Rotary excavating drill bit cleaning device and rotary excavating drill bit with same
By setting up a cleaning device for lower push plates and pull rods in the cavity of the rotary drill bit, the problem of difficulty in cleaning the adhered soil is solved, reducing drill bit wear and noise, and improving construction efficiency.
Patent Information
- Application Number
- CN202421748859.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-23
AI Technical Summary
When the rotary drilling rig drilling into the clay soil strata, it is difficult to clean the adhered soil, resulting in faster wear of the drill bit, high noise, low cleaning efficiency, and affecting construction efficiency.
A rotary drill bit cleaning device is designed, which is arranged in the drill bit cavity, including a push-down plate and a pull-down rod member. By opening the opening and closing baffle, the pull-down rod member drives the push-down plate to move downward to clean the soil in the cavity.
It effectively reduces drill bit wear and noise, improves cleaning efficiency and hole formation quality, and ensures the normal progress of construction.
Smart Images
Figure CN222848180U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of rotary drilling rig accessories, in particular to a rotary drilling drill bit cleaning device and a rotary drilling drill bit provided with the device. Background Art
[0002] Bored piles are a common type of pile foundation engineering, and are widely used in various construction projects. The rotary drilling rig uses a rotating drill bit to cut the soil, collect the soil in the cavity of the drill bit, lift it up, open the cavity through the opening and closing baffle at the bottom, and pour out the soil collected in the cavity of the drill bit. Repeat the above operation until the specified elevation is reached. However, since the rotary drilling rig often passes through multiple strata with different conditions during the drilling process, when the rotary drilling rig drills into a stratum composed of clay soil, clay soil often adheres to the cavity of the drill bit. The construction site usually uses a mechanical operator to vigorously rotate the drill bit, and use the impact force of the rotation to make the soil adhered to the cavity fall naturally. This approach has the following problems:
[0003] 1. Vigorously rotating the drill bit will accelerate the wear of the drill bit of the rotary drilling rig;
[0004] 2. The strong rotation of the drill bit produces a huge metal impact sound, which creates noise and causes trouble to the staff and surrounding residents;
[0005] 3. For adherent soil, it takes a lot of time to vigorously rotate the drill bit to shake off the soil in the drill bit cavity, and the cleaning effect is poor, which affects the working efficiency of the rotary drill bit and easily causes hole collapse. Utility Model Content
[0006] In order to solve the above technical problems, the utility model provides a rotary drill bit cleaning device and a rotary drill bit equipped with the device, which effectively solves the problems of drill bit wear, loud metal impact noise, and poor cleaning effect affecting drilling efficiency, and overcomes the shortcomings of the prior art.
[0007] The technical solution adopted by the utility model is: a rotary drilling bit cleaning device is arranged in the cavity of the rotary drilling bit, and the bottom of the cavity is provided with a split opening and closing baffle, including:
[0008] A push-down plate, disposed on the top of the cavity;
[0009] The pull-down rod is relatively arranged on both sides of the push-down plate, one end of which is connected to the push-down plate, and the other end of which is connected to the corresponding opening and closing baffle. When the opening and closing baffle is opened, the pull-down rod can be pulled to drive the push-down plate to move downward.
[0010] Furthermore, the lower pull rod comprises a connecting rod and a pulling rod, one end of the connecting rod is connected to the lower push plate, and the other end is hinged to the pulling rod, and one end of the pulling rod away from the connecting rod is hinged to the corresponding opening and closing baffle.
[0011] Furthermore, a hinge seat is provided on the opening and closing baffle, and one end of the pulling rod away from the connecting rod is hinged to the hinge seat.
[0012] Furthermore, a protrusion is provided at the bottom of the push-down plate.
[0013] Furthermore, a plurality of contact portions are provided in the circumference of the push-down plate, the contact portions are in contact with the inner wall of the cavity, and the contact portions are configured as elastic structures.
[0014] Furthermore, the contact portions are evenly distributed along the circumference of the push-down plate.
[0015] Furthermore, the contact portion is hemispherical, and the hemispherical surface contacts the inner wall of the cavity.
[0016] The utility model also provides a rotary drilling bit, comprising a cavity, in which the rotary drilling bit cleaning device as described above is arranged.
[0017] The advantages and positive effects of the utility model are: due to the adoption of the above technical scheme, the soil cleaning effect is guaranteed, the structure is simple, the operation is convenient, the wear of the rotary drilling bit is reduced, the noise interference is reduced, the working efficiency and hole quality of the rotary drilling bit are improved, and the normal progress of the construction is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The utility model is a schematic diagram of the overall installation of a rotary drilling drill bit cleaning device according to an embodiment of the present invention.
[0019] Figure 2 The utility model is a schematic diagram of the overall structure of a rotary drilling drill bit cleaning device according to an embodiment of the present invention.
[0020] Figure 3 The utility model is a bottom view of a push plate of a rotary drilling bit cleaning device according to an embodiment of the utility model.
[0021] In the figure:
[0022] 1. Cavity 2. Opening and closing baffle 3. Push-down plate
[0023] 4. Connecting rod 5. Pull rod 6. Articulated seat
[0024] 7. Raised part 8. Contact part DETAILED DESCRIPTION
[0025] The embodiment of the utility model provides a rotary drilling drill bit cleaning device, and the embodiment of the utility model is described below in conjunction with the accompanying drawings.
[0026] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "set" and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood by specific circumstances.
[0027] like Figure 1 and Figure 2 As shown, an embodiment of the utility model is a rotary drilling bit cleaning device, which is arranged in a cavity 1 of a rotary drilling bit, and the cavity 1 of the rotary drilling bit is used to store the soil excavated by the rotary drilling bit. A split opening and closing baffle 2 is provided at the bottom of the cavity 1, and holes are reserved on the opening and closing baffle 2, which are not shown in the figure. The soil cut by the rotary drilling bit enters the cavity 1 through the reserved holes on the opening and closing baffle 2 for storage. The opening and closing baffle 2 is opened regularly to clean the soil in the cavity 1. The structure and connection method of the cavity 1 and the opening and closing baffle 2 are all existing structures, which will not be described in detail here. The cleaning device includes a lower push plate 3 and a lower pull rod, the lower push plate 3 is arranged at the top of the cavity 1, and the lower pull rod is relatively arranged on both sides of the lower push plate 3, one end is connected to the lower push plate 3, and the other end is connected to the corresponding opening and closing baffle 2. Each opening and closing baffle 2 is correspondingly connected to a lower pull rod. When the soil in the cavity 1 needs to be cleaned, the two opening and closing baffles 2 are opened at the same time, and the opening and closing baffles 2 pull the corresponding pull-down rods, and the pull-down rods drive the push-down plate 3 to move downward to push the soil in the cavity 1 out.
[0028] Specifically, the lower pull rod includes a connecting rod 4 and a pulling rod 5. One end of the connecting rod 4 is connected to the lower push plate 3, and the other end is hinged to the pulling rod 5. The end of the pulling rod 5 away from the connecting rod 4 is hinged to the corresponding opening and closing baffle 2. There is no restriction on the cross-sectional shape of the connecting rod 4 and the pulling rod 5, and they can be round tubes or square tubes. The connecting rod 4 is fixedly connected to the bottom of the lower push plate 3. Since the cavity 1 will rotate with the height of the drill bit during the rotary drilling process, in order to avoid the hinged ends of the connecting rod 4 and the pulling rod 5 from shaking violently due to lack of support, the end of the pulling rod 5 close to the connecting rod 4 is tilted toward the inner wall of the cavity 1, so that the hinged ends of the pulling rod 5 and the connecting rod 4 lean against the inner wall of the cavity 1.
[0029] Preferably, the opening and closing baffle 2 is provided with a hinge seat 6, and the end of the pull rod 5 away from the connecting rod 4 is hinged to the hinge seat 6. The hinge seat 6 is fixedly connected to the opening and closing baffle 2. There is a certain distance between the hinge seat 6 and the inner wall of the cavity 1, so that the pull rod 5 is inclined toward the inner wall of the cavity 1.
[0030] Preferably, a protrusion 7 is provided at the bottom of the lower push plate 3. In order to prevent the soil from adhering to the bottom of the lower push plate 3 when the lower push plate 3 pushes the soil downward, a protrusion 7 is fixed at the bottom of the lower push plate 3. The specific shape of the protrusion 7 is not limited, and it can be circular or elliptical. The size of the protrusion 7 is not limited, and it can be the same size or different sizes. There are multiple protrusions 7, which are arranged at the bottom of the lower push plate 3.
[0031] Preferably, Figure 3 As shown, the lower push plate 3 is provided with a plurality of contact portions 8 in the circumference thereof, and the contact portions 8 are in contact with the inner wall of the cavity 1, and the contact portions 8 are elastic structures. In order to prevent the lower push plate 3 from rocking back and forth in the cavity 1 and colliding with the cavity 1 during the rotary drilling process of the drill bit, a plurality of contact portions 8 are provided in the circumference thereof, and the contact portions 8 are in contact with and abut against the inner wall of the cavity 1, so as to prevent the lower push plate 3 from directly colliding with the inner wall of the cavity 1. The contact portions 8 are elastic structures, and can play a buffering role during the collision process. Moreover, when the lower push plate 3 moves downward, since the contact portions 8 are elastic, the lower push plate 3 will not be engaged with the inner wall of the cavity 1, and will not affect the lower push plate 3 from pushing the soil downward.
[0032] Preferably, the contact portions 8 are evenly distributed along the circumference of the push-down plate 3 .
[0033] Specifically, the contact portion 8 is hemispherical, and the hemispherical surface contacts the inner wall of the cavity 1. The diameter of the hemispherical shape is less than or equal to the thickness of the lower push plate. The hemispherical non-spherical surface is fixedly connected to the circumference of the lower push plate 3, and the hemispherical surface contacts the inner wall of the cavity 1, which reduces the contact area with the inner wall of the cavity 1. When the lower push plate 3 moves downward, the friction force of the lower push plate 3 in the circumference is reduced, which is more conducive to the downward movement of the lower push plate 3. In some embodiments, the contact portion 8 is a hemispherical hard rubber ball. The non-spherical surface of the rubber ball is bonded to the circumference of the lower push plate 3, and the spherical surface of the rubber ball contacts and resists the inner wall of the cavity 1, which can not only ensure that the lower push plate 3 plays a buffering role when colliding with the inner wall of the cavity 1, but also ensure that when the lower push plate 3 moves downward, it will not generate a large friction with the inner wall of the cavity 1 to cause a jam.
[0034] A rotary drilling bit comprises a cavity 1, in which the rotary drilling bit cleaning device as described above is installed.
[0035] Embodiment: A rotary drill bit cleaning device is arranged in a cavity 1 of a rotary drill bit, and an opening and closing baffle 2 is installed at the bottom of the cavity 1. The cleaning device includes a lower push plate 3 and a lower pull rod. The lower push plate 3 is arranged at the top of the cavity 1. The lower pull rod is relatively arranged on both sides of the lower push plate 3, one end of which is connected to the lower push plate 3, and the other end is connected to the corresponding opening and closing baffle 2. Each opening and closing baffle 2 is connected to a corresponding lower pull rod. The lower pull rod includes a connecting rod 4 and a pulling rod 5. One end of the connecting rod 4 is welded and fixed to the bottom of the lower push plate 3, and the other end is hinged to the pulling rod 5. The end of the pulling rod 5 away from the connecting rod 4 is hinged to the corresponding opening and closing baffle 2. A hinge seat 6 is welded on the opening and closing baffle 2, and the end of the pulling rod 5 away from the connecting rod 4 is hinged to the hinge seat 6. There is a certain distance between the hinge seat 6 and the inner wall of the cavity 1, so that the pull rod 5 is tilted toward the inner wall of the cavity 1, and the hinged ends of the pull rod 5 and the connecting rod 4 lean against the inner wall of the cavity 1. A plurality of circular protrusions 7 of different sizes are welded to the bottom of the lower push plate 3. A plurality of hemispherical contact portions 8 are bonded to the circumference of the lower push plate 3, specifically semicircular hard rubber balls, with a diameter equal to the thickness of the lower push plate 3. The aspherical surface of the rubber ball is bonded to the circumference of the lower push plate 3, and the spherical surface of the rubber ball contacts and abuts against the inner wall of the cavity 1. The contact portions 8 are evenly distributed along the circumference of the lower push plate 3.
[0036] During installation, the two hinged seats 6 are symmetrically welded to the opening and closing baffles 2, the two connecting rods 4 are symmetrically welded to the bottom of the lower push plate 3, the welded lower push plate 3 is inserted into the cavity 1 of the drill bit, one end of the pull rod 5 is hinged at the bottom end of the connecting rod 4, and the other end of the pull rod 5 is hinged to the corresponding hinged seat 6.
[0037] When in use, the soil cut by the rotary drill bit enters the cavity 1 through the reserved holes on the opening and closing baffle 2 for storage. When cleaning is required, the rotary drill bit is lifted and the opening and closing baffle 2 is opened at the same time. The opening and closing baffle 2 pulls the corresponding pull-down rod, and the pull-down rod drives the push plate 3 to move downward to push the soil in the cavity 1 out.
[0038] The advantages and positive effects of the utility model are:
[0039] 1. By setting the push plate and the pull rod, the soil can be pushed out of the drill cavity when the opening and closing baffle is opened, which ensures the cleaning effect of the soil, has a simple structure and is easy to operate.
[0040] 2. There is no need to rotate the rotary drill bit vigorously, which reduces the wear of the rotary drill bit.
[0041] 3. It will not generate a lot of noise, reducing noise interference.
[0042] 4. There is no need to spend time and effort to rotate the drill bit to shake off the soil in the drill bit cavity, which improves the working efficiency and hole quality of the rotary drilling bit and ensures the normal progress of the construction.
[0043] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.
Claims
1. A rotary drilling bit cleaning device, arranged in a cavity of a rotary drilling bit, wherein a split opening and closing baffle is provided at the bottom of the cavity, characterized in that: include, A push-down plate, disposed on the top of the cavity; The pull-down rod is relatively arranged on both sides of the push-down plate, one end of which is connected to the push-down plate, and the other end of which is connected to the corresponding opening and closing baffle. When the opening and closing baffle is opened, the pull-down rod can be pulled to drive the push-down plate to move downward.
2. A rotary drilling drill bit cleaning device according to claim 1, characterized in that: The lower pull rod comprises a connecting rod and a pulling rod, one end of the connecting rod is connected to the lower push plate, and the other end is hinged to the pulling rod, and one end of the pulling rod away from the connecting rod is hinged to the corresponding opening and closing baffle.
3. A rotary drilling drill bit cleaning device according to claim 2, characterized in that: The opening and closing baffle is provided with a hinge seat, and one end of the pulling rod away from the connecting rod is hinged to the hinge seat.
4. A rotary drilling drill bit cleaning device according to any one of claims 1 to 3, characterized in that: A protrusion is provided at the bottom of the push-down plate.
5. A rotary drilling drill bit cleaning device according to claim 4, characterized in that: A plurality of contact portions are provided in the circumference of the push-down plate, the contact portions are in contact with the inner wall of the cavity, and the contact portions are configured as elastic structures.
6. A rotary drilling drill bit cleaning device according to claim 5, characterized in that: The contact portions are evenly distributed along the circumference of the push-down plate.
7. A rotary drilling drill bit cleaning device according to claim 5 or 6, characterized in that: The contact portion is hemispherical, and the spherical surface of the hemispherical portion contacts the inner wall of the cavity.
8. A rotary drilling drill bit, comprising a cavity, characterized in that: A rotary drill bit cleaning device as described in any one of claims 1-7 is arranged in the cavity.