Explosion-proof programmable controller

Abstract

The utility model provides an explosion-proof programmable controller. The explosion-proof programmable controller comprises a first shell and a second shell, the first shell and the second shell are both in a hollow cavity shape and are provided with openings; a sliding block is arranged on the inner surface of the first shell, and a sliding groove matched with the sliding block is formed in the outer surface of the second shell. The length of the sliding block is the same as that of the sliding groove, and when the sliding block completely enters the sliding groove, the second shell is sleeved with the first shell to form a sealed cavity. A programmable controller body is arranged in the second shell, and a through head used for being connected with an external cable is arranged on the second shell. According to the explosion-proof programmable controller disclosed by the utility model, through the first shell and the second shell which are sleeved with each other and through the fixing effect of the bolt, the first shell and the second shell form a sealed cavity, and meanwhile, the sliding block and the sliding groove which are the same in length are matched with each other; and the fastening strength of the sealing cavity formed by the first shell and the second shell is further improved, the explosion-proof effect is enhanced, and use and operation are convenient.

Description

Technical Field

[0001] The utility model belongs to the field of mining equipment, in particular to an explosion-proof programmable controller. Background Art

[0002] As an automatic control device, programmable controller has been widely used in industrial production. With the continuous improvement of underground mineral mining technology, the number of programmable controllers used in underground mining equipment is also increasing. How to improve the explosion-proof performance of programmable controllers has become an increasingly important issue in underground mining production safety. Existing explosion-proof programmable controllers generally have limited explosion-proof performance and complex operation and use. Utility Model Content

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes an explosion-proof programmable controller.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0005] An explosion-proof programmable controller includes a first housing and a second housing; both the first housing and the second housing are hollow and have an opening; a slider is provided on the inner surface of the first housing, and a slide groove is provided on the outer surface of the second housing to cooperate with the slider; the slider is the same length as the slide groove; when the slider is fully inserted into the slide groove, the first housing is sleeved onto the outside of the second housing to form a sealed cavity; the programmable controller body is provided within the second housing, and a through-hole for connecting an external cable is provided on the second housing;

[0006] An external threaded hole is provided on the surface of the first shell, and an internal threaded hole is provided on the surface of the second shell. When the first shell and the second shell form a sealed cavity, the bolts pass through the external threaded hole and the internal threaded hole in sequence to fix the positions of the first shell and the second shell.

[0007] In some embodiments of the present invention, the first shell and the second shell are both cubic in shape, and the three sliders are respectively arranged on the left wall, right wall and rear wall of the inner surface of the first shell; the three sliding grooves are respectively arranged on the left wall, right wall and rear wall of the outer surface of the second shell; the three sliders slide one by one in the three sliding grooves.

[0008] In some embodiments of the present invention, the front surface of the first shell is provided with explosion-proof glass.

[0009] In some embodiments of the present invention, a button connected to the programmable controller body is provided on the front surface of the first shell.

[0010] In some embodiments of the present invention, a handle is provided on the top of the outer surface of the first shell.

[0011] In some embodiments of the present invention, a fixing seat is provided on the rear side wall of the outer surface of the first shell.

[0012] In some embodiments of the present invention, multiple external threaded holes are provided on the surface of the first shell, and multiple internal threaded holes are provided on the surface of the second shell; when the first shell and the second shell form a sealed cavity, the positions of all external threaded holes and all internal threaded holes correspond one to one and are respectively connected and fixed by bolts.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] The utility model discloses an explosion-proof programmable controller, which realizes that the first shell and the second shell form a sealed cavity through the first shell and the second shell that are mutually nested and fixed by bolts. At the same time, the cooperation of the slider and the slide groove of the same length further improves the fastening strength of the sealed cavity formed by the first shell and the second shell, enhances the explosion-proof effect, and facilitates use and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0016] In the attached figure:

[0017] Figure 1 This is a schematic diagram of the first structure of an explosion-proof programmable controller according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the main view of an explosion-proof programmable controller according to an embodiment of the present utility model;

[0019] Figure 3 This is a second structural diagram of an explosion-proof programmable controller according to an embodiment of the present utility model;

[0020] Figure 4 This is a bottom view schematic diagram of an explosion-proof programmable controller according to an embodiment of the present utility model.

[0021] Description of reference numerals:

[0022] 1-first housing; 11-external threaded hole; 12-button; 13-explosion-proof glass; 14-handle; 15-fixing seat; 16-slider; 2-second housing; 21-internal threaded hole; 22-slide groove; 3-PLC body; 4-through head; 5-bolt. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0026] In the description of this utility model, it should be further clarified that the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first," "second," etc. may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0027] How to improve the explosion-proof performance of programmable controllers has become an increasingly important issue in underground mining production safety. Existing explosion-proof programmable controllers generally have limited explosion-proof performance and complex operation and use.

[0028] like Figures 1 to 4 As shown, the explosion-proof programmable controller disclosed in the present invention further improves the fastening strength of the sealed cavity formed by the first shell 1 and the second shell 2 by means of the mutually nested first shell 1 and the second shell 2, and the cooperation of the slider 16 and the slide groove 22 of the same length, thereby enhancing the explosion-proof effect.

[0029] The utility model discloses an explosion-proof programmable controller which can be applied to various working scenes both underground and above wells that need to meet explosion-proof requirements.

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0031] In one embodiment of the present invention, Figures 1 to 4As shown, an explosion-proof programmable controller includes a first housing 1 and a second housing 2; both the first housing 1 and the second housing 2 are hollow and have an opening; a slider 16 is provided on the inner surface of the first housing 1, and a slide groove 22 is provided on the outer surface of the second housing 2 to cooperate with the slider 16; the slider 16 is the same length as the slide groove 22, and when the slider 16 is fully inserted into the slide groove 22, the first housing 1 is sleeved on the outside of the second housing 2 to form a sealed cavity; a programmable controller body 3 is provided in the second housing 2, and a through-hole 4 for connecting an external cable is provided on the second housing 2;

[0032] An external threaded hole 11 is provided on the surface of the first shell 1, and an internal threaded hole 21 is provided on the surface of the second shell 2. When the first shell 1 and the second shell 2 form a sealed cavity, the bolt 5 passes through the external threaded hole 11 and the internal threaded hole 21 in sequence to fix the position of the first shell 1 and the second shell 2.

[0033] In the practical application of this utility model, Figures 1 to 4 As shown, first, the operator separates the first shell 1 from the second shell 2 with the help of the cooperation of the slider 16 and the slide groove 22, and the external cable is connected to the programmable controller body 3 arranged in the second shell 2 through the through-head 4. When the connection is completed, the first shell 1 and the second shell 2 are closed. At this time, the first shell 1 is sleeved on the outside of the second shell 2 to form a sealed cavity, and the slider 16 is fully inserted into the slide groove 22. Since the length of the slider 16 is the same as the length of the slide groove 22, the cooperation of the slider 16 and the slide groove 22 realizes the further fixing effect of the first shell 1 and the second shell 2, and improves the explosion-proof effect of the first shell 1 sleeved on the outside of the second shell 2 to form a sealed cavity.

[0034] Finally, bolts 5 are used to pass through the external threaded holes 11 and the internal threaded holes 21 in sequence to complete the overall fixation of the first housing 1 and the second housing 2 .

[0035] In one embodiment of the present invention, Figures 2 to 3 As shown, the first shell 1 and the second shell 2 are both cubic in shape, and the three sliders 16 are respectively arranged on the left wall, right wall and rear wall of the inner surface of the first shell 1; the three sliding grooves 22 are respectively arranged on the left wall, right wall and rear wall of the outer surface of the second shell 2; the three sliders 16 slide one by one in the three sliding grooves 22.

[0036] In this embodiment, the three sliders 16 and the three slide grooves 22 are respectively arranged in a triangular distribution. The triangular distribution effectively improves the fixing strength after the first shell 1 and the second shell 2 form a sealed cavity, thereby improving the explosion-proof effect.

[0037] In one embodiment of the present invention, Figure 2 As shown, the front surface of the first housing 1 is provided with explosion-proof glass 13 .

[0038] In this embodiment, if Figure 2 As shown, the opening of the first shell 1 is set on the bottom surface of the shell, the opening of the second shell 2 is set on the front surface of the shell, and the explosion-proof glass 13 is set on the front surface of the first shell 1. The working status of the programmable controller body 3 set on the second shell 2 can be observed through the explosion-proof glass 13.

[0039] In this embodiment, if Figure 2 As shown, a button 12 connected to the programmable controller body 3 is provided on the front surface of the first shell 1 .

[0040] In this embodiment, if Figure 2 As shown, a handle 14 is provided on the top of the outer surface of the first shell 1 .

[0041] In this embodiment, the provision of the handle 14 facilitates the movement of the explosion-proof programmable controller.

[0042] In one embodiment of the present invention, Figure 3 As shown, a fixing seat 15 is provided on the rear side wall of the outer surface of the first shell 1 .

[0043] In this embodiment, a through hole for fixing is provided on the fixing base 15 , and the explosion-proof programmable controller can be fixed at a position where it is needed through the fixing base 15 .

[0044] In one embodiment of the present invention, Figure 1 As shown, multiple external threaded holes 11 are provided on the surface of the first shell 1, and multiple internal threaded holes 21 are provided on the surface of the second shell 2; when the first shell 1 and the second shell 2 form a sealed cavity, all external threaded holes 11 and all internal threaded holes 21 correspond to each other in position and are connected and fixed by bolts 5 respectively.

[0045] In this embodiment, multiple external threaded holes 11 and multiple internal threaded holes 21 are provided, which ensures the stability of the fixation between the first shell 1 and the second shell 2 and improves the explosion-proof effect, wherein multiple bolts 5 are provided as needed.

[0046] The above describes the embodiments of the present invention. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Although each embodiment has been described separately, this does not mean that the measures in each embodiment cannot be used in combination to advantage. The scope of the present invention is defined by the appended claims and their equivalents. Without departing from the scope of the present invention, those skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present invention.

Claims

1. An explosion-proof programmable controller, characterized in that: The invention comprises a first shell (1) and a second shell (2); the first shell (1) and the second shell (2) are both in the shape of a hollow cavity and have an opening; a slider (16) is provided on the inner surface of the first shell (1), and a slide groove (22) is provided on the outer surface of the second shell (2) to cooperate with the slider (16); the length of the slider (16) is the same as that of the slide groove (22); when the slider (16) completely enters the slide groove (22), the first shell (1) is sleeved on the outside of the second shell (2) to form a sealed cavity; a programmable controller body (3) is provided in the second shell (2), and a through-hole (4) for connecting an external cable is provided on the second shell (2); An external threaded hole (11) is provided on the surface of the first shell (1), and an internal threaded hole (21) is provided on the surface of the second shell (2). When the first shell (1) and the second shell (2) form a sealed cavity, a bolt (5) passes through the external threaded hole (11) and the internal threaded hole (21) in sequence, so that the first shell (1) and the second shell (2) are fixed in position.

2. An explosion-proof programmable controller according to claim 1, characterized in that: The first shell (1) and the second shell (2) are both in a cubic shape, and the three sliders (16) are respectively arranged on the left side wall, the right side wall and the rear side wall of the inner surface of the first shell (1); the three slide grooves (22) are respectively arranged on the left side wall, the right side wall and the rear side wall of the outer surface of the second shell (2); and the three sliders (16) slide in the three slide grooves (22) in a one-to-one correspondence.

3. An explosion-proof programmable controller according to claim 2, characterized in that: The front surface of the first housing (1) is provided with explosion-proof glass (13).

4. An explosion-proof programmable controller according to claim 3, characterized in that: The front surface of the first housing (1) is provided with a button (12) connected to the programmable controller body (3).

5. The explosion-proof programmable controller according to claim 1, characterized in that: A handle (14) is provided on the top of the outer surface of the first shell (1).

6. The explosion-proof programmable controller according to claim 1, characterized in that: A fixing seat (15) is provided on the rear side wall of the outer surface of the first shell (1).

7. The explosion-proof programmable controller according to claim 1, characterized in that: A plurality of external threaded holes (11) are provided on the surface of the first shell (1), and a plurality of internal threaded holes (21) are provided on the surface of the second shell (2); when the first shell (1) and the second shell (2) form a sealed cavity, all the external threaded holes (11) and all the internal threaded holes (21) correspond in position to each other and are connected and fixed respectively by the bolts (5).

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