U-shaped hanging ring opening device for power fittings

Abstract

The present invention relates to a U-shaped hanging ring hole punching device for electric hardware, a transmission box is installed in the middle of a working bracket, loading cross plates are arranged on both sides of the working bracket, a plurality of first clamping blocks for fixing the U-shaped hanging ring are installed on the loading cross plates, a supporting cross plate is installed in the middle of the transmission box, a plurality of mounting plates which are equidistantly and evenly distributed are installed on both sides of the supporting cross plate, a pushing cross plate is movably installed on the mounting plate, two lifting cross plates which are symmetrically arranged up and down are arranged in the middle of the transmission box and on both sides of the supporting cross plate, a transmission sliding block is fixedly connected at both ends of each lifting cross plate, a plurality of hole punching rigs which are equidistantly and evenly distributed are installed on the opposite sides of the two lifting cross plates, and an electric slide table is installed at both ends of each loading cross plate to adapt to U-shaped hanging rings of different sizes, ensure that the two hole punching ends of the U-shaped hanging ring are symmetrical about the supporting cross plate, thereby ensuring the accurate hole punching of the hole punching end of the U-shaped hanging ring.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing equipment, and in particular to a U-shaped hanging ring hole opening device for an electric power hardware. Background Art

[0002] Power fittings are metal accessories that connect and combine various devices in the power system and play a role in transmitting mechanical loads, electrical loads and providing some protection. Among them, the U-shaped hanging ring is the most common type of power fittings. It is forged from round steel into a U-shaped billet with holes opened on both sides of the open end.

[0003] The patent document with publication number CN114012136B discloses a U-shaped hanging ring hole-opening device for electric hardware; it includes a rotating feeding mechanism, a hole-opening mechanism and a clamping and positioning mechanism, the rotating feeding mechanism includes two vertical plates, two rotating plates are arranged between the two vertical plates, a number of cross bars are arranged in a ring array between the two rotating plates, and a plurality of hanging wheels are arranged at intervals on the cross bars, and a driving device for driving the rotating plate to rotate at a fixed angle is arranged on the vertical plate; the hole-opening mechanism includes a frame and a strip-shaped movable seat that moves along the frame toward the rotating feeding mechanism, and a hole-opening motor corresponding to each hanging wheel is arranged at intervals on the strip-shaped movable seat, and a drill bit is connected to the output shaft of the hole-opening motor, and the clamping and positioning mechanism includes an upper clamping device and a lower opening positioning device arranged on the upper and lower ends of the rotating feeding mechanism. The beneficial effects of the above patent are high processing efficiency and precision, simple loading and unloading processes, and excellent actual use effects.

[0004] The above device has the following shortcomings: when in use, the lifting and positioning bar may not be smoothly inserted into the inner side of the opening at the lower end of the U-shaped hanging ring, and part of the U-shaped hanging ring may be easily pushed out, resulting in poor drilling effect, low drilling efficiency and yield rate, and the above device can only drill holes in U-shaped hanging rings of specific sizes and cross-sectional diameters when in use, and the drill bit length needs to pass through the entire U-shaped hanging ring, which is prone to deflection, resulting in low drilling accuracy. Summary of the invention

[0005] The purpose of the present invention is to provide a U-shaped hanging ring hole opening device for electric hardware to improve the overall work efficiency in view of the above-mentioned problems and shortcomings.

[0006] The technical problems solved by the present invention are:

[0007] (1) When the above device is used, it is easy for the lifting and positioning bar to fail to be smoothly inserted into the inner side of the opening at the lower end of the U-shaped hanging ring, and it is easy for part of the U-shaped hanging ring to be pushed out, resulting in poor punching effect, low punching efficiency and low yield rate;

[0008] (2) When in use, the above device can only be used to drill holes in U-shaped hanging rings of specific sizes and cross-sectional diameters, and the drill bit needs to be long enough to penetrate the entire U-shaped hanging ring, which is prone to deflection, resulting in low drilling accuracy.

[0009] The objectives of the present invention can be achieved through the following technical solutions: an electric power fitting U-shaped hanging ring hole opening device, comprising a working bracket, a transmission box is installed in the middle of the working bracket, loading cross plates are provided on both sides of the working bracket, a plurality of first clamping blocks for fixing the U-shaped hanging ring are installed on the loading cross plates, a supporting cross plate is installed in the middle of the transmission box, a plurality of equidistant and evenly distributed mounting plates are installed on both sides of the supporting cross plate, a pushing cross plate is movably installed on the mounting plate, two lifting cross plates symmetrically arranged in the middle of the transmission box and on both sides of the supporting cross plate are provided, each lifting cross plate is fixedly connected with a transmission slider at both ends, a plurality of equidistant and evenly distributed hole opening drills are installed on the opposite sides of the two lifting cross plates, and an electric slide is installed at both ends of each loading cross plate.

[0010] As a further solution of the invention, the upper and lower rows of hole drilling rigs are in one-to-one correspondence, each pair of hole drilling rigs, each pair of top pushing cross plates and the first clamping block are in one-to-one correspondence, and the loading cross plate is reciprocated left and right on the working bracket through an electric slide to move the hole opening end of the U-shaped hanging ring to the top pushing cross plate.

[0011] As a further solution of the invention, a lifting motor is installed in the middle of the lower side of the transmission box, both ends of the driving shaft of the lifting motor are fixedly connected with transmission rotating rods, and both sides of the transmission box are rotatably connected with bidirectional screws.

[0012] As a further solution of the invention, the transmission rotating rod and the bidirectional screw correspond one to one, each transmission rotating rod and the corresponding bidirectional screw are transmitted through two meshing transmission gear plates, the bidirectional screw is provided with two symmetrically arranged thread sections, and each thread section on the bidirectional screw is respectively connected with the corresponding thread of the transmission slider.

[0013] As a further solution of the invention, a through slide groove for the transmission slider to pass through and slide in connection is provided on the side wall of the transmission box near the end of the lifting horizontal plate, and limiting slide grooves are provided on the inner side wall of the transmission box and on both sides of the through slide groove, and a sliding block is fixedly connected to the end of the lifting horizontal plate and is slidably connected to the limiting slide groove.

[0014] As a further solution of the invention, both ends of the pushing horizontal plate are rotatably connected to one side of the mounting plate, and the two telescopic support rods are in an inclined symmetrical structure. The lower end of the telescopic support rod is rotatably connected to a transmission seat, and the transmission seat is slidably connected to the mounting plate. A second spring is installed between the two transmission seats, and a first spring is installed on the other side of the two transmission seats, and one end of the first spring is fixedly connected to the side of the mounting plate.

[0015] As a further solution of the invention, the first clamping block is installed on the loading horizontal plate through an installation bracket, and L-shaped support frames are fixedly connected to both sides of one side of the first clamping block. Two symmetrically arranged limit clamping rods are provided between the two L-shaped support frames, and a number of limit spring rods are rotatably connected to both sides of each limit clamping rod, and the ends of the limit spring rods are respectively hinged to the first clamping block and the L-shaped support frame.

[0016] As a further solution of the invention, a first bolt is threaded through the middle of the mounting bracket, a second bolt is threaded through the mounting bracket and located on one side of the first bolt, a second clamping block is installed on the second bolt, and the upper end of the first bolt abuts against the lower side of the U-shaped hanging ring.

[0017] As a further solution of the invention, the side wall of the first clamping block and the upper side of the second clamping block are both provided with clamping limit grooves.

[0018] Beneficial effects of the present invention:

[0019] (1) When the U-shaped hanging ring is moved to the top push horizontal plate under the push of the first clamping block and is fixed by the top push clamping on the inner side of the top push horizontal plate, the lifting motor rotates the transmission rotating rod, drives the bidirectional screw through the meshing transmission gear plate, and brings together the two transmission sliders on each bidirectional screw, thereby bringing together the lifting horizontal plates on the upper and lower sides, thereby pushing the drilling rig to drill holes on the two side opening ends of the U-shaped hanging ring at the same time. A through waist-shaped groove is provided in the middle of the top push horizontal plate for the drilling rig to penetrate. After the drilling is completed, the lifting motor rotates in the reverse direction. The two rows of drilling rigs are separated, and then the loading cross plate containing the U-shaped hanging rings with holes drilled is moved out through the electric slide table, so that the staff can take out the U-shaped hanging rings with holes drilled and place the U-shaped hanging rings without holes drilled. At the same time, the loading cross plate containing the U-shaped hanging rings without holes drilled is moved in through the electric slide table on the other side, and the drilling rigs are used to drill holes again, thereby drilling holes in a row. At the same time, the symmetrical drilling of the two rows of drilling rigs shortens the drill bit length of the drilling rig, reduces the deflection torque of the drill bit during rotation, improves the drilling accuracy, shortens the drilling time, and improves the work efficiency.

[0020] When the U-shaped hanging ring is in a state of being pressed and stretched, the tension spring of the first spring and the tension spring of the second spring are used to push the pushing plate backwards, thereby clamping and fixing the opening end of the U-shaped hanging ring from the inside. A limiting groove is provided on the upper surface of the pushing plate for engaging and limiting the opening end of the U-shaped hanging ring, thereby further fixing the opening end of the U-shaped hanging ring, thereby avoiding shaking and other deviations during drilling and improving the drilling accuracy. When the U-shaped hanging ring is installed on one side of the first clamping block, the limiting spring rod is used to The limit clamp rod is pushed back by elastic force, so that the U-shaped hanging ring is clamped and fixed by the limit clamp rod, the bent section of the U-shaped hanging ring is limited and fixed by the clamping limit groove on the first clamping block, and the middle lower side of the U-shaped hanging ring is mechanically limited and fixed by the clamping limit groove on the second clamping block, so as to further limit and fix the U-shaped hanging ring. At the same time, when the U-shaped hanging rings of different sizes and cross-sectional diameters are opened, the elastic force of the limit spring rod is used for adaptation, and the first bolt and the second bolt are lifted and lowered to adapt to the U-shaped hanging rings of different sizes, ensuring that the two opening ends of the U-shaped hanging ring are symmetrical about the supporting cross plate, thereby ensuring the precise opening of the opening ends of the U-shaped hanging ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0022] Figure 1 It is the front view of the overall structure of the present invention;

[0023] Figure 2 It is a side view of the internal structure of the transmission box of the present invention;

[0024] Figure 3 It is a side view of the overall structure of the transmission box of the present invention;

[0025] Figure 4 for Figure 3 A magnified schematic diagram of the middle A area;

[0026] Figure 5 It is a side view of the overall structure of the first clamping block of the present invention;

[0027] Figure 6 It is a top view of the overall structure of the first clamping block of the present invention;

[0028] In the figure: 1. working bracket; 2. electric slide; 3. first clamping block; 4. transmission box; 5. lifting motor; 6. supporting horizontal plate; 7. pushing horizontal plate; 8. bidirectional screw; 9. transmission rotating rod; 10. transmission gear plate; 11. lifting horizontal plate; 12. hole drilling machine; 13. transmission slider; 14. limiting slide groove; 15. telescopic support rod; 16. mounting plate; 17. fixing bolt; 18. first spring; 19. transmission seat; 20. second spring; 21. mounting bracket; 22. loading horizontal plate; 23. limiting clamping rod; 24. L-shaped support frame; 25. limiting spring rod; 26. first bolt; 27. second bolt; 28. second clamping block; 29. ​​clamping limiting groove. DETAILED DESCRIPTION

[0029] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0030] See also Figure 1-6 As shown: an electric power fitting U-shaped hanging ring opening device, comprising a working support 1, a transmission box 4 is installed in the middle of the working support 1, a loading cross plate 22 is provided on both sides of the working support 1, a plurality of first clamping blocks 3 for fixing the U-shaped hanging ring are installed on the loading cross plate 22, a supporting cross plate 6 is installed in the middle of the transmission box 4, a plurality of mounting plates 16 evenly distributed at equal distances are installed on both sides of the supporting cross plate 6, a pushing cross plate 7 is movably installed on the mounting plate 16, two lifting cross plates 11 symmetrically arranged in the middle of the transmission box 4 and on both sides of the supporting cross plate 6 are provided, and a transmission slider 1 is fixedly connected to each lifting cross plate 11 at both ends 3. Several hole drills 12 are installed on the opposite sides of the two lifting horizontal plates 11, which are evenly distributed at equal distances, and the upper and lower rows of hole drills 12 are in one-to-one correspondence. Each pair of hole drills 12, each pair of top-pushing horizontal plates 7 and the first clamping block 3 are in one-to-one correspondence. An electric slide 2 is installed at both ends of each loading horizontal plate 22. The loading horizontal plate 22 is moved back and forth left and right on the working bracket 1 through the electric slide 2, and the hole end of the U-shaped hanging ring is moved to the top-pushing horizontal plate 7. The hole end of the U-shaped hanging ring is clamped and fixed by the top-pushing horizontal plate 7, so that the hole drills 12 on both sides can drill holes on the hole ends on both sides of the U-shaped hanging ring respectively.

[0031] A lifting motor 5 is installed in the middle of the lower side of the transmission box 4. Both ends of the driving shaft of the lifting motor 5 are fixedly connected with a transmission rotating rod 9. Both sides of the transmission box 4 are rotatably connected with a bidirectional screw 8. The transmission rotating rod 9 and the bidirectional screw 8 correspond to each other one by one. Each transmission rotating rod 9 and the corresponding bidirectional screw 8 are driven by two meshing transmission toothed disks 10. The bidirectional screw 8 is provided with two symmetrically arranged threads, and each thread section on the bidirectional screw 8 is respectively threadedly sleeved with the transmission slider 13;

[0032] When the U-shaped hanging ring is moved to the top pushing horizontal plate 7 under the push of the first clamping block 3 and is fixed by the top pushing clamping of the top pushing horizontal plate 7, the lifting motor 5 rotates the transmission rotating rod 9, and drives the two-way screw 8 through the meshing transmission gear plate 10 to gather the two transmission slide blocks 13 on each two-way screw 8, thereby gathering the lifting horizontal plates 11 on the upper and lower sides, thereby pushing the hole drilling machine 12 to drill holes on the two side opening ends of the U-shaped hanging ring at the same time. A through waist-shaped groove is provided in the middle of the top pushing horizontal plate 7 for the drill bit of the hole drilling machine 12 to penetrate. After the drilling is completed, the lifting motor 5 runs in the reverse direction. The two rows of drilling drills 12 are separated, and then the loading cross plate 22 containing the U-shaped hanging rings with holes drilled is moved out through the electric slide 2, so that the staff can remove the U-shaped hanging rings with holes drilled and place the U-shaped hanging rings without holes drilled. At the same time, the loading cross plate 22 containing the U-shaped hanging rings without holes drilled is moved in through the electric slide 2 on the other side, and holes are drilled again by the drilling drills 12, so as to drill holes in a row. At the same time, the symmetrical drilling of the two rows of drilling drills 12 can shorten the drill bit length of the drilling drill 12, reduce the deflection torque of the drill bit during rotation, improve the drilling accuracy, shorten the drilling time, and improve work efficiency.

[0033] A through slide groove for the transmission slider 13 to slide through and connect is provided on the side wall of the transmission box 4 near the end of the lifting horizontal plate 11. Limiting slide grooves 14 are provided on the inner wall of the transmission box 4 and on both sides of the through slide groove. A sliding block that is slidably engaged with the limiting slide groove 14 is fixedly connected to the end of the lifting horizontal plate 11. The limiting slide groove 14 is used to assist in limiting the lifting horizontal plate 11 to maintain the accuracy of the drilling rig 12 when moving and avoid deviation.

[0034] Both ends of the push horizontal plate 7 are rotatably connected to one side of the mounting plate 16 with telescopic support rods 15, and the two telescopic support rods 15 are in an oblique symmetrical structure. The lower end of the telescopic support rod 15 is rotatably connected to a transmission seat 19, and the transmission seat 19 is slidably connected to the mounting plate 16. A second spring 20 is installed between the two transmission seats 19, and the other side of the two transmission seats 19 is installed with a first spring 18, and one end of the first spring 18 is fixedly connected to the side of the mounting plate 16;

[0035] When the opening end of the U-shaped hanging ring moves onto the pushing horizontal plate 7, the pushing horizontal plate 7 is squeezed by the opening end of the U-shaped hanging ring and gathered toward the supporting horizontal plate 6, so that the telescopic support rod 15 is compressed and deflected, compressing the second spring 20 and stretching the first spring 18 at the same time, so that the elastic force of the first spring 18 and the second spring 20 is used to push the pushing horizontal plate 7 back, and the opening end of the U-shaped hanging ring is pushed and clamped inwardly, and a limiting groove is provided on the upper surface of the pushing horizontal plate 7 for engaging and limiting the opening end of the U-shaped hanging ring, so as to further fix the opening end of the U-shaped hanging ring, thereby avoiding shaking and other deviations during drilling, and improving the punching accuracy.

[0036] The first clamping block 3 is installed on the loading horizontal plate 22 through the mounting bracket 21. L-shaped support frames 24 are fixedly connected to both sides of one side of the first clamping block 3. Two symmetrically arranged limit clamping rods 23 are provided between the two L-shaped support frames 24. A plurality of limit spring rods 25 are rotatably connected to the two sides of each limit clamping rod 23, and the ends of the limit spring rods 25 are respectively hinged to the first clamping block 3 and the L-shaped support frame 24;

[0037] A first bolt 26 is threadedly penetrated in the middle of the mounting bracket 21, a second bolt 27 is threadedly penetrated on one side of the mounting bracket 21 and located at the first bolt 26, a second clamping block 28 is mounted on the second bolt 27, and the upper end of the first bolt 26 abuts against the lower side of the U-shaped hanging ring;

[0038] The side wall of the first clamping block 3 and the upper side of the second clamping block 28 are both provided with clamping limit grooves 29, and the mounting plate 16 is fixedly mounted on the supporting horizontal plate 6 by means of fixing bolts 17;

[0039] When the U-shaped hanging ring is installed to one side of the first clamping block 3, the limiting clamp rod 23 is elastically pushed back by the limiting spring rod 25, so that the U-shaped hanging ring is clamped and fixed by the limiting clamp rod 23, and the bending section of the U-shaped hanging ring is limited and fixed by the clamping limiting groove 29 on the first clamping block 3, and the middle lower side of the U-shaped hanging ring is mechanically limited and fixed by the clamping limiting groove 29 on the second clamping block 28, so as to further limit and fix the U-shaped hanging ring. At the same time, when the U-shaped hanging rings of different sizes and cross-sectional diameters are subjected to opening processing, the elastic force of the limiting spring rod 25 is adapted, and the first bolt 26 and the second bolt 27 are lifted and lowered to adapt to the U-shaped hanging rings of different sizes, so as to ensure that the two opening ends of the U-shaped hanging ring are symmetrical about the supporting cross plate 6, so as to ensure the accurate opening of the opening ends of the U-shaped hanging ring.

[0040] When the present invention is in use, after the U-shaped hanging ring is moved to the top-pushing horizontal plate 7 under the push of the first clamping block 3 and is fixed by the top-pushing clamping of the inner side of the top-pushing horizontal plate 7, the lifting motor 5 rotates the transmission rotating rod 9, and drives the two-way screw 8 through the meshing transmission gear plate 10, and brings together the two transmission slide blocks 13 on each two-way screw 8, thereby bringing together the lifting horizontal plates 11 on the upper and lower sides, thereby pushing the hole drilling machine 12 to drill holes on the two side opening ends of the U-shaped hanging ring at the same time, and a through waist-shaped groove is provided in the middle of the top-pushing horizontal plate 7 for the drill bit of the hole drilling machine 12 to penetrate. After the drilling is completed, the lifting motor 5 Reverse operation, separate the two rows of drilling machines 12, then move out the loading horizontal plate 22 containing the U-shaped hanging rings with holes through the electric slide 2, so that the staff can take out the U-shaped hanging rings with holes and place the U-shaped hanging rings without holes, and at the same time move in the loading horizontal plate 22 containing the U-shaped hanging rings without holes through the electric slide 2 on the other side, and drill holes through the drilling machines 12 again, so as to drill holes in a row, and at the same time, through the symmetrical drilling of the two rows of drilling machines 12, the drill length of the drilling machines 12 is shortened, the deflection torque of the drill bit during rotation is reduced, the drilling accuracy is improved, the drilling time is shortened, and the work efficiency is improved;

[0041] When the opening end of the U-shaped hanging ring moves onto the pushing cross plate 7, the pushing cross plate 7 is squeezed by the opening end of the U-shaped hanging ring and gathered toward the supporting cross plate 6, so that the telescopic support rod 15 is compressed and deflected, compressing the second spring 20 and stretching the first spring 18 at the same time, so that the elastic force of the first spring 18 and the second spring 20 is used to push the pushing cross plate 7 inwardly, and the opening end of the U-shaped hanging ring is pushed and clamped inwardly, and a limiting groove is provided on the upper surface of the pushing cross plate 7 for engaging and limiting the opening end of the U-shaped hanging ring, so as to further fix the opening end of the U-shaped hanging ring, thereby avoiding shaking and other deviations during drilling, and improving the drilling accuracy. When the U-shaped hanging ring is installed to one side of the first clamping block 3, the limiting spring rod 25 is used to The limiting clamp rod 23 is pushed back by elastic force, so that the U-shaped hanging ring is clamped and fixed by the limiting clamp rod 23, the bending section of the U-shaped hanging ring is limited and fixed by the clamping limiting groove 29 on the first clamping block 3, and the middle lower side of the U-shaped hanging ring is mechanically limited and fixed by the clamping limiting groove 29 on the second clamping block 28, so as to further limit and fix the U-shaped hanging ring. At the same time, when the U-shaped hanging rings of different sizes and cross-sectional diameters are opened, the elastic force of the limiting spring rod 25 is adapted, and the first bolt 26 and the second bolt 27 are raised and lowered to adapt to the U-shaped hanging rings of different sizes, so as to ensure that the two opening ends of the U-shaped hanging ring are symmetrical about the supporting cross plate 6, so as to ensure the accurate opening of the opening ends of the U-shaped hanging ring.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. The U-shaped hanging ring opening device for electric power fittings is characterized by: The invention comprises a working support (1), wherein a transmission box (4) is installed in the middle of the working support (1), a loading cross plate (22) is provided on both sides of the working support (1), a plurality of first clamping blocks (3) for fixing U-shaped hanging rings are installed on the loading cross plate (22), a supporting cross plate (6) is installed in the middle of the transmission box (4), a plurality of mounting plates (16) evenly distributed at equal distances are installed on both sides of the supporting cross plate (6), a pushing cross plate (7) is movably installed on the mounting plate (16), two lifting cross plates (11) symmetrically arranged in the middle of the transmission box (4) and located on both sides of the supporting cross plate (6), a transmission slider (13) is fixedly connected at both ends of each lifting cross plate (11), a plurality of hole drilling machines (12) evenly distributed at equal distances are installed on the opposite sides of the two lifting cross plates (11), and an electric slide table (2) is installed at both ends of each loading cross plate (22); The first clamping block (3) is mounted on the loading horizontal plate (22) through a mounting bracket (21); both sides of one side of the first clamping block (3) are fixedly connected to L-shaped support frames (24); two symmetrically arranged limit clamping rods (23) are provided between the two L-shaped support frames (24); a plurality of limit spring rods (25) are rotatably connected to the two sides of each limit clamping rod (23); and the ends of the limit spring rods (25) are respectively hinged to the first clamping block (3) and the L-shaped support frame (24); A first bolt (26) is threadedly penetrated in the middle of the mounting bracket (21), a second bolt (27) is threadedly penetrated on one side of the first bolt (26) on the mounting bracket (21), a second clamping block (28) is mounted on the second bolt (27), and the upper end of the first bolt (26) is in contact with the lower side of the U-shaped hanging ring; The side wall of the first clamping block (3) and the upper side of the second clamping block (28) are both provided with clamping limit grooves (29).

2. The U-shaped hanging ring hole opening device for electric power fittings according to claim 1 is characterized in that: The upper and lower rows of the hole-opening drills (12) are in one-to-one correspondence, and each pair of the hole-opening drills (12), each pair of the top-pushing horizontal plates (7) and the first clamping blocks (3) are in one-to-one correspondence. The loading horizontal plate (22) is reciprocated left and right on the working support (1) through the electric slide (2), and the hole-opening end of the U-shaped hanging ring is moved onto the top-pushing horizontal plate (7).

3. The U-shaped hanging ring hole opening device for electric power fittings according to claim 1 is characterized in that: A lifting motor (5) is installed in the middle of the lower side of the transmission box (4), and both ends of the driving shaft of the lifting motor (5) are fixedly connected with a transmission rotating rod (9), and both sides of the transmission box (4) are rotatably connected with a bidirectional screw rod (8).

4. The U-shaped hanging ring hole opening device for electric power fittings according to claim 3 is characterized in that: The transmission rotating rod (9) and the bidirectional screw rod (8) correspond to each other one by one. Each transmission rotating rod (9) and the corresponding bidirectional screw rod (8) are driven by two meshing transmission toothed discs (10). The bidirectional screw rod (8) is provided with two symmetrically arranged threaded sections, and each threaded section on the bidirectional screw rod (8) is respectively threadedly sleeved with a transmission slider (13).

5. The U-shaped hanging ring hole opening device for electric power fittings according to claim 1 is characterized in that: A through slide groove for a transmission slider (13) to pass through and slide in connection is provided on the side wall of the transmission box (4) near the end of the lifting horizontal plate (11), and limiting slide grooves (14) are provided on the inner side wall of the transmission box (4) and on both sides of the through slide groove, and a sliding block is fixedly connected to the end of the lifting horizontal plate (11) and is engaged and slidably connected with the limiting slide groove (14).

6. The U-shaped hanging ring hole opening device for electric power fittings according to claim 1, characterized in that: The two ends of the push horizontal plate (7) are rotatably connected to a telescopic support rod (15) on one side close to the mounting plate (16), and the two telescopic support rods (15) are in an inclined symmetrical structure. The lower end of the telescopic support rod (15) is rotatably connected to a transmission seat (19), and the transmission seat (19) is slidably connected to the mounting plate (16). A second spring (20) is installed between the two transmission seats (19), and a first spring (18) is installed on the other side of the two transmission seats (19), and one end of the first spring (18) is fixedly connected to the side of the mounting plate (16).

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