A core clamping device

Abstract

The present invention is an iron core clamping device, the structure of which includes a rotating clamping beam mechanism whose two ends are lifted and connected to the lifting support mechanisms on both sides, the lifting support mechanism is slidably connected in the slide groove on the lamination table, and the rotating clamping beam mechanism includes one or more rotating compression beams that rotate at an angle of 0-90° on the horizontal plane. The lifting support mechanism slidably connected in the slide groove on the lamination table is movable as a whole, and each section of the rotatable rotating compression beam can not only compress the yoke column but also the core column. The height of the clamping beam can be quickly adjusted according to the thickness of the stacked iron core, and it can be flexibly moved while reducing costs, which solves the problem that there are no force points at both ends of the clamping beam when applying pressure, and realizes multiple uses of one beam.

Description

Technical Field

[0001] The invention relates to an iron core pressing device. Background Art

[0002] After the core is stacked and assembled, there will be more or less gaps between the sheets and between the core and the clamps. A clamping device is needed to clamp the core to eliminate the gaps. Generally, a clamping beam is used to clamp the core after the core clamps are assembled. It is a clamping tool to eliminate the gaps. The height of the clamping tool can be quickly adjusted and locked to complete the clamping of the core.

[0003] However, most of the clamping tools in the prior art are relatively large in size, and some are directly fixed in one position, and the core needs to be moved under it for clamping, and the operation steps are relatively cumbersome; when the core lamination table cannot be moved, the clamping tool cannot be used. Because the above steps are cumbersome, some operators directly use horn racks and iron chains to tie instead of the clamping device to perform its function. Although this process does not require the movement of large equipment, it requires the horn rack to continuously tie, which is time-consuming and labor-intensive, and may also cause damage to the corners of the core.

[0004] CN113539635A discloses a clamping device and a method for clamping a transformer core, which requires two sets of clamping mechanisms to respectively clamp the side columns, the middle column and the lower yoke, and the positions cannot be moved. Summary of the invention

[0005] The present invention provides a core pressing device, the purpose of which is to overcome the above-mentioned deficiencies in the prior art, achieve overall mobility, and be able to press both the yoke column and the core column.

[0006] The technical solution of the present invention is a core pressing device, the structure of which includes a rotating pressing beam mechanism with two ends lifting and connected to the lifting support mechanisms on both sides, the lifting support mechanism is slidably connected in the slide groove on the lamination table, and the rotating pressing beam mechanism includes one or more rotating pressing beams with a rotation angle of 0-90° on the horizontal plane. The lifting support mechanism slidably connected in the slide groove on the lamination table realizes overall mobility, and all rotatable rotating pressing beams can not only press the yoke column but also the core column.

[0007] Preferably, the lifting support mechanism comprises a platform connecting plate arranged in a T-shaped slide groove on the stacking table, the bottom of the platform connecting plate is interlocked with the T-shaped slide groove through a T-block to increase the reaction force of the rotating clamping beam mechanism, the platform connecting plate is connected to the connecting plate, the connecting plate is connected to the bottom end of a pair of lifting rods, a servo motor reducer is installed between the two lifting rods, the output end of the servo motor reducer is connected to a screw rod, the screw rod is connected to the sleeve on the slide rod on the upper part of the two lifting rods through a nut, the top end of the two lifting rod slide rods is connected to a limit top cover, and the two ends of the rotating clamping beam mechanism are connected to the sleeves on the slide rods of the lifting rods on both sides. The rotating clamping beam mechanism slides on the slide rod, and the screw rod is driven to rotate by the servo motor reducer to move the rotating clamping beam mechanism up and down.

[0008] Preferably, the rotary pressing beam mechanism comprises an upper beam whose two ends are connected to the sleeves on the lifting rod slide bars on both sides, a lifting ring is installed on the top of the upper beam for easy lifting, a plurality of hydraulic cylinders are evenly installed on the bottom of the upper beam along the length direction, the output ends of all hydraulic cylinders are downward and connected to the same top surface of the lower beam, one or more positioning plates are evenly arranged in the extension direction of the bottom surface of the lower beam, each positioning plate is connected to the center of the top surface of a rotary pressing beam, a pull ring type spring pin is installed on the rotary pressing beam corresponding to the positioning plate, which can be used for locking, a plurality of screw pressure heads are evenly arranged in the extension direction of the bottom surface of each rotary pressing beam, a connecting seat is installed between the rotary pressing beam and the screw pressure head, and the rotary pressing beam has a rotation range of 0-90°. The rotary pressing beam can press both the yoke column and the core column, and the pressure beam is divided into multiple rotary pressing beams, which can press multiple core columns at the same time.

[0009] Preferably, the two ends of the bottom of the upper beam are connected to the two ends of the lower beam through an elastic connection mechanism, the elastic connection mechanism includes a lower beam connection plate fixed to the two ends of the lower beam, and the two ends of the bottom of the upper beam are connected to the lower beam connection plate through a spring, and a spring pad is provided at the lower end of the spring to achieve a certain buffering effect.

[0010] Preferably, the platform connecting plate and the pair of connecting plates are provided with corresponding circular holes, and the platform connecting plate and the connecting plate are connected by means of pins passing through the corresponding circular holes, so as to drive the sliding of the rotating clamping beam mechanism, and the pin connection can transfer the applied force to the pin as shear force, so as to prevent the two ends of the rotating clamping beam mechanism from being broken under strong force.

[0011] Preferably, a remote control screw is provided in the lower beam, and the remote control screw is connected to the rotating pressure beam. The remote control screw can control the horizontal position of the rotating pressure beam, so that the rotating pressure beam can meet the compression of the cores of different window widths, and can move synchronously to both ends after rotating 90°.

[0012] Preferably, the remote control screw rod is a positive and negative wire structure, which can keep the screw rod rotating at a certain speed, and the two outer pressure beams can move to both sides at the same speed to prevent the M0 at both ends from being different.

[0013] Preferably, a thrust bearing is provided at the connection between the lower beam and the rotating pressure beam, and a reinforcing rib plate is provided in the rotating pressure beam corresponding to the thrust bearing, so that the rotating pressure beam can rotate easily and withstand the pressing force.

[0014] Preferably, it also includes a touch screen remote controller connected to the servo motor reducer, hydraulic cylinder and remote control screw rod signal, which can control the up and down movement of the pressing beam, input the hydraulic station parameters and core M0 parameters, etc., and reflect the pressure on the core during the pressure test experiment.

[0015] A method for using an iron core clamping device, comprising: after the iron core clamp is assembled, firstly sliding the platform connecting plate into the slide groove on the lamination table to a suitable position, then hoisting the rotating clamping beam mechanism and the connected lifting support mechanism without the platform connecting plate and the connecting plate to the position, and fixing the latch shaft;

[0016] Control the servo motor reducer to drive the screw to rotate, drive the upper beam down to contact the core, adjust the spiral pressure head under the rotating pressure beam to the appropriate position and height, input the parameters of the hydraulic cylinder, and press the lower yoke of the core;

[0017] After the clamping is completed, the upper beam is pulled back to a certain height, the rotating pressure beam at the bottom is rotated, and after rotating to 90°, it is locked by the pull-ring spring pin. The core clamping equipment is hoisted as a whole and slides along the slide groove to the appropriate position. The core M0 data, i.e. the core center distance, is input, and all the rotating pressure beams are adjusted to the appropriate position through the internal remote control screw rod. The upper beam is lowered to contact with the core column, the hydraulic cylinder parameters are set, and the core column is clamped. After the clamping is completed, the equipment is reset.

[0018] The advantages of the present invention are as follows: 1) The structural design is reasonable, and the height of the pressing beam can be quickly adjusted according to the thickness of the stacked core. The bottom of the connecting plate between the pressing beam and the stacking table can slide in the stacking table track by setting a T-shaped slider, which solves the problem that the pressing device cannot move when the position of the lower yoke of the core on the stacking table is different, and realizes the pressing of cores of different models and specifications;

[0019] 2) The mass does not exceed 10 tons, and it can be hoisted by a 10-ton crane, which reduces the cost and enables flexible movement, solving the problem that the existing clamping device is bulky and cumbersome and cannot be moved;

[0020] 3) Multiple hydraulic columns are set, and the pressure parameters can be set separately. The locking of the compression beam is guaranteed, which solves the problem that there are no force points at both ends of the compression beam when applying pressure; the compression beam is divided into multiple sections and can rotate around the central axis. After pressing the lower iron yoke, the compression beam can be rotated to 90° to compress the core column. When pressing the yoke column, the entire yoke column can be compressed at the same time. When pressing the core column, multiple core columns can be compressed at the same time, realizing multiple uses of one beam;

[0021] 4) The clamping beam can be set with a pressure digital display function, which can display the pressure of each hydraulic head. On the premise of realizing the function of clamping the iron core, it can also carry out pressure test experiments to test the clamping force of the iron core under different clamping conditions and realize the numerical control display of the clamping beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the core pressing device of the present invention.

[0023] Figure 2 It is a schematic structural diagram of the core pressing device of the present invention from another angle.

[0024] In the figure, 1 is the platform connecting plate, 2 is the connecting plate, 3 is the lifting rod, 4 is the screw rod, 5 is the upper beam, 6 is the lifting ring, 7 is the hydraulic cylinder, 8 is the lower beam, 9 is the rotating pressure beam, 10 is the positioning plate, 11 is the pull ring type spring pin, 12 is the connecting seat, 13 is the screw pressure head, 14 is the spring pad, 15 is the spring, 16 is the servo motor reducer, 17 is the limit top cover, 18 is the tank chain, 19 is the lower beam connecting plate, and A is the stacking table. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to examples and specific implementation modes. Example

[0026] like Figure 1 , 2 As shown, a core pressing device comprises a rotating pressing beam mechanism whose two ends are lifted and connected to lifting support mechanisms on both sides.

[0027] The lifting support mechanism includes a platform connecting plate 1 arranged in a T-shaped slide groove on the stacking table A. The bottom of the platform connecting plate 1 is interlocked with the T-shaped slide groove through a T-block to increase the reaction force of the rotating clamping beam mechanism. The platform connecting plate 1 is connected to the connecting plate 2, and the connecting plate 2 is connected to the bottom ends of a pair of lifting rods 3. A servo motor reducer 16 is installed between the two lifting rods 3. The output end of the servo motor reducer 16 is connected to the screw rod 4. The screw rod 4 is connected to the sleeves on the slide rods on the upper parts of the two lifting rods 3 through nuts. The top ends of the slide rods of the two lifting rods 3 are connected to the limit cover 17. The two ends of the rotating clamping beam mechanism are connected to the sleeves on the slide rods of the lifting rods 3 on both sides. The slide rod is for the rotating clamping beam mechanism to slide on it. The screw rod 4 is driven by the servo motor reducer 16 to drive the screw rod 4 to rotate and drive the rotating clamping beam mechanism to move up and down.

[0028] The rotary clamping beam mechanism includes an upper beam 5 whose two ends are connected to the sleeves on the sliding rods of the lifting rods 3 on both sides. A lifting ring 6 is installed on the top of the upper beam 5 for easy lifting. The two ends of the bottom of the upper beam 5 are respectively connected to the two ends of the lower beam 8 through an elastic connection mechanism. A number of (preferably 9) hydraulic cylinders 7 are evenly installed on the bottom of the upper beam 5 along the length direction. The output ends of all hydraulic cylinders 7 are downward and connected to the top surface of the same lower beam 8. A number of (preferably 3) positioning plates 10 are evenly arranged in the extension direction of the bottom surface of the lower beam 8. Each positioning plate 10 is connected to the center of the top surface of a rotary pressure beam 9. A pull-ring type spring pin 11 is installed on the rotary pressure beam 9 corresponding to the positioning plate 10. A number of (preferably 6) screw pressure heads 13 are evenly arranged in the extension direction of the bottom surface of each rotary pressure beam 9. A connecting seat 12 is installed between the rotary pressure beam 9 and the screw pressure head 13. The rotary pressure beam 9 can be rotated to 90°, and the pull-ring type spring pin 11 can be used for locking. The rotating pressure beam 9 can press both the yoke column and the core column. The pressure beam is divided into three rotating pressure beams 9, which can press three core columns at the same time.

[0029] The elastic connection mechanism includes a lower beam connection plate 19 fixed at both ends of the lower beam 8, and the two ends of the bottom of the upper beam 5 are connected to the lower beam connection plate 19 through a spring 15, and a spring pad 14 is arranged at the lower end of the spring 15 to achieve a certain buffering effect.

[0030] The bottom of the platform connecting plate 1 is equipped with a polytetrafluoroethylene strip, which can slide on the stacking table A. There are corresponding circular holes in the middle of the platform connecting plate 1 and a pair of connecting plates 2. The platform connecting plate 1 and the connecting plate 2 are connected by a pin passing through the corresponding circular holes. The sliding of the rotating clamping beam mechanism is driven. The use of a pin connection can transfer the applied force to the pin to become a shear force, preventing the two ends of the rotating clamping beam mechanism from being broken under a strong force.

[0031] A remote control screw is also provided in the lower beam 8, and the remote control screw is connected to the rotating pressure beam 9. The remote control screw can be controlled by a remote controller to control the horizontal position of the rotating pressure beam 9, so that the rotating pressure beam 9 can meet the requirements of pressing the iron cores of different window widths, and can be controlled to move synchronously to both ends after rotating 90°. The spacing of the rotating pressure beam 9 can be adjusted by the screw to meet the requirements of pressing the iron cores of different models. The screw for adjusting the spacing of the rotating pressure beam 9 is a positive and negative wire structure, which can keep the screw rotating at a certain speed, and the two outer pressure beams can move to both sides at the same speed to prevent the M0 (iron core center distance, in mm) at both ends from being different.

[0032] The diameter of the screw rod 4 should be larger and the thread of the thread should be deeper to improve the strength of the joint between the upper beam 5 and the screw rod 4 so as to withstand the reaction force of the rotating compression beam mechanism.

[0033] A thrust bearing is provided at the connection between the lower beam 8 and the rotating pressure beam 9, and a reinforcing rib plate is provided inside the rotating pressure beam 9 corresponding to the thrust bearing, so that the rotating pressure beam 9 can rotate easily and withstand the pressing force.

[0034] It can be equipped with a touch screen remote control, and the buttons and display screen can control the required functions, which is convenient for personnel to operate. Specifically, the up and down movement of the pressing beam can be controlled by buttons, and the liquid crystal display panel can input the hydraulic station parameters and the core M0 parameters, and reflect the pressure on the core during the pressure test experiment.

[0035] According to the above structure, when working, the clamping device is connected to the slide groove on the lamination table A through the platform connecting plate 1, and can be freely moved along the slide groove to a suitable position to meet the clamping of cores of different specifications and models.

[0036] After the core clamps are assembled, first slide the platform connecting plate 1 into the slide slot to a suitable position, then lift the rotating clamping beam mechanism and the connected lifting support mechanism without the platform connecting plate 1 and the connecting plate 2 to the position, and insert the pins to fix them.

[0037] The servo motor reducer 16 is controlled to drive the screw 4 to rotate, driving the upper beam 5 to descend to contact the core, adjusting the spiral pressure head 13 under the rotating pressure beam 9 to a suitable position and height, inputting the parameters of the hydraulic cylinder 7, and pressing the lower yoke of the core.

[0038] After the clamping is completed, the upper beam 5 is adjusted back to a certain height, and the rotating pressure beam 9 at the bottom is rotated. After rotating to 90°, it is locked by the pull-ring spring pin 11. The clamping equipment is lifted and slid along the slide groove to the appropriate position, and the core M0 data is input. The three rotating pressure beams 9 are adjusted to the appropriate position through the internal screw rod, and the upper beam 5 is lowered to contact with the core column. The parameters of the hydraulic cylinder 7 are set to clamp the core column. After the clamping is completed, the clamping equipment is reset.

[0039] The total weight of this core pressing equipment does not exceed ten tons, it can be moved at will, and the connection method with the stacking table is very strong, it can withstand a large pressing force, meet the core pressing needs, and occupies a small space, less than 10mm², and the cost is more than 200,000.

[0040]

[0041] The existing fixed clamping device has a total weight of more than 50 tons, is fixed in position and cannot be moved, occupies an area of ​​40mm², and costs more than 2 million.

[0042] As shown in the table below, by comparing the embodiment and the comparative example, the existing fixed clamping device of the comparative example requires the iron core to be moved under the clamping device, and this process takes 20 minutes; the clamping device of the embodiment is movable, and it takes 10 minutes to hoist it to the top of the iron core by a crane. The preparation time before clamping the iron core is shortened by half, and the efficiency is doubled.

[0043] The comparative example takes 30 minutes to compact one core column, and the normal three-column core requires 90 minutes to compact. The embodiment can compact three core columns at the same time, and the time required to compact the three-column core is 30 minutes, which is 2 / 3 shorter and twice as efficient.

[0044] When pressing the upper and lower yokes of the iron core, a total of six joints of the three-column iron core need to be pressed at the upper and lower yokes. The comparative pressing is a symmetrical pressing method of the upper and lower yokes, each pressing takes 30 minutes, and it needs to be pressed three times, which is 90 minutes. The embodiment is a whole yoke pressing method, each pressing takes 30 minutes, and it needs to be pressed twice, which is 60 minutes, and the time is shortened by 1 / 3; similarly, after the pressing is completed, the time required for resetting is the same as the preparation time before pressing.

[0045] Therefore, the total time required for the comparative example to complete the compaction of the three-column core is 220 minutes, and the time required for the embodiment to complete the compaction of the three-column core is 110 minutes. Compared with the comparative example, 110 minutes are saved in the core compaction process, and the efficiency is improved by 100%.

[0046] In summary, compared with the comparative clamping device, the clamping device of the embodiment can improve efficiency by 100% while reducing the construction cost and floor space.

[0047] All the components mentioned above are prior art, and those skilled in the art can use any model and existing design that can achieve their corresponding functions.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A core pressing device, characterized in that: The invention comprises a rotary pressing beam mechanism whose two ends are lifted and connected to lifting support mechanisms on both sides, the lifting support mechanism is slidably connected in a slide groove on a stacking table (A), and the rotary pressing beam mechanism comprises one or more rotary pressing beams (9) that rotate at an angle of 0-90° on a horizontal plane; the lifting support mechanism comprises a platform connecting plate (1) arranged in a T-shaped slide groove on the stacking table (A), the bottom of the platform connecting plate (1) is interlocked with the T-shaped slide groove through a T-shaped block, the platform connecting plate (1) is connected to a connecting plate (2), the connecting plate (2) is connected to the bottom ends of a pair of lifting rods (3), a servo motor reducer (16) is installed between the two lifting rods (3), the output end of the servo motor reducer (16) is connected to a screw rod (4), the screw rod (4) is connected to a sleeve on a slide rod at the top of the two lifting rods (3) through a nut, a limit cover (17) is connected between the top ends of the slide rods of the two lifting rods (3), and the rotary pressing beam mechanism comprises one or more rotary pressing beams (9) that rotate at an angle of 0-90° on a horizontal plane; the lifting support mechanism comprises a platform connecting plate (1) arranged in a T-shaped slide groove on the stacking table (A), the bottom of the platform connecting plate (1) is interlocked with the T-shaped slide groove through a T-shaped block, the platform connecting plate (1) is connected to a connecting plate (2), the connecting plate (2) is connected to the bottom ends of a pair of lifting rods (3), a servo motor reducer (16) is installed between the two lifting rods (3), the output end of the servo motor reducer (16) is connected to a screw rod (4), the screw rod (4) is connected to a sleeve on a slide rod at the top of the two lifting rods (3) through a nut, and the top ends of the slide rods of the two lifting rods (3) are connected to a limit cover (1 The two ends of the mechanism are connected to the sleeves on the sliding rods of the lifting rods (3) on both sides; the rotating pressing beam mechanism comprises an upper beam (5) whose two ends are connected to the sleeves on the sliding rods of the lifting rods (3) on both sides, a lifting ring (6) is installed on the top of the upper beam (5), and a plurality of hydraulic cylinders (7) are evenly installed on the bottom of the upper beam (5) along the length direction, the output ends of all the hydraulic cylinders (7) are downward and connected to the top surface of the same lower beam (8), one or more positioning plates (10) are evenly arranged in the extension direction of the bottom surface of the lower beam (8), each positioning plate (10) is connected to the center of the top surface of a rotating pressing beam (9), a pull ring type spring pin (11) is installed on the rotating pressing beam (9) corresponding to the positioning plate (10), and a plurality of screw pressure heads (13) are evenly arranged in the extension direction of the bottom surface of each rotating pressing beam (9), a connecting seat (12) is installed between the rotating pressing beam (9) and the screw pressure head (13), and the rotating range of the rotating pressing beam (9) is 0-90°.

2. The core pressing device according to claim 1, characterized in that: The two ends of the bottom of the upper beam (5) are connected to the two ends of the lower beam (8) via an elastic connection mechanism, respectively. The elastic connection mechanism comprises a lower beam connection plate (19) fixed to the two ends of the lower beam (8). The two ends of the bottom of the upper beam (5) are connected to the lower beam connection plate (19) via a spring (15). A spring pad (14) is provided at the lower end of the spring (15).

3. The core pressing device according to claim 2, characterized in that: Circular holes are correspondingly opened in the middle of the platform connecting plate (1) and on the pair of connecting plates (2), and the platform connecting plate (1) and the connecting plates (2) are connected by means of pins passing through the corresponding circular holes.

4. The core pressing device according to claim 3, characterized in that: A remote control screw rod is provided in the lower beam (8), and the remote control screw rod is connected to the rotating pressure beam (9).

5. The core pressing device according to claim 4, characterized in that: The remote control screw rod is a positive and negative wire structure.

6. The core pressing device according to claim 5, characterized in that: A thrust bearing is provided at the connection between the lower beam (8) and the rotating pressure beam (9), and a reinforcing rib plate is provided in the rotating pressure beam (9) corresponding to the thrust bearing.

7. The core pressing device according to claim 6, characterized in that: It also includes a touch screen remote controller connected to the servo motor reducer (16), the hydraulic cylinder (7) and the remote control screw rod signal.

8. The method for using the core pressing device according to claim 7, characterized in that: include: After the core clamp is assembled, first slide the platform connecting plate (1) into the slide groove on the lamination table (A) to a suitable position, then lift the rotary clamping beam mechanism and the connected lifting support mechanism without the platform connecting plate (1) and the connecting plate (2) to the position, and fix the latch shaft; Control the servo motor reducer (16) to drive the screw (4) to rotate, drive the upper beam (5) to descend until it contacts the iron core, adjust the spiral pressure head (13) below the rotating pressure beam (9) to a suitable position and height, input the parameters of the hydraulic cylinder (7), and press the lower yoke of the iron core; After the clamping is completed, the upper beam (5) is adjusted back to a certain height, and the rotating pressure beam (9) at the bottom is rotated. After rotating to 90 degrees, it is locked by the pull ring type spring pin (11). The core clamping equipment is hoisted as a whole and slid along the slide groove to a suitable position. The core M0 data, i.e., the core center distance, is input. All the rotating pressure beams (9) are adjusted to a suitable position by the internal remote control screw rod. The upper beam (5) is lowered to contact with the core column, and the parameters of the hydraulic cylinder (7) are set to clamp the core column. After the clamping is completed, the equipment is reset.

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