CN210685902U

CN210685902U - Drill bit fishing device

Info

Publication number: CN210685902U
Application number: CN201921422339.5U
Authority: CN
Inventors: 黄文格
Original assignee: Nanning Hongbao Machinery Co Ltd
Current assignee: Nanning Hongbao Machinery Co Ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-06-05
Anticipated expiration: 2029-08-29

Abstract

The utility model relates to the technical field of civil engineering construction auxiliary equipment, in particular to a drill bit fishing device, which comprises a base, two fishing hooks and a spring matched with each fishing hook, wherein the side walls at the two sides of the base or other side walls are respectively provided with a vertical mounting groove corresponding to the fishing hook, and the mounting groove is hinged with the middle part of the fishing hook; the top end of the fishing hook is hinged with the first end of the matched spring respectively, the second end of the spring is connected to the base, the bottom ends of the fishing hooks extend downwards to the bottom surface of the base and are bent downwards and inwards to form hook heads, the bottom surfaces of the hook heads are arranged in a downward inclination mode from hook tips to hook bottoms, and the interval distance between the opposite hook heads is smaller than or equal to the width of a drill bit interface of the rotary drilling machine; the fishing hook can swing in the mounting groove to enable the fishing hook to be opened outwards or retracted inwards, and the hook head of the fishing hook can clamp the drill bit of the rotary drilling rig under the action of the spring. The utility model discloses can self-holding drill bit, take out the drill bit from the stake hole fast, it has simple structure, convenient to use's advantage.

Description

Drill bit fishing device

Technical Field

The utility model relates to a civil engineering auxiliary assembly technical field, in particular to drill bit fishing device.

Background

The cast-in-place pile system is a pile formed by forming a pile hole in foundation soil through mechanical drilling, steel pipe soil extrusion or manual excavation and the like on an engineering site, placing a reinforcement cage in the pile hole and pouring concrete into the pile hole. At present, mechanical drilling is usually carried out by using a rotary drilling machine, and in the drilling process of the rotary drilling machine, the drill bit can inevitably fall into a pile hole due to the breakage or falling of a drill rod pin, the breakage of a drill bit square sleeve, the breakage of a drill rod square head, the breakage of a core and the like, and the conventional treatment method comprises the following steps: 1. under the condition that the party A allows, after the sediments are treated, a diver can be hired to dive to the position of the dropped drill bit and hang a steel wire rope, so that the drill bit can be salvaged by the method, but the cost is higher; 2. pumping water after the long pile casing is used for following the drill bit position, and fishing people after all water is pumped out, so that the method has long period and influences the construction progress; 3. the drill bit is directly broken by the impact drill, and the cost is increased by adopting the method; 4. the common fisher can be used for fishing, the manufacture is simple and crude, the use is inconvenient, and the fishing efficiency is low. If the authorized bulletin number is CN 202706971U's drill bit fisher, it includes base plate, oil pipe, two pothooks, two piston rods and two hydro-cylinders, inject hydraulic oil to the hydro-cylinder through oil pipe, hydraulic oil pressure promotes the piston rod and outwards stretches out and make the inside motion of pothook chucking drill bit. Although this drill bit fisher can salvage the drill bit, nevertheless because the mode through manual injection hydraulic oil presss from both sides tight drill bit, clamping structure is comparatively complicated, and is convenient inadequately when using.

SUMMERY OF THE UTILITY MODEL

To the technical problem that exists, an object of the utility model is to provide a can self-holding drill bit, with the device that the drill bit was taken out from the stake hole fast in order to solve above-mentioned problem, it has simple structure, convenient to use's advantage.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a drill bit fishing device comprises a base and at least two fishing hooks arranged on the base, wherein a connecting port used for connecting a drill rod of a rotary drilling machine is arranged on the top surface of the base, a fixing hole used for fixing the drill rod is formed in the side wall of the connecting port, the drill bit fishing device also comprises a spring matched with each fishing hook, a mounting groove extending from the top surface to the bottom surface of the side wall of the base is formed in the side wall of the base, and the middle part of each fishing hook is hinged in the mounting groove; the top end of the fishing hook is hinged with the first end of the matched spring, the second end of the spring is connected to the base, the bottom ends of the fishing hooks extend downwards and protrude out of the bottom surface of the base, the end part of the bottom end of the fishing hook is bent inwards to form a hook head, and the bottom surface of the hook head is arranged from the hook tip to the hook bottom in a downward inclined mode; the fishing hook can swing in the mounting groove to enable the hook head of the fishing hook to be opened outwards or contracted inwards, and the hook head of the fishing hook can clamp the drill bit of the rotary drilling machine under the action of the spring.

Preferably, the drilling machine further comprises a guide column arranged on the bottom surface of the base, the bottom end of the guide column is of a tip structure, and the shape of the outer wall surface of the guide column corresponds to the shape of the drill bit interface of the rotary drilling machine, so that the guide column can be inserted into the drill bit interface of the rotary drilling machine.

Preferably, the shape of the base connecting port corresponds to the shape of the outer wall surface of the lower end of the rotary excavating machine drill rod, and the rotary excavating machine drill rod is inserted into the connecting port.

Preferably, the shape of the position of the base fixing hole corresponds to that of a side hole at the lower end of the drill rod of the rotary drilling machine, and the base fixing hole is used for inserting a bolt to fix the drill rod of the rotary drilling machine.

Preferably, the spring is a spring.

Preferably, the fishing hook is of a straight-edge structure, and the hook head is of an inverted triangular shape.

Preferably, the side wall of the base is respectively provided with a horizontal groove communicated with the mounting groove, a push rod is arranged in the horizontal groove, the middle of the push rod is hinged to the top end of the fishing hook, the two ends of the push rod are respectively connected with a first end of a spring, and the second end of the spring is connected to the base.

Preferably, the spring fixing device further comprises a lengthened bolt, through holes are formed in the positions, connected with the springs, of the two ends of the push rod, and a screw rod of the lengthened bolt penetrates through the through holes and the springs and then is connected with the base through bolts to limit and fix the springs.

To sum up, the utility model discloses following beneficial effect has:

1. through the arrangement of the fishing hook, the push rod and the spring, the two sides of the base are provided with a vertical mounting groove and a horizontal groove which are mutually communicated, the middle part of the fishing hook is hinged in the vertical mounting groove, the top end of the fishing hook is hinged with the middle part of the push rod, the bottom end of the fishing hook is bent inwards to form a hook head, the push rod is arranged in the horizontal groove, the two sides of the push rod are connected with one end of the spring, and the other end of the spring; the fishing hook moves downwards and presses the periphery of the top end of the drill bit, when the hook head is outwards propped open by the drill bit, the fishing hook rotates in the vertical mounting groove by taking the middle hinge position as a fulcrum, the push rod moves inwards to compress the spring, then the hook head continues to move downwards to the clamping position, and the hook head contracts inwards to clamp the outer wall of the drill bit under the action of the spring. Compared with the prior art, the automatic clamping device can automatically clamp the drill bit and quickly take out the drill bit from the pile hole.

2. By arranging the connecting port, the inner shape of the connecting port is adapted to the shape of the outer wall surface of the lower end of the drill rod of the rotary drilling machine; the connecting port is provided with a fixing hole, the position shape of the fixing hole corresponds to the side hole at the lower end of the rotary drilling machine drill rod, the fishing device can be directly installed on the rotary drilling machine drill rod, the fishing cost is reduced, and the time is saved;

3. the fishing device can be positioned and guided by arranging the guide columns; set up the guide post outer wall surface shape and suitable for with digging the inside shape of drill bit interface soon, the guide post bottom is most advanced structure, makes in the guide post inserts soon and digs quick-witted drill bit interface easily, and the location is more accurate, and the guide process is more steady, further improves and salvages work efficiency.

4. The lengthened bolt penetrates through the push rod and the spring to be fixed on the base so as to limit and fix the spring, the spring is in a contraction deformation energy storage state, the clamping force of the hook head is improved, the drill bit is prevented from falling due to mud resistance or collision of obstacles in the hanging-out process, and meanwhile, the spring is prevented from bending along the radial direction to play a role in fixing.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic sectional structure of the present invention;

fig. 3 is a schematic side view of the present invention.

The reference number is 1-base, 2-guide post, 3-salvage hook, 4-push rod, 5-hook head, 51-hook tip, 52-hook bottom, 6-spring, 7-lengthening bolt, 8-connecting port and 9-fixing hole. 10-bit interface, 101-side port, 11-drill pipe, 111-side hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, 2 and 3, the drill bit fishing device provided by the present embodiment includes a base 1, at least two fishing hooks 3 disposed on the base, and a spring 6 used in pair with each fishing hook; preferably, the spring is a compression spring; a square connecting port 8 used for connecting a rotary drilling machine drill rod 11 is arranged in the middle of the top surface of the base 1, circular fixing holes 9 used for fixing the rotary drilling machine drill rod 11 are formed in the middle of the side wall of the connecting port 8, the inner shape of the connecting port 8 is matched with the shape of the outer wall surface of the lower end of the rotary drilling machine drill rod 11, and the rotary drilling machine drill rod 11 is inserted into the connecting port 8; the fixing hole 9 is positioned and shaped to correspond to the side hole 111 at the lower end of the drill pipe 11 of the rotary drilling machine for inserting a plug (not shown) therein to fix the drill pipe 11 of the rotary drilling machine.

The following description will take two fishing hooks as an example

The side walls of two sides of the base 1 are provided with vertical rectangular mounting grooves extending from the top surface to the bottom surface of the base, and the middle parts of the fishing hooks 3 are hinged in the mounting grooves; the top end of the fishing hook 3 is hinged with the first end of the matched spring 6, and the second end of the spring is connected on the base 1.

Preferably, be equipped with respectively on the base 1 lateral wall with the communicating horizontal rectangular form recess of mounting groove, be equipped with cylindrical push rod 4 in the horizontal recess, push rod 4 middle part is articulated with fishing hook 3 top, 4 both ends of push rod are connected with 6 first ends of spring respectively, and 6 second ends of spring connect on base 1.

The bottom ends of the fishing hooks 3 extend downwards and protrude out of the bottom surface of the base 1, the end parts of the bottom ends of the fishing hooks 3 are bent inwards to form hook heads 5, and the bottom surfaces of the hook heads 5 are arranged in a downward inclined mode from hook tips to hook bottoms; typically, as shown in the figure, the fishing hook 3 is a straight-edge structure, and the hook head 5 is in an inverted triangle shape. In an unclamped state, the width of the drill bit interface 10 is larger than the distance between the two hook tips 51 and smaller than or equal to the distance between the two hook bottoms 52, the fishing hook 3 can swing in the installation groove to enable the hook head 5 of the fishing hook to be opened outwards or contracted inwards, and the hook head 5 of the fishing hook can clamp the drill bit of the rotary drilling machine under the action of a spring.

In another embodiment, in order to solve the problem that the positioning of the fishing bit device is not accurate enough, the fishing bit device further comprises a guide post 2 arranged in the middle of the bottom surface of the base 1, and the guide post 2 and the hook 5 form a fixed position relation to play a role in limiting and fixing the drill bit, and at the moment, even if two fishing hooks are deviated in position, three-point fixing can be formed between the two fishing hooks and the guide post 2. The bottom end of the guide column 2 is of a tip structure and is arranged on the bottom surface of the base 1, the shape of the outer wall surface of the guide column 2 is matched with the inner shape of the drill bit interface 10 of the rotary excavating machine, so that the guide column 2 can be inserted into the drill bit interface 10 of the rotary excavating machine more easily, the positioning is more accurate, the guiding process is more stable, and the working efficiency is further improved.

In another embodiment, in order to solve the problem that the drill bit is easy to fall off due to mud resistance or collision of obstacles in the process of hanging the drill bit out, the drill bit fishing device further comprises a lengthened bolt 7, press plates at two ends of the push rod 6 are provided with through holes, a screw rod of the lengthened bolt 7 penetrates through the through holes and the spring 6 and then is in bolted connection with the base 1, and the spring 6 is in a contraction deformation state, compared with the spring 6 in a natural state, the clamping force of a hook head can be improved when the drill bit is clamped; meanwhile, the screw of the lengthened bolt 7 is inserted into the spring 6 to prevent the spring 6 from bending along the radial direction, so that the spring is fixed.

The use method of the drill bit fishing device of the embodiment is as follows:

in the construction process, when the drill bit of the rotary drilling machine falls to the bottom of the pile hole due to separation from the drill rod 11, the drill rod 11 is firstly inserted into the connecting port 8 of the drill bit fishing device of the embodiment, and then a pin (not shown in the figure) passes through the two fixing holes 9 and the side hole 111 corresponding to the lower end of the drill rod 11, so that the drill rod 11 and the drill bit fishing device are connected together.

The rotary excavating machine drill rod 11 drives the fishing device to downwards probe along a pile hole until the rotary excavating machine drill rod contacts with a falling drill bit, then the position of the drill rod 11 is adjusted, the guide column 2 of the fishing device is aligned with the drill bit interface 10 to continue downwards probing, in the later downwards probing process, the guide column 2 is inserted into the drill bit interface 10, the hook heads 5 of the two straight-edge fishing hooks 3 are propped open by the drill bit interface 10, when the hook heads 5 downwards probe to the position of the side opening 101 of the side wall of the drill bit interface 10, the hook heads 5 of the two straight-edge fishing hooks 3 lose the support of the side wall of the drill bit interface 10, the compression springs 6 recover deformation, the push rod 4 is pushed to move outwards under the action of the compression springs 6, and therefore the straight-edge fishing hooks 3 are rotated to enable the two hook heads 5 to move. The drill pipe 11 is then lifted upwards until the drill bit is lifted out of the pile hole.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a drill bit fishing device, includes base and at least two fishing hooks that set up on the base, the base top surface is equipped with the connector that is used for connecting the quick-witted drilling rod of digging soon, the connector lateral wall is equipped with the fixed orifices that is used for fixed drilling rod, its characterized in that: the fishing hook is characterized by further comprising springs matched with the fishing hooks, an installation groove extending from the top surface to the bottom surface of the side wall of the base is formed in the side wall of the base, and the middle of each fishing hook is hinged in the installation groove; the top end of the fishing hook is hinged with the first end of the matched spring, the second end of the spring is connected to the base, the bottom ends of the fishing hooks extend downwards and protrude out of the bottom surface of the base, the end part of the bottom end of the fishing hook is bent inwards to form a hook head, and the bottom surface of the hook head is arranged from the hook tip to the hook bottom in a downward inclined mode; the fishing hook can swing in the mounting groove to enable the hook head of the fishing hook to be opened outwards or contracted inwards, and the hook head of the fishing hook can clamp the drill bit of the rotary excavator under the action of the spring.

2. A bit fishing device as claimed in claim 1, wherein: the bottom end of the guide column is of a tip structure, and the shape of the outer wall surface of the guide column corresponds to that of a drill bit interface of the rotary drilling machine, so that the guide column can be inserted into the drill bit interface of the rotary drilling machine.

3. A bit fishing device as claimed in claim 1, wherein: the shape of the base connecting port corresponds to the shape of the outer wall surface of the lower end of the drill rod of the rotary excavating machine, so that the drill rod of the rotary excavating machine is inserted into the connecting port.

4. A bit fishing device as claimed in claim 3, wherein: the shape of the position of the base fixing hole corresponds to that of a side hole at the lower end of the rotary excavating machine drill rod, and the base fixing hole is used for inserting a bolt to fix the rotary excavating machine drill rod.

5. A bit fishing device as claimed in claim 1, wherein: the spring is a spring.

6. A bit fishing device as claimed in claim 1, wherein: the fishing hook is of a straight-edge structure, and the hook head is of an inverted triangular shape.

7. A bit fishing device as claimed in claim 1, wherein: the fishing hook is characterized in that horizontal grooves communicated with the mounting groove are formed in the side wall of the base respectively, a push rod is arranged in each horizontal groove, the middle of each push rod is hinged to the top end of the fishing hook, the two ends of each push rod are connected with a first end of a spring respectively, and the second end of each spring is connected to the base.

8. A bit fishing device as claimed in claim 7, wherein: the spring fixing device is characterized by further comprising a lengthened bolt, through holes are formed in the positions, connected with the springs, of the two ends of the push rod, and a screw rod of the lengthened bolt penetrates through the through holes and the springs and then is connected with the base through bolts to limit and fix the springs.