Wiring device for explosion-proof motor

Abstract

The invention relates to the technical field of wiring, in particular to a wiring device for an explosion-proof motor, which comprises a motor body, the bottom of the motor body is fixedly connected with a mounting bracket, and the output end of the motor body is fixedly connected with a driving shaft; the threading device is fixedly connected to the top of the motor body through a bolt, and the installation support is located under the threading device; the ventilation device is used for cooling the threading device, the ventilation device is arranged, the centrifugal fan rotates to generate airflow, the threading device can be cooled, and electrical connection parts such as a wire connector in the threading device can generate certain heat in the operation process of the motor body. If the heat cannot be dissipated in time, the temperature of the connection part may be too high, and the stability and reliability of electrical connection are affected. The cooling airflow can effectively take away the heat, thereby preventing overheating of components such as the wire connector, and ensuring normal operation of electrical connection.

Description

Technical Field

[0001] The invention relates to the technical field of wiring, and in particular to a wiring device for an explosion-proof motor. Background Art

[0002] In modern industrial production, motors are widely used as important power equipment. Among them, explosion-proof motors play a vital role in some special working environments, such as places with flammable and explosive gases, dust, etc. However, there are some problems in the wiring devices of existing explosion-proof motors that need to be solved urgently.

[0003] When the motor is running, the electrical connection components such as the connector in the wiring device will generate a lot of heat. If this heat cannot be dissipated in time, the temperature of the connection part will be too high, thus affecting the stability and reliability of the electrical connection. Excessive temperature may also accelerate the aging and damage of the electrical connection components, reduce the service life of the motor, and may even cause safety accidents. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention adopts a technical solution to solve the technical problems thereof: a wiring device for explosion-proof motors, comprising: a motor body, the bottom of the motor body is fixedly connected with a mounting bracket, and the output end of the motor body is fixedly connected with a drive shaft; a threading device, the threading device is fixedly connected to the top of the motor body by bolts, and the mounting bracket is located directly below the threading device; a ventilation device, the ventilation device is used to cool the threading device, the outer side of the ventilation device is fixedly connected to the outer side of the motor body, the end of the drive shaft away from the motor body passes through the ventilation device and extends to the outer side of the ventilation device, and the device is mainly composed of a motor body, a mounting bracket, a threading device and a ventilation device; The threading device includes a junction box, the top of which is rotatably connected to a cover plate via a hinge, the bottom of which is fixedly connected to an elastic clamping plate, the inside of which is fixedly connected to a connector, one side of which is fixedly connected to an air blowing assembly, and the other side of which is fixedly connected to a harness fixing assembly. The junction box in the threading device is used to install the connector and other components. The cover plate is rotatably connected to the junction box via a hinge, and the elastic clamping plate at the bottom is clamped to the inner side of the junction box to ensure the sealing of the junction box; The ventilation device includes a ventilation shell, the inner side of the ventilation shell is rotatably connected to a centrifugal fan, the inner wall of the ventilation shell is slidably connected to an annular windshield, the top of the annular windshield is fixedly connected to a connecting plate, the top of the connecting plate is rotatably connected to a cross bar, the outer wall of the cross bar is rotatably connected to a limit slide bar, the outer wall of the limit slide bar is fixedly connected to a compression spring, the bottom end of the compression spring is fixedly connected to a rotating block, the outer side of the rotating block is rotatably connected to a rotating frame, the outer side of the rotating frame is fixedly connected to a handle, the centrifugal fan rotates to generate airflow, which can cool the threading device, and the cooling airflow can prevent components such as the wiring connector from overheating, ensuring the normal operation of the electrical connection. The ventilation shell can provide installation space and airflow channels for the centrifugal fan, and the annular windshield can control the opening and closing of the ventilation shell.

[0005] Preferably, the outer side of the ventilation shell is fixedly connected to the outer side of the motor body, the center of the centrifugal fan is fixedly connected to the outer wall of the drive shaft, and the two ends of the cross bar are slidably connected to the inner wall of the ventilation shell through limit grooves. The rotating frame is rotated by turning the handle. When the rotating frame rotates, it drives the rotating block to slide along the surface of the limit slide bar and forces the compression spring to be compressed. At this time, the angle between the limit slide bar and the cross bar is deflected. Under the elastic force of the compression spring, the cross bar slides to the other side of the arc groove opened on the inner wall of the ventilation shell.

[0006] Preferably, the outer side of the rotating frame is rotatably connected to the inner wall of the ventilation shell, the outer wall of the limiting slide rod is slidably connected to the inner side of the rotating block, and the handle is located on the outer side of the ventilation shell. The offset closing of the vent can reduce the moisture in the air from entering the motor body.

[0007] Preferably, the bottom of the junction box is fixedly connected to the top of the motor body, the outer side of the elastic clip is clamped with the inner side of the junction box, and the side of the blowing assembly away from the junction box is fixedly connected to the top of the ventilation shell. When the centrifugal fan rotates, the airflow enters the junction box through the ventilation shell.

[0008] Preferably, the blowing assembly includes an air inlet shell, the inner wall of the air inlet shell is fixedly connected to a hollow shell, the outer side of the hollow shell is fixedly connected to a ventilation box, the inner wall of the air inlet shell is fixedly connected to a guide rod, the outer wall of the guide rod is slidably connected to a push plate, the outer side of the push plate is fixedly connected to a return spring, the return spring drives the push plate to reset, and can isolate the outside air from contact with the filter plate, which can effectively prevent impurities such as dust in the air from being slowly adsorbed onto the filter plate under natural conditions.

[0009] Preferably, the outer side of the air inlet shell is fixedly connected to the outer side of the junction box, the inner wall of the junction box is fixedly connected to the outer wall of the hollow shell, the outer wall of the ventilation box is fixedly connected to the inner side of the junction box, and the end of the return spring away from the push plate is fixedly connected to the inner wall of the air inlet shell. The presence of the filter plate ensures that the airflow entering the junction box is clean, providing a good working environment for electrical connection.

[0010] Preferably, ventilation holes are opened in the wall of the ventilation box, a filter plate is fixedly connected to the inner wall of the hollow shell, a sealing cover is movably installed on the top of the air inlet shell by bolts, and the outer side of the air inlet shell is fixedly connected to the outer side of the ventilation shell. When it is necessary to clean the impurities on the filter plate, the sealing cover is removed from the air inlet shell by rotating the bolts on the sealing cover, and the impurities on the filter plate can be cleaned at this time.

[0011] Preferably, the wiring harness fixing assembly includes a fixing cylinder, the inner side of the fixing cylinder is slidably connected to a sliding ring, the outer side of the sliding ring is fixedly connected to a threaded tube, the outer side of the threaded tube is threadedly connected to a knob, the inner side of the sliding ring is fixedly connected to an elastic fixing plate, the outer side of the elastic fixing plate is fixedly connected to a triangular protrusion, the inner wall of the fixing cylinder is fixedly connected to a limiting ring, and by rotating the knob, the threaded tube drives the sliding ring to slide in the fixing cylinder, thereby adjusting the clamping force of the elastic fixing plate on the wiring harness.

[0012] Preferably, the outer side of the fixing cylinder is fixedly connected to the inner wall of the junction box, the outer wall of the junction box is rotatably connected to the outer side of the knob, the outer wall of the triangular protrusion is slidably connected to the outer wall of the limiting ring, and by adjusting the clamping force of the elastic fixing plate on the wiring harness, the wiring harness can be effectively prevented from loosening or falling off due to vibration, external force and other factors during the operation of the motor body.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention provides a ventilation device. When the motor body is in use, the centrifugal fan rotates to generate airflow, which can cool the threading device. The electrical connection components such as the wiring connector in the threading device will generate a certain amount of heat during the operation of the motor body. If the heat cannot be dissipated in time, the temperature of the connection part may be too high, affecting the stability and reliability of the electrical connection. The cooling airflow can effectively take away the heat, prevent the wiring connector and other components from overheating, and ensure the normal operation of the electrical connection.

[0014] 2. The present invention rotates the rotating frame by turning the handle. When the rotating frame rotates, it drives the rotating block to slide along the surface of the limiting slide bar and forces the compression spring to be compressed. At this time, the angle between the limiting slide bar and the cross bar is deflected. Under the elastic force of the compression spring, the cross bar slides to the other side of the arc groove opened on the inner wall of the ventilation shell, and drives the connecting plate to move together. The connecting plate drives the annular wind shield plate to rotate in the ventilation shell, so that the holes opened on the surface of the annular wind shield plate are misaligned with the holes opened on the surface of the ventilation shell, which can effectively prevent external dust, impurities, etc. from entering the interior of the ventilation device.

[0015] 3. The present invention can reduce the moisture in the air from entering the interior of the motor body by setting an annular windshield and closing the vents in an offset manner. Moisture may cause the metal parts inside the motor body to rust and corrode, affecting the electrical insulation performance and increasing the risk of motor body failure. Explosion-proof motors are usually used in special environments with higher requirements for moisture resistance. Closing the vents can better protect the motor from moisture. When the motor body is not working, closing the vents can prevent external foreign objects from entering the interior of the motor body in unexpected situations, causing safety hazards such as short circuits and sparks, and further improving the safety of the motor body when idle.

[0016] 4. The present invention provides a threading device, in which a junction box is used to install a wiring connector and other components. The cover plate is rotatably connected to the junction box through a hinge, and the elastic clamping plate at the bottom is clamped with the inner side of the junction box to ensure the sealing of the junction box and prevent dust and water vapor from entering.

[0017] 5. The present invention provides a blowing assembly. When there is no airflow, the reset spring drives the push plate to reset, which can isolate the contact between the outside air and the filter plate. This can effectively prevent dust and other impurities in the air from being slowly adsorbed onto the filter plate in a natural state. If the filter plate is exposed to the air for a long time, dust will continue to accumulate, gradually reducing the filtration efficiency of the filter plate, increasing the resistance of the airflow, and affecting the normal operation of the cooling system.

[0018] 6. The present invention sets a filter plate, which can block dust and other impurities. The ventilation box outside the hollow shell sends the cooling airflow into the junction box through the ventilation holes. If impurities enter the junction box, they may adhere to the connector and other components, affecting the quality of electrical connection and even causing faults such as short circuit. The existence of the filter plate ensures that the airflow entering the junction box is clean, providing a good working environment for electrical connection.

[0019] 7. The present invention provides a sealing cover. When it is necessary to clean the impurities on the filter plate, the sealing cover can be removed from the air inlet housing by rotating the bolts on the sealing cover. At this time, the impurities on the filter plate can be cleaned. Regular cleaning of impurities on the filter plate can reduce the wear and corrosion of the filter plate by impurities. The accumulation of impurities may cause the filter plate to bear greater pressure under the action of airflow, accelerating the damage of the filter plate. Timely cleaning of impurities can reduce this pressure, extend the service life of the filter plate, and reduce the cost of replacing the filter plate.

[0020] 8. The present invention sets a wire harness fixing assembly, passes the wire harness through the fixing tube and connects to the connector, and the elastic fixing plate inside the sliding ring can fix the wire harness. When the knob is rotated, the threaded tube drives the sliding ring to slide in the fixing tube, and at this time, the elastic fixing plate can be elastically deformed through the mutual contact between the limit ring and the triangular protrusion, thereby adjusting the clamping force of the elastic fixing plate on the wire harness.

[0021] 9. The present invention can effectively prevent the wire harness from loosening or falling off due to vibration, external force and other factors during the operation of the motor body by adjusting the clamping force of the elastic fixing plate on the wire harness. The motor body will generate certain vibrations during operation. If the wire harness is not well fixed, it may cause poor electrical connection and affect the normal operation of the motor body. The clamping force of the elastic fixing plate can ensure that the wire harness always maintains a stable connection with the connector, and the elastic deformation of the elastic fixing plate can also reduce damage to the wire harness.

[0022] 10. The present invention adjusts the clamping force of the elastic fixing plate on the wire harness by rotating the knob, and the threaded tube drives the sliding ring to slide in the fixing tube. This design enables the wire harness fixing assembly to adapt to wire harnesses of different diameters. Whether it is a thinner wire harness or a thicker wire harness, good fixation can be achieved by adjusting the clamping force, which improves the versatility and flexibility of the device, and also makes the removal and installation of the wire harness more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a schematic diagram of the structure of the ventilation device of the present invention; Figure 4 It is a structural schematic diagram of the position-limiting sliding rod of the present invention; Figure 5 It is a structural schematic diagram of the wiring device of the present invention; Figure 6 It is a schematic diagram of the structure of the blowing assembly of the present invention; Figure 7 It is a structural schematic diagram of the ventilation box of the present invention; Figure 8 It is a structural schematic diagram of the air inlet housing of the present invention; Fig. 9 It is a structural schematic diagram of the wiring harness fixing assembly of the present invention; Fig.10 It is a structural schematic diagram of the elastic card board of the present invention.

[0024] In the figure: 1, motor body; 2, mounting bracket; 3, ventilation device; 4, threading device; 5, driving shaft; 31, ventilation shell; 32, centrifugal fan; 33, annular wind shield; 34, connecting plate; 35, rotating frame; 36, rotating block; 37, limit slide bar; 38, cross bar; 39, compression spring; 30, handle; 41, junction box; 42, cover plate; 43, elastic card plate; 44, wiring connector; 45, air blowing Assembly; 46, wiring harness fixing assembly; 451, air inlet shell; 452, hollow shell; 453, ventilation box; 454, filter plate; 455, ventilation hole; 456, sealing cover; 457, guide rod; 458, push plate; 459, return spring; 461, fixing cylinder; 462, sliding ring; 463, threaded tube; 464, knob; 465, limit ring; 466, elastic fixing plate; 467, triangular protrusion. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0026] Example: See Figure 1 - Fig.10 The present invention provides a technical solution: a wiring device for explosion-proof motors, comprising: a motor body 1, a mounting bracket 2 is fixedly connected to the bottom of the motor body 1, and a drive shaft 5 is fixedly connected to the output end of the motor body 1; a threading device 4, the threading device 4 is fixedly connected to the top of the motor body 1 by bolts, and the mounting bracket 2 is located directly below the threading device 4; a ventilation device 3, the ventilation device 3 is used to cool the threading device 4, the outer side of the ventilation device 3 is fixedly connected to the outer side of the motor body 1, and the end of the drive shaft 5 away from the motor body 1 passes through the ventilation device 3 and extends to the outside of the ventilation device 3. The device is mainly composed of a motor body 1, a mounting bracket 2, a threading device 4 and a ventilation device 3. The output end of the motor body 1 is connected to the drive shaft 5 to provide power for the entire device. The centrifugal fan 32 in the ventilation device 3 is fixedly connected to the drive shaft 5. When the motor is working, the drive shaft 5 drives the centrifugal fan 32 to rotate; The threading device 4 includes a junction box 41, the top of which is rotatably connected to a cover plate 42 via a hinge, the bottom of which is fixedly connected to an elastic clamping plate 43, the inside of which is fixedly connected to a wiring connector 44, one side of which is fixedly connected to an air blowing assembly 45, and the other side of which is fixedly connected to a harness fixing assembly 46. The junction box 41 in the threading device 4 is used to install the wiring connector 44 and other components. The cover plate 42 is rotatably connected to the junction box 41 via a hinge, and the elastic clamping plate 43 at the bottom is clamped to the inside of the junction box 41 to ensure the sealing of the junction box 41 and prevent dust and water vapor from entering; The ventilation device 3 includes a ventilation shell 31, the inner side of the ventilation shell 31 is rotatably connected to a centrifugal fan 32, the inner wall of the ventilation shell 31 is slidably connected to an annular wind shield 33, the top of the annular wind shield 33 is fixedly connected to a connecting plate 34, the top of the connecting plate 34 is rotatably connected to a cross bar 38, the outer wall of the cross bar 38 is rotatably connected to a limiting slide bar 37, the outer wall of the limiting slide bar 37 is fixedly connected to a compression spring 39, the bottom end of the compression spring 39 is fixedly connected to a rotating block 36, the outer side of the rotating block 36 is rotatably connected to a rotating frame 35, the outer side of the rotating frame 35 is fixedly connected to a handle 30, the outer side of the ventilation shell 31 is fixedly connected to the outer side of the motor body 1, the center of the centrifugal fan 32 is fixedly connected to the outer wall of the driving shaft 5, The two ends of the crossbar 38 are slidably connected to the inner wall of the ventilation shell 31 through the limit groove, the outer side of the rotating frame 35 is rotatably connected to the inner wall of the ventilation shell 31, the outer wall of the limit slide bar 37 is slidably connected to the inner side of the rotating block 36, the handle 30 is located on the outer side of the ventilation shell 31, the bottom of the junction box 41 is fixedly connected to the top of the motor body 1, the outer side of the elastic clamping plate 43 is clamped to the inner side of the junction box 41, and the side of the blowing component 45 away from the junction box 41 is fixedly connected to the top of the ventilation shell 31. When the motor body 1 is in use, the centrifugal fan 32 rotates to generate airflow, which can cool the threading device 4. The electrical connection components such as the wiring connector 44 in the threading device 4 will generate a certain amount of heat during the operation of the motor body 1. If the heat cannot be dissipated in time, it may cause the temperature of the connection part to be too high, affecting the stability and reliability of the electrical connection. The cooling airflow can effectively take away the heat, prevent the wiring connector 44 and other components from overheating, and ensure the normal operation of the electrical connection. The ventilation shell 31 can provide installation space and air flow channel for the centrifugal fan 32, and the annular wind shield plate 33 can control the opening and closing of the ventilation shell 31. When the motor body 1 is not in use, the rotating frame 35 is rotated by turning the handle 30. When the rotating frame 35 rotates, it drives the rotating block 36 to slide along the surface of the limiting slide bar 37 and forces the compression spring 39 to be compressed. At this time, the angle between the limiting slide bar 37 and the cross bar 38 is deflected. Under the elastic force of the compression spring 39, the cross bar 38 slides to the other side of the arc groove opened on the inner wall of the ventilation shell 31, and at the same time drives the connecting plate 34 to move together. The connecting plate 34 drives the annular wind shield plate 33 to rotate in the ventilation shell 31, so that the holes opened on the surface of the annular wind shield plate 33 are misaligned with the holes opened on the surface of the ventilation shell 31, which can effectively prevent external dust, impurities, etc. from entering the interior of the ventilation device 3; the misaligned closing of the vent can reduce the moisture in the air from entering the interior of the motor body 1. Moisture may cause metal parts inside the motor body 1 to rust and corrode, affecting the electrical insulation performance and increasing the risk of failure of the motor body 1 .Explosion-proof motors are usually used in special environments and have higher requirements for moisture-proofing. Closing the vents can better protect the motor from moisture. When the motor body 1 is not working, closing the vents can prevent external foreign objects from accidentally entering the motor body 1 and causing safety hazards such as short circuits and sparks, further improving the safety of the motor body 1 when it is idle.

[0027] The blowing assembly 45 includes an air inlet shell 451, the inner wall of the air inlet shell 451 is fixedly connected with a hollow shell 452, the outer side of the hollow shell 452 is fixedly connected with a ventilation box 453, the inner wall of the air inlet shell 451 is fixedly connected with a guide rod 457, the outer wall of the guide rod 457 is slidably connected with a push plate 458, the outer side of the push plate 458 is fixedly connected with a return spring 459, the outer side of the air inlet shell 451 is fixedly connected to the outer side of the junction box 41, the inner wall of the junction box 41 is fixedly connected to the outer wall of the hollow shell 452, the outer wall of the ventilation box 453 is fixedly connected to the inner side of the junction box 41, the end of the return spring 459 away from the push plate 458 is fixedly connected to the inner wall of the air inlet shell 451, a ventilation hole 455 is provided in the wall of the ventilation box 453, and the hollow shell 452 is fixedly connected to the outer wall of the hollow shell 452. The inner wall is fixedly connected with a filter plate 454, and a sealing cover 456 is movably installed on the top of the air inlet shell 451 by bolt fixing. The outer side of the air inlet shell 451 is fixedly connected with the outer side of the ventilation shell 31. The blowing assembly 45 can provide cooling airflow for the terminal box 41. When the centrifugal fan 32 rotates, the airflow enters through the air inlet shell 451, and at the same time pushes the push plate 458 to slide on the guide rod 457, forcing the return spring 459 to be compressed. At this time, the airflow can pass through the filter plate 454 and enter the hollow shell 452. When there is no airflow passing through, the return spring 459 drives the push plate 458 to reset, which can isolate the outside air from contact with the filter plate 454, so as to effectively prevent impurities such as dust in the air from being slowly adsorbed onto the filter plate 454 under natural conditions. If the filter plate 454 is exposed to the air for a long time, dust will accumulate continuously, gradually reducing the filtering efficiency of the filter plate 454, increasing the resistance of the airflow, and affecting the normal operation of the cooling system; the filter plate 454 can block impurities such as dust, and the ventilation box 453 on the outside of the hollow shell 452 sends the cooling airflow into the junction box 41 through the ventilation hole 455. If impurities enter the junction box 41, they may adhere to the components such as the connector 44, affecting the quality of the electrical connection, and may even cause faults such as short circuits. The existence of the filter plate 454 ensures that the airflow entering the junction box 41 is clean, providing a good working environment for the electrical connection. When it is necessary to clean the impurities on the filter plate 454, the sealing cover 456 can be removed from the air inlet housing 451 by rotating the bolts on the sealing cover 456, and the impurities on the filter plate 454 can be cleaned at this time. Regular cleaning of impurities on the filter plate 454 can reduce the wear and corrosion of the filter plate 454 by impurities. The accumulation of impurities may cause the filter plate 454 to bear greater pressure under the action of the airflow, accelerating the damage of the filter plate 454. Timely cleaning of impurities can alleviate this pressure, extend the service life of the filter plate 454, and reduce the cost of replacing the filter plate 454.

[0028] The wire harness fixing assembly 46 includes a fixing cylinder 461, the inner side of which is slidably connected with a sliding ring 462, the outer side of which is fixedly connected with a threaded tube 463, the outer side of which is threadedly connected with a knob 464, the inner side of the sliding ring 462 is fixedly connected with an elastic fixing plate 466, the outer side of the elastic fixing plate 466 is fixedly connected with a triangular protrusion 467, the inner wall of the fixing cylinder 461 is fixedly connected with a limiting ring 465, the outer side of the fixing cylinder 461 is fixedly connected with the inner wall of the junction box 41, the outer wall of the junction box 41 is rotatably connected with the outer side of the knob 464, the outer wall of the triangular protrusion 467 is slidably connected with the outer wall of the limiting ring 465, and when the wire harness fixing assembly 46 is in use, the wire harness is passed through the fixing cylinder 461 and connected to the connector 44, and the elastic fixing plate 466 on the inner side of the sliding ring 462 can fix the wire harness. When the knob 464 is rotated, the threaded tube 463 drives the sliding ring 462 to slide in the fixed cylinder 461. At this time, the elastic fixing plate 466 can be elastically deformed through the contact between the limit ring 465 and the triangular protrusion 467, thereby adjusting the clamping force of the elastic fixing plate 466 on the wire harness. By adjusting the clamping force of the elastic fixing plate 466 on the wire harness, the wire harness can be effectively prevented from loosening or falling off due to vibration, external force and other factors during the operation of the motor body 1. The motor body 1 will generate certain vibrations during operation. If the wire harness is not well fixed, it may cause poor electrical connection and affect the normal operation of the motor body 1. Through the clamping force of the elastic fixing plate 466, it can be ensured that the wire harness always maintains a stable connection with the connector 44, and the elastic deformation of the elastic fixing plate 466 can also reduce the damage to the wire harness. By rotating the knob 464, the threaded tube 463 drives the sliding ring 462 to slide in the fixed cylinder 461, thereby adjusting the clamping force of the elastic fixing plate 466 on the wire harness. This design enables the harness fixing assembly 46 to adapt to harnesses of different diameters. Whether it is a thinner harness or a thicker harness, good fixation can be achieved by adjusting the clamping force, which improves the versatility and flexibility of the device and also makes the removal and installation of the harness more convenient.

[0029] Working principle: The device is mainly composed of a motor body 1, a mounting bracket 2, a threading device 4 and a ventilation device 3. The output end of the motor body 1 is connected to a drive shaft 5 to provide power for the entire device. The centrifugal fan 32 in the ventilation device 3 is fixedly connected to the drive shaft 5. When the motor is working, the drive shaft 5 drives the centrifugal fan 32 to rotate.

[0030] When the motor body 1 is in use, the centrifugal fan 32 rotates to generate airflow, which can cool the threading device 4. The electrical connection components such as the connector 44 in the threading device 4 will generate a certain amount of heat during the operation of the motor body 1. If the heat cannot be dissipated in time, it may cause the temperature of the connection part to be too high, affecting the stability and reliability of the electrical connection. The cooling airflow can effectively take away the heat, prevent the connector 44 and other components from overheating, and ensure the normal operation of the electrical connection. The ventilation shell 31 can provide an installation space and an airflow channel for the centrifugal fan 32, and the annular windshield 33 can control the opening and closing of the ventilation shell 31.

[0031] When the motor body 1 is not in use, the rotating frame 35 is rotated by toggling the handle 30. When the rotating frame 35 rotates, it drives the rotating block 36 to slide along the surface of the limiting slide bar 37 and forces the compression spring 39 to be compressed. At this time, the angle between the limiting slide bar 37 and the cross bar 38 is deflected. Under the elastic force of the compression spring 39, the cross bar 38 slides to the other side of the arc groove opened on the inner wall of the ventilation shell 31, and drives the connecting plate 34 to move together. The connecting plate 34 drives the annular wind shield plate 33 to rotate in the ventilation shell 31, so that the hole opened on the surface of the annular wind shield plate 33 is misaligned with the hole opened on the surface of the ventilation shell 31, which can effectively prevent external dust, impurities, etc. from entering the interior of the ventilation device 3; Closing the vents in an offset manner can reduce the amount of moisture in the air that enters the motor body 1. Moisture may cause the metal parts inside the motor body 1 to rust and corrode, affecting the electrical insulation performance and increasing the risk of failure of the motor body 1. Explosion-proof motors are usually used in special environments with higher requirements for moisture resistance. Closing the vents can better protect the motor from moisture. When the motor body 1 is not working, closing the vents can prevent foreign objects from entering the motor body 1 in unexpected situations, causing safety hazards such as short circuits and sparks, and further improve the safety of the motor body 1 when it is idle.

[0032] The junction box 41 in the threading device 4 is used to install the wiring connector 44 and other components. The cover plate 42 is rotatably connected to the junction box 41 through a hinge, and the elastic clamping plate 43 at the bottom is clamped with the inner side of the junction box 41 to ensure the sealing of the junction box 41 and prevent dust and water vapor from entering; The air blowing assembly 45 can provide cooling airflow for the junction box 41. When the centrifugal fan 32 rotates, the airflow enters through the air inlet shell 451, and at the same time pushes the push plate 458 to slide on the guide rod 457, forcing the return spring 459 to be compressed. At this time, the airflow can pass through the filter plate 454 and enter the hollow shell 452. When there is no airflow passing through, the return spring 459 drives the push plate 458 to reset, which can isolate the contact between the outside air and the filter plate 454. This can effectively prevent dust and other impurities in the air from being slowly adsorbed on the filter plate 454 in a natural state. If the filter plate 454 is exposed to the air for a long time, dust will continue to accumulate, gradually reducing the filtering efficiency of the filter plate 454, increasing the resistance of the airflow, and affecting the normal operation of the cooling system; The filter plate 454 can block impurities such as dust. The ventilation box 453 outside the hollow shell 452 sends the cooling airflow into the junction box 41 through the ventilation hole 455. If impurities enter the junction box 41, they may adhere to the connector 44 and other components, affecting the quality of the electrical connection and even causing faults such as short circuits. The existence of the filter plate 454 ensures that the airflow entering the junction box 41 is clean, providing a good working environment for the electrical connection.

[0033] When it is necessary to clean the impurities on the filter plate 454, the sealing cover 456 is removed from the air inlet housing 451 by rotating the bolts on the sealing cover 456, and the impurities on the filter plate 454 can be cleaned at this time. Regular cleaning of the impurities on the filter plate 454 can reduce the wear and corrosion of the impurities on the filter plate 454. The accumulation of impurities may cause the filter plate 454 to bear greater pressure under the action of the airflow, accelerating the damage of the filter plate 454. Timely cleaning of impurities can reduce this pressure, extend the service life of the filter plate 454, and reduce the cost of replacing the filter plate 454.

[0034] When the harness fixing assembly 46 is in use, the harness is passed through the fixing tube 461 and connected to the connector 44, and the elastic fixing plate 466 inside the sliding ring 462 can fix the harness. When the knob 464 is rotated, the threaded tube 463 drives the sliding ring 462 to slide in the fixing tube 461, and at this time, the elastic fixing plate 466 can be elastically deformed through the contact between the limit ring 465 and the triangular protrusion 467, thereby adjusting the clamping force of the elastic fixing plate 466 on the harness.

[0035] By adjusting the clamping force of the elastic fixing plate 466 on the wire harness, the wire harness can be effectively prevented from loosening or falling off due to factors such as vibration and external force during the operation of the motor body 1. The motor body 1 will generate certain vibrations during operation. If the wire harness is not well fixed, it may cause poor electrical connection and affect the normal operation of the motor body 1. The clamping force of the elastic fixing plate 466 can ensure that the wire harness always maintains a stable connection with the connector 44, and the elastic deformation of the elastic fixing plate 466 can also reduce damage to the wire harness.

[0036] By rotating the knob 464, the threaded tube 463 drives the sliding ring 462 to slide in the fixing tube 461, thereby adjusting the clamping force of the elastic fixing plate 466 on the wire harness. This design enables the wire harness fixing assembly 46 to adapt to wire harnesses of different diameters. Whether it is a thinner wire harness or a thicker wire harness, it can be well fixed by adjusting the clamping force, which improves the versatility and flexibility of the device, and also makes the removal and installation of the wire harness more convenient.

[0037] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A wiring device for explosion-proof motors, characterized in that: include: A motor body (1), wherein a mounting bracket (2) is fixedly connected to the bottom of the motor body (1), and a drive shaft (5) is fixedly connected to the output end of the motor body (1); A threading device (4), the threading device (4) being fixedly connected to the top of the motor body (1) by means of bolts, and the mounting bracket (2) being located directly below the threading device (4); A ventilation device (3), the ventilation device (3) being used to cool the threading device (4), the outer side of the ventilation device (3) being fixedly connected to the outer side of the motor body (1), and the end of the drive shaft (5) away from the motor body (1) passing through the ventilation device (3) and extending to the outer side of the ventilation device (3); The threading device (4) comprises a junction box (41), the top of the junction box (41) is rotatably connected to a cover plate (42) via a hinge, the bottom of the cover plate (42) is fixedly connected to an elastic clamping plate (43), the interior of the junction box (41) is fixedly connected to a connector (44), one side of the junction box (41) is fixedly connected to an air blowing assembly (45), and the other side of the junction box (41) is fixedly connected to a wiring harness fixing assembly (46); The ventilation device (3) comprises a ventilation shell (31), the inner side of which is rotatably connected to a centrifugal fan (32), the inner wall of which is slidably connected to an annular wind shield (33), the top of which is fixedly connected to a connecting plate (34), the top of which is rotatably connected to a cross bar (38), the outer wall of which is rotatably connected to a limiting slide bar (37), the outer wall of which is fixedly connected to a compression spring (39), the bottom end of which is fixedly connected to a rotating block (36), the outer side of which is rotatably connected to a rotating frame (35), and the outer side of which is fixedly connected to a handle (30).

2. The explosion-proof motor wiring device according to claim 1, characterized in that: The outer side of the ventilation shell (31) is fixedly connected to the outer side of the motor body (1), the center of the centrifugal fan (32) is fixedly connected to the outer wall of the drive shaft (5), and the two ends of the cross bar (38) are slidably connected to the inner wall of the ventilation shell (31) via limiting grooves.

3. The explosion-proof motor wiring device according to claim 1, characterized in that: The outer side of the rotating frame (35) is rotatably connected to the inner wall of the ventilation shell (31), the outer wall of the limiting sliding rod (37) is slidably connected to the inner side of the rotating block (36), and the handle (30) is located on the outer side of the ventilation shell (31).

4. The explosion-proof motor wiring device according to claim 1, characterized in that: The bottom of the terminal box (41) is fixedly connected to the top of the motor body (1), the outer side of the elastic clamping plate (43) is clamped to the inner side of the terminal box (41), and the side of the blowing assembly (45) away from the terminal box (41) is fixedly connected to the top of the ventilation shell (31).

5. The explosion-proof motor wiring device according to claim 1, characterized in that: The blowing assembly (45) comprises an air inlet shell (451), the inner wall of the air inlet shell (451) is fixedly connected to a hollow shell (452), the outer side of the hollow shell (452) is fixedly connected to a ventilation box (453), the inner wall of the air inlet shell (451) is fixedly connected to a guide rod (457), the outer wall of the guide rod (457) is slidably connected to a push plate (458), and the outer side of the push plate (458) is fixedly connected to a return spring (459).

6. The explosion-proof motor wiring device according to claim 5, characterized in that: The outer side of the air inlet housing (451) is fixedly connected to the outer side of the terminal box (41), the inner wall of the terminal box (41) is fixedly connected to the outer wall of the hollow housing (452), the outer wall of the ventilation box (453) is fixedly connected to the inner side of the terminal box (41), and one end of the return spring (459) away from the push plate (458) is fixedly connected to the inner wall of the air inlet housing (451).

7. The explosion-proof motor wiring device according to claim 5, characterized in that: A ventilation hole (455) is provided in the wall of the ventilation box (453); a filter plate (454) is fixedly connected to the inner wall of the hollow shell (452); a sealing cover (456) is movably mounted on the top of the air inlet shell (451) via bolts; and the outer side of the air inlet shell (451) is fixedly connected to the outer side of the ventilation shell (31).

8. The explosion-proof motor wiring device according to claim 1, characterized in that: The wire harness fixing assembly (46) comprises a fixing cylinder (461), the inner side of the fixing cylinder (461) is slidably connected to a sliding ring (462), the outer side of the sliding ring (462) is fixedly connected to a threaded tube (463), the outer side of the threaded tube (463) is threadedly connected to a knob (464), the inner side of the sliding ring (462) is fixedly connected to an elastic fixing plate (466), the outer side of the elastic fixing plate (466) is fixedly connected to a triangular protrusion (467), and the inner wall of the fixing cylinder (461) is fixedly connected to a limiting ring (465).

9. The explosion-proof motor wiring device according to claim 8, characterized in that: The outer side of the fixing cylinder (461) is fixedly connected to the inner wall of the junction box (41), the outer wall of the junction box (41) is rotatably connected to the outer side of the knob (464), and the outer wall of the triangular protrusion (467) is slidably connected to the outer wall of the limiting ring (465).

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