Long steel casing recovery device and construction method thereof

Abstract

The invention discloses a long steel casing recycling device and a construction method thereof, and relates to the technical field of constructional engineering.The long steel casing recycling device comprises a rectangular piece used for being fixedly installed at the upper end of a casing body, and the radial size of a clamping part of the rectangular piece is larger than the outer diameter size of the casing body; the output end of the torsion mechanism is in transmission connection with a clamping assembly, the output end of the clamping assembly is used for clamping and fixing the clamping part of the rectangular part, and the torsion mechanism is used for driving the rectangular part to circumferentially rotate around the axis of the pile casing body through the clamping assembly; the output end of the lifting mechanism is in transmission connection with the torsion mechanism, and the lifting mechanism is used for driving the pile casing body to rotate and axially move through the torsion mechanism; by means of the torsion mechanism and the lifting mechanism, the pile casing body moves upwards while rotating, the resistance load in the recovery process is remarkably reduced, the force arm of the acting force applied to the rectangular piece by the clamping assembly is increased by means of the rectangular piece, and the acting force needed in actual operation is reduced.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, specifically relating to a long steel casing recycling device and its construction method. Background Technology

[0002] Long steel casings are large welded steel pipes used in construction engineering, mainly for the protection of the soil wall during pile foundation construction to prevent soil collapse. Specifically, in civil engineering, bored pile foundations in underwater (or soft soil) locations are constructed under the protection of long steel casings, with a reinforcing cage placed inside and concrete poured to form the pile.

[0003] According to traditional construction techniques, after the bored pile is completed, the long steel casing no longer serves a functional purpose. To reduce construction costs, the long steel casing is generally recycled. The existing recycling method involves using a cable crane. The crane's lifting head is connected to the long steel casing, and then the cable is wound up, causing the lifting head to move upwards, thus lifting the buried long steel casing in a straight line for extraction. However, using a cable-type lifting structure for recycling long steel casings is prone to uneven application of lifting force, leading to skewed upward movement. This can cause interference between the long steel casing and the external soil or the internal bored pile, increasing the probability of damage and hindering its recycling and reuse. Summary of the Invention

[0004] The purpose of this invention is to provide a simple and reasonably designed long steel casing recycling device and its construction method in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions: In a first aspect, the present invention provides a long steel casing recycling device, comprising: A rectangular component is used to be fixedly installed at the upper end of the casing body, wherein the radial dimension of the clamping part of the rectangular component is larger than the outer diameter of the casing body; A torsion mechanism is provided, the output end of which is connected to a clamping assembly. The output end of the clamping assembly is used to clamp the clamping part of the rectangular component. The torsion mechanism is used to drive the rectangular component to rotate circumferentially around the axis of the protective cylinder body through the clamping assembly. The lifting mechanism is connected to a torsion mechanism at its output end. The lifting mechanism is used to drive the casing body to rotate while simultaneously moving axially through the torsion mechanism.

[0006] As a further optimization of the present invention, the torsion mechanism includes a torsion shaft and a torsion drive assembly. The output end of the torsion drive assembly is drivenly connected to the torsion shaft, and the torsion shaft is rotatably mounted in the protective cover. The output end of the lifting mechanism is drivenly connected to the protective cover. The output end of the torsion shaft is provided with a clamping assembly, and the torsion drive assembly is used to drive the torsion shaft to reciprocate.

[0007] As a further optimization of the present invention, the torsion drive assembly includes a torsion drive component, a driving bevel gear, and a driven bevel gear. The torsion drive component is mounted on a protective cover. The output end of the torsion drive component is connected to the driving bevel gear, which meshes with the driven bevel gear. The driven bevel gear is fixedly mounted on the torsion shaft and is coaxial with the torsion shaft.

[0008] As a further optimization of the present invention, the clamping assembly includes a support, a first telescopic drive member, and a clamping plate. The output end of the torsion shaft is fixedly connected to a mounting base, and the lower end of the mounting base is fixedly connected to a support. The number of supports is consistent with the number of clamping parts of the rectangular piece. The first telescopic drive member is placed on the corresponding support. The output end of the first telescopic drive member is drivenly connected to a clamping plate, and the clamping end of the clamping plate abuts against the clamping part of the rectangular piece.

[0009] As a further optimization of the present invention, the clamping assembly further includes a second telescopic drive member, an abutment block, and an offset block. A set of supports distributed opposite to each other are respectively equipped with the second telescopic drive members, and there are two second telescopic drive members on the same support. The two second telescopic drive members are symmetrically distributed on both sides of the first telescopic drive member. The output end of the second telescopic drive member is connected to the abutment block. An offset block is provided on the clamping part of the rectangular member. The offset block is correspondingly arranged with the abutment block. Along the rotation direction of the rectangular member, the front abutment block and the offset block rub against each other, and the rear abutment block and the offset block are spaced apart.

[0010] As a further optimization of the present invention, a limiting mechanism is also included. The limiting mechanism includes a limiting block, a fourth telescopic drive member, a drive rod, a support rod, a guide block, a guide rail, a support ring, and a mounting column. The output end of the fourth telescopic drive member is drivenly connected to the drive rod, and the output end of the drive rod is drivenly connected to the support rod. A guide block is sleeved on the support rod, and the guide block is slidably connected in a first guide groove opened on the cover. One end of the support rod that passes through the first guide groove into the cover is fixedly connected to the guide rail. The support ring is slidably connected to the guide rail. A mounting column is fixedly connected to the inner side of the support ring. One end of the mounting column away from the support ring passes through a torsion shaft and is slidably engaged with the torsion shaft. One end of the mounting column that passes through the inner cavity of the torsion shaft is fixedly connected to the limiting block, and the limiting block is slidably installed in the inner cavity of the torsion shaft. A second guide groove is opened on the torsion shaft, and the mounting column is slidably engaged with the torsion shaft through the second guide groove. The sliding direction of the mounting column and the torsion shaft is consistent with the sliding direction of the guide block and the first guide groove. The rectangular component has a limiting groove at its upper end, and the lower end of the limiting block abuts against the limiting groove.

[0011] As a further optimization of the present invention, the limiting mechanism further includes a baffle, which is fixedly installed on the guide rail and located between the guide rail and the torsion shaft. The outer wall of the output end of the torsion shaft is a conical arc surface. When the limiting block moves down to the maximum displacement, the baffle rubs against the conical arc surface.

[0012] As a further optimization of the present invention, a support mechanism is also included. The support mechanism includes a support rod, a cantilever, a driven rocker arm, a main shaft, a driving rocker arm, a mounting frame, and a third telescopic drive component. The output end of the torsion shaft is fixedly connected to a support column, and the lower end of the support column is fixedly connected to the mounting frame. The output end of the third telescopic drive component is drively connected to the driving rocker arm, and the other end of the driving rocker arm is fixedly connected to the main shaft. The main shaft is rotatably mounted on the mounting frame. A driven rocker arm is also fixedly connected to the main shaft, and the other end of the driven rocker arm is fixedly connected to a cantilever. A support rod is fixedly mounted on the cantilever. The third telescopic drive components are arranged in pairs, and the support rods corresponding to the third telescopic drive components are arranged on the same side as another set of supports distributed opposite to them. When the support mechanism is in the support position, the support rod is located at the lower end of the rectangular component.

[0013] Secondly, the present invention also provides a construction method for a long steel casing recycling device, applied to the aforementioned long steel casing recycling device, the method comprising the following steps: Install the rectangular piece on the upper end of the casing body to be recycled; The rectangular piece is clamped and fixed by the clamping assembly; The clamping assembly is rotated by the torsion mechanism, which causes the rectangular part to rotate synchronously with the casing body. At the same time, the casing body moves upward while rotating under the operation of the lifting mechanism.

[0014] As a further optimization of the present invention, when the rectangular component drives the protective cylinder body to rotate, the abutment block and the offset block in front of the rectangular component in the rotation direction are rubbed together by the second telescopic drive component in the clamping assembly, while the abutment block and the offset block in the rear are spaced apart.

[0015] The present invention has at least the following beneficial effects: The present invention provides a long steel casing recycling device and its construction method. The device includes a rectangular component, a torsion mechanism and a lifting mechanism. The rectangular component is fixedly installed at the upper end of the casing body. Under the synergistic action of the torsion mechanism and the lifting mechanism, the casing body is detached from the soil in a dynamic manner of rotating and moving upward at the same time, ensuring that the casing body moves upward smoothly. Compared with the traditional recycling method of simply pulling upward, it significantly reduces the resistance load in the recycling process, greatly shortens the recycling operation time of a single casing body, and improves the overall construction efficiency. Moreover, the rectangular component and the casing body are regarded as one unit. With the radial dimension of the clamping part of the rectangular component being larger than the outer diameter of the casing body, compared with directly applying the clamping force to the side wall of the casing body, the lever arm of the force applied by the clamping component to the rectangular component is increased, and the force required in actual operation is reduced, thereby reducing the difficulty of operation. Moreover, the reciprocating rotation of the active bevel gear in the torsion mechanism causes the driven bevel gear to drive the torsion shaft to reciprocate, and the clamping assembly drives the casing body to reciprocate synchronously, rather than rotating continuously in one direction. This effectively addresses the problem of jamming caused by uneven soil layers and excessive local adhesion during the recycling process of the casing body. In addition, the clamping assembly also includes a second telescopic drive member, which drives the abutment block and the offset block to abut against each other. Along the rotation direction of the rectangular part, the front abutment block and the offset block rub against each other, and the rear abutment block and the offset block are spaced apart. This is equivalent to adding a circumferential "biting" force transmission point on the basis of radial clamping. Combined with the clamping of the rectangular part by the clamping plate, this dual force transmission design greatly improves the reliability of torque transmission. Furthermore, a support mechanism is installed above the rectangular component. The support rod in the support mechanism swings to the lower end of the rectangular component to support and protect it. This prevents the rectangular component and the casing from falling off due to misoperation during the process of lifting the casing body out of the soil, thus ensuring the safety of the device during use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is the invention Figure 1 A schematic diagram of the front structure; Figure 3 This is a schematic diagram of the torsion mechanism of the present invention; Figure 4 This is a schematic diagram of the clamping assembly of the present invention when it is in the clamping position; Figure 5 This is the invention Figure 4 A partial cross-sectional view of the clamping component from a top-down perspective; Figure 6 This is a front structural diagram of the supporting mechanism of the present invention when it is in the supporting position; Figure 7 This is a schematic diagram of the support mechanism of the present invention; Figure 8 This is a partial cross-sectional view of the limiting mechanism of the present invention; Figure 9 This is the present invention. Figure 8 Enlarged view of point A in the middle.

[0017] In the diagram: 1. Casing body; 11. Rectangular component; 12. Limiting groove; 2. Clamping assembly; 21. Mounting base; 22. Support; 23. First telescopic drive component; 24. Clamping plate; 25. Offset block; 26. Abutment block; 27. Second telescopic drive component; 3. Supporting mechanism; 31. Support rod; 32. Cantilever; 33. Driven rocker arm; 34. Main shaft; 35. Driving rocker arm; 36. Support column; 37. Third telescopic drive component; 38. Mounting bracket; 4. Torsion mechanism; 41. Torsion shaft; 42. Driven bevel gear; 43. Driving bevel gear; 44. Torsion drive component; 5. Lifting mechanism; 6. Protective cover; 7. Limiting mechanism; 71. Limiting block; 72. Fourth telescopic drive component; 73. Drive rod; 74. Support rod; 75. Guide block; 76. First guide groove; 77. Guide rail; 78. Guide block; 79. Support ring; 710. Mounting column; 711. Spring; 712. Second guide groove; 713. Baffle. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] In the description of the embodiments of this application, it should be understood that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0020] Furthermore, the terms “first,” “second,” “third,” “fourth,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0021] In one embodiment, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the present invention provides a long steel casing recycling device, comprising: Rectangular component 11 is used for fixed installation at the upper end of the casing body 1, such as... Figure 6 As shown, the lower end of the rectangular part 11 has a sleeve portion, which is sleeved on the upper end of the casing body 1, and the two are fixedly connected together by fastening bolts. The radial dimension of the clamping part of the rectangular part 11 is larger than the outer diameter of the casing body 1. The torsion mechanism 4 has a clamping assembly 2 connected to its output end. The output end of the clamping assembly 2 is used to clamp the clamping part of the rectangular piece 11. The torsion mechanism 4 is used to drive the rectangular piece 11 to rotate circumferentially around the axis of the protective cylinder body 1 through the clamping assembly 2. The lifting mechanism 5 is connected to the torsion mechanism 4 at its output end. The lifting mechanism 5 is used to drive the casing body 1 to rotate while moving axially through the torsion mechanism 4.

[0022] The torsion mechanism 4 drives the rectangular piece 11 and the casing body 1 to rotate through the clamping assembly 2. At the same time, the lifting mechanism 5 moves upward, so that the casing body 1 is dynamically separated from the soil while rotating and moving upward. Compared with the traditional method of simply pulling upward, this method can effectively break the adsorption, friction and adhesion between the outer wall of the casing body 1 and the soil, significantly reduce the resistance load during the recovery process, greatly shorten the recovery operation time of a single casing body 1, and improve the overall construction efficiency. Moreover, the rectangular piece 11 is set at the upper end of the casing body 1. At this time, the rectangular piece 11 and the casing body 1 are regarded as one unit. Since the radial dimension of the clamping part of the rectangular piece 11 is larger than the outer diameter of the casing body 1, compared with directly applying the clamping force to the side wall of the casing body 1, the lever arm of the force applied by the torsion mechanism 4 to the rectangular piece 11 through the clamping assembly 2 is increased. Under the condition that the actual required torque is the same, the actual force required in operation is reduced, thereby reducing the difficulty of operation. The specific principle is as follows: assuming that the resistance torque required to overcome for the rotation of the casing body 1 is M. 阻 The ultimate goal is to rotate the casing body 1. Therefore, the resistance torque that needs to be overcome (mainly the frictional resistance torque between the outer wall of the casing body 1 and the contact medium) is fixed and determined by the frictional force between the casing body 1 and the soil / medium. Thus, the required force F1 = M 阻 / r, where r is the radius of the casing body 1, and the actual applied rotational torque is M1=F1×r= M 阻 At this moment, the resistance torque is just overcome; In the above embodiment, by setting the rectangular member 11, the radial dimension of the clamping part of the rectangular member 11 is larger than the outer diameter of the protective sleeve body 1, that is, the effective lever arm L of the rectangular member 11 is larger than the radius r of the protective sleeve body 1, and the required force is F2=M. 阻 / L, at this point, the actual applied torque is M2=F2×L= M 阻 Similarly, it just overcomes the resistance, therefore, F2 < F1, meaning that the force required in actual operation is reduced.

[0023] For example, see [link to relevant documentation]. Figure 2 The torsion mechanism 4 includes a torsion shaft 41 and a torsion drive assembly. The output end of the torsion drive assembly is connected to the torsion shaft 41. The torsion shaft 41 is rotatably mounted in the protective cover 6. The output end of the lifting mechanism 5 is connected to the protective cover 6. The output end of the torsion shaft 41 is provided with a clamping assembly 2. The torsion drive assembly is used to drive the torsion shaft 41 to reciprocate.

[0024] Continue reading Figure 3The torsion drive assembly includes a torsion drive component 44, a driving bevel gear 43, and a driven bevel gear 42. The torsion drive component 44 is mounted on the protective cover 6. The output end of the lifting mechanism 5 is drivenly connected to the protective cover 6. The output end of the torsion drive component 44 is drivenly connected to the driving bevel gear 43. The driving bevel gear 43 meshes with the driven bevel gear 42. The driven bevel gear 42 is fixedly mounted on the torsion shaft 41 and is coaxial with the torsion shaft 41.

[0025] For example, the torsion drive 44 is a drive motor. The torsion drive 44 drives the active bevel gear 43 to reciprocate, so that the driven bevel gear 42 drives the torsion shaft 41 to reciprocate. This allows the output end of the torsion shaft 41 to pass through the reverse rotation when the casing body 1 encounters resistance in the forward rotation. Through the alternating action of "forward loosening - reverse breaking", the stubborn bonding points between the casing body 1 and the soil are gradually broken down, avoiding deformation of the casing body 1 or overload damage to the power components due to unidirectional forced rotation, and greatly improving the recovery success rate under complex geological conditions.

[0026] It should be noted that the lifting mechanism 5 is a hydraulic telescopic component or an electric telescopic component. The output end of the lifting mechanism 5 is connected to the protective cover 6. The lifting mechanism 5 drives the protective cover 6, the torsion mechanism 4, and the clamping component 2 to move up and down as a whole.

[0027] For example, see [link to relevant documentation]. Figure 4 The clamping assembly 2 includes a support 22, a first telescopic drive member 23, and a clamping plate 24. The output end of the torsion shaft 41 is fixedly connected to a mounting base 21, and the lower end of the mounting base 21 is fixedly connected to a support 22. The number of supports 22 is the same as the number of clamping parts of the rectangular member 11. The first telescopic drive member 23 is placed on the corresponding support 22. The output end of the first telescopic drive member 23 is connected to the clamping plate 24. The clamping end of the clamping plate 24 abuts against the clamping part of the rectangular member 11. Under the operation of the lifting mechanism 5, the clamping assembly 2 is moved to the top of the protective cylinder body 1 and slowly moved down to the clamping position. At this time, under the synchronous drive of multiple first telescopic drive members 23, multiple clamping plates 24 move toward the rectangular part 11 to abut against the clamping part, thereby clamping and fixing the rectangular part 11, realizing multi-directional clamping and fixing of the rectangular part 11. The surface contact between the clamping plate 24 and the clamping part allows the force applied to the rectangular part 11 by the clamping assembly 2 to be transmitted through the vertical surface of the clamping part, and will not slip along the surface, avoiding torque loss due to slippage.

[0028] For example, see [link to relevant documentation]. Figure 4 and Figure 5 The clamping assembly 2 further includes a second telescopic drive member 27, an abutment block 26, and an offset block 25, and a group of supports 22 distributed opposite to each other (to... Figure 5Taking the orientation shown as an example, a set of supports 22 (two supports 22 at the upper and lower positions) are respectively equipped with second telescopic drive members 27, and there are two second telescopic drive members 27 on the same support 22. The two second telescopic drive members 27 are symmetrically distributed on both sides of the first telescopic drive member 23 (taking the orientation shown as an example). Figure 5 Taking the indicated orientation as an example, two second telescopic drive members 27 are symmetrically distributed on the left and right sides of the first telescopic drive member 23. The output end of the second telescopic drive member 27 is connected to an abutment block 26. An offset block 25 is provided on the clamping part of the rectangular member 11. The offset block 25 is correspondingly arranged with the abutment block 26. Along the rotation direction of the rectangular member 11 (taking... Figure 5 Taking the indicated orientation as an example, if the rectangular component 11 rotates counterclockwise along the direction of the arrow, the front abutment block 26 and offset block 25 will rub against each other, while the rear abutment block 26 and offset block 25 will be spaced apart. Similarly, when the rectangular component 11 rotates counterclockwise along the direction of the arrow... Figure 5 When rotating clockwise in the indicated orientation Figure 5 The abutment relationship between the abutment block 26 and the offset block 25 is changed.

[0029] This abutment-assisted clamping with abutment block 26 and offset block 25 is equivalent to adding a circumferential "biting" force transmission point on the basis of radial clamping. This dual force transmission design greatly improves the reliability of torque transmission. Moreover, the lever arm of the clamping force on the rectangular piece 11 at the abutment position of abutment block 26 and offset block 25 is greater than the lever arm of the clamping force on the rectangular piece 11 by clamping plate 24, so as to further reduce the force required in actual operation.

[0030] For example, the first telescopic drive member 23 and the second telescopic drive member 27 are respectively hydraulic telescopic cylinders or electric telescopic cylinders, which are not limited here.

[0031] For example, see [link to relevant documentation]. Figure 8 and Figure 9The long steel casing recycling device also includes a limiting mechanism 7, which includes a limiting block 71, a fourth telescopic drive component 72, a drive rod 73, a support rod 74, a guide block 75, a guide rail 77, a support ring 79, and a mounting column 710. The output end of the fourth telescopic drive component 72 is drivenly connected to the drive rod 73, and the output end of the drive rod 73 is drivenly connected to the support rod 74. The guide block 75 is sleeved on the support rod 74 and slidably connected in the first guide groove 76 opened on the casing 6. The end of the support rod 74 that passes through the first guide groove 76 and enters the casing 6 is fixedly connected to the guide rail 77. The support ring 79... The support ring 79 is slidably connected to the guide rail 77. A mounting post 710 is fixedly connected to the inner side of the support ring 79. One end of the mounting post 710 away from the support ring 79 passes through the torsion shaft 41 and is slidably engaged with the torsion shaft 41. One end of the mounting post 710 that passes through the inner cavity of the torsion shaft 41 is fixedly connected to a limiting block 71. The limiting block 71 is slidably installed in the inner cavity of the torsion shaft 41. A second guide groove 712 is provided on the torsion shaft 41. The mounting post 710 is slidably engaged with the torsion shaft 41 through the second guide groove 712. The sliding direction of the mounting post 710 and the torsion shaft 41 is the same as the sliding direction of the guide block 75 and the first guide groove 76. The rectangular piece 11 has a limiting groove 12 at its upper end, and the lower end of the limiting block 71 abuts against the limiting groove 12.

[0032] In practical applications, the clamping assembly 2 is moved to the clamping position by the lifting mechanism 5. At this time, before the clamping plate 24 clamps and fixes the clamping assembly 2, the fourth telescopic drive member 72 can be used to drive the drive rod 73 to move the support rod 74 to move the guide block 75 down along the first guide groove 76. Then the guide rail 77 moves the support ring 79 down, so that the mounting column 710 moves the limiting block 71 down synchronously until the lower end of the limiting block 71 engages with the limiting groove 12, so that the clamping assembly 2 is centered relative to the rectangular part 11. A guide slider 78 is embedded in the guide rail 77. The guide slider 78 is located between the guide rail 77 and the support ring 79, so that when the torsion shaft 41 drives the limiting block 71 to rotate, the support ring 79 slides with the guide rail 77 to achieve the support and guidance of the guide rail 77 for the support ring 79.

[0033] It should be noted that a spring 711 is sleeved on the mounting post 710. The spring 711 is in a compressed state, and one end of the spring 711 is fixedly connected to the support ring 79, while the other end of the spring 711 is fixedly connected to the limiting block 71. This allows the mounting post 710 to be removed from the support ring 79 during disassembly, with the help of the force of the spring 711, which causes the mounting post 710 to exit from the second guide groove 712, making disassembly convenient.

[0034] It should be noted that the fourth telescopic drive component 72 is either a hydraulic telescopic cylinder or an electric telescopic cylinder, and no specific limitation is made here.

[0035] For further reference Figure 9 The limiting mechanism 7 also includes a baffle 713, which is fixedly installed on the guide rail 77 and located between the guide rail 77 and the torsion shaft 41. The outer wall of the output end of the torsion shaft 41 is a conical arc surface. When the limiting block 71 moves down to its maximum displacement, the baffle 713 rubs against the conical arc surface. The limiting of the baffle 713 causes the limiting block 71 to move down into place, ensuring the locking effect between the limiting block 71 and the limiting groove 12.

[0036] For example, see [link to relevant documentation]. Figure 6 and Figure 7 The long steel casing recycling device also includes a support mechanism 3, which includes a support rod 31, a cantilever 32, a driven swing rod 33, a main shaft 34, a driving swing rod 35, a mounting frame 38, and a third telescopic drive component 37. A support column 36 is fixedly connected to the output end of the torsion shaft 41, and the mounting frame 38 is fixedly connected to the lower end of the support column 36. The driving swing rod 35 is drively connected to the output end of the third telescopic drive component 37, and the other end of the driving swing rod 35 is fixedly connected to the main shaft 34. The main shaft 34 is rotatably mounted on the mounting frame 38. A driven swing rod 33 is also fixedly connected to the main shaft 34, and a cantilever 32 is fixedly connected to the other end of the driven swing rod 33. A support rod 31 is fixedly mounted on the cantilever 32. The third telescopic drive components 37 are arranged in pairs, with the support rod 31 corresponding to the third telescopic drive component 37 and another set of supports 22 (within a pair) distributed opposite to it. Figure 5 Taking the orientation shown as an example, another set of supports 22 consists of two supports 22 distributed on the left and right sides, which are set on the same side. When the supporting mechanism 3 is in the supporting position, the supporting rod 31 is located at the lower end of the rectangular piece 11.

[0037] like Figure 6 As shown, after the clamping assembly 2 is in the clamping position, the third telescopic drive 37 is activated to drive the active rocker arm 35 to rotate around the main shaft 34, so as to... Figure 6 Taking the active swing arm 35 on the left as an example, when the active swing arm 35 rotates counterclockwise, the main shaft 34 drives the driven swing arm 33 to rotate counterclockwise synchronously, thereby causing the support rod 31 to swing counterclockwise to the bottom of the rectangular part 11. Under the drive of another third telescopic drive member 37, the support rod 31 on the right swings clockwise to the bottom of the rectangular part 11, so as to support and protect the rectangular part 11. This prevents the clamping component 2 from releasing the rectangular part 11 and the rectangular part 1 and the casing body 1 from falling off due to misoperation during the process of the casing body 1 being lifted out of the soil, thus ensuring the safety of the device during use.

[0038] It should be noted that the third telescopic drive component 37 is a hydraulic telescopic cylinder or an electric telescopic cylinder, which is not limited here, and the support rod 31 can be replaced with a support plate as needed.

[0039] It should be noted that the lower end of the limiting block 71 can be moved down into the limiting groove 12 from the gap of the mounting bracket 38.

[0040] In another embodiment, the present invention also provides a construction method for a long steel casing recycling device, applied to the above-mentioned long steel casing recycling device, the method comprising the following steps: Install the rectangular piece 11 on the upper end of the casing body 1 to be recycled; The clamping part of the rectangular piece 11 is clamped and fixed by the clamping assembly 2; The clamping assembly 2 is rotated by the torsion mechanism 4, which causes the rectangular piece 11 to rotate synchronously with the casing body 1. At the same time, under the operation of the lifting mechanism 5, the casing body 1 moves upward while rotating.

[0041] When the rectangular component 11 drives the protective cylinder body 1 to rotate, the abutment block 26 and the offset block 25 in front of the rectangular component 11 are rubbed together by the second telescopic drive component 27 in the clamping assembly 2, while the abutment block 26 and the offset block 25 in the rear are spaced apart.

[0042] It should be noted that, in use, the rectangular component 11 is fixedly installed on the upper end of the casing body 1 to be lifted, and the rectangular component 11 and the casing body 1 are regarded as one unit. With the help of the lifting mechanism 5, the protective cover 6 and the torsion mechanism 4, the support mechanism 3, the clamping assembly 2 and the limiting mechanism 7 set on the protective cover 6 are moved as a whole to the top of the protective cylinder body 1 to be lifted. At this time, under the drive of the lifting mechanism 5, the protective cover 6 moves down until the clamping assembly 2 is in the clamping position. At this time, the fourth telescopic drive member 72 is activated first. The fourth telescopic drive member 72 drives the drive rod 73, so that the support rod 74 drives the guide block 75 to move down along the first guide groove 76. Then the guide rail 77 drives the support ring 79 to move down, so that the mounting column 710 drives the limiting block 71 to move down synchronously until the lower end of the limiting block 71 engages with the limiting groove 12, so that the clamping assembly 2 is centered relative to the rectangular part 11. Then, multiple first telescopic drive members 23 are activated, and each of the multiple first telescopic drive members 23 drives its respective clamping plate 24 to move toward the rectangular member 11 until it abuts against the clamping part, clamping and fixing the rectangular member 11; and, the third telescopic drive member 37 is activated, and the active swing rod 35 drives the driven swing rod 33 to swing synchronously through the main shaft 34, so that the support rod 31 swings to the bottom of the rectangular member 11, so as to achieve support and protection for the rectangular member 11; Next, the torsion drive 44 is activated, and under the meshing transmission of the driving bevel gear 43 and the driven bevel gear 42, the torsion shaft 41 is rotated, thereby realizing the rotation of the protective cylinder body 1. The lifting mechanism 5 drives the protective cover 6 to move upward, so that the protective cylinder body 1 moves upward while rotating. Moreover, when the rectangular member 11 drives the protective cylinder body 1 to rotate, the front abutting block 26 and the offset block 25 rub against each other along the rotation direction of the rectangular member 11, and the rear abutting block 26 and the offset block 25 are spaced apart.

[0043] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A long steel casing recovery device, characterized in that, The utility model relates to a kind of rectangular piece (11), for fixed installation in the upper end position of casing body (1), wherein the radial dimension of the clamping part of rectangular piece (11) is greater than the outer diameter dimension of casing body (1);Torsion mechanism (4), the output end of the torsion mechanism (4) is drivingly connected with clamping assembly (2), and the output end of clamping assembly (2) is used to clamp the clamping part of rectangular piece (11), and the torsion mechanism (4) is used to drive rectangular piece (11) to rotate around the axis of casing body (1) by clamping assembly (2);Lifting mechanism (5), the output end of the lifting mechanism (5) is drivingly connected torsion mechanism (4), and the lifting mechanism (5) is used to drive casing body (1) to rotate while moving axially by torsion mechanism (4). The torsion mechanism (4) includes a torsion shaft (41) and a torsion drive assembly, the output end of the torsion drive assembly is drivingly connected with the torsion shaft (41), the torsion shaft (41) is rotatably installed in a housing (6), the output end of the lifting mechanism (5) is drivingly connected on the housing (6), and the output end of the torsion shaft (41) is provided with the clamping assembly (2), and the torsion drive assembly is used to drive the torsion shaft (41) to reciprocatingly rotate. The torsion drive assembly includes a torsion drive member (44), a driving bevel gear (43) and a driven bevel gear (42), the torsion drive member (44) is installed on the housing (6), the output end of the torsion drive member (44) is drivingly connected with the driving bevel gear (43), the driving bevel gear (43) is drivingly connected with the driven bevel gear (42), the driven bevel gear (42) is fixedly installed on the torsion shaft (41), and the driven bevel gear (42) is coaxially arranged with the torsion shaft (41). The clamping assembly (2) includes a support (22), a first telescopic drive member (23) and a clamping plate (24), the output end of the torsion shaft (41) is fixedly connected with a mounting seat (21), the lower end of the mounting seat (21) is fixedly connected with the support (22), the number of the support (22) is consistent with the number of the clamping part of the rectangular piece (11), the first telescopic drive member (23) is arranged on the corresponding support (22), the output end of the first telescopic drive member (23) is drivingly connected with the clamping plate (24), and the clamping end of the clamping plate (24) is abuttingly connected with the clamping part of the rectangular piece (11).

2. A long steel casing retrieval device according to claim 1, wherein, ​ 3. A long steel casing retrieval device according to claim 2, wherein, ​ 4. A long steel casing retrieval device according to claim 2, wherein, ​ 5. A long steel casing retrieval device according to claim 4, wherein, The clamping assembly (2) further comprises a second telescopic driving element (27), an abutting block (26) and a biasing block (25), a group of the abutting blocks (26) are arranged on the relative distribution of a group of the supports (22) respectively, and the number of the second telescopic driving elements (27) on the same support (22) is two, the two second telescopic driving elements (27) are symmetrically distributed on the two sides of the first telescopic driving element (23), the output end of the second telescopic driving element (27) is in transmission connection with the abutting block (26), the biasing block (25) is arranged on the clamping part of the rectangular element (11), the biasing block (25) is arranged correspondingly with the abutting block (26), and the abutting block (26) and the biasing block (25) in front are in frictional abutment along the rotating direction of the rectangular element (11), and the abutting block (26) and the biasing block (25) in the rear are arranged at intervals.

6. A long steel casing retrieval device according to claim 5, wherein, Further comprising a limiting mechanism (7), the limiting mechanism (7) comprises a limiting block (71), a fourth telescopic driving element (72), a driving rod (73), a supporting rod (74), a guide block (75), a guide rail (77), a supporting ring (79) and a mounting column (710), the output end of the fourth telescopic driving element (72) is in transmission connection with the driving rod (73), the output end of the driving rod (73) is in transmission connection with the supporting rod (74), the supporting rod (74) is sleeved with the guide block (75), the guide block (75) is in sliding connection in the first guide groove (76) formed on the shroud (6), one end of the supporting rod (74) penetrating through the first guide groove (76) into the shroud (6) is fixedly connected with the guide rail (77), the supporting ring (79) is in sliding connection with the guide rail (77), the inner side of the supporting ring (79) is fixedly connected with the mounting column (710), one end of the mounting column (710) away from the supporting ring (79) penetrates through the torsion shaft (41) and is in sliding fit with the torsion shaft (41), one end of the mounting column (710) penetrating into the inner cavity of the torsion shaft (41) is fixedly connected with the limiting block (71), and the limiting block (71) is slidingly installed in the inner cavity of the torsion shaft (41), wherein a second guide groove (712) is formed in the torsion shaft (41), the mounting column (710) is in sliding fit with the torsion shaft (41) through the second guide groove (712), and the sliding directions of the mounting column (710) and the torsion shaft (41) and the sliding direction of the guide block (75) and the first guide groove (76) are consistent; Wherein, a limiting groove (12) is formed in the upper end of the rectangular element (11), and the lower end of the limiting block (71) is in abutting fit with the limiting groove (12).

7. A long steel casing retrieval device according to claim 6, wherein, The limiting mechanism (7) further comprises a baffle (713), the baffle (713) is fixedly installed on the guide rail (77), and the baffle (713) is located between the guide rail (77) and the torsion shaft (41), wherein the outer side wall of the output end of the torsion shaft (41) is a conical arc surface, when the limiting block (71) moves downward to the maximum displacement, the baffle (713) is in frictional abutment with the conical arc surface.

8. A long steel casing retrieval device according to claim 7, wherein, Also include a supporting and connecting mechanism (3), the supporting and connecting mechanism (3) includes a supporting rod (31), a cantilever (32), a driven swing rod (33), a main shaft (34), a driving swing rod (35), a mounting frame (38) and a third telescopic driving part (37), the output end of the torsion shaft (41) is fixedly connected with a support column (36), the lower end of the support column (36) is fixedly connected with the mounting frame (38), the output end of the third telescopic driving part (37) is drivingly connected with the driving swing rod (35), the other end of the driving swing rod (35) is fixedly connected to the main shaft (34), the main shaft (34) is rotatably installed on the mounting frame (38), the main shaft (34) is also fixedly connected with the driven swing rod (33), the other end of the driven swing rod (33) is fixedly connected with the cantilever (32), the cantilever (32) is fixedly installed with the supporting rod (31), the third telescopic driving part (37) is provided in pairs, the supporting rod (31) corresponding to the third telescopic driving part (37) is arranged on the same side of the other group of supports (22) distributed oppositely, when the supporting and connecting mechanism (3) is located at the supporting and connecting position, the supporting rod (31) is located at the lower end of the rectangular piece (11).

9. A construction method of a long steel casing recovery device, characterized by, The method is applied to the long steel casing recovery device of claim 8, and comprises the following steps: installing the rectangular piece (11) on the upper end of the casing body (1) to be recovered; clamping and fixing the clamping part of the rectangular piece (11) through the clamping assembly (2); driving the clamping assembly (2) to rotate through the torsion mechanism (4), so that the rectangular piece (11) drives the casing body (1) to rotate synchronously, and at the same time, under the operation of the lifting mechanism (5), the casing body (1) rotates and moves upward at the same time.

10. The construction method of a long steel casing recovery device according to claim 9, characterized in that, When the rectangular piece (11) drives the casing body (1) to rotate, the abutting block (26) and the offset block (25) in front of the rotating direction of the rectangular piece (11) are frictionally abutted through the driving of the second telescopic driving part (27) in the clamping assembly (2), and the abutting block (26) and the offset block (25) in the rear are arranged in a spaced manner.

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