CN106112051B - A kind of boring method - Google Patents

Abstract

The invention discloses a drilling method, which is characterized in that the steps are as follows: a. Axially close the drill rod and the transmission rod to bend the shrapnel; b. Probe the support arm into the narrow space opposite to each other. Make the axis of the drill pipe perpendicular to the surface to be drilled, and make the front end of the drill pipe reach the desired drilling position; c. Turn on the power source to drive the transmission rod, shrapnel, and drill pipe to rotate synchronously, and use the support arm and shrapnel to force the drill pipe to feed Drilling; d. After the drill pipe has penetrated more than two-thirds, lift the support arm, drive the two arc-shaped plates close together to stretch the shrapnel, continue to apply force with the support arm, so that the drill bit is completely inserted into the drill hole, and the lower end of the shrapnel straightens into the hole. Drill the hole to make the drill bit continue to feed; e. Turn to the given depth, lift the support arm, drive the two arc-shaped plates to separate, bend the shrapnel, drive the drill pipe out of the hole, withdraw the support arm, and complete the drilling. The invention can drill holes.

Description

a drilling method

technical field

The invention relates to a narrow space drilling tool and method, in particular to a drill bit, a drilling device with the drill bit and a narrow space drilling method thereof.

Background technique

In production and life, it is often necessary to drill holes on the side wall in a narrow space, and the drilling depth is required to be large, which is difficult to complete with existing equipment and still needs to be solved by technological innovation.

Contents of the invention

In order to solve the above problems, the present invention provides a drill bit, a drilling device with the drill bit and a method for drilling holes in a narrow space.

The technical solution adopted in the present invention is: a drill bit, which is characterized in that it includes a drill rod and a transmission rod. The transmission rod is located above the drill rod and the two are coaxial. Hinged to the upper end of the drill pipe, the upper end of the shrapnel is hinged to the lower end of the transmission rod, the middle part of the shrapnel is bent outward along the radial direction of the drill pipe, and the cross section of the shrapnel is arc-shaped with the arc center facing the axis of the drill pipe.

Further, the shaft center of the transmission rod is provided with an axial upper prism hole, and the lower ends of the two shrapnels are hinged on a connecting body, the connecting body is provided with a lower prism hole coaxial with the upper prism hole, and a Prismatic connection end that fits into the lower prismatic hole.

Further, the upper prism hole and the lower prism hole are congruent in cross-section, the upper prism hole runs through the transmission rod, the lower prism hole runs through the connecting body, the connecting end of the prism protrudes above the connecting body through the lower prism hole, and the shrapnel bends the prism to connect The protruding part of the end can be inserted into the upper prism hole.

Further, the drill rod is provided with a bushing, and an inner bell mouth is provided at the upper end of the bushing.

A drilling device with the drill bit is characterized in that the transmission rod is connected with a drive rod coaxial with it, the drive rod is connected with a transmission housing, and the housing is connected with a support arm perpendicular to the axis of the drive rod, A transmission mechanism for driving the driving rod is arranged parallel to the support arm, and the transmission mechanism is connected with a power source.

Further, the two sides of the rotation track of the shrapnel are provided with arc-shaped plates whose arc centers face the axis of the rotation track and whose axis is parallel to or coincident with the axis of the drill pipe. The back sides of the arcs of the two arc-shaped plates are respectively connected to driving arms, and the middle parts of the two driving arms are hinged. Together they form an X shape.

Further, on both sides of the rotation track of the shrapnel, there are arc-shaped plates whose arc centers face the axis of the rotation track and which are parallel to or coincident with the axis of the drill pipe. The back sides of the arcs of the two arc-shaped plates are respectively connected with driving arms, and the two driving arms are in the shape of L Type, the free ends of the two driving arms are respectively connected with parallel racks with opposite teeth and gaps. There are gears meshing with the two racks in the gap, and the gears are connected with the driving part. In the two opposite chutes on the body.

Further, the arc-shaped plate has a double-layer structure, the inner layer is distributed with openings, and balls are arranged between the outer layer and the inner layer, and a part of the balls protrudes out of the openings.

Further, the circumferential ends of the arc-shaped plate are provided with arc-shaped outer extensions that gradually move away from the axis.

The drilling device with the drill bit and its narrow space drilling method are characterized in that the steps are as follows:

a. Bring the drill pipe and the drive rod axially close to bend the shrapnel;

b. The support arm penetrates into the narrow space opposite to each other, so that the axis of the drill pipe is perpendicular to the surface to be drilled, and the front end of the drill pipe reaches the position to be drilled;

c. Turn on the power source to drive the transmission rod, shrapnel, and drill pipe to rotate synchronously, and use the support arm and shrapnel to force the drill pipe to feed into the drilling hole;

d. After the drill pipe has drilled more than two-thirds, lift the support arm, drive the two arc-shaped plates close together to stretch the shrapnel, continue to apply force with the support arm, so that the drill bit is completely inserted into the drill hole, and the lower end of the shrapnel straightens into the drill hole. Make the drill continue to feed;

e. Go to the given depth, lift the support arm, drive the two arc-shaped plates to separate, bend the shrapnel, drive the drill pipe out of the hole, withdraw the support arm, and complete the drilling.

The invention utilizes the expansion and contraction of the shrapnel to drill deeper holes on the side wall in the narrow space.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of Embodiment 1 of the present invention.

Fig. 2 is a schematic diagram of the overall structure of Embodiment 2 of the present invention.

Fig. 3 is an exploded schematic diagram of Embodiment 2 of the present invention.

Fig. 4 is a schematic diagram of the overall structure of Embodiment 3 of the present invention.

Fig. 5 is a schematic diagram of the overall structure of Embodiment 4 of the present invention.

Fig. 6 is a schematic diagram of the overall structure of Embodiment 5 of the present invention.

Fig. 7 is a schematic diagram of the exploded structure of Embodiment 5 of the present invention.

Label names in the figure: 1 drill rod; 2 transmission rod; 3 shrapnel; 4 first hinge shaft; 5 second hinge shaft; 6 upper prism hole; ; 11 transmission housing; 12 support arms; 13 transmission shaft; 14 helical gear; 15 drive arm; 16 third hinged shaft; 17 drive arm; 18 rack; 19 gear; 20 support body; 21 chute; ; 23 inner bell mouth; 24 arc-shaped outer extension; 25 inner layer; 26 opening; 27 outer layer; 28 ball; 29 arc-shaped plate.

Detailed ways

Embodiment 1 of the present invention is shown in Figure 1, the drill bit is provided with a drill rod 1 and a transmission rod 2, the transmission rod is located above the drill rod and both are coaxial, and at least two shrapnels are equidistantly distributed in the circumferential direction above the drill rod 3. In this embodiment, there are two left-right symmetrical pieces. It can also be more than three pieces during implementation. The lower end of the shrapnel is hinged to the upper end of the drill pipe through the first hinge shaft 4. The upper end of the drill pipe and the upper end of the shrapnel are hinged to the lower end of the transmission rod through the second hinge shaft 5. During implementation, the upper ends of the two shrapnels can also be hinged to the lower end of the transmission rod through two hinge shafts respectively. The middle part of the shrapnel is bent outward along the radial direction of the drill pipe. The cross section is an arc whose arc center faces the axis of the drill pipe. In this embodiment, the transmission rod is used to connect the power source, and the expansion and contraction of the shrapnel can be used to probe into the drilling hole, so that a deeper hole can be drilled on the side wall in the narrow space.

Embodiment 2 of the present invention as shown in Figures 2 and 3, the shaft center of the transmission rod of the drill bit is provided with an axial upper prism hole 6, and the lower ends of the two shrapnels are hinged on a connecting body 7, and the connecting body is provided with The upper prism hole is coaxial with the lower prism hole 8. A prism connecting end 9 matching the lower prism hole is arranged above the drill pipe. The upper prism hole and the lower prism hole have the same cross-section. Through the connecting body, the connecting end of the prism protrudes above the connecting body through the lower prism hole, and the protruding part of the curved prism connecting end of the shrapnel can be inserted into the upper prism hole, which can realize synchronous rigid drive connection and transmission rod connection when the initial buckling of the shrapnel is large There is a drive rod 10 coaxial with it, the drive rod is connected on a transmission housing 11, the housing is connected with a support arm 12 perpendicular to the axis of the drive rod, and a transmission mechanism for driving the drive rod is arranged parallel to the support arm. The transmission mechanism of example is transmission shaft 13, and transmission shaft is placed in the tubular support arm, and driving rod and transmission shaft are connected by helical gear 14 driving links, can also adopt driving modes such as belt during implementation, and transmission mechanism is connected with power source, and power source can make Manual or electric motor, the two sides of the shrapnel rotation track are provided with an arc-shaped plate 29 whose arc center faces the axis of the rotation track and the axis is parallel or coincident with the axis of the drill pipe. Hinged together by the third hinge shaft 16 in an X shape, the two arc-shaped plates can be driven closer or separated, and when a deeper hole needs to be drilled on the side wall in a narrow space, the drill rod and the transmission rod can be axially approached, Make the shrapnel bend, and then insert the support arm into the narrow space opposite to each other, make the axis of the drill pipe perpendicular to the surface to be drilled, and make the front end of the drill pipe reach the desired drilling position, start the power source to drive the transmission rod, shrapnel, and drill pipe synchronously Rotate, use the support arm and shrapnel to force the drill pipe to feed into the drilling hole, after the drill pipe has drilled to a certain depth, lift the support arm, drive the two arc-shaped plates closer to stretch the shrapnel, continue to use the support arm to make the drill bit completely Enter the drilling hole, straighten the lower end of the shrapnel into the drilling hole, make the drill bit continue to feed, turn to a given depth, lift the support arm, drive the two arc-shaped plates to separate, the shrapnel bends, drive the drill rod out of the hole, and withdraw the support arm. Finish drilling.

Embodiment 3 of the present invention, as shown in FIG. 4 , provides another structure for driving arc-shaped plates for Embodiment 2. Drive arms 17 are respectively connected to the arc back sides of the two arc-shaped plates. The two drive arms are L-shaped. The free ends of the arms are respectively connected with parallel racks 18 with opposite teeth and gaps. The gaps are provided with gears 19 meshing with the two racks respectively. The gears are connected with a driving part. The motor and the two toothed racks fit into two opposite sliding slots 21 on a supporting body 20 respectively, and the rotation of the gears can better control the closeness or separation of the two arc-shaped plates.

Embodiment 4 of the present invention is shown in Figure 5. On the basis of Embodiment 2, a shaft sleeve 22 is provided on the drill pipe, and an inner bell mouth 23 is provided at the upper end of the shaft sleeve. The technical effects of the shaft sleeve are: 1. It can guide the shrapnel into the hole; 2. Apply a suitable elastic force to the shrapnel so that the shrapnel deforms and elongates along the direction of the hole; 3. It can reduce the damage to the edge of the drilled hole when the shrapnel enters the hole. When in use, the preferred method is to fix the axle sleeve at the position to be drilled, and then drill the hole.

The two ends of the arc-shaped plate are provided with arc-shaped outer extensions 24 that gradually move away from the axis. The technical effects of this technical feature include: 1. It plays a guiding role and can reduce the hard collision with the shrapnel. 2. It can pre-treat the deformation of the shrapnel. Only when the shrapnel is deformed can the drill bit be drilled or pulled out along the axis of the drill bit. The arc-shaped outer extension 24 can pre-apply an elastic force to the shrapnel, so that the shrapnel will produce a small The deformation is beneficial to the curved plate to continue to apply elastic force to the shrapnel.

Embodiment 5 of the present invention is shown in Figures 6 and 7. On the basis of Embodiment 4, the arc-shaped plate is a double-layer structure, the inner layer 25 is distributed with openings 26, and balls are arranged between the outer layer 27 and the inner layer. 28. Part of the ball protrudes out of the hole. The technical effects that can be achieved by such a technical feature include: 1. Reduce the rotational resistance of the shrapnel; , and can roll vertically, that is to say, the ball can not only roll in a plane perpendicular to the axis of the drill bit, but also in a direction parallel to the axis of the drill bit. 3. It can prolong the service life of the shrapnel. 4. It can improve the heat dissipation effect of the shrapnel.

The drilling device with the above-mentioned drill bit involved in the present invention, the narrow space drilling method, its steps are as follows:

a. Bring the drill pipe and the drive rod axially close to bend the shrapnel;

b. The support arm penetrates into the narrow space opposite to each other, so that the axis of the drill pipe is perpendicular to the surface to be drilled, and the front end of the drill pipe reaches the position to be drilled;

c. Turn on the power source to drive the transmission rod, shrapnel, and drill pipe to rotate synchronously, and use the support arm and shrapnel to force the drill pipe to feed into the drilling hole;

d. After the drill pipe has drilled more than two-thirds, lift the support arm, drive the two arc-shaped plates close together to stretch the shrapnel, continue to apply force with the support arm, so that the drill bit is completely inserted into the drill hole, and the lower end of the shrapnel straightens into the drill hole. Make the drill continue to feed;

e. Go to the given depth, lift the support arm, drive the two arc-shaped plates to separate, bend the shrapnel, drive the drill pipe out of the hole, withdraw the support arm, and complete the drilling.

It can also be like this:

The drilling device with the above-mentioned drill bit involved in the present invention, the narrow space drilling method, its steps are as follows:

a. Bring the drill pipe and the drive rod axially close to bend the shrapnel;

b. Fix the shaft sleeve 22 at the position to be drilled, the axis of the shaft sleeve 22 coincides with the axis of the drill pipe, and the support arm penetrates into the narrow space opposite to each other, so that the axis of the drill pipe is perpendicular to the surface to be drilled, and the front end of the drill pipe reaches The position to be drilled;

Fix the axle sleeve 22 at the desired drilling position, and it can be fixed by gluing.

c. Turn on the power source to drive the transmission rod, shrapnel, and drill pipe to rotate synchronously, and use the support arm and shrapnel to force the drill pipe to feed into the drilling hole;

d. After the drill pipe has drilled more than two-thirds, lift the support arm, drive the two arc-shaped plates close together to stretch the shrapnel, continue to apply force with the support arm, so that the drill bit is completely inserted into the drill hole, and the lower end of the shrapnel straightens into the drill hole. Make the drill continue to feed;

e. Go to the given depth, lift the support arm, drive the two arc-shaped plates to separate, bend the shrapnel, drive the drill pipe out of the hole, withdraw the support arm, and complete the drilling.

In the field of electric power, it is often necessary to fix the power line in the slit. The conventional method is as follows: the first step is to fix the screw in the slit; the second step is to connect the insulator screw; the third step is to fix the power line and the insulator connect.

Because fixing the screw rod in the slit is often not strong enough, the screw rod falls off, thus causing trouble for power transmission.

The invention also discloses a method for fixing the power line. The method can drill a hole in the slit and then fix the screw rod. This method can make the screw rod more stable. The steps are as follows:

a. Bring the drill pipe and the drive rod axially close to bend the shrapnel;

b. Fix the shaft sleeve 22 at the position to be drilled, the axis of the shaft sleeve 22 coincides with the axis of the drill pipe, and the support arm penetrates into the narrow space opposite to each other, so that the axis of the drill pipe is perpendicular to the surface to be drilled, and the front end of the drill pipe reaches The position to be drilled;

Fix the axle sleeve 22 at the position to be drilled, it can be fixed by gluing, or it can be clamped by a clamping device. Fixing the bushing 22 is not necessary, but is a preferred step.

c. Turn on the power source to drive the transmission rod, shrapnel, and drill pipe to rotate synchronously, and use the support arm and shrapnel to force the drill pipe to feed into the drilling hole;

d. After the drill pipe has drilled more than two-thirds, lift the support arm, drive the two arc-shaped plates close together to stretch the shrapnel, continue to apply force with the support arm, so that the drill bit is completely inserted into the drill hole, and the lower end of the shrapnel straightens into the drill hole. Make the drill continue to feed;

e. Go to a given depth, lift the support arm, drive the two arc-shaped plates to separate, bend the shrapnel, drive the drill pipe out of the hole, withdraw the support arm, and complete the drilling.

f. Inject cement mortar into the hole, and insert a screw into the cement mortar. After the cement hardens, connect the insulator to the screw, and then connect the power line to the insulator.

Those skilled in the art should know: 1. A part of the screw rod is sunk into the cement mortar, and the other part leaks out so that the insulator can be fixedly connected. 2. The insulator can be a ring-shaped ceramic product with threads in the middle hole. 3. The fixed connection between the insulator and the power line belongs to the prior art.

In summary, the above is only a preferred embodiment of the present invention, and all equivalent modifications and additions made in accordance with the present application are regarded as the technical scope of the present invention.

Claims (1)

1. a kind of boring method, the method is applied to a kind of drilling equipment,

The drilling equipment includes drilling rod and drive link, and drive link is located above drilling rod and both are coaxial, circumferential etc. above drilling rod Away from least two shrapnels are distributed with, shrapnel lower end is hinged on drilling rod upper end, and shrapnel upper end is hinged on drive link lower end, shrapnel middle part Along the outside lateral bend of drilling rod radial direction, shrapnel cross section is arc of the arc core towards drill rod axis, and the drive link is connected with The drive rod being coaxial therewith, drive rod are connected in a drive housing, are connected with drive housing vertical with drive rod axis Support arm, the transmission mechanism for being equipped with driving drive rod parallel with support arm, transmission mechanism are connected with power source,

The shrapnel rotational trajectory both sides be equipped with arc core towards rotational trajectory axis and axis it is parallel with drill rod axis or coincidence Arc panel, two arc panel arc dorsal parts are connected to actuating arm, and hinged two actuating arms middle part is in X-type,

It is characterized in that:

The step of boring method is：

A, by drilling rod and drive link axially adjacent to bending shrapnel；

B, support arm probes into the opposite narrow space in two sides, makes drill rod axis vertical with being intended to bore surfaces, and reach drilling rod front end and be intended to Bore position；

C, turn on the power source drive drive link, shrapnel, drilling rod synchronous rotary, bores drilling rod feed using support arm and shrapnel force Hole；

D, after rod boring is more than 2/3rds, support arm is lifted, two arc panels of driving, which are drawn close, stretches shrapnel, continues to be applied with support arm Power, makes drill bit enter drilling completely, and shrapnel stretches lower end and enters drilling, makes drill bit continue to be fed；

E, given depth is got into, lifts support arm, two arc panels of driving separate, and shrapnel bending, drives drilling rod to portal, withdraw from support arm, Complete drilling.