阅读说明：本技术 一种可更换刀翼式大直径复合片扩孔钻头 (Blade-replaceable large-diameter composite sheet hole expanding drill bit ) 是由 张金魁 王青振 段西亮 孙亚岳 梁西栋 邢介波 李金龙 于 2020-05-20 设计创作，主要内容包括：本发明涉及扩孔钻头技术领域,尤其为一种可更换刀翼式大直径复合片扩孔钻头,包括钻头、限位装置、定位装置和保护装置,所述钻头外侧底端设有限位装置,且限位装置与钻头固定连接,所述限位装置底端设有定位装置,所述钻头外侧顶端设有保护装置,本发明中,通过设置的定位块和第一刀翼,这种设置配合定位块与第一螺钉的螺旋连接、上卡块与下卡块的滑动连接和第二螺钉与第一刀翼及下卡块的螺旋连接,使用装置在较硬的土层内进行扩孔时,实现了扩孔后刀翼的快速更换和安装,操作简单、方便、快捷。(The invention relates to the technical field of hole expanding drill bits, in particular to a large-diameter composite sheet hole expanding drill bit with a replaceable blade, which comprises a drill bit, a limiting device, a positioning device and a protection device, wherein the limiting device is arranged at the bottom end of the outer side of the drill bit and is fixedly connected with the drill bit, the positioning device is arranged at the bottom end of the limiting device, and the protection device is arranged at the top end of the outer side of the drill bit.)

1. The utility model provides a compound piece reamer bit of removable blade formula major diameter, includes drill bit (1), stop device (2), positioner (3) and protection device (4), its characterized in that: the drill bit (1) outside bottom is equipped with stop device (2), and stop device (2) and drill bit (1) fixed connection, stop device (2) bottom is equipped with positioner (3), drill bit (1) outside top is equipped with protection device (4).

2. The replaceable blade large diameter composite sheet reamer bit of claim 1, wherein: stop device (2) are including fixed disk (201), regulating block (202), threaded shaft (203) and stopper (204), drill bit (1) outside bottom is equipped with fixed disk (201), and fixed disk (201) and drill bit (1) fixed connection, fixed disk (201) and positioner (3) sliding connection, fixed disk (201) top is equipped with regulating block (202), and regulating block (202) run through fixed disk (201), regulating block (202) rotate with fixed disk (201) and are connected, regulating block (202) bottom face fixedly connected with threaded shaft (203), and threaded shaft (203) rotate with fixed disk (201) and be connected, threaded shaft (203) outside screwed connection has stopper (204).

3. The replaceable blade large diameter composite sheet reamer bit of claim 1, wherein: the positioning device (3) comprises a positioning block (301), a first screw (302), an upper clamping block (303), a lower clamping block (304), a second screw (305), a first blade (306), a second blade (307), a wear-resistant layer (308) and a third screw (309), the bottom end of the limiting device (2) is connected with the positioning block (301) in a sliding mode, the inner side of the positioning block (301) is connected with the first screw (302) in a spiral mode, the first screw (302) penetrates through the positioning block (301) and the drill bit (1), the first screw (302) is connected with the drill bit (1) in a spiral mode, the outer side of the positioning block (301) is fixedly connected with the upper clamping block (303), the inner side of the upper clamping block (303) is connected with the lower clamping block (304) in a sliding mode, the surface, far away from the center of the drill bit (1), of the lower clamping block (304) is connected with the first blade (306) in a, the surface, close to the drill bit (1), of the lower fixture block (304) is spirally connected with a second screw (305), the second screw (305) penetrates through the lower fixture block (304) and the first blade (306), and the second screw (305) is spirally connected with the first blade (306).

4. The replaceable blade large diameter composite sheet reamer bit of claim 3, wherein: lower fixture block (304) is kept away from on the face at drill bit (1) center sliding connection has second blade (307), and second blade (307) and stop device (2) sliding connection, lower fixture block (304) is close to spiral connection has second screw (305) on the face of drill bit (1), and second screw (305) run through fixture block (304) and second blade (307) down, second screw (305) and second blade (307) threaded connection, second blade (307) outside sliding connection has wearing layer (308), wearing layer (308) outside spiral connection has third screw (309), and third screw (309) run through wearing layer (308) and second blade (307), third screw (309) and wearing layer (308) and second blade (307) spiral connection.

5. The replaceable blade large diameter composite sheet reamer bit of claim 1, wherein: protection device (4) are including fixed cover (401), connecting block (402), spring (403), pressure sensor (404) and electric telescopic handle (405), drill bit (1) outside top is rotated and is connected with fixed cover (401), drill bit (1) inboard top sliding connection has connecting block (402), and connecting block (402) runs through drill bit (1) and fixed cover (401), connecting block (402) and fixed cover (401) sliding connection, connecting block (402) right side is equipped with spring (403), terminal surface left side sliding connection has pressure sensor (404) before connecting block (402), and pressure sensor (404) and fixed cover (401) fixed connection, connecting block (402) left end face sliding connection has electric telescopic handle (405), and electric telescopic handle (405) and fixed cover (401) fixed connection.

6. The replaceable blade large diameter composite sheet reamer bit of claim 2, wherein: the limiting block (204) is close to the surface of the center of the fixed disc (201) and is arranged in an inclined plane, and the limiting block (204) is connected with the fixed disc (201) and the positioning device (3) in a sliding mode.

7. The replaceable blade large diameter composite sheet reamer bit of claim 3, wherein: the lower fixture block (304) is close to the center surface of the drill bit (1) and is arranged in an arc surface, and the lower fixture block (304) is connected with the drill bit (1) in a sliding mode.

8. The replaceable blade large diameter composite sheet reamer bit of claim 5, wherein: the number of the springs (403) is 2, the springs (403) are symmetrically arranged on the right side of the connecting block (402), and the springs (403) are fixedly connected with the connecting block (402) and the drill bit (1).

Technical Field

The invention relates to the technical field of hole expanding drill bits, in particular to a blade-replaceable large-diameter composite sheet hole expanding drill bit.

Background

The reamer bit is formed by a cutting edge and a chip removal groove, the cutting edge is used for drilling, the drill bit drills a bottom hole, the reamer bit enlarges the bottom hole drilled by the drill bit, along with the continuous development of the society, the application of the reamer bit is more and more, the application field of the reamer bit is more and more extensive, but some defects exist in the use of part of the composite sheet reamer bit, and therefore the demand for the replaceable blade type large-diameter composite sheet reamer bit is increased day by day.

In the reamer bit field, the partial reamer bit that uses at present is inconvenient when carrying out the change of blade very much, because install through the welded mode, so waste time and energy when changing, the operation degree of difficulty is big, just when changing the blade, can not be fine guarantee the even after the blade installation in addition, thereby can reduce the life of blade, the normal use of drill bit has been influenced, more partial reamer bit is when using, when the device receives great torsion, the cracked phenomenon takes place in the interior drill bit junction of avoiding installing that can not be fine, in case the device breaks, can lead to the drill bit can't take out, not only reduced the life of drill bit, still increased the input of cost, consequently, propose a compound piece of removable blade formula major diameter reamer bit to above-mentioned problem.

Disclosure of Invention

The invention aims to provide a blade-replaceable large-diameter composite sheet hole expanding drill bit, which solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a compound piece reamer bit of removable wing formula major diameter, includes drill bit, stop device, positioner and protection device, drill bit outside bottom is equipped with stop device, and stop device and drill bit fixed connection, the stop device bottom is equipped with positioner, drill bit outside top is equipped with protection device.

Preferably, stop device includes fixed disk, regulating block, threaded shaft and stopper, drill bit outside bottom is equipped with the fixed disk, and fixed disk and drill bit fixed connection, fixed disk and positioner sliding connection, the fixed disk top is equipped with the regulating block, and the regulating block runs through the fixed disk, the regulating block rotates with the fixed disk to be connected, regulating block bottom face fixedly connected with threaded shaft, and threaded shaft rotates with the fixed disk to be connected, threaded shaft outside screwed connection has the stopper.

Preferably, positioner includes locating piece, first screw, goes up the fixture block, second wing, wearing layer and third screw down, stop device bottom sliding connection has the locating piece, the inboard screwed connection of locating piece has first screw, and first screw runs through locating piece and drill bit, first screw and drill bit screwed connection, the fixture block is gone up to locating piece outside fixedly connected with, go up fixture block inboard sliding connection has lower fixture block, sliding connection has first wing on the face that the drill bit center was kept away from to the fixture block down, and first wing and stop device sliding connection, screwed connection has the second screw on the face that the fixture block is close to the drill bit down, and the second screw runs through fixture block and first wing down, second screw and first wing screwed connection.

Preferably, lower fixture block is kept away from sliding connection on the face at drill bit center and is had the second wing, and second wing and stop device sliding connection, lower spiral connection has the second screw on the face that the fixture block is close to the drill bit, and the second screw runs through fixture block and second wing down, second screw and second wing spiral connection, second wing outside sliding connection has the wearing layer, the wearing layer outside spiral connection has the third screw, and the third screw runs through wearing layer and second wing, third screw and wearing layer and second wing spiral connection.

Preferably, protection device is including fixed cover, connecting block, spring, pressure sensor and electric telescopic handle, drill bit outside top is rotated and is connected with fixed cover, the inboard top sliding connection of drill bit has the connecting block, and the connecting block runs through drill bit and fixed cover, connecting block and fixed cover sliding connection, the connecting block right side is equipped with the spring, terminal surface left side sliding connection has pressure sensor before the connecting block, and pressure sensor and fixed cover fixed connection, connecting block left end face sliding connection has electric telescopic handle, and electric telescopic handle and fixed cover fixed connection.

Preferably, the surface of the limiting block close to the center of the fixed disk is provided with an inclined surface, and the limiting block is connected with the fixed disk and the positioning device in a sliding manner.

Preferably, the surface of the lower fixture block close to the center of the drill bit is provided with an arc surface, and the lower fixture block is connected with the drill bit in a sliding manner.

Preferably, the number of the springs is 2, the springs are symmetrically arranged on the right side of the connecting block, and the springs are fixedly connected with the connecting block and the drill bit.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the reamer, the positioning block and the first reamer wing are arranged, the arrangement is matched with the spiral connection of the positioning block and the first screw, the sliding connection of the upper fixture block and the lower fixture block and the spiral connection of the second screw and the first reamer wing and the lower fixture block, when the reamer is used for reaming in a hard soil layer, the reamer wing is quickly replaced and installed after reaming is achieved, and the reamer is simple, convenient and quick to operate;

2. according to the invention, through the arrangement of the positioning block and the second blade, the arrangement is matched with the spiral connection of the positioning block and the first screw, the sliding connection of the upper clamping block and the lower clamping block and the spiral connection of the second screw and the second blade and the lower clamping block, when the device is used for reaming a softer soil layer, the rapid replacement and installation of the blade after reaming are realized, the operation is simple, convenient and rapid, and the cost investment is reduced while the normal reaming is ensured;

3. according to the invention, through the arrangement of the limiting block, the arrangement is matched with the fixed connection of the adjusting block and the threaded shaft, the spiral connection of the threaded shaft and the limiting block and the sliding connection of the limiting block and the fixed disk, when the cutter wings are replaced, the cutter wings are limited at equal intervals, so that the service life of the cutter wings and the normal use of a drill bit are ensured;

4. according to the invention, through the arrangement of the connecting block and the pressure sensor, the arrangement is matched with the elasticity of the spring to the connecting block, the sliding connection of the connecting block and the fixing sleeve, the drill bit and the electric telescopic rod and the induction of the pressure sensor to the pressure, when the device is subjected to a larger torsion force in the use process, the phenomenon that the connection part of the device is broken is avoided, so that the service life of the drill bit is ensured, and the cost input is reduced.

Drawings

FIG. 1 is a schematic overall structure diagram of a first embodiment of the present invention;

FIG. 2 is a schematic overall structure diagram of a second embodiment of the present invention;

FIG. 3 is a schematic view of an upper fixture block mounting structure according to the present invention;

FIG. 4 is a schematic view of an installation structure of the limiting block of the present invention;

FIG. 5 is a schematic view of a mounting structure of the lower fixture block of the present invention;

fig. 6 is a schematic view of the installation structure of the wear-resistant layer of the present invention.

In the figure: 1-drill bit, 2-limiting device, 201-fixed disc, 202-adjusting block, 203-threaded shaft, 204-limiting block, 3-positioning device, 301-positioning block, 302-first screw, 303-upper clamping block, 304-lower clamping block, 305-second screw, 306-first blade, 307-second blade, 308-wear layer, 309-third screw, 4-protection device, 401-fixed sleeve, 402-connecting block, 403-spring, 404-pressure sensor and 405-electric telescopic rod.

Detailed Description