Safe suspension cage for hovering construction in vertical shaft

By designing an emergency support component for fall prevention in the hover construction in the vertical shaft, the cylinder piece is used to drive the inclined support push rod to push the anti-fall prevention support claw plate to abut the inner wall of the vertical shaft, the problem of the lack of anti-fall measures in the existing hanging cage system is solved, and the safety of construction is significantly improved.

CN222892859UActive Publication Date: 2025-05-23SINOHYDRO ENG BUREAU 4
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Patent Information

Application Number
CN202421986856.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-16
Publication Date
2025-05-23
Estimated Expiration
2034-08-16

AI Technical Summary

Technical Problem

The existing cage system lacks effective anti-falling measures, which cannot effectively prevent the free fall of the cage, seriously threatening the life safety of construction workers.

Method used

A safety cage for hovering construction in a vertical shaft is designed, and an anti-fall emergency support component is adopted, including an inclined support push rod, an anti-fall support claw plate and an oil cylinder member. The inclined support push rod is driven to push the anti-fall support claw plate open to make it abut on the inner wall of the vertical shaft to prevent the cage from falling.

Benefits of technology

Effectively prevent the cage from falling when the rope is broken or equipment failure is accidentally broken, which significantly improves the safety of construction and ensures the life safety of construction personnel.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a safety suspension cage for hovering construction in a vertical shaft, which belongs to the technical field of vertical shaft construction, and comprises a vertical shaft hovering suspension cage assembly which comprises a concrete tank, support upright posts symmetrically welded on the outer wall of the peripheral side of the concrete tank and a support bottom frame welded at the bottom ends of the support upright posts; the utility model discloses an anti-falling emergency supporting assembly. Comprising inclined supporting push rods symmetrically hinged between every two adjacent supporting stand columns, anti-falling supporting claw plates which are hinged to the free ends of the inclined supporting push rods, abut against the inner wall of the vertical shaft and are used for anti-falling supporting of the vertical shaft hovering cage assembly, and oil cylinder pieces symmetrically installed between every two adjacent supporting stand columns and located below the inclined supporting push rods. A piston rod of the oil cylinder part drives the inclined supporting push rod to be pushed away in a hinged state, so that the anti-falling supporting claw plate is pushed to abut against the inner wall of the vertical shaft by the driving force of the oil cylinder part; the inner wall of the bottom end of each anti-falling supporting claw plate extends downwards to be integrally connected with a sawtooth claw, and the sawtooth claws abut against the inner wall of the vertical shaft.
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Description

Technical Field

[0001] The utility model belongs to the technical field of shaft construction, in particular to a safety hanging cage used for suspended construction in a shaft. Background Art

[0002] Shaft construction is the general term for the excavation, walling (permanent support) and equipment installation of vertical shafts during the mining of underground deposits. Depending on the geology and hydrogeology of the rock strata through which the shaft passes, shaft construction is divided into two categories: general construction and special construction for the topsoil section and bedrock section. When constructing in a shaft, a cage is usually required to transport concrete materials.

[0003] Existing cage systems often have the following problems: Traditional cages lack effective anti-fall measures and cannot effectively prevent the cage from free falling when the rope breaks accidentally or the equipment fails, posing a serious threat to the life safety of construction workers. Utility Model Content

[0004] The utility model aims to provide a safety cage for suspended construction in a shaft to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a safety cage for suspended construction in a shaft, comprising:

[0006] A shaft suspension cage assembly includes a concrete tank, support columns symmetrically welded to the outer wall of the concrete tank, and a support bottom frame welded to the bottom end of the support column;

[0007] The anti-fall emergency support assembly comprises an inclined support push rod symmetrically hinged between two adjacent support columns, an anti-fall support claw plate hinged at the free end of the inclined support push rod and abutting against the inner wall of the shaft for anti-fall support of the shaft suspended cage assembly, and an oil cylinder symmetrically installed between the two adjacent support columns and located below the inclined support push rod, wherein the piston rod of the oil cylinder drives the inclined support push rod to be pushed open in a hinged state, so that the anti-fall support claw plate is pushed by the driving force of the oil cylinder to abut against the inner wall of the shaft;

[0008] Wherein, the inner wall of the bottom end of each anti-fall support claw plate extends downward and is integrally connected with a serrated claw, and the serrated claw abuts against the inner wall of the vertical shaft.

[0009] Preferably, fixed support rods are symmetrically welded between two adjacent support columns and on both sides of the concrete tank, and second hinged ear plates are symmetrically welded at middle positions of opposite sides of the two fixed support rods.

[0010] Preferably, the top end of the inclined support push rod is hinged between two adjacent second hinged ear plates, and the end of the inclined support push rod away from the second hinged ear plate is hinged to the back side of the anti-fall support claw plate through a pin shaft.

[0011] Preferably, in this solution, a U-shaped fixing plate is welded below each of the fixed support rods and between two adjacent supporting columns, and the cylinder member is fixedly installed at a middle position of an inner wall of the U-shaped fixing plate.

[0012] Preferably, the two anti-fall support claw plates are bonded with rubber anti-skid pads on opposite sides thereof, and the rubber anti-skid pads are in frictional contact with the inner wall of the shaft.

[0013] Preferably, a hook is welded on the outer wall of one end of each of the inclined support push rods away from the second hinged ear plate and on the back side of the anti-fall support claw plate, and a tension spring is hung between two adjacent hooks.

[0014] Preferably, a slide groove is provided on the back side of each of the inclined support push rods, and an articulated slider is slidably connected in the slide groove, and the articulated slider is hinged to the free end of the piston rod through the pin shaft.

[0015] Preferably, in the present solution, a positioning rod passing through the articulated slider is fixedly installed in the inner cavity of the slide groove, and the articulated slider is positioned and slid in the slide groove and on the positioning rod.

[0016] In this solution, the bottom end of the concrete tank is hinged with a first blocking baffle and a second blocking baffle, respectively, a hinged pull rod is welded on one side of the second blocking baffle, a connecting rod is hinged on the free end of the hinged pull rod, and the second blocking baffle is meshedly connected with the top end of the first blocking baffle. The first blocking baffle and the second blocking baffle can move away from each other to open the bottom outlet of the concrete tank, and the first blocking baffle and the second blocking baffle can move centripetally to close the bottom outlet of the concrete tank.

[0017] Preferably, a first hinged ear plate is symmetrically welded to one side of the top surface of the supporting bottom frame, a pull rod is hinged between two of the first hinged ear plates, an inner wall of the pull rod is welded to the connecting rod, and a plurality of lifting rings are symmetrically welded to the top of the concrete tank.

[0018] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0019] The safety cage used for suspended construction in the shaft is provided with an anti-fall emergency support assembly. When the cage is in the shaft, the anti-fall support claw plate can be promptly unfolded and abutted against the inner wall of the shaft to prevent the cage from falling further, thereby significantly improving the safety of operation. The anti-fall emergency support assembly can ensure that the cage will not fall suddenly in an emergency, thereby protecting the lives of construction workers. The anti-fall emergency support assembly drives the tilt support push rod through the oil cylinder, thereby controlling the opening and closing of the anti-fall support claw plate, thereby ensuring the stability of the cage in an emergency.

[0020] The combined use of support columns, support bottom frames and fixed support rods increases the overall stability of the cage, especially when working in the shaft, which can better resist external interference and maintain the stable operation of the cage. The strengthening of the support structure allows the cage to remain stable even under harsh conditions, reducing the safety hazards caused by shaking. The coordinated use of cylinder parts, piston rods, articulated sliders and other components realizes the automatic control of the opening and closing of the outlet, improves the accuracy and reliability of the opening and closing, and the telescopic action of the piston rod accurately controls the opening and closing of the outlet through the articulated slider, ensuring that the concrete can be unloaded quickly and safely. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the connection structure of the movable blocking baffle of the utility model;

[0024] Figure 3 This is a schematic diagram of the installation structure of the anti-fall support claw plate of the utility model;

[0025] Figure 4 This is a schematic diagram of the connection structure of the tension spring of the utility model;

[0026] Figure 5 It is a structural schematic diagram of the back side of the inclined support push rod of the utility model.

[0027] Description of reference numerals:

[0028] In the figure: 1. Shaft suspension cage assembly; 2. Concrete tank; 3. Support column; 4. Support bottom frame; 5. First hinged ear plate; 6. Pull rod; 7. Fixed support rod; 8. Inclined support push rod; 9. Anti-fall emergency support assembly; 10. First blocking baffle; 11. Connecting rod; 12. Articulated pull rod; 13. Second blocking baffle; 14. U-shaped fixed plate; 15. Second hinged ear plate; 16. Cylinder member; 17. Piston rod; 18. Anti-fall support claw plate; 19. Rubber anti-slip pad; 20. Serrated claw; 21. Hook; 22. Tension spring; 23. Slide; 24. Articulated slider; 25. Pin; 26. Positioning rod. DETAILED DESCRIPTION

[0029] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0030] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0031] This embodiment provides Figures 1 to 5 A safety cage for suspended construction in a shaft is shown, comprising: a shaft suspended cage assembly 1 and an anti-fall emergency support component 9.

[0032] In this embodiment, the shaft suspension cage assembly 1 includes a concrete tank 2, support columns 3 symmetrically welded to the outer wall of the concrete tank 2, and a support bottom frame 4 welded to the bottom end of the support column 3; the concrete tank 2 is used to load concrete, and as a carrier of concrete, it ensures that the concrete can be smoothly transported to the construction site, realizes the effective transportation of concrete, and reduces the risk of manual handling. The support column 3 is used to support the concrete tank 2 and provide structural support to ensure the stability of the concrete tank 2 in the shaft, thereby improving the safety and reliability of the entire device.

[0033] In this embodiment, the anti-falling emergency support assembly 9 includes an inclined support push rod 8 symmetrically hinged between two adjacent support columns 3, an anti-falling support claw plate 18 hinged at the free end of the inclined support push rod 8 and abutting against the inner wall of the shaft for anti-falling support of the shaft suspended cage assembly 1, and a cylinder member 16 symmetrically installed between two adjacent support columns 3 and located below the inclined support push rod 8. The piston rod 17 of the cylinder member 16 drives the inclined support push rod 8 to be pushed open in an articulated state, so that the anti-falling support claw plate 18 is pushed to abut against the inner wall of the shaft by the driving force of the cylinder member 16; the inclined support push rod 8 is used to control the opening and closing of the anti-falling support claw plate 18, and the position is changed by the drive of the cylinder member 16, so that the reliable opening and closing of the anti-falling support claw plate 18 is realized. The anti-falling emergency support assembly 9 is used to prevent the cage from accidentally falling. The inclined support push rod 8 is controlled by the drive of the cylinder member 16, and then the anti-falling support claw plate 18 is controlled, thereby improving the safety of the cage. The oil cylinder 16 provides power to drive the tilt support push rod 8 , and the position of the tilt support push rod 8 is changed by the extension and retraction of the piston rod 17 , thereby realizing automatic control of the tilt support push rod 8 .

[0034] In this embodiment, the inner wall of the bottom end of each anti-falling support claw plate 18 extends downward and is integrally connected with a serrated claw 20, which abuts against the inner wall of the shaft. The serrated claw 20 is used to increase the friction between the anti-falling support claw plate 18 and the inner wall of the shaft, providing additional friction to ensure the stability of the anti-falling support claw plate 18.

[0035] In this embodiment, fixed support rods 7 are symmetrically welded between two adjacent support columns 3 and on both sides of the concrete tank 2 , and second hinged ear plates 15 are symmetrically welded at the middle positions of opposite sides of the two fixed support rods 7 .

[0036] In this embodiment, the top end of the inclined support push rod 8 is hinged between two adjacent second hinged ear plates 15, and the end of the inclined support push rod 8 away from the second hinged ear plate 15 is hinged to the back side of the anti-fall support claw plate 18 through a pin shaft 25.

[0037] In this embodiment, a U-shaped fixing plate 14 is welded below each fixed support rod 7 and between two adjacent supporting columns 3 , and the cylinder member 16 is fixedly installed at the middle position of the inner wall of the U-shaped fixing plate 14 .

[0038] In this embodiment, the two anti-falling support claw plates 18 are bonded with rubber anti-skid pads 19 on the opposite sides, and the rubber anti-skid pads 19 are in friction contact with the inner wall of the shaft. The rubber anti-skid pads 19 are used to increase the friction between the anti-falling support claw plates 18 and the inner wall of the shaft, provide additional friction, and ensure the stability of the anti-falling support claw plates 18.

[0039] In this embodiment, a hook 21 is welded on the outer wall of one end of each tilting support push rod 8 away from the second hinged ear plate 15 and on the back of the anti-falling support claw plate 18, and a tension spring 22 is hung between two adjacent hooks 21. The tension spring 22 is used to pull back the tilting support push rod 8 when the oil cylinder 16 contracts, provide a rebound force, and realize the automatic return of the tilting support push rod 8. At the same time, it can prevent the anti-falling support claw plate 18 from being reversely set due to its own weight at the hinged connection at the bottom end of the tilting support push rod 8 to prevent it from contacting the inner wall of the shaft. Under the tension of the tension spring 22, the rubber anti-skid pad 19 of the anti-falling support claw plate 18 is turned toward the inner wall of the shaft.

[0040] In this embodiment, a slide groove 23 is provided on the back of each tilting support push rod 8, and a hinged slider 24 is slidably connected in the slide groove 23. The hinged slider 24 is hinged to the free end of the piston rod 17 through a pin 25. The hinged slider 24 is used to connect the piston rod 17 and the tilting support push rod 8, so that the piston rod 17 and the tilting support push rod 8 form a rigid connection, ensuring a stable connection between the piston rod 17 and the tilting support push rod 8. The slide groove 23 is used to guide the piston rod 17, so that the piston rod 17 can move smoothly. The positioning rod 26 is used to guide the hinged slider 24, so that the hinged slider 24 can move smoothly in the slide groove 23, ensuring the smooth movement of the hinged slider 24.

[0041] In this embodiment, a positioning rod 26 passing through the articulated slider 24 is fixedly installed in the inner cavity of the slide groove 23 , and the articulated slider 24 is positioned and slid in the slide groove 23 and on the positioning rod 26 .

[0042] In this embodiment, the bottom end of the concrete tank 2 is hinged with a first blocking baffle 10 and a second blocking baffle 13, respectively. A hinged pull rod 12 is welded on one side of the second blocking baffle 13. The free end of the hinged pull rod 12 is hinged with a connecting rod 11. The second blocking baffle 13 is meshed and connected with the top of the first blocking baffle 10. The first blocking baffle 10 and the second blocking baffle 13 can move in opposite directions to open the bottom outlet of the concrete tank 2, and the first blocking baffle 10 and the second blocking baffle 13 can move centripetally to close the bottom outlet of the concrete tank 2. The first blocking baffle 10 and the second blocking baffle 13 control the opening and closing of the outlet together, and move through the action of the hinged pull rod 12 and the connecting rod 11, so as to realize the reliable closure and opening of the outlet. The hinged pull rod 12 connects the second blocking baffle 13 and the connecting rod 11, transmits power, changes the position of the second blocking baffle 13, and realizes the opening and closing action of the second blocking baffle 13.

[0043] In this embodiment, a first hinged ear plate 5 is symmetrically welded to one side of the top surface of the supporting bottom frame 4, a tie rod 6 is hinged between the two first hinged ear plates 5, the inner wall of the tie rod 6 is welded to the connecting rod 11, and a plurality of lifting rings are symmetrically welded to the top of the concrete tank 2. The tie rod 6 is used to connect the connecting rod 11 and control the opening and closing of the first blocking baffle 10 and the second blocking baffle 13, transmit power, and realize the reliable opening and closing of the first blocking baffle 10 and the second blocking baffle 13.

[0044] Working principle:

[0045] The safety cage used for suspended construction in the shaft, the tilt support push rod 8 is used to control the opening and closing of the anti-fall support claw plate 18, and the anti-fall support claw plate 18 is used to abut the inner wall of the shaft to prevent the cage from falling. The cylinder member 16 drives the tilt support push rod 8 through the extension and contraction of the piston rod 17, thereby controlling the opening and closing of the anti-fall support claw plate 18. The serrated claw 20 is integrally connected to the inner wall of the bottom end of the anti-fall support claw plate 18 to increase the friction with the inner wall of the shaft to ensure the stable support of the cage. The rubber anti-skid pad 19 is bonded to the opposite side of the anti-fall support claw plate 18 to increase the friction with the inner wall of the shaft.

[0046] The first blocking baffle 10 and the second blocking baffle 13 are used to control the opening and closing of the bottom outlet of the concrete tank 2. The hinged pull rod 12 cooperates with the connecting rod 11 to pull the second blocking baffle 13. The connecting rod 11 is connected with the pull rod 6 to transmit power to the hinged pull rod 12. The pull rod 6 is installed on the supporting bottom frame 4 through the first hinged ear plate 5, which is used to manually operate the connecting rod 11, thereby controlling the opening and closing of the first blocking baffle 10 and the second blocking baffle 13. The first hinged ear plate 5 and the second hinged ear plate 15 are used to articulate the pull rod 6 and the tilting support push rod 8 respectively.

[0047] The first blocking baffle 10 and the second blocking baffle 13 are connected by meshing to close the bottom outlet of the concrete tank 2. The pull rod 6 is operated manually or by other means to be pulled outward. The pull rod 6 pulls the second blocking baffle 13 backward through the connecting rod 11 and the hinged pull rod 12. Due to the meshing connection between the first blocking baffle 10 and the second blocking baffle 13, the second blocking baffle 13 will be separated from the first blocking baffle 10 when retreating, and the two will be separated back to back, opening the bottom outlet of the concrete tank 2, and the concrete can be discharged. The pull rod 6 is operated manually or by other means to be pushed inward. The pull rod 6 releases the pulling force on the second blocking baffle 13 through the connecting rod 11 and the hinged pull rod 12. The first blocking baffle 10 and the second blocking baffle 13 are reset under the action of their own gravity or the action of spring force, and the meshing connection is closed again, thereby closing the bottom outlet of the concrete tank 2.

[0048] The anti-falling support claw plate 18 is in a retracted state and does not abut against the inner wall of the shaft. The piston rod 17 of the oil cylinder 16 is extended, pushing the tilting support push rod 8 to push the anti-falling support claw plate 18 to the inner wall of the shaft in a hinged state. The serrated claw 20 and the rubber anti-skid pad 19 of the anti-falling support claw plate 18 abut against the inner wall of the shaft to ensure the stable support of the cage. The piston rod 17 of the oil cylinder 16 is shortened, and the tilting support push rod 8 is retracted under the action of the tension spring 22. The anti-falling support claw plate 18 is separated from the inner wall of the shaft. The fixed support rod 7 is symmetrically welded between two adjacent support columns 3 to increase the structural stability. The U-shaped fixed plate 14 is welded below the fixed support rod 7 and is located between two adjacent support columns 3 for installing the oil cylinder 16. The hook 21 is welded on the tilting support push rod 8 and the anti-falling support claw plate 18 for connecting the tension spring 22. The tension spring 22 is connected between the hooks 21 to pull back the tilting support push rod 8 when the oil cylinder 16 shrinks.

[0049] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety cage for suspended construction in a shaft, characterized in that: include: A vertical shaft suspension cage assembly (1) comprises a concrete tank (2), support columns (3) symmetrically welded to the outer wall of the concrete tank (2), and a support bottom frame (4) welded to the bottom end of the support column (3); The anti-fall emergency support assembly (9) comprises an inclined support push rod (8) symmetrically hinged between two adjacent support columns (3), an anti-fall support claw plate (18) hinged to the free end of the inclined support push rod (8) and abutting against the inner wall of the shaft for anti-fall support of the shaft suspended cage assembly (1), and a cylinder member (16) symmetrically installed between the two adjacent support columns (3) and located below the inclined support push rod (8), wherein the piston rod (17) of the cylinder member (16) drives the inclined support push rod (8) to be pushed open in a hinged state, so that the anti-fall support claw plate (18) is pushed by the driving force of the cylinder member (16) to abut against the inner wall of the shaft; The inner wall at the bottom end of each anti-fall support claw plate (18) extends downward and is integrally connected with a serrated claw (20), and the serrated claw (20) abuts against the inner wall of the shaft.

2. A safety cage for suspended construction in a shaft according to claim 1, characterized in that: Fixed support rods (7) are symmetrically welded between two adjacent support columns (3) and on both sides of the concrete tank (2), and second hinged ear plates (15) are symmetrically welded at the middle positions of the opposite sides of the two fixed support rods (7).

3. A safety cage for suspended construction in a shaft according to claim 2, characterized in that: The top end of the tilting support push rod (8) is hinged between two adjacent second hinged ear plates (15), and the end of the tilting support push rod (8) away from the second hinged ear plate (15) is hinged to the back side of the anti-fall support claw plate (18) through a pin shaft (25).

4. A safety cage for suspended construction in a shaft according to claim 3, characterized in that: A U-shaped fixing plate (14) is welded below each fixed support rod (7) and between two adjacent supporting columns (3), and the oil cylinder component (16) is fixedly mounted at a middle position of the inner wall of the U-shaped fixing plate (14).

5. A safety cage for suspended construction in a shaft according to claim 4, characterized in that: The two anti-falling support claw plates (18) are both bonded with rubber anti-skid pads (19) on the opposite sides thereof, and the rubber anti-skid pads (19) are in frictional contact with the inner wall of the shaft.

6. A safety cage for suspended construction in a shaft according to claim 5, characterized in that: A hook (21) is welded on the outer wall of one end of each inclined support push rod (8) away from the second hinged ear plate (15) and on the back side of the anti-fall support claw plate (18), and a tension spring (22) is hung between two adjacent hooks (21).

7. A safety cage for suspended construction in a shaft according to claim 6, characterized in that: A slide groove (23) is provided on the back of each of the inclined support push rods (8), and a hinged slider (24) is slidably connected in the slide groove (23). The hinged slider (24) is hinged to the free end of the piston rod (17) through the pin shaft (25).

8. A safety cage for suspended construction in a shaft according to claim 7, characterized in that: A positioning rod (26) is fixedly installed in the inner cavity of the slide groove (23) and is passed through the hinged slider (24). The hinged slider (24) is positioned and slid in the slide groove (23) and on the positioning rod (26).

9. A safety cage for suspended construction in a shaft according to claim 8, characterized in that: The bottom end of the concrete tank (2) is hinged with a first blocking baffle (10) and a second blocking baffle (13), respectively; a hinged pull rod (12) is welded to one side of the second blocking baffle (13); a connecting rod (11) is hinged to the free end of the hinged pull rod (12); and the second blocking baffle (13) is meshingly connected with the top end of the first blocking baffle (10).

10. A safety cage for suspended construction in a shaft according to claim 9, characterized in that: A first hinged ear plate (5) is symmetrically welded to one side of the top surface of the supporting bottom frame (4), a pull rod (6) is hinged between the two first hinged ear plates (5), the inner wall of the pull rod (6) is welded to the connecting rod (11), and a plurality of lifting rings are symmetrically welded to the top end of the concrete tank (2).