Grading ring support holding and bending device

Abstract

The utility model discloses a grading ring support bending device, which belongs to the field of electric power fitting processing equipment, and comprises a press machine, an upper die fixedly arranged with the output end of the press machine, two lower dies arranged on a workbench fixedly arranged with the press machine, and a plurality of annular grooves arranged on the two lower dies along the left-right direction, and a plurality of extrusion grooves matched with the annular grooves are formed in the upper mold. According to the utility model, the upper die and the two lower dies are arranged, the annular grooves are formed in the two lower dies, and the extrusion grooves matched with the annular grooves are formed in the upper die, so that a plurality of brackets can be placed on the two lower dies at the same time; the upper die is pushed downwards through a press machine to simultaneously bend the multiple supports, during bending, the two lower dies are stressed to rotate, the grading ring supports are in static contact with the upper die and the two lower dies, the dies are prevented from scratching the surfaces of products, and the production efficiency is improved while the bending quality is improved.

Description

Technical Field

[0001] The utility model belongs to the field of electric power hardware processing equipment, and in particular relates to a bending device for a pressure equalizing ring bracket. Background Art

[0002] The voltage-equalizing ring is a protective fitting among power fittings. Generally speaking, the voltage distribution on the insulator or insulator string is not uniform, which may generate corona. Its function is to evenly distribute the voltage on the insulator or insulator string to ensure that there is no potential difference between the various parts of the ring. The voltage distribution is improved, thereby achieving the effect of voltage balancing. The product structure mainly includes the voltage-equalizing ring body and the bracket. Its production process includes ring body bending, bracket bending, welding, etc., among which bracket bending is an important process. At present, many brackets are bent one by one by a bending machine during the production process, and the production efficiency is low.

[0003] After searching, the patent number is: CN108213268A, which provides a portable and adjustable hand-held steel bar bending machine based on TRIZ, which is composed of a bending machine body, a piston rod and a concave wheel. The bending machine body is composed of a machine body and a steel frame, the piston rod is composed of a rod body and a hook hand, and the concave wheel is composed of a wheel column. The benefits of this invention are: the hydraulic cylinder and the rod body cooperate with each other to pull the steel bars to bend; multiple groups of concave wheels are installed in the wheel holes to bend thick and thin steel bars of any angle and any bending degree; the rear handle and the front handle can fix the machine when the bending machine is in use; the external thread on the concave wheel and the internal thread on the wheel hole can tightly bite to prevent the concave wheel from falling off; the C-shaped hook groove on the hook hand can pull the steel bars to the greatest extent to prevent the steel bars from slipping.

[0004] The above solution bends the steel bars by using a piston rod and a concave wheel, and can only bend one at a time, resulting in low production efficiency, and can no longer meet the bending requirements of the existing equalizing ring bracket. Utility Model Content

[0005] The purpose of the utility model is to provide a pressure equalizing ring bracket bending device, which can bend multiple brackets at the same time, improve the bending efficiency while ensuring the bending quality, and ultimately achieve the improvement of production efficiency.

[0006] The utility model adopts the following technical scheme: a pressure equalizing ring bracket bending device, including a press, and an upper mold fixedly arranged at the output end of the press, two lower molds are arranged on a workbench fixedly arranged with the press, and a plurality of annular grooves are opened on the two lower molds along the left and right directions, and a plurality of extrusion grooves matched with the annular grooves are opened on the upper mold; two groups of fixed seat groups are arranged along the front and back directions on the upper end surface of the workbench, and each group of fixed seat groups is composed of fixed seats arranged on the end surface of the workbench along the left and right directions; the two fixed seats of each group of fixed seat groups are rotatably connected with the corresponding lower molds.

[0007] Furthermore, each of the fixed seats is slidably set on the upper end surface of the workbench along the front-rear direction, and the workbench is rotatably connected to two bidirectional threaded rods through two side plates fixed to the upper end surface of the workbench, and each bidirectional threaded rod is threadedly connected to the corresponding two fixed seats.

[0008] Furthermore, a first bevel gear is fixedly provided at the front end of each of the bidirectional threaded rods, and the front end surface of the workbench is rotatably connected to a synchronization shaft through two fixed plates, the two fixed plates are fixed to the corresponding side plates, and second bevel gears are fixedly provided at both ends of the synchronization shaft, and each second bevel gear is meshed with the corresponding first bevel gear, and a handwheel is fixedly provided at the left end of the synchronization shaft.

[0009] Furthermore, a shaft ring is fixedly provided on the upper end surface of each fixing seat, a shaft neck is rotatably connected inside the shaft ring, a spline is provided inside the shaft neck for left and right sliding, and keyways matching the splines are provided on both left and right end surfaces of the lower mold.

[0010] Furthermore, the upper end surface of the workbench is provided with two linkage devices, and both ends of the linkage devices are connected to the outer end surfaces of the corresponding splines.

[0011] Furthermore, the linkage device includes a rotating seat rotatably connected to the outer end faces of the two splines of each group of fixed seat groups, each rotating seat is hinged with a connecting rod inside, each connecting rod is hinged with a first lever and a second lever at one end away from the fixed seat, and a linkage rod is hinged between the first lever and the second lever.

[0012] Furthermore, the first lever includes a first rod portion and a second rod portion at an acute angle, the junction of the first rod portion and the second rod portion is rotatably connected to the corresponding fixed seat, the free end of the first rod portion is hinged to the corresponding connecting rod, and the second lever includes a third rod portion, a fourth rod portion and a fifth rod portion connected together at the inner ends, the junction of the third rod portion, the fourth rod portion and the fifth rod portion is rotatably connected to the corresponding fixed seat, and the free end of the third rod portion is hinged to the corresponding connecting rod; a connecting rod is hinged between the bottom end of the second rod portion and the bottom end of the fifth rod portion.

[0013] Furthermore, a slide plate is provided on the upper end surface of the workbench for sliding back and forth, the slide plate and the corresponding fixed seat are fixed by a vertical plate, a first hydraulic telescopic rod is fixed on the upper end surface of the slide plate, a connecting rod is hinged at the output end of the first hydraulic telescopic rod, and the top end of the connecting rod is hinged to the free end of the corresponding fourth rod portion.

[0014] Furthermore, the press comprises a second hydraulic telescopic rod, the output end of the second hydraulic telescopic rod is fixedly arranged with the upper mold, and the fixed end of the second hydraulic telescopic rod is fixedly arranged with the workbench through the top plate and the vertical plate.

[0015] Furthermore, the middle section of each bidirectional threaded rod is rotatably connected to an intermediate block, and the intermediate block is fixedly arranged on the workbench.

[0016] 1. The utility model sets an upper mold and two lower molds, and opens a plurality of annular grooves on the two lower molds, and opens a plurality of extrusion grooves matched with the annular grooves on the upper mold. During production, multiple brackets can be placed on the two lower molds at the same time, and the upper mold is pushed downward by a press to simultaneously bend the multiple brackets. When bending, the two lower molds are rotated under force, and the equalizing ring bracket is in static contact with the upper mold and the two lower molds, so as to avoid scratches on the product surface by the mold, thereby improving the production efficiency and the quality of bending.

[0017] 2. The utility model provides two sets of fixed seat groups and two bidirectional threaded rods, so that the two sets of fixed seat groups can move toward or away from each other synchronously, thereby achieving the purpose of adjusting the distance between the two lower molds and adjusting the bending angle of the equalizing pressure ring bracket.

[0018] 3. The utility model sets a spline and opens keyways matching the splines on both end faces of the lower mold. The lower mold can be installed and removed by moving the splines into or out of the keyways of the lower mold, thereby facilitating the installation and removal of the lower mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 This is a front view structural schematic diagram of the utility model;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the lower mold in the utility model;

[0022] Figure 4 It is a schematic diagram of the top view of the lower mold in the utility model;

[0023] Figure 5It is a schematic diagram of the internal three-dimensional structure of the lower mold, the shaft ring, the shaft neck and the fixing seat in the utility model;

[0024] Figure 6 It is a schematic diagram of the internal structure of the fixing seat in the utility model;

[0025] Figure 7 It is a three-dimensional structural schematic diagram of the spline, the shaft ring, the shaft neck and the lower mold in the utility model in the separated state;

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the upper mold in the utility model.

[0027] In the figure, 1, upper mold; 2, workbench; 3, lower mold; 4, annular groove; 5, extrusion groove; 6, fixed seat; 7, side plate; 8, bidirectional threaded rod; 9, first bevel gear; 10, fixed plate; 11, synchronous shaft; 12, second bevel gear; 13, shaft collar; 14, journal; 15, spline; 16, keyway; 17, rotating seat; 18, connecting rod; 19, first lever; 20, second lever; 21, first rod part; 22, second rod part; 23, third rod part; 24, fourth rod part; 25, fifth rod part; 26, connecting rod; 27, slide plate; 28, vertical plate; 29, first hydraulic telescopic rod; 30, connecting rod; 31, second hydraulic telescopic rod; 32, top plate; 33, vertical plate; 34, middle block. DETAILED DESCRIPTION

[0028] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0029] See also Figure 1-8 The pressure-equalizing ring bracket bending device described in the utility model includes a press, and an upper mold 1 fixedly arranged at the output end of the press, two lower molds 3 are arranged on the workbench 2 fixedly arranged at the press, and a plurality of annular grooves 4 are opened on the two lower molds 3 along the left-right direction, and a plurality of extrusion grooves 5 matched with the annular grooves 4 are opened on the upper mold 1; two groups of fixed seat groups are arranged along the front-to-back direction on the upper end surface of the workbench 2, and each group of fixed seat groups is composed of fixed seats 6 arranged on the upper end surface of the workbench 2 along the left-right direction; the two fixed seats 6 of each group of fixed seat groups are rotatably connected with the corresponding lower mold 3.

[0030] When in use, place the bracket of the equalizing pressure ring on the two lower molds 3 so that the bracket is located in the corresponding annular grooves 4 of the two lower molds 3. Several equalizing pressure ring brackets can be placed at the same time, and then start the press to drive the upper mold 1 to move downward, so that the upper mold 1 bends the bracket between the two lower molds 3. During the bending process, the two lower molds 3 are rotated under force, and the equalizing pressure ring bracket is in static contact with the upper mold 1 and the two lower molds 3 to prevent the mold from scratching the product surface.

[0031] In order to achieve the purpose of adjustable front-to-back spacing between the two lower molds 3, in the present embodiment, each fixed seat 6 is slidably set on the upper end surface of the workbench 2 along the front-to-back direction, and the workbench 2 is rotatably connected to two two-way threaded rods 8 through two side plates 7 fixed to the upper end surface of the workbench 2, and each two-way threaded rod 8 is threadedly connected to the corresponding two fixed seats 6. When the two-way threaded rod 8 rotates, it drives the corresponding two fixed seats 6 to move closer or farther, so that one end of the lower mold 3 moves closer or farther; in order to achieve synchronous movement of the two ends of the lower mold 3 closer or farther, in the present embodiment, the front end of each two-way threaded rod 8 is fixedly provided with a first bevel gear 9, and the front end surface of the workbench 2 is fixed by two The plate 10 is rotatably connected to a synchronization shaft 11, and the two fixed plates 10 are fixedly arranged with the corresponding side plates 7. The left and right ends of the synchronization shaft 11 are fixedly arranged with second bevel gears 12, and each second bevel gear 12 is meshed with the corresponding first bevel gear 9. A handwheel is fixedly arranged on the left end of the synchronization shaft 11; the synchronization shaft 11 is driven to rotate by rotating the handwheel, so that the synchronization shaft 11 drives the two bidirectional threaded rods 8 to rotate synchronously and in the same direction through the second bevel gear 12 and the first bevel gear 9, thereby driving the two groups of fixed seat groups to move closer or farther, and then driving the two lower molds 3 to move closer or farther, thereby achieving the purpose of adjusting the front and rear spacing of the two lower molds 3, and then adjusting the bending angle of the equalizing pressure ring bracket.

[0032] In order to increase the stability of the rotation of the bidirectional threaded rod 8, in this embodiment, the middle section of each bidirectional threaded rod 8 is rotatably connected to the intermediate block 34, and the intermediate block 34 is fixed to the workbench 2; when the bidirectional threaded rod 8 rotates, it is simultaneously rotatably connected to the workbench 2 through the intermediate block 34 and the two side plates 7, thereby increasing the stability of the rotation of the bidirectional threaded rod 8.

[0033] In production, due to the different diameters of the equalizing ring bracket, it is often necessary to replace the lower molds 3 of different specifications. In order to facilitate the replacement of the lower mold 3, in this embodiment, the upper end surface of each fixed seat 6 is fixedly provided with a shaft ring 13, and the internal rotation of the shaft ring 13 is connected to the shaft neck 14, and the internal left and right sliding splines 15 are provided on the shaft neck 14. The left and right end surfaces of the lower mold 3 are provided with keyways 16 that are compatible with the splines 15; when installing the lower mold 3, the splines 15 of the two fixed seats 6 in each group are moved away from each other so that the lower mold 3 can be placed between the corresponding two fixed seats 6, and then the two splines 15 are moved closer so that the ends of the two splines 15 that are close to each other are moved closer. They are all inserted into the corresponding keyways 16 of the lower mold 3. During use, when the upper mold 1 presses down the equalizing ring bracket, the lower mold 3 will rotate due to the force, so that the annular groove 4 of the lower mold 3 and the equalizing ring bracket remain approximately stationary, to avoid the mold from scratching the product surface. When the lower mold 3 rotates, the spline 15 drives the shaft neck 14 to rotate in the shaft ring 13; when the lower mold 3 needs to be replaced, the corresponding two splines 15 are moved away from each other until the close ends of the two splines 15 are separated from the keyways 16 of the lower mold 3, and then the lower mold 3 is removed, and a new lower mold 3 is installed; it is easy to replace the lower mold 3 and improves production efficiency. After the lower mold 3 is replaced, the matching upper mold 1 also needs to be replaced.

[0034] In order to drive the spline 15 to move left and right so as to insert into the keyway 16 of the lower mold 3 or detach from the keyway 16, in this embodiment, two linkage devices are provided on the upper end surface of the workbench 2, and both ends of the linkage devices are connected to the outer end surfaces of the corresponding splines 15; when in use, the corresponding two splines 15 are driven to move in synchronous directions by the linkage device, so that the corresponding two splines 15 are simultaneously inserted into the two keyways 16 of the lower mold 3, or are simultaneously detached from the two keyways 16 of the lower mold 3, thereby realizing the replacement and installation of the lower mold 3.

[0035] In this embodiment, the linkage device includes a rotating seat 17 that is rotatably connected to the outer end faces of the two splines 15 of each fixed seat group, and a connecting rod 18 is hinged inside each rotating seat 17. The end of each connecting rod 18 away from the fixed seat 6 is hinged to a first lever 19 and a second lever 20, respectively, and a linkage rod 26 is hinged between the first lever 19 and the second lever 20. When in use, by rotating the second lever 20 in one direction, the second lever 20 pushes one of the splines 15 to move into one of the key slots 16 of the lower mold 3 through the corresponding connecting rod 18, and at the same time, the second lever 20 The first lever 19 is driven to move by the connecting rod 26, so that the first lever 19 pushes the other spline 15 to move into the other keyway 16 of the lower mold 3 through the corresponding connecting rod 18, so that the two splines 15 move into the two keyways 16 of the lower mold 3 at the same time, so as to be inserted into the two keyways 16 of the lower mold 3, thereby achieving the purpose of installing the lower mold 3; when the second lever 20 is rotated in the other direction, the second lever 20 drives the two splines 15 away from the lower mold 3 through the connecting rod 26, the first lever 19 and the two connecting rods 18, so that the two splines 15 are simultaneously disengaged from the two keyways 16 of the lower mold 3, thereby achieving the disassembly of the lower mold 3.

[0036] In this embodiment, the first lever 19 includes a first rod portion 21 and a second rod portion 22 at an acute angle, the junction of the first rod portion 21 and the second rod portion 22 is rotatably connected to the corresponding fixed seat 6, the free end of the first rod portion 21 is hinged to the corresponding connecting rod 18, and the second lever 20 includes a third rod portion 23, a fourth rod portion 24 and a fifth rod portion 25 connected together at the inner ends, the junction of the third rod portion 23, the fourth rod portion 24 and the fifth rod portion 25 is rotatably connected to the corresponding fixed seat 6, and the free end of the third rod portion 23 is hinged to the corresponding connecting rod 18; a connecting rod 26 is hinged between the bottom ends of the second rod portion 22 and the bottom ends of the fifth rod portion 25; by rotating the fourth rod portion 24, the corresponding two splines 15 can be moved away from or close to each other; the specific movement principle is that the fourth rod portion 24 is rotated upward, so that the third rod portion 23 rotates to the right and pushes the corresponding spline 15 to move forward through the corresponding connecting rod 18. The lower mold 3 slides in the direction of the fifth rod 25, and the fifth rod 25 pulls the connecting rod 26 to move leftward, so that the second rod 22 and the first rod 21 rotate clockwise at the same time, and the first rod 21 rotates through the corresponding connecting rod 18 to push the corresponding spline 15 to slide in the direction of the lower mold 3, so that when the fourth rod 24 is rotated upward, the corresponding two splines 15 are driven to move closer, so that the inner ends of the splines 15 are inserted into the key slots 16 of the lower mold 3, and the lower mold 3 is installed. Conversely, when the fourth rod 24 is rotated downward, the corresponding two splines 15 can be driven to move away, so that the inner ends of the two splines 15 are separated from the key slots 16 of the lower mold 3, and the lower mold 3 is removed for replacement; in specific use, when the lower mold 3 is subjected to force and rotates, the splines 15 and the shaft neck 14 are driven to rotate in the corresponding shaft ring 13, and the rotating seat 17 is rotationally connected with the splines 15, and the rotating seat 17 remains stationary.

[0037] In order to achieve the purpose of driving the fourth rod part 24 to rotate, in this embodiment, a slide plate 27 is slidably arranged on the upper end surface of the workbench 2, and the slide plate 27 is fixed to the corresponding fixed seat 6 through a vertical plate 28. A first hydraulic telescopic rod 29 is fixedly arranged on the upper end surface of the slide plate 27, and a connecting rod 30 is hinged at the output end of the first hydraulic telescopic rod 29, and the top end of the connecting rod 30 is hinged to the free end of the corresponding fourth rod part 24; when the lower mold 3 needs to be replaced, the first hydraulic telescopic rod 29 is started, and the fourth rod part 24 is driven to rotate downward through the corresponding connecting rod 30, so that the corresponding two The splines 15 move away from each other, so that the inner ends of the two splines 15 are disengaged from the key slots 16 of the lower mold 3, the lower mold 3 is removed, and then the new lower mold 3 is placed between the corresponding two fixed seats 6, and then the first hydraulic telescopic rod 29 drives the fourth rod portion 24 to rotate upward through the connecting rod 30, driving the corresponding two splines 15 to move closer, so that the inner ends of the splines 15 are inserted into the key slots 16 of the lower mold 3, thereby realizing the installation of the lower mold 3; when adjusting the front-to-back spacing between the two groups of fixed seats, the first hydraulic telescopic rod 29 will move synchronously with the corresponding fixed seat 6 through the slide plate 27.

[0038] In this embodiment, the press includes a second hydraulic telescopic rod 31 , the output end of the second hydraulic telescopic rod 31 is fixedly arranged with the upper mold 1 , and the fixed end of the second hydraulic telescopic rod 31 is fixedly arranged with the workbench 2 through the top plate 32 and the vertical plate 33 .

[0039] The working principle of the utility model is as follows: when in use, the bracket of the equalizing ring is placed on the two lower molds 3 so that the bracket is located in the corresponding annular grooves 4 of the two lower molds 3. Several equalizing ring brackets can be placed at the same time, and then the second hydraulic telescopic rod 31 is started to drive the upper mold 1 to move downward, so that the upper mold 1 bends the bracket between the two lower molds 3. During the bending process, the two lower molds 3 are rotated under force, and the equalizing ring bracket is in static contact with the upper mold 1 and the two lower molds 3 to prevent the mold from scratching the product surface; when the front and rear spacing of the two lower molds 3 needs to be adjusted, the hand wheel is turned to drive the two sets of fixed seats in turn through the second bevel gear 12, the first bevel gear 9 and the bidirectional threaded rod 8. 6 groups of synchronous movements of approaching or moving away can achieve the purpose of adjusting the distance between the two lower molds 3; when the lower mold 3 needs to be replaced, the first hydraulic telescopic rod 29 is started, and the fourth stem is driven to rotate downward through the corresponding connecting rod 30, so that the corresponding two splines 15 move away from each other, so that the inner ends of the two splines 15 are disengaged from the key slot 16 of the lower mold 3, the lower mold 3 is removed, and then the new lower mold 3 is placed between the corresponding two fixed seats 6, and then the first hydraulic telescopic rod 29 drives the fourth rod 24 to rotate upward through the connecting rod 30, driving the corresponding two splines 15 to move closer, so that the inner ends of the splines 15 are inserted into the key slot 16 of the lower mold 3, and the lower mold 3 is installed.

Claims

1. A bending device for a pressure equalizing ring bracket, characterized in that: The invention comprises a press machine, and an upper die (1) fixedly arranged at the output end of the press machine; two lower dies (3) are arranged on a workbench (2) fixedly arranged at the press machine; the two lower dies (3) are each provided with a plurality of annular grooves (4) in the left-right direction; the upper die (1) is provided with a plurality of extrusion grooves (5) matched with the annular grooves (4); two groups of fixed seat groups are arranged on the upper end surface of the workbench (2) in the front-back direction; each group of fixed seat groups is composed of fixed seats (6) arranged on the upper end surface of the workbench (2) in the left-right direction; and the two fixed seats (6) of each group of fixed seat groups are rotatably connected to the corresponding lower die (3).

2. The bending device for the pressure equalizing ring bracket according to claim 1 is characterized in that: Each of the fixing seats (6) is slidably arranged on the upper end surface of the workbench (2) in the front-rear direction. The workbench (2) is rotatably connected to two bidirectional threaded rods (8) via two side plates (7) fixedly arranged on the upper end surface of the workbench (2). Each bidirectional threaded rod (8) is threadedly connected to the corresponding two fixing seats (6).

3. The bending device for the pressure equalizing ring bracket according to claim 2 is characterized in that: A first bevel gear (9) is fixedly arranged at the front end of each bidirectional threaded rod (8); a synchronous shaft (11) is rotatably connected to the front side of the workbench (2) via two fixed plates (10); the two fixed plates (10) are fixedly arranged with corresponding side plates (7); second bevel gears (12) are fixedly arranged at both left and right ends of the synchronous shaft (11); each second bevel gear (12) is meshed with the corresponding first bevel gear (9); and a hand wheel is fixedly arranged at the left end of the synchronous shaft (11).

4. The bending device for the pressure equalizing ring bracket according to claim 3 is characterized in that: A shaft collar (13) is fixedly disposed on the upper end surface of each fixed seat (6), a shaft neck (14) is rotatably connected inside the shaft collar (13), a spline (15) is slidably disposed inside the shaft neck (14) to the left and right, and keyways (16) matching the splines (15) are provided on both left and right end surfaces of the lower mold (3).

5. The bending device for the pressure equalizing ring bracket according to claim 4 is characterized in that: The upper end surface of the workbench (2) is provided with two linkage devices, and both ends of the linkage devices are connected to the outer end surfaces of corresponding splines (15).

6. The bending device for the pressure equalizing ring bracket according to claim 5 is characterized in that: The linkage device comprises a rotating seat (17) rotatably connected to the outer end surfaces of the two splines (15) of each fixed seat group, each rotating seat (17) is hinged with a connecting rod (18) inside, and each connecting rod (18) is hinged with a first lever (19) and a second lever (20) at one end away from the fixed seat (6), and a linkage rod (26) is hinged between the first lever (19) and the second lever (20).

7. The bending device for the pressure equalizing ring bracket according to claim 6 is characterized in that: The first lever (19) comprises a first rod portion (21) and a second rod portion (22) at an acute angle, the junction of the first rod portion (21) and the second rod portion (22) being rotatably connected to a corresponding fixed seat (6), the free end of the first rod portion (21) being hinged to a corresponding connecting rod (18), the second lever (20) comprising a third rod portion (23), a fourth rod portion (24) and a fifth rod portion (25) connected together at their inner ends, the junction of the third rod portion (23), the fourth rod portion (24) and the fifth rod portion (25) being rotatably connected to a corresponding fixed seat (6), the free end of the third rod portion (23) being hinged to a corresponding connecting rod (18); a connecting rod (26) is hinged between the bottom end of the second rod portion (22) and the bottom end of the fifth rod portion (25).

8. The bending device for a pressure equalizing ring bracket according to claim 6 is characterized in that: A slide plate (27) is provided on the upper end surface of the workbench (2) to slide back and forth, the slide plate (27) and the corresponding fixed seat (6) are fixedly provided via a vertical plate (28), a first hydraulic telescopic rod (29) is fixedly provided on the upper end surface of the slide plate (27), a connecting rod (30) is hingedly connected to the output end of the first hydraulic telescopic rod (29), and the top end of the connecting rod (30) is hingedly connected to the free end of the corresponding fourth rod portion (24).

9. The bending device for a pressure equalizing ring bracket according to claim 1, characterized in that: The press comprises a second hydraulic telescopic rod (31), the output end of the second hydraulic telescopic rod (31) being fixedly arranged on the upper mold (1), and the fixed end of the second hydraulic telescopic rod (31) being fixedly arranged on the workbench (2) via a top plate (32) and a vertical plate (33).

10. The bending device of the equalizing ring bracket according to claim 2, characterized in that: The middle section of each bidirectional threaded rod (8) is rotatably connected to an intermediate block (34), and the intermediate block (34) is fixedly arranged on the workbench (2).

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