阅读说明：本技术 等离子自动焊背气保护装置 (Plasma automatic welding back gas protection device ) 是由 曲广增 王文富 魏善耀 于 2020-05-28 设计创作，主要内容包括：本发明涉及一种等离子自动焊背气保护装置,属于等离子自动焊背气保护技术领域,包括轴,轴上依次设有轴套甲、轴套乙和轴套丙,轴套甲上方设有调节固定丝杆甲,调节固定丝杆甲一端与轴套甲固定连接、另一端设有固定连接的背气保护装置,所述轴套乙上设有若干个调节固定丝杆乙,调节固定丝杆乙通过轴套乙与轴活动连接,所述轴套丙下方设有配重杆,该装置结构简单,容易操作,通过调节固定丝杆乙与筒体内壁固定连接,配重杆和调节固定丝杆甲分别位于轴1的两端,利用杠杆原理使得背气保护装置可稳定的与筒体内壁滑动连接,实现了等离子焊接背气保护工装无人操作,确保了背气盒使用时的稳定性,降低了工人的劳动强度,提高了生产效率。(The invention relates to a plasma automatic back gas welding protection device, which belongs to the technical field of plasma automatic back gas welding protection and comprises a shaft, wherein a shaft sleeve A, a shaft sleeve B and a shaft sleeve C are sequentially arranged on the shaft, an adjusting and fixing screw rod A is arranged above the shaft sleeve A, one end of the adjusting and fixing screw rod A is fixedly connected with the shaft sleeve A, the other end of the adjusting and fixing screw rod A is fixedly connected with the back gas protection device, a plurality of adjusting and fixing screw rods B are arranged on the shaft sleeve B, the adjusting and fixing screw rods B are movably connected with the shaft through the shaft sleeve B, a balance weight rod is arranged below the shaft sleeve C, the device has a simple structure and is easy to operate, the balance weight rod and the adjusting and fixing screw rod A are fixedly connected with the inner wall of a cylinder body through the adjusting and fixing screw rod B and are respectively positioned at two ends of a shaft 1, the back gas protection device, the stability of the back air box in use is ensured, the labor intensity of workers is reduced, and the production efficiency is improved.)

1. The utility model provides an automatic back of body gas protection device that welds of plasma which characterized in that: including axle (1), be equipped with axle sleeve first (21), axle sleeve second (31) and axle sleeve third (41) on axle (1) in proper order, axle sleeve first (21) top is equipped with adjusts fixed screw first (2), adjusts fixed screw first (2) one end and axle sleeve first (21) fixed connection, the other end and is equipped with fixed connection's back of the body gas protection device (6), be equipped with a plurality of on axle sleeve second (31) and adjust fixed screw second (3), adjust fixed screw second (3) through axle sleeve second (31) and axle (1) swing joint, axle sleeve third (41) below is equipped with counterweight rod (4).

2. The plasma automatic weld back gas protection device of claim 1, wherein: one end of the adjusting and fixing screw rod B (3) is fixedly connected with the shaft sleeve B (31), and the other end of the adjusting and fixing screw rod B is provided with an elastic pad (32).

3. The plasma automatic weld back gas protection device of claim 1, wherein: the number of the adjusting and fixing screw rods B (3) is four.

4. The plasma automatic weld back gas protection device of claim 3, wherein: and the radial included angle between the adjacent adjusting and fixing screw rods B (3) is 90 degrees.

5. The plasma automatic weld back gas protection device of claim 1, wherein: one end of the counterweight rod (4) is fixedly connected with the shaft sleeve third (41), and the other end of the counterweight rod is provided with a counterweight iron (5) which is detachably connected.

6. The plasma automatic weld back gas protection device of claim 1, wherein: back of the body gas protection device (6) include with regulation fixed screw first (2) fixed connection's fixing base (61), be equipped with guide bar (62) on fixing base (61), be equipped with fixed connection's back of the body gas box (63) on guide bar (62) one end and fixing base (61) swing joint, the other end, be equipped with pulley (64) on the back of the body gas box (63).

7. The plasma automatic weld back gas protection device of claim 6, wherein: the guide rod (62) is provided with a spring, and the spring is positioned between the fixed seat (61) and the back air box (63).

8. The plasma automatic weld back gas protection device of claim 1, wherein: the adjusting and fixing screw rod A (2) and the adjusting and fixing screw rod B (3) are telescopic rods with adjustable lengths.

9. The plasma automatic weld back gas protection device of claim 8, wherein: and the two ends of the adjusting and fixing screw rod A (2) and the adjusting and fixing screw rod B (3) are telescopic rods with adjustable lengths.

Technical Field

The invention relates to a plasma automatic welding back gas protection device, in particular to a barrel plasma automatic welding back gas protection device, and belongs to the technical field of plasma automatic welding back gas protection.

Background

The metal plasma welding is one-side welding and two-side forming, and in addition to the protection of the high temperature molten pool on the front side of the welding seam, measures are also taken on the back side of the welding seam to block the oxidation of oxygen in the air to the welding seam. Argon is generally used as a protective medium. The device that can be used to implement the gas protection on the back of the weld is called a "back gas protection device". In the plasma welding process of the thin-wall shell ring seam of the container tank car, the back of the ring seam needs to be protected by argon by a back gas protection device so as to prevent the welding seam from being oxidized.

Because of the influence of the roundness of the thin-wall cylinder, the gas backing box needs a constant upward jacking force, and when the cylinder rotates to perform girth welding, the non-roundness of the cylinder can be overcome, and the gas backing box is always attached to the cylinder. Traditional back of body gas protection device sets up the spring in back of the body gas box lower part, so that the spring is as the ascending jacking force of back of the body gas box, but, after using a period, spring force loses efficacy gradually, cause back of the body gas box holding power not enough, produce the clearance between back of the body gas box and barrel, lead to gas leakage, influence the welding seam quality, so at present when barrel circumferential weld plasma welding, need alone to operate current plasma welding back of the body gas protection frock in the barrel, along with the rotation of barrel, need the position of continuous adjustment back of the body gas protection frock, the cost of labor has been increased, be difficult to realize back of the body gas protection frock unmanned on duty, and the poor stability of back of the body gas protection frock. In order to realize the stability of the plasma welding back gas protection tool during unmanned operation and use of a back gas box, the automatic ion welding back gas protection device is researched and developed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a plasma automatic welding back gas protection device.

The technical scheme for solving the technical problems is as follows:

the utility model provides an automatic back of body gas protection device that welds of plasma, includes the axle, epaxial axle sleeve first, axle sleeve second and the axle sleeve third of being equipped with in proper order, and axle sleeve first top is equipped with adjusts fixed screw rod first, and it is equipped with fixed connection's back of body gas protection device with axle sleeve first fixed connection, the other end to adjust fixed screw rod first one end, be equipped with a plurality of on the axle sleeve second and adjust fixed screw rod second, adjust fixed screw rod second and pass through axle sleeve second and axle swing joint, axle sleeve third of the body below is equipped with the counter weight.

Preferably, one end of the adjusting and fixing screw rod B is fixedly connected with the shaft sleeve B, and the other end of the adjusting and fixing screw rod B is provided with an elastic cushion.

Preferably, the number of the adjusting fixing screw rods B is four.

Preferably, the included angle between the radial directions of the adjacent adjusting and fixing screw rods is 90 degrees.

Preferably, one end of the counterweight rod is fixedly connected with the shaft sleeve C, and the other end of the counterweight rod is provided with a counterweight iron which is detachably connected.

Preferably, the back gas protection device comprises a fixing seat fixedly connected with the adjusting fixed screw rod A, a guide rod is arranged on the fixing seat, one end of the guide rod is movably connected with the fixing seat, a back gas box fixedly connected with the other end of the guide rod is arranged on the other end of the guide rod, and a pulley is arranged on the back gas box.

Preferably, a spring is arranged on the guide rod and is positioned between the fixed seat and the back air box.

Preferably, the adjusting and fixing screw rod A and the adjusting and fixing screw rod B are telescopic rods with adjustable lengths.

Preferably, both ends of the adjusting and fixing screw rod A and the adjusting and fixing screw rod B are telescopic rods with adjustable lengths.

Compared with the prior art, the invention has the beneficial effects that: the device simple structure, easy to operate, through adjusting solid fixed screw second and barrel inner wall fixed connection, the balance weight pole is located the both ends of axle 1 respectively with adjusting solid fixed screw first, utilize lever principle make the back of the body gas protection device can be stable with barrel inner wall sliding connection, realized plasma welding back of the body gas protection frock unmanned operation, stability when having ensured the back of the body gas box use, reduced workman's intensity of labour, improved production efficiency, reduced manufacturing cost simultaneously.

Drawings

FIG. 1 is a partial schematic view of the structure of the present invention.

Fig. 2 is a partial schematic view of the structure of the present invention.

In the figure, 1, axis; 2. adjusting and fixing the screw rod A; 21. a shaft sleeve A; 3. adjusting the fixed screw rod B; 31. a shaft sleeve B; 32. an elastic pad; 4. a weight lever; 41. a shaft sleeve C; 5. a counterweight iron; 6. a back gas protection device; 61. a fixed seat; 62. a guide bar; 63. a back gas box; 64. a pulley; 7. and (4) a cylinder body.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

As shown in fig. 1-2, a plasma automatic back gas welding protection device comprises a shaft 1, wherein a shaft sleeve a 21, a shaft sleeve b 31 and a shaft sleeve c 41 are sequentially arranged on the shaft 1, an adjusting fixed screw rod a 2 is arranged above the shaft sleeve a 21, one end of the adjusting fixed screw rod a 2 is fixedly connected with the shaft sleeve a 21, and the other end of the adjusting fixed screw rod a 2 is fixedly connected with a back gas protection device 6, a plurality of adjusting fixed screw rods b 3 are arranged on the shaft sleeve b 31, the adjusting fixed screw rods b 3 are movably connected with the shaft 1 through the shaft sleeve b 31, and a weight rod 4 is arranged below the shaft sleeve c 41.

One end of the adjusting and fixing screw rod B3 is fixedly connected with the shaft sleeve B31, and the other end of the adjusting and fixing screw rod B is provided with an elastic cushion 32.

The number of the adjusting and fixing screw rods B3 is four.

And the radial included angle between adjacent adjusting and fixing screw rods B3 is 90 degrees.

One end of the counterweight rod 4 is fixedly connected with the shaft sleeve third 41, and the other end of the counterweight rod is provided with a counterweight iron 5 which is detachably connected.

Back of the body gas protection device 6 include with first 2 fixed connection's of regulation fixed screw fixing base 61, be equipped with guide bar 62 on the fixing base 61, be equipped with fixed connection's back of the body gas box 63 on guide bar 62 one end and fixing base 61 swing joint, the other end, be equipped with pulley 64 on the back of the body gas box 63.

The guide rod 62 is provided with a spring which is positioned between the fixed seat 61 and the back air box 63.

And the adjusting and fixing screw rod A2 and the adjusting and fixing screw rod B3 are telescopic rods with adjustable lengths.

And the two ends of the adjusting and fixing screw rod A2 and the adjusting and fixing screw rod B3 are telescopic rods with adjustable lengths.

When the device works, the device is put into a barrel body 7 (as shown in figure 2), the free end of an adjusting and fixing screw rod B3 is fixedly connected with the inner wall of the barrel body 7 after stretching, a balance weight iron 5 is arranged on a balance weight rod 4, a back gas protection device 6 arranged on the adjusting and fixing screw rod A2 is adjusted and connected with the inner wall of the barrel body 7 and then locks the telescopic rod of the adjusting and fixing screw rod A2, when the adjusting and fixing screw rod B3 and the barrel body 7 rotate, the adjusting and fixing screw rod A2 is always kept upward, the balance weight rod 4 is kept downward under the action of gravity, the back gas protection device 6 slides above the inner wall of the barrel body 7 through a pulley 64, the sliding process can be carried out through the acting force of a spring without adjustment so as to avoid the problem that the clamping or gas leakage affects the quality of a welding seam, the device has simple structure and easy operation, the balance weight rod 4 and the adjusting and fixing screw, utilize lever principle make back of body gas protection device 6 can be stable with barrel 7 inner wall sliding connection, realized plasma welding back of body gas protection frock unmanned operation, guaranteed the stability when back of body gas box 63 uses, reduced workman's intensity of labour, improved production efficiency, reduced manufacturing cost simultaneously.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.