Drill rod clamping prevention device of hydraulic rock drill

Abstract

The utility model relates to the field of hydraulic rock drills, in particular to an anti-jamming device of a hydraulic rock drill, which comprises a front end cover and a bit shank, the inner side wall of the front end cover is fixedly connected with equidistantly arranged loop bars I and equidistantly arranged springs, and the right side surface of each loop bar I is provided with a sliding groove; a first sleeve rod and a spring are arranged on the inner side wall of the front end cover, the sliding grooves are formed, the sliding blocks are placed on the inner walls of the sliding grooves to slide, when the bit shank moves due to impact force, the limiting blocks are driven to move, the limiting blocks make contact with the balls, and therefore the bit shank is driven to move. The second sleeve rod drives the sliding block to move in the sliding groove, at the moment, the springs are compressed, then the reverse movement effect of the limiting block is achieved under the action of the springs, then the device can reset the bit shank by arranging the springs, friction force between the bit shank and rock is reduced, and therefore the effect of preventing the bit from being clamped is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic rock drills, in particular to an anti-jamming device for hydraulic rock drills. Background Art

[0002] A rock drill with an independent rotary mechanism that uses high-pressure oil as power to propel a piston into contact with a drill bit. A valve controls the reciprocating motion of the piston. Because oil pressure is much higher than air pressure, exceeding 10 MPa, this machine is similar to a pneumatic rock drill, but its piston diameter is smaller, its length is longer, and its waveform is more refined. An accumulator is installed to prevent peak pressure from occurring when the piston changes direction.

[0003] After searching, a Chinese patent with publication number CN217897740U discloses a hydraulic rock drill, the technical key of which is to solve the problems of low energy utilization, high energy consumption and inconvenience for workers to disassemble and maintain the existing rock drills during use.

[0004] However, the above solution found that when the rock drill is in use, there is a lack of a structure to prevent the drill from getting stuck, which can easily cause the drill tail to get stuck in the rock and cannot be removed, causing damage to the rock drill and affecting construction.

[0005] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0006] In view of the above background technology, there are few existing structures that can prevent the drill from getting stuck, which can easily cause the drill tail to get stuck in the rock and cannot be removed, easily causing damage to the rock drill and affecting the construction.

[0007] The utility model discloses an anti-jamming device for a hydraulic rock drill, comprising a front end cover and a drill tail, wherein the inner side wall of the front end cover is fixedly connected with a sleeve rod 1 and a spring arranged at an equal distance, the right side of each sleeve rod 1 is provided with a sliding groove, the inner wall of each sliding groove is slidably connected with a sliding block, the right side of each sliding block is fixedly connected with a sleeve rod 2, the right end of each sleeve rod 2 is fixedly connected with a round block, the inner wall of each round block is sleeved with a ball, the left side of each round block is fixedly connected to the right end of the corresponding spring, the outer surface of the drill tail is fixedly connected with a limiting block, and the outer surface of each ball contacts the left side of the limiting block.

[0008] Furthermore, a rock drill body is fixedly mounted on the right side of the front end cover, and a motor is fixedly connected to the upper surface of the rock drill body.

[0009] Furthermore, the output shaft of the motor is fixedly connected to a rotating rod 1, and the outer surface of the rotating rod 1 is fixedly connected to a gear 1.

[0010] Furthermore, the outer surface of the gear one is meshed with the gear two, and the inner wall of the gear two is fixedly connected with the rotating rod two.

[0011] Furthermore, the outer surface of the rotating rod 1 is rotatably connected to a protective shell, the inner wall of the protective shell is rotatably connected to both ends of the rotating rod 2, and the outer surface of the protective shell is fixedly connected to the outer surface of the rock drill body.

[0012] Furthermore, the outer surface of the gear 2 is meshed with the gear 3, the inner wall of the gear 3 is fixedly connected with a shaft sleeve, and the inner wall of the shaft sleeve is slidably connected to the outer surface of the shank.

[0013] Furthermore, sealing rings are provided on the left and right sides of the sleeve, and the outer surface of each sealing ring is fixedly mounted to the inner wall of the rock drill body.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The utility model is provided with a sleeve rod 1, a sliding block, a sleeve rod 2, a round block, a ball, a limit block, a spring and other components. The sleeve rod 1 and the spring are provided on the inner side wall of the front end cover, a sliding groove is opened and the sliding block is placed on the inner wall thereof to slide. When the drill tail is moved by the impact force, the limit block is driven to move. Through the contact between the limit block and the ball, the sleeve rod 2 drives the sliding block to move inside the sliding groove. At this time, the spring is compressed, and then under the action of multiple springs, the limit block is achieved. The reverse movement effect, thereby realizing that the device can realize the reset of the drill tail by arranging multiple springs, reduce the friction between the drill tail and the rock, and thus achieve the effect of preventing the drill from getting stuck.

[0016] 2. The utility model is provided with components such as a rotating rod 1, a gear 1, a gear 2, a rotating rod 2, a gear 3, and a shaft sleeve. The rotating rod 1 is driven to rotate by a motor, and the rotating rod 1 drives the gear 1 to rotate. The rotation effect of the gear 2 is achieved through the connection between the gear 1 and the gear 2. The limiting effect of the gear 2 is achieved through the connection between the rotating rod 2 and the protective shell. Then, the rotation effect of the gear 3 is achieved through the connection between the gear 2 and the gear 3. The shaft sleeve is driven to rotate through the gear 3. Due to the sliding connection between the shaft sleeve and the drill tail, when the drill tail is hit by the piston impact rod, the movement effect of the drill tail can be achieved. The drill tail can be driven to rotate through the shaft sleeve, thereby achieving the rock drilling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 3 This is a schematic structural diagram of the connection relationship between the sliding block and the sliding groove of the utility model;

[0021] Figure 4 This is a structural diagram of the connection relationship between gear 1 and gear 2 of the utility model.

[0022] In the figure: 1. Front cover; 2. Sleeve rod 1; 3. Sliding groove; 4. Sliding block; 5. Sleeve rod 2; 6. Round block; 7. Ball bearing; 8. Drill tail; 9. Limit block; 10. Rock drill body; 11. Motor; 12. Rotating rod 1; 13. Gear 1; 14. Gear 2; 15. Rotating rod 2; 16. Protective shell; 17. Gear 3; 18. Bushing; 19. Sealing ring; 20. Spring. DETAILED DESCRIPTION

[0023] The following diagrams illustrate various embodiments of the present invention. For clarity, many physical details will be included in the following description. However, it should be understood that these physical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these physical details are not essential. Furthermore, to simplify the illustrations, some commonly used structures and components are depicted in a simplified schematic manner.

[0024] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 The utility model is a device for preventing drill jams of a hydraulic rock drill, comprising a front end cover 1 and a drill tail 8. The inner side wall of the front end cover 1 is fixedly connected with sleeve rods 2 and springs 20 arranged at equal distances. The sleeve rods 2 are installed on the inner side wall of the front end cover 1 to achieve the positioning and installation effect of the sleeve rods 2 and the springs 20. The right side of each sleeve rod 2 is provided with a sliding groove 3. The sliding groove 3 is opened on the right side of the sleeve rod 2 to achieve the positioning effect of the sliding groove 3. The inner wall of each sliding groove 3 is slidably connected with a sliding block 4. The sliding block 4 is placed inside the sliding groove 3 and is set to be in sliding connection. The limiting effect of the sliding block 4 can be achieved by the contour of the sliding groove 3.

[0025] like Figure 3As shown, the right side of each sliding block 4 is fixedly connected with a sleeve rod 2 5, and the sleeve rod 2 5 is installed on the right side of the corresponding sliding block 4 to achieve the positioning and installation effect of the sleeve rod 2 5. The movement of the sliding block 4 can achieve the movement effect of the sleeve rod 2 5. The right end of each sleeve rod 2 5 is fixedly connected with a round block 6, and the round block 6 is installed on the right end of the sleeve rod 2 5, and is set to be fixedly connected. The movement effect of the round block 6 can be achieved by moving the sleeve rod 2 5. The inner wall of each round block 6 is sleeved with a ball 7, and the ball 7 is installed on the inner wall of the round block 6, and is set to be sleeved to achieve the installation of the ball 7.

[0026] In a preferred embodiment, the left side of each round block 6 is fixedly connected to the right end of the corresponding spring 20, and the left side of the round block 6 is connected to the spring 20. The round block 6 can be tightened by the spring 20 to facilitate the resetting of the round block 6. The outer surface of the shank 8 is fixedly connected to the limit block 9, and the limit block 9 is installed on the outer surface of the shank 8. The movement effect of the limit block 9 can be achieved by moving the shank 8. The outer surface of each ball 7 is in contact with the left side of the limit block 9. The surface of the ball 7 is in contact with the left side of the limit block 9, and the friction between the ball 7 and the limit block 9 can be reduced by the ball 7.

[0027] In this embodiment, the right side of the front end cover 1 is fixedly mounted with a rock drill body 10, which is mounted on the right side of the front end cover 1. The front end cover 1 is installed through the rock drill body 10. The upper surface of the rock drill body 10 is fixedly connected with a motor 11, which is mounted on the upper surface of the rock drill body 10 to achieve a positioning installation effect for the motor 11.

[0028] like Figure 4 As shown, the output shaft of the motor 11 is fixedly connected to the rotating rod 12, and the rotating rod 12 is installed on the output shaft of the motor 11, and is set to be fixedly connected. The rotation effect of the rotating rod 12 can be achieved through the motor 11. The outer surface of the rotating rod 12 is fixedly connected to the gear 13, and the gear 13 is installed on the surface of the rotating rod 12 and is set to be fixedly connected. The rotation effect of the gear 13 can be achieved by rotating the rotating rod 12.

[0029] In a preferred embodiment, the outer surface of gear 13 is meshed with gear 2 14, and gear 2 14 is placed below gear 13 and connected. The rotation effect of gear 2 14 can be achieved by rotating gear 13. The inner wall of gear 2 14 is fixedly connected with rotating rod 2 15, and rotating rod 2 15 is installed on the inner wall of gear 2 14 and set to be fixedly connected. The rotation effect of rotating rod 2 15 can be achieved by rotating gear 2 14.

[0030] In this embodiment, the outer surface of the rotating rod 12 is rotatably connected to a protective shell 16, and the protective shell 16 is installed on the outer surface of the rotating rod 12 and is set to be rotatably connected. The inner wall of the protective shell 16 is rotatably connected to the two ends of the rotating rod 2 15, and the protective shell 16 is connected to the rotating rod 2 15 and is set to be rotatably connected to achieve a supporting and limiting effect on the rotating rod 2 15. The outer surface of the protective shell 16 is fixedly connected to the outer surface of the rock drill body 10, and the protective shell 16 is connected to the rock drill body 10 to achieve the installation of the protective shell 16.

[0031] In a preferred embodiment, the outer surface of gear two 14 is meshed with gear three 17, and gear three 17 is placed below gear two 14 and connected thereto. The rotation effect of gear three 17 can be achieved by rotating gear two 14. The inner wall of gear three 17 is fixedly connected with a shaft sleeve 18, and the shaft sleeve 18 is installed on the inner wall of gear three 17 and is arranged to be fixedly connected. The rotation effect of the shaft sleeve 18 can be achieved by rotating gear three 17. The inner wall of the shaft sleeve 18 is slidably connected to the outer surface of the shank 8, and the shank 8 and the shaft sleeve 18 are arranged to slide. The rotation of the shaft sleeve 18 can achieve the rotation of the shank 8, and the impact of the piston impact rod can make the shank 8 produce a moving effect.

[0032] In this embodiment, sealing rings 19 are provided on the left and right sides of the sleeve 18. The sealing rings 19 are placed on the left and right sides of the sleeve 18. The outer surface of each sealing ring 19 is fixedly mounted to the inner wall of the rock drill body 10. The sealing ring 19 is connected to the rock drill body 10. The sealing ring 19 facilitates the positioning of the sleeve 18, thereby ensuring that gear three 17 can be connected to gear two 14.

[0033] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A drill bit anti-sticking device for a hydraulic rock drill, comprising a front end cover (1) and a drill tail (8), characterized in that: The inner side wall of the front end cover (1) is fixedly connected with sleeve rods (2) and springs (20) arranged at equal distances. The right side of each sleeve rod (2) is provided with a sliding groove (3). The inner wall of each sliding groove (3) is slidably connected with a sliding block (4). The right side of each sliding block (4) is fixedly connected with sleeve rods (5). The right end of each sleeve rod (5) is fixedly connected with a round block (6). The inner wall of each round block (6) is sleeved with a ball (7). The left side of each round block (6) is fixedly connected to the right end of the corresponding spring (20). The outer surface of the shank tail (8) is fixedly connected to a limit block (9). The outer surface of each ball (7) contacts the left side of the limit block (9).

2. The anti-jamming device for a hydraulic rock drill according to claim 1, characterized in that: A rock drill body (10) is fixedly mounted on the right side of the front end cover (1), and a motor (11) is fixedly connected to the upper surface of the rock drill body (10).

3. The anti-jamming device for a hydraulic rock drill according to claim 2, characterized in that: The output shaft of the motor (11) is fixedly connected to a rotating rod (12), and the outer surface of the rotating rod (12) is fixedly connected to a gear (13).

4. The anti-jamming device for a hydraulic rock drill according to claim 3, characterized in that: The outer surface of the gear 1 (13) is meshed with the gear 2 (14), and the inner wall of the gear 2 (14) is fixedly connected with the rotating rod 2 (15).

5. The anti-jamming device for a hydraulic rock drill according to claim 4, characterized in that: The outer surface of the rotating rod (12) is rotatably connected to a protective shell (16), the inner wall of the protective shell (16) is rotatably connected to the two ends of the rotating rod (15), and the outer surface of the protective shell (16) is fixedly connected to the outer surface of the rock drill body (10).

6. The anti-jamming device for a hydraulic rock drill according to claim 4, characterized in that: The outer surface of the gear 2 (14) is meshed with the gear 3 (17), the inner wall of the gear 3 (17) is fixedly connected with a shaft sleeve (18), and the inner wall of the shaft sleeve (18) is slidably connected with the outer surface of the shank (8).

7. The anti-jamming device for a hydraulic rock drill according to claim 6, characterized in that: Sealing rings (19) are provided on the left and right sides of the shaft sleeve (18), and the outer surface of each sealing ring (19) is fixedly mounted on the inner wall of the rock drill body (10).

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