A multi-story steel corridor integral hoisting construction method and hoisting device

Abstract

The present invention discloses a method for overall hoisting construction of a multi-story steel corridor and a hoisting device thereof, which comprises: assembling a bottom-level steel corridor on the ground of a vertical projection of the multi-story steel corridor, setting up a supporting steel frame on the bottom-level steel corridor, and assembling a steel corridor of an upper layer on the supporting steel frame, and so on, until the assembly of the multi-story steel corridor is completed on the ground; installing a plurality of tie rods between two adjacent layers of steel corridors for limited tie-tying, and installing a spacing adjustment mechanism on the tie rods; installing a hoisting mechanism, and hoisting the multi-story steel corridor as a whole by the hoisting mechanism, and docking and fixing the steel corridor with the end face of the installation floor; removing the supporting steel frames in sequence from top to bottom, and after the supporting steel frames on each layer of steel corridor are removed, adjusting the spacing adjustment mechanism to align the steel corridor on that layer with the corresponding installation floor; compared with the existing hoisting construction method, this solution is more convenient to operate, has higher construction efficiency, and is safer and more reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a method for integrally hoisting a multi-story steel corridor and a hoisting device thereof. Background Art

[0002] With the continuous development of construction technology, architectural shapes are also changing with each passing day. In order to highlight the novelty of the building's appearance and the diversity of its functions, buildings with corridor structures are emerging in an endless stream. That is, a multi-layer steel structure corridor is set up between two adjacent buildings, and the steel structure corridor of each floor is fixedly connected to the end face of the corresponding floor, and there is no connecting parts between the steel structure corridors of two adjacent floors.

[0003] At present, the main methods for hoisting construction of multi-story steel corridors are:

[0004] 1. When the height of the steel corridor is not very high, it is generally adopted to set up a supporting tower and use a large crane to hoist the steel corridor layer by layer from bottom to top;

[0005] 2. If the height of the steel corridor is too high and the plane size of the steel corridor is too large, it is necessary to consider assembling the steel corridor in situ on the ground, and then hoisting the steel corridor layer by layer through the lifting mechanism installed on the floor. When the lifting mechanism hoists the steel corridor from top to bottom, the fixed upper steel corridor will block the hoisting of the lower steel corridor, so that after the lifting mechanism completes one lifting, the installation floor of the lifting mechanism needs to be lowered. The operation is cumbersome and the construction efficiency is low; and when the lifting mechanism hoists the steel corridor from bottom to top, the fixed lower steel corridor will block the hoisting of the upper steel corridor. At this time, if the upper steel corridor is assembled on the basis of the lower steel corridor, the obstruction problem can be avoided. However, the splicing of the upper steel corridor is restricted by the platform area of ​​the lower steel corridor, and the steel used for splicing is difficult to transport to the platform of the lower steel corridor. At the same time, it will cause the operators to perform scattered splicing operations at high altitude, and there is a safety hazard of people or steel falling from high altitude. Summary of the Invention

[0006] In view of the above-mentioned deficiencies in the prior art, the present invention provides a method for the overall hoisting construction of a multi-story steel corridor and a hoisting device thereof, which solves the problems of complicated hoisting construction operations, low efficiency, and poor safety and reliability of multi-story steel corridors.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] In a first aspect, a method for integrally hoisting a multi-story steel corridor is provided, comprising the following steps:

[0009] S1: Assemble the bottom steel corridor on the ground where the multi-layer steel corridor is vertically projected, set up a supporting steel frame on the bottom steel corridor, and assemble the steel corridor of the next floor on the supporting steel frame, and so on, until the assembly of the multi-layer steel corridor is completed on the ground;

[0010] S2: Install several tie rods between two adjacent steel corridors for position limiting and tying, and install spacing adjustment mechanisms on the tie rods;

[0011] S3: Install the hoisting mechanism and hoist the multi-story steel corridor as a whole through the hoisting mechanism until the steel corridor on the top floor is flush with the corresponding installation floor, and connect and fix the top floor steel corridor to the end surface of the installation floor;

[0012] S4: Remove the supporting steel frames between two adjacent steel corridors from top to bottom. After removing the supporting steel frames on each steel corridor, adjust the spacing adjustment mechanism to align the steel corridor on that layer with the corresponding installation floor, and then dock and fix the steel corridor with the installation floor. Repeat this process until the docking and fixation of multiple layers of steel corridors with the corresponding installation floors is completed.

[0013] S5: Remove the tie rod and spacing adjustment mechanism.

[0014] The beneficial effects of adopting the above technical solution are as follows: the construction method of this solution adopts prefabricated splicing, overall hoisting and layer-by-layer fixing for the multi-story steel corridor, avoiding the layer-by-layer hoisting of the multi-story steel corridor and a series of problems brought about by the layer-by-layer hoisting, such as cumbersome operation, low construction efficiency, and great safety hazards. At the same time, when prefabricating and splicing the multi-story steel corridor, a spacing adjustment mechanism is installed between the two adjacent layers of steel corridors to realize the spacing adjustment of the two adjacent layers of steel corridors, thereby preventing the construction errors caused by prefabricated splicing from causing the inaccurate alignment of the steel corridors on each layer with the corresponding floors after the overall hoisting of the multi-story steel corridor. This makes it unnecessary to precisely control the spacing between the steel corridors on each layer when prefabricating and splicing the multi-story steel corridor in the early stage, thereby reducing the construction difficulty of prefabricated splicing.

[0015] Furthermore, step S1 also includes: measuring the floor spacing between corresponding installation floors of the multi-layer steel corridors, and making the spacing between any two adjacent steel corridors smaller than the floor spacing between the corresponding installation floors.

[0016] The beneficial effect of adopting the above technical solution is: after the top-level steel corridor is docked and fixed with the installation floor, when the spacing of the steel corridors on the remaining floors is adjusted, the steel corridors on each floor are lowered through the spacing adjustment mechanism, and the gravity of the steel corridors on each floor is used as part of the driving force for the downward adjustment. Compared with the driving force required to lift the steel corridors on each floor through the spacing adjustment mechanism, the downward adjustment of the steel corridors on each floor is more convenient and labor-saving.

[0017] In a second aspect, a hoisting device based on a multi-story steel corridor overall hoisting construction method is provided, comprising:

[0018] The hoisting mechanism is used to hoist the multi-story steel corridor as a whole. The hoisting mechanism includes a fixed platform installed on the floor. The fixed platform is provided with a drum connected to the drive motor. The drum is wrapped with a lifting rope, one end of which is connected to the multi-story steel corridor. The fixed platform is provided with an anti-fall mechanism for limiting the one-way rotation of the drum.

[0019] Several tie rods are used to tie two adjacent steel corridors. The two ends of the tie rods pass through the two adjacent steel corridors respectively, and the threads at both ends of the tie rods are equipped with tie nuts that abut against the two adjacent steel corridors respectively. A spacing adjustment mechanism is installed on the tie rods located between the tie nuts and the steel corridors.

[0020] Furthermore, the spacing adjustment mechanism includes a first top plate and a second top plate movably mounted on the tie rod, the end faces of the first top plate and the second top plate that are away from each other are respectively abutted against the tie nut and the steel corridor, and a number of vertical isosceles trapezoidal plates are gap-arranged on the end faces of the first top plate and the second top plate that are close to each other, and the several isosceles trapezoidal plates on the first top plate and the second top plate are staggered, a screw rod is arranged between the first top plate and the second top plate, and the screw rod is symmetrically provided with forward external threads and reverse external threads, and the screw rod is provided with a driving block that respectively cooperates with the forward external threads and the reverse external threads, and the driving block is provided with a pushing surface that slides and fits with the side faces of the isosceles trapezoidal plates on the first top plate and the second top plate, respectively.

[0021] The beneficial effects of adopting the above technical solution are as follows: the spacing adjustment mechanism can be used to achieve the spacing adjustment of two adjacent layers of steel corridors. When in use, the screw is driven to rotate by an external device, so that the two driving blocks respectively matched with the forward external thread and the reverse external thread are moved closer to or away from each other on the screw. When the two driving blocks approach each other, the two driving blocks will squeeze the side surfaces of the isosceles trapezoidal plates on the first top plate and the second top plate, and cause the pushing surface on the driving block to slide with the contact position of the side surface of the isosceles trapezoidal plate, thereby gradually increasing the spacing between the first top plate and the second top plate, and then gradually reducing the spacing between the two adjacent layers of steel corridors; and when the two driving blocks move away from each other, the first top plate and the second top plate are affected by the external load, and the pushing surface on the driving block slides with the contact position of the side surface of the isosceles trapezoidal plate, thereby gradually reducing the spacing between the first top plate and the second top plate, and then gradually increasing the spacing between the two adjacent layers of steel corridors.

[0022] Furthermore, the anti-fall mechanism includes a support frame, a limit block is provided on the support frame, and one end of the limit block is hinged to the support frame, limit rings are provided at both ends of the roller, and a plurality of limit teeth cooperating with the limit block are provided on the circumference of the outer wall of the limit ring, the limit teeth include abutting surfaces for abutting with the end of the limit block and a sliding surface for sliding contact with the side of the limit block, one end of the abutting surface and the sliding surface are fixedly connected to the outer wall of the limit ring, the other end of the abutting surface and the sliding surface intersect and form a tip, and the abutting surface is parallel to the radial direction of the connection between the limit ring and the abutting surface.

[0023] The beneficial effects of adopting the above technical solution are as follows: the drum rotates unidirectionally under the action of the driving motor, and wraps and pulls the lifting rope, thereby realizing the overall lifting of the multi-story steel corridor. At this time, the sliding surface on the rotating limit tooth slides in contact with the side of the limit block, and pushes the limit block to swing back and forth, so that the limit block does not hinder the rotation of the drum. When the drum loses the traction of the driving motor, the load of the lifting rope will cause the drum to rotate in the opposite direction. At this time, the end of the limit block abuts against the abutment surface on the limit tooth, thereby locking the limit tooth, preventing the drum from rotating in the opposite direction, and preventing the lifting rope from falling and causing the multi-story steel corridor to fall.

[0024] Furthermore, a number of leveling supports are provided at the bottom of the fixed platform, and the fixed platform is fixedly connected to the floor by tension bolts, and the tension bolts pass through the leveling supports, the fixed platform and the floor, and a number of pull rods are provided between the fixed platform and the floor beams located on the floor above it, and both ends of the pull rods are hinged with mounting ears, and the two mounting ears are fixedly connected to the fixed platform and the floor beams respectively.

[0025] The beneficial effects of adopting the above technical solution are: by leveling the support, the fixed platform can be ensured to be placed horizontally on the uneven floor, and then fixed to the floor by tension bolts, so that the force borne by the fixed platform can be transmitted to the floor, which is beneficial to the stability of the fixed platform structure; at the same time, the fixed platform is connected to the floor beam above it by a pull rod to prevent the fixed platform from bending and deflecting due to eccentric force when lifting the multi-story steel corridor, thereby improving the stability and reliability of the fixed platform.

[0026] Furthermore, the pull rod includes a sleeve and a screw rod, the sleeve is provided with an internal thread that matches the screw rod, and the two mounting ears are respectively provided on the outer ends of the sleeve and the screw rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural diagram of the lifting device of this scheme.

[0028] Figure 2 This is a structural diagram of the coordination of the steel corridor, tie rods and spacing adjustment mechanism.

[0029] Figure 3This is a structural diagram of the steel corridor and supporting steel frame.

[0030] Figure 4 Schematic diagram of the structure of the spacing adjustment mechanism.

[0031] Figure 5 for Figure 4 Exploded diagram.

[0032] Figure 6 It is a structural diagram of the cooperation between the roller and the anti-fall mechanism.

[0033] Figure 7 It is a structural diagram of the lifting mechanism.

[0034] Among them, 1. Steel corridor, 2. Support steel frame, 3. Tie rod, 4. Spacing adjustment mechanism, 5. Hoisting mechanism, 6. Fixed platform, 7. Roller, 8. Lifting rope, 10. Tie nut, 11. First top plate, 12. Second top plate, 13. Isosceles trapezoidal plate, 14. Screw, 15. Forward external thread, 16. Reverse external thread, 17. Drive block, 18. Push surface, 19. Support frame, 20. Limit block, 21. Limit retaining ring, 22. Limiting tooth, 23. Abutment surface, 24. Sliding surface, 25. Leveling support, 26. Tension bolt, 27. Mounting ear, 28. Sleeve, 29. Screw, 30. Floor, 31. Floor beam. DETAILED DESCRIPTION

[0035] The specific embodiments of the present invention are described below to facilitate understanding of the present invention by those skilled in the art. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the appended claims, these changes are obvious, and all inventions and creations utilizing the concepts of the present invention are protected.

[0036] Example 1

[0037] like Figures 1 to 3 As shown, the overall hoisting construction method of the multi-story steel corridor 1 of this scheme includes the following steps:

[0038] S1: Assembling the bottom steel corridor 1 on the ground of the vertical projection of the multi-layer steel corridor 1, setting up the supporting steel frame 2 on the bottom steel corridor 1, and assembling the steel corridor 1 of the upper layer on the supporting steel frame 2, and so on, until the assembly of the multi-layer steel corridor 1 on the ground is completed; specifically, it also includes: measuring the floor 30 distance between the corresponding installation floors 30 of the multi-layer steel corridor 1, and making the distance between any two adjacent steel corridors 1 smaller than the floor 30 distance between the corresponding installation floors 30;

[0039] S2: Install several tie rods 3 between two adjacent steel corridors 1 for position limiting and tying, and install spacing adjustment mechanisms 4 on the tie rods 3;

[0040] S3: Install the hoisting mechanism 5 and hoist the multi-layer steel corridor 1 as a whole by the hoisting mechanism 5 until the steel corridor 1 on the top floor is flush with the corresponding installation floor 30, and dock and fix the end surface of the top floor steel corridor 1 with the installation floor 30;

[0041] S4: Remove the supporting steel frames 2 between two adjacent layers of steel corridors 1 from top to bottom. After the supporting steel frames 2 on each layer of steel corridors 1 are removed, adjust the spacing adjustment mechanism 4 to align the steel corridor 1 on that layer with the corresponding installation floor 30, and then dock and fix the steel corridor 1 with the installation floor 30. Repeat this process until the docking and fixation of multiple layers of steel corridors 1 with the corresponding installation floors 30 is completed.

[0042] S5: Remove the tie rod 3 and the spacing adjustment mechanism 4.

[0043] The construction method of this scheme adopts the method of prefabricated splicing, overall hoisting and layer-by-layer fixing for the multi-layer steel corridor 1, avoiding the layer-by-layer hoisting of the multi-layer steel corridor 1 and a series of problems such as cumbersome operation, low construction efficiency and great safety hazards caused by the layer-by-layer hoisting. At the same time, when the multi-layer steel corridor 1 is prefabricated and spliced, a spacing adjustment mechanism 4 is installed between the two adjacent layers of steel corridors 1 to achieve the spacing adjustment of the two adjacent layers of steel corridors 1, preventing the construction error caused by prefabricated splicing from causing the multi-layer steel corridor 1 to be hoisted as a whole. The steel corridors 1 on each layer are 30 meters apart from the corresponding floors. The problem of inaccurate alignment means that there is no need to precisely control the spacing between the steel corridors 1 on each floor during the early prefabrication and splicing of the multi-layer steel corridors 1, thereby reducing the construction difficulty of the prefabrication and splicing. After the top-level steel corridor 1 is docked and fixed to the installation floor 30, the spacing of the remaining steel corridors 1 is adjusted by lowering the steel corridors 1 on each floor through the spacing adjustment mechanism 4, and using the gravity of the steel corridors 1 on each floor as part of the driving force for the descent adjustment. Compared with the driving force required to lift the steel corridors 1 on each floor through the spacing adjustment mechanism 4, the descent adjustment of the steel corridors 1 on each floor is more convenient and labor-saving.

[0044] Example 2

[0045] like Figure 1As shown, the lifting device of this scheme based on the overall lifting construction method of the multi-story steel corridor 1 includes a lifting mechanism 5 and a number of tie rods 3. The lifting mechanism 5 is used to lift the multi-story steel corridor 1 as a whole. The lifting mechanism 5 includes a fixed platform 6 installed on the floor 30. The fixed platform 6 is provided with a roller 7 connected to the drive motor. The roller 7 is wrapped with a lifting rope 8, and one end of the lifting rope 8 is connected to the multi-story steel corridor 1; the fixed platform 6 is provided with an anti-fall mechanism for limiting the one-way rotation of the roller 7; the tie rod 3 is used to tie the two adjacent steel corridors 1, and the two ends of the tie rod 3 respectively pass through the two adjacent steel corridors 1, and the two ends of the tie rod 3 are threaded with tie nuts 10 respectively abutting against the two adjacent steel corridors 1, and a spacing adjustment mechanism 4 is installed on the tie rod 3 between the tie nut 10 and the steel corridor 1.

[0046] Example 3

[0047] like Figure 4 and Figure 5 As shown, this embodiment, based on embodiment 2, provides a specific scheme of the spacing adjustment mechanism 4, wherein the spacing adjustment mechanism 4 includes a first top plate 11 and a second top plate 12 movably mounted on the tie rod 3, and the end faces of the first top plate 11 and the second top plate 12 that are away from each other are respectively abutted against the tie nut 10 and the steel corridor 1, and the end faces of the first top plate 11 and the second top plate 12 that are close to each other are gap-arranged with a number of vertical isosceles trapezoidal plates 13, and the several isosceles trapezoidal plates 13 on the first top plate 11 and the second top plate 12 are staggered, and a screw rod 14 is arranged between the first top plate 11 and the second top plate 12, and the screw rod 14 is symmetrically provided with a forward external thread 15 and a reverse external thread 16, and the screw rod 14 is provided with a driving block 17 that respectively cooperates with the forward external thread 15 and the reverse external thread 16, and the driving block 17 is provided with a pushing surface 18 that slides and fits with the side faces of the isosceles trapezoidal plates 13 on the first top plate 11 and the second top plate 12.

[0048] The spacing adjustment mechanism 4 can be used to adjust the spacing between two adjacent layers of steel corridors 1. When in use, the screw 14 is driven to rotate by an external device, so that the two driving blocks 17 respectively matched with the forward external thread 15 and the reverse external thread 16 are moved closer to or away from each other on the screw 14. When the two driving blocks 17 are close to each other, the two driving blocks 17 will squeeze the side surfaces of the isosceles trapezoidal plates 13 on the first top plate 11 and the second top plate 12, and cause the push surface 18 on the driving block 17 to slide with the contact position of the side surface of the isosceles trapezoidal plate 13, thereby gradually increasing the spacing between the first top plate 11 and the second top plate 12, and then gradually reducing the spacing between the two adjacent layers of steel corridors 1; and when the two driving blocks 17 are moved away from each other, the first top plate 11 and the second top plate 12 are acted upon by the external load, and the push surface 18 on the driving block 17 slides with the contact position of the side surface of the isosceles trapezoidal plate 13, thereby gradually reducing the spacing between the first top plate 11 and the second top plate 12, and then gradually increasing the spacing between the two adjacent layers of steel corridors 1.

[0049] Example 4

[0050] like Figure 6 As shown, this embodiment, based on Example 2, provides a specific scheme of the anti-fall mechanism, wherein the anti-fall mechanism includes a support frame 19, a limit block 20 is provided on the support frame 19, and one end of the limit block 20 is hinged to the support frame 19, and a limit ring 21 is provided at both ends of the drum 7, and a plurality of limit teeth 22 cooperating with the limit block 20 are provided on the circumference of the outer wall of the limit ring 21, and the limit teeth 22 include an abutment surface 23 for abutting with the end of the limit block 20 and a sliding surface 24 for sliding contact with the side of the limit block 20, one end of the abutment surface 23 and the sliding surface 24 are fixedly connected to the outer wall of the limit ring 21, and the other end of the abutment surface 23 and the sliding surface 24 intersect and form a tip, and the abutment surface 23 is parallel to the radial direction of the connection between the limit ring 21 and the abutment surface 23.

[0051] The roller 7 rotates unidirectionally under the action of the driving motor and wraps and pulls the lifting rope 8, thereby realizing the overall lifting of the multi-story steel corridor 1. At this time, the sliding surface 24 on the rotating limit tooth 22 slides in contact with the side of the limit block 20 and pushes the limit block 20 to swing back and forth, so that the limit block 20 does not hinder the rotation of the roller 7. When the roller 7 loses the traction of the driving motor, the load of the lifting rope 8 will cause the roller 7 to rotate in the opposite direction. At this time, the end of the limit block 20 abuts against the abutment surface 23 on the limit tooth 22, thereby locking the limit tooth 22, preventing the roller 7 from rotating in the opposite direction, and preventing the lifting rope 8 from falling and causing the multi-story steel corridor 1 to fall.

[0052] Example 5

[0053] like Figure 7As shown, this embodiment, based on Example 2, provides a specific scheme for fixing the platform 6, wherein a plurality of leveling supports 25 are provided at the bottom of the fixed platform 6, and the fixed platform 6 is fixedly connected to the floor 30 by tension bolts 26, and the tension bolts 26 pass through the leveling supports 25, the fixed platform 6 and the floor 30, and a plurality of pull rods are provided between the fixed platform 6 and the floor beam 31 located on the floor 30 above it, and both ends of the pull rods are hinged with mounting ears 27, and the two mounting ears 27 are fixedly connected to the fixed platform 6 and the floor beam 31 respectively, and the pull rod includes a sleeve 28 and a screw rod 29, and the sleeve 28 is provided with an internal thread cooperating with the screw rod 29, and the two mounting ears 27 are respectively provided at the outer ends of the sleeve 28 and the screw rod 29.

[0054] By leveling the support 25, the fixed platform 6 can be placed horizontally on the uneven floor 30, and then fixed to the floor 30 by the tension bolts 26, so that the force borne by the fixed platform 6 can be transmitted to the floor 30, which is beneficial to the stability of the fixed platform 6 structure; at the same time, the fixed platform 6 is connected to the floor beam 31 above it by the pull rod, preventing the fixed platform 6 from bending or deflecting due to eccentric force when lifting the multi-story steel corridor 1, thereby improving the stability and reliability of the fixed platform 6.

Claims

1. A method for overall hoisting construction of a multi-story steel corridor, characterized in that: The following steps are involved: S1: Assemble the bottom steel corridor on the ground where the multi-layer steel corridor is vertically projected, set up a supporting steel frame on the bottom steel corridor, and assemble the steel corridor of the next floor on the supporting steel frame, and so on, until the assembly of the multi-layer steel corridor is completed on the ground; S2: Install several tie rods between two adjacent steel corridors for position limiting and tying, and install spacing adjustment mechanisms on the tie rods; S3: Install the hoisting mechanism and hoist the multi-story steel corridor as a whole through the hoisting mechanism until the steel corridor on the top floor is flush with the corresponding installation floor, and connect and fix the top floor steel corridor to the end surface of the installation floor; S4: Remove the supporting steel frames between two adjacent steel corridors from top to bottom. After removing the supporting steel frames on each steel corridor, adjust the spacing adjustment mechanism to align the steel corridor on that layer with the corresponding installation floor, and then dock and fix the steel corridor with the installation floor. Repeat this process until the docking and fixation of multiple layers of steel corridors with the corresponding installation floors is completed. S5: Remove the tie rod and spacing adjustment mechanism.

2. The method for overall hoisting construction of a multi-story steel corridor according to claim 1 is characterized in that: Step S1 also includes: measuring the floor spacing between corresponding installation floors of the multi-layer steel corridors, and making the spacing between any two adjacent steel corridors smaller than the floor spacing between the corresponding installation floors.

3. A hoisting device based on the overall hoisting construction method of a multi-story steel corridor, characterized in that: include: A hoisting mechanism for hoisting a multi-story steel corridor as a whole, comprising a fixed platform mounted on a floor, a drum connected to a drive motor, a hoisting rope wound around the drum, one end of the hoisting rope connected to the multi-story steel corridor; and an anti-fall mechanism for limiting the one-way rotation of the drum. The anti-fall mechanism includes a support frame, a limit block is provided on the support frame, and one end of the limit block is hinged on the support frame, and limit rings are provided at both ends of the roller, and a plurality of limit teeth cooperating with the limit block are provided on the circumference of the outer wall of the limit ring, and the limit teeth include an abutment surface for abutting with the end of the limit block and a sliding surface for sliding contact with the side surface of the limit block, one end of the abutment surface and the sliding surface are fixedly connected to the outer wall of the limit ring, the other end of the abutment surface and the sliding surface intersect and form a tip, and the abutment surface is parallel to the radial direction of the connection between the limit ring and the abutment surface; Several tie rods are used to tie two adjacent steel corridors together. The two ends of the tie rods pass through the two adjacent steel corridors respectively, and the threads at both ends of the tie rods are equipped with tie nuts that abut against the two adjacent steel corridors respectively. A spacing adjustment mechanism is installed on the tie rods located between the tie nuts and the steel corridors.

4. The hoisting device according to claim 3, characterized in that: The spacing adjustment mechanism includes a first top plate and a second top plate movably mounted on the tie rod, the end faces of the first top plate and the second top plate that are away from each other are respectively abutted against the tie nut and the steel corridor, and a number of vertical isosceles trapezoidal plates are gap-arranged on the end faces of the first top plate and the second top plate that are close to each other, and the several isosceles trapezoidal plates on the first top plate and the second top plate are staggered, a screw rod is arranged between the first top plate and the second top plate, and the screw rod is symmetrically provided with forward external threads and reverse external threads, and the screw rod is provided with driving blocks that respectively cooperate with the forward external threads and the reverse external threads, and the driving block is provided with pushing surfaces that slide and fit with the side faces of the isosceles trapezoidal plates on the first top plate and the second top plate, respectively.

5. The hoisting device according to claim 3, characterized in that: A number of leveling supports are provided at the bottom of the fixed platform, and the fixed platform is fixedly connected to the floor by tension bolts, and the tension bolts pass through the leveling supports, the fixed platform and the floor. A number of pull rods are provided between the fixed platform and the floor beams located on the floor above it, and both ends of the pull rods are hinged with mounting ears, and the two mounting ears are fixedly connected to the fixed platform and the floor beams respectively.

6. The hoisting device according to claim 5, characterized in that: The pull rod includes a sleeve and a screw rod. The sleeve is provided with an internal thread that matches the screw rod. The two mounting ears are respectively provided on the outer ends of the sleeve and the screw rod.

Images