Traction transformer for rail transit

Abstract

The traction transformer comprises a plurality of mounting plates and an iron core, the mounting plates are symmetrically arranged front and back, a threaded rod is jointly mounted between every two adjacent mounting plates, bolts are mounted at the front end and the rear end of each threaded rod, an arc-shaped plate is fixedly connected to the center of an inner cavity of each mounting plate, and the iron core is fixedly connected to the arc-shaped plate. Through mutual cooperation of the tuning fork, the lifting rope, the ball body, the arc-shaped plate, a connecting rod, a limiting plate, a push block, a contact rod, a spring, a trigger switch, a cable, a buzzer, a fastening gear, a grooved wheel, a gear, a belt, a motor, a vertical plate and the like, the tuning fork can vibrate when a screw for clamping an iron core is loosened, and the ball body can be driven to deviate when the tuning fork vibrates, so that the iron core is prevented from being damaged. Therefore, the trigger switch is started to fasten the bolt, and further serious faults such as short circuit, insulation breakdown and the like are prevented from being caused to threaten personnel and equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of traction transformers, and in particular to a traction transformer for rail transit. Background Art

[0002] Traction transformers for rail transit are vital power equipment in railway and light rail transportation systems. The working principle of traction transformers for rail transit is mainly based on the law of electromagnetic induction. When alternating current is passed through the high-voltage winding, alternating magnetic flux is generated, which excites eddy currents in the iron core. Eddy currents cause losses and heat in the iron core, which need to be dissipated through a cooling system. At the same time, eddy currents generate direct current in the low-voltage windings to drive rail transit equipment such as subways and trams.

[0003] However, existing traction transformers for rail transit may have various problems during use. These problems mainly involve their operating status, performance, safety and reliability. Traction transformers should emit a steady, continuous and uniform buzzing sound during normal operation. If the sound is abnormal, such as increased pitch, discharge sound or bursting sound, it may indicate that the transformer is faulty. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a traction transformer for rail transit, comprising a plurality of mounting plates and an iron core, wherein the plurality of mounting plates are symmetrically arranged front and back, a threaded rod is commonly installed between every two adjacent mounting plates, bolts are installed at both the front and rear ends of the threaded rod, an arc-shaped plate is fixedly connected to the center of the inner cavity of the mounting plate, rectangular openings are opened on the left and right sides of the arc-shaped plate, a tuning fork is fixedly connected to the top of the inner cavity of the mounting plate, a sphere is fitted on the left and right sides of the tuning fork, a suspension rope is fixedly connected to the top of the sphere, the top ends of the two suspension ropes are fixedly connected to the top of the inner cavity of the mounting plate, and the rectangular openings are opened on the left and right sides of the arc-shaped plate. The inner cavity of the arc-shaped opening is provided with a plurality of push blocks, and the push blocks are linearly arranged in a trapezoid from top to bottom. The front and rear sides of the push blocks are fixedly connected to limit plates, and the push blocks are slidably connected to the rectangular opening through the limit plates. The side of the push block away from the tuning fork is fixedly connected to a contact rod, and the left and right sides of the arc-shaped plate are provided with trigger switches. A spring is sleeved on the outside of the contact rod, the left end of the spring is fixedly connected to the right side of the push block, and the right end of the spring is fixedly connected to the left side of the trigger switch. The right side of the trigger switch is electrically connected to two cables, and the other end of the cable located above is electrically connected to a buzzer, and the rear side of the buzzer is installed on the inner wall of the mounting plate.

[0005] Preferably, two vertical plates are fixedly connected to the bottom of the inner cavity of the mounting plate, and the two vertical plates are symmetrically arranged on the left and right. A motor is installed on the rear side of the vertical plate, and the motor power output shaft is fixedly sleeved with two transmission groove wheels, and the two transmission groove wheels are symmetrically arranged front to back. There are two groove wheels on the side of the motor away from the tuning fork, and the two groove wheels are symmetrically arranged up and down. A belt is commonly sleeved between the transmission groove wheels and the groove wheels, and a rotating shaft passes through the center of the groove wheel. The rear end of the rotating shaft is inserted into the inner wall of the mounting plate, and a gear is fixedly sleeved on the outer side of the rotating shaft, and the gear is located on the rear side of the groove wheel. A fastening gear is sleeved on the outer side of the bolt, and the fastening gear and the gear are meshed with each other.

[0006] Preferably, connecting rods are fixedly connected to the left and right sides of the tuning fork near the top, the corresponding sides of the two connecting rods are fitted with bolts, the front sides of the two connecting rods are fixedly connected to a mid-position rod, and the bottoms of the two mounting plates located below are jointly fitted with two bases, and the two bases are symmetrically arranged on the left and right.

[0007] Preferably, there are clamps on both the left and right sides of the iron core, the front sides of the two clamps are fixedly connected to L-shaped clamps, the two L-shaped clamps are fixedly connected to the opposite sides of the two limit rods, and the two limit rods are symmetrically arranged front to back, a sleeve block is sleeved on the outer side of the limit rod, and a placement plate is fixedly connected to the bottom of the sleeve block.

[0008] Preferably, the bottom of every two adjacent placement plates are commonly fixedly connected to a side plate, the top of the L-shaped clamp plate is hinged with two third cranks, the two third cranks are symmetrically arranged front to back, the top of the third crank is hinged with a second crank, the top of the placement plate is hinged with a first crank, the bottom of the second crank is hinged to the first crank, and the bottom of every two adjacent second cranks is commonly hinged to an opposing plate.

[0009] Preferably, an L-shaped linkage plate is fixedly connected at the center of the bottom of the two opposing plates, and a slide plate is fixedly connected between the two side plates near the center. A slide groove is provided at the bottom of the slide plate, and the tops of the two L-shaped linkage plates are slidably connected to the slide groove.

[0010] Preferably, the bottom of the two side panels are fixedly connected to a bottom plate near the front side, the center of the bottom of the bottom plate is fixedly connected to a cylinder, the cylinder power output shaft is fixedly connected to a connecting head, the bottom of the two L-shaped linkage plates are hinged with lower cranks, and the other sides of the two lower cranks are hinged to the connecting head.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The present invention can realize that when the screws clamping the iron core are loosened, the tuning fork can vibrate, and when the tuning fork vibrates, the sphere can be driven to deflect, thereby activating the trigger switch to tighten the bolts, thereby preventing further more serious faults such as short circuit, insulation breakdown, etc. from being caused. This can prevent threats to personnel and equipment.

[0013] 2. The present invention can realize timely detection when the core vibrates through the mutual cooperation between the clamping plate, L-shaped clamping plate, limit rod, sleeve block, first crank, second crank, third crank, opposing plate, bottom plate, L-shaped linkage plate, lower crank, connector, cylinder, slide plate and other components, and provide feedback through a buzzer to remind the staff to repair the traction transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the structure of the present invention;

[0015] Figure 2 It is a bottom view of the structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of the curved plate component of the present invention;

[0017] Figure 4 It is a front plan view of the curved plate structure of the component of the present invention;

[0018] Figure 5 This is a schematic diagram of the structure of the trigger switch of the component of the present invention;

[0019] Figure 6 It is a front plan view of the push block structure of the component of the present invention;

[0020] Figure 7 This is a schematic diagram of the vertical plate structure of the component of the present invention;

[0021] Figure 8 This is a schematic diagram of the bottom plate structure of the component of the present invention;

[0022] Fig. 9 This is a bottom view of the bottom plate structure of the component of the present invention;

[0023] Fig.10 It is a top plan view of the bottom plate structure of the component of the present invention;

[0024] Fig.11 Figure 3 Enlarged view of point A in the middle.

[0025] Numbers in the figure: 1. Mounting plate; 2. Iron core; 3. Base; 4. L-shaped clamping plate; 5. Bottom plate; 6. Arc plate; 7. Tuning fork; 8. Lifting rope; 9. Sphere; 10. Connecting rod; 11. Cable; 12. Buzzer; 13. Vertical plate; 14. Belt; 15. Gear; 16. Grooved wheel; 17. Fastening gear; 18. Trigger switch; 19. Motor; 20. Connector; 21. Spring; 22. Contact rod; 23. Push block; 24. Limit plate; 25. Clamping plate; 26. Limit rod; 27. Bushing block; 28. First crank; 29. ​​Opposite plate; 30. Second crank; 31. Third crank; 32. Cylinder; 33. Placement plate; 34. L-shaped linkage plate; 35. Side plate; 36. Lower crank; 37. Slide plate; 38. Middle rod. DETAILED DESCRIPTION

[0026] See also Figure 1-11The present invention provides a technical solution: a traction transformer for rail transit, comprising a plurality of mounting plates 1 and an iron core 2, wherein the plurality of mounting plates 1 are symmetrically arranged front and back, a threaded rod is commonly installed between each two adjacent mounting plates 1, bolts are installed at both the front and rear ends of the threaded rod, an arc plate 6 is fixedly connected to the center of the inner cavity of the mounting plate 1, rectangular openings are opened on the left and right sides of the arc plate 6, a tuning fork 7 is fixedly connected to the top of the inner cavity of the mounting plate 1, a sphere 9 is fitted on the left and right sides of the tuning fork 7, a suspension rope 8 is fixedly connected to the top of the sphere 9, and the tops of the two suspension ropes 8 are fixedly connected to the inner cavity of the mounting plate 1 At the top, the inner cavity of the rectangular opening has a plurality of push blocks 23, and the plurality of push blocks 23 are arranged linearly in a trapezoidal shape from top to bottom. The front and rear sides of the push blocks 23 are fixedly connected to the limit plates 24, and the push blocks 23 are slidably connected to the rectangular opening through the limit plates 24. The side of the push block 23 away from the tuning fork 7 is fixedly connected to the contact rod 22, and the left and right sides of the arc plate 6 are provided with trigger switches 18. A spring 21 is sleeved on the outside of the contact rod 22, and the left end of the spring 21 is fixedly connected to the right side of the push block 23, and the right end of the spring 21 is fixedly connected to the left side of the trigger switch 18. The right side of the trigger switch 18 is electrically connected to two cables 1 1, the other end of the cable 11 located at the top is electrically connected to a buzzer 12, the rear side of the buzzer 12 is installed on the inner wall of the mounting plate 1, and two vertical plates 13 are fixedly connected to the bottom of the inner cavity of the mounting plate 1, and the two vertical plates 13 are symmetrically arranged on the left and right. A motor 19 is installed on the rear side of the vertical plate 13, and the power output shaft of the motor 19 is fixedly sleeved with two transmission groove wheels, and the two transmission groove wheels are symmetrically arranged front and back. There are two groove wheels 16 on the side of the motor 19 away from the tuning fork 7, and the two groove wheels 16 are symmetrically arranged up and down. A belt 14 is sleeved between the transmission groove wheel and the groove wheel 16, and the groove wheel 16 is circular. A rotating shaft runs through the center, and the rear end of the rotating shaft is inserted into the inner wall of the mounting plate 1. A gear 15 is fixedly sleeved on the outer side of the rotating shaft, and the gear 15 is located on the rear side of the groove wheel 16. A fastening gear 17 is sleeved on the outer side of the bolt, and the fastening gear 17 and the gear 15 are meshed with each other. Connecting rods 10 are fixedly connected to the left and right sides of the tuning fork 7 near the top, and the corresponding sides of the two connecting rods 10 are fitted with bolts. The front sides of the two connecting rods 10 are fixedly connected with a middle rod 38. The bottoms of the two mounting plates 1 below are jointly fitted with two bases 3, and the two bases 3 are symmetrically arranged on the left and right.

[0027] The left and right sides of the iron core 2 are fitted with clamps 25, the front sides of the two clamps 25 are fixedly connected to the L-shaped clamps 4, the opposite sides of the two L-shaped clamps 4 are fixedly connected to two limit rods 26, and the two limit rods 26 are symmetrically arranged front and back, the outer side of the limit rod 26 is sleeved with a sleeve block 27, the bottom of the sleeve block 27 is fixedly connected to a placement plate 33, and the bottoms of every two adjacent placement plates 33 are commonly fixedly connected to a side plate 35, and the top of the L-shaped clamp 4 is hinged with two third cranks 31, and the two third cranks 31 are symmetrically arranged front and back, the top of the third crank 31 is hinged with a second crank 30, the top of the placement plate 33 is hinged with a first crank 28, and the bottom of the second crank 30 is hinged to the first crank 28. On a crank 28, each two adjacent second cranks 30 are hingedly connected to an opposing plate 29 at the bottom, and an L-shaped linkage plate 34 is fixedly connected to the center of the bottom of the two opposing plates 29. A slide plate 37 is fixedly connected between the two side plates 35 near the center, and a slide groove is provided at the bottom of the slide plate 37. The tops of the two L-shaped linkage plates 34 are slidably connected to the slide groove. The bottoms of the two side plates 35 are fixedly connected to a bottom plate 5 near the front side, and a cylinder 32 is fixedly connected to the center of the bottom of the bottom plate 5. The power output shaft of the cylinder 32 is fixedly connected to a connecting head 20. The bottoms of the two L-shaped linkage plates 34 are hinged to lower cranks 36, and the other sides of the two lower cranks 36 are hinged to the connecting head 20.

[0028] Working principle: When the bolt is loose and vibrates, it can fit with the connecting rod 10. Since the connecting rod 10 is connected to the tuning fork 7, the tuning fork 7 can be driven to vibrate when the bolt vibrates. When the tuning fork 7 vibrates, since it fits with the two spheres 9, the two spheres 9 can swing away and fit with the adjacent push block 23, so that the push block 23 moves away from the tuning fork 7. When the push block 23 moves, the trigger switch 18 can be activated. The trigger switch 18 can start the motor 19 through the cable 11 located below. When the motor 19 is started, the two transmission groove wheels can be driven to rotate through the power output shaft. The two transmission groove wheels can drive the two groove wheels 16 to rotate through the adjacent belts 14. The two groove wheels can drive the adjacent gears 15 to rotate through the rotating shaft, and the gear 15 can drive the fastening gear The wheel 17 rotates, and when the tightening gear 17 rotates, the bolt can be driven to rotate, thereby tightening the bolt. When the iron core 2 needs to be tested, the cylinder 32 can be started, and the cylinder 32 can drive the connecting head 20 to move forward through the power output shaft. When the connecting head 20 moves forward, the two lower cranks 36 can drive the two L-shaped linkage plates 34 to move in opposite directions. The sliding plate 37 can limit the movement trajectory of the L-shaped linkage plates 34. When the two L-shaped linkage plates 34 move in opposite directions, the adjacent opposing plates 29 can be driven to move in opposite directions, so that the two clamping plates 25 are fitted with the iron core 2. When the iron core 2 vibrates at high frequency, the tuning fork 7 can be driven to vibrate synchronously through the middle rod 38, and the adjacent push block 23 can be triggered to move. The push block 23 can start the buzzer 12 by triggering the switch 18.

Claims

1. A traction transformer for rail transit, comprising a plurality of mounting plates (1) and an iron core (2), characterized in that: The plurality of mounting plates (1) are symmetrically arranged front and back, a threaded rod is commonly installed between each two adjacent mounting plates (1), bolts are installed at both front and rear ends of the threaded rod, an arc plate (6) is fixedly connected to the center of the inner cavity of the mounting plate (1), rectangular openings are opened on the left and right sides of the arc plate (6), a tuning fork (7) is fixedly connected to the top of the inner cavity of the mounting plate (1), a sphere (9) is fitted on the left and right sides of the tuning fork (7), a hanging rope (8) is fixedly connected to the top of the sphere (9), the top ends of the two hanging ropes (8) are fixedly connected to the top of the inner cavity of the mounting plate (1), the inner cavity of the rectangular opening has a plurality of push blocks (23), the plurality of push blocks (23) are sequentially arranged in a trapezoidal linear pattern from top to bottom, and the push blocks (23) Both the front and rear sides are fixedly connected with a limit plate (24), the push block (23) is slidably connected to the rectangular opening through the limit plate (24), the side of the push block (23) away from the tuning fork (7) is fixedly connected with a contact rod (22), the left and right sides of the arc plate (6) are provided with a trigger switch (18), the outer side of the contact rod (22) is sleeved with a spring (21), the left end of the spring (21) is fixedly connected to the right side of the push block (23), the right end of the spring (21) is fixedly connected to the left side of the trigger switch (18), the right side of the trigger switch (18) is electrically connected to two cables (11), the other end of the cable (11) located at the top is electrically connected to a buzzer (12), and the rear side of the buzzer (12) is mounted on the inner wall of the mounting plate (1).

2. A traction transformer for rail transit according to claim 1, characterized in that: Two vertical plates (13) are fixedly connected to the bottom of the inner cavity of the mounting plate (1), and the two vertical plates (13) are symmetrically arranged on the left and right. A motor (19) is installed on the rear side of the vertical plate (13). The power output shaft of the motor (19) is fixedly sleeved with two transmission groove wheels, and the two transmission groove wheels are symmetrically arranged in front and back. The motor (19) has two groove wheels (16) on the side away from the tuning fork (7), and the two groove wheels (16) are symmetrically arranged in the upper and lower parts. A belt (14) is sleeved between the transmission groove wheels and the groove wheels (16). A rotating shaft is penetrated at the center of the groove wheel (16), and the rear end of the rotating shaft is plugged into the inner wall of the mounting plate (1). A gear (15) is fixedly sleeved on the outer side of the rotating shaft, and the gear (15) is located on the rear side of the groove wheel (16). A fastening gear (17) is sleeved on the outer side of the bolt, and the fastening gear (17) and the gear (15) are meshed with each other.

3. A traction transformer for rail transit according to claim 2, characterized in that: Connecting rods (10) are fixedly connected to the left and right sides of the tuning fork (7) near the top, and the corresponding sides of the two connecting rods (10) are both fitted with bolts. The front sides of the two connecting rods (10) are fixedly connected with a middle rod (38). The bottoms of the two mounting plates (1) located below are jointly fitted with two bases (3), and the two bases (3) are symmetrically arranged on the left and right.

4. A traction transformer for rail transit according to claim 3, characterized in that: The iron core (2) is fitted with clamping plates (25) on both left and right sides, and the front sides of the two clamping plates (25) are fixedly connected to L-shaped clamping plates (4). The two L-shaped clamping plates (4) are fixedly connected to two limiting rods (26) on the opposite sides, and the two limiting rods (26) are symmetrically arranged front and back. The outer side of the limiting rod (26) is sleeved with a sleeve block (27), and the bottom of the sleeve block (27) is fixedly connected to a placement plate (33).

5. A traction transformer for rail transit according to claim 4, characterized in that: The bottoms of every two adjacent placement plates (33) are commonly fixedly connected to a side plate (35); the top of the L-shaped clamping plate (4) is hinged with two third cranks (31); the two third cranks (31) are symmetrically arranged front to back; the top of the third crank (31) is hinged with a second crank (30); the top of the placement plate (33) is hinged with a first crank (28); the bottom of the second crank (30) is hinged to the first crank (28); and the bottoms of every two adjacent second cranks (30) are commonly hinged with an opposing plate (29).

6. A traction transformer for rail transit according to claim 5, characterized in that: An L-shaped linkage plate (34) is fixedly connected at the center of the bottom of the two opposing plates (29), and a slide plate (37) is fixedly connected between the two side plates (35) near the center. A slide groove is provided at the bottom of the slide plate (37), and the tops of the two L-shaped linkage plates (34) are slidably connected to the slide groove.

7. A traction transformer for rail transit according to claim 6, characterized in that: The bottoms of the two side plates (35) are fixedly connected to a bottom plate (5) near the front side, the bottom center of the bottom of the bottom plate (5) is fixedly connected to a cylinder (32), the power output shaft of the cylinder (32) is fixedly connected to a connecting head (20), the bottoms of the two L-shaped linkage plates (34) are hinged with lower cranks (36), and the other sides of the two lower cranks (36) are hinged to the connecting head (20).

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