Bearing bush trimming device

Abstract

The utility model relates to a bearing bush finishing device which comprises an argon arc welding gun body. The main ceramic nozzle is arranged at one end of the argon arc welding gun body; the connecting piece comprises a secondary ceramic nozzle, a clamping mechanism and a top sealing cover, and the secondary ceramic nozzle is arranged outside the main ceramic nozzle and comprises a ceramic nozzle branch pipe; the clamping mechanism is arranged in the secondary ceramic nozzle; the tungsten electrode bar is arranged between the argon arc welding gun body and the clamping mechanism; and the tungsten electrode welding head is arranged in the clamping mechanism and extends to the outer part of the secondary ceramic nozzle. According to the utility model, the tungsten electrode rod, the clamping mechanism, the tungsten electrode welding head and other parts are arranged, and the clamping mechanism is matched with the tungsten electrode welding head, so that the tungsten electrode welding head can be communicated with the tungsten electrode rod; and a tungsten electrode welding head can be directly contacted with the inner wall of the bearing bush during welding operation.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing bushing repairing devices, in particular to a bearing bushing finishing device. Background Art

[0002] The bushing is a matching part used outside the mechanical parts to achieve the functions of sealing and wear protection. It refers to a ring sleeve that acts as a gasket. In the field of valve applications, the bushing is inside the valve cover and is generally made of corrosion-resistant materials such as polytetrafluoroethylene or graphite for sealing.

[0003] Bearing bushings are the most common type of bushings. During actual use, this type of bushings may be subjected to friction and impact, which may cause small cracks to appear on the bushings, resulting in fatigue wear, and thus causing the bearing bushings to fail. When cracks appear on the bearing bushings, they are generally repaired by patch welding. If cracks appear on the outer surface of the bearing bushing, they can be directly repaired by welding. However, when cracks appear inside the bearing bushing, due to the small internal space of the bearing bushing, it is inconvenient for welders to perform welding operations, and welding is difficult. Therefore, a bearing bushing dressing device is proposed to solve the above-mentioned problems. Utility Model Content

[0004] Based on the above description, the utility model provides a bearing bushing dressing device to solve the problem of difficulty in welding cracks on the inner wall of the bearing bushing.

[0005] The utility model solves the above-mentioned technical problem with the following technical solution: a bearing bushing dressing device, comprising: an argon arc welding gun body; and a main porcelain nozzle, wherein the main porcelain nozzle is arranged at one end of the argon arc welding gun body, a connecting piece comprises a secondary porcelain nozzle, a locking mechanism and a capping cover, the secondary porcelain nozzle is arranged outside the main porcelain nozzle and comprises a porcelain nozzle branch pipe, the locking mechanism is arranged inside the secondary porcelain nozzle, a tungsten pole rod is arranged between the argon arc welding gun body and the locking mechanism, a tungsten pole welding head is arranged inside the locking mechanism and extends to the outside of the secondary porcelain nozzle.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the secondary porcelain nozzle comprises a porcelain nozzle sleeve, a porcelain nozzle branch pipe is arranged below the porcelain nozzle sleeve, and the porcelain nozzle branch pipe is communicated with the porcelain nozzle sleeve.

[0008] Furthermore, the porcelain nozzle sleeve is sleeved on the outside of the main porcelain nozzle, and the porcelain nozzle sleeve is arranged between the main porcelain nozzle and the clamping mechanism.

[0009] Furthermore, the tungsten electrode rod comprises a rod body, and the diameter of the rod body at one end close to the argon arc welding gun body is smaller than the diameter of the rod body at one end away from the argon arc welding gun body.

[0010] Furthermore, a threaded rod is provided at one end of the rod body away from the argon arc welding gun body, and a groove is provided at one end of the threaded rod.

[0011] Furthermore, the locking mechanism includes a hollow metal sleeve, which is threadedly connected to the threaded rod, a locking hole is provided at the top of the hollow metal sleeve, and the inner diameter of the hollow metal sleeve close to the locking hole is smaller than the inner diameter of the hollow metal sleeve away from the locking hole.

[0012] Furthermore, a first spring and a second spring are arranged inside the hollow metal sleeve, metal balls are arranged at both ends of the first spring, a metal ball is arranged on the side of the second spring close to the first spring, the diameter of the metal ball is larger than the inner diameter of the hollow metal sleeve close to the card hole, and a capping cover is arranged at one end of the hollow metal sleeve.

[0013] Furthermore, the tungsten electrode welding head includes a first welding head, a second welding head and a third welding head, surfaces of the first welding head, the second welding head and the third welding head are provided with slots, and the metal balls extend to the inside of the slots and the inside of the grooves respectively.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0015] 1. The utility model provides a tungsten electrode rod, a positioning mechanism, a tungsten electrode welding head and other components. The positioning mechanism cooperates with the tungsten electrode welding head, so that the tungsten electrode welding head can be connected with the tungsten electrode rod. The tungsten electrode welding head is provided with an inclined angle, so that the tungsten electrode welding head can directly contact the inner wall of the bearing bushing during welding operation.

[0016] 2. By setting the positioning mechanism, the effect of connecting the tungsten electrode rod and the tungsten electrode welding head is achieved, and the tungsten electrode welding head is easy to disassemble and replace. By setting multiple tungsten electrode welding heads, the bushing dressing device can be adjusted according to actual needs to achieve the effect of meeting different actual welding needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural schematic diagram of a bearing bushing dressing device provided in an embodiment of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the explosion structure;

[0019] Figure 3 This is a structural cross-sectional view of a connecting member in an embodiment of the utility model;

[0020] Figure 4This is a schematic diagram of the structure of a tungsten electrode welding head in an embodiment of the utility model;

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. TIG welding gun body; 2. Main porcelain nozzle; 3. Second porcelain nozzle; 31. Porcelain nozzle sleeve; 32. Porcelain nozzle branch pipe; 4. Tungsten pole rod; 41. Rod body; 42. Threaded rod; 5. Clamping mechanism; 51. Hollow metal sleeve; 52. First spring; 53. Metal ball; 54. Second spring; 55. Clamping hole; 6. Capping cover; 7. Tungsten pole welding head; 71. First welding head; 72. Second welding head; 73. Third welding head; 74. Clamping slot. DETAILED DESCRIPTION

[0023] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0025] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0026] See also Figure 1 and Figure 2 , a bearing bushing dressing device, comprising:

[0027] TIG welding gun body 1; and

[0028] A main porcelain nozzle 2, which is arranged at one end of the argon arc welding gun body 1;

[0029] Based on the above, the main porcelain nozzle 2 and the argon arc welding gun body 1 are both existing technologies. When the argon arc welding gun is in use, the tungsten electrode needs to be inserted into the welding gun, and the setting of the porcelain nozzle plays a role in directional transportation of argon gas, so that argon gas can act as a protective gas during the welding process. All the functions described here are functions that have been realized by existing argon arc welding, so the specific structure and principle of the argon arc welding gun body 1 and the main porcelain nozzle 2 are not repeated here.

[0030] like Figure 2 and Figure 3 As shown, the connecting piece includes a secondary porcelain nozzle 3, a positioning mechanism 5 and a capping cover 6, wherein:

[0031] A secondary porcelain nozzle 3, which is arranged outside the main porcelain nozzle 2 and includes a porcelain nozzle branch pipe 32. The secondary porcelain nozzle 3 includes a porcelain nozzle sleeve 31. A porcelain nozzle branch pipe 32 is arranged below the porcelain nozzle sleeve 31. The porcelain nozzle branch pipe 32 is communicated with the porcelain nozzle sleeve 31. The porcelain nozzle sleeve 31 is sleeved outside the main porcelain nozzle 2. The porcelain nozzle sleeve 31 is arranged between the main porcelain nozzle 2 and the clamping mechanism 5.

[0032] Based on the above, the secondary ceramic nozzle 3 plays the role of transmitting argon. After the argon is output from the argon arc welding gun body 1, the argon is input into the interior of the secondary ceramic nozzle 3 through the main ceramic nozzle 2, and is ejected from the ceramic nozzle branch pipe 32. The ejected argon gas flow is directly aimed at the tungsten electrode welding head 7, thereby achieving the effect of protecting the welding part.

[0033] like Figure 3 As shown, a locking mechanism 5 is arranged inside the secondary porcelain nozzle 3, and the locking mechanism 5 includes a hollow metal sleeve 51, the hollow metal sleeve 51 and the threaded rod 42 are threadedly connected to each other, and a locking hole 55 is arranged at the top of the hollow metal sleeve 51, and the inner diameter of the side of the hollow metal sleeve 51 close to the locking hole 55 is smaller than the inner diameter of the side away from the locking hole 55;

[0034] A first spring 52 and a second spring 54 are arranged inside the hollow metal sleeve 51. Metal balls 53 are arranged at both ends of the first spring 52. A metal ball 53 is arranged on the side of the second spring 54 close to the first spring 52. The diameter of the metal ball 53 is larger than the inner diameter of the side of the hollow metal sleeve 51 close to the clamping hole 55. A capping cover 6 is arranged at one end of the hollow metal sleeve 51.

[0035] Based on the above, the setting of the hollow metal sleeve 51 makes it impossible for the metal balls 53 located on both sides of the clamping hole 55 to completely enter the interior of the clamping hole 55, and under the action of the elastic force of the first spring 52 and the second spring 54, the metal balls 53 are in close contact with the tungsten pole rod 4 and the tungsten pole welding head 7 respectively, and the setting of the clamping hole 55 enables the tungsten pole welding head 7 to be clamped into the interior of the hollow metal sleeve 51, so as to achieve the effect of interconnection with the tungsten pole rod 4 and the tungsten pole welding head 7.

[0036] like Figure 3 and Figure 4 As shown, the tungsten pole rod 4 is arranged between the argon arc welding gun body 1 and the clamping mechanism 5, and a threaded rod 42 is arranged at one end of the pole body 41 away from the argon arc welding gun body 1, and a groove is arranged at one end of the threaded rod 42;

[0037] A tungsten electrode welding head 7 is arranged inside the clamping mechanism 5 and extends to the outside of the secondary porcelain nozzle 3. The tungsten electrode welding head 7 includes a first welding head 71, a second welding head 72 and a third welding head 73. The surfaces of the first welding head 71, the second welding head 72 and the third welding head 73 are provided with a clamping groove 74. The metal ball 53 extends to the inside of the clamping groove 74 and the inside of the groove respectively.

[0038] Based on the above, the setting of the threaded rod 42 realizes the effect of interconnecting the tungsten pole rod 4 and the hollow metal sleeve 51, and the groove makes the contact area between the tungsten pole rod 4 and the metal ball 53 larger, which has an excellent conductive effect during the welding process. The slot 74 has the same effect as the above-mentioned groove, and when the metal ball 53 is inserted into the slot 74, the tungsten pole welding head 7 can be fixed, making the tungsten pole welding head 7 easy to replace and install.

[0039] In actual use of this embodiment, the tungsten pole rod 4 is connected to the hollow metal sleeve 51, and then the other end of the tungsten pole rod 4 is inserted into the interior of the argon arc welding gun body 1, and the main porcelain nozzle 2 and the secondary porcelain nozzle 3 are connected to each other;

[0040] When welding is required, the tungsten electrode welding head 7 can be inserted into the clamping hole 55. During this process, the tungsten electrode welding head 7 squeezes the metal balls 53 on both sides, so that the metal balls 53 are displaced after being subjected to force, and the first spring 52 and the second spring 54 are both compressed to generate a reverse elastic force. When the clamping slot 74 moves to the metal ball 53, the metal ball 53 is clamped into the inside of the clamping slot 74 under the action of the elastic force. At this time, the installation of the tungsten electrode welding head 7 is realized. The reverse operation, that is, the tungsten electrode welding head 7 can be removed by pulling it out.

[0041] The dressing device, by arranging a tungsten electrode welding head 7, enables the argon arc welding gun body 1 to directly extend into the interior of the bearing bushing so that the tungsten electrode welding head 7 directly contacts the inner wall of the bearing bushing, and through the arrangement of the connecting piece, not only can different tungsten electrode welding heads 7 be replaced but also argon gas can flow to protect the welding point to ensure a good welding effect. Compared with traditional argon arc welding, the device is more suitable for repairing bushings with smaller volumes, and the welding operation can be completed in a very small space inside the bushing, which greatly reduces the difficulty of the welder's work during welding.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bearing bushing dressing device, It is characterized in that include: TIG welding gun body (1); as well as A main porcelain nozzle (2) arranged at one end of the argon arc welding gun body (1); The connecting piece comprises a secondary porcelain nozzle (3), a locking mechanism (5) and a capping cover (6), wherein: A secondary porcelain nozzle (3), which is arranged outside the main porcelain nozzle (2) and includes a porcelain nozzle branch pipe (32); A locking mechanism (5) is arranged inside the secondary porcelain nozzle (3); A tungsten pole (4) disposed between the argon arc welding gun body (1) and the locking mechanism (5); A tungsten electrode welding head (7) is arranged inside the positioning mechanism (5) and extends to the outside of the secondary porcelain nozzle (3).

2. The dressing device according to claim 1, It is characterized in that The secondary porcelain nozzle (3) comprises a porcelain nozzle sleeve (31), a porcelain nozzle branch pipe (32) is arranged below the porcelain nozzle sleeve (31), and the porcelain nozzle branch pipe (32) is communicated with the porcelain nozzle sleeve (31).

3. The dressing device according to claim 2, It is characterized in that The porcelain nozzle sleeve (31) is sleeved on the outside of the main porcelain nozzle (2), and the porcelain nozzle sleeve (31) is arranged between the main porcelain nozzle (2) and the locking mechanism (5).

4. The trimming device according to claim 1, It is characterized in that The tungsten electrode rod (4) comprises a rod body (41), wherein the diameter of the end of the rod body (41) close to the argon arc welding gun body (1) is smaller than the diameter of the end of the rod body (41) far from the argon arc welding gun body (1).

5. The trimming device according to claim 4, It is characterized in that A threaded rod (42) is provided at one end of the rod body (41) away from the argon arc welding gun body (1), and a groove is provided at one end of the threaded rod (42).

6. The trimming device according to claim 5, It is characterized in that The locking mechanism (5) comprises a hollow metal sleeve (51), the hollow metal sleeve (51) and the threaded rod (42) are threadedly connected to each other, a locking hole (55) is provided at the top end of the hollow metal sleeve (51), and the inner diameter of the side of the hollow metal sleeve (51) close to the locking hole (55) is smaller than the inner diameter of the side away from the locking hole (55).

7. The trimming device according to claim 6, It is characterized in that A first spring (52) and a second spring (54) are arranged inside the hollow metal sleeve (51); metal balls (53) are arranged at both ends of the first spring (52); a metal ball (53) is arranged on a side of the second spring (54) close to the first spring (52); the diameter of the metal ball (53) is larger than the inner diameter of a side of the hollow metal sleeve (51) close to the clamping hole (55); and a capping cover (6) is arranged at one end of the hollow metal sleeve (51).

8. The dressing device according to claim 7, It is characterized in that The tungsten electrode welding head (7) comprises a first welding head (71), a second welding head (72) and a third welding head (73); surfaces of the first welding head (71), the second welding head (72) and the third welding head (73) are provided with a slot (74); and the metal ball (53) extends into the interior of the slot (74) and the interior of the groove, respectively.

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