Start-stop mechanism of synchronous motor excitation system

Abstract

The utility model relates to the technical field of switch structures, in particular to a start-stop mechanism of a synchronous motor excitation system. According to the technical scheme, the device comprises a base, a cylinder body, a rotating block and a pull rod, a horizontal connector is arranged on the base, the cylinder body is fixed to the base, a vertical connector is arranged on the cylinder body, the rotating block is rotationally arranged in the cylinder body, and a movable contact block is installed on the rotating block. According to the utility model, two actions of pulling and rotating are matched, so that the phenomenon of misoperation of the start-stop mechanism by personnel can be avoided, and the operation safety of the start-stop mechanism is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of switch structures, in particular to a start-stop mechanism of a synchronous motor excitation system. Background Art

[0002] The power supply that supplies the excitation current to the synchronous generator and its ancillary equipment are collectively called the excitation system.

[0003] It generally consists of two main parts: the excitation power unit and the excitation regulator.

[0004] The excitation power unit provides excitation current to the synchronous generator rotor; and the excitation regulator controls the output of the excitation power unit according to the input signal and the given regulation criteria.

[0005] The automatic excitation regulator of the excitation system plays a significant role in improving the stability of parallel units in the power system.

[0006] In practical use, the start-stop mechanism of the existing synchronous motor excitation system is mostly operated by means of knobs or buttons, which are very easy to be touched or operated by mistake, resulting in improper start-stop actions.

[0007] To this end, we propose a start-stop mechanism for the synchronous motor excitation system to solve the existing problems. Utility Model Content

[0008] The utility model aims to solve the problems existing in the background technology and proposes a start-stop mechanism for a synchronous motor excitation system.

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a start-stop mechanism of a synchronous motor excitation system, comprising a base, a cylinder, a rotating block and a pull rod, the base is provided with a horizontal joint, the cylinder is fixed on the base, the cylinder is provided with a vertical joint, a rotating block is rotatably provided in the cylinder, and a movable contact block is installed on the rotating block.

[0010] Preferably, one end of the horizontal joint is rotatably connected to the end surface of the rotating block, and the end surface of the horizontal joint is in rotational contact with the movable contact block;

[0011] An extension piece is provided at one end of the vertical joint located inside the cylinder, and the position of the movable contact block corresponds to the position of the extension piece.

[0012] Preferably, a slide groove is provided in the rotating block, a slider is slidably installed in the slide groove, and a pull rod is welded on the slider;

[0013] A spring is movably sleeved on the pull rod, and the original length of the spring is greater than the length of the slide slot.

[0014] Preferably, the cylinder is provided with a socket adapted to the pull rod, and the pull rod is movably plugged into the socket;

[0015] One end of the pull rod protruding from the outer surface of the cylinder is fixed with a movable cap by a bolt;

[0016] The outer wall of the cylinder is welded with various limit blocks at equal distances;

[0017] The inner wall of the movable cap is provided with limiting grooves matched with the limiting blocks at equal intervals, and the limiting blocks are slidably inserted in the limiting grooves.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] During use, the start-stop mechanism of the synchronous motor excitation system of the utility model can be fixed at a designated position through a base, and connected to the circuit of the synchronous motor excitation system through a horizontal joint and a vertical joint;

[0020] When it is necessary to activate, the movable cap can be pulled outward, and the movable cap pulls the slider to slide in the rotating block through the pull rod. At this time, the spring is compressed and deformed. When the movable cap is separated from the limit block, the movable cap can be rotated, so that the movable cap drives the rotating block to rotate, and the movable contact block contacts the vertical joint. At this time, the horizontal joint and the vertical joint are connected to each other through the movable contact block, indicating that the line is in the connected state;

[0021] At this time, release the movable cap, and under the elastic force of the spring, the movable cap automatically resets, and the limit block limits the movable cap from spinning without external force;

[0022] When the machine needs to be stopped, just reverse the movable cap to make the movable contact block away from the vertical joint;

[0023] The utility model can prevent the phenomenon of personnel operating the start-stop mechanism by mistake through the coordination of the pulling and rotating actions, thus greatly improving the operational safety of the start-stop mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0025] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0026] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0027] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the utility model.

[0028] Reference numerals:

[0029] 1. Horizontal joint; 2. Base; 3. Vertical joint; 4. Movable cap; 5. Cylinder; 6. Movable contact block; 7. Rotating block; 8. Slider; 9. Spring; 10. Limit block; 11. Pull rod. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Embodiment 1

[0032] like Figure 1-Figure 4 As shown, the utility model proposes a start-stop mechanism of a synchronous motor excitation system, comprising a base 2, a cylinder 5, a rotating block 7 and a pull rod 11, a horizontal joint 1 is provided on the base 2, the cylinder 5 is fixed on the base 2, a vertical joint 3 is provided on the cylinder 5, a rotating block 7 is rotatably provided in the cylinder 5, and a movable contact block 6 is installed on the rotating block 7.

[0033] Based on Example 1:

[0034] During use, the start-stop mechanism of the synchronous motor excitation system of the utility model can be fixed at a specified position through the base 2, and connected to the circuit of the synchronous motor excitation system through the horizontal joint 1 and the vertical joint 3;

[0035] When it is necessary to activate, the movable cap 4 can be pulled outward, and the movable cap 4 pulls the slider 8 to slide in the rotating block 7 through the pull rod 11. At this time, the spring 9 is compressed and deformed. When the movable cap 4 is separated from the limit block 10, the movable cap 4 can be rotated, so that the movable cap 4 drives the rotating block 7 to rotate, so that the movable contact block 6 contacts the vertical joint 3. At this time, the horizontal joint 1 and the vertical joint 3 are connected to each other through the movable contact block 6, indicating that the line is in the connected state;

[0036] At this time, the movable cap 4 is released, and under the elastic force of the spring 9, the movable cap 4 automatically resets, and the limit block 10 limits the movable cap 4 from spinning without external force.

[0037] When the machine needs to be stopped, the movable cap 4 is reversed to make the movable contact block 6 away from the vertical joint 3 .

[0038] Embodiment 2

[0039] like Figure 1-Figure 4As shown, the start-stop mechanism of the synchronous motor excitation system proposed by the utility model, compared with the first embodiment, this embodiment further includes: one end of the horizontal joint 1 is rotatably connected to the end surface of the rotating block 7, and the end surface of the horizontal joint 1 is in rotational contact with the movable contact block 6;

[0040] An extension piece is provided at one end of the vertical joint 3 located inside the cylinder 5, and the position of the movable contact block 6 corresponds to the position of the extension piece.

[0041] The horizontal joint 1 and the vertical joint 3 are interconnected through the movable contact block 6, indicating that the circuit is in a connected state.

[0042] A slide groove is provided in the rotating block 7, a slider 8 is slidably installed in the slide groove, and a pull rod 11 is welded on the slider 8;

[0043] A spring 9 is movably sleeved on the pull rod 11, and the original length of the spring 9 is greater than the length of the slide slot. A socket adapted to the pull rod 11 is provided on the cylinder 5, and the pull rod 11 is movably plugged into the socket;

[0044] One end of the pull rod 11 protruding from the outer surface of the cylinder 5 is fixed with a movable cap 4 by means of bolts;

[0045] The outer wall of the cylinder 5 is welded with various limit blocks 10 at equal intervals;

[0046] The inner wall of the movable cap 4 is provided with limit grooves matched with the limit blocks 10 at equal intervals, and the limit blocks 10 are slidably inserted in the limit grooves.

[0047] When the movable cap 4 is released, the movable cap 4 automatically returns to its original position under the elastic force of the spring 9, and the limit block 10 limits the movable cap 4 from spinning without the action of external force.

[0048] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

[0049] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A start-stop mechanism of a synchronous motor excitation system, comprising a base (2), a cylinder (5), a rotating block (7) and a pull rod (11), characterized in that: The base (2) is provided with a horizontal joint (1), the cylinder (5) is fixed on the base (2), the cylinder (5) is provided with a vertical joint (3), a rotating block (7) is rotatably arranged inside the cylinder (5), and a movable contact block (6) is installed on the rotating block (7).

2. The start-stop mechanism of a synchronous motor excitation system according to claim 1, characterized in that: One end of the horizontal joint (1) is rotatably connected to the end surface of the rotating block (7), and the end surface of the horizontal joint (1) is in rotatable contact with the movable contact block (6); An extension piece is provided at one end of the vertical joint (3) located inside the cylinder (5), and the position of the movable contact block (6) corresponds to the position of the extension piece.

3. The start-stop mechanism of a synchronous motor excitation system according to claim 1, characterized in that: The rotating block (7) is provided with a slide groove, a slider (8) is slidably installed in the slide groove, and a pull rod (11) is welded to the slider (8); A spring (9) is movably sleeved on the pull rod (11), and the original length of the spring (9) is greater than the length of the slide groove.

4. The start-stop mechanism of a synchronous motor excitation system according to claim 1, characterized in that: The cylinder (5) is provided with a socket adapted to the pull rod (11), and the pull rod (11) is movably plugged into the socket; One end of the pull rod (11) protruding from the outer surface of the cylinder (5) is fixed with a movable cap (4) via bolts; The outer wall of the cylinder (5) is welded with various limit blocks (10) at equal intervals; The inner wall of the movable cap (4) is provided with limit grooves matched with the limit blocks (10) at equal intervals, and the limit blocks (10) are slidably inserted in the limit grooves.

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