Feed switch with good use performance

Abstract

The utility model relates to a feed switch with good use performance, and relates to the technical field of feed switches, the feed switch comprises a shell and a shell cover arranged on the shell, and the shell is internally provided with an emergency stop button and an isolation switch; the disconnecting switch is provided with an operating rod penetrating through the shell. The scram button comprises a reset piece, a pressing rod penetrating through the shell and a check ring fixedly arranged on the periphery of the inner end of the pressing rod. A fan-shaped limiting plate located above the check ring is fixedly arranged on the periphery of the operating rod, and a locking notch allowing a part of the periphery of the check ring to be inserted therein is formed in the periphery of the fan-shaped limiting plate. A limiting block is arranged on the side face of the shell, a first limiting through hole allowing the operating rod to penetrate through and a second limiting through hole allowing the pressing rod to penetrate through are formed in the limiting block, and a limiting notch allowing the limiting block to penetrate through and be fixed is formed in the side wall of the shell; due to the installation of the limiting blocks, the situation that the shaft distance does not meet the requirement due to machining process deviation is greatly reduced.

Description

Technical Field

[0001] The present application relates to the technical field of feeder switches, and in particular to a feeder switch with good performance. Background Art

[0002] The feeder switch is a complete set of switchgear used in coal mines to connect and disconnect the normal current of the carrying line. It can connect and disconnect the abnormal current within a certain period of time under specified abnormal circuit conditions (such as short circuit), and has a clear break in the primary circuit. The application scenarios of the feeder switch are very wide. When the power grid fails or the power load is too large, the feeder switch can quickly cut off the circuit to prevent damage to the power equipment or expansion of the power system fault.

[0003] In the related art, a feed switch includes a shell and a shell base, wherein an isolating switch and an emergency stop button are arranged inside the shell. A pressing block is fixedly arranged at the inner end of the emergency stop button, and an operating rod is arranged on one side of the isolating switch, wherein the end of the operating rod passes through the shell and extends to the outside, and the isolating switch can be controlled by rotating the operating rod; a limiting plate is fixedly arranged on the outer periphery of the inner part of the operating rod, and a plurality of limiting notches for the pressing block to be placed are evenly arranged on the outer periphery of the limiting plate; a first sleeve for the operating rod to pass through and a second sleeve for the emergency stop button to pass through are welded and fixed on the side wall of the shell.

[0004] In actual operation, the limit plate will be unlocked only when the worker presses the emergency stop button to make the pressing block come out of the limit notch. This design ensures that the emergency stop operation must be performed before the disconnector is controlled, thereby improving the safety of the feeder switch.

[0005] However, in the actual production process, due to the deviation of the processing technology and the accuracy of welding, the axis distance between the first sleeve and the second sleeve may be difficult to control accurately during installation. If the distance between the two is too large, then under normal circumstances, the pressing block on the emergency stop button may not be able to effectively limit the limit plate, which may cause the disconnector to be operated unexpectedly, thereby posing a potential safety hazard. Utility Model Content

[0006] The purpose of this application is to provide a feeder switch with good performance, so as to solve the problem that due to the deviation of the processing technology and the accuracy of welding in the above-mentioned related technology, the isolating switch may be turned without pressing the emergency stop button, which may pose a safety hazard.

[0007] The present application provides a feed switch with good performance, which adopts the following technical solution:

[0008] A feeder switch with good performance in use comprises a shell and a shell cover arranged on the shell, wherein an emergency stop button and an isolating switch are arranged inside the shell; an operating rod penetrating the shell is arranged on the isolating switch, and the emergency stop button comprises a reset member, a pressing rod penetrating the shell and a retaining ring fixed on the outer periphery of the inner end portion of the pressing rod; a fan-shaped limit plate located above the retaining ring is fixed on the outer periphery of the operating rod, and a locking notch is provided on the outer periphery of the fan-shaped limit plate for inserting a part of the outer periphery of the retaining ring; a limit block is provided on the side surface of the shell, and a first limit through hole for the operating rod to penetrate and a second limit through hole for the pressing rod to penetrate are provided on the limit block, and a limit notch for the limit block to penetrate and be fixed is provided on the side wall of the shell.

[0009] By adopting the above technical scheme, due to the installation setting of the limit block, and the first limit through hole and the second limit through hole are integrated on the limit block, since the size of the limit block is small, it is convenient to perform hole opening processing on the limit block, which greatly reduces the situation where the axis spacing does not meet the requirements due to processing deviation; at the same time, the limit block is fixed on the inner wall of the upper limit notch of the shell, so even if there is a deviation in the fixation between the fan-shaped limit plate and the shell, it does not affect the axial distance between the pressing rod and the operating rod, thereby ensuring the locking limit of the operating rod when the emergency stop button is not pressed, thereby improving the safety performance of the feed switch.

[0010] Optionally, the side of the limit block is provided with a first limit sleeve sleeved on the outer circumference of the operating rod and a second limit sleeve sleeved on the outer circumference of the pressing rod, the first limit sleeve is arranged inside the first limit through hole, and the second limit sleeve is arranged inside the second limit through hole.

[0011] By adopting the above technical solution, due to the installation arrangement of the first limiting sleeve and the second limiting sleeve, the first limiting sleeve and the second limiting sleeve are used to protect the periphery of the operating rod and the pressing rod respectively, thereby increasing the service life of the operating rod and the pressing rod.

[0012] Optionally, a recessed groove is provided on the side of the limit block facing the interior of the shell.

[0013] By adopting the above technical solution, due to the opening of the recessed groove, the raw materials consumed in the molding of the limit block are reduced, thereby reducing the production cost of the limit block.

[0014] Optionally, the inner corners of the adjacent side walls of the clearance trough are rounded.

[0015] By adopting the above technical solution, the rounded corner design can effectively reduce the stress concentration phenomenon generated when the limit block is subjected to external force, and can disperse these stresses, thereby enhancing the strength and durability of the limit block.

[0016] Optionally, an operating handle is fixedly provided on the outer periphery of the outer end portion of the operating rod.

[0017] By adopting the above technical solution, due to the installation of the operating handle on the outer end of the operating rod, the user can drive the rotation of the operating rod by rotating the operating handle, thereby improving the performance of controlling the isolating switch.

[0018] Optionally, an arc-shaped identification plate is provided on the outer surface of the shell above the operating rod.

[0019] By adopting the above technical solution, due to the setting of the arc-shaped identification plate, when the operating handle is rotated and thus drives the operating rod to rotate, it is convenient for the staff to more intuitively judge the rotation angle of the operating handle and the state of the isolating switch based on the rotation angle of the operating handle relative to the arc-shaped identification plate.

[0020] Optionally, a protrusion is fixedly provided on the side surface of the limiting block located outside the shell, and a limiting groove which is connected with the second limiting through hole and for the outer end of the pressing rod to be placed is formed on the protrusion.

[0021] By adopting the above technical solution, due to the installation setting of the protrusion, the outer end of the pressing rod is located inside the limiting groove after installation. With this setting, the outer end of the pressing rod is protected, reducing the possibility of the outer end of the pressing rod being damaged by external force.

[0022] Optionally, the reset member is a compression spring which is sleeved on the outer circumference of the pressing rod and is in a compressed state. A limiting ring located inside the limiting groove is fixed on the outer circumference of the end of the pressing rod away from the retaining ring. The two ends of the compression spring are respectively abutted against the side of the limiting ring and the side wall of the limiting groove.

[0023] By adopting the above technical scheme, due to the installation setting of the limit ring, the installation and fixation of the compression spring is facilitated, and after the installation is completed, the compression spring is placed inside the limit groove, thereby also realizing the protection of the compression spring, reducing the influence of external dust or water vapor on the compression spring, and extending the service life of the compression spring.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. Due to the installation of the limit block, the situation where the axis spacing does not meet the requirements due to processing deviation is greatly reduced. The limit block is fixed on the inner wall of the upper limit notch of the shell, so even if there is a deviation in the fixation between the fan-shaped limit plate and the shell, it will not affect the axis spacing between the pressing rod and the operating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0028] Figure 2 It is a cross-sectional structural diagram of the installation and coordination of the isolating switch in the embodiment of the present application;

[0029] Figure 3 It is a schematic diagram of the exploded structure of the installation distribution of the emergency stop button and the limit block in the embodiment of the present application;

[0030] Figure 4 It is a partial cross-sectional structural schematic diagram of the installation and coordination of the emergency stop button and the limit block in the embodiment of the present application;

[0031] Figure 5 It is a partial structural schematic diagram of the installation and cooperation between the sector-shaped limiting plate and the retaining ring in the embodiment of the present application;

[0032] Figure 6 It is a partial structural schematic diagram of the installation and coordination of the arc-shaped identification plate in the embodiment of the present application;

[0033] Figure 7 It is a structural schematic diagram of the distribution of the yielding grooves on the limit block in an embodiment of the present application.

[0034] In the figure, 1, shell; 11, limit notch; 12, arc-shaped identification plate; 2, shell cover; 3, emergency stop button; 31, pressing rod; 311, limit ring; 32, reset member; 321, compression spring; 33, retaining ring; 4, isolating switch; 41, operating rod; 42, fan-shaped limit plate; 421, locking notch; 43, operating handle; 5, limit block; 51, first limit through hole; 52, second limit through hole; 53, protrusion; 531, limit groove; 54, yield groove; 6, first limit sleeve; 7, second limit sleeve. DETAILED DESCRIPTION

[0035] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0036] Example:

[0037] Reference Figure 1 and Figure 2A feeder switch with good performance includes a shell 1 and a shell cover 2 arranged on the shell 1, an emergency stop button 3, an isolating switch 4 and other electrical components (not shown in the figure) are installed in the shell 1; the isolating switch 4 is a conventional switch and will not be described in detail here.

[0038] Reference Figure 3 , Figure 4 and Figure 5 The emergency stop button 3 includes a reset member 32, a pressing rod 31 penetrating the housing 1, and a retaining ring 33 fixed on the outer periphery of the inner end of the pressing rod 31 by a pin; a fan-shaped limiting plate 42 located above the retaining ring 33 is welded and fixed on the outer periphery of the operating rod 41, and three locking notches 421 for inserting a part of the outer periphery of the retaining ring 33 are evenly opened on the outer periphery of the fan-shaped limiting plate 42;

[0039] A limit block 5 is provided on the side of the shell 1, wherein the limit block 5 is provided with a first limit through hole 51 for the operating rod 41 to pass through and a second limit through hole 52 for the pressing rod 31 to pass through, the length directions of the first limit through hole 51 and the second limit through hole 52 are parallel, and the two are distributed up and down; a limit notch 11 is provided on the side wall of the shell 1 for the limit block 5 to pass through and is welded and fixed.

[0040] Reference Figure 3 and Figure 4 The side of the limit block 5 is provided with a first limit sleeve 6 sleeved on the outer periphery of the operating rod 41 and a second limit sleeve 7 sleeved on the outer periphery of the pressing rod 31. The first limit sleeve 6 is arranged inside the first limit through hole 51, and the second limit sleeve 7 is arranged inside the second limit through hole 52; thereby, the outer periphery of the operating rod 41 and the pressing rod 31 are protected.

[0041] Reference Figure 4 and Figure 6 The stop block 5 is formed with a protruding portion 53 on the side surface outside the housing 1, and a stop groove 531 is formed on the protruding portion 53, which is connected to the second stop hole 52 and for the outer end of the pressing rod 31 to be placed. The axis of the stop groove 531 coincides with the axis of the second stop hole 52. The reset member 32 is a compression spring 321 sleeved on the outer periphery of the pressing rod 31 and in a compressed state. A stop ring 311 located inside the stop groove 531 is formed on the outer periphery of the end of the pressing rod 31 away from the retaining ring 33. The two ends of the compression spring 321 are respectively in contact with the side of the stop ring 311 and the side wall of the stop groove 531.

[0042] Reference Figure 6 and Figure 7A recessed groove 54 is provided on the side of the limit block 5 facing the inside of the shell 1, and the inner corner of the adjacent side wall of the recessed groove 54 is a rounded corner. This arrangement not only saves the processing cost of the limit block 5, but also the rounded corner design can effectively reduce the stress concentration phenomenon generated when the limit block 5 is subjected to external force, and can disperse these stresses, thereby enhancing the strength and durability of the limit block 5.

[0043] Reference Figure 6 An operating handle 43 is fixedly installed on the outer periphery of the outer end of the operating rod 41 by a pin. The user can drive the rotation of the operating rod 41 by rotating the operating handle 43, thereby improving its performance; an arc-shaped identification plate 12 is fixed on the outer surface of the shell 1 above the operating rod 41 by screws, and corresponding scales are evenly arranged on the outer surface of the arc-shaped identification plate 12, which is convenient for the staff to more intuitively judge the rotation angle of the operating handle 43.

[0044] The implementation principle of the embodiment of the present application is:

[0045] During the installation of the pressing rod 31 and the operating rod 41, the first limiting through hole 51 and the second limiting through hole 52 are integrated on the limiting block 5. Since the limiting block 5 is small in size, it is convenient to perform hole processing on the limiting block 5, which greatly reduces the occurrence of the situation where the axis spacing does not meet the requirements due to the deviation of the processing technology. The limiting block 5 is welded and fixed on the inner wall of the upper limit notch 11 of the housing 1. Even if there is a deviation in the welding between the fan-shaped limiting plate 42 and the housing 1, it does not affect the axis spacing between the pressing rod 31 and the operating rod 41.

[0046] Unless otherwise defined, the terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limit, but indicate that there is at least one. "Including" or "comprising" and other similar words mean that the elements or objects appearing in front of "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0047] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A feeder switch with good performance, comprising a housing (1) and a housing cover (2) arranged on the housing (1), wherein an emergency stop button (3) and an isolating switch (4) are arranged inside the housing (1); an operating rod (41) penetrating the housing (1) is arranged on the isolating switch (4); the emergency stop button (3) comprises a reset member (32), a pressing rod (31) penetrating the housing (1), and a retaining ring (33) fixedly arranged on the outer periphery of the inner end of the pressing rod (31); a fan-shaped limiting plate (42) located above the retaining ring (33) is fixedly arranged on the outer periphery of the operating rod (41), and a locking notch (421) is provided on the outer periphery of the fan-shaped limiting plate (42) for inserting a part of the outer periphery of the retaining ring (33); It is characterized in that A limit block (5) is provided on the side of the shell (1), and a first limit through hole (51) for the operating rod (41) to pass through and a second limit through hole (52) for the pressing rod (31) to pass through are formed on the limit block (5), and a limit notch (11) for the limit block (5) to pass through and be fixed on the side wall of the shell (1).

2. A feed switch with good performance according to claim 1, characterized in that: The side surface of the limit block (5) is provided with a first limit sleeve (6) sleeved on the outer circumference of the operating rod (41) and a second limit sleeve (7) sleeved on the outer circumference of the pressing rod (31); the first limit sleeve (6) is arranged inside the first limit through hole (51), and the second limit sleeve (7) is arranged inside the second limit through hole (52).

3. A feed switch with good performance according to claim 1, characterized in that: The side surface of the limit block (5) facing the inside of the shell (1) is provided with a recessed groove (54).

4. A feed switch with good performance according to claim 3, characterized in that: The inner corners of the adjacent side walls of the clearance groove (54) are rounded.

5. A feed switch with good performance according to claim 1, characterized in that: An operating handle (43) is fixedly provided on the outer periphery of the outer end of the operating rod (41).

6. A feed switch with good performance according to claim 5, characterized in that: An arc-shaped identification plate (12) is arranged on the outer side surface of the housing (1) above the operating rod (41).

7. A feed switch with good performance according to claim 1, characterized in that: The limiting block (5) is provided with a protruding portion (53) on the side surface outside the shell (1), and the protruding portion (53) is provided with a limiting recessed groove (531) which is connected to the second limiting through hole (52) and is provided for the outer end of the pressing rod (31) to be placed.

8. A feed switch with good performance according to claim 7, characterized in that: The reset member (32) is a compression spring (321) which is sleeved on the outer periphery of the pressing rod (31) and is in a compressed state. A limiting ring (311) located inside the limiting groove (531) is fixedly provided on the outer periphery of the end of the pressing rod (31) away from the retaining ring (33). The two ends of the compression spring (321) are respectively in contact with the side surface of the limiting ring (311) and the side wall of the limiting groove (531).

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