Recyclable elevator derrick I-steel mounting bracket

By designing a rotatable elevator derrick I-steel installation lever, and using thread drive mechanism and extension mechanism to achieve structural height adjustment, the problem of slurry leakage risk and low formwork usage rate during the I-steel installation process of elevator shaft is solved, achieving a more efficient construction process and cost-reducing effect.

CN222745633UActive Publication Date: 2025-04-11CHINA CONSTR SECOND ENG BUREAU SHENZHEN CONSTR INVESTMENT DEV CO LTD +2
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Patent Information

Application Number
CN202421316823.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-07
Publication Date
2025-04-11
Estimated Expiration
2034-06-07

AI Technical Summary

Technical Problem

During the I-shaped steel installation process of elevator shafts, the prior art has problems such as the risk of slurry leakage and the low usage rate of templates.

Method used

A rotatable elevator derrick I-steel installation cow leg is designed, and a thread drive mechanism and an extension mechanism are used to change the spacing between the first member and the second member through the thread drive mechanism. The extension mechanism performs an extension or contraction action under the action of the transmission mechanism between the first member and the second member to realize the height adjustment of the structure.

Benefits of technology

Through height adjustment, the holes left by I-shaped steel when passing through the wall are avoided, the later filling work is reduced, the usage rate of the formwork is optimized, the risk of concrete slurry leakage is reduced, and the component can be reused to a certain extent, reducing costs.

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Abstract

The utility model relates to the related technical field of constructional engineering, in particular to a turnover elevator derrick I-shaped steel installation bracket which comprises a first component and a second component and further comprises a thread driving mechanism arranged between the first component and the second component. The thread driving mechanism can drive the first component and the second component to move away from each other or close to each other, so that the distance between the first component and the second component is changed; the bottom end of the first component and the bottom end of the second component are each provided with a set of stretching mechanism, the two sets of stretching mechanisms are connected with a transmission mechanism arranged between the first component and the second component, holes left when I-shaped steel penetrates through a wall are avoided, the later filling work is reduced, and the utilization rate of formworks is optimized; the risk of concrete leakage at the part is reduced, and the member can be repeatedly used to a certain extent, so that the cost is reduced.
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Description

Technical Field

[0001] The utility model relates to the technical field related to construction engineering, in particular to an I-beam mounting bracket for a rotatable elevator shaft frame. Background Art

[0002] With the rapid development of society, more and more high-rise buildings appear in cities. Correspondingly, the use of elevators has gradually become popular. During the construction of elevators, it is necessary to place I-beams in the elevator shaft.

[0003] Nowadays, the method of installing I-beams in elevator shafts is to pass the I-beams through the walls. The nearby wall formwork needs to be cut, and there is a risk of leakage when pouring concrete. Summary of the invention

[0004] The utility model aims to provide a rotatable elevator shaft frame I-beam mounting bracket to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A rotatable elevator shaft frame I-beam mounting bracket comprises a first component and a second component, and further comprises:

[0007] a thread drive mechanism, disposed between the first member and the second member, and capable of driving the first member and the second member to move away from or toward each other, so as to change the distance between the first member and the second member;

[0008] An extension mechanism, one set is provided at the bottom end of the first member and the bottom end of the second member, and the two sets of the extension mechanism are connected to a transmission mechanism provided between the first member and the second member;

[0009] When the first component and the second component move away from each other, the transmission mechanism is triggered and causes the extension mechanism to move, and the extension mechanism can perform an extension action. When the first component and the second component move toward each other, the extension mechanism performs a contraction action.

[0010] As a further solution of the utility model: the first component includes a first vertical plate and a guide sleeve fixed to one side of the first vertical plate;

[0011] The second component includes a second vertical plate arranged opposite to the first vertical plate, and a telescopic plate fixed to a side of the second vertical plate facing the first vertical plate.

[0012] As a further solution of the utility model: the cross-sections of the guide sleeve and the telescopic plate are both set in an "L" shape, and the guide sleeve and the telescopic plate are slidably fitted together, and the threaded drive mechanism is arranged between the first vertical plate and the second vertical plate.

[0013] As a further solution of the utility model: the threaded driving mechanism comprises a threaded rod rotatably mounted on the first vertical plate and a threaded sleeve sleeved on the threaded rod and threadedly connected to the threaded rod;

[0014] Wherein, one end of the threaded sleeve away from the first vertical plate is fixedly connected to the second vertical plate, a countersunk hole is provided on the side of the first vertical plate away from the second vertical plate, an adjusting knob is provided in the countersunk hole, and the adjusting knob is fixed to the threaded rod.

[0015] As a further solution of the utility model: a deep groove is respectively formed at the bottom of the first vertical plate and the second vertical plate, and the extension mechanism comprises a first telescopic bottom plate and a second telescopic bottom plate respectively slidably arranged in the two deep grooves;

[0016] Wherein, the first telescopic bottom plate is slidably fitted with the first vertical plate, and the second telescopic bottom plate is slidably fitted with the second vertical plate.

[0017] As a further solution of the utility model: a guide arm is fixedly provided on the side of the first telescopic bottom plate, a telescopic arm is fixedly provided on the side of the second telescopic bottom plate, the telescopic arm and the guide arm are slidably fitted, and each is connected with a set of rotating push-pull structures, and the two sets of rotating push-pull structures are respectively installed on the first vertical plate and the second vertical plate;

[0018] A first through slot is respectively formed on the inner side of the first vertical plate and the second vertical plate, and the two first through slots are respectively used for allowing the guide arm and the telescopic arm to move in the vertical direction.

[0019] As a further solution of the utility model: the transmission mechanism includes a toothing assembly connected to the threaded sleeve and a sleeve assembly arranged between the first vertical plate and the second vertical plate, the toothing assembly includes an assembly plate fixed on the threaded sleeve, a gear rotatably mounted on the assembly plate, and a rack plate fixedly mounted on the first vertical plate, the gear is meshed with the rack plate, and the rotating shaft of the gear is connected to the sleeve assembly.

[0020] As a further solution of the utility model: the sleeve assembly includes a transmission shaft rotatably mounted on the first vertical plate and a transmission tube rotatably mounted on the second vertical plate and slidably sleeved with the transmission shaft;

[0021] Wherein, a first bevel gear is fixedly mounted on the rotating shaft of the gear, a second bevel gear meshing with the first bevel gear is fixedly mounted on the transmission tube, and the transmission shaft and the transmission tube are respectively connected to the two sets of the rotating push-pull structures through a transmission belt;

[0022] Wherein, two strip-shaped protrusions are formed on the outer circumference of the transmission shaft, and two strip-shaped grooves adapted to the strip-shaped protrusions are provided on the inner wall of the transmission tube.

[0023] As a further solution of the utility model: a connecting cross bar is fixed to one side of each of the guide arm and the telescopic arm, and the rotating push-pull structure includes a disc rotatably mounted on the first vertical plate or the second vertical plate, a column fixed at the eccentric position of the disc, and a push-pull rod connecting the column and the connecting cross bar;

[0024] Wherein, the two ends of the push-pull rod are rotatably connected to the column and the connecting cross bar respectively, and the transmission belt connects the rotating shaft of the disc and the transmission shaft or the transmission pipe.

[0025] As a further solution of the utility model: the first guide sleeve is provided with two threaded holes, each of the two threaded holes is provided with an embedded screw, and the telescopic plate is provided with two second through grooves, and the second through grooves are flush with the threaded holes.

[0026] Compared with the prior art, the beneficial effects of the utility model are: the utility model is novel in design. In actual use, the embedded screw is used as an embedded part. The component part is first pre-processed. After the component is installed, the I-beam is placed on the surface and fixed. This method avoids the hole left when the I-beam passes through the wall, reduces the subsequent filling work, optimizes the utilization rate of the formwork, reduces the risk of concrete leakage in this part, and the component can be reused to a certain extent, reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The present invention is a structural schematic diagram of an embodiment of installing a corbel on an I-beam of a rotatable elevator shaft frame.

[0028] Figure 2 A structural schematic diagram from another angle of an embodiment of installing a corbel on an I-beam of a rotatable elevator shaft frame.

[0029] Figure 3 A structural schematic diagram of another angle of an embodiment of installing a corbel on an I-beam of a rotatable elevator shaft frame.

[0030] Figure 4 A side view of an embodiment of installing a corbel on an I-beam of a revolving elevator shaft frame.

[0031] Figure 5for Figure 1 A magnified view of the structure at center.

[0032] Figure 6 A schematic diagram of the structure of the transmission mechanism in one embodiment of installing a corbel on an I-beam of a rotatable elevator shaft frame.

[0033] Figure 7 for Figure 6 A magnified view of the structure at point B.

[0034] Figure 8 A structural explosion diagram of an embodiment of installing a corbel on an I-beam of a rotatable elevator shaft frame.

[0035] In the figure: 1. first component; 101. first vertical plate; 102. guide sleeve; 103. first telescopic bottom plate; 2. second component; 201. second vertical plate; 202. telescopic plate; 203. second telescopic bottom plate; 3. adjusting knob; 4. threaded rod; 5. threaded sleeve; 6. assembly plate; 7. gear; 8. rack plate; 9. transmission shaft; 10. transmission pipe; 11. first bevel gear; 12. second bevel gear; 13. transmission belt; 14. disc; 15. push-pull rod; 16. guide arm; 17. telescopic arm; 18. first through groove; 19. embedded screw; 20. second through groove; 21. strip-shaped protrusion; 22. strip-shaped groove; 23. connecting cross bar; 24. column; 25. deep groove. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0038] See also Figure 1-Figure 8 In an embodiment of the utility model, a rotatable elevator shaft frame I-beam mounting bracket includes a first component 1 and a second component 2, and also includes:

[0039] A thread drive mechanism is provided between the first member 1 and the second member 2, and the thread drive mechanism can drive the first member 1 and the second member 2 to move away from or toward each other, so that the distance between the first member 1 and the second member 2 changes;

[0040] An extension mechanism, one set is provided at the bottom end of each of the first member 1 and the second member 2, and the two sets of the extension mechanism are connected to a transmission mechanism provided between the first member 1 and the second member 2;

[0041] When the first component 1 and the second component 2 move away from each other, the transmission mechanism is triggered and prompts the extension mechanism to move, and the extension mechanism can perform an extension action. When the first component 1 and the second component 2 move toward each other, the extension mechanism performs a contraction action.

[0042] Please refer again Figure 8 The first component 1 includes a first vertical plate 101 and a guide sleeve 102 fixed to one side of the first vertical plate 101. The second component 2 includes a second vertical plate 201 arranged opposite to the first vertical plate 101 and a telescopic plate 202 fixed to the second vertical plate 201 facing the first vertical plate 101.

[0043] The cross-sections of the guide sleeve 102 and the telescopic plate 202 are both arranged in an “L” shape, and the guide sleeve 102 and the telescopic plate 202 are slidably fitted together, and the threaded drive mechanism is arranged between the first vertical plate 101 and the second vertical plate 201 .

[0044] When in use, the threaded drive mechanism works, and the guide sleeve 102 and the telescopic plate 202 play a guiding role, so that the telescopic drive mechanism can drive the second vertical plate 201 to gradually move away from the first vertical plate 101, and correspondingly, the telescopic plate 202 gradually slides toward the outside of the guide sleeve 102. At the same time, the transmission mechanism is triggered and prompts the extension mechanism to move, and the extension mechanism can perform an extension action, so that the distance between the first vertical plate 101 and the second vertical plate 201 is increased, and the heights of both the first vertical plate 101 and the second vertical plate 201 are increased, thereby realizing the adjustability of the specifications of the entire structure, so that in actual construction, the structure can adjust its own specifications according to actual construction needs, which greatly improves the practicality and is suitable for popularization and use.

[0045] Please refer again Figure 2 and Figure 8The threaded driving mechanism includes a threaded rod 4 rotatably mounted on the first vertical plate 101 and a threaded sleeve 5 sleeved on the threaded rod 4 and threadedly connected to the threaded rod 4;

[0046] The end of the threaded sleeve 5 away from the first vertical plate 101 is fixedly connected to the second vertical plate 201 , and a countersunk hole is provided on the side of the first vertical plate 101 away from the second vertical plate 201 . An adjusting knob 3 is provided in the countersunk hole, and the adjusting knob 3 is fixed to the threaded rod 4 .

[0047] When in use, when the specifications of the entire structure need to be adaptively adjusted, the staff can use the adjustment knob 3 to rotate the threaded rod 4 in a forward or reverse direction;

[0048] When the threaded rod 4 rotates in the forward direction, the threaded sleeve 5 will be threadedly matched with the threaded rod 4 and move along the axial direction of the threaded rod 4, so that the second vertical plate 201 gradually moves away from the first vertical plate 101, so that the distance between the first vertical plate 101 and the second vertical plate 201 increases. At the same time, the transmission mechanism is triggered and prompts the stretching mechanism to move, and the stretching mechanism can perform a stretching action, so that the distance between the first vertical plate 101 and the second vertical plate 201 increases, and the heights of the first vertical plate 101 and the second vertical plate 201 are both increased;

[0049] On the contrary, when the threaded rod 4 rotates in the reverse direction, the threaded sleeve 5 is threadedly engaged with the threaded rod 4 and drives the second vertical plate 201 to gradually move toward the first vertical plate 101, thereby causing the distance between the first vertical plate 101 and the second vertical plate 201 to decrease. Accordingly, the transmission mechanism is triggered, prompting the extension mechanism to perform a contraction action to reduce the height of the entire structure.

[0050] Please refer again Figure 5 , Figure 6 as well as Figure 7 The first vertical plate 101 and the second vertical plate 201 each have a deep groove 25 at their bottoms, and the extension mechanism includes a first telescopic bottom plate 103 and a second telescopic bottom plate 203 respectively slidably disposed in the two deep grooves 25. The first telescopic bottom plate 103 is slidably fitted with the first vertical plate 101, and the second telescopic bottom plate 203 is slidably fitted with the second vertical plate 201.

[0051] A guide arm 16 is fixedly provided on the side of the first telescopic bottom plate 103, and a telescopic arm 17 is fixedly provided on the side of the second telescopic bottom plate 203. The telescopic arm 17 and the guide arm 16 are slidably fitted together, and each is connected to a set of rotating push-pull structures, and the two sets of rotating push-pull structures are respectively installed on the first vertical plate 101 and the second vertical plate 201; a first through groove 18 is respectively opened on the inner side of the first vertical plate 101 and the second vertical plate 201, and the two first through grooves 18 are respectively used for the guide arm 16 and the telescopic arm 17 to move in the vertical direction.

[0052] The transmission mechanism includes a toothing assembly connected to the threaded sleeve 5 and a sleeve assembly arranged between the first vertical plate 101 and the second vertical plate 201. The toothing assembly includes an assembly plate 6 fixed to the threaded sleeve 5, a gear 7 rotatably mounted on the assembly plate 6, and a rack plate 8 fixedly mounted on the first vertical plate 101. The gear 7 is meshed with the rack plate 8, and the rotating shaft of the gear 7 is connected to the sleeve assembly.

[0053] The sleeve assembly includes a transmission shaft 9 rotatably mounted on the first vertical plate 101 and a transmission tube 10 rotatably mounted on the second vertical plate 201 and slidably sleeved with the transmission shaft 9. A first bevel gear 11 is fixedly mounted on the rotating shaft of the gear 7, a second bevel gear 12 meshing with the first bevel gear 11 is fixedly mounted on the transmission tube 10, and the transmission shaft 9 and the transmission tube 10 are respectively connected to the two sets of the rotating push-pull structures through a transmission belt 13;

[0054] Two strip-shaped protrusions 21 are formed on the outer circumference of the transmission shaft 9 , and two strip-shaped grooves 22 adapted to the strip-shaped protrusions 21 are provided on the inner wall of the transmission tube 10 .

[0055] Please refer again Figure 6 A connecting cross bar 23 is fixed to one side of each of the guide arm 16 and the telescopic arm 17, and the rotating push-pull structure includes a disk 14 rotatably mounted on the first vertical plate 101 or the second vertical plate 201, a column 24 fixed to the eccentric position of the disk 14, and a push-pull rod 15 connecting the column 24 and the connecting cross bar 23. Both ends of the push-pull rod 15 are rotatably connected to the column 24 and the connecting cross bar 23, respectively, and the transmission belt 13 connects the rotating shaft of the disk 14 with the transmission shaft 9 or the transmission pipe 10.

[0056] When the threaded rod 4 rotates forwardly and the distance between the first vertical plate 101 and the second vertical plate 201 gradually increases, the gear 7 moves along the length direction of the rack plate 8. Since the gear 7 is meshed with the rack plate 8, the gear 7 rotates, and the rotation axis of the gear 7 drives the transmission tube 10 to rotate through the first bevel gear 11 and the second bevel gear 12. The transmission tube 10 drives the transmission shaft 9 to rotate through the adaptation relationship between the strip groove 22 and the strip protrusion 21.

[0057] Correspondingly, the transmission shaft 9 and the transmission tube 10 transmit the two discs 14 via the transmission belt 13;

[0058] It should be noted that when the distance between the first vertical plate 101 and the second vertical plate 201 is adjusted to the maximum value (that is, the entire structure reaches the maximum specification), the disk 14 completes a half-circle rotation;

[0059] When the disc 14 rotates, it pushes the connecting cross bar 23 through the column 24 and the push-pull rod 15 to drive the guide arm 16 and the telescopic arm 17 to move downward, so that the guide arm 16 drives the first telescopic bottom plate 103 to gradually slide toward the outside of the deep groove 25, and the telescopic arm 17 drives the second telescopic bottom plate 203 to gradually slide toward the outside of the deep groove 25, so that the height of the entire structure is increased.

[0060] Please refer again Figure 3 and Figure 8 The first guide sleeve 102 is provided with two threaded holes, each of which is provided with an embedded screw 19, and the telescopic plate 202 is provided with two second through grooves 20, which are flush with the threaded holes.

[0061] The setting of the second through groove 20 can ensure that when the structure is in different specifications, the two threaded holes can leak out smoothly, thereby ensuring that the embedded screw 19 can be installed normally;

[0062] Among them, in actual use, the embedded screw 19 is used as an embedded part. The component part is first pre-processed. After the component is installed, the I-beam is placed on the surface and fixed. This method avoids the hole left when the I-beam passes through the wall, reduces the subsequent filling work, optimizes the utilization rate of the formwork, reduces the risk of concrete leakage in this part, and the component can be reused to a certain extent, reducing costs.

[0063] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0064] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A rotatable elevator shaft frame I-beam mounting bracket, comprising a first component (1) and a second component (2), and further comprising: a thread drive mechanism, arranged between the first member (1) and the second member (2), and capable of driving the first member (1) and the second member (2) to move away from or towards each other, so as to change the distance between the first member (1) and the second member (2); an extension mechanism, one set of which is provided at the bottom end of each of the first member (1) and the second member (2), and the two sets of the extension mechanism are connected to a transmission mechanism provided between the first member (1) and the second member (2); The invention is characterized in that when the first component (1) and the second component (2) move away from each other, the transmission mechanism is triggered and causes the extension mechanism to move, and the extension mechanism is capable of performing an extension action; when the first component (1) and the second component (2) move toward each other, the extension mechanism performs a contraction action.

2. The I-beam mounting bracket for a rotatable elevator shaft frame according to claim 1 is characterized in that: The first component (1) comprises a first vertical plate (101) and a guide sleeve (102) fixed to one side of the first vertical plate (101); The second component (2) comprises a second vertical plate (201) arranged opposite to the first vertical plate (101), and a telescopic plate (202) fixed to a side of the second vertical plate (201) facing the first vertical plate (101).

3. The I-beam mounting bracket for a rotatable elevator shaft frame according to claim 2 is characterized in that: The cross-sections of the guide sleeve (102) and the telescopic plate (202) are both arranged in an "L" shape, and the guide sleeve (102) and the telescopic plate (202) are slidably fitted together, and the threaded drive mechanism is arranged between the first vertical plate (101) and the second vertical plate (201).

4. The I-beam mounting bracket for a rotatable elevator shaft frame according to claim 3 is characterized in that: The threaded driving mechanism comprises a threaded rod (4) rotatably mounted on the first vertical plate (101) and a threaded sleeve (5) sleeved on the threaded rod (4) and threadedly connected to the threaded rod (4); The end of the threaded sleeve (5) away from the first vertical plate (101) is fixedly connected to the second vertical plate (201), and a countersunk hole is provided on the side of the first vertical plate (101) away from the second vertical plate (201), and an adjusting knob (3) is provided in the countersunk hole, and the adjusting knob (3) is fixed to the threaded rod (4).

5. The I-beam mounting bracket for a rotatable elevator shaft frame according to claim 4 is characterized in that: The bottom of each of the first vertical plate (101) and the second vertical plate (201) is provided with a deep groove (25), and the extension mechanism comprises a first telescopic bottom plate (103) and a second telescopic bottom plate (203) which are respectively slidably arranged in the two deep grooves (25); The first telescopic bottom plate (103) is slidably fitted with the first vertical plate (101), and the second telescopic bottom plate (203) is slidably fitted with the second vertical plate (201).

6. The I-beam mounting bracket for a rotatable elevator shaft frame according to claim 5, characterized in that: A guide arm (16) is fixedly provided on the side of the first telescopic bottom plate (103), and a telescopic arm (17) is fixedly provided on the side of the second telescopic bottom plate (203). The telescopic arm (17) and the guide arm (16) are slidably fitted and are each connected to a set of rotating push-pull structures. The two sets of rotating push-pull structures are respectively installed on the first vertical plate (101) and the second vertical plate (201); A first through slot (18) is respectively formed on the inner side of the first vertical plate (101) and the second vertical plate (201), and the two first through slots (18) are respectively used for the guide arm (16) and the telescopic arm (17) to move in the vertical direction.

7. The I-beam mounting bracket for a rotatable elevator shaft frame according to claim 6, characterized in that: The transmission mechanism comprises a toothing assembly connected to the threaded sleeve (5) and a sleeve assembly arranged between the first vertical plate (101) and the second vertical plate (201); the toothing assembly comprises an assembly plate (6) fixed to the threaded sleeve (5), a gear (7) rotatably mounted on the assembly plate (6), and a rack plate (8) fixedly mounted on the first vertical plate (101); the gear (7) meshes with the rack plate (8), and the rotating shaft of the gear (7) is connected to the sleeve assembly.

8. The I-beam mounting bracket for a rotatable elevator shaft frame according to claim 7, characterized in that: The sleeve assembly comprises a transmission shaft (9) rotatably mounted on the first vertical plate (101) and a transmission tube (10) rotatably mounted on the second vertical plate (201) and slidably sleeved with the transmission shaft (9); A first bevel gear (11) is fixedly mounted on the rotating shaft of the gear (7), a second bevel gear (12) meshing with the first bevel gear (11) is fixedly mounted on the transmission tube (10), and the transmission shaft (9) and the transmission tube (10) are respectively connected to the two sets of rotating push-pull structures via a transmission belt (13); Two strip-shaped protrusions (21) are formed on the outer circumference of the transmission shaft (9), and two strip-shaped grooves (22) adapted to the strip-shaped protrusions (21) are provided on the inner wall of the transmission tube (10).

9. The I-beam mounting bracket for a rotatable elevator shaft frame according to claim 8, characterized in that: A connecting cross bar (23) is fixed to one side of each of the guide arm (16) and the telescopic arm (17); the rotating push-pull structure comprises a disk (14) rotatably mounted on the first vertical plate (101) or the second vertical plate (201), a column (24) fixed at an eccentric position of the disk (14), and a push-pull rod (15) connecting the column (24) and the connecting cross bar (23); Wherein, the two ends of the push-pull rod (15) are rotatably connected to the column (24) and the connecting cross bar (23) respectively, and the transmission belt (13) connects the rotating shaft of the disc (14) and the transmission shaft (9) or the transmission tube (10).

10. The I-beam mounting bracket for a rotatable elevator shaft frame according to claim 3, characterized in that: The guide sleeve (102) is provided with two threaded holes, each of which is provided with an embedded screw (19), and the telescopic plate (202) is provided with two second through grooves (20), the second through grooves (20) being flush with the threaded holes.