CN109243807B

CN109243807B - Coil pressing device

Info

Publication number: CN109243807B
Application number: CN201811415743.XA
Authority: CN
Inventors: 王志坤; 洪伟; 洪婧; 王佳豪
Original assignee: Jiangxi Yawei Electric Co ltd
Current assignee: Jiangxi Yawei Electric Co ltd
Priority date: 2018-11-26
Filing date: 2018-11-26
Publication date: 2020-06-16
Anticipated expiration: 2038-11-26
Also published as: CN109243807A

Abstract

The utility model provides a coil closing device, belong to transformer production technical field, including the supporting part, transmission portion and clamping part, a serial communication port, the supporting part includes the base, the crossbeam, spout and auricle, the outside crossbeam that extends of base circumference, the spout that runs through the crossbeam has on the crossbeam, a pair of auricle of crossbeam below design, transmission portion includes the screw rod, the slider, lower couple, the cable wire, bevel gear and band pulley, the screw rod is installed on the auricle of supporting part, install the slider on the screw rod, the slider passes through screw-thread fit with the screw rod, couple under the connection on the slider, the spout that the lower couple passed the supporting part exposes the top of crossbeam. The steel cable is connected to the lower hook and the upper hook of the pressing portion, the screw rod extends towards the center of the lower portion of the base, the end of the inner side of the screw rod is provided with a bevel gear, the pressing portion comprises a top cover and the upper hook, the top cover is installed above the coil, and the periphery of the top cover is provided with the upper hook.

Description

Coil pressing device

Technical Field

The invention relates to the technical field of transformer production, in particular to a coil pressing device.

Background

In order to ensure that a transformer coil can bear axial force during short circuit and meet the requirement of axial dimension, the coil must be compressed, various coil compression methods are commonly used at present, a screw is generally adopted for small and medium coils and is compressed by manually screwing a nut, and for large transformer coils, the dried coil is generally compressed by a hydraulic machine for a short time, is compressed by constant-pressure equipment while being dried, and is compressed by a spring pressing nail while being dried.

For hydraulic pressing equipment, a plurality of screws are mostly arranged on the periphery of a hydraulic cylinder, and a pressing platform is arranged on the top of each screw. The presence of the screw in this form undoubtedly brings inconvenience to the placement of the coil on the hydraulic press, and of course, the installation of the screw after the coil is placed in some devices is also time-consuming and laborious in general.

Disclosure of Invention

The present invention is directed to a coil pressing device, which solves the above-mentioned drawbacks of the prior art.

The technical problem solved by the invention is realized by adopting the following technical scheme:

the utility model provides a coil closing device, including the supporting part, transmission portion and clamping part, a serial communication port, the supporting part includes the base, the crossbeam, spout and auricle, the outside crossbeam that extends of base circumference, the spout that runs through the crossbeam has on the crossbeam, a pair of auricle of crossbeam below design, transmission portion includes the screw rod, the slider, lower couple, the cable wire, bevel gear and band pulley, the screw rod is installed on the auricle of supporting part, install the slider on the screw rod, the slider passes through screw-thread fit with the screw rod, couple under connecting on the slider, lower couple passes the spout of supporting part and exposes the top of crossbeam. The steel cable is connected to the lower hook and the upper hook of the pressing portion, the screw rod extends towards the center of the lower portion of the base, the end of the inner side of the screw rod is provided with a bevel gear, the pressing portion comprises a top cover and the upper hook, the top cover is installed above the coil, and the periphery of the top cover is provided with the upper hook.

Furthermore, the number of the cross beams is 3-4, the arrangement form is a circumferential uniform distribution array, correspondingly, the number of pairs of the lug pieces is the same as that of the cross beams, and the number of the screw rods, the lower hooks of the sliding blocks, the steel cables and the upper hooks is equal to that of the cross beams, so that a structural corresponding relation is formed.

Furthermore, the center of the base is provided with a lower boss, the diameter of the lower boss is consistent with the aperture of the central hole of the coil, the bottom of the top cover is provided with an upper boss, and the diameter of the upper boss is consistent with the inner diameter of the coil.

Furthermore, a through hole is formed in the center of the lower boss, a guide rod is arranged at the bottom of the top cover, and the guide rod is downwards inserted into the through hole.

Furthermore, the screw thread of the screw rod is a self-locking screw thread, and the application of the self-locking screw thread on the screw rod is convenient for realizing the pressure maintaining function of the pressing device.

Furthermore, a belt wheel is installed below the bevel gear and connected to a power source, such as a motor, a gasoline engine, a diesel engine and other rotary power sources, so as to provide power for the compression operation of the coil.

The invention has the beneficial effects that:

the invention is used for the pressing process of the transformer coil, has simple and reliable structure, has no redundant structural parts on the base when the coil is installed, is convenient for the installation of the coil on the base, has more balanced load when the steel cables arranged in the circumferential array draw the top cover, ensures that the downward pressure born by the coil is also more balanced, and in addition, the design of the guide rod can ensure that the coil has no additional lateral stress when being pressed downward.

Drawings

FIG. 1 is a schematic of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a front view of the present invention.

Fig. 4 is a partially enlarged view of the present invention.

In the figure: 10. the supporting part 11, the base 12, the beam 13, the sliding groove 14, the lower boss 15, the through hole 16, the lug 20, the transmission part 21, the screw rod 22, the sliding block 23, the lower hook 24, the steel cable 25, the bevel gear 26, the belt wheel 30, the coil 40, the pressing part 41, the top cover 42, the upper hook 43, the upper boss 44 and the guide rod 44.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1-4, the coil pressing device includes a supporting portion 10, a transmission portion 20 and a pressing portion 40, the pressing portion 40 is installed above the supporting portion 10, a coil 30 is placed between the pressing portion 40 and the supporting portion 10, and the transmission portion 20 pulls the pressing portion 40 downward to press the coil 30.

The support portion 10 includes a base 11, a beam 12, a sliding groove 13, a lower boss 14, a through hole 15, and a tab 16. The base 11 is the basis of supporting part 10 and even whole closing device, and base 11 circumference outwards extends crossbeam 12, and the preferred 3~4 of crossbeam 12 quantity is arranged the form and is the circumference equipartition array, has the spout 13 that runs through crossbeam 12 on the crossbeam 12, and a pair of auricle 16 of crossbeam 12 below design, auricle 16 are used for installing the screw rod 21 of transmission portion 20.

The center of the base 11 has a lower boss 14, and the diameter of the lower boss 14 is consistent with the aperture of the central hole of the coil, so as to be used for positioning the coil 30 on the base 11. The lower boss 14 has a through hole 15 at the center, and the through hole 15 provides a guide function for the downward movement of the pressing part 40 in cooperation with the guide bar 44 of the pressing part 40.

The transmission part 20 comprises a screw 21, a slider 22, a lower hook 23, a steel cable 24, a bevel gear 25 and a belt wheel 26, the screw 21 is mounted on the lug 16 of the support part 10, the slider 22 is mounted on the screw 21, the slider 22 and the screw 21 are in threaded fit (not shown), the thread of the screw 21 is preferably a self-locking thread, and the application of the self-locking thread on the screw 21 is convenient for realizing the pressure maintaining function of the pressing device. The slider 22 is connected with a lower hook 23, and the lower hook 23 passes through the sliding groove 13 of the supporting part 10 and is exposed above the cross beam 12. The cable 24 is connected to the lower hook 23 and the upper hook 42 of the pressing portion 40, and plays a role of pulling the pressing portion 40.

As mentioned above, the number of the beams 12 is 3 to 4, obviously, the corresponding number of the screws 21 is the same as that of the beams 12, each screw 21 extends towards the center below the base, the inner ends of the screws 21 are provided with bevel gears 25, for convenience of description, the bevel gear assemblies installed in pairs are collectively referred to as the bevel gears 25, obviously, the bevel gears 25 in the present application refer to a group of bevel gear transmission assemblies which comprise a driving wheel and 3 to 4 driven wheels, and the driven wheels are gears connected to the ends of the screws 21. A belt wheel 26 is arranged below the bevel gear 25, and the belt wheel 26 is connected to a power source, such as a motor, a gasoline engine, a diesel engine and other rotary power sources, and provides power for the compression operation of the coil.

The pressing part 40 includes a top cover 41, an upper hook 42, an upper boss 43, and a guide bar 44, and the top cover 41 is installed above the coil 30 for transmitting a downward pressure to the coil 30. The top cover 41 is provided with upper hooks 42 around, obviously, the number of the upper hooks 42 is equal to that of the lower hooks 23, the arrangement mode is also a circumferential uniform array, and the upper hooks 42 and the lower hooks 23 form force transmission points for pressing operation and are connected through the steel cable 24. The top cover 41 has an upper boss 43 at the bottom, and the diameter of the upper boss 43 is consistent with the inner diameter of the coil 30 for relative positioning of the coil 30 and the pressing portion 40.

In order to prevent the pressing portion 40 from being displaced when moving downwards by the pulling force of the cable 24 or laterally pressing the coil 30, a guide rod 44 is provided at the bottom of the top cover 41, and the guide rod 44 is inserted downwards into the through hole 15 of the supporting portion 10 to guide the downward movement of the pressing portion 40.

The coil pressing device is simple to operate when used for pressing the coil, the coil 30 is placed on the base 11, the lower boss 14 is used for limiting, the pressing part 40 is installed on the coil 30, and the guide rod 44 and the through hole 15 are used for guiding installation. The slide 22 is moved to the inside position and the cable 24 is installed between the upper hook 42 and the lower hook 23. The power source is started to move the sliding blocks 22 outwards, the sliding blocks 22 move outwards synchronously, and the pressing part 40 moves downwards steadily and gradually, so that the coil 30 is pressed. Because the screw rod 21 is provided with the self-locking thread, when the compression amount meets the requirement, the power source stops working, and the screw rod 21 automatically keeps the slide block 22 at the position to realize pressure maintaining. After the operation is finished, the screw 21 is driven reversely to move the inner side of the slide block 22, the steel cable 24 is removed, and the pressing part 40 is removed to finish the whole coil pressing operation.

The above embodiments mainly describe the coil pressing device of the present invention. While only a limited number of embodiments and features have been described, those skilled in the art will recognize that the invention can be embodied in many other forms without departing from the spirit or scope thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, and various modifications and alternative arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. The coil pressing device comprises a supporting portion (10), a transmission portion (20) and a pressing portion (40), and is characterized in that the supporting portion (10) comprises a base (11), a cross beam (12), sliding grooves (13) and lug plates (16), the base (11) circumferentially and outwardly extends the cross beam (12), the sliding grooves (13) penetrating through the cross beam (12) are formed in the cross beam (12), a pair of lug plates (16) are designed below the cross beam (12), the number of the cross beam (12) is 3-4, the arrangement form is a circumferentially uniform distribution array and is corresponding, the number of the lug plates (16) is the same as that of the cross beam (12), the number of lower hooks (23), steel cables (24) and upper hooks (42) of a screw rod (21) and a sliding block (22) is equal to that of the cross beam (12), a structural corresponding relation is formed, and the transmission portion (20) comprises a screw rod (21), A slide block (22), a lower hook (23), a steel cable (24), a bevel gear (25) and a belt wheel (26), the screw rod (21) is arranged on a lug plate (16) of the support part (10), a slide block (22) is arranged on the screw rod (21), the sliding block (22) is matched with the screw rod (21) through threads, the sliding block (22) is connected with a lower hook (23), the lower hook (23) passes through the sliding groove (13) of the support part (10) and is exposed out of the upper part of the cross beam (12), the screw rod (21) extends towards the center below the base, the end head of the inner side of the screw rod (21) is provided with a bevel gear (25), the pressing part (40) comprises a top cover (41) and an upper hook (42), the top cover (41) is arranged above the coil (30), the periphery of the top cover (41) is provided with an upper hook (42), the steel cable (24) is connected to the lower hook (23) and the upper hook (42) of the pressing part (40).

2. The coil pressing device according to claim 1, wherein the base (11) has a lower boss (14) at the center, the diameter of the lower boss (14) is in conformity with the diameter of the central hole of the coil, and the top cover (41) has an upper boss (43) at the bottom, the diameter of the upper boss (43) is in conformity with the inner diameter of the coil (30).

3. The coil pressing device according to claim 2, wherein the lower boss (14) has a through hole (15) at the center, and a guide rod (44) is provided at the bottom of the top cover (41), the guide rod (44) being inserted downward into the through hole (15).

4. Coil compression device according to claim 1, in which the thread of the screw (21) is a self-locking thread.

5. The coil compacting apparatus according to claim 1, wherein a pulley (26) is installed below the bevel gear (25), and the pulley (26) is connected to a power source.