High-pressure water jet cutting device and method for crane beam of underground cavern factory building rock wall

Abstract

The present invention provides a high-pressure water jet cutting device and method for a rock wall crane beam of an underground cavern factory building, belonging to the technical field of water conservancy and hydropower engineering, comprising: a guide mechanism, a support mechanism and a jet cutting mechanism, wherein the guide mechanism is detachably connected to a steel pipe rack, the steel pipe rack is erected according to a drilling position, the support mechanism is connected to the guide mechanism and can move on the guide mechanism; the support mechanism is connected to the jet cutting mechanism, the support mechanism is used to adjust the angle of a hollow jet pipeline protection pipe of the jet cutting mechanism, a nozzle is connected to the end of the hollow jet pipeline protection pipe, and the steel pipe rack is connected to a positioning steel pipe for the hollow jet pipeline protection pipe to pass through; the present invention utilizes water jet technology to replace blasting construction, reduces the safety problems and construction interference caused by traditional drilling and blasting methods, and improves the construction quality and efficiency of rock wall crane beams.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy and hydropower engineering, in particular to the technical field of high-pressure water jet cutting, and specifically to a high-pressure water jet cutting device for a crane beam on a rock wall of an underground cavern plant and a high-pressure water jet cutting method for a crane beam on a rock wall of an underground cavern plant. Background Art

[0002] The statements in this section merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] In the construction of water conservancy and hydropower projects, underground cavern powerhouses are designed with rock wall crane beams. Rock wall crane beams are a special structural form of underground cavern powerhouses of hydropower stations. Reinforced concrete beams are fixed to the rock wall by grouting anchors, and large bridge cranes are installed on them. Civil construction concrete construction and installation and maintenance of metal structures, electromechanical equipment can be carried out. All loads borne by the beam body are transmitted to the surrounding rock through the contact surface between the anchors and concrete and the rock platform. Rock wall crane beams can make full use of the bearing capacity of the cavern surrounding rock, save crane support columns, and save the amount of steel bars and concrete; since there are no support columns in the powerhouse, the span of the underground cavern powerhouse can be reduced, the amount of excavation engineering can be saved, and it is beneficial to the overall stability of the surrounding rock. Rock wall crane beams are an important part of the underground cavern powerhouse of pumped storage power stations and are the top priority of quality control. Their construction quality directly affects the safe operation of the hydropower station.

[0004] At present, the construction of the crane beam on the rock wall of the underground cavern workshop is mostly carried out by drilling and blasting. In order to control the blasting accuracy, the method of close-range small-dose blasting is mostly adopted, that is, the blasting holes are arranged at an interval of 30 cm, and small doses of explosives are filled and blasted in sequence. Subsequently, manual trimming is performed according to the cross-section after blasting to maintain the overall structure. The conventional blasting method has a low degree of mechanization in construction. It is difficult to control the forming quality due to the influence of geological conditions. The blasting produces a large area of ​​tiny cracks, which reduces the stability of the surrounding rock and causes certain damage to the rock wall, affecting the safety of the project. In addition, there are also problems such as reliance on manpower excavation and blasting, high labor intensity, slow speed, and significant over-excavation and under-excavation. The excavation of rock anchor beams has high requirements for forming quality and rock integrity after blasting, and conventional blasting methods obviously do not meet the requirements. The water jet cutting method has high forming quality control accuracy and good flatness of rock wall cutting, which can reduce secondary operations and improve the construction quality of rock anchor beam excavation; at the same time, it can reduce the disturbance of the rock wall and rock mass, avoid damage to the rock wall, and is more conducive to the overall structural force stability of the rock wall beam. At present, the maximum thickness of rock cut by high-pressure water jet is about 30-50 cm. Considering the 30 cm drilling interval required for the construction of crane beams on the rock wall of underground cavern workshop, the jet mechanism can be used to extend into the hole to cut the rock wall. Therefore, after comprehensive consideration, the construction method of high-pressure abrasive water jet is adopted.

[0005] The length of the underground cavern plant of a pumped-storage power station can reach hundreds of meters. If a traditional single-pipeline jet mechanism is used to extend into the holes one by one, the cutting efficiency will be low. At the same time, considering the limited accuracy of on-site drilling construction, it is difficult to refer to the cutting path of the previous hole when the single-pipeline jet mechanism is extended into the hole for cutting. The cutting surface may be misaligned, affecting the flatness of the cut rock wall. Therefore, a double-pipeline jet mechanism is used to emit opposing jets for cutting, which can simultaneously ensure the uniformity of the cutting plane and ensure the efficiency and flatness of the construction.

[0006] However, the inventors have found that there is no precedent for the application of high-pressure water jet systems in the cutting of rock wall crane beams. Therefore, there are still many problems to be solved when using jets for cutting, which are specifically reflected in:

[0007] (1) The jet mechanism must be moved along the direction of the drilling arrangement for construction. It is necessary to try to ensure that the two jet protection steel pipes are in the same position when they are inserted into the same hole. The uneven ground may cause a large error and affect the construction quality. If the ground construction is specially processed, the cost is too high. At the same time, if each step is moved by manpower, the moving speed is too slow, which may affect the construction efficiency.

[0008] (2) The cross-sectional shape of the cutting part of the rock anchor beam construction is a right-angle trapezoid. The cutting work must be divided into two parts: vertical cutting and oblique cutting. The design of the cutting device needs to consider the applicability of cutting work at different angles. At the same time, the device must be easy to operate and easy to adjust. The existing equipment cannot automatically adjust to adapt to cutting work at various angles.

[0009] (3) The on-site drilling construction accuracy is not high. When the two jet protection steel pipes are inserted into the hole at the same time, they may get stuck in the hole due to the difference in hole spacing and angle, making it difficult to accurately insert them into the hole for cutting operations;

[0010] (4) The nozzles currently on the market are straight-line, that is, the water supply pipe and the nozzle are in the same straight line, and there is a lack of L-shaped nozzles to complete the lateral flow diversion; in addition, when the jet mechanism is extended into the hole for cutting, the high-pressure water may be sprayed to the opposite nozzle due to the opposing jets emitted between the nozzles, which affects the service life of the nozzle;

[0011] (5) During jet cutting, dust, rock slag, etc. are easily generated on site, which are difficult to discharge in underground caverns, which not only obstructs vision and affects construction efficiency, but also seriously affects the life and health of construction workers;

[0012] (6) When high-pressure jets are cutting rocks, the jet pressure can reach tens or even hundreds of MPa, which is very powerful and may cause harm to the life and health of people around. Therefore, when the mechanism is in operation, people should stay away from the jet mechanism as much as possible. Most existing cutting methods require more close manual contact;

[0013] (7) There is currently no precedent for the application of high-pressure water jet systems in rock wall crane beam cutting construction, and there is a lack of relevant instructions and specifications for the high-pressure water jet construction process methods for rock anchor beams. Summary of the invention

[0014] In order to address the deficiencies in the prior art, the present invention provides a high-pressure water jet cutting device and method for rock wall crane beams in underground cavern workshops, which utilizes water jet technology to replace blasting construction, reduces the safety issues and construction interference caused by traditional drilling and blasting methods, and improves the construction quality and efficiency of rock wall crane beams.

[0015] In order to achieve the above object, the present invention adopts the following technical solution:

[0016] In a first aspect, the present invention provides a high-pressure water jet cutting device for crane beams on rock walls of underground cavern workshops.

[0017] A high-pressure water jet cutting device for a crane beam on a rock wall of an underground cavern workshop, comprising at least: a guide mechanism, a support mechanism and a jet cutting mechanism;

[0018] The guide mechanism is detachably connected to the steel pipe frame, and the steel pipe frame is erected according to the punching position. The steel pipe frame can be repeatedly built and used, which avoids a huge amount of ground processing workload and material waste, and reduces costs; the support mechanism of the present invention is connected to the guide mechanism and can move on the guide mechanism, so that the construction position can be conveniently moved in a directional manner; the present invention realizes plug-and-play during on-site construction through the detachable steel pipe frame, positioning steel pipe and guide structure; each support column of the steel pipe frame of the present invention can be adaptively adjusted according to the unevenness of the ground, so as to maintain the level of the support frame surface, thereby ensuring the horizontal arrangement of the guide rails in the guide mechanism;

[0019] The support mechanism described in the present invention is connected to the jet cutting mechanism, and the support mechanism is used to drive the hollow jet pipeline protection tube of the jet cutting mechanism to control the angle, and can realize automatic lateral movement and focusing; the end of the hollow jet pipeline protection tube of the present invention is connected with a nozzle for spraying, and the steel pipe rack is connected to the positioning steel pipe. The positioning steel pipe can guide the hollow jet pipeline protection tube to extend into the hole in the designed orientation for cutting work, thereby improving construction accuracy.

[0020] In one implementation of the present invention, the nozzle is a bent nozzle, and the angle between the vertical tube and the horizontal tube of the bent nozzle is greater than 90°, so that the spray direction of the nozzle is offset by a set angle relative to the plane perpendicular to the vertical tube, thereby solving the problem of opposing jets emitted between high-pressure nozzles affecting the service life of the nozzles, fully considering the protection of the nozzles, and the angle of the nozzle is controllable and adjustable, thereby avoiding to the greatest extent the opposing high-pressure jets emitted between the nozzles directly spraying onto the opposite nozzle, avoiding wear and damage to the nozzles, and extending the service life of the nozzles.

[0021] Specifically, the curved nozzle of the present invention can be an L-shaped nozzle, and the corners of the nozzle can be arc-shaped. At the same time, the offset here is a relative concept, that is, when the vertical tube of the nozzle is arranged vertically relative to the horizontal plane, the horizontal tube of the nozzle is offset downward by a set angle relative to the horizontal plane.

[0022] In one implementation of the present invention, the execution control mechanisms of the guide mechanism, the support mechanism and the jet cutting mechanism are respectively connected to the on-site control terminal for communication. The on-site control terminal communicates with the remote controller via a wireless communication unit and can be operated by wireless remote control. Combined with various electric drive mechanisms, there is no need for close contact between personnel, thus avoiding harm to personnel caused by high-pressure jets during close-range operation.

[0023] In an implementation of the present invention, the guide mechanism is connected to a horizontal adjustment mechanism, which can realize horizontal adjustment of the guide mechanism and ensure that the support mechanism can move horizontally.

[0024] The guide mechanism described in the present invention at least includes: a first guide rail, a sliding member and a first driving mechanism. The first guide rail is detachably fixed on a steel pipe rack. The steel pipe rack is connected to a plurality of positioning steel pipes for the hollow jet pipeline protection pipe to extend therein. The sliding member is slidably connected to the first guide rail. The first driving mechanism is connected to the sliding member to drive the sliding member to move on the first guide rail. The support mechanism is connected to the sliding member to move with the sliding member. The present invention uses on-site steel pipes to build a positioning steel pipe rack and set a first guide rail. A first driving mechanism is set on the first guide rail to drive the jet mechanism to move, so that the jet mechanism can move smoothly and stably along the fixed first guide rail. The first guide rail can make the moving path of the jet mechanism precisely controllable.

[0025] In the present invention, the steel pipe rack, the positioning steel pipe and the first guide rail are respectively used as modular units. The steel pipe rack is detachably connected to the positioning steel pipe, and the first guide rail is detachably connected to the steel pipe rack. The modular design is adopted to achieve plug-and-play and improve work efficiency.

[0026] In one implementation of the present invention, the support mechanism at least includes: a second driving mechanism, a floating positioning mechanism, a third driving mechanism and a frame;

[0027] The hollow jet pipeline protection tube is connected to the floating positioning mechanism, the floating positioning mechanism is connected to the second driving mechanism, the bracket of the second driving mechanism is movably connected to the frame, the output end of the third driving mechanism is connected to the bracket for adjusting the working angle of the hollow jet pipeline protection tube, and the third driving mechanism is connected to the frame.

[0028] In the present invention, preferably, the third driving mechanism adopts an electric push rod. The electric push rod can be used to arbitrarily adjust the working angle of the jet cutting mechanism mounted on the bracket mechanism to achieve automatic lateral movement and focusing. At the same time, the second guide rail on the bracket in a certain direction can be arranged according to specific conditions. By adjusting the arrangement of the second guide rail and the state of the electric push rod, the jet cutting mechanism can achieve the vertical cutting and oblique cutting required in the construction of rock anchor beams.

[0029] The present invention can control the fine adjustment of the position of the hollow jet pipeline protection tube in the plane through the setting of the floating positioning mechanism, guide the hollow jet pipeline protection tube to move in the vertical direction, so that the hollow jet pipeline protection tube extends into the positioning steel pipe and the hole at a suitable orientation and angle.

[0030] Furthermore, the floating positioning mechanism at least comprises: a rear end floating positioning mechanism, the rear end floating positioning mechanism being connected to the roller;

[0031] The rear floating positioning mechanism has two through holes, which are used for floating positioning of two hollow jet pipeline protection pipes respectively, and each through hole is provided with a first base, a fixing plate, a first floating block and a spring;

[0032] The hollow jet pipeline protection tube passes through the fixed plate and is fixedly connected to the fixed plate. The fixed plate is fixedly connected to the first floating block. The first floating block is located in the hollow space of the first base and is floatingly connected to the inner wall of the hollow space of the first base through a spring.

[0033] In one implementation of the present invention, the floating positioning mechanism also includes a front-end floating positioning mechanism, which has two through holes, each of which is provided with a second base, a floating bearing, a second floating block and a spring, the hollow jet pipeline protection tube passes through the floating bearing and can reciprocate in the floating bearing, the floating bearing is embedded and fixed in the second floating block, and the second floating block is floatingly connected to the inner wall of the hollow space of the second base through a spring.

[0034] The floating positioning mechanisms on the two hollow jet pipeline protection tubes of the present invention are relatively independent and can therefore be adjusted separately. When there are slight differences in the spacing and angles between the different positioning steel pipes into which the two hollow jet pipeline protection tubes are extended, the angles and orientations of the two jet protection steel pipes can be fine-tuned instantly through the floating positioning mechanisms, so that the protection steel pipes can be extended into the holes at appropriate angles to work, thus avoiding the problem of the jet protection steel pipes getting stuck in the holes.

[0035] In one implementation of the present invention, the jet cutting mechanism includes a first jet cutting mechanism and a second jet cutting mechanism, and the first jet cutting mechanism and the second jet cutting mechanism both include: a nozzle and a hollow jet pipeline protection tube connected to the nozzle;

[0036] The nozzle is connected to the high-pressure water jet pump group through a high-pressure water pipeline, and the nozzle is connected to the sand adding mechanism through a sand conveying pipeline. The two nozzles of the first jet cutting mechanism and the second jet cutting mechanism are arranged relatively for opposite cutting.

[0037] In one implementation of the present invention, the cutting device also includes: a dust suction system; the dust suction system includes: a dust hood, a dust suction pipeline and an industrial vacuum cleaner, the dust hood is trumpet-shaped, and has reserved openings in the center and sides of the dust hood, and the opening sizes are respectively consistent with the outer diameter of the hollow jet pipeline protection tube and the inner diameter of the dust suction pipeline; the dust hood is sleeved on the jet protection tube in the jet cutting mechanism through the central reserved opening, and the dust suction pipeline connects the dust hood with the industrial vacuum cleaner through the reserved interface on the side of the dust hood; during construction, the dust hood can be positioned close to the pipe mouth of the steel pipe, so that the smoke and dust generated by cutting are confined in the hole below the dust hood, and the dust hood is connected to the industrial vacuum cleaner so that the dust below the dust hood can be sucked away by the vacuum cleaner, thereby keeping the construction environment clean and avoiding the impact of dust.

[0038] In a second aspect, the present invention provides a working method of a high-pressure water jet cutting device for a crane beam on a rock wall of an underground cavern workshop, using at least one high-pressure water jet cutting device for a crane beam on a rock wall of an underground cavern workshop described in the first aspect of the present invention, including the following process:

[0039] The guide mechanism guides the movement of the support mechanism, and adjusts the working position and angle of the jet protection steel pipe in the jet cutting mechanism through the support mechanism, so that the jet protection steel pipe extends into the hole along the positioning steel pipe, and the high-pressure jet is emitted by the jet cutting mechanism to perform cutting construction;

[0040] The working parameters of the jet cutting mechanism are adjusted according to the data of each sensor element on the bracket mechanism, wherein the sensor element includes at least a force sensor element and an inclination sensor element, and the working parameters include at least a moving speed and a jet pressure.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] 1. The present invention fully considers that the moving mode of the jet mechanism will greatly affect the construction quality accuracy, construction efficiency and on-site cost control. The on-site steel pipe is used to build a positioning steel pipe rack and set a guide rail. A belt driving mechanism is set on the guide rail to drive the jet mechanism to move, so that the jet mechanism can move smoothly and stably along the fixed guide rail direction; the guide rail can make the moving path of the jet mechanism accurately controllable, and the positioning steel pipe can guide the jet mechanism to extend into the hole in the designed orientation for cutting, thereby improving the construction accuracy; the steel pipe rack can be repeatedly built and used, thereby avoiding a huge amount of ground processing workload and waste of materials, and reducing costs; the present invention utilizes modular design, and the base part is divided into three modules: a steel pipe rack, a positioning steel pipe and a guide rail, so as to realize plug-and-play; in addition, each pillar of the steel pipe rack can be adaptively adjusted according to the unevenness of the ground to maintain the level of the support frame surface; at the same time, the use of a motor and a belt for driving can greatly reduce the labor intensity of human labor, realize the mechanization of the construction process, and improve the construction efficiency.

[0043] 2. The present invention fully considers the applicability of the jet cutting mechanism to meet cutting work at different angles, and also considers the operability of the device. By utilizing sensors and feedback mechanisms and the electric push rod mounted on the bracket mechanism, the working angle of the jet cutting mechanism mounted on the bracket mechanism can be adjusted arbitrarily to achieve automatic lateral movement and focusing. At the same time, guide rails in a certain direction can be arranged according to specific conditions. By adjusting the arrangement of the guide rails and the state of the electric push rod, the jet cutting mechanism can achieve the vertical cutting and oblique cutting required in the construction of rock anchor beams.

[0044] 3. In order to solve the technical problems that the jet protection steel pipe is difficult to accurately extend into the hole for cutting operation and is easy to get stuck in the hole, the present invention fully considers the adjustment requirements when the jet protection steel pipe is extended into the steel pipe, and arranges a rear end floating positioning mechanism and a front end floating positioning mechanism on the bracket mechanism. The jet protection steel pipe of the jet cutting mechanism can be controlled to fine-tune the position in the plane, guide the jet protection steel pipe to move in the vertical direction, so that the jet protection steel pipe can extend into the positioning steel pipe and the hole at a suitable orientation and angle; at the same time, the floating positioning mechanisms on the two jet protection steel pipes are relatively independent, and therefore can be adjusted separately. When there are slight differences in spacing and angles between the different positioning steel pipes extended by the two jet protection steel pipes, the angle orientation of the two jet protection steel pipes can be fine-tuned respectively through the floating positioning mechanism in real time, so that the protection steel pipes can be extended into the hole at a suitable angle for work, thereby avoiding the problem of the jet protection steel pipe getting stuck in the hole.

[0045] 4. Taking actual construction needs into consideration, the present invention designs a new L-shaped nozzle to achieve lateral cutting. In order to solve the problem that the opposing jets emitted between high-pressure nozzles affect the service life of the nozzles, full consideration is given to the protection of the L-shaped nozzles. The spraying direction of the high-pressure nozzle is tilted downward at a certain angle from the horizontal direction, and the nozzle angle is controllable and adjustable, which avoids the opposing high-pressure jets emitted between the nozzles directly spraying onto the opposite nozzle to the greatest extent, thereby avoiding wear and damage to the nozzles and extending the service life of the nozzles.

[0046] 5. In order to solve the problem that the dust generated at the jet construction site will obstruct the line of sight, affect the construction efficiency and the life and health of the construction workers, the present invention fully considers the blocking and removal of the dust generated during construction. In the jet cutting mechanism, a dust hood with adjustable position along the direction of the steel pipe is sleeved on the jet protection steel pipe. During construction, the dust hood can be positioned close to the pipe mouth of the steel pipe, so that the smoke and dust generated by the cutting are confined in the holes below the dust hood. The dust hood is connected to the industrial vacuum cleaner, so that the dust below the dust hood can be sucked away by the vacuum cleaner, thereby keeping the construction environment clean and avoiding the impact of dust.

[0047] 6. The present invention fully considers the potential threat to personnel posed by the huge power of high-pressure jets. Various types of automated actuators are used in the design, and multiple protective measures are set up. The movement and operation of the jet mechanism are driven by a belt drive mechanism, and wireless remote control operation can be adopted. There is no need for close contact between personnel, thus avoiding harm to personnel caused by high-pressure jets during close-range operation. The pipelines all adopt ultra-high-pressure pressure-resistant pipelines, and the pipeline interfaces are designed with pipeline protection covers. Personnel wear protective work clothes during operation. Multiple lines of defense can effectively prevent high-pressure water jets from causing harm to personnel life safety, thus ensuring the safety of the construction process.

[0048] 7. The present invention proposes a construction process method for cutting rock anchor beams of underground cavern workshops using high-pressure water jets. According to the workload or cost budget, multiple jet cutting mechanisms can be arranged to operate together. In addition, by sensing parameters such as vibration and reaction force, and matching corresponding intelligent control algorithms, the in-hole feed parameters such as water pressure and moving speed can be automatically adjusted to achieve remote and intelligent control of the entire system.

[0049] 8. The present invention fully considers the limitations of traditional blasting construction methods. By proposing the application of water jet cutting, it reduces the safety issues and construction interference caused by traditional drilling and blasting methods, improves the construction quality and efficiency of rock wall crane beams, and provides equipment support for promoting the development and engineering application of water jet technology in the field of water conservancy and hydropower engineering technology. The present invention has a reasonable structural design, a simple construction method, is practicable, and has a high application value.

[0050] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0052] Figure 1 A schematic diagram of the overall structure of the high-pressure water jet cutting device for the rock wall crane beam of an underground cavern workshop provided by the present invention;

[0053] Figure 2 A schematic diagram of the structure of the steel pipe rack and the guide mechanism provided by the present invention;

[0054] Figure 3 A schematic diagram of the structure of the support mechanism and the jet cutting mechanism provided by the present invention;

[0055] Figure 4 A partial cross-sectional view of the flow diversion mechanism in the jet cutting mechanism provided by the present invention;

[0056] Figure 5 A partial schematic diagram of a high-pressure nozzle in a jet cutting mechanism provided by the present invention;

[0057] Figure 6 A schematic diagram of the water jet cutting device provided by the present invention performing cutting work;

[0058] Figure 7 A schematic diagram of the nozzle structure provided by the present invention;

[0059] Figure 8 A schematic diagram of a vertical cutting scheme of a water jet cutting device provided by the present invention;

[0060] Fig. 9 A schematic diagram of an inclined cutting scheme of a water jet cutting device provided by the present invention;

[0061] in:

[0062] 1. High-pressure water jet pump set; 2. Sand adding mechanism; 3. Sand conveying pipeline; 4. High-pressure water pipeline; 5. Steel pipe rack; 6. Guide mechanism; 7. Bracket mechanism; 8. Jet cutting mechanism; 9. Dust hood; 10. Dust suction pipeline; 11. Industrial vacuum cleaner;

[0063] 51. Bracket steel pipe; 52. Drilling positioning steel pipe;

[0064] 61. Horizontal adjustment mechanism; 62. Guide rail; 63. Slider; 64. Belt drive mechanism; 641. Belt; 642. Motor; 643. Fixed bracket; 644. Pulley;

[0065] 71, Z-axis driving mechanism; 711, Z-axis bracket; 712, pulley; 713, Z-axis guide rail; 714, roller; 715, motor bracket; 716, motor;

[0066] 721, rear floating positioning mechanism; 722, front floating positioning mechanism; 73, hollow jet pipeline protection tube; 74, drag chain; 75, electric push rod; 76, frame; 761, supporting square tube; 762, roller; 77, dust suction device; 78, L-shaped high-pressure nozzle; 781, high-pressure water pipeline connector; 782, sand transport pipeline connector;

[0067] 7211, first base; 7212, cover plate; 7213, guide positioning screw; 7214, fixing plate; 7215, first floating block; 7216, spring; 7217, top screw;

[0068] 7221. Second base; 7222. Cover plate; 7223. Guide positioning screw; 7224. Floating bearing; 7225. Second floating block; 7226. Spring. DETAILED DESCRIPTION

[0069] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0070] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0071] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0072] In the implementation method, a high-pressure water jet cutting device for the crane beam of the underground cavern workshop rock wall is proposed, such as Figure 1 As shown, it includes a high-pressure water jet pump group 1, a sand adding mechanism 2, a sand conveying pipeline 3, a high-pressure water pipeline 4, a steel pipe rack 5, a guide mechanism 6, a bracket mechanism 7 (for supporting a jet cutting mechanism 8), a jet cutting mechanism 8, a dust removal hood 9, a dust suction pipeline 10 and an industrial vacuum cleaner 11.

[0073] More specifically, Figure 8 and Fig. 9As shown, it is a schematic diagram of its specific usage status. The guide mechanism 6 is arranged using the steel pipe rack 5 supported on site according to the drilling position. A support mechanism 7 is provided above the guide mechanism 6, and the guide mechanism 6 can guide the moving path of the support mechanism 7; the upper end of the support mechanism 7 is connected to support the jet cutting mechanism 8, and the working position and angle of the jet protection steel pipe in the jet cutting mechanism 8 can be adjusted, so that the hollow jet pipeline protection pipe can be smoothly extended into the hole for work, which solves the problem of precise adjustment of the position of the hollow jet pipeline protection pipe. The jet cutting mechanism 8 can emit a high-pressure jet for cutting construction.

[0074] like Figure 2 As shown, the steel pipe rack 5 includes a support steel pipe 51 and a drilling positioning steel pipe 52, and the guide mechanism 6 is arranged on the steel pipe rack 5, and the guide mechanism 6 includes a horizontal adjustment mechanism 61, an X-axis guide rail 62 (i.e., a first guide rail), a slider 63 (i.e., a sliding member) and a belt drive mechanism 64 (i.e., a first drive mechanism).

[0075] In this embodiment, preferably, the horizontal adjustment mechanism 61 is disposed between the guide rail 62 (ie, the first guide rail) and the steel pipe frame 5, and can adjust the horizontal position of the guide rail 62 (ie, the first guide rail).

[0076] In this embodiment, more specifically, the slider 63 (ie, the sliding member) is located between the guide rail 62 (ie, the first guide rail) and the bracket mechanism 7, and can assist the bracket mechanism 7 in moving on the guide rail 62 (ie, the first guide rail) to reduce friction.

[0077] In this embodiment, preferably, the belt drive mechanism 64 (i.e., the first drive mechanism) includes a belt 641 (i.e., the first belt), a motor 642 (i.e., the first motor), a fixed bracket 643 and a pulley 644 (i.e., the first pulley), and the slider 63 (i.e., the sliding member) is driven by the belt drive mechanism 64 (i.e., the first drive mechanism) and moves in the X direction along the guide rail 62 (i.e., the first guide rail). In this embodiment, the X direction refers to the layout direction of the guide rail 62 (i.e., the first guide rail), the direction perpendicular to the X direction in the horizontal plane is the Y direction, and the direction perpendicular to the horizontal plane or at a set angle is the Z direction.

[0078] In the present embodiment, more specifically, the belt drive mechanism 64 (i.e., the first drive mechanism) is arranged along the path of the guide rail 62 (i.e., the first guide rail), and the belt 641 (i.e., the first belt), driven by the motor 642 (i.e., the first motor), can pull the bracket mechanism 7 on the guide rail 62 (i.e., the first guide rail) to move along the path of the guide rail 62 (i.e., the first guide rail) with the assistance of the slider 63 (i.e., the sliding member).

[0079] More specifically, the steel pipe rack 5 of this embodiment is erected according to the drilling position of the on-site construction, the slider 63 (i.e., the sliding member) is slidably connected to the guide rail 62 (i.e., the first guide rail), the bracket mechanism 7 is connected to the slider 63 (i.e., the sliding member) to move with the slider 63 (i.e., the sliding member), the motor 642 (i.e., the first motor) is connected to the frame where the guide rail 62 (i.e., the first guide rail) is located through the fixed bracket 643, the output shaft of the motor 642 (i.e., the first motor) is connected to the pulley 644 (i.e., the first pulley), and the belt 641 (i.e., the first belt) is sleeved on the outside of the pulley 644 (i.e., the first pulley) to rotate under the drive of the pulley 644 (i.e., the first pulley) through the slider 63 (i.e., the sliding member) to pull the bracket mechanism 7 along the guide rail 62 (i.e., the first guide rail).

[0080] like Figure 3 As shown, the support mechanism 7 includes: a Z-axis driving mechanism 71, a floating positioning mechanism, a drag chain 74, an electric push rod 75, a frame 76 and a dust cover 77;

[0081] In this embodiment, preferably, the Z-axis driving mechanism 71 includes: a Z-axis bracket 711, a pulley 712 (i.e., a second pulley), a guide rail 713 (i.e., a second guide rail), a roller 714, a belt 715 (i.e., a second belt) and a motor 716 (i.e., a second motor);

[0082] The hollow jet pipeline protection tube 73 is connected to the roller 714 through the floating positioning mechanism 72, and the roller 714 is slidably connected to the guide rail 713 (i.e., the second guide rail);

[0083] The motor 716 (i.e., the second motor) is connected to the Z-axis bracket 711, the output shaft of the motor 716 (i.e., the second motor) is connected to the pulley 712 (i.e., the second pulley), the belt 715 (i.e., the second belt) is sleeved on the pulley 712 (i.e., the second pulley) to drive the roller 714 to move on the guide rail 713 (i.e., the second guide rail), the Z-axis bracket 711 is movably connected to the frame 76 (the movable connection here is preferably hinged, or other shaft connections, etc. may also be used), and the L-shaped high-pressure nozzle 78 is threadedly connected to the hollow jet pipeline protection tube 73.

[0084] Both the high-pressure water pipeline 4 and the water supply pipeline 3 partially penetrate into the air jet pipeline protection tube 73, the high-pressure water pipeline 4 connects the L-shaped high-pressure nozzle 78 and the high-pressure water jet pump group 1, and the sand delivery pipeline 3 connects the L-shaped high-pressure nozzle 78 and the sand adding mechanism 2; more specifically, the high-pressure water pipeline interface 781 of the L-shaped high-pressure nozzle 78 is connected to the high-pressure water pipeline 4, the sand delivery pipeline interface of the L-shaped high-pressure nozzle 78 is connected to the sand delivery pipeline 3, and the angle between the vertical pipe and the horizontal pipe of the L-shaped high-pressure nozzle 78 is greater than 90°.

[0085] The device of this embodiment also includes: a dust collection system; the dust collection system includes: a dust collection cover 77, a dust collection pipeline 10 and an industrial vacuum cleaner 11, the dust collection cover 77 is trumpet-shaped, and the center and side of the dust collection cover 77 have reserved openings, and the opening sizes are respectively consistent with the outer diameter of the hollow jet pipeline protection tube 73 and the inner diameter of the dust collection pipeline 10;

[0086] The dust hood 77 is placed on the hollow jet pipeline protection tube 73 through the central reserved hole, and the dust suction pipeline 10 connects the dust hood 77 with the industrial vacuum cleaner 11 through the reserved interface on the upper side of the dust hood 77, so that the area below the dust hood 77 is within the action range of the industrial vacuum cleaner 11 for dust removal operation.

[0087] In this embodiment, preferably, the floating positioning mechanism 72 includes a rear floating positioning mechanism 721 and a front floating positioning mechanism 722, the frame 76 includes a square tube 761 and a roller 762, and the L-shaped high-pressure nozzle 78 is connected to the hollow jet pipeline protection tube 73 by threads.

[0088] In this embodiment, preferably, the dust hood 77 is fixedly connected to the front end floating positioning mechanism 722, the front end floating positioning mechanism 722 is fixed to the lower end of the Z-axis drive mechanism 71, the rear end floating positioning mechanism 721 and the Z-axis drive mechanism 71 are connected to the roller 714 to realize Z-axis movement, the Z-axis drive mechanism 71 is connected to the frame 76 through a rotating shaft, the electric push rod 75 is respectively connected to the Z-axis drive mechanism 71 and the frame 76 through a hinge (more specifically, the ends of the electric push rod 75 are respectively hinged to the Z-axis bracket 711 and the frame 761), and the electric push rod 75 moves to realize the angle adjustment of the Z-axis drive mechanism 71 to meet the cutting of rock wall crane beams at different angles.

[0089] like Figure 4 As shown, the rear end floating positioning mechanism 721 includes: a first base 7211, a cover plate 7212, a guide positioning screw 7213, a fixed plate 7214, a first floating block 7215, a spring 7216 and a top screw 7214. The cover plate 7212 is connected to the first base 7211 through the guide positioning screw 7213, the hollow jet pipeline protection tube 73 is fixedly connected to the fixed plate 7214 through the top screw 7217, the fixed plate is connected to the first floating block 7215, and the first floating block 7215 is floatingly connected to the inner wall of the hollow space of the first base 7211 (a through hole space that can accommodate the first floating block 7215 and the spring 7216) through the spring 7216.

[0090] like Figure 5As shown, the front end floating positioning mechanism 722 includes: a second base 7221, a cover plate 7222, a guide positioning screw 7223, a floating bearing 7224, a second floating block 7225 and a spring 7226. The hollow jet pipeline protection tube 73 reciprocates in the floating bearing 7224. The cover plate 7222 is connected to the second base 7221 through the guide positioning screw 7223. The second floating block 7225 is floatingly connected to the inner wall of the hollow space of the second base 7221 (a through hole space that can accommodate the second floating block 7225 and the spring 7226) through the spring 7226.

[0091] In this embodiment, preferably, there are two hollow jet pipeline protection tubes 73, and the corresponding first floating blocks 7215 and second floating blocks 7225 also have two groups each.

[0092] like Figure 3 , Figure 4 , Figure 5 As shown, the floating positioning mechanism 72 can make the hollow jet pipeline protection tube 73 float and feed during the reciprocating motion along the Z-axis direction, thereby solving the problem of inaccurate positioning of the air gun drilling in the early stage.

[0093] like Figure 6 and Figure 7 As shown, the injection direction of the L-shaped high-pressure nozzle 78 is set at a certain angle a with the horizontal, which solves the problem of excessive wear of the nozzle due to spraying towards the opposite nozzle during the nozzle opposite injection process.

[0094] In this embodiment, preferably, the drag chain 74 is arranged on the Z-axis bracket along the direction of the guide rail 713 (i.e., the second guide rail) and is connected to one of the hollow jet pipeline protection tubes 73 to help guide the axial movement of the hollow jet pipeline protection tube 73.

[0095] 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 high-pressure water jet cutting device for crane beams on rock walls of underground cavern workshops, characterized in that: At least includes: a guide mechanism, a support mechanism and a jet cutting mechanism; The guide mechanism is detachably connected to the steel pipe frame, the steel pipe frame is erected according to the punching position, and the bracket mechanism is connected to the guide mechanism and can move on the guide mechanism; The support mechanism is connected to the jet cutting mechanism, and the support mechanism is used to adjust the angle of the hollow jet pipeline protection pipe of the jet cutting mechanism. The end of the hollow jet pipeline protection pipe is connected with a nozzle, and the steel pipe rack is connected to a positioning steel pipe for the hollow jet pipeline protection pipe to pass through; The nozzle is a bent nozzle, and the angle between the vertical tube and the horizontal tube of the bent nozzle is greater than 90°, so that the spray direction of the nozzle is offset by a set angle relative to the plane perpendicular to the vertical tube; The support mechanism at least comprises: a second driving mechanism, a floating positioning mechanism, a third driving mechanism and a frame; The hollow jet pipeline protection tube is connected to the floating positioning mechanism, the floating positioning mechanism is connected to the second driving mechanism, the bracket of the second driving mechanism is movably connected to the frame, the output end of the third driving mechanism is connected to the bracket for adjusting the working angle of the hollow jet pipeline protection tube, and the third driving mechanism is connected to the frame; The floating positioning mechanism comprises a rear floating positioning mechanism and a front floating positioning mechanism. There are two hollow jet pipeline protection pipes, and the corresponding floating positioning mechanisms have two groups. The two groups of floating positioning mechanisms are relatively independent and can be adjusted separately.

2. The high-pressure water jet cutting device for crane beams on rock walls of underground cavern workshops as claimed in claim 1, characterized in that: The execution control mechanisms of the guide mechanism, the support mechanism and the jet cutting mechanism are respectively connected to the on-site control terminal for communication, and the on-site control terminal communicates with the remote controller via a wireless communication unit.

3. The high-pressure water jet cutting device for crane beams on rock walls of underground cavern workshops as claimed in claim 1, characterized in that: The guide mechanism is connected to a horizontal adjustment mechanism, and the guide mechanism at least comprises: a first guide rail, a sliding member and a first driving mechanism; The first guide rail is detachably fixed on a steel pipe rack, the steel pipe rack is connected to a plurality of positioning steel pipes for the hollow jet pipeline protection pipe to extend therein, the sliding member is slidably connected to the first guide rail, the first driving mechanism is connected to the sliding member to drive the movement of the sliding member on the first guide rail, and the bracket mechanism is connected to the sliding member to move with the sliding member.

4. The high-pressure water jet cutting device for crane beams on rock walls of underground cavern workshops as claimed in claim 3, characterized in that: The steel pipe frame, the positioning steel pipe and the first guide rail are respectively used as modular units. The steel pipe frame is detachably connected to the positioning steel pipe, and the first guide rail is detachably connected to the steel pipe frame.

5. The high-pressure water jet cutting device for crane beams on rock walls of underground cavern workshops as claimed in claim 1, characterized in that: The rear end floating positioning mechanism is connected to the roller; The rear floating positioning mechanism has two through holes, which are used for floating positioning of two hollow jet pipeline protection pipes respectively, and each through hole is provided with a first base, a fixing plate, a first floating block and a spring; The hollow jet pipeline protection tube passes through the fixed plate and is fixedly connected to the fixed plate. The fixed plate is fixedly connected to the first floating block. The first floating block is located in the hollow space of the first base and is floatingly connected to the inner wall of the hollow space of the first base through a spring.

6. The high-pressure water jet cutting device for crane beams on rock walls of underground cavern workshops as claimed in claim 5, characterized in that: The front floating positioning mechanism has two through holes, each of which is provided with a second base, a floating bearing, a second floating block and a spring; The hollow jet pipeline protection tube passes through the floating bearing and can reciprocate in the floating bearing. The floating bearing is embedded and fixed in the second floating block. The second floating block is floatingly connected to the inner wall of the hollow space of the second base through a spring.

7. The high-pressure water jet cutting device for crane beams on the rock wall of an underground cavern workshop as claimed in any one of claims 1 to 4, characterized in that: The jet cutting mechanism comprises a first jet cutting mechanism and a second jet cutting mechanism, wherein the first jet cutting mechanism and the second jet cutting mechanism both comprise: a nozzle and a hollow jet pipeline protection tube connected to the nozzle; The nozzle is connected to the high-pressure water jet pump group through a high-pressure water pipeline, and the nozzle is connected to the sand adding mechanism through a sand conveying pipeline. The two nozzles of the first jet cutting mechanism and the second jet cutting mechanism are arranged relatively for opposite cutting.

8. The high-pressure water jet cutting device for crane beams on the rock wall of an underground cavern workshop as claimed in any one of claims 1 to 4, characterized in that: The cutting device further includes: a dust suction system; the dust suction system includes: a dust removal hood, a dust suction pipeline and an industrial vacuum cleaner, the dust removal hood is trumpet-shaped, and the center and side of the dust removal hood have reserved openings, and the opening sizes are respectively consistent with the outer diameter of the hollow jet pipeline protection tube and the inner diameter of the dust suction pipeline; The dust hood is sleeved on the jet protection tube in the jet cutting mechanism through a central reserved hole, and the dust suction pipeline connects the dust hood with the industrial vacuum cleaner through a reserved interface on the side of the dust hood.

9. A working method of a high-pressure water jet cutting device for a crane beam on a rock wall of an underground cavern workshop, characterized in that: Using the high-pressure water jet cutting device for the crane beam of the rock wall of the underground cavern workshop as described in any one of claims 1 to 8, The process includes: The guide mechanism guides the movement of the support mechanism, and adjusts the working position and angle of the jet protection steel pipe in the jet cutting mechanism through the support mechanism, so that the jet protection steel pipe extends into the hole along the positioning steel pipe, and the high-pressure jet is emitted by the jet cutting mechanism to perform cutting construction; The working parameters of the jet cutting mechanism are adjusted according to the data of each sensor element on the bracket mechanism, wherein the sensor element includes at least a force sensor element and an inclination sensor element, and the working parameters include at least a moving speed and a jet pressure.

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