diameter of the circular card is larger than the inner diameter of a circle enclosed by the bent part, the circular card can be clamped into the bent part from one end far away from the inserting of the inserting rod after the connecting piece is processed, the circular card enables the bent part to be outwards opened, the inner diameter of the circle enclosed by the bent part is increased, as shown in fig. 11b, when the inserting rod is inserted, the latch of the plug cannot rub with the latch of the clamping surface to avoid the abrasion of the latch, when the plug is in contact with the circular card, the plug pushes out the circular card, and the latch of the plug is clamped with the latch of the clamping surface due to the rebounding bent part.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a tooth mechanical joint, includes inserted bar (1) and connecting piece (2), inserted bar (1) is in including fixing base (10) and the setting that is equipped with the external screw thread plug (11) on fixing base (10), connecting piece (2) are in including sleeve structure's connecting piece body (20) and setting connecting piece body (20) one end is followed a plurality of shell fragment of buckling (21) that the circumference of connecting piece body (20) was arranged, shell fragment of buckling (21) include with shell fragment body (210) and the setting that connecting piece body (20) are connected are in the inside kink (211) of buckling of connecting piece body one end is kept away from to the shell fragment body, its characterized in that: be equipped with first latch (110) on the outer wall of plug (11), the inner wall of kink (211) forms joint face (212) with the plug joint, be equipped with the second latch on the joint face, work as the plug inserts when in the connecting piece, first latch (110) and the mutual block of second latch.

2. Dental mechanical joint according to claim 1, characterized in that: the tooth side surface of one side that connecting piece body (20) was kept away from in second latch (213) and the contained angle more than or equal to 90 degrees of the center pin of connecting piece, the contained angle less than or equal to 90 degrees of the tooth side surface of one side of first latch (110) towards fixing base (10) and the center pin of inserted bar (1).

3. Dental mechanical joint according to claim 1, characterized in that: the included angle between the tooth side surface of one side of the first latch (110) facing the fixed seat (10) and the central shaft of the inserted bar (1) is 90 degrees, and the included angle between the tooth side surface of one side of the second latch (213) far away from the connecting piece body (20) and the central shaft of the connecting piece is 90 degrees.

4. Dental mechanical joint according to claim 3, wherein: the first latch is a sawtooth tooth or a pagoda-shaped tooth, and the second latch is a sawtooth tooth or a pagoda-shaped tooth.

5. Dental mechanical joint according to claim 1, characterized in that: the inserted bar (1) further comprises a cylindrical connecting portion (12) used for connecting the fixed seat (10) and the plug (11), the diameter of the connecting portion (12) is larger than that of the plug, and the plug is connected with the connecting portion (12) through a transition section (120) in a circular truncated cone shape.

6. Dental mechanical joint according to claim 1, characterized in that: the inserted end of the inserted bar of the connecting piece body is also provided with a knob opening or a polygonal clamping groove.

7. Dental mechanical joint according to claim 1, characterized in that: the diameter of the bending part is smaller than that of the connecting piece body.

8. Dental mechanical joint according to claim 1, characterized in that: still include circular card, the external diameter of circular card is greater than the circular diameter that the joint face encloses, before the inserted bar inserts the connecting piece, circular card is gone into the kink is kept away from the one end of connecting piece body, circular card will the buckling elastic piece is outwards opened along radial direction.

9. The utility model provides a concrete pile connection structure which characterized in that: the dental mechanical joint according to any one of claims 1 to 6, further comprising a first fixing sleeve (40) and a second fixing sleeve (41), wherein one end of the first fixing sleeve is a main rib fixing end, the other end of the first fixing sleeve is in threaded connection with the fixing seat, one end of the second fixing sleeve is a main rib fixing end, and the other end of the second fixing sleeve is in threaded connection with the connecting piece body.

10. The utility model provides a concrete pile connection structure which characterized in that: dental mechanical joint comprising any of claims 1 to 6, further comprising a first end plate (50) on which said bayonet is mounted and a second end plate (51) on which said connector is mounted.