CN210937267U

CN210937267U - Pipe boring grab

Info

Publication number: CN210937267U
Application number: CN201921958174.3U
Authority: CN
Inventors: 侯帅迪; 李猛; 宋凯敏; 许彬彬; 李楠
Original assignee: Hebei Zhaopeng Construction Engineering Co ltd
Current assignee: Hebei Zhaopeng Construction Engineering Co ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-07-07
Anticipated expiration: 2029-11-12

Abstract

The utility model discloses a circular tube drilling fixture, which relates to the technical field of drilling fixtures and comprises a base, two vertical plates arranged on the base in a sliding way and a clamping component arranged on the vertical plates; the vertical plates are parallel to each other; the clamping assembly is arranged on the surface of one side, opposite to the two vertical plates, and comprises a screw rod arranged on the vertical plates and two pressing rods arranged on the screw rod; an accommodating groove is formed in the side surface of the vertical plate in the vertical direction, the screw is located in the accommodating groove, one end, far away from the base, of the screw penetrates out of the accommodating groove, and external threads with opposite rotation directions are arranged at two ends of the screw; one end of the pressing rod is provided with a threaded hole, the pressing rod is in threaded connection with the screw rod, and the surfaces of the two sides of the pressing rod are attached to the side wall of the accommodating groove. The utility model discloses have the centre gripping and stabilize, effect that drilling accuracy is high.

Description

Pipe boring grab

Technical Field

The utility model relates to a boring grab's technical field, in particular to pipe boring grab.

Background

The pipe is a main section bar, but wide application in each field such as mechanical industry, thermal equipment, oil geological drilling, and the pipe in use often needs drill hole on the pipe wall, and the drilling process is gone on the drilling machine, and the drilling in-process need use positioning fixture to press from both sides the tight fixed to the pipe.

The commonly used circular tube drilling positioning fixture mostly adopts the mode that the flat plate supports and presses the circular tube to fix the circular tube, but because the side surface of circular tube is the cambered surface, the contact surface of flat plate and circular tube is the plane, under the condition that the pressure is enough big, the circular tube still probably rotates relative to the flat plate, leads to the circular tube to take place the skew, influences drilling accuracy.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pipe boring grab has the stable, the high advantage of drilling precision of centre gripping.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a circular tube drilling clamp comprises a base, two vertical plates arranged on the base in a sliding mode and a clamping assembly arranged on the vertical plates;

the vertical plates are parallel to each other;

the clamping assembly is arranged on the surface of one side, opposite to the two vertical plates, and comprises a screw rod arranged on the vertical plates and two pressing rods arranged on the screw rod;

an accommodating groove is formed in the side surface of the vertical plate in the vertical direction, the screw is located in the accommodating groove, one end, far away from the base, of the screw penetrates out of the accommodating groove, and external threads with opposite rotation directions are arranged at two ends of the screw;

one end of the pressing rod is provided with a threaded hole, the pressing rod is in threaded connection with the screw rod, and the surfaces of the two sides of the pressing rod are attached to the side wall of the accommodating groove.

Through adopting above-mentioned technical scheme, place the steel pipe between two risers after, can make two distances and the steel pipe looks adaptation that support between the depression bar according to steel sheet size rotating screw rod, then adjust the distance between two risers, move two risers to the centre, make the tip that supports the depression bar support tightly on the steel pipe side surface, in the plane of perpendicular to steel pipe axis, there are four strong points in the outer peripheral face of steel pipe, press from both sides the steel pipe tight fixedly. The in-process of drilling can prevent effectively that the steel pipe from rotating, improves the drilling precision.

The utility model discloses further set up to: the end part of the pressing rod, far away from the screw rod, is fixedly connected with a cylinder;

the axis of the cylinder is perpendicular to the axis of the screw.

Through adopting above-mentioned technical scheme, because the side surface of steel pipe is the cambered surface, there is the difference in the diameter of different steel pipes moreover, at the end fixing cylinder who supports the depression bar, the side surface of cylinder can with the side surface laminating of steel pipe, the increase supports the area of contact between depression bar and the steel pipe, prevents to form the point contact between the tip of support depression bar and the side surface of steel pipe, the centre gripping effect is more stable.

The utility model discloses further set up to: and a hand wheel is arranged at one end of the screw rod, which is far away from the base.

Through adopting above-mentioned technical scheme, comfort level and convenient degree when reinforcing the rotating screw rod.

The utility model discloses further set up to: two groups of clamping assemblies are arranged on each vertical plate at intervals.

Through adopting above-mentioned technical scheme, set up two sets of centre gripping subassemblies along the axis direction of steel pipe, can prevent that drilling in-process steel pipe from guaranteeing the drilling precision at horizontal rotation.

The utility model discloses further set up to: the upper surface of the base is provided with a T-shaped groove along the direction vertical to the vertical plate, a T-shaped block is fixed on the lower surface of the vertical plate, and the T-shaped block is arranged in the T-shaped groove in a sliding manner;

the T-shaped groove is internally provided with a lead screw, the two ends of the lead screw are provided with external threads in opposite rotating directions, the T-shaped block is provided with a threaded hole and is in threaded connection with the lead screw, and one end of the lead screw penetrates out of the side wall of the T-shaped groove.

Through adopting above-mentioned technical scheme, the riser passes through T type piece and slides and set up in T type inslot to through two riser synchronous motion of lead screw control, can guarantee that two risers equal all the time to the distance at base center, it is more convenient to the location of work piece.

The utility model discloses further set up to: the two ends of the lower surface of the vertical plate extend downwards to be fixed with limiting blocks respectively, and the limiting blocks are attached to the side wall of the base.

Through adopting above-mentioned technical scheme, the riser passes through the stopper card on the base, guarantees that the riser is on a parallel with the axis of steel pipe all the time to guarantee to support the depression bar and can support tightly on the steel pipe side surface.

The utility model discloses further set up to: and a hand wheel is arranged at the end part of the lead screw penetrating out of the T-shaped groove.

Through adopting above-mentioned technical scheme, it is more convenient and laborsaving during the rotating lead screw.

To sum up, the utility model discloses a beneficial technological effect does:

1. after placing the steel pipe between two risers, can be according to steel sheet size rotating screw rod, make two distances and steel pipe looks adaptations that support between the depression bar, then adjust the distance between two risers through rotatory lead screw, move two risers to the centre, make the tip that supports the depression bar support tightly on the steel pipe side surface, in the plane of perpendicular to steel pipe axis, there are four strong points in the outer peripheral face of steel pipe, press from both sides the steel pipe tight fixedly. The steel pipe can be effectively prevented from rotating in the drilling process, and the drilling precision is improved;

2. the end part of the pressing rod is fixed with the cylinder, so that the contact area between the pressing rod and the surface of the steel pipe can be increased, and the clamping effect is enhanced.

Drawings

Fig. 1 is a schematic view of an overall structure according to an embodiment of the present invention.

Fig. 2 is a schematic view showing a connection relationship between the vertical plate and the base.

Fig. 3 is a schematic view of the clamping assembly and its connection structure with the vertical plate.

In the figure, 1, a base; 11. a T-shaped groove; 2. a vertical plate; 21. a containing groove; 22. a T-shaped block; 23. a limiting block; 3. a clamping assembly; 31. a screw; 32. a pressing rod; 33. a cylinder; 4. and a lead screw.

Detailed Description

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

Referring to fig. 1, a circular tube drilling fixture disclosed in an embodiment of the present invention includes a base 1, two vertical plates 2 and a clamping assembly 3, wherein the two vertical plates 2 are relatively disposed on the base 1, and the two vertical plates 2 are parallel to each other and can slide on the base 1; the clamping assemblies 3 are arranged on the opposite side surfaces of the two vertical plates 2, and two groups of the clamping assemblies 3 are arranged on each vertical plate 2 at intervals.

Referring to fig. 1 and 2, the vertical plate 2 is perpendicular to the upper surface of the base 1, two ends of the lower surface of the vertical plate 2 respectively extend downwards to fix a limiting block 23, and the side surface of the limiting block 23 is smoothly attached to the side surface of the base 1; t type groove 11 has been seted up along the direction of perpendicular to riser 2 side surface to the base 1 upper surface, fixedly connected with on the lower surface of riser 2 with T type groove 11 matched with T type piece 22, T type piece 22 slides respectively and sets up in T type groove 11. A lead screw 4 is arranged in the T-shaped groove 11, threads with opposite rotation directions are arranged at two ends of the lead screw 4, one end of the lead screw 4 penetrates out of the T-shaped groove 11, and a hand wheel is fixed at the penetrating end; threaded holes are formed in the T-shaped block 22, the lead screw 4 is in threaded connection with the T-shaped block 22, and the two vertical plates 2 can be controlled to slide towards the middle or two sides simultaneously when the lead screw 4 is rotated.

Referring to fig. 1 and 3, two parallel accommodating grooves 21 are formed on the side surface of the vertical plate 2, each accommodating groove 21 is formed along the vertical direction, and the upper end and the lower end of each accommodating groove 21 are closed. Each group of clamping assemblies 3 comprises a screw rod 31 and two pressing rods 32, the lower end of the screw rod 31 is rotatably connected to the bottom surface of the accommodating groove 21, the upper end of the screw rod 31 penetrates out of the accommodating groove 21, opposite screw threads are arranged at the two ends of the screw rod 31, threaded holes are respectively formed in one ends of the two pressing rods 32, the pressing rods 32 are all in threaded connection with the screw rod 31, the pressing rods 32 extend out of the accommodating groove 21, and the side surfaces of the pressing rods 32 are attached to the side walls of the accommodating groove 21. The upper ends of the screws 31 are respectively fixed with handwheels, and when the screws 31 are rotated, the two pressing rods 32 can simultaneously move towards the middle or two sides along the axial direction of the screws 31.

The end of the abutting rod 32 far away from the screw 31 is fixedly connected with a cylinder 33, and the axis of the cylinder 33 is perpendicular to the axis of the screw 31. The side surface of the steel pipe is an arc surface, the diameters of different steel pipes are different, when the side surface of the cylinder 33 is abutted against the steel pipe, the contact area between the end of the pressure resisting rod 32 and the surface of the steel pipe can be increased, and the abutting effect cannot be changed due to the diameters of the steel pipes.

The implementation principle of the embodiment is as follows:

after the clamp is placed on an operation table of a drilling machine, the clamp is fixed at the center of the operation table, a drill bit is enabled to be opposite to the center of the base 1, the screw rod 4 is rotated firstly to enable the two vertical plates 2 to move towards two sides synchronously, the steel pipe is placed between the two vertical plates 2, then the screw rod 31 is rotated according to the diameter of the steel pipe, the distance between the two pressing rods 32 in the clamping assembly 3 is adjusted to be matched with the steel pipe, then the screw rod 4 is rotated again, the two vertical plates 2 are controlled to move towards the steel pipe until a cylinder 33 at the end part of the pressing rod 32 is pressed on the steel pipe, the steel pipe is fixed, when a gap exists between the cylinder 33 and the side surface of the steel pipe, the screw rod 31 can be.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a pipe boring grab which characterized in that: comprises a base (1), two vertical plates (2) arranged on the base (1) in a sliding way and a clamping component (3) arranged on the vertical plates (2);

the vertical plates (2) are parallel to each other;

the clamping assembly (3) is arranged on the surface of one side, opposite to the two vertical plates (2), of each vertical plate (2), and the clamping assembly (3) comprises a screw rod (31) arranged on the corresponding vertical plate (2) and two pressing rods (32) arranged on the screw rod (31);

an accommodating groove (21) is formed in the side surface of the vertical plate (2) in the vertical direction, the screw (31) is located in the accommodating groove (21), one end, far away from the base (1), of the screw (31) penetrates out of the accommodating groove (21) from the inside, and external threads with opposite rotation directions are arranged at two ends of the screw (31);

one end of the pressing rod (32) is provided with a threaded hole, the pressing rod (32) is in threaded connection with the screw rod (31), and the surfaces of the two sides of the pressing rod (32) are attached to the side wall of the accommodating groove (21).

2. The round tube drilling jig of claim 1, characterized in that: the end part of the pressing rod (32) far away from the screw rod (31) is fixedly connected with a cylinder (33);

the axis of the cylinder (33) is perpendicular to the axis of the screw (31).

3. The round tube drilling jig of claim 1, characterized in that: and a hand wheel is arranged at one end of the screw rod (31) far away from the base (1).

4. A round tube drilling jig according to any one of claims 1 to 3, characterized in that: two groups of clamping assemblies (3) are arranged on each vertical plate (2) at intervals.

5. The round tube drilling jig of claim 1, characterized in that: the upper surface of the base (1) is provided with a T-shaped groove (11) along the direction vertical to the vertical plate (2), a T-shaped block (22) is fixed on the lower surface of the vertical plate (2), and the T-shaped block (22) is arranged in the T-shaped groove (11) in a sliding manner;

the T-shaped groove is characterized in that a lead screw (4) is arranged in the T-shaped groove (11), external threads with opposite turning directions are arranged at two ends of the lead screw (4), a threaded hole is formed in the T-shaped block (22), the T-shaped block (22) is in threaded connection with the lead screw (4), and one end of the lead screw (4) penetrates out of the side wall of the T-shaped groove (11).

6. The round tube drilling jig of claim 5, wherein: the two ends of the lower surface of the vertical plate (2) extend downwards to be fixed with limiting blocks (23), and the limiting blocks (23) are attached to the side wall of the base (1).

7. The round tube drilling jig of claim 5, wherein: and a hand wheel is arranged at the end part of the lead screw (4) penetrating out of the T-shaped groove (11).