Liquid oxygen energy blasting safety blocking and protecting device close to existing high-speed slope roadbed

Abstract

The invention provides a liquid oxygen energy blasting safety blocking and protecting device adjacent to an existing high-speed slope roadbed, and belongs to the technical field of slope roadbed blasting. The liquid oxygen energy blasting safety blocking and protecting device comprises a blasting cartridge, and a liquid oxygen chamber used for being filled with liquid oxygen is formed in the blasting cartridge; a filling chamber used for being filled with a liquid oxygen fuel mixture is formed in the filling cylinder, the first flow channel is used for communicating the liquid oxygen chamber with the filling chamber, the closing plate is used for closing or opening the first flow channel, the energy absorption plate is arranged on one side of the blasting cylinder, the extension plate is fixedly arranged at the end, close to the ground, of the energy absorption plate, and the blasting cylinder and the extension plate are located on the same side of the energy absorption plate. The side, close to the blasting cartridge, of the extension plate is in an arc shape, the tearing seam is formed in the inner wall of the liquid oxygen chamber in the length direction of the blasting cartridge and located on the side away from the energy absorption plate, and the ignition assembly is arranged at the axes of the two ends of the blasting cartridge in the axis direction. According to the directional blasting method, the influence on the environment can be reduced through precise directional blasting, and particularly, damage to important facilities such as expressways is avoided, so that the construction safety and the environmental friendliness are improved.

Description

Technical Field

[0001] The invention relates to the technical field of slope roadbed blasting, and in particular to a liquid oxygen energy blasting safety shielding device close to an existing high-speed slope roadbed. Background Art

[0002] Existing slope roadbed blasting usually uses explosive blasting, but this method has obvious environmental pollution and safety hazards. First of all, the impact force of explosive blasting will mostly spread outward, especially when working on the slope, the shock wave and fragments generated by the explosion may have a serious impact on the surrounding environment. Dust pollution after blasting is particularly significant, especially near busy traffic areas such as highways. Dust not only affects the quality of life of surrounding residents, but also may pose a hidden danger to traffic safety on highways. Dust, gravel and solid explosives sometimes drift onto the highway pavement, which may cause damage to the pavement, increase maintenance costs, and even cause vehicle safety accidents.

[0003] In addition, explosive blasting not only releases impact force, but also burns and produces harmful substances, which will be dispersed into the air after the blast, further aggravating environmental pollution. For example, the toxic gas, dust and residue released after the burning of explosives not only affect the air quality, but also may pollute the surrounding soil and water sources, threatening the ecological environment.

[0004] In addition, explosive blasting will generate certain vibrations when releasing energy, which may have potential impacts on nearby buildings, bridges and other infrastructure. In order to better solve this problem, the present application proposes a liquid oxygen energy blasting safety protection device close to the existing highway slope roadbed. Summary of the invention

[0005] The purpose of the present invention is to provide a liquid oxygen energy blasting safety protection device adjacent to an existing highway slope roadbed, aiming to reduce the impact on the environment through precise directional blasting, especially to avoid damage to important facilities such as highways, thereby improving construction safety and environmental friendliness.

[0006] The embodiments of the present invention are implemented by the following technical solutions:

[0007] A liquid oxygen energy blasting safety protection device close to an existing high-speed slope roadbed, comprising:

[0008] A blasting tube, wherein a liquid oxygen chamber for filling liquid oxygen is provided in the blasting tube, and the thickness of the end walls of the blasting tube at both ends along the axial direction gradually becomes thinner toward the axis;

[0009] A packing cylinder, wherein a packing chamber for filling a liquid oxygen-fuel mixture is provided in the packing cylinder;

[0010] a first flow channel, the first flow channel being used to connect the liquid oxygen chamber and the packing chamber;

[0011] A closing plate, the closing plate is used to close or open the first flow channel;

[0012] A driving assembly, the driving assembly is used to drive the closing plate to open the first flow channel and drive the liquid oxygen-fuel mixture in the packing chamber to enter the liquid oxygen chamber;

[0013] An energy absorbing plate, which is arranged on one side of the blasting tube, the area of ​​the energy absorbing plate itself is larger than the projected area of ​​the blasting tube along the energy absorbing plate, and an energy absorbing chamber is provided in the energy absorbing plate;

[0014] An extension plate, wherein the extension plate is fixedly arranged at one end of the energy absorbing plate close to the ground, and the blasting tube and the extension plate are located on the same side of the energy absorbing plate, and the side of the extension plate close to the blasting tube is arranged in an arc shape;

[0015] A tearing seam, wherein the tearing seam is opened on the inner wall of the liquid oxygen chamber along the length direction of the blasting tube and is located on a side away from the energy absorbing plate. A plurality of tearing seams are provided and are evenly arranged along the peripheral wall of the liquid oxygen chamber away from the energy absorbing plate. Meanwhile, the depth of the tearing seam gradually deepens from the middle of the blasting tube toward both ends thereof;

[0016] An ignition assembly is arranged at the axis centers of both ends of the blasting tube along the axial direction.

[0017] Furthermore, a guide portion is provided on a side of the inner wall of the liquid oxygen chamber close to the energy absorbing plate, the guide portion is arranged in a V-shape, and the V-shaped tip of the guide portion is arranged away from the energy absorbing plate.

[0018] Furthermore, each tear seam is provided with a plurality of welding points, and the spacing between the plurality of welding points gradually increases from the middle portion of the blasting tube toward the two ends;

[0019] And / or, tear guide slits are provided at both ends of the inner wall of the liquid oxygen chamber along the axial direction, and the tear guide slits are connected to both ends of the plurality of tear slits respectively.

[0020] Furthermore, the energy absorption chamber includes a first chamber and a second chamber, the first chamber and the second chamber are isolated from each other, the first chamber is located on the side facing the blasting tube, the second chamber is located on the side close to the ground, the first chamber is provided with air holes on the side close to the blasting tube, the second chamber is arranged in a grid shape and is used to fill concrete, and a filling groove for filling concrete is provided on the top of the extension plate.

[0021] Furthermore, a deformation plate is fixedly provided in the first chamber, the deformation plate is arranged along the axial direction of the blasting tube, an impact fracturing part is arranged on the deformation plate, and the thickness of the impact fracturing part is smaller than the thickness of the deformation plate.

[0022] Furthermore, a shock absorbing plate is fixedly arranged between the blasting tube and the energy absorbing plate.

[0023] Furthermore, the driving assembly includes a push plate, a push rod and a pushing member. The push plate is slidably arranged in the packing chamber, one end of the push rod is fixedly connected to the push plate, and the other end passes through the packing tube. The pushing member is used to push the push rod to drive the push plate to push the liquid oxygen fuel mixture into the liquid oxygen chamber.

[0024] Furthermore, the driving assembly also includes a connecting rod and a baffle rod. The connecting rod is fixedly connected to one end of the push rod passing through the stuffing tube, and the baffle rod is L-shaped. The closing plate is slidably arranged at the bottom wall position of the stuffing chamber and blocks the first flow channel. One end of the closing plate is slidably passed through the stuffing chamber, and a locking bolt threadedly connected to the outer wall of the stuffing tube is passed through the closing plate. One end of the baffle rod is fixedly connected to the closing plate, and the other end is supported on the connecting rod.

[0025] Further, one end of the first flow channel connected to the liquid oxygen chamber is forked and formed with a pair of inlets, the pair of inlets are arranged in a constricted shape, and the pair of inlets are correspondingly located on the V-shaped wall surfaces on both sides of the guide portion, and the inner wall of the liquid oxygen chamber is fixedly provided with a pair of protrusions, the pair of protrusions are respectively located directly above the pair of inlets, and the cross-section of the protrusions is arranged in a hook shape.

[0026] Furthermore, an insert plate is fixedly provided on the bottom wall of the energy absorbing plate, the bottom wall of the insert plate is arranged in a pointed cone shape, and a plurality of reinforcing ribs are fixedly provided between the energy absorbing plate and the insert plate.

[0027] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0028] 1. The present invention aims to prevent the blasting energy from being released from one side of these components and effectively absorb the impact force by setting an energy absorption plate and an extension plate. The arc surface of the extension plate can guide the release direction of the impact force, making it easier for the blasting energy to impact toward the side away from the energy absorption plate, avoiding the impact force from being released directly from the top position, and preventing dust and splashes from flying to sensitive areas such as highways. In addition, the energy absorption plate needs to be installed facing the side of the highway to minimize the impact on the highway. The tear seam is designed to be opened along the length of the blasting tube, and the depth gradually deepens from the middle of the blasting tube toward the two ends, which allows the impact force to be released more quickly from both sides to control the direction of the lateral blasting impact force and reduce more explosion impact forces from impacting one side of the highway. The thickness of the end walls of the two ends of the blasting tube gradually becomes thinner along the axial center and the ignition assembly is installed on both sides of the blasting tube, which further helps to make the impact force easier to release from both sides, further improving the accuracy of directional blasting. At the same time, the driving assembly drives the closing plate to open the first flow channel, ensuring the smooth flow of the liquid oxygen and fuel mixture under safe conditions, avoiding premature contact between the liquid oxygen and fuel mixture, thereby improving the safety of the entire blasting process. Through these technical optimizations, the present invention not only improves construction safety, but also effectively reduces the pollution to the environment and damage to facilities caused by traditional blasting methods.

[0029] 2. The present invention further optimizes the release of blasting energy by setting multiple welding points. Each tear seam is provided with multiple welding points, and the spacing between these welding points gradually increases from the middle to the two ends of the blasting tube. This design can ensure that the impact force is released quickly and orderly from both sides of the blasting tube, while increasing the strength of the blasting tube and avoiding excessive concentration of impact force, thereby effectively reducing potential damage to the environment and facilities, and improving the controllability and safety of blasting.

[0030] In addition, tear guide seams are provided at both ends of the inner wall of the liquid oxygen chamber in the axial direction, and these guide seams are connected to the two ends of the multiple tear seams respectively. The setting of the tear guide seams further optimizes the release path of the blasting energy, so that the energy in the liquid oxygen chamber can be released in an orderly manner along a predetermined direction, and the blasting impact force can be quickly released from both sides of the blasting tube, thereby ensuring the directional release of the blasting energy, improving the efficiency and accuracy of the blasting process, and reducing unnecessary vibration and dust pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 The overall structural diagram of the liquid oxygen energy blasting safety shielding device provided by the present invention close to the existing high-speed slope roadbed;

[0033] Figure 2 A cross-sectional view of a liquid oxygen energy blasting safety shielding device provided by the present invention adjacent to an existing high-speed slope roadbed;

[0034] Figure 3 The present invention is intended to show the internal structure of the driving assembly and the blasting tube;

[0035] Figure 4 The present invention is intended to show the internal structure of the blasting tube and the filling tube;

[0036] Figure 5 The present invention is intended to show the structural schematic diagram of the tearing seam and the tearing guide seam of the blasting tube;

[0037] Figure 6 For the present invention Figure 5 A magnified view of part A;

[0038] Icons: 1-blasting tube, 11-liquid oxygen chamber, 111-tear seam, 1111-tear guide seam, 1112-weld point, 112-guide part, 113-protrusion, 12-first flow channel, 121-inlet, 2-filling tube, 21-filling chamber, 22-air nozzle, 3-closing plate, 30-handle, 31-locking bolt, 4-driving assembly, 41-push plate, 42-push rod, 43-pushing member, 431-tension spring, 44-connecting rod, 45-blocking rod, 5-energy absorbing plate, 50-energy absorbing chamber, 51-first chamber, 511-air hole, 512-deformation plate, 5121-impact fracturing part, 52-second chamber, 6-extension plate, 61-filling groove, 62-side plate, 7-ignition assembly, 71-spark plug, 8-shock absorbing plate, 9-insertion plate, 91-strengthening rib plate. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0041] Example

[0042] The following is further described in conjunction with specific embodiments. Figure 1-Figure 6 As shown, the present invention is a liquid oxygen energy blasting safety shielding device adjacent to an existing highway slope roadbed. It should be noted that before installing the blasting tube 1 and the energy absorbing plate 5 as a whole, it is first necessary to use mechanical equipment to dig a blasting hole with a depth of about 2 meters to 5 meters at the construction location. The size of this blasting hole must be large enough to accommodate the overall structure of the blasting tube 1 and the energy absorbing plate 5 to ensure the subsequent stable installation. The energy absorbing plate 5 must be installed facing the side of the highway. After the blasting tube 1 and the energy absorbing plate 5 are placed in the blasting hole, the detonating line must be brought out to a safe detonation area, and fine sand must be filled in to compact the blasting tube 1 and the energy absorbing plate 5 to ensure their stability during the blasting process.

[0043] In the design of the blasting tube 1, the blasting tube 1 is usually made of high-strength alloy steel or stainless steel. A liquid oxygen chamber 11 for filling liquid oxygen is provided in the blasting tube 1. The cross section of one side of the blasting tube 1 is semicircular, and the cross section of the other side is square. Most of the square part is solid as a whole, which increases the structural strength of the blasting tube 1 and enables it to effectively resist unnecessary deformation when subjected to external pressure. The thickness of the end walls of the blasting tube 1 at both ends along the axial direction gradually becomes thinner toward the axis; the filling tube 2 is fixedly installed above the blasting tube 1, and a filling chamber 21 for filling the liquid oxygen-fuel mixture is provided in the filling tube 2; both the blasting tube 1 and the filling tube 2 are equipped with a gas nozzle 22, and the gas nozzle 22 adopts a unidirectional flow structure to ensure that the liquid oxygen and the liquid oxygen-fuel mixture will not leak out, thereby avoiding potential harm to the surrounding environment or construction personnel.

[0044] The first flow channel 12 is used to connect the liquid oxygen chamber 11 and the packing chamber 21 and is opened on the liquid oxygen chamber 11 and the packing chamber 21 to ensure that the liquid oxygen and the liquid oxygen fuel mixture can flow smoothly to the liquid oxygen chamber 11 when needed. The design of the first flow channel 12 not only ensures the effective transfer of the fluid, but also avoids unnecessary leakage. The closing plate 3 is a key component for closing or opening the first flow channel 12. The closing plate 3 adopts a reliable sealing structure to ensure that the liquid oxygen fuel mixture enters the liquid oxygen chamber 11 through the first flow channel 12 only when needed.

[0045] The driving assembly 4 is used to drive the closing plate 3 to open or close. The driving mode can be electric drive, pneumatic drive or hydraulic drive, etc. The most suitable driving mode is selected according to actual needs. Through the action of the driving assembly 4, the closing plate 3 can accurately open the first flow channel 12, allowing the liquid oxygen-fuel mixture to enter the liquid oxygen chamber 11 from the packing chamber 21. The role of the driving assembly 4 is not limited to opening the closing plate 3, but also uses its mechanical force to push the liquid oxygen-fuel mixture in the packing chamber 21 into the liquid oxygen chamber 11, thereby completing the mixing process;

[0046] The energy absorbing plate 5 is arranged on one side of the square part of the blasting tube 1, and the blasting tube 1 is located at a position close to the side wall of the energy absorbing plate 5. The height of the energy absorbing plate 5 needs to be selected according to the specific blasting hole, at least the difference between the two is not large, and both sides of the width direction need to extend the length of the blasting tube 1 by at least 20-50mm. In terms of design, the area of ​​the energy absorbing plate 5 itself is larger than the projected area of ​​the blasting tube 1 along the energy absorbing plate 5. Such a design can effectively expand the contact area of ​​the energy absorbing plate 5, thereby improving the ability to absorb the impact of the blasting. Energy absorbing chambers 50 are provided in the energy absorbing plate 5, which help to absorb and disperse the shock waves during the explosion and reduce the impact on the surrounding environment during the blasting process.

[0047] The extension plate 6 is fixedly welded to the end of the energy absorbing plate 5 close to the ground. The main function of the extension plate 6 is to guide the release direction of the impact force and enhance the stability of the energy absorbing plate 5. The side of the extension plate 6 close to the blasting tube 1 is set in an arc shape. This design has important functions: first, the arc surface can effectively guide the impact force and ensure that the blasting energy is mainly released from the back side of the energy absorbing plate 5, rather than from the top or other undesirable directions. Secondly, the arc surface can reasonably distribute the stress generated during the blasting process, avoiding the shock wave from directly spreading to the highway or surrounding sensitive areas, thereby reducing the potential threat to the environment.

[0048] The tear seam 111 is opened on the inner wall of the liquid oxygen chamber 11 along the length direction of the blasting tube 1 and is located on the side away from the energy absorbing plate 5. A plurality of tear seams 111 are provided and are evenly arranged along the peripheral wall of the liquid oxygen chamber 11 away from the energy absorbing plate 5. Such an arrangement can ensure that the liquid oxygen chamber 11 releases energy evenly during the explosion, thereby effectively guiding the distribution of the explosion energy and reducing the concentrated release of energy. At the same time, the depth of the tear seam 111 gradually deepens from the middle of the blasting tube 1 toward its two ends, which helps to ensure that the distribution of the impact force during the explosion is more even.

[0049] The ignition assembly 7 adopts an electric ignition method, and specifically, a spark plug 71 can be selected for ignition. As an ignition device, the spark plug 71 has the advantages of simple structure, fast response speed, high stability, etc., and can effectively start the reaction of the liquid oxygen fuel mixture in the blasting tube 1. In this embodiment, the ignition assembly 7 is arranged at the axis of both ends of the blasting tube 1 along the axial direction. This position selection is intended to control the precise position of ignition, so as to better control the starting point of the explosion and ensure that the release of the explosion energy is carried out in the designed direction and manner. The selection of the spark plug 71 ignition device makes the ignition process more controllable, and can realize remote control and precise triggering, thereby enhancing safety.

[0050] Reference Figure 3 and Figure 4A guide portion 112 is integrally formed on one side of the inner wall of the liquid oxygen chamber 11 near the energy absorbing plate 5. The guide portion 112 is arranged in a V shape, and the V-shaped tip of the guide portion 112 is arranged away from the energy absorbing plate 5. The function of the guide portion 112 is to guide the energy and shock wave released during the explosion, so that it diffuses in a predetermined direction and minimizes the impact on one side of the energy absorbing plate 5. Since the guide portion 112 is in a V shape and its tip is away from the energy absorbing plate 5, the design can effectively guide the impact force of the explosion to both sides, thereby avoiding the impact force from being concentrated on one side of the energy absorbing plate 5, ensuring uniform distribution of the explosion energy, and reducing unnecessary damage to the surrounding structure or environment.

[0051] Furthermore, each tear seam 111 is provided with a plurality of welding points 1112, and the spacing between the plurality of welding points 1112 gradually increases from the middle portion to the two ends of the blasting tube 1. The purpose of setting the welding points 1112 is to control the opening process of the tear seam 111 to ensure that the tear seam 111 can be cracked according to a predetermined pattern during blasting. Specifically, the spacing between the welding points 1112 gradually increases from the middle portion to the two ends, which helps to achieve more accurate and controllable crack expansion during the blasting process.

[0052] As an optional embodiment, tear guide seams 1111 are provided at both ends of the inner wall of the liquid oxygen chamber 11 in the axial direction, and the tear guide seams 1111 are connected to both ends of the plurality of tear seams 111 respectively.

[0053] Reference Figure 2 The energy absorption chamber 50 includes a first chamber 51 and a second chamber 52. The first chamber 51 and the second chamber 52 are isolated from each other. The first chamber 51 is located on the side facing the blasting tube 1, and the second chamber 52 is located on the side close to the ground. The first chamber 51 is provided with an air hole 511 on the side close to the blasting tube 1 to adjust the airflow inside the chamber and help balance the pressure wave generated during the blasting process. The second chamber 52 is arranged in a grid shape, mainly used to fill concrete to enhance its impact resistance and energy absorption performance. A filling groove 61 for filling concrete is provided on the top of the extension plate 6. This design can ensure the uniform filling of concrete and the integrity of the structure, thereby improving the overall impact resistance of the energy absorption plate 5.

[0054] Reference Figure 2A deformable plate 512 is fixedly welded in the first chamber 51, and the deformable plate 512 is arranged along the axial direction of the blasting tube 1. An impact fracturing part 5121 is arranged on the deformable plate 512, and the impact fracturing part 5121 is located in the middle of the deformable plate 512. The thickness of the impact fracturing part 5121 is less than the thickness of the deformable plate 512, thereby ensuring that the shock wave can first act on the impact fracturing part 5121 during the blasting process, forming local fracturing and further consuming energy. This structural design can effectively absorb and evenly disperse the shock wave energy generated by the blasting, reduce the propagation of vibration, and ensure the directional release of the blasting energy, thereby improving the accuracy and safety of the blasting.

[0055] As an optional embodiment, a shock-absorbing plate 8 is fixedly installed between the blasting tube 1 and the energy-absorbing plate 5. The material of the shock-absorbing plate 8 can be selected from high-performance energy-absorbing materials such as rubber, polyurethane, silicone or composite materials to effectively attenuate the vibration and impact force generated during the blasting process. These materials have excellent elasticity, impact resistance and fatigue resistance, and can reduce the propagation of vibration to the surrounding environment, thereby reducing the impact on facilities such as highways and slope roadbeds. Through the provision of the shock-absorbing plate 8, the vibration energy generated by the blasting can be effectively absorbed and dispersed, reducing the potential damage to the external environment of the construction area, improving construction safety, and ensuring the smooth progress and environmental friendliness of the construction process.

[0056] Reference Figure 1 and Figure 4 The driving assembly 4 includes a push plate 41, a push rod 42 and a push member 43. The push plate 41 is slidably arranged in the packing chamber 21. One end of the push rod 42 is fixedly connected to the push plate 41, and the other end is arranged to pass through the top position of the packing tube 2. In this embodiment, a plurality of push rods 42 are installed in parallel. The push member 43 is used to push the push rod 42 to drive the push plate 41 to push the liquid oxygen fuel mixture into the liquid oxygen chamber 11. In this embodiment, the push member 43 uses a tension spring 431. The tension spring 431 corresponds to the push rod 42 one by one and is sleeved on the push rod 42. When the tension of the tension spring 431 is selected, the tension should be sufficient to drive the push plate 41 to push the liquid oxygen fuel mixture into the liquid oxygen chamber 11. Of course, in other embodiments, the push member 43 can use an electric push rod 42.

[0057] Further, the driving assembly 4 also includes a connecting rod 44 and a blocking rod 45. The connecting rod 44 is fixedly connected to one end of the plurality of push rods 42 passing through the packing tube 2 and connects all the push rods 42 together. The blocking rod 45 is L-shaped. The closing plate 3 is slidably arranged at the bottom wall position of the packing chamber 21 and blocks the first flow channel 12. One end of the closing plate 3 is slidably arranged to pass through the packing chamber 21 and is welded with a handle 30. The closing plate 3 is provided with a locking bolt 31 threadedly connected to the outer wall of the packing tube 2. One end of the blocking rod 45 is fixedly connected to the closing plate 3 and the other end is supported on the connecting rod 44. In this way, only after the locking bolt 31 is unscrewed, a part of the closing plate 3 can be pulled out, and the blocking rod 45 will be separated from the support of the connecting rod 44. In this state, the push plate 41 starts to push the liquid oxygen fuel mixture into the liquid oxygen chamber 11 under the action of the tension spring 431, thereby realizing the safe separation of the liquid oxygen and liquid oxygen fuel mixture. This design effectively avoids the premature mixing of the liquid oxygen and liquid oxygen fuel mixture without proper operation, and prevents possible dangers.

[0058] By ensuring that the movement of the closing plate 3 occurs only after the locking bolt 31 is loosened, the safety of the entire system is enhanced. In this way, only after the locking bolt 31 is unscrewed, a part of the closing plate 3 can be pulled out, and the blocking rod 45 will be separated from the support of the connecting rod 44. In this state, the push plate 41 begins to push the liquid oxygen-fuel mixture into the liquid oxygen chamber 11 under the action of the tension spring 431, thereby achieving a safe separation of the liquid oxygen and liquid oxygen-fuel mixture. This design effectively avoids the premature mixing of the liquid oxygen and liquid oxygen-fuel mixture without correct operation, preventing possible dangers. By ensuring that the movement of the closing plate 3 occurs only after the locking bolt 31 is loosened, the safety of the entire system is enhanced.

[0059] Reference Figure 3 and Figure 4 The end of the first flow channel 12 connected to the liquid oxygen chamber 11 is forked and formed with a pair of inlets 121. The forked part of the first flow channel 12 is Y-shaped, and the pair of inlets 121 are arranged in a constricted shape. At the same time, the pair of inlets 121 are correspondingly located on the V-shaped wall surfaces on both sides of the guide portion 112. The inner wall of the liquid oxygen chamber 11 is integrally formed with a pair of protrusions 113. These protrusions 113 are respectively spaced above the pair of inlets 121. The design purpose is to guide the flow of liquid oxygen and liquid oxygen fuel mixture and promote the uniform mixing of the two. The shape of the protrusion 113 is hook-shaped, and its cross-sectional shape is similar to the curved part of the eagle's beak. This design can not only effectively guide the flow direction of liquid oxygen, but also enhance the contact between liquid oxygen and liquid oxygen fuel mixture, thereby improving the mixing efficiency. The hook-shaped design enables liquid oxygen to produce a certain turbulent effect when it flows through the protrusion 113, further accelerating the fusion of liquid oxygen and fuel mixture, and ensuring the stability and safety of the mixture.

[0060] The design of this structure has important functionality. The eagle-beak curved shape of the protrusion 113 can effectively control the flow direction of the liquid oxygen and avoid uneven distribution of the liquid oxygen in the chamber, thereby ensuring the uniformity of mixing and reaction efficiency. Since the shape of the protrusion 113 is combined with the principles of fluid mechanics, the flow of liquid oxygen will be properly guided when passing through this structure, reducing the potential danger caused by insufficient mixing of liquid oxygen and fuel.

[0061] Reference Figure 1 and Figure 3 The bottom wall of the energy absorbing plate 5 is connected to the insert plate 9 by fixed welding. The design of the insert plate 9 enables it to be easily inserted into the slope roadbed, thereby providing better stability during the blasting impact process and preventing the energy absorbing plate 5 from being displaced or deformed under the action of the blasting force. At the same time, the structure of the insert plate 9 facilitates the fixing of the energy absorbing plate 5 in the slope roadbed, ensuring that it can always maintain a stable working state during the blasting process. Side plates 62 are also fixedly welded on both sides of the energy absorbing plate 5. The side plates 62 are designed in a V shape as a whole. This shape not only facilitates the insertion of the energy absorbing plate 5, but also ensures that the overall positioning of the energy absorbing plate 5 during the installation process is more accurate, thereby improving the installation efficiency and stability.

[0062] The bottom wall of the insert plate 9 is set in a pointed cone shape, which further improves the contact stability between the insert plate 9 and the slope roadbed, ensuring that the energy absorbing plate 5 can be firmly embedded in the slope roadbed to avoid loosening or displacement during the blasting process. In order to enhance the strength of the overall structure, a plurality of reinforcing ribs 91 are welded between the energy absorbing plate 5 and the insert plate 9. These reinforcing ribs 91 can effectively improve the overall impact resistance and durability of the energy absorbing plate 5, ensuring that the energy absorbing plate 5 can work stably for a long time in a complex blasting environment.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A liquid oxygen energy blasting safety protection device close to an existing high-speed slope roadbed, characterized in that: include: A blasting tube (1), wherein a liquid oxygen chamber (11) for filling liquid oxygen is provided in the blasting tube (1), and the thickness of the end walls of the blasting tube (1) at both ends along the axial direction gradually becomes thinner toward the axis; A filling cylinder (2), wherein a filling chamber (21) for filling a liquid oxygen-fuel mixture is provided in the filling cylinder (2); A first flow channel (12), wherein the first flow channel (12) is used to connect the liquid oxygen chamber (11) and the packing chamber (21); A closing plate (3), the closing plate (3) being used to close or open the first flow channel (12); A driving assembly (4), the driving assembly (4) being used to drive the closing plate (3) to open the first flow channel (12), and at the same time drive the liquid oxygen-fuel mixture in the packing chamber (21) to enter the liquid oxygen chamber (11); An energy absorbing plate (5), the energy absorbing plate (5) being arranged on one side of the blasting tube (1), the area of ​​the energy absorbing plate (5) being larger than the projected area of ​​the blasting tube (1) along the energy absorbing plate (5), and an energy absorbing chamber (50) being provided in the energy absorbing plate (5); An extension plate (6), the extension plate (6) being fixedly arranged at one end of the energy absorbing plate (5) close to the ground, and the blasting tube (1) and the extension plate (6) being located on the same side of the energy absorbing plate (5), and a side of the extension plate (6) close to the blasting tube (1) being arranged in an arc shape; a tearing seam (111), the tearing seam (111) being opened on the inner wall of the liquid oxygen chamber (11) along the length direction of the blasting tube (1) and being located on a side away from the energy absorbing plate (5), a plurality of tearing seams (111) being provided and being evenly arranged along the peripheral wall of the liquid oxygen chamber (11) away from the energy absorbing plate (5), and the depth of the tearing seam (111) gradually increasing from the middle of the blasting tube (1) toward both ends thereof; An ignition assembly (7), wherein the ignition assembly (7) is arranged at the axis centers of both ends of the blasting tube (1) along the axial direction.

2. The liquid oxygen energy blasting safety shielding device close to the existing high-speed slope roadbed according to claim 1 is characterized by: A guide portion (112) is provided on a side of the inner wall of the liquid oxygen chamber (11) close to the energy absorbing plate (5); the guide portion (112) is arranged in a V-shape, and the V-shaped tip of the guide portion (112) is arranged away from the energy absorbing plate (5).

3. The liquid oxygen energy blasting safety shielding device close to the existing high-speed slope roadbed according to claim 2 is characterized by: A plurality of welding points (1112) are arranged on each tear seam (111), and the spacing between the plurality of welding points (1112) gradually increases from the middle portion toward the two ends of the blasting tube (1); And / or, tear guide slits (1111) are provided at both ends of the inner wall of the liquid oxygen chamber (11) in the axial direction, and the tear guide slits (1111) are respectively connected to both ends of the plurality of tear slits (111).

4. The liquid oxygen energy blasting safety shielding device close to the existing high-speed slope roadbed according to claim 3 is characterized by: The energy absorption chamber (50) comprises a first chamber (51) and a second chamber (52), the first chamber (51) and the second chamber (52) being isolated from each other, the first chamber (51) being arranged on a side directly facing the blasting tube (1), the second chamber (52) being arranged on a side close to the ground, the first chamber (51) being provided with air holes (511) on a side close to the blasting tube (1), the second chamber (52) being arranged in a grid shape and being used for filling concrete, and a filling groove (61) for filling concrete is provided on the top of the extension plate (6).

5. The liquid oxygen energy blasting safety shielding device close to the existing high-speed slope roadbed according to claim 4 is characterized by: A deformation plate (512) is fixedly arranged in the first chamber (51), and the deformation plate (512) is arranged along the axial direction of the blasting tube (1). An impact fracturing portion (5121) is arranged on the deformation plate (512), and the thickness of the impact fracturing portion (5121) is smaller than the thickness of the deformation plate (512).

6. The liquid oxygen energy blasting safety shielding device close to the existing high-speed slope roadbed according to claim 5 is characterized by: A shock absorbing plate (8) is fixedly arranged between the blasting tube (1) and the energy absorbing plate (5).

7. The liquid oxygen energy blasting safety shielding device close to the existing high-speed slope roadbed according to claim 6 is characterized by: The driving assembly (4) comprises a push plate (41), a push rod (42) and a pushing member (43); the push plate (41) is slidably arranged in the packing chamber (21); one end of the push rod (42) is fixedly connected to the push plate (41), and the other end thereof passes through the packing tube (2); the pushing member (43) is used to push the push rod (42) to drive the push plate (41) to push the liquid oxygen-fuel mixture into the liquid oxygen chamber (11).

8. The liquid oxygen energy blasting safety shielding device close to the existing high-speed slope roadbed according to claim 7 is characterized by: The driving assembly (4) also includes a connecting rod (44) and a blocking rod (45). The connecting rod (44) is fixedly connected to one end of the push rod (42) passing through the stuffing tube (2). The blocking rod (45) is L-shaped. The closing plate (3) is slidably arranged at the bottom wall position of the stuffing chamber (21) and blocks the first flow channel (12). One end of the closing plate (3) is slidably arranged to pass through the stuffing chamber (21). The closing plate (3) is provided with a locking bolt (31) threadedly connected to the outer wall of the stuffing tube (2). One end of the blocking rod (45) is fixedly connected to the closing plate (3), and the other end is supported on the connecting rod (44).

9. The liquid oxygen energy blasting safety shielding device close to the existing high-speed slope roadbed according to claim 8 is characterized by: One end of the first flow channel (12) connected to the liquid oxygen chamber (11) is forked and formed with a pair of inlets (121). The pair of inlets (121) are arranged in a constricted shape. At the same time, the pair of inlets (121) are correspondingly located on the V-shaped wall surfaces on both sides of the guide portion (112). A pair of protrusions (113) are fixedly arranged on the inner wall of the liquid oxygen chamber (11). The pair of protrusions (113) are respectively located directly above the pair of inlets (121). The cross section of the protrusion (113) is arranged in a hook shape.

10. The liquid oxygen energy blasting safety shielding device close to the existing high-speed slope roadbed according to claim 9 is characterized in that: An insert plate (9) is fixedly arranged on the bottom wall of the energy absorbing plate (5), the bottom wall of the insert plate (9) is arranged in a pointed cone shape, and a plurality of reinforcing ribs (91) are fixedly arranged between the energy absorbing plate (5) and the insert plate (9).

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