Precast pile automatic locking connecting device and connecting structure

Abstract

The utility model discloses a precast pile automatic locking and connecting device and a connecting structure. The connecting device comprises a connecting sleeve of a connecting assembly A and a connecting seat of a connecting assembly B, first-layer locking teeth are arranged on the outer side portion of a stand column in the connecting sleeve, a clamping groove is formed in the inner side portion of the connecting sleeve, a column cavity is formed in the connecting seat, a first-layer clamping piece capable of sliding horizontally is arranged on the connecting seat, a second-layer clamping piece capable of sliding horizontally is arranged on the connecting seat, and a spring is arranged on the connecting seat. And the first-layer locking teeth, the first-layer clamping piece and the second-layer clamping piece are all provided with extrusion matching surfaces. The connecting structure comprises a pile body A and a pile body B, and further comprises the connecting device. The method has the beneficial effects that construction is fast, welding or bolt fastening is not needed, and the construction time is remarkably shortened; a self-locking mechanism ensures firm connection, and personal errors are reduced; adaptability is high, and the method is suitable for various geological conditions and construction environments; the structure is simple, and the later maintenance cost is low; the anti-seismic property is good, the performance is stable under dynamic load, and the device is suitable for earthquake-prone areas.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of precast piles, and particularly relates to a precast pile automatic locking connecting device and a connecting structure. BACKGROUND

[0002] The precast piles are widely used, including but not limited to residential buildings, commercial buildings, highway bridges and other construction projects. They not only serve as the load-bearing structure of buildings, but also help to improve the stability and bearing capacity of the foundation. In urban construction, due to the space limitation of the construction site and the environmental protection requirements, the precast piles are favored because of their fast construction speed, low noise and less pollution. However, the traditional precast piles often use flange connection, welding connection and threaded sleeve connection methods for pile connection. The traditional precast pile connection method has certain shortcomings in terms of construction difficulty, precision requirement, corrosion resistance, construction space, maintenance requirement and seismic performance. CONTENT OF THE UTILITY MODEL

[0003] The application aims to provide a precast pile automatic locking connecting device and a connecting structure. The spring and the clamping piece are self-locked by extrusion with the locking teeth, without the need for additional fasteners or welding. The connecting structure is fast to construct, reliable in quality and good in seismic performance, and can be applied to high-rise buildings, bridge engineering that needs to bear large dynamic load, offshore platforms and earthquake-prone areas, thereby solving the problem of inconvenient connection of traditional precast piles.

[0004] The application achieves the above-mentioned purpose through the following technical scheme.

[0005] The precast pile automatic locking connecting device comprises a connecting assembly A and a connecting assembly B. The connecting assembly A comprises a connecting sleeve, and a stand is arranged in the connecting sleeve. The outer side of the stand is provided with a first layer of locking teeth, and the inner side of the connecting sleeve is provided with a clamping groove. The connecting assembly B comprises a connecting seat, and a column cavity is arranged on the connecting seat. The connecting seat is provided with a first layer of clamping pieces that horizontally slide between a free position and a clamping groove locking position. The connecting seat is provided with a second layer of clamping pieces that horizontally slide between a free position, a limit position and a first tooth locking position. The connecting seat is provided with a spring that supports the second layer of clamping pieces inwardly. The first layer of locking teeth and the first layer of clamping pieces are arranged at the inner end of the column cavity, and the second layer of clamping pieces are arranged at the inner end of the column cavity, and each is provided with an extrusion matching surface.

[0006] Further, the connecting sleeve has a door-shaped cross section, and the connecting seat has a convex-shaped cross section.

[0007] Further, the connecting sleeve and the connecting seat are made of corrosion-resistant materials.

[0008] Further, the stand is arranged at the center of the connecting sleeve, and the column cavity is arranged at the center of the connecting seat.

[0009] Further, the two sides of the stand are provided with first layer lock teeth, and the two sides of the connecting seat are provided with first layer clamping pieces and second layer clamping pieces.

[0010] Further, the first layer lock teeth are right-angled triangular prism structures, the inner ends of the first layer clamping pieces and the inner ends of the second layer clamping pieces are right-angled trapezoidal column structures, and the oblique edges of the right-angled triangular prisms and the inclined surfaces of the right-angled trapezoidal columns are extrusion matching surfaces.

[0011] Further, the stand is provided with second layer lock teeth.

[0012] Further, the two sides of the stand are provided with second layer lock teeth.

[0013] Further, the second layer lock teeth are right-angled triangular prism structures, and the oblique edges of the right-angled triangular prisms are extrusion matching surfaces.

[0014] The automatic locking connection structure of the precast pile comprises a pile body A and a pile body B, and further comprises the automatic locking connection device of the precast pile, the pile body A is connected with the connecting sleeve of the connecting assembly A, the pile body B is connected with the connecting seat of the connecting assembly B, the connecting sleeve is sleeved on the connecting seat, the stand extends into the column cavity, the first layer lock teeth and the first layer clamping pieces interact through the extrusion matching surfaces, the first layer clamping pieces are located in the clamping groove locking position and the outer ends are clamped in the clamping groove, and the second layer clamping pieces are located in the first tooth locking position and the inner ends are clamped with the first layer lock teeth.

[0015] Further, a sealing washer is arranged between the connecting sleeve and the connecting seat.

[0016] The beneficial effects of the present application are as follows:

[0017] 1. Quick construction: No welding or bolt fastening is needed, significantly shortening the construction time.

[0018] 2. Reliable quality: The self-locking mechanism ensures firm connection and reduces human errors.

[0019] 3. Strong adaptability: Suitable for various geological conditions and construction environments.

[0020] 4. Simple maintenance: The structure is simple, and the maintenance cost is low in the later period.

[0021] 5. Good anti-seismic performance: Stable performance under dynamic load, suitable for areas with frequent earthquakes.

[0022] The foregoing main scheme of the present application and each further selected scheme thereof can be freely combined to form multiple schemes, all of which are the schemes that can be adopted and claimed by the present application; and the present application can also be freely combined between (each non-conflict selection) selections and between other selections. Those skilled in the art can understand that there are many combinations according to the existing technology and common knowledge after understanding the present scheme, and all of them are the technical schemes to be protected by the present application, which will not be listed exhaustively. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the structural schematic diagram of the connecting device of the application.

[0024] Figure 2 is the structural schematic diagram of the connecting structure of the application.

[0025] In the figure: 10-pile body A, 20-pile body B, 30-connecting assembly A, 40-connecting assembly B, 50-sealing washer; 1-connecting sleeve, 2-connecting seat, 3-stand column, 4-first layer locking tooth, 5-second layer locking tooth, 6-clamping groove, 7-column cavity, 8-first layer clamping piece, 9-second layer clamping piece, 11-spring. DETAILED DESCRIPTION

[0026] The application will be further described below in combination with specific embodiments and the accompanying drawings.

[0027] Embodiment 1

[0028] Reference Figure 1 and Figure 2 As shown in the figure, an automatic locking connecting device for prefabricated piles comprises connecting assembly A 30 and connecting assembly B 40. Connecting assembly A 30 comprises connecting sleeve 1, stand column 3, first layer locking tooth 4, second layer locking tooth 5 and clamping groove 6, and connecting assembly B comprises connecting seat 2, column cavity 7, first layer clamping piece 8, second layer clamping piece 9 and spring 11.

[0029] Connecting sleeve 1 can be sleeved on connecting seat 2 to form the assembly matching of the structure and to close the internal structure. Connecting sleeve 1 is internally provided with stand column 3, which serves as the placement basis of the locking tooth. The outer side of stand column 3 is provided with first layer locking tooth 4, which is used to extrude the clamping piece and realize the entry between the clamping pieces, and the first layer locking tooth cooperates with the clamping piece to realize the first level of locking. The inner side of connecting sleeve 1 is provided with clamping groove 6, which cooperates with the clamping piece to realize the second level of locking.

[0030] Connecting seat 2 is provided with column cavity 7, and stand column 3 is inserted into column cavity 7 during the connection. Connecting seat 2 is provided with first layer clamping piece 8 that horizontally slides between the free position and the clamping groove locking position. The outer end of first layer clamping piece 8 in the free position does not protrude from connecting seat 2, and the outer end of first layer clamping piece 8 in the clamping groove locking position protrudes from connecting seat 2 to limit the clamping groove 6.

[0031] The connecting seat 2 is provided with a secondary locking member 9 that slides horizontally between the free position, the extreme position and the first tooth locking position. The connecting seat 2 is provided with a spring 11 that supports the secondary locking member 9 inward. The secondary locking member 9 in the free position is not pressed by the spring 11. The secondary locking member 9 in the extreme position overcomes the pressure of the spring 11 and enters the connecting seat 2 to the extreme position, so that the first locking tooth 4 can enter between the first locking members 8 through the secondary locking member 9. The secondary locking member 9 in the first tooth locking position rebounds under the pressure of the spring 11 and is blocked by the column 3 and cannot fully return to the free position. At the same time, the secondary locking member 9 locks and limits the first locking tooth 4.

[0032] The first-layer locking tooth 4 and the first-layer clamping piece 8 are located at the inner end of the column cavity 7, and the second-layer clamping piece 9 is located at the inner end of the column cavity 7. Both are provided with a pressing mating surface. During the process of the column 3 entering the column cavity 7, the pressing mating surface of the first-layer locking tooth 4 presses the pressing mating surfaces of the two layers of clamping pieces, thereby pushing the clamping pieces on both sides to slide and move.

[0033] The column 3 is provided with a secondary locking tooth 5, which is located behind the primary locking tooth 4. The primary locking member 8 is located behind the secondary locking member 9. The secondary locking tooth 5 is provided with a pressing mating surface. The pressing mating surface of the secondary locking tooth 5 matches the pressing mating surface of the secondary locking member 9 to fill the gap between the secondary locking member 9 and the column 3.

[0034] Both the connecting sleeve 1 and the connecting seat 2 are made of corrosion-resistant material to prevent corrosion at the connection point from affecting the connection effect. The connecting sleeve 1 has a U-shaped cross-section, which provides a large connection surface between the connecting sleeve 1 and the pile body. The column 3 is located at the center of the bottom of the groove of the connecting sleeve 1. The connecting seat 2 has a convex cross-section, which also provides a large connection surface between the connecting seat 2 and the pile body. The column cavity 7 is located at the center of the head of the connecting seat 2.

[0035] Both sides of the column 3 are provided with first-layer locking teeth 4 and second-layer locking teeth 5, and both sides of the connecting seat 2 are provided with first-layer clamps 8 and second-layer clamps 9. The arrangement on both sides ensures the symmetry of the connecting clamps, thereby forming a stable and reliable connection structure.

[0036] The column 3 is a rectangular prism structure with a square cross-section. The first-layer locking tooth 4 is a right-angled triangular prism structure, and the second-layer locking tooth 5 is a right-angled triangular prism structure. One right-angled side of the right-angled triangular prism structure is attached to the outer side plate of the column 3, and the other right-angled side of the right-angled triangular prism is horizontally arranged. The outward (and forward) hypotenuse of the right-angled triangular prism is a 45° extrusion mating surface. The width of the locking tooth is equal to the width of the column, the depth of the groove is equal to half the width of the column, and the length is equal to the width of the column.

[0037] The inner ends of the first-layer clamp 8 and the second-layer clamp 9 are right-angled trapezoidal column structures. The two bases of the right-angled trapezoidal column structure are arranged horizontally. The right-angled surface of the right-angled trapezoidal column structure forms a clamping relationship with the connecting seat 2, forming the limit position of the clamp sliding. The inward (and forward) inclined surface of the right-angled trapezoidal column is a 45° extrusion mating surface.

[0038] The first-layer clamp 8 adopts a rectangular steel component with a trapezoidal column block. The trapezoidal column block is close to the pile core side. The rectangular steel component and the trapezoidal column block have the same width, which is equal to the width of the central connecting column. The first-layer clamp 8 can move freely left and right under the action of external force. The trapezoidal column block and the connecting seat 2 are engaged in limit position locking cooperation.

[0039] The secondary clamp 9 uses a cylindrical steel component with trapezoidal column locking teeth. The cylinder has a smaller diameter near the outer side of the pile and a larger diameter near the pile core. A high-strength spring is fitted on the cylinder, with the larger cylinder diameter slightly larger than the spring diameter. The clamp can move left and right along a pre-reserved groove within the connecting seat. The diameter of the groove decreases near the outer side of the pile, becoming smaller than the spring diameter, thus limiting the spring's range of motion. The trapezoidal column locking teeth engage with the connecting seat 2 at extreme positions.

[0040] The workflow of this application is as follows: After the lower pile body is installed, the upper pile body is aligned with the lower pile body and kept perpendicular to the pile body. Due to the self-weight of the upper pile body, the column of the connecting sleeve is pressed downward. After the secondary clamp is squeezed open by the first locking tooth, due to the action of the high-strength spring, the secondary clamp rebounds and locks with the first locking tooth. After the first clamp is squeezed outward by the first locking tooth, the first clamp will enter the reserved slot of the connecting sleeve and lock, so that the upper and lower pile bodies are connected to form a whole.

[0041] Example 2

[0042] An automatic locking connection structure for precast piles includes pile body A 10 and pile body B 20, and also includes the automatic locking connection device for precast piles of Embodiment 1. The connection device is suitable for the extension of precast piles. Taking the connection of precast square piles as an example, the upper and lower pile bodies are connected by self-locking buckles to form a whole.

[0043] If one of pile body A 10 and pile body B 20 is the upper pile body, then the other is the lower pile body. Pile body A 10 is connected to the connecting sleeve 1 of connecting component A 30, and pile body B 20 is connected to the connecting seat 2 of connecting component B 40.

[0044] The connecting sleeve 1 is fitted onto the connecting seat 2, the column 3 extends into the column cavity 7, the first layer locking tooth 4 and the first layer clamping member 8 interact through the extrusion mating surface, the first layer clamping member 8 is located in the locking position of the slot and its outer end is clamped in the slot 6, and the second layer clamping member 9 is located in the locking position of the first tooth and its inner end is clamped in the first layer locking tooth 4.

[0045] A sealing gasket 50 is provided between the connecting sleeve 1 and the connecting seat 2. The sealing gasket can ensure the sealing of the joint and increase the service life of the connecting device.

[0046] The connecting device can be produced using 3D printing to ensure processing accuracy. A mechanical self-locking mechanism enables rapid and reliable connection of pile sections. High-strength springs and clamps are installed at the joint, and the pile's own weight compresses the joint to achieve bidirectional interlocking, connecting the two pile sections into a single unit.

[0047] The foregoing basic examples and their further alternative examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed in this application. In the scheme of this application, each alternative example can be arbitrarily combined with any other basic example and alternative example.

[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic locking connection device for precast piles, comprising connection component A (30) and connection component B (40), characterized in that: The connecting component A (30) includes a connecting sleeve (1), a column (3) is provided inside the connecting sleeve (1), a first-layer locking tooth (4) is provided on the outer side of the column (3), and a slot (6) is provided on the inner side of the connecting sleeve (1). The connecting component B (40) includes a connecting seat (2), a column cavity (7) is provided on the connecting seat (2), a first-layer locking member (8) is provided on the connecting seat (2) that slides horizontally between the free position and the slot locking position, a second-layer locking member (9) is provided on the connecting seat (2) that slides horizontally between the free position, the limit position and the first tooth locking position, and a spring (11) is provided on the connecting seat (2) to support the second-layer locking member (9) inward. The first-layer locking tooth (4), the first-layer locking member (8) located at the inner end of the column cavity (7) and the second-layer locking member (9) located at the inner end of the column cavity (7) are all provided with a pressing mating surface.

2. The automatic locking connection device for precast piles according to claim 1, characterized in that: The connecting sleeve (1) has a door-shaped cross section, and the connecting seat (2) has a convex cross section.

3. The automatic locking connection device for precast piles according to claim 1 or 2, characterized in that: Both the connecting sleeve (1) and the connecting seat (2) are made of corrosion-resistant material.

4. The automatic locking connection device for precast piles according to claim 1, characterized in that: The column (3) is located at the center of the connecting sleeve (1), and the column cavity (7) is located at the center of the connecting seat (2).

5. The automatic locking connection device for precast piles according to claim 1 or 4, characterized in that: The column (3) is provided with first-layer locking teeth (4) on both sides, and the connecting seat (2) is provided with first-layer locking parts (8) and second-layer locking parts (9) on both sides.

6. The automatic locking connection device for precast piles according to claim 1, characterized in that: The first-layer locking tooth (4) is a right-angled triangular prism structure, and the inner end of the first-layer clamp (8) and the inner end of the second-layer clamp (9) are right-angled trapezoidal prism structures. The hypotenuse of the right-angled triangular prism and the inclined surface of the right-angled trapezoidal prism are both extrusion mating surfaces.

7. The automatic locking connection device for precast piles according to claim 1, characterized in that: The column (3) is provided with a secondary locking tooth (5), and the secondary locking tooth (5) is provided with a pressing mating surface.

8. The automatic locking connection device for precast piles according to claim 7, characterized in that: The column (3) is provided with secondary locking teeth (5) on both sides; the secondary locking teeth (5) are right-angled triangular prisms, and the hypotenuse of the right-angled triangular prism is the extrusion mating surface.

9. An automatic locking connection structure for precast piles, comprising pile body A (10) and pile body B (20), characterized in that: It also includes the precast pile automatic locking connection device according to any one of claims 1 to 8, wherein the pile body A (10) is connected to the connecting sleeve (1) of the connecting component A (30), the pile body B (20) is connected to the connecting seat (2) of the connecting component B (40), the connecting sleeve (1) is sleeved on the connecting seat (2), the column (3) extends into the column cavity (7), the first layer locking tooth (4) and the first layer clamp (8) interact through the extrusion mating surface, the first layer clamp (8) is located in the locking position of the slot and the outer end is clamped in the slot (6), and the second layer clamp (9) is located in the locking position of the first tooth and the inner end is clamped in the first layer locking tooth (4).

10. The precast pile automatic locking connection structure according to claim 9, characterized in that: A sealing gasket (50) is provided between the connecting sleeve (1) and the connecting seat (2).

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