Hydraulic rock drill for underwater construction

Abstract

The invention relates to the technical field of rock drilling, in particular to a hydraulic rock drilling machine for underwater construction, and solves the problems that in the existing underwater rock drilling construction process, silt particles easily permeate into the rock drilling machine along with reciprocating motion of a crushing drill rod, sealing failure and hydraulic oil leakage are caused, sealing stability cannot be guaranteed through single gas injection isolation, and the rock drilling efficiency is high. The rock drilling machine comprises a rock drilling mechanism, the rock drilling mechanism comprises a ventilation driving assembly, and an air injection isolation rock drilling assembly is installed below the ventilation driving assembly; the ventilation driving assembly comprises a ventilation hood, a plurality of one-way ventilation units are installed on the outer side of the bottom end of the ventilation hood, and each one-way ventilation unit comprises a conical air guide sleeve. The rock drill is subjected to multi-channel gas injection isolation, permeation of silt particles can be effectively avoided, sealing stability is kept, and efficient and stable rock drilling operation is achieved through hydraulic and electric synchronous driving.

Description

Technical Field

[0001] The present invention relates to the technical field of rock drilling, in particular to a hydraulic rock drill for underwater construction. Background Art

[0002] Underwater rock drilling can be used to clear underwater rocks and reefs, providing convenience for subsequent underwater projects such as tunnel construction and port dredging. In some waters with high requirements for environmental protection, underwater rock drilling can adopt environmentally friendly construction methods to reduce pollution to the water body and damage to the surrounding environment. Compared with traditional manual or blasting methods, underwater rock drilling can adopt mechanized construction to improve construction efficiency and quality.

[0003] During the existing underwater rock drilling process, mud and sand particles easily penetrate into the rock drill with the reciprocating motion of the crushing drill, causing seal failure and hydraulic oil leakage. The use of single gas injection isolation cannot ensure the stability of the seal, and the use of hydraulic drive cannot maintain stable and efficient rock drilling; therefore, it does not meet the existing needs. In this regard, we propose a hydraulic rock drill for underwater construction. Summary of the Invention

[0004] The object of the present invention is to provide a hydraulic rock drill for underwater construction, so as to solve the problems raised in the above background technology that during the existing underwater rock drilling construction, mud and sand particles are easily infiltrated into the rock drill with the reciprocating motion of the crushing drill, causing seal failure and hydraulic oil leakage, the use of single air injection isolation cannot ensure the stability of the seal, and the use of hydraulic drive cannot maintain stable and efficient rock drilling.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A hydraulic rock drill for underwater construction includes a rock drilling mechanism, the rock drilling mechanism includes a ventilation drive assembly, and an air injection isolation rock drilling assembly is installed below the ventilation drive assembly; the ventilation drive assembly includes a ventilation hood, a plurality of one-way ventilation units are installed on the outer side of the bottom end of the ventilation hood, and the one-way ventilation unit includes a conical air guide sleeve, a limiting sleeve is installed on the upper end of the conical air guide sleeve, an elastic blocking block is slidably connected to the inner side of the conical air guide sleeve, a metal top seat is installed on the upper end surface of the elastic blocking block, an adjusting knob is slidably connected to the inner side of the upper end of the metal top seat, a first supporting spring is provided between the metal top seat and the adjusting knob, the upper end of the limiting sleeve is slidably connected to the blocking seat, and the upper end surface of the blocking seat is provided with a second supporting spring;

[0007] The gas injection isolation rock drilling assembly comprises a sealing sleeve, and the inner side of the sealing sleeve is provided with a first positive pressure chamber, a second positive pressure chamber and a third positive pressure chamber in sequence from top to bottom.

[0008] Preferably, an excavator body is installed on one side of the rock drilling mechanism, and the rock drilling mechanism also includes a protective conveying assembly arranged between the ventilation drive assembly and the air injection isolation rock drilling assembly, and a synchronous energy storage assembly is installed in the memory of the protective conveying assembly. The ventilation drive assembly also includes a drive motor fixedly connected to the inner side of the middle part of the ventilation hood, and a ventilation sealing sleeve is fixedly installed on the inner side of the upper end of the ventilation hood. The inner side of the ventilation sealing sleeve is connected to a second air injection pipe through a thread, and a ventilation gap is provided between the ventilation hood and the drive motor, and the second air injection pipe is connected to multiple conical air guide sleeves through the ventilation gap.

[0009] Preferably, the gas injection isolation rock drilling assembly also includes a crushing drill slidably connected to the sealing sleeve, a first isolation plate is installed at the upper end of the sealing sleeve, a drill body sealing ring is installed between the first positive pressure chamber and the second positive pressure chamber, the first positive pressure chamber and the second positive pressure chamber are connected through multiple air guide channels, and the multiple air guide channels are arranged circumferentially relative to the axis of the crushing drill.

[0010] Preferably, the gas injection isolation rock drilling assembly also includes a crushing drill slidably connected to the sealing sleeve, the upper end of the sealing sleeve is installed with a first isolation plate, a drill body sealing ring is installed between the first positive pressure chamber and the second positive pressure chamber, the bottom end of the sealing sleeve is installed with a positive pressure isolation cover, the inner side of the bottom end of the positive pressure isolation cover is installed with an air guide barb, the first positive pressure chamber and the second positive pressure chamber are connected through multiple air guide channels, and the multiple air guide channels are arranged circumferentially relative to the axis of the crushing drill.

[0011] Preferably, the synchronous energy storage assembly includes a piston sleeve, the upper end of the piston sleeve is fixedly installed with a first piston sealing ring, the outer side of the first piston sealing ring is installed with a second isolation plate, the first piston sealing ring is fixedly connected to the protective box body through the second isolation plate, one side of the piston sleeve is provided with two guide ends, the inner side of the bottom end of the piston sleeve is installed with a second piston sealing ring and a third piston sealing ring, the second piston sealing ring is located above the third piston sealing ring, and the inner sides of the first piston sealing ring, the second piston sealing ring and the third piston sealing ring are slidably connected with a piston rod, the upper end of the piston rod is fixedly installed with a transmission block, the outer side of the transmission block is movably installed with a conical rotating sleeve, the inner wall of the conical rotating sleeve is provided with multiple spiral grooves, the outer surface of the transmission block is fixedly provided with multiple guide columns, the outer side of the upper end of the conical rotating sleeve is rotatably connected with a positioning and retaining ring, the positioning and retaining ring is fixedly connected to the protective box body, and a guide rod is installed between the conical rotating sleeve and the transmission block.

[0012] Preferably, the bottom ends of the ventilation hood and the driving motor are fixedly connected to the protective box body, and the multiple one-way ventilation units are arranged in a circle relative to the axis of the ventilation hood. The output end of the driving motor passes through the protective box body and is fixedly connected to the conical rotating sleeve. The bottom end of the conical air guide sleeve is fixedly connected to the ventilation hood. The upper end of the conical air guide sleeve is threadedly connected to the limit sleeve. The bottom end of the adjusting knob passes through the blocking seat and the limit sleeve and is inserted into the inner side of the metal top seat. The adjusting knob is threadedly connected to the limit sleeve. The adjusting knob is connected to the blocking seat and the metal top seat through the second support spring and the first support spring respectively, and the metal top seat is fixedly connected to the elastic blocking block.

[0013] Preferably, the interior of the piston sleeve is connected to the first hydraulic oil delivery pipe and the second hydraulic oil delivery pipe through the guide end, the first air injection pipe is connected to the air guide pipe through a diverter box, the diverter box is connected to the first positive pressure chamber, the diverter box is connected to the third positive pressure chamber through the air guide pipe, the bottom end of the air guide pipe is connected to the positive pressure isolation cover by a threaded connection, and a one-way valve is provided on the inner side of the bottom end of the air guide pipe.

[0014] Preferably, the upper end of the sealing sleeve is fixedly connected to the protective box through the first isolation plate, the upper end of the crushing drill passes through the positive pressure isolation cover, the sealing sleeve and the drill body sealing ring and is inserted into the inner side of the middle part of the first isolation plate, the upper end of the crushing drill is slidably connected to the piston rod, the drill body sealing ring is fixedly connected to the sealing sleeve, and a sealing ring is provided between the drill body sealing ring and the crushing drill.

[0015] Preferably, the piston sleeve is fixedly connected to the second piston sealing ring and the third piston sealing ring, and sealing rings are provided between the first piston sealing ring, the second piston sealing ring and the third piston sealing ring and the piston rod, and the piston rod slides linearly back and forth along the axis of the piston sleeve.

[0016] Preferably, the conical rotating sleeve is rotatably connected to the protective box through a positioning and retaining ring, the bottom end of the guide rod is inserted into the inner side of the transmission block, the upper end of the guide rod is fixedly connected to the conical rotating sleeve, the multiple spiral grooves and guide columns are arranged in a circle relative to the axis of the guide rod, the number of the multiple spiral grooves and guide columns is the same, and one end of the guide column is inserted into the inner side of the spiral groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention injects air into the ventilation gap between the ventilation hood and the drive motor through the second air injection pipe through the ventilation sealing sleeve, thereby achieving a positive pressure state inside the ventilation hood, thereby being able to maintain stable heat dissipation of the drive motor in a closed state inside the ventilation hood. The blocking seat drives the second support spring to contract and separate from the limit sleeve. The second support spring and the first support spring respectively elastically support the blocking seat and the metal top seat, which can maintain the sealing stability of the ventilation hood and the elastic blocking block when the drive motor is not running, thereby preventing particles and water from entering the inside of the ventilation hood and affecting the service life of the drive motor.

[0019] 2. The present invention can effectively seal the crushing drill and the sealing sleeve in sequence during the positive pressure state through the third positive pressure chamber, the second positive pressure chamber and the first positive pressure chamber, while effectively maintaining the service life and sealing stability of the inner sealing ring of the drill body, and preventing water from seeping into the sealing sleeve and the crushing drill when the rock drilling mechanism enters water;

[0020] 3. The present invention reciprocates the hydraulic oil inside the piston sleeve through the first hydraulic oil delivery pipe, the second hydraulic oil delivery pipe and the two guide ends, so that the hydraulic oil can drive the piston rod to perform axial reciprocating movement, and the driving motor drives the conical rotating sleeve to rotate reciprocatingly, and then the conical rotating sleeve drives the transmission block to slide relative to the guide rod through the spiral groove and the guide column, so that the crushing drill can quickly and stably crush the construction surface, and realize that the transmission block can be electrically pressurized synchronously while the piston rod is hydraulically driven, thereby improving the crushing effect of the crushing drill. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0022] Figure 2 It is a structural schematic diagram of the rock drilling mechanism of the present invention;

[0023] Figure 3 It is a rear side view of the rock drilling mechanism of the present invention;

[0024] Figure 4 Schematic diagram of the explosion structure of the rock drilling mechanism of the present invention;

[0025] Figure 5 Schematic diagram of the cross-sectional structure of the rock drilling mechanism of the present invention;

[0026] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of the middle B area;

[0027] Figure 7 For the present invention Figure 4 Schematic diagram of the cross-sectional structure of area A in the middle;

[0028] Figure 8 Schematic diagram of the cross-sectional structure of the conical rotating sleeve of the present invention;

[0029] Figure 9 Schematic diagram of the cross-sectional structure of the piston sleeve of the present invention;

[0030] Figure 10 For the present invention Figure 5 Schematic diagram of the enlarged structure of the middle C region;

[0031] Figure 11 It is a schematic diagram of the cross-sectional structure of the sealing sleeve of the present invention.

[0032] In the figure: 1. Excavator body; 2. Rock drilling mechanism; 3. Protective conveying assembly; 301. Mounting side plate; 302. Protective box; 303. First hydraulic oil delivery pipe; 304. Second hydraulic oil delivery pipe; 305. First air injection pipe; 306. Diverter box; 307. Air guide pipe; 4. Ventilation drive assembly; 401. Ventilation hood; 402. One-way ventilation unit; 403. Ventilation sealing sleeve; 404. Second air injection pipe; 405. Drive motor; 406. Conical air guide sleeve; 407. Elastic blocking block; 408. Limiting sleeve; 409. Metal top seat; 410. First support spring; 411. Adjustment knob; 412. Blocking seat; 413. Second support spring; 5. Air injection Isolation drilling assembly; 501, crushing drill; 502, positive pressure isolation cover; 503, sealing sleeve; 504, first isolation plate; 505, air guide barb; 506, first positive pressure chamber; 507, second positive pressure chamber; 508, drill body sealing ring; 509, air guide channel; 510, third positive pressure chamber; 6, synchronous energy storage assembly; 601, piston sleeve; 602, guide end; 603, second isolation plate; 604, conical rotating sleeve; 605, positioning retaining ring; 606, spiral groove; 607, transmission block; 608, guide rod; 609, guide column; 610, piston rod; 611, first piston sealing ring; 612, second piston sealing ring; 613, third piston sealing ring. DETAILED DESCRIPTION

[0033] 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 only part of the embodiments of the present invention, rather than all the embodiments.

[0034] The drive motor 405 (model YVP225S-8) mentioned in the present invention can be purchased from the market or customized. Figures 1 to 4, the present invention provides an embodiment: a hydraulic rock drill for underwater construction, including an excavator body 1 and a rock drilling mechanism 2, one end of the excavator body 1 is equipped with the rock drilling mechanism 2, the rock drilling mechanism 2 includes a protective conveying assembly 3, the protective conveying assembly 3 includes a protective box 302, the front and rear end surfaces of the protective box 302 are fixedly equipped with mounting side plates 301, one side of the protective box 302 is fixedly equipped with a diverter box 306, one side of the diverter box 306 is fixedly equipped with an air guide pipe 307 and a first air injection pipe 305, the first air injection pipe 305 is located above the air guide pipe 307 ... An air injection pipe 305 is connected to the air guide pipe 307 through a diverter box 306. The bottom end of the air guide pipe 307 is connected to the positive pressure isolation cover 502 by a thread. A one-way valve is provided on the inner side of the bottom end of the air guide pipe 307. A first hydraulic oil delivery pipe 303 is installed behind the first air injection pipe 305. A second hydraulic oil delivery pipe 304 is installed behind the first hydraulic oil delivery pipe 303. Synchronous air injection operation is performed through the first air injection pipe 305 and the second air injection pipe 404, and the hydraulic oil circuit is used to reciprocate the hydraulic oil through the first hydraulic oil delivery pipe 303 and the second hydraulic oil delivery pipe 304.

[0035] See also Figures 3 to 6 The upper end of the protective conveying component 3 is equipped with a ventilation drive component 4, and the ventilation drive component 4 includes a ventilation hood 401, and a drive motor 405 is fixedly installed on the inner side of the middle part of the ventilation hood 401. The bottom ends of the ventilation hood 401 and the drive motor 405 are fixedly connected to the protective box 302, and a ventilation sealing sleeve 403 is fixedly installed on the inner side of the upper end of the ventilation hood 401. The inner side of the ventilation sealing sleeve 403 is connected with a second air injection pipe 404 by a thread. A ventilation gap is provided between the ventilation hood 401 and the drive motor 405, and the second air injection pipe 404 is connected with multiple conical air guide sleeves 406 through the ventilation gap. The second air injection pipe 404 injects air into the ventilation gap provided between the ventilation hood 401 and the drive motor 405 through the ventilation sealing sleeve 403, thereby realizing a positive pressure state inside the ventilation hood 401, thereby being able to maintain stable heat dissipation of the drive motor 405 in a closed state inside the ventilation hood 401.

[0036] See also Figure 4 and Figure 7, a plurality of one-way ventilation units 402 are installed on the outside of the bottom end of the ventilation hood 401, and the one-way ventilation unit 402 includes a conical air guide sleeve 406, the bottom end of the conical air guide sleeve 406 is fixedly connected to the ventilation hood 401, and a limiting sleeve 408 is installed on the upper end of the conical air guide sleeve 406, and the upper end of the conical air guide sleeve 406 is connected to the limiting sleeve 408 by a thread. The inner side of the conical air guide sleeve 406 is slidably connected with an elastic blocking block 407, and the upper end surface of the elastic blocking block 407 is installed with a metal top seat 409, and the inner side of the upper end of the metal top seat 409 is slidably connected with an adjusting knob 411, and the adjusting knob 411 is connected to the limiting sleeve 408 by a thread. By rotating the adjusting knob 411, the tightness of the first support spring 410 and the second support spring 413 can be adjusted, so that the one-way exhaust flow rate of the one-way ventilation unit 402 can be controlled;

[0037] A first supporting spring 410 is provided between the metal top seat 409 and the adjusting knob 411, and the upper end of the limiting sleeve 408 is slidably connected to the blocking seat 412. The bottom end of the adjusting knob 411 passes through the blocking seat 412 and the limiting sleeve 408 and is inserted into the inner side of the metal top seat 409. A second supporting spring 413 is provided on the upper end surface of the blocking seat 412. The adjusting knob 411 is connected to the blocking seat 412 and the metal top seat 409 respectively through the second supporting spring 413 and the first supporting spring 410. The metal top seat 409 is fixedly connected to the elastic blocking block 407, and the blocking seat 412 and the metal top seat 409 are elastically supported by the second supporting spring 413 and the first supporting spring 410 respectively, which can keep the sealing of the ventilation hood 401 stable when the drive motor 405 is not running, thereby preventing particles and water from entering the inner side of the ventilation hood 401 and affecting the life of the drive motor 405.

[0038] See also Figure 5 、 Figure 10 and Figure 11A synchronous energy storage assembly 6 is installed on the inner side of the protective conveying assembly 3, and a gas injection isolation rock drilling assembly 5 is installed on the bottom end of the synchronous energy storage assembly 6. The gas injection isolation rock drilling assembly 5 includes a sealing sleeve 503, a first positive pressure chamber 506 is provided on the inner side of the middle part of the sealing sleeve 503, and a second positive pressure chamber 507 is provided on the inner side of the bottom end of the sealing sleeve 503. The first positive pressure chamber 506 and the second positive pressure chamber 507 are connected through a plurality of air guide channels 509. The plurality of air guide channels 509 are arranged circumferentially relative to the axis of the crushing drill 501. The bottom end of the sealing sleeve 503 A positive pressure isolation cover 502 is installed, and an air guide barb 505 is installed on the inner side of the bottom end of the positive pressure isolation cover 502. A third positive pressure chamber 510 is provided between the positive pressure isolation cover 502 and the air guide barb 505. The diverter box 306 is connected to the first positive pressure chamber 506, and the diverter box 306 is connected to the third positive pressure chamber 510 via an air guide tube 307. The third positive pressure chamber 510, the second positive pressure chamber 507 and the first positive pressure chamber 506 can sequentially effectively seal the breaker drill 501 and the sealing sleeve 503 during the positive pressure state.

[0039] The inner side of the sealing sleeve 503 is slidably connected to the crushing drill 501, and a first isolation plate 504 is installed on the upper end of the sealing sleeve 503. A drill body sealing ring 508 is installed between the first positive pressure chamber 506 and the second positive pressure chamber 507. The drill body sealing ring 508 is fixedly connected to the sealing sleeve 503, and a sealing ring is provided between the drill body sealing ring 508 and the crushing drill 501. The upper end of the sealing sleeve 503 is fixedly connected to the protective box 302 through the first isolation plate 504. The upper end of the crushing drill 501 passes through the positive pressure isolation cover 502, the sealing sleeve 503 and the drill body sealing ring 508 and is plugged into the inner side of the middle part of the first isolation plate 504, which effectively maintains the service life and sealing stability of the inner sealing ring of the drill body sealing ring 508 during the gas injection process, and avoids the situation where water seeps into between the sealing sleeve 503 and the crushing drill 501 when the rock drilling mechanism 2 enters the water.

[0040] See also Figures 4 to 9 The synchronous energy storage assembly 6 includes a piston sleeve 601, a first piston sealing ring 611 is fixedly installed on the upper end of the piston sleeve 601, a second isolation plate 603 is installed on the outer side of the first piston sealing ring 611, the first piston sealing ring 611 is fixedly connected to the protective box 302 through the second isolation plate 603, and two guide ends 602 are provided on one side of the piston sleeve 601. The interior of the piston sleeve 601 is connected to the first hydraulic oil delivery pipe 303 and the second hydraulic oil delivery pipe 304 through the guide ends 602, and the hydraulic oil is reciprocated in the interior of the piston sleeve 601 through the first hydraulic oil delivery pipe 303, the second hydraulic oil delivery pipe 304 and the two guide ends 602;

[0041] A second piston sealing ring 612 and a third piston sealing ring 613 are installed on the inner side of the bottom end of the piston sleeve 601. The second piston sealing ring 612 is located above the third piston sealing ring 613. A piston rod 610 is slidably connected to the inner sides of the first piston sealing ring 611, the second piston sealing ring 612 and the third piston sealing ring 613. The upper end of the crushing drill 501 is slidably connected to the piston rod 610. The piston sleeve 601 is fixedly connected to the second piston sealing ring 612 and the third piston sealing ring 613. Sealing rings are provided between the first piston sealing ring 611, the second piston sealing ring 612 and the third piston sealing ring 613 and the piston rod 610. The piston rod 610 slides linearly back and forth along the axis of the piston sleeve 601. The hydraulic oil can drive the piston rod 610 to perform axial reciprocating motion under the sealing action of the sealing rings inside the first piston sealing ring 611, the second piston sealing ring 612 and the third piston sealing ring 613.

[0042] A transmission block 607 is fixedly mounted on the upper end of the piston rod 610, and a conical rotating sleeve 604 is movably mounted on the outer side of the transmission block 607. Multiple one-way ventilation units 402 are arranged circumferentially relative to the axis of the ventilation hood 401. The output end of the drive motor 405 passes through the protective housing 302 and is fixedly connected to the conical rotating sleeve 604. The inner wall of the conical rotating sleeve 604 is provided with multiple spiral grooves 606. The outer surface of the transmission block 607 is fixedly provided with multiple guide columns 609. The outer side of the upper end of the conical rotating sleeve 604 is rotatably connected to a positioning retaining ring 605. The positioning retaining ring 605 is fixedly connected to the protective housing 302, so that the drive motor 405 drives the conical rotating sleeve 604 to rotate back and forth under the support of the protective housing 302.

[0043] A guide rod 608 is installed between the conical rotating sleeve 604 and the transmission block 607. The conical rotating sleeve 604 is rotatably connected to the protective box 302 through a positioning and retaining ring 605. The bottom end of the guide rod 608 is inserted into the inner side of the transmission block 607. The upper end of the guide rod 608 is fixedly connected to the conical rotating sleeve 604. Multiple spiral grooves 606 and guide columns 609 are arranged in a circle relative to the axis of the guide rod 608. The number of multiple spiral grooves 606 and guide columns 609 is the same. One end of the guide column 609 is inserted into the inner side of the spiral groove 606. The conical rotating sleeve 604 drives the transmission block 607 to slide relative to the guide rod 608 through the spiral groove 606 and the guide column 609, and then the transmission block 607 drives the piston rod 610 to perform axial reciprocating punching on the crushing drill 501, so that the crushing drill 501 can perform fast and stable crushing operations on the construction surface.

[0044] In summary, when using a rock drill for underwater construction and crushing operations, the two mounting side plates 301 in the rock drilling mechanism 2 are assembled with the hydraulic arm of the excavator body 1 via pins, the power is turned on, the first hydraulic oil delivery pipe 303 and the second hydraulic oil delivery pipe 304 are connected to the hydraulic oil circuit of the excavator body 1, and the first air injection pipe 305 and the second air injection pipe 404 are connected to the air pump provided on the excavator body 1. The air pump is used to perform synchronous air injection operations through the first air injection pipe 305 and the second air injection pipe 404.

[0045] Specifically, the second air injection pipe 404 injects air into the ventilation gap between the ventilation hood 401 and the drive motor 405 through the ventilation sealing sleeve 403, thereby realizing a positive pressure state inside the ventilation hood 401, thereby being able to maintain stable heat dissipation of the drive motor 405 in a closed state inside the ventilation hood 401. A plurality of circumferentially arranged one-way ventilation units 402 are installed on the outside of the bottom end of the ventilation hood 401, wherein the adjustment knob 411 is connected to the blocking seat 412 and the metal top seat 409 respectively through the second support spring 413 and the first support spring 410, thereby dissipating heat to the drive motor 405. When the airflow passes through the multiple conical air guide sleeves 406, the elastic blocking block 407 and the metal top seat 409 move upward and separate from the conical air guide sleeve 406, and the blocking seat 412 drives the second support spring 413 to contract and separate from the limiting sleeve 408. The second support spring 413 and the first support spring 410 respectively elastically support the blocking seat 412 and the metal top seat 409, which can keep the sealing of the ventilation hood 401 stable when the drive motor 405 is not running, thereby preventing particles and water from entering the inner side of the ventilation hood 401 and affecting the service life of the drive motor 405.

[0046] The first gas injection pipe 305 can synchronously inject gas into the first positive pressure chamber 506 and the third positive pressure chamber 510 through the diverter box 306 and the gas guide pipe 307, and the first positive pressure chamber 506 and the second positive pressure chamber 507 are connected through multiple gas guide channels 509. Therefore, the third positive pressure chamber 510, the second positive pressure chamber 507 and the first positive pressure chamber 506 can sequentially effectively seal the crushing drill 501 and the sealing sleeve 503 during the positive pressure state, while effectively maintaining the service life and sealing stability of the inner sealing ring of the drill body sealing ring 508, thereby preventing the rock drilling mechanism 2 from entering the water and causing water to seep between the sealing sleeve 503 and the crushing drill 501;

[0047] The excavator body 1 drives the rock drilling mechanism 2 deep into the water through the hydraulic arm and makes the bottom end of the breaker drill 501 contact the construction surface. Then, the hydraulic oil circuit is used to reciprocate the hydraulic oil inside the piston sleeve 601 through the first hydraulic oil delivery pipe 303, the second hydraulic oil delivery pipe 304 and the two guide ends 602. Then, the hydraulic oil can drive the piston rod 610 to perform axial reciprocating motion under the sealing effect of the inner sealing rings of the first piston sealing ring 611, the second piston sealing ring 612 and the third piston sealing ring 613;

[0048] At the same time, the drive motor 405 is started, so that the drive motor 405 drives the conical rotating sleeve 604 to rotate back and forth under the support of the protective box 302, and then the conical rotating sleeve 604 drives the transmission block 607 to slide relative to the guide rod 608 through the spiral groove 606 and the guide column 609, and then the transmission block 607 drives the piston rod 610 to perform axial reciprocating punching on the crushing drill 501, so that the crushing drill 501 can quickly and stably crush the construction surface, and realize that the transmission block 607 can simultaneously perform electric pressurization while the piston rod 610 is hydraulically driven, thereby improving the crushing effect of the crushing drill 501.

[0049] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A hydraulic rock drill for underwater construction, comprising a rock drilling mechanism (2), characterized in that: The rock drilling mechanism (2) comprises a ventilation drive assembly (4), and an air injection isolation rock drilling assembly (5) is installed below the ventilation drive assembly (4); the ventilation drive assembly (4) comprises a ventilation hood (401), and a plurality of one-way ventilation units (402) are installed on the outer side of the bottom end of the ventilation hood (401), and the one-way ventilation units (402) comprise a conical air guide sleeve (406), and a limiting sleeve (408) is installed on the upper end of the conical air guide sleeve (406), and an elastic blocking block (407) is slidably connected to the inner side of the conical air guide sleeve (406), and a metal top is installed on the upper end surface of the elastic blocking block (407). The metal top seat (409) is slidably connected to the inner side of the upper end of the metal top seat (409) with an adjusting knob (411), a first supporting spring (410) is provided between the metal top seat (409) and the adjusting knob (411), the upper end of the limiting sleeve (408) is slidably connected to the blocking seat (412), and the upper end surface of the blocking seat (412) is provided with a second supporting spring (413); the gas injection isolation rock drilling assembly (5) includes a sealing sleeve (503), and the inner side of the sealing sleeve (503) is provided with a first positive pressure chamber (506), a second positive pressure chamber (507) and a third positive pressure chamber (510) in sequence from top to bottom.

2. The hydraulic rock drill for underwater construction according to claim 1, characterized in that: An excavator body (1) is installed on one side of the rock drilling mechanism (2). The rock drilling mechanism (2) also includes a protective conveying assembly (3) arranged between a ventilation drive assembly (4) and an air injection isolation rock drilling assembly (5). A synchronous energy storage assembly (6) is installed in the memory of the protective conveying assembly (3). The ventilation drive assembly (4) also includes a drive motor (405) fixedly connected to the inner side of the middle part of the ventilation hood (401). A ventilation sealing sleeve (403) is fixedly installed on the inner side of the upper end of the ventilation hood (401). The inner side of the ventilation sealing sleeve (403) is connected to a second air injection pipe (404) through a thread. A ventilation gap is provided between the ventilation hood (401) and the drive motor (405). The second air injection pipe (404) is connected to a plurality of conical air guide sleeves (406) through the ventilation gap.

3. The hydraulic rock drill for underwater construction according to claim 2, characterized in that: The gas injection isolation rock drilling assembly (5) also includes a crushing drill (501) slidably connected to a sealing sleeve (503), a first isolation plate (504) is installed at the upper end of the sealing sleeve (503), a drill body sealing ring (508) is installed between the first positive pressure chamber (506) and the second positive pressure chamber (507), a positive pressure isolation cover (502) is installed at the bottom end of the sealing sleeve (503), and a gas guide barb (505) is installed on the inner side of the bottom end of the positive pressure isolation cover (502), the first positive pressure chamber (506) and the second positive pressure chamber (507) are connected through a plurality of gas guide channels (509), and the plurality of gas guide channels (509) are arranged in a circle relative to the axis of the crushing drill (501).

4. The hydraulic rock drill for underwater construction according to claim 3, characterized in that: The protective conveying assembly (3) comprises a protective box (302), the front and rear end surfaces of the protective box (302) are both fixedly mounted with mounting side plates (301), a diverter box (306) is fixedly mounted on one side of the protective box (302), an air guide pipe (307) and a first air injection pipe (305) are fixedly mounted on one side of the diverter box (306), the first air injection pipe (305) is located above the air guide pipe (307), a first hydraulic oil delivery pipe (303) is mounted behind the first air injection pipe (305), and a second hydraulic oil delivery pipe (304) is mounted behind the first hydraulic oil delivery pipe (303).

5. The hydraulic rock drill for underwater construction according to claim 4, characterized in that: The synchronous energy storage assembly (6) includes a piston sleeve (601), a first piston sealing ring (611) is fixedly installed on the upper end of the piston sleeve (601), a second isolation plate (603) is installed on the outer side of the first piston sealing ring (611), the first piston sealing ring (611) is fixedly connected to the protective box (302) through the second isolation plate (603), one side of the piston sleeve (601) is provided with two guide ends (602), the inner side of the bottom end of the piston sleeve (601) is installed with a second piston sealing ring (612) and a third piston sealing ring (613), the second piston sealing ring (612) is located above the third piston sealing ring (613), the first piston sealing ring (611), the second piston sealing ring (612) and the third piston sealing ring (613) are fixedly connected to the protective box (302) through the second isolation plate (603), and the first piston sealing ring (611) and the second piston sealing ring (612) are fixedly connected to the protective box (302) through the second isolation plate (603). A piston rod (610) is slidably connected to the inner side of the plug sealing ring (612) and the third piston sealing ring (613), a transmission block (607) is fixedly installed on the upper end of the piston rod (610), a conical rotating sleeve (604) is movably installed on the outer side of the transmission block (607), the inner wall of the conical rotating sleeve (604) is provided with a plurality of spiral grooves (606), the outer surface of the transmission block (607) is fixedly provided with a plurality of guide columns (609), the outer side of the upper end of the conical rotating sleeve (604) is rotatably connected to a positioning retaining ring (605), the positioning retaining ring (605) is fixedly connected to the protective box (302), and a guide rod (608) is installed between the conical rotating sleeve (604) and the transmission block (607).

6. The hydraulic rock drill for underwater construction according to claim 5, characterized in that: The bottom ends of the ventilation hood (401) and the driving motor (405) are both fixedly connected to the protective box (302); the plurality of one-way ventilation units (402) are arranged in a circumference relative to the axis of the ventilation hood (401); the output end of the driving motor (405) passes through the protective box (302) and is fixedly connected to the conical rotating sleeve (604); the bottom end of the conical air guide sleeve (406) is fixedly connected to the ventilation hood (401); the upper end of the conical air guide sleeve (406) is fixedly connected to the limiting sleeve (408); The bottom end of the adjusting knob (411) passes through the blocking seat (412) and the limiting sleeve (408) and is inserted into the inner side of the metal top seat (409) through a threaded connection. The adjusting knob (411) is connected to the limiting sleeve (408) through a threaded connection. The adjusting knob (411) is connected to the blocking seat (412) and the metal top seat (409) through a second supporting spring (413) and a first supporting spring (410) respectively. The metal top seat (409) is fixedly connected to the elastic blocking block (407).

7. The hydraulic rock drill for underwater construction according to claim 6, characterized in that: The interior of the piston sleeve (601) is connected to the first hydraulic oil delivery pipe (303) and the second hydraulic oil delivery pipe (304) through the guide end (602); the first air injection pipe (305) is connected to the air guide pipe (307) through the diverter box (306); the diverter box (306) is connected to the first positive pressure chamber (506); the diverter box (306) is connected to the third positive pressure chamber (510) through the air guide pipe (307); the bottom end of the air guide pipe (307) is connected to the positive pressure isolation cover (502) through a thread; and a one-way valve is provided on the inner side of the bottom end of the air guide pipe (307).

8. The hydraulic rock drill for underwater construction according to claim 7, characterized in that: The upper end of the sealing sleeve (503) is fixedly connected to the protective box (302) through the first isolation plate (504); the upper end of the crushing drill (501) passes through the positive pressure isolation cover (502), the sealing sleeve (503) and the drill body sealing ring (508) and is plugged into the inner side of the middle part of the first isolation plate (504); the upper end of the crushing drill (501) is slidably connected to the piston rod (610); the drill body sealing ring (508) is fixedly connected to the sealing sleeve (503); and a sealing ring is provided between the drill body sealing ring (508) and the crushing drill (501).

9. The hydraulic rock drill for underwater construction according to claim 8, characterized in that: The piston sleeve (601) is fixedly connected to the second piston sealing ring (612) and the third piston sealing ring (613). Sealing rings are provided between the first piston sealing ring (611), the second piston sealing ring (612), the third piston sealing ring (613) and the piston rod (610). The piston rod (610) slides linearly back and forth along the axis of the piston sleeve (601).

10. The hydraulic rock drill for underwater construction according to claim 9, characterized in that: The conical rotating sleeve (604) is rotatably connected to the protective box (302) via a positioning retaining ring (605); the bottom end of the guide rod (608) is plugged into the inner side of the transmission block (607); the upper end of the guide rod (608) is fixedly connected to the conical rotating sleeve (604); the plurality of spiral grooves (606) and guide posts (609) are arranged in a circle relative to the axis of the guide rod (608); the number of the plurality of spiral grooves (606) and guide posts (609) is the same; one end of the guide post (609) is plugged into the inner side of the spiral groove (606).

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