Hydraulic clamp for electric power overhaul

Abstract

The invention relates to the technical field of hydraulic pincers, in particular to a hydraulic pincer for electric power overhaul, which comprises a protective shell and a shell cover, the upper surface of the protective shell is fixedly connected with a pincer head, the pincer head is provided with a mounting port, and two pressing knives are arranged in the mounting port; the upper pressing cutter is fixedly connected with the upper inner wall of the mounting opening, the lower pressing cutter is fixedly connected with a driving rod, the cross section of the driving rod is T-shaped, and the driving rod is slidably connected with the protective shell; and a mounting plate is fixedly connected to the interior of the protective shell, and a rotating column is connected to the mounting plate through a first torsion spring. According to the hydraulic clamp, the force conversion rate is relatively high, a user can easily cut off a part of objects with relatively high hardness in a labor-saving manner in the electric power overhaul process, electric power overhaul work is facilitated, and the practicability of the hydraulic clamp is relatively high.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic pliers, and in particular to a hydraulic pliers for electric power maintenance. Background Art

[0002] With the continuous development of society and the continuous advancement of science and technology, the technology related to hydraulic pliers is also constantly improving. Hydraulic pliers are divided into many categories, including mechanical cable wiring pliers, steel core cable hydraulic pliers, manual hydraulic pliers, electric hydraulic pliers, etc.

[0003] A comparative document with publication number "CN112247233A" discloses a hydraulic pliers for power maintenance, comprising a pliers head, an inner surface of the pliers head being provided with a movable groove, an upper pressing knife being fixedly connected above the inner surface of the movable groove, a lower pressing knife being movably connected below the inner surface of the movable groove, and a movable column being fixedly connected to the center of the bottom of the lower pressing knife.

[0004] According to the above-mentioned comparative documents, the hydraulic pliers traditionally used currently have the following problems: the force conversion rate of the hydraulic pliers is relatively poor, which makes it very strenuous for users to use the hydraulic pliers to cut objects during power maintenance. Some relatively hard objects are difficult to cut, which is not conducive to the power maintenance work. The practicality of the hydraulic pliers is poor. Summary of the invention

[0005] The purpose of the present invention is to solve the following shortcomings in the prior art: the conventional hydraulic pliers currently used have a relatively poor force conversion rate, which causes users to find it very laborious to use the hydraulic pliers to cut objects during power maintenance. Some relatively hard objects are difficult to cut, which is not conducive to power maintenance work. The practicability of the hydraulic pliers is relatively poor, and a hydraulic pliers for power maintenance is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A hydraulic pliers for electric power maintenance, comprising a protective shell and a shell cover, wherein a pliers head is fixedly connected to the upper surface of the protective shell, a mounting opening is provided on the pliers head, two pressing knives are arranged in the mounting opening, the pressing knives located at the upper end are fixedly connected to the upper inner wall of the mounting opening, and a driving rod is fixedly connected to the pressing knives located at the lower end, the cross section of the driving rod is T-shaped, and the driving rod is slidably connected to the protective shell; The protective shell is fixedly connected with a mounting plate inside, the mounting plate is connected with a rotating column via a first torsion spring, the rotating column is fixedly connected with a horizontally arranged extrusion block, the extrusion block is provided with a gravity assembly, the gravity assembly includes a gravity block, the extrusion block is provided with a first sealing cavity, a sealing block is slidably connected in the first sealing cavity, the cross section of the sealing block is T-shaped, the sealing block passes through one end of the first sealing cavity and is fixedly connected to the gravity block, and the sealing block is connected to the inner wall of the first sealing cavity via a first spring; A second sealing cavity is provided on the rotating column, a sealing plug is slidably connected inside the second sealing cavity, and the second sealing cavity is communicated with the first sealing cavity.

[0007] As a preferred solution, a threaded rod is threadedly connected to the mounting plate, the threaded rod is rotatably connected to the protective shell, a rectangular piece is rotatably connected to the threaded rod, a telescopic rod is fixedly connected to one side surface of the rectangular piece, one end of the telescopic rod away from the rectangular piece is fixedly connected to the mounting plate, a rotating shaft is rotatably connected to one side of the rectangular piece, and the rotating shaft is fixedly connected to the sealing plug.

[0008] As a preferred solution, a fixing ring used in conjunction with the threaded rod is rotatably connected to the surface of one side of the mounting plate, a friction block is fixedly connected to the interior of the fixing ring, the cross-section of the friction block is arranged in a circular ring shape, a second torsion spring is sleeved on the fixing ring, one end of the second torsion spring is fixedly connected to the fixing ring, and the other end of the second torsion spring is fixedly connected to the mounting plate.

[0009] As a preferred solution, sliding grooves are provided on both side surfaces of the pliers head, a bending block is slidably connected in each of the sliding grooves, two of the bending blocks are connected by a fixed block, the cross-section of the fixed block is concave-shaped, an opening for vertical movement of the fixed block is provided on the protective shell, a rotating piece is fixedly connected to the fixing ring, the lower surface of the rotating piece is in contact with the surface of the fixed block, a second spring is fixedly connected in each of the sliding grooves, and one end of the second spring is fixedly connected to the bending block.

[0010] As a preferred solution, each of the bending blocks is slidably connected to two sliding rods, each of the sliding rods is sleeved with a third spring, one end of the third spring is fixedly connected to the sliding rod, the other end of the third spring is fixedly connected to the bending block, one end of the sliding rod is fixedly connected to a splint, and the surface of the splint is fixedly connected to a rubber block.

[0011] As a preferred solution, two limit blocks are fixedly connected to the two side surfaces of the pliers head, each of the limit blocks is provided with a limit groove, the cross-section of the limit groove is a right-angled trapezoid, and one end of each sliding rod away from the clamp plate is against the inclined surface of the corresponding limit groove.

[0012] As a preferred solution, a plurality of suction cups are slidably connected to the lower surface of the protective shell, and the plurality of suction cups are evenly and equidistantly arranged.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. When the sealing block extends to the outside of the first sealing cavity, according to the lever principle, the distance between the gravity block and the rotating column can be increased, thereby increasing the length of the power arm, making it more convenient and labor-saving to move the driving rod upward, thereby enabling the two pressing knives to cut the objects, and the force conversion rate is relatively good. During the power maintenance process, the user can easily and labor-savingly cut off some relatively hard objects, which is conducive to the power maintenance work, and the hydraulic pliers have good practicality; 2. When the distance between the two clamps in the same vertical plane is reduced, the four clamps are evenly distributed on both sides of the clamp head. After the two pressing knives cut the object, the object will be divided into two sections from a whole. In the process of reducing the distance between the two clamps, the rubber blocks on their surfaces will be closely attached to the surfaces of both sides of each section of the object, thereby preventing the object from falling directly on the ground after being cut, which is conducive to preventing damage to the object; 3. When the gravity block moves downward under the action of gravity, it will squeeze the suction cup so that it is tightly adsorbed on the ground, thereby avoiding relative sliding between the protective shell and the ground, so as to improve the stability of the pressure knife when shearing objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front structural schematic diagram of a hydraulic pliers for power maintenance proposed by the present invention; Figure 2 It is a schematic diagram of the front three-dimensional structure of the clamp head and the extrusion block; Figure 3 It is a schematic diagram of the side three-dimensional structure of the clamp head and the extrusion block; Figure 4 It is a schematic diagram of the back three-dimensional structure of the clamp head and the extrusion block; Figure 5 It is a schematic diagram of the partial cross-sectional structure of the rotating column and the fixed ring.

[0015] In the figure: 1 protective shell, 2 suction cup, 3 clamp head, 4 limit block, 5 slide rod, 6 clamp plate, 7 drive rod, 8 bending block, 9 press knife, 10 second spring, 11 mounting plate, 12 telescopic rod, 13 first spring, 14 sealing block, 15 gravity block, 16 first sealing chamber, 17 extrusion block, 18 third spring, 19 second torsion spring, 20 fixing ring, 21 rotating column, 22 rotating shaft, 23 threaded rod, 24 fixing block, 25 rectangular sheet, 26 rotating sheet, 27 friction block, 28 sealing plug, 29 first torsion spring. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] Reference Figure 1-Figure 5 A hydraulic pliers for electric power maintenance, comprising a protective shell 1 and a shell cover, the protective shell 1 and the shell cover are detachable, a pliers head 3 is fixedly connected to the upper surface of the protective shell 1, a mounting opening is provided on the pliers head 3, two pressing knives 9 are arranged in the mounting opening, the pressing knives 9 located at the top are fixedly connected to the upper inner wall of the mounting opening, a driving rod 7 is fixedly connected to the pressing knives 9 located at the bottom, the cross section of the driving rod 7 is T-shaped, the driving rod 7 is slidably connected to the protective shell 1, a mounting plate 11 is fixedly connected to the inside of the protective shell 1, and a through hole is formed on the mounting plate 11 A rotating column 21 is connected via a first torsion spring 29, a horizontally arranged extrusion block 17 is fixedly connected to the rotating column 21, a gravity assembly is arranged on the extrusion block 17, the gravity assembly includes a gravity block 15, a first sealing cavity 16 is opened on the extrusion block 17, a sealing block 14 is slidably connected in the first sealing cavity 16, a cross section of the sealing block 14 is T-shaped, the sealing block 14 passes through one end of the first sealing cavity 16 and is fixedly connected to the gravity block 15, and the sealing block 14 is connected to the inner wall of the first sealing cavity 16 through the first spring 13.

[0018] A second sealed cavity is provided on the rotating column 21, and a sealing plug 28 is slidably connected inside the second sealed cavity. The second sealed cavity and the first sealed cavity 16 are communicated with each other, and a threaded rod 23 is threadedly connected to the mounting plate 11, and the threaded rod 23 is rotatably connected to the protective shell 1, and a rectangular piece 25 is rotatably connected to the threaded rod 23, and a telescopic rod 12 is fixedly connected to a surface of one side of the rectangular piece 25, and an end of the telescopic rod 12 away from the rectangular piece 25 is fixedly connected to the mounting plate 11, and a rotating shaft 22 is rotatably connected to one side of the rectangular piece 25, and the rotating shaft 22 is fixedly connected to the sealing plug 28. During the process of threaded connection between the threaded rod 23 and the mounting plate 11, the threaded rod 23 will rotate relative to the rectangular piece 25, and the rectangular piece 25 will move along the threaded rod 23. When the rectangular piece 25 moves in a direction close to the mounting plate 11, the telescopic rod 12 will be deformed, and during the process of the rotating shaft 22 moving together with the rectangular piece 25, it will drive the sealing plug 28 to slide in the second sealed cavity, and the rectangular piece 25 will not move relative to the threaded rod 23.

[0019] A fixing ring 20 used in conjunction with the threaded rod 23 is rotatably connected to the surface of one side of the mounting plate 11, a friction block 27 is fixedly connected to the interior of the fixing ring 20, and the cross section of the friction block 27 is arranged in a circular ring shape, a second torsion spring 19 is sleeved on the fixing ring 20, one end of the second torsion spring 19 is fixedly connected to the fixing ring 20, and the other end of the second torsion spring 19 is fixedly connected to the mounting plate 11, and grooves are provided on both side surfaces of the pliers head 3, and a bending block 8 is slidably connected in each groove, and the two bending blocks 8 are connected by a fixing block 24, and the cross section of the fixing block 24 is arranged in a concave shape, and an opening for the vertical movement of the fixing block 24 is provided on the protective shell 1, and the fixing ring A rotating piece 26 is fixedly connected to 20, and the lower surface of the rotating piece 26 is in contact with the surface of the fixed block 24. A second spring 10 is fixedly connected in each slide groove, and one end of the second spring 10 is fixedly connected to the bending block 8. When the outer surface of the threaded rod 23 contacts the inner surface of the annular friction block 27, since the surface of the friction block 27 in contact with the threaded rod 23 is relatively rough, the friction force when the friction block 27 and the threaded rod 23 contact is relatively large. In the subsequent process of threaded connection between the threaded rod 23 and the mounting plate 11, the threaded rod 23 will drive the friction block 27 to rotate together, and the fixing ring 20 will rotate relative to the mounting plate 11 at the same time, and the second torsion spring 19 will be deformed.

[0020] Each bending block 8 is slidably connected to two sliding rods 5, each sliding rod 5 is sleeved with a third spring 18, one end of the third spring 18 is fixedly connected to the sliding rod 5, and the other end of the third spring 18 is fixedly connected to the bending block 8. One end of the sliding rod 5 is fixedly connected to a clamp plate 6, and the surface of the clamp plate 6 is fixedly connected to a rubber block. Two limit blocks 4 are fixedly connected to the two side surfaces of the clamp head 3, and each limit block 4 is provided with a limit groove, and the cross-section of the limit groove is a right-angled trapezoid. One end of each sliding rod 5 away from the clamp plate 6 is against the inclined surface of the corresponding limit groove, and the fixing ring 20 and the mounting plate 11 rotate relative to each other. During the process, the rotating piece 26 will be driven to rotate together. During the rotation of the rotating piece 26, it will rotate against the surface of the fixed block 24, so that the fixed block 24 moves downward, and the two bending blocks 8 move downward at the same time. In the process of each bending block 8 driving each sliding rod 5 to move downward together, one end of each sliding rod 5 will move against the inclined surface of the corresponding limit groove, and the distance between the two sliding rods 5 will be reduced. Each third spring 18 will be deformed at the same time, and the distance between the two splints 6 in the same vertical plane will be reduced. The rubber block on the surface of the splint 6 will fit the surface of the object to prevent the object from falling directly on the ground.

[0021] The lower surface of the protective shell 1 is slidably connected to a plurality of suction cups 2, which are evenly and equidistantly arranged. When the gravity block 15 moves downward under the action of gravity, the gravity block 15 will squeeze the suction cup 2 so that it is tightly adsorbed on the ground, thereby avoiding relative sliding between the protective shell 1 and the ground, so as to improve the stability of the pressing knife 9 when cutting objects.

[0022] In the present invention, when in use, the object to be cut is placed between the two pressing knives 9, and then the threaded rod 23 is rotated. During the process of threaded connection between the threaded rod 23 and the mounting plate 11, the threaded rod 23 and the rectangular sheet 25 rotate relative to each other, and the rectangular sheet 25 moves along the threaded rod 23. When the rectangular sheet 25 moves in the direction close to the mounting plate 11, the telescopic rod 12 is deformed, and the rotating shaft 22 moves together with the rectangular sheet 25, which drives the sealing plug 28 to slide in the second sealing cavity. The sealing performance of the connection between the sealing plug 28 and the second sealing cavity is good. The first sealing cavity 16 and the second sealing cavity are both filled with liquid. The sealing block 14 slides in the first sealing cavity 16 at the same time, and one end of the sealing block 14 extends to the outside of the first sealing cavity 16 at the same time. The gravity block 15 moves in the direction away from the extrusion block 17. In the initial state, the extrusion block 17 is horizontally arranged and in a balanced state. At this time, the surface of the extrusion block 17 is in contact with the lower surface of the driving rod 7.

[0023] After the gravity block 15 moves, the overall center of gravity formed by the extrusion block 17 and the gravity block 15 will shift. The mass of the gravity block 15 is large. Under the action of gravity, the gravity block 15 will move downward, and the extrusion block 17 and the rotating column 21 will simultaneously rotate relative to the mounting plate 11. Since one end of the first torsion spring 29 is fixedly connected to the mounting plate 11, and the other end of the first torsion spring 29 is fixedly connected to the rotating column 21, the first torsion spring 29 is deformed at the same time. When the gravity block 15 moves downward rapidly under the action of gravity, one end of the extrusion block 17 will quickly move against the lower surface of the driving rod 7, and the driving rod 7 will move upward inside the protective shell 1. During the rapid upward movement of the driving rod 7, the pressing knife 9 below will be driven to move upward, thereby cutting off the objects between the two pressing knives 9.

[0024] When the sealing block 14 extends to the outside of the first sealing cavity 16, according to the lever principle, the distance between the gravity block 15 and the rotating column 21 can be increased, thereby increasing the length of the power arm, making it more convenient and labor-saving to move the driving rod 7 upward, thereby enabling the two pressing knives 9 to cut the objects. The force conversion rate is relatively good, and the user can easily and labor-savingly cut off some relatively hard objects during the power maintenance process, which is beneficial to the power maintenance work, and the hydraulic pliers have good practicality.

[0025] During the process of threaded connection between the threaded rod 23 and the mounting plate 11, one end of the threaded rod 23 will extend into the interior of the fixing ring 20. When the outer surface of the threaded rod 23 contacts the inner surface of the annular friction block 27, since the surface of the friction block 27 in contact with the threaded rod 23 is relatively rough, the friction force when the friction block 27 and the threaded rod 23 contact each other is relatively large. In the subsequent process of threaded connection between the threaded rod 23 and the mounting plate 11, the threaded rod 23 will drive the friction block 27 to rotate together, and the fixing ring 20 will rotate relative to the mounting plate 11 at the same time, thereby driving the rotating piece 26 to rotate together. During the rotation of the rotating piece 26, it will rotate against the surface of the fixing block 24, and the fixing block 24 will move downward at the same time. Since the two bending blocks 8 are fixedly connected to the fixing block 24, the two bending blocks 8 move downward at the same time. During the process of all the sliding bars 5 on each bending block 8 moving downward together, one end of the sliding bar 5 will move against the inclined surface of the corresponding limit groove.

[0026] The distance between the two sliding bars 5 will be reduced, and each third spring 18 will be deformed at the same time. The distance between the two clamps 6 in the same vertical plane will be reduced. The four clamps 6 are evenly distributed on both sides of the clamp head 3. After the two pressing knives 9 cut the article, the article will be divided into two sections from a whole. In the process of reducing the distance between the two clamps 6, the rubber blocks on their surfaces will respectively adhere to the two side surfaces of each section of the article, thereby preventing the article from falling directly to the ground after being cut, which is beneficial to prevent damage to the article.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic pliers for power maintenance, comprising a protective housing (1) and a housing cover, characterized in that: A pliers head (3) is fixedly connected to the upper surface of the protective housing (1), a mounting opening is provided on the pliers head (3), two pressing knives (9) are arranged in the mounting opening, the pressing knives (9) located at the upper end are fixedly connected to the upper inner wall of the mounting opening, and a driving rod (7) is fixedly connected to the pressing knife (9) located at the lower end, the driving rod (7) has a T-shaped cross section, and the driving rod (7) is slidably connected to the protective housing (1); The protective shell (1) is fixedly connected to a mounting plate (11) inside, the mounting plate (11) is connected to a rotating column (21) via a first torsion spring (29), the rotating column (21) is fixedly connected to a horizontally arranged extrusion block (17), the extrusion block (17) is provided with a gravity assembly, the gravity assembly comprises a gravity block (15), the extrusion block (17) is provided with a first sealing cavity (16), a sealing block (14) is slidably connected inside the first sealing cavity (16), the cross section of the sealing block (14) is T-shaped, the sealing block (14) passes through one end of the first sealing cavity (16) and is fixedly connected to the gravity block (15), the sealing block (14) is connected to the inner wall of the first sealing cavity (16) via a first spring (13); The rotating column (21) is provided with a second sealing cavity, the interior of the second sealing cavity is slidably connected with a sealing plug (28), and the second sealing cavity is communicated with the first sealing cavity (16).

2. The hydraulic pliers for electric power maintenance according to claim 1, characterized in that: A threaded rod (23) is threadedly connected to the mounting plate (11); the threaded rod (23) is rotatably connected to the protective housing (1); a rectangular sheet (25) is rotatably connected to the threaded rod (23); a telescopic rod (12) is fixedly connected to a surface of one side of the rectangular sheet (25); an end of the telescopic rod (12) away from the rectangular sheet (25) is fixedly connected to the mounting plate (11); a rotating shaft (22) is rotatably connected to one side of the rectangular sheet (25); and the rotating shaft (22) is fixedly connected to the sealing plug (28).

3. The hydraulic pliers for electric power maintenance according to claim 1, characterized in that: A fixing ring (20) used in conjunction with the threaded rod (23) is rotatably connected to a surface of one side of the mounting plate (11); a friction block (27) is fixedly connected to the interior of the fixing ring (20); the cross section of the friction block (27) is in the shape of a circular ring; a second torsion spring (19) is sleeved on the fixing ring (20); one end of the second torsion spring (19) is fixedly connected to the fixing ring (20); and the other end of the second torsion spring (19) is fixedly connected to the mounting plate (11).

4. The hydraulic pliers for electric power maintenance according to claim 3, characterized in that: Slide grooves are provided on both side surfaces of the pliers head (3), and a bending block (8) is slidably connected in each of the slide grooves. The two bending blocks (8) are connected by a fixed block (24), and the cross-section of the fixed block (24) is arranged in a concave shape. An opening for the vertical movement of the fixed block (24) is provided on the protective shell (1). A rotating piece (26) is fixedly connected to the fixed ring (20), and the lower surface of the rotating piece (26) is in contact with the surface of the fixed block (24). A second spring (10) is fixedly connected in each of the slide grooves, and one end of the second spring (10) is fixedly connected to the bending block (8).

5. The hydraulic pliers for electric power maintenance according to claim 4, characterized in that: Each of the bending blocks (8) is slidably connected to two sliding rods (5), each of the sliding rods (5) is sleeved with a third spring (18), one end of the third spring (18) is fixedly connected to the sliding rod (5), and the other end of the third spring (18) is fixedly connected to the bending block (8), one end of the sliding rod (5) is fixedly connected to a clamping plate (6), and a rubber block is fixedly connected to the surface of the clamping plate (6).

6. The hydraulic pliers for electric power maintenance according to claim 5, characterized in that: Two limit blocks (4) are fixedly connected to both side surfaces of the pliers head (3), each of the limit blocks (4) is provided with a limit slot, the cross section of the limit slot is arranged in a right-angle trapezoidal shape, and one end of each slide rod (5) away from the clamp plate (6) abuts against the inclined surface of the corresponding limit slot.

7. The hydraulic pliers for electric power maintenance according to claim 1, characterized in that: A plurality of suction cups (2) are slidably connected to the lower surface of the protective shell (1), and the plurality of suction cups (2) are evenly arranged at equal distances.

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