Electric fastening tool for coaxial cable joint

Abstract

The invention discloses a coaxial cable connector electric fastening tool which comprises an electric screwdriver, a fastening sleeve assembly is coaxially and fixedly installed at the front end of the electric screwdriver, a bearing seat is arranged at the front end of the fastening sleeve assembly, a driving shaft is rotationally arranged in the bearing seat through a bearing, and the rear end of the driving shaft is inserted into a torque transmission plug of the electric screwdriver. A supporting positioning plate assembly is arranged at the bottom of the electric screwdriver, a supporting wheel assembly is arranged at the front end of the supporting positioning clamping assembly, and a driving wheel located in the middle of the upper portion of the supporting positioning clamping assembly is connected to the front end of the driving shaft. The coaxial cable connector is novel in design, simple in structure, easy to improve and add, especially suitable for operation in a narrow space, and convenient for workers to mount and dismount the connector, so that the coaxial cable is screwed more tightly, the mounting reliability is ensured, the working efficiency is greatly improved, and the failure rate of equipment is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of power system equipment installation and maintenance operations, and in particular relates to an electric fastening tool for a coaxial cable connector. Background Art

[0002] Transmission lines are channels for the transmission and distribution of electric energy in power systems. Whether the line protection configured on them can operate reliably is directly related to the safety and reliability of the power grid. Through the analysis of many line protection defects that have occurred in recent years, loose coaxial cable connection defects in digital distribution frames in communication rooms account for about 20% of line protection defects, which is a common defect.

[0003] Coaxial cable is an important device for realizing photoelectric conversion of relay protection signals and optical fiber multiplexing in power systems. The quality of its joint connection directly affects the stability and reliability of protection signal transmission. After communicating with maintenance personnel and conducting on-site inspections, it was found that the wiring terminals on the chassis of the digital patch panel are closely arranged, the space is small, the fingers of operators are not easy to exert force, and the lack of special clamping and tightening tools makes it impossible to completely tighten the joints. These are the direct reasons why the coaxial cable joints often loosen. Summary of the invention

[0004] The invention provides an electric fastening tool for a wiring coaxial cable joint, which has the advantages of simple structure, convenient operation and reliable joint fastening without loosening.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a coaxial cable connector electric fastening tool, including an electric screwdriver, a fastening sleeve assembly is coaxially fixedly installed at the front end of the electric screwdriver, a bearing seat is provided at the front end of the fastening sleeve assembly, a drive shaft is provided in the bearing seat through the bearing, the rear end of the drive shaft is inserted into the torque transmission plug of the electric screwdriver, a supporting positioning plate assembly is provided at the bottom of the electric screwdriver, a supporting wheel assembly is provided at the front end of the supporting positioning clamping assembly, and the front end of the drive shaft is connected to a driving wheel located in the middle position above the supporting positioning clamping assembly.

[0006] The fastening sleeve assembly includes a connecting sleeve and a fastening sleeve. The rear part of the connecting sleeve is provided with a plurality of shrinkage grooves along the axial direction. The fastening sleeve is coaxially installed at the rear part of the connecting sleeve and the rear part of the connecting sleeve is wrapped and fixed to the outer circle of the front end of the electric screwdriver through a plurality of top screws. An annular plate is integrally provided at the front end of the connecting sleeve.

[0007] The rear end of the bearing seat is integrally provided with a flange that fits the annular plate. The flange and the annular plate are connected as a whole by a plurality of fastening bolts. Two bearings are provided, and the two bearings are respectively assembled on the front inner circle and the rear inner circle of the bearing seat.

[0008] The supporting positioning clamping assembly includes a splint and a clamp. The clamp is fixedly connected to the outer circle of the rear end of the electric screwdriver by a connecting bolt. The connecting bolt is located below the electric screwdriver. The upper part of the rear end of the splint is hinged to the connecting bolt through a hinge seat. The front end of the splint is connected to a U-shaped positioning seat with an open upper end by screws. The left and right sides of the inner wall of the U-shaped positioning seat are in contact and cooperate with the left and right sides of the outer circle of the bearing seat.

[0009] The support wheel assembly includes two support rods that are symmetrical about the center line of the drive shaft. The rear end of the support rod is fixedly connected to the bottom of the front end of the U-shaped positioning seat. The front end of the support rod is rotatably connected to a clamping wheel. The center line of the two clamping wheels and a drive wheel forms an isosceles triangle.

[0010] The central axis of the driving wheel is coaxially threadedly connected to a threaded hole opened at the front end of the driving shaft, and the driving wheel is made of PU material.

[0011] A hand guard pad is provided at the bottom of the front side of the splint.

[0012] A transparent sleeve is arranged inside the connecting sleeve and is installed outside the torque transmission plug at the front end of the electric screwdriver.

[0013] By adopting the above technical solution, when the present invention is used at work, the operator holds the electric screwdriver housing with one hand, first opens the clamp plate, expands the distance between the two clamp wheels and the driving wheel, places the straight-through connector (the wire and the connector body are in a line) or the L-shaped connector (the wire and the connector body are perpendicular) between the two support rods, and the rotating part of the connector body contacts the two clamp wheels, then closes the front of the clamp plate, moves the U-shaped positioning seat upward to the outside of the bearing seat, and the rotating part of the connector body contacts the driving wheel, and then aligns the front port of the connector body with the fixed head of the coaxial cable on the chassis of the digital distribution frame, starts the electric screwdriver, and the driving shaft drives the driving wheel to rotate, and the driving wheel drives the connector body to rotate and screw it onto the fixed head. When the connector body needs to be unscrewed, the electric screwdriver can be reversed.

[0014] The beneficial effects of the present invention are as follows: 1) By using an electric screwdriver as the tool body, adding a fastening sleeve assembly, a bearing seat, a support positioning clamping group, a drive shaft, a drive wheel and a support wheel assembly, the coaxial cable connector can be installed and removed in a small space, with a simple structure and easy operation.

[0015] 2) Use the bolts on the fastening sleeve to connect the top screws and press the part with the shrinkage groove on the rear side of the connecting sleeve to tighten it onto the electric screwdriver, providing a connection positioning and installation fixing seat for the bearing seat. The setting of the bearing seat provides a center positioning for the rotation of the drive shaft.

[0016] 3) The clamp is rotatably connected to the connecting bolt at the bottom of the clamp at the rear end of the electric screwdriver through a hinge seat, which makes it convenient to open and close the front end of the clamp, place the joint on the two support rods, and clamp the joint with a certain force through the two clamping wheels while the operator holds the electric screwdriver.

[0017] 4) The fit between the U-shaped locating seat and the outer circle of the bearing seat makes the splint more stable when clamping the joint.

[0018] 5) The driving wheel is made of PU material, which not only has a certain elasticity, but also has good friction with the outer circle of the joint when rotating, reducing slippage when tightening the joint.

[0019] 6) The hand guard pad increases the comfort of the operator when holding the splint.

[0020] 7) Currently, there are many electric screwdrivers on the market that have a light-emitting function at the front end of the torque transmission head when rotating. A transparent cover is set, and the light emitted by the torque transmission head when rotating can be observed through the shrinkage groove to see whether it is forward or reverse (the light transmittance of forward and reverse rotation is different), which is convenient for staff to identify.

[0021] In summary, the present invention has a novel design, a simple structure, and is easy to improve and add. It is particularly suitable for operation in a narrow space, and is convenient for workers to install and remove the connector, so that the coaxial cable can be tightened, ensuring the reliability of the installation, greatly improving work efficiency, and reducing the failure rate of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the support positioning clamping assembly of the present invention in an open state; Figure 2 It is a three-dimensional structural schematic diagram of the supporting positioning clamping assembly of the present invention in a closed clamping joint state; Figure 3 It is a schematic diagram of the planar structure of the support positioning clamping assembly of the present invention in an open state; Figure 4 It is a partial cross-sectional structural schematic diagram of the present invention; Figure 5 yes Figure 4 Front view of Figure 6 It is a schematic diagram of the disassembly of the fastening sleeve and the connecting sleeve. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and examples.

[0024] like Figure 1-Figure 6As shown, the electric fastening tool for a coaxial cable connector of the present invention comprises an electric screwdriver 1, a fastening sleeve assembly is coaxially fixedly installed at the front end of the electric screwdriver 1, a bearing seat 2 is provided at the front end of the fastening sleeve assembly, a driving shaft 4 is rotatably provided in the bearing seat 2 through a bearing 3, the rear end of the driving shaft 4 is inserted into a torque transmission plug 5 of the electric screwdriver 1, a supporting positioning plate assembly is provided at the bottom of the electric screwdriver 1, a supporting wheel assembly is provided at the front end of the supporting positioning clamping assembly, and the front end of the driving shaft 4 is connected to a driving wheel 6 located in the middle position above the supporting positioning clamping assembly.

[0025] The fastening sleeve assembly includes a connecting sleeve 7 and a fastening sleeve 8. A plurality of shrinkage grooves 9 are provided at the rear of the connecting sleeve 7 along the axial direction. The fastening sleeve 8 is coaxially installed at the rear of the connecting sleeve 7 and the rear of the connecting sleeve 7 is wrapped and fixed to the outer circle of the front end of the electric screwdriver 1 through a plurality of top screws 25. An annular plate 10 is integrally provided at the front end of the connecting sleeve 7.

[0026] The rear end of the bearing seat 2 is integrally provided with a flange 11 that fits the annular plate 10. The flange 11 and the annular plate 10 are connected as a whole by a plurality of fastening bolts 12. Two bearings 3 are provided, and the two bearings 3 are respectively assembled on the front inner circle and the rear inner circle of the bearing seat 2.

[0027] The supporting positioning clamping assembly includes a clamping plate 13 and a clamping hoop 14. The clamping hoop 14 is fixedly connected to the outer circle of the rear end of the electric screwdriver 1 through a connecting bolt 15. The connecting bolt 15 is located below the electric screwdriver 1. The upper part of the rear end of the clamping plate 13 is hinged to the connecting bolt 15 through a hinge seat 16. The front end of the clamping plate 13 is connected to a U-shaped positioning seat 18 with an open upper end through a screw 17. The left and right sides of the inner wall of the U-shaped positioning seat 18 are in contact with the left and right sides of the outer circle of the bearing seat 2.

[0028] The support wheel assembly includes two support rods 19 that are symmetrical about the center line of the drive shaft 4. The rear end of the support rod 19 is fixedly connected to the bottom of the front end of the U-shaped positioning seat 18. The front end of the support rod 19 is rotatably connected to a clamping wheel 20. The center line connecting the two clamping wheels 20 and a drive wheel 6 forms an isosceles triangle.

[0029] The central axis of the driving wheel 6 is coaxially threadedly connected to a threaded hole provided at the front end of the driving shaft 4 , and the driving wheel 6 is made of PU material.

[0030] A hand guard pad 21 is provided at the bottom of the front side of the clamping plate 13. A transparent sleeve 22 is provided inside the connecting sleeve 7 and is installed outside the torque transmission plug 5 at the front end of the electric screwdriver 1.

[0031] When the present invention is used, the clamping plate 13 is first opened to expand the distance between the two clamping wheels 20 and the driving wheel 6, and the straight-through connector 23 (the wire and the connector body are in a line) or the L-shaped connector 24 (the wire and the connector body are perpendicular) is placed between the two support rods 19, and the rotating part of the connector body contacts the two clamping wheels 20, and then the front part of the clamping plate 13 is closed, and the U-shaped positioning seat 18 moves upward to the outside of the bearing seat 2, and the rotating part of the connector body contacts the driving wheel 6, and then the front port of the connector body is aligned with the fixed head of the coaxial cable on the chassis, and the electric screwdriver 1 is started, and the driving shaft 4 drives the driving wheel 6 to rotate, and the driving wheel 6 drives the connector body to rotate and screw it onto the fixed head. When the connector body needs to be unscrewed, the electric screwdriver 1 can be reversed.

[0032] The above embodiments illustrate the basic principles and features of the present invention, but the above only illustrates the preferred embodiments of the present invention and is not limited to the embodiments. Under the inspiration of this patent, a person skilled in the art can make many forms of deformation and improvement without departing from the scope of protection of the present invention and the claims, which are all within the protection scope of the present invention. Therefore, the patent and protection scope of the present invention shall be subject to the attached claims.

Claims

1. An electric fastening tool for a coaxial cable connector, including an electric screwdriver, characterized in that: A fastening sleeve assembly is coaxially fixedly installed at the front end of the electric screwdriver, a bearing seat is provided at the front end of the fastening sleeve assembly, a driving shaft is provided in the bearing seat through the rotation of the bearing, the rear end of the driving shaft is inserted into the torque transmission plug of the electric screwdriver, a supporting positioning plate assembly is provided at the bottom of the electric screwdriver, a supporting wheel assembly is provided at the front end of the supporting positioning clamping assembly, and the front end of the driving shaft is connected to a driving wheel located in the middle position above the supporting positioning clamping assembly.

2. The coaxial cable connector electric fastening tool according to claim 1, characterized in that: The fastening sleeve assembly includes a connecting sleeve and a fastening sleeve. The rear part of the connecting sleeve is provided with a plurality of shrinkage grooves along the axial direction. The fastening sleeve is coaxially installed at the rear part of the connecting sleeve and the rear part of the connecting sleeve is wrapped and fixed to the outer circle of the front end of the electric screwdriver through a plurality of top screws. An annular plate is integrally provided at the front end of the connecting sleeve.

3. The electric fastening tool for coaxial cable connector according to claim 2, characterized in that: The rear end of the bearing seat is integrally provided with a flange that fits the annular plate. The flange and the annular plate are connected as a whole by a plurality of fastening bolts. Two bearings are provided, and the two bearings are respectively assembled on the front inner circle and the rear inner circle of the bearing seat.

4. The electric fastening tool for coaxial cable connector according to claim 3, characterized in that: The supporting positioning clamping assembly includes a splint and a clamp. The clamp is fixedly connected to the outer circle of the rear end of the electric screwdriver by a connecting bolt. The connecting bolt is located below the electric screwdriver. The upper part of the rear end of the splint is hinged to the connecting bolt through a hinge seat. The front end of the splint is connected to a U-shaped positioning seat with an open upper end by screws. The left and right sides of the inner wall of the U-shaped positioning seat are in contact and cooperate with the left and right sides of the outer circle of the bearing seat.

5. The electric fastening tool for coaxial cable connector according to claim 4, characterized in that: The support wheel assembly includes two support rods that are symmetrical about the center line of the drive shaft. The rear end of the support rod is fixedly connected to the bottom of the front end of the U-shaped positioning seat. The front end of the support rod is rotatably connected to a clamping wheel. The center line of the two clamping wheels and a drive wheel forms an isosceles triangle.

6. The coaxial cable connector electric fastening tool according to claim 1, characterized in that: The central axis of the driving wheel is coaxially threadedly connected to a threaded hole opened at the front end of the driving shaft, and the driving wheel is made of PU material.

7. The electric fastening tool for coaxial cable connector according to claim 4, characterized in that: A hand guard pad is provided at the bottom of the front side of the splint.

8. The electric fastening tool for coaxial cable connectors according to claim 4, characterized in that: A transparent sleeve is arranged inside the connecting sleeve and is installed outside the torque transmission plug at the front end of the electric screwdriver.

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