Larsen steel sheet pile and ALC plate combined structure

Abstract

The invention relates to a Larsen steel sheet pile and ALC plate combined structure, and belongs to the technical field of Larsen steel sheet piles. Comprising a cofferdam body, the cofferdam body is formed by sequentially embedding a circle of Larsen steel sheet piles, an ALC plate body is arranged on the inner sides of the Larsen steel sheet piles, the Larsen steel sheet piles and the ALC plate body are connected through a connecting mechanism, the connecting mechanism comprises a fixing base and a connecting base, the fixing base is detachably connected to the connecting base, the fixing base is inserted into the Larsen steel sheet piles, and the ALC plate body is connected to the ALC plate body. The ALC plate body is arranged in the connecting base, a first nut and a supporting rod capable of expanding outwards are arranged on the fixing base, and the Larsen steel sheet pile and the fixing base are fixed through the first nut and the supporting rod. The ALC plate body is arranged on the connecting seat, the lifting appliance is arranged at the upper end of the ALC plate body, the lower side locking assembly is arranged at the lower end of the connecting seat, the lifting appliance is connected with the lower side locking assembly through the transmission assembly, and when the transmission assembly acts, the lower side locking assembly is locked, and meanwhile the lifting appliance is unlocked; the problem that at present, the assembly process of Larsen steel sheet piles and ALC plates is tedious is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of Larsen steel sheet piles, and in particular relates to a combined structure of a Larsen steel sheet pile and an ALC plate. Background Art

[0002] In the field of construction engineering, Larsen steel sheet piles are widely used in the construction of cofferdams, foundation pit support and other structures due to their good strength and waterproof performance. In order to meet the diverse engineering needs, ALC boards and Larsen steel sheet piles are often used in combination.

[0003] At present, the traditional connection method is usually to drill holes in the ALC sheet to achieve its connection with the Larsen steel sheet pile. However, in the subsequent concrete pouring operation, the drilling destroys the original structural integrity of the ALC sheet. When the pressure and vibration force generated by the concrete pouring are applied to the ALC sheet, the ALC sheet is very likely to break. This fracture problem not only makes the ALC sheet unable to function normally, seriously weakens the stability of the overall structure, but also causes rework, significantly increasing construction costs and time costs.

[0004] In addition, the existing assembly process of Larsen steel sheet piles and ALC panels is extremely cumbersome. In the preparation stage, the ALC panels need to be punched, and then a variety of complex connection components need to be installed on the Larsen steel sheet piles, and each component needs to be accurately positioned and debugged during the installation process. During the installation process, any slight operational deviation may have a negative impact on the performance of the entire composite structure. Such complex assembly steps greatly reduce construction efficiency, significantly extend the project cycle, and seriously hinder the efficient advancement of the project. Summary of the invention

[0005] The present invention overcomes the shortcomings of the prior art and proposes a Larsen steel sheet pile and ALC board combination structure, thereby solving the problem of complicated assembly process of the Larsen steel sheet pile and ALC board.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0007] A combined structure of Larsen steel sheet piles and ALC boards, including a cofferdam, which is formed by a circle of Larsen steel sheet piles being sequentially embedded, an ALC board body being arranged on the inner side of the Larsen steel sheet piles, the Larsen steel sheet piles and the ALC board body being connected via a connecting mechanism, the connecting mechanism comprising a fixing seat and a connecting seat, the fixing seat being detachably connected to the connecting seat, the fixing seat being inserted into the interior of the Larsen steel sheet pile, the ALC board body being arranged inside the connecting seat, a first nut and an outwardly expandable strut being arranged on the fixing seat, the Larsen steel sheet pile and the fixing seat being fixed by the first nut and the strut; the ALC board body being arranged on the connecting seat, a sling being arranged at the upper end of the ALC board body, a lower locking assembly being arranged at the lower end of the connecting seat, the sling being connected to the lower locking assembly via a transmission assembly, the lower locking assembly being locked when the transmission assembly is actuated, and the sling being unlocked at the same time.

[0008] Furthermore, a first groove is provided inside the fixing seat, and the opening of the first groove faces one side of the connecting seat; two clamping grooves are provided on the side wall at one end of the first groove away from the opening, and a first connecting seat is fixedly provided at the end of the first groove away from the opening, and a first clamping seat is fixedly provided on both sides of the first connecting seat, and the two first clamping seats are respectively located inside the two clamping grooves; a first threaded rod is rotatably inserted inside the first groove, and an inner end of the first threaded rod is rotatably connected to the first connecting seat; a second connecting seat is screwed on the outer side of the first threaded rod, and a second clamping seat is fixedly provided on both sides of the second connecting seat, and the two second clamping seats are respectively located inside the two clamping grooves; two of the support rods are provided between the first clamping seat and the second clamping seat inside the same clamping groove, and the ends of the two support rods close to each other are hinged to each other, and the ends of the two support rods away from each other are respectively hinged to the first clamping seat and the second clamping seat; the first nut is screwed on the outer side of the fixing seat.

[0009] Furthermore, a circular groove is provided on the inner wall of one end of the first groove close to the opening; two symmetrical slide grooves are provided on the inner wall of the groove, an unlocking ring is slidably provided inside the groove, and two symmetrical sliders are fixedly provided on the outer surface of the unlocking ring, and the two sliders are respectively slidably inserted into the two slide grooves; a circular conical extrusion block is provided at the opening on one side of the unlocking ring away from the first connecting seat.

[0010] Furthermore, a second threaded rod is fixedly provided on the connecting seat, a sleeve is screwed on the outer side of the second threaded rod, a hexagonal plate is fixedly sleeved on the outer side of one end of the sleeve close to the second threaded rod, a circle of blocks arranged in a circular array is provided on the end of the sleeve away from the second threaded rod, and a conical block is fixedly provided on the end of each block away from the sleeve.

[0011] Furthermore, the connecting seat includes a main body plate, an upper horizontal plate, a lower horizontal plate, and a vertical plate; the second threaded rod is fixedly arranged on one side end face of the main body plate; the upper horizontal plate is fixedly connected to the upper edge of the side end face of the main body plate close to the second threaded rod, and the lower horizontal plate is fixedly connected to the lower edge of the side end face of the main body plate away from the second threaded rod; the vertical plate is kept parallel to the main body plate, and the lower edge of the vertical plate is fixedly connected to the side edge of the lower horizontal plate away from the main body plate; a pull plate is fixedly arranged on the upper ends of both sides of the main body plate.

[0012] Furthermore, the lower locking assembly includes a fixed plate and a connecting seat; two symmetrical horizontal grooves are provided on the upper end surface of the lower horizontal plate, and a vertical groove is provided on the end surface of the vertical plate close to the main plate, and the two horizontal grooves are connected to the vertical groove at one end away from the main plate; a connecting plate is slidably provided inside the two horizontal grooves, and a vertical fixed plate is provided inside the vertical groove, and the two connecting plates are fixedly connected to the lower end of the fixing plate at one end away from the main plate.

[0013] Furthermore, the transmission assembly includes a spring sheet, a latch, and a lever; three receiving grooves are arranged on the end face of the main body plate away from the second threaded rod, and a latch hole is arranged at the center of the end face of the inner end of the receiving groove; an arc-shaped spring sheet is arranged inside each receiving groove, and the upper and lower ends of the spring sheet are respectively fixedly connected to the upper and lower ends inside the receiving groove, and the middle part of the spring sheet protrudes outward; a latch is fixedly arranged at the center of the inner side surface of the spring sheet, and the latch is inserted into the latch hole of the receiving groove, and two second grooves are arranged on the outer cylindrical surface of the latch, and a first spring is fixedly arranged at the inner end of each second groove, and a limit block is fixedly arranged at the outer end of the first spring, and a lever is respectively rotatably arranged on the two latches on both sides at the end away from the spring sheet, and the lever is located on the side of the main body plate close to the second threaded rod, and the middle part of the lever is hinged to the latch.

[0014] Furthermore, the transmission assembly also includes a friction strip and a second spring; a square third groove is arranged inside the upper horizontal plate, a friction strip is slidably arranged inside the third groove, a second spring is fixedly arranged at one end of the inner side of the third groove, and the second spring is fixedly connected to the friction strip; two trapezoidal blocks are fixedly arranged at the lower end of the friction strip; a contact inclined surface is arranged on the side of the two trapezoidal blocks away from the second spring.

[0015] Furthermore, the transmission assembly also includes a push block, a rack, a one-way gear, a driving gear, a driven gear, and a fourth threaded rod; a U-shaped push block is respectively sleeved on the outer side of the lower ends of the two levers, and the two push blocks are fixedly connected by a horizontal connecting rod; a connecting cavity is respectively arranged inside the lower ends of both sides of the main body plate, and the two connecting cavities are respectively connected with the two horizontal grooves; one end of the two push blocks is respectively extended into the two connecting cavities, and a vertical rack is fixedly arranged at the end of the push block extending into the connecting cavity, and a vertical third spring is fixedly arranged between the lower end of the rack and the bottom surface of the connecting cavity; a one-way gear is rotatably arranged inside the connecting cavity, and the one-way gear is meshed with the rack; a driving gear is fixedly arranged at the axis center of the one-way gear, and a fourth threaded rod is rotatably arranged inside the connecting cavity, and a driven gear is fixedly sleeved on the outer side of the fourth threaded rod, and the driven gear is meshed with the driving gear; the fourth threaded rods inside the two connecting cavities are respectively screwed with the two connecting plates.

[0016] Furthermore, the sling includes a jacket, which is a U-shaped plate structure with an opening facing downward. A clamping plate is arranged inside the jacket, and two threaded holes are arranged on the side wall of the jacket. A third threaded rod is screwed inside each threaded hole, and an inner end of the third threaded rod is rotatably connected to the clamping plate, and a friction wheel is fixedly arranged on an outer end of the third threaded rod.

[0017] The beneficial effects of the present invention compared with the prior art are as follows: First, through the unique connection mechanism design, the traditional method of punching and fixing the ALC board is abandoned, and the structural integrity of the ALC board is maintained to the greatest extent. During the concrete pouring process, the risk of ALC board breaking due to pressure and vibration caused by drilling is avoided, which not only ensures the normal use function of the ALC board, but also greatly improves the stability of the overall structure, effectively reduces the probability of rework caused by ALC board breakage, and significantly reduces construction costs and time costs.

[0018] Secondly, in terms of assembly, the connection mechanism of this combined structure is cleverly designed, which greatly simplifies the assembly process. There is no need to perform complex pre-processing such as punching holes on the ALC sheet. The connection parts such as the fixing seat and the connecting seat are easy to install, and the connection positioning accuracy between the parts is easier to control. Even if there are certain deviations during the construction operation, it will not have a significant impact on the overall structural performance. This greatly improves the construction efficiency, greatly shortens the project cycle, and effectively promotes the efficient advancement of the project. It has extremely high promotion value in actual engineering applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings: Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure in which the Larsen steel sheet pile is connected to the ALC plate body through a connecting mechanism; Figure 3 It is a connection diagram of the fixing seat and the connecting seat; Figure 4 It is a schematic diagram of the connection between the fixed seat and the sleeve; Figure 5 It is an exploded view of the fixing seat and sleeve; Figure 6 It is a structural diagram of the connecting seat; Figure 7 It is a schematic diagram of the connection between the spring and the latch; Figure 8 It is a schematic diagram of the connection between the connecting seat and the transmission component; Fig. 9 This is the structural diagram of the connecting seat after cutting Figure 1 ; Fig.10 This is the structural diagram of the connecting seat after cutting Figure 2 ; Fig.11 This is the connection diagram between the ALC board body and the hanger; Fig.12 yes Fig.10 A local enlarged schematic diagram of the middle A; Among them, 1 is a cofferdam, 2 is an ALC board body, 3 is a fixing seat, 4 is a connecting seat, 5 is a first groove, 6 is a first threaded rod, 7 is a first connecting seat, 8 is a second connecting seat, 10 is a support rod, 11 is a slot, 12 is a first nut, 13 is a slide groove, 14 is an unlocking ring, 15 is a tapered extrusion block, 16 is a second threaded rod, 17 is a sleeve, 18 is a tapered block, 19 is a driving gear, 20 is a screw hole, 21 is a pull plate, 22 is a receiving groove, 23 is a spring, 24 is a latch, 25 is a second groove, 26 is the first spring, 27 is the limit block, 28 is the lever, 29 is the third groove, 30 is the friction strip, 31 is the trapezoidal block, 32 is the jacket, 33 is the third threaded rod, 34 is the clamping plate, 35 is the friction wheel, 36 is the push block, 37 is the rack, 38 is the one-way gear, 39 is the driven gear, 40 is the fourth threaded rod, 41 is the fixed plate, 42 is the connecting plate, 43 is the second spring, 44 is the third spring, 45 is the main plate, 46 is the upper horizontal plate, 47 is the lower horizontal plate, and 48 is the vertical plate. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0021] like Figure 1 As shown in FIG. 12 , the present invention provides a combined structure of a Larsen steel sheet pile and an ALC board, comprising a cofferdam 1, wherein the cofferdam 1 is formed by a circle of Larsen steel sheet piles being sequentially embedded, an ALC board body 2 is arranged on the inner side of the Larsen steel sheet pile, the Larsen steel sheet pile and the ALC board body 2 are connected by a connecting mechanism, the connecting mechanism comprising a fixing seat 3 and a connecting seat 4, the fixing seat 3 is detachably connected to the connecting seat 4, the fixing seat 3 is inserted into the inside of the Larsen steel sheet pile, the ALC board body 2 is arranged in the inside of the connecting seat 4, a first nut 12 and an outwardly expandable strut 10 are arranged on the fixing seat 3, the Larsen steel sheet pile and the fixing seat 3 are fixed by the first nut 12 and the strut 10; the ALC board body 2 is arranged on the connecting seat 4, a hanger is arranged at the upper end of the ALC board body 2, a lower locking assembly is arranged at the lower end of the connecting seat 4, the hanger is connected to the lower locking assembly through a transmission assembly, and when the transmission assembly is actuated, the lower locking assembly is locked and the hanger is unlocked at the same time.

[0022] The fixing seat 3 is a cylindrical structure with one end open. A first groove 5 is arranged inside the fixing seat 3, and the opening of the first groove 5 faces one side of the connecting seat 4. Two symmetrical square clamping grooves are arranged on the side wall of the end of the first groove 5 away from the opening, and the length direction of the clamping groove is parallel to the axial direction of the first groove 5. A first connecting seat 7 is fixedly arranged at the end of the first groove 5 away from the opening, and a first clamping seat is fixedly arranged on both sides of the first connecting seat 7, and the two first clamping seats are respectively located inside the two clamping grooves. A first threaded rod 6 is rotatably inserted inside the first groove 5, and the inner end of the first threaded rod 6 is rotatably connected to the first connecting seat 7, and a hexagonal block is fixedly arranged on the outer end of the first threaded rod 6. A circular ring-shaped second connecting seat 8 is screwed on the outer side of the first threaded rod 6, and a second clamping seat is fixedly arranged on both sides of the second connecting seat 8, and the two second clamping seats are respectively located inside the two clamping grooves. Two struts 10 are arranged between the first and second clamping seats in the same clamping groove, the ends of the two struts 10 close to each other are hinged to each other, and the ends of the two struts 10 far away from each other are respectively hinged to the first and second clamping seats. The first nut 12 is screwed on the outside of the fixing seat 3.

[0023] A circular groove 11 is arranged on the inner wall of the end of the first groove 5 close to the opening, and the hexagonal block on the first threaded rod 6 is located at the inner end of the groove 11; two symmetrical slide grooves 13 are arranged on the inner wall of the groove 11, and the extension direction of the slide grooves 13 is parallel to the axial direction of the first groove 5, and the slide grooves 13 are connected to the outer side of the fixed seat 3. A circular unlocking ring 14 is slidably arranged inside the groove 11, and two symmetrical sliders are fixedly arranged on the outer side of the unlocking ring 14, and the two sliders are respectively slidably inserted into the two slide grooves 13, and the outer end of the slider extends to the outside of the fixed seat 3. A circular conical extrusion block 15 is arranged at the opening on the side of the unlocking ring 14 away from the first connecting seat 7, and the inner diameter of the end of the conical extrusion block 15 away from the first connecting seat 7 is larger than the inner diameter of the end of the conical extrusion block 15 close to the first connecting seat 7.

[0024] A second threaded rod 16 is fixedly arranged on the connecting seat 4, and a sleeve 17 is screwed on the outer side of the second threaded rod 16, and a hexagonal plate is fixedly sleeved on the outer side of one end of the sleeve 17 close to the second threaded rod 16, and a circle of blocks arranged in a circular array is arranged on the end of the sleeve 17 away from the second threaded rod 16, and a conical block 18 is fixedly arranged on the end of each block away from the sleeve 17, and the outer diameter of the conical block 18 close to the block is larger than the outer diameter of the conical block 18 away from the block, and the outer diameter of the conical block 18 close to the block is larger than the outer diameter of the sleeve 17.

[0025] The connecting seat 4 includes a main body plate 45, an upper horizontal plate 46, a lower horizontal plate 47, and a vertical plate 48; the main body plate 45 is a vertically arranged square plate structure, the second threaded rod 16 is fixedly arranged on one side end face of the main body plate 45, and the second threaded rod 16 remains perpendicular to the main body plate 45; the upper horizontal plate 46 and the lower horizontal plate 47 are both horizontally arranged square plate structures, the upper horizontal plate 46 is fixedly connected to the upper edge of the end face of one side of the main body plate 45 close to the second threaded rod 16, and the lower horizontal plate 47 is fixedly connected to the lower edge of the end face of one side of the main body plate 45 away from the second threaded rod 16; the vertical plate 48 is a vertically arranged square plate structure, the vertical plate 48 remains parallel to the main body plate 45, and the lower edge of the vertical plate 48 is fixedly connected to the edge of one side of the lower horizontal plate 47 away from the main body plate 45.

[0026] A screw hole 20 is respectively provided on the upper ends of both sides of the end surface of one side of the main plate 45 close to the second threaded rod 16, and a pull plate 21 is respectively fixedly provided on the upper ends of both sides of the main plate 45. The two pull plates 21 are symmetrical on the left and right, and the pull plates 21 are horizontally arranged U-shaped structures. The U-shaped openings of the two pull plates 21 face each other, and the fixing bolts pass through the rear ends of the two pull plates 21 and are screwed into the screw holes 20 on the main plate 45, thereby fixing the pull plates 21 to the main plate 45.

[0027] The sling includes a jacket 32, which is a U-shaped plate structure with an opening facing downward. A clamping plate 34 is arranged inside the jacket 32, and two threaded holes are arranged on the side wall of the jacket 32. A third threaded rod 33 is screwed inside each threaded hole. The inner end of the third threaded rod 33 is rotatably connected to the clamping plate 34, and the outer end of the third threaded rod 33 is fixedly provided with a friction wheel 35.

[0028] The lower locking assembly includes a fixing plate 41 and a connecting seat 4 .

[0029] Two symmetrical horizontal grooves are arranged on the upper end surface of the lower horizontal plate 47, and a vertical groove is arranged on the end surface of the vertical plate 48 close to the main plate 45. The ends of the two horizontal grooves away from the main plate 45 are connected to the vertical groove. A horizontal connecting plate 42 is slidably arranged inside the two horizontal grooves, and a vertical fixing plate 41 is arranged inside the vertical groove. The ends of the two connecting plates 42 away from the main plate 45 are fixedly connected to the lower end of the fixing plate 41.

[0030] The transmission assembly includes a spring piece 23 , a latch pin 24 , a lever 28 , a friction strip 30 , a second spring 43 , a push block 36 , a rack 37 , a one-way gear 38 , a driving gear 19 , a driven gear 39 , and a fourth threaded rod 40 .

[0031] Three receiving grooves 22 are arranged on the end surface of the main body plate 45 away from the second threaded rod 16. The three receiving grooves 22 are arranged horizontally. The receiving grooves 22 are square structures. A latch hole is arranged at the center of the end surface of one end of the inner side of the receiving groove 22. An arc-shaped spring piece 23 is arranged inside each receiving groove 22. The upper and lower ends of the spring piece 23 are fixedly connected to the upper and lower ends inside the receiving groove 22 respectively, and the middle part of the spring piece 23 protrudes outward. A cylindrical latch 24 is fixedly arranged at the center of the inner side surface of the spring piece 23. The latch 24 is plugged into the latch hole of the receiving groove 22. Two second grooves 25 are arranged on the outer cylindrical surface of the latch 24. The second grooves 25 are arranged along the radial direction of the latch 24. A first spring 26 is fixedly arranged at one end of the inner side of each second groove 25. A stopper 27 is fixedly arranged at one end of the outer side of the first spring 26. The outer end surface of the stopper 27 maintains an arc-shaped structure at the edge of the side away from the spring piece 23. The two latches 24 on both sides are rotatably provided with a lever 28 at one end away from the spring sheet 23 . The lever 28 is located on one side of the main plate 45 close to the second threaded rod 16 , and the middle part of the lever 28 is hinged to the latch 24 .

[0032] A square third groove 29 is provided inside the upper horizontal plate 46, a friction strip 30 is slidably provided inside the third groove 29, a second spring 43 is fixedly provided at one end of the inner side of the third groove 29, and the second spring 43 is fixedly connected to the friction strip 30. Two trapezoidal blocks 31 are fixedly provided at the lower end of the friction strip 30, and the two trapezoidal blocks 31 are provided corresponding to the two levers 28; a contact slope is provided on one side of the two trapezoidal blocks 31 away from the second spring 43, and the end of the contact slope away from the second spring 43 gradually moves away from the main plate 45.

[0033] A U-shaped push block 36 is sleeved on the outer side of the lower end of the two levers 28 respectively, and the two push blocks 36 are fixedly connected by a horizontal connecting rod.

[0034] A connecting cavity is provided inside the lower end of both sides of the main plate 45, and the two connecting cavities are connected with the two horizontal grooves. One end of the two push blocks 36 extends into the two connecting cavities, and a vertical rack 37 is fixedly provided at the end of the push block 36 extending into the connecting cavity. A vertical third spring 44 is fixedly provided between the lower end of the rack 37 and the bottom surface of the connecting cavity. A one-way gear 38 is rotatably provided inside the connecting cavity, and the one-way gear 38 is meshed with the rack 37. A driving gear 19 is fixedly provided at the axis of the one-way gear 38, and a fourth threaded rod 40 is rotatably provided inside the connecting cavity, and the fourth threaded rod 40 is kept vertical to the main plate 45. A driven gear 39 is fixedly sleeved on the outer side of the fourth threaded rod 40, and the driven gear 39 is meshed with the driving gear 19. The fourth threaded rods 40 inside the two connecting cavities are respectively screwed with the two connecting plates 42.

[0035] The working principle of the present invention is: In the initial state, the distance between the first connection seat 7 and the second connection seat 8 is the longest. At this time, the first clamping seat and the second clamping seat are located at the two ends of the inner side of the clamping groove, and the two struts 10 between the first clamping seat and the second clamping seat are both located inside the clamping groove. Then the fixing seat 3 is inserted into the connection hole of the Larsen steel sheet pile, and then the inner hexagon socket 17 is inserted from the opening of the first groove 5 of the fixing seat 3. The first threaded rod 6 is rotated by the inner hexagon socket 17, and the first threaded rod 6 drives the second connection seat 8 to slide in the direction close to the first connection seat 7, so that the distance between the first connection seat 7 and the second connection seat 8 gradually decreases, and the first clamping seat and the second clamping seat gradually approach each other, so that the angle between the two struts 10 gradually decreases, and the connection of the two struts 10 extends to the outside of the clamping groove, thereby realizing the outward expansion of the struts 10. After the outward expansion, the two groups of struts 10 and the fixing seat 3 form a cross structure. Then rotate the first nut 12, and the first nut 12 gradually approaches the expanded support rod 10 until the first nut 12 contacts the Larsen steel sheet pile. The stretched steel sheet pile is clamped by the first nut 12 and the two groups of expanded support rods 10, thereby realizing the mutual fixation of the fixed seat 3 and the Larsen steel sheet pile.

[0036] Measure the distance between the Larsen steel sheet pile and the ALC board body 2, then rotate the sleeve 17, and the sleeve 17 moves along the axis of the second threaded rod 16, and continuously adjusts the distance between the sleeve 17 and the second threaded rod 16. During the movement of the sleeve 17, the end of the sleeve 17 away from the second threaded rod 16 is gradually inserted into the opening of the first groove 5 of the fixing seat 3, and a circle of conical blocks 18 on the sleeve 17 is clamped in the clamping groove 11 of the fixing seat 3, thereby preventing the sleeve 17 from being separated from the fixing seat 3. After the sleeve 17 stops rotating, the Larsen steel sheet pile is fixedly connected to the connecting seat 4 through the fixing seat 3, the sleeve 17, and the second threaded rod 16. When it is necessary to separate the fixing seat 3 from the connecting seat 4 at a later stage, the slider is used to drive the unlocking ring 14 to slide toward the side of the connecting seat 4, so that the conical extrusion block 15 on the unlocking ring 14 contacts a circle of conical blocks 18 on the sleeve 17, so that a circle of conical blocks 18 and a circle of clamping blocks are compressed, and the unlocking ring 14 continues to push the sleeve 17 to slide outward, so that the compressed circle of conical blocks 18 escapes from the opening of the fixing seat 3, thereby realizing the separation of the fixing seat 3 from the connecting seat 4.

[0037] The sleeve 32 is sleeved on the outer side of the upper end of the ALC board body 2, and the two friction wheels 35 are rotated. The friction wheels 35 drive the third threaded rod 33 to rotate, and the third threaded rod 33 drives the clamping plate 34 to continuously approach the ALC board body 2 until the clamping plate 34 clamps the upper end of the ALC board body 2.

[0038] Then, the ALC board body 2 is placed inside the connection seat 4 using a sling. When the ALC board body 2 is continuously lowered inside the connection seat 4, the spring sheet 23 is gradually squeezed, and the collision between the ALC board body 2 and the connection seat 4 is buffered by the spring sheet 23, thereby preventing the ALC board body 2 from being damaged. When the spring sheet 23 is squeezed, the latch 24 moves toward the side away from the spring sheet 23 until the two limit blocks 27 move to the side of the main plate 45 away from the ALC board body 2. Under the action of the rebound force of the first spring 26, the limit blocks 27 extend outward, thereby clamping the latch 24 with the main plate 45. When the latch 24 moves toward the side away from the spring sheet 23, the levers 28 are pushed outward, and the upper ends of the two levers 28 contact the contact slopes of the two trapezoidal blocks 31 and cannot move further, and the lower ends of the two levers 28 tilt outward and contact the two push blocks 36.

[0039] When the ALC board body 2 is completely placed inside the connection seat 4, the lower end of the ALC board body 2 contacts the upper end surface of the connection seat 4, and the lower end of the ALC board body 2 is located between the main plate 45 and the fixed plate 41. At this time, the two friction wheels 35 on the jacket 32 ​​contact the upper end surface of the friction strip 30.

[0040] Press the connecting rod downward to simultaneously drive the two push blocks 36 to move downward, the push blocks 36 drive the rack 37 to slide downward, the third spring 44 is compressed by the rack 37, the rack 37 drives the one-way gear 38 to rotate, the one-way gear 38 drives the driving gear 19 to rotate synchronously, the driving gear 19 drives the driven gear 39 to rotate, the driven gear 39 drives the fourth threaded rod 40 to rotate, the fourth threaded rod 40 drives the connecting plate 42 to slide in the direction close to the main plate 45, the connecting plate 42 drives the fixing plate 41 to slide in the direction close to the main plate 45, until the fixing plate 41 clamps the lower end of the ALC board body 2. Then, the two pull plates 21 are fixed to the upper ends of both sides of the main plate 45 by fixing bolts, and the two pull plates 21 fix the upper ends of both sides of the ALC board body 2, thereby completing the locking of the upper and lower sides of the ALC board body 2 by the connecting seat 4.

[0041] When the two push blocks 36 move downward, the two push blocks 36 drive the lower ends of the two levers 28 to rotate toward the direction close to the connecting seat 4, and the upper ends of the two levers 28 tilt outward. The upper ends of the two levers 28 interact with the contact slopes of the two trapezoidal blocks 31, driving the two trapezoidal blocks 31 to slide toward the direction close to the second spring 43. The two trapezoidal blocks 31 drive the friction strip 30 to slide toward the direction close to the second spring 43, and the second spring 43 is compressed. During the sliding process, the friction strip 30 drives the friction wheel 35 to rotate, and the friction wheel 35 drives the third threaded rod 33 to rotate, so that the clamping plate 34 is away from the upper end of the ALC board body 2, and the hanger is separated from the upper end of the ALC board body 2.

[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A Larsen steel sheet pile and ALC board combined structure, characterized by: The invention comprises a cofferdam (1), wherein the cofferdam (1) is formed by a circle of Larsen steel sheet piles being sequentially embedded, an ALC plate body (2) is arranged inside the Larsen steel sheet piles, the Larsen steel sheet piles and the ALC plate body (2) are connected via a connecting mechanism, the connecting mechanism comprising a fixing seat (3) and a connecting seat (4), the fixing seat (3) being detachably connected to the connecting seat (4), the fixing seat (3) being plugged into the inside of the Larsen steel sheet piles, the ALC plate body (2) being arranged inside the connecting seat (4), and the fixing seat (3) being detachably connected to the connecting seat (4). (3) is provided with a first nut (12) and an outwardly expandable support rod (10), and the Larsen steel sheet pile is fixed to the fixing seat (3) by means of the first nut (12) and the support rod (10); the ALC plate body (2) is arranged on the connecting seat (4), a sling is arranged at the upper end of the ALC plate body (2), and a lower locking assembly is arranged at the lower end of the connecting seat (4), the sling is connected to the lower locking assembly through a transmission assembly, and when the transmission assembly is actuated, the lower locking assembly is locked and the sling is unlocked at the same time.

2. The Larsen steel sheet pile and ALC board combined structure according to claim 1 is characterized in that: The fixing seat (3) is provided with a first groove (5) inside, and the opening of the first groove (5) faces one side of the connecting seat (4); two clamping grooves are provided on the side wall of the first groove (5) at one end away from the opening; a first connecting seat (7) is fixedly provided at the end of the first groove (5) away from the opening; a first clamping seat is fixedly provided on both sides of the first connecting seat (7); the two first clamping seats are respectively located inside the two clamping grooves; a first threaded rod (6) is rotatably inserted inside the first groove (5), and one end of the inner side of the first threaded rod (6) is engaged with the first connecting seat (7). Rotational connection; a second connection seat (8) is threadedly connected to the outer side of the first threaded rod (6), and a second clamping seat is fixedly arranged on both sides of the second connection seat (8), and the two second clamping seats are respectively located inside the two clamping grooves; two support rods (10) are arranged between the first clamping seat and the second clamping seat inside the same clamping groove, and the ends of the two support rods (10) that are close to each other are hinged to each other, and the ends of the two support rods (10) that are away from each other are respectively hinged to the first clamping seat and the second clamping seat; the first nut (12) is threadedly connected to the outer side of the fixed seat (3).

3. The Larsen steel sheet pile and ALC board combined structure according to claim 2 is characterized in that: An annular clamping groove (11) is provided on the inner wall of one end of the first groove (5) close to the opening; two symmetrical slide grooves (13) are provided on the inner wall of the clamping groove (11); an unlocking ring (14) is slidably provided inside the clamping groove (11); two symmetrical slide blocks are fixedly provided on the outer surface of the unlocking ring (14); the two slide blocks are respectively slidably inserted into the two slide grooves (13); and an annular conical extrusion block (15) is provided at the opening on one side of the unlocking ring (14) away from the first connecting seat (7).

4. The Larsen steel sheet pile and ALC board combined structure according to claim 3 is characterized in that: A second threaded rod (16) is fixedly arranged on the connecting seat (4), a sleeve (17) is threadedly connected to the outer side of the second threaded rod (16), a hexagonal plate is fixedly sleeved on the outer side of one end of the sleeve (17) close to the second threaded rod (16), and a circle of blocks arranged in a circular array is arranged on the end of the sleeve (17) away from the second threaded rod (16), and a conical block (18) is fixedly arranged on the end of each block away from the sleeve (17).

5. The Larsen steel sheet pile and ALC board combined structure according to claim 4 is characterized in that: The connecting seat (4) comprises a main body plate (45), an upper horizontal plate (46), a lower horizontal plate (47), and a vertical plate (48); the second threaded rod (16) is fixedly arranged on one end surface of the main body plate (45); the upper horizontal plate (46) is fixedly connected to the upper edge of the end surface of the main body plate (45) close to the second threaded rod (16), and the lower horizontal plate (47) is fixedly connected to the lower edge of the end surface of the main body plate (45) away from the second threaded rod (16); the vertical plate (48) is kept parallel to the main body plate (45), and the lower edge of the vertical plate (48) is fixedly connected to the edge of the side of the lower horizontal plate (47) away from the main body plate (45); and a pull plate (21) is fixedly arranged on the upper ends of both sides of the main body plate (45).

6. The Larsen steel sheet pile and ALC board combined structure according to claim 5, characterized in that: The lower locking assembly comprises a fixing plate (41) and a connecting plate (42); two symmetrical horizontal grooves are arranged on the upper end surface of the lower horizontal plate (47); a vertical groove is arranged on the end surface of the vertical plate (48) close to the main plate (45); the ends of the two horizontal grooves away from the main plate (45) are connected to the vertical groove; a connecting plate (42) is slidably arranged inside the two horizontal grooves, and a vertical fixing plate (41) is arranged inside the vertical groove; the ends of the two connecting plates (42) away from the main plate (45) are fixedly connected to the lower end of the fixing plate (41).

7. The Larsen steel sheet pile and ALC board combined structure according to claim 6, characterized in that: The transmission assembly comprises a spring piece (23), a latch (24), and a lever (28); three receiving grooves (22) are arranged on an end surface of the main body plate (45) away from the second threaded rod (16); a latch hole is arranged at the center of the end surface of one end of the inner side of the receiving groove (22); an arc-shaped spring piece (23) is arranged inside each receiving groove (22); the upper and lower ends of the spring piece (23) are respectively fixedly connected to the upper and lower ends inside the receiving groove (22), and the middle part of the spring piece (23) protrudes outward; a latch (24) is fixedly arranged at the center of the inner side surface of the spring piece (23), The latch pin (24) is inserted into the latch pin hole of the receiving groove (22), and two second grooves (25) are arranged on the outer cylindrical surface of the latch pin (24). A first spring (26) is fixedly arranged at one end of the inner side of each second groove (25), and a limit block (27) is fixedly arranged at one end of the outer side of the first spring (26). The two latch pins (24) on both sides are rotatably provided with a lever (28) at one end away from the spring sheet (23). The lever (28) is located on a side of the main plate (45) close to the second threaded rod (16), and the middle part of the lever (28) is hinged to the latch pin (24).

8. The Larsen steel sheet pile and ALC board combined structure according to claim 7, characterized in that: The transmission assembly further comprises a friction strip (30) and a second spring (43); a square third groove (29) is arranged inside the upper horizontal plate (46); a friction strip (30) is slidably arranged inside the third groove (29); a second spring (43) is fixedly arranged at one end of the inner side of the third groove (29); the second spring (43) is fixedly connected to the friction strip (30); two trapezoidal blocks (31) are fixedly arranged at the lower end of the friction strip (30); and a contact inclined surface is arranged on one side of the two trapezoidal blocks (31) away from the second spring (43).

9. The Larsen steel sheet pile and ALC board combined structure according to claim 8, characterized in that: The transmission assembly further comprises a push block (36), a rack (37), a one-way gear (38), a driving gear (19), a driven gear (39), and a fourth threaded rod (40); a U-shaped push block (36) is respectively sleeved on the outer sides of the lower ends of the two levers (28), and the two push blocks (36) are fixedly connected via a horizontal connecting rod; a connecting cavity is respectively provided inside the lower ends of both sides of the main plate (45), and the two connecting cavities are respectively connected to the two horizontal grooves; one end of the two push blocks (36) is respectively extended into the two connecting cavities, and a vertical gear is fixedly provided at the end of the push block (36) extending into the connecting cavity A rack (37) is provided, and a vertical third spring (44) is fixedly arranged between the lower end of the rack (37) and the bottom surface of the connecting cavity; a one-way gear (38) is rotatably arranged inside the connecting cavity, and the one-way gear (38) is meshed with the rack (37); a driving gear (19) is fixedly arranged at the axis of the one-way gear (38); a fourth threaded rod (40) is rotatably arranged inside the connecting cavity, and a driven gear (39) is fixedly sleeved on the outside of the fourth threaded rod (40), and the driven gear (39) is meshed with the driving gear (19); and the fourth threaded rods (40) inside the two connecting cavities are respectively screwed to the two connecting plates (42).

10. The Larsen steel sheet pile and ALC board combined structure according to claim 1, characterized in that: The sling comprises a jacket (32), the jacket (32) being a U-shaped plate structure with an opening facing downward, a clamping plate (34) being arranged inside the jacket (32), two threaded holes being arranged on the side wall of the jacket (32), a third threaded rod (33) being screwed inside each threaded hole, an inner end of the third threaded rod (33) being rotatably connected to the clamping plate (34), and a friction wheel (35) being fixedly arranged on an outer end of the third threaded rod (33).

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