CN210562156U

CN210562156U - Elastic clamp mechanical joint and concrete pile connecting structure

Info

Publication number: CN210562156U
Application number: CN201921260585.5U
Authority: CN
Inventors: 袁雪峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-05-19
Anticipated expiration: 2029-08-05

Abstract

The utility model discloses a connection structure of a spring clip mechanical joint and a concrete pile, wherein the spring clip mechanical joint comprises an inserted bar, a fixed sleeve, an elastic nut and a limiting part; the inserted link comprises a fixed seat and a plug, and the outer wall of the plug is provided with a latch; the fixing sleeve comprises a fixing sleeve body, an accommodating space and an elastic nut accommodating cavity are formed in the fixing sleeve body, the elastic nut can radially contract, and a clamping tooth is arranged in the elastic nut; the limiting piece is arranged at one end, far away from the accommodating space, of the elastic nut accommodating cavity, and when the elastic nut is arranged in the elastic nut accommodating cavity, the limiting piece can axially limit the elastic nut in the elastic nut accommodating cavity; when the inserted bar is inserted into the fixing sleeve, the plug is inserted into the elastic nut, and the latch on the inserted bar and the elastic nut are mutually clamped. The elastic clamp mechanical joint has the advantages of simple structure, convenience in installation and the like.

Description

Elastic clamp mechanical joint and concrete pile connecting structure

Technical Field

The utility model relates to a concrete pile connects technical field, concretely relates to bullet card mechanical joint.

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.

In order to realize the quick connection of the precast concrete pile, mechanical joints are often installed at two ends of the pile in engineering, however, the existing mechanical joints are complex in structure, complex in processing and installation process and labor-consuming.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the needle provides an bullet card mechanical joint, and it is complicated to have solved current bullet card mechanical joint's structure, installs inconvenient problem.

The utility model discloses a technical means as follows:

a spring clip mechanical joint comprises an insertion rod, a fixed sleeve, an elastic nut and a limiting piece; the inserted link comprises a fixed seat and a plug arranged on the fixed seat, and the outer wall of the plug is provided with a latch; the fixing sleeve comprises a fixing sleeve body, one end of the fixing sleeve body is an insertion rod insertion end, an accommodating space is arranged in the fixing sleeve body close to the insertion rod insertion end, and an elastic nut accommodating cavity is arranged far away from the insertion rod insertion end; the elastic nut can be contracted in the radial direction, the elastic nut is arranged in the elastic nut accommodating cavity, and the inner wall of the elastic nut is provided with clamping teeth; the limiting piece is arranged at one end, far away from the accommodating space, of the elastic nut accommodating cavity, and axially limits the elastic nut in the elastic nut accommodating cavity by the limiting piece; the inserted bar can be inserted into the fixing sleeve from the inserted end of the inserted bar, when the inserted bar is inserted into the fixing sleeve, the plug is inserted into the elastic nut, and the latch on the inserted bar and the elastic nut are mutually clamped.

Furthermore, the elastic nut comprises an elastic nut body, and first openings communicated with the two ends of the elastic nut body are formed in the side wall of the elastic nut body.

Furthermore, a plurality of second openings extending from one end of the elastic nut body to the other end are further formed in the side wall of the elastic nut body.

Further, the elastic nut comprises an elastic nut body, a third opening and a fourth opening are formed in the elastic nut body, and the third opening and the fourth opening extend from the two ends of the elastic nut body to the other end of the elastic nut body respectively.

Further, the latch is saw-shaped tooth or pagoda type tooth.

Further, the end of the plug is provided with a first tapered surface.

Further, the inner diameter of the insertion end of the insertion rod of the fixing sleeve body is provided with a second conical surface, a third conical surface is arranged between the fixing seat and the plug, and when the insertion rod is inserted into the fixing sleeve, the second conical surface is abutted to the third conical surface.

The utility model provides a concrete pile connection structure, include the utility model discloses an bullet card mechanical joint, still include first position sleeve and second position sleeve, first position sleeve one end is main muscle stiff end, the other end with the fixing base is connected, second position sleeve one end is main muscle stiff end, the other end with fixing sleeve threaded connection.

The utility model provides a concrete pile connection structure, includes the utility model discloses an bullet card mechanical joint, still include first end board and second end board, install on the first end board the inserted bar, install on the second end board fixed sleeve.

Compared with the prior art, bullet card mechanical joint have following beneficial effect: 1. the elastic clamp mechanical joint has the advantages of simple structure and convenience in processing; 2. the elastic nut can be rapidly installed in the fixed sleeve through the limiting part, so that the fixed sleeve, the elastic nut and the limiting part are of an integrated structure, and the fixed sleeve is conveniently and rapidly connected with the positioning sleeve (the end plate).

Drawings

Fig. 1 is a structural diagram of a snap mechanical joint disclosed in the present invention;

FIG. 2 is a view showing the construction of the insert rod;

FIG. 3a is a top view of the retaining sleeve;

FIG. 3b is a cross-sectional view of the fixing sleeve;

FIG. 4a is a structural diagram of a clamp spring;

FIG. 4b is a cross-sectional view of the clamp spring;

FIG. 5a is a top view of a first type of elastic nut;

3 FIG. 35 3b 3 is 3a 3 cross 3- 3 sectional 3 view 3 taken 3 at 3A 3- 3A 3 of 3 FIG. 35 3a 3; 3

FIG. 5c is a bottom view of the first elastic nut;

FIG. 6a is a top view of a second elastomeric nut;

FIG. 6b is a cross-sectional view at F-F of FIG. 6 a;

FIG. 6c is a bottom view of the second elastic nut;

FIG. 7 is a structural view of a first concrete joint structure of the present invention;

FIG. 8 is a block diagram of a concrete pile connection having a first concrete connection structure;

FIG. 9 is an enlarged view of FIG. 8 within the dashed box;

FIG. 10 is a structural view of a second concrete joint structure of the present disclosure;

FIG. 11 is an enlarged view of FIG. 10 within the dashed box;

fig. 12 is a structural view of the first header plate;

fig. 13 is a block diagram of a second header plate;

fig. 14a is a structural view of a concrete pile having 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. 14b is a structural view of the precast concrete pile obtained in fig. 14 a;

FIG. 14c is an enlarged view at B in FIG. 14B;

fig. 14d is an enlarged view at C in fig. 14 b.

In the figure: 1. the plug rod comprises a plug rod body 10, a fixed seat 11, a plug 110, a latch 111, a first conical surface 12 and a third conical surface;

2. the clamping device comprises a fixed sleeve, 20, a fixed sleeve body, 201, a second conical surface, 21, an inserting end of an inserting rod, 22, an accommodating space, 23, an elastic nut accommodating cavity, 230, a first clamping groove, 231 and an elastic nut abutting surface;

3. the elastic nut 30, the elastic nut body 32, the first opening 33, the second opening 34, the third opening 35 and the fourth opening;

4. a stopper 40, a radial protrusion;

50. a first positioning sleeve 51 and a second positioning sleeve;

60. the first end plate 600, the screw holes 601, the rib passing grooves 602, the counter sink holes 61 and the second end plate;

70. a main rib;

80. the fixing plate 81, the tensioning plate 82, the bolt 84, the first concave hole, the second concave hole and the 85.

Detailed Description

Example 1

Fig. 1 shows that the elastic clip mechanical joint of the present invention includes an insertion rod 1, a fixing sleeve 2, an elastic nut 3 and a limiting member 4. As shown in fig. 2, the insert rod 1 includes a fixing seat 10 and a plug 11 disposed on the fixing seat 10, and a latch 110 is disposed on an outer wall of the plug 11; as shown in fig. 3a and 3b, the fixing sleeve 2 includes a fixing sleeve body 20, one end of the fixing sleeve body 20 is a plunger insertion end 21, an accommodating space 22 is provided inside the fixing sleeve body 20 close to the plunger insertion end 21, and an elastic nut accommodating cavity 23 is provided far from the plunger insertion end 21.

The elastic nut 3 is a nut capable of radially contracting, the elastic nut 3 is arranged in the elastic nut accommodating cavity 23, as shown in fig. 5a, 5b and 5c, the first structure of the elastic nut is shown, the elastic nut 3 comprises an elastic nut body 30, first openings 32 (communicating the inner wall and the outer wall of the elastic nut) communicating the two ends of the elastic nut body are arranged on the side wall of the elastic nut body 30, and latch teeth are arranged on the inner wall of the elastic nut 3; as shown in fig. 4a and 4b, the limiting member 4 is a snap spring for a hole, a first snap groove is arranged in the elastic nut accommodating cavity, preferably, a radial protrusion 40 is arranged in an inner diameter of the snap spring to increase a contact area between the snap spring and an end of the elastic nut, and when the elastic nut 3 is placed in the elastic nut accommodating cavity 23, the snap spring axially limits the elastic nut 3 in the elastic nut accommodating cavity 23 through the first snap groove; the inserted bar 1 can insert from the inserted bar inserts the end insert in the fixed sleeve 2, when the inserted bar 1 inserts in the fixed sleeve 2, the plug 11 inserts in the elastic nut 3, the latch on inserted bar and the elastic nut is mutual block, and then realizes the connection of inserted bar and fixed sleeve. Specifically, when the plug passes through the accommodating space 22 and contacts with the elastic nut, the outer diameter of the plug is larger than the inner diameter of the elastic nut, during the plug insertion process, the elastic nut is opened from the opening by the instant force of the plug, the inner diameter of the elastic nut is increased, the plug enters the elastic nut, and then the restoring force of the spring clamps the inserted bar and the latch on the elastic nut. The locating part also can adopt the snap ring structure, and elastic nut holds the chamber promptly and keeps away from the one end processing of accommodation space and has the screw thread, is equipped with the external screw thread on the snap ring, and snap ring threaded connection is used for holding elastic nut axial spacing in elastic nut holds the chamber.

Further, still evenly be equipped with a plurality of second openings 33 that extend to the other end by elastic nut one end on the lateral wall of elastic nut body 30, the length of second opening is less than the length of elastic nut body, increases the radial shrinkage can of elastic nut that the second opening has increased on the elastic nut body to the grafting of elastic nut and inserted bar.

Further, the latch is saw-shaped tooth or pagoda type tooth.

Further, the end of the plug 11 is provided with a first tapered surface 111, which can facilitate the insertion of the plug into the elastic nut.

Further, the inner diameter of the insertion end of the insertion rod of the fixing sleeve body 20 is provided with a second tapered surface 201, a third tapered surface 12 is arranged between the fixing seat 10 and the plug 11, when the insertion rod 1 is inserted into the fixing sleeve 2, the second tapered surface 201 is abutted against the third tapered surface 12, the second tapered surface is abutted against the third tapered surface, the insertion rod and the positioning sleeve are coaxial, the connection strength is guaranteed, and the pulling resistance of the concrete pile is improved.

As shown in fig. 6a, 6b and 6c, the second structure of the elastic nut 3 is that the elastic nut 3 includes an elastic nut body 30, the elastic nut body 30 is provided with a third opening 34 and a fourth opening 35 at regular intervals, the third opening 34 and the fourth opening 35 respectively extend from two ends of the elastic nut body to the other end, as shown in fig. 6b, the third opening extends from the lower side to the upper side, and the fourth opening extends from the upper side to the lower side.

Example 2

As shown in fig. 7, the utility model discloses a concrete pile connection structure, including bullet card mechanical joint, first position sleeve 50 and second position sleeve 51, bullet card mechanical joint adopts the bullet card mechanical joint disclosed in embodiment 1, first position sleeve one end is main muscle stiff end, the other end with fixing base threaded connection, second position sleeve one end is main muscle stiff end, the other end with fixing sleeve threaded connection, main muscle stiff end are equipped with the main muscle fixed knot who can fix main muscle 70 and construct, and main muscle fixed knot constructs can be ka tai, bell mouth or screw hole, has been used for fixed PC rod iron, hank steel or screw thread steel respectively, and the concrete structure of position sleeve 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.

As shown in fig. 8 and 9, the first positioning sleeve and the second positioning sleeve are respectively fixed at two ends of the concrete pile connected through the elastic clamp mechanical joint, the first positioning sleeve is connected with the insertion rod, the second positioning sleeve is connected with the fixing sleeve, and different concrete piles can be quickly connected through the structure.

Further, as shown in fig. 9, the end of the concrete pile is further provided with an apron board, in this embodiment, the apron board is a checkered plate, the checkered surface of the checkered plate faces to one side of the concrete so that the apron board is connected with the concrete pile more firmly, meanwhile, the outer diameter of one end of the concrete pile is smaller than that of the other end, so that when two piles are connected, the apron board of one concrete pile can be sleeved on the apron board of the other pile, the apron board and the end surface of the pile can be coated with epoxy resin glue, the contact part of the two apron boards is welded so as to meet 3.0.11' in the technical standard of prestressed concrete pipe piles, the number of piles is reduced, the joint is preferably located in a non-polluted soil layer, and welding or mechanical pile splicing 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.

Example 3

As shown in fig. 10 and 11, a second form of the concrete pile connecting structure according to the present invention comprises a snap mechanical joint, a first end plate 60 and a second end plate 61, wherein the snap mechanical joint is the snap mechanical joint disclosed in example 1, as shown in fig. 12 and 13, the first end plate and the second end plate are provided with gourd-shaped main reinforcement anchor holes uniformly distributed in the circumferential direction, the main reinforcement anchor holes include screw holes 600, reinforcement passing grooves 601 and counter bores 602, the first end plate and the second end plate are respectively fixed at two ends of the prestressed concrete pile, two ends of the main reinforcement of the concrete pile are respectively fixed in the counter bores of the two end plates, be fixed with inserted bar 1 in the screw hole 600 on the first end board, be fixed with fixed sleeve 2 in the screw hole 600 on the second end board, be installed flexible nut 3 and locating part 4 in the fixed sleeve 2, different concrete piles can interconnect in order to realize the high-speed joint of concrete pile through this structure.

Preferably, as shown in fig. 12 and 13, 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. 12, 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. 13, 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 elastic clamping 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 can 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.

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

as shown in fig. 14a, 14b, 14c and 14d, two ends of the main reinforcement bar of the reinforcement cage are anchored in the countersunk holes 602 of the first end plate 60 and the second end plate 61, the first end plate is externally fixed with the fixing plate 80 by bolts, the second end plate is externally fixed with the tension plate 81 by bolts, 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 tension plate is greater than the sum of the thicknesses of the second end plate and the tension 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 the fixing base of the plunger so as to adjust the length of the positioning plunger mounted at the first end. The second recess is adapted to receive an extended portion of the mounting sleeve 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 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 bullet card mechanical joint which characterized in that: comprises an inserted link (1), a fixed sleeve (2), an elastic nut (3) and a limiting piece (4);

the inserted bar (1) comprises a fixed seat (10) and a plug (11) arranged on the fixed seat (10), and the outer wall of the plug (11) is provided with a latch (110);

the fixing sleeve (2) comprises a fixing sleeve body (20), one end of the fixing sleeve body (20) is an inserted bar inserting end (21), an accommodating space (22) is arranged in the fixing sleeve body (20) close to the inserted bar inserting end (21), and an elastic nut accommodating cavity (23) is arranged far away from the inserted bar inserting end (21);

the elastic nut (3) can be radially contracted, the elastic nut (3) is arranged in the elastic nut accommodating cavity (23), and the inner wall of the elastic nut (3) is provided with clamping teeth;

the limiting piece (4) is arranged at one end, far away from the accommodating space (22), of the elastic nut accommodating cavity (23), and the elastic nut (3) is axially limited in the elastic nut accommodating cavity (23) by the limiting piece (4);

the inserted bar (1) can be inserted into the fixing sleeve (2) from the inserted bar insertion end (21), when the inserted bar (1) is inserted into the fixing sleeve (2), the plug (11) is inserted into the elastic nut (3), and the clamping teeth on the inserted bar (1) and the elastic nut (3) are clamped with each other.

2. The mechanical bullet-trap connector of claim 1 further comprising: the elastic nut (3) comprises an elastic nut body (30), and first openings (32) communicated with the two ends of the elastic nut body are formed in the side wall of the elastic nut body (30).

3. The mechanical bullet-trap connector of claim 2 further comprising: the side wall of the elastic nut body (30) is also provided with a plurality of second openings (33) extending from one end of the elastic nut body (30) to the other end.

4. The mechanical bullet-trap connector of claim 1 further comprising: the elastic nut comprises an elastic nut body (30), a third opening (34) and a fourth opening (35) are formed in the elastic nut body (30), and the third opening (34) and the fourth opening (35) extend from two ends of the elastic nut body (30) to the other end respectively.

5. The mechanical bullet-trap connector of claim 1 further comprising: the latch is saw-shaped tooth or pagoda-shaped tooth.

6. The mechanical bullet-trap connector of claim 1 further comprising: the end of the plug (11) is provided with a first conical surface (111).

7. The mechanical bullet-trap connector of claim 1 further comprising: be equipped with second conical surface (201) on the internal diameter that the inserted bar of fixed sleeve body (20) inserted the end, be equipped with third conical surface (12) between fixing base (10) and plug (11), work as inserted bar (1) inserts when in fixed sleeve (2), second conical surface (201) and third conical surface (12) butt.

8. The utility model provides a concrete pile connection structure which characterized in that: the elastic clamp mechanical joint comprises a first positioning sleeve (50) and a second positioning sleeve (51), wherein one end of the first positioning sleeve is a main rib fixing end, the other end of the first positioning sleeve is connected with the fixing seat, one end of the second positioning sleeve is a main rib fixing end, and the other end of the second positioning sleeve is in threaded connection with the fixing sleeve.

9. The utility model provides a concrete pile connection structure which characterized in that: the mechanical bullet card connector according to any one of the claims 1 to 7, further comprising a first end plate (60) and a second end plate (61), wherein the insertion rod (1) is mounted on the first end plate (60), and the fixing sleeve (2) is mounted on the second end plate (61).