Underwater concrete pier column efficient forcible entry device and method based on water jet with gas ring

Abstract

The invention discloses an underwater concrete pier column efficient forcible entry device and method based on gas ring water jet, and the device comprises an operation frame which is provided with a lifting frame, and the operation frame is detachably connected to a reinforced concrete pier column; the carrying mechanism comprises an annular moving assembly, a linear moving assembly and a nozzle carrying box, and the nozzle carrying box is slidably connected to the linear moving assembly; the spray head is mounted on the annular moving assembly, a high-pressure water spray is formed in the center of the spray head, and an annular gas nozzle is formed in the spray head; and the jet flow generating mechanism comprises a high-pressure water jet flow generating assembly and an air jet flow generating assembly, and the high-pressure water jet flow generating assembly and the air jet flow generating assembly communicate with the high-pressure water nozzle and the gas nozzle through high-pressure pipes correspondingly. The influence of the underwater environment on jet energy attenuation is made up. The operation process can be simplified, the construction efficiency is improved, the construction quality is ensured, and the safety guarantee of operators is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of underwater bridge concrete pier demolition, and in particular to an underwater concrete pier demolition high-efficiency demolition device and method based on a water jet with an air ring. Background Art

[0002] In the construction of bridge reconstruction, structural repair, etc., such as the demolition of concrete piers, underwater construction is often involved. Due to the influence of the underwater environment, the implementation of the operation is difficult. As an efficient crushing technology, high-pressure water jet crushing technology has been widely used in projects such as rock cutting and road pavement demolition. Among them, high-pressure water jet underwater in-situ cutting and removal of concrete has also been successfully applied. However, the special underwater environment determines the complexity of underwater construction. Underwater cutting has its unique theoretical basis and practical methods. The energy of traditional water jets decays rapidly in a submerged environment and cannot efficiently break concrete. Therefore, how to concentrate the jet in the core area and alleviate the impact energy attenuation outside the core section of the jet, so as to form an effective cutting of the underwater concrete body, there are few successful cases in China so far. At present, the demolition construction of underwater concrete piers in engineering mainly uses high-pressure water jet devices, including high-pressure water jet generators, water control stations, and underwater equipment. The high-pressure water jet is sprayed by the traditional nozzle in the underwater equipment to achieve the removal of the target. Due to the rapid energy decay of traditional jets in complex underwater environments, high-pressure water jets are unable to effectively cut and destroy demolition objects, the jet energy utilization rate is low, and they may even fail to operate normally when the underwater environment is too harsh.

[0003] Therefore, there is an urgent need to develop a new method and device for cutting underwater concrete piers with high-pressure water jets, so as to reduce the requirements for high-pressure jet devices, improve construction efficiency, reduce the construction cost of underwater operations, and ensure construction quality. Summary of the invention

[0004] The purpose of the present invention is to provide an underwater concrete pier column high-efficiency demolition device and method based on a water jet with an air ring, so as to solve the problems existing in the prior art.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides an underwater concrete pier column high-efficiency demolition device based on a water jet with an air ring, comprising:

[0006] A work frame, on which a hoisting frame is installed, and the work frame can be detachably connected to a reinforced concrete pier column;

[0007] A mounting mechanism, the mounting mechanism includes a circumferential movement component, a linear movement component and a nozzle mounting box. The linear movement component is horizontally and fixedly connected to the operation frame. The nozzle mounting box is slidably connected to the linear movement component. The circumferential movement component is fixedly connected to the nozzle mounting box and is coaxially arranged with the reinforced concrete pier. The linear movement component is arranged parallel to the reinforced concrete pier;

[0008] A spray head, the spray head is mounted on the circumferential movement component, and is correspondingly arranged with the reinforced concrete pier. A high-pressure water spray opening is provided at the center position of the spray head, and an annular gas spray opening is provided on the spray head;

[0009] A jet generating mechanism, the jet generating mechanism includes a high-pressure water jet generating component and an air jet generating component. The high-pressure water jet generating component and the air jet generating component are respectively communicated with the high-pressure water spray opening and the gas spray opening through high-pressure pipes.

[0010] According to the underwater concrete pier high-efficiency demolition device based on the air-ring water jet provided by the present invention, the operation frame includes two groups of transverse fixing frames and one group of longitudinal fixing frames. The longitudinal fixing frame is fixed between the two groups of transverse fixing frames. One of the groups of transverse fixing frames is fixed at the top of the reinforced concrete pier, and the hoisting frame is fixed on the longitudinal fixing frame.

[0011] According to the underwater concrete pier high-efficiency demolition device based on the air-ring water jet provided by the present invention, the linear movement component includes two groups of linear tracks and two groups of sliding rods. The linear tracks and the sliding rods are both fixed between the two transverse fixing frames. The linear tracks are arranged between the two groups of sliding rods and are arranged parallel to the sliding rods. The nozzle mounting box is slidably connected to the sliding rods. A surrounding plate is fixedly connected to the top of the nozzle mounting box. The cross-sectional shape of the surrounding plate is a U-shaped. The linear track passes through the surrounding plate. A transmission component is installed inside the surrounding plate, and the transmission component is in transmission cooperation with the linear track.

[0012] According to the underwater concrete pier high-efficiency demolition device based on the air-ring water jet provided by the present invention, the circumferential movement component includes an annular track fixedly connected to the bottom of the nozzle mounting box. The annular track is coaxially arranged with the reinforced concrete pier. An annular groove is provided on the annular track. A fixed beam is slidably connected in the annular groove. An annular sliding rail is provided on the bottom surface of the annular groove. A tooth groove is provided along the contour surface inside the annular sliding rail. A transmission gear is rotatably connected to the bottom of the fixed beam. The transmission gear meshes with the tooth groove. The spray head is fixedly connected to the fixed beam. A transmission motor is installed on the fixed beam, and the transmission motor is in transmission cooperation with the transmission gear.

[0013] According to the underwater concrete pier high-efficiency demolition device based on water jet with air ring provided by the present invention, the high-pressure water jet generating assembly includes a water tank, a water pump, a booster, a first one-way valve, an accumulator, and a second one-way valve. The water tank, the water pump, the booster, the first one-way valve, the accumulator, and the second one-way valve are connected in series in sequence, and the second one-way valve is connected to the high-pressure water nozzle on the nozzle through the high-pressure pipe.

[0014] According to the underwater concrete pier high-efficiency demolition device based on water jet with air ring provided by the present invention, the air jet generating assembly includes an air pump, an air box, and a third one-way valve. The air pump, the air box, and the third one-way valve are connected in series in sequence, and the third one-way valve is connected to the gas nozzle on the nozzle through the high-pressure pipe.

[0015] According to the underwater concrete pier high-efficiency demolition device based on air ring water jet provided by the present invention, sliding holes are symmetrically opened on the nozzle carrying box, and the sliding rod passes through the sliding holes and slides with the nozzle carrying box.

[0016] The method for efficiently demolishing underwater concrete piers based on water jet with air ring includes the following steps:

[0017] S1: Before launching the underwater equipment, connect and fix the high-pressure pipe, signal cable, hoisting cable, wire rope, sprinkler head and operating frame. According to the operating water depth, match the high-pressure pipe, signal cable, etc. with sufficient length and integrate the wiring harness;

[0018] S2: The diver dives to the predetermined position with the jet-breaking pier work frame, fixes the work frame at both ends of the concrete pier to be worked on, and exits the water after confirming that the nozzle travel range can operate normally;

[0019] S3: Start cutting. The nozzle starts cutting axially from the top of the pile, and the circumferential cutting operation is achieved through the circumferential moving assembly;

[0020] S4: After the concrete is broken within the equipment’s position, move to the next working section;

[0021] S5: Repeat S3 until the concrete pier is demolished;

[0022] S6: Divers go into the water to dismantle the work frame, and use lifting equipment to lift the work frame back to the surface, and the demolition work is completed.

[0023] The present invention discloses the following technical effects:

[0024] 1. The energy of the jet ejected by the gas-liquid two-phase jet nozzle with an air ring is mainly concentrated in the axial area, and the energy decays slowly, so that the jet can still maintain sufficient impact force and destructive ability over a long distance.

[0025] 2. Due to the effect of the air ring, the constant velocity core section of the jet is longer, so that the jet can still have a high speed and impact force at a longer distance. Due to the concentrated energy and the long constant velocity core section, the gas-liquid two-phase jet with the air ring has a strong impact and destructive ability on the target body, so that the underwater concrete pier demolition method based on the water jet with the air ring provided by the present invention has significant advantages in applications that require high impact force.

[0026] 3. When the present invention is operated underwater, facing the influence of the complex underwater environment, the gas-liquid two-phase jet with an air ring can ensure the effective cutting of the predetermined construction site, reduce the friction resistance between the water jet and the environmental medium, thereby increasing the effective target distance, which not only reduces the water consumption required for the high-pressure water jet generating device and reduces the water cost of hydraulic operations, but also can complete efficient demolition under lower system water pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic structural diagram of an underwater concrete pier column high-efficiency demolition device based on a water jet with an air ring according to the present invention;

[0029] Figure 2 It is an axonometric view of the circumferential moving assembly of the present invention;

[0030] Figure 3 It is a front view of the circumferential moving assembly of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the jet generating mechanism of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the nozzle carrying box of the present invention.

[0033] Among them, 1. lifting frame; 2. nozzle carrying box; 3. nozzle; 4. horizontal fixing frame; 5. longitudinal fixing frame; 6. linear track; 7. sliding rod; 8. circular track; 9. circular groove; 10. fixed beam; 11. transmission gear; 12. water tank; 13. supercharger; 14. first one-way valve; 15. accumulator; 16. second one-way valve; 17. air pump; 18. air box; 19. third one-way valve; 20. sliding hole; 21. water pump. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figure 1-Figure 5 The present invention provides an underwater concrete pier column high-efficiency demolition device based on a water jet with an air ring, comprising:

[0037] A work frame, on which a hoisting frame 1 is installed, and the work frame can be detachably connected to the reinforced concrete pier column;

[0038] The carrying mechanism includes a circumferential moving component, a linear moving component and a nozzle carrying box 2, wherein the linear moving component is horizontally fixedly connected to the work frame, the nozzle carrying box 2 is slidably connected to the linear moving component, the circumferential moving component is fixedly connected to the nozzle carrying box 2, and the circumferential moving component is coaxially arranged with the reinforced concrete pier column, and the linear moving component is parallel to the reinforced concrete pier column;

[0039] Nozzle 3, which is mounted on the annular moving assembly and is arranged correspondingly between the nozzle 3 and the reinforced concrete pier column. A high-pressure water spray is provided at the center of the nozzle 3, and an annular gas nozzle is provided on the nozzle 3;

[0040] The jet generating mechanism comprises a high-pressure water jet generating component and an air jet generating component. The high-pressure water jet generating component and the air jet generating component are respectively connected with the high-pressure water nozzle and the gas nozzle through high-pressure pipes.

[0041] According to a further optimization scheme, the working frame includes two groups of transverse fixing frames 4 and one group of longitudinal fixing frames 5. The longitudinal fixing frames 5 are fixed between the two groups of transverse fixing frames 4. One group of transverse fixing frames 4 is fixed to the top of the reinforced concrete pier, and the lifting frame 1 is fixed on the longitudinal fixing frames 5.

[0042] For a further optimized solution, the linear movement component includes two groups of sliding rods 7 on a linear track 6. The linear track 6 and the sliding rods 7 are both fixed between two transverse fixing frames 4. The linear track 6 is arranged between the two groups of sliding rods 7, and the linear track 6 and the sliding rods 7 are arranged in parallel. The nozzle mounting box 2 is slidably connected to the sliding rods 7. A retaining plate is fixedly connected to the top of the nozzle mounting box 2. The cross-sectional shape of the retaining plate is in the shape of a "匚". The linear track 6 passes through the retaining plate, and a transmission component is installed inside the retaining plate. The transmission component is in transmission cooperation with the linear track 6. The retaining plate and the linear track 6 are matched by a gear-rack or other structures to ensure that the nozzle mounting box 2 can be driven to move linearly along the linear track 6.

[0043] For a further optimized solution, the circumferential movement component includes an annular track 8 fixedly connected to the bottom of the nozzle mounting box 2. The annular track 8 is coaxially arranged with the reinforced concrete pier column. An annular groove 9 is provided on the annular track 8. A fixed beam 10 is slidably connected in the annular groove 9. An annular slide rail is provided on the bottom surface of the annular groove 9, and a tooth groove is provided along the contour surface in the annular slide rail. A transmission gear 11 is rotatably connected to the bottom of the fixed beam 10. The transmission gear 11 meshes with the tooth groove. The nozzle 3 is fixedly connected to the fixed beam 10. A transmission motor is installed on the fixed beam 10, and the transmission motor is in transmission cooperation with the transmission gear 11. The nozzle 3 and the fixed beam 10 are connected by a universal joint or other structures to ensure that the angle of the nozzle 3 can be adjusted according to actual needs. In this embodiment, an annular gas nozzle and a high-pressure water nozzle arranged between the annular gas nozzles are provided on the nozzle 3. Since the high-speed gas ring wraps the water jet, it can reduce the attenuation of the jet energy, make the jet energy concentrated in the axial region, and the outer jet velocity of the core section decays slowly, which can improve the construction efficiency and form an effective cutting of the concrete pier column.

[0044] For a further optimized solution, the high-pressure water jet generating component includes a water tank 12, a water pump 21, a supercharger 13, a first one-way valve 14, an accumulator 15, and a second one-way valve 16. The water tank 12, the water pump 21, the supercharger 13, the first one-way valve 14, the accumulator 15, and the second one-way valve 16 are connected in series in sequence. The second one-way valve 16 is connected to the high-pressure water nozzle on the nozzle 3 through a high-pressure pipe.

[0045] For a further optimized solution, the air jet generating component includes an air pump 17, an air tank 18, and a third one-way valve 19. The air pump 17, the air tank 18, and the third one-way valve 19 are connected in series in sequence. The third one-way valve 19 is connected to the gas nozzle on the nozzle 3 through a high-pressure pipe.

[0046] For a further optimized solution, sliding holes 20 are symmetrically provided on the nozzle mounting box 2. The sliding rods 7 pass through the sliding holes 20 and are in sliding cooperation with the nozzle mounting box 2.

[0047] The high-efficiency underwater concrete pier column demolition method based on the air-ring water jet includes the following steps:

[0048] S1: Before the underwater equipment is launched into the water, the high-pressure pipe, signal cable, hoisting cable, wire rope, and nozzle 3 are connected and fixed to the operating frame. A sufficiently long high-pressure pipe, signal cable, etc. are matched according to the operating water depth and integrated into the wiring harness;

[0049] S2: The approximate location of the construction site is located on the water through infrared scanning. The diver dives to the predetermined location with the jet pier removal work frame, fixes the work frame to both ends of the concrete pier to be worked on, and exits the water after confirming that the nozzle travel range can operate normally;

[0050] S3: Start cutting, the nozzle 3 starts cutting along the axial direction from the top of the pile, and the circumferential cutting operation is realized through the circumferential moving component;

[0051] S4: After the concrete is broken within the equipment’s position, move to the next working section;

[0052] S5: Repeat S3 until the concrete pier is demolished;

[0053] S6: Divers go into the water to dismantle the work frame, and use lifting equipment to lift the work frame back to the surface, and the demolition work is completed.

[0054] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An efficient underwater concrete pier demolition device based on a water jet with an air ring, characterized in that: Comprising: An operation rack, on which a hoisting rack (1) is installed, and the operation rack is detachably connected to a reinforced concrete pier column; A carrying mechanism, which includes a circumferential movement component, a linear movement component and a nozzle carrying box (2). The linear movement component is horizontally and fixedly connected to the operation rack, the nozzle carrying box (2) is slidably connected to the linear movement component, the circumferential movement component is fixedly connected to the nozzle carrying box (2), and the circumferential movement component is coaxially arranged with the reinforced concrete pier column, and the linear movement component is arranged parallel to the reinforced concrete pier column; A spray head (3), which is installed on the circumferential movement component, corresponding to the reinforced concrete pier column. A high-pressure water spray is provided at the central position of the spray head (3), and an annular gas spray port is provided on the spray head (3); A jet generating mechanism, which includes a high-pressure water jet generating component and an air jet generating component. The high-pressure water jet generating component and the air jet generating component are respectively connected to the high-pressure water spray port and the gas spray port through high-pressure pipes.

2. The underwater concrete pier column high-efficiency demolition device based on water jet with air ring according to claim 1 is characterized by: The operation rack includes two groups of transverse fixing frames (4) and one group of longitudinal fixing frames (5). The longitudinal fixing frame (5) is fixed between the two groups of transverse fixing frames (4). One group of the transverse fixing frames (4) is fixed at the top of the reinforced concrete pier column, and the hoisting rack (1) is fixed on the longitudinal fixing frame (5).

3. The underwater concrete pier column high-efficiency demolition device based on water jet with air ring according to claim 2 is characterized by: The linear movement component includes a linear track (6) and two groups of sliding rods (7). The linear track (6) and the sliding rods (7) are both fixed between the two transverse fixing frames (4). The linear track (6) is arranged between the two groups of sliding rods (7), and the linear track (6) is arranged parallel to the sliding rods (7). The nozzle carrying box (2) is slidably connected to the sliding rods (7). A retaining plate is fixedly connected to the top of the nozzle carrying box (2). The cross-sectional shape of the retaining plate is in the shape of a "匚". The linear track (6) passes through the retaining plate, and a transmission component is installed inside the retaining plate, and the transmission component is in transmission cooperation with the linear track (6).

4. The underwater concrete pier column high-efficiency demolition device based on water jet with air ring according to claim 1 is characterized by: The circumferential movement component includes an annular track (8) fixedly connected to the bottom of the nozzle carrying box (2). The annular track (8) is coaxially arranged with the reinforced concrete pier column. An annular groove (9) is provided on the annular track (8). A fixed beam (10) is slidably connected in the annular groove (9). An annular slide rail is provided on the bottom surface of the annular groove (9). A tooth groove is provided along the contour surface inside the annular slide rail. A transmission gear (11) is rotatably connected to the bottom of the fixed beam (10). The transmission gear (11) meshes with the tooth groove. The spray head (3) is fixedly connected to the fixed beam (10). A transmission motor is installed on the fixed beam (10), and the transmission motor is in transmission cooperation with the transmission gear (11).

5. The underwater concrete pier column high-efficiency demolition device based on water jet with air ring according to claim 1 is characterized by: The high-pressure water jet generating assembly comprises a water tank (12), a water pump (21), a pressure booster (13), a first one-way valve (14), an accumulator (15), and a second one-way valve (16); the water tank (12), the water pump (21), the pressure booster (13), the first one-way valve (14), the accumulator (15), and the second one-way valve (16) are sequentially connected in series; the second one-way valve (16) is connected to the high-pressure water nozzle on the nozzle (3) through the high-pressure pipe.

6. The underwater concrete pier column high-efficiency demolition device based on water jet with air ring according to claim 1 is characterized by: The air jet generating assembly comprises an air pump (17), an air box (18), and a third one-way valve (19); the air pump (17), the air box (18), and the third one-way valve (19) are connected in series in sequence; the third one-way valve (19) is connected to the gas nozzle on the nozzle (3) via the high-pressure pipe.

7. The underwater concrete pier column high-efficiency demolition device based on water jet with air ring according to claim 3 is characterized by: The nozzle carrying box (2) is symmetrically provided with sliding holes (20), and the sliding rod (7) passes through the sliding holes (20) and is slidably engaged with the nozzle carrying box (2).

8. An efficient demolition method for underwater concrete piers based on water jets with air rings, based on an efficient demolition device for underwater concrete piers based on water jets with air rings according to any one of claims 1 to 7, characterized in that: The steps include: S1: Before the underwater equipment is launched into the water, the high-pressure pipe, signal cable, hoisting cable, wire rope, and nozzle (3) are connected and fixed to the operation frame. The high-pressure pipe, signal cable, etc. of sufficient length are matched according to the operating water depth and integrated into the wiring harness; S2: The diver dives to the predetermined position with the jet-breaking pier work frame, fixes the work frame at both ends of the concrete pier to be worked on, and exits the water after confirming that the nozzle travel range can operate normally; S3: Cutting begins, the nozzle (3) starts cutting in the axial direction from the top of the pile, and the circumferential cutting operation is achieved through the circumferential moving assembly; S4: After the concrete is broken within the equipment’s position, move to the next working section; S5: Repeat S3 until the concrete pier is demolished; S6: Divers go into the water to dismantle the work frame, and use lifting equipment to lift the work frame back to the surface, and the demolition work is completed.

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