A power supply switch for electric control box of tunnel boring machine

Abstract

The present invention provides a power supply switch for an electric control box of a tunnel boring machine, comprising a rotating shaft, a copper sleeve and a rotating wrench; the rotating shaft is arranged in the copper sleeve and can rotate in the copper sleeve, the front end of the rotating shaft is fixedly connected to the power switch of the electric control box through a power switch connecting device, and the rear part of the rotating shaft is fixedly connected to the rotating wrench; an oil storage groove is arranged on the contact surface between the rotating shaft and the copper sleeve, an oil filling hole connected to the oil storage groove is arranged in the rotating shaft, and an oil cup connected to the oil filling hole is fixedly arranged at the rear end of the rotating shaft. The power supply switch for an electric control box of a tunnel boring machine provided by the present invention can inject lubricating oil into the contact surface between the rotating shaft and the copper sleeve for lubrication, which not only facilitates the switching of the power supply switch, but also prevents rust on the surface of the rotating shaft.

Description

Technical Field

[0001] The invention relates to the technical field of tunneling equipment, and in particular to a power supply switch of an electric control box of a tunneling machine. Background Art

[0002] At present, with the continuous development of science and technology and productivity, cantilevered roadheaders are more and more widely used in coal mines and mining. Users' requirements for mining equipment are not only efficiency and safety, but also pay more attention to the reliability of equipment in long-term use. In the process of using the roadheader, the power supply switch of the electric control box of the roadheader often cannot be moved or is difficult to move after a period of use due to the rust of the rotating shaft of the power supply switch. This causes the roadheader to be unable to supply power or power off normally, and can only be powered on or off by the upper switch to promote the power supply or power off of the roadheader. Although the surface of the rotating shaft has been rusted and polished, due to the high water content and relatively high air humidity in the underground where the roadheader works, the rotating shaft of the power supply switch of the electric control box quickly rusts, which quickly causes the power supply switch to be unable to move or is difficult to move, thereby affecting the normal operation of the roadheader, reducing the working efficiency of the roadheader, and affecting production efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a power supply switch of an electric control box of a tunnel boring machine which can prevent the rust of a rotating shaft.

[0004] In order to solve the above technical problems, the present invention provides a power supply switch for an electrical control box of a tunnel boring machine, comprising a rotating shaft, a copper sleeve and a rotating wrench; the rotating shaft is arranged in the copper sleeve and can rotate in the copper sleeve, the front end of the rotating shaft is fixedly connected to the power switch of the electrical control box through a power switch connecting device, and the rear part of the rotating shaft is fixedly connected to the rotating wrench; an oil storage groove is arranged on the contact surface between the rotating shaft and the copper sleeve, an oil filling hole connected to the oil storage groove is arranged in the rotating shaft, and an oil cup connected to the oil filling hole is fixedly arranged at the rear end of the rotating shaft.

[0005] Furthermore, the oil injection hole includes an axial oil injection blind hole arranged at the rear axis of the rotating shaft and extending to the position of the oil storage groove, and a radial oil injection hole arranged at the radial position of the rotating shaft at the blind end of the axial oil injection blind hole and connecting the axial oil injection blind hole and the oil storage groove.

[0006] Furthermore, the oil storage groove is a rectangular annular groove arranged on the outer surface of the rotating shaft and / or the inner surface of the copper sleeve.

[0007] Furthermore, a sealing structure is arranged on the contact surface between the rotating shaft and the copper sleeve, and the sealing structure is arranged on both sides of the oil storage groove.

[0008] Furthermore, the sealing structure includes an annular sealing groove arranged on the rotating shaft and an O-ring arranged in the annular sealing groove.

[0009] Furthermore, the rotating wrench is a hollow structure and is sleeved on the rear of the rotating shaft.

[0010] Furthermore, the copper sleeve is fixedly arranged on a fixing seat, and the fixing seat is fixedly arranged on a wall plate of the electric control box.

[0011] Furthermore, a protective sleeve is fixedly arranged at the rear of the fixing seat, and the protective sleeve protects the rotating shaft and the oil cup and the rotating wrench connected to the rotating shaft.

[0012] Furthermore, a gasket and a retaining spring are arranged on the rotating shaft at a position located at the rear end of the copper sleeve. The retaining spring is fixedly arranged in an annular retaining groove on the rotating shaft, and the gasket is fixed between the retaining spring and the copper sleeve.

[0013] The present invention provides a power transmission switch of an electric control box of a tunnel boring machine. An oil storage groove is arranged on the contact surface between the rotating shaft and the copper sleeve of the power transmission switch, an oil filling hole connected to the oil storage groove is arranged in the rotating shaft, and an oil cup connected to the oil filling hole is fixedly connected to the rear end of the rotating shaft. Lubricating oil is injected through the oil cup, and the lubricating oil enters the oil storage groove from the oil filling hole to lubricate the contact surface between the rotating shaft and the copper sleeve of the power transmission switch. This not only facilitates the switching of the power transmission switch, but also prevents the surface of the rotating shaft from rusting, thereby solving the problem that the power transmission switch of the electric control box of the tunnel boring machine cannot be moved or is difficult to move due to rust on the rotating shaft after being used for a period of time, thereby ensuring the normal operation and working efficiency of the tunnel boring machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of a power supply switch in an electrical control box of a tunnel boring machine provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0015] See also Figure 1 The embodiment of the present invention provides a power supply switch for an electric control box of a tunnel boring machine, comprising a rotating shaft 1, a copper sleeve 3 and a rotating wrench 13. The rotating shaft 1 is installed in the copper sleeve 3 and can rotate in the copper sleeve 3, the front end of the rotating shaft 1 is fixedly connected to the power switch connecting device 5, the power switch connecting device 5 is fixedly connected to the power switch of the electric control box of the tunnel boring machine, and the rear part of the rotating shaft 1 is fixedly connected to the rotating wrench 13. When the rotating wrench 3 is turned, the rotating wrench 3 drives the rotating shaft 1 to rotate in the copper sleeve 3, thereby driving the opening and closing of the power switch of the electric control box fixedly connected to the rotating shaft 1 through the power switch connecting device 5.

[0016] The copper sleeve 3 is fixedly mounted on the fixing seat 6, and the fixing seat 6 is fixedly connected to the electric control box wall plate 4. In order to prevent the shaft 1 from axial movement, a gasket 9 and a retaining spring 10 are arranged at the rear end of the copper sleeve 3. The retaining spring 10 is fixedly mounted in the annular groove on the shaft 1, and the gasket 9 is fixed between the retaining spring 10 and the copper sleeve 3.

[0017] An oil storage groove 7 is provided on the contact surface between the rotating shaft 1 and the copper sleeve 3, an oil filling hole connected to the oil storage groove 7 is provided in the rotating shaft 1, and an oil cup 12 connected to the oil filling hole 8 is fixedly connected to the rear end of the rotating shaft (1). Lubricating oil is injected into the oil cup 12 by a manual dry oil pump, and the lubricating oil is injected into the oil storage groove 7 through the oil filling hole, so as to lubricate the contact surface between the rotating shaft 1 and the copper sleeve 3 of the power transmission switch, which not only facilitates the switching of the power transmission switch, but also prevents the surface of the rotating shaft 1 from rusting, thereby solving the problem that the power transmission switch of the electric control box of the tunnel boring machine cannot be moved or is difficult to move because the rotating shaft 1 is rusted after being used for a period of time.

[0018] The oil storage groove 7 can be a rectangular annular groove arranged on the outer surface of the rotating shaft 1, or a rectangular annular groove arranged on the inner surface of the copper sleeve 3, or a rectangular annular groove arranged at a relative position between the outer surface of the rotating shaft 1 and the inner surface of the copper sleeve 3. Of course, the oil storage groove 7 can also be an annular groove with a cross-section of other shapes, such as a trapezoidal annular groove. The oil storage groove 7 can also be a square groove arranged at intervals on the outer circumferential surface of the rotating shaft 1. Of course, the oil storage groove 7 of the present invention is not limited to the above-mentioned cases. Any oil storage groove 7 that can play an oil storage role and can make the lubricating oil play a lubricating and rust-proof role on the contact surface between the rotating shaft 1 and the copper sleeve 3 is within the protection scope of the present invention. As a specific embodiment of the present invention, the oil storage groove 7 is a rectangular annular groove arranged on the outer surface of the rotating shaft 1.

[0019] The oil injection hole has various forms, and all forms of oil injection holes that can ensure that the lubricating oil injected into the oil cup 12 can smoothly reach the oil storage groove 7 are within the protection scope of the present invention. As a specific embodiment of the present invention, the oil injection hole includes an axial oil injection blind hole 8 extending inward from the axis of the rear end of the shaft 1 to the position of the oil storage groove 7, and a radial oil injection hole 14 arranged in the radial direction of the shaft 1 and extending from the blind end of the axial oil injection blind hole 8 to the oil storage groove 7. The radial oil injection hole 14 connects the axial oil injection blind hole 8 and the oil storage groove 7. There can be multiple radial oil injection holes 14, which are evenly distributed in the radial direction of the same circumference of the shaft 1. When the lubricating oil is injected into the oil cup 12, the lubricating oil enters the axial oil injection blind hole 8 from the oil cup 12, and when the lubricating oil reaches the blind end of the axial oil injection blind hole 8, it enters the oil storage groove 7 from the radial oil injection hole 14, thereby playing a lubricating and rust-proof role on the contact surface between the shaft 1 and the copper sleeve 3.

[0020] A sealing structure 2 is also provided on the contact surface between the rotating shaft 1 and the copper sleeve 3. The sealing structure 2 is provided on both sides of the oil storage groove 7, which can not only prevent the lubricating oil in the oil storage groove 7 from leaking out of the copper sleeve 3, but also prevent external dust from entering the rotating shaft 1, so that the rotating shaft 1 can achieve a better use effect. All sealing structures 2 that can play an anti-seepage and dust-proof role are within the protection scope of the present invention. As a specific embodiment of the present invention, the sealing structure 2 includes an annular sealing groove provided on the rotating shaft 1 and an O-ring provided in the annular sealing groove. In order to achieve a better sealing effect, a plurality of annular sealing grooves and corresponding O-rings can be provided on the rotating shaft 1 on both sides of the oil storage groove 7.

[0021] The rotating wrench 13 is a wrench-like component that can be rotated by manual movement. In order to facilitate the injection of lubricating oil into the oil cup 12 connected to the rear end of the rotating shaft 1, the rotating wrench 13 is designed as a hollow structure. The rotating wrench 13 is sleeved on the rear end of the rotating shaft 1 and is fixedly connected to the rotating shaft. When lubricating oil needs to be added to the oil cup 12, the pipe of the manual dry oil pump can be connected to the oil cup 12 from the side of the rotating wrench 13 facing away from the rotating shaft 1, and oil can be directly injected.

[0022] A protective sleeve 11 is fixedly connected to the rear of the fixing seat (6), and the protective sleeve 11 is a circular protective sleeve, which covers the outside of the rotating shaft 1 and the oil cup 12 and the rotating wrench 13 connected to the rotating shaft 1, and can prevent the rotating shaft 1, the oil cup 12, the rotating wrench 13 and other components from being damaged by falling rocks in the well during the working process of the tunnel boring machine.

[0023] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A power supply switch for an electric control box of a tunnel boring machine, characterized in that: The invention comprises a rotating shaft (1), a copper sleeve (3) and a rotating wrench (13); the rotating shaft (1) is arranged in the copper sleeve (3) and can rotate in the copper sleeve (3); the front end of the rotating shaft (1) is fixedly connected to the power switch of the electric control box through a power switch connecting device (5); the rear end of the rotating shaft (1) is fixedly connected to the rotating wrench (13); an oil storage groove (7) is arranged on the contact surface between the rotating shaft (1) and the copper sleeve (3); an oil filling hole communicating with the oil storage groove (7) is arranged in the rotating shaft (1); and an oil cup (12) communicating with the oil filling hole (8) is fixedly arranged at the rear end of the rotating shaft (1); A sealing structure (2) is provided on the contact surface between the rotating shaft (1) and the copper sleeve (3), and the sealing structure (2) is provided on both sides of the oil storage groove (7); The copper sleeve (3) is fixedly arranged on a fixing seat (6), and the fixing seat (6) is fixedly arranged on a wall plate (4) of an electric control box; A protective sleeve (11) is fixedly disposed at the rear of the fixing seat (6), and the protective sleeve (11) protects the outside of the rotating shaft (1) and the oil cup (12) and the rotating wrench (13) connected to the rotating shaft (1); A gasket (9) and a retaining spring (10) are provided on the rotating shaft (1) at a position located at the rear end of the copper sleeve (3); the retaining spring (10) is fixedly arranged in an annular retaining groove on the rotating shaft (1); and the gasket (9) is fixed between the retaining spring (10) and the copper sleeve (3).

2. The power supply switch of the electric control box of the tunnel boring machine according to claim 1 is characterized in that: The oil injection hole comprises an axial oil injection blind hole (8) arranged at the rear axis of the rotating shaft (1) and extending to the position of the oil storage groove (7), and a radial oil injection hole (14) arranged at a radial position of the rotating shaft (1) at the blind end of the axial oil injection blind hole (8) and connecting the axial oil injection blind hole (8) and the oil storage groove (7).

3. The power supply switch of the electric control box of the tunnel boring machine according to claim 2 is characterized in that: The oil storage groove (7) is a rectangular annular groove arranged on the outer surface of the rotating shaft (1) and / or the inner surface of the copper sleeve (3).

4. The power supply switch of the electric control box of the tunnel boring machine according to claim 1 is characterized in that: The sealing structure (2) comprises an annular sealing groove arranged on the rotating shaft (1) and an O-type sealing ring arranged in the annular sealing groove.

5. The power supply switch of the electric control box of the tunnel boring machine according to claim 1 is characterized in that: The rotating wrench (13) is a hollow structure and is sleeved on the rear part of the rotating shaft (1).

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