Travel switch fixing device of thermal power plant slide plate gate control cylinder

Abstract

The travel switch fixing device comprises a cylinder, the output end of the cylinder is fixedly connected with a connecting plate, and the end, away from the cylinder, of the connecting plate is fixedly connected with a slide plate gate; a body plate is detachably arranged on one side of the air cylinder, a plurality of travel switches are arranged on the body plate, a fixing plate is arranged at the end, perpendicular to the output moving direction of the air cylinder, of the body plate, and a width adjusting groove is formed in the end, right opposite to the fixing plate, of the body plate and is perpendicular to the output moving direction of the air cylinder. Adjusting fixing lugs are detachably arranged in the width adjusting grooves. A trigger rod used for triggering the travel switch is arranged on the end wall of the side, facing the air cylinder, of the insertion plate door. By arranging the fixing lugs capable of moving along the width adjusting grooves, fixing of air cylinders of different specifications is achieved, when a travel switch needs to be installed, a worker adjusts the height of the fixing lugs according to the type of the air cylinders, and fixing of the travel switch can be completed after the fixing lugs are installed.

Description

Technical Field

[0001] The invention relates to the technical field of travel switches, in particular to a travel switch fixing device for a plug-in door control cylinder of a thermal power plant. Background Art

[0002] Travel switches are widely used in various machine tools and lifting machinery to control their travel and provide terminal limit protection. Travel switches can be installed on relatively static objects (such as fixed frames, door frames, etc., referred to as static objects) or moving objects (such as traveling vehicles, doors, etc., referred to as animals). When an animal approaches a static object, the connecting rod of the switch drives the contact of the switch to cause the closed contact to disconnect or the open contact to close. The change of the open and closed state of the switch contact controls the action of the circuit and mechanism.

[0003] Travel switches are widely used in thermal power plants. By fixing the travel switches in different positions and ways, and using a variety of measurement methods, the state of the object can be determined. However, traditional travel switches are difficult to disassemble and cannot be applied to a variety of cylinders, so there are many problems of not being able to match the cylinder during installation. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To achieve the above object, the present invention proposes a travel switch fixing device for a gate control cylinder of a thermal power plant, comprising a cylinder, a connecting plate fixedly connected to the output end of the cylinder, and a gate fixedly connected to the end of the connecting plate away from the cylinder;

[0006] A main body plate is detachably provided on one side of the cylinder, a plurality of travel switches are provided on the main body plate, a fixed plate is provided on one end of the main body plate along the vertical cylinder output movement direction, a width adjustment slot is provided on one end of the main body plate opposite to the fixed plate, the width adjustment slot is provided along the vertical cylinder output movement direction, and an adjustment fixing ear is detachably provided in the width adjustment slot;

[0007] A trigger rod for triggering a travel switch is arranged on the end wall of the plug-in door facing the cylinder.

[0008] The present invention achieves fixation of cylinders of different specifications by providing a fixing ear that can move along the width adjustment groove. When a travel switch needs to be installed, the staff adjusts the height of the fixing ear according to the cylinder model. After the fixing ear is installed, the switch can be fixed.

[0009] Optionally, the fixing plate is configured as an arc plate, and a clamping arc groove is provided on the side of the arc plate facing the cylinder.

[0010] Furthermore, an adjustment hole is provided on the adjustment fixing ear, an adjustment bolt is inserted into the adjustment hole, and the adjustment bolt passes through the width adjustment slot and is threadedly connected with a fixing nut.

[0011] Furthermore, a clamping plate is arranged at one end of the adjusting fixing ear away from the adjusting hole, and the clamping plate is arranged in a mirror image with the fixing plate.

[0012] Furthermore, the clamping plate is configured as an arc-shaped plate, and a clamping groove is provided on a side of the clamping plate facing the cylinder.

[0013] Furthermore, the engaging groove is configured as an arc groove.

[0014] Furthermore, the travel switch includes a first travel switch for sending a door closing signal and a second travel switch for sending a door opening signal, and the first travel switch is arranged between the second travel switch and the plug-in door.

[0015] Furthermore, the first travel switch adopts a normally open node, and the second travel switch adopts a normally closed node.

[0016] Furthermore, the distance between the fixing ear and the forming switch is not less than the maximum diameter of the trigger rod.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 It is a schematic diagram of the overall structure of a travel switch fixing device for a flapper door control cylinder of a thermal power plant according to the present invention;

[0020] Figure 2 The invention is an exploded schematic diagram of a main body plate and a fixing ear structure of a travel switch fixing device of a plug-in door control cylinder of a thermal power plant according to the present invention.

[0021] Description of reference numerals:

[0022] 1. Cylinder; 2. Connecting plate; 3. Plug-in door; 4. Main body plate; 41. Width adjustment slot; 5. Travel switch; 51. First travel switch; 52. Second travel switch; 6. Fixing plate; 61. Clamping arc slot; 7. Fixing ear; 71. Adjusting hole; 72. Adjusting bolt; 73. Fixing nut; 74. Clamping plate; 741. Clamping slot; 8. Trigger rod. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, examples of which 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 intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0024] The present application provides a fixing device for a plug-in door 3 controlling a cylinder 1 travel switch 5 in a thermal power plant, as shown below. Figure 1 to Figure 2 Elaborate in detail.

[0025] A fixing device for controlling a cylinder 1 travel switch 5 by a plug-in door 3 in a thermal power plant, comprising a cylinder 1, a connecting plate 2 is fixedly connected to the output end of the cylinder 1, and a plug-in door 3 is fixedly connected to the end of the connecting plate 2 away from the cylinder 1;

[0026] A main body plate 4 is detachably provided on one side of the cylinder 1, and a plurality of travel switches 5 are provided on the main body plate 4. A fixing plate 6 is provided at one end of the main body plate 4 along the output moving direction of the cylinder 1. A width adjustment groove 41 is provided at one end of the main body plate 4 facing the fixing plate 6. The width adjustment groove 41 is provided along the output moving direction of the cylinder 1, and an adjustment fixing ear 7 is detachably provided in the width adjustment groove 41.

[0027] A trigger rod 8 for triggering the travel switch 5 is arranged on the end wall of the plug-in door 3 facing the cylinder 1 .

[0028] The present invention achieves fixation of cylinders 1 of different specifications by providing a fixing ear 7 that can move along the width adjustment groove 41. When it is necessary to install a travel switch 5, the staff adjusts the height of the fixing ear 7 according to the model of the cylinder 1. After the fixing ear 7 is installed, the fixation of the switch can be completed.

[0029] In some embodiments, the fixing plate 6 is configured as an arc plate, and a clamping arc groove 61 is configured on the side of the arc plate facing the cylinder 1. The configuration of the arc plate and the clamping arc groove 61 can form a hook-shaped structure, so that the fixing plate 6 can be clamped in the groove on the surface of the cylinder 1; and since the structure of the cylinder 1 on the market is that most of the support columns are centrally symmetrically arranged around the cylinder body, which are used to assist in supporting the bases at both ends of the cylinder body of the cylinder 1, the arc plate can also be hung on the support column of the cylinder 1, so as to facilitate the staff to fix it.

[0030] In some embodiments, an adjustment hole 71 is provided on the adjustment fixing ear 7, an adjustment bolt 72 is inserted into the adjustment hole 71, and the adjustment bolt 72 passes through the width adjustment slot 41 and is threadedly connected with a fixing nut 73. The fixing bolt and the fixing nut 73 can clamp the fixing ear 7 and the main body plate 4 after being threaded, so that there is a large friction force between the main body plate 4 and the fixing ear 7, so that there is no sliding displacement between the fixing ear 7 and the main body plate 4, and the fixing ear 7 is prevented from being separated from the fixed position, thereby completing the installation of the main body plate 4.

[0031] In some embodiments, a clamping plate 74 is provided at one end of the adjusting fixing ear 7 away from the adjusting hole 71, and the clamping plate 74 is arranged in a mirror image with the fixing plate 6. The setting of the clamping plate 74 can conveniently cooperate with the fixing plate 6 to clamp and fix the surface of the cylinder 1, thereby facilitating the fixing ear 7 to clamp and fix cylinders 1 of different specifications.

[0032] In some embodiments, the clamping plate 74 is configured as an arc-shaped plate, and a clamping groove 741 is provided on the side of the clamping plate 74 facing the cylinder 1. The arrangement of the arc-shaped plate and the clamping groove 741 can also form a hook-shaped structure, so that the fixing plate 6 can be clamped in the groove on the surface of the cylinder 1; and also because the structure of the cylinder 1 on the market is mostly provided with support columns symmetrically around the cylinder body, which is used to provide auxiliary support for the bases at both ends of the cylinder body of the cylinder 1, the arrangement of the clamping plate 74 in the form of an arc-shaped plate can also be hung on the support column of the cylinder 1, so as to facilitate the staff to fix it.

[0033] In some embodiments, the clamping groove 741 is configured as an arc groove. The configuration of the arc groove can conveniently form a hook-shaped edge, so that the clamping plate 74 can be clamped into the groove on the surface of the cylinder 1, and can also conveniently be hung on the support column around the cylinder body of the cylinder 1.

[0034] In some embodiments, the travel switch 5 includes a first travel switch 51 for sending a door closing signal and a second travel switch 52 for sending a door opening signal, and the first travel switch 51 is arranged between the second travel switch 52 and the plug-in door 3. When the trigger rod 8 touches the first travel switch 51, the first travel switch 51 sends a door closing signal, and when the second travel switch 52 is triggered, the second travel switch 52 sends a door opening signal; in order to achieve the above effect, in one embodiment, the first travel switch 51 adopts a normally open node, and the second travel switch 52 adopts a normally closed node.

[0035] In some embodiments, in order to avoid the situation where the trigger rod 8 cannot trigger the travel switch 5 due to collision between the trigger rod 8 and the fixing ear 7, the distance between the fixing ear 7 and the switch is set to be no less than the maximum diameter of the trigger rod 8.

[0036] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0041] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A travel switch fixing device for a gate control cylinder of a thermal power plant, characterized in that: It comprises a cylinder, wherein the output end of the cylinder is fixedly connected to a connecting plate, and the end of the connecting plate away from the cylinder is fixedly connected to a plug-in door; A main body plate is detachably provided on one side of the cylinder, a plurality of travel switches are provided on the main body plate, a fixed plate is provided on one end of the main body plate along the vertical cylinder output movement direction, a width adjustment slot is provided on one end of the main body plate opposite to the fixed plate, the width adjustment slot is provided along the vertical cylinder output movement direction, and an adjustment fixing ear is detachably provided in the width adjustment slot; A trigger rod for triggering a travel switch is arranged on the end wall of the plug-in door facing the cylinder.

2. A travel switch fixing device for a gate control cylinder of a thermal power plant as claimed in claim 1, characterized in that: The fixing plate is configured as an arc plate, and a clamping arc groove is provided on the side of the arc plate facing the cylinder.

3. A travel switch fixing device for a gate control cylinder of a thermal power plant as claimed in claim 1, characterized in that: The adjusting and fixing ear is provided with an adjusting hole, an adjusting bolt is inserted into the adjusting hole, and the adjusting bolt passes through the width adjusting groove and is threadedly connected with a fixing nut.

4. A travel switch fixing device for a gate control cylinder of a thermal power plant as claimed in claim 3, characterized in that: A clamping plate is arranged at one end of the adjusting fixing ear away from the adjusting hole, and the clamping plate is arranged in a mirror image with the fixing plate.

5. A travel switch fixing device for a gate control cylinder of a thermal power plant as claimed in claim 4, characterized in that: The clamping plate is configured as an arc-shaped plate, and a clamping groove is provided on the side of the clamping plate facing the cylinder.

6. A travel switch fixing device for a gate control cylinder of a thermal power plant as claimed in claim 5, characterized in that: The clamping groove is configured as an arc groove.

7. A travel switch fixing device for a gate control cylinder of a thermal power plant as claimed in claim 1, characterized in that: The travel switch comprises a first travel switch for sending a door closing signal and a second travel switch for sending a door opening signal, and the first travel switch is arranged between the second travel switch and the plug-in door.

8. A travel switch fixing device for a gate control cylinder of a thermal power plant as claimed in claim 7, characterized in that: The first travel switch adopts a normally open node, and the second travel switch adopts a normally closed node.

9. A travel switch fixing device for a gate control cylinder of a thermal power plant as claimed in claim 1, characterized in that: The distance between the fixing ear and the forming switch is not less than the maximum diameter of the trigger rod.

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