Hollow constant pressure device

Abstract

The utility model belongs to the technical field of transformer winding processing, and particularly relates to a hollow constant pressure device which comprises a drying bin, a pressing mechanism and a sliding tensioning mechanism, the drying bin is provided with a hollow structure, the pressing mechanism is arranged in the hollow structure, and the pressing mechanism comprises a base, a first bearing plate, a second bearing plate and a hydraulic oil cylinder. One end of the hydraulic oil cylinder is fixedly connected with the first pressure bearing plate, the other end of the hydraulic oil cylinder is fixedly connected with the second pressure bearing plate, through holes are formed in the first pressure bearing plate and the second pressure bearing plate, and the sliding tensioning mechanism comprises a cover plate, a vertical rod, a hinge rod, a screw rod, a movable seat and a power source. One end of the screw rod penetrates through the drying bin and is fixedly connected with the power source, the movable seat is in threaded connection with the screw rod, and the vertical rods are a plurality of loop bars which are in threaded connection with one another. The device has the advantages that limitation on the pressing mechanism is increased, and the working efficiency of the device and the quality of finished products are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer winding processing, in particular to a hollow constant pressure device. Background Art

[0002] The coil constant pressure device is mainly used for the compression process of large-scale continuous and pancake transformer coils. It is a special equipment for the production and manufacturing process of dry transformer coils. Generally, in a high-temperature dry vacuum environment, the compression cylinder applies a constant compression force of more than 50 hours to the coil to fully compress the coil and dry it. However, if the hydraulic system is running for a long time, problems such as oil pipe leakage may occur, which will affect the compression force on the coil and reduce the working efficiency of the constant pressure device. In addition, oil leakage in the hydraulic system will contaminate the finished coil and affect the quality of the finished product. Utility Model Content

[0003] The utility model aims at the above-mentioned problems and specifically designs a hollow constant pressure device to increase the restriction on the pressing mechanism, thereby improving the working efficiency of the device and the quality of the finished product.

[0004] To achieve the above-mentioned purpose, the utility model provides a hollow constant pressure device, including a drying bin, a clamping mechanism and a sliding tensioning mechanism, the drying bin having a hollow structure, the clamping mechanism being arranged in the hollow structure of the drying bin, the clamping mechanism including a base, a first pressure plate, a second pressure plate and a hydraulic cylinder, one end of the hydraulic cylinder being fixedly connected to the first pressure plate, and the other end being fixedly connected to the second pressure plate, the base being fixedly connected to the second pressure plate, and the sliding tensioning mechanism being detachably connected to the clamping mechanism.

[0005] By adopting the above technical scheme, the drying chamber provides a drying environment for the transformer coil, and the clamping mechanism provides a clamping force to the coil through the feeding movement of the hydraulic cylinder, which promotes the rapid water loss and drying of the coil. The base provides space for the installation of the sliding tensioning mechanism, and the sliding tensioning mechanism is used to increase the restriction on the clamping mechanism, thereby assisting in the drying and compacting of the coil and improving the processing efficiency of the device.

[0006] Furthermore, the outer edge of the second pressure-bearing plate is stepped, and the cylinder body of the hydraulic cylinder is fixedly connected to the step of the second pressure-bearing plate.

[0007] By adopting the above technical solution, a stepped second pressure plate is designed, with the hydraulic cylinder located on the lower step and the coil located on the upper step, separating the two. The steps of the second pressure plate increase the restriction on the flow of oil, reduce the contamination of the coil by leakage of hydraulic cylinder oil, and improve the quality of the finished coil.

[0008] Furthermore, a plurality of groups of the hydraulic cylinders are symmetrically arranged at the center of the second pressure plate.

[0009] By adopting the above technical solution, multiple groups of symmetrically arranged hydraulic cylinders work together to apply uniform pressing force to the coil to ensure the finished product effect.

[0010] Furthermore, the first pressure plate and the second pressure plate are both provided with through holes, and the sliding tensioning mechanism includes a cover plate, a vertical rod, a hinge rod, a screw rod, a movable seat and a power source. The cover plate is overlapped on the first pressure plate, one end of the vertical rod passes through the through hole and is fixedly connected to the cover plate, and the other end is hinged to the movable seat through the hinge rod, one end of the screw rod passes through the drying bin and is fixedly connected to the power source, and the movable seat is threadedly connected to the screw rod.

[0011] By adopting the above technical solution, a sliding tensioning mechanism utilizes a power source to drive the screw to rotate, and the moving seat is located on the screw to perform linear feed motion. The vertical rod, hinge rod and moving seat form a hinge structure. The vertical rod slides and sinks synchronously with the movement of the moving seat, and the fixedly connected cover plate applies pressure to the first pressure plate in the clamping mechanism to ensure the clamping state of the coil, assist in accelerating drying and dehydration, and improve the coil processing efficiency.

[0012] Furthermore, the vertical rod includes a plurality of threadedly connected sleeve rods.

[0013] By adopting the above technical solution, multiple sleeve rods can change the height of the vertical pole by screwing in and out to adapt to coils of different heights. The appropriate vertical pole height can be set according to the coil height, and the initial operating state of the sliding tensioning mechanism can be flexibly changed to avoid the problem of energy waste such as invalid pressurization due to the direct operation of the power source due to the vertical pole being too long, thereby improving the working efficiency of the equipment.

[0014] Furthermore, the power source is a motor or a turntable.

[0015] By adopting the above technical solution, the sliding tensioning mechanism can be driven mechanically or manually. The appropriate driving mode can be selected according to the actual usage. The motor runs and the screw is driven mechanically to rotate, which saves manpower and time. Manually tightening the turntable makes it easier to control the clamping force applied by the sliding tensioning mechanism to the clamping mechanism.

[0016] Furthermore, the drying chamber is provided with a visual window.

[0017] By adopting the above technical solution, the visual window makes it easy for workers to observe the clamping state of the coil and the working condition of the sliding tensioning mechanism in real time, timely understand the operating condition of the device, respond quickly to emergencies, and take effective measures to ensure the normal clamping operation of the coil and improve the yield rate.

[0018] In summary, the utility model has the following advantages and beneficial technical effects:

[0019] 1. The utility model utilizes a sliding tensioning mechanism to limit a clamping mechanism, ensuring that the clamping mechanism provides a clamping force on the coil, prompting the coil to quickly lose water and dry, thereby improving the processing efficiency of the device; the power source is a motor or a turntable, and the driving mode can be freely selected. The motor mechanically drives the screw to rotate, which saves manpower and time; manually tightening the turntable makes it easier to control the clamping force applied by the sliding tensioning mechanism to the clamping mechanism.

[0020] 2. The stepped design of the second pressure plate in the clamping mechanism separates the hydraulic cylinder from the coil, and uses the steps to increase the restriction on the flow of oil, reduce the pollution of the coil by the leakage of hydraulic cylinder oil, and improve the quality of the finished coil; multiple groups of hydraulic cylinders work together to apply uniform clamping force to the coil to ensure the finished product effect.

[0021] 3. According to the height of the coil, screw in and out the sleeve rod to flexibly change the height of the vertical pole, and manually control the initial operating state of the sliding tensioning mechanism to avoid the problem of energy waste such as invalid pressurization due to the direct operation of the power source due to the vertical pole being too long, thereby improving the working efficiency of the device.

[0022] 4. The visual window allows workers to observe the coil compression status and the working condition of the sliding tensioning mechanism in real time, so that they can respond quickly to emergencies and take effective measures to ensure the normal coil compression operation and improve the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 This is a diagram of the use state of the first embodiment of the utility model;

[0025] Figure 2 It is a front view schematic diagram of the first embodiment of the utility model;

[0026] Figure 3 It is a partial structural schematic diagram of the first embodiment of the utility model;

[0027] Figure 4 This is a usage state diagram of the second embodiment of the utility model;

[0028] Figure 5 It is a partial structural diagram of the second embodiment of the present utility model.

[0029] The reference numerals in the accompanying drawings are:

[0030] 1. Drying chamber; 2. Pressing mechanism; 21. First pressure plate; 22. Second pressure plate; 23. Hydraulic cylinder; 24. Base;

[0031] 3. Sliding tensioning mechanism; 31. Cover plate; 32. Vertical pole; 33. Hinge rod; 34. Screw rod; 35. Moving seat; 36. Power source. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-Figure 5 The utility model is further described in detail:

[0033] Example 1

[0034] like Figure 1-Figure 2 As shown, this embodiment discloses a hollow constant pressure device, including a drying bin 1, a clamping mechanism 2 and a sliding tensioning mechanism 3. The drying bin 1 has a hollow structure, and the clamping mechanism 2 is arranged in the hollow structure of the drying bin 1. The clamping mechanism 2 includes a base 24, a first pressure plate 21, a second pressure plate 22 and a hydraulic cylinder 23. The piston of the hydraulic cylinder 23 is fixedly connected to the first pressure plate 21 by screws, and the cylinder body is fixedly connected to the second pressure plate 22 by screws. The base 24 is four support rods, which are welded under the second pressure plate 22. The sliding tensioning mechanism 3 is detachably connected to the clamping mechanism 2; the outer edge of the second pressure plate 22 is stepped, and the cylinder body of the hydraulic cylinder 23 is fixedly connected to the step of the second pressure plate 22 by screws; there are four groups of hydraulic cylinders 23, which are symmetrical about the center of the second pressure plate 22;

[0035] like Figure 3 As shown, the centers of the first pressure plate 21 and the second pressure plate 22 are both provided with through holes, and the sliding tensioning mechanism 3 includes a cover plate 31, a vertical rod 32, a hinge rod 33, a screw rod 34, a movable seat 35 and a power source 36. The cover plate 31 is overlapped on the upper end surface of the first pressure plate 21, the vertical rod 32 is vertically arranged, the upper end passes through the through hole and is welded to the side of the cover plate 31 close to the first pressure plate 21, the other end is hinged to the hinge rod 33 through a pin shaft, the other end of the hinge rod 33 is hinged to the movable seat 35, one end of the screw rod 34 passes through the drying bin 1 and is fixedly connected to the output shaft of the power source 36, and the movable seat 35 is threadedly connected to the screw rod 34; the vertical rod 32 includes two sleeve rods threadedly connected to each other; the power source 36 is a motor; and the drying bin 1 is provided with a visual window.

[0036] The working principle of a hollow constant pressure device of the utility model is:

[0037] 1. The device includes a drying bin 1, a clamping mechanism 2 and a sliding tensioning mechanism 3. The drying bin 1 has a hollow structure. The clamping mechanism 2 is arranged in the hollow structure of the drying bin 1. The clamping mechanism 2 includes a base 24, a first pressure plate 21, a second pressure plate 22 and a hydraulic cylinder 23. The piston of the hydraulic cylinder 23 is fixedly connected to the first pressure plate 21 by screws, and the cylinder body is fixedly connected to the second pressure plate 22 by screws. The base 24 is four support rods welded under the second pressure plate 22. The sliding tensioning mechanism 3 is detachably connected to the clamping mechanism 2; the drying bin 1 provides a drying environment for the transformer coil, and the coil is placed between the first pressure plate 21 and the second pressure plate 22. The hydraulic cylinder 23 realizes the clamping and fixing of the coil through the relative movement between the cylinder body and the piston part. The sliding tensioning mechanism 3 is installed on both sides of the clamping mechanism 2 to increase restrictions and promote the rapid dehydration and drying of the coil.

[0038] 2. The outer edge of the second pressure plate 22 is stepped, and the cylinder body of the hydraulic cylinder 23 is fixedly connected to the step of the second pressure plate 22 by screws; the step separates the hydraulic cylinder 23 from the coil, and the coil is on the upper step, which reduces the contamination of the coil by oil leakage, realizes protection of the coil, and improves the quality of the finished product.

[0039] 3. There are four groups of hydraulic cylinders 23, which are symmetrical about the center of the second pressure plate 22, and work together to apply a pressing force to the coil to achieve uniform force on the coil and ensure the finished product effect.

[0040] 4. The first pressure plate 21 and the second pressure plate 22 are both provided with through holes in their centers. The sliding tensioning mechanism 3 includes a cover plate 31, a vertical rod 32, a hinge rod 33, a screw rod 34, a movable seat 35 and a power source 36. The cover plate 31 is overlapped on the upper end surface of the first pressure plate 21. The vertical rod 32 is vertically arranged. The upper end passes through the through hole and is welded to the side of the cover plate 31 close to the first pressure plate 21. The other end is hinged to the hinge rod 33 through a pin shaft. The other end of the hinge rod 33 is hinged to the movable seat 35. One end of the screw rod 34 passes through the drying chamber 1 and is fixedly connected. The output shaft of the power source 36 and the movable seat 35 are threadedly connected with the screw rod 34; the output shaft of the power source 36 drives the screw rod 34 to rotate synchronously, and at the same time, the movable seat 35 is located on the screw rod 34 and performs linear motion, and the hinge rod 33 hinged to the movable seat 35 will drive the vertical rod 32 to move, and the vertical rod 32 slides and sinks due to the restriction of the through hole, and the cover plate 31 fixed on the other side moves downward synchronously and applies a clamping force to the first pressure plate 21 in the clamping mechanism 2, thereby realizing the restriction of the clamping mechanism 2, assisting in accelerating the drying and dehydration, and improving the processing efficiency of the device.

[0041] 5. The vertical rod 32 includes two sleeve rods threadedly connected to each other. The sleeve rod is rotated to change the length of the vertical rod 32. The vertical rod 32 is pre-adjusted according to the coil height to change the initial position and state of the sliding tensioning mechanism 3, thereby achieving targeted adjustment of the length of the vertical rod 32.

[0042] 6. The power source 36 is a motor, which drives the screw 34 to rotate, thereby realizing the mechanized drive of the sliding tensioning mechanism 3, saving manpower and time.

[0043] 7. The drying chamber 1 is provided with a visual window, through which the construction personnel can observe the compression state of the coil and the working condition of the sliding tensioning mechanism 3 in real time, so as to respond to emergencies in time, thereby achieving timely adjustment of the device and ensuring the normal compression operation of the device.

[0044] Embodiment 2

[0045] like Figure 4-Figure 5 As shown, the difference between this embodiment and the first embodiment is that the power source 36 is a turntable, and the turntable is manually rotated to drive the screw 34 to rotate synchronously, so as to realize the restriction of the sliding tensioning mechanism 3 on the clamping mechanism 2. Compared with the mechanized drive screw 34 to rotate, the turntable can more easily control the clamping force applied by the sliding tensioning mechanism 3 to the clamping mechanism 2; the other technical features are the same.

[0046] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A hollow constant pressure device, characterized in that: It includes a drying bin, a clamping mechanism and a sliding tensioning mechanism. The drying bin has a hollow structure. The clamping mechanism is arranged in the hollow structure of the drying bin. The clamping mechanism includes a base, a first pressure plate, a second pressure plate and a hydraulic cylinder. One end of the hydraulic cylinder is fixedly connected to the first pressure plate, and the other end is fixedly connected to the second pressure plate. The base is fixedly connected to the second pressure plate, and the sliding tensioning mechanism is detachably connected to the clamping mechanism.

2. A hollow constant pressure device according to claim 1, characterized in that: The outer edge of the second pressure-bearing plate is in a stepped shape, and the cylinder body of the hydraulic cylinder is fixedly connected to the step of the second pressure-bearing plate.

3. A hollow constant pressure device according to claim 2, characterized in that: A plurality of groups of hydraulic cylinders are symmetrically arranged at the center of the second pressure plate.

4. A hollow constant pressure device according to claim 3, characterized in that: The first pressure plate and the second pressure plate are both provided with through holes, and the sliding tensioning mechanism includes a cover plate, a vertical rod, a hinge rod, a screw rod, a movable seat and a power source. The cover plate is overlapped on the first pressure plate, one end of the vertical rod passes through the through hole and is fixedly connected to the cover plate, and the other end is hinged to the movable seat through the hinge rod, one end of the screw rod passes through the drying bin and is fixedly connected to the power source, and the movable seat is threadedly connected to the screw rod.

5. A hollow constant pressure device according to claim 4, characterized in that: The vertical rod comprises a plurality of sleeve rods connected by threads.

6. A hollow constant pressure device according to claim 5, characterized in that: The power source is a motor or a turntable.

7. A hollow constant pressure device according to claim 6, characterized in that: The drying bin is provided with a visual window.

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