Grounding structure for welding high-speed train framework

Abstract

The utility model discloses a grounding structure for high-speed train framework welding, which relates to the field of rail transit train body welding and comprises an insulating base and second bolts, the two sides of the top end of the insulating base are in threaded connection with the second bolts, and a threaded steel sleeve is arranged at the upper end of one side of the insulating base. And the other side of the top end of the insulating base is fixedly connected with a shaft sleeve through a thin nut, the interior of the shaft sleeve is slidably connected with a connecting shaft, and the top end of the connecting shaft is fixedly connected with an electrode. According to the grounding structure for high-speed train framework welding, when a workpiece makes contact with the electrode, the spring bears certain pressure, meanwhile, the workpiece is pushed upwards by a certain distance through the elasticity of the spring, the workpiece makes contact with the electrode all the time and has certain pressure, current can well pass through, and therefore welding is completed; and the elastic force of the spring can quickly assist in quick resetting of the connecting shaft and the electrode, and meanwhile, the elastic force of the spring can quickly adapt to machining of workpieces with different weights.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle body welding of rail transit, in particular to a grounding structure for welding a high-speed train frame. Background Art

[0002] High-speed trains, also known as high-speed trains and bullet trains, refer to trains that can run continuously at high speeds. The maximum speed is generally above 200km / h. High-speed trains are modern high-speed means of transportation. High-speed trains travel at high speeds, so the skeleton of high-speed trains also needs special attention during processing. The use of grounding structures can better support the workpieces of the welding part.

[0003] In the prior art, a Chinese patent with authorization announcement number CN212885974U discloses a fixing device for welding a high-speed train skeleton, comprising a first mechanism and a second mechanism, wherein the first mechanism and the second mechanism are respectively located on the inner and outer sides of the welding workpiece; the first mechanism comprises a first base, a bolt and a limit block, wherein the bolt is located on the first base, and the bolt is connected to the first base by a thread, and a limit block is arranged at the top of the bolt; the second mechanism comprises a second base, a four-bar linkage and a top block, wherein the four-bar linkage is located above the second base, and a top block is arranged at the protruding end of the four-bar linkage. The fixing device for welding a high-speed train skeleton has a simple structure and a reasonable design, and the bolt of the first mechanism and the four-bar linkage of the second mechanism are used to cooperate to position the workpiece, thereby ensuring that the subsequent process works with an accuracy of less than 1 mm, and realizing precise welding.

[0004] The above mechanism positions the workpiece by cooperating with the bolts of the first mechanism and the four-bar mechanism of the second mechanism. However, in actual use, the support for the workpiece is insufficient during welding, and high-speed trains require the same weld pattern every time during welding, resulting in insufficient applicability of the whole during use. Utility Model Content

[0005] The utility model aims to provide a grounding structure for high-speed train frame welding to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a grounding structure for high-speed train frame welding, comprising an insulating base and a second bolt, the second bolts are threadedly connected to both sides of the top of the insulating base, a threaded steel sleeve is provided at the upper end of one side of the insulating base, and a shaft sleeve is fixedly connected to the other side of the top of the insulating base through a thin nut, a connecting shaft is slidably connected to the inside of the shaft sleeve, and an electrode is fixedly connected to the top of the connecting shaft, anti-interference mechanisms are provided on both sides of the outside of the electrode, and a spring is wound around the outside of the connecting shaft inside the shaft sleeve;

[0007] The anti-interference mechanism includes a grounding mechanism and a locking mechanism, and the grounding mechanism is used to reduce electromagnetic interference and ensure that the current is discharged underground, and the locking mechanism is used to fix the grounding mechanism to prevent the grounding mechanism from loosening.

[0008] Furthermore, the grounding mechanism includes a copper braided belt, and the copper braided belt is fixedly connected to the middle position of both sides of the outside of the electrode through a locking mechanism, and the copper braided belt is symmetrical about the central axis of the electrode in the vertical direction.

[0009] Furthermore, the locking mechanism includes a first bolt, and the first bolt is threadedly connected to both sides of the outside of the electrode, gaskets are provided on both sides of the outside of the electrode on one side of the first bolt, and one side of the first bolt is in contact with one side of the gasket, and the other side of the gasket is in contact with one side of the copper braided belt.

[0010] Furthermore, one side of the first bolt passes through the gasket and the copper braid and extends to the interior of the electrode, and the first bolt is symmetrical about the central axis of the electrode in the vertical direction.

[0011] Furthermore, an anti-rotation mechanism is arranged inside the sleeve at the bottom end of the connecting shaft, and the anti-rotation mechanism is used to prevent axial movement of the sleeve and the connecting shaft to ensure stability during processing. The anti-rotation mechanism includes a second retaining ring, and the second retaining ring is arranged at the bottom end of the inner part of the sleeve outside the connecting shaft.

[0012] Furthermore, an O-ring is sleeved below the second retaining ring outside the connecting shaft, and an elastic cylindrical pin is sleeved at the lower end outside the connecting shaft, and a first retaining ring is arranged inside the elastic cylindrical pin.

[0013] Furthermore, the outer side of the first retaining ring fits with the inner side of the elastic cylindrical pin, and the first retaining ring is sleeved on the outer side of the connecting shaft.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. When the workpiece contacts the electrode, the spring is subjected to a certain pressure, and at the same time, uses its own elastic force to push the workpiece upward a certain distance, so that the workpiece and the electrode are always in contact and have a certain pressure, so that the current can pass well, thereby completing the welding, and the elastic force of the spring can quickly assist the rapid reset of the connecting shaft and the electrode position. At the same time, the elastic force of the spring can quickly adapt to the processing of workpieces of different weights, so that when the workpiece is placed on the electrode surface, the elastic force of the spring can be used to lift the workpiece, so that the workpiece is always in contact with the processing mechanism and processed;

[0016] Furthermore, the main purpose of the copper braid is to provide electromagnetic shielding and grounding functions, protect the equipment from electromagnetic interference, and ensure the safe discharge of current underground. The copper braid can better prevent interference during welding, and together with other insulating components, make the overall use of the device safer;

[0017] Furthermore, through the threaded connection between the first bolt and the electrode, the copper braid can be quickly locked and fixed on both sides of the electrode, so as to better play the role of anti-interference. At the same time, the gasket can prevent the first bolt from loosening due to the vibration of the device after installation, thereby increasing the overall stability during use;

[0018] 2. The second retaining ring is used to fix the position of the sleeve, and the first retaining ring and the elastic cylindrical pin are used to fix the position of the connecting shaft. When welding the workpiece, the removal of the workpiece will cause axial movement. The second retaining ring and the first retaining ring can quickly achieve axial control;

[0019] Furthermore, the second retaining ring and the first retaining ring also have the function of preventing machine parts from falling off, so that the device as a whole can be more stable during use, increasing the applicability during use. At the same time, since the second retaining ring and the first retaining ring are generally made of alloy, they have high wear resistance and are not easy to wear after long-term use, thereby extending the life of the device as a whole during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0022] Figure 3 This is a side view of the structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the front view structure of the utility model;

[0024] Figure 5 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0025] Figure 6 It is a partial enlarged structural schematic diagram of the grounding mechanism of the utility model.

[0026] In the figure: 1. electrode; 2. first bolt; 3. gasket; 4. copper braid; 5. thin nut; 6. threaded steel sleeve; 7. insulating base; 8. second bolt; 9. first retaining ring; 10. elastic cylindrical pin; 11. O-ring; 12. second retaining ring; 13. spring; 14. bushing; 15. connecting shaft. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 6 The utility model provides a technical solution: a grounding structure for high-speed train frame welding.

[0029] Embodiment 1:

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 The technical solution shown in the utility model provides a technical solution: the grounding structure for welding the high-speed train skeleton discloses an anti-interference mechanism, including an insulating base 7 and a second bolt 8, both sides of the top of the insulating base 7 are threadedly connected with the second bolt 8, the upper end of one side of the insulating base 7 is provided with a threaded steel sleeve 6, and the other side of the top of the insulating base 7 is fixedly connected with a sleeve 14 through a thin nut 5, the inside of the sleeve 14 is slidably connected with a connecting shaft 15, and the top of the connecting shaft 15 is fixedly connected with an electrode 1, both sides of the outside of the electrode 1 are provided with anti-interference mechanisms, and the outside of the connecting shaft 15 inside the sleeve 14 is wound with a spring 13;

[0031] The anti-interference mechanism includes a grounding mechanism and a locking mechanism, and the grounding mechanism is used to reduce electromagnetic interference and ensure that the current is discharged underground, and the locking mechanism is used to fix the grounding mechanism to prevent the grounding mechanism from loosening.

[0032] The grounding mechanism includes a copper braided belt 4 , and the copper braided belt 4 is fixedly connected to the middle positions of both sides of the outside of the electrode 1 through a locking mechanism, and the copper braided belt 4 is symmetrical about the central axis of the electrode 1 in the vertical direction.

[0033] In this example, the position of the insulating base 7 is fixed by rotating the second bolt 8. When the workpiece contacts the electrode 1, the spring 13 is subjected to a certain pressure, and at the same time, its own elastic force is used to push the workpiece upward a certain distance, so that the workpiece is always in contact with the electrode and has a certain pressure, so that the current can pass well. After the welding is completed, the workpiece leaves the surface of the electrode 1, and the electrode is automatically bounced up by the spring 13, thereby completing the processing of the workpiece. The main purpose of the copper braided belt 4 is to provide electromagnetic shielding and grounding functions, protect the equipment from electromagnetic interference, and ensure the safe discharge of current underground. The use of the copper braided belt 4 can better play an anti-interference role during welding, and together with other insulating components, the overall use of the device is safer.

[0034] Embodiment 2:

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 The technical solution shown in the present invention provides a technical solution: the grounding structure for high-speed train frame welding discloses a locking mechanism, which includes a first bolt 2, and the first bolt 2 is threadedly connected to both sides of the outside of the electrode 1, and gaskets 3 are provided on both sides of the outside of the electrode 1 on one side of the first bolt 2, and one side of the first bolt 2 is in contact with one side of the gasket 3, and the other side of the gasket 3 is in contact with one side of the copper braided belt 4.

[0036] One side of the first bolt 2 passes through the gasket 3 and the copper braid 4 and extends to the inside of the electrode 1 , and the first bolt 2 is symmetrical about the central axis of the electrode 1 in the vertical direction.

[0037] In this example, the first bolt 2 is rotated and passed through the gasket 3, the copper braided belt 4 and the electrode 1, so that the copper braided belt 4 is locked and fixed on both sides of the electrode 1, so as to better play the role of anti-interference. At the same time, the gasket 3 can prevent the first bolt 2 from loosening due to the vibration of the device after installation, so that the overall installation of the device can be more stable.

[0038] Embodiment three:

[0039] like Figure 1-Figure 5 The technical solution shown in the present invention provides a technical solution: the grounding structure for welding the high-speed train frame discloses an anti-rotation mechanism, and the anti-rotation mechanism is arranged inside the bushing 14 at the bottom end of the connecting shaft 15, and the anti-rotation mechanism is used to prevent the bushing 14 and the connecting shaft 15 from axial movement to ensure stability during processing, and the anti-rotation mechanism includes a second retaining ring 12, and the second retaining ring 12 is arranged at the bottom end of the bushing 14 outside the connecting shaft 15.

[0040] An O-ring 11 is sleeved below the second retaining ring 12 outside the connecting shaft 15 , and an elastic cylindrical pin 10 is sleeved at the lower end outside the connecting shaft 15 , and a first retaining ring 9 is arranged inside the elastic cylindrical pin 10 .

[0041] The outer side of the first retaining ring 9 fits with the inner side of the elastic cylindrical pin 10 , and the first retaining ring 9 is sleeved on the outer side of the connecting shaft 15 .

[0042] In this example, the second retaining ring 12 fixes the position of the sleeve 14, and the first retaining ring 9 and the elastic cylindrical pin 10 fix the position of the connecting shaft 15 to avoid angular deviation between the sleeve 14 and the connecting shaft 15 during long-term use, thereby effectively preventing excessive axial movement. At the same time, the second retaining ring 12 and the first retaining ring 9 also prevent machine parts from falling off, so that the overall device can be more stable during use, increasing its applicability during use.

Claims

1. A grounding structure for high-speed train frame welding, comprising an insulating base (7) and a second bolt (8), wherein both sides of the top of the insulating base (7) are threadedly connected to the second bolt (8), a threaded steel sleeve (6) is provided at the upper end of one side of the insulating base (7), and a shaft sleeve (14) is fixedly connected to the other side of the top of the insulating base (7) through a thin nut (5), a connecting shaft (15) is slidably connected inside the shaft sleeve (14), and an electrode (1) is fixedly connected to the top of the connecting shaft (15), and anti-interference mechanisms are provided on both sides of the outside of the electrode (1), and a spring (13) is wound around the outside of the connecting shaft (15) inside the shaft sleeve (14); Features: The anti-interference mechanism includes a grounding mechanism and a locking mechanism, and the grounding mechanism is used to reduce electromagnetic interference and ensure that the current is discharged underground, and the locking mechanism is used to fix the grounding mechanism to prevent the grounding mechanism from loosening.

2. A grounding structure for high-speed train frame welding according to claim 1, characterized in that: The grounding mechanism comprises a copper braided belt (4), and the copper braided belt (4) is fixedly connected to the middle positions of the two sides of the outside of the electrode (1) through a locking mechanism, and the copper braided belt (4) is symmetrical about the central axis of the electrode (1) in the vertical direction.

3. A grounding structure for high-speed train frame welding according to claim 2, characterized in that: The locking mechanism comprises a first bolt (2), and the first bolt (2) is threadedly connected to two sides of the outside of the electrode (1), and gaskets (3) are provided on both sides of the outside of the electrode (1) on one side of the first bolt (2), and one side of the first bolt (2) is in contact with one side of the gasket (3), and the other side of the gasket (3) is in contact with one side of the copper braided belt (4).

4. A grounding structure for high-speed train frame welding according to claim 3, characterized in that: One side of the first bolt (2) passes through the gasket (3) and the copper braided belt (4) and extends to the interior of the electrode (1), and the first bolt (2) is symmetrical about the central axis of the electrode (1) in the vertical direction.

5. A grounding structure for high-speed train frame welding according to claim 1, characterized in that: An anti-rotation mechanism is arranged inside the shaft sleeve (14) at the bottom end of the connecting shaft (15), and the anti-rotation mechanism is used to prevent the shaft sleeve (14) and the connecting shaft (15) from axial movement, thereby ensuring stability during processing. The anti-rotation mechanism includes a second retaining ring (12), and the second retaining ring (12) is arranged at the bottom end of the shaft sleeve (14) outside the connecting shaft (15).

6. A grounding structure for high-speed train frame welding according to claim 5, characterized in that: An O-ring (11) is sleeved below the second retaining ring (12) outside the connecting shaft (15), and an elastic cylindrical pin (10) is sleeved at the lower end outside the connecting shaft (15), and a first retaining ring (9) is arranged inside the elastic cylindrical pin (10).

7. A grounding structure for high-speed train frame welding according to claim 6, characterized in that: The outer side of the first retaining ring (9) fits the inner side of the elastic cylindrical pin (10), and the first retaining ring (9) is sleeved on the outer side of the connecting shaft (15).

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