Protective transformer

Abstract

The invention relates to the technical field of electrical equipment, and provides a protective transformer which comprises an outer box body, the bottom of the outer box body is fixedly connected with a mounting base, the front end of the outer box body is provided with a box door, the top of the outer box body is fixedly connected with a ceiling, and the top of the outer box body is provided with a draft fan. A dustproof net and a cleaning mechanism are arranged on the side face of the outer box body, a protective shell mechanism is arranged in the outer box body, and therefore electric devices can be better protected in the protective shell and the inner box body through multi-layer arrangement of the protective shell and the inner box body; meanwhile, the inner box body can be limited through cooperation of components such as a clamping groove, a magnetic block and a clamping block, so that the inner box body is not prone to shaking, when electric parts in the inner box body need to be mounted and dismounted, a pull rod is pulled downwards, and the inner box body can be automatically popped out of the protective shell so as to facilitate operation of workers.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and in particular to a protective transformer. Background Art

[0002] A power transformer is a static electrical device that is used to convert a certain value of AC voltage (current) into another or several different values ​​of voltage (current) with the same frequency. When AC is passed through the primary winding, an alternating magnetic flux is generated. The alternating magnetic flux induces an AC electromotive force in the secondary winding through the magnetic conduction of the iron core. The level of the secondary induced electromotive force is related to the number of turns of the secondary winding, that is, the voltage is proportional to the number of turns. The main function is to transmit electric energy, so the rated capacity is its main parameter. The rated capacity is a conventional value that represents power. It is a characterization of the size of the transmitted electric energy, expressed in kVA or MVA. When the rated voltage is applied to the transformer, it is used to determine the rated current that does not exceed the temperature rise limit under specified conditions. The more energy-saving power transformer is the amorphous alloy core distribution transformer, whose biggest advantage is that the no-load loss value is extremely low. Whether the no-load loss value can be guaranteed in the end is the core issue to be considered in the entire design process. When arranging the product structure, in addition to considering that the amorphous alloy core itself is not affected by external forces, the characteristic parameters of the amorphous alloy must also be accurately and reasonably selected during calculation.

[0003] The patent document with publication number CN209896499U discloses a double-layer protective safety box transformer, including: an outer box, a rain shield, and a support rod; a rain shield is provided at the top of the outer box, and the rain shield is connected to the outer box through the support rod; covers are provided at both ends of the rain shield, and the covers are connected to the rain shield by bolts; mounting seats are provided on both sides of the bottom of the outer box, and the mounting seats are connected to the outer box by welding; a ventilation hole is provided on one side of the lower part of the outer box The outer box body has a rain shield and a dust screen on the inner side thereof, and the dust screen is connected to the outer box body by sliding. Two inner boxes are arranged inside the outer box body. The above-mentioned application document is located at the four corners of the inner box body through a slide, and the cross-section of the slide is L-shaped. The inner box body can be pulled out through the slide, which is convenient for separate maintenance of the transformer equipment in the box body. However, the limiting effect on the inner box body is poor, and it is easy to shake during use, and the overall safety protection is poor. Summary of the invention

[0004] The present invention provides a protective transformer, which solves the problems raised in the above documents.

[0005] The technical solution of the present invention is as follows: a protective transformer comprises an outer box body, the bottom of the outer box body is fixedly connected to a mounting base, the front end of the outer box body is provided with a box door, the top of the outer box body is fixedly connected to a ceiling, the top of the outer box body is provided with an exhaust fan, the side of the outer box body is provided with a dustproof net and a cleaning mechanism, the interior of the outer box body is provided with a protective shell mechanism, and the top of the inner part of the outer box body is provided with a deceleration mechanism; the protective shell mechanism comprises a protective shell and a slide cylinder, the protective shell is fixedly connected to the interior of the outer box body, the rear end of the interior of the protective shell is provided with a compression spring, the interior of the protective shell is slidably connected to the inner box body through the compression spring, and the bottom of the inner box body is opened A card slot is provided, a magnetic block is fixedly connected inside the card slot, the bottom of the slide is fixedly connected to the inner bottom of the outer box, a telescopic spring is provided inside the slide, a card block is slidably connected inside the slide via the telescopic spring, a pull rod is fixedly connected to the bottom of the card block, and a protective shell mechanism is provided to achieve a multi-layer setting of a protective shell and an inner box, so that the electrical components can be better protected therein, and at the same time, the inner box can be limited by the cooperation of components such as the card slot, the magnetic block, and the card block, so that it is not easy to shake, and when the electrical components in the inner box need to be installed or disassembled, the pull rod is pulled downward, and the inner box will automatically pop out of the protective shell to facilitate the operation of the staff.

[0006] The pull rod penetrates and is slidably connected to the bottom of the outer box body, the depth inside the slide is greater than the length of the block, and pulling the pull rod downward can drive the block to move downward, leave the slot and completely retract into the slide.

[0007] The material of the card block is ferromagnetic stainless steel, and the top of the card block is initially fitted with the bottom of the magnetic block. When the card slot and the slide barrel are in corresponding positions, the magnetic force of the magnetic block will attract the card block to fit with them.

[0008] The material of the protective shell is rubber. The compression spring is in a compressed state in the initial state. The rubber protective shell can reduce the impact force transmitted to the inner box when the outer box is impacted. When the compression spring rebounds, it will drive the inner box to move toward the outer end of the protective shell.

[0009] The deceleration mechanism includes a connecting frame, a limiting rod and a deceleration block. The top of the connecting frame and the limiting rod are fixedly connected to the inner top of the outer box body. The inner side of the connecting frame is rotatably connected to a rotating rod. Torsion springs are provided at both ends of the rotating rod. A contact block is fixedly connected to the middle end of the rotating rod. The bottom of the deceleration block is fixedly connected to the top of the inner box body. By providing a deceleration mechanism, the speed of the inner box body when it pops out of the protective shell can be slowed down through the cooperation of components such as the rotating rod, the torsion spring, the contact block, and the deceleration block, so as to prevent the inner box body from popping out of the protective shell at too fast a speed and causing shock and damage to the electrical components thereon, thereby further improving the overall stability. The inner box body will not be greatly affected when pushed back.

[0010] In the initial state, the bottom of the contact block is close to the top of the speed reduction block, and the end of the limiting rod away from the top of the inner part of the outer box is close to the front end of the contact block. When the inner box drives the speed reduction block to move toward the front end or the rear end, it will drive the speed reduction block to contact the bottom of the contact block, and the limiting rod can limit the deflection of the contact block toward the front end.

[0011] The deceleration block is semi-cylindrical in shape as a whole, and is made of rubber. When the semi-cylindrical rubber deceleration block is squeezed with the contact block, a large resistance will be generated.

[0012] The cleaning mechanism includes a fixed block, a rotating shaft and a gear rod B, the fixed block is fixedly connected to the side of the outer box body, the front end of the fixed block is fixedly connected to a sliding rod, the surface of the sliding rod is slidably connected to a cleaning brush, the surface of the sliding rod is sleeved with a return spring, the side of the cleaning brush is fixedly connected to a gear rod A, the rotating shaft passes through and is rotatably connected to the side of the outer box body, the two ends of the rotating shaft are respectively fixedly connected to a main gear and a slave gear, and the gear rod B is fixedly connected to the side of the inner box body. By providing a cleaning mechanism, the cleaning brush can be driven to move back and forth several times through the cooperation of components such as the gear rod B, the main gear, the rotating shaft, and the slave gear during the process of the inner box body popping out of the protective shell. When the cleaning brush moves back and forth several times, its bristles will clean the outer surface of the dustproof net to prevent the outer surface of the dustproof net from being blocked by dust and fluff under long-term use, affecting heat dissipation.

[0013] The upper teeth of the main gear mesh with the upper teeth of the gear rod B, and the upper teeth of the slave gear mesh with the upper teeth of the gear rod A. When the gear rod B moves, it meshes with the upper teeth of the main gear, which drives the main gear to rotate. The slave gear rotates and its upper teeth mesh with the upper teeth of the gear rod A, which drives the gear rod A to move toward the front end.

[0014] The slave gear is an incomplete gear, and the two ends of the reset spring are fixedly connected to the fixed block and the cleaning brush respectively. When the slave gear rotates to the toothless part, it will disengage from the gear rod A, and when the cleaning brush moves to the front end, the reset spring will be stretched.

[0015] The working principle and beneficial effects of the present invention are: 1. The present invention is provided with a protective shell mechanism, thereby achieving a multi-layer setting of a protective shell and an inner box, so that the electrical components can be better protected therein, and at the same time, the inner box can be limited by the cooperation of components such as card slots, magnetic blocks, and card blocks to prevent it from shaking easily. When it is necessary to install or disassemble the electrical components in the inner box, the pull rod is pulled downward, and the inner box will automatically pop out of the protective shell to facilitate the operation of the staff.

[0016] 2. The present invention is provided with a deceleration mechanism, so that the speed of the inner box body when it pops out of the protective shell can be slowed down through the cooperation of components such as the rotating rod, the torsion spring, the contact block, and the deceleration block, thereby preventing the inner box body from popping out of the protective shell too fast and causing shock to damage the electrical components thereon, further improving the overall stability, and the inner box body will not be greatly affected when being pushed back.

[0017] 3. The present invention is provided with a cleaning mechanism, so that in the process of the inner box body popping out of the protective shell, the cleaning brush will be driven to move back and forth several times through the cooperation of components such as the gear rod B, the main gear, the rotating shaft, and the slave gear. When the cleaning brush moves back and forth several times, its bristles will clean the outer surface of the dustproof net to prevent the outer surface of the dustproof net from being blocked by dust and fluff under long-term use, affecting heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 It is a three-dimensional cross-sectional view of the overall structure of the present invention; Figure 3 It is a three-dimensional cross-sectional view of a part of the structure of the present invention; Figure 4 It is a three-dimensional cross-sectional view of the overall structure of the protective shell mechanism of the present invention; Figure 5 It is a three-dimensional schematic diagram of the partial structure of the protective housing mechanism of the present invention; Figure 6 A three-dimensional cross-sectional view of a partial structure of the protective housing mechanism of the present invention; Figure 7 For the present invention Figure 6 A three-dimensional magnified view of the structure; Figure 8 It is a three-dimensional schematic diagram of the structure of the deceleration mechanism of the present invention; Fig. 9 It is a three-dimensional schematic diagram of the cleaning mechanism structure of the present invention.

[0020] In the figure: 1. outer box; 2. mounting base; 3. box door; 4. ceiling; 5. exhaust fan; 6. dust screen; 7. protective shell mechanism; 71. protective shell; 72. compression spring; 73. inner box; 74. slot; 75. magnet; 76. slide cylinder; 77. telescopic spring; 78. block; 79. pull rod; 8. deceleration mechanism; 81. connecting frame; 82. rotating rod; 83. torsion spring; 84. contact block; 85. limiting rod; 86. deceleration block; 9. cleaning mechanism; 91. fixing block; 92. sliding rod; 93. cleaning brush; 94. reset spring; 95. gear rod A; 96. rotating shaft; 97. main gear; 98. slave gear; 99. gear rod B. DETAILED DESCRIPTION

[0021] The following will be combined with 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.

[0022] Example 1 like Figures 1 to 8As shown, the present embodiment proposes a protective transformer, including an outer box body 1, a mounting base 2 is fixedly connected to the bottom of the outer box body 1, a box door 3 is arranged at the front end of the outer box body 1, a ceiling 4 is fixedly connected to the top of the outer box body 1, an exhaust fan 5 is arranged at the top of the outer box body 1, a dust screen 6 and a cleaning mechanism 9 are arranged on the side of the outer box body 1, a protective shell mechanism 7 is arranged inside the outer box body 1, and a deceleration mechanism 8 is arranged at the top of the inner part of the outer box body 1; the protective shell mechanism 7 includes a protective shell 71 and a slide cylinder 76, the protective shell 71 is fixedly connected to the inside of the outer box body 1, and a compression spring 72 is arranged at the rear end of the inner part of the protective shell 71, and the inner part of the protective shell 71 is slidably connected to the outer box body 1 through the compression spring 72. The inner box body 73 is connected, and the material of the protective shell 71 is rubber. The compression spring 72 is in a compressed state in the initial state. The protective shell 71 made of rubber can reduce the impact force transmitted to the inner box body 73 when the outer box body 1 is impacted. When the compression spring 72 rebounds, it will drive the inner box body 73 to move toward the outer end of the protective shell 71. A card slot 74 is provided at the bottom of the inner box body 73. A magnetic block 75 is fixedly connected to the inside of the card slot 74. The bottom of the slide 76 is fixedly connected to the inner bottom of the outer box body 1. A telescopic spring 77 is provided inside the slide 76. A card block 78 is slidably connected to the inside of the slide 76 through the telescopic spring 77. The material of the card block 78 is stainless steel with ferromagnetism, and the card block The top of 78 is in contact with the bottom of magnet 75 in the initial state. When the slot 74 and slide 76 are in corresponding positions, the magnetic force of magnet 75 will attract block 78 to fit with it. The bottom of block 78 is fixedly connected with a pull rod 79. The pull rod 79 penetrates and is slidably connected to the bottom of the outer box body 1. The depth inside the slide 76 is greater than the length of block 78. Pulling the pull rod 79 downward can drive block 78 to move downward, leave the slot 74 and completely retract into the slide 76. The deceleration mechanism 8 includes a connecting frame 81, a limiting rod 85 and a deceleration block 86. The top of the connecting frame 81 and the limiting rod 85 are fixedly connected to the inner top of the outer box body 1. The inner side of the connecting frame 81 is rotatably connected with a rotating rod 82. Torsion springs 83 are provided at both ends, and a contact block 84 is fixedly connected to the middle end of the rotating rod 82. The bottom of the speed reduction block 86 is fixedly connected to the top of the inner box body 73. In the initial state, the bottom of the contact block 84 is close to the top of the speed reduction block 86, and the end of the limiting rod 85 away from the top of the inner part of the outer box body 1 is close to the front end of the contact block 84. When the inner box body 73 drives the speed reduction block 86 to move to the front end or the rear end, it will drive the speed reduction block 86 to contact the bottom of the contact block 84. The limiting rod 85 can limit the deflection of the contact block 84 toward the front end. The speed reduction block 86 is semi-cylindrical as a whole, and the material of the speed reduction block 86 is rubber. When the semi-cylindrical rubber speed reduction block 86 is squeezed with the contact block 84, it will generate greater resistance.

[0023] When the outer box 1 is pressed against the outer casing 73, the outer casing 73 is pressed against the outer casing 73, and the outer casing 73 is pressed against the outer casing 73. When the outer box 1 is pressed against the outer casing 73, the outer casing 73 is pressed against the outer casing 73, and the outer casing 73 is pressed against the outer casing 73. When the outer box 1 is pressed against the outer casing 73, the outer casing 73 is pressed against the outer casing 73, and the outer casing 73 is pressed against the outer casing 73. When the outer box 1 is pressed against the outer casing 73, the outer casing 73 is pressed against the outer casing 73, and the outer casing 73 is pressed against the outer casing 73. When the outer casing 73 is pressed against the outer casing 73, the outer casing 73 is pressed against the outer casing 73, and the outer casing 73 is pressed against the outer casing 73. When the locking cam 74 is in the unlocking state, the locking cam 86 is in the unlocking state, and the locking cam 86 is in the unlocking state, so that the locking cam 86 is locked and the locking cam 86 is locked.

[0024] Example 2 like Figures 1 to 9As shown, based on the same concept as the above-mentioned embodiment 1, a second embodiment is also proposed, the cleaning mechanism 9 includes a fixed block 91, a rotating shaft 96 and a gear rod B99, the fixed block 91 is fixedly connected to the side of the outer box body 1, the front end of the fixed block 91 is fixedly connected to a slide bar 92, the surface of the slide bar 92 is slidably connected to a cleaning brush 93, the surface of the slide bar 92 is sleeved with a return spring 94, the side of the cleaning brush 93 is fixedly connected to a gear rod A95, the rotating shaft 96 passes through and is rotatably connected to the side of the outer box body 1, the two ends of the rotating shaft 96 are respectively fixedly connected to a main gear 97 and a slave gear 98, the gear rod B99 is fixedly connected to the inner box body. On the side of 73, the teeth on the main gear 97 are meshed with the teeth on the gear rod B99, and the teeth on the slave gear 98 are meshed with the teeth on the gear rod A95. When the gear rod B99 moves, it meshes with the teeth on the main gear 97 to drive the main gear 97 to rotate. The rotation of the slave gear 98 and the meshing of its upper teeth with the teeth on the gear rod A95 will drive the gear rod A95 to move toward the front end. The slave gear 98 is an incomplete gear. The two ends of the reset spring 94 are fixedly connected to the fixed block 91 and the cleaning brush 93 respectively. When the slave gear 98 rotates to the toothless part, it will disengage from the gear rod A95. When the cleaning brush 93 moves toward the front end, the reset spring 94 will be stretched.

[0025] The inner box body 73 is moved to the front end when it is in the process of being ejected from the protective shell 71. The inner box body 73 moves to the front end, which drives the gear rod B99 to move to the front end. When the gear rod B99 moves, it meshes with the teeth on the main gear 97, which drives the main gear 97 to rotate. The rotation of the main gear 97 drives the rotating shaft 96 to rotate. The rotation of the rotating shaft 96 drives the slave gear 98 to rotate. At the beginning, the slave gear 98 rotates and its upper teeth mesh with the teeth on the gear rod A95, which drives the gear rod A95 to move to the front end. The gear rod A95 moves to the front end and drives the cleaning brush 93 to move to the front end. The reset spring 94 is stretched. When the slave gear 98 rotates to the toothless part and disengages from the gear rod A95, the reset spring 94 rebounds and drives the cleaning brush 93 and the gear rod A95 to move to the rear end to restore, thereby forming a cycle. When the cleaning brush 93 moves back and forth several times, its bristles will clean the outer surface of the dustproof net 6 to prevent the outer surface of the dustproof net 6 from being blocked by dust and fluff under long-term use, affecting heat dissipation.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A protective transformer, characterized in that: The invention comprises an outer box (1), wherein the bottom of the outer box (1) is fixedly connected to a mounting base (2), the front end of the outer box (1) is provided with a box door (3), the top of the outer box (1) is fixedly connected to a ceiling (4), the top of the outer box (1) is provided with an exhaust fan (5), the side of the outer box (1) is provided with a dustproof net (6) and a cleaning mechanism (9), the interior of the outer box (1) is provided with a protective shell mechanism (7), and the top of the interior of the outer box (1) is provided with a deceleration mechanism (8); The protective shell mechanism (7) comprises a protective shell (71) and a slide (76); the protective shell (71) is fixedly connected to the interior of the outer box (1); a compression spring (72) is provided at the rear end of the interior of the protective shell (71); the interior of the protective shell (71) is slidably connected to the inner box (73) via the compression spring (72); a slot (74) is provided at the bottom of the inner box (73); a magnetic block (75) is fixedly connected to the interior of the slot (74); the bottom of the slide (76) is fixedly connected to the inner bottom of the outer box (1); a telescopic spring (77) is provided at the interior of the slide (76); a block (78) is slidably connected to the interior of the slide (76) via the telescopic spring (77); and a pull rod (79) is fixedly connected to the bottom of the block (78).

2. A protective transformer according to claim 1, characterized in that: The pull rod (79) penetrates the bottom of the outer box (1) and is slidably connected thereto, and the depth inside the slide cylinder (76) is greater than the length of the clamping block (78).

3. A protective transformer according to claim 2, characterized in that: The material of the clamping block (78) is stainless steel with ferromagnetism, and the top of the clamping block (78) is in contact with the bottom of the magnetic block (75) in an initial state.

4. A protective transformer according to claim 3, characterized in that: The material of the protective shell (71) is rubber material, and the compression spring (72) is in a compressed state in the initial state.

5. A protective transformer according to claim 4, characterized in that: The deceleration mechanism (8) comprises a connecting frame (81), a limiting rod (85) and a deceleration block (86); the top of the connecting frame (81) and the limiting rod (85) are fixedly connected to the inner top of the outer box body (1); the inner side of the connecting frame (81) is rotatably connected to a rotating rod (82); both ends of the rotating rod (82) are provided with torsion springs (83); the middle end of the rotating rod (82) is fixedly connected to a contact block (84); and the bottom of the deceleration block (86) is fixedly connected to the top of the inner box body (73).

6. A protective transformer according to claim 5, characterized in that: In the initial state, the bottom of the contact block (84) is close to the top of the speed reduction block (86), and the end of the limiting rod (85) away from the top of the interior of the outer box body (1) is close to the front end of the contact block (84).

7. A protective transformer according to claim 6, characterized in that: The deceleration block (86) is semi-cylindrical in shape as a whole, and is made of rubber.

8. A protective transformer according to claim 7, characterized in that: The cleaning mechanism (9) comprises a fixed block (91), a rotating shaft (96) and a gear rod B (99); the fixed block (91) is fixedly connected to the side of the outer box body (1); the front end of the fixed block (91) is fixedly connected to a sliding rod (92); the surface of the sliding rod (92) is slidably connected to a cleaning brush (93); the surface of the sliding rod (92) is sleeved with a return spring (94); the side of the cleaning brush (93) is fixedly connected to a gear rod A (95); the rotating shaft (96) passes through and is rotatably connected to the side of the outer box body (1); the two ends of the rotating shaft (96) are respectively fixedly connected to a main gear (97) and a slave gear (98); and the gear rod B (99) is fixedly connected to the side of the inner box body (73).

9. A protective transformer according to claim 8, characterized in that: The upper teeth of the main gear (97) mesh with the upper teeth of the gear rod B (99), and the upper teeth of the slave gear (98) mesh with the upper teeth of the gear rod A (95).

10. A protective transformer according to claim 9, characterized in that: The slave gear (98) is an incomplete gear, and the two ends of the return spring (94) are respectively fixedly connected to the fixed block (91) and the cleaning brush (93).

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