A terminal for a temperature element lead of a generator

Abstract

The utility model relates to the technical field of generator, and disclose a kind of wiring terminal applied to generator temperature element lead-out wire, including fixed structure, the outer wall of fixed structure is connected with assembly structure, the inside of assembly structure top is clamped with fastening structure, the fixed structure includes fixed wallboard, the inside of fixed wallboard is installed with bolt, the top of bolt outer wall is equipped with wire slot, the assembly structure includes nut, by simplifying installation into two-step operation of "thread connection+clamping pressing".First, the basic assembly is completed by the thread rotation of nut and bolt, then press down the pressing cylinder after inserting the wire end into the placement hole, fastening can be realized;When disassembling, only need to press down the pressing ring, the clamping block can be separated from the snap ring without additional tool assistance.This design greatly shortens the installation time, significantly reduces the operation difficulty, even non-professionals can quickly get started, effectively improves the efficiency and convenience of wiring work.

Description

Technical Field

[0001] This utility model relates to the field of generator technology, specifically to a terminal block used for the lead wires of generator temperature elements. Background Technology

[0002] In current technologies, the terminals of generator temperature element leads are typically used because generators, as core equipment in power systems, generate heat due to electromagnetic losses in their windings and cores during operation. Excessive temperature can lead to insulation aging, short circuits, or even shutdowns. Therefore, real-time temperature monitoring and signal transmission via temperature elements (such as PT100 RTDs and thermocouples) is crucial for ensuring safe generator operation. The terminals of these temperature element leads act as a "bridge" for signal transmission, and their reliability directly impacts the accuracy of monitoring data and equipment stability. However, these terminals often use bolt crimping, requiring destructive modifications such as welding or slotting of the bolts, or relying on repeated tightening of multiple nuts to secure the wire ends. For example, wiring a certain type of generator temperature element requires milling a 1.5mm deep groove in the bolt head before tightening the wire end with double nuts. A single wiring attempt takes over 20 minutes, demands high operator skill, and is inefficient for batch installations.

[0003] However, existing technologies still have shortcomings, such as the following:

[0004] Existing generator temperature element lead wire terminals have two major drawbacks: First, installation requires complex modifications to the bolts and repeated tightening of the nuts, resulting in cumbersome operations and low installation efficiency. Second, in the high-frequency vibration environment of the generator, the wire terminals are prone to loosening, causing poor contact and resulting in insufficient connection stability and poor reliability. These problems not only increase the time and labor costs of installation and maintenance, but may also affect the normal operation of the equipment due to abnormal signal transmission. Utility Model Content

[0005] The purpose of this utility model is to provide a terminal block for the lead wire of the generator temperature element, so as to solve the problem of cumbersome operation and low installation efficiency mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] Preferably, the device includes a fixing structure, the outer wall of which is threadedly connected to an assembly structure, and the inner side of the top of the assembly structure is snapped with a fastening structure. The fixing structure includes a fixing wall panel, the inner side of which is fitted with a bolt, and the top of the outer wall of the bolt is provided with a groove.

[0008] The assembly structure includes a nut, and a retaining ring is mounted on the top of the nut.

[0009] Preferably, the fastening structure includes a pressure cylinder, the top of which has a shrinkage groove, and a pressure ring is slidably connected to the inner side of the shrinkage groove.

[0010] Preferably, the top of the pressure ring has a placement hole, and connecting rods are installed on both sides of the bottom of the pressure ring. A return spring is movably sleeved on the bottom of the outer wall of the connecting rod and on the lower surface of the pressure ring.

[0011] Preferably, the inner cavity of the pressure cylinder is provided with a shrinkage groove, and a limit plate is installed on the outer wall of the inner side of the shrinkage groove.

[0012] Preferably, a limit block is installed on the outer wall of the inner side of the pressure cylinder, and an arc-shaped extrusion block is installed on the outer wall of one side of the limit block.

[0013] Preferably, a push frame is rotatably connected to one end of the bottom of the connecting rod, and a rotating rod is fixedly connected to the outer wall of the bottom of the push frame.

[0014] Preferably, a mounting plate is fixedly connected to the outer wall of the rotating rod, and a locking block is installed on the outer wall at the bottom of the mounting plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The installation process is simplified to a two-step operation: threaded connection + snap-fit. First, the basic assembly is completed by rotating the threads of the nut and bolt. Then, the wire end is inserted into the placement hole, and the pressing cylinder is pressed down for quick tightening. Disassembly is simple: just press the pressing ring, and the locking block will disengage without the need for additional tools. This design significantly reduces installation time and operational difficulty, allowing even non-professionals to quickly get started, effectively improving the efficiency and convenience of wiring work.

[0017] 2. The pressing-type fastening mechanism, which combines the lower pressure cylinder and the lower pressure ring, ensures that the arc-shaped extrusion block applies uniform and stable pressure to the wire end. Simultaneously, the multiple limiting structure consisting of the return spring, limiting plate, and limiting block effectively prevents wire end misalignment, ensuring a stable connection even under complex environments such as high-frequency generator vibration. Furthermore, its modular design supports adaptation to different wire diameters without requiring customized modifications, enhancing versatility while comprehensively guaranteeing the reliability and stability of the terminal connections. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0019] Figure 2 This is a cross-sectional perspective view of the three-dimensional structure of the pressure cylinder of this utility model;

[0020] Figure 3 This is an enlarged three-dimensional structural diagram of point A of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the assembly structure of this utility model.

[0022] In the diagram: 1. Fixed structure; 11. Fixed wall panel; 12. Bolt; 121. Cable trough; 2. Assembly structure; 21. Nut; 22. Snap ring; 3. Fastening structure; 31. Lower pressure cylinder; 311. Shrinkage groove; 312. Limiting plate; 32. Lower pressure ring; 321. Placement hole; 33. Limiting block; 331. Arc-shaped extrusion block; 34. Connecting rod; 341. Push frame; 342. Rotating rod; 343. Mounting plate; 344. Locking block; 35. Return spring. Detailed Implementation

[0023] 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.

[0024] Example 1: Please refer to Figures 1-4 The assembly structure 1 includes a fixing structure 1 with an assembly structure 2 connected to its outer wall by threads. The assembly structure 2 is installed on the outer wall of the bolt 12. A fastening structure 3 is snapped onto the inner side of the top of the assembly structure 2, thereby covering the outer wall of the bolt 12 and fastening the wire end. The fixing structure 1 includes a fixing wall plate 11. The bolt 12 is installed on the inner side of the fixing wall plate 11 and fixed to the outer wall of the fixing wall plate 11. A wire groove 121 is opened on the top of the outer wall of the bolt 12. The assembly structure 2 includes a nut 21, and a retaining ring 22 is installed on the top of the nut 21. The retaining ring 22 is installed on the top of the nut 21, thereby facilitating the snapping with the fastening structure 3 and reducing the need for modification of the bolt 12.

[0025] In this embodiment: when installing the wire end, it is necessary to first slot the original bolt 12 to create a wire groove 121, and then rotate the inner side of the nut 21 and the outer wall of the bolt 12 with threads to facilitate the continued installation of the fastening structure 3.

[0026] Example 2: This example is an improvement on Example 1. For details, please refer to [link / reference]. Figures 1-3The fastening structure 3 includes a pressure cylinder 31, and a shrinkage groove 311 is provided on the top of the pressure cylinder 31 to facilitate the installation of the pressure ring 32. The pressure ring 32 is slidably connected to the inner side of the shrinkage groove 311, so as to facilitate pressing the pressure ring 32. The top of the pressure ring 32 is provided with a placement hole 321, through which a wire end is inserted to facilitate the insertion of the wire end into the inner side of the wire groove 121. Connecting rods 34 are installed on both sides of the bottom of the pressure ring 32. When the pressure ring 32 is pressed, the connecting rods 34 slide down and slide inside the shrinkage groove 311. A return spring 35 is movably sleeved on the bottom of the outer wall of the connecting rod 34 and located on the lower surface of the pressure ring 32 to reset the pressure ring 32 after pressing. The shrinkage groove 311 is provided in the inner cavity of the pressure cylinder 31 to facilitate the sliding of the connecting rod 34 inside the shrinkage groove 311. The outer wall of the inner side of the shrinkage groove 311 is equipped with a The limiting plate 312 limits one side of the connecting rod 34. The outer wall of the inner side of the pressing cylinder 31 is equipped with a limiting block 33 for pushing the wire end and limiting the wire groove 121. An arc-shaped extrusion block 331 is installed on the outer wall of one side of the limiting block 33 for extruding the wire end. One end of the bottom of the connecting rod 34 is rotatably connected to the pushing frame 341, so that the downward pressing connecting rod 34 extrudes the pushing frame 341. The rotating rod 342 is fixedly connected to the outer wall of the bottom of the pushing frame 341, so that the two ends of the rotating rod 342 rotate inside the shrinkage groove 311. When the rotating rod 342 rotates, the mounting plate 343 is fixedly connected to the outer wall of the rotating rod 342, so that the mounting plate 343 rotates. Then, a locking block 344 is installed on the outer wall of the bottom of the mounting plate 343, so that the locking block 344 rotates and the locking slot of the locking block 344 disengages from the inner side of the locking ring 22.

[0027] In this embodiment: After the assembly structure 2 is installed, the lower wire end is inserted into the inner side of the placement hole 321, and then the wire end is placed into the inner side of the wire groove 121. The limiting block 33 is then aligned with the inner side of the wire groove 121, and then the lower pressure cylinder 31 is pressed, so that it locks the locking block 344 into the inner side of the retaining ring 22. When the arc-shaped extrusion block 331 is pressed, it squeezes the wire end, thereby fastening the wire end. When the lower pressure ring 32 is pressed, the bottom of the lower pressure ring 32 squeezes the connecting rod 34, so that one end of the bottom of the connecting rod 34 presses down on the push frame 341. When the push frame 341 is pressed down, it drives the rotating rod 342 to rotate on the outer wall of the shrink groove 311. Thus, the rotating rod 342 drives the locking block 344 to rotate, so that one side of the locking block 344 in the groove is disengaged from the inner side of the retaining ring 22, releasing the fastening structure 3 from the retaining ring 22.

[0028] The working principle of this utility model is as follows: When installing the wire end, it is necessary to first slot the existing bolt 12 to create a wire groove 121, and then rotate the inner side of the nut 21 with the outer wall of the bolt 12 to facilitate the continued installation of the fastening structure 3.

[0029] After assembling structure 2, insert the lower wire end into the inner side of the placement hole 321, then align it with the inner side of the wire groove 121 and place the wire end there. Align the limiting block 33 with the inner side of the wire groove 121, and then press down the pressing cylinder 31, so that it locks the locking block 344 inside the retaining ring 22. When the arc-shaped extrusion block 331 is pressed, it squeezes the wire end, thus securing the wire end. When the pressing ring 32 is pressed, the bottom of the pressing ring 32 squeezes the connecting rod 34, causing one end of the bottom of the connecting rod 34 to press down the push frame 341. When the push frame 341 is pressed down, it drives the rotating rod 342 to rotate on the outer wall of the shrink groove 311. This causes the locking block 344 to rotate, allowing one side of the locking block 344 to disengage from the inner side of the retaining ring 22, thus releasing the fastening structure 3 from locking the retaining ring 22.

[0030] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A terminal block for use with a lead wire of a generator temperature element, comprising a fixing structure (1), wherein the outer wall of the fixing structure (1) is threadedly connected to an assembly structure (2), and the inner side of the top of the assembly structure (2) is snapped with a fastening structure (3), characterized in that: The fixing structure (1) includes a fixing wall panel (11), and a bolt (12) is installed on the inner side of the fixing wall panel (11). A wire groove (121) is opened on the top of the outer wall of the bolt (12). The assembly structure (2) includes a nut (21) with a retaining ring (22) mounted on the top of the nut (21).

2. The terminal block for use with the lead wire of a generator temperature element according to claim 1, characterized in that: The fastening structure (3) includes a pressure cylinder (31), the top of which is provided with a shrinkage groove (311), and a pressure ring (32) is slidably connected to the inner side of the shrinkage groove (311).

3. A terminal block for use with the lead wire of a generator temperature element according to claim 2, characterized in that: The top of the pressure ring (32) is provided with a placement hole (321), and connecting rods (34) are installed on both sides of the bottom of the pressure ring (32). A return spring (35) is movably sleeved on the bottom of the outer wall of the connecting rod (34) and on the lower surface of the pressure ring (32).

4. A terminal block for use with the lead wire of a generator temperature element according to claim 2, characterized in that: The inner cavity of the pressure cylinder (31) is provided with a shrinkage groove (311), and a limit plate (312) is installed on the outer wall of the inner side of the shrinkage groove (311).

5. A terminal block for use with the lead wire of a generator temperature element according to claim 2, characterized in that: A limiting block (33) is installed on the outer wall of the inner side of the pressure cylinder (31), and an arc-shaped extrusion block (331) is installed on the outer wall of one side of the limiting block (33).

6. A terminal block for use with the lead wire of a generator temperature element according to claim 3, characterized in that: One end of the bottom of the connecting rod (34) is rotatably connected to the push frame (341), and the outer wall of the bottom of the push frame (341) is fixedly connected to the rotating rod (342).

7. A terminal block for use with the lead wire of a generator temperature element according to claim 6, characterized in that: The outer wall of the rotating rod (342) is fixedly connected to the mounting plate (343), and the bottom outer wall of the mounting plate (343) is fitted with a locking block (344).

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