A convenient maintenance generator overhauling auxiliary device
The automatic engagement of the generator maintenance auxiliary device with its elastic claws into the annular slot solves the problems of cumbersome operations and loose threaded connections during generator maintenance, enabling fast and reliable installation and removal of testing components, thus improving maintenance efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAOXING LONGBEN MACHINERY EQUIPMENT CO LTD
- Filing Date
- 2025-09-01
- Publication Date
- 2026-06-19
AI Technical Summary
In confined or inconveniently located generator maintenance spaces, operators must hold the testing components firmly with one hand and use a wrench or screwdriver with the other to tighten or loosen them. This process is cumbersome, time-consuming, and affects maintenance efficiency. Furthermore, threaded connections are prone to loosening under vibration, leading to poor contact or component detachment, which affects testing accuracy and poses safety hazards.
The generator maintenance auxiliary device adopts convenient maintenance. It utilizes the design of the elastic claw of the detection element mounting rod to automatically engage with the annular groove. The inclined surface guides the claw to automatically open and spring back to lock during the insertion process, realizing "one-plug lock". It can be quickly installed and disassembled without tools. The mechanical interlocking provides reliable axial limit, resists vibration and impact, and prevents falling off.
It greatly improves the efficiency of generator maintenance installation and disassembly, ensures stable signal transmission and operational safety, simplifies spare parts management, and enhances the versatility and safety of the device, making it particularly suitable for frequent maintenance scenarios.
Smart Images
Figure CN224382515U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of generator maintenance auxiliary devices, specifically a generator maintenance auxiliary device that is easy to maintain. Background Technology
[0002] In the routine inspection and maintenance of generators, various testing auxiliary devices are often used to monitor the condition of internal components. These devices typically consist of a main unit and replaceable testing probes or sensor modules, which need to be reliably connected to ensure stable signal transmission and easy and quick replacement to adapt to different testing needs.
[0003] Existing connection methods mostly employ threaded engagement or bolt fastening. In confined or inconveniently located generator maintenance spaces, operators must hold the testing component firmly with one hand while using a wrench or screwdriver with the other to tighten or loosen it. This process is cumbersome, time-consuming, and severely impacts maintenance efficiency. While these mechanical connections provide a certain level of strength, the continuous vibrations generated during generator operation can cause threaded connections to loosen, leading to poor contact or component detachment. This affects testing accuracy and poses safety hazards. Therefore, we propose a generator maintenance auxiliary device that is easy to maintain. Utility Model Content
[0004] The purpose of this utility model is to provide a convenient generator maintenance auxiliary device to solve the problem mentioned in the background art that in actual operation, in a small or inconvenient generator maintenance space, the operator needs to hold the detection element firmly with one hand and use a wrench or screwdriver with the other hand to tighten or disassemble it. The operation steps are cumbersome and time-consuming, which seriously affects the maintenance efficiency.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a generator maintenance auxiliary device for convenient maintenance, comprising an auxiliary device body and a detection element mounting rod. A slot is provided on the outer side of the detection element mounting rod. A fixing rod is fixedly installed at the bottom end of the auxiliary device body. A clamping assembly is provided at the bottom end of the fixing rod. The clamping assembly includes an elastic claw. A protrusion is fixedly installed on the outer side of the elastic claw. The free end of the elastic claw is inclined towards the center. In its natural state, the elastic claw forms a circular channel with a diameter smaller than that of the detection element mounting rod. When the detection element mounting rod is inserted into the circular channel, the clamping assembly controls the elastic claw to insert into the slot and lock the fixing rod.
[0006] The bottom end of the fixing rod has several grooves, and the fixing end of the elastic claw is fixed with a support rod.
[0007] One end of the support rod is rotatably mounted inside the groove via a bearing, and a collar is movably sleeved on the outer side of the fixing rod.
[0008] A return spring is fixedly installed at the top of the collar, and the return spring is sleeved on the outside of the fixed rod.
[0009] One end of the reset spring is fixedly installed at the bottom of the auxiliary device body.
[0010] The bottom end of the collar is in contact with the protrusion.
[0011] This utility model has at least the following beneficial effects:
[0012] 1. This utility model features a core design where, when the mounting rod of the detection element is inserted, the elastic claw automatically engages with its annular groove. Compared to traditional connection methods such as threads or bolts, this design utilizes a beveled surface during insertion to guide the claw, which automatically opens and springs back to lock. The operation only requires "alignment" and "pressing down," eliminating the need for tools and achieving "one-insert-lock." This greatly improves installation and disassembly efficiency and is particularly suitable for maintenance scenarios requiring frequent repairs. Once the connection is formed, the mechanical engagement of the claw and groove provides reliable axial restraint, effectively resisting vibration, impact, and tension, preventing the detection element from accidentally falling off, and ensuring stable signal transmission and operational safety.
[0013] 2. This structure features a self-locking characteristic; the greater the force applied during normal use, the tighter the lock becomes, providing excellent protection against accidental unlocking. The lock can only be released via a dedicated unlocking mechanism (pressing down the collar), avoiding the risk of accidental unlocking. Furthermore, this quick-release structure makes the detection element a standardized module; detection heads with different functions can be quickly replaced simply by matching a unified interface, improving the device's versatility and simplifying spare parts management. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the collar structure of this utility model;
[0016] Figure 3 This is an enlarged schematic diagram of the structure at point A of this utility model;
[0017] Figure 4 This is an enlarged schematic diagram of the structure at point B of this utility model.
[0018] In the diagram: 1. Auxiliary device body; 2. Detection element mounting rod; 3. Slot; 4. Fixing rod; 5. Clamping assembly; 501. Elastic claw; 502. Protrusion; 503. Circular channel; 504. Groove; 505. Support rod; 506. Collar; 507. Return spring. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1-4 This utility model provides a technical solution: a convenient generator maintenance auxiliary device, including an auxiliary device body 1 and a detection element mounting rod 2. An annular groove 3 is formed on the outer side wall of the detection element mounting rod 2 along its circumference. A vertical fixing rod 4 is fixedly installed at the bottom end of the auxiliary device body 1. A clamping assembly 5 for clamping and fixing the detection element mounting rod 2 is provided at the bottom end of the fixing rod 4. The clamping assembly 5 includes multiple symmetrically distributed elastic claws 501. A protrusion 502 is fixedly installed on the outer side wall of each elastic claw 501. The free end of the elastic claw 501 (i.e., the end facing the central axis of the fixing rod 4) is inclined towards the central axis, so that the multiple elastic claws... In its natural state, the free end of 501 forms a circular channel 503 with a diameter smaller than the outer diameter of the mounting rod 2 of the detection element. The bottom end of the fixed rod 4 has several grooves 504 along the circumference, corresponding to the number and position of the elastic claws 501. The fixed end of the elastic claw 501 is fixedly connected to a support rod 505. One end of the support rod 505 is rotatably set inside the corresponding groove 504 through a bearing (the specific structure is not shown in the figure, but it can be a miniature rolling bearing or a sliding bearing). This bearing connection structure allows the support rod 505 (together with the elastic claws 501 connected to it) to swing at a small angle with the bearing as the fulcrum, thereby realizing the radial opening and closing of the elastic claws 501.
[0021] A collar 506 is movably sleeved on the outer side of the fixed rod 4. The collar 506 can slide up and down along the axis of the fixed rod 4. The bottom end face of the collar 506 is in movable contact with the outer end face of the protrusions 502 on all the elastic claws 501. When the collar 506 moves downward, its bottom end will push all the protrusions 502 simultaneously, thereby forcing the elastic claws 501 to overcome their own elasticity and open outward. A return spring 507 is fixedly installed at the top of the collar 506. The return spring 507 is sleeved on the outer side of the fixed rod 4. One end of the return spring 507 is fixedly connected to the top of the collar 506, and the other end is fixedly connected to the bottom of the auxiliary device body 1. The return spring 507 is in a compressed or naturally extended state under normal conditions, and its elastic force is upward, which is used to push the collar 506 to the upper limit position.
[0022] In use, in the initial state, the return spring 507 is in a naturally extended or slightly compressed state. Its elastic force stably holds the collar 506 at its upper limit position outside the fixed rod 4. At this time, there is a small gap or only slight contact between the bottom end of the collar 506 and the protrusions 502 on each elastic claw 501, which is insufficient to overcome the inherent elasticity of the elastic claws 501. Therefore, under the action of their own elastic force, the free ends of the multiple elastic claws 501 are tightly close to the central axis, forming a circular channel 503 with the smallest diameter, ensuring the initial closed state of the locking mechanism. The entire clamping assembly 5 is in a ready-to-install state. When it is necessary to install the detection element, the operator... Holding the detection element mounting rod 2, precisely align its tip with the circular channel 503 of the clamping assembly 5, and apply downward pressure along the axial direction of the fixing rod 4. As the detection element mounting rod 2 moves downward, its outer wall first contacts the inner wall of the free end of the inclined elastic claw 501. Utilizing the guiding effect of the inclined surface, the axial pressure is decomposed into a radial component. This component overcomes the elastic deformation resistance of the elastic claw 501, forcing the elastic claw 501 to open outward as a whole. During this process, the fixed end of the elastic claw 501 rotates slightly on the bearing in the groove 504 through the support rod 505, providing a smooth rotation fulcrum for the opening of the claw, and the diameter of the circular channel 503 temporarily expands accordingly.
[0023] As the detection element mounting rod 2 continues to move downwards, its annular groove 3 gradually approaches the free end of the elastic claw 501. When the lower edge of the groove 3 moves to be flush with the bottom of the free end of the elastic claw 501, the radial compression force on the elastic claw 501 suddenly disappears, and the stored elastic potential energy is released instantaneously. Under the action of its own restoring force, the free end of the elastic claw 501 quickly rebounds towards the center and accurately falls into the internal space of the annular groove 3. The upper edge of the groove 3 forms an axial limit on the free end of the claw, thereby firmly locking the detection element mounting rod 2 below the auxiliary device body 1, achieving reliable connection. Then, the device can be used for generator maintenance. When it is necessary to disassemble the detection element, the operator presses the collar 506 down with his finger. The pressing force overcomes the upward elastic force of the return spring 507 and drives the collar 506 to move down along the axis of the fixed rod 4. The bottom end of the collar 506 pushes the protrusions 502 on all the elastic claws 501 at the same time. The thrust is transmitted to the elastic claws 501 through the protrusions 502, so that they open outward again around the bearing fulcrum of the support rod 505. Since the collar 506 contacts all the protrusions 502 at the same time, it ensures that multiple elastic claws 501 can open synchronously and equally.
[0024] As the elastic claw 501 opens synchronously, its free end, which was originally inserted into the slot 3, is forced out of the slot 3. When the free end is completely separated from the upper edge limit of the slot 3, the mechanical locking relationship between the detection element mounting rod 2 and the clamping assembly 5 is released. At this time, the detection element mounting rod 2 can be easily pulled upward to complete the physical separation. After the detection element mounting rod 2 is pulled out, the operator releases the pressure on the collar 506, and the return spring 507 releases its elastic potential energy. Its elastic force pushes the collar 506 back smoothly to its original position above the outside of the fixed rod 4. After the collar 506 is reset, it no longer applies a pushing force to the protrusion 502. The elastic claw 501 also completely retracts to its natural state under its own elastic force. The circular channel 503 returns to its minimum diameter, and the entire clamping assembly 5 returns to its initial installation state, ready for the next quick installation operation. This completes a complete cycle of installation-use-disassembly-reset.
[0025] Compared to traditional threaded connections, bolt fastening, or complex snap-fit methods, the process of inserting the detection element mounting rod 2 into the circular channel 503 involves its outer wall contacting the inclined inner wall of the free end of the elastic claw 501, creating a sloping guiding effect. This effect converts the axial pressure applied by the operator into a radial component force that overcomes the elasticity of the elastic claw 501, forcing the elastic claw 501 to open outwards. This allows the detection element mounting rod 2 to descend smoothly. When the detection element mounting rod 2 descends to the position of the slot 3 corresponding to the free end of the elastic claw 501, the radial compression on the elastic claw 501 disappears, and it quickly rebounds under its own elastic restoring force. Its free end then inserts and locks into the slot 3. The entire installation process requires only two simple actions: "alignment" and "pressing down," without the need for additional tools. This achieves "one-insert-and-lock" for the detection element, greatly shortening the installation time and significantly improving the maintenance efficiency during generator overhaul.
[0026] After the elastic claw 501 is inserted into the slot 3, the side wall of the slot 3, especially its upper edge, effectively limits the free end of the elastic claw 501 axially. This mechanical embedding and locking mechanism, consisting of the solid structure of the detection element mounting rod 2 and the elastic claw 501, can reliably withstand the vibration, impact, and a certain degree of axial tension generated during generator operation or maintenance. It effectively prevents the detection element mounting rod 2 from accidentally loosening or falling off, ensuring the stability of the detection signal transmission and the safety of the operation. Compared to methods relying solely on frictional clamping, this structure has significantly improved pull-out resistance. With stronger force and a more robust and reliable connection, this connection mechanism cleverly utilizes the inclined plane guidance principle. During insertion, the inclined plane formed by the outer wall of the detection element mounting rod 2 and the inclined inner wall of the free end of the elastic claw 501 efficiently converts the axial force applied by the operator into a radial component force that overcomes the elasticity of the claw. This makes the force required to open the claw relatively small, while the locking action is driven by the elastic potential energy of the elastic claw 501 itself and is completed instantly without the need to apply additional locking force. The entire installation process is smooth and labor-saving, reducing the labor intensity of the operator, and is especially suitable for maintenance scenarios that require frequent disassembly and assembly.
[0027] The mechanical fitting structure formed after the elastic claw 501 is inserted into the slot 3 has a self-locking characteristic. Under normal working conditions, if the detection element mounting rod 2 is subjected to an axial upward external force, this force will cause the free end of the elastic claw 501 to press more tightly against the upper edge of the slot 3, thereby enhancing the locking effect and providing good anti-disengagement performance. Only by using a dedicated unlocking mechanism—that is, the operator presses down on the collar 506, causing its bottom end to push the protrusion 502, thereby forcing the elastic claw 501 to open outward synchronously, can the free end of the claw disengage from the slot 3, thus unlocking the device. This design effectively avoids unplanned unlocking caused by accidental collisions or vibrations, ensuring operational safety. In addition, this connection method makes the detection element mounting rod 2 a highly modular independent component. Different detection function modules can be integrated on the standardized mounting rod 2. As long as its outer diameter and the size of the slot 3 match the clamping assembly 5, it can be quickly installed on the same auxiliary device body 1. This not only facilitates flexible switching between different detection tasks, but also simplifies the inventory management of spare parts and the production assembly process, improving the versatility of the device.
[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A generator maintenance auxiliary device that is easy to maintain, characterized in that: The device includes an auxiliary device body and a detection element mounting rod. The detection element mounting rod has a slot on its outer side. A fixing rod is fixedly installed at the bottom of the auxiliary device body. A clamping assembly is installed at the bottom of the fixing rod. The clamping assembly includes an elastic claw. A protrusion is fixedly installed on the outer side of the elastic claw. The free end of the elastic claw is inclined towards the center. In its natural state, the elastic claw forms a circular channel with a diameter smaller than that of the detection element mounting rod. When the mounting rod of the detection element is inserted into the circular channel, the clamping assembly controls the elastic claw to insert into the slot and lock the fixing rod.
2. The generator maintenance auxiliary device for convenient maintenance according to claim 1, characterized in that: The bottom end of the fixing rod is provided with several grooves, and the fixed end of the elastic claw is fixedly provided with a support rod.
3. The generator maintenance auxiliary device for convenient maintenance according to claim 2, characterized in that: One end of the support rod is rotatably mounted inside the groove via a bearing, and a collar is movably sleeved on the outer side of the fixing rod.
4. The generator maintenance auxiliary device for convenient maintenance according to claim 3, characterized in that: A return spring is fixedly installed at the top of the collar, and the return spring is sleeved on the outside of the fixed rod.
5. The generator maintenance auxiliary device for convenient maintenance according to claim 4, characterized in that: One end of the reset spring is fixedly mounted on the bottom end of the auxiliary device body.
6. The generator maintenance auxiliary device for convenient maintenance according to claim 5, characterized in that: The bottom end of the collar is in contact with the protrusion.