CN215034920U - Stainless steel pipeline welding centering device - Google Patents

Abstract

The utility model discloses a nonrust steel pipe line welding is to heart device, including external frame, external frame in upper portion have the splint that can move about from top to bottom, the splint both sides link to each other with two clamping device respectively, splint reciprocate can drive the lax or the clamp of clamping device tightly. The clamping device is composed of an upper V-shaped block and a lower V-shaped block, the upper V-shaped block is connected with the clamping plate, the lower V-shaped block is connected to the ball screw, the screw is driven by the motor, the distance between the two clamping devices can be adjusted, and therefore the two clamped pieces can move axially relative to each other. The stainless steel pipeline welding centering device can realize the clamping and centering alignment of a welded part, and is convenient for welding.

Description

Stainless steel pipeline welding centering device

Technical Field

The utility model relates to a to the heart device, especially relate to a stainless steel pipeline welding is to heart device.

Background

In the process of welding the stainless steel pipeline, manual centering, special fixture centering or V-shaped block centering is often adopted. The artificial centering not only has higher requirements on the experience of workers, but also has certain errors on centering. The centering error of the special fixture is small, but the special fixture cannot meet the centering requirement of stainless steel pipelines with different pipe diameters, namely, a plurality of sets of fixtures need to be prepared to meet the centering welding requirement of different pipe diameters, and the cost is increased. The V-shaped block has high centering accuracy, but because no clamping device is arranged, a stainless steel pipeline is easy to move during welding, so that the welding quality is reduced.

Disclosure of Invention

An object of the utility model is to overcome prior art's shortcoming, provide a device suitable for stainless steel pipeline is to heart, can be convenient carry out heart and centre gripping to stainless steel pipeline to the workman carries out follow-up weldment work, promotes stainless steel pipeline welded efficiency, promotes the welding success rate.

The utility model discloses a stainless steel pipeline welding centering device, which comprises an external frame, two clamping devices and two translation devices, wherein the two translation devices are respectively connected with one clamping device;

the external frame comprises a top plate and a bottom plate which are arranged in parallel at intervals up and down along the horizontal direction, a plurality of first supporting columns which are arranged along the vertical direction respectively penetrate through openings which are formed in the edges of four sides of a pressing plate, the upper ends and the lower ends of the plurality of first supporting columns are respectively fixed on the bottom wall of the top plate and the top wall of the bottom plate, the pressing plate is arranged below the top plate, a hydraulic cylinder is fixed in the middle of the top plate, the bottom of a hydraulic rod of the hydraulic cylinder which is arranged along the vertical direction is fixedly connected with the pressing plate, and the pressing plate can move up and down along the plurality of first supporting columns under the driving of the hydraulic rod;

the two translation devices are positioned on the left side and the right side of the bottom plate, each translation device comprises a motor fixed on the bottom plate, a driving gear is installed on an output shaft of each motor, two support plates which are arranged on the bottom plate at intervals in the left-right direction at intervals in the vertical direction, the left end and the right end of each second support column which are arranged in parallel in the front-back direction in the horizontal direction are respectively fixed on the left support plate and the right support plate, a lead screw is installed between the two second support columns in the direction parallel to the two second support columns, rolling bearings are respectively connected on the left side and the right side of the lead screw, the two rolling bearings are respectively installed in one support plate, one side of the lead screw penetrates through the rolling bearings and is connected with a driven gear, a lead screw nut is connected on the lead screw in a threaded manner, and the driven gear is meshed with the driving gear, the lead screw is connected with a lead screw nut, each second supporting column is respectively provided with a lower linear bearing, and the lead screws of the two translation devices are coaxially and oppositely arranged;

the two clamping devices respectively comprise a driving sliding block, a driven sliding block is arranged above the driving sliding block at intervals, a V-shaped groove is formed in the middle of the top surface of the driving sliding block and the middle of the bottom surface of the driven sliding block oppositely, a plurality of connecting rods arranged in the vertical direction are respectively connected to the front side and the rear side between the driving sliding block and the driven sliding block, the bottoms of the connecting rods are fixedly connected with the top wall of the driving sliding block, jacks are respectively formed in the driven sliding blocks at positions corresponding to the connecting rods, the connecting rods are respectively inserted into the correspondingly arranged jacks and are in sliding connection with the jacks, upper linear bearings are respectively arranged on the front side and the rear side of the driven sliding block, two guide rods respectively penetrate through one upper linear bearing, and the left end and the right end of each guide rod are respectively fixed on the pressing plate; two lower linear bearings of each translation device are respectively fixed in a driving sliding block of one clamping device, a nut of each linear bearing is meshed with the lead screw, and the nut of each linear bearing is fixedly connected with the driving sliding block.

The utility model has the advantages that: the welding centering work of the stainless steel pipeline reduces errors caused by manual centering, reduces the cost of using a special fixture, simplifies the welding centering process, does not depend on the experience of workers, and reduces the work difficulty of centering the pipeline. In addition, the movement of the pipeline during welding is avoided, and the welding success rate is improved.

Drawings

FIG. 1 is an overall structure diagram of a stainless steel pipeline welding centering device of the present invention;

FIG. 2 is a view of the external frame structure of the apparatus shown in FIG. 1;

FIG. 3 is a block diagram of a clamping assembly of the apparatus of FIG. 1;

FIG. 4 is a block diagram of a translation unit of the apparatus of FIG. 1;

FIG. 5 is a view showing the construction of a follower slide of the clamping device shown in FIG. 3;

fig. 6 is a schematic view showing the connection of the main moving parts in the device shown in fig. 1.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific examples.

The accompanying drawing shows that the stainless steel pipeline welding centering device of the utility model comprises an external frame 1, two clamping devices 2 and two translation devices 3; the two translatory devices 3 are each connected to a clamping device 2.

The external frame comprises a top plate 1-2 and a bottom plate 1-5 which are arranged in parallel at intervals up and down along the horizontal direction, a plurality of first supporting columns 1-4 arranged along the vertical direction respectively penetrate through openings formed in the edges of four sides of the pressing plate 1-3, and the upper ends and the lower ends of the plurality of first supporting columns 1-4 are respectively fixed on the bottom wall of the top plate 1-2 and the top wall of the bottom plate 1-5. The pressing plate 1-3 is arranged below the top plate, the hydraulic cylinder 1-1 is fixed in the middle of the top plate 1-2, the bottom of a hydraulic rod 1-6 of the hydraulic cylinder 1-1 arranged in the vertical direction is fixedly connected with the pressing plate 1-3, and the pressing plate 1-3 can move up and down along the first supporting columns 1-4 under the driving of the hydraulic rod 1-6.

The two translation devices 3 are positioned at the left side and the right side of the bottom plate 1-5, each translation device 3 comprises a motor 3-1 fixed on the bottom plate 1-5, an output shaft of the motor 3-1 is provided with a driving gear 3-2, two support plates 3-3 and 3-8 arranged at intervals left and right along the vertical direction are fixed on the bottom plate 1-5, the left end and the right end of two second support columns 3-4 arranged at intervals front and back along the horizontal direction are respectively fixed on the support plate 3-8 at the left side and the support plate 3-3 at the right side, a screw rod 3-7 is arranged between the two second support columns 3-4 along the direction parallel to the two second support columns 3-4, the left side and the right side of the screw rod 3-7 are respectively connected with a rolling bearing, the two rolling bearings are respectively arranged in a supporting plate, one side of the screw rod 3-7 penetrates through the rolling bearings and is connected with a driven gear, the screw rod is in threaded connection with a ball screw nut 3-5, and the driven gear is meshed with the driving gear. The screw rod 3-7 is connected with a screw rod nut, and each second supporting column 3-4 is respectively provided with a lower linear bearing 3-6. The motor is electrified to drive the screw rod to rotate, so that the translation of the clamping device is realized. The lead screws of the two translation devices 3 are coaxially and oppositely arranged.

The two clamping devices respectively comprise a driving slide block 2-3, a driven slide block 2-1 is arranged above the driving slide block 2-3 at intervals, a V-shaped groove is respectively and oppositely formed in the middle of the top surface of the driving slide block 2-3 and the middle of the bottom surface of the driven slide block 2-1, a plurality of connecting rods 2-2 arranged along the vertical direction are respectively connected to the front side and the rear side between the driving slide block 2-3 and the driven slide block 2-1, the bottoms of the connecting rods 2-2 are fixedly connected with the top wall of the driving slide block 2-3, jacks are respectively formed in the driven slide block 2-1 at the positions corresponding to the connecting rods 2-2, the connecting rods 2-2 are respectively inserted into the correspondingly arranged jacks and are in sliding connection with the jacks, the connecting rod is used for aligning the driving slide block 2-3 with the driven slide block 2-1, so that the situations of overturning or unstable holding and the like are avoided, and the driven slide block 2-1 is driven to move. As shown in fig. 6, upper linear bearings 1-8 are respectively installed on the front and rear sides of the driven slider 2-1, two guide rods 1-7 respectively penetrate through one upper linear bearing, and the left and right ends of each guide rod are respectively fixed on the pressing plates 1-3.

Two lower linear bearings 3-6 of each translation device 3 are respectively fixed in a driving slide block of a clamping device, and the ball screw nuts 3-5 are fixedly connected with the driving slide blocks 2-3 through screws, so that the axial fixation of the linear bearings is realized.

The working principle is as follows:

firstly, a stainless steel pipeline is placed on two driving sliding blocks 2-3 at the bottom, a hydraulic cylinder 1-1 is started, a hydraulic rod 1-6 is pushed out to drive a pressing plate 1-3 to move downwards, and as a driven sliding block 2-1 is connected with a guide rod 1-7 through an upper linear bearing 1-8 and the guide rod 1-7 is fixed on the pressing plate 1-3, the driven sliding block 2-1 moves downwards along with the pressing plate 1-3 until the driven sliding block 2-1 and the driving sliding blocks 2-3 clamp the stainless steel pipeline, so that the fixing work is completed; then starting the motors 3-1 at the two sides to enable the clamping devices 2 at the two sides to horizontally move, so that the stainless steel pipelines at the two ends are mutually attached; and starting welding after the welding is finished, resetting after the welding is finished, and preparing for next centering operation.

Claims (1)

1. The utility model provides a stainless steel pipeline welding is to heart device, includes external frame (1), its characterized in that: the device comprises two clamping devices (2) and two translation devices (3), wherein each translation device is connected with one clamping device;

the external frame comprises a top plate (1-2) and a bottom plate (1-5) which are arranged in parallel at intervals up and down along the horizontal direction, a plurality of first supporting columns (1-4) arranged along the vertical direction respectively penetrate through openings formed in the edges of four sides of a pressing plate (1-3), the upper ends and the lower ends of the plurality of first supporting columns are respectively fixed on the bottom wall of the top plate and the top wall of the bottom plate, the pressing plate is arranged below the top plate, a hydraulic cylinder is fixed in the middle of the top plate, the bottoms of hydraulic rods (1-6) of the hydraulic cylinders arranged along the vertical direction are fixedly connected with the pressing plate, and the pressing plate can move up and down along the plurality of first supporting columns under the driving of the hydraulic rods;

the two translation devices (3) are positioned on the left side and the right side of the bottom plate (1-5), each translation device comprises a motor (3-1) fixed on the bottom plate, a driving gear (3-2) is installed on an output shaft of the motor, two supporting plates arranged at intervals left and right in the vertical direction are fixed on the bottom plate, the left end and the right end of two second supporting columns (3-4) arranged at intervals front and back in the horizontal direction are respectively fixed on the supporting plate on the left side and the supporting plate (3-3) on the right side, a screw rod (3-7) is installed between the two second supporting columns in the direction parallel to the two second supporting columns, the left side and the right side of the screw rod are respectively connected with rolling bearings, the two rolling bearings are respectively installed in one supporting plate, one side of the screw rod penetrates through the rolling bearings and is connected with a driven gear, a ball screw nut is connected to the screw in a threaded manner, the driven gear is meshed with the driving gear, the screw is connected with a screw nut, each second supporting column is provided with a lower linear bearing (3-6), and the screws of the two translation devices (3) are coaxially and oppositely arranged;

the two clamping devices respectively comprise driving sliding blocks (2-3), driven sliding blocks (2-1) are arranged above the driving sliding blocks at intervals, V-shaped grooves are formed in the middle of the top surfaces of the driving sliding blocks and the middle of the bottom surfaces of the driven sliding blocks in a relative mode respectively, a plurality of connecting rods (2-2) arranged in the vertical direction are connected to the front side and the rear side between the driving sliding blocks and the driven sliding blocks respectively, the bottoms of the connecting rods are fixedly connected with the top wall of the driving sliding block, jacks are formed in the driven sliding blocks at positions corresponding to the connecting rods respectively, the connecting rods are inserted into the correspondingly arranged jacks respectively and are connected with the jacks in a sliding mode, upper linear bearings (1-8) are installed on the front side and the rear side of the driven sliding block respectively, and the two guide rods (1-7) respectively penetrate through the upper linear bearing and are fixed on the pressing plates (1-3) at the left end and the right end respectively (ii) a

Two lower linear bearings (3-6) of each translation device (3) are respectively fixed in a driving slide block of a clamping device, and the ball screw nut is fixedly connected with the driving slide block (2-3).

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