Noise reduction device for power head of rotary drilling rig

Abstract

A noise reduction device for a power head of a rotary drilling rig comprises the power head and a noise reduction covering box installed on the power head, the noise reduction covering box surrounds the top face, the bottom face and the side faces of the power head, a notch is formed in the top face of the noise reduction covering box, and a first sound insulation part is installed on the inner wall of the top face of the noise reduction covering box along the edge of the notch. The first sound insulation part extends from the inner wall of the top face of the noise reduction covering box and is aligned to the position close to the outer edge of the second flange of the power head damping device. The noise reduction device for the power head of the rotary drilling rig is good in noise sealing performance, capable of effectively reducing noise and capable of meeting construction requirements at night.

Description

Technical Field

[0001] The utility model relates to a noise reduction device for a power head of a rotary drilling rig, belonging to the technical field of rotary drilling construction. Background Art

[0002] The rotary drilling rig is working near urban residential areas. Due to its high work intensity, the noise it generates is relatively high. When it is working, it will affect the environment of residents to a certain extent, especially at night, which will disturb the normal rest of residents. Therefore, construction at night will be limited by time, affecting the progress of construction and reducing the efficiency of construction. Moreover, the power head is the key component that generates noise. The current power head noise reduction device can only reduce the surrounding noise, and the noise reduction sealing is relatively poor. Utility Model Content

[0003] In view of the above technical deficiencies, the utility model provides a noise reduction device for a rotary drilling rig power head. The device has good noise sealing performance and can effectively reduce noise, meeting the requirements of urban residents for day and night construction.

[0004] The technical solution adopted by the present invention is: to provide a noise reduction device for a rotary drilling rig power head, comprising a power head and a noise reduction covering box installed on the power head, wherein the noise reduction covering box surrounds the top surface, bottom surface and side surface of the power head, and the top surface of the noise reduction covering box is provided with a notch, and a first sound insulation member is installed along the edge of the notch on the inner wall of the top surface of the noise reduction covering box, and the first sound insulation member extends from the inner wall of the top surface of the noise reduction covering box and is aligned to the second outer edge of the flange of the power head shock absorbing device.

[0005] Furthermore, the first sound insulation component is aligned to 5mm-10mm from the second outer edge of the flange of the power head shock absorbing device.

[0006] Furthermore, the first sound insulation member is an annular sound-absorbing cotton.

[0007] Further, the noise reduction cover box includes a first noise reduction cover and a second noise reduction cover symmetrically installed on both sides of the power head, a third noise reduction cover arranged on the front side of the power head, and a fourth noise reduction cover and a fifth noise reduction cover symmetrically arranged on the upper and lower sides of the power head;

[0008] The first noise reduction cover, the second noise reduction cover, the fourth noise reduction cover and the fifth noise reduction cover are connected in a closed loop, the top surface and the bottom surface of the third noise reduction cover are respectively connected to the fourth noise reduction cover and the fifth noise reduction cover, the side surface of the third noise reduction cover covers the front of the power head, and the two ends are respectively connected to the first noise reduction cover and the second noise reduction cover.

[0009] Furthermore, the first noise reduction cover, the second noise reduction cover, the third noise reduction cover, the fourth noise reduction cover and the fifth noise reduction cover all include a steel plate and a second sound insulation member provided on the inner side wall of the steel plate.

[0010] Furthermore, the steel plate has a thickness of 3 mm and a bent edge.

[0011] Furthermore, the second sound insulation member may be sound insulation cotton with a thickness of 20-30 mm.

[0012] Furthermore, the first noise reduction cover, the second noise reduction cover, the third noise reduction cover, the fourth noise reduction cover and the fifth noise reduction cover are all provided with hanging ears.

[0013] The beneficial effects of the present invention are embodied in:

[0014] 1. The utility model of the noise reduction device for the power head of the rotary drilling rig is sealed by noise reduction covers around the power head and above and below, and annular sound-absorbing cotton is installed to achieve secondary noise reduction around the power head, thereby reducing the radiation of noise in the upper and lower directions of the power head and the drill rod. The noise reduction effect is strong and can meet the requirements of urban residents for construction day and night.

[0015] 2. The noise reduction cover of the noise reduction device for the power head of the rotary drilling rig of the utility model adopts a 3mm thick folded steel plate, which has a high structural strength and a light weight, and can reduce the noise caused by the steel plate to produce a large vibration noise.

[0016] 3. The sound insulation member of the noise reduction device for the power head of the rotary drilling rig of the utility model adopts honeycomb sound insulation cotton with a thickness of 20-30mm, which has a good noise reduction effect and effectively reduces noise pollution.

[0017] 4. The noise reduction device for the power head of the rotary drilling rig of the utility model has a simple structural design, is strong and reliable, has a modular structural design, is easy to process and weld, and each noise reduction cover is designed with a lifting lug, which is convenient for disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an axonometric diagram of an embodiment of the utility model.

[0019] Figure 2 It is a bottom-up axonometric view of an embodiment of the utility model.

[0020] Figure 3 The rear view axis side of the utility model embodiment Figure 1 .

[0021] Figure 4 The rear axonometric measurement of the embodiment of the utility model Figure 2 .

[0022] Figure 5It is an axonometric view of the power head of an embodiment of the utility model.

[0023] In the figure, 1, power head; 101, flange 2 of power head shock absorber; 102, fixing seat 1; 103, fixing seat 2; 201, first noise reduction cover; 202, second noise reduction cover; 203, third noise reduction cover; 204, fourth noise reduction cover; 205, fifth noise reduction cover; 206, connecting plate; 207, first sound insulation; 208, lifting ear; 209, notch; DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Reference Figures 1 to 5 A noise reduction device for a power head of a rotary drilling rig includes a power head 1 and a noise reduction cover box covering the upper and lower parts and the sides of the power head, and the noise reduction cover box includes a first noise reduction cover 201, a second noise reduction cover 202, a third noise reduction cover 203, a fourth noise reduction cover 204, a fifth noise reduction cover 205, a connecting plate 206, and a first sound insulation member 207. The first noise reduction cover 201 and the second noise reduction cover 202 are respectively installed on both sides of the power head, the fourth noise reduction cover 204 and the fifth noise reduction cover 205 are respectively arranged on the top and bottom surfaces of the power head 1, and the third noise reduction cover 203 surrounds the front of the power head 1; specifically, the first noise reduction cover 201 is connected to the upper and lower fixing seats 102 on the left rear side of the power head 1, and is connected to the fixing seat 2 103 in the middle of the left side plate of the power head 1, and the second noise reduction cover 202 is connected to the upper and lower fixing seats 102 on the right rear side of the power head 1, and is connected to the fixing seat 2 103 in the middle of the right side plate of the power head. The third noise reduction cover 203 is connected to the middle fixing seat 2 103 of the left and right plates of the power head 1, the fourth noise reduction cover 204 is connected to the upper end faces of the first noise reduction cover 201 and the second noise reduction cover 202, the fifth noise reduction cover 205 is connected to the lower end faces of the first noise reduction cover 201 and the second noise reduction cover 202, the third noise reduction cover 203 is connected to the fourth noise reduction cover 204 and the fifth noise reduction cover 205 through the connecting plate 206; a notch 209 is provided at the center of the connection between the third noise reduction cover 203 and the fourth noise reduction cover 204. The noise covering box realizes full coverage of the power head and can effectively reduce construction noise;

[0026] The first sound insulation member 207 is pasted on the inner wall of the connection between the third noise reduction cover 203 and the fourth noise reduction cover 204, and extends inward around the slot 209, and is aligned to the outer edge of the second flange 101 of the shock absorber device of the power head 1. Preferably, the first sound insulation member 207 is an annular sound-absorbing cotton, which is pasted on the inner side of the upper end of the third noise reduction cover 203 and is aligned to the outer edge of the second flange 101 of the shock absorber device of the power head 1 with a gap of 5mm-10mm, which can play a role of secondary noise reduction, thereby further improving the noise reduction sealing and improving the noise reduction performance.

[0027] The first noise reduction cover 201, the second noise reduction cover 202, the third noise reduction cover 203, the fourth noise reduction cover 204 and the fifth noise reduction cover 205 are all made of 3mm steel plates and are bent at the edges to increase strength, such as the bent edge 2021 of the second noise reduction cover and the bent edge 2051 of the fifth noise reduction cover. The selection of steel plate thickness and the edge folding structure can reduce the large vibration noise of the steel plate caused by noise, avoid the formation of drum surfaces due to thin steel plates, resulting in increased noise, and increase in cost and weight due to excessively thick steel plates.

[0028] The inner sides of the steel plates of the first noise reduction cover 201, the second noise reduction cover 202, the third noise reduction cover 203, the fourth noise reduction cover 204 and the fifth noise reduction cover 205 can be pasted with sound insulation cotton with a thickness of 20-30 mm. The sponge structure is honeycomb-shaped, which is conducive to the continuous refraction of noise on the concave and convex surface to reduce the sound propagation. Sound insulation cotton of this thickness has an effective noise reduction effect.

[0029] To facilitate lifting and assembly, ears 208 are provided on the first noise reduction cover 201, the second noise reduction cover 202, the third noise reduction cover 203, the fourth noise reduction cover 204, and the fifth noise reduction cover 205. The arrangement of the ears 208 on each noise reduction cover is symmetrical with the center of gravity of each noise cover as the center, and the ears 208 are symmetrically welded on both sides.

[0030] The first noise reduction cover 201, the second noise reduction cover 202, the third noise reduction cover 203, the fourth noise reduction cover 204, and the fifth noise reduction cover 205 all have wear-resistant rubber strips added at positions corresponding to the hydraulic pipelines and accumulators and near the drill pipe to avoid damage to the power head and the drill pipe.

[0031] The first noise reduction cover 201 has a reserved hole 2011 at a position corresponding to the accumulator; the fourth noise reduction cover 204 has a reserved hydraulic wire hole 2041 to facilitate overall assembly and avoid interference problems.

[0032] The contents of the specific implementation methods of the utility model are merely an enumeration of the implementation forms of the utility model concept. The protection scope of the utility model should not be regarded as limited to the specific forms described in the embodiments. The protection scope of the utility model also extends to the equivalent technical means that can be thought of by technical personnel in this field based on the concept of the utility model.

Claims

1. A noise reduction device for a rotary drilling rig power head, characterized in that: The invention comprises a power head (1) and a noise reduction cover box installed on the power head (1), wherein the noise reduction cover box surrounds the top surface, the bottom surface and the side surface of the power head (1), the top surface of the noise reduction cover box is provided with a notch, and a first sound insulation member (207) is installed along the edge of the notch on the inner wall of the top surface of the noise reduction cover box, and the first sound insulation member (207) extends from the inner wall of the top surface of the noise reduction cover box and is aligned with the outer edge of the second flange (101) of the power head shock absorbing device.

2. The noise reduction device for a rotary drilling rig power head according to claim 1, characterized in that: The first sound insulation member (207) is aligned to the outer edge of the second flange (101) of the power head shock absorbing device at a distance of 5 mm to 10 mm.

3. The noise reduction device for a rotary drilling rig power head according to claim 1, characterized in that: The first sound insulation member (207) is an annular sound-absorbing cotton.

4. The noise reduction device for a rotary drilling rig power head according to claim 1, characterized in that: The noise reduction cover box comprises a first noise reduction cover (201) and a second noise reduction cover (202) symmetrically mounted on both sides of the power head (1), a third noise reduction cover (203) arranged on the front side of the power head (1), and a fourth noise reduction cover (204) and a fifth noise reduction cover (205) symmetrically arranged on the upper and lower sides of the power head (1); The first noise reduction cover (201), the second noise reduction cover (202), the fourth noise reduction cover (204) and the fifth noise reduction cover (205) are connected in a closed loop; the top surface and the bottom surface of the third noise reduction cover (203) are respectively connected to the fourth noise reduction cover (204) and the fifth noise reduction cover (205); the side surface of the third noise reduction cover (203) covers the front part of the power head (1), and the two ends of the side surface are respectively connected to the first noise reduction cover (201) and the second noise reduction cover (202).

5. The noise reduction device for a rotary drilling rig power head according to claim 4, characterized in that: The first noise reduction cover (201), the second noise reduction cover (202), the third noise reduction cover (203), the fourth noise reduction cover (204) and the fifth noise reduction cover (205) all comprise a steel plate and a second sound insulation member provided on the inner side wall of the steel plate.

6. The noise reduction device for the rotary drilling rig power head according to claim 5, characterized in that: The steel plate has a thickness of 3 mm and is bent at the edges.

7. The noise reduction device for a rotary drilling rig power head according to claim 5, characterized in that: The second sound insulation member may be sound insulation cotton with a thickness of 20mm-30mm.

8. The noise reduction device for a rotary drilling rig power head according to claim 4, characterized in that: The first noise reduction cover (201), the second noise reduction cover (202), the third noise reduction cover (203), the fourth noise reduction cover (204) and the fifth noise reduction cover (205) are all provided with hanging ears (208).

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