Switching-on and switching-off device and underground explosion-proof electrical equipment

Abstract

The invention relates to the technical field of coal mine automation, in particular to an on-off device and underground flame-proof electrical equipment. The closing and opening device comprises a rotating shaft set, a handle, a pull rod, a mounting plate, an opening and closing assembly and a transmission rod, the rotating shaft set is rotatably arranged on the box body and provided with a first rotating axis, the handle is arranged at one end of the rotating shaft set, one end of the pull rod is connected with the other end of the rotating shaft set, and the other end of the pull rod is provided with a guide groove; the opening and closing assembly is rotatably arranged on the mounting plate in a penetrating mode and provided with a second rotating axis and a moving end, the first rotating axis is located between the second rotating axis and the moving end, a pushing hole is formed in the moving end of the opening and closing assembly and used for installing a switch of the electric device, and the transmission rod is arranged in the guide groove and connected with the opening and closing assembly. The switching-on and switching-off device is good in reliability, and the problem that parts are damaged in the switching-on and switching-off process of a switch of an electric device is solved.

Description

Technical Field

[0001] This invention relates to the field of coal mine automation technology, specifically to a combination and separation device and an explosion-proof electrical device for underground mining. Background Technology

[0002] Explosion-proof electrical equipment contains components that can ignite explosive gas atmospheres, withstand the pressure generated by an internal explosion, and prevent the explosion from propagating to the surrounding environment. Internal switching devices are operated via external handles. In related technologies, the circuit breaker mechanism is operated via a flexible shaft inside the casing. However, this method, due to uneven stress and prolonged use in humid underground environments, is prone to causing the operating mechanism to fail. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention propose a switching device that has high reliability, reduces component damage during the switching of electrical components, and enables the switching of electrical components in explosion-proof electrical equipment in hazardous environments using the device of the present invention.

[0005] An embodiment of the present invention provides an explosion-proof electrical device for underground mining.

[0006] The opening and closing device according to an embodiment of the present invention includes a rotating shaft assembly, a handle, a pull rod, a mounting plate, an opening and closing assembly, and a transmission rod. The rotating shaft assembly is rotatably mounted on the enclosure of an explosion-proof electrical equipment and has a first axis of rotation. One end of the rotating shaft assembly is located outside the enclosure, and the other end of the rotating shaft assembly is located inside the enclosure. The handle is located at the first end of the rotating shaft assembly. One end of the pull rod is connected to the other end of the rotating shaft assembly, and the other end of the pull rod is provided with a guide groove. The mounting plate is used to install electrical components and is installed inside the enclosure. The opening and closing assembly is rotatably mounted on the mounting plate and has a second axis of rotation and a moving end. The first axis of rotation is located between the second axis of rotation and the moving end. The moving end of the opening and closing assembly is provided with a push hole for installing a switch of the electrical component. One end of the transmission rod is located in the guide groove, and the other end of the transmission rod is connected to the opening and closing assembly to drive the opening and closing assembly to rotate.

[0007] The switching device of this invention has good reliability, reduces the problem of component damage during the switching of electrical components, and enables the switching of electrical components in explosion-proof electrical equipment in explosive hazardous environments.

[0008] In some embodiments, the first rotation axis is located on one side of the mounting plate in its thickness direction, and the second rotation axis of the opening and closing assembly is located on the other side of the mounting plate in its thickness direction, so that the setting of the opening and closing assembly on the mounting plate, the connection between the rotating shaft assembly and the pull rod do not interfere with each other, which facilitates the setting of the opening and closing assembly and the rotating shaft assembly, and makes the structural layout of the opening and closing device more reasonable.

[0009] In some embodiments, the mounting plate is provided with a clearance hole; the opening and closing assembly includes a round rod, a rotating arm and a push rod, the round rod is rotatably disposed on the other side of the mounting plate, one end of the rotating arm is disposed on the round rod, the other end of the rotating arm passes through the clearance hole and is connected to the push rod, the rotating arm is connected to the other end of the transmission rod, the push rod forms the moving end, and the push rod is provided with the pushing hole.

[0010] In some embodiments, the opening and closing assembly further includes two stops disposed on the other side of the mounting plate. Each stop has a mounting groove, and the two stops are opposite each other on the second rotation axis, with the openings of the two mounting grooves facing each other. Both ends of the round rod are rotatably disposed within the two mounting grooves. The two stops provide stable support for the round rod, ensuring the connection strength and reliability between the round rod and the mounting plate.

[0011] In some embodiments, there are two clearance holes and two rotating arms, each located within one of the two clearance holes. The two ends of the push rod are connected to the two rotating arms respectively. This ensures uniform force distribution at both ends of the push rod, prevents the push rod from being cantilevered, and guarantees the stability and reliability of the push rod's action on the switch.

[0012] In some embodiments, the guide groove is an oblong groove, the transmission rod has a pushing part located within the oblong groove, and the pushing part has a circumferential surface.

[0013] In some embodiments, the merging and splitting device further includes mounting blocks, having two mounting blocks respectively disposed at both ends of the mounting plate, with the pull rod located between the two mounting blocks. The mounting blocks are used to connect the housing, thereby facilitating the installation of the rotating shaft assembly and the pull rod.

[0014] In some embodiments, the rotating shaft assembly includes a rotating shaft, a clamping washer, and a fastener. The rotating shaft is rotatably mounted on the housing. The handle is located at one end of the rotating shaft. One end of the pull rod has a mating hole. The other end of the rotating shaft passes through the mating hole. The fastener is located at the other end of the rotating shaft to fix the rotating shaft and the pull rod. The clamping washer is located between the rotating shaft and the fastener.

[0015] In some embodiments, the merging and splitting device further includes a copper sleeve for passing through the housing, the outer side of the copper sleeve for abutting the housing, and the rotating shaft rotatably disposed on the inner side of the copper sleeve.

[0016] The explosion-proof electrical equipment for underground mining according to an embodiment of the present invention includes a housing, electrical components, and a switching device. The housing is provided with a mounting hole, the rotating shaft assembly is rotatably mounted on the mounting hole, the electrical components are mounted on the mounting plate, and the switch of the electrical components is located in the push hole of the opening and closing assembly. Attached Figure Description

[0017] Figure 1 This is one of the structural schematic diagrams of the explosion-proof electrical equipment for underground installations according to an embodiment of the present invention; Figure 2 This is a second structural schematic diagram of the explosion-proof electrical equipment for underground installations according to an embodiment of the present invention; Figure 3 This is the third structural schematic diagram of the explosion-proof electrical equipment for underground installations according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure between the rotating shaft, the pull rod, and the transmission rod in an embodiment of the present invention.

[0018] Figure label: 1000. Electrical equipment; 100. Combination and separation device; 1. Rotating shaft assembly; 11. First rotating axis; 12. Rotating shaft; 13. Pressure shim; 14. Fastener; 2. Handle; 3. Tie rod; 31. Guide groove; 311. Rectangular part; 312. Arc-shaped part; 4. Mounting plate, 41. Clearance hole; 5. Opening and closing assembly; 51. Second rotation axis; 52. Round rod; 53. Rotary arm; 54. Push rod; 55. Stop block; 56. Push hole; 6. Transmission rod; 61. Pushing part; 7. Installation block; 8. Copper sleeve; 200, enclosure; 300, electrical components; 3001, switch. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] The following is a reference to the appendix. Figures 1 to 4 The present invention describes in detail the combination and separation device 100 and the underground explosion-proof electrical equipment 1000 according to embodiments of the present invention.

[0021] The explosion-proof electrical equipment 1000 for underground mining, according to an embodiment of the present invention, includes a housing 200, electrical components 300, and a switching device 100. The housing 200 is provided with mounting holes, wherein... Figures 1 to 3 The image shown is a partial view of the 200-type box, according to... Figures 1 to 3 The direction shown is the upper panel of the box 200; the rest of the box 200 is not shown.

[0022] The opening and closing device 100 of this embodiment includes a rotating shaft assembly 1, a handle 2, a pull rod 3, a mounting plate 4, an opening and closing assembly 5, and a transmission rod 6. The rotating shaft assembly 1 is rotatably disposed in the mounting hole of the housing 200. The rotating shaft assembly 1 has a first rotation axis 11, that is, the rotating shaft assembly 1 rotates around the first rotation axis 11. (See reference...) Figure 1 One end (upper end) of the rotating shaft assembly 1 is located outside the housing 200, and the other end (lower end) of the rotating shaft assembly 1 is located inside the housing 200. A handle 2 is located at one end of the rotating shaft assembly 1, outside the housing 200. One end of the pull rod 3 is connected to the other end of the rotating shaft assembly 1, and the other end of the pull rod 3 has a guide groove 31. The pull rod 3 is located inside the housing 200. A mounting plate 4 is installed inside the housing 200, and an electrical component 300 is mounted on the mounting plate 4. An opening / closing assembly 5 is rotatably mounted on the mounting plate 4 and has a second rotation axis 51 and a moving end. A first rotation axis 11 is located between the second rotation axis 51 and the moving end. A push hole 56 is provided on the moving end of the opening / closing assembly 5, and the switch 3001 of the electrical component 300 is located within the push hole 56. One end of the transmission rod 6 is located within the guide groove 31, and the other end of the transmission rod 6 is connected to the opening / closing assembly 5 to drive the opening / closing assembly 5 to rotate.

[0023] In the explosion-proof electrical equipment 1000 of this invention, when the switch 3001 of the electrical device 300 needs to be operated, the handle 2 is rotated. The handle 2 drives the rotating shaft assembly 1 to rotate, and the rotating shaft assembly 1 drives the pull rod 3 to rotate. Since the opening and closing assembly 5 is rotatably arranged around the second rotation axis 51, the other end of the pull rod 3 pushes the transmission rod 6 in the guide groove 31 to rotate around the second rotation axis 51. The transmission rod 6 has a rotation process and a movement process along the wall of the guide groove 31 in the guide groove 31, thereby driving the moving end of the opening and closing assembly 5 to rotate. This enables the transmission rod 6 to drive the moving end to rotate around the second rotation axis 51, and then causes the moving end to push the switch 3001 to rotate, thereby realizing the opening and closing action of the switch 3001 of the electrical device 300.

[0024] In the opening and closing device 100 of this embodiment, the first rotation axis 11 is located between the second rotation axis 51 and the moving end, that is, the distance between the first rotation axis 11 and the moving end is less than the distance between the second rotation axis 51 and the moving end. On the one hand, while realizing the opening and closing action of the switch 3001 by rotating the handle 2, the rotation angle of the opening and closing component 5 is less than the rotation angle of the handle 2, reducing the circumferential motion amplitude of the opening and closing component 5. On the other hand, the contact position of the pull rod 3 and the transmission rod 6 is close to the moving end. According to the lever principle, in order to drive the opening and closing component 5 to rotate around the second rotation axis 51, the force intensity between the second rotation axis 51 and the moving end is less than the force intensity on the second rotation axis 51. That is, the force required for the person to rotate the handle 2 is reduced, thereby reducing the intensity of the force transmitted from the handle 2 to the opening and closing component 5, reducing the force intensity of each component in the force transmission path from the handle 2 to the switch 3001 of the electrical device 300, thereby reducing the possibility of damage to the opening and closing device 100. Furthermore, in the transmission path between the handle 2, the rotating shaft 12, the pull rod 3, and the transmission rod 6, the handle 2, the rotating shaft 12, and the pull rod 3 all rotate around the first rotation axis 11. When the pull rod 3 pushes the transmission rod 6 to move, the pull rod 3 and the transmission rod 6 are not rigidly connected. The cooperation between the guide groove 31 and the transmission rod 6 both pushes the transmission rod 6 to rotate and allows the transmission rod 6 to move within the guide groove 31, thereby driving the opening and closing assembly 5 to rotate around the second rotation axis 51. This ensures the transmission of movement from the handle 2 to the opening and closing assembly 5, and ensures that the moving end of the opening and closing assembly 5 drives the opening and closing operation of the switch 3001 of the electrical device 300.

[0025] Therefore, the opening and closing device 100 of the present invention has good reliability and reduces the problem of component damage during the opening and closing process of the switch 3001 of the operating electrical device 300.

[0026] In some embodiments, the first rotation axis 11 is located on one side of the mounting plate 4 in its thickness direction, and the second rotation axis 51 of the opening and closing assembly 5 is located on the other side of the mounting plate 4 in its thickness direction. The first rotation axis 11 and the second rotation axis 51 are located on opposite sides of the mounting plate 4, so that the setting of the opening and closing assembly 5 on the mounting plate 4 and the connection between the rotating shaft group 1 and the pull rod 3 do not interfere with each other, which facilitates the setting of the opening and closing assembly 5 and the rotating shaft group 1, and makes the structural layout of the opening and closing device 100 of the present invention more reasonable.

[0027] In some embodiments, the mounting plate 4 is provided with a clearance hole 41. The opening and closing assembly 5 includes a round rod 52, a rotating arm 53 and a push rod 54. The round rod 52 is rotatably disposed on the other side of the mounting plate 4, and the axis of the round rod 52 is collinear with the second rotation axis 51. One end of the rotating arm 53 is disposed on the round rod 52, and the other end of the rotating arm 53 passes through the clearance hole 41 and is connected to the push rod 54. The rotating arm 53 is connected to the other end (lower end) of the transmission rod 6. The push rod 54 forms a moving end and is provided with a pushing hole 56.

[0028] Specifically, the push hole 56 is a square hole that penetrates the push rod 54 in the thickness direction. The space of the push hole 56 is larger than the size of the switch 3001 of the electrical device 300. The switch 3001 of the electrical device 300 can move within the push hole 56 so that when the push plate pushes the switch 3001 to move through the wall of the push hole 56, the switch 3001 can rotate around its rotation center without the problem of the push rod 54 and the switch 3001 getting stuck.

[0029] Specifically, one end of the swing arm 53 is provided with a through hole and a threaded hole. The threaded hole communicates with the through hole, and the round rod 52 passes through the through hole. The fastening bolt is fitted in the threaded hole and abuts against the round tube to fix the swing arm 53 and the round rod 52.

[0030] In some embodiments, the opening / closing assembly 5 further includes two stops 55, which are disposed on the other side of the mounting plate 4. Each stop 55 has a mounting groove, and the two stops 55 are opposite each other on the second rotation axis 51, with the openings of the two mounting grooves facing each other. The two ends of the round rod 52 are rotatably disposed within the two mounting grooves. The two stops 55 provide stable support for the round rod 52, ensuring the connection strength and reliability between the round rod 52 and the mounting plate 4.

[0031] Furthermore, there are two clearance holes 41 and two rotating arms 53, with each rotating arm 53 located within one of the two clearance holes 41. Both ends of the push rod 54 are connected to the two rotating arms 53 respectively. The electrical component 300 is located between the two rotating arms 53. The connection between the two rotating arms 53 and the push rod 54 ensures that the force on both ends of the push rod 54 is even, preventing the push rod 54 from being in a cantilevered state and ensuring the stability and reliability of the push rod 54 in pushing the switch 3001.

[0032] In some embodiments, the guide groove 31 is an oblong groove, and the transmission rod 6 has a pushing part 61 located within the oblong groove. The pushing part 61 has a circumferential surface. The oblong groove includes a rectangular part 311 and an arcuate part 312. The oblong part 311 has arcuate parts 312 on both sides, and the wall of the arcuate part 312 has a smooth transition. The pushing part 61 has a circumferential surface, thereby ensuring the smooth cooperation between the pushing part 61 and the oblong groove, ensuring that the pushing part 61 can rotate and move within the guide groove 31, thereby ensuring the smooth motion transmission between the pull rod 3 and the transmission rod 6, and further improving the reliability of the merging and splitting device 100 of the present invention.

[0033] In some embodiments, the merging and splitting device 100 further includes two mounting blocks 7, which are respectively disposed at both ends of the mounting plate 4. The pull rod 3 is located between the two mounting blocks 7, and the mounting blocks 7 are used to connect the housing 200. The mounting blocks 7 form a space between the mounting plate 4 and the housing 200, thereby facilitating the installation of the rotating shaft assembly 1 and the pull rod 3.

[0034] In some embodiments, the rotating shaft assembly 1 includes a rotating shaft 12, a clamping washer 13, and a fastener 14. The rotating shaft 12 is rotatably mounted on the housing 200. The handle 2 is located at one end of the rotating shaft 12. One end of the pull rod 3 is provided with a mating hole. The other end of the rotating shaft 12 passes through the mating hole. The fastener 14 is located at the other end of the rotating shaft 12 to fix the rotating shaft 12 and the pull rod 3. The clamping washer 13 is located between the rotating shaft 12 and the fastener 14.

[0035] In some embodiments, the combining and separating device 100 further includes a copper sleeve 8, which is inserted through the mounting hole of the housing 200. The outer side of the copper sleeve 8 abuts against the housing 200, and the rotating shaft 12 is rotatably disposed on the inner side of the copper sleeve 8. The inner side of the copper sleeve 8 and the rotating shaft 12 form a cylindrical explosion-proof mating surface.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" of the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0041] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A combining and separating device (100), characterized in that, include: A rotating shaft assembly (1) is rotatably mounted on the enclosure (200) of an explosion-proof electrical equipment and has a first rotation axis (11). One end of the rotating shaft assembly (1) is located outside the enclosure (200), and the other end of the rotating shaft assembly (1) is located inside the enclosure (200). Handle (2), the handle (2) is provided at one end of the rotating shaft assembly (1); A pull rod (3), one end of which is connected to the other end of the rotating shaft assembly (1), and the other end of the pull rod (3) is provided with a guide groove (31). Mounting plate (4), the mounting plate (4) is used to mount electrical components (300) and install them inside the housing (200); An opening and closing assembly (5) is rotatably mounted on the mounting plate (4) and has a second rotation axis (51) and a moving end. The first rotation axis (11) is located between the second rotation axis (51) and the moving end. The moving end of the opening and closing assembly (5) is provided with a push hole (56), which is used to install the switch (3001) of the electrical device (300). A transmission rod (6) is provided at one end in the guide groove (31), and the other end of the transmission rod (6) is connected to the opening and closing assembly (5) to drive the opening and closing assembly (5) to rotate.

2. The combining and separating device (100) according to claim 1, characterized in that, The first rotation axis (11) is located on one side of the mounting plate (4) in its thickness direction, and the second rotation axis (51) of the opening and closing assembly (5) is located on the other side of the mounting plate (4) in its thickness direction.

3. The combining and separating device (100) according to claim 2, characterized in that, The mounting plate (4) is provided with a clearance hole (41); the opening and closing assembly (5) includes a round rod (52), a rotating arm (53) and a push rod (54). The round rod (52) is rotatably disposed on the other side of the mounting plate (4). One end of the rotating arm (53) is disposed on the round rod (52). The other end of the rotating arm (53) passes through the clearance hole (41) and is connected to the push rod (54). The rotating arm (53) is connected to the other end of the transmission rod (6). The push rod (54) forms the moving end. The push rod (54) is provided with a pushing hole (56).

4. The combining and separating device (100) according to claim 3, characterized in that, The opening and closing assembly (5) further includes two stops (55), which are located on the other side of the mounting plate (4). The stops (55) are provided with mounting grooves. The two stops (55) are opposite each other on the second rotation axis (51), and the openings of the two mounting grooves are opposite each other. The two ends of the round rod (52) are rotatably located in the two mounting grooves respectively.

5. The combining and separating device (100) according to claim 3, characterized in that, There are two clearance holes (41) and two rotating arms (53). The two rotating arms (53) are respectively located in the two clearance holes (41), and the two ends of the push rod (54) are respectively connected to the two rotating arms (53).

6. The combining and separating device (100) according to claim 1, characterized in that, The guide groove (31) is a waist-shaped groove, and the transmission rod (6) has a pushing part (61). The pushing part (61) is located in the waist-shaped groove and has a circumferential surface.

7. The combining and separating device (100) according to claim 1, characterized in that, It further includes mounting blocks (7), of which there are two, and the two mounting blocks (7) are respectively located at both ends of the mounting plate (4), and the pull rod (3) is located between the two mounting blocks (7). The mounting blocks (7) are used to connect the housing (200).

8. The combining and separating device (100) according to claim 1, characterized in that, The rotating shaft assembly (1) includes a rotating shaft (12), a clamping washer (13), and a fastener (14). The rotating shaft (12) is rotatably mounted on the housing (200). The handle (2) is located at one end of the rotating shaft (12). One end of the pull rod (3) is provided with a mating hole. The other end of the rotating shaft (12) passes through the mating hole. The fastener (14) is located at the other end of the rotating shaft (12) to fix the rotating shaft (12) and the pull rod (3). The clamping washer (13) is located between the rotating shaft (12) and the fastener (14).

9. The combining and separating device (100) according to claim 8, characterized in that, It further includes a copper sleeve (8), which is used to pass through the box body (200), the outer side of the copper sleeve (8) is used to abut against the box body (200), and the rotating shaft (12) is rotatably disposed on the inner side of the copper sleeve (8).

10. An explosion-proof electrical device for underground mining, characterized in that, It includes a housing (200), an electrical component (300), and a closing / opening device (100). The closing / opening device (100) is the closing / opening device (100) according to any one of claims 1 to 9. The housing (200) is provided with a mounting hole. The rotating shaft assembly (1) is rotatably disposed on the mounting hole. The electrical component (300) is disposed on the mounting plate (4). The switch (3001) of the electrical component (300) is located in the push hole (56) of the opening / closing assembly (5).

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