CN216341918U

CN216341918U - Double-layer expanding drill bit for pile foundation construction

Info

Publication number: CN216341918U
Application number: CN202122677039.5U
Authority: CN
Inventors: 罗敏涵; 王雄雄; 朱礼鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-04-19
Anticipated expiration: 2031-11-03

Abstract

The utility model discloses a double-layer expanding drill bit for pile foundation construction, and relates to the technical field of drilling equipment. The electric push rod fixing device comprises a sleeve with an opening at the lower end and an electric push rod fixedly arranged at the top of the sleeve, wherein a connecting shaft is detachably arranged on the sleeve, a fixing assembly used for fixing the connecting shaft is arranged on the sleeve, the output end of the electric push rod is fixedly connected with a connecting column capable of sliding up and down along the inside of the sleeve, and two supporting rods which are all slidably penetrated through the connecting column are fixedly connected at the top of the sleeve. According to the utility model, the hole is preliminarily drilled by the drill bit, and then the opening angle of the hole expanding component is controlled by the electric push rod, so that the hole expanding effect is completed, the opening angle of the hole expanding component can be adjusted, a worker can expand the hole into a required size according to actual needs, and in addition, the connecting shaft is detachably mounted, so that the worker can conveniently disassemble the connecting shaft and the sleeve.

Description

Double-layer expanding drill bit for pile foundation construction

Technical Field

The utility model relates to the technical field of drilling equipment, in particular to a double-layer expanding drill bit for pile foundation construction.

Background

The pile foundation comprises stake and pile cap, in civil engineering field, is often used in the construction of precast pile or bored concrete pile, and no matter which kind of basic construction, all need drill hole in advance on the construction land, general drilling equipment, it is not convenient for the staff to carry out the hole enlargement to the hole that bores, general drilling equipment in addition, connecting axle and external motor output shaft fix the back on it, are not convenient for the staff to dismantle it, design a pile foundation construction for the double-deck hole enlargement drill bit solve this problem for this reason.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: the utility model provides a double-layer expanding drill bit for pile foundation construction, which aims to solve the problems that a drilling device is inconvenient to expand a hole and is inconvenient to disassemble.

The utility model specifically adopts the following technical scheme for realizing the purpose:

a double-layer expanding drill bit for pile foundation construction comprises a sleeve with an opening at the lower end and an electric push rod fixedly arranged at the top of the sleeve, wherein a connecting shaft is detachably arranged on the sleeve, a fixing component for fixing the connecting shaft is arranged on the sleeve, the output end of the electric push rod is fixedly connected with a connecting column capable of sliding up and down in the sleeve, two supporting rods which are all slidably penetrated through the connecting column are fixedly connected at the top of the sleeve, one end of each supporting rod, which is positioned outside the sleeve, is fixedly connected with the same drill bit, two expanding components with adjustable included angles are arranged between the drill bit and the connecting column, each expanding component comprises a first connecting rod hinged with the connecting column, a second connecting rod is hinged on one end, which is far away from the connecting column, of the first connecting rod, and one end, which is far away from the first connecting rod, is hinged with the drill bit, the diameter expanding cutter head is welded on the second connecting rod.

Furthermore, the side wall of the connecting shaft is provided with a bulge, the upper end of the sleeve is provided with a slot matched with the connecting shaft and the bulge, and the connecting shaft and the bulge are inserted into the slot.

Further, sleeve upper end is equipped with the spout, fixed subassembly include sliding connection in slider in the spout, the slider with fixedly connected with spring between the spout, slider upper end fixedly connected with be used for right the arch carries out the arc fixed.

Further, the surface layer of the spring is galvanized.

The utility model has the following beneficial effects:

1. according to the utility model, the hole is preliminarily drilled by the drill bit, and then the opening angle of the hole expanding component is controlled by the electric push rod, so that the hole expanding effect is completed, the opening angle of the hole expanding component can be adjusted, and a worker can expand the hole to the required size according to actual needs.

2. The connecting shaft is detachably mounted, and the fixing assembly is convenient for workers to limit and fix the connecting shaft, so that the workers can disassemble the connecting shaft and the sleeve conveniently, and the workers can replace the device conveniently.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a top view of the present invention;

fig. 3 is a sectional view taken along line a-a of fig. 2 in the present invention.

Reference numerals: 1. a sleeve; 2. an electric push rod; 3. a connecting shaft; 4. a fixing assembly; 41. a slider; 42. a spring; 43. An arc-shaped plate; 5. connecting columns; 6. a support bar; 7. a drill bit; 8. a diameter expanding assembly; 81. a first link; 82. a second link; 9. a protrusion; 10. a chute; 11. expanding the diameter of the cutter head.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1, 2 and 3, a double-layer expanding drill bit for pile foundation construction comprises a sleeve 1 with an opening at the lower end and an electric push rod 2 fixedly arranged at the top of the sleeve 1, a connecting shaft 3 is detachably arranged on the sleeve 1 and is provided with a fixing component 4 for fixing the connecting shaft 3, the output end of the electric push rod 2 is fixedly connected with a connecting post 5 capable of sliding up and down in the sleeve 1, the top of the sleeve 1 is fixedly connected with two supporting rods 6 which both slide through the connecting post 5, one end of the two supporting rods 6 outside the sleeve 1 is fixedly connected with a same drill bit 7, two expanding components 8 with adjustable included angles are arranged between the drill bit 7 and the connecting post 5, each expanding component 8 comprises a first connecting rod 81 hinged with the connecting post 5, one end of the first connecting rod 81, far away from the connecting post 5, is hinged with a second connecting rod 82, one end of the second connecting rod 82, far away from the first connecting rod 81, is hinged with the drill bit 7, the hole expanding tool further comprises an expanding tool bit 11 welded on the second connecting rod 82, when a worker needs to expand a hole, the electric push rod 2 can be started to work, the electric push rod 2 drives the connecting column 5 to approach the drill bit 7, and then the first connecting rod 81 and the second connecting rod 82 rotate mutually to form an opening angle. And the arrangement of the hole expanding cutter head 11 can expand the hole with the external motor after forming the opening angle, when in specific use, a worker can fix the connecting shaft 3 with the output shaft of the external motor, when needing to drill, the motor is started to work, then the motor drives the drill bit 7 to drill the needed hole, after the drilling is finished, the worker can start the electric push rod 2 to work, the electric push rod 2 drives the connecting column 5 to slide towards the outside of the sleeve 1, so that the opening angle shown in figure 3 is formed by the hole expanding component 8, the worker can adjust the opening angle of the hole expanding component 8 according to the hole expanding degree, after the adjustment is finished, the motor drives the hole expanding component 8 to expand the hole, when the worker needs to disassemble the device, the worker can release the limiting fixing effect of the fixing component 4 on the connecting shaft 3, and then separate the connecting shaft 3 from the sleeve 1, make sleeve 1 and motor separation promptly, when needs reinstallate, the staff can carry out spacing fixed to sleeve 1 and connecting axle 3 through fixed subassembly 4 once more to this device's design has solved the drilling equipment and has been not convenient for carry out the hole and expand and the problem of not being convenient for dismantle.

As shown in fig. 2 and 3, in some embodiments, the side wall of the connecting shaft 3 is configured with a protrusion 9, the upper end of the sleeve 1 is provided with a slot matched with both the connecting shaft 3 and the protrusion 9, both the connecting shaft 3 and the protrusion 9 are inserted into the slot, and the protrusion 9 is arranged to effectively limit the connecting shaft 3, so that the connecting shaft and the sleeve 1 cannot rotate relatively.

As shown in fig. 2 and 3, in some embodiments, the sleeve 1 is provided with a sliding slot 10 at an upper end thereof, the fixing assembly 4 includes a sliding block 41 slidably connected in the sliding slot 10, a spring 42 is fixedly connected between the sliding block 41 and the sliding slot 10, an arc-shaped plate 43 for fixing the protrusion 9 is fixedly connected to an upper end of the sliding block 41, when the worker needs to separate the sleeve 1 from the connecting shaft 3, the worker can manually and horizontally move the arc-shaped plate 43 until the arc-shaped plate is separated from the bulge 9, at the moment, the tight fixing state of the bulge 9 by the arc-shaped plate 43 is released, the worker can move the connecting shaft 3 and the bulge 9 out of the slot, when the connecting shaft 3 is required to be connected with the sleeve 1, the connecting shaft 3 and the bulge 9 are inserted into the slot, and the arc-shaped plate 43 is released, at the moment, the arc-shaped plate 43 horizontally moves under the elastic reset action of the spring 42, and finally, the bulge 9 is limited and fixed in the slot.

As shown in fig. 2 and 3, in some embodiments, the surface of the spring 42 is galvanized, which is effective to improve the corrosion resistance of the spring 42.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The double-layer expanding drill bit for pile foundation construction comprises a sleeve (1) with an opening at the lower end and an electric push rod (2) fixedly installed at the top of the sleeve (1), and is characterized in that a connecting shaft (3) is detachably installed on the sleeve (1) and a fixing component (4) used for fixing the connecting shaft (3) is arranged on the sleeve, the output end of the electric push rod (2) is fixedly connected with a connecting column (5) capable of sliding up and down in the sleeve (1), the top of the sleeve (1) is fixedly connected with two supporting rods (6) which all slide through the connecting column (5), one end of each of the two supporting rods (6) positioned outside the sleeve (1) is fixedly connected with the same drill bit (7), two expanding components (8) with adjustable included angles are installed between the drill bit (7) and the connecting column (5), each expanding component (8) comprises a first connecting rod (81) hinged with the corresponding connecting column (5), one end, far away from the spliced pole (5), of the first connecting rod (81) is hinged to a second connecting rod (82), one end, far away from the first connecting rod (81), of the second connecting rod (82) is hinged to the drill bit (7), and the drilling machine further comprises an expanding cutter head (11) welded to the second connecting rod (82).

2. The double-layer expanding drill bit for pile foundation construction according to claim 1, wherein a protrusion (9) is formed on the side wall of the connecting shaft (3), the upper end of the sleeve (1) is provided with a slot matched with the connecting shaft (3) and the protrusion (9), and the connecting shaft (3) and the protrusion (9) are inserted into the slot.

3. The double-layer expanding drill bit for pile foundation construction according to claim 2, wherein a sliding groove (10) is formed in the upper end of the sleeve (1), the fixing assembly (4) comprises a sliding block (41) which is slidably connected into the sliding groove (10), a spring (42) is fixedly connected between the sliding block (41) and the sliding groove (10), and an arc-shaped plate (43) for fixing the protrusion (9) is fixedly connected to the upper end of the sliding block (41).

4. The double-layer hole expanding drill for pile foundation construction according to claim 3, wherein the surface layer of the spring (42) is galvanized.