Noise reduction structure of rotary drilling machine

Abstract

The utility model discloses a noise reduction structure of a rotary drilling machine, belongs to the technical field of rotary drilling machines, and aims to solve the problems that soil in a barrel can be shaken down only when the drilling tool repeatedly rotates forwards and backwards and collides when the soil is adhered to the wall of the drilling tool, so that the generated noise is far higher than the noise generated when the machine drills down. The soil unloading device comprises a drilling barrel, three positioning holes are formed in the top end of the drilling barrel, a soil unloading mechanism is arranged in the drilling barrel and comprises a soil unloading plate, three guide columns and an annular disc, the soil unloading plate is located in the drilling barrel, and the annular disc is arranged in the soil unloading plate. The bottom ends of the guide columns are fixedly mounted at the top end of the soil unloading plate; the guide columns penetrate through the positioning holes; through the arrangement of the soil unloading mechanism, the soil unloading mechanism is pressed down by utilizing the power of the rotary drilling machine, the soil unloading mechanism pushes the soil in the drilling barrel to be unloaded out of the drilling barrel, and when the drilling barrel drills down next time, the soil unloading mechanism resets upwards under the action force of upward extrusion of the soil.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rotary excavator technical field, and specifically relates to a rotary excavator noise reduction structure. BACKGROUND

[0002] The rotary drilling rig is a kind of construction machinery suitable for hole-forming operation in building foundation engineering.It is mainly suitable for sand soil, cohesive soil, silty soil and other soil layer construction, and is widely applied in various foundation construction such as bored pile, continuous wall, foundation reinforcement, etc.

[0003] At present, after the rotary drilling rig is taken out, the soil viscosity is often adhered to the wall of the drilling rig, and the soil in the barrel can be shaken down only by repeated forward and reverse rotation collision of the drilling rig, so that the noise generated is much larger than the noise when the machine is drilling, which causes great disturbance to the residents around the construction.In addition, due to the difficulty in unloading soil, the rotary excavator operator dare not make the drilling rig too full, and the drilling rig can only drill to fill the drilling rig within 50% or even 30-40% each time, which greatly reduces the working efficiency of the rotary excavator.

[0004] Therefore, a rotary excavator noise reduction structure is needed to solve the problem that the soil viscosity is adhered to the wall of the drilling rig, and the soil in the barrel can be shaken down only by repeated forward and reverse rotation collision of the drilling rig, so that the noise generated is much larger than the noise when the machine is drilling, which causes great disturbance to the residents around the construction. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a rotary excavator noise reduction structure to solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a rotary excavator noise reduction structure, comprising a drill cylinder, three positioning holes are formed in the top end of the drill cylinder, and an unloading mechanism is arranged in the interior of the drill cylinder.

[0007] The unloading mechanism comprises an unloading plate, three guide columns and an annular disc, the unloading plate is located in the interior of the drill cylinder, the number of guide columns is three, the bottom end of the guide column is fixedly installed at the top end of the unloading plate, the guide column passes through the positioning hole, and the top end of the annular disc is provided with a through hole corresponding to the positioning hole, and the guide column movably passes through the through hole.

[0008] It should be noted in the scheme that external threads are formed on the outer surface of the guide column, the top end of the annular disc is provided with a first adjusting bolt, the bottom end of the annular disc is provided with a second adjusting bolt, and the first adjusting bolt and the second adjusting bolt are threadedly connected with the external threads.

[0009] Further worth mentioning is that the bottom end of the second adjusting bolt is fixedly provided with a rubber ring, and the guide column is movably arranged through the rubber ring.

[0010] Further need to be explained is that the shape of the soil unloading plate is circular, and the diameter of the soil unloading plate is smaller than the inner diameter of the drill cylinder.

[0011] The bottom end of the soil unloading plate is provided with a fixing bolt, and the soil unloading plate is fixed through the fixing bolt.

[0012] As a preferred embodiment, the bottom end of the soil unloading plate is provided with a circular hole groove, and the head of the fixing bolt is located in the circular hole groove.

[0013] As a preferred embodiment, the top end of the drill cylinder is provided with a mounting groove.

[0014] Compared with the prior art, the noise reduction structure of the rotary excavator provided by the utility model has at least the following beneficial effects:

[0015] (1) Through the setting of the soil unloading mechanism, the soil unloading mechanism pushes the soil in the drill cylinder out of the drill cylinder by using the power of the rotary excavator itself, and the soil unloading mechanism is reset upward under the action force of the soil when the drill cylinder drills next time.

[0016] (2) Through the setting of the external thread, the first adjusting bolt and the second adjusting bolt, the descending position of the soil unloading plate can be adjusted according to the height of the drill cylinder, the practicability is enhanced, and the rubber ring is arranged, so that the contact sound of the annular disc and the drill cylinder is reduced when the annular disc descends. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the overall structure of the utility model;

[0018] Figure 2 It is another perspective view of the structure of the utility model;

[0019] Figure 3 It is Figure 1 The enlarged structure schematic view of the A area in the middle.

[0020] In the figure: 1, drill cylinder; 2, positioning hole; 3, soil unloading plate; 4, guide column; 5, annular disc; 6, external thread; 7, first adjusting bolt; 8, second adjusting bolt; 9, rubber ring; 10, fixing bolt; 11, circular hole groove; 12, mounting groove. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0022] The implementation of the utility model will be described in detail in combination with specific examples.

[0023] In the drawings of the embodiments, the same or similar reference numerals correspond to the same or similar components; in the description of the utility model, it should be understood that if the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore, the terms describing the position relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0024] Referring to the drawings, a preferred embodiment provided by the utility model is shown.

[0025] The utility model aims at providing a kind of rotary excavator noise reduction structure that can reduce the noise of rotary excavator when dumping, improve dumping efficiency.The utility model is described in detail in combination with drawings and examples as follows for better understanding.

[0026] Example 1: the basic structure of noise reduction structure:

[0027] As shown in Figures 1 to 3 The utility model provides a kind of rotary excavator noise reduction structure. Including drill cylinder 1, three positioning holes 2 are set in the top end of drill cylinder 1, unloading mechanism is arranged in the inside of drill cylinder 1;

[0028] The unloading mechanism includes unloading plate 3, guide column 4 and annular disc 5, unloading plate 3 is located in the inside of drill cylinder 1, the shape of unloading plate 3 is circular, the diameter of unloading plate 3 is less than the inside diameter of drill cylinder 1, the number of guide column 4 is three, the bottom end of guide column 4 is fixedly installed on the top end of unloading plate 3, guide column 4 passes through positioning hole 2, the top end of annular disc 5 is provided with through hole corresponding to positioning hole 2, guide column 4 passes through through hole movably, when drill cylinder 1 needs to unload, the unloading mechanism is pressed down by using the power of rotary excavator, the unloading mechanism pushes the soil in drill cylinder 1 to unload drill cylinder 1, when drill cylinder 1 drills next time, the unloading mechanism is reset upward under the action force of soil.

[0029] The top end of drill cylinder 1 is provided with mounting groove 12, rotary excavator is prior art, specific structure and principle have been disclosed, and here is not repeated, drill cylinder 1 is installed with rotary excavator through mounting groove 12.

[0030] Embodiment 2: Design of external thread 6:

[0031] The outer surface of the guide column 4 is provided with an external thread 6, the top end of the annular disc 5 is provided with a first adjusting bolt 7, the bottom end of the annular disc 5 is provided with a second adjusting bolt 8, the first adjusting bolt 7 and the second adjusting bolt 8 are both in threaded connection with the external thread 6, and the external thread 6, the first adjusting bolt 7 and the second adjusting bolt 8 are arranged to facilitate the adjustment of the lowering position of the unloading plate 3 according to the height of the drill cylinder 1, thereby enhancing the practicability.

[0032] Embodiment 3: Function of rubber ring 9:

[0033] The bottom end of the second adjusting bolt 8 is fixedly provided with a rubber ring 9, and the guide column 4 passes through the rubber ring 9 movably. When the annular disc 5 is lowered, the rubber ring 9 is arranged to reduce the touching sound of the annular disc 5 and the drill cylinder 1.

[0034] Embodiment 4: Design and function of fixing bolt 10:

[0035] The bottom end of the unloading plate 3 is provided with a fixing bolt 10, and the unloading plate 3 is fixed through the fixing bolt 10 between the unloading plate 3 and the guide column 4. The fixing bolt 10 is arranged to facilitate the installation and dismounting of the unloading plate 3. The bottom end of the unloading plate 3 is provided with a circular hole groove 11, and the head of the fixing bolt 10 is located in the circular hole groove 11. The circular hole groove 11 is arranged to hide the fixing bolt 10.

[0036] Embodiment 5: Working principle of noise reduction structure:

[0037] When the drill cylinder 1 needs to unload soil, the unloading mechanism is pressed down by using the power of the rotary excavator, the unloading mechanism pushes the soil in the drill cylinder 1 out of the drill cylinder 1, and when the drill cylinder 1 is lowered next time, the unloading mechanism is reset upward under the extrusion force of the soil. When the unloading plate 3 is installed, the position of the annular disc 5 is adjusted according to the height of the drill cylinder 1, the annular disc 5 is limited through the cooperation of the first adjusting bolt 7 and the second adjusting bolt 8, and the practicability is enhanced.

[0038] Technical effects:

[0039] Through the above detailed description of the embodiments, first, through the arrangement of the unloading mechanism, the unloading mechanism is pressed down by using the power of the rotary excavator, the unloading mechanism pushes the soil in the drill cylinder 1 out of the drill cylinder 1, and when the drill cylinder 1 is lowered next time, the unloading mechanism is reset upward under the extrusion force of the soil.

[0040] Secondly, the external thread 6, the first adjusting bolt 7 and the second adjusting bolt 8 are arranged to facilitate the adjustment of the lowering position of the unloading plate 3 according to the height of the drill cylinder 1, thereby enhancing the practicability. The rubber ring 9 is arranged to reduce the touching sound of the annular disc 5 and the drill cylinder 1 when the annular disc 5 is lowered.

[0041] In summary, the rotary excavator noise reduction structure has the advantages of reasonable structure, perfect function, strong applicability, effective reduction of soil dumping noise, enhanced practicality and wide application prospect.

[0042] In the following, several embodiments of the present application will be described with reference to the drawings. For the purpose of clear illustration, many details of the embodiments will be described in the following description. However, it should be understood that these details should not be used to limit the present application. That is, in some embodiments of the present application, these details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in a simple schematic manner in the drawings.

[0043] In addition, in the present application, the description of "first", "second", etc. is only for the purpose of description, and does not mean to particularly indicate the order or sequence, nor to limit the present application. It is only to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0044] The above only describes some exemplary embodiments of the present application by way of illustration. It is needless to say that for ordinary skilled in the art, the described embodiments can be modified in various ways without deviating from the spirit and scope of the present application. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the protection scope of the claims of the present application.

Claims

1. A noise reduction structure for a rotary drilling rig, comprising a drill barrel (1), characterized in that, The top of the drill barrel (1) is provided with three positioning holes (2), and the inside of the drill barrel (1) is provided with a soil unloading mechanism; The soil unloading mechanism includes a soil unloading plate (3), guide columns (4) and an annular disc (5). The soil unloading plate (3) is located inside the drill barrel (1). There are three guide columns (4). The bottom end of the guide column (4) is fixedly installed on the top end of the soil unloading plate (3). The guide column (4) passes through the positioning hole (2). The top end of the annular disc (5) has a through hole corresponding to the positioning hole (2). The guide column (4) moves through the through hole.

2. The noise reduction structure for a rotary drilling rig according to claim 1, characterized in that: The outer surface of the guide post (4) is provided with an external thread (6), the top end of the annular disk (5) is provided with a first adjusting bolt (7), and the bottom end of the annular disk (5) is provided with a second adjusting bolt (8). The first adjusting bolt (7) and the second adjusting bolt (8) are both threadedly connected to the external thread (6).

3. The noise reduction structure for a rotary drilling rig according to claim 2, characterized in that: A rubber ring (9) is fixedly installed at the bottom end of the second adjusting bolt (8), and the guide post (4) moves through the rubber ring (9).

4. The noise reduction structure for a rotary drilling rig according to claim 3, characterized in that: The unloading plate (3) is circular in shape, and the diameter of the unloading plate (3) is smaller than the inner diameter of the drill barrel (1).

5. The noise reduction structure for a rotary drilling rig according to claim 4, characterized in that: The bottom end of the unloading plate (3) is provided with a fixing bolt (10), and the unloading plate (3) is fixed to the guide column (4) by the fixing bolt (10).

6. The noise reduction structure for a rotary drilling rig according to claim 5, characterized in that: The bottom end of the unloading plate (3) is provided with a circular hole groove (11), and the screw head of the fixing bolt (10) is located in the circular hole groove (11).

7. The noise reduction structure for a rotary drilling rig according to claim 1, characterized in that: The top end of the drill barrel (1) is provided with an installation groove (12).

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