Device suitable for disassembling and assembling round nuts of motor train unit

Abstract

The utility model belongs to the field of motor train unit overhaul and maintenance, and discloses a device suitable for dismounting a round nut of a motor train unit, which comprises a handle, a head part and a connector, the head part is arranged at the first end of the handle, a convex part matched with a notch of the round nut is arranged on the head part, and the head part can be attached to the whole body of the round nut; the connector is arranged at the second end of the handle and used for being externally connected with a lengthening device or a torsion device. By means of the device, the connecting round nut for the air valve of the coupler of the motor train unit can be conveniently and rapidly disassembled, working efficiency is improved, safety and accuracy in the operation process are guaranteed, and the conditions of equipment damage and personnel injury in the disassembling and assembling process are avoided.

Description

Technical Field

[0001] The utility model belongs to the field of EMU overhaul and maintenance, and in particular relates to a device suitable for disassembling and assembling round nuts of EMUs. Background Art

[0002] The EMU close-fitting coupler is provided with a compressed air pipeline joint to realize the transmission of compressed air. There is a gas valve device in the compressed air pipeline joint to ensure good air tightness of the air pipeline when the close-fitting coupler is connected. The compressed air pipeline joint is connected to the air supply pipeline through the "coupler gas valve connecting round nut (hereinafter referred to as the round nut)". When removing or installing the gas valve, it is necessary to remove or tighten the round nut first. Due to factors such as the large diameter of the round nut and the narrow installation space, the existing round nut disassembly and assembly device cannot be used well with the torque wrench in the above narrow environment, and it is impossible to ensure that the torque value applied to the round nut by the disassembly and assembly device meets the specified requirements; and because the torque wrench corresponding to the torque range is too large, it was difficult to calibrate it effectively in the past, and the head of the previous torque wrench could not cooperate well with the round nut, and it was easy to slip during the calibration process. The above situation has the risk of equipment damage and personnel injury. At present, there is a lack of a device suitable for disassembling and assembling round nuts of EMUs to facilitate the disassembly and assembly of round nuts and avoid equipment damage and personal injury during the disassembly and assembly process.

[0003] Therefore, a new technology is needed to solve the problem that the prior art lacks a device suitable for disassembling and assembling round nuts of train sets. Utility Model Content

[0004] In order to solve the above problems in the prior art, the utility model provides a device suitable for disassembling and assembling round nuts in EMUs, which can facilitate the disassembly and assembly of round nuts in EMUs and avoid equipment damage and personal injury during the disassembly and assembly process.

[0005] The utility model adopts the following technical solutions:

[0006] A device suitable for disassembling and assembling round nuts of EMUs comprises a handle, a head and a connector; the head is arranged at the first end of the handle, and is provided with a convex portion matching the notch of the round nut, and the head can fit the circumference of the round nut; the connector is arranged at the second end of the handle and is used for externally connecting an extension device or an external torque device.

[0007] Furthermore, the handle is in the shape of a cylinder or a square.

[0008] Furthermore, the handle is a body of variable diameter or a body of constant cross-section.

[0009] Furthermore, the head is an arc-shaped head, and the convex portion is provided at the end of the arc-shaped head.

[0010] Furthermore, the protrusion is a square block, and the square block matches the notch of the outer ring of the round nut.

[0011] Furthermore, a spring pin is provided on the connecting head.

[0012] Furthermore, the extension device is an extension rod; a first interface is provided at one end of the extension rod, and a pin hole matching the spring pin is provided in the first interface; the first interface is used to be sleeved with the connector.

[0013] Furthermore, the torque device is a torque wrench; the torque wrench is provided with a second interface, the second interface is provided with a pin hole matching the spring pin; the second interface is used for sleeve connection with the connector.

[0014] Furthermore, the connector is in the shape of a cylinder or a square.

[0015] Furthermore, the handle is a high-strength steel handle; the head is a high-strength steel head; the connecting head is a high-strength steel connecting head; the strength of the high-strength steel handle, the high-strength steel head and the high-strength steel connecting head is at least greater than 300Mpa.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model is a device suitable for disassembling and assembling round nuts of EMUs, comprising a handle, a head and a connector, wherein the head is arranged at the first end of the handle, and a convex portion matching the notch of the round nut is arranged on the head, and the head can fit the circumference of the round nut; the connector is arranged at the second end of the handle, and is used for externally connecting an extension device or an external torque device; in this design, the head and its convex portion can well match the circumference and notch of the round nut, the handle can facilitate people to hold and apply torque, and the connector can facilitate people to use the external extension device or the external torque device, and when the connector is externally connected to other devices, the mechanical connection should be ensured to be in place to prevent loosening or detachment during operation; the utility model is preferably made of high-strength steel as a whole, and the overall thickness of the device is increased to improve the rigidity and strength of the structure, so as to ensure that the device can withstand large torque during disassembly and assembly without breaking or deformation. By using the utility model, the "EMU car coupler air valve connecting round nut" can be conveniently and quickly disassembled and assembled, the work efficiency can be improved, the safety and accuracy during the operation can be ensured, and the equipment damage and personnel injury during the disassembly and assembly process can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The technology of the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0019] Figure 1It is a stereoscopic schematic diagram of the device from the first perspective;

[0020] Figure 2 is a stereoscopic schematic diagram of the second viewing angle of the device;

[0021] Figure 3 is a front elevation view of the device;

[0022] Figure 4 This is the rear elevation view of the device.

[0023] Reference numerals:

[0024] 1-handle; A-first end; B-second end;

[0025] 2-head; 21-convex part;

[0026] 3-connector; 31-spring pin. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the utility model, so as to fully understand the purpose, scheme and effect of the utility model. It should be noted that the embodiments and features in the embodiments in this application can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0028] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the accompanying drawings.

[0029] Reference Figures 1 to 4 , a device suitable for disassembling and assembling round nuts of EMUs, comprising a handle 1, a head 2 and a connector 3; the head 2 is arranged at the first end A of the handle 1, and the head 2 is provided with a convex portion 21 matching the notch of the round nut, and the head 2 can fit around the circumference of the round nut; the connector 3 is arranged at the second end B of the handle 1, and is used for an external lengthening device or an external torque device; when the utility model is used, the convex portion 21 is embedded in the notch of the round nut, the head 2 fits with the outer ring surface of the round nut, and by applying a force to the handle 1, the round nut is driven to rotate, thereby realizing the disassembly and assembly of the "coupler gas valve connecting the round nut".

[0030] In one embodiment, the handle 1 is a cylindrical body or a square body; Figure 1 to Figure 2 In this embodiment, the handle 1 is a cylinder.

[0031] In one embodiment, the handle 1 is a variable diameter body or a constant cross-section body; Figure 1 to Figure 2 In this embodiment, the handle 1 is a variable diameter body, with a first end A having a larger shaft diameter and a second end B having a smaller shaft diameter.

[0032] Reference Figures 1 to 4 In one embodiment, the head 2 is an arc-shaped head, and the protrusion 21 is provided at the end of the arc-shaped head; the arc-shaped head adapts to the outer ring of the round nut, improves the accuracy during the disassembly and assembly process, and reduces the damage to the workpiece caused by the round nut during the disassembly and assembly process, while the protrusion 21 ensures the stable docking and torque application between the device and the notch of the round nut.

[0033] Reference Figure 1 to Figure 2 In one embodiment, the protrusion 21 is a square block, and the square block matches the notch of the outer ring of the round nut.

[0034] Reference Figure 1 to Figure 2 In one embodiment, a spring pin 31 is provided on the connecting head 3 .

[0035] In one embodiment, the extension device is an extension rod; a first interface is provided at one end of the extension rod, and a pin hole matching the spring pin is provided in the first interface; the first interface is used to be socketed with the connecting head 3; when socketed, the spring pin 31 cooperates with the pin hole, and the connecting head 3 and the extension rod are fixed, so that a large torque can be easily applied, which is convenient for applying pre-tightening force during installation and applying initial torque during disassembly; this design solves the problem that the disassembly and assembly device cannot be effectively used due to limited space, and improves work efficiency.

[0036] In one embodiment, the torque device is a torque wrench; the torque wrench is provided with a second interface, and the second interface is provided with a pin hole matching the spring pin; the second interface is used to be sleeved with the connector 3; when sleeved, the spring pin 31 cooperates with the pin hole, and the connector 3 and the torque wrench are fixed, so that the torque of the round nut can be accurately controlled; this design can better control the torque and improve the disassembly and assembly accuracy and work efficiency.

[0037] In one embodiment, the first interface and the second interface are the same, both being 3 / 4 universal interfaces.

[0038] In one embodiment, the connector 3 is a cylindrical body or a square body; Figure 1 to Figure 2 In this embodiment, the connector 3 is a square body.

[0039] In one embodiment, the handle 1 is a high-strength steel handle; the head 2 is a high-strength steel head; the connector 3 is a high-strength steel connector; the strength of the high-strength steel handle, the high-strength steel head and the high-strength steel connector is at least greater than 300Mpa.

[0040] The utility model can be flexibly connected to an external extension device or an external torque device to disassemble and assemble the round nut under different operation requirements, as follows:

[0041] (1) During the disassembly and assembly process under normal conditions, the operator fits the protrusion 21 of the device into the groove of the outer ring of the round nut, and can sleeve the extension rod on the connector to extend the grip length of the handle; when the round nut is subjected to torque calibration, the extension rod can be taken out, and then the connector is connected to a torque wrench for calibration. Compared with ordinary maintenance tools, the utility model optimizes the operator's force generation method.

[0042] (2) During the disassembly and assembly process in a narrow space, the operator engages the protrusion 21 of the device with the groove on the outer ring of the round nut, holds the handle 1 by hand, and disassembles and assembles the round nut. During the torque calibration process, the connector 3 connected to the bottom of the handle 2 can be further connected to an external torque wrench for calibration.

[0043] By connecting extension rods of different lengths and torque wrenches with different torque ranges, it can adapt to the needs of different disassembly and assembly operations, effectively avoiding workpiece damage caused by improper matching between the disassembly and assembly device and the round nut, which is conducive to saving manpower investment, reducing operation safety risks, and saving operating costs.

[0044] For other contents of the device for disassembling and assembling round nuts of EMUs described in the utility model, please refer to the prior art and will not be described in detail here.

[0045] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A device suitable for disassembling and assembling round nuts of EMUs, characterized in that: It includes a handle, a head and a connector; the head is arranged at the first end of the handle, and is provided with a convex portion matching the notch of the round nut, and the head can fit around the circumference of the round nut; the connector is arranged at the second end of the handle and is used for an external extension device or an external torque device.

2. The device for disassembling and assembling round nuts of EMUs according to claim 1, characterized in that: The handle is a cylindrical body or a square body.

3. The device for disassembling and assembling round nuts of EMU according to claim 1, characterized in that: The handle is a body of variable diameter or a body of constant cross section.

4. The device for disassembling and assembling round nuts of EMUs according to claim 1, characterized in that: The head is an arc-shaped head, and the convex portion is arranged at the end of the arc-shaped head.

5. The device for disassembling and assembling round nuts of EMUs according to claim 1, characterized in that: The convex part is a square block, and the square block matches the notch of the outer ring of the round nut.

6. The device for disassembling and assembling round nuts of EMUs according to claim 1, characterized in that: The connecting head is provided with a spring pin.

7. The device for disassembling and assembling round nuts of EMUs according to claim 6, characterized in that: The extension device is an extension rod; a first interface is provided at one end of the extension rod, and a pin hole matching the spring pin is provided in the first interface; the first interface is used for sleeve connection with the connector.

8. The device for disassembling and assembling round nuts of EMUs according to claim 6, characterized in that: The torque device is a torque wrench; the torque wrench is provided with a second interface, and the second interface is provided with a pin hole matching the spring pin; the second interface is used for sleeve connection with the connector.

9. The device for disassembling and assembling round nuts of EMUs according to claim 1, characterized in that: The connector is a cylindrical body or a square body.

10. The device for disassembling and assembling round nuts of EMUs according to any one of claims 1 to 9, characterized in that: The handle is a high-strength steel handle; the head is a high-strength steel head; the connecting head is a high-strength steel connecting head; the strength of the high-strength steel handle, the high-strength steel head and the high-strength steel connecting head is at least greater than 300Mpa.

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