Mechanical connection joint for precast concrete square pile
By designing a locking block, alignment block, and locking assembly, the mechanical connection joint of concrete square piles is quickly aligned and stably locked, solving the problem of long welding time in existing technologies and improving splicing efficiency and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA FIRST METALLURGICAL GROUP
- Filing Date
- 2023-11-08
- Publication Date
- 2026-07-07
Smart Images
Figure CN117418530B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of concrete square pile connection joint technology, and in particular to a mechanical connection joint for precast concrete square piles. Background Technology
[0002] Concrete square pile connection joints refer to the connection structures that fix square piles made of concrete. Square piles are generally used for the support of large buildings. Connection joints are mainly divided into mechanical connection joints and building-integrated connection joints. Based on the recycling value and construction cost, mechanical connection joints are more widely used.
[0003] The existing mechanical connection joint for concrete square piles mainly includes an upper joint, a lower joint, a pre-embedded column, and pre-embedded reinforcing bars. In use, the upper joint and the lower joint are first fixed to the two square piles by the pre-embedded column and the pre-embedded reinforcing bars respectively. Then, the upper joint and the lower joint with the fixed square piles are aligned, and then the upper joint and the lower joint are fixed by electric welding, thereby fixing the two square piles together.
[0004] However, in actual use, welding the upper and lower joints takes a lot of time, and the welding process requires constantly changing the welding position, which requires high technical skills. This increases the time and difficulty of square pile splicing, delays work, and reduces construction efficiency. Summary of the Invention
[0005] To address the issues of long splicing time and low efficiency in square pile assembly, this application provides a mechanical connection joint for precast concrete square piles.
[0006] The mechanical connection joint for precast concrete square piles provided in this application adopts the following technical solution:
[0007] A mechanical connection joint for precast concrete square piles, comprising:
[0008] The upper connector has a locking block and a cylindrical alignment block installed at its bottom, and the locking block has a insertion groove on its side wall.
[0009] The lower connector has a slot for inserting the card block and an alignment slot for inserting the alignment block on its top. The inner wall of the card slot has a through hole corresponding to the insertion slot.
[0010] Alignment device, located between alignment block and alignment groove, and used to adjustably install alignment block in alignment groove, and capable of pre-connecting upper connector to lower connector;
[0011] The locking assembly is equipped with a plug rod that passes through a plug hole and is inserted into a plug slot, thereby locking the block in the slot.
[0012] By adopting the above technical solution, the locking block on the upper connector is aligned with the locking groove on the lower connector, and then the locking block is inserted into the locking groove. At this time, the alignment block on the upper connector is inserted into the alignment groove of the lower connector. Under the action of the alignment device, the alignment block is pre-connected and adjustablely installed in the alignment groove, so that when the relative position between the upper and lower connectors is adjusted, the insertion groove on the locking block can be quickly adjusted to align with the insertion hole on the inner wall of the locking groove. At this time, the insertion rod in the locking assembly can be passed through the insertion hole and inserted into the insertion groove, thereby achieving the purpose of quickly connecting the upper connector to the lower connector, shortening the splicing time between the upper and lower connectors, and improving the splicing efficiency between the two square piles.
[0013] Optionally, the alignment block is cylindrical, and the alignment groove is inserted and adapted to fit the alignment block. The alignment device includes...
[0014] The elastic telescopic rod is designed to extend and retract along the length of the alignment block, with one end fixed at the center of the bottom of the alignment block.
[0015] The sliding cylinder is located on one side of the elastic telescopic rod and is slidably installed at the bottom of the alignment block along the length of the alignment block;
[0016] The connecting frame is fixedly installed at the bottom of the slide cylinder and connected to the end of the elastic telescopic rod away from the alignment block. The side of the frame facing away from the elastic telescopic rod is open.
[0017] The round rod is fixedly installed inside the connecting frame and is perpendicular to the slide cylinder;
[0018] The rotating plate is rotatably mounted on the round rod on one side, and extends from the opening of the connecting frame to the outside of the connecting frame on the other side.
[0019] A torsion spring is fitted onto a round rod, with one end connected to the round rod and the other end connected to a rotating plate.
[0020] The stop block is fixedly installed on the inner wall of the alignment slot;
[0021] When the torsion spring is in its natural state, the angle between the rotating plate and the slide cylinder is no greater than 90°, and the distance from the surface of the rotating plate away from the round rod to the center line of the alignment block is greater than the distance from the surface of the stop block near the center line of the alignment groove to the center line of the alignment groove.
[0022] By adopting the above technical solution, as the alignment block on the upper connector is inserted into the alignment groove on the lower connector, the stop block in the alignment groove pushes the rotating plate to rotate around the circular rod towards the slide cylinder. At this time, the torsion spring deforms, generating elastic force, and the force between the stop block and the rotating plate is insufficient to push the elastic telescopic rod to retract. As the alignment block continues to penetrate deeper, it drives the rotating plate to move below the stop block. Under the elastic force of the torsion spring, the rotating plate is driven to rotate around the circular rod away from the slide cylinder. At this time, the top of the rotating plate abuts against the bottom of the stop plate, and the elastic telescopic rod is not compressed. The alignment block is pre-connected in the alignment groove by the locking action of the rotating plate and the stop plate, so that the insertion groove on the locking block is exactly at the same height as the insertion hole in the slot. At this time, it is only necessary to rotate the upper connector to make the alignment block rotate slightly within the alignment groove to quickly align the insertion groove on the locking block with the insertion hole in the slot.
[0023] Optionally, multiple slide cylinders are provided, which are evenly distributed around the periphery of the elastic telescopic rod. Multiple stops are also provided, with each stop corresponding to one of the multiple slide cylinders.
[0024] By adopting the above technical solution, multiple sliding cylinders are evenly distributed around the center line of the alignment block, so that the upper connector can be stably pre-connected to the lower connector under the snapping action of multiple evenly distributed rotating plates and stops.
[0025] Optionally, a pressure plate is fixed to the end of the elastic telescopic rod. The pressure plate is located on the side of the connecting frame away from the slide cylinder. A connecting groove communicating with the alignment groove is opened on the surface of the lower connector side. A driving component for driving the pressure plate to move the connecting frame away from the alignment block is provided in the connecting groove.
[0026] By adopting the above technical solution, if there is an error in the installation height of the stop block in the mating groove, causing the rotating plate to not fully move to below the stop block after the alignment block has been fully inserted into the alignment groove, the driving component can drive the pressure plate to extend the elastic telescopic rod, so that the rotating plate moves to below the stop block and rotates under the drive of the torsion spring until it abuts against the stop block, thereby realizing the locking effect between the rotating plate and the stop block.
[0027] Optionally, a Z-shaped sliding groove is provided on the inner side wall of the connecting groove, and the driving assembly includes a slider that slides in the sliding groove, an operating plate connected to the slider, and a pressure block fixed on the operating plate for pressing down the pressure plate.
[0028] By adopting the above technical solution, when it is necessary to drive the elastic telescopic rod to extend, it is only necessary to drive the slider to move to the vertical part of the Z-shaped slide groove through the operating plate. At this time, the pressure block extends into the alignment groove and is located above the pressure plate. Then, the slider is driven to move downward in the slide groove through the operating plate, so that the pressure block drives the pressure plate to move downward. The pressure plate drives the elastic telescopic rod to extend. The elastic telescopic rod drives the rotating plate to move below the stop block through the connecting frame, so that the rotating plate rotates under the action of the torsion spring until it abuts against the stop block.
[0029] Optionally, one side wall of the card block is set as an arc shape, and the insertion groove is located on the arc-shaped side wall of the card block. The arc-shaped side wall of the card block is also provided with an anti-slip groove communicating with the insertion groove. The insertion rod is inserted and adapted to the insertion groove, and the diameter of the insertion rod is smaller than the diameter of the insertion hole. The locking assembly includes an auxiliary plate fixed to the end of the insertion rod and a flexible anti-slip strip connected to the auxiliary plate at one end. A placement groove for placing the anti-slip strip is provided on the peripheral wall of the insertion rod. The side of the anti-slip strip away from the insertion rod protrudes from the placement groove. The insertion rod can drive the anti-slip strip to pass smoothly through the insertion hole and reach the insertion groove. When the insertion rod is inserted into the insertion groove, the end of the anti-slip strip away from the auxiliary plate comes out from the placement groove and inserts into the anti-slip groove.
[0030] By adopting the above technical solution, when the insertion groove on the card block is aligned with the insertion hole in the card slot, the auxiliary plate drives the insertion rod to move the anti-slip strip through the insertion hole and into the insertion groove. As the insertion rod continues to penetrate deeper into the insertion groove, the groove opening pushes the end of the anti-slip strip away from the auxiliary plate out of the placement groove, and continues to extend along the anti-slip groove on the card block and insert into the anti-slip groove. The anti-slip strip can increase the friction between the card block and the card slot, so that the card block can be stably locked in the card slot, thereby improving the stability of the connection between the upper connector and the lower connector.
[0031] Optionally, a groove for inserting the auxiliary plate is provided on the side wall of the lower connector at the insertion hole.
[0032] By adopting the above technical solution, the groove setting allows the auxiliary plate to be stably embedded in the side wall of the lower connector, effectively preventing the plug rod from coming out of the plug groove and plug hole, and allowing the locking block to be stably locked in the groove under the plug rod's insertion action, thereby improving the stability of the connection between the upper and lower connectors.
[0033] Optionally, a connecting hole is provided through the side wall of the card block, and the opening direction of the insertion groove is perpendicular to the opening direction of the connecting hole. A snap-fit hole is provided through the side wall of the lower connector, and the opening direction of the snap-fit hole is perpendicular to the opening direction of the insertion hole. When the card block is inserted into the card groove, the connecting hole and the snap-fit hole are aligned. A fixing rod can be detachably installed on the lower connector, and the fixing rod can be inserted into the snap-fit hole and the connecting hole.
[0034] By adopting the above technical solution, the fixing rod is provided with connecting holes and snap-fit holes, so that the snap-fit block is stably locked in the snap-fit groove by the fixing rod, thereby improving the stability of the connection between the upper and lower connectors.
[0035] Optionally, the insertion slot is connected to the connection hole, a positioning post is fixed at the end of the insertion rod, and a positioning hole is provided on the peripheral wall of the fixing rod for the positioning post to be inserted.
[0036] By adopting the above technical solution, after the fixing rod is inserted into the connecting hole and the snap-fit hole, the plug rod is then inserted into the snap-fit hole and the snap-fit groove, and the positioning pin at the end of the plug rod is inserted into the positioning hole, so that the plug rod and the fixing rod are stably locked and snapped onto the lower connector. Thus, the locking block can be stably locked in the slot under the plugging action of the plug rod and the fixing rod, thereby improving the stability of the connection between the upper connector and the lower connector.
[0037] Optionally, a positioning plate for quickly driving the positioning hole to the positioning post is installed on the side wall of the lower connector.
[0038] By adopting the above technical solution, the positioning plate enables the fixing rod to be quickly inserted and positioned in the connection hole and snap-fit hole. At this time, the positioning hole on the fixing rod is aligned with the insertion slot, so that the insertion rod can drive the positioning post through the insertion slot and be quickly inserted into the positioning hole.
[0039] In summary, this application includes at least one of the following beneficial technical effects:
[0040] 1. Under the action of the alignment device, the alignment block is pre-connected and adjustablely installed in the alignment groove, so that when the relative position between the upper and lower joints is adjusted, the insertion groove on the locking block can be quickly adjusted to align with the insertion hole on the inner wall of the groove. At this time, the insertion rod in the locking assembly can be passed through the insertion hole and inserted into the insertion groove, thereby achieving the purpose of quickly connecting the upper joint to the lower joint, shortening the splicing time between the upper and lower joints, and improving the splicing efficiency between the two square piles;
[0041] 2. As the alignment block on the upper connector is inserted into the alignment groove on the lower connector, the stop block in the alignment groove pushes the rotating plate to rotate around the circular rod towards the slide cylinder. At this time, the torsion spring deforms, generating elastic force, and the force between the stop block and the rotating plate is insufficient to push the elastic telescopic rod to retract. As the alignment block continues to penetrate deeper, it moves the rotating plate below the stop block. Under the elastic force of the torsion spring, the rotating plate is driven to rotate around the circular rod away from the slide cylinder. At this time, the top of the rotating plate abuts against the bottom of the stop plate, and the elastic telescopic rod is not compressed. The alignment block is pre-connected in the alignment groove by the locking action of the rotating plate and the stop plate, so that the insertion groove on the locking block is exactly the same height as the insertion hole in the slot. At this time, it is only necessary to rotate the upper connector to make the alignment block rotate slightly within the alignment groove to quickly align the insertion groove on the locking block with the insertion hole in the slot.
[0042] 3. Once the insertion slot on the card block aligns with the insertion hole in the card slot, the auxiliary plate drives the insertion rod to pass through the insertion hole and into the insertion slot. As the insertion rod continues to penetrate deeper into the insertion slot, the opening of the insertion slot pushes the end of the anti-slip strip away from the auxiliary plate out of the placement slot and continues to extend along the anti-slip groove on the card block and insert into the anti-slip groove. The anti-slip strip increases the friction between the card block and the card slot, allowing the card block to be stably locked in the card slot, thereby improving the stability of the connection between the upper and lower connectors. Attached Figure Description
[0043] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0044] Figure 1 This is a schematic diagram of the overall exploded structure of an embodiment of this application.
[0045] Figure 2 This is a schematic diagram of the upper connector and the card block in the embodiment of this application.
[0046] Figure 3 This is a schematic diagram of the structure of the lower connector and drive assembly in the embodiments of this application.
[0047] Figure 4 This is a schematic diagram of the structure of the lower connector and the stop block in the embodiment of this application.
[0048] Figure 5 This is a schematic diagram of the alignment block and alignment device in the embodiments of this application.
[0049] Figure 6 yes Figure 5An enlarged schematic diagram of part A in the middle.
[0050] Figure 7 yes Figure 4 Enlarged schematic diagram of part B.
[0051] Figure 8 This is a schematic diagram of the locking component and positioning post in the embodiments of this application.
[0052] Figure 9 This is an exploded structural diagram of the fixing rod and positioning plate in the embodiments of this application.
[0053] Reference numerals: 1. Upper connector; 2. Locking block; 3. Alignment block; 4. Insertion slot; 5. Lower connector; 6. Locking slot; 7. Drive assembly; 71. Slider; 72. Operation panel; 73. Pressure block; 8. Alignment device; 81. Elastic telescopic rod; 82. Slide cylinder; 83. Connecting frame; 84. Round rod; 85. Rotating plate; 86. Torsion spring; 87. Stop block; 88. Slide rod; 9. Locking assembly; 91. Insertion rod; 92. Auxiliary plate; 93. Anti-slip strip; 10. Insertion hole; 11. Pressure plate ; 12. Connecting groove; 13. Alignment groove; 14. Sliding groove; 15. Anti-slip groove; 16. Placement groove; 17. Embedded groove; 18. Connecting hole; 19. Snap-fit hole; 20. Fixing rod; 21. Positioning post; 22. Positioning hole; 23. Positioning plate; 24. Boss; 25. Groove; 26. Connector; 27. Support rod; 28. Mounting groove; 29. End cap; 30. Short rod; 31. Insertion hole; 32. Insertion block; 33. Limiting strip; 34. Limiting groove; 35. Notch; 36. Protrusion. Detailed Implementation
[0054] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.
[0055] This application discloses a mechanical connection joint for precast concrete square piles. (Refer to...) Figure 1 , Figure 2 and Figure 3A mechanical connection joint for precast concrete square piles includes an upper joint 1 and a lower joint 5. The upper joint 1 is riveted with a boss 24, and two locking blocks 2 are installed at the bottom of the boss 24. Each locking block 2 includes a rectangular block and a cylindrical block. The cylindrical block is integrally formed and located at the front end of the rectangular block, and the distance from the bottom surface of the cylindrical block to the boss 24 is greater than the distance from the bottom surface of the rectangular block to the boss 24. An insertion groove 4 is formed on the peripheral wall of the cylindrical block on the side away from the rectangular block. The top of the lower joint 5 has a groove 25 for accommodating the boss 24. When the boss 24 is inserted into the groove 25, the shear resistance between the upper joint 1 and the lower joint 5 is increased, thereby improving the stability of the connection between the upper joint 1 and the lower joint 5. The inner bottom wall of the groove 25 is provided with two slots 6 for the two locking blocks 2 to be inserted into respectively. The slots 6 include a rectangular slot and a semi-circular slot. The semi-circular slot is connected to the rectangular slot and is located at the front end of the rectangular slot. The depth of the rectangular slot is less than the depth of the semi-circular slot. The inner wall of the semi-circular slot away from the rectangular slot is provided with a insertion hole 10 corresponding to the insertion slot 4 through the side wall of the lower connector 5.
[0056] To ensure that the insertion slot 4 can be quickly and stably aligned with the insertion hole 10 during the process of fixing the upper connector 1 and the lower connector 5, refer to Figure 1 , Figure 3 and Figure 5 A cylindrical alignment block 3 is fixedly connected to the center of the bottom of the boss 24, and two locking blocks 2 are symmetrically distributed on both sides of the alignment block 3. An alignment groove 13 for inserting the alignment block 3 is opened at the center of the bottom wall of the groove 25, and two locking slots 6 are symmetrically distributed on both sides of the alignment groove 13. An alignment device 8 for pre-connecting the upper connector 1 and the lower connector 5 is provided between the alignment block 3 and the alignment groove 13. In order to allow the locking block 2 to be quickly inserted into the locking slot 6, the locking slot 6 is slightly larger than the locking block 2, so that the alignment block 3 can rotate slightly in the alignment groove 13, thereby facilitating the rotation of the upper connector 1 on the lower connector 5, so that the insertion groove 4 can be quickly aligned with the insertion hole 10.
[0057] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6The alignment device 8 includes an elastic telescopic rod 81, multiple sliding rods 88, multiple sliding cylinders 82, multiple connecting frames 83, multiple round rods 84, multiple rotating plates 85, multiple torsion springs 86, and multiple stop blocks 87. In this embodiment, four of each of the following are provided, and they correspond one-to-one: sliding rod 88, sliding cylinder 82, connecting frame 83, round rod 84, rotating plate 85, torsion spring 86, and stop block 87. One end of the elastic telescopic rod 81 is fixed to the center of the bottom of the alignment block 3 and extends and retracts along the length of the alignment block 3; the other end is fixedly installed with a connector 26, and four support rods 27 are evenly installed on the periphery of the connector 26. Four mounting slots 28 are opened at the bottom of the alignment block 3, and the four mounting slots 28 are evenly distributed around the elastic telescopic rod 81. The four sliding rods 88 are distributed and fixedly installed in the four mounting slots 28. The slide cylinder 82 is slidably fitted onto the slide rod 88, and the connecting frame 83 is fixedly connected to the bottom of the slide cylinder 82. Four support rods 27 are fixedly connected to the four connecting frames 83 respectively, and the side of the connecting frame 83 away from the support rods 27 is open. The round rod 84 is fixedly installed inside the connecting frame 83, and the round rod 84 is perpendicular to the slide cylinder 82. One side of the rotating plate 85 is rotatably fitted onto the round rod 84, and the other side extends from the opening of the connecting frame 83 to the outside of the connecting frame 83. The torsion spring 86 is fitted onto the round rod 84, with one end fixedly connected to the round rod 84 and the other end fixedly connected to the rotating plate 85, so that the angle between the rotating plate 85 and the slide cylinder 82 is not greater than 90° when no external force is applied. In this embodiment, the initial state is 90° between the rotating plate 85 and the slide cylinder 82. Four baffles are evenly fixed on the inner wall of the alignment groove 13. Under no external force, the distance from the surface of the rotating plate 85 away from the round rod 84 to the center line of the alignment block 3 is greater than the distance from the surface of the baffle 87 near the center line of the alignment groove 13 to the center line of the alignment groove 13.
[0058] During the insertion of the alignment block 3 into the alignment groove 13, the stop block 87 in the alignment groove 13 pushes the rotating plate 85 to rotate around the round rod 84 towards the slide cylinder 82. At this time, the torsion spring 86 deforms and generates elastic force. As the alignment block 3 continues to penetrate deeper, the alignment block 3 drives the rotating plate 85 to move below the stop block 87. Under the elastic force of the torsion spring 86, the rotating plate 85 is driven to rotate around the round rod 84 away from the slide cylinder 82. At this time, the top of the rotating plate 85 abuts against the bottom of the stop plate. The alignment block 3 is pre-connected in the alignment groove 13 by the locking action of the rotating plate 85 and the stop plate, so that the insertion groove 4 on the locking block 2 is exactly at the same height as the insertion hole 10 in the slot 6. At this time, it is only necessary to rotate the upper connector 1 to make the alignment block 3 rotate slightly within the alignment groove 13, so that the insertion groove 4 on the locking block 2 and the insertion hole 10 in the slot 6 can be quickly rotated to the alignment state.
[0059] Considering that if there is an error in the installation height of the stop block 87 in the mating groove, resulting in the rotating plate 85 not having fully moved below the stop block 87 after the alignment block 3 has been fully inserted into the alignment groove 13, therefore, referring to Figure 4 , Figure 5 and Figure 7 A pressure plate 11 is fixedly installed at the bottom of the connector 26, and the pressure plate 11 is located on the side of the connecting frame 83 away from the slide cylinder 82. A connecting groove 12 communicating with the alignment groove 13 is opened on one side surface of the lower connector 5. A Z-shaped sliding groove 14 is opened on the inner side wall of the connecting groove 12. An end cap 29 is opened and closed at the connecting groove 12 of the lower connector 5. A drive assembly 7 is provided in the connecting groove 12 to drive the pressure plate 11 to move the connecting frame 83 away from the alignment block 3. The drive assembly 7 includes a slider 71 slidably disposed in the sliding groove 14, an operating plate 72 connected to the slider 71, and a pressure block 73 fixed on the operating plate 72 for pressing down the pressure plate 11. The pressure block 73 is connected to the side wall of the operating plate 72 near the alignment groove 13 by a short rod 30.
[0060] When it is necessary to extend the elastic telescopic rod 81, simply move the slider 71 to the vertical part of the Z-shaped groove 14 via the operating plate 72. At this time, the pressure block 73 extends into the alignment groove 13 and is located above the pressure plate 11. Then, move the slider 71 downward in the groove 14 via the operating plate 72, so that the pressure block 73 moves the pressure plate 11 downward. The pressure plate 11 causes the elastic telescopic rod 81 to extend. The elastic telescopic rod 81 moves the rotating plate 85 to the bottom of the stop block 87 via the connecting frame 83. The rotating plate 85 rotates under the action of the torsion spring 86 until it abuts against the stop block 87. At this time, under the abutment action of the rotating plate 85 and the stop block 87, the upper connector 1 can be quickly driven to rotate slightly on the lower connector 5, thereby quickly adjusting the alignment of the insertion groove 4 and the insertion hole 10.
[0061] After the insertion slot 4 is aligned with the insertion hole 10, the locking block 2 needs to be locked and fixed in the slot 6. Therefore, refer to... Figure 1 , Figure 2 , Figure 3 and Figure 4 A snap-fit hole 19 is provided through the side wall of the lower connector 5. The snap-fit hole 19 is connected to both rectangular slots, and the opening direction of the snap-fit hole 19 is perpendicular to the opening direction of the insertion hole 10. Correspondingly, a connecting hole 18 is provided through the side wall of the rectangular block of both snap-fit blocks 2, and the connecting hole 18 is perpendicularly connected to the insertion slot 4.
[0062] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 9When the locking block 2 is inserted into the locking slot 6, the adjusting connection hole 18 is aligned with the locking hole 19. A fixing rod 20 is detachably installed on the lower connector 5 within the locking hole 19. The fixing rod 20 passes through two connection holes 18. By passing the fixing rod 20 through the locking hole 19 and the connection holes 18, the locking block 2 is prevented from coming out of the locking slot 6, thus locking the locking block 2 in the locking slot 6. To prevent the fixing rod 20 from coming out of the locking hole 19, an insertion hole 31 is provided on one side wall of the lower connector 5. The insertion hole 31 is located on one side of the locking hole 19. An insertion block 32 is inserted into the insertion hole 31. One end of the insertion block 32 is integrally connected to a positioning plate 23. When the insertion block 32 is inserted into the insertion hole 31, the positioning plate 23 abuts against the end of the fixing rod 20 and covers the locking hole 19.
[0063] To further improve the stability of card block 2 being locked in card slot 6, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 and Figure 9 The lower connector 5 is equipped with a locking assembly 9 for locking the locking block 2. The locking assembly 9 includes two plug rods 91, an auxiliary plate 92 for connecting the two plug rods 91, and four flexible anti-slip strips 93 connected to the auxiliary plate 92. The anti-slip strips 93 are made of rubber, and the four anti-slip strips 93 are arranged in pairs, each corresponding to one of the two plug rods 91. The peripheral walls on both sides of the plug rods 91 are provided with placement grooves 16 for placing the anti-slip strips 93. The length direction of the placement grooves 16 is consistent with the length direction of the plug rods 91. Before the plug rods 91 are inserted into the plug grooves 4, the anti-slip strips 93 are placed flat in the placement grooves 16, with one side of the anti-slip strips 93 protruding from the placement grooves 16.
[0064] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 and Figure 9Two insertion rods 91 correspond one-to-one with two insertion holes 10, and the diameter of the insertion hole 10 is slightly larger than the diameter of the insertion rod 91. The inner diameter of the insertion groove 4 is equal to the diameter of the insertion rod 91, so that the insertion rod 91 can drive the anti-slip strip 93 smoothly through the insertion hole 10 and reach the insertion groove 4. The cylindrical block side wall of the locking block 2 is also provided with two anti-slip grooves 15 that communicate with the insertion groove 4. The two anti-slip grooves 15 correspond one-to-one with the two anti-slip strips 93 on the insertion rod 91. As the insertion rod 91 continues to penetrate deeper into the insertion groove 4, the groove opening of the insertion groove 4 pushes the end of the anti-slip strip 93 away from the auxiliary plate 92 to come out of the placement groove 16, and continues to extend into the anti-slip groove 15 on the locking block 2 and insert into the anti-slip groove 15; the anti-slip strip 93 can increase the friction between the locking block 2 and the locking groove 6, so that the locking block 2 can be stably locked in the locking groove 6. To ensure that the anti-slip strip 93 can smoothly enter the corresponding anti-slip groove 15, a limiting strip 33 is integrally formed on one side of the peripheral wall of the plug rod 91. The length direction of the limiting strip 33 is consistent with the length direction of the plug rod 91. A limiting groove 34 is provided on the inner wall of the plug hole 10 and the inner wall of the plug groove 4 for the limiting strip 33 to slide and insert. When the plug rod 91 is inserted into the plug hole 10 and the plug groove 4, the limiting strip 33 is located in the limiting groove 34. At this time, the anti-slip strip 93 is aligned with the anti-slip groove 15.
[0065] To ensure that the insertion rod 91 and the fixing rod 20 work together to securely lock the locking block 2 in the slot 6, refer to... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 and Figure 9 A notch 35 is provided on the peripheral wall of one end of the fixing rod 20. A protrusion 36 that engages with the notch 35 is fixed on the positioning plate 23. Two positioning holes 22 are provided on one side of the peripheral wall of the fixing rod 20. When installing the fixing rod 20, the protrusion 36 is first inserted into the notch 35, and the fixing rod 20 with the positioning plate 23 is inserted into the engagement hole 19 and the connection hole 18. Then, the positioning plate 23 is rotated. The positioning plate 23 drives the fixing rod 20 to rotate through the protrusion 36. When the insertion block 32 on the positioning plate 23 is aligned with the insertion hole 31 on the lower connector 5, the positioning plate 23 is pushed to insert the insertion block 32 into the insertion hole 31. At this time, the positioning plate 23 drives the fixing rod 20 to move, so that the two positioning holes 22 on the fixing rod 20 are respectively aligned with the two insertion slots 4. Both connector rods 91 are equipped with positioning pins 21 at their ends. When the positioning holes 22 are aligned with the connector slots 4, the connector rods 91 are inserted into the connector holes 10 and the connector slots 4 in sequence, so that the positioning pins 21 are inserted into the positioning holes 22. At this time, the fixing rod 20 is stably locked onto the lower connector 5. Meanwhile, a groove 17 for embedding the auxiliary plate 92 is provided on the side wall of the lower connector 5 at the connector hole 10. When the positioning pins 21 are inserted into the positioning holes 22, the auxiliary plate 92 is stably embedded in the groove 17.
[0066] The implementation principle of a mechanical connection joint for precast concrete square piles according to an embodiment of this application is as follows: First, align the locking block 2 on the upper connector 1 with the locking groove 6 on the lower connector 5, and then insert the locking block 2 into the locking groove 6. At this time, the alignment block 3 on the upper connector 1 is inserted into the alignment groove 13 on the lower connector 5. During the process of the alignment block 3 on the upper connector 1 being inserted into the alignment groove 13 on the lower connector 5, the stop block 87 in the alignment groove 13 pushes the rotating plate 85 to rotate around the round rod 84 towards the sliding cylinder 82. At this time, the torsion spring 86 deforms and generates elastic force. As the alignment block 3 continues to go deeper, when the alignment block 3 drives the rotating plate 85 to move below the stop block 87, the rotating plate 85, under the elastic force of the torsion spring 86, is driven to rotate around the round rod 84 away from the sliding cylinder 82. At this time, the top of the rotating plate 85 abuts against the bottom of the stop plate. The alignment block 3 is pre-connected in the alignment groove 13 under the snapping action of the rotating plate 85 and the baffle, so that the insertion groove 4 on the snap block 2 is exactly at the same height as the insertion hole 10 in the slot 6. At this time, it is only necessary to rotate the upper connector 1 to make the alignment block 3 rotate and fine adjust within the alignment groove 13, so that the insertion groove 4 on the snap block 2 and the insertion hole 10 in the slot 6 can be quickly rotated to the alignment state.
[0067] Then, the protrusion 36 on the positioning plate 23 is inserted into the notch 35 on the fixing rod 20, and the fixing rod 20 with the positioning plate 23 is inserted into the snap hole 19 and the connecting hole 18. Then, the positioning plate 23 is rotated, and the positioning plate 23 drives the fixing rod 20 to rotate through the protrusion 36. When the insert block 32 on the positioning plate 23 is aligned with the insertion hole 31 on the lower connector 5, the positioning plate 23 is pushed to insert the insert block 32 on the positioning plate 23 into the insertion hole 31 on the lower connector 5. At this time, the positioning plate 23 drives the fixing rod 20 to move, so that the two positioning holes 22 on the fixing rod 20 are respectively aligned with the two insertion slots 4, and the snap block 2 is locked in the snap slot 6 under the action of the fixing rod 20.
[0068] Finally, align the limiting strip 33 on the plug rod 91 with the limiting groove 34 on the lower connector 5, and drive the plug rod 91 through the auxiliary plate 92 to drive the anti-slip strip 93 through the plug hole 10 and into the plug groove 4; as the plug rod 91 continues to go deeper into the plug groove 4, the groove opening of the plug groove 4 pushes the anti-slip strip 93 away from the auxiliary plate 92 from the placement groove 16, and continues to extend along the anti-slip groove 15 on the locking block 2 and be inserted into the anti-slip groove 15; until the positioning post 21 at the end of the plug rod 91 is inserted into the positioning hole 22 on the fixing rod 20, stop pushing the plug rod 91, at which point the auxiliary plate 92 is stably embedded in the groove 17 on one side of the lower connector 5.
[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A mechanical connection joint for precast concrete square piles, characterized in that, include The upper connector has a locking block and a cylindrical alignment block installed at its bottom, and the locking block has a insertion groove on its side wall. The lower connector has a slot for inserting the card block and an alignment slot for inserting the alignment block on its top. The inner wall of the card slot has a through hole corresponding to the insertion slot. Alignment device, located between alignment block and alignment groove, and used to adjustably install alignment block in alignment groove, and capable of pre-connecting upper connector to lower connector; The locking assembly is equipped with a plug rod that passes through a plug hole and is inserted into a plug slot, thereby locking the block in the slot; The alignment block is cylindrical, and the alignment groove is inserted and adapted to fit the alignment block. The alignment device includes... The elastic telescopic rod is designed to extend and retract along the length of the alignment block, with one end fixed at the center of the bottom of the alignment block. The sliding cylinder is located on one side of the elastic telescopic rod and is slidably installed at the bottom of the alignment block along the length of the alignment block; The connecting frame is fixedly installed at the bottom of the slide cylinder and connected to the end of the elastic telescopic rod away from the alignment block. The side of the frame facing away from the elastic telescopic rod is open. The round rod is fixedly installed inside the connecting frame and is perpendicular to the slide cylinder; The rotating plate is rotatably mounted on the round rod on one side, and extends from the opening of the connecting frame to the outside of the connecting frame on the other side. A torsion spring is fitted onto a round rod, with one end connected to the round rod and the other end connected to a rotating plate. The stop block is fixedly installed on the inner wall of the alignment slot; When the torsion spring is in its natural state, the angle between the rotating plate and the slide cylinder is no greater than 90°, and the distance from the surface of the rotating plate away from the round rod to the center line of the alignment block is greater than the distance from the surface of the stop block near the center line of the alignment groove to the center line of the alignment groove.
2. The mechanical connection joint for precast concrete square piles according to claim 1, characterized in that, Multiple sliding cylinders are provided, and the multiple sliding cylinders are evenly distributed around the periphery of the elastic telescopic rod. Multiple stop blocks are also provided, and the multiple stop blocks correspond one-to-one with the multiple sliding cylinders.
3. The mechanical connection joint for precast concrete square piles according to claim 1, characterized in that, The end of the elastic telescopic rod is fixed with a pressure plate. The pressure plate is located on the side of the connecting frame away from the slide cylinder. A connecting groove communicating with the alignment groove is opened on the surface of the lower connector side. A driving component is provided in the connecting groove to drive the pressure plate to move the connecting frame away from the alignment block.
4. The mechanical connection joint for precast concrete square piles according to claim 3, characterized in that, The inner wall of the connecting groove is provided with a Z-shaped sliding groove, and the driving component includes a slider that slides in the sliding groove, an operating plate connected to the slider, and a pressure block fixed on the operating plate for pressing down the pressure plate.
5. A mechanical connection joint for precast concrete square piles according to claim 1, characterized in that, One side wall of the card block is arc-shaped, and the insertion slot is located on the arc-shaped side wall of the card block. An anti-slip groove communicating with the insertion slot is also provided on the arc-shaped side wall of the card block. The insertion rod is inserted and adapted to the insertion slot, and the diameter of the insertion rod is smaller than the diameter of the insertion hole. The locking assembly includes an auxiliary plate fixed to the end of the insertion rod and a flexible anti-slip strip connected to the auxiliary plate at one end. A placement groove for placing the anti-slip strip is provided on the peripheral wall of the insertion rod. The side of the anti-slip strip away from the insertion rod protrudes from the placement groove. The insertion rod can drive the anti-slip strip to pass smoothly through the insertion hole and reach the insertion slot. When the insertion rod is inserted into the insertion slot, the end of the anti-slip strip away from the auxiliary plate comes out from the placement groove and inserts into the anti-slip groove.
6. A mechanical connection joint for precast concrete square piles according to claim 5, characterized in that, The lower connector sidewall has a groove for inserting the auxiliary plate at the insertion hole.
7. A mechanical connection joint for precast concrete square piles according to claim 1, characterized in that, A connecting hole is provided through the side wall of the card block, and the opening direction of the insertion slot is perpendicular to the opening direction of the connecting hole. A snap-fit hole is provided through the side wall of the lower connector, and the opening direction of the snap-fit hole is perpendicular to the opening direction of the insertion hole. When the card block is inserted into the card slot, the connecting hole and the snap-fit hole are aligned. A fixing rod can be detachably installed on the lower connector, and the fixing rod can be inserted and removed into the snap-fit hole and the connecting hole.
8. A mechanical connection joint for precast concrete square piles according to claim 7, characterized in that, The insertion slot is connected to the connection hole, and a positioning post is fixed at the end of the insertion rod. A positioning hole for the positioning post to be inserted is opened on the peripheral wall of the fixing rod.
9. A mechanical connection joint for precast concrete square piles according to claim 8, characterized in that, A positioning plate is installed on the side wall of the lower connector for quickly aligning the positioning hole with the positioning post.