Underwater welding handle capable of controlling current switch of electric welding machine

Abstract

The utility model relates to the technical field of underwater welding equipment, and discloses an underwater welding handle capable of controlling a current switch of an electric welding machine, which comprises a welding handle shell and a welding handle head sleeve in threaded connection with the end part of the welding handle shell, the welding handle head sleeve is provided with a penetrating hole, a welding rod is inserted into the penetrating hole, and the welding rod is connected with the welding handle shell. A handle core head and a conductive handle core located on the lower portion of the handle core head are arranged in the welding handle shell, a propelling assembly is installed on the lower portion of the conductive handle core, a welding handle wire is arranged on the lower portion of the propelling assembly, and the welding handle wire is electrically connected with the propelling assembly. The problems that in traditional underwater welding, welding personnel need to inform overwater supporting personnel to control current on-off of the electric welding machine through a communication device, operation is complex, and a large amount of manpower is wasted are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater welding equipment, in particular to an underwater welding handle which can control a current switch of an electric welding machine. Background Art

[0002] Underwater welding is an indispensable and important process in the installation and maintenance of underwater engineering structures. They are often used in the construction of marine engineering and large underwater facilities such as marine salvage, marine energy, and marine mining. Due to the presence of water, the welding process of underwater welding is more complicated, and various problems that have not been encountered in land welding will occur. Chinese patent CN93219844.9 discloses "Energy-saving Electric Welding Handle", publication number CN2169511Y, and the utility model discloses an energy-saving electric welding handle, which belongs to electric welding tools. It is a copper conductor with external threads and a conical head at the front end of the hollow handle body, a tin-plated layer on the conical surface of the conical head, a clamping sleeve with an inner sleeve embedded outside the copper conductor, the inner sleeve has threads and meshes with the external threads of the copper conductor, the top of the inner hole of the inner sleeve is a conical surface, and it coincides with the conical surface of the conical head of the copper conductor, and an inclined penetration hole is opened on the front side wall of the clamping sleeve, and the center line of the hole is parallel to the conical surface of the conical head of the copper conductor.

[0003] Underwater welding requires professionals to hold the welding torch and go into the water to operate, but the knife switch that controls the current of the welding machine is located above water. The welder needs to notify the support personnel on the water through the communication device to control the current of the welding machine. The operation is complicated and wastes a lot of manpower. Utility Model Content

[0004] In order to solve the above-mentioned problems of the prior art, the utility model provides an underwater welding torch which can control the current switch of an electric welding machine, thereby solving the problem that traditional underwater welding requires the welder to notify the support personnel on the water to control the current on and off of the electric welding machine through a communication device, which is complicated to operate and wastes a lot of manpower.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an underwater welding torch capable of controlling the current switch of an electric welding machine, comprising a welding torch shell, a welding torch head cover threadedly connected to the end of the welding torch shell, a mounting hole being provided on the welding torch head cover, a welding rod being inserted into the mounting hole, a handle core head and a conductive handle core located below the handle core head being arranged inside the welding torch shell, a propulsion assembly being installed at the lower part of the conductive handle core, the propulsion assembly being capable of pushing the conductive handle core to move upward, a welding torch wire being arranged at the lower part of the propulsion assembly, and the welding torch wire being electrically connected to the propulsion assembly.

[0006] With the above structural design, the propulsion assembly can propel the conductive handle core so that the conductive handle core contacts and connects with the handle core head, thereby energizing the welding handle and achieving the purpose of controlling the on and off of the power supply. Underwater workers can control the on and off of the current of the welding machine as needed, without having to notify the water support personnel to control the on and off of the current of the welding machine through a communication device. Underwater welding work is smoother, saving manpower and improving work efficiency.

[0007] Preferably, the propulsion assembly includes a compression spring sleeved on the conductive handle core, a propulsion cylinder fixedly connected to the lower part of the conductive handle core, the lower end of the propulsion cylinder is a spiral inclined surface, a rotating shaft is provided at the lower part of the propulsion cylinder, a rotating plate is fixedly connected to the outer wall of the rotating shaft, and the upper end of the rotating plate abuts against the lower end inclined surface of the propulsion cylinder.

[0008] With the above structural design, through the cooperation between the propulsion tube and the rotating plate on the rotating shaft, the rotating shaft can be rotated to make the rotating plate push the propulsion tube to move forward, thereby pushing the conductive handle core forward to contact the handle core head and connect the power supply.

[0009] Preferably, a rotating drum is fixedly connected to the lower end of the rotating shaft, and the rotating drum is rotatably connected to the welding handle shell.

[0010] With the above structural design, the movement of the rotating shaft can be controlled by rotating the rotating drum, which is simple and convenient.

[0011] Preferably, an indicator bar is fixedly connected to the upper portion of the rotating drum, and two limit bars are fixedly connected to the outer surface of the welding handle shell, and the limit bars are located at the left and right ends of the indicator bar.

[0012] With the above structural design, when the indicator bar rotates to the left limit bar, it means that the power is cut off. When the indicator bar rotates to the right limit bar, it means that the power is connected. The operator can judge whether the welding gun has electricity by observing the position of the indicator bar, which is convenient for the operator to operate safely.

[0013] Preferably, a sliding block is fixedly connected to the side of the propulsion cylinder, and a sliding groove is provided on the inner wall of the welding handle shell at a position corresponding to the sliding block, and the sliding groove is arranged along the length direction of the welding handle shell.

[0014] The above structural design is adopted to limit the propulsion cylinder to only move up and down, preventing the propulsion cylinder from rotating and causing position deviation, thereby affecting the operation of the device.

[0015] Preferably, the outer surface of the drum is provided with a striped pattern for increasing friction.

[0016] With the above structural design, the striped pattern increases the friction force, which is beneficial for the operator to rotate the drum better.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The device is provided with a propulsion assembly that can propel the conductive handle core so that the conductive handle core contacts and connects with the handle core head, thereby energizing the welding handle to achieve the purpose of controlling the on and off of the power supply. Underwater operators can control the on and off of the electric welding machine current as needed, without notifying the water support personnel to control the on and off of the electric welding machine current through a communication device. The underwater welding work is smoother, saving manpower and improving work efficiency.

[0019] 2. An indicator bar is provided. When the indicator bar is rotated to the left limit bar, it means that the power is cut off. When the indicator bar is rotated to the right limit bar, it means that the power is connected. The operator can judge whether the welding torch has electricity by observing the position of the indicator bar, which is convenient for the operator to operate safely. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0021] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;

[0022] Figure 3 The internal structure of the welding handle shell of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 4 The internal structure of the welding handle shell of the utility model is shown in FIG. Figure 2 ;

[0024] Figure 5 It is a structural schematic diagram of the propulsion cylinder of the utility model. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-5The utility model provides a technical solution: an underwater welding torch capable of controlling the current switch of an electric welding machine, comprising a welding torch shell 1, a welding torch head cover 2 threadedly connected to the end of the welding torch shell 1, a through hole 6 provided on the welding torch head cover 2, a welding rod 3 inserted into the through hole 6, a handle head 7 and a conductive handle core 8 located below the handle head 7 are arranged inside the welding torch shell 1, the handle head 7 is fixed inside the welding torch shell 1, and the conductive handle core 8 can move up and down inside the welding torch shell 1. A propulsion assembly is installed at the lower part of the conductive handle core 8, a welding torch wire 4 is arranged at the lower part of the propulsion assembly, and the welding torch wire 4 is electrically connected to the propulsion assembly. The propulsion assembly, the handle head 7 and the conductive handle core 8 are all made of conductive metal, and the welding torch shell 1 is made of insulating rubber. The propulsion assembly can propel the conductive handle core 8 so that the conductive handle core 8 contacts and connects with the handle core head 7, thereby energizing the welding handle and achieving the purpose of controlling the on and off of the power supply. Underwater workers can control the on and off of the current of the welding machine as needed, without having to notify the support personnel on the water to control the on and off of the current of the welding machine through a communication device. Underwater welding work is smoother, saving manpower and improving work efficiency.

[0027] The propulsion assembly includes a compression spring 9 sleeved on the conductive handle core 8, a propulsion cylinder 10 fixedly connected to the lower part of the conductive handle core 8, the lower end of the propulsion cylinder 10 is a spiral slope, a rotating shaft 11 is arranged at the lower part of the propulsion cylinder 10, a rotating plate 12 is fixedly connected to the outer wall of the rotating shaft 11, and the upper end of the rotating plate 12 abuts against the lower end slope of the propulsion cylinder 10. Through the cooperation between the propulsion cylinder 10 and the rotating plate 12 on the rotating shaft 11, the rotating shaft 11 can make the rotating plate 12 push the propulsion cylinder 10 forward, thereby pushing the conductive handle core 8 forward to contact the handle core head 7 and connect the power supply.

[0028] The lower end of the rotating shaft 11 is fixedly connected with a rotating drum 5, and the rotating drum 5 is rotatably connected to the welding gun housing 1. The outer surface of the rotating drum 5 is provided with a strip pattern for increasing friction. The strip pattern is made of insulating rubber material, and the provision of the strip pattern increases friction, which is conducive to the operator to better rotate the rotating drum 5.

[0029] An indicator bar 14 is fixedly connected to the upper part of the rotating drum 5, and two limit bars 13 are fixedly connected to the outer surface of the welding gun housing 1, and the limit bars 13 are located at the left and right ends of the indicator bar 14. When the indicator bar 14 rotates to the left limit bar 13, it means that the power is cut off, and when the indicator bar 14 rotates to the right limit bar 13, it means that the power is connected. The operator can judge whether the welding gun has electricity by observing the position of the indicator bar 14, which is convenient for the operator to operate safely.

[0030] A slider 15 is fixedly connected to the side of the propulsion cylinder 10, and a slide groove 16 is provided on the inner wall of the electrode holder housing 1 at a position corresponding to the slider 15, and the slide groove 16 is provided along the length direction of the electrode holder housing 1. The slider 15 and the slide groove 16 restrict the propulsion cylinder 10 to move only up and down, preventing the propulsion cylinder 10 from rotating and causing position deviation, thereby affecting the operation of the device.

[0031] Working principle: before going into the water, the operator first rotates the rotating drum 5 to rotate the indicator bar 14 to the left limit bar 13, which means the power is cut off. When going into the water, the operator rotates the rotating drum 5 to rotate the indicator bar 14 to the right limit bar 13, which means the power is connected. The operator can judge whether the welding gun has electricity by observing the position of the indicator bar 14, which is convenient for the operator to operate safely. The setting of this device allows underwater operators to control the current of the welding machine as needed, without notifying the water support personnel to control the current of the welding machine through the communication device. Underwater welding work is smoother, saving manpower and improving work efficiency.

[0032] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. Although the present utility model is described in detail with reference to the above embodiments, it is still possible for the technical solutions recorded in the above embodiments to be modified, or some of the technical features therein to be replaced by equivalents, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An underwater welding torch capable of controlling a current switch of an electric welding machine, comprising a welding torch housing (1), and a welding torch head cover (2) threadedly connected to an end of the welding torch housing (1), characterized in that: The welding handle head cover (2) is provided with a mounting hole (6), a welding rod (3) is inserted into the mounting hole (6), a welding handle core head (7) and a conductive handle core (8) located below the handle core head (7) are arranged inside the welding handle shell (1), a propulsion assembly is installed below the conductive handle core (8), the propulsion assembly can push the conductive handle core (8) to move upwards, a welding handle wire (4) is arranged below the propulsion assembly, and the welding handle wire (4) is electrically connected to the propulsion assembly.

2. The underwater welding torch capable of controlling the current switch of an electric welding machine according to claim 1, characterized in that: The propulsion assembly comprises a compression spring (9) sleeved on the conductive handle core (8), and a propulsion cylinder (10) fixedly connected to the lower part of the conductive handle core (8); the lower end of the propulsion cylinder (10) is a spiral inclined surface; a rotating shaft (11) is arranged at the lower part of the propulsion cylinder (10); a rotating plate (12) is fixedly connected to the outer wall of the rotating shaft (11); and the upper end of the rotating plate (12) abuts against the lower end inclined surface of the propulsion cylinder (10).

3. The underwater welding torch capable of controlling the current switch of an electric welding machine according to claim 2, characterized in that: A rotating drum (5) is fixedly connected to the lower end of the rotating shaft (11), and the rotating drum (5) is rotatably connected to the welding handle housing (1).

4. The underwater welding torch capable of controlling the current switch of an electric welding machine according to claim 3, characterized in that: An indicator strip (14) is fixedly connected to the upper portion of the rotating drum (5), and two limit strips (13) are fixedly connected to the outer surface of the welding handle housing (1), wherein the limit strips (13) are located at left and right ends of the indicator strip (14).

5. The underwater welding torch capable of controlling the current switch of an electric welding machine according to claim 2, characterized in that: A sliding block (15) is fixedly connected to the side of the propulsion tube (10), and a sliding groove (16) is provided on the inner wall of the welding handle shell (1) at a position corresponding to the sliding block (15), and the sliding groove (16) is arranged along the length direction of the welding handle shell (1).

6. The underwater welding torch capable of controlling the current switch of an electric welding machine according to claim 3, characterized in that: The outer surface of the rotating drum (5) is provided with a striped pattern for increasing friction.

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