Coaxial direct connection type alternating current explosion-proof motor

Abstract

The invention discloses a coaxial direct connection type alternating current explosion-proof motor, and relates to the technical field of explosion-proof motors, the coaxial direct connection type alternating current explosion-proof motor comprises an explosion-proof shell and further comprises a sealing device, a dismounting rod is fixedly mounted in the explosion-proof shell, a dismounting frame is slidably mounted on the circumferential surface of the dismounting rod, and a calibration frame is fixedly mounted on the inner wall of the dismounting frame; a motor body is arranged in the explosion-proof shell, the sealing device comprises a sealing door, a sealing plate, a protection door, a protection frame, a limiting rod, a protection hole and a protection rod, after limiting of the sealing plate is relieved, the sealing door is manually pulled to move back to back to the protection door, and the sealing door and the protection door move back to back to relieve sealing of the explosion-proof shell; the calibration frame moves to drive the motor body to move to pop out the motor body, the sealing door is slidably installed on the front side of the anti-explosion shell, the motor body is prevented from being accidentally loosened due to manual mistaken touch through the protection rod, the motor body can be prevented from being loosened in the operation process, and therefore the overall stability of equipment is kept.

Description

Technical Field

[0001] The invention relates to the technical field of explosion-proof motors, in particular to a coaxial direct-connected AC explosion-proof motor. Background Art

[0002] Coaxial direct-coupled AC explosion-proof motors usually consist of explosion-proof casing, rotor, coaxial coupling and electrical connection box.

[0003] The patent with the patent announcement number CN220022496U relates to a coaxial direct-connected AC explosion-proof motor, including a support base, both sides of the top of the support base are provided with an anti-vibration mechanism, the top of the support base is provided with an explosion-proof motor body, the front side of the explosion-proof motor body is provided with a driving connection shaft, the front side of the explosion-proof motor body is welded with a connecting shell, and the surface of the driving connection shaft is provided with a connecting mechanism. The patent adopts a connecting shell, a driving connection shaft, a rotating ring, a movable mounting sleeve, a threaded sleeve, a limit plate, a movable sleeve, a supporting threaded rod, a positioning connecting plate and a mounting plate, which can facilitate the adjustment of the position of the mounting plate according to different situations, and adopts a fixed block, a positioning support rod, a damper, a sliding block, a buffer spring, a rotating connecting plate and a positioning rod, which can facilitate the anti-vibration effect and effectively prevent the explosion-proof motor body from vibrating violently.

[0004] In the above patent, by adopting fixed blocks, positioning support rods, dampers, sliding blocks, buffer springs, rotating connecting plates and positioning rods, it is possible to play an anti-vibration role and effectively prevent the explosion-proof motor body from vibrating violently. However, it is difficult to prevent accidental loosening caused by human error. Loosening of the motor body will make the motor run unstably and increase the risk of equipment failure or fire. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a coaxial direct-connected AC explosion-proof motor, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a coaxial direct-connected AC explosion-proof motor, comprising an explosion-proof shell and a sealing device, wherein a disassembly rod is fixedly installed inside the explosion-proof shell, a disassembly frame is slidably installed on the circumferential surface of the disassembly rod, a calibration frame is fixedly installed on the inner wall of the disassembly frame, a motor body is arranged inside the explosion-proof shell, wherein the sealing device comprises a sealing door, a sealing plate, a protective door, a protective frame, a limiting rod, a protective hole and a protective rod, after the limiting of the sealing plate is released, the sealing door and the protective door are manually pulled to move away from each other, and the sealing The sealing door and the protective door move away from each other to release the seal of the explosion-proof shell, and the movement of the calibration frame drives the motor body to move and pop out the motor body. The sealing door is slidably installed on the front side of the explosion-proof shell, and the sealing plate is fixedly installed on the side of the sealing door away from the disassembly rod. The protective door is slidably installed on the front side of the explosion-proof shell, and the protective frame is fixedly installed on the side of the protective door away from the disassembly rod. The limiting rod slides through the inner and outer walls of the protective frame, and the protective hole is opened on the circumferential surface of the limiting rod. The protective rod is slidably installed on the side of the protective frame away from the disassembly frame, and a sealing hole is opened on the surface of the sealing plate.

[0007] A No. 1 spring is arranged between the disassembly rod and the disassembly frame, and the No. 1 spring can drive the disassembly frame to reset. The motor body contacts the inner wall of the calibration frame, and the limit rod contacts the inner wall of the sealing hole.

[0008] According to the above technical solution, a No. 2 spring is arranged between the protection frame and the limiting rod, and the No. 2 spring can drive the limiting rod to reset, the protection rod contacts the inner wall of the protection hole, and the sealing door contacts the protection door.

[0009] According to the above technical scheme, the supporting device includes a T-shaped plate, a sliding rod, a hollow sliding frame, a placement rod, a T-shaped block, a placement frame and an extrusion plate. The T-shaped block moves downward due to the extrusion of the extrusion plate. The T-shaped block moves downward and contacts the inner wall of the placement frame. The T-shaped block contacts the inner wall of the placement frame to further assist in fixing the motor body. The T-shaped plate is fixedly installed on the top of the explosion-proof shell. The sliding rod slides through the front and rear walls of the T-shaped plate. The hollow sliding frame is fixedly installed at both ends of the sliding rod. The extrusion plate is fixedly installed on the side of the hollow sliding frame away from the sealing plate. The placement rod is fixedly installed on the top of the explosion-proof shell. The T-shaped block is slidably installed on the circumferential surface of the placement rod. The placement frame is fixedly installed on the circumferential surface of the motor body.

[0010] According to the above technical solution, a No. 3 spring is arranged between the T-shaped plate and the sliding rod, and the No. 3 spring can drive the sliding rod to reset. The side of the hollow sliding frame close to the sealing plate is set as an inclined surface, and the hollow sliding frame is in contact with the sealing door.

[0011] According to the above technical solution, a No. 4 spring is arranged between the placement rod and the T-shaped block, and the No. 4 spring can drive the T-shaped block to reset. The side of the extrusion plate close to the placement rod is set as an inclined surface, and the extrusion plate is in contact with the T-shaped block.

[0012] According to the above technical solution, the protective device includes a linkage rod, a U-shaped rod, a hollow frame, a stabilizing rod, a limit frame and a driving button. The hollow frame moves downward to drive the stabilizing rod to move downward. The stabilizing rod moves downward to press the driving button. The driving button is pressed by the stabilizing rod to drive the motor body to start working. The linkage rod is fixedly installed at the bottom of the T-shaped block, the U-shaped rod slides through the top of the explosion-proof shell, the hollow frame is slidably installed on the side of the U-shaped rod close to the motor body, the stabilizing rod is fixedly installed at the bottom of the hollow frame, the limit frame is fixedly installed on the top of the inner wall of the explosion-proof shell, the driving button is fixedly installed on the circumferential surface of the motor body, and the driving button is electrically connected to the motor body.

[0013] According to the above technical solution, a reset spring is arranged between the U-shaped rod and the explosion-proof shell, and the U-shaped rod can be reset by the reset spring. A No. 5 spring is arranged between the hollow frame and the U-shaped rod, and one end of the No. 5 spring is arranged on the surface of the U-shaped rod and the other end is arranged on the inner wall of the hollow frame. The hollow frame can be reset by the No. 5 spring, and the end of the stabilizing rod close to the T-shaped block is arranged as an inclined surface.

[0014] The present invention provides a coaxial direct-connected AC explosion-proof motor. It has the following beneficial effects: (1) When the coaxial direct-connected AC explosion-proof motor needs to be disassembled and repaired, the steps during installation are repeated. First, the protection rod is manually pulled to move. The protection rod moves out of contact with the protection hole and releases the limit on the limit rod. The protection rod prevents the motor body from accidentally loosening due to human error. It can prevent the motor body from loosening during operation, thereby maintaining the overall stability of the equipment and reducing the risk of mechanical failure or accident caused by loose motor body. The calibration frame is driven to move by the disassembly frame toward the sealing door. The movement of the calibration frame drives the motor body to move and eject the motor body. The motor body can be quickly disassembled and installed so that when the motor fails or is under maintenance, the motor body can be quickly disassembled and installed to speed up the fault repair process and reduce the interruption time of equipment operation.

[0015] (2) The coaxial direct-connected AC explosion-proof motor is moved downward by the extrusion plate through the T-shaped block, and the T-shaped block moves downward to squeeze the No. 4 spring. The No. 4 spring is squeezed by the T-shaped block to deform and store force. At the same time, the T-shaped block moves downward and contacts the inner wall of the placement frame. The T-shaped block contacts the inner wall of the placement frame to further assist in fixing the motor body. The auxiliary fixation design can prevent the motor body from shifting during installation, and the secondary fixation can effectively reduce the vibration and displacement of the motor body during operation, provide additional stability, and avoid damage or performance degradation caused by vibration or external force.

[0016] (3) The coaxial direct-coupled AC explosion-proof motor is designed so that the hollow frame is no longer limited by the limit frame by disengaging the contact between the hollow frame and the limit frame. The downward movement of the hollow frame drives the stabilizing rod to move downward, and the downward movement of the stabilizing rod presses the driving button. The driving button is pressed by the stabilizing rod to drive the motor body to start working. The motor can be started only after the stable installation of the motor body is detected, thereby avoiding startup failure or abnormality caused by installation position offset. In addition, unstable installation will cause excessive stress on the bearings or couplings of the motor body, affecting the normal operation of the equipment. Stable installation can reduce the stress of the motor body and its related components, reduce the failure rate of the equipment, and thus extend the service life of the motor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the explosion-proof housing of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement of part A; Figure 4 For the present invention Figure 2 A schematic diagram of the structure of part B in the middle is enlarged; Figure 5 This is a schematic diagram of the position structure of the sealing door and the sealing plate of the present invention; Figure 6 For the present invention Figure 5 The enlarged schematic diagram of the structure of part C in the middle; Figure 7 It is a schematic diagram of the position structure of the T-shaped plate and the sliding rod of the present invention.

[0018] In the figure: 1. explosion-proof shell; 2. disassembly rod; 3. disassembly frame; 4. calibration frame; 5. motor body; 6. sealing door; 7. sealing plate; 8. protection door; 9. protection frame; 10. limit rod; 11. protection hole; 12. protection rod; 131. T-shaped plate; 132. sliding rod; 133. hollow sliding frame; 134. placement rod; 135. T-shaped block; 136. placement frame; 137. extrusion plate; 141. linkage rod; 142. U-shaped rod; 143. hollow frame; 144. stabilizing rod; 145. limit frame; 146. driving button; 147. reset spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 3 An embodiment of the present invention is: a coaxial direct-connected AC explosion-proof motor, comprising an explosion-proof shell 1, and also comprising a sealing device, wherein a disassembly rod 2 is fixedly installed inside the explosion-proof shell 1, a disassembly frame 3 is slidably installed on the circumferential surface of the disassembly rod 2, a calibration frame 4 is fixedly installed on the inner wall of the disassembly frame 3, and a motor body 5 is arranged inside the explosion-proof shell 1, wherein the sealing device comprises a sealing door 6, a sealing plate 7, a protective door 8, a protective frame 9, a limiting rod 10, a protective hole 11 and a protective rod 12, after the limiting of the sealing plate 7 is released, the sealing door 6 is manually pulled to move away from the protective door 8, the sealing door 6 is slidably installed on the front side of the explosion-proof shell 1, the sealing plate 7 is fixedly installed on the side of the sealing door 6 away from the disassembly rod 2, and the protective door 8 slides It is installed on the front side of the explosion-proof shell 1, and the protection frame 9 is fixedly installed on the side of the protection door 8 away from the disassembly rod 2. The limiting rod 10 slides through the inner and outer walls of the protection frame 9, and the protection hole 11 is opened on the circumferential surface of the limiting rod 10. The protection rod 12 is slidably installed on the side of the protection frame 9 away from the disassembly frame 3. A sealing hole is opened on the surface of the sealing plate 7. The protection rod 12 prevents the motor body 5 from accidentally loosening due to human error, and can prevent the motor body 5 from loosening during operation, thereby maintaining the overall stability of the equipment. The motor body 5 can be quickly disassembled and installed so that when the motor body 5 fails or is under maintenance, the motor body 5 can be quickly disassembled and installed to speed up the fault repair process and reduce the interruption time of equipment operation.

[0021] A No. 1 spring is arranged between the disassembly rod 2 and the disassembly frame 3, and the No. 1 spring can drive the disassembly frame 3 to reset, the motor body 5 contacts the inner wall of the calibration frame 4, and the limit rod 10 contacts the inner wall of the sealing hole.

[0022] A No. 2 spring is provided between the protection frame 9 and the limiting rod 10 , and the No. 2 spring can drive the limiting rod 10 to reset, the protection rod 12 contacts the inner wall of the protection hole 11 , and the sealing door 6 contacts the protection door 8 .

[0023] When this embodiment is working: when the motor body 5 needs to be installed, first manually pull the protection rod 12 to move away from the limit rod 10, the protection rod 12 moves in the direction away from the limit rod 10 to break away from the contact with the protection hole 11 and release the limit on the limit rod 10, after the limit of the limit rod 10 is released, manually pull the limit rod 10 to move in the direction away from the explosion-proof shell 1, the limit rod 10 moves to squeeze the No. 2 spring, the No. 2 spring is squeezed by the limit rod 10 to produce deformation and accumulate force, and at the same time, the limit rod 10 moves in the direction away from the explosion-proof shell 1 to break away from the contact with the sealing hole, the limit rod 10 breaks away from the contact with the sealing hole and releases the limit on the sealing plate 7, after the limit of the sealing plate 7 is released, manually pull The sealing door 6 and the protective door 8 move opposite to each other, and the sealing door 6 and the protective door 8 move opposite to each other to release the sealing of the explosion-proof shell 1. After the sealing of the explosion-proof shell 1 is released, the motor body 5 is aligned with the calibration frame 4 and placed inside the explosion-proof shell 1. The explosion-proof motor is placed inside the explosion-proof shell 1 and contacts the inner wall of the calibration frame 4 and squeezes the disassembly frame 3. The disassembly frame 3 is squeezed by the motor body 5 and moves in the direction away from the sealing door 6. The disassembly frame 3 moves in the direction away from the sealing door 6 to squeeze the No. 1 spring. The No. 1 spring is squeezed by the disassembly frame 3 to produce deformation and accumulate force. After the motor body 5 is installed, the sealing door 6 and the protective door 8 are manually pushed to move toward each other. The sealing door 6 and the protective door 8 move toward each other so that the limit rod 10 Under the elastic force of the No. 2 spring, it moves toward the direction close to the motor body 5, and the limit rod 10 moves toward the direction close to the motor body 5 to contact the sealing hole and restore the limit on the sealing plate 7. When the limit rod 10 restores the limit on the sealing plate 7, the sealing door 6 and the protective door 8 restore the sealing of the explosion-proof shell 1 and complete the installation of the motor body 5. At the same time, when the motor body 5 needs to be disassembled and repaired, repeat the above-mentioned installation steps, first manually pull the protective rod 12 to move away from the limit rod 10, the protective rod 12 moves away from the limit rod 10 to break away from the contact with the protective hole 11 and release the limit on the limit rod 10, and after the limit of the limit rod 10 is released, manually pull the limit rod 10 to move away from the explosion-proof shell The limit rod 10 moves in the direction of the explosion-proof shell 1, and moves away from the explosion-proof shell 1 to break away from the contact with the sealing hole. The limit rod 10 breaks away from the contact with the sealing hole and releases the limit on the sealing plate 7. After the limit of the sealing plate 7 is released, the sealing door 6 and the protective door 8 are manually pulled to move away from each other. The sealing door 6 and the protective door 8 move away from each other to release the sealing of the explosion-proof shell 1. At the same time, the sealing door 6 and the protective door 8 move away from each other to release the limit on the motor body 5. After the limit of the motor body 5 is released, the disassembly frame 3 moves toward the sealing door 6 under the elastic force of spring No. 1. The disassembly frame 3 moves toward the sealing door 6 and drives the calibration frame 4 to move. The calibration frame 4 moves and drives the motor body 5 to move and eject the motor body 5.

[0024] See also Figure 1-Figure 7On the basis of the above embodiment, another embodiment of the present invention further includes a supporting device and a protective device, the supporting device includes a T-shaped plate 131, a sliding rod 132, a hollow sliding frame 133, a placement rod 134, a T-shaped block 135, a placement frame 136 and an extrusion plate 137, the T-shaped plate 131 is fixedly installed on the top of the explosion-proof shell 1, the sliding rod 132 slides through the front and rear walls of the T-shaped plate 131, the hollow sliding frame 133 is fixedly installed at both ends of the sliding rod 132, the extrusion plate 137 is fixedly installed on the side of the hollow sliding frame 133 away from the sealing plate 7, the placement rod 134 is fixedly installed on the top of the explosion-proof shell 1, the T-shaped block 135 is slidably installed on the circumferential surface of the placement rod 134, and the placement frame 136 is fixedly installed on the circumferential surface of the motor body 5. The secondary fixation can effectively reduce the vibration and displacement of the motor body 5 during operation, provide additional stability, and avoid damage or performance degradation caused by vibration or external force.

[0025] A No. 3 spring is arranged between the T-shaped plate 131 and the sliding rod 132 , and the No. 3 spring can drive the sliding rod 132 to reset. The side of the hollow sliding frame 133 close to the sealing plate 7 is set as an inclined surface, and the hollow sliding frame 133 is in contact with the sealing door 6 .

[0026] A No. 4 spring is arranged between the placement rod 134 and the T-shaped block 135 , and the No. 4 spring can drive the T-shaped block 135 to reset. The side of the squeezing plate 137 close to the placement rod 134 is set as an inclined surface, and the squeezing plate 137 is in contact with the T-shaped block 135 .

[0027] The protective device includes a linkage rod 141, a U-shaped rod 142, a hollow frame 143, a stabilizing rod 144, a limit frame 145 and a driving button 146. The linkage rod 141 is fixedly installed at the bottom of the T-shaped block 135, the U-shaped rod 142 slides through the top of the explosion-proof shell 1, the hollow frame 143 is slidably installed on the side of the U-shaped rod 142 close to the motor body 5, the stabilizing rod 144 is fixedly installed at the bottom of the hollow frame 143, the limit frame 145 is fixedly installed on the top of the inner wall of the explosion-proof shell 1, and the driving button 146 is fixedly installed on the circumferential surface of the motor body 5. The driving button 146 is electrically connected to the motor body 5. The motor body 5 can be started only after it is detected that the motor body 5 is stably installed, thereby avoiding startup failure or abnormality caused by offset of the installation position.

[0028] A reset spring 147 is arranged between the U-shaped rod 142 and the explosion-proof shell 1, and the U-shaped rod 142 can be reset by the reset spring 147. A No. 5 spring is arranged between the hollow frame 143 and the U-shaped rod 142. One end of the No. 5 spring is arranged on the surface of the U-shaped rod 142 and the other end is arranged on the inner wall of the hollow frame 143. The hollow frame 143 can be reset by the No. 5 spring, and the end of the stabilizing rod 144 close to the T-shaped block 135 is arranged as an inclined surface.

[0029] When the present embodiment is working, the sealing door 6 and the protection door 8 move toward each other and contact and squeeze the hollow sliding frame 133. The hollow sliding frame 133 is squeezed by the sealing door 6 and the protection door 8 and moves toward the direction close to the placement rod 134. The hollow sliding frame 133 moves toward the direction close to the placement rod 134, driving the sliding rod 132 to move. The sliding rod 132 moves to squeeze the No. 3 spring. The No. 3 spring is squeezed by the sliding rod 132 to produce deformation and accumulate force. At the same time, the sliding rod 132 moves toward the placement rod 1 The movement in the direction of 34 drives the extrusion plate 137 to move, and the extrusion plate 137 moves to contact with the T-shaped block 135 and squeezes the T-shaped block 135. The T-shaped block 135 is squeezed by the extrusion plate 137 and moves downward. The T-shaped block 135 moves downward to squeeze the No. 4 spring. The No. 4 spring is squeezed by the T-shaped block 135 and deforms and accumulates force. At the same time, the T-shaped block 135 moves downward and contacts the inner wall of the placement frame 136. The T-shaped block 135 contacts the inner wall of the placement frame 136 to further assist in fixing the motor body 5.

[0030] The T-shaped block 135 is squeezed downward by the squeezing plate 137, and the T-shaped block 135 moves downward to drive the linkage rod 141 to move downward. The linkage rod 141 moves downward to contact the stabilizing rod 144 and squeezes the stabilizing rod 144. The stabilizing rod 144 is squeezed by the linkage rod 141 and moves in a direction away from the squeezing plate 137. The stabilizing rod 144 moves in a direction away from the squeezing plate 137 and drives the hollow frame 143 to move in a direction away from the squeezing plate 137. The hollow frame 143 moves in a direction away from the squeezing plate 137 to squeeze the No. 5 spring. The No. 5 spring is squeezed by the hollow frame 143 to produce deformation and accumulate force. At the same time, the hollow frame 143 moves away from the squeezing plate 137. The U-shaped rod 142 moves downward to squeeze the return spring 147, and the return spring 147 is squeezed by the U-shaped rod 142 to deform and accumulate force. At the same time, the U-shaped rod 142 moves downward to drive the hollow frame 143 to move downward, and the hollow frame 143 moves downward to drive the stabilizing rod 144 to move downward. The stabilizing rod 144 moves downward to press the driving button 146, and the driving button 146 is pressed by the stabilizing rod 144 to drive the motor body 5 to start working.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coaxial direct-connected AC explosion-proof motor, comprising an explosion-proof housing (1), characterized in that: It also includes sealing devices, supporting devices and protective devices; A disassembly rod (2) is fixedly installed inside the explosion-proof shell (1), a disassembly frame (3) is slidably installed on the circumferential surface of the disassembly rod (2), a calibration frame (4) is fixedly installed on the inner wall of the disassembly frame (3), and a motor body (5) is arranged inside the explosion-proof shell (1); The sealing device comprises a sealing door (6), a sealing plate (7), a protective door (8), a protective frame (9), a limiting rod (10), a protective hole (11) and a protective rod (12); the sealing door (6) is slidably mounted on the front side of the explosion-proof shell (1); the sealing plate (7) is fixedly mounted on a side of the sealing door (6) away from the disassembly rod (2); the protective door (8) is slidably mounted on the front side of the explosion-proof shell (1); the protective frame (9) is fixedly mounted on a side of the protective door (8) away from the disassembly rod (2); the limiting rod (10) slidably penetrates the inner and outer walls of the protective frame (9); the protective hole (11) is formed on the circumferential surface of the limiting rod (10); the protective rod (12) is slidably mounted on a side of the protective frame (9) away from the disassembly frame (3); and a sealing hole is formed on the surface of the sealing plate (7).

2. The coaxial direct-connected AC explosion-proof motor according to claim 1, characterized in that: A No. 1 spring is provided between the disassembly rod (2) and the disassembly frame (3), the motor body (5) contacts the inner wall of the calibration frame (4), and the limit rod (10) contacts the inner wall of the sealing hole.

3. The coaxial direct-connected AC explosion-proof motor according to claim 2, characterized in that: A No. 2 spring is provided between the protection frame (9) and the limiting rod (10), the protection rod (12) is in contact with the inner wall of the protection hole (11), and the sealing door (6) is in contact with the protection door (8).

4. The coaxial direct-connected AC explosion-proof motor according to claim 3 is characterized in that: The supporting device comprises a T-shaped plate (131), a sliding rod (132), a hollow sliding frame (133), a placement rod (134), a T-shaped block (135), a placement frame (136) and an extrusion plate (137); the T-shaped plate (131) is fixedly mounted on the top of the explosion-proof shell (1); the sliding rod (132) slides through the front and rear walls of the T-shaped plate (131); the hollow sliding frame (133) is fixedly mounted on both ends of the sliding rod (132); the extrusion plate (137) is fixedly mounted on a side of the hollow sliding frame (133) away from the sealing plate (7); the placement rod (134) is fixedly mounted on the top of the explosion-proof shell (1); the T-shaped block (135) is slidably mounted on the circumferential surface of the placement rod (134); and the placement frame (136) is fixedly mounted on the circumferential surface of the motor body (5).

5. The coaxial direct-connected AC explosion-proof motor according to claim 4, characterized in that: A No. 3 spring is provided between the T-shaped plate (131) and the sliding rod (132); a side of the hollow sliding frame (133) close to the sealing plate (7) is provided as an inclined surface; and the hollow sliding frame (133) is in contact with the sealing door (6).

6. The coaxial direct-connected AC explosion-proof motor according to claim 5, characterized in that: A No. 4 spring is provided between the placement rod (134) and the T-shaped block (135); a side of the pressing plate (137) close to the placement rod (134) is provided as an inclined surface; and the pressing plate (137) is in contact with the T-shaped block (135).

7. The coaxial direct-connected AC explosion-proof motor according to claim 6, characterized in that: The protective device comprises a linkage rod (141), a U-shaped rod (142), a hollow frame (143), a stabilizing rod (144), a limiting frame (145) and a driving button (146); the linkage rod (141) is fixedly mounted on the bottom of the T-shaped block (135); the U-shaped rod (142) slides through the top of the explosion-proof shell (1); the hollow frame (143) is slidably mounted on a side of the U-shaped rod (142) close to the motor body (5); the stabilizing rod (144) is fixedly mounted on the bottom of the hollow frame (143); the limiting frame (145) is fixedly mounted on the top of the inner wall of the explosion-proof shell (1); and the driving button (146) is fixedly mounted on the circumferential surface of the motor body (5); and the driving button (146) is electrically connected to the motor body (5).

8. The coaxial direct-connected AC explosion-proof motor according to claim 7, characterized in that: A return spring (147) is provided between the U-shaped rod (142) and the explosion-proof shell (1), a No. 5 spring is provided between the hollow frame (143) and the U-shaped rod (142), and one end of the stabilizing rod (144) close to the T-shaped block (135) is provided as an inclined surface.

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