CN215966475U

CN215966475U - Electric hand drill vertical drilling auxiliary device for railway vehicle

Info

Publication number: CN215966475U
Application number: CN202122505542.2U
Authority: CN
Inventors: 刘兆君; 赵强; 苏浩洋; 毕福辰
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-03-08
Anticipated expiration: 2031-10-18

Abstract

Vertical drilling auxiliary device of electric hand drill for rail vehicle belongs to electric hand drill drilling technical field for rail vehicle, and it includes fixed baseplate, floating base, spring, centre gripping cover and lock sleeve. The utility model has the beneficial effects that: this auxiliary device utilizes the guide post can ensure that drill bit and predrilling action face are vertical state to ensure that drilling is perpendicular with the action face, drilling accuracy is high, labour saving and time saving, work efficiency is high. The auxiliary device utilizes the limiting cylinder to limit the maximum drilling depth of the drill bit so as to avoid the electric hand drill from gouging the action surface. The shape of the bottom surface of the fixed base of the auxiliary device can be the same as that of the action surface of the pre-drilled hole, so that the fixed base is in seamless fit with the action surface of the pre-drilled hole; the fixed base can also be the magnetic force piece that has strong magnetism, can directly adsorb on action faces such as steel construction lateral wall or roof during the use, reduces handheld dynamics.

Description

Electric hand drill vertical drilling auxiliary device for railway vehicle

Technical Field

The utility model belongs to the technical field of electric hand drill drilling for rail vehicles, and particularly relates to an auxiliary device for vertical drilling of an electric hand drill for a rail vehicle.

Background

The manufacturing process of the vehicle body of the rail vehicle such as the high-speed rail involves the drilling operation of a large number of electric hand drills on plane or arc curved plates, and when the electric hand drills are used for drilling holes on the plates, an operator needs to control the feeding direction and angle of a drill bit so as to ensure that the drilled holes are fed along the normal direction of the surface of the plate.

As shown in figure 1, the main structure of the electric hand drill 1 comprises a handheld machine body 1-1, a fixed end 1-2, a rotating end 1-3 and a drill bit 1-4, wherein the fixed end 1-2 is fixedly connected to the front end of the handheld machine body 1-1, the rotating end 1-3 is rotatably connected to the front end of the fixed end 1-2, and the drill bit 1-4 is fixedly connected to the front end of the rotating end 1-3.

When the experience of an operator is insufficient, the energy or physical strength is reduced, and the drilling direction is at the side wall or upward viewing angle, the drilling angle of the electric hand drill 1 is difficult to control, the inclination condition which is not perpendicular to the surface of the vehicle body is easy to occur, the installation requirements of parts such as a countersunk head screw of a railway vehicle can not be met, and even a workpiece is scrapped, so that the economic loss is caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a vertical drilling auxiliary device for an electric hand drill for a railway vehicle, which aims to solve the technical problems that when the existing electric hand drill is used for drilling holes on a plate of a railway vehicle body, the drilling angle of the electric hand drill is difficult to control, the feeding direction of a drill bit is not coincident with the normal direction of the surface of the plate easily, and further the drilling angle is inclined and the verticality is poor due to the influence of various factors such as the curved surface shape, the inclination angle, the proficiency and the energy of an operator, the physical power state and the like.

The technical scheme adopted by the utility model for solving the technical problem is as follows:

the auxiliary device for vertically drilling the holes by the electric hand drill for the rail vehicle is characterized by comprising a fixed base, a floating base, a spring, a clamping sleeve and a locking sleeve;

two vertical and parallel guide posts are fixed at two ends of the fixed base, external threads are arranged at the upper sections of the guide posts, a polish rod is arranged at the lower sections of the guide posts, and a spring is sleeved on the lower sections;

a clamping sleeve through hole for fixing the clamping sleeve is formed in the center of the floating base, and two guide through holes for the guide columns to penetrate through are formed in the two ends of the floating base respectively; the bottom surfaces of the two ends of the floating base are fixedly connected with a limiting cylinder respectively, the central lines of the two limiting cylinders and the central lines of the two guide through holes are superposed in a one-to-one correspondence mode, the inner diameter of each limiting cylinder is larger than the outer diameter of each guide column, the outer diameter of each limiting cylinder is smaller than the inner diameter of each spring, and the height of each limiting cylinder is smaller than the natural length of each spring;

the floating base is arranged above the fixed base, the upper sections of the two guide posts correspondingly penetrate through the limiting cylinders and the guide through holes in sequence one by one and then are in threaded connection with the limiting nuts, and the limiting cylinders are sleeved on the lower sections and are positioned in the springs;

the whole clamping sleeve is of a reducing sleeve structure, the inner diameter of an upper sleeve of the clamping sleeve is larger than that of a lower sleeve, the upper sleeve is provided with external threads, the outer side of the middle part of the clamping sleeve is fixedly connected with a ring stand, the inner diameter of the upper sleeve is equal to the outer diameter of a fixed end of an electric hand drill, the lower sleeve is arranged in a through hole of the clamping sleeve, and the ring stand is arranged on a floating base around the through hole of the clamping sleeve;

the locking sleeve is provided with an internal thread, and the locking sleeve is in threaded connection with the upper sleeve.

The utility model has the beneficial effects that: this auxiliary device utilizes the guide post can ensure that drill bit and predrilling action face are vertical state to ensure that drilling is perpendicular with the action face, drilling accuracy is high, labour saving and time saving, work efficiency is high. The auxiliary device utilizes the limiting cylinder to limit the maximum drilling depth of the drill bit so as to avoid the electric hand drill from gouging the action surface. The shape of the bottom surface of the fixed base of the auxiliary device can be the same as that of the action surface of the pre-drilled hole, so that the fixed base is in seamless fit with the action surface of the pre-drilled hole; the fixed base can also be the magnetic force piece that has strong magnetism, can directly adsorb on action faces such as steel construction lateral wall or roof during the use, reduces handheld dynamics.

Drawings

Fig. 1 is a schematic structural view of an electric hand drill for a railway vehicle.

Fig. 2 is a schematic structural diagram of the vertical drilling auxiliary device of the electric hand drill for the railway vehicle.

Fig. 3 is an exploded view of the vertical drilling aid for a hand drill for a railway vehicle according to the present invention.

Fig. 4 is a schematic view of the assembled structure of the fixed base and the spring according to the present invention.

Fig. 5 is a schematic structural view of the grip sleeve of the present invention.

Fig. 6 is a schematic view of the vertical drilling auxiliary device of the electric hand drill for the railway vehicle, provided with the spring in the original state.

Fig. 7 is a front view of the structure of fig. 6.

Fig. 8 is a schematic view of the vertical drilling aid of the electric hand drill for railway vehicles according to the present invention in which the spring is compressed.

Fig. 9 is a front view of the structure of fig. 8.

Detailed Description

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

As shown in fig. 2 to 9, the vertical drilling assistance device for an electric hand drill for a railway vehicle of the present invention includes: the device comprises a fixed base 2, a floating base 3, a spring 4, a clamping sleeve 5 and a locking sleeve 6; two vertical and parallel guide columns 2-1 are fixed at two ends of the fixed base 2, an external thread is arranged on the upper section 2-1-1 of the guide column 2-1, the lower section 2-1-2 of the guide column 2-1 is a polished rod, and a spring 4 is sleeved on the lower section 2-1-2. The bottom surface shape of the fixed base 2 is the same as the shape of the action surface of the pre-drilled hole of the electric hand drill 1, and the seamless joint of the fixed base 2 and the action surface of the pre-drilled hole is realized. Fixed baseplate 2 can be the magnetic force piece that has the strong magnetism, can directly adsorb on action faces such as steel construction lateral wall or roof during the use, reduces handheld dynamics.

A clamping sleeve through hole 3-1 for fixing the clamping sleeve 5 is formed in the center of the floating base 3, and two guide through holes 3-2 for the guide columns 2-1 to penetrate through are formed in the two ends of the floating base 3 respectively; the bottom surfaces of two ends of the floating base 3 are fixedly connected with a limiting cylinder 3-3 respectively, the central lines of the two limiting cylinders 3-3 and the central lines of the two guide through holes 3-2 are coincided in a one-to-one correspondence mode, the inner diameter of the limiting cylinder 3-3 is larger than the outer diameter of the guide column 2-1, the outer diameter of the limiting cylinder 3-3 is smaller than the inner diameter of the spring 4, and the height of the limiting cylinder 3-3 is smaller than the natural length of the spring 4.

The floating base 3 is arranged above the fixed base 2, the upper sections 2-1-1 of the two guide posts 2-1 correspondingly penetrate through the limiting cylinders 3-3 and the guide through holes 3-2 in sequence one by one and then are in threaded connection with the limiting nuts 2-2, and the limiting nuts 2-2 are used for limiting the floating base 3 not to be separated from the two guide posts 2-1; the limiting cylinder 3-3 is sleeved on the lower section 2-1-2 and is positioned inside the spring 4, and the limiting cylinder 3-3 is used for limiting the maximum drilling depth of the drill bit 1-4.

The whole clamping sleeve 5 is of a reducing sleeve structure, the inner diameter of an upper sleeve 5-1 of the clamping sleeve 5 is larger than the inner diameter of a lower sleeve 5-2, the upper sleeve 5-1 is provided with external threads, the outer side of the middle part of the clamping sleeve 5 is fixedly connected with a ring stand 5-3, the inner diameter of the upper sleeve 5-1 is equal to the outer diameter of a fixed end 1-2 of an electric hand drill 1, the lower sleeve 5-2 is arranged in a through hole 3-1 of the clamping sleeve, and the ring stand 5-3 is arranged on a floating base 3 at the periphery of the through hole 3-1 of the clamping sleeve; the locking sleeve 6 is provided with internal threads, and the locking sleeve 6 is in threaded connection with the upper sleeve 5-1. The inside of the upper sleeve 5-1 and the outside of the locking sleeve 6 are provided with knurls for increasing the friction.

When the spring 4 is in an original length state, the drill bits 1-4 are positioned between the fixed base 2 and the floating base 3; when the limiting cylinder 3-3 falls on the fixed base 2, the rotating end 1-3 is positioned between the fixed base 2 and the floating base 3.

When the electric hand drill vertical drilling auxiliary device for the rail vehicle is used, as shown in fig. 6 to 9, the rotating end 1-3 and the drill bit 1-4 of the electric hand drill 1 penetrate through the upper sleeve 5-1, the fixed end 1-2 is inserted into the upper sleeve 5-1 and is locked and positioned through the locking sleeve 6, and at the moment, as shown in fig. 6 and 7, the spring 4 is in an original uncompressed state; then, the electric hand drill 1 together with the auxiliary device of the utility model is moved to a pre-drilling hole, the bottom surface of the fixed base 2 is attached to the pre-drilling action surface, a power supply is started to start drilling, as shown in fig. 8 and 9, the drill bits 1-4 vertically drill into the action surface under the guiding action of the two guide posts 2-1, the spring 4 is gradually compressed in the drilling process until the limiting cylinders 3-3 fall on the fixed base 2, the spring 4 is not compressed any more, the drill bits 1-4 cannot advance any more, and the drilling is finished. The vertical drilling auxiliary device of the electric hand drill for the railway vehicle can ensure that the drill bits 1-4 are vertical to the pre-drilling action surface, and is high in drilling precision, time-saving and labor-saving.

Claims

1. The auxiliary device for vertically drilling the holes by the electric hand drill for the rail vehicle is characterized by comprising a fixed base (2), a floating base (3), a spring (4), a clamping sleeve (5) and a locking sleeve (6);

two vertical and parallel guide columns (2-1) are fixed at two ends of the fixed base (2), external threads are arranged on the upper sections (2-1-1) of the guide columns (2-1), the lower sections (2-1-2) of the guide columns (2-1) are polished rods, and the springs (4) are sleeved on the lower sections (2-1-2);

a clamping sleeve through hole (3-1) for fixing the clamping sleeve (5) is formed in the center of the floating base (3), and two guide through holes (3-2) for the guide columns (2-1) to penetrate through are formed in the two ends of the floating base (3); the bottom surfaces of two ends of the floating base (3) are fixedly connected with a limiting cylinder (3-3), the central lines of the two limiting cylinders (3-3) and the central lines of the two guide through holes (3-2) are correspondingly superposed one by one, the inner diameter of each limiting cylinder (3-3) is larger than the outer diameter of each guide column (2-1), the outer diameter of each limiting cylinder (3-3) is smaller than the inner diameter of each spring (4), and the height of each limiting cylinder (3-3) is smaller than the natural length of each spring (4);

the floating base (3) is arranged above the fixed base (2), the upper sections (2-1-1) of the two guide columns (2-1) correspondingly penetrate through the limiting cylinders (3-3) and the guide through holes (3-2) one by one in sequence and then are in threaded connection with the limiting nuts (2-2), and the limiting cylinders (3-3) are sleeved on the lower sections (2-1-2) and are positioned in the springs (4);

the whole clamping sleeve (5) is of a reducing sleeve structure, the inner diameter of an upper sleeve (5-1) of the clamping sleeve (5) is larger than that of a lower sleeve (5-2), the upper sleeve (5-1) is provided with external threads, a loop platform (5-3) is fixedly connected to the outer side of the middle of the clamping sleeve (5), the inner diameter of the upper sleeve (5-1) is equal to the outer diameter of a fixed end (1-2) of an electric hand drill (1), the lower sleeve (5-2) is arranged in a clamping sleeve through hole (3-1), and the loop platform (5-3) is arranged on a floating base (3) on the periphery of the clamping sleeve through hole (3-1);

the locking sleeve (6) is provided with internal threads, and the locking sleeve (6) is in threaded connection with the upper sleeve (5-1).

2. A vertical drilling aid for electric hand drills for rail vehicles as claimed in claim 1, characterised in that the base surface of the fixed base (2) is shaped to be the same as the active surface of the electric hand drill (1).

3. The vertical drilling auxiliary device of the electric hand drill for the railway vehicle as claimed in claim 1, wherein the fixed base (2) is a magnetic block which can be adsorbed on the action surface of the steel structure.

4. Vertical drilling aid for electric hand drills for railway vehicles, according to claim 1, characterised in that the inner part of the upper sleeve (5-1) and the outer part of the locking sleeve (6) are provided with knurling for increasing the friction.