Drill bit fisher of rotary drilling machine

Abstract

The utility model discloses a fisher for a drill bit of a rotary drilling machine, and relates to the technical field of fishing tools. Comprising a mounting cylinder, a sliding rod and a mounting ring, five sets of arc-shaped grooves are symmetrically formed in a second gear in a penetrating mode, a supporting column is arranged at the bottom end of the sliding rod, a clamping plate is arranged at one end of the sliding rod, a clamping jaw is rotationally arranged at the top end of the clamping plate, and an electric push rod is arranged on one side of the clamping plate. And an electromagnet is arranged in the mounting ring. According to the rotary drilling machine drill bit salvaging device, the electromagnet, the clamping plates, the clamping jaw and other components are arranged, the distance between the clamping plates is reduced, the rotary drilling machine drill bit needing to be salvaged can be clamped through the clamping plates and the protruding blocks, the electromagnet can be used for conducting magnetic adsorption on the rotary drilling machine drill bit, and when the electric push rod operates to push the clamping jaw, the clamping jaw can be clamped through the clamping plates and the protruding blocks. And the drill bit of the rotary drilling machine can be secondarily clamped by utilizing the clamping jaw, so that the clamping stability of the fisher on the drill bit of the rotary drilling machine is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fishing tools, in particular to a rotary drill bit fishing device. Background Technique

[0002] The rotary drill bit is a key component of a rotary drilling rig, mainly used for hole forming operations under different geological conditions. It cuts soil or rock by rotating and excavating to form holes of the required size and shape. The rotary drill bit fishing device is a tool designed specifically for rotary drilling rigs to fish for the drill bit when it accidentally falls into the hole. During the construction process, due to complex geological conditions or improper operation, the drill bit may be damaged or fall off, and at this time, the drill bit fishing device becomes particularly important.

[0003] Currently, during the use of existing drill bit fishing devices, most of them use a heavy weight and a strong magnet to lift and fish for the fallen rotary drill bit only by magnetic connection. The connection strength of the magnet is limited. During the process of towing the drill bit back, due to the resistance from the inner wall of the channel, if the drill bit is stuck tightly, it is not easy to fish out the drill bit. To solve this technical problem, the utility model proposes a rotary drill bit fishing device. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a rotary drill bit fishing device, which can effectively solve the problems mentioned in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A rotary drill bit fishing device includes an installation cylinder, a sliding rod, and an installation ring. A bearing is provided at the bottom end of the installation cylinder, a connecting shaft is provided inside the bearing, a second gear is provided at the bottom end of the connecting shaft, five arc-shaped grooves are symmetrically formed through the inside of the second gear, a support column is provided at the bottom end of the sliding rod, and the support column movably penetrates through the inside of the arc-shaped groove. One end of the sliding rod is provided with a clamping plate, convex blocks are provided on the inner side of the clamping plate, a clamping jaw is rotatably provided at the top end of the clamping plate, an electric push rod is provided on one side of the clamping plate, and an electromagnet is provided inside the installation ring.

[0007] Preferably, a combined cover is provided at the top end of the installation cylinder, and a connecting cylinder is provided at the top end of the combined cover.

[0008] Preferably, a motor is provided on the bottom inner wall of the installation cylinder, a first gear is provided at the output end of the motor, and the first gear is meshed with the second gear.

[0009] Preferably, a limiting shell is provided at the bottom end of the installation cylinder, and the sliding rod movably penetrates through the inside of the limiting shell.

[0010] Preferably, the clamping plate is an arc-shaped plate, the convex block is made of rubber material, and the jaw is a Z-shaped plate.

[0011] Preferably, a protective cylinder is provided at the bottom end of the mounting cylinder, and the protective cylinder is located outside the first gear and the second gear. The sliding rod movably penetrates through the inside of the protective cylinder. A protective shell is provided on the outside of the clamping plate, and the mounting ring is arranged at the bottom end of the protective cylinder.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, by providing components such as an electromagnet, a clamping plate and a jaw, when the second gear rotates using the bearing, the arc-shaped groove can slide to move the strut, adjusting the use position of each clamping plate at one end of the sliding rod below the mounting cylinder. By reducing the distance between each clamping plate, the clamping plate and the convex block can clamp the rotary drilling rig bit to be salvaged. The electromagnet can magnetically adsorb the rotary drilling rig bit. After the clamping plate clamps the rotary drilling rig bit, when the electric push rod operates to push the jaw, the jaw provided at the top end of the clamping plate tilts at an angle, and the jaw can be used to perform secondary clamping on the rotary drilling rig bit. By using the electromagnet, the clamping plate and the jaw in cooperation to clamp the rotary drilling rig bit multiple times, the stability of the clamping of the rotary drilling rig bit by the salvage device is effectively improved.

[0014] In the utility model, by providing components such as a motor and a limiting shell, through the meshing connection of the first gear and the second gear, when the motor runs forward and backward, the first gear can move the second gear to rotate forward and backward. The sliding rod movably penetrates through the inside of the limiting shell, and the limiting shell can limit and linearly move the sliding rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structural schematic diagram of a rotary drilling rig bit salvage device of the utility model;

[0016] Figure 2 is the overall bottom structural schematic diagram of a rotary drilling rig bit salvage device of the utility model;

[0017] Figure 3 is the cross-sectional structural schematic diagram of the mounting cylinder of a rotary drilling rig bit salvage device of the utility model;

[0018] Figure 4 is the structural schematic diagram of the sliding rod of a rotary drilling rig bit salvage device of the utility model;

[0019] Figure 5 is the structural schematic diagram of the clamping plate and the jaw of a rotary drilling rig bit salvage device of the utility model.

[0020] In the figure: 1, mounting cylinder; 2, combined cover; 3, connecting cylinder; 4, motor; 5, first gear; 6, bearing; 7, connecting shaft; 8, second gear; 9, arc-shaped groove; 10, limiting shell; 11, sliding rod; 12, support pillar; 13, clamping plate; 14, convex block; 15, clamping jaw; 16, electric push rod; 17, protective shell; 18, protective cylinder; 19, mounting ring; 20, electromagnet. Specific implementation mode

[0021] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes.

[0022] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, a rotary drilling rig bit fishing tool;

[0023] Comprising a mounting cylinder 1, a sliding rod 11 and a mounting ring 19, a bearing 6 is arranged at the bottom end of the mounting cylinder 1, a connecting shaft 7 is arranged inside the bearing 6, a second gear 8 is arranged at the bottom end of the connecting shaft 7, five arc-shaped grooves 9 are symmetrically penetrated and opened inside the second gear 8, a support pillar 12 is arranged at the bottom end of the sliding rod 11, and the support pillar 12 movably penetrates inside the arc-shaped groove 9, one end of the sliding rod 11 is provided with a clamping plate 13, a convex block 14 is arranged on the inner side of the clamping plate 13, a clamping jaw 15 is rotatably arranged at the top end of the clamping plate 13, an electric push rod 16 is arranged on one side of the clamping plate 13, an electromagnet 20 is arranged inside the mounting ring 19, the clamping plate 13 is an arc-shaped plate, the convex block 14 is made of rubber material, and the clamping jaw 15 is a Z-shaped plate.

[0024] The connecting shaft 7 is arranged under the mounting tube 1 by using the bearing 6. The connecting shaft 7 can be supported by the bearing 6 to rotate, so that the second gear 8 can rotate under the mounting tube 1. The support 12 arranged at the bottom end of the sliding rod 11 can penetrate the interior of the arc groove 9 provided inside the second gear 8 through movement. When the second gear 8 rotates, the arc groove 9 can slide and move the support 12 to move. By adjusting the position of the support 12 inside the arc groove 9, the use length of the sliding rod 11 can be adjusted, and the use position of each clamping plate 13 under the mounting tube 1 can be adjusted. By reducing the spacing between each clamping plate 13, the clamping plate 13 and the protrusion 14 can be used to clamp the drill bit of the rotary drilling rig that needs to be salvaged. The mounting ring 19 provides an installation space for the electromagnet 20. The electromagnet 20 is usually composed of a coil and an iron core. When current passes through the coil, the iron core is magnetized, so that The electromagnet 20 exhibits magnetism, which can be canceled by cutting off the current. Therefore, the electromagnet 20 is a non-permanent magnet, and its magnetism can be controlled by turning the current on and off. The electromagnet 20 can be used to perform preliminary magnetic adsorption on the rotary drilling rig drill bit. After the clamping plate 13 clamps the rotary drilling rig drill bit, the clamping plate 13 is rotatably connected to the clamping plate 13 through the clamping claw 15. The electric push rod 16 is rotatably set on one side of the clamping plate 13, and the output end of the electric push rod 16 is rotatably connected to the clamping claw 15. When the electric push rod 16 runs to push the clamping claw 15, the clamping claw 15 set at the top of the clamping plate 13 is tilted. The clamping claw 15 can be used to clamp the rotary drilling rig drill bit for a second time. The electromagnet 20, the clamping plate 13 and the clamping claw 15 are used in combination to clamp the rotary drilling rig drill bit multiple times, effectively improving the stability of the salvage device clamping the rotary drilling rig drill bit.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a drill bit salvage device for a rotary drilling rig;

[0026] A combination cover 2 is provided at the top of the mounting tube 1, a connecting tube 3 is provided at the top of the combination cover 2, a motor 4 is provided on the inner wall of the bottom of the mounting tube 1, a number one gear 5 is provided at the output end of the motor 4, and the number one gear 5 is meshed and connected with the number two gear 8, a limit shell 10 is provided at the bottom end of the mounting tube 1, a sliding rod 11 movably penetrates the interior of the limit shell 10, a protective tube 18 is provided at the bottom end of the mounting tube 1, and the protective tube 18 is located on the outside of the number one gear 5 and the number two gear 8, the sliding rod 11 movably penetrates the interior of the protective tube 18, a protective shell 17 is provided on the outside of the clamping plate 13, and a mounting ring 19 is provided at the bottom end of the protective tube 18.

[0027] The installation cylinder 1 is the main combined component of the rotary drilling rig bit fishing tool. The interior of the installation cylinder 1 is used to install the motor 4 and the power storage element that provides the operation of the motor 4. The combined cover 2 can be used to combine and seal the top end of the installation cylinder 1. The connecting cylinder 3 is used to connect to the external fishing rod to ensure the normal use of the fishing tool. Through the meshing connection of the first gear 5 and the second gear 8, when the motor 4 runs forward and backward, the first gear 5 can drive the second gear 8 to rotate forward and backward. The sliding rod 11 passes through the interior of the limiting shell 10 movably, and the limiting shell 10 can limit the linear movement of the sliding rod 11. The protection cylinder 18 covers and protects the meshing connection of the first gear 5 and the second gear 8. A through groove is provided at the top end of the protective shell 17 to ensure the angular inclination when the electric push rod 16 is used. The protective shell 17 can cover and protect the electric push rod 16.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A drill bit salvage device for a rotary drilling rig, comprising a mounting tube (1), a sliding rod (11) and a mounting ring (19), characterized in that: A bearing (6) is arranged at the bottom end of the mounting tube (1), a connecting shaft (7) is arranged inside the bearing (6), a second gear (8) is arranged at the bottom end of the connecting shaft (7), five groups of arc grooves (9) are symmetrically penetrated inside the second gear (8), a support (12) is arranged at the bottom end of the sliding rod (11), and the support (12) movably penetrates the inside of the arc groove (9), a clamping plate (13) is arranged at one end of the sliding rod (11), a protrusion (14) is arranged on the inner side of the clamping plate (13), a clamping claw (15) is rotatably arranged at the top end of the clamping plate (13), an electric push rod (16) is arranged on one side of the clamping plate (13), and an electromagnet (20) is arranged inside the mounting ring (19).

2. A rotary drilling rig drill bit salvage device according to claim 1, characterized in that: A combination cover (2) is provided at the top end of the installation tube (1), and a connection tube (3) is provided at the top end of the combination cover (2).

3. The drill bit salvage device for rotary drilling rig according to claim 1, characterized in that: A motor (4) is arranged on the inner wall of the bottom of the installation cylinder (1), a first gear (5) is arranged at the output end of the motor (4), and the first gear (5) is meshingly connected with a second gear (8).

4. The rotary drilling rig drill bit salvage device according to claim 1, characterized in that: A limiting shell (10) is provided at the bottom end of the installation cylinder (1), and the sliding rod (11) movably penetrates the interior of the limiting shell (10).

5. The rotary drilling rig drill bit salvage device according to claim 1, characterized in that: The clamping plate (13) is an arc-shaped plate, the protrusion (14) is made of rubber material, and the clamping claw (15) is a Z-shaped plate.

6. The rotary drilling rig drill bit salvage device according to claim 1, characterized in that: A protective tube (18) is arranged at the bottom end of the installation tube (1), and the protective tube (18) is located outside the first gear (5) and the second gear (8), the sliding rod (11) movably penetrates the interior of the protective tube (18), a protective shell (17) is arranged on the outside of the clamping plate (13), and the installation ring (19) is arranged at the bottom end of the protective tube (18).

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