Hydraulic device of drilling and cracking integrated machine

Abstract

The utility model discloses a kind of drilling and splitting integrated machine hydraulic devices, belong to hydraulic device technical field, including oil cylinder steel cylinder, the inner cylinder cover is connected in the oil cylinder steel cylinder bottom inner wall, the lower cylinder body is communicated in the oil cylinder steel cylinder bottom, hydraulic mechanism, the hydraulic mechanism includes the moving column arranged in the inside of oil cylinder steel cylinder, the second piston is connected in the moving column bottom end, the second piston is configured to slide inside lower cylinder body, the second piston separates the space inside lower cylinder body into two parts, the area from the second piston top to the inner cylinder cover bottom is third oil cavity, oil injection into third oil cavity can make the thrust of hydraulic system output promote, in the utility model, by setting hydraulic mechanism, the thrust that device can output is stronger, while the enhancement amplitude of thrust can be dynamically adjusted according to actual working condition requirement, the versatility of device is enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic device technology, and in particular relates to a hydraulic device for a drilling and fracturing integrated machine. Background Technology

[0002] The integrated drilling and splitting machine is a heavy-duty rock-breaking device that integrates drilling and splitting functions. It mainly consists of a hydraulic rock drill, a hydraulic splitter, and a hydraulic valve group. The hydraulic rock drill drives the drill bit to precisely position and drill holes in the rock, forming regular holes. Switching to splitting mode, splitting wedges are inserted into the holes, and hydraulic pressure causes the rock to split in a predetermined direction. The integrated drilling and splitting machine is designed for efficient crushing of hard rock and can complete the entire process of drilling and splitting with a single machine, replacing the traditional step-by-step construction mode. It is widely used in mining, tunnel engineering, building demolition, and environmental protection construction.

[0003] Traditional rock-breaking operations require separating drilling and rock-breaking processes, necessitating frequent machine shutdowns and equipment changes during construction. This process is time-consuming and labor-intensive, severely impacting the overall smoothness of the construction. Furthermore, the core actuators of existing integrated drilling and rock-breaking machines are typically single-chamber or fixed-chamber hydraulic cylinders. The output thrust directly depends on the main oil circuit pressure of the system, resulting in a constant thrust that cannot be adjusted during construction. On-site conditions are complex and variable, with significant differences in hardness, texture, and crack resistance among different rock strata. When dealing with high-hardness rock strata, insufficient equipment thrust necessitates repeated drilling at a single point, leading to low work efficiency. Conversely, excessive thrust when handling softer rock strata can cause excessive damage to the borehole wall, affecting construction quality and progress. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that the output thrust of the hydraulic valve group of the existing drilling and fracturing machine is constant and difficult to adapt to different working conditions, and to propose a hydraulic device for the drilling and fracturing machine.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a hydraulic device for an integrated drilling and fracturing machine, comprising a cylinder steel barrel, an inner cylinder cover connected to the bottom inner wall of the cylinder steel barrel, a lower cylinder body connected to the bottom of the cylinder steel barrel, and a hydraulic mechanism, the hydraulic mechanism comprising a movable column disposed inside the cylinder steel barrel, a second piston connected to the bottom end of the movable column, the second piston being configured to slide inside the lower cylinder body, the second piston dividing the internal space of the lower cylinder body into two parts, the area from the top of the second piston to the bottom of the inner cylinder cover being a third oil chamber, and injecting oil into the third oil chamber can increase the thrust output by the hydraulic system.

[0006] Preferably, a first piston is connected to the top of the movable column. The first piston divides the internal space of the cylinder into two parts: the area from the top of the first piston to the top of the inner wall of the cylinder is the first oil chamber, and the area from the bottom of the first piston to the top of the inner cylinder head is the second oil chamber.

[0007] Preferably, a connecting groove is provided at the axis of the movable column. The cross-sectional shape of the connecting groove is L-shaped. The longer end of the L-shaped connecting groove is connected to the first oil cavity, and the shorter end of the L-shaped connecting groove is connected to the third oil cavity.

[0008] Preferably, the top of the cylinder is provided with a first oil inlet, which is connected to the first oil chamber. The top of the outer wall of the cylinder is provided with a second oil inlet. The bottom of the outer wall of the cylinder is provided with an oil injection hole, which is connected to the second oil chamber. An oil pipe is connected to the bottom of the second oil inlet, and one end of the oil pipe is connected to the oil injection hole.

[0009] Preferably, the bottom end of the lower cylinder block is connected to an outer cylinder cover, and two mounting plates are symmetrically arranged on the outer wall of the outer cylinder cover. A splitting block is connected to one side of the mounting plate, and multiple springs are arranged between the splitting block and the mounting plate. The two ends of the springs are fixedly connected to the corresponding positions of the outer wall of the splitting block and the outer wall of the mounting plate, respectively.

[0010] Preferably, a connecting post is embedded at the bottom of the second piston, and an insertion hole is opened on the outer wall of the connecting post, and a flat pin passes through the insertion hole.

[0011] Preferably, a wedge is connected to the bottom of the connecting column, the outer walls of the two sides of the wedge are slidably connected to the outer walls of the corresponding splitting blocks, an upper support cover is connected to the top of the cylinder steel barrel, and gears are provided on the outside of the lower cylinder body.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0013] 1. In this utility model, by setting up a hydraulic mechanism and adding an extra oil chamber inside the oil cylinder, the thrust that the hydraulic mechanism can apply is increased. At the same time, by controlling the hydraulic oil pressure inside the extra third oil chamber, the enhanced thrust intensity can be controlled within a certain range. The output thrust can be adjusted according to the actual working conditions at the work site, thereby enhancing the versatility and adaptability of the device.

[0014] 2. In this utility model, by integrating the drilling device and the rock-splitting device, the working mode of the equipment can be adjusted simply by rotating the working head during actual work, thus realizing the seamless execution of the drilling and rock-splitting operations, improving the smoothness of construction, and increasing work efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a hydraulic device for an integrated drilling and fracturing machine proposed in this utility model;

[0016] Figure 2 This is a schematic diagram showing the disassembled structure of a hydraulic device for an integrated drilling and fracturing machine proposed in this utility model;

[0017] Figure 3 This is a half-sectional structural diagram of a hydraulic device for an integrated drilling and fracturing machine proposed in this utility model;

[0018] Figure 4 This utility model Figure 4 A magnified structural diagram of part A in the middle;

[0019] Figure 5 This utility model Figure 4 A magnified structural diagram of part B.

[0020] Legend: 1. Cylinder steel barrel; 2. Inner cylinder head; 3. Lower cylinder body; 4. Outer cylinder head; 5. Hydraulic mechanism; 501. Moving column; 502. Connecting groove; 503. First piston; 504. Second piston; 505. First oil chamber; 506. Second oil chamber; 507. Third oil chamber; 508. Oil injection hole; 509. First oil inlet; 510. Oil pipe; 511. Second oil inlet; 6. Upper support cover; 7. Flat pin; 8. Connecting column; 9. Wedge; 10. Mounting plate; 11. Spring; 12. Splitting block; 13. Gear. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 This utility model provides a technical solution: a hydraulic device for a drilling and fracturing integrated machine, including a cylinder 1, an inner cylinder cover 2 connected to the bottom inner wall of the cylinder 1, a lower cylinder 3 connected to the bottom of the cylinder 1, and a hydraulic mechanism 5. The hydraulic mechanism 5 includes a movable column 501 disposed inside the cylinder 1, a second piston 504 connected to the bottom end of the movable column 501, the second piston 504 being configured to slide inside the lower cylinder 3, the second piston 504 dividing the internal space of the lower cylinder 3 into two parts, and the area from the top of the second piston 504 to the bottom of the inner cylinder cover 2 being a third oil chamber 507, injecting oil into the third oil chamber 507 can increase the thrust output of the hydraulic system.

[0023] The top of the movable column 501 is externally connected to a first piston 503. The first piston 503 divides the internal space of the cylinder steel barrel 1 into two parts. The area from the top of the first piston 503 to the top of the inner wall of the cylinder steel barrel 1 is the first oil chamber 505, and the area from the bottom of the first piston 503 to the top of the inner cylinder head 2 is the second oil chamber 506.

[0024] A connecting groove 502 is provided at the axial position of the movable column 501. The cross-sectional shape of the connecting groove 502 is L-shaped. The longer end of the L-shaped connecting groove 502 is connected to the first oil cavity 505, and the shorter end of the L-shaped connecting groove 502 is connected to the third oil cavity 507.

[0025] The top of the cylinder steel barrel 1 is provided with a first oil inlet 509, which is connected to the first oil chamber 505. The top of the outer wall of the cylinder steel barrel 1 is provided with a second oil inlet 511. The bottom of the outer wall of the cylinder steel barrel 1 is provided with an oil injection hole 508, which is connected to the second oil chamber 506. The bottom of the second oil inlet 511 is connected to an oil pipe 510, one end of which is connected to the oil injection hole 508.

[0026] Specifically, the external oil circuit system injects hydraulic oil into the first oil chamber 505 through the first oil inlet 509. The hydraulic oil in the first oil chamber 505 pushes the first piston 503 downwards through its own fluid pressure, increasing the volume of the first oil chamber 505. The first piston 503 drives the moving column 501 to move downwards. The moving column 501 pushes the second piston 504 downwards, moving the second piston 504 away from the inner cylinder head 2. The volume of the third oil chamber 507 increases, generating a pressure difference. This causes the hydraulic oil in the first oil chamber 505 to enter the connecting groove 502 from the longer end of the L-shaped connecting groove 502, and then exit the connecting groove 502 from the shorter end of the L-shaped connecting groove 502 and flow into the third oil chamber 507. After flowing into the third oil chamber 507, the hydraulic oil pushes the second piston 504 downwards through its own fluid pressure. The hydraulic oil in the first oil chamber 505 and the third oil chamber 507 work simultaneously, enhancing the thrust of the hydraulic system. When it is necessary to retract the moving column... At position 501, the external oil circuit system injects hydraulic oil into the second oil inlet 511. The hydraulic oil moves along the direction of the oil pipe 510 and flows into the second oil chamber 506 through the oil injection hole 508. The hydraulic oil in the second oil chamber 506 pushes the first piston 503 upward through its own fluid pressure, causing the first piston 503 to move upward and reducing the volume of the first oil chamber 505. At the same time, the external oil circuit system extracts the hydraulic oil inside the first oil chamber 505 from the first oil inlet 509. Simultaneously, the second piston 504 moves upward with the moving column 501, and the volume of the third oil chamber 507 also decreases. A pressure difference is generated between the first oil chamber 505 and the third oil chamber 507. The hydraulic oil in the third oil chamber 507 enters the connecting groove 502 from the shorter end of the L-shaped connecting groove 502, and then flows into the first oil chamber 505 from the longer end of the L-shaped connecting groove 502 before being extracted by the external oil circuit system. This cycle realizes the reciprocating motion of the moving column 501.

[0027] It should be noted that the external oil circuit system described above consists of a flow distributor, a diverter valve, and a proportional valve. The flow distributor distributes the oil flow, while the diverter valve and proportional valve precisely control the oil flow rate and pressure. This part is well-known technology in the field and will not be elaborated here.

[0028] The bottom end of the lower cylinder body 3 is connected to the outer cylinder cover 4. Two mounting plates 10 are symmetrically arranged on the outer wall of the outer cylinder cover 4. A splitting block 12 is connected to one side of the mounting plate 10. Multiple springs 11 are arranged between the splitting block 12 and the mounting plate 10. The two ends of the springs 11 are fixedly connected to the corresponding positions of the outer wall of the splitting block 12 and the outer wall of the mounting plate 10, respectively.

[0029] The bottom of the second piston 504 is fitted with a connecting post 8, the outer wall of the connecting post 8 is provided with an insertion hole, and a flat pin 7 passes through the insertion hole.

[0030] The bottom of the connecting column 8 is connected to a wedge block 9. The outer walls on both sides of the wedge block 9 are slidably connected to the outer walls of the corresponding splitting blocks 12. The top of the cylinder steel cylinder 1 is connected to an upper support cover 6, and a gear 13 is provided on the outside of the lower cylinder body 3.

[0031] Specifically, the wedge 9 has a triangular cross-sectional shape. In the initial state, the ends of the two split blocks 12 on the left and right are in contact with each other. At this time, the shape of the gap between the two split blocks 12 is the same as the cross-sectional shape of the wedge 9. One end of the wedge 9 is connected to the bottom of the second piston 504 through the connecting post 8. The flat pin 7 passes through the insertion groove on the outer wall of the connecting post 8 to lock the relative position of the second piston 504 and the connecting post 8, so that the wedge 9 moves with the second piston 504. After the end of the split block 12 is inserted into the drill hole on the surface of the stone, the second piston 504 moves downward, driving the wedge 9 to move downward. During the downward movement of the wedge 9, the inclined surfaces on both sides of the wedge 9 push the split block 12 outward. The outer wall of the split block 12 is in contact with the inner wall of the drill hole of the stone and applies an outward pushing force to the inner wall of the drill hole, splitting the stone from the drill hole. The reaction force when the stone is split is offset by the elastic force of the spring 11, reducing the stress on the split block 12.

[0032] Working principle: When using the machine, the operator first determines the support point to ensure the stability of the equipment. Then, the operator uses the drill bit of the drilling and splitting machine to drill a hole of appropriate depth on the surface of the stone. The operator then rotates the working head to switch to the stone splitting mode, aligning the splitting block 12 with the drill hole. The operator then inserts the end of the splitting block 12 into the drill hole to the appropriate depth. The operator then activates the external oil circuit system, causing the hydraulic mechanism 5 to push the wedge 9 downwards. The wedge 9 pushes the splitting block 12 to both sides, splitting the stone from the drill hole position. The operator then moves the equipment to the next stone to be processed and repeats the above operation.

[0033] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hydraulic device for an integrated drilling and fracturing machine, characterized in that, include: The cylinder is made of steel (1), and the inner wall of the bottom of the cylinder is connected to an inner cylinder cover (2). The bottom of the cylinder is connected to a lower cylinder body (3). The hydraulic mechanism (5) includes a movable column (501) disposed inside the cylinder (1). The bottom end of the movable column (501) is connected to a second piston (504). The second piston (504) is configured to slide inside the lower cylinder (3). The second piston (504) divides the internal space of the lower cylinder (3) into two parts. The area from the top of the second piston (504) to the bottom of the inner cylinder cover (2) is a third oil chamber (507). Injecting oil into the third oil chamber (507) can increase the thrust output of the hydraulic system.

2. The hydraulic device for a drilling and fracturing integrated machine according to claim 1, characterized in that, The top of the movable column (501) is connected to a first piston (503). The first piston (503) divides the internal space of the cylinder steel barrel (1) into two parts. The area from the top of the first piston (503) to the top of the inner wall of the cylinder steel barrel (1) is the first oil chamber (505), and the area from the bottom of the first piston (503) to the top of the inner cylinder cover (2) is the second oil chamber (506).

3. The hydraulic device for a drilling and fracturing integrated machine according to claim 1, characterized in that, The movable column (501) has a connecting groove (502) at its axial center. The cross-sectional shape of the connecting groove (502) is L-shaped. The longer end of the L-shaped connecting groove (502) is connected to the first oil cavity (505), and the shorter end of the L-shaped connecting groove (502) is connected to the third oil cavity (507).

4. The hydraulic device for a drilling and fracturing integrated machine according to claim 1, characterized in that, The top of the cylinder steel barrel (1) is provided with a first oil inlet (509), which is connected to the first oil chamber (505). The top of the outer wall of the cylinder steel barrel (1) is provided with a second oil inlet (511). The bottom of the outer wall of the cylinder steel barrel (1) is provided with an oil injection hole (508), which is connected to the second oil chamber (506). The bottom of the second oil inlet (511) is connected to an oil pipe (510), one end of which is connected to the oil injection hole (508).

5. The hydraulic device for a drilling and fracturing integrated machine according to claim 1, characterized in that, The bottom end of the lower cylinder body (3) is connected to an outer cylinder cover (4). Two mounting plates (10) are symmetrically arranged on the outer wall of the outer cylinder cover (4). A splitting block (12) is connected to one side of the mounting plate (10). Multiple springs (11) are arranged between the splitting block (12) and the mounting plate (10). The two ends of the springs (11) are fixedly connected to the corresponding positions of the outer wall of the splitting block (12) and the outer wall of the mounting plate (10).

6. The hydraulic device for a drilling and fracturing integrated machine according to claim 1, characterized in that, The bottom of the second piston (504) is provided with a connecting post (8), the outer wall of the connecting post (8) is provided with an insertion hole, and a flat pin (7) passes through the insertion hole.

7. The hydraulic device for a drilling and fracturing integrated machine according to claim 6, characterized in that, The bottom of the connecting column (8) is connected to a wedge (9), and the outer walls on both sides of the wedge (9) are slidably connected to the outer walls of the corresponding splitting block (12). The top of the cylinder steel cylinder (1) is connected to an upper support cover (6), and a gear (13) is provided on the outside of the lower cylinder body (3).

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