Crane with reinforced base structure

By adopting structural design of reinforcement tubes and additional liquid chambers in the crane base, and using technologies such as buffer fluid and magnetic force-release rods, the problem of loosening and instability of the crane base during use is solved, achieving more stable positioning and more convenient disassembly and assembly.

CN120024806AInactive Publication Date: 2025-05-23JIANGSU DONGHE SPECIAL EQUIP TECH CO LTD
View PDF 11 Cites 0 Cited by

Patent Information

Application Number
CN202510520069.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-24
Publication Date
2025-05-23
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

During the use of existing cranes, the base fixing method is inconvenient for later maintenance and disassembly and replacement of installation positioning points, and the base weakens the rebound force, which leads to the base structure being loose and instable.

Method used

The structural design of the reinforcement tube and the additional liquid cavity is adopted. The reinforcement tube is embedded in the soil and the buffer is used to form a damper effect to reduce the oscillation of the crane base; at the same time, through the cooperation of the magnetic unloading rod and the permanent magnet plate, the potential energy in the additional liquid cavity is released to achieve effective release of kinetic energy.

Benefits of technology

This design not only improves the positioning stability of the crane base and reduces oscillation and instability caused by external force loads, but also facilitates the subsequent disassembly and assembly and positioning connection of the base, improving the reliability of the crane.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120024806A_ABST
    Figure CN120024806A_ABST
Patent Text Reader

Abstract

The invention relates to the technical field of cranes, and discloses a crane with a reinforced base structure, which is characterized in that a base is arranged at the joint of a crane body and the ground, the top surface of the base is positioned under the ground, a positioning pipe is mounted on the outer side of the base in an embedded manner, and the crane body is positioned, connected and reinforced with the positioning pipe on the base through a fastening screw rod; the reinforcing pipe is installed at the bottom of the base in an embedded mode, sliding liquid sealing plates are movably installed in the left end and the right end of the reinforcing pipe, and buffer liquid is arranged in the inner space of the sliding liquid sealing plates and the reinforcing pipe; the additional liquid cavity is connected to the pipe end of the reinforcing pipe through a threaded pipe, buffer liquid is arranged in the additional liquid cavity, and an elastic liquid bag is arranged on the back face of the additional liquid cavity. The crane with the reinforced base structure can be suitable for different application scenes, positioning and use damping of the crane are facilitated, vibration and instability of the base used by the crane caused by external force load are reduced, and meanwhile follow-up disassembly and assembly of the base are facilitated.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention relates to the technical field of cranes, in particular to a crane with a reinforced base structure. Background Art

[0002] A crane is a lifting machine that can lift heavy objects vertically and move them horizontally within a certain range. The use of cranes is generally divided into light and small lifting equipment, bridge-type lifting machinery and boom-type cranes according to their structure and performance differences. Among them, bridge-type lifting machinery includes gantry lifting, and boom cranes include tower crane components and single-arm cranes. When a crane is in use, it is necessary to lift heavy objects and prevent the crane from tipping over and being damaged by shear torque during the lifting process. Therefore, a supporting base is required for the installation of the crane to maintain its own stability during use.

[0003] In order to maintain the stability of the existing cranes such as tower crane components or single-arm cranes during use and prevent the bottom of the crane from being unstable and falling due to lateral force during use, the base components at the bottom of the crane are deeply embedded in the soil, and the base components are positioned by casting or integral welding and bolt positioning. The bottom of the crane is positioned and reinforced by casting positioning. At the same time, in this way, the vertical cantilever arm of the crane column is shortened, so that the column components are not easily damaged by shear force when the crane is used to cantilever objects with a single arm; Although the positioning method of casting and welding can be used to quickly position the base of the crane, it is inconvenient for the later maintenance and disassembly and replacement of the installation positioning points for small single-arm cranes. At the same time, if the assembly method of bolt positioning is used, since the crane needs to lift heavy objects, the external forces such as the lifting shaking and collision of the heavy objects in this process will cause the reaction force of the crane and its bottom base to vibrate, and the base has poor performance in weakening the anti-vibration force. During long-term continuous use, the base structure is prone to loosening and instability.

[0004] In view of the above problems, it is urgent to carry out innovative design based on the original crane. Summary of the invention

[0005] The object of the present invention is to provide a crane with a reinforced base structure to solve the problem that the existing crane proposed in the above background technology is inconvenient for later maintenance and disassembly and replacement of installation positioning points for small single-arm cranes due to the base fixing method.

[0006] To achieve the above object, the present invention provides the following technical solution: A crane with a reinforced base structure, comprising: A base is provided at the connection between the crane body and the ground, the top surface of the base is located below the ground, a positioning tube is embedded on the outer side of the base, and the crane body is positioned, connected and reinforced by a fastening screw and the positioning tube on the base; It also includes: a reinforcement tube, which is embedded in the bottom of the base, and the left and right ends of the reinforcement tube are movably installed with sliding liquid sealing plates, and a buffer is provided in the internal space between the sliding liquid sealing plate and the reinforcement tube; The additional liquid cavity is connected to the pipe end of the reinforcement pipe through a threaded pipe, a buffer is arranged in the additional liquid cavity, an elastic liquid bag is arranged on the back of the additional liquid cavity, and the additional liquid cavity is pre-buried under the soil.

[0007] Preferably, the length of the reinforcement pipe is greater than the length and width of the base, the pipe end of the reinforcement pipe is located outside the base, and the reinforcement pipe is buried and compacted in place by soil, and protruding steel bars are also provided on the outside of the base.

[0008] Preferably, the inner diameter of the middle section of the reinforcement tube is smaller than the inner diameter of the side tubes, and the buffer content inside the reinforcement tube is less than 3 / 4 of the capacity of the internal space between the reinforcement tube and the sliding liquid sealing plate.

[0009] Preferably, the sliding liquid sealing plate and the reinforcement tube are arranged to be coaxially distributed, and a sealed fitting sliding connection is arranged. A bracket is fixed at an equal angle on the outer wall of the sliding liquid sealing plate on one side facing the edge of the reinforcement tube. A permanent magnet plate is arranged at the end of the bracket. The permanent magnet plate and the inner wall slide groove structure of the edge of the reinforcement tube are slidably connected.

[0010] Preferably, the inner wall slide groove at the edge of the reinforcement tube is a magnetic material component, and the magnetism of the slide groove structure is the same as the magnetic setting at the connection of the permanent magnet plate.

[0011] Preferably, the additional liquid chamber and the reinforcement pipe are coaxially distributed, the additional liquid chamber is positioned and reinforced by the threaded pipe and soil burial and compaction, and magnetic unloading rods are evenly spaced on one side of the additional liquid chamber facing the reinforcement pipe.

[0012] Preferably, the magnetic unloading rod and the permanent magnet plate are coaxially arranged in a one-to-one correspondence, the magnetic unloading rod is "T"-shaped, and the "T"-shaped upper end of the magnetic unloading rod has the same magnetic setting as the opposite surface of the permanent magnet plate.

[0013] Preferably, an additional support is provided between the connection between the crane body and the base, the additional support and the base are vertically coaxially distributed disassembly and installation structures, and a threaded rod is rotatably installed in the middle of the additional support, and the lower half of the threaded rod is threadedly connected to a lower positioning cylinder, and the lower positioning cylinder is movably installed at the bottom of the additional support.

[0014] Preferably, the bottom of the side of the additional support is arranged as a downward convex structure, and the downward convex structure corresponds to the inner concave structure inside the base, and the downward convex structure and the inner concave structure are arranged to be vertically fitted and horizontally engaged.

[0015] Preferably, side wing plates are fixed at equal intervals on the outer wall of the lower positioning cylinder, and the side wing plates are arranged in a right-angled triangle. A positioning column is movably installed through the side wall of the additional support facing the side wing plate, and an elastic member is fixed between the back edge of the positioning column and the inside of the additional support. A propulsion wheel is arranged at the back center of the positioning column, and the propulsion wheel rolls in contact with the outer wall of the triangle hypotenuse of the side wing plate; Moreover, a positioning hole is provided inside the base toward which the positioning column is directed, and the positioning column and the positioning hole are distributed in a one-to-one correspondence.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the crane with a reinforced base structure can be applied to different application scenarios, is convenient for positioning and shock absorption of the crane, reduces the vibration and instability of the crane base caused by external loads, and is convenient for subsequent disassembly and assembly of the base. The specific contents are as follows: 1. It only needs to be equipped with a reinforcement pipe. When the base is installed, it can be directly inserted into the soil. The reinforcement pipe and the steel structure extending outward from the outside of the base can be used. The contact surface between the reinforcement pipe and the soil can be used to increase the force surface when the base is positioned under the action of soil compaction. It is not easy to fall or tilt under the action of external force, making the overall positioning of the base more stable. Furthermore, the reinforcement pipe is provided with a buffer inside, which, when used for installation and positioning at the bottom of the base, forms a damper effect for installation at the bottom of the base, so that the overall installation of the base is stable, and the vibration potential energy release during the use of the crane can be realized; Furthermore, the end of the reinforcement pipe is connected to an additional liquid cavity through an elastic soft connection of the threaded pipe, and the additional liquid cavity is positioned by soil compaction. When the reinforcement pipe uses the buffer therein to release the oscillation potential energy, the sliding liquid seal plate in the reinforcement pipe interacts with the magnetic repulsion of the permanent magnetic plate and the magnetic unloading rod, so that when the buffer releases the oscillation potential energy, the kinetic energy causes the buffer and the elastic liquid bag in the additional liquid cavity to move through the magnetic repulsion, thereby achieving the energy release effect. 2. Set up an additional support for matching installation. The assembly of the additional support is achieved through the use of a lower positioning cylinder that is threadedly connected to a threaded rod and its lower half, so that the lower positioning cylinder moves upward and utilizes the interaction between the side wing plate and the propulsion wheel to drive the positioning column and the positioning hole to be plugged in, thereby achieving the effect of positioning and connecting the additional support and the base. At the same time, the reverse rotation of the threaded rod can drive the lower positioning cylinder to move downward, thereby achieving rapid separation of the additional support and the base, and facilitating the disassembly, assembly, positioning and connection of the additional support. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front structure of the present invention; Figure 2 This is a schematic diagram of the base structure of the present invention; Figure 3 This is a schematic diagram of the reinforcement pipe structure of the present invention; Figure 4 This is a schematic diagram of the front structure of the sliding installation of the sliding liquid sealing plate of the present invention; Figure 5 This is a schematic diagram of the back structure of the sliding installation of the sliding liquid sealing plate of the present invention; Figure 6 This is a schematic diagram of the additional liquid chamber structure of the present invention; Figure 7 This is a schematic diagram of the installation distribution structure of the reinforcement pipe and the additional liquid chamber of the present invention; Figure 8 This is a schematic diagram of the top view of the installation structure of the lower positioning cylinder of the present invention; Fig. 9 This is a schematic diagram of the bottom-up structure of the lower positioning tube installation of the present invention.

[0018] In the figure: 1. Crane body; 2. Base; 3. Positioning tube; 4. Additional support; 5. Reinforcement tube; 6. Sliding liquid seal plate; 601. Bracket; 602. Permanent magnet plate; 603. Magnetic unloading rod; 7. Threaded tube; 8. Additional liquid chamber; 9. Elastic liquid bag; 10. Threaded rod; 11. Lower positioning cylinder; 12. Side wing plate; 13. Positioning column; 14. Propulsion wheel; 15. Positioning hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1-Figure 6 The present invention provides a technical solution: a crane with a reinforced base structure, comprising: A base 2 is provided at the connection between the crane body 1 and the ground, the top surface of the base 2 is located below the ground, a positioning tube 3 is embedded and installed on the outer side of the base 2, and the crane body 1 is positioned, connected and reinforced by fastening screws and the positioning tube 3 on the base 2; It also includes: a reinforcement tube 5, which is embedded and installed at the bottom of the base 2, and a sliding liquid sealing plate 6 is movably installed inside the left and right ends of the reinforcement tube 5, and a buffer is provided in the internal space of the sliding liquid sealing plate 6 and the reinforcement tube 5; an additional liquid chamber 8, which is connected to the tube end of the reinforcement tube 5 through a threaded tube 7, and a buffer is provided in the additional liquid chamber 8, and an elastic liquid bag 9 is provided on the back of the additional liquid chamber 8, and the additional liquid chamber 8 is pre-buried under the soil; the length of the reinforcement tube 5 is greater than the length and width of the base 2, the tube end of the reinforcement tube 5 is located on the outside of the base 2, and the reinforcement tube 5 is buried and compacted by the soil, and the outside of the base 2 is also provided with an extended steel bar; in this technical solution, the base 2 is pre-buried under the soil, and the soil is compacted to achieve the reinforcement of the base 2, wherein the reinforcement tube 5 and the steel bar structure extending from the outside of the base 2 can increase the contact force surface between the base 2 and the soil when the soil is compacted, so that the base 2 is not easy to tip over and tilt due to the positioning of the soil when it is subjected to force; Another example Figure 2 and Figure 3 As shown, further: the inner diameter of the middle section of the reinforcement tube 5 is smaller than the inner diameter of the side end tube, and the buffer content inside the reinforcement tube 5 is less than 3 / 4 of the internal space capacity between the reinforcement tube 5 and the sliding liquid sealing plate 6; In the above technical solution, the reinforcement pipe 5 can improve the positioning stability of the base 2. At the same time, the buffer provided inside the reinforcement pipe 5, when the crane and the base 2 are subjected to anti-vibration oscillation due to the reaction force during use, the buffer in the reinforcement pipe 5 oscillates and moves under the action of external force, thereby releasing the oscillating force, achieving the damper effect, and protecting the base 2; Also adopted Figure 3-Figure 6 In the technical solution shown, a coaxially distributed sealed fitting sliding connection is set between the sliding liquid sealing plate 6 and the reinforcement tube 5. A bracket 601 is fixed at an equal angle on the outer wall of the sliding liquid sealing plate 6 facing the edge of the reinforcement tube 5. A permanent magnet plate 602 is set at the end of the bracket 601. The permanent magnet plate 602 is slidably connected to the inner wall slide groove structure of the edge of the reinforcement tube 5. The inner wall slide groove of the edge of the reinforcement tube 5 is a magnetic material component. The magnetism of the slide groove structure is connected to the permanent magnet plate 602. The additional liquid chamber 8 is coaxially arranged with the reinforcement pipe 5, and the additional liquid chamber 8 is positioned and reinforced by the threaded pipe 7 and the soil burying and compacting, and the additional liquid chamber 8 is evenly spaced on the side facing the reinforcement pipe 5. The magnetic unloading rod 603 is coaxially arranged with the permanent magnetic plate 602 in a one-to-one correspondence, and the magnetic unloading rod 603 is in a "T" shape, and the "T"-shaped upper end of the magnetic unloading rod 603 has the same magnetic setting as the opposite surface of the permanent magnetic plate 602; In this technical solution, the vibration potential energy is released by the vibration and movement of the buffer solution inside the reinforcement tube 5. At the same time, the vibration and movement of the buffer solution can make the sliding liquid seal plate 6 move synchronously. The permanent magnet plate 602 and the magnetic material slide groove on the inner wall of the edge of the reinforcement tube 5 are used to maintain the stable sliding of the sliding liquid seal plate 6. At the same time, the magnetic repulsion between the magnetic unloading rod 603 and the permanent magnet plate 602 is used to make the sliding liquid seal plate 6 change its position due to the vibration movement of the buffer solution. Its own potential energy is released through the additional liquid cavity 8. The additional liquid cavity 8 It is connected to the reinforcement tube 5 through a threaded tube 7, and the threaded tube 7 is made of a flexible elastic material. When the reinforcement tube 5 releases the vibration potential energy of the base 2, the additional liquid chamber 8 has a good energy release effect. At the same time, the released kinetic energy will not generate a reaction force to affect the stability of the reinforcement tube 5 and the base 2. The potential energy of the additional liquid chamber 8 is released, and the buffer solution and the elastic liquid bag 9 arranged inside it move and deform and release. The elastic liquid bag 9 is installed on the additional liquid chamber 8, and a deformation gap is reserved between the elastic liquid bag 9 and the soil under the surface.

[0021] Embodiment 2: Figure 1 and Figure 7-Figure 9 As shown, the present invention further discloses a detachable and installable reinforced base, which is applied to cranes such as tower cranes, or in complex soil environments with insufficient stability. Simple soil compaction cannot achieve crane positioning, and concrete pouring is required to achieve crane positioning, as follows: The base 2 is positioned by concrete pouring. When the crane body 1 is installed, the additional support 4 is used to achieve the transition between the two, which is convenient for the later disassembly of the additional support 4 and the crane body 1, and reduces the difficulty of disassembly of the crane body 1 caused by pouring. Further, the technical solution discloses that: an additional support 4 is also arranged between the connection of the crane body 1 and the base 2, the additional support 4 and the base 2 are a disassembly and installation structure distributed vertically and coaxially, and a threaded rod 10 is rotatably installed in the middle of the additional support 4, and a lower positioning cylinder 11 is threadedly connected to the lower half of the threaded rod 10, and the lower positioning cylinder 11 is installed at the bottom of the additional support 4 in a lifting and movable manner; the side bottom of the additional support 4 is arranged as a lower convex structure, and the lower convex structure corresponds to the inner concave structure inside the base 2, and the lower convex structure and the inner concave structure are The side wing plates 12 are fixed at equal intervals on the outer wall of the lower positioning cylinder 11, and the side wing plates 12 are arranged in a right-angled triangle. A positioning column 13 is movably installed through the side wall of the additional support 4 facing the side wing plates 12. An elastic member is fixed between the back edge of the positioning column 13 and the inside of the additional support 4. A propulsion wheel 14 is arranged at the back center of the positioning column 13, and the propulsion wheel 14 is fitted and rolled with the outer wall of the triangle hypotenuse of the side wing plate 12; and a positioning hole 15 is opened inside the base 2 facing the positioning column 13, and the positioning column 13 and the positioning hole 15 are distributed one by one; In this technical solution, the additional support 4 is inserted into the base 2, and the threaded rod 10 is rotated so that when the threaded rod 10 rotates, its threaded connection mode causes the lower positioning cylinder 11 and the side wing plate 12 to rise. In this process, the triangular hypotenuse of the side wing plate 12 is rollingly connected with the propulsion wheel 14 on the positioning column 13, and the hypotenuse is used to push the external force to reach the positioning column 13 extending outward and inserting it into the positioning hole 15 opened inside the base 2. By plugging the positioning column 13 and the positioning hole 15, a good positioning between the additional support 4 and the base 2 can be achieved. At the same time, when it is necessary to export the additional support 4 from the base 2, due to the weight of the additional support 4 and the contact force between the contact surfaces of the additional support 4 and the base 2, the export operation of the additional support 4 is inconvenient. In the above-mentioned application of the threaded rod 10, the threaded rod 10 can be rotated in the opposite direction so that the lower positioning tube 11 in the lower half of its bottom moves downward, and the lower positioning tube 11 is in direct contact with the base 2. Under the reverse pushing force, the additional support 4 is pushed out from the inside of the base 2, so as to achieve the effect of quick application, removal and separation of the additional support 4.

[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crane with a reinforced base structure, comprising: A base (2) is provided at the connection between the crane body (1) and the ground, the top surface of the base (2) is located below the ground, a positioning tube (3) is embedded and installed on the outer side of the base (2), and the crane body (1) is positioned, connected and reinforced with the positioning tube (3) on the base (2) by means of a fastening screw; It is characterized by further comprising: A reinforcement tube (5) is embedded in the bottom of the base (2), and sliding liquid sealing plates (6) are movably installed inside the left and right ends of the reinforcement tube (5), and a buffer is provided in the internal space between the sliding liquid sealing plate (6) and the reinforcement tube (5); The additional liquid chamber (8) is connected to the pipe end of the reinforcement pipe (5) through a threaded pipe (7), a buffer is provided in the additional liquid chamber (8), an elastic liquid bag (9) is provided on the back of the additional liquid chamber (8), and the additional liquid chamber (8) is pre-buried under the soil.

2. The crane with a reinforced base structure according to claim 1, characterized in that: The length of the reinforcement pipe (5) is greater than the length and width of the base (2); the end of the reinforcement pipe (5) is located outside the base (2); the reinforcement pipe (5) is buried and compacted in place by soil; and an outwardly extending steel bar is also provided on the outside of the base (2).

3. The crane with a reinforced base structure according to claim 1, characterized in that: The inner diameter of the middle section of the reinforcing tube (5) is smaller than the inner diameter of the side end tube, and the buffer content inside the reinforcing tube (5) is less than 3 / 4 of the capacity of the internal space between the reinforcing tube (5) and the sliding liquid sealing plate (6).

4. A crane with a reinforced base structure according to any one of claims 1 to 3, characterized in that: The sliding liquid sealing plate (6) and the reinforcement tube (5) are arranged to be coaxially distributed and sealed in a fitting sliding connection. A bracket (601) is fixed at an equal angle on the outer wall of the sliding liquid sealing plate (6) on one side facing the edge of the reinforcement tube (5). A permanent magnet plate (602) is arranged at the end of the bracket (601). The permanent magnet plate (602) and the inner wall sliding groove structure of the edge of the reinforcement tube (5) are in sliding connection.

5. The crane with a reinforced base structure according to claim 4, characterized in that: The inner wall slide groove at the edge of the reinforcement tube (5) is a magnetic material component, and the magnetism of the slide groove structure is the same as the magnetism setting at the connection point of the permanent magnet plate (602).

6. A crane with a reinforced base structure according to claim 1 or 5, characterized in that: The additional liquid chamber (8) and the reinforcement pipe (5) are coaxially distributed and corresponding, the additional liquid chamber (8) is positioned and reinforced by the threaded pipe (7) and soil burying and compacting, and magnetic unloading rods (603) are evenly spaced on one side of the additional liquid chamber (8) facing the reinforcement pipe (5).

7. The crane with a reinforced base structure according to claim 6, characterized in that: The magnetic unloading rod (603) and the permanent magnetic plate (602) are coaxially arranged in a one-to-one correspondence. The magnetic unloading rod (603) is in a "T" shape, and the "T"-shaped upper end of the magnetic unloading rod (603) and the opposite surface of the permanent magnetic plate (602) have the same magnetic setting.

8. The crane with a reinforced base structure according to claim 1, characterized in that: An additional support (4) is also provided between the connection point of the crane body (1) and the base (2); the additional support (4) and the base (2) are disassembly and installation structures that are coaxially distributed vertically; a threaded rod (10) is rotatably installed in the middle of the additional support (4); and a lower positioning cylinder (11) is threadedly connected to the lower half of the threaded rod (10); the lower positioning cylinder (11) is movably installed at the bottom of the additional support (4) in a lifting manner.

9. The crane with a reinforced base structure according to claim 8, characterized in that: The bottom of the side of the additional support (4) is arranged as a convex structure, the convex structure matches and corresponds to the concave structure inside the base (2), and the convex structure and the concave structure are arranged to fit vertically and engage horizontally.

10. A crane with a reinforced base structure according to claim 8 or 9, characterized in that: Side wing plates (12) are fixed at equal intervals on the outer wall of the lower positioning cylinder (11), and the side wing plates (12) are arranged in a right-angled triangle. A positioning column (13) is movably installed through the side wall of the additional support (4) facing the side wing plate (12), and an elastic member is fixed between the back edge of the positioning column (13) and the inside of the additional support (4). A propulsion wheel (14) is arranged at the back center of the positioning column (13), and the propulsion wheel (14) is in contact with the outer wall of the triangle hypotenuse of the side wing plate (12) and rolls; Furthermore, a positioning hole (15) is provided inside the base (2) facing the positioning column (13), and the positioning columns (13) and the positioning holes (15) are distributed in a one-to-one correspondence.

Citation Information

Patent Citations

  • Civil engineering anti-seismic structure

    CN107630473A

  • Crane base with stable buffer structure

    CN108840238A

  • Motor internal spline shaft hoisting tool capable of avoiding damage to motor internal spline shaft

    CN113479763A

  • Conversion device for different bases of construction tower crane and use method

    CN116281673A

  • Hoisting device and hoisting method for small-hole end socket

    CN119117901A