Multifunctional clamp for wire straightening and stripping

Abstract

The invention discloses a multifunctional clamp for wire straightening and stripping, and relates to the technical field of electric power tools. The clamp comprises a four-connecting-rod mechanism, the four-connecting-rod mechanism is composed of a first clamp arm and a second clamp arm which are hinged in a crossed mode, and parallel opening and closing are achieved through a kidney-shaped hole pin movable groove. And a shearing part, a wire stripping part, a clamping part and a straightening part are integrated on the four-bar mechanism. The shearing part adopts a hard alloy blade to be matched with the anti-pinch hole to shear the wire; the wire stripping part is provided with multi-aperture wire stripping holes which are adaptive to different wire diameters; the clamping part is used for fixing a wire through a U-shaped clamping arm with anti-skid grains; and the straightening part adopts staggered straightening wheels with different wheel rail widths to realize high-precision straightening. The device integrates multiple functions, is convenient to operate, solves the problems of low efficiency, wire damage and poor universality of a traditional tool, and is suitable for wiring operation of the secondary wire of the transformer substation.

Description

Technical Field

[0001] The invention relates to the technical field of electric power tools, in particular to a multifunctional pliers for straightening and stripping wires. Background Art

[0002] The secondary control lines of substations need to be straightened with high precision. According to industry standards, the curvature of the secondary control lines should be ≤0.5mm / m to ensure neat wiring. The straightened wires are easier to be neatly and standardizedly wired in cable troughs, wire ducts or terminal blocks. Neat wiring is not only beautiful, but more importantly, it is easy to identify, check, align and maintain in the future. The wires maintain good straightness, which helps to achieve more accurate and safe connection operations and ensure that the line layout is standardized and orderly.

[0003] Curved conductors, especially rigid ones, can damage the insulation if the bend radius is too small or there are sharp bends, posing a safety hazard. High-precision straightening tools typically ensure smooth straightening that meets the minimum bend radius requirements and protects the insulation. However, in actual wiring work, wires are generally straightened manually, or with power tools that change the stress on the wires. However, these methods are highly susceptible to wire damage, posing a risk to subsequent operation and maintenance.

[0004] Furthermore, many devices can only handle specific wire diameters or types, resulting in limited versatility. This reduces work efficiency and requires carrying and switching between different tools, increasing workload and operational complexity, especially in confined spaces or when frequent tool changes are required. Dispersed tools can lead to chaos on the construction site, increasing safety risks. Their bulk and weight make them difficult to carry, especially during field or mobile operations.

[0005] To this end, the present application designs a multifunctional pliers for straightening and stripping wires to solve the above problems. Summary of the Invention

[0006] In order to make up for the deficiencies in the prior art, the present invention provides a multifunctional pliers for straightening and stripping wires.

[0007] A multifunctional pliers for straightening and stripping wires, comprising a four-bar linkage, characterized in that: The four-bar linkage is used for parallel opening and closing. A shearing part, a wire stripping part, a holding part and a straightening part are provided on the four-bar linkage. The four-bar linkage that opens and closes in parallel drives the shearing part, the wire stripping part, the holding part and the straightening part to open and close.

[0008] Furthermore, in order to better realize the present invention, the four-bar linkage mechanism includes a first clamp arm and a second clamp arm in an X-shape that are cross-hinged together in the middle, and the front and rear surfaces of the left end of the first clamp arm slide in the pin movable groove in the shape of a waist-shaped hole at the left end of the first front clamping plate and the first rear clamping plate through pins, and the right end of the first front clamping plate and the first rear clamping plate is hinged to the front and rear of the right end of the second clamp arm through pins; the front and rear surfaces of the left end of the second clamp arm slide in the pin movable groove in the shape of a waist-shaped hole at the left end of the second front clamping plate and the second rear clamping plate through pins, and the right end of the second front clamping plate and the second rear clamping plate is hinged to the front and rear of the right end of the first clamp arm through pins.

[0009] Furthermore, in order to better implement the present invention, an insulating handle is provided on the leftmost side of the first clamp arm and the second clamp arm.

[0010] Furthermore, in order to better realize the present invention, the shearing portion includes a carbide blade arranged at the left end of the first front clamping plate and the second front clamping plate, and also includes a notch arranged on the left side of the first rear clamping plate and the second rear clamping plate corresponding to the position of the carbide blade, and the notches are merged to form an anti-pinch hole.

[0011] Furthermore, in order to better implement the present invention, the wire stripping portion includes a plurality of wire stripping holes with different apertures arranged at the leftmost ends of the first rear clamping plate and the second rear clamping plate.

[0012] Furthermore, in order to better realize the present invention, the supporting part includes two upper clamping arms and lower clamping arms with the same structure and U-shaped cross-section. The contact surfaces of the upper clamping arm and the lower clamping arm are provided with anti-slip grooves. The left end of the groove of the upper clamping arm is fixedly connected to the right end of the first front clamping plate and the first rear clamping plate, and the left end of the groove of the lower clamping arm is fixedly connected to the right end of the second front clamping plate and the second rear clamping plate. A support column is fixed between the right end of the first front clamping plate and the first rear clamping plate and the right end of the second front clamping plate and the second rear clamping plate.

[0013] Furthermore, in order to better implement the present invention, the straightening part includes a plurality of straightening wheels staggeredly connected to the front and rear sides of the upper clamping arm and the lower clamping arm, and the straightening wheels are divided into two groups, the front and rear, and the wheel track widths of the two groups are different.

[0014] The beneficial effects of the present invention are: 1. Multifunctional integration: Through the parallel opening and closing design of the four-bar linkage, the four functional parts of cutting, stripping, clamping and straightening are driven synchronously, so that a single tool can complete the operations of wire straightening, stripping, cutting and clamping, greatly improving work efficiency.

[0015] 2. High-precision straightening: The straightening unit uses two sets of straightening wheels with different wheel-track widths, which can adapt to conductors of different diameters and ensure that the curvature after straightening is ≤0.5mm / m, meeting the high standards required for secondary control lines in substations.

[0016] 3. Anti-damage design: The anti-clamping holes on the shearing part prevent accidental clamping of wires; the multi-diameter stripping holes on the stripping part adapt to different wire diameters and protect the insulation layer; the anti-slip grooves on the clamping part enhance the grip and prevent slipping and damage to the wire surface.

[0017] 4. Compact and reliable structure: The waist-round hole pin movable slot of the four-bar linkage ensures the stability of parallel opening and closing; the support column enhances the rigidity of the clamping part to prevent deformation; the carbide blade improves shearing durability.

[0018] 5. Portability and safety: The overall structure is lightweight and suitable for operations in confined spaces; the insulated handle provides electrical isolation protection and reduces operational risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the clamp of the present invention when it is closed; Figure 2 This is a front perspective structural diagram of the clamp of the present invention when it is opened; Figure 3 This is a rear perspective structural diagram of the clamp of the present invention when it is opened; Figure 4 This is a schematic top view of the stereoscopic structure of the clamp of the present invention when it is opened.

[0020] In the figure, 1. Four-bar linkage, 2. Shearing part, 3. Wire stripping part, 4. Clamping part, 5. Straightening part, 101. First clamping arm, 102. Second clamping arm, 103. First front clamping plate, 104. First rear clamping plate, 105. Second front clamping plate, 106. Second rear clamping plate, 107. Insulated handle, 108. Pin movable slot, 109. Pin, 110. Support column, 201. Carbide blade, 202. Anti-pinch hole, 301. Wire stripping hole, 401. Upper clamping arm, 402. Lower clamping arm, 403. Anti-slip groove, 501. Straightening wheel, 502. Wheel track. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in a variety of different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely intended to represent selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0023] Figure 1-Figure 4 This embodiment of the present invention is a multifunctional pliers for straightening and stripping wires. A four-bar linkage 1 is configured to open and close in parallel. The linkage 1 comprises a shearing section 2, a stripping section 3, a holding section 4, and a straightening section 5. The parallel opening and closing of the four-bar linkage 1 drives the shearing section 2, the stripping section 3, the holding section 4, and the straightening section 5. The four-bar linkage 1 comprises a first clamp arm 101 and a second clamp arm 102, which are hinged together in an X-shape. The front and rear ends of the left end of the first clamp arm 101 slide in a retractable pin slot 108 (a circular hole) in the left ends of the first front clamping plate 103 and the first rear clamping plate 104 via a pin 109. The right ends of the first front clamping plate 103 and the first rear clamping plate 104 are hingedly connected to the right end of the second clamp arm 102 via a pin 109. The front and rear ends of the left end of the second clamp arm 102 slide in a retractable pin slot 108 (a circular hole) in the left ends of the second front clamping plate 105 and the second rear clamping plate 106 via a pin 109. The right ends of the second front clamping plate 105 and the second rear clamping plate 106 are hingedly connected to the right end of the first clamp arm 101 via a pin 109. An insulated handle 107 is provided at the leftmost sides of the first and second clamp arms 101 and 102.

[0024] The functional part of this embodiment operates as follows: Shearing operation: When the clamp is closed, the carbide blades 201 at the left ends of the first front clamping plate 103 and the second front clamping plate 105 engage with each other to shear the wire. At the same time, the notches of the first / second rear clamping plates 104 / 106 merge to form an anti-pinch hole 202 to prevent the wire from being pinched.

[0025] Wire stripping operation: insert the wire end into the stripping hole 301 of the first rear clamping plate 104 and the left end of the second rear clamping plate 106 with matching apertures, close the clamp and rotate it to strip the insulation layer.

[0026] Clamping operation: The U-shaped upper / lower clamping arms 401 / 402 of the clamping portion 4 firmly clamp the wire through the anti-slip grooves 403, which is suitable for bending or fixing the wire.

[0027] Straightening operation: Place the wire between the straightening wheels 501. The front and rear wheel rails 502 are adapted to different wire diameters. After closing the clamp, pull the wire and stagger the wheel sets to eliminate bending stress.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not limiting. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A multifunctional pliers for straightening and stripping wires, comprising a four-bar linkage (1), characterized in that: The four-bar linkage (1) is used for parallel opening and closing. A shearing portion (2), a wire stripping portion (3), a holding portion (4) and a straightening portion (5) are provided on the four-bar linkage (1). The four-bar linkage (1) that opens and closes in parallel drives the shearing portion (2), the wire stripping portion (3), the holding portion (4) and the straightening portion (5) to open and close.

2. The multifunctional pliers for straightening and stripping wires according to claim 1, characterized in that: The four-bar linkage (1) comprises a first clamp arm (101) and a second clamp arm (102) which are cross-hinged in the middle and are in an X-shape. The front and rear surfaces of the left end of the first clamp arm (101) slide in the waist-shaped pin movable groove (108) at the left end of the first front clamping plate (103) and the first rear clamping plate (104) through a pin (109). The right ends of the first front clamping plate (103) and the first rear clamping plate (104) are connected by a pin. The pin (109) is hinged to the front and rear of the right end of the second clamp arm (102); the front and rear surfaces of the left end of the second clamp arm (102) slide in the waist-shaped pin movable groove (108) at the left end of the second front clamping plate (105) and the second rear clamping plate (106) through the pin (109), and the right end of the second front clamping plate (105) and the second rear clamping plate (106) is hinged to the front and rear of the right end of the first clamp arm (101) through the pin (109).

3. The multifunctional pliers for straightening and stripping wires according to claim 2, characterized in that: An insulating handle (107) is provided on the leftmost side of the first clamp arm (101) and the second clamp arm (102).

4. The multifunctional pliers for straightening and stripping wires according to claim 1, characterized in that: The shearing portion (2) includes a carbide blade (201) arranged at the left end of the first front clamping plate (103) and the second front clamping plate (105), and also includes a notch arranged at the left side of the first rear clamping plate (104) and the second rear clamping plate (106) corresponding to the position of the carbide blade (201), and the notches are combined to form an anti-clamping hole (202).

5. The multifunctional pliers for straightening and stripping wires according to claim 1, characterized in that: The wire stripping portion (3) comprises a plurality of wire stripping holes (301) with different apertures, which are arranged at the leftmost ends of the first rear clamping plate (104) and the second rear clamping plate (106).

6. The multifunctional pliers for straightening and stripping wires according to claim 1, characterized in that: The supporting portion (4) comprises an upper clamping arm (401) and a lower clamping arm (402) with two identical structures and U-shaped cross-sections. The contact surfaces of the upper clamping arm (401) and the lower clamping arm (402) are provided with anti-slip grooves (403). The left end of the groove of the upper clamping arm (401) is fixedly connected to the right end of the first front clamping plate (103) and the first rear clamping plate (104). The left end of the groove of the lower clamping arm (402) is fixedly connected to the right end of the second front clamping plate (105) and the second rear clamping plate (106). A support column (110) is fixed between the right ends of the first front clamping plate (103) and the first rear clamping plate (104) and the right ends of the second front clamping plate (105) and the second rear clamping plate (106).

7. The multifunctional pliers for straightening and stripping wires according to claim 1, characterized in that: The straightening portion (4) comprises a plurality of straightening wheels (501) staggeredly connected to the front and rear sides of the upper clamping arm (401) and the lower clamping arm (402). The straightening wheels (501) are divided into two groups, front and rear, and the wheel rails (502) of the two groups have different widths.

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