A traction transformer for rail transit

Abstract

The present invention discloses 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 to back, a threaded rod is commonly installed between every two adjacent mounting plates, bolts are installed at both front and rear ends of the threaded rod, and an arc plate is fixedly connected to the center of the inner cavity of the mounting plate. The present invention cooperates with components such as a tuning fork, a suspension rope, a sphere, an arc plate, a connecting rod, a limit plate, a push block, a contact rod, a spring, a trigger switch, a cable, a buzzer, a fastening gear, a sheave, a gear, a belt, a motor, and a riser, so that when the screws clamping the iron core are loosened, the tuning fork can be vibrated, 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., which pose a threat to 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 crucial power equipment in railway and light rail systems. Their operating principle is based primarily on the law of electromagnetic induction. When alternating current flows through the high-voltage winding, it generates alternating magnetic flux, which excites eddy currents in the iron core. These eddy currents generate losses and heat in the iron core, which must be dissipated through a cooling system. Simultaneously, these eddy currents generate direct current in the low-voltage winding, driving rail transit equipment such as subways and trams.

[0003] However, existing rail transit traction transformers may encounter 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 an 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 several mounting plates and an iron core, several of the mounting plates are symmetrically arranged front and back, a threaded rod is commonly installed between every two adjacent mounting plates, bolts are installed at the front and rear ends of the threaded rod, an arc plate is fixedly connected at the center of the inner cavity of the mounting plate, rectangular openings are opened on the left and right sides of the arc 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, and the top ends of the two suspension ropes are fixedly connected to the top of the inner cavity of the mounting plate, the inner cavity of the rectangular opening has several push blocks, and the push blocks are linearly arranged in a trapezoidal shape from top to bottom, the front and rear sides of the push block are fixedly connected to a limit plate, the push block is slidably connected to the rectangular opening through the limit plate, the side of the push block away from the tuning fork is fixedly connected to a contact rod, trigger switches are provided on the left and right sides of the arc plate, and the outer sleeve of the contact rod A spring is connected, the left end of the spring is fixedly connected to the right side of the push block, 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, the rear side of the buzzer is mounted on the inner side wall of the mounting plate, and two vertical plates are fixedly connected to the bottom of the inner cavity of the mounting plate, the two vertical plates are symmetrically arranged on the left and right, and a motor is installed on the rear side of the vertical plate, the motor power output shaft is fixedly sleeved with two transmission sheaves, and the two transmission sheaves are symmetrically arranged front to back, and there are two sheaves on the side of the motor away from the tuning fork, and the two sheaves are symmetrically arranged up and down, a belt is commonly sleeved between the transmission sheave and the sheave, a rotating shaft is passed through the center of the sheave, and the rear end of the rotating shaft is inserted into the inner side wall of the mounting plate, a gear is fixedly sleeved on the outside of the rotating shaft, the gear is located at the rear side of the sheave, a fastening gear is sleeved on the outside of the bolt, and the fastening gear and the gear are meshed with each other.

[0005] Preferably, connecting rods are fixedly connected near the top on the left and right sides of the tuning fork, the corresponding sides of the two connecting rods are fitted with bolts, the front sides of the two connecting rods are fixedly connected with 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.

[0006] Preferably, there are splints on both the left and right sides of the iron core, the front sides of the two splints are fixedly connected to L-shaped splints, the two L-shaped splints are fixedly connected to the opposite sides of the two limit rods, and the two limit rods are symmetrically arranged front to back, and 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.

[0007] Preferably, the bottoms of every two adjacent placement plates are commonly fixedly connected to a side plate, the top of the L-shaped splint 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 bottoms of every two adjacent second cranks are commonly hinged to an opposing plate.

[0008] 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 sliding 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 sliding groove.

[0009] Preferably, the bottom of the two side panels are fixedly connected to a base plate near the front side, the center of the bottom of the base 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.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The present invention uses the mutual cooperation among the tuning fork, the hanging rope, the sphere, the arc plate, the connecting rod, the limit plate, the push block, the contact rod, the spring, the trigger switch, the cable, the buzzer, the fastening gear, the groove wheel, the gear, the belt, the motor, the riser and other components to achieve that when the screws clamping the iron core are loose, the tuning fork can be vibrated, and when the tuning fork vibrates, the sphere can be driven to deflect, thereby activating the trigger switch to tighten the bolt, thereby preventing further more serious faults such as short circuit, insulation breakdown, etc., which would pose a threat to personnel and equipment.

[0012] The present invention can realize timely detection when the iron core vibrates through the mutual cooperation between the components such as the clamping plate, L-shaped clamping plate, limit rod, sleeve block, first crank, second crank, third crank, opposite plate, bottom plate, L-shaped linkage plate, lower crank, connecting head, cylinder, slide plate, etc., and provide feedback through the buzzer to remind the staff to repair the traction transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of the structure of the present invention;

[0014] Figure 2 It is a bottom view of the structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the structure of the curved plate component of the present invention;

[0016] Figure 4 This is a front plan view of the curved plate structure of the component of the present invention;

[0017] Figure 5 This is a schematic diagram of the structure of the trigger switch component of the present invention;

[0018] Figure 6 It is a front plan view of the push block structure of the component of the present invention;

[0019] Figure 7 This is a schematic diagram of the vertical plate structure of the component of the present invention;

[0020] Figure 8 This is a schematic diagram of the bottom plate structure of the component of the present invention;

[0021] Figure 9 This is a bottom view of the base plate structure of the component of the present invention;

[0022] Figure 10 A top plan view of the bottom plate structure of the component of the present invention;

[0023] Figure 11 Figure 3 Enlarged view of point A in the middle.

[0024] Numbers in the figure: 1. Mounting plate; 2. Iron core; 3. Base; 4. L-shaped splint; 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. Sheave; 17. Fastening gear; 18. Trigger switch; 19. Motor; 20. Connector; 21. Spring; 22. Contact rod; 23. Push block; 24. Limit plate; 25. Splint; 26. Limit rod; 27. Bushing; 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

[0025] 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 to back, a threaded rod is commonly installed between each two adjacent mounting plates 1, and bolts are installed at both ends of the threaded rod. An arc-shaped plate 6 is fixedly connected to the center of the inner cavity of the mounting plate 1, and rectangular openings are opened on both sides of the arc-shaped plate 6. A tuning fork 7 is fixedly connected to the top of the inner cavity of the mounting plate 1, and a sphere 9 is fitted on both 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, there are several push blocks 23 in the inner cavity of the rectangular opening. The 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. 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. There are trigger switches 18 on the left and right sides of the arc plate 6. A spring 21 is sleeved on the outside of the contact rod 22. 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 above is electrically connected to a buzzer 12, the rear side of the buzzer 12 is mounted on the inner wall of the mounting plate 1, and the bottom of the inner cavity of the mounting plate 1 is fixedly connected to two vertical plates 13, 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 commonly 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 outside of the rotating shaft. The gear 15 is located on the rear side of the groove wheel 16. A fastening gear 17 is sleeved on the outside of the bolt. The fastening gear 17 and the gear 15 are meshed with each other. Connecting rods 10 are fixedly connected near the top on the left and right sides of the tuning fork 7. 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 mid-position rod 38. The bottom 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.

[0026] The left and right sides of the iron core 2 are fitted with plywood 25, and the front sides of the two plywood 25 are fixedly connected to the L-shaped plywood 4. The two L-shaped plywood 4 are fixedly connected to the opposite sides of the two limit rods 26, and the two limit rods 26 are symmetrically arranged front to back. A sleeve block 27 is sleeved on the outer side of the limit rod 26, and a placement plate 33 is fixedly connected to the bottom of the sleeve block 27. The bottoms of every two adjacent placement plates 33 are commonly fixedly connected to the side plates 35. The top of the L-shaped plywood 4 is hinged to two third cranks 31, and the two third cranks 31 are symmetrically arranged front to back. The top of the third crank 31 is hinged to the second crank 30, the top of the placement plate 33 is hinged to the first crank 28, and the bottom of the second crank 30 is hinged to the first crank On a crank 28, the bottoms of every two adjacent second cranks 30 are hinged with a facing plate 29, and the centers of the bottoms of the two facing plates 29 are fixedly connected with an L-shaped linkage plate 34. 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 with the bottom plate 5 near the front side, and the center of the bottom of the bottom plate 5 is fixedly connected with a cylinder 32. The power output shaft of the cylinder 32 is fixedly connected with a connector 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 connector 20.

[0027] 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 from each other 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 sheaves can be driven to rotate through the power output shaft. The two transmission sheaves can drive the two sheaves 16 to rotate through the adjacent belts 14. The two sheaves 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, it can drive the bolt 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, they can drive the adjacent opposing plates 29 to move in opposite directions, so that the two splints 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 trigger the adjacent push block 23 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 to back, and a threaded rod is commonly installed between each two adjacent mounting plates (1), and bolts are installed at both front and rear ends of the threaded rod. An arc-shaped plate (6) is fixedly connected to the center of the inner cavity of the mounting plate (1), and rectangular openings are opened on the left and right sides of the arc-shaped plate (6). A tuning fork (7) is fixedly connected to the top of the inner cavity of the mounting plate (1), and a sphere (9) is attached to the left and right sides of the tuning fork (7). A hanging rope (8) is fixedly connected to the top of the sphere (9), and 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), 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). The push blocks (23) are slidably connected to the rectangular opening through the limit plates (24). The side of the push blocks (23) away from the tuning fork (7) is fixedly connected to the contact rod (22). The left and right sides of the arc plate (6) have trigger switches (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 spring (21) is fixedly connected to the right side of the push block (23). ) 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 above is electrically connected to a buzzer (12), the rear side of the buzzer (12) is mounted on the inner wall of the mounting plate (1), the bottom of the inner cavity of the mounting plate (1) is fixedly connected to two vertical plates (13), the two vertical plates (13) are symmetrically arranged on the left and right, the rear side of the vertical plate (13) is mounted with a motor (19), the power output shaft of the motor (19) is fixedly sleeved with two transmission groove wheels, and the two transmission groove wheels are front The motor (19) is symmetrically arranged at the rear, and two groove wheels (16) are arranged symmetrically up and down. A belt (14) is commonly sleeved between the transmission groove wheel and the groove wheel (16). A rotating shaft is provided at the center of the groove wheel (16). 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. The gear (15) is located at the rear side of the groove wheel (16). A fastening gear (17) is sleeved on the outer side of the bolt. The fastening gear (17) and the gear (15) are meshed with each other.

2. The traction transformer for rail transit according to claim 1, 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 to a center rod (38), and the bottoms of the two mounting plates (1) located below are fitted with two bases (3), and the two bases (3) are symmetrically arranged on the left and right.

3. The traction transformer for rail transit according to claim 2, characterized in that: The iron core (2) is fitted with a clamping plate (25) on both the left and right sides. The front sides of the two clamping plates (25) are fixedly connected to an L-shaped clamping plate (4). The two L-shaped clamping plates (4) are fixedly connected to the opposite sides of the two limiting rods (26), 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).

4. The traction transformer for rail transit according to claim 3, characterized in that: The bottoms of every two adjacent placement plates (33) are fixedly connected to a side plate (35); the top of the L-shaped clamping plate (4) is hinged to two third cranks (31); the two third cranks (31) are symmetrically arranged front to back; the top of the third crank (31) is hinged to a second crank (30); the top of the placement plate (33) is hinged to 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 hinged to an opposing plate (29).

5. The traction transformer for rail transit according to claim 4, characterized in that: The two opposing plates (29) are fixedly connected to an L-shaped linkage plate (34) at the center of the bottom, 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.

6. The traction transformer for rail transit according to claim 5, characterized in that: The bottoms of the two side plates (35) are fixedly connected to a bottom plate (5) near the front side, the 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 connector (20), and 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 connector (20).

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