An openable and closable anti-collision bracket

Abstract

The present invention provides an openable and closable anti-collision support, which relates to the field of mine tunnel support. The anti-collision support comprises a closed-loop support that can be folded and unfolded. The closed-loop support comprises a plurality of anti-collision units, and two adjacent anti-collision units are hinged; the anti-collision unit comprises a flat tubular shell and a capsule filled in the shell, and the capsule is used to fill a non-Newtonian fluid; the anti-collision support also comprises a plurality of pillars. When the closed-loop support is in an unfolded state, the pillars are hinged to the shell to support the closed-loop support. After completing the support task at a certain place, the anti-collision support can be separated from the pillars, and then the closed-loop support can be folded up and stored or moved to the next place to be supported, that is, the anti-collision support can be reused multiple times; in addition, the anti-collision support can form an all-round closed-loop support for the tunnel, and the non-Newtonian fluid filled in the capsule will harden when subjected to an instantaneous impact, so that the local impact force is dispersed, reducing the damage caused by the local impact force and improving the protection effect.

Description

Technical Field

[0001] The present invention relates to the technical field of mine tunnel support, and in particular to an openable and closable anti-collision support. Background Art

[0002] Rock burst, also known as rockburst, is a sudden, explosive failure of rock masses in deep underground mining or areas of high tectonic stress. It occurs when strain energy accumulated in the rock mass is suddenly and violently released, causing a brittle fracture similar to an explosion. Rock bursts cause massive rockfalls, generating loud noises and air waves that can damage mines and threaten surface structures.

[0003] In existing technology, mine tunnels typically use permanent or temporary anti-rock burst supports. Permanent anti-rock burst supports are effective in protecting against rock bursts, but they are not reusable, resulting in high costs. Temporary or temporary anti-rock burst supports are low-cost but offer poor protection against rock bursts. In other words, existing anti-rock burst supports are not reusable or offer poor protection against rock bursts. Summary of the Invention

[0004] The purpose of the present invention is to provide an openable and closable anti-impact support to solve the technical problems in the prior art that the anti-impact support cannot be reused or has poor protection effect against impact ground pressure.

[0005] The anti-collision support provided by the present invention comprises a closed-loop support that can be folded and unfolded, wherein the closed-loop support comprises a plurality of anti-collision units, and two adjacent anti-collision units are hinged;

[0006] The anti-collision unit includes a flat tubular shell and a capsule filled in the shell, wherein the capsule is used to be filled with a non-Newtonian fluid;

[0007] The anti-collision support further comprises a plurality of pillars. When the closed-loop support is in an expanded state, the pillars are hinged to the shell to support the closed-loop support.

[0008] Furthermore, the number of the anti-collision units is two groups, each group of the anti-collision units includes a top plate unit, a side plate unit and a bottom plate unit, and the top plate unit, the side plate unit and the bottom plate unit are connected in sequence from top to bottom; the two top plate units of the two groups of the anti-collision units are hinged, and the two bottom plate units are hinged.

[0009] Furthermore, the top plate unit is arc-shaped and is used to support the top plate of the tunnel; when the closed-loop support is in a folded state, the two top plate units are in an inverted "V" shape, and the two side units and the two bottom plate units are all located in the space enclosed by the two top plate units and are in an "M" shape.

[0010] Furthermore, the two groups of anti-collision units are symmetrically arranged.

[0011] Furthermore, the support is a hydraulic support, and the number of the hydraulic supports is two, and each group of the anti-collision units is equipped with one hydraulic support; the part of the shell facing the outside of the closed-loop bracket is the outer shell part, and the part facing the inside of the closed-loop bracket is the inner shell part, the cylinder body of the hydraulic support is installed on the inner shell part of the bottom plate unit, and the piston rod of the hydraulic support is installed on the inner shell part of the top plate unit.

[0012] Furthermore, the two hydraulic supports are in an inverted "eight" shape.

[0013] Furthermore, the part of the shell facing the outside of the closed-loop bracket is the outer shell part, and the part facing the inside of the closed-loop bracket is the inner shell part. An elastic part is also provided between the outer shell part and the inner shell part. The sac body is provided with a reserved hole. The elastic part is embedded in the reserved hole, and both ends extend out of the reserved hole and abut against the outer shell part and the inner shell part respectively.

[0014] Furthermore, the width of the anti-collision unit is not less than 0.5m.

[0015] Furthermore, the elastic member is a coil spring or a rubber column.

[0016] Furthermore, the sac is provided with a pressure relief flow valve, which is used to maintain the pressure of the fluid in the sac and monitor the flow of the fluid discharged from the sac.

[0017] The retractable anti-collision support provided by the present invention can produce the following beneficial effects:

[0018] The openable and closable anti-collision support provided by the present invention includes a closed-loop support and a support column, wherein adjacent anti-collision units in the closed-loop support are hinged so that the closed-loop support can be folded and unfolded. Therefore, when the anti-collision support completes the support task at a certain place, the closed-loop support can be separated from the support column, and then the closed-loop support can be folded up and stored or moved to the next place to be supported. That is, the anti-collision support can be reused many times, the comprehensive protection cost is low, and the closed-loop support occupies a small space after being folded, which is very convenient for storage and movement.

[0019] In addition, the anti-impact support provided by the present invention can form an all-round closed-loop support for the top plate, side walls and bottom plate of the tunnel, greatly reducing the blind area of impact ground pressure protection; and the non-Newtonian fluid filled in the sac will harden when subjected to instantaneous impact, and can convert the point force received by the outer sac into surface force applied to the inner shell, thereby dispersing the local impact force and achieving pressure relief, reducing the damage caused by the local impact force and improving the protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0021] Figure 1 A schematic structural diagram of an openable and closable anti-collision support provided by an embodiment of the present invention in an expanded state;

[0022] Figure 2 A schematic diagram of the disassembled structure of the retractable anti-collision support provided in an embodiment of the present invention;

[0023] Figure 3 A schematic structural diagram of the closed-loop support of the openable and closable anti-collision support provided in an embodiment of the present invention when in a folded state.

[0024] Description of reference numerals:

[0025] 100 - closed-loop bracket; 110 - anti-collision unit; 111 - outer shell; 112 - inner shell; 113 - capsule; 114 - elastic member; 115 - pressure relief flow valve; 116 - top mounting seat; 117 - bottom mounting seat;

[0026] 101-top plate unit; 102-side plate unit; 103-bottom plate unit;

[0027] 200-Hydraulic support; 210-Cylinder body; 211-Valve; 220-Piston rod. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] This embodiment provides an openable and closable anti-collision bracket, such as Figures 1 to 3 As shown, it includes a closed-loop bracket 100 that can be folded and unfolded. The closed-loop bracket 100 includes multiple anti-collision units 110, and two adjacent anti-collision units 110 are hinged; the anti-collision unit 110 includes a flat tubular shell and a capsule 113 filled in the shell, and the capsule 113 is used to fill non-Newtonian fluid; the anti-collision bracket also includes multiple pillars. When the closed-loop bracket 100 is in the unfolded state, the pillars are hinged to the shell to support the closed-loop bracket 100.

[0030] The openable and closable anti-collision support provided in this embodiment includes a closed-loop support 100 and a pillar, wherein adjacent anti-collision units 110 in the closed-loop support 100 are hinged so that the closed-loop support 100 can be folded and unfolded. Therefore, when the anti-collision support completes the support task at a certain place, the closed-loop support 100 can be separated from the pillar, and then the closed-loop support 100 can be folded up and stored or moved to the next place to be supported. That is, the anti-collision support can be reused many times, and the comprehensive protection cost is low. Moreover, the closed-loop support 100 occupies a small space after being folded, and is very convenient for storage and movement.

[0031] In addition, the anti-impact support provided in this embodiment can form an all-round closed-loop support for the roof, side walls and bottom plate of the tunnel, greatly reducing the blind spot of impact ground pressure protection; and the non-Newtonian fluid filled in the sac 113 will harden when subjected to instantaneous impact, and can convert the point force received by the outer sac 113 into a surface force applied to the inner shell, thereby dispersing the local impact force and achieving pressure relief, reducing the damage caused by the local impact force and improving the protection effect.

[0032] Specifically, in this embodiment, continue as Figures 1 to 3 As shown, there are two groups of anti-collision units 110, each group of anti-collision units 110 includes a top plate unit 101, a side unit 102 and a bottom plate unit 103, and the top plate unit 101, the side unit 102 and the bottom plate unit 103 are connected in sequence from top to bottom; the two top plate units 101 of the two groups of anti-collision units 110 are hinged, and the two bottom plate units 103 are hinged.

[0033] More specifically, in this embodiment, Figure 3 As shown, the top plate unit 101 is arc-shaped and is used to support the top plate of the tunnel; when the closed-loop support 100 is in a folded state, the two top plate units 101 are in an inverted "V" shape, and the two side units 102 and the two bottom plate units 103 are all located in the space surrounded by the two top plate units 101 and are in an "M" shape. Since the top plate is usually arched, under this arrangement, the arc-shaped top plate unit 101 can better fit the top plate, and the arc-shaped anti-impact unit 110 has a high structural strength, thereby being able to better resist the impact ground pressure of the top plate. Furthermore, in this embodiment, the side unit 102 is also arc-shaped, and the bottom plate unit 103 is also slightly curved.

[0034] It should be noted that in other embodiments of the present application, the bottom plate unit 103 and the side panel unit 102 may also be in a straight line shape. As long as they can fit together with the bottom plate or the side panel, the present application does not impose any restrictions on their specific shapes.

[0035] Preferably, in this embodiment, the two groups of anti-impact units 110 are symmetrically arranged. In this way, the overall strength of the closed-loop support 100 is relatively uniform, thereby improving the reliability and protection effect of resisting impact ground pressure.

[0036] Specifically, in this embodiment, the support is a hydraulic support 200, and the number of the hydraulic support 200 is two. Each group of anti-collision units 110 is equipped with a hydraulic support 200, and the cylinder body 210 of the hydraulic support 200 is installed on the inner shell part 112 of the bottom plate unit 103, and the piston rod 220 of the hydraulic support 200 is installed on the inner shell part 112 of the top plate unit 101.

[0037] More specifically, if Figure 1 and Figure 2 As shown, the inner shell portion 112 of the top plate unit 101 can be provided with a top mounting seat 116, and the inner shell portion 112 of the bottom plate unit 103 can be provided with a bottom mounting seat 117, and the cylinder body 210 and the piston rod 220 of the hydraulic strut 200 are respectively installed on the bottom mounting seat 117 and the top mounting seat 116.

[0038] Furthermore, in this embodiment, if Figure 1 As shown, the top mounting seat 116 is fixedly disposed on the top plate unit 101 , the bottom mounting seat 117 is fixedly disposed on the bottom plate unit 103 , the top end of the piston rod 220 is hinged to the top mounting seat 116 , and the bottom end of the cylinder body 210 is hinged to the bottom mounting seat 117 .

[0039] It should be noted that in other embodiments of the present application, the pillar is not limited to the hydraulic pillar 200, but can also be a pneumatic pillar, etc., that is, as long as it can be extended to open the closed-loop bracket 100 and make the closed-loop bracket 100 in an expanded state and support the closed-loop bracket 100, and can be shortened so that the closed-loop bracket 100 can be folded, the present application does not impose any restrictions on the specific structural form of the pillar.

[0040] Specifically, in this embodiment, the two hydraulic props 200 are arranged in an inverted "eight" shape. This arrangement allows the hydraulic props 200 to provide both upward and outward support components for the closed-loop support 100, resulting in a better support effect and a better ability for the entire anti-impact support to resist impact ground pressure.

[0041] It should be noted that, in this embodiment, Figure 1 As shown, in the expanded state, the two hydraulic pillars 200 are located in the space enclosed by the closed-loop support 100. However, in other embodiments of the present application, the number of pillars is not limited to two, and the pillars are not limited to being located in the space enclosed by the closed-loop support 100. For example, the number of pillars can also be four, and each group of anti-collision units 110 is configured with two pillars. Along the extension direction of the tunnel, the two pillars can be in an "eight" shape and are respectively obliquely supported in front and behind each group of anti-collision units 110.

[0042] Specifically, in this embodiment, Figures 1 to 3As shown, an elastic member 114 is disposed between the outer shell 111 and the inner shell 112. A reserved hole is provided in the bladder 113. The elastic member 114 is embedded in the reserved hole, with both ends extending out of the reserved hole and abutting against the outer shell 111 and the inner shell 112, respectively. The reserved hole in the bladder 113 is similar in structure to the central hole of a "swimming ring," except that the diameter of the reserved hole in the bladder 113 matches the diameter of the elastic member 114, and there can be multiple holes, while the hole in the swimming ring is larger and only one hole is provided. Under this setting, the elastic member 114 is in a compressed state, exerting an outward thrust on the outer shell part 111, thereby increasing the resistance of the anti-impact bracket to impact ground pressure, etc., and also plays a buffering role, allowing the sac 113 to gradually release pressure; the elastic member 114 also exerts a thrust on the inner shell part 112, that is, both ends of the elastic member 114 are in contact with the shell, so the friction between the two ends of the elastic member 114 and the shell is relatively large, so that the position stability of the elastic member 114 itself, as well as the connection stability between the outer shell part 111, the elastic member 114 and the inner shell part 112, and the stability of the overall structure of the anti-impact bracket are relatively good; in addition, the elastic member 114 is embedded in the reserved hole of the sac 113, and the hole wall of the reserved hole, that is, the sac 113 located at the reserved hole, plays a limiting role on the elastic member 114, which greatly improves the position stability of the elastic member 114 between the inner shell part 112 and the outer shell part 111.

[0043] Specifically, in this embodiment, a plurality of first mounting portions are provided on the side of the outer shell portion 111 facing the inner shell portion 112, and a plurality of second mounting portions are provided on the side of the inner shell portion 112 facing the outer shell portion 111. The plurality of second mounting portions correspond one-to-one with the plurality of first mounting portions, and the first mounting portions and the second mounting portions are respectively used to mount the ends of the elastic member 114. The first mounting portions and the second mounting portions respectively secure and limit the ends of the elastic member 114.

[0044] Specifically, in this embodiment, Figures 1 to 3 As shown, the elastic member 114 is a coil spring. In this case, the first mounting portion and the second mounting portion can both be mounting slots, with the ends of the coil spring respectively placed within the two mounting slots. The sidewalls of the mounting slots serve to limit the coil spring. Alternatively, the first mounting portion and the second mounting portion can both be mounting posts, with the ends of the coil spring respectively fitted onto the outside of the two mounting posts. The mounting posts serve to limit the coil spring. When the outer diameter of the mounting posts matches the inner diameter of the coil spring, the mounting posts also secure the coil spring.

[0045] It should be noted that, in other embodiments of the present application, the elastic member 114 is not limited to being a coil spring. For example, the elastic member 114 may also be a rubber column, which can also play a role in resisting damage such as impact ground pressure.

[0046] Specifically, in this embodiment, the width of the anti-collision unit 110 is not less than 0.5 m. Furthermore, the widths of the inner shell 112, outer shell 111, and capsule 113 of the anti-collision unit 110 are not less than 0.5 m, ensuring the structural stability and strength of the entire anti-collision support, thereby achieving a good protective effect.

[0047] It should be noted here that the “widths” of the anti-collision unit 110 , the inner shell portion 112 , the outer shell portion 111 and the capsule 113 all refer to their respective dimensions along the extension direction of the tunnel.

[0048] Specifically, in this embodiment, the outer shell 111 and the inner shell 112 can both be made of steel plates. Of course, in other embodiments of the present application, the outer shell 111 and the inner shell 112 can also be made of other materials as long as they can achieve the required protective strength.

[0049] Specifically, in this embodiment, the bladder 113 is provided with a pressure relief valve 115, which is used to maintain the pressure of the fluid within the bladder 113 and monitor the flow rate of the fluid discharged from the bladder 113. When the pressure of the non-Newtonian fluid within the bladder 113 increases due to compression by the tunnel wall, the pressure relief valve 115 can promptly discharge a certain amount of non-Newtonian fluid to maintain the non-Newtonian fluid within the bladder 113 at a set pressure, thereby preventing the bladder 113 from rupturing due to excessive fluid pressure within the bladder 113 and ensuring that the anti-collision support maintains a stable support force. At the same time, the pressure relief valve 115 can determine the amount of non-Newtonian fluid remaining within the bladder 113 based on the amount of non-Newtonian fluid discharged, thereby facilitating an overall assessment of the deformation of the tunnel surrounding rock abutting the outer shell 111. Based on this information, disaster prevention measures such as tunnel reinforcement can be implemented to avoid more serious impacts. That is, the anti-impact support provided in this embodiment can not only maintain the pressure of the non-Newtonian fluid in the bag 113 at the set pressure to continuously and stably resist the impact ground pressure, but also monitor the deformation of the tunnel in real time and over a long period of time, providing an effective basis for local disaster prediction and strengthening support in the tunnel.

[0050] More specifically, in this embodiment, the sac body 113 can be provided with a pipe joint, the inner shell part 112 is provided with a mounting hole, the pipe joint passes through the mounting hole, and the pressure relief flow valve 115 is installed on the exposed part of the pipe joint. This arrangement facilitates pressure relief and observation of flow conditions.

[0051] In summary, the use process of the anti-collision bracket provided in this embodiment can be summarized as follows:

[0052] (1) Place the folded anti-collision support in the tunnel to be supported, unfold the anti-collision support, connect the cylinder 210 of the hydraulic support 200 to the bottom mounting seat 117 on the bottom plate unit 103, connect the piston rod 220 of the hydraulic support 200 to the top mounting seat 116 on the top plate unit 101, inject hydraulic oil into the cylinder 210 through the valve 211 on the cylinder 210 of the hydraulic support 200, and slowly raise the piston rod 220 until the entire anti-collision support is unfolded in line with the tunnel.

[0053] (2) After the elastic member 114 is embedded in the reserved hole of the anti-impact unit 110 and the anti-impact unit 110 is placed in the shell, the non-Newtonian fluid is filled into the capsule 113 through the pressure relief flow valve 115 on each anti-impact unit 110. When the tunnel is affected by a rock burst disaster, the non-Newtonian fluid is hardened by the impact force and the point force it bears is converted into a surface force applied to the inner shell part 112, thereby effectively preventing and controlling the rock burst disaster.

[0054] (3) When the tunnel surrounding rock undergoes slow deformation, the non-Newtonian fluid in the capsule 113 exhibits liquid properties and will release pressure through the pressure relief flow valve 115, and monitor the flow rate of the fluid discharged from the anti-collision unit 110, thereby realizing the monitoring of the deformation of the tunnel surrounding rock corresponding to the anti-collision unit 110.

[0055] (4) When the tunnel support is completed and the anti-collision support needs to be withdrawn, the piston rod 220 is retracted to separate the closed-loop support 100 from the tunnel surrounding rock, the non-Newtonian fluid in the bladder 113 is discharged, and the hydraulic support 200 is removed from the anti-collision unit 110. The anti-collision support can then be folded to its minimum volume and stowed.

[0056] Finally, it should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0057] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to the embodiments will be readily apparent to one 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 limited to the embodiments shown herein but is to be construed in the widest manner consistent with the principles and novel features disclosed herein.

Claims

1. A retractable anti-collision support, characterized in that: The invention comprises a closed-loop support (100) capable of being folded and unfolded, wherein the closed-loop support (100) comprises a plurality of anti-collision units (110), and two adjacent anti-collision units (110) are hinged; The anti-collision unit (110) comprises a flat tubular shell and a capsule (113) filled in the shell, wherein the capsule (113) is used to be filled with a non-Newtonian fluid; The anti-collision support further comprises a plurality of pillars, and when the closed-loop support (100) is in an expanded state, the pillars are hinged to the shell and are used to support the closed-loop support (100); The number of the anti-collision units (110) is two groups, and each group of the anti-collision units (110) includes a top plate unit (101), a side plate unit (102), and a bottom plate unit (103), and the top plate unit (101), the side plate unit (102), and the bottom plate unit (103) are connected in sequence from top to bottom; the two top plate units (101) and the two bottom plate units (103) of the two groups of the anti-collision units (110) are hinged; The top plate unit (101) is arc-shaped and is used to support the top plate of the tunnel; when the closed-loop support (100) is in a folded state, the two top plate units (101) are in an inverted "V" shape, and the two side support units (102) and the two bottom plate units (103) are all located in the space surrounded by the two top plate units (101) and are in an "M" shape; The portion of the shell facing the outside of the closed-loop bracket (100) is the outer shell portion (111), and the portion facing the inside of the closed-loop bracket (100) is the inner shell portion (112). An elastic member (114) is further provided between the outer shell portion (111) and the inner shell portion (112). The capsule (113) is provided with a reserved hole. The elastic member (114) is embedded in the reserved hole, and both ends of the elastic member extend out of the reserved hole and abut against the outer shell portion (111) and the inner shell portion (112) respectively. The sac (113) is provided with a pressure relief flow valve (115), and the pressure relief flow valve (115) is used to maintain the pressure of the fluid in the sac (113) and monitor the flow of the fluid discharged from the sac (113).

2. The retractable anti-collision support according to claim 1, characterized in that: The two groups of anti-collision units (110) are symmetrically arranged.

3. The retractable anti-collision support according to claim 1 or 2, characterized in that: The support is a hydraulic support (200), the number of the hydraulic support (200) is two, and each group of the anti-collision unit (110) is equipped with one hydraulic support (200); the part of the shell facing the outside of the closed-loop support (100) is the outer shell part (111), and the part facing the inside of the closed-loop support (100) is the inner shell part (112); the cylinder body (210) of the hydraulic support (200) is installed on the inner shell part (112) of the bottom plate unit (103), and the piston rod (220) of the hydraulic support (200) is installed on the inner shell part (112) of the top plate unit (101).

4. The retractable anti-collision support according to claim 3, characterized in that: The two hydraulic supports (200) are in an inverted "eight" shape.

5. The retractable anti-collision support according to claim 1, characterized in that: The width of the anti-collision unit (110) is not less than 0.5m.

6. The retractable anti-collision support according to claim 1, characterized in that: The elastic member (114) is a coil spring or a rubber column.

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