Gravity rotary excavating drilling bucket

Abstract

The utility model relates to the technical field of rotary drilling, in particular to a gravity rotary drilling bucket, which comprises a gravity rotary drilling bucket body, a drilling bucket cavity is arranged in the gravity rotary drilling bucket body, a gravity part capable of adjusting weight is arranged in the drilling bucket cavity, and the gravity rotary drilling bucket body is connected with the gravity part. The gravity part capable of adjusting the weight is arranged in the drilling bucket cavity, so that the weight of the rotary excavating drilling bucket is increased to a certain extent, the downward pressure is increased, the rock breaking and downward excavating efficiency is improved, and the problem that the main downward pressure of the drilling bucket comes from the force of an oil cylinder of a rotary excavating drilling machine in the actual use of an existing rotary excavating drilling bucket is solved. And when a rock layer with high hardness is encountered, the drilling bucket is not ideal in downward digging rock breaking, low in efficiency and incapable of digging due to insufficient downward pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary drilling, in particular to a gravity rotary drilling bucket. Background Art

[0002] The rotary drill is a versatile tool that has its scope of application in different engineering environments. The rotary drill is widely used in foundation engineering, such as buildings, bridges, long tunnels, etc. The rotary drill can drill deep holes as far as 70 meters for foundation reinforcement and treatment. At the same time, the rotary drill has a strong excavation ability and is suitable for projects that require a lot of excavation, such as foundation pit-expansion, emergency treatment, earthwork construction and other fields. The rotary drill can drill geological environments such as grouting soil, sandy strata and karst rock strata. In addition, the rotary drill can also play an important role in water conservancy projects, such as the construction of dams, docks, and vertical and horizontal tunnels. For the needs of high-precision rock reinforcement or changing the direction of water flow, the rotary drill is also a very useful tool. In general, as an indispensable tool in modern foundation engineering construction, the application scope and role of the rotary drill are very diverse.

[0003] The Chinese patent with the announcement number CN217501566U discloses a rotary drilling bucket, in which a buffer strip is arranged on the outer side of the bucket wall to reduce the damage to the concrete retaining wall. However, in actual use, the main downward pressure of the bucket comes from the force of the rotary drilling rig's own oil cylinder. When encountering a hard rock layer, the insufficient downward pressure makes the bucket unable to dig and break the rock, resulting in low efficiency and failure to dig.

[0004] Although some existing technical solutions increase the weight of the rotary drill bucket by adding a counterweight, such as the Chinese patent with announcement number CN203701991U which discloses a drill bucket and a rotary drilling rig, in which the operating efficiency is improved by adding an external configuration block and a spring on the top of the rotary drill bucket, this external method has natural defects. Its specific size is restricted by the connection between the rotary drill bucket and the drill rod, and its length cannot exceed the length of the connecting head. Therefore, the weight of the counterweight block is often from tens of kilograms to one or two hundred kilograms, which cannot further improve the rock breaking efficiency in some more complex scenarios. Utility Model Content

[0005] In view of the above problems, the utility model provides a gravity rotary drilling bucket.

[0006] The adopted technical solution is a gravity rotary drilling bucket, comprising a gravity rotary drilling bucket body, wherein a drilling bucket cavity is arranged in the gravity rotary drilling bucket body, wherein a gravity part capable of adjusting weight is arranged in the drilling bucket cavity.

[0007] Optionally, a transverse plate is provided in the drilling bucket cavity, and the transverse plate divides the drilling bucket cavity into two parts, an upper part being a gravity part, and a lower part being a material holding cavity.

[0008] Optionally, the gravity part is filled with a counterweight material.

[0009] Optionally, the top of the gravity part is provided with an inlet and outlet for adding and discharging counterweight materials.

[0010] Optionally, a connecting head is provided on the top of the gravity rotary drilling bucket body, and is connected to the drill rod through a pin hole on the connecting head.

[0011] Optionally, a seamless pipe is further provided in the gravity portion, and the seamless pipe is vertically arranged.

[0012] Optionally, one end of the seamless pipe passes through the transverse plate and is inserted into the material holding cavity, and the other end of the seamless pipe passes through the top of the gravity rotary drilling bucket body.

[0013] Optionally, wear-resistant strips are provided on the outer periphery of the gravity rotary drilling bucket body.

[0014] Optionally, bucket teeth are provided at the bottom opening of the gravity rotary drilling bucket body.

[0015] The benefits of the utility model are:

[0016] On the one hand, a gravity part capable of adjusting weight is provided in the drilling bucket cavity, and the weight of the gravity part can be adjusted through the inlet and outlet ports, thereby increasing the weight of the rotary drilling bucket to a certain extent, thereby increasing the downward pressure and improving the rock breaking and digging efficiency. On the other hand, by providing a seamless pipe, the air generated during the rotary drilling process can be introduced from the material cavity to the rear for processing, thereby solving the problem that the main downward pressure of the existing rotary drilling bucket in actual use comes from the force of the rotary drilling rig's own oil cylinder. When encountering a rock layer with high hardness, the insufficient downward pressure makes the drilling bucket unable to dig and break the rock, low efficiency, and unable to dig. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the connection structure between a gravity rotary drilling bucket and an engineering vehicle;

[0018] Figure 2 It is a schematic diagram of a gravity rotary drilling bucket structure;

[0019] Figure 3 This is a schematic diagram of the gravity rotary drilling bucket structure from another angle;

[0020] Figure 4 This is a schematic diagram of the top structure of a gravity rotary drilling bucket;

[0021] Figure 5 The present invention is a schematic diagram of the internal structure of a gravity rotary drilling bucket.

[0022] The accompanying drawings are numeraled as follows: 1 is an engineering vehicle, 2 is a drill rod, 3 is a power head, 4 is a gravity rotary drilling bucket body, 5 is a drill bucket tooth, 6 is a wear-resistant strip, 7 is a material holding chamber, 8 is a cross plate, 10 is a connecting head, 11 is a seamless pipe, 12 is a material inlet and outlet, and 13 is a gravity part. DETAILED DESCRIPTION

[0023] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0024] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0025] like Figures 1 to 5 As shown, a gravity rotary drilling bucket comprises a gravity rotary drilling bucket body 4, a drill rod 2 is connected to the top of the gravity rotary drilling bucket body 4, and the drill rod 2 is connected to the engineering vehicle 1 through a power head 3, wherein a drill bucket cavity is arranged in the gravity rotary drilling bucket body 4, and a gravity part 13 capable of adjusting weight is arranged in the drill bucket cavity.

[0026] The purpose of this design is to increase the weight of the rotary drilling bucket to a certain extent by arranging a gravity part capable of adjusting the weight in the drilling bucket cavity, thereby increasing the downward pressure and improving the rock breaking and digging efficiency, and solving the problem that in actual use of the existing rotary drilling bucket, the main downward pressure of the drilling bucket comes from the force of the rotary drilling rig's own oil cylinder. When encountering a hard rock layer, the insufficient downward pressure makes the drilling bucket unable to dig and break the rock, low efficiency, and unable to dig.

[0027] In this embodiment, a specific setting method of the gravity part is provided, wherein a transverse plate 8 is provided in the drilling bucket cavity, and the transverse plate 8 divides the drilling bucket cavity into two parts, the upper part of which is the gravity part 13, and the lower part is the material holding cavity 7, and the gravity part 13 is filled with iron sand.

[0028] The purpose of this design is to divide the top of the drill bucket cavity into a gravity part through a metal cross plate, so that the center of gravity of the entire rotary drilling bucket moves upward to facilitate rotary drilling. At the same time, the gravity part is filled with counterweight materials such as iron sand to adjust the weight of the gravity part.

[0029] It should be pointed out that there are many types of fillers to choose from, and on-site construction personnel can choose appropriate fillers according to actual needs. At the same time, although this technical solution reduces the material space in the drill bucket cavity to a certain extent, it can greatly increase the weight of the rotary drilling bucket.

[0030] Furthermore, compared with the technology provided by the Chinese patent with announcement number CN203701991U, it adopts an external method, occupies the space above the rotary drilling bucket, and the outer size of the counterweight block cannot be larger than the outer diameter of the drilling bucket itself, so the overall size of the counterweight block is very limited, and it cannot effectively increase the overall weight of the drilling bucket. The technical solution provided in this embodiment builds the gravity part into the rotary drilling bucket. Although a part of the drilling bucket cavity space is sacrificed, the rotary drilling bucket can be made longer to compensate for the loss of space in the specific implementation. Moreover, after there is no space limitation, the total weight increase after the gravity part is filled with counterweight material can reach hundreds or even thousands of kilograms, and the weight increase is much greater than the external technical solution.

[0031] In this embodiment, a material inlet and outlet 12 for adding and discharging counterweight material is provided at the top of the gravity portion 13 .

[0032] The purpose of this design is to allow on-site construction workers to add appropriate weights of counterweight materials according to the needs of the construction soil and rock layers, thereby increasing the weight of the gravity rotary drilling bucket.

[0033] It should be pointed out that in specific use, those skilled in the art can set the positions of the inlet and outlet ports at appropriate positions according to actual needs.

[0034] In this embodiment, a specific connection method between a gravity rotary drilling bucket body and a drill rod is provided, wherein a connecting head 10 is provided on the top of the gravity rotary drilling bucket body 4, and is connected to the drill rod 2 through a pin hole 15 on the connecting head 10.

[0035] In this embodiment, a seamless pipe 11 is further provided in the gravity portion 13 , and the seamless pipe 11 is vertically arranged, one end of the seamless pipe 11 passes through the transverse plate 8 and is inserted into the material holding cavity 7 , and the other end of the seamless pipe 11 passes through the top of the gravity rotary drilling bucket body 4 .

[0036] The purpose of this design is that during rotary drilling, air, soil and other contents will accumulate in the material chamber of the rotary drilling bucket. These contents will be discharged to the rear of the gravity rotary drilling bucket through the seamless pipe via the gravity part, so that the gravity rotary drilling bucket can carry out digging operations for a long time. There can be many shapes of seamless pipes, and technical personnel in this field can choose square seamless pipes, round seamless pipes, etc.

[0037] In this embodiment, wear-resistant strips 6 are arranged on the outer periphery of the gravity rotary drilling bucket body 4 .

[0038] The purpose of such a design is that by providing the wear-resistant strips, and the wear-resistant strips are in a spiral shape, the soil can be pushed backwards during rotary drilling.

[0039] In this embodiment, a bucket tooth 5 is provided at the bottom opening of the gravity rotary drilling bucket body 4 .

[0040] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gravity rotary drilling bucket, comprising a gravity rotary drilling bucket body (4), wherein a drilling bucket cavity is arranged in the gravity rotary drilling bucket body (4), characterized in that: A gravity portion (13) capable of adjusting weight is arranged in the drilling bucket cavity; A transverse plate (8) is arranged in the drilling bucket cavity, and the transverse plate (8) divides the drilling bucket cavity into two parts, the upper part is the gravity part (13), and the lower part is the material storage cavity (7); The gravity portion (13) is filled with a counterweight material; The top of the gravity part (13) is provided with an inlet and outlet (12) for adding and discharging counterweight material; A seamless pipe (11) is also arranged in the gravity portion (13), and the seamless pipe (11) is arranged vertically.

2. A gravity rotary drilling bucket according to claim 1, characterized in that: The counterweight material is iron sand.

3. A gravity rotary drilling bucket according to claim 1, characterized in that: One end of the seamless pipe (11) passes through the transverse plate (8) and is inserted into the material holding cavity (7), and the other end of the seamless pipe (11) passes through the top of the gravity rotary drilling bucket body (4).

4. A gravity rotary drilling bucket according to claim 1, characterized in that: The outer periphery of the gravity rotary drilling bucket body (4) is provided with wear-resistant strips (6).

5. The gravity rotary drilling bucket according to claim 1, characterized in that: Drilling bucket teeth (5) are provided at the bottom opening of the gravity rotary drilling bucket body (4).

6. A gravity rotary drilling bucket according to claim 1, characterized in that: A connecting head (10) is provided on the top of the gravity rotary drilling bucket body (4), and is connected to the drill rod (2) via a pin hole (15) on the connecting head (10).

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