Height-adjustable tool

Abstract

The utility model discloses a height-adjustable tool, and relates to the technical field of mechanical tools. The device comprises a base, wherein one side of the base is connected with a handle; the top end of the base is connected with a vertically-arranged threaded rod, the upper portion of the threaded rod is sleeved with a nut, and threads on the inner wall of the nut are matched with threads on the threaded rod. The utility model provides the height-adjustable tool, the height-adjustable tool is adopted as an auxiliary tool, and the rectifier diode of the ABB direct current DCS800 transmission device can be quickly replaced without damage, so that the problems that the speed is low and the surface of the diode is easily damaged in the existing mode of replacing the diode of the ABB direct current DCS800 transmission device are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical tool technical field especially a kind of auxiliary tool for replacing rectifier diode of ABB direct current DCS800 transmission device. BACKGROUND

[0002] In the key production links such as pickling, skin pass mill unit of cold-rolled strip mill, ABB direct current DCS800 transmission device, as the core component of driving system, plays a vital role.Through internal precision components, especially 8 rectifier diodes, alternating current is converted into stable direct current 900V output, to provide continuous, reliable power support for unit.However, in the actual operation process, due to the fluctuation of power grid voltage and long-term withstand high load operation, rectifier diode inside DCS800 transmission device is easily impacted by overvoltage, thereby leading to damage, affecting the normal operation of production line.

[0003] For this problem, the traditional solution is to rely on special tools provided by ABB manufacturer to replace diode.However, this replacement mode has significant limitations.Firstly, replacement process needs manual force to pry open the heat sink inside transmission device, which is not only complicated to operate, but also easily damages other diodes around due to improper force, increases maintenance cost and downtime.Secondly, when reinstalling new diode, it is also easy to scratch the surface of diode, affect its electrical performance and service life.These problems not only reduce the replacement efficiency, but also increase the risk and difficulty of equipment maintenance.

[0004] Therefore, it is particularly important to develop an auxiliary tool that can efficiently and non-destructively replace rectifier diode of ABB direct current DCS800 transmission device. SUMMARY

[0005] The utility model provides a height adjustable tool, adopt this height adjustable tool as auxiliary tool, can be quick, non-damage to ABB direct current DCS800 transmission device rectifier diode replacement, to solve the existing ABB direct current DCS800 transmission device diode replacement mode there is the problem of slow speed, easy to damage diode surface.

[0006] To solve the above problems, the technical scheme adopted by the utility model is:

[0007] It includes base, one side of the base is connected with handle;The top end of the base is connected with the vertically arranged screw rod, the upper part of the screw rod is equipped with nut, the screw thread of the inner wall of the nut is matched with the screw thread on the screw rod.

[0008] In the above technical scheme, more specific technical scheme can also be: the top end of the nut is paved with gasket.

[0009] Further, the gasket is fixedly welded on the top end of the nut.

[0010] Further, the handle is fixedly welded on one side of the base.

[0011] Further, the height adjustable tool has a height activity range of 45mm-55mm.

[0012] Further, the height of the base and the threaded rod is 45mm.

[0013] Further, the height of the nut is 25mm.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model discloses a rectifier diode replacement mode of traditional ABB direct current DCS800 transmission device is innovated and improved, and the original practice of laboriously prying away the cooling fin is given up, and a screw thread rotation mechanism is used to pry open the cooling fin, and this reform not only greatly reduces the labor intensity of operating personnel, but also remarkably improves the replacement efficiency of the rectifier diode, ensures the high efficiency and convenience of the operation process, and more importantly, through the screw thread rotation prying open cooling fin mode, the rectifier diode surface scratching problem caused by insufficient height between cooling fins is effectively avoided, so that the rectifier diode is intact in the replacement process, and the performance and service life are further guaranteed, and therefore, the utility model not only improves the operation reliability, but also provides powerful guarantee for the stable operation of equipment.

[0016] 2. The utility model discloses a gasket is laid on the top end of the nut, so that the top of the nut and the contacted component (namely rectifier diode) are protected, and the abrasion or damage of the two caused by direct friction is prevented.

[0017] 3. The utility model discloses a fixedly welded mode is connected on the top end of the nut, so that the gasket and the nut form a stable and firm whole. DRAWINGS

[0018] Figure 1 It is the front view of the utility model.

[0019] Figure 2 It is the left view of the utility model.

[0020] Figure 3 It is the top view of the utility model.

[0021] Figure 4 It is the perspective view of the utility model.

[0022] Figures 1-4 In particular, reference numeral 1 denotes a base, 2 denotes a handle, 3 denotes a threaded rod, 4 denotes a nut, and 5 denotes a gasket. DETAILED DESCRIPTION

[0023] The utility model will be described in further detail below in combination with the drawings: EMBODIMENT

[0024] As Figures 1-4 shown in the drawings, the utility model discloses a height-adjustable tool, which comprises a base 1, one side of the base 1 is connected with a handle 2, the top end of the base 1 is connected with a vertically arranged threaded rod 3, the upper part of the threaded rod 3 is externally sleeved with a nut 4, the threads on the inner wall of the nut 4 are matched with the threads on the threaded rod 3, the nut 4 serves as a movable supporting piece, the screw thread on the threaded rod 3 is driven by rotating the handle 2, so that the heat sink is pried open by the nut 4, and the replacement of the rectifier diode is facilitated.

[0025] Preferably, the top end of the nut 4 can be paved with a gasket 5, and the existence of the gasket 5 can protect the top of the nut 4 and the components (i.e. the rectifier diode) in contact with the nut 4, so as to prevent abrasion or damage of the two due to direct friction.

[0026] Preferably, the gasket 5 is fixedly welded on the top end of the nut 4, and the fixed welding connection mode forms a stable and firm whole between the gasket 5 and the nut 4.

[0027] Preferably, the handle 2 is fixedly welded on one side of the base, and the fixed welding connection mode has the advantages of high strength, durability, good vibration resistance, simplified assembly process, better integrated appearance and the like compared with other connection modes.

[0028] Preferably, the height adjustment range of the utility model is 45mm-55mm. This is because the height between the heat sinks of the ABB direct current DCS800 transmission device is 30mm, the middle positioning pin of the heat sink is about 5mm, and the thickness of the rectifier diode is 10mm, so it is necessary to pry open at least 15mm between the two heat sinks to take out the rectifier diode of the ABB direct current DCS800 transmission device.

[0029] Preferably, the height of the base 1 and the threaded rod 3 is 45mm in total.

[0030] Preferably, the height of the nut 4 is 25mm.

[0031] In addition, the top end face of the nut 4 can also be widened into a circular shape, so as to increase the contact surface between the utility model and the rectifier diode of the ABB direct current DCS800 transmission device and improve the stability.

[0032] The specific operation of replacing the rectifier diode of the ABB direct current DCS800 transmission device by using the utility model as an auxiliary tool is as follows:

[0033] The utility model is adjusted to the lowest height and is inserted into the gap between the heat dissipation fins of the ABB direct current DCS800 transmission device, the utility model nut 4 is rotated counterclockwise to open the heat dissipation fins, the opening height can be the rectifier diode, and after replacing the new rectifier diode, the utility model nut 4 is rotated clockwise to the lowest height again, and the utility model nut 4 is taken out.

[0034] It should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A height-adjustable tool, characterized in that: The device includes a base with a handle attached to one side; a vertically mounted threaded rod is attached to the top of the base, and a nut is fitted over the upper part of the threaded rod, with the threads on the inner wall of the nut matching the threads on the threaded rod.

2. The height-adjustable tool according to claim 1, characterized in that: A washer is placed on the top of the nut.

3. The height-adjustable tool according to claim 2, characterized in that: The washer is fixedly welded to the top of the nut.

4. A height-adjustable tool according to claim 1, 2, or 3, characterized in that: The handle is fixedly welded to one side of the base.

5. The height-adjustable tool according to claim 4, characterized in that: The height-adjustable tool has a height range of 45 mm to 55 mm.

6. The height-adjustable tool according to claim 5, characterized in that: The combined height of the base and the threaded rod is 45mm.

7. A height-adjustable tool according to claim 6, characterized in that: The height of the nut is 25mm.

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