Tool for quickly dismounting or mounting baffle in wind area of generator

Abstract

The utility model discloses a tool for quickly dismounting or mounting a baffle in a wind area of a generator, which comprises a transmission cylinder, one end of the transmission cylinder is connected with a nut sleeve, a guide rod is inserted in a transmission rod, the guide rod can move up and down in the transmission cylinder, one end of the guide rod can extend out of the transmission cylinder, and the other end of the guide rod can extend out of the transmission cylinder. The end, extending out of the nut sleeve, of the guide rod is connected with a threaded column, and external threads on the threaded column are matched with internal threads of a nut screwed on the nut sleeve. An existing nut screwing device is improved, the guide rod is additionally arranged, and the threaded column is arranged at the end of the guide rod, so that the nut can be temporarily fixed through the threaded column in the nut dismounting process, and unnecessary safety accidents caused by the fact that the nut falls into a generator stator chamber in the nut dismounting process are avoided; in the nut installation process, the clear installation position guide is provided for the nut, and the installation efficiency of the nut on the baffle can be improved to a certain degree.

Description

Technical Field

[0001] The utility model relates to the technical field of generator disassembly equipment, in particular to a tool used for generator maintenance. Background Art

[0002] Generator overhaul has always been an important part of power production activities and a basic work to ensure the safe, stable and economical operation of generator sets. With the rapid development of society, higher and higher requirements are put forward for the efficiency and safety of generator overhaul. Before dismantling and overhauling the 600MW generator to extract the generator rotor, the wind zone baffles at both ends of the generator need to be removed, and the wind zone baffles need to be restored after inserting the rotor. The baffles are generally installed in the wind zone with bolts and nuts. Whether it is removing the nuts or removing the baffles, due to the limited working environment, it is necessary to use the disassembly tools to pass a long stroke to contact the nuts or baffles. This leads to the process of removing the nuts or baffles or installing the nuts or baffles. The nuts or baffles are easy to fall from the tools into the generator stator chamber. Once they fall, due to the obstruction of the internal structure of the generator, the process of removing the nuts or baffles is very troublesome, which greatly affects the efficiency of the generator overhaul. In serious cases, it may also cause safety impacts on the operators or generators. Utility Model Content

[0003] The utility model aims to provide a tool for quickly disassembling or installing a wind zone baffle of a generator, which can prevent the baffle or nut from falling off during the conveying process.

[0004] The utility model is achieved through the following technical scheme: a tool for quickly disassembling or installing a wind zone baffle of a generator, comprising a transfer cylinder, one end of which is connected to a nut sleeve, a guide rod is inserted inside the transfer rod, and the guide rod can move up and down in the transfer cylinder so that one end of the guide rod can extend out of the transfer cylinder and the other end can also extend out of the nut sleeve. One end of the guide rod extending out of the nut sleeve is connected to a threaded column, and the external thread on the threaded column matches the internal thread of a nut screwed by the nut sleeve.

[0005] The working principle of this technical solution is that an additionally arranged guide rod and a threaded column at its end can temporarily fix the nut when the nut is screwed in, and then provide directional support to the nut when the nut sleeve is screwed out or screwed in to prevent the nut from falling off, so that the nut can be stably passed through the space inside the generator to achieve installation or removal of the nut. The whole process can not only prevent the nut from falling off, but also greatly improve the installation efficiency of the nut.

[0006] In order to better implement the utility model, further, a screwing handle is provided on the outer wall of one end of the transfer cylinder away from the nut sleeve.

[0007] In order to better implement the utility model, further, a flat head is provided at one end of the guide rod away from the threaded column.

[0008] In order to better realize the utility model, further, one end of the nut sleeve is provided with an external thread, the end of the transfer tube connected to the nut sleeve is provided with an internal thread, and the nut sleeve and the transfer tube are threadedly connected.

[0009] In order to better realize the utility model, further, one end of the threaded column is provided with an external thread, the end of the guide rod connected to the threaded column is provided with an internal thread, and the threaded column and the guide rod are threadedly connected.

[0010] In order to better implement the present utility model, further, a side wall of one end of the guide rod extending out of the transfer cylinder is also provided with a hook for taking out the baffle.

[0011] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0012] (1) The utility model improves the existing nut screwing device, adds a guide rod, and arranges a threaded column at the end of the guide rod, so that the nut can be temporarily fixed by the threaded column during the removal process, thereby preventing the nut from falling into the stator chamber of the generator during the removal process, thereby causing unnecessary safety accidents;

[0013] (2) The utility model improves the existing nut screwing device, adds a guide rod, and arranges a threaded column at the end of the guide rod. During the installation of the nut, on the one hand, it can prevent the nut from falling off, and on the other hand, it can provide a clear installation position guide for the nut, which can improve the installation efficiency of the nut on the baffle to a certain extent;

[0014] (3) The utility model has a simple structure, is convenient and practical, and can better complete the installation and removal process of the baffle nut within the limited space of the generator, thereby preventing the nut from falling off during the transmission process. It has good operability and applicability, and is suitable for wide promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the explosion structure of the utility model.

[0018] Among them: 1—transmission cylinder, 2—nut sleeve, 3—guide rod, 4—threaded column, 5—screwing handle, 6—hook, 7—nut, 8—bolt. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Embodiment 1:

[0023] The main structure of this embodiment is as follows: Figure 1 , Figure 2 As shown, it includes a transfer cylinder 1, one end of which is connected to a nut sleeve 2, a guide rod 3 is inserted inside the transfer rod, and the guide rod 3 can move up and down in the transfer cylinder 1, so that one end of the guide rod 3 can extend out of the transfer cylinder 1, and the other end can also extend out of the nut sleeve 2. One end of the guide rod 3 extending out of the nut sleeve 2 is connected to a threaded column 4, and the external thread on the threaded column 4 matches the internal thread of the nut 7 screwed on the nut sleeve 2.

[0024] The specific use process is that when the nut 7 on the baffle needs to be removed, the transfer tube 1 is first extended into the generator set, and the guide rod 3 is also extended into the generator set. If the nut 7 is connected closely to the bolt 8, that is, the stud of the bolt 8 extends far beyond the nut 7, the guide rod 3 and the threaded column 4 at its end are first retracted into the transfer tube 1 to prevent the guide rod 3 and the threaded column 4 from interfering with the nut sleeve 2. Then, use the transfer tube 1 to cover the nut 7 to be removed with the nut sleeve 2, rotate the transfer tube 1, and use the nut sleeve 2 to loosen the nut 7. After the nut 7 is partially out of the stud of the bolt 8, extend the guide rod 3, so that the threaded column 4 at the end of the guide rod 3 abuts against the threaded mouth of the nut 7, rotate the guide rod 3 to screw the threaded column 4 into the nut 7, and after the nut 7 is partially screwed into the threaded column 4, use the transfer tube 1 to cover the nut 7 with the nut sleeve 2, rotate the transfer tube 1, and remove the entire nut 7. At this time, the nut 7 is partially fixed on the threaded column 4 at the end of the guide rod 3 and will not be separated from it. Then take out the transfer tube 1 together with the guide rod 3 inside it.

[0025] Note that the threaded column 4 can be arranged with threads so that the nut 7 can be more deeply connected to the threaded column 4 when being screwed by the nut sleeve 2, and will not be separated from the threaded column 4.

[0026] When installing the nut 7 on the baffle, the nut 7 can be partially installed on the threaded column 4 of the guide rod 3, and then the transfer tube 1 can be used to extend the entire guide rod 3 into the stud where the nut 7 needs to be installed. Then, the guiding effect of the guide rod 3 can be used to make the nut 7 abut against the stud of the bolt 8, and then the transfer tube 1 can be used to make the entire nut sleeve 2 enter the nut 7. The transfer tube 1 is rotated to drive the nut sleeve to screw the nut 7 into the stud of the bolt 8 and tighten it. At this time, the nut 7 rotates under the action of the nut sleeve 2 and separates from the threaded column 4 at the end of the guide rod 3.

[0027] Embodiment 2:

[0028] Based on the above embodiment, this embodiment further defines the structure of the transfer tube 1, such as Figure 1 , Figure 2 As shown, a screwing handle 5 is also provided on the outer wall of the end of the transfer cylinder 1 away from the nut sleeve 2. The screwing handle 5 is provided to increase the screwing torque of the rotating transfer cylinder 1, so that the transfer cylinder 1 can drive the nut sleeve 2 to screw the nut 7 into or out of the screw of the bolt 8. The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0029] Embodiment 3:

[0030] Based on the above embodiment, this embodiment further defines the structure of the guide rod 3, such as Figure 1 , Figure 2As shown, a flat head is provided at one end of the guide rod 3 away from the threaded column 4. Since the guide rod 3 needs to be used to drive the threaded column 4 to make a preliminary fixation with the nut 7, a flat head is particularly provided at one end of the guide rod 3 away from the threaded column 4, so as to facilitate the screwing of the guide rod 3 to drive the threaded column 4 to initially fix the nut 7. In addition, in order to avoid the guide rod 3 being obstructed when moving in the transfer tube 1, no additional rotation-assisting structure is provided on the guide rod 3, so it is preferred to use a flat head at the end of the guide rod 3 for convenient screwing. In addition, a mesh knurling that increases friction can also be provided at the end of the guide rod 3 away from the threaded column 4 to increase the screwing friction. The other parts of this embodiment are the same as the above-mentioned embodiment and will not be repeated.

[0031] Embodiment 4:

[0032] Based on the above embodiment, this embodiment further defines the connection method between the nut sleeve 2 and the transfer cylinder 1. Figure 2 As shown, one end of the nut sleeve 2 is provided with an external thread, and the end of the transfer tube 1 connected to the nut sleeve 2 is provided with an internal thread, and the nut sleeve 2 and the transfer tube 1 are threadedly connected. Since the nut 7 has different models and sizes, the nut sleeve 2 and the transfer tube 1 are detachably connected, which can facilitate the replacement of different nut sleeves 2 to match nuts 7 of different models and sizes. The nut sleeve 2 and the transfer tube 1 are connected by threaded connection, which does not affect the up and down movement of the guide rod 3 inside the transfer tube 1 and the nut sleeve 2. Other ways of detachably connecting the transfer tube 1 and the nut sleeve 2 without affecting the movement of the guide rod 3 can also be selected, such as clamping. In addition, although the nut sleeve 2 is threadedly connected to the transfer tube 1, the direction of the thread can be controlled to avoid affecting the transmission of torque of the nut sleeve 2 by the transfer tube 1. The other parts of this embodiment are the same as the above-mentioned embodiment and will not be repeated.

[0033] Embodiment 5:

[0034] Based on the above embodiment, this embodiment further defines the connection method between the guide rod 3 and the threaded column 4. Figure 2As shown, one end of the threaded column 4 is provided with an external thread, and one end of the guide rod 3 connected to the threaded column 4 is provided with an internal thread, and the threaded column 4 and the guide rod 3 are threadedly connected. Since the nut 7 has different models and sizes, the guide rod 3 and the threaded column 4 are detachably connected, and different threaded columns 4 can be easily replaced to match nuts 7 of different models and sizes. The guide rod 3 and the threaded column 4 are connected by threaded connection, which does not affect the up and down movement of the guide rod 3 inside the transfer tube 1 and the nut sleeve 2. Other ways of detachably connecting the guide rod 3 and the threaded column 4 without affecting the movement of the guide rod 3 can also be selected, such as clamping, magnet adsorption, etc. In addition, although the guide rod 3 is threadedly connected to the threaded column 4, the direction of the thread can be controlled to avoid affecting the transmission of torque between the guide rod 3 and the threaded column 4. The other parts of this embodiment are the same as the above-mentioned embodiment and will not be repeated.

[0035] Embodiment 6:

[0036] Based on the above embodiment, this embodiment further defines the structure of the guide rod 3, such as Figure 1 , Figure 2 As shown, the side wall of one end of the guide rod 3 extending out of the transfer tube 1 is also provided with a hook 6 for taking out the baffle. The hook 6 is provided mainly to hook the removed baffle out of the wind zone of the generator. The hook 6 has a small structure and will not affect the process of the guide rod 3 moving up and down inside the transfer tube 1 and the nut sleeve 2. The other parts of this embodiment are the same as the above embodiment and will not be repeated.

[0037] It can be understood that the tool structure for quick disassembly or installation of the wind zone baffle of the generator according to an embodiment of the utility model, such as the working principle and working process of components such as the nut sleeve 2 and the threaded column 4 are all prior arts and are well known to technicians in this field, and will not be described in detail here.

[0038] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A tool for quick removal or installation of a wind zone baffle of a generator, characterized in that: The invention comprises a transmission cylinder (1), one end of which is connected to a nut sleeve (2), a guide rod (3) is inserted into the interior of the transmission rod, and the guide rod (3) is capable of moving up and down in the transmission cylinder (1), so that one end of the guide rod (3) can extend out of the transmission cylinder (1) and the other end can also extend out of the nut sleeve (2), and one end of the guide rod (3) extending out of the nut sleeve (2) is connected to a threaded column (4), and the external thread on the threaded column (4) matches the internal thread of a nut (7) screwed on the nut sleeve (2).

2. A tool for rapid disassembly or installation of a wind zone baffle of a generator according to claim 1, characterized in that: A screwing handle (5) is also provided on the outer wall of the end of the transfer cylinder (1) away from the nut sleeve (2).

3. A tool for rapid disassembly or installation of a wind zone baffle of a generator according to claim 1 or 2, characterized in that: A flat head is provided at one end of the guide rod (3) away from the threaded column (4).

4. A tool for rapid disassembly or installation of a wind zone baffle of a generator according to claim 1 or 2, characterized in that: One end of the nut sleeve (2) is provided with an external thread, and the end of the transfer cylinder (1) connected to the nut sleeve (2) is provided with an internal thread, and the nut sleeve (2) and the transfer cylinder (1) are threadedly connected.

5. A tool for rapid disassembly or installation of a wind zone baffle of a generator according to claim 1 or 2, characterized in that: One end of the threaded column (4) is provided with an external thread, and one end of the guide rod (3) connected to the threaded column (4) is provided with an internal thread, and the threaded column (4) and the guide rod (3) are threadedly connected.

6. A tool for rapid disassembly or installation of a wind zone baffle of a generator according to claim 1 or 2, characterized in that: A hook (6) for removing the baffle is also provided on the side wall of one end of the guide rod (3) extending out of the transfer cylinder (1).

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