Steel casing jacking device

Abstract

The utility model relates to the technical field of pile foundation construction, and discloses a steel casing jacking device which comprises a supporting plate, a steel casing, a bent plate, a rectangular sleeve, a bolt, a nut and a driving part. In the using process, the first bent parts of the bent plates on the two sides are arranged in the through holes in the two sides in a penetrating mode respectively, and the rectangular sleeve is arranged behind the first bent parts of the bent plates on the two sides in a sleeving mode. Bolts are arranged in the strip-shaped holes and the round holes in the two sides in a penetrating mode respectively, nuts are connected to the bolts on the two sides in a threaded mode respectively, and then the bent plates on the two sides can be connected and fixed. And then the driving piece is controlled to work to drive the third bending parts on the two sides to move relative to the supporting plate. Under the driving of the second bending parts on the two sides, the first bending parts on the two sides can jack the steel casing, and longitudinal jacking movement is achieved. Due to the fact that the rectangular sleeve and the bent plates on the two sides are connected and fixed through the bolts and the nuts, the steel casing jacking device has the advantages of being stable in connection and convenient to disassemble, and therefore the steel casing jacking device can be repeatedly used when other steel casings are jacked.

Description

Technical Field

[0001] The present application relates to the technical field of pile foundation construction, for example, to a steel casing lifting device. Background Art

[0002] At present, how to lift and remove the steel casing after the pile foundation is constructed is a major difficulty in the project. The related technology (Announcement No.: CN219430753U) discloses a steel casing lifting device for lifting and removing the steel casing, including steel plate lattice piles distributed on the outer surface of the steel casing, and the steel plate lattice piles are set deep underground; a lifting bracket fixedly connected to the outer wall of the steel casing is set, which includes a first longitudinal beam and a second longitudinal beam fixedly connected to the opposite sides of the outer wall of the steel casing, and a cross beam fixedly connected to the top of the first longitudinal beam and the top of the second longitudinal beam at both ends; a first longitudinal lifting structure and a second longitudinal lifting structure fixedly connected to the first longitudinal beam and the second longitudinal beam respectively; when the longitudinal lifting structure is lifted upward, the lifting bracket is driven to rise, thereby driving the steel casing to lift upward.

[0003] In the process of implementing the above embodiments, it is found that there are at least the following problems in the related art:

[0004] During use, after the first longitudinal beam and the second longitudinal beam of the lifting bracket are fixedly connected to the opposite sides of the outer wall of the steel casing, the longitudinal lifting movement can be realized through the first longitudinal lifting structure and the second longitudinal lifting structure. Since the first longitudinal beam and the second longitudinal beam of the lifting bracket are fixedly connected to the outer wall of the steel casing, it is not convenient to separate the lifting bracket from the steel casing. Therefore, it is not convenient to reuse when lifting other steel casings.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The disclosed embodiment provides a steel casing lifting device to facilitate longitudinal lifting movement.

[0008] In some embodiments, the steel casing lifting device comprises: a support plate, the support plate comprises a notch; a steel casing, located inside the notch, the steel casing comprises a through hole, and the through holes are located on both sides of the steel casing along the radial direction of the steel casing; a bending plate, located on both sides of the steel casing along the radial direction of the steel casing, the bending plates on both sides each comprise a first bending portion, a second bending portion connected to the first bending portion, and a third bending portion connected to the second bending portion, the first bending portions on both sides each comprise a circular hole and are respectively penetrated by the through holes on both sides, and the planes where the second bending portions on both sides are located are mutually interlocked. Parallel and both located outside the steel casing, the planes where the third bending parts on both sides are located overlap with each other and are both parallel to the planes where the support plates are located; a rectangular sleeve is located inside the steel casing and is sleeved on the first bending parts on both sides, the rectangular sleeve includes strip holes; bolts are respectively passed through the strip holes and the round holes on both sides; nuts are respectively threadedly connected to the bolts on both sides; a driving member is installed between the support plate and the opposite surfaces of the third bending parts on both sides, for providing driving force; wherein, under the drive of the driving member, the spacing between the support plate and the third bending parts on both sides changes.

[0009] Optionally, the driving member includes: a support cylinder, which is installed on the support plate along the axial direction of the steel casing and is located on both sides of the steel casing along the radial direction of the steel casing, and the support cylinders on both sides include slots; circular racks, which are slidably installed inside the support cylinders on both sides; a top plate, which is respectively connected to the circular racks on both sides and respectively abuts against the third bending parts on both sides; a first gear, which is respectively located at the slots on both sides and is respectively meshed with the teeth of the circular racks on both sides; wherein the first gears on both sides can be rotated in a controlled manner to drive the circular racks on both sides to perform linear motion.

[0010] Optionally, the driving member also includes: a seat bearing, which is installed on the support plate and is adjacent to the support cylinders on both sides; a rotating shaft, which is installed inside the seat bearings on both sides, and the first gears on both sides are installed on the rotating shafts on both sides; wherein the rotating shafts on both sides can be controlled to rotate to drive the first gears on both sides to rotate.

[0011] Optionally, the driving member further includes: a second gear, respectively mounted on the rotating shafts on both sides; and a common rack, meshingly connected with the teeth of the second gears on both sides; wherein the common rack can be moved in a controlled manner to drive the second gears on both sides to rotate.

[0012] Optionally, the driving member also includes: a first support, mounted on the support plate and close to the end of the ordinary rack; a hydraulic cylinder, mounted on the first support, and the moving end of the hydraulic cylinder is connected to the end of the ordinary rack; wherein, under the drive of the hydraulic cylinder, the ordinary rack performs linear motion.

[0013] Optionally, the driving member further includes: second supports, evenly mounted on the support plate along the length direction of the common rack; and rollers, respectively mounted on each of the second supports and abutting against the common rack.

[0014] Optionally, the driving member further includes: a metal bushing, which is respectively installed between the support cylinders on both sides and the circular racks on both sides.

[0015] Optionally, it further includes: a first reinforcing plate, which is respectively fixed to the connection between the first bending parts on both sides and the second bending parts on both sides.

[0016] Optionally, it further includes: a second reinforcing plate, which is respectively fixed to the connection between the second bending parts on both sides and the third bending parts on both sides.

[0017] The steel casing lifting device provided in the embodiment of the present disclosure can achieve the following technical effects:

[0018] The embodiment of the present disclosure provides a steel casing lifting device, comprising a support plate, a steel casing, a bending plate, a rectangular sleeve, a bolt, a nut and a driving member. The support plate is used to support the entire device, and the notch of the support plate is used to accommodate the steel casing. The steel casing includes through holes, which are located on both sides of the steel casing along the radial direction of the steel casing, and the through holes on both sides are used to pass the bending plate. The bending plates are located on both sides of the steel casing along the radial direction of the steel casing, and are used to drive the steel casing to move. The bending plates on both sides include a first bending portion, a second bending portion connected to the first bending portion, and a third bending portion connected to the second bending portion. The first bending portions on both sides include circular holes and are respectively penetrated through the through holes on both sides. When the first bending portions on both sides are respectively penetrated through the through holes on both sides, the through holes on both sides are located inside the steel casing for passing bolts. The planes where the second bending portions on both sides are located are parallel to each other and are both located outside the steel casing, which are used to adjust the distance between the third bending portion and the first bending portion on the same side. The planes where the third bending parts on both sides are located overlap with each other and are parallel to the planes where the support plates are located, and are used to abut against the driving member. The rectangular sleeve is located inside the steel casing and is sleeved on the first bending parts on both sides to connect the first bending parts on both sides. The rectangular sleeve includes a strip hole, and the strip hole is used to pass bolts. The bolts are respectively inserted into the strip hole and the round holes on both sides, and the nuts are respectively threadedly connected to the bolts on both sides to connect and fix the rectangular sleeve and the first bending parts on both sides. The driving member is installed between the supporting plate and the opposite surfaces of the third bending parts on both sides, and is used to provide a driving force to drive the third bending parts on both sides to move relative to the supporting plate, thereby changing the distance between the supporting plate and the third bending parts on both sides.

[0019] During use, the first bending parts of the bending plates on both sides are respectively inserted into the through holes on both sides, and the rectangular sleeve is put on the first bending parts of the bending plates on both sides. Bolts are respectively inserted into the strip holes and the round holes on both sides, and nuts are respectively threadedly connected to the bolts on both sides, so that the bending plates on both sides can be connected and fixed. Then the driving member is controlled to work, so that the third bending parts on both sides can be driven to move relative to the support plate. Driven by the second bending parts on both sides, the first bending parts on both sides can lift the steel casing to achieve longitudinal lifting movement. Since the rectangular sleeve is connected and fixed with the bending plates on both sides by bolts and nuts, it has the advantages of stable connection and convenient disassembly, so it is easy to reuse when lifting other steel casings. In addition, since the rectangular sleeve adopts the design of strip holes, the spacing between the bending plates on both sides can be adjusted, and it can be suitable for steel casings of different diameters.

[0020] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0022] Figure 1 It is a schematic cross-sectional structure diagram of a steel casing lifting device provided in an embodiment of the present disclosure;

[0023] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 3 It is a schematic diagram of the main structure of a steel casing lifting device provided by an embodiment of the present disclosure;

[0025] Figure 4 It is a schematic diagram of the top view of the structure of a steel casing jacking device provided in an embodiment of the present disclosure.

[0026] Reference numerals:

[0027] 1: Support plate; 2: Steel casing; 3: Bending plate; 31: First bending part; 32: Second bending part; 33: Third bending part; 4: Rectangular sleeve; 5: Bolt; 6: Nut; 7: Support tube; 8: Circular rack; 9: Top plate; 10: First gear; 11: Bearing with seat; 12: Rotating shaft; 13: Second gear; 14: Ordinary rack; 15: First support; 16: Hydraulic cylinder; 17: Second support; 18: Roller; 19: Metal sleeve. DETAILED DESCRIPTION

[0028] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0029] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0030] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0031] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0032] Unless otherwise stated, the term "plurality" means two or more.

[0033] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0034] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0036] Combination Figures 1 to 4As shown, the embodiment of the present disclosure provides a steel casing 2 lifting device, including a support plate 1, a steel casing 2, a bending plate 3, a rectangular sleeve 4, a bolt 5, a nut 6 and a driving member. The support plate 1 includes a notch. The steel casing 2 is located inside the notch, and the steel casing 2 includes a through hole, and the through hole is located on both sides of the steel casing 2 along the radial direction of the steel casing 2. The bending plate 3 is located on both sides of the steel casing 2 along the radial direction of the steel casing 2, and the bending plates 3 on both sides include a first bending portion 31, a second bending portion 32 connected to the first bending portion 31, and a third bending portion 33 connected to the second bending portion 32. The first bending portions 31 on both sides include circular holes and are respectively penetrated through the through holes on both sides. The planes where the second bending portions 32 on both sides are parallel to each other and are both located outside the steel casing 2. The planes where the third bending portions 33 on both sides are overlapped with each other and are both parallel to the plane where the support plate 1 is located. The rectangular sleeve 4 is located inside the steel casing 2 and is sleeved on the first bending parts 31 on both sides. The rectangular sleeve 4 includes a strip hole. Bolts 5 are respectively inserted into the strip hole and the round holes on both sides. Nuts 6 are respectively threadedly connected to the bolts 5 on both sides. The driving member is installed between the supporting plate 1 and the opposite surfaces of the third bending parts 33 on both sides to provide driving force. Among them, under the driving of the driving member, the spacing between the supporting plate 1 and the third bending parts 33 on both sides changes.

[0037] The embodiment of the present disclosure provides a steel casing 2 lifting device, comprising a support plate 1, a steel casing 2, a bending plate 3, a rectangular sleeve 4, a bolt 5, a nut 6 and a driving member. The support plate 1 is used to support the entire device, and the notch of the support plate 1 is used to accommodate the steel casing 2. The steel casing 2 includes through holes, which are located on both sides of the steel casing 2 along the radial direction of the steel casing 2, and the through holes on both sides are used to pass the bending plate 3. The bending plate 3 is located on both sides of the steel casing 2 along the radial direction of the steel casing 2, and is used to drive the steel casing 2 to move. The bending plates 3 on both sides each include a first bending portion 31, a second bending portion 32 connected to the first bending portion 31, and a third bending portion 33 connected to the second bending portion 32. The first bending portions 31 on both sides each include a circular hole and are respectively penetrated through the through holes on both sides. When the first bending portions 31 on both sides are respectively penetrated through the through holes on both sides, the through holes on both sides are located inside the steel casing 2 for passing the bolts 5. The planes where the second bending parts 32 on both sides are located are parallel to each other and are both located outside the steel casing 2, and are used to adjust the distance between the third bending part 33 and the first bending part 31 on the same side. The planes where the third bending parts 33 on both sides are located overlap with each other and are both parallel to the plane where the support plate 1 is located, and are used to abut against the driving member. The rectangular sleeve 4 is located inside the steel casing 2 and is sleeved on the first bending parts 31 on both sides to connect the first bending parts 31 on both sides. The rectangular sleeve 4 includes a strip hole, and the strip hole is used to pass the bolt 5. The bolt 5 is respectively penetrated through the strip hole and the round holes on both sides, and the nut 6 is respectively threadedly connected to the bolt 5 on both sides to connect and fix the rectangular sleeve 4 and the first bending parts 31 on both sides. The driving member is installed between the support plate 1 and the opposite surface of the third bending parts 33 on both sides, and is used to provide a driving force to drive the third bending parts 33 on both sides to move relative to the support plate 1, thereby changing the distance between the support plate 1 and the third bending parts 33 on both sides.

[0038] During use, the first bending parts 31 of the bending plates 3 on both sides are respectively inserted into the through holes on both sides, and the rectangular sleeve 4 is sleeved on the first bending parts 31 of the bending plates 3 on both sides. Bolts 5 are respectively inserted into the strip holes and the round holes on both sides, and nuts 6 are respectively threadedly connected to the bolts 5 on both sides, so that the bending plates 3 on both sides can be connected and fixed. Then the driving member is controlled to work, and the third bending parts 33 on both sides can be driven to move relative to the support plate 1. Driven by the second bending parts 32 on both sides, the first bending parts 31 on both sides can lift the steel casing 2 to achieve longitudinal lifting movement. Since the bolts 5 and nuts 6 are used to connect and fix the rectangular sleeve 4 with the bending plates 3 on both sides, it has the advantages of stable connection and convenient disassembly, so it is easy to reuse when lifting other steel casings 2. In addition, since the rectangular sleeve 4 adopts the design of strip holes, the spacing between the bending plates 3 on both sides can be adjusted, which can be used for steel casings 2 of different diameters.

[0039] Optionally, combined Figure 1 , Figure 3 and Figure 4As shown, the driving member includes a support cylinder 7, a circular rack 8, a top plate 9 and a first gear 10. The support cylinder 7 is installed on the support plate 1 along the axial direction of the steel casing 2, and is located on both sides of the steel casing 2 along the radial direction of the steel casing 2. The support cylinders 7 on both sides include notches. The circular racks 8 are slidably installed inside the support cylinders 7 on both sides. The top plates 9 are respectively connected to the circular racks 8 on both sides, and are respectively abutted against the third bending portions 33 on both sides. The first gears 10 are respectively located at the notches on both sides, and are respectively meshed with the teeth of the circular racks 8 on both sides. Among them, the first gears 10 on both sides can be controlled to rotate to drive the circular racks 8 on both sides to make linear motion.

[0040] In the disclosed embodiment, the driving member includes a support tube 7, a circular rack 8, a top plate 9 and a first gear 10. The steel casings 2 on both sides are used to support and install the slidable circular rack 8, and the notches of the support tubes 7 on both sides are used for the meshing teeth of the first gear 10, so as to be able to mesh with the meshing teeth of the circular rack 8. The circular rack 8 is slidably installed inside the support tubes 7 on both sides, and can move relative to the steel casings 2 on both sides. The top plate 9 is respectively connected to the circular racks 8 on both sides, and is used to abut against the third bending portion 33 on both sides. The first gear 10 is respectively located at the notches on both sides, and is respectively meshed with the teeth of the circular racks 8 on both sides, and is used to convert the rotational motion into a linear motion. During use, under the drive of external force, when the first gears 10 on both sides perform rotational motion, the circular racks 8 on both sides can be driven to perform linear motion through the meshing action between the teeth. Then the top plates 9 on both sides are driven to move, and finally the bending plates 3 on both sides are lifted.

[0041] Optionally, combined Figure 1 and Figure 4 As shown, the driving member further includes a seat bearing 11 and a rotating shaft 12. The seat bearing 11 is mounted on the support plate 1 and is adjacent to the support cylinders 7 on both sides. The rotating shaft 12 is respectively mounted inside the seat bearings 11 on both sides, and the first gears 10 on both sides are respectively mounted on the rotating shafts 12 on both sides. The rotating shafts 12 on both sides can be controlled to rotate to drive the first gears 10 on both sides to rotate.

[0042] In the disclosed embodiment, the driving member further includes a seat bearing 11 and a rotating shaft 12. The seat bearings 11 on both sides are used to support and install the rotating shaft 12, and enable the rotating shaft 12 to perform rotational motion. The rotating shafts 12 on both sides are respectively used to support and install the first gears 10 on both sides, and drive the first gears 10 on both sides to perform rotational motion. During use, under the drive of external force, the rotating shafts 12 on both sides can perform rotational motion, thereby driving the first gears 10 on both sides to rotate, and finally the bending plates 3 on both sides can be lifted.

[0043] Optionally, combined Figure 1 and Figure 4As shown, the driving member also includes a second gear 13 and a common rack 14. The second gear 13 is respectively mounted on the two side shafts 12. The common rack 14 is meshed with the teeth of the second gears 13 on both sides. The common rack 14 can be controlled to move to drive the second gears 13 on both sides to rotate.

[0044] In the disclosed embodiment, the driving member further includes a second gear 13 and a common rack 14. The second gears 13 on both sides are respectively installed on the rotating shafts 12 on both sides, and are used to drive the rotating shafts 12 on both sides to rotate. The common rack 14 is meshed with the second gears 13 on both sides, and is used to convert linear motion into rotational motion. During use, the common rack 14 can move under the drive of external force. Through the meshing action between the teeth, the second gears 13 on both sides can be driven to rotate, and finally the bending plates 3 on both sides can be lifted.

[0045] Optionally, combined Figure 1 and Figure 4 As shown, the driving member further includes a first support 15 and a hydraulic cylinder 16. The first support 15 is mounted on the support plate 1 and is close to the end of the common rack 14. The hydraulic cylinder 16 is mounted on the first support 15, and the moving end of the hydraulic cylinder 16 is connected to the end of the common rack 14. Wherein, under the drive of the hydraulic cylinder 16, the common rack 14 performs linear motion.

[0046] In the disclosed embodiment, the driving member further includes a first support 15 and a hydraulic cylinder 16. The first support 15 is mounted on the support plate 1, and is used to support and install the hydraulic cylinder 16. The moving end of the hydraulic cylinder 16 is connected to the ordinary rack 14, and is used to drive the ordinary rack 14 to move. During use, the hydraulic cylinder 16 is controlled to work, so that the ordinary rack 14 can be driven to move, and finally the bending plates 3 on both sides can be lifted. In addition, the bending plates 3 on both sides are driven to move by a single hydraulic cylinder 16, so that the bending plates 3 on both sides can be moved synchronously. In this way, both sides of the steel casing 2 are simultaneously subjected to an upward lifting force, which facilitates the faster loosening of the steel casing 2.

[0047] Optionally, combined Figure 1 As shown, the driving member further includes a second support 17 and a roller 18. The second support 17 is evenly mounted on the support plate 1 along the length direction of the common rack 14. The roller 18 is respectively mounted on each second support 17 and abuts against the common rack 14.

[0048] In the disclosed embodiment, the driving member further includes a second support 17 and a roller 18. The second support 17 is evenly mounted on the support plate 1, and is used to support and install the roller 18. The plurality of rollers 18 are used to abut against the ordinary rack 14 to improve the stability of the ordinary rack 14 when it moves, and reduce the radial force on the moving end of the hydraulic cylinder 16.

[0049] Optionally, combined Figure 1 and Figure 2 As shown, the driving member further comprises a metal sleeve 19. The metal sleeve 19 is respectively installed between the support cylinders 7 on both sides and the circular racks 8 on both sides.

[0050] In the disclosed embodiment, the driving member further includes a metal sleeve 19 respectively installed between the two side support cylinders 7 and the two side circular racks 8. The metal sleeve 19 is used to reduce the friction between the two side support cylinders 7 and the two side circular racks 8, and to improve the accuracy of the two side circular racks 8 when moving relative to the two side support cylinders 7.

[0051] Optionally, combined Figure 1 and Figure 4 As shown, a first reinforcing plate is also included. The first reinforcing plate is respectively fixed to the connection between the first bending portions 31 on both sides and the second bending portions 32 on both sides.

[0052] In the embodiment of the present disclosure, a first reinforcing plate is further included, which is respectively fixed to the connection between the first bending portion 31 on both sides and the second bending portion 32 on both sides. The first reinforcing plate is used to improve the connection strength to prevent the connection between the first bending portion 31 on both sides and the second bending portion 32 on both sides from being broken or deformed under the action of external force.

[0053] Optionally, combined Figure 1 As shown, a second reinforcing plate is also included. The second reinforcing plate is respectively fixed to the connection between the second bending portions 32 on both sides and the third bending portions 33 on both sides.

[0054] In the embodiment of the present disclosure, second reinforcing plates are further included, which are respectively fixed at the connection between the second bending portions 32 on both sides and the third bending portions 33 on both sides. The second reinforcing plates are used to improve the connection strength to prevent the connection between the second bending portions 32 on both sides and the third bending portions 33 on both sides from being broken or deformed under the action of external force.

[0055] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A steel casing lifting device, characterized in that: include: A support plate, the support plate comprising a notch; A steel casing is located inside the notch, the steel casing comprises through holes, and the through holes are located on both sides of the steel casing along the radial direction of the steel casing; A bending plate is located on both sides of the steel casing along the radial direction of the steel casing, the bending plates on both sides include a first bending portion, a second bending portion connected to the first bending portion, and a third bending portion connected to the second bending portion, the first bending portions on both sides include circular holes and are respectively penetrated through the through holes on both sides, the planes where the second bending portions on both sides are located are parallel to each other and are both located outside the steel casing, and the planes where the third bending portions on both sides are located overlap with each other and are both parallel to the plane where the support plate is located; A rectangular sleeve, located inside the steel casing and sleeved on the first bending parts on both sides, the rectangular sleeve comprising a strip-shaped hole; Bolts are respectively inserted into the strip-shaped hole and the circular holes on both sides; Nuts, respectively threadedly connected to the bolts on both sides; A driving member, installed between the supporting plate and the opposite surfaces of the third bending parts on both sides, for providing a driving force; Wherein, under the driving of the driving member, the distance between the support plate and the third bending portions on both sides changes.

2. A steel casing lifting device according to claim 1, characterized in that: The driving member comprises: A support tube is installed on the support plate along the axial direction of the steel casing and is located on both sides of the steel casing along the radial direction of the steel casing, and the support tubes on both sides include notches; Circular racks are slidably mounted inside the support tubes on both sides; A top plate, connected to the circular racks on both sides, and respectively abutting against the third bending portions on both sides; The first gear is located at the notches on both sides and is meshed with the circular rack teeth on both sides; Wherein, the first gears on both sides can be controlled to rotate to drive the circular racks on both sides to perform linear motion.

3. A steel casing lifting device according to claim 2, characterized in that: The driving member also includes: A seat bearing is installed on the support plate and is adjacent to the support cylinders on both sides; The rotating shafts are respectively installed inside the seat bearings on both sides, and the first gears on both sides are respectively installed on the rotating shafts on both sides; Wherein, the rotating shafts on both sides can be controlled to rotate to drive the first gears on both sides to perform rotational motion.

4. A steel casing lifting device according to claim 3, characterized in that: The driving member also includes: The second gear is respectively installed on the rotating shaft at both sides; A common rack meshing with the teeth of the second gears on both sides; Wherein, the common rack can be moved in a controlled manner to drive the second gears on both sides to perform rotational motion.

5. A steel casing lifting device according to claim 4, characterized in that: The driving member also includes: A first support, mounted on the support plate and close to the end of the common rack; A hydraulic cylinder is mounted on the first support, and a movable end of the hydraulic cylinder is connected to an end of the common rack; Wherein, under the drive of the hydraulic cylinder, the ordinary rack performs linear motion.

6. A steel casing lifting device according to claim 4, characterized in that: The driving member also includes: A second support is evenly mounted on the support plate along the length direction of the common rack; The rollers are respectively mounted on each of the second supports and are against the common racks.

7. A steel casing lifting device according to claim 2, characterized in that: The driving member also includes: The metal sleeves are respectively installed between the support tubes on both sides and the circular racks on both sides.

8. A steel casing lifting device according to any one of claims 1 to 7, characterized in that: Also includes: The first reinforcing plates are respectively fixed to the connection positions of the first bending portions on both sides and the second bending portions on both sides.

9. A steel casing lifting device according to any one of claims 1 to 7, characterized in that: Also includes: The second reinforcing plates are respectively fixed to the connection positions of the second bending portions on both sides and the third bending portions on both sides.

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