A vertical shaft operation anti-falling and buffering protection structure

Abstract

The utility model discloses a vertical shaft operation anti -falling buffer protection structure relates to vertical shaft anti -falling technical field, the utility model discloses a mounting ring, first arc plate, the quantity is multiple, and multiple first arc plate is in annular array distribution and is installed in the bottom of mounting ring, first adjusting assembly, first adjusting assembly is installed in the bottom end of mounting ring, and it is used to drive multiple first arc plate to gather or separate and open, the utility model discloses a first arc plate and first adjusting assembly fast positioning form rigid intercepting surface, and the overall position of fixing device, and second arc plate cooperation guard board and buffer component, and the falling impact is converted into elastic potential energy and is gradually attenuated, and the structural peak load is reduced significantly, and the protectivity of this device is greatly improved, and this device is installed in the vertical shaft of different diameters, need not cutting welding to adapt to different well diameter and lining error, and the dismounting is efficient, and is repeatedly used, and the construction efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of vertical shaft fall prevention technology, specifically to a vertical shaft operation fall prevention buffer protection structure. Background Technology

[0002] During mine shaft operations, the complex working environment presents safety hazards such as loose and falling rocks from the shaft walls and malfunctions in hoisting equipment, which can easily lead to falling objects or personnel accidents, posing a serious threat to the lives of workers.

[0003] To address the issue of loose rocks falling from the inner walls of shafts, the common practice is to install rigid covers or simple metal mesh inside the shaft. While these structures can prevent rocks from falling to some extent, they have certain drawbacks. For example, their cushioning performance is insufficient; they hardly deform when impacted by falling objects, and the impact force is directly transmitted to the working surface, easily causing structural damage. Furthermore, they have poor adaptability. The diameter of the shaft varies due to design changes, lining errors, or different construction stages. Traditional protective structures have fixed dimensions and cannot be quickly adjusted to fit different shaft diameters. On-site installation often requires cutting, welding shims, or re-drilling, which is cumbersome, delays the construction period, and is inconvenient for users. Utility Model Content

[0004] The purpose of this utility model is to provide a fall-prevention and buffer protection structure for vertical shaft operations in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution: a vertical shaft operation fall protection and buffer structure, comprising: a mounting ring; multiple first arc-shaped plates, which are slidably installed at the bottom of the mounting ring in a circular array; a first adjusting component, which is installed at the bottom end of the mounting ring and is used to drive the multiple first arc-shaped plates to close or separate and unfold; multiple second arc-shaped plates, which are slidably installed at the top of the mounting ring in a circular array, and a second adjusting component is installed at the top end of the mounting ring for driving the multiple second arc-shaped plates to close or separate and unfold; and multiple protective plates, which are respectively installed at the top of the multiple second arc-shaped plates, and a buffer component is installed between the bottom of the protective plate and the top of the second arc-shaped plate.

[0006] Furthermore, the first adjustment component includes a positioning ring fixedly installed on the inner circumference of the mounting ring, an internal gear ring rotatably installed on the bottom of the positioning ring, a plurality of main gears rotatably installed on the bottom of the positioning ring, all of the plurality of main gears meshing with the internal gear ring, a spur gear plate fixedly installed on the top of a plurality of first arc-shaped plates, the plurality of spur gear plates meshing with the plurality of main gears respectively, and a drive motor for driving one of the main gears to rotate is fixedly installed on the positioning ring.

[0007] Furthermore, multiple insert plates are fixedly installed in an array on the outer periphery of each of the first arc-shaped plates, and the insert plates are triangular in shape.

[0008] Furthermore, each of the first arc-shaped plates has a contact plate fixedly installed at its bottom, and the outer periphery of each of the contact plates is provided with anti-slip texture.

[0009] Furthermore, the buffer assembly includes a plurality of buffer springs fixedly installed between the bottom of the protective plate and the top of the second arc-shaped plate, and a plurality of dampers are fixedly installed between the bottom of the protective plate and the top of the second arc-shaped plate.

[0010] Furthermore, a cushioning rubber pad is fixedly installed on the top of each of the second arc-shaped plates.

[0011] Furthermore, a ventilation hood is detachably installed between the plurality of second arc-shaped plates, and a ventilation fan is fixedly installed inside the ventilation hood.

[0012] Furthermore, a magnetic ring is fixedly installed on the outer periphery of the ventilation hood, and the magnetic ring is magnetically connected to the second arc-shaped plate.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention uses a first arc-shaped plate and a first adjustment component to quickly position and form a rigid interception surface, fixing the overall position of the device. The second arc-shaped plate, together with the protective plate and the buffer component, converts the falling impact into elastic potential energy and attenuates it step by step, significantly reducing the peak load on the structure and greatly improving the protective performance of the device. Moreover, this device can be installed in vertical shafts of different diameters without cutting or welding, adapting to different shaft diameters and lining errors. It is efficient to assemble and disassemble, and can be reused, greatly improving construction efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a utility model Figure 1 A three-dimensional sectional view of the structure;

[0017] Figure 3 This is a utility model Figure 1 Another three-dimensional structural sectional view;

[0018] Figure 4 This is a utility model Figure 1 Another three-dimensional structural sectional view;

[0019] Figure 5 This is a utility model Figure 1 The front view of the structural diagram.

[0020] Reference numerals: 1. Mounting ring; 2. First arc-shaped plate; 3. First adjusting assembly; 31. Positioning ring; 32. Internal gear ring; 33. Main gear; 34. Straight gear plate; 35. Drive motor; 4. Second arc-shaped plate; 5. Second adjusting assembly; 6. Protective plate; 7. Buffer assembly; 71. Buffer spring; 72. Damper; 8. Insert plate; 9. Contact plate; 10. Buffer rubber pad; 11. Ventilation hood; 12. Ventilation fan; 13. Magnetic ring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0022] like Figure 1-5 As shown, an embodiment of this utility model provides a fall protection and buffer structure for shaft operations, comprising: a mounting ring 1;

[0023] Multiple first arc-shaped plates 2 are arranged in a circular array and slidably installed on the bottom of the mounting ring 1.

[0024] The first adjustment component 3 is installed at the bottom end of the mounting ring 1 and is used to drive the multiple first arc-shaped plates 2 to close or separate and unfold.

[0025] There are multiple second arc-shaped plates 4, which are arranged in a ring array and slidably installed on the top of the mounting ring 1. The top of the mounting ring 1 is equipped with a second adjustment component 5 for driving the multiple second arc-shaped plates 4 to close or separate and unfold.

[0026] Multiple protective plates 6 are installed on top of multiple second arc-shaped plates 4. A buffer assembly 7 is installed between the bottom of the protective plate 6 and the top of the second arc-shaped plate 4. Openings are provided between the multiple first arc-shaped plates 2 and between the multiple second arc-shaped plates 4 to facilitate ventilation. The second adjusting assembly 5 has the same structure and working principle as the first adjusting assembly 3, and will not be described further.

[0027] The working principle of this vertical shaft operation fall protection and buffer structure is as follows: During the vertical shaft construction phase, the entire device is lowered into the designated position inside the shaft using a hoisting tool, and fixed to the wellhead or the inner wall of the section requiring protection. Specifically, the first adjusting component 3 drives multiple first arc-shaped plates 2 arranged in a ring array to slide radially synchronously at the bottom of the mounting ring 1, so that the outer edge of each first arc-shaped plate 2 fits against the inner diameter of the well wall. A slot can be set on the inner wall of the vertical shaft on the same plane as the first arc-shaped plates 2, allowing the ends of the first arc-shaped plates 2 to be inserted for further fixation. This achieves both rapid clamping against the well wall and the formation of a first-level rigid interception surface to prevent large rocks from falling directly. Simultaneously, when workers need to enter the shaft, the second adjusting component 5 drives multiple second arc-shaped plates 4 arranged in a ring array at the top of the mounting ring 1 to slide radially and unfold, so that the outer edge of each second arc-shaped plate 4 also fits against the well wall. It can also be partially closed when workers pass through, selecting the optimal position for protection. The protective plate 6 installed on top of the second arc plate 4 forms a flexible connection with the second arc plate 4 through the buffer component 7. When loose rock blocks fall from the well wall, they first impact the protective plate 6. The buffer component 7 generates controllable deformation, converting the instantaneous impact kinetic energy into elastic potential energy and gradually dissipating it. The impact force is then attenuated by buffering before being transmitted to the second arc plate 4 and the mounting ring 1, avoiding the rigid structure from directly bearing the peak load, thereby significantly reducing the risk of structural damage. If it is necessary to adjust the structure to adapt to different well diameters or to change the well diameter due to lining errors, it is only necessary to operate the first adjustment component 3 and the second adjustment component 5 again to drive the first arc plate 2 and the second arc plate 4 to extend and retract radially. It can be quickly disassembled and reused without on-site cutting or welding. Throughout the process, the synergistic effect of the protective plate 6 and the buffer component 7 not only ensures the buffering and energy absorption effect, but also overcomes the defects of poor buffering performance and weak adaptability of traditional rigid cover plates or metal mesh through graded interception and flexible energy absorption design, ensuring safe and efficient shaft operation.

[0028] like Figure 3-4 As shown, in some embodiments, the first adjusting component 3 includes a positioning ring 31 fixedly installed on the inner circumference of the mounting ring 1. An internal gear ring 32 is rotatably installed on the bottom of the positioning ring 31. A plurality of main gears 33 are rotatably installed on the bottom of the positioning ring 31, and the plurality of main gears 33 mesh with the internal gear ring 32. A spur gear plate 34 is fixedly installed on the top of a plurality of first arc-shaped plates 2, and the plurality of spur gear plates 34 mesh with the plurality of main gears 33 respectively. A drive motor 35 for driving one of the main gears 33 to rotate is fixedly installed on the positioning ring 31.

[0029] The drive motor 35 is fixed on the positioning ring 31, and its output end directly drives one of the main gears 33 to rotate. The main gear 33 drives the entire internal gear ring 32 to rotate synchronously around the center of the positioning ring 31 by meshing with the internal gear ring 32. On the other hand, the synchronous rotation of the internal gear ring 32 further drives all the other main gears 33 to rotate in the same direction and at the same speed, forming a multi-point linkage gear transmission chain. Each main gear 33 meshes with the straight tooth plate 34 fixed at the bottom of the corresponding first arc plate 2, converting the rotational motion of the main gear 33 into the linear radial displacement of the straight tooth plate 34, so that the multiple first arc plates 2 can be synchronously closed or separated and unfolded at the bottom of the mounting ring 1.

[0030] like Figure 4 As shown, in some embodiments, multiple insert plates 8 are fixedly installed in an array on the outer periphery of the first arc-shaped plate 2, and the insert plates 8 are triangular in shape.

[0031] The triangular inserts 8 arranged in an array on the outer periphery of the first arc-shaped plate 2, when driven by the first adjustment component 3 to radially expand and fit against the well wall, insert the acute-angled tips of the triangles into joints, fissures, or uneven areas on the surface of the well wall rock mass, forming a multi-point wedge-type anchoring. This not only further enhances the frictional locking effect between the first arc-shaped plate 2 and the well wall through the radial component force generated by the triangular inclined surface, but also forms a continuous sawtooth profile on the outer edge of the first arc-shaped plate 2, effectively increasing the contact area and engagement depth with the well wall, avoiding single-point overload, and enabling the first arc-shaped plate 2 to evenly distribute the impact force to the well wall rock mass through the inserts 8 when impacted by falling objects, reducing the risk of structural deformation.

[0032] like Figure 1 As shown, in some embodiments, a contact plate 9 is fixedly installed on the bottom of each of the plurality of first arc-shaped plates 2, and anti-slip textures are provided on the outer periphery of each of the plurality of contact plates 9.

[0033] The bottom of each of the multiple first arc-shaped plates 2 is fixedly installed with a contact plate 9, which increases the contact area with the inner wall of the shaft. The anti-slip texture on its outer periphery significantly increases the static friction coefficient between the contact plate 9 and the rock surface of the shaft wall when the first arc-shaped plate 2 is radially expanded and pressed against the shaft wall. This effectively prevents the first arc-shaped plate 2 from slipping during impact or vibration, and ensures the positional stability of the entire protective structure inside the shaft.

[0034] like Figure 5 As shown, in some embodiments, the buffer assembly 7 includes a plurality of buffer springs 71 fixedly installed between the bottom of the protective plate 6 and the top of the second arc-shaped plate 4, and a plurality of dampers 72 fixedly installed between the bottom of the protective plate 6 and the top of the second arc-shaped plate 4. A buffer rubber pad 10 is fixedly installed on the top of each of the plurality of second arc-shaped plates 4.

[0035] When a falling rock hits the protective plate 6, the buffer spring 71 and the damper 72 are compressed. The rebound force generated by the compressed buffer spring 71, together with the damper 72, forms a buffering and shock-absorbing effect, suppressing the reciprocating oscillation of the protective plate 6 and achieving buffering and shock-absorbing protection. The buffer rubber pad 10 fixed to the top of the second arc plate 4 provides buffering when the protective plate 6 is pressed to its limit due to its high damping characteristics. Through the hysteretic deformation of the rubber material, it further absorbs the residual impact energy and evenly distributes it to the second arc plate 4, avoiding local stress concentration and further improving the buffering and protection effect.

[0036] like Figure 2 As shown, in some embodiments, a ventilation hood 11 is detachably installed between a plurality of second arc-shaped plates 4, and a ventilation fan 12 is fixedly installed inside the ventilation hood 11. The ventilation hood 11 is inserted into the opening.

[0037] Activating the ventilation fan 12 creates a forced convection channel between the wellhead and the underground, quickly drawing out polluted air or introducing fresh air through the opening. This ensures that the fall protection function is not affected, while continuous ventilation reduces the concentration of gas and dust, eliminating the risk of explosion and poisoning. The ventilation hood 11 is used to protect the ventilation fan 12.

[0038] like Figure 1 As shown, in some embodiments, a magnetic ring 13 is fixedly installed on the outer periphery of the ventilation hood 11, and the magnetic ring 13 is magnetically connected to the second arc-shaped plate 4.

[0039] When installation is required, simply insert the ventilation cover 11 into the opening, and the magnetic ring 13 will magnetically attach to the top of multiple second arc-shaped plates 4. The installation operation is simple and convenient.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fall-prevention and buffer protection structure for vertical shaft operations, characterized in that, include: Mounting ring (1); The first arc-shaped plate (2) is multiple in number, and the multiple first arc-shaped plates (2) are arranged in a ring array and slidably installed on the bottom of the mounting ring (1); The first adjustment component (3) is installed at the bottom end of the mounting ring (1) and is used to drive the multiple first arc plates (2) to close or separate and unfold. There are multiple second arc-shaped plates (4), which are arranged in a ring array and slidably installed on the top of the mounting ring (1). The top of the mounting ring (1) is equipped with a second adjustment component (5) for driving the multiple second arc-shaped plates (4) to close or separate and unfold. There are multiple protective plates (6), and the multiple protective plates (6) are respectively installed on the top of multiple second arc plates (4). A buffer assembly (7) is installed between the bottom of the protective plate (6) and the top of the second arc plate (4).

2. The vertical shaft operation fall protection and buffer structure according to claim 1, characterized in that, The first adjustment component (3) includes a positioning ring (31) fixedly installed on the inner circumference of the mounting ring (1). An internal gear ring (32) is rotatably installed on the bottom of the positioning ring (31). Multiple main gears (33) are rotatably installed on the bottom of the positioning ring (31). The multiple main gears (33) mesh with the internal gear ring (32). A straight tooth plate (34) is fixedly installed on the top of the multiple first arc-shaped plates (2). The multiple straight tooth plates (34) mesh with the multiple main gears (33) respectively. A drive motor (35) for driving one of the main gears (33) to rotate is fixedly installed on the positioning ring (31).

3. The fall-prevention and buffer protection structure for vertical shaft operations according to claim 1, characterized in that, Multiple insert plates (8) are fixedly installed in an array on the outer periphery of the first arc plate (2), and the insert plates (8) are triangular.

4. The fall-prevention and buffer protection structure for vertical shaft operations according to claim 1, characterized in that, Each of the first arc-shaped plates (2) has a contact plate (9) fixedly installed at its bottom, and the outer periphery of each of the contact plates (9) is provided with anti-slip texture.

5. The fall protection and buffer structure for vertical shaft operations according to claim 1, characterized in that, The buffer assembly (7) includes a plurality of buffer springs (71) fixedly installed between the bottom of the protective plate (6) and the top of the second arc plate (4), and a plurality of dampers (72) fixedly installed between the bottom of the protective plate (6) and the top of the second arc plate (4).

6. The fall protection and buffer structure for vertical shaft operations according to claim 1, characterized in that, Each of the second arc-shaped plates (4) has a buffer rubber pad (10) fixedly installed on its top.

7. The vertical shaft operation fall protection and buffer structure according to claim 1, characterized in that, A ventilation hood (11) is detachably installed between multiple second arc-shaped plates (4), and a ventilation fan (12) is fixedly installed inside the ventilation hood (11).

8. The fall-prevention and buffer protection structure for vertical shaft operations according to claim 7, characterized in that, A magnet ring (13) is fixedly installed on the outer periphery of the ventilation hood (11), and the magnet ring (13) is magnetically connected to the second arc plate (4).

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