Self-locking bolt connector and precast pile

Abstract

The embodiment of the utility model provides a self-locking bolt connector and a precast pile, and relates to the field of pipe pile construction. The self-locking bolt connector comprises a bolt, a connector base, a buckling cylinder and a sleeve. A containing hole is formed in the connector base, a clamping table is arranged on the side wall of the containing hole in a protruding mode, the buckling barrel and the sleeve are arranged at the two ends of the plug pin in a sleeving mode respectively, the plug pin and the buckling barrel are contained in the containing hole, the plug pin is used for pushing the buckling barrel to pass through the clamping table under the action of external force, and the clamping table is used for abutting against the buckling barrel to move reversely. In the using process of the self-locking bolt connector, the buckling barrel can be placed in the connector base firstly, the other end of the bolt is used for pushing the buckling barrel to move and pass through the clamping table, meanwhile, the buckling barrel is arranged on the bolt in a sleeving mode, and then inserting operation is achieved; the clamping table is used for abutting against and limiting the buckle cylinder and the plug pin which move in the reverse direction, and then the self-locking purpose is achieved. Or the buckle cylinder can be sleeved on the bolt and is inserted into the joint seat along with the bolt. The number of parts of the self-locking bolt connector is small, manufacturing cost is reduced, and installation convenience is improved.

Description

Technical Field

[0001] The utility model relates to the field of pipe pile construction, in particular to a self-locking latch joint and a prefabricated pile. Background Art

[0002] In the construction process of precast concrete piles, a pin joint is usually used to connect the upper and lower piles to transfer force. Therefore, the primary goal of the pin joint is to achieve an equal strength connection with the pile. On the basis of meeting the equal strength connection, the requirements of construction convenience and cost rationality must also be considered.

[0003] However, the existing plug connector includes a ball structure, a stop structure, a spring structure, a plug rod ball structure, and a buckle barrel structure, etc., which has a large number of parts and a complex structure, making the installation convenience low and the manufacturing cost high. Most of the existing buckle barrel structure plug connectors need to cooperate with springs. Whether the plug is stuck is closely related to the installation position of the spring. If the spring is not placed flat, the plug cannot be inserted tightly. Utility Model Content

[0004] The utility model provides a self-locking latch joint and a prefabricated pile, which can improve installation convenience and reduce manufacturing costs by reducing the number of parts.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] The embodiment of the utility model provides a self-locking plug connector, which includes:

[0007] Latches, connector sockets, buckle barrels and sleeves;

[0008] Among them, the joint seat is provided with a accommodating hole, the side wall of the accommodating hole is protrudingly provided with a card platform, the buckle cylinder is sleeved on the head end of the pin, the pin and the buckle cylinder are both accommodated in the accommodating hole, the end of the pin is fixedly connected to the sleeve, the pin is used to push the buckle cylinder through the card platform under the action of external force, and the card platform is used to resist the buckle cylinder from moving in the opposite direction.

[0009] Optionally, the buckle tube includes a buckle tube body and an elastic flap connected to each other, an angle α is formed between the elastic flap and the end face of the buckle tube body, 90°≤α≤130°, and the elastic flap is sleeved on the outer side wall of the pin and is used to expand or contract under the action of external force.

[0010] Optionally, the buckle tube further includes a limit platform, which is connected to an end of the elastic flap away from the buckle tube body, and the limit platform is abutted against the clamping platform and the latch at the same time.

[0011] Optionally, an angle β is formed between the limiting platform and the side wall of the elastic flap, and 75°≤β≤90°.

[0012] Optionally, the buckle tube body includes a main body portion and a connecting portion connected to each other, the connecting portion is arranged at the edge of the main body portion, and one end of the elastic flap is arranged at the connecting portion and is spaced apart from the main body portion.

[0013] Optionally, the accommodating hole includes a first accommodating cavity and a second accommodating cavity that are connected, and the first accommodating cavity and the second accommodating cavity are respectively located on both sides of the card platform, and the latch is used to push the buckle cylinder from the first accommodating cavity through the card platform to the second accommodating cavity under the action of external force, and the buckle cylinder is supported on the card platform.

[0014] Optionally, a first inclined surface is provided on one side of the card platform close to the first accommodating cavity, and a third inclined surface matching the first inclined surface is provided on the buckle tube;

[0015] And / or, a second inclined surface is provided on a side of the card platform close to the second accommodating cavity.

[0016] Optionally, the latch includes a plug portion, an extension portion and a positioning portion which are connected in sequence, the buckle sleeve is sleeved on the plug portion, and the sleeve is fixedly connected to the positioning portion.

[0017] Optionally, the side wall of the plug part is inclined, and the outer diameter of the plug part gradually decreases in the direction away from the extension part; a limiting groove is provided at one end of the extension part close to the plug part, and the limiting groove cooperates with the buckle tube.

[0018] The embodiment of the utility model further provides a prefabricated pile, which comprises: a plurality of main bars and the self-locking pin joint, wherein the main bars are connected to the joint seat or the sleeve.

[0019] The beneficial effects of the self-locking pin joint and prefabricated pile of the embodiment of the utility model include, for example:

[0020] The self-locking plug connector includes a plug, a connector seat, a buckle tube and a sleeve; wherein the connector seat is provided with a receiving hole, the side wall of the receiving hole is provided with a convex clamping platform, the buckle tube and the sleeve are respectively sleeved on the two ends of the plug, the plug and the buckle tube are both accommodated in the receiving hole, the plug is used to push the buckle tube through the clamping platform under the action of external force, and the clamping platform is used to resist the buckle tube to move in the opposite direction. During the use of the self-locking plug connector, the sleeve is pre-buried in the upper section pile, the plug is fixedly connected in the sleeve, and the connector seat is pre-buried in the lower section pile. The buckle tube can be placed in the connector seat first, and the other end of the plug is used to push the buckle tube to move and pass through the clamping platform, and at the same time, the buckle tube is sleeved on the plug, thereby realizing the plug-in operation; the clamping platform is used to resist and limit the buckle tube and the plug that move in the opposite direction, thereby realizing the purpose of self-locking; the buckle tube can also be sleeved on the plug first and inserted into the connector seat together with the plug. The number of parts of the self-locking plug connector is small, which reduces the manufacturing cost and improves the convenience of installation.

[0021] The prefabricated pile includes a self-locking pin joint, which has all the functions of a self-locking socket joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a cross-sectional schematic diagram of a self-locking latch connector provided in an embodiment of the utility model at a first viewing angle;

[0024] Figure 2 It is a cross-sectional schematic diagram of the self-locking latch connector provided in the embodiment of the utility model at a second viewing angle;

[0025] Figure 3 It is a cross-sectional schematic diagram of the self-locking latch connector provided in the embodiment of the utility model at a third viewing angle;

[0026] Figure 4 It is a cross-sectional schematic diagram of a connector base provided in an embodiment of the utility model;

[0027] Figure 5 A schematic cross-sectional view of a latch provided in an embodiment of the present utility model;

[0028] Figure 6 It is a cross-sectional schematic diagram of a buckle barrel provided in an embodiment of the utility model;

[0029] Figure 7 It is a cross-sectional schematic diagram of a sleeve provided in an embodiment of the utility model;

[0030] Figure 8 Schematic diagram of the assembly of the sleeve latch, buckle barrel and connector seat provided in the embodiment of the utility model Figure 1 ;

[0031] Fig. 9 Schematic diagram of the assembly of the sleeve latch, buckle barrel and connector seat provided in the embodiment of the utility model Figure 2 ;

[0032] Fig.10 Schematic diagram of the assembly of the sleeve latch, buckle barrel and connector seat provided in the embodiment of the utility model Figure 3 .

[0033] Icons: 100-self-locking latch connector; 110-connector seat; 111-accommodating hole; 1101-first accommodating cavity; 1102-second accommodating cavity; 1103-first positioning cavity; 112-card platform; 1121-first inclined surface; 1122-second inclined surface; 120-latch; 121-plug part; 122-extension part; 1221-limiting groove; 123-positioning part; 130-buckle tube; 1301-third inclined surface; 131-buckle tube body; 1311-body; 1312-connecting part; 132-elastic flap; 133-limiting platform; 140-sleeve; 141-second positioning cavity. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0038] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0039] The terms "comprises," "comprising," or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0040] Unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0041] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0042] Please refer to Figure 1-Figure 10 The self-locking pin connector 100 and the prefabricated pile provided in the embodiment of the utility model can solve the above-mentioned problems, which will be described in detail below.

[0043] refer to Figure 1-Figure 3 The self-locking bolt connector 100 includes a bolt 120, a connector seat 110, a buckle tube 130 and a sleeve 140;

[0044] Among them, the connector seat 110 is provided with a receiving hole 111, and a clamping platform 112 is protruded from the side wall of the receiving hole 111. The buckle tube 130 is sleeved on the head end of the latch 120. The latch 120 and the buckle tube 130 are both accommodated in the receiving hole 111. The end of the latch 120 is fixedly connected to the sleeve 140. The latch 120 is used to push the buckle tube 130 through the clamping platform 112 under the action of external force, and the clamping platform 112 is used to resist the buckle tube 130 from moving in the reverse direction.

[0045] During the use of the self-locking plug connector 100, the buckle tube 130 can be placed in the receiving hole 111, and the sleeve 140 can be sleeved on one end of the plug 120, and the other end of the plug 120 can be used to push the buckle tube 130 to move and pass through the clamping platform 112, and the buckle tube 130 is sleeved on the plug 120, thereby realizing the plugging operation; the clamping platform 112 is used to hold and limit the buckle tube 130 and the plug 120 moving in the opposite direction, thereby realizing the purpose of self-locking. The self-locking plug connector 100 has a small number of parts, which reduces the manufacturing cost and improves the convenience of installation.

[0046] It is worth noting that the clamping platform 112 can be formed by radially protruding on the side wall of the receiving hole 111, and the clamping platform 112 can extend along the circumferential side wall of the receiving hole 111 to form a ring-shaped continuous structure, thereby realizing the reverse holding effect on the buckle cylinder 130. Of course, on the basis of ensuring the directional holding effect on the buckle cylinder 130, the clamping platform 112 can also be a discontinuous structure in the circumferential direction of the receiving hole 111.

[0047] In addition, through holes are provided at the ends of the joint seat 110 and the sleeve 140 that are away from each other. The through holes are of a small mouth and a large bottom structure. The through holes are used to accommodate the main reinforcement in the connected pipe piles. The main reinforcement is of a T-shaped structure and can be accommodated in the through holes to prevent it from falling out. The main reinforcement can specifically be a steel rod.

[0048] refer to Figure 1-Figure 4 The accommodating hole 111 includes a first accommodating cavity 1101 and a second accommodating cavity 1102 which are connected to each other. The first accommodating cavity 1101 and the second accommodating cavity 1102 are respectively located on both sides of the card table 112. The inner diameter of the first accommodating cavity 1101 is larger than the inner diameter of the second accommodating cavity 1102. The latch 120 is used to push the buckle tube 130 from the first accommodating cavity 1101 through the card table 112 and move to the second accommodating cavity 1102 under the action of external force.

[0049] During the assembly operation, the buckle tube 130 can be first placed in the first accommodating cavity 1101. The inner diameter of the first accommodating cavity 1101 is larger, and the buckle tube 130 is in a dilated state so that the latch 120 can be inserted into the buckle tube 130; when the buckle tube 130 passes through the card table 112, it will shrink under the support of the card table 112 and cling to the side wall of the latch 120; when the buckle tube 130 enters the second accommodating cavity 1102, the buckle tube 130 will dilate again, but due to Because the inner diameter of the second accommodating cavity 1102 is smaller than the inner diameter of the first accommodating cavity 1101, the degree of expansion of the buckle tube 130 is lower than the degree of expansion in the first accommodating cavity 1101; when the latch 120 is subjected to a reverse force and moves toward the first accommodating cavity 1101 along the second accommodating cavity 1102, the buckle tube 130 will be supported between the latch 120 and the card platform 112, thereby preventing the latch 120 and the buckle tube 130 from moving out of the second accommodating cavity 1102.

[0050] refer to Figure 1-Figure 4 The accommodating hole 111 further includes a first positioning cavity 1103 , which is connected to an end of the first accommodating cavity 1101 away from the second accommodating cavity 1102 , and the first positioning cavity 1103 cooperates with the latch 120 .

[0051] refer to Figure 4 In order to ensure the smooth movement of the buckle tube 130 from the first accommodating cavity 1101 toward the second accommodating cavity 1102, a first inclined surface 1121 may be provided on a side of the card table 112 close to the first accommodating cavity 1101, and the first inclined surface 1121 is used to cooperate with the latch seat.

[0052] In addition, a third inclined surface 1301 matching with the first inclined surface 1121 is disposed on the buckle tube 130 , and the third inclined surface 1301 is formed on the limiting platform 133 .

[0053] The function of the second inclined surface 1122 is to facilitate the gradual contraction of the elastic petal 132 when the buckle tube is placed in 1101 and moves downward, so as to facilitate the smooth insertion of the latch 120. It is worth noting that the first inclined surface 1121 and the side wall of the first accommodating cavity 1101 are set at an obtuse angle, and the second inclined surface 1122 and the side wall of the second accommodating cavity 1102 are also set at an obtuse angle, and the degree is preferably between 120° and 150°, and can be specifically 120°, 125°, 130°, 135°, 140°, 145°, 150°, etc.

[0054] refer to Figure 3 and Figure 7 The sleeve 140 is used to connect and fix the plug 120 , and the sleeve 140 is abutted against the connector seat 110 , and the plug 120 is used to cooperate with the receiving hole 111 when the sleeve 140 is abutted against the connector seat 110 .

[0055] Specifically, the sleeve 140 can abut against the connector seat 110 , and the latch 120 can cooperate with the first positioning cavity 1103 when the two are abutted against each other, thereby further improving the plug-in matching stability of the latch 120 , the sleeve 140 and the connector seat 110 .

[0056] It should be noted that the sleeve 140 is provided with a second positioning cavity 141, which can be sleeved on the end of the pin 120 through the second positioning cavity 141. The second positioning cavity 141 and the pin 120 can be an interference fit or a threaded fit. Since the threaded fit has a certain self-locking property, the threaded fit is preferred.

[0057] refer to Figure 1-Figure 5 The latch 120 includes a plug portion 121, an extension portion 122 and a positioning portion 123 which are connected in sequence. The buckle tube 130 is sleeved on the plug portion 121, and the sleeve 140 is sleeved on the positioning portion 123. The outer diameter of the positioning portion 123 is larger than the outer diameters of the extension portion 122 and the plug portion 121. The positioning portion 123 is used to cooperate with the accommodating hole 111.

[0058] Specifically, the positioning portion 123 is used to cooperate with the first positioning cavity 1103 and the second positioning cavity 141, and the plug portion 121 is used to push the buckle tube 130 to move from the first accommodating cavity 1101 to the second accommodating cavity 1102. It should be noted that when the positioning portion 123 and the two positioning cavities are threaded, an external thread needs to be provided on the outer wall of the positioning portion 123.

[0059] refer to Figure 5 The side wall of the plug portion 121 is inclined, and the outer diameter of the plug portion 121 gradually decreases in the direction away from the extension portion 122 to facilitate the matching of the buckle cylinder 130, so that the buckle cylinder 130 can be tightly attached to the plug portion 121 in the contracted state to support the buckle cylinder 130.

[0060] It is worth noting that the inclined setting can be understood as the side wall of the plug part 121 and the end face of its push buckle tube 130 being set at an obtuse angle, and the preferred angle is 150° to 170°, and the specific degrees can be 150°, 155°, 160°, 165° and 170°, etc.

[0061] refer to Figure 1-Figure 6 In order to improve the plug-in performance, the buckle tube 130 and the plug pin 120 can, on the one hand, smoothly enter the second accommodating cavity 1102 from the first accommodating cavity 1101, and on the other hand, can play a limiting role when the buckle tube 130 and the plug pin 120 are separated from the second cavity. A limiting groove 1221 can be provided at one end of the extension part 122 close to the plug part 121, and the limiting groove 1221 cooperates with the buckle tube 130.

[0062] Specifically, the limiting groove 1221 is formed by the outer wall of the extension portion 122 being recessed radially inward; in this embodiment, the bottom wall of the limiting groove 1221 is a plane; in other embodiments of the utility model, the bottom wall of the limiting groove 1221 can also be an arc surface, a curved surface, etc., and its specific shape is not limited.

[0063] refer to Figure 6 The buckle tube 130 includes a buckle tube body 131 and an elastic flap 132 connected to each other. The buckle tube body 131 is used to abut against the end surface of the latch 120, and the elastic flap 132 is sleeved on the outer wall of the latch 120 and is used to expand or contract under the action of external force.

[0064] Specifically, the buckle barrel body 131 is pressed against the end surface of the plug portion 121, and the elastic petal 132 is sleeved on the side walls of the plug portion 121 and the extension portion 122. The elastic petal 132 can be a multi-petal structure separated from each other so as to expand and contract when receiving external force.

[0065] It is worth noting that an angle α is formed between the elastic petal 132 and the buckle tube body 131, 90°≤α≤130°, and the specific degree can be 90°, 100°, 105°, 110°, 115°, 120°, 125° and 130°, etc.

[0066] Furthermore, the buckle tube body 131 includes a main body portion 1311 and a connecting portion 1312 connected to each other. The connecting portion 1312 is disposed at the edge of the main body portion 1311 , and one end of the elastic flap 132 is disposed at the connecting portion 1312 and spaced apart from the main body portion 1311 .

[0067] In addition, the buckle barrel 130 further includes a limiting platform 133, which is connected to one end of the elastic flap 132 away from the buckle barrel body 131, and the limiting platform 133 is simultaneously supported by the clamping platform 112 and the latch 120. Specifically, the limiting platform 133 cooperates with the limiting groove 1221 to ensure the relative position stability of the buckle barrel 130 and the latch 120, and prevent the two from being easily separated from each other during the movement process.

[0068] In addition, an angle β is formed between the limiting platform 133 and the side wall of the elastic petal 132, 75°≤β≤90°, and the specific angle may be 75°, 80°, 85°, 90°, etc.

[0069] refer to Figure 8-Figure 10In the assembly process, in order to prevent the buckle tube 130 from being stuck in the receiving hole, the buckle tube 130 can be first sleeved on the latch 120, and then the latch 120 can be pushed so that the buckle tube 130 and the latch 120 enter the receiving hole 111 simultaneously. During the movement, the clamping platform 112 will press against the buckle tube 130, so that the buckle tube 130 shrinks until the buckle tube 130 passes through the clamping platform 112. When the latch 120 is subjected to a force moving away from the buckle tube 130, the limiting platform 133 will clamp the latch 120, and the clamping platform 112 can limit the limiting platform 133, thereby preventing the latch 120 from moving out of the receiving hole 111.

[0070] It is worth noting that an embodiment of the present utility model further provides a prefabricated pile, which includes a plurality of main bars and a self-locking pin joint 100 , wherein the plurality of main bars are respectively connected to a joint seat 110 or a sleeve 140 .

[0071] In summary, the self-locking pin connector 100 and the prefabricated pile disclosed in the embodiments of the present utility model have at least the following advantages:

[0072] (1) The self-locking latch connector 100 has fewer parts than the prior art, which reduces manufacturing costs and improves installation convenience.

[0073] (2) The self-locking pin connector 100 forms a card platform 112 between the first accommodating cavity 1101 and the second accommodating cavity 1102, and forms a first inclined surface 1121 and a second inclined surface 1122 on both sides of the card platform 112, respectively. The first inclined surface 1121 blocks the buckle cylinder 130 so that the buckle cylinder 130 is stuck in the connector seat 110, and the second inclined surface 1122 is used to support and position the buckle cylinder 130.

[0074] (3) The self-locking plug connector 100 can further improve the plug-in matching stability of the plug pin 120, the sleeve 140 and the connector seat 110 by making the plug pin 120 cooperate with the receiving hole 111 when the sleeve 140 is abutted against the connector seat 110.

[0075] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A self-locking latch connector, characterized in that: include: A latch (120), a connector seat (110), a buckle tube (130) and a sleeve (140); The connector seat (110) is provided with a receiving hole (111), a clamping platform (112) is protruding from the side wall of the receiving hole (111), the buckle tube (130) is sleeved on the head end of the latch (120), the latch (120) and the buckle tube (130) are both accommodated in the receiving hole (111), the end of the latch (120) is connected to the sleeve (140), the latch (120) is used to push the buckle tube (130) through the clamping platform (112) under the action of external force, and the clamping platform (112) is used to resist the buckle tube (130) to move in the reverse direction.

2. The self-locking latch connector according to claim 1, characterized in that: The buckle tube (130) comprises a buckle tube body (131) and an elastic flap (132) connected to each other. An angle α is formed between the elastic flap (132) and the end surface of the buckle tube body (131), and the angle is 90°≤α≤130°. The elastic flap (132) is sleeved on the outer side wall of the latch (120) and is used to expand or contract under the action of an external force.

3. The self-locking latch connector according to claim 2, characterized in that: The buckle tube (130) further comprises a limiting platform (133), wherein the limiting platform (133) is connected to one end of the elastic flap (132) away from the buckle tube body (131), and the limiting platform (133) is simultaneously abutted against the clamping platform (112) and the latch (120).

4. The self-locking latch connector according to claim 3, characterized in that: An included angle β is formed between the limiting platform (133) and the side wall of the elastic petal (132), and the angle is 75°≤β≤90°.

5. The self-locking latch connector according to claim 2, characterized in that: The buckle tube body (131) comprises a main body portion (1311) and a connecting portion (1312) connected to each other, wherein the connecting portion (1312) is arranged at the edge of the main body portion (1311), and one end of the elastic flap (132) is arranged at the connecting portion (1312) and is spaced apart from the main body portion (1311).

6. The self-locking latch connector according to claim 1, characterized in that: The accommodating hole (111) comprises a first accommodating cavity (1101) and a second accommodating cavity (1102) which are connected to each other. The first accommodating cavity (1101) and the second accommodating cavity (1102) are respectively located on two sides of the card platform (112). The latch (120) is used to push the buckle tube (130) from the first accommodating cavity (1101) through the card platform (112) to the second accommodating cavity (1102) under the action of an external force. The buckle tube (130) is abutted against the card platform (112).

7. The self-locking latch connector according to claim 6, characterized in that: A first inclined surface (1121) is provided on one side of the card table (112) close to the first accommodating cavity (1101), and a third inclined surface (1301) matching with the first inclined surface (1121) is provided on the buckle cylinder (130); And / or, a second inclined surface (1122) is provided on a side of the card platform (112) close to the second accommodating cavity (1102).

8. The self-locking latch connector according to claim 1, characterized in that: The latch (120) comprises a plug portion (121), an extension portion (122) and a positioning portion (123) which are connected in sequence; the buckle tube (130) is sleeved on the plug portion (121); and the sleeve (140) is fixedly connected to the positioning portion (123).

9. The self-locking latch connector according to claim 8, characterized in that: The side wall of the plug portion (121) is arranged obliquely, and the outer diameter of the plug portion (121) gradually decreases in a direction away from the extension portion (122); a limiting groove (1221) is provided at one end of the extension portion (122) close to the plug portion (121), and the limiting groove (1221) cooperates with the buckle tube (130).

10. A prefabricated pile, characterized in that: It comprises a plurality of main ribs and the self-locking pin connector according to any one of claims 1 to 9, wherein the main ribs are connected to the connector seat (110) or the sleeve (140).

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