A hydraulic rock drill for underwater construction

Abstract

This invention relates to the field of rock drilling technology, specifically to a hydraulic rock drill for underwater construction. It solves the problems of existing underwater rock drilling methods where mud and sand particles easily seep into the drill during the reciprocating motion of the rock drill bit, causing seal failure and hydraulic oil leakage. Single-stage air injection isolation cannot guarantee stable sealing, and hydraulic drive cannot maintain stable and efficient rock drilling. The invention includes a rock drilling mechanism comprising a ventilation drive assembly, below which is an air injection isolation rock drilling assembly. The ventilation drive assembly includes a ventilation hood, and multiple unidirectional ventilation units are installed on the outer side of the bottom of the ventilation hood. Each unidirectional ventilation unit includes a conical air guide sleeve. This invention effectively prevents the seepage of mud and sand particles and maintains stable sealing by implementing multi-channel air injection isolation in the rock drill. Furthermore, the synchronous drive of hydraulic and electric drives achieves efficient and stable rock drilling operations.

Description

Technical Field

[0001] This invention relates to the field of rock drilling technology, specifically to a hydraulic rock drill for underwater construction. Background Technology

[0002] Underwater rock drilling can remove underwater rocks and reefs, facilitating subsequent underwater engineering projects such as tunnel construction and port dredging. In some waters with high environmental protection requirements, underwater rock drilling can adopt environmentally friendly construction methods, reducing water pollution and damage to the surrounding environment. Compared with traditional manual or blasting methods, underwater rock drilling can adopt mechanized construction, improving construction efficiency and quality.

[0003] In current underwater rock drilling operations, mud and sand particles easily seep into the rock drill as the rock drill reciprocates, causing seal failure and hydraulic oil leakage. Using a single air injection isolation method cannot guarantee the stability of the seal, and hydraulic drive cannot maintain stable and efficient rock drilling. Therefore, it does not meet the existing requirements. To address this, we propose a hydraulic rock drill for underwater construction. Summary of the Invention

[0004] The purpose of this invention is to provide a hydraulic rock drill for underwater construction, in order to solve the problems mentioned in the background art, in which mud and sand particles easily seep into the rock drill during the reciprocating motion of the crusher, causing sealing failure and hydraulic oil leakage. Using a single air injection isolation method cannot guarantee the stability of the seal, and hydraulic drive cannot maintain stable and efficient rock drilling.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[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, and multiple one-way ventilation units are installed on the outer side of the bottom end of the ventilation hood. Each one-way ventilation unit includes a conical air guide sleeve, a limit sleeve is installed at the upper end of the conical air guide sleeve, an elastic sealing block is slidably connected to the inner side of the conical air guide sleeve, a metal top seat is installed on the upper end face of the elastic sealing block, an adjustment knob is slidably connected to the inner side of the upper end of the metal top seat, a first support spring is provided between the metal top seat and the adjustment knob, a sealing seat is slidably connected to the upper end of the limit sleeve, and a second support spring is provided on the upper end face of the sealing seat.

[0007] The gas-injection isolation rock drilling assembly includes 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 from top to bottom.

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

[0009] Preferably, the gas-injected isolation rock drilling assembly further includes a breaking drill bit that is slidably connected to the sealing sleeve. A first isolation plate is installed at the upper end of the sealing sleeve. A drill bit 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 breaking drill bit.

[0010] Preferably, the gas-injected isolation rock drilling assembly further includes a breaking drill bit slidably connected to the sealing sleeve. A first isolation plate is installed at the upper end of the sealing sleeve. A drill bit sealing ring is installed between the first positive pressure chamber and the second positive pressure chamber. A positive pressure isolation cover is installed at the bottom end of the sealing sleeve. A gas guide barb is installed on the inner side of the bottom end of the positive pressure isolation cover. The first positive pressure chamber and the second positive pressure chamber are connected through multiple gas guide channels. The multiple gas guide channels are arranged circumferentially relative to the axis of the breaking drill bit.

[0011] Preferably, the synchronous energy storage assembly includes a piston sleeve. A first piston sealing ring is fixedly installed at the upper end of the piston sleeve. A second isolation plate is installed on the outer side of the first piston sealing ring. The first piston sealing ring is fixedly connected to the protective housing through the second isolation plate. Two flow guide ends are provided on one side of the piston sleeve. A second piston sealing ring and a third piston sealing ring are installed on the inner side of the bottom end of the piston sleeve. The second piston sealing ring is located above the third piston sealing ring. A piston rod is slidably connected to the inner side of the first, second, and third piston sealing rings. A transmission block is fixedly installed at the upper end of the piston rod. A conical rotating sleeve is movably installed on the outer side of the transmission block. The inner wall of the conical rotating sleeve is provided with multiple spiral grooves. Multiple guide posts are fixedly provided on the outer surface of the transmission block. A positioning retaining ring is rotatably connected to the outer side of the upper end of the conical rotating sleeve. The positioning retaining ring is fixedly connected to the protective housing. 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 drive motor are fixedly connected to the protective housing. The plurality of unidirectional ventilation units are arranged circumferentially relative to the axis of the ventilation hood. The output end of the drive motor passes through the protective housing 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 limiting sleeve. The bottom end of the adjusting knob passes through the sealing seat and the limiting sleeve and is inserted into the inner side of the metal top seat. The adjusting knob is threadedly connected to the limiting sleeve. The adjusting knob is connected to the sealing seat and the metal top seat respectively by the second support spring and the first support spring. The metal top seat is fixedly connected to the elastic sealing block.

[0013] Preferably, the interior of the piston sleeve is connected to both the first hydraulic oil delivery pipe and the second hydraulic oil delivery pipe through a guide end. The first air injection pipe and the air guide pipe are connected through a flow divider box. The flow divider box is connected to the first positive pressure chamber. The flow divider box is connected to the third positive pressure chamber through an air guide pipe. The bottom end of the air guide pipe is connected to the positive pressure isolation cover by a thread. 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 rod passes through the positive pressure isolation cover, the sealing sleeve and the rod body sealing ring and is inserted into the inner side of the middle of the first isolation plate, the upper end of the crushing rod is slidably connected to the piston rod, the rod body sealing ring is fixedly connected to the sealing sleeve, and a sealing ring is provided between the rod body sealing ring and the crushing rod.

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

[0016] Preferably, the conical rotating sleeve and the protective housing are rotatably connected by a positioning 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, and the plurality of spiral grooves and guide posts are arranged in a circle relative to the axis of the guide rod. The number of the plurality of spiral grooves and guide posts is the same, and one end of the guide post is inserted into the inner side of the spiral groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In this invention, the second air injection pipe injects air into the ventilation gap between the ventilation hood and the drive motor through the ventilation sealing sleeve, thereby achieving a positive pressure state inside the ventilation hood. This ensures stable heat dissipation for the drive motor, which is in a closed state inside the ventilation hood. The sealing seat drives the second support spring to retract and separate from the limiting sleeve. The second support spring and the first support spring provide elastic support for the sealing seat and the metal top seat, respectively. This ensures that the sealing seat and the elastic sealing block maintain the sealing stability of the ventilation hood when the drive motor is not running, preventing particles and water from entering the inside of the ventilation hood and affecting the lifespan of the drive motor.

[0019] 2. The present invention can effectively seal the gap between the breaking drill bit 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. At the same time, it can effectively maintain the service life and sealing stability of the inner sealing ring of the drill bit body, and prevent water from seeping into the gap between the sealing sleeve and the breaking drill bit when the rock drilling mechanism enters the water.

[0020] 3. This invention reciprocates by supplying hydraulic oil to the inside of the piston sleeve through a first hydraulic oil delivery pipe, a second hydraulic oil delivery pipe, and two guide ends. The hydraulic oil then drives the piston rod to perform axial reciprocating motion, which in turn drives the conical rotating sleeve to rotate reciprocally. The conical rotating sleeve then drives the transmission block to slide relative to the guide rod through the spiral groove and guide post. This allows the crushing chisel to perform rapid and stable crushing operations on the construction surface. Simultaneously, the transmission block can be electrically pressurized while the piston rod is hydraulically driven, thereby improving the crushing effect of the crushing chisel. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

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

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

[0024] Figure 4 This is a schematic diagram of the exploded structure of the rock drilling mechanism of the present invention;

[0025] Figure 5 This is a schematic cross-sectional view of the rock drilling mechanism of the present invention;

[0026] Figure 6 For the present invention Figure 5 A magnified structural diagram of region B in the middle;

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

[0028] Figure 8 This is a schematic cross-sectional view of the conical rotating sleeve of the present invention;

[0029] Figure 9 This is a cross-sectional structural diagram of the piston sleeve of the present invention;

[0030] Figure 10 For the present invention Figure 5 A magnified structural diagram of region C in the middle;

[0031] Figure 11 This is a cross-sectional structural diagram of the sealing sleeve of the present invention.

[0032] In the diagram: 1. Excavator body; 2. Rock drilling mechanism; 3. Protective conveying assembly; 301. Mounting side plate; 302. Protective housing; 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 sealing block; 408. Limiting sleeve; 409. Metal top seat; 410. First support spring; 411. Adjustment knob; 412. Sealing seat; 413. Second support spring; 5. Air injection. 501. Rock drilling assembly; 502. Breaking drill bit; 503. Positive pressure isolation cover; 504. Sealing sleeve; 505. First isolation plate; 506. Air guide barb; 507. First positive pressure chamber; 508. Drill bit sealing ring; 509. Air guide channel; 510. Third positive pressure chamber; 6. Synchronous energy storage assembly; 601. Piston sleeve; 602. Flow 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 Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] The drive motor 405 (model YVP225S-8) mentioned in this invention can be obtained from the market or through private customization. Please refer to [link / reference]. Figures 1 to 4This invention provides an embodiment of a hydraulic rock drill for underwater construction, comprising an excavator body 1 and a rock drilling mechanism 2. The rock drilling mechanism 2 is mounted on one end of the excavator body 1. The rock drilling mechanism 2 includes a protective conveying assembly 3, which includes a protective housing 302. Side plates 301 are fixedly mounted on both the front and rear end faces of the protective housing 302. A diversion box 306 is fixedly mounted on one side of the protective housing 302. An air guide pipe 307 and a first air injection pipe 305 are fixedly mounted on one side of the diversion box 306. The first air injection pipe 305 is located above the air guide pipe 307. An air injection pipe 305 and an air guide pipe 307 are connected through a distribution 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, and a second hydraulic oil delivery pipe 304 is installed behind the first hydraulic oil delivery pipe 303. The first air injection pipe 305 and the second air injection pipe 304 are used for synchronous air injection operation. The hydraulic oil is reciprocated through the first hydraulic oil delivery pipe 303 and the second hydraulic oil delivery pipe 304 using the hydraulic oil circuit.

[0035] Please see Figures 3 to 6 The upper end of the protective conveying assembly 3 is equipped with a ventilation drive assembly 4, which includes a ventilation hood 401. 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 housing 302. A ventilation sealing sleeve 403 is fixedly installed on the inner side of the upper end of the ventilation hood 401. A second air injection pipe 404 is threadedly connected to the inner side of the ventilation sealing sleeve 403. A ventilation gap is provided between the ventilation hood 401 and the drive motor 405. The second air injection pipe 404 is connected to multiple conical air guide sleeves 406 through the ventilation gap. 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 to achieve a positive pressure state inside the ventilation hood 401, thereby maintaining stable heat dissipation of the drive motor 405, which is in a closed state inside the ventilation hood 401.

[0036] Please see Figure 4 and Figure 7Multiple one-way ventilation units 402 are installed on the outer side of the bottom end of the ventilation hood 401. Each 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. A limit sleeve 408 is installed on the upper end of the conical air guide sleeve 406. The upper end of the conical air guide sleeve 406 is connected to the limit sleeve 408 by a thread. An elastic sealing block 407 is slidably connected to the inner side of the conical air guide sleeve 406. A metal top seat 409 is installed on the upper end face of the elastic sealing block 407. An adjustment knob 411 is slidably connected to the inner side of the upper end of the metal top seat 409. The adjustment knob 411 is connected to the limit sleeve 408 by a thread. By rotating the adjustment knob 411, the tightness of the first support spring 410 and the second support spring 413 can be adjusted, thereby realizing the control of the one-way exhaust flow of the one-way ventilation unit 402.

[0037] A first support 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 sealing seat 412. The bottom end of the adjusting knob 411 passes through the sealing seat 412 and the limiting sleeve 408 and is inserted into the inner side of the metal top seat 409. A second support spring 413 is provided on the upper end face of the sealing seat 412. The adjusting knob 411 is connected to the sealing seat 412 and the metal top seat 409 respectively through the second support spring 413 and the first support spring 410. The metal top seat 409 is fixedly connected to the elastic sealing block 407. The second support spring 413 and the first support spring 410 provide elastic support for the sealing seat 412 and the metal top seat 409 respectively, which can maintain the sealing stability of the ventilation cover 401 when the driving motor 405 is not running, and prevent particles and water from entering the inner side of the ventilation cover 401 and affecting the life of the driving motor 405.

[0038] Please see Figure 5 , Figure 10 and Figure 11A synchronous energy storage component 6 is installed inside the protective conveying component 3. An air-injection isolation rock drilling component 5 is installed at the bottom of the synchronous energy storage component 6. The air-injection isolation rock drilling component 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 multiple air guide channels 509. The multiple air guide channels 509 are arranged circumferentially relative to the axis of the breaking drill bit 501. The bottom end of the sealing sleeve 503... A positive pressure isolation cover 502 is installed, and an air guide hook 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 hook 505. A diversion box 306 is connected to the first positive pressure chamber 506. The diversion box 306 and the third positive pressure chamber 510 are connected through an air guide pipe 307. Through the third positive pressure chamber 510, the second positive pressure chamber 507 and the first positive pressure chamber 506, the crushing rod 501 and the sealing sleeve 503 can be effectively sealed in sequence during the positive pressure state.

[0039] The inner side of the sealing sleeve 503 is slidably connected to the breaking drill bit 501. The upper end of the sealing sleeve 503 is equipped with a first isolation plate 504. 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. A sealing ring is provided between the drill body sealing ring 508 and the breaking drill bit 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 breaking drill bit 501 passes through the positive pressure isolation cover 502, the sealing sleeve 503 and the drill body sealing ring 508 and is inserted into the inner side of the middle of the first isolation plate 504. During the air injection process, the service life and sealing stability of the inner sealing ring of the drill body sealing ring 508 are effectively maintained, and the situation where water seeps into the rock drilling mechanism 2 from between the sealing sleeve 503 and the breaking drill bit 501 is avoided.

[0040] Please see 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 housing 302 through the second isolation plate 603. 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. The hydraulic oil is reciprocated to 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 side 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 chisel 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. A sealing ring is 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. Hydraulic oil can drive the piston rod 610 to perform axial reciprocating motion under the sealing action 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.

[0042] 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. Multiple unidirectional ventilation units 402 are arranged in a circle 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. Multiple guide posts 609 are fixedly provided on the outer surface of the transmission block 607. A positioning retaining ring 605 is rotatably connected to the outer side of the upper end of the conical rotating sleeve 604. 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 reciprocate 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 and the protective box 302 are rotatably connected by a positioning retaining ring 605. The bottom end of the guide rod 608 is inserted into the inner side of the transmission block 607, and the upper end of the guide rod 608 is fixedly connected to the conical rotating sleeve 604. Multiple spiral grooves 606 and guide posts 609 are arranged circumferentially relative to the axis of the guide rod 608. The number of spiral grooves 606 and guide posts 609 is the same. One end of the guide post 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 grooves 606 and guide posts 609. Then, the transmission block 607 drives the piston rod 610 to perform axial reciprocating pressing on the crushing rod 501, so that the crushing rod 501 can perform rapid and stable crushing operation on the construction surface.

[0044] In summary, when using a rock drill for underwater construction and breaking 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, and 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. At the same time, the first air injection pipe 305 and the second air injection pipe 404 are connected to the air pump installed on the excavator body 1. The air pump is used to perform synchronous air injection 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, achieving a positive pressure state inside the ventilation hood 401. This ensures stable heat dissipation for the drive motor 405, which is in a closed state inside the ventilation hood 401. Multiple unidirectional ventilation units 402 arranged in a circular pattern are installed on the outer side of the bottom of the ventilation hood 401. The adjusting knob 411 is connected to the sealing seat 412 and the metal top seat 409 respectively through the second support spring 413 and the first support spring 410, thereby facilitating heat dissipation for the drive motor 405. At this time, the airflow drives the elastic sealing block 407 and the metal top seat 409 to move upward and separate from the conical air guide sleeve 406 through multiple conical air guide sleeves 406, and the sealing 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 provide elastic support for the sealing seat 412 and the metal top seat 409 respectively, which can maintain the sealing stability of the ventilation hood 401 when the driving motor 405 is not running, and prevent particles and water from entering the inside of the ventilation hood 401 and affecting the life of the driving motor 405.

[0046] The first air injection pipe 305 can simultaneously inject air into the first positive pressure chamber 506 and the third positive pressure chamber 510 through the diversion box 306 and the air guide pipe 307. The first positive pressure chamber 506 and the second positive pressure chamber 507 are connected through multiple air guide channels 509. Thus, the third positive pressure chamber 510, the second positive pressure chamber 507 and the first positive pressure chamber 506 can sequentially seal the breaker 501 and the sealing sleeve 503 in the positive pressure state. At the same time, it can effectively maintain the service life and sealing stability of the inner sealing ring of the drill body sealing ring 508, and prevent water from seeping into the sealing sleeve 503 and the breaker 501 when the rock drilling mechanism 2 enters the water.

[0047] The excavator body 1 drives the rock drilling mechanism 2 into the water through the hydraulic arm, so that the bottom end of the rock breaking drill 501 contacts the construction surface. Then, the hydraulic oil circuit is used to reciprocate to deliver hydraulic oil to the inside 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. In this way, the hydraulic oil can drive the piston rod 610 to perform axial reciprocating motion under the sealing action 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] Simultaneously, the drive motor 405 is activated, causing the drive motor 405 to drive the conical rotating sleeve 604 to reciprocate under the support of the protective housing 302. 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 post 609. Then, the transmission block 607 drives the piston rod 610 to perform axial reciprocating pressing on the crushing rod 501, so that the crushing rod 501 can perform rapid and stable crushing operation on the construction surface. This allows the transmission block 607 to be electrically pressurized simultaneously while the piston rod 610 is hydraulically driven, thereby improving the crushing effect of the crushing rod 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 implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A hydraulic rock drill for underwater construction, comprising a rock drilling mechanism (2), characterized in that: The rock drilling mechanism (2) includes 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) includes a ventilation hood (401), and multiple one-way ventilation units (402) are installed on the outer side of the bottom end of the ventilation hood (401). The one-way ventilation unit (402) includes a conical air guide sleeve (406), and a limit sleeve (408) is installed at the upper end of the conical air guide sleeve (406). An elastic sealing 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 face of the elastic sealing block (407). The metal top seat (409) has an adjusting knob (411) slidably connected to the inner side of its upper end. A first support spring (410) is provided between the metal top seat (409) and the adjusting knob (411). A sealing seat (412) is slidably connected to the upper end of the limiting sleeve (408). A second support spring (413) is provided on the upper end face of the sealing seat (412). The gas injection isolation rock drilling assembly (5) includes a sealing sleeve (503). 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) from top to bottom. The rock drilling mechanism (2) is equipped with an excavator body (1) on one side. The rock drilling mechanism (2) also includes a protective conveying component (3) disposed between the ventilation drive component (4) and the air injection isolation rock drilling component (5). The protective conveying component (3) is equipped with a synchronous energy storage component (6). The ventilation drive component (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). A second air injection pipe (404) is threadedly connected to the inner side of the ventilation sealing sleeve (403). A ventilation gap is provided between the ventilation hood (401) and the drive motor (405). The second air injection pipe (404) is connected to multiple conical air guide sleeves (406) through the ventilation gap. The gas-injection isolation rock drilling assembly (5) also includes a breaking drill bit (501) that is 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 bit 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). 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 multiple gas guide channels (509). The multiple gas guide channels (509) are arranged in a circle relative to the axis of the breaking drill bit (501).

2. The hydraulic rock drill for underwater construction according to claim 1, characterized in that: The protective conveying assembly (3) includes a protective housing (302). The protective housing (302) has mounting side plates (301) fixedly installed on both the front and rear ends. A diversion box (306) is fixedly installed on one side of the protective housing (302). A duct pipe (307) and a first duct pipe (305) are fixedly installed on one side of the diversion box (306). The first duct pipe (305) is located above the duct pipe (307). A first hydraulic oil conveying pipe (303) is installed behind the first duct pipe (305). A second hydraulic oil conveying pipe (304) is installed behind the first hydraulic oil conveying pipe (303).

3. The hydraulic rock drill for underwater construction according to claim 2, 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 housing (302) through the second isolation plate (603). Two guide ends (602) are provided on one side of the piston sleeve (601). 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). The first piston sealing ring (611) and the second piston sealing ring (612) are connected to the protective housing (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 multiple spiral grooves (606). Multiple guide posts (609) are fixedly provided on the outer surface of the transmission block (607). A positioning retaining ring (605) is rotatably connected to the outer side of the upper end of the conical rotating sleeve (604). The positioning retaining ring (605) is fixedly connected to the protective box (302). A guide rod (608) is installed between the conical rotating sleeve (604) and the transmission block (607).

4. The hydraulic rock drill for underwater construction according to claim 3, characterized in that: The bottom ends of the ventilation hood (401) and the drive motor (405) are fixedly connected to the protective housing (302). The multiple unidirectional 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 bottom end of the conical air guide sleeve (406) is fixedly connected to the ventilation hood (401), and the upper end of the conical air guide sleeve (406) is connected to the limiting sleeve (408). The bottom end of the adjusting knob (411) passes through the sealing seat (412) and the limiting sleeve (408) and is inserted into the inner side of the metal top seat (409) via a threaded connection. The adjusting knob (411) and the limiting sleeve (408) are connected by a thread. The adjusting knob (411) is connected to the sealing seat (412) and the metal top seat (409) respectively via a second support spring (413) and a first support spring (410). The metal top seat (409) is fixedly connected to the elastic sealing block (407).

5. The hydraulic rock drill for underwater construction according to claim 4, 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) and the air guide pipe (307) are connected through the diversion box (306). The diversion box (306) is connected to the first positive pressure chamber (506). The diversion 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. A one-way valve is provided on the inner side of the bottom end of the air guide pipe (307).

6. The hydraulic rock drill for underwater construction according to claim 5, 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 breaking rod (501) passes through the positive pressure isolation cover (502), the sealing sleeve (503) and the rod body sealing ring (508) and is inserted into the inner side of the middle part of the first isolation plate (504). The upper end of the breaking rod (501) is slidably connected to the piston rod (610). The rod body sealing ring (508) is fixedly connected to the sealing sleeve (503). A sealing ring is provided between the rod body sealing ring (508) and the breaking rod (501).

7. The hydraulic rock drill for underwater construction according to claim 6, characterized in that: The piston sleeve (601) is fixedly connected to the second piston sealing ring (612) and 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 all provided with sealing rings between them and the piston rod (610). The piston rod (610) slides linearly back and forth along the axis of the piston sleeve (601).

8. The hydraulic rock drill for underwater construction according to claim 7, characterized in that: The conical rotating sleeve (604) and the protective box (302) are rotatably connected by a positioning 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). The multiple 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 multiple spiral grooves (606) and guide posts (609) is the same. One end of the guide post (609) is inserted into the inner side of the spiral groove (606).

Images