A mounting base for a direct current converter transformer

Abstract

The present application relates to transformer mounting support technical field, particularly to a kind of installation seat of direct current converter transformer, including fixed base frame and transverse floating frame, transverse floating frame is supported in fixed base frame and is kept centring position by complex elastic member;Transverse floating frame is equipped with reference bearing seat, longitudinal guide rail and longitudinal sliding seat.Longitudinal sliding seat is equipped with locking block and follow-up roller, and fixed base frame is equipped with bidirectional wedge-shaped trigger rail.In normal state, locking block and the locking surface of longitudinal guide rail are separated, and longitudinal sliding seat can generate longitudinal sliding with the thermal expansion of converter transformer;When transverse floating frame occurs transverse offset, follow-up roller enters trigger inclined plane and drives locking block to press locking surface, limit longitudinal sliding seat to continue sliding, so that normal thermal expansion compensation and longitudinal constraint in transverse offset state can be converted according to the actual position change of installation seat.

Description

Technical Field

[0001] This invention relates to the field of transformer mounting and support technology, and in particular to a mounting base for a DC converter transformer. Background Technology

[0002] DC converter transformers typically have a large equipment mass and a long tank size, and their mounting locations need to withstand the equipment's own weight and vibration loads generated during operation over a long period. When the operating temperature of the converter transformer changes, the tank and its bottom mounting structure will experience thermal expansion and contraction along the length direction. If both longitudinal mounting positions are rigidly fixed, the change in the length of the tank is easily constrained by the mounting foundation, creating additional forces at the mounting locations.

[0003] To accommodate the aforementioned length variations, some installation structures can form a fixed support at one installation location while retaining longitudinal sliding capability at another, allowing the equipment to generate a certain amount of compensating displacement along its length. However, when the equipment is subjected to significant lateral vibration or short-term lateral force, the original longitudinal sliding degree of freedom still exists, and the equipment may simultaneously experience lateral offset and longitudinal relative movement. Simply setting a lateral limiting structure typically only restricts lateral displacement and is insufficient to synchronously change the longitudinal sliding relationship based on the lateral offset state. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problems by providing a mounting base for a DC converter transformer.

[0005] The technical solution of the present invention is a mounting base for a DC converter transformer, comprising a fixed base frame and a transverse floating frame. The transverse floating frame is slidably supported on the fixed base frame via a transverse guide pair. A centering elastic element is provided between the transverse floating frame and the fixed base frame to maintain the transverse floating frame in a centered position. A reference bearing seat and a longitudinal guide rail are spaced apart along the length of the converter transformer on the transverse floating frame. A longitudinal sliding seat is slidably supported on the longitudinal guide rail. The reference bearing seat and the longitudinal sliding seat respectively support two longitudinal mounting parts of the converter transformer. A locking block is vertically slidably provided on the longitudinal sliding seat. The locking block is kept separated from the locking surface on the upper surface of the longitudinal guide rail by a locking and reset elastic element. The upper end of the locking block is provided with a follower roller. The fixed base is provided with a bidirectional wedge trigger rail extending longitudinally and located above the follower roller. The lower surface of the bidirectional wedge trigger rail has an avoidance section corresponding to the center position of the transverse floating frame and trigger ramps connecting the transverse sides of the avoidance section. When the transverse floating frame shifts laterally and the follower roller enters any of the trigger ramps, the trigger ramps press down on the locking block and press it against the locking surface, restricting the longitudinal sliding seat from sliding along the longitudinal guide rail.

[0006] In one embodiment, the lateral guide pair includes lateral support rails fixed to the fixed base frame and parallel to each other, and load-bearing slippers fixed to the bottom of the lateral floating frame. The load-bearing slippers are slidably engaged with the lateral support rails, so that the lateral floating frame maintains lateral movement relative to the fixed base frame. The composite elastic members are arranged in pairs on both sides of the lateral floating frame and abut against the lateral floating frame in opposite directions.

[0007] In one implementation, the horizontal width of the avoidance section is greater than the diameter of the follower roller, so that in the centering state, there is a triggering gap between the follower roller and the triggering inclined surfaces on both sides; the fixed base frame is provided with horizontal limiting blocks on both sides of the horizontal floating frame, and the triggering gap is less than the initial gap between the horizontal floating frame and the corresponding horizontal limiting block.

[0008] In one embodiment, the two ends of the bidirectional wedge trigger rail are respectively fixed to the fixed base frame by support columns. The transverse floating frame is provided with a clearance groove extending in the transverse direction corresponding to the support columns. The bidirectional wedge trigger rail spans above the longitudinal sliding seat, and its effective length in the longitudinal direction is greater than the allowable sliding stroke of the longitudinal sliding seat, so that the follower roller is aligned with the bidirectional wedge trigger rail at each longitudinal position of the longitudinal sliding seat.

[0009] In one embodiment, a vertically extending locking guide cavity is formed within the longitudinal sliding seat, and the locking pressure block is slidably fitted into the locking guide cavity. A friction locking pad opposite to the locking surface is provided at the lower end of the locking pressure block. The locking reset elastic element is supported between the locking pressure block and the longitudinal sliding seat, and causes the friction locking pad to disengage from the locking surface after the follower roller leaves the trigger inclined surface.

[0010] In one embodiment, a lateral buffer block is provided on the side of the lateral limiting block facing the lateral floating frame. There is a gap between the lateral buffer block and the lateral floating frame in the center position. After the follower roller enters the trigger inclined surface and the locking block presses against the locking surface, the lateral floating frame continues to move laterally before contacting the corresponding lateral buffer block.

[0011] In one implementation, the avoidance section is a horizontal straight surface, and the two triggering ramps gradually decrease in length from the avoidance section to both sides and are symmetrical about the centerline of the avoidance section. The avoidance section and the two triggering ramps are connected by a circular arc transition.

[0012] In one embodiment, the longitudinal sliding seat is mounted on the longitudinal guide rail, and load-bearing rollers are arranged longitudinally at intervals between the longitudinal sliding seat and the longitudinal guide rail. Lateral guide wheels are respectively provided on both sides of the longitudinal sliding seat to roll in contact with the side of the longitudinal guide rail. The load-bearing rollers bear the vertical load, and the two lateral guide wheels restrict the lateral deflection of the longitudinal sliding seat during the thermal expansion sliding process.

[0013] In one embodiment, vibration damping bearing pads are respectively provided between the reference bearing seat and the longitudinal sliding seat and the converter transformer mounting position. The reference bearing seat and the longitudinal sliding seat are also respectively provided with anti-pull-out limiting members spanning above the converter transformer mounting position. A vertical movable gap is left between the anti-pull-out limiting members and the converter transformer mounting position so that the vibration damping bearing pads are not rigidly clamped by the anti-pull-out limiting members when they bear normal vertical vibration deformation.

[0014] In one embodiment, the locking surface extends continuously along the longitudinal guide rail, and the longitudinal length of the locking surface covers the entire permissible sliding range of the longitudinal sliding seat.

[0015] The advantages of this invention compared to existing technologies are that the lateral floating frame can move laterally relative to the fixed base, while the longitudinal sliding seat can move along the longitudinal guide rail under normal conditions, providing longitudinal compensation space when the length of the converter transformer changes. After the lateral floating frame deviates, since the bidirectional wedge trigger rail remains on one side of the fixed base, the follower roller moves laterally relative to the bidirectional wedge trigger rail and enters the trigger ramp. The trigger ramp presses down on the locking block, causing the locking block to press against the locking surface, thereby restricting the original longitudinal sliding. After the lateral action is released, the centering elastic element centers the lateral floating frame, and the locking reset elastic element releases the locking block from the locking state, allowing the longitudinal sliding seat to regain its sliding ability. Attached Figure Description

[0016] Figure 1 A schematic diagram of the first overall structure of the mounting base for the DC converter transformer provided in an embodiment of the present invention;

[0017] Figure 2 A schematic diagram of the second integral structure of the mounting base for the DC converter transformer provided in an embodiment of the present invention;

[0018] Figure 3 A first partial cross-sectional view of the mounting base of the DC converter transformer provided for an embodiment of the present invention;

[0019] Figure 4 This is a second partial cross-sectional view of the mounting base for a DC converter transformer provided in an embodiment of the present invention.

[0020] In the diagram: 1. Fixed base frame; 2. Lateral floating frame; 3. Lateral guide pair; 4. Reverse elastic element; 5. Reference bearing seat; 6. Longitudinal guide rail; 7. Longitudinal sliding seat; 8. Locking pressure block; 9. Locking and resetting elastic element; 10. Locking surface; 11. Follower roller; 12. Bidirectional wedge trigger rail; 13. Avoidance section; 14. Triggering slope; 15. Lateral support rail; 16. Bearing slipper; 17. Lateral limiting block; 18. Support column; 19. Avoidance groove; 20. Locking guide cavity; 21. Friction locking pad; 22. Lateral buffer block; 23. Bearing roller; 24. Lateral guide wheel; 25. Vibration damping bearing pad; 26. Pull-out limiting element. Detailed Implementation

[0021] The above and other embodiments and advantages of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] In one implementation, such as Figures 1 to 4As shown. A mounting base for a DC converter transformer includes a fixed base frame 1 and a transverse floating frame 2. The transverse floating frame 2 is slidably supported on the fixed base frame 1 by a transverse guide pair 3. A centering elastic element 4 is provided between the transverse floating frame 2 and the fixed base frame 1 to keep the transverse floating frame 2 in a centering position. In this embodiment, the centering position refers to the initial transverse position maintained by the transverse floating frame 2 under the combined action of the centering elastic elements 4 on both sides when it is not subjected to a continuous transverse external force. When in this position, the follower roller 11 corresponds to the avoidance section 13 of the bidirectional wedge trigger rail 12. A reference bearing seat 5 and a longitudinal guide rail 6 are provided at intervals along the length direction of the converter transformer on the transverse floating frame 2. A longitudinal sliding seat 7 is slidably supported on the longitudinal guide rail 6. The reference bearing seat 5 and the longitudinal sliding seat 7 respectively support two longitudinal mounting parts of the converter transformer. A longitudinal sliding seat 7 spans the longitudinal guide rail 6, with its bottom supported by load-bearing rollers 23 spaced longitudinally. Lateral guide wheels 24 on both sides roll against the corresponding sides of the longitudinal guide rail 6, allowing the longitudinal sliding seat 7 to move longitudinally while limiting its lateral deviation during movement. A locking block 8 is vertically slidable on the longitudinal sliding seat 7. The locking block 8 is separated from the locking surface 10 on the upper surface of the longitudinal guide rail 6 by a locking and reset elastic member 9. A follower roller 11 is provided at the upper end of the locking block 8. The locking block 8 slides within a vertically extending locking guide cavity 20 in the longitudinal sliding seat 7. The opposite side walls of the locking guide cavity 20 provide vertical guidance and circumferential limitation for the locking block 8, allowing it to move only vertically. A limiting shoulder is formed on the upper part of the locking block 8, which is positioned opposite to the upper periphery of the locking guide cavity 20 to limit the upward reset position of the locking block 8. A bidirectional wedge-shaped trigger rail 12 extending longitudinally and located above the follower roller 11 is provided on the fixed base frame 1. The lower surface of the bidirectional wedge-shaped trigger rail 12 has a clearance section 13 corresponding to the center position of the transverse floating frame 2 and trigger ramps 14 connecting the transverse sides of the clearance section 13. The bidirectional wedge-shaped trigger rail 12 is elongated in the longitudinal direction, and a horizontal clearance section 13 is formed in the middle of the lower edge of its transverse cross section. The two sides of the clearance section 13 gradually decrease outward to form trigger ramps 14. The two trigger ramps 14 are symmetrically arranged with respect to the middle of the clearance section 13 and transition continuously with the clearance section 13. When the transverse floating frame 2 shifts laterally and the follower roller 11 enters either trigger ramp 14, the trigger ramp 14 presses down on the locking block 8 and presses it against the locking surface 10, restricting the longitudinal sliding seat 7 from sliding along the longitudinal guide rail 6.

[0023] In this embodiment, the fixed base frame 1 constitutes the fixed support portion of the mounting base relative to the equipment foundation. The transverse floating frame 2 is located above the fixed base frame 1 and can move laterally relative to the fixed base frame 1 under the constraint of the transverse guide pair 3. The centering elastic element 4 acts between the fixed base frame 1 and the transverse floating frame 2, keeping the transverse floating frame 2 in or returning to the centering position corresponding to the bidirectional wedge trigger rail 12 when there is no continuous transverse action. The reference bearing seat 5 and the longitudinal sliding seat 7 are arranged at intervals along the length direction of the converter transformer. After the converter transformer is installed, one longitudinal mounting position is supported by the reference bearing seat 5, and the other longitudinal mounting position is supported by the longitudinal sliding seat 7. The reference bearing seat 5 determines the longitudinal reference of the converter transformer relative to the transverse floating frame 2, and the longitudinal sliding seat 7 can move along the longitudinal guide rail 6. When the length of the converter transformer changes due to operating temperature variations, the longitudinal mounting position and the longitudinal sliding seat 7 move together along the longitudinal guide rail 6, so that the length change does not need to be entirely borne by the rigid deformation of the two mounting positions.

[0024] Under normal operating conditions, the transverse floating frame 2 is in the center position, and the follower roller 11 is located at the corresponding position of the avoidance section 13 of the bidirectional wedge trigger rail 12. The locking reset elastic element 9 applies a reset action to the locking block 8, keeping the locking block 8 separated from the locking surface 10 on the upper surface of the longitudinal guide rail 6. At this time, the locking block 8 will not form longitudinal braking on the longitudinal sliding seat 7, and the longitudinal sliding seat 7 can move along the longitudinal guide rail 6 according to the thermal expansion and contraction of the converter transformer.

[0025] When the converter transformer is subjected to an action sufficient to cause the transverse floating frame 2 to move laterally, the converter transformer, the reference bearing seat 5, the longitudinal sliding seat 7, and the transverse floating frame 2 together undergo a lateral offset relative to the fixed base frame 1. The bidirectional wedge trigger rail 12 is located on one side of the fixed base frame 1, and therefore does not undergo the same lateral displacement as the transverse floating frame 2. The follower roller 11 is mounted on the upper end of the locking block 8 on the longitudinal sliding seat 7, and therefore moves laterally together with the transverse floating frame 2. As a result, a lateral relative displacement occurs between the follower roller 11 and the bidirectional wedge trigger rail 12. After leaving the avoidance section 13, the follower roller 11 enters one of the trigger ramps 14. Since the trigger ramp 14 gradually decreases laterally, the follower roller 11 is vertically restricted by the trigger ramp 14 when it continues to move laterally. The follower roller 11 transmits this action to the locking block 8, causing the locking block 8 to move downward along the longitudinal sliding seat 7. When the locking block 8 moves to the locking position, its lower part presses against the locking surface 10 on the longitudinal guide rail 6, thereby increasing the constraint on the longitudinal sliding seat 7 to continue moving longitudinally relative to the longitudinal guide rail 6.

[0026] The purpose of this embodiment is to directly change the constraint state of the longitudinal sliding seat 7 by causing the lateral displacement of the lateral floating frame 2. When the lateral floating frame 2 is in the center position, the locking block 8 remains disengaged, and the longitudinal sliding seat 7 retains its longitudinal thermal expansion compensation capability. When the lateral floating frame 2 deviates from the center position and the follower roller 11 enters the triggering ramp 14, the bidirectional wedge trigger rail 12 converts the lateral relative displacement into the vertical downward movement of the locking block 8, thus restricting the longitudinal sliding. Therefore, the same mounting seat can mechanically switch between the longitudinally sliding state and the longitudinally constrained state according to the change in lateral position without needing to separately detect which longitudinal thermal expansion position the converter transformer is currently in. After the lateral action is released, the centering elastic element 4 pushes the lateral floating frame 2 to move towards the center position, and the follower roller 11 returns from the triggering ramp 14 to the avoidance section 13. The downward constraint of the triggering ramp 14 on the follower roller 11 is then released, and the locking reset elastic element 9 pushes the locking block 8 upward to reset, causing the locking block 8 to separate from the locking surface 10 again. The longitudinal sliding seat 7 thus regains its ability to move along the longitudinal guide rail 6.

[0027] In one embodiment, the transverse guide pair 3 includes transverse support rails 15 fixed to the fixed base frame 1 and parallel to each other, and load-bearing slippers 16 fixed to the bottom of the transverse floating frame 2. The load-bearing slippers 16 are slidably engaged with the transverse support rails 15 respectively, so that the transverse floating frame 2 maintains transverse movement relative to the fixed base frame 1; the intermediate elastic members 4 are arranged in pairs on the transverse sides of the transverse floating frame 2 and abut against the transverse floating frame 2 in opposite directions.

[0028] In this embodiment, the transverse support rail 15 provides a fixed motion reference for the transverse floating frame 2, and the load-bearing slipper 16 bears the vertical load transmitted from the transverse floating frame 2 and the converter transformer, and slides along the transverse support rail 15. The parallel transverse support rails 15 keep the main direction of movement of the transverse floating frame 2 transversely, reducing the possibility of rotational deviation during transverse movement. The two side centering elastic members 4 act on opposite sides of the transverse floating frame 2 respectively. When the transverse floating frame 2 shifts to one side, the elastic action state of the corresponding side and the other side changes, and together they cause the transverse floating frame 2 to return to the centering position after the external transverse action weakens or is removed.

[0029] In one embodiment, the horizontal width of the avoidance section 13 is greater than the diameter of the follower roller 11, so that there is a triggering gap between the follower roller 11 and the triggering inclined surfaces 14 on both sides in the center state; the fixed base frame 1 is provided with horizontal limiting blocks 17 on both sides of the horizontal floating frame 2, and the triggering gap is less than the initial gap between the horizontal floating frame 2 and the corresponding horizontal limiting block 17.

[0030] In this embodiment, when the follower roller 11 is within the range corresponding to the avoidance section 13, even if the transverse floating frame 2 experiences a small lateral position change, the follower roller 11 will not immediately enter the trigger ramp 14, thus the locking block 8 can remain in the disengaged state. Only after the transverse floating frame 2 further shifts and crosses the trigger gap does the follower roller 11 begin to enter the trigger ramp 14. Since this trigger gap is smaller than the initial gap between the transverse floating frame 2 and the transverse limit block 17, the locking action occurs before the transverse floating frame 2 reaches its lateral limit position, creating a sequential relationship between longitudinal sliding restriction and lateral limit restriction.

[0031] In one embodiment, the two ends of the bidirectional wedge trigger rail 12 are fixed to the fixed base frame 1 by support columns 18 respectively. The transverse floating frame 2 is provided with a clearance groove 19 extending in the transverse direction corresponding to the support columns 18. The bidirectional wedge trigger rail 12 spans above the longitudinal sliding seat 7, and its effective length in the longitudinal direction is greater than the allowable sliding stroke of the longitudinal sliding seat 7, so that the follower roller 11 is in correspondence with the bidirectional wedge trigger rail 12 at each longitudinal position of the longitudinal sliding seat 7.

[0032] In this embodiment, the support column 18 keeps the bidirectional wedge trigger rail 12 in a fixed position relative to the fixed base frame 1, while the transverse floating frame 2 can move laterally relative to the support column 18. The clearance groove 19 provides relative movement space between the support column 18 and the transverse floating frame 2, ensuring that the support column 18 does not move laterally with the transverse floating frame 2, nor does it obstruct the movement of the transverse floating frame 2 within its normal allowable stroke. The bidirectional wedge trigger rail 12 has an effective length along the longitudinal direction covering the allowable sliding range of the longitudinal sliding seat 7. When the converter transformer is in different longitudinal positions due to temperature changes, the follower roller 11 remains below the bidirectional wedge trigger rail 12. Therefore, the condition for lateral offset trigger locking is not limited to a specific longitudinal position of the longitudinal sliding seat 7; the longitudinal sliding seat 7 can be affected by the bidirectional wedge trigger rail 12 at different positions within its allowable thermal expansion sliding range.

[0033] In one embodiment, a vertically extending locking guide cavity 20 is formed in the longitudinal sliding seat 7, and the locking pressure block 8 is slidably engaged in the locking guide cavity 20. The lower end of the locking pressure block 8 is provided with a friction locking pad 21 opposite to the locking surface 10. The locking reset elastic member 9 is supported between the locking pressure block 8 and the longitudinal sliding seat 7, and after the follower roller 11 leaves the trigger inclined surface 14, the friction locking pad 21 is disengaged from the locking surface 10.

[0034] In this embodiment, the locking guide cavity 20 restricts the main direction of movement of the locking block 8, so that the action applied by the bidirectional wedge trigger rail 12 via the follower roller 11 is converted into the vertical displacement of the locking block 8. The friction locking pad 21 is disposed at the lower end of the locking block 8, with its working surface facing the locking surface 10. Under normal conditions, the locking reset elastic member 9 keeps the locking block 8 in a higher position, and the friction locking pad 21 does not press against the locking surface 10; after the follower roller 11 enters the trigger ramp 14, the locking block 8 moves downward against the action of the locking reset elastic member 9 until the friction locking pad 21 presses against the locking surface 10. When the follower roller 11 returns to the avoidance section 13, the trigger ramp 14 no longer maintains the downward pressure on the locking block 8, and the locking reset elastic member 9 causes the locking block 8 to move upward, and the friction locking pad 21 disengages from the locking surface 10. This reset method makes the recovery of longitudinal sliding capability directly correspond to the centering process of the transverse floating frame 2.

[0035] In one embodiment, a transverse buffer block 22 is provided on the side of the transverse limiting block 17 facing the transverse floating frame 2. There is a gap between the transverse buffer block 22 and the transverse floating frame 2 in the center position. After the follower roller 11 enters the triggering inclined surface 14 and the locking block 8 presses against the locking surface 10, the transverse floating frame 2 continues to move laterally before contacting the corresponding transverse buffer block 22.

[0036] In this embodiment, the lateral buffer block 22 is located on the lateral movement path of the lateral floating frame 2, but it does not continuously abut against the lateral floating frame 2 in the neutral state. When the lateral floating frame 2 undergoes a small lateral movement, the lateral buffer block 22 will not affect the normal movement of the lateral guide pair 3. After the lateral floating frame 2 continues to move, the follower roller 11 first enters the trigger ramp 14, causing the longitudinal sliding seat 7 to enter a constrained state; only when the lateral displacement continues to increase does the lateral floating frame 2 come into contact with the lateral buffer block 22. The lateral buffer block 22 undertakes the subsequent lateral action, and the lateral limiting block 17 limits the further lateral movement range.

[0037] In one embodiment, the avoidance section 13 is a horizontal straight surface, and the two triggering ramps 14 gradually decrease in length from the avoidance section 13 to both sides and are symmetrical about the centerline of the avoidance section 13. The avoidance section 13 and the two triggering ramps 14 are connected by a circular arc transition.

[0038] In this embodiment, the horizontal clearance section 13 corresponds to the central region of the transverse floating frame 2, ensuring that the follower roller 11 will not continuously push the locking block 8 due to changes in the lower surface height of the bidirectional wedge trigger rail 12 when it is located in this region. The two trigger ramps 14 correspond to the offset of the transverse floating frame 2 in two opposite transverse directions, so that regardless of which side the transverse floating frame 2 moves to, the follower roller 11 can enter the corresponding trigger ramp 14 from the clearance section 13. The arc transition is used to ensure that the follower roller 11 maintains continuous rolling when entering the trigger ramp 14 from the clearance section 13, reducing sudden geometric changes.

[0039] In one embodiment, a longitudinal sliding seat 7 spans a longitudinal guide rail 6, and load-bearing rollers 23 are arranged longitudinally at intervals between the longitudinal sliding seat 7 and the longitudinal guide rail 6. Lateral guide wheels 24 are respectively provided on the lateral sides of the longitudinal sliding seat 7 to roll in contact with the side of the longitudinal guide rail 6. The load-bearing rollers 23 bear vertical loads, and the two lateral guide wheels 24 restrict the lateral deflection of the longitudinal sliding seat 7 during the thermal expansion sliding process.

[0040] In this embodiment, the bearing roller 23 is located between the longitudinal sliding seat 7 and the longitudinal guide rail 6, allowing the vertical load transmitted from the converter transformer to the longitudinal sliding seat 7 to be transferred to the longitudinal guide rail 6 via the bearing roller 23, while simultaneously allowing the longitudinal sliding seat 7 to roll longitudinally. Multiple bearing rollers 23 are spaced apart longitudinally, creating multiple bearing positions below the longitudinal sliding seat 7. Lateral guide wheels 24 are located on both sides of the longitudinal guide rail 6, maintaining rolling contact with the sides of the longitudinal guide rail 6 during longitudinal sliding. This limits significant lateral deflection of the longitudinal sliding seat 7 relative to the longitudinal guide rail 6 and ensures that the follower roller 11 maintains a corresponding positional relationship with the bidirectional wedge trigger rail 12.

[0041] In one embodiment, vibration damping bearing pads 25 are respectively provided between the reference bearing seat 5 and the longitudinal sliding seat 7 and the converter transformer installation position. The reference bearing seat 5 and the longitudinal sliding seat 7 are also respectively provided with anti-pull-out limiting members 26 spanning above the converter transformer installation position. A vertical movable gap is left between the anti-pull-out limiting member 26 and the converter transformer installation position so that the vibration damping bearing pad 25 is not rigidly clamped by the anti-pull-out limiting member 26 when it bears normal vertical vibration deformation.

[0042] In this embodiment, the two longitudinal mounting positions of the converter transformer are respectively supported on corresponding vibration-damping bearing pads 25. The weight of the equipment is transferred to the reference bearing seat 5 and the longitudinal sliding seat 7 via the vibration-damping bearing pads 25. When small vertical vibrations occur during normal operation, the vibration-damping bearing pads 25 can generate corresponding elastic deformation. The pull-out limiting member 26 is positioned above the mounting position of the converter transformer and has a vertical movement gap between it and the mounting position. Therefore, it will not continuously and rigidly press the mounting position of the converter transformer within the normal vertical vibration range. When the mounting position shows an upward displacement tendency exceeding the movement gap, the pull-out limiting member 26 can limit its upward movement range.

[0043] In one embodiment, the locking surface 10 extends continuously along the longitudinal guide rail 6, and the longitudinal length of the locking surface 10 covers the entire allowable sliding range of the longitudinal sliding seat 7.

[0044] In this embodiment, the locking surface 10 is not only provided at a single locking position on the longitudinal guide rail 6, but is continuously provided along the longitudinal direction. When the longitudinal sliding seat 7 moves to different positions within its allowable stroke due to the thermal expansion and contraction of the converter transformer, there is a corresponding locking surface 10 under the friction locking pad 21. Therefore, when the transverse floating frame 2 shifts laterally under different thermal expansion conditions, the locking block 8 can move downward at the current position and press the friction locking pad 21 against the locking surface 10, without first returning the longitudinal sliding seat 7 to the fixed longitudinal position.

[0045] In summary, when the converter transformer is in normal operation, the transverse floating frame 2 is in the center position under the action of the centering elastic element 4, the follower roller 11 corresponds to the avoidance section 13, and the friction locking pad 21 separates from the locking surface 10. After the converter transformer changes length due to temperature changes, one side of the reference bearing seat 5 maintains the longitudinal reference, while the other side of the longitudinal sliding seat 7 moves along the longitudinal guide rail 6 via the bearing roller 23, and the lateral guide wheel 24 restricts its lateral deflection. When a large lateral force causes the converter transformer and the transverse floating frame 2 to deviate from the center position, the bidirectional wedge trigger rail 12 fixed to the fixed base frame 1 and the follower roller 11 moving with the transverse floating frame 2 generate relative lateral displacement. After the follower roller 11 enters the trigger inclined surface 14, the locking block 8 moves downward in the locking guide cavity 20, and the friction locking pad 21 presses against the locking surface 10, causing the longitudinal sliding seat 7 to change from a state that can move along the longitudinal guide rail 6 to a longitudinally constrained state. When the lateral floating frame 2 continues to deviate, the lateral buffer block 22 and the lateral limiting block 17 will then support and limit the subsequent lateral displacement. When the lateral action is released or reduced, the centering elastic element 4 drives the lateral floating frame 2 back to the centering position, the follower roller 11 returns from the triggering inclined surface 14 to the avoidance section 13, and the locking reset elastic element 9 drives the locking pressure block 8 to move upward, causing the friction locking pad 21 to leave the locking surface 10. After this, the longitudinal sliding seat 7 can again move along the longitudinal guide rail 6 with the thermal expansion and contraction of the converter transformer, thus completing one working cycle from normal sliding, lateral triggering locking to unlocking.

[0046] The specific embodiments described above further illustrate the inventive purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, or improvements made by those skilled in the art within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A mounting base for a DC converter transformer, characterized in that, The system includes a fixed base frame (1) and a transverse floating frame (2). The transverse floating frame (2) is slidably supported on the fixed base frame (1) via a transverse guide pair (3). A centering elastic element (4) is provided between the transverse floating frame (2) and the fixed base frame (1) to keep the transverse floating frame (2) in a centering position. A reference bearing seat (5) and a longitudinal guide rail (6) are provided at intervals along the length direction of the converter transformer on the transverse floating frame (2). A longitudinal sliding seat (7) is slidably supported on the longitudinal guide rail (6). The reference bearing seat (5) and the longitudinal sliding seat (7) respectively support two longitudinal installation parts of the converter transformer. A locking block (8) is vertically slidably provided on the longitudinal sliding seat (7). The locking block (8) is connected to the longitudinal sliding seat (7) via a locking and resetting elastic element (9). The locking surface (10) on the upper surface of the guide rail (6) remains separated. The upper end of the locking block (8) is provided with a follower roller (11). The fixed base frame (1) is provided with a bidirectional wedge trigger rail (12) extending longitudinally and located above the follower roller (11). The lower surface of the bidirectional wedge trigger rail (12) has a clearance section (13) corresponding to the center position of the transverse floating frame (2) and trigger ramps (14) connected to the transverse sides of the clearance section (13). When the transverse floating frame (2) shifts laterally and the follower roller (11) enters any of the trigger ramps (14), the trigger ramps (14) press down on the locking block (8) and press it against the locking surface (10), restricting the longitudinal sliding seat (7) from sliding along the longitudinal guide rail (6).

2. The mounting base for the DC converter transformer according to claim 1, characterized in that, The transverse guide pair (3) includes transverse support rails (15) fixed to the fixed base frame (1) and parallel to each other, and load-bearing slippers (16) fixed to the bottom of the transverse floating frame (2). The load-bearing slippers (16) are slidably engaged with the transverse support rails (15) respectively, so that the transverse floating frame (2) maintains transverse movement relative to the fixed base frame (1). The composite elastic members (4) are arranged in pairs on the transverse sides of the transverse floating frame (2) and abut against the transverse floating frame (2) in opposite directions.

3. The mounting base for the DC converter transformer according to claim 2, characterized in that, The straight width of the avoidance section (13) in the lateral direction is greater than the diameter of the follower roller (11), so that in the neutral state, there is a triggering gap between the follower roller (11) and the triggering inclined surfaces (14) on both sides; the fixed base frame (1) is provided with lateral limiting blocks (17) on both sides of the lateral floating frame (2), and the triggering gap is less than the initial gap between the lateral floating frame (2) and the corresponding lateral limiting block (17).

4. The mounting base for the DC converter transformer according to claim 3, characterized in that, The two ends of the bidirectional wedge trigger rail (12) are fixed to the fixed base frame (1) by support columns (18). The transverse floating frame (2) has a clearance groove (19) extending in the transverse direction corresponding to the support column (18). The bidirectional wedge trigger rail (12) spans above the longitudinal sliding seat (7), and its effective length in the longitudinal direction is greater than the allowable sliding stroke of the longitudinal sliding seat (7), so that the follower roller (11) is in correspondence with the bidirectional wedge trigger rail (12) at each longitudinal position of the longitudinal sliding seat (7).

5. The mounting base for the DC converter transformer according to claim 4, characterized in that, A vertically extending locking guide cavity (20) is formed in the longitudinal sliding seat (7). The locking pressure block (8) is slidably fitted in the locking guide cavity (20). The lower end of the locking pressure block (8) is provided with a friction locking pad (21) opposite to the locking surface (10). The locking reset elastic element (9) is supported between the locking pressure block (8) and the longitudinal sliding seat (7), and the friction locking pad (21) is disengaged from the locking surface (10) after the follower roller (11) leaves the trigger inclined surface (14).

6. The mounting base for the DC converter transformer according to claim 3, characterized in that, The lateral limiting block (17) has a lateral buffer block (22) on one side facing the lateral floating frame (2). There is a gap between the lateral buffer block (22) and the lateral floating frame (2) in the center position. After the follower roller (11) enters the trigger inclined surface (14) and the locking block (8) presses against the locking surface (10), the lateral floating frame (2) continues to move laterally and then contacts the corresponding lateral buffer block (22).

7. The mounting base for the DC converter transformer according to claim 4, characterized in that, The avoidance section (13) is a horizontal straight surface. The two triggering slopes (14) gradually decrease from the avoidance section (13) to the lateral sides and are symmetrical about the center line of the avoidance section (13). The avoidance section (13) and the two triggering slopes (14) are connected by a circular arc transition.

8. The mounting base for the DC converter transformer according to claim 1, characterized in that, The longitudinal sliding seat (7) spans the longitudinal guide rail (6). There are load-bearing rollers (23) arranged longitudinally between the longitudinal sliding seat (7) and the longitudinal guide rail (6). There are side guide wheels (24) on the lateral sides of the longitudinal sliding seat (7) that roll in contact with the side of the longitudinal guide rail (6). The load-bearing rollers (23) bear the vertical load. The two side guide wheels (24) restrict the lateral deflection of the longitudinal sliding seat (7) during the thermal expansion sliding process.

9. The mounting base for the DC converter transformer according to claim 8, characterized in that, Vibration damping bearing pads (25) are respectively provided between the reference bearing seat (5) and the longitudinal sliding seat (7) and the converter transformer installation position. The reference bearing seat (5) and the longitudinal sliding seat (7) are also respectively provided with anti-pull-out limiting members (26) spanning above the converter transformer installation position. A vertical movable gap is left between the anti-pull-out limiting member (26) and the converter transformer installation position so that the vibration damping bearing pad (25) is not rigidly clamped by the anti-pull-out limiting member (26) when it bears normal vertical vibration deformation.

10. The mounting base for the DC converter transformer according to claim 1, characterized in that, The locking surface (10) extends continuously along the longitudinal guide rail (6), and the longitudinal length of the locking surface (10) covers the entire allowable sliding range of the longitudinal sliding seat (7).

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