Portable personal protection equipment for mining and roadway tunneling

Abstract

The invention discloses portable personal protection equipment for mining and roadway tunneling, and belongs to the technical field of mine safety, the portable personal protection equipment comprises a base, an umbrella rod, a turntable, an umbrella cover and an umbrella top, the base and the turntable are connected through a fixed embracing ring, the turntable restrains relative displacement of the umbrella rod and the base, and the umbrella top and the umbrella rod are fixedly connected through a screw. The six umbrella rib assemblies are hinged to the umbrella top, the umbrella cover and the umbrella cover pressing block are fixedly connected with the umbrella cover cylinder, the umbrella rod moves up and down in the vertical direction by rotating the rotating disc, after the umbrella cover moves to the fixed position, the rotating disc can be rotated to enable the umbrella rod to continue to move upwards, the ends of the umbrella ribs are extruded through the cylindrical face of the umbrella cover, and the umbrella rib assemblies are opened. The rotating disc can be reversely rotated, reverse spring force is provided for the umbrella cover through the flexible spring, closing of the umbrella rib assembly is achieved, the equipment is stable in structure and convenient to carry, rapid opening and closing of the umbrella rib assembly can be achieved, and the safety protection problem caused by falling of vault rocks due to construction vibration is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of mine safety, and in particular to a portable personal protective equipment used for mine exploitation and tunnel excavation. Background Art

[0002] During the construction of metal and non-metal underground mine tunnels, incidents of arch rock falling off caused by construction vibration occur frequently, which not only poses a serious threat to construction safety, but also affects construction efficiency and cost control.

[0003] The cross-section of a mine tunnel is usually a three-center or four-center arch, and the height from the ground to the arch varies from 2.5 meters to 5 meters. This variable geometry places high demands on the design of support equipment. First, the support equipment must be highly adaptable and can be flexibly adjusted to suit different tunnel widths and heights. Second, the support equipment needs to have sufficient strength and stability to cope with the vibration and impact during mine construction.

[0004] In the existing mining construction technology, there are many kinds of support measures, including anchor support, shotcrete support and steel arch support. Anchor support usually requires drilling holes in the rock wall of the tunnel, inserting anchors and grouting to solidify. This process is not only time-consuming, but also affects the stability and support effect of the anchors in a construction environment with large vibrations. Although shotcrete support can cover the tunnel surface quickly, its construction process is complicated and has high requirements for equipment and operators. At the same time, the hardening time of shotcrete is long and it cannot provide effective support immediately. Steel arch support requires a lot of manpower and mechanical equipment to install, and its adaptability is poor when the tunnel cross-section changes greatly.

[0005] These traditional support methods can provide effective support in some cases, but they have certain limitations in flexibility, adaptability and portability. Especially for mining environments with complex and variable tunnel sections, the application of these support methods is greatly restricted. With the increase in mining depth and the complexity of tunnel structures, the requirements for support equipment are also getting higher and higher.

[0006] Therefore, it is urgent to propose a portable personal protective equipment for underground mining and tunnel excavation in metal and non-metal mines to solve the above technical problems. Summary of the invention

[0007] The purpose of developing this invention is to effectively solve the problem of arch stability in underground mine tunnel construction. A portable umbrella-type multi-point support equipment is designed. The equipment drives the expansion and retraction of the umbrella ribs through a turntable, realizes rapid installation and disassembly, and improves construction efficiency and safety.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a portable personal protective equipment for mining and tunnel excavation, comprising a base, an umbrella pole, a turntable, an umbrella cover, an umbrella top and a steel cable, the base and the turntable are connected by a fixed holding ring, the internal thread of the turntable cooperates with the external thread of the lower part of the umbrella pole to constrain the umbrella pole and the base to be relatively displaced, an umbrella retaining spring assembly is fixedly connected to the upper inner part of the umbrella pole, a spring pad is fixedly connected to the bottom of the umbrella retaining spring assembly, a flexible spring is installed above the spring pad, the umbrella top and the umbrella pole are fixedly connected by screws, a plurality of groups of umbrella rib assemblies are respectively hinged to the umbrella top, an umbrella cover cylinder extending into the umbrella pole is installed at the lower end of the umbrella cover, an umbrella cover pressure block is fixedly connected to the bottom of the umbrella cover cylinder, and the two ends of the steel cable are respectively fixedly connected to the umbrella cover pressure block and the lower disk of the base.

[0009] Preferably, the umbrella rib assembly includes an umbrella rib support, an umbrella rib, and an umbrella rib fixing ring. The umbrella rib fixing ring is mounted on the outside of the umbrella pole and can slide up and down along the umbrella pole. One end of the umbrella rib is hinged to the umbrella top, and the other end is a free end. One end of the umbrella rib support is hinged to the umbrella rib fixing ring, and the other end is hinged to the middle position of the lower wall of the umbrella rib.

[0010] Preferably, the umbrella retaining spring assembly includes a retaining spring base plate, a retaining spring block and a small spring, the retaining spring base plate is fixedly mounted on the inner upper wall of the umbrella pole, one end of the retaining spring block is hinged to the retaining spring base plate, one end of the small spring is connected to the retaining spring block, and the other end is connected to the retaining spring base plate, a protruding key is provided on the outer wall of the retaining spring block on the side close to the umbrella pole, and a key slot matching the protruding key is provided on the inner wall of the umbrella pole.

[0011] Preferably, the umbrella pole and the base are coaxially designed, and the umbrella pole can be moved up and down in the vertical direction by rotating the turntable.

[0012] Preferably, the main load-bearing components such as the base, umbrella pole, umbrella ribs, umbrella rib supports, umbrella top, and umbrella cover are all made of high-strength finished profiles, such as high-strength steel or aluminum alloy profiles, which can effectively increase the supporting static load of the protective equipment and make the supporting static load of the umbrella surface not less than 3t; at the same time, the total weight of the protective device is controlled to be no more than 75kg, which is easy to carry and use.

[0013] Preferably, the number of the groups of umbrella rib assemblies is 6 groups.

[0014] Preferably: the highest supporting height of the equipment is 2.5m. When the tunnel height is lower than this height, the upper disc of the umbrella cover contacts and is fixed to the rock wall of the tunnel before the umbrella opening movement is performed; when the tunnel height is higher than this height, after the umbrella cover moves to 2.5m, the equipment steel cable is extended to the maximum length, the height position of the umbrella cover is fixed by the tension of the steel cable, and then the umbrella opening movement is performed.

[0015] Preferably, after the umbrella cover is fixed, the turntable can be adjusted to make the umbrella rod continue to move upward, and the ends of the umbrella ribs are squeezed by the cylindrical surface of the umbrella cover, forcing the umbrella ribs to rotate around the connecting pins with the umbrella top, thereby realizing the opening of the umbrella rib assembly.

[0016] Preferably, the umbrella rod drives the spring pad and the flexible spring to continue to move upwards during the opening process of the umbrella ribs, squeezing the flexible spring to generate a spring compression force, and the compression force helps the umbrella ribs to close quickly.

[0017] Preferably, the umbrella retaining spring assembly cooperates with the umbrella cover pressing block to fix the opening of the umbrella ribs, so that the umbrella ribs have a stable working state.

[0018] Beneficial Effects

[0019] The present invention provides a portable personal protective equipment for mining and tunneling, which has the following beneficial effects:

[0020] 1. A portable personal protective equipment for underground mining and tunneling in metal and non-metal mines of the present invention, which can flexibly adapt to tunnels of different geometric shapes and sizes and provide stable support;

[0021] 2. A portable personal protective equipment for underground mining and tunneling in metal and non-metal mines of the present invention, the equipment is made of high-strength lightweight alloy, and its total weight is controlled within 75 kilograms, which is convenient for workers to carry and use in mine tunnels;

[0022] 3. The method for using the portable personal protective equipment suitable for underground mining and tunnel excavation of metal and non-metal mines of the present invention can greatly improve the safety and efficiency of underground tunnel construction in mines and is suitable for popularization and use.

[0023] 4. The design of the umbrella spring assembly enables the ribs to be automatically locked during the opening process, ensuring the stability of the umbrella cover after it is unfolded. The combination of the flexible spring and the umbrella cover pressure block provides a reaction force when the ribs are closed, achieving rapid closure of the ribs and improving operating efficiency.

[0024] 5. The device uses common mechanical components, has relatively low manufacturing costs, simple maintenance, and high cost performance. At the same time, its versatility and adaptability enable it to play an important role in a variety of mining and tunneling scenarios, and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 is a cross-sectional view of the umbrella top mechanism of the present invention;

[0027] Figure 3It is a cross-sectional view of the umbrella retaining spring assembly of the present invention.

[0028] In the figure: 1. base; 2. fixing ring; 3. turntable; 4. umbrella pole; 5. rib support; 6. rib; 7. umbrella cover; 8. umbrella top; 9. rib fixing ring; 10. pin; 11. pin; 12. pin; 13. umbrella cover fixing screw; 14. umbrella cover cylinder; 15. umbrella cover pressure block fixing screw; 16. umbrella cover pressure block; 17. umbrella retaining spring assembly; 18. flexible spring; 19. spring pad; 20. steel cable; 21. screw; 22. retaining spring bottom plate; 23. retaining spring block; 24. pin; 25. screw; 26. small spring; 27. screw. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-3 The present invention provides a technical solution: a portable personal protective equipment for mining and tunnel excavation, characterized in that it includes a base 1, an umbrella pole 4, a turntable 3, an umbrella cover 7, an umbrella top 8 and a steel cable 20, the base 1 is connected to the turntable 3 through a fixed holding ring 2, the internal thread of the turntable 3 cooperates with the external thread at the lower part of the umbrella pole 4 to constrain the umbrella pole 4 and the base 1 to be relatively displaced, an umbrella clamping spring assembly 17 is fixedly connected to the upper inner part of the umbrella pole 4, a spring pad 19 is fixedly connected to the bottom of the umbrella clamping spring assembly 17, a flexible spring 18 is installed above the spring pad 19, the umbrella top 8 is fixedly connected to the umbrella pole 4 by screws, and a plurality of groups of umbrella rib assemblies are respectively hinged to the umbrella top 8, an umbrella cover cylinder 14 extending into the umbrella pole 4 is installed at the lower end of the umbrella cover 7, an umbrella cover pressing block 16 is fixedly connected to the bottom of the umbrella cover cylinder 14, and the two ends of the steel cable 20 are respectively fixedly connected to the umbrella cover pressing block 16 and the lower disk of the base 1.

[0031] By adopting the above technical solution, the internal thread of the turntable 3 cooperates with the external thread at the bottom of the umbrella pole 4 to constrain the umbrella pole 4 and the base 1 to be relatively displaced. This design allows the umbrella pole 4 to move up and down by rotating the turntable 3, which is convenient for unfolding and folding. An umbrella retaining spring assembly 17 is fixedly connected to the upper inner part of the umbrella pole 4, a spring pad 19 is fixedly connected to the bottom, and a flexible spring 18 is installed on the top. These components are used to provide supporting force and ensure the stability and rapid closure of the umbrella rib 6 assembly.

[0032] This embodiment is further configured as follows: the umbrella rib assembly includes an umbrella rib support 5, an umbrella rib 6, and an umbrella rib fixing ring 9, the umbrella rib fixing ring 9 is sleeved on the outside of the umbrella pole 4, and can slide up and down along the umbrella pole 4, one end of the umbrella rib 6 is hinged to the umbrella top 8, and the other end is a free end, one end of the umbrella rib support 5 is hinged to the umbrella rib fixing ring 9, and the other end is hinged to the middle position of the lower wall of the umbrella rib 6.

[0033] By adopting the above technical solution, this design allows the ribs 6 to automatically unfold when the umbrella pole 4 rises, while maintaining a stable supporting state.

[0034] This embodiment is further configured as follows: the umbrella retaining spring assembly 17 includes a retaining spring base plate 22, a retaining spring block 23 and a small spring 26; the retaining spring base plate 22 is fixedly mounted on the inner upper wall of the umbrella pole 4; one end of the retaining spring block 23 is hinged to the retaining spring base plate 22; one end of the small spring 26 is connected to the retaining spring block 23, and the other end is connected to the retaining spring base plate 22; a protruding key is provided on the outer wall of the retaining spring block 23 on the side close to the umbrella pole 4, and a key groove matching the protruding key is provided on the inner wall of the umbrella pole 4.

[0035] By adopting the above technical solution, when the umbrella rib 6 is opened, the spring block 23 is squeezed and rotated outward, and the raised key cooperates with the key slot to fix the opening of the umbrella rib 6, thereby ensuring its stable working state.

[0036] The present embodiment is further configured such that the umbrella pole 4 and the base 1 are coaxially designed, and the umbrella pole 4 can be moved up and down in a vertical direction by rotating the turntable 3 .

[0037] By adopting the above technical solution, this design allows the umbrella pole 4 to be flexibly adjusted according to the height of the lane, ensuring that the equipment can be used normally in different environments.

[0038] The present embodiment is further configured such that the main load-bearing components such as the base 1, umbrella pole 4, umbrella ribs 6, umbrella rib 6 supports 5, umbrella top 8, umbrella cover 7, etc. are all made of high-strength finished profiles, such as high-strength steel or aluminum alloy profiles, which can effectively increase the supporting static load of the protective equipment and make the supporting static load of the umbrella surface not less than 3t; at the same time, the total weight of the protective device is controlled to be no more than 75kg, which is convenient for carrying and use.

[0039] This embodiment is further configured such that the number of the groups of umbrella rib 6 components is 6 groups.

[0040] This embodiment is further configured as follows: the highest supporting height of the equipment is 2.5m. When the tunnel height is lower than this height, the upper disc of the umbrella cover 7 contacts and is fixed to the rock wall of the tunnel before the umbrella opening movement is performed; when the tunnel height is higher than this height, after the umbrella cover 7 moves to 2.5m, the equipment steel cable 20 is extended to the maximum length, the height position of the umbrella cover 7 is fixed by the tension of the steel cable, and then the umbrella opening movement is performed.

[0041] This embodiment is further configured as follows: after the umbrella cover 7 is fixed, the turntable 3 can be adjusted to make the umbrella rod 4 continue to move upward, and the end of the umbrella rib 6 is squeezed by the cylindrical surface of the umbrella cover 7, forcing the umbrella rib 6 to rotate around the connecting pin 24121110 between it and the umbrella top 8, thereby realizing the opening of the umbrella rib 6 assembly.

[0042] This embodiment is further configured such that the umbrella rod 4 drives the spring pad 19 and the flexible spring 18 to continue to move upwards during the opening process of the umbrella ribs 6, squeezing the flexible spring 18 to generate a spring compression force, which helps the umbrella ribs 6 to close quickly.

[0043] The present embodiment is further configured such that the umbrella retaining spring assembly 17 cooperates with the pressing block of the umbrella cover 7 to fix the opening of the umbrella rib 6 so that the umbrella rib 6 has a stable working state.

[0044] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the field. The following mainly introduces the working principle and process.

[0045] Embodiment: A portable personal protective equipment for mining and tunnel excavation, including a base 1, an umbrella pole 4, a fixed holding ring 2, a turntable 3, an umbrella rib 6, an umbrella rib support 5, an umbrella cover 7, an umbrella top 8, etc. The base 1 and the turntable 3 are connected together through the fixed holding ring 2; the internal thread of the turntable 3 cooperates with the external thread at the lower part of the umbrella pole 4, thereby constraining the relative displacement of the base 1 and the umbrella pole 4; the umbrella top 8 is fixedly connected with the umbrella pole 4 by screws; a total of 6 groups of umbrella rib components are designed in this device, and the umbrella rib components include an umbrella rib support 5, an umbrella rib 6, a pin 10, a pin 11 and a pin 12, the umbrella rib support 5 is hinged with the umbrella rib fixing ring 9 through the pin 10, the umbrella rib support 5 and the umbrella rib 6 are hinged through the pin 11, and the umbrella rib 6 and the umbrella top 8 are hinged through the pin 12; the umbrella rib fixing ring 9 is installed on the umbrella pole 4, and it can slide up and down along the umbrella pole 4 during the opening and closing process of the umbrella rib component. The umbrella cover 7 is fixedly connected to the umbrella cover cylinder 14 by the umbrella cover fixing screws 13; the umbrella cover pressure block 16 is fixedly connected to the umbrella cover cylinder 14 by the umbrella cover pressure block fixing screws 15; the umbrella retaining spring assembly 17 is fixedly connected to the umbrella pole 4 by screws 25 and screws 27; the spring pad 19 is fixedly connected to the bottom of the retaining spring bottom plate 22 by screws 21; the flexible spring 18 is installed on the spring pad 19; the two ends of the steel cable 20 are fixedly connected to the umbrella cover pressure block fixing screws 15 and the lower disk of the base 1 respectively.

[0046] Main load-bearing components such as the base 1, umbrella pole 4, umbrella rib support 5, umbrella rib 6, umbrella cover 7 and umbrella top 8 are all made of high-strength finished profiles, such as high-strength steel or aluminum alloy profiles, which can not only improve the service life of the equipment, but also ensure its load-bearing capacity while reducing the equipment's own weight.

[0047] The total weight of the portable personal protective equipment shall not exceed 75KG. When the ribs 6 are fully opened, the overall coverage area is 3.2m 2 The static load supported by the middle section of any two ribs 6 is not less than 1.5t, and the static load supported by the umbrella surface is not less than 3t.

[0048] The umbrella pole 4 and the base 1 are coaxially designed. When the umbrella ribs are closed, the lower threaded section of the umbrella pole 4 is inserted into the hollow cylindrical tube of the base 1. When the device is in use, the turntable 3 is rotated to allow the umbrella pole 4 to extend and retract in the vertical direction, thereby realizing the up and down movement of the umbrella pole 4.

[0049] At the beginning of the equipment operation, the umbrella cover 7 moves upward with the umbrella pole 4 until the upper end disk of the umbrella cover 7 contacts and is fixed with the rock wall on the tunnel. Then the turntable 3 continues to rotate and the umbrella pole 4 continues to move upward. At this time, the cylindrical surface of the umbrella cover 7 squeezes the end of the umbrella rib 6 to rotate around the pin 12. At the same time, the umbrella rib fixing ring 9 moves upward along the umbrella pole 4 to provide displacement compensation and realize the opening of the umbrella rib assembly.

[0050] The steel cable 20 is a fixed-length steel cable, and its two ends are fixedly connected to the umbrella cover pressure block fixing screws 15 and the lower disc of the base 1 respectively. The maximum supporting height of this equipment is 2.5m. When the tunnel height is higher than 2.5m, after the umbrella cover 7 moves to this height, the steel cable 20 extends to its maximum length, and the height position of the umbrella cover 7 is fixed by the tension of the steel cable 20 itself, so that it no longer moves upward. At this time, the turntable 3 continues to rotate, so that the umbrella rod 4 continues to move upward to realize the umbrella opening function.

[0051] When the ribs 6 are opened, the umbrella pole 4 will drive the spring pad 19 and the flexible spring 18 to continue to move upward until the umbrella cover pressing block 16 contacts the flexible spring 18 and squeezes the flexible spring 18 to generate a spring compression force. The compression force will provide a reaction force to the umbrella cover pressing block 16 during the closing process of the ribs 6, thereby realizing the rapid closing of the ribs 6.

[0052] The umbrella clamp spring assembly 17 is composed of a clamp spring base plate 22, a clamp spring block 23, a pin 24 and a small spring 26. The clamp spring block 23 is hinged to the clamp spring base plate 22 through the pin 24. When the umbrella rib 6 is in a closed state, the clamp spring block 23 is contracted inwardly by the spring force of the small spring 26, and the raised key on it is separated from the keyway on the umbrella rod 4. In the process of opening the umbrella rib 6, the umbrella rod 4 continues to move upward, driving the umbrella clamp spring assembly 17 to move upward, until the umbrella cover pressing block 16 squeezes the clamp spring block 23, causing the clamp spring block 23 to rotate outward around the pin 24, and the raised key cooperates with the keyway on the umbrella rod 4 to fix the opening of the umbrella rib 6, so that it has a stable working state.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. 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".

[0054] 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 portable personal protective equipment for mining and tunneling, characterized in that: The umbrella comprises a base (1), an umbrella pole (4), a rotating disk (3), an umbrella cover (7), an umbrella top (8) and a steel cable (20); the base (1) and the rotating disk (3) are connected via a fixed holding ring (2); the internal thread of the rotating disk (3) cooperates with the external thread of the lower part of the umbrella pole (4) to constrain the umbrella pole (4) and the base (1) to move relative to each other; the upper part of the umbrella pole (4) is fixedly connected to an umbrella retaining spring assembly (17); the bottom of the umbrella retaining spring assembly (17) is fixedly connected to a spring A pad (19), a flexible spring (18) is installed above the spring pad (19), the umbrella top (8) is fixedly connected to the umbrella pole (4) by screws, a plurality of groups of umbrella rib components are respectively hinged to the umbrella top (8), an umbrella cover cylinder (14) extending into the umbrella pole (4) is installed at the lower end of the umbrella cover (7), an umbrella cover pressing block (16) is fixedly connected to the bottom of the umbrella cover cylinder (14), and two ends of the steel cable (20) are respectively fixedly connected to the umbrella cover pressing block (16) and the lower disc of the base (1).

2. A portable personal protective equipment for mining and tunneling according to claim 1, characterized in that: The umbrella rib assembly comprises an umbrella rib support (5), an umbrella rib (6), and an umbrella rib fixing ring (9); the umbrella rib fixing ring (9) is sleeved on the outside of the umbrella pole (4) and can slide up and down along the umbrella pole (4); one end of the umbrella rib (6) is hinged to the umbrella top (8), and the other end is a free end; one end of the umbrella rib support (5) is hinged to the umbrella rib fixing ring (9), and the other end is hinged to the middle position of the lower wall of the umbrella rib (6).

3. A portable personal protective equipment for mining and tunneling according to claim 2, characterized in that: The umbrella retaining spring assembly (17) comprises a retaining spring base plate (22), a retaining spring block (23) and a small spring (26); the retaining spring base plate (22) is fixedly mounted on the inner upper wall of the umbrella pole (4); one end of the retaining spring block (23) is hinged to the retaining spring base plate (22); one end of the small spring (26) is connected to the retaining spring block (23) and the other end is connected to the retaining spring base plate (22); a protruding key is provided on the outer wall of the retaining spring block (23) on the side close to the umbrella pole (4); and a key groove matching the protruding key is provided on the inner wall of the umbrella pole (4).

4. A portable personal protective equipment for mining and tunneling according to claim 3, characterized in that: The umbrella pole (4) and the base (1) are coaxially designed, and the umbrella pole (4) can be moved up and down in a vertical direction by rotating the turntable (3).

5. The portable personal protective equipment for mining and tunneling according to claim 2, characterized in that: The base (1), umbrella pole (4), umbrella ribs (6), umbrella rib supports (5), umbrella top (8), and umbrella cover (7) are made of high-strength profiles.

6. The portable personal protective equipment for mining and tunneling according to claim 1, characterized in that: The number of the groups of umbrella rib assemblies is 6 groups.

7. A portable personal protective equipment for mining and tunneling according to any one of claims 1 to 6, characterized in that: The maximum supporting height of the protective equipment is 2.5m.

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