A coil pressing device for dry-type transformer

Abstract

This invention provides a dry-type transformer coil clamping device, comprising a base, which is horizontally arranged; a clamping block, which is placed on the upper surface of the base; a driving mechanism, which includes a positioning sleeve disposed on the base, a horizontally placed clamping rod disposed within the positioning sleeve, the end of the clamping rod contacting and connecting to one side of the clamping block for pushing the clamping block forward, the clamping rod being connected to a second connecting rod, the second connecting rod being connected to a first connecting rod, a strip-shaped hole disposed at the middle position of the first connecting rod along the length direction of the first connecting rod, a first swing rod disposed in the strip-shaped hole, the first swing rod being connected to a driven wheel, the driven wheel being connected to a swing assembly, the swing assembly being connected to a drive motor; and a lowering mechanism, which includes a large gear sleeved on the output shaft of the drive motor. The advantages are that it not only achieves the clamping of the transformer coil, but also has a simple structure and is easy to operate.

Description

Technical Field

[0001] The invention relates to the technical field of coil compression, and in particular to a dry-type transformer coil compression device. Background Art

[0002] As the manufacturing quality requirements of transformers in various industries are getting higher and higher, especially the requirements for coils are higher, in order to improve its short-circuit resistance and other requirements, the coils are required to be wound tightly. The method used in the prior art is to press the coils through a pressing device after the coils are wound. In the prior art, the coils are generally pressed by a screw. Although the coils can be pressed, the operation is inconvenient. There is no buffer and the coils are easily squeezed excessively.

[0003] The patent publication number CN210956406U was retrieved, and the patent name was a public material for a coil clamping device for a dry-type transformer. The patent specifically disclosed a coil clamping device for a dry-type transformer, including a fixed bottom plate, a positioning frame fixedly connected to the bottom center of the fixed bottom plate, a movable plate provided at the top of the fixed bottom plate, a column fixedly connected to the top center of the fixed bottom plate, a coil body wound around the surface of the column, a fixed top plate provided at the top of the movable plate, a sliding rod fixedly connected to the top of the fixed bottom plate and both sides of the column, the top of the sliding rod is connected to the fixed top plate, and the two Material toggling mechanism, its both ends are connected with the support frame, and the top of the support frame is rotatably connected to the support frame, and the support frame is convenient to carrying out the operation as long as the bearing capacity is high, and can be easily broken down.

[0004] The patent publication number CN115863023A was retrieved, and the patent name is a public material of a dry-type transformer with a coil clamping function, and specifically discloses a dry-type transformer with a coil clamping function, including a mounting base and a connecting plate arranged above the mounting base, multiple groups of iron cores are arranged at equal distances between the connecting plate and the mounting base, and the outer walls of the multiple groups of iron cores are sleeved with windings, and the inside and outside of the mounting base and the connecting plate are provided with a clamping mechanism, and the clamping mechanism includes two groups of rotating rods that are symmetrically connected to the two sides of the inside of the connecting plate and extend to the inside of the mounting base, and the outer walls of the two groups of rotating rods are sleeved with first telescopic springs, and the outer walls of the multiple groups of rotating rods are provided with a pressure plate, and the pressure plate is located between the mounting base and the connecting plate, and the one-way limit assembly includes a first synchronous wheel fixedly connected to the bottom of the multiple groups of rotating rods, and the outer walls of the multiple groups of the first synchronous wheels are sleeved with a synchronous belt, and the interior of the synchronous belt is sleeved with a second synchronous wheel rotatably connected to the mounting base. The bottom of the second synchronous wheel is fixedly connected with the second bevel gear, and the interior of the mounting base is provided with a first bevel gear meshing with the second bevel gear, and the interior of the mounting base is rotatably connected with a connecting rod fixedly connected with the first bevel gear, and a rectangular block extending to one end of the outer wall of the mounting base is provided inside the connecting rod, and a ratchet is fixedly connected to one end of the outer wall of the rectangular block, and a connecting shaft is rotatably connected to one end of the outer wall of the mounting base, and a pawl is fixedly connected to the outer wall of the connecting shaft and engaged with the ratchet. One end of the outer wall of the pawl is provided with a torsion spring sleeved on the outer wall of the connecting shaft, and a plurality of pressing rods extending to the outside and inside of the rotating rod are fixedly connected to the interior of the pressure plate. By setting a clamping mechanism, when a short circuit occurs and the winding is deformed and loosened, multiple groups of first telescopic springs will push the pressure plate downward along the outer wall of the rotating rod, and the pressure plate moves downward to squeeze the winding, so that the windings are tightened to each other, thereby avoiding the occurrence of a cumulative effect, which leads to a vicious cycle and an insulation breakdown accident.

[0005] By analyzing the above-mentioned public materials, it can be known that although the transformer coil compression operation can be achieved, the structure in the public materials easily leads to excessive compression of the coil. In addition, the operation is inconvenient and the structure is complicated. Summary of the invention

[0006] In view of this, the present invention provides a dry-type transformer coil pressing device, which can not only realize the pressing of the transformer coil but also has a simple structure and is easy to operate.

[0007] In order to solve the above technical problems, the present invention provides a dry-type transformer coil pressing device, comprising:

[0008] A base, the base being arranged horizontally;

[0009] A pressing block, the pressing block is placed on the upper end surface of the base;

[0010] A driving mechanism, the driving mechanism comprising a positioning sleeve arranged on a base, a horizontally placed pressure rod being arranged in the positioning sleeve, an end of the pressure rod being in contact with one side of a connected pressure block, and being used to push the pressure block forward, the pressure rod being connected to a second connecting rod, the second connecting rod being connected to a first connecting rod, a strip hole arranged along a length direction of the first connecting rod being arranged at an intermediate position of the first connecting rod, a first swing rod being arranged in the strip hole, the first swing rod being connected to a driven wheel, the driven wheel being connected to a swing assembly, and the swing assembly being connected to a driving motor;

[0011] The falling mechanism comprises a large gear sleeved on the output shaft of the driving motor, the large gear is meshed with a small gear, the small gear is connected with an auxiliary pressing sleeve, and a coil is placed inside the auxiliary pressing sleeve.

[0012] Furthermore, the swing assembly includes a second swing arm installed at the end of the output shaft of the driving motor, the end of the second swing arm is connected to the third connecting rod via a pin shaft, the third connecting rod is connected to the third swing arm via a pin shaft, the third swing arm is fixedly connected to the driven wheel, and the end of the third swing arm is fixed at the center position of the driven wheel to drive the driven wheel to rotate.

[0013] Furthermore, the first swing arm has a rod-shaped structure, and a latch is installed on the rod-shaped head, and the latch is inserted into the bar-shaped hole of the first connecting rod. The first railing is driven forward by the rotation of the first swing arm, and the first swing arm rotates counterclockwise.

[0014] Furthermore, the end of the first swing rod is fixed on the center of the driven wheel, and an acute angle is formed between the first swing rod and the third swing rod.

[0015] Furthermore, the lower end of the first connecting rod is connected to the third connecting rod through a pin shaft, the third connecting rod is a door frame type structure, and the lower end rod passes through the pressure rod, and the lower end rod of the third connecting rod can rotate on the pressure rod.

[0016] Furthermore, the positioning sleeve is provided with a hole, the pressure rod passes through the positioning sleeve, there are two positioning sleeves, and the pressure rod can move horizontally in the positioning sleeve.

[0017] Furthermore, a spring bin is installed at the end of the pressure rod, the spring bin is an L-shaped structure, and a spring is arranged inside the spring bin. The spring is horizontally placed in the spring bin, and the outer end of the spring is fixedly connected to a plate and connected to the pressure block through plate contact.

[0018] Furthermore, a shell is fixedly provided at the upper end of the base, a driving mechanism is placed inside the shell, and there are several shells, which are arranged opposite to each other with a space in between for placing the coil. A hole is opened on the inner side surface of the shell, the pinion is mounted on the shell, and the outer ring of the pinion is exposed outside the hole.

[0019] Furthermore, the auxiliary pressing sleeve is in the shape of a door frame structure with an open lower end, the coil is inserted into the auxiliary pressing sleeve, and a rack is provided on the outer side of the auxiliary pressing sleeve for engaging with a pinion.

[0020] The beneficial effects of the above technical solution of the present invention are as follows:

[0021] 1. It can realize the compression of transformer coils and realize the compression operation of coils through the driving mechanism.

[0022] 2. Avoid the coil from being flattened. The structure is simple and the operation is convenient. By slowly pressing the coil, excessive pressing is avoided and the coil can be given space to adjust the wire position during the pressing process. The coil descends at a uniform speed and has a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 for Figure 1 axonometric drawing;

[0025] Figure 3 for Figure 2 Schematic diagram of the structure after removing the shell;

[0026] Figure 4 It is a schematic diagram of the internal structure;

[0027] Figure 5 is a structural schematic diagram of the driving mechanism;

[0028] Figure 6 It is a structural schematic diagram of the auxiliary pressing sleeve;

[0029] In the figure: 1. shell; 2. auxiliary pressure sleeve; 3. coil; 4. pressure block; 5. base; 6. small gear; 7. large gear; 8. driving motor; 9. first connecting rod; 10. second connecting rod; 11. pressure rod; 12. positioning sleeve; 13. spring compartment; 14. rack; 15. third connecting rod; 16. first swing arm; 17. spring; 18. second swing arm; 19. fixing plate; 20. third swing arm; 21. driven wheel. DETAILED DESCRIPTION

[0030] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will be combined with the appended drawings of the embodiments of the present invention. Figure 1-6. A clear and complete description of the technical solutions of the embodiments of the present invention is provided. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by a person of ordinary skill in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0031] like Figure 1 -6:

[0032] A dry-type transformer coil clamping device comprises a base 5, which is horizontally arranged; a pressing block 4, which is placed on the upper end surface of the base 5; a driving mechanism, which comprises a positioning sleeve 12 arranged on the base 5, a horizontally placed pressing rod 11 is arranged in the positioning sleeve 12, and the end of the pressing rod 11 contacts one side of the pressing block 4 for pushing the pressing block 4 forward, the pressing rod 11 is connected to a second connecting rod 10, the second connecting rod 10 is connected to a first connecting rod 9, a strip hole arranged along the length direction of the first connecting rod 9 is arranged at the middle position of the first connecting rod 9, a first swing rod 16 is arranged in the strip hole, the first swing rod 16 is connected to a driven wheel 21, the driven wheel 21 is connected to a swing assembly, and the swing assembly is connected to a driving motor 8; a falling mechanism, the falling mechanism comprises a large gear 7 sleeved on the output shaft of the driving motor 8, the large gear 7 is meshed with a small gear 6, the small gear 6 is connected to an auxiliary pressing sleeve 2, and a coil 3 is placed inside the auxiliary pressing sleeve 2.

[0033] In this embodiment, the base 5 plays a supporting role. The base 5 is two parallel bar blocks. The upper end surface is provided with a raised track, and the track is concentrated in the middle position. The two sides of the track are the positions of the positioning sleeve 12. A pressure rod 11 is sleeved in the positioning sleeve 12 on the base 5. The pressure rod 11 can move horizontally. The moving power of the pressure rod 11 comes from the driving mechanism. The driving structure is a multi-link structure. Specifically, the second connecting rod 10 is directly connected to the pressure rod 11, and the first connecting rod 9 is connected to the second connecting rod 10. The first connecting rod 9 is provided with a strip hole, and the third connecting rod 15 is connected through the strip hole. The third connecting rod 15 is connected to the driven wheel 21. The driven wheel 21 is also equipped with a third swing rod 20. The third swing rod 20 is connected to the third connecting rod 15. The third connecting rod 15 is connected to the second swing rod 18. The second swing rod 18 is fixedly connected to the driving motor 8. A large gear 7 is provided on the driving motor 8. The large gear 7 is meshed with a small gear 6, and the coil 3 is driven to fall through the small gear 6.

[0034] The swing assembly includes a second swing arm 18 installed at the end of the output shaft of the driving motor 8, the end of the second swing arm 18 is connected to the third connecting rod 15 through a pin shaft, the third connecting rod 15 is connected to the third swing arm 20 through a pin shaft, the third swing arm 20 is fixedly connected to the driven wheel 21, and the end of the third swing arm 20 is fixed at the center position of the driven wheel 21, which is used to drive the driven wheel 21 to rotate.

[0035] In this embodiment, the swing assembly includes a second swing rod 18, the end of which is fixedly connected to the end of the output shaft of the drive motor 8. The drive motor 8 drives the second swing rod 18 to swing, specifically counterclockwise, and the swing amplitude is fan-shaped.

[0036] The first swing rod 16 is rod-shaped, and a latch is installed on the rod head. The latch is inserted into the bar hole of the first connecting rod 9. The first railing is driven forward by the rotation of the first swing rod 16, and the first swing rod 16 rotates counterclockwise.

[0037] In this embodiment, the first swing rod 16 is structured as a single rod, and a latch is fixedly mounted at one end thereof, the latch can be inserted into the bar-shaped hole, and the other end of the first swing rod 16 is fixed to the center position of the driven wheel 21 by a screw.

[0038] The end of the first swing rod 16 is fixed on the center of the driven wheel 21 , and an acute angle is formed between the first swing rod 16 and the third swing rod 20 .

[0039] In this embodiment, the first swing rod 16 and the third swing rod 20 are arranged at an acute spatial angle, and the first swing rod 16 and the third swing rod 20 are respectively arranged in two parallel planes.

[0040] The lower end of the first connecting rod 9 is connected to the third connecting rod 15 through a pin shaft. The third connecting rod 15 is a door frame type structure, and the lower end rod passes through the pressure rod 11, and the lower end rod of the third connecting rod 15 can rotate on the pressure rod 11.

[0041] In this embodiment, in order to realize multi-link movement, the first link 9 and the third link 15 are connected by a pin shaft, and in order to improve stability, the third link 15 is designed as a door frame type structure, and the rod at the lower end passes through the pressure rod 11, which is used to pull the pressure rod 11 forward.

[0042] The positioning sleeve 12 is provided with a hole, and the pressure rod 11 passes through the positioning sleeve 12 . There are two positioning sleeves 12 , and the pressure rod 11 can move horizontally in the positioning sleeves 12 .

[0043] In this embodiment, the positioning sleeve 12 is used to limit the position of the pressing rod 11, and the pressing rod 11 can only move horizontally.

[0044] A spring bin 13 is installed at the end of the pressure rod 11. The spring bin 13 is an L-shaped structure, and a spring 17 is arranged inside the spring bin 13. The spring 17 is horizontally placed in the spring bin 13. The outer end of the spring 17 is fixedly connected to a plate and is connected to the pressure block 4 through plate contact.

[0045] In this embodiment, the spring chamber 13 can play a buffering effect, so that the coil 3 is slowly compressed, so that the position of the wires can be adjusted during the compression of the coil 3.

[0046] A shell 1 is also fixedly provided at the upper end of the base 5, and a driving mechanism is placed inside the shell 1. There are several shells 1, which are arranged opposite to each other with a space in between for placing the coil 3. A hole is opened on the inner side surface of the shell 1, and the pinion 6 is installed on the shell 1, and the outer ring of the pinion 6 leaks out of the hole.

[0047] In this embodiment, the housing 1 is used to cover the driving mechanism to prevent external dust from entering. In addition, during the pressing process, the coil 3 is driven by the pinion 6 to slowly descend. A driving mechanism is arranged inside each housing 1.

[0048] The auxiliary pressing sleeve 2 is in the shape of a door frame structure with an open lower end. The coil 3 is inserted into the auxiliary pressing sleeve 2 . A rack 14 is provided on the outer side of the auxiliary pressing sleeve 2 for meshing with the pinion 6 .

[0049] In this embodiment, the auxiliary pressing sleeve 2 is sleeved on the coil 3 to play an auxiliary role in pressing the coil 3 .

[0050] The working method (or working principle) of a dry-type transformer coil pressing device provided by the present invention is as follows:

[0051] When the present technology is working, the coil 3 is first loaded into the auxiliary pressing sleeve 2, and racks 14 are set on both sides of the auxiliary pressing sleeve 2, and then the auxiliary pressing sleeve 2 is placed in the space formed between the shells 1, the external line of the driving motor 8 is connected to the controller, and then the start and stop button of the controller is used to operate the driving motor 8. Specifically, the output end of the driving motor 8 rotates counterclockwise, and then the rotation of the large gear 7 drives the small gear 6 to rotate clockwise, so as to achieve the slow and uniform descent of the auxiliary pressing sleeve 2. Then the output end of the driving motor 8 is fixedly connected with the second swing rod 18, and through the swing of the second swing rod 18, the third swing rod 20 can be driven to rotate counterclockwise through the third connecting rod 15, thereby realizing the counterclockwise rotation of the first swing rod 16. Since the pin at the end of the first swing rod 16 is inserted into the bar hole, the first swing rod 16 can drive the first connecting rod 9 to move, thereby realizing the forward movement of the second connecting rod 10, and finally, driving the pressing rod 11 forward, and the pressing rod 11 pushes the pressing block 4 to move inward as a whole, so as to achieve the compression of the coil 3.

[0052] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0053] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A dry-type transformer coil pressing device, characterized in that: include, A base (5), wherein the base (5) is arranged horizontally; A pressing block (4), wherein the pressing block (4) is placed on the upper end surface of the base (5); A driving mechanism, the driving mechanism comprising a positioning sleeve (12) arranged on a base (5), a horizontally placed pressure rod (11) being arranged in the positioning sleeve (12), an end of the pressure rod (11) being in contact with one side of a pressure block (4) for pushing the pressure block (4) forward, the pressure rod (11) being connected to a second connecting rod (10), the second connecting rod (10) being connected to a first connecting rod (9), a strip hole being arranged along the length direction of the first connecting rod (9) being arranged in the middle position of the first connecting rod (9), a first swing rod (16) being arranged in the strip hole, the first swing rod (16) being connected to a driven wheel (21), the driven wheel (21) being connected to a swing assembly, and the swing assembly being connected to a driving motor (8); A falling mechanism, the falling mechanism comprising a large gear (7) sleeved on the output shaft of a driving motor (8), the large gear (7) being meshed with a small gear (6), the small gear (6) being connected to an auxiliary pressing sleeve (2), and a coil (3) being placed inside the auxiliary pressing sleeve (2); The swing assembly comprises a second swing rod (18) mounted on the end of the output shaft of the driving motor (8); the end of the second swing rod (18) is connected to a third connecting rod (15) via a pin shaft; the third connecting rod (15) is connected to a third swing rod (20) via a pin shaft; the third swing rod (20) is fixedly connected to a driven wheel (21); and the end of the third swing rod (20) is fixed at the center of the driven wheel (21) to drive the driven wheel (21) to rotate; The lower end of the first connecting rod (9) is connected to the third connecting rod (15) via a pin shaft, the third connecting rod (15) is a door frame type structure, and the lower end rod passes through the pressure rod (11), and the lower end rod of the third connecting rod (15) can rotate on the pressure rod (11); A spring bin (13) is installed at the end of the pressure rod (11), the spring bin (13) is an L-shaped structure, and a spring (17) is arranged inside the spring bin (13), the spring (17) is horizontally placed in the spring bin (13), and the outer end of the spring (17) is fixedly connected to a plate and is connected to the pressure block (4) through plate contact; The auxiliary pressing sleeve (2) is in the shape of a door frame structure with an open lower end, the coil (3) is inserted into the auxiliary pressing sleeve (2), and a rack (14) is provided on the outer side surface of the auxiliary pressing sleeve (2) for engaging with the pinion (6).

2. A dry-type transformer coil pressing device according to claim 1, characterized in that: The first swing rod (16) is rod-shaped, and a latch is installed on the rod head. The latch is inserted into the strip hole of the first connecting rod (9). The first connecting rod (9) is driven forward by the rotation of the first swing rod (16), and the first swing rod (16) rotates counterclockwise.

3. A dry-type transformer coil pressing device according to claim 2, characterized in that: The end of the first swing rod (16) is fixed on the center of the driven wheel (21), and an acute angle is formed between the first swing rod (16) and the third swing rod (20).

4. A dry-type transformer coil pressing device according to claim 3, characterized in that: The positioning sleeve (12) is provided with a hole, the pressure rod (11) passes through the positioning sleeve (12), there are two positioning sleeves (12), and the pressure rod (11) can move horizontally in the positioning sleeve (12).

5. A dry-type transformer coil pressing device according to claim 4, characterized in that: A housing (1) is fixedly provided at the upper end of the base (5), a driving mechanism is placed inside the housing (1), and the housings (1) are provided in a plurality of numbers and are arranged opposite to each other with a spacing therebetween for placing the coil (3). A hole is provided on the inner side surface of the housing (1), the pinion (6) is mounted on the housing (1), and the outer ring of the pinion (6) is exposed outside the hole.

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