Noise reduction protection device for rock drill

Abstract

The utility model provides a noise reduction protection device for a rock drill, and relates to the technical field of noise prevention of hydraulic rock drills. The sound insulation piece is arranged on the installation base in a sleeving mode and used for shielding the output end of the rock drill when rock drilling operation is conducted at the output end of the rock drill, an annular sealing cavity is formed, the sound insulation piece makes contact with the rock wall, noise dust generated when the rock drill makes contact with rock is directly isolated in the digging stage, and the noise dust is prevented from expanding outwards; the end, away from the mounting base, of the sound insulation piece is provided with a sealing piece making contact with the rock wall and used for preventing noise from being discharged from a gap between the sound insulation piece and the rock wall, the sound insulation effect of the equipment is enhanced, the mounting base is provided with a shrinkage assembly used for controlling shrinkage of the sound insulation piece, and the sound insulation piece can be forced to be bent when making contact with the rock wall and be attached to the rock wall more tightly; therefore, the sealing performance between the sealing element and the rock wall is improved, and the transmission of sound is effectively blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of noise prevention of hydraulic rock drills, in particular to a noise reduction and protection device for rock drills. Background Art

[0002] Hydraulic rock drill is a special equipment used in mining, metallurgy and other industries. It is used to drill holes in high-hardness and brittle materials such as ores and rocks; or to assemble taphole machines. It has the characteristics of high impact power, high energy utilization rate and easy automatic control.

[0003] However, when the hydraulic rock drill is operating, the rock strata are repeatedly impacted, and localized rock strata are broken to form blastholes. The broken rock strata will generate a large amount of dust and produce a lot of noise. The dust will be inhaled by the construction workers, which will have an adverse effect on their health. The noise will gradually increase in the tunnel, and may even cause pneumoconiosis accidents and damage the hearing of the operators. Therefore, it is necessary to solve these problems. Utility Model Content

[0004] The purpose of the utility model is to provide a noise reduction and protection device for a rock drill, which can solve the problems raised by the above-mentioned background technology in view of the shortcomings of the prior art.

[0005] The technical solution of the utility model is achieved in this way:

[0006] The utility model provides a noise reduction and protection device for a rock drill, comprising a mounting seat sleeved on the rock drill body, a sound insulation piece sleeved on the mounting seat, a sealing piece in contact with a rock wall at the end of the sound insulation piece away from the mounting seat, and a shrinkage component for controlling the shrinkage of the sound insulation piece on the mounting seat.

[0007] In some technical solutions of the utility model, the sound insulation component includes a first sound insulation sleeve arranged on the mounting seat, a second sound insulation sleeve is arranged on the first sound insulation sleeve, a sound insulation chamber is formed between the first sound insulation sleeve and the second sound insulation sleeve, and a sealing component is arranged on the end of the first sound insulation sleeve away from the mounting seat.

[0008] In some technical solutions of the present utility model, the sound insulation chamber is filled with a honeycomb-shaped sound insulation board, a plurality of through holes are opened on the side wall of the sound insulation board, and the through holes are filled with silencers.

[0009] In some technical solutions of the present utility model, the sealing member is an annular airbag body arranged on the end of the sound insulation member.

[0010] In some technical solutions of the utility model, the shrinking assembly includes a mounting ring sleeved on the first sound insulation sleeve, a plurality of guide rods are arranged around the mounting ring, and the guide rods are all sleeved with guide sleeves connected to the mounting seat.

[0011] In some technical solutions of the present utility model, a limiting spring connected to the guiding rod is provided inside the guiding sleeve.

[0012] In some technical solutions of the present utility model, annular corrugated structures are provided on the outer walls of the first sound insulation sleeve and the second sound insulation sleeve.

[0013] Compared with the prior art, the embodiments of the present utility model have at least the following advantages or beneficial effects:

[0014] A sound insulation member is sleeved on the mounting seat. When rock drilling operation is carried out at the output end of the rock drill, the output end is shielded and contacts with the rock wall, directly isolating the noise and dust generated when the rock drill contacts the rock during the excavation stage, and preventing the noise and dust from spreading outwards; a sealing member contacting with the rock wall is provided at the end of the sound insulation member departing from the mounting seat for preventing the noise from discharging from the gap between the sound insulation member and the rock wall, enhancing the sound insulation effect of the equipment. A contraction assembly for controlling the contraction of the sound insulation member is provided on the mounting seat, which can force the sound insulation member to bend when contacting with the rock wall and fit more closely with the rock wall, avoiding gaps when the sealing member fits with the rock wall, thereby improving the sealing performance between the two and effectively blocking the transmission of sound. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 It is a front structural schematic diagram of the present utility model;

[0018] Figure 3 It is a sectional combined schematic diagram of the sound insulation member in the present utility model;

[0019] Figure 4 It is a sectional structural schematic diagram of the guiding sleeve and the guide in the present utility model;

[0020] Figure 5 It is a sectional structural schematic diagram of the sound absorption member in the present utility model;

[0021] Figure 6 It is an installation structural schematic diagram of the sound absorption member and the sound insulation board in the present utility model.

[0022] Icon: 1. Outer shell of the rock drill body; 2. Mounting seat; 3. First sound insulation sleeve; 4. Guide sleeve; 5. Guide rod; 6. Mounting ring; 7. Ring-shaped airbag body; 8. Sound insulation board; 9. Second sound insulation sleeve; 10. Limit spring; 11. Sound absorption component; 12. Sound absorption channel. Detailed implementation

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] Please refer to Figures 1-6 as shown.

[0027] The present utility model provides a noise reduction and protection device for a rock drill. As shown in Figure 1 and Figure 2 , it mainly solves the problems in the prior art that when the rock drill repeatedly impacts the rock formation, blast holes are formed by local fragmentation of the rock formation. A large amount of dust and extremely loud noise will be generated during the fragmentation of the rock formation, which is likely to cause damage to the hearing of the operator. To solve the above problems, the protection device includes a mounting seat 2 sleeved on the rock drill body. The mounting seat 2 is a ring-shaped structure adapted to the outer shell 1 of the rock drill body, and it is fixed on the outer shell of the rock drill body by screws. A sealing ring is also provided between the two to increase their sealing ability and sound insulation ability. A sound insulation component is sleeved on the mounting seat 2 to shield the output end of the rock drill during rock drilling operation at the output end of the rock drill, form a ring-shaped sealed chamber, and contact the rock wall, directly isolating the noise and dust generated when the rock drill contacts the rock during the excavation stage to prevent the noise and dust from spreading outward. A sealing member in contact with the rock wall is provided at the end of the sound insulation component facing away from the mounting seat 2 to prevent noise from escaping through the gap between the sound insulation component and the rock wall, enhancing the sound insulation effect of the device. A contraction component for controlling the contraction of the sound insulation component is provided on the mounting seat 2, which can force the sound insulation component to bend and fit more closely with the rock wall when it contacts the rock wall, avoiding gaps when the sealing member fits with the rock wall, thereby improving the sealing performance between the two and effectively blocking the transmission of sound.

[0028] In some technical solutions of the present utility model, the sound insulation member includes a first sound insulation sleeve 3 disposed on the mounting base 2. The first sound insulation sleeve 3 is fixed on the mounting base 2 through a snap ring and fastened to the mounting base 2 with bolts. A second sound insulation sleeve 9 is sleeved on the first sound insulation sleeve 3, and the two are integrally formed. The materials of both are rubber materials, which have good sound insulation and shock absorption effects. A sound insulation chamber is formed between the first sound insulation sleeve 3 and the second sound insulation sleeve 9. When the noise generated when the rock drill contacts the rock enters the sound insulation chamber, it can be refracted repeatedly between the first sound insulation sleeve 3 and the second sound insulation sleeve 9, thereby weakening the noise. The seal is disposed at the end of the first sound insulation sleeve 3 facing away from the mounting base 2, which can improve the blocking effect of the sound insulation member on the noise generated when the rock drill contacts the rock and enhance the sound insulation effect of the equipment.

[0029] In some technical solutions of the present utility model, a honeycomb-shaped sound insulation board 8 is filled in the sound insulation chamber, which can increase the propagation path of the noise in the sound insulation chamber. The sound insulation board 8 has a contraction space, and a plurality of through holes are formed in the side wall of the sound insulation board 8. A sound absorption member 11 is filled in the through holes. When the noise enters the sound absorption member 11 through the through holes, the propagation path of the noise is extended, and then the equipment improves the blocking effect of the sound insulation member on the noise generated when the rock drill contacts the rock.

[0030] Preferably, the provided sound absorption member 11 is in a thin tubular shape, and a spiral sound absorption channel 12 is provided on its inner wall.

[0031] In some technical solutions of the present utility model, the seal is an annular air bag body 7 disposed at the end of the sound insulation member. The provided annular air bag body 7 is filled with gas, and a wear-resistant layer is pasted on the outer layer of the annular air bag body 7 to increase the wear resistance of the annular air bag body 7. When the annular air bag body 7 contacts the rock wall, the irregular protrusions on the rock wall will squeeze the annular air bag body 7. At this time, the annular air bag body 7 fits with the rock wall, thereby improving the sealing performance between the two and effectively blocking the transmission of sound.

[0032] In some technical solutions of the present utility model, the contraction assembly includes a mounting ring 6 sleeved on the first sound insulation sleeve 3. A plurality of guide rods 5 are arranged around the mounting ring 6, and guide sleeves 4 connected to the mounting base 2 are sleeved on the guide rods 5. The above structure can apply a holding force to the sound insulation member under the restriction of the guide rods 5 and the guide sleeves 4, forcing the sound insulation member to be closer when contacting the rock wall, avoiding gaps when the annular air bag body 7 fits with the rock wall, thereby improving the sealing performance between the two and effectively blocking the transmission of sound.

[0033] In some technical solutions of the present utility model, a limiting spring 10 connected to the guide rod 5 is provided inside the guide sleeve 4 to apply a holding force to the sound insulation member, forcing the sound insulation member to be in closer contact with the rock wall when it contacts the rock wall. Through the above structure, the sound insulation member can adapt to different rock walls in a complex environment, ensuring that there are no gaps when the annular airbag body 7 fits with the rock wall, effectively blocking the transmission of sound.

[0034] In some technical solutions of the present utility model, annular corrugated structures are provided on the outer walls of the first sound insulation sleeve 3 and the second sound insulation sleeve 9. It is convenient for the first sound insulation sleeve 3 and the second sound insulation sleeve 9 to be easily bent after being squeezed, increasing the flexibility of the first sound insulation sleeve 3 and the second sound insulation sleeve 9. Moreover, when the corrugated structures provided on the first sound insulation sleeve 3 and the second sound insulation sleeve 9 act in the sound insulation chamber, they can reflect the noise, extending the propagation path of the noise, thereby improving the noise silencing effect of the device.

[0035] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various changes and modifications can be made to the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A noise reduction protection device for a rock drill, characterized in that: The invention comprises a mounting seat sleeved on the rock drill body, a sound insulation piece sleeved on the mounting seat, a sealing piece contacting the rock wall is arranged at the end of the sound insulation piece away from the mounting seat, and a contraction component for controlling the contraction of the sound insulation piece is arranged on the mounting seat.

2. A noise reduction and protection device for a rock drill according to claim 1, characterized in that: The sound insulation component includes a first sound insulation sleeve arranged on the mounting seat, a second sound insulation sleeve is sleeved on the first sound insulation sleeve, a sound insulation chamber is formed between the first sound insulation sleeve and the second sound insulation sleeve, and the sealing component is arranged on the end of the first sound insulation sleeve away from the mounting seat.

3. A noise reduction protection device for a rock drill according to claim 2, characterized in that: The sound insulation chamber is filled with a honeycomb-shaped sound insulation board, a plurality of through holes are opened on the side wall of the sound insulation board, and the through holes are filled with sound-absorbing parts.

4. A noise reduction and protection device for a rock drill according to claim 2, characterized in that: The sealing member is an annular air bag body arranged on the end of the sound insulation member.

5. A noise reduction and protection device for a rock drill according to claim 2, characterized in that: The shrinking assembly comprises a mounting ring sleeved on the first sound insulation sleeve, a plurality of guide rods are arranged around the mounting ring, and the guide rods are sleeved with guide sleeves connected with the mounting seat.

6. A noise reduction and protection device for a rock drill according to claim 5, characterized in that: A limit spring connected to the guide rod is arranged in the guide sleeve.

7. A noise reduction and protection device for a rock drill according to claim 2, characterized in that: The outer walls of the first sound insulation sleeve and the second sound insulation sleeve are both provided with an annular pleated structure.

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