Fixing mechanism for gas belt connector of cutting gun

Abstract

The utility model discloses a cutting gun gas belt interface fixing mechanism, which comprises a handle arranged at the end part of a cutting gun, two gas inlet joints are arranged on the handle, a gas belt is inserted on the gas inlet joints, and a fixing joint is arranged on the outer side of the connecting part of the gas belt and the gas inlet joints. According to the utility model, the fixed joint which can be rotatably opened and closed is arranged at the connecting part of the air belt and the air inlet joint, the fixed joint is hooped at the outer side of the connecting part, and after the fixed joint is fastened by using the retention pin, the positioning bulge on the inner wall of the fixed joint can abut against the surface of the air belt, so that the stable installation of the air cylinder is ensured, the generation of tightening marks is reduced, and the service life of the air cylinder is prolonged. Therefore, the overall shape of the air belt is guaranteed, surface damage of the air belt is avoided, loss of the air belt is reduced, the retention pin can be manually fastened, tools are not needed, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of air belt fixing parts, in particular to a fixing mechanism for a cutting torch air belt interface. Background Art

[0002] The function of a cutting torch is to mix oxygen and acetylene in proportion to form a preheating flame, and spray high-pressure pure oxygen onto the workpiece to be cut, so that the metal to be cut burns in the oxygen jet, and the oxygen jet blows away the molten slag (oxide) generated by combustion to form a cut. The cutting torch is the main tool for gas cutting workpieces. When using a cutting torch, the air belts of an oxygen tank and an acetylene tank need to be connected to the air inlet connectors on its handle first. At present, after inserting the air belt into the air inlet connector, generally a stainless steel clamp is used to surround the connection part of the air belt and the air inlet connector, and by tightening the fastening screw on the clamp, the clamp is tightly tightened on the outside of the air belt. Since the air belt is made of rubber, tightly tightening the air belt will cause a deep indentation on its surface. Over time, the surface of the air belt is extremely prone to damage at the indentation, and at this time, the indentation part needs to be cut off. This fixing method causes great loss to the air belt, and each time the clamp is tightened, a screwdriver is needed to tighten the fastening screw, and the operation is very inconvenient. Content of the Utility Model

[0003] The purpose of the utility model is to avoid the deficiencies of the prior art and provide a fixing mechanism for a cutting torch air belt interface, thereby effectively solving the deficiencies existing in the prior art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a fixing mechanism for a cutting torch air belt interface, including a handle provided at the end of the cutting torch, two air inlet connectors are provided on the handle, the air belt is inserted into the air inlet connectors, and a fixing connector is provided on the outside of the connection part of the air belt and the air inlet connector;

[0005] The fixing connector includes two semi-circular outer shells, one end of the two outer shells is hinged together, the two outer shells can be rotated and opened and closed, and the inner wall of the outer shell is adapted to the outer diameter of the air inlet connector and the air belt. The other end of the outer shell is fixedly connected by a retaining pin, and a number of positioning protrusions are provided on the inner side of the outer shell corresponding to the position of the air belt.

[0006] Further, an annular edge is provided on the outside of the air inlet connector, and an annular groove adapted to it is provided on the outer shell corresponding to the position of the annular edge.

[0007] Further, mounting wings are provided on one side of the outer shell away from its hinged end, and the two mounting wings are fixedly connected by the retaining pin.

[0008] Further, the retaining pin includes an upper pin rod and a lower pin rod. The mounting wing is provided with pin holes adapted to the upper pin rod and the lower pin rod. One end of the upper pin rod located in the pin hole is provided with a threaded blind hole, and one end of the lower pin rod located in the pin hole is provided with a threaded joint adapted to the threaded blind hole. The upper pin rod and the lower pin rod are threadedly connected.

[0009] Further, rod heads are provided at one ends of the upper pin rod and the lower pin rod located outside the mounting wing.

[0010] Further, the end of the outer shell is provided with joints that are fitted and installed with each other. The joint is provided with a shaft hole, and a hinge shaft is arranged in the shaft hole.

[0011] The above technical solution of the present utility model has the following beneficial effects: By providing a rotatable and openable fixed joint at the connection between the air belt and the air inlet joint, and buckling the fixed joint outside the connection, after fastening the fixed joint with the retaining pin, the positioning protrusions on its inner wall will abut against the surface of the air belt. While ensuring the stable installation of the air cylinder, the generation of indentation marks is reduced, thus ensuring the overall shape of the air belt, avoiding surface damage, reducing the loss of the air belt. Moreover, the retaining pin can be manually tightened without the aid of tools, and the operation is convenient and fast. Description of the Drawings

[0012] Figure 1 is the schematic diagram of the main view plane structure of the embodiment of the present utility model;

[0013] Figure 2 is Figure 1 the enlarged view at A in

[0014] Figure 3 is the schematic diagram of the sectional structure at the mounting wing of the embodiment of the present utility model;

[0015] Figure 4 is the schematic diagram of the top view plane of the fixed joint of the embodiment of the present utility model. Detailed Embodiment

[0016] In order to more clearly understand the above objects, features and advantages of the present utility model, the present utility model will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.

[0018] Such as Figures 1-4As shown in the figure, the fixing mechanism for the gas belt interface of the cutting torch in this embodiment includes a handle 1 provided at the end of the cutting torch. Two air inlet connectors 2 are provided on the handle 1. The gas belt 3 is inserted into the air inlet connector 2, and a fixing connector is provided on the outer side of the connecting portion of the gas belt 3 and the air inlet connector 2.

[0019] The fixing connector includes two semi-circular outer shells 4. One end of the two outer shells 4 is hinged together. The two outer shells 4 can be rotated to open and close, and the inner wall of the outer shell 4 is adapted to the outer diameter of the air inlet connector 2 and the gas belt 3. The other end of the outer shell 4 is fixedly connected by a retaining pin. A number of positioning protrusions 4a are provided on the inner side of the outer shell 4 at the position corresponding to the gas belt 3.

[0020] An annular edge 5 is provided on the outer side of the air inlet connector 2, and an annular groove adapted to it is provided on the outer shell 4 at the position corresponding to the annular edge 5.

[0021] Mounting wings 6 are provided on the side of the outer shell 4 away from its hinged end, and the two mounting wings 6 are fixedly connected by a retaining pin.

[0022] The retaining pin includes an upper pin rod 7 and a lower pin rod 8. The mounting wing 6 is provided with pin holes adapted to the upper pin rod 7 and the lower pin rod 8. A threaded blind hole is provided at one end of the upper pin rod 7 located in the pin hole, and a threaded joint 8a adapted to the threaded blind hole is provided at one end of the lower pin rod 8 located in the pin hole. The upper pin rod 7 and the lower pin rod 8 are threadedly connected.

[0023] Rod heads 9 are provided at one end of the upper pin rod 7 and the lower pin rod 8 located outside the mounting wing 6. The rod heads 9 play a role in limiting, and it is also convenient for the staff to rotate and fix the two pin rods by pinching the rod heads 9.

[0024] A connector 10 that is mutually cooperatively installed is provided at the end of the outer shell 4. A shaft hole is provided on the connector 10, and a hinge shaft is provided in the shaft hole. The two outer shells 4 can be rotated to open and close along the hinge shaft.

[0025] When the utility model is installed, first, the air belt 3 is inserted and fixed to the air inlet joint 2. Then, the two outer shells 4 are opened, the air inlet joint 2 and the air belt 3 are placed into the slot holes in the outer shell 4, and then the two outer shells 4 are closed so that their two installation wings 6 are butted. Then, a retaining pin is used to fix the two installation wings 6. When fixing, the upper pin rod 7 is inserted along the pin hole of the upper installation wing 6, and the lower pin rod 8 is inserted along the pin hole of the lower installation wing 6. During the simultaneous insertion of the two pin rods, either one of the pin rods is rotated or the two pin rods are rotated in two opposite directions simultaneously, so that the threaded joint 8a on the lower pin rod 8 is screwed into the threaded blind hole of the upper pin rod 7. As the screwing of the upper pin rod 7 and the lower pin rod 8 is completed, the two outer shells 4 are tightly combined together. At the same time, the positioning protrusion 4a in the outer shell 4 also abuts tightly against the air belt 3, and the positioning protrusion 4a presses against the surface of the air belt 3 to cause a certain deformation, so that the surface of the air belt 3 is concave. In this way, the connection between the air belt 3 and the air inlet joint 2 can be strengthened, and the installation is thus completed.

[0026] Fixing the air belt 3 and the air inlet joint 2 in this way can avoid the deep indentation caused by using a clamp, thereby protecting the air belt 3 and preventing damage to its surface due to excessive tightening. The positioning protrusion 4a only causes a shallow depression when pressing against the surface of the air belt 3, effectively avoiding damage to the surface of the air belt 3 caused by excessive tightening while ensuring the tightening effect.

[0027] The embodiments of the present utility model are given for the purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and to enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. The cutting gun gas belt interface fixing mechanism is characterized by: It comprises a handle arranged at the end of the cutting gun, the handle is provided with two air inlet joints, the air belt is plugged into the air inlet joints, and a fixed joint is arranged on the outer side of the connecting part between the air belt and the air inlet joint; The fixed joint includes two semicircular outer shells, one end of which is hinged together. The two outer shells can be rotated to open and close, and the inner wall of the outer shell is adapted to the outer diameter of the air inlet joint and the air belt. The other end of the outer shell is fixedly connected by a retaining pin, and a plurality of positioning protrusions are arranged on the inner side of the outer shell at the position corresponding to the air belt.

2. The cutting gun gas belt interface fixing mechanism according to claim 1, characterized in that: An annular edge is arranged on the outer side of the air inlet joint, and an annular groove matching with the annular edge is arranged on the outer shell at a position corresponding to the annular edge.

3. The cutting gun gas belt interface fixing mechanism according to claim 2, characterized in that: The shell is provided with a mounting wing on one side away from the hinge end thereof, and the two mounting wings are fixedly connected by the retaining pin.

4. The cutting gun gas belt interface fixing mechanism according to claim 3, characterized in that: The retaining pin includes an upper pin rod and a lower pin rod, a pin hole matched with the upper pin rod and the lower pin rod is provided on the mounting wing, a threaded blind hole is provided at one end of the upper pin rod located in the pin hole, a threaded joint matched with the threaded blind hole is provided at one end of the lower pin rod located in the pin hole, and the upper pin rod is threadedly connected with the lower pin rod.

5. The cutting gun gas belt interface fixing mechanism according to claim 4, characterized in that: The upper pin rod and the lower pin rod are both provided with a rod head at one end located outside the mounting wing.

6. The cutting gun gas belt interface fixing mechanism according to claim 5, characterized in that: The ends of the shell are provided with joints which are installed in cooperation with each other, the joints are provided with shaft holes, and the shaft holes are provided with hinge shafts.

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