A clamp for lead wire connection fittings and an operating method thereof

Abstract

The present invention discloses a clamp for lead-wire connection hardware and an operation method thereof. The clamp comprises: a clamping assembly, a tool fixing frame and a rotating shaft; one end of the rotating shaft penetrates the tool fixing frame and is movably connected to the wire clamp bolt of the lead-wire connection hardware; the other end of the rotating shaft is connected to a mechanical arm; the clamping assembly is arranged on the tool fixing frame and is used to clamp the lead-wire connection hardware to fix it on the tool fixing frame; the mechanical arm rotates the rotating shaft to drive the wire clamp bolt to rotate, so as to fix the lead-wire connection hardware to the lead. The present invention realizes that when performing live operation on distribution lines, the mechanical arm of a live robot is used to install the lead-wire connection hardware in combination with the clamp, so as to realize the purpose of live connection between the lead-wire connection hardware and the lead. The existence of the clamp ensures the safety of the staff and the overhead line when the mechanical arm of the robot performs live connection work, so that the overhead line can operate safely for a long time.

Description

Technical Field

[0001] The invention relates to the field of live working tools, and in particular to a clamp for lead connection hardware and an operating method. Background Art

[0002] In recent years, in order to cooperate with a series of measures such as increasing the intensity of power grid transformation, optimizing the business environment, and improving the management of distribution network non-stop operations, non-stop operations have become an important part of the distribution network maintenance system. The application of intelligent robots in non-stop operations is a topic that resonates with the current power system. At present, the research and development of non-stop operation robots has entered the product pilot stage, but for a long time, the connection hardware used for lines has been developed and produced around the mode of manual splicing, which has problems such as low work efficiency, low safety performance and poor reliability. In addition, practice has proved that robots use existing operating tools to perform lead splicing, which cannot achieve the purpose of live splicing during the connection process of lead connection hardware and leads, as well as long-term safe operation of overhead lines. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a clamp and an operation method for lead connection hardware in view of the deficiencies of the above-mentioned prior art, so as to solve the problems of low working efficiency, low safety performance and poor reliability.

[0004] In order to solve the above problems, the present invention is implemented by the following technical solutions:

[0005] A clamp for a lead connection fitting, comprising: a clamping assembly, a tool fixing frame 103 and a rotating shaft; one end of the rotating shaft passes through the tool fixing frame 103 and is movably connected to a wire clamp bolt of the lead connection fitting; the other end of the rotating shaft is connected to a robotic arm; the clamping assembly is arranged on the tool fixing frame 103, and is used to clamp the lead connection fitting to fix it on the tool fixing frame 103; the robotic arm rotates the rotating shaft to drive the wire clamp bolt to rotate, so as to fix the lead connection fitting to the lead.

[0006] Preferably, the clamping assembly includes: a first clamping plate 101, a second clamping plate 108 and a third clamping plate 111; the first clamping plate 101 is fixed to the side wall of the tool fixing frame 103; the second clamping plate 108 includes a first horizontal section and a first vertical section connected to the first horizontal section at an angle; the first vertical section is fixed to the side wall of the tool fixing frame 103 and is arranged opposite to the first clamping plate 101; the third clamping plate 111 is rotatably connected to the top of the first vertical section; the third clamping plate 111 is rotated to clamp the upper notch of the lead connecting hardware.

[0007] Preferably, the clamping assembly also includes: a spring 109, a ring screw 107 and a rotating shaft 110; the third clamping plate 111 includes a second horizontal section and a second vertical section connected to the second horizontal section at an angle; the rotating shaft 110 passes through the connection between the second horizontal section and the second vertical section and is connected to the top of the first vertical section; one end of the ring screw 107 passes through the first horizontal section and abuts against the second horizontal section; one end of the spring 109 is connected to the first horizontal section, and the other end thereof is connected to the second horizontal section; rotating the ring screw 107 drives the third clamping plate 111 to rotate, and the distance between the second vertical section and the first clamping plate 101 is reduced, so as to clamp the lead connection hardware located between the second vertical section and the first clamping plate 101.

[0008] Preferably, the clamping assembly further comprises: a positioning clamp 112, which is rotatably connected to the top of the second vertical section to feed the lead into the clamp of the lead connection fitting;

[0009] Preferably, the positioning card 112 includes: a hook, a spring, a fixed shaft and a nut; the top of the second vertical section is provided with a step extending toward the first clamping plate, and a fixing portion arranged perpendicular to the step surface, and a through hole is provided on the fixing portion; the hook is provided with a fixing section and a bending section connected to the fixing section; the spring is sleeved on the fixing shaft, one end of the fixing shaft is connected to a side wall of the fixing section of the hook, and the other end of the fixing shaft passes through the through hole and is connected to the nut; the hook is mounted on the step, and the other side wall of the fixing section of the hook abuts against the side of the movable end of the wire clamp of the lead connecting fitting; the bending section of the hook is arranged at an acute angle to the extension direction of the hook of the movable end, so as to guide the lead into the movable end of the wire clamp of the lead connecting fitting.

[0010] Preferably, the rotating shaft includes: a sleeve 102 and a square rod 106; one end of the sleeve 102 is movably connected to the wire clamp bolt; the other end is sleeved on one end of the square rod 106; the other end of the square rod 106 is connected to the robotic arm; a marble is arranged on the outer wall of one end of the square rod 106 and abuts against the inner wall of the sleeve 102.

[0011] Preferably, it also includes: a bearing 105 and a bearing cover 104; the bearing 105 is fixed in the tool fixing frame 103 and is located below the sleeve 102, and the square rod 106 passes through the bearing 105; the bearing cover 104 is sleeved on the bearing 105 to fix the bearing 105.

[0012] On the other hand, the present invention also provides an operating method for a clamp of a lead connection hardware, comprising: pressing the hook of the positioning clamp into the groove at the upper end of the second vertical section of the third clamp; placing the lead connection hardware on a tool fixing frame, with the top of its wire clamp bolt clamped into the sleeve of the rotating shaft; rotating the ring screw to reduce the distance between the second vertical section of the third clamp and the first clamp to clamp the upper notch of the lead connection hardware; the positioning clamp sends the lead into the wire clamp of the lead connection hardware; rotating the rotating shaft by a robotic arm to drive the wire clamp bolt to rotate, and the hook pops out; the hook of the robotic arm hooks the ring screw and rotates the ring screw, so that the distance between the second vertical section of the third clamp and the first clamp increases, the lead connection hardware is released, and the clamp is removed.

[0013] The present invention has at least one of the following advantages:

[0014] The clamp provided by the present invention enables a live working robot to use the clamp to autonomously perform live wire splicing, thereby solving the problems of the live working robot not matching with the existing clamp and the complicated operation steps and loose connections when splicing live wires.

[0015] The clamp provided by the present invention has simple selection and structural design and is highly universal and operable.

[0016] The clamp provided by the present invention has the function of overlapping lead connection hardware. The clamp has a bayonet mode for combining with and disengaging from the robot arm, that is, the robot arm is designed with a connection port according to the clamp, and a pin is provided at the bottom of the rotating shaft, which can be inserted into the groove of the robot arm. The clamp can be fixed and detached by tightening and loosening the robot arm.

[0017] The clamp provided by the present invention can improve the working efficiency of existing robots, liberate productivity, and improve the safety and reliability of non-power-off operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A front cross-sectional view of a clamp suitable for lead connection fittings provided in one embodiment of the present invention;

[0019] Figure 2 A left side view of a clamp suitable for lead connection fittings provided in one embodiment of the present invention;

[0020] Figure 3 A three-dimensional diagram of a clamp suitable for lead connection fittings provided in accordance with an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The following is combined with Figures 1 to 3The present invention further describes in detail a clamp and an operating method of a lead connection fitting proposed in the present invention with a specific implementation method. According to the following description, the advantages and features of the present invention will become clearer. It should be noted that the drawings are in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the drawings. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any modification of the structure, change in the proportional relationship or adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed in the present invention.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0023] In the description of the present invention, it should be understood that the terms "center", "height", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] Combination Figures 1 to 3 As shown, a clamp for a lead connection fitting provided in this embodiment includes: a clamping assembly, a tool fixing frame 103 and a rotating shaft; one end of the rotating shaft passes through the tool fixing frame 103 and is movably connected to the wire clamp bolt of the lead connection fitting; the other end of the rotating shaft is connected to a robotic arm; the clamping assembly is arranged on the tool fixing frame 103, and is used to clamp the lead connection fitting to fix it on the tool fixing frame 103; the robotic arm rotates the rotating shaft to drive the wire clamp bolt to rotate, so as to fix the lead connection fitting to the lead.

[0027] This embodiment includes but is not limited to the horizontal position of the upper end of the tool fixing frame 103 being higher than the upper end of the rotating shaft, and can be relatively parallel or lower than the upper end of the rotating shaft. When it is higher than the upper end of the rotating shaft, the interior of the tool fixing frame 103 is just suitable for the lower part of the lead connection hardware to be fixed thereon, and when the upper notch of the lead connection hardware is fixed at this time, the fixing effect of the lead connection hardware relative to the clamp is the best; when the upper end of the tool fixing frame 103 is parallel to or lower than the upper end of the rotating shaft, only the upper notch of the lead connection hardware is fixed, and the operation can also be completed, but the fixing effect is slightly worse.

[0028] Specifically, the clamping assembly includes: a first clamping plate 101, a second clamping plate 108 and a third clamping plate 111; the first clamping plate 101 is fixed to the side wall of the tool fixing frame 103; the second clamping plate 108 includes a first horizontal section and a first vertical section connected to the first horizontal section at an angle; the first vertical section is fixed to the side wall of the tool fixing frame 103 and is arranged opposite to the first clamping plate 101; the third clamping plate 111 is rotatably connected to the top of the first vertical section; the third clamping plate 111 is rotated to clamp the upper notch of the lead connecting hardware.

[0029] Specifically, the clamping assembly also includes: a spring 109, a ring screw 107 and a rotating shaft 110; the third clamp 111 includes a second horizontal section and a second vertical section connected to the second horizontal section at an angle; the rotating shaft 110 passes through the connection between the second horizontal section and the second vertical section and is connected to the top of the first vertical section; one end of the ring screw 107 passes through the first horizontal section and abuts against the second horizontal section; one end of the spring 109 is connected to the first horizontal section, and the other end thereof is connected to the second horizontal section; rotating the ring screw 107 drives the third clamp 111 to rotate, and the distance between the second vertical section and the first clamp 101 is reduced, so as to clamp the lead connection hardware located between the second vertical section and the first clamp 101.

[0030] This embodiment includes but is not limited to the first clamping plate 101 being fixed on the side wall of the tool fixing frame 103. Any component that can fix the upper notch of the lead connection fitting on the clamp can replace the first clamping plate 101. The second clamping plate 108 and the third clamping plate 111 are L-shaped clamping plates. The top of the first vertical section and the connection between the second horizontal section and the second vertical section are provided with circular holes of the same size. The top of the first vertical section is sleeved on the outside of the connection between the second horizontal section and the second vertical section. The rotating shaft passes through all the circular holes to connect the second clamping plate 108 and the third clamping plate 111. The third clamping plate 111 rotates around the rotating shaft. The first horizontal section of the second clamping plate 108 is provided with a circular hole, and the circular hole is provided with a thread. The ring screw 107 rotates through the thread, passes through the circular hole of the first horizontal section, and one end abuts against the second horizontal section of the third clamping plate 111, so that the third clamping plate 111 rotates. Since the third clamping plate 111 would be unstable if only subjected to the force of the ring screw 107 , the tension of the spring 109 is provided to make the third clamping plate 111 relatively stable in any position.

[0031] Specifically, the clamping assembly further includes: a positioning clamp 112, which is rotatably connected to the top of the second vertical section and is used to feed the lead into the clamp of the lead connection hardware.

[0032] Specifically, the positioning card 112 includes: a hook, a spring, a fixed shaft and a nut; the top of the second vertical section is provided with a step extending toward the first clamping plate, and a fixing portion arranged perpendicular to the step surface, and a through hole is provided on the fixing portion; the hook is provided with a fixing section and a bending section connected to the fixing section; the spring is sleeved on the fixing shaft, one end of the fixing shaft is connected to a side wall of the fixing section of the hook, and the other end of the fixing shaft passes through the through hole and is connected to the nut; the hook is mounted on the step, and the other side wall of the fixing section of the hook abuts against the side of the movable end of the wire clamp of the lead connecting fitting; the bending section of the hook is arranged at an acute angle to the extension direction of the hook of the movable end, so as to guide the lead into the movable end of the wire clamp of the lead connecting fitting.

[0033] During operation, manually press the hook piece, put the lead connection fitting into the clamp, and fix the lead connection fitting. The wire follows the bent section of the hook piece to the arc where the long bent section connects with the fixed section, and at this time, it just enters the hook of the active end of the wire clamp of the lead connection fitting. Rotate the wire clamp bolt so that the wire clamp fixes the lead; when the active end of the lead connection fitting is separated from the hook piece, the hook piece is ejected by the spring; when the clamp releases the lead connection fitting, as the clamp moves down, the hook piece touches the lead, and the bent section of the hook piece is driven by the lead to rotate upward, and the clamp is removed smoothly.

[0034] Specifically, the rotating shaft includes: a sleeve 102 and a square rod 106; one end of the sleeve 102 is movably connected to the wire clamp bolt; the other end is sleeved on one end of the square rod 106; the other end of the square rod 106 is connected to the robotic arm; a marble is arranged on the outer wall of one end of the square rod 106, and abuts against the inner wall of the sleeve 102.

[0035] The shape of the sleeve is just suitable for the upper part of the square rod to be inserted, and a groove is set on the inner side wall of the sleeve. When the square rod is inserted, the marble on the upper side wall just fits into the groove, so that the sleeve and the square rod are relatively fixed and the square rod will not slip out of the sleeve. If the sleeve and the square rod need to be separated, an external force is used to make the marble bounce into the inside of the square rod to pull the square rod out of the sleeve.

[0036] Specifically, it also includes: a bearing 105 and a bearing cover 104; the bearing 105 is fixed in the tool fixing frame 103 and is located below the sleeve 102, and the square rod 106 passes through the bearing 105; the bearing cover 104 is sleeved on the bearing 105 to fix the bearing 105.

[0037] The bearing consists of two inner and outer circular rings and steel balls. The inner ring is welded to the square rod, and the outer ring is connected to the bottom of the tool holder 103 and is just stuck at its bottom. When the rotating shaft rotates, the inner ring rotates, driving the steel balls to move, thereby reducing the friction generated during rotation and the wear of the tool. The bearing cover just covers the upper part of the bearing, so that the bearing will not fall off the holder no matter what state the holder is in.

[0038] Based on the same inventive concept, the present invention also provides an operating method for a clamp of a lead connection hardware, including: pressing the hook of the positioning clamp into the slot at the upper end of the second vertical section of the third clamp; placing the lead connection hardware on a tool fixing frame, with the top of its wire clamp bolt clamped into the sleeve of the rotating shaft; rotating the ring screw to reduce the distance between the second vertical section of the third clamp and the first clamp to clamp the upper notch of the lead connection hardware; the positioning clamp sends the lead into the wire clamp of the lead connection hardware; rotating the rotating shaft by a robotic arm to drive the wire clamp bolt to rotate, and the hook pops out; the hook of the robotic arm hooks the ring screw to rotate the ring screw, so that the distance between the second vertical section of the third clamp and the first clamp increases, the lead connection hardware is released, and the clamp is removed.

[0039] In summary, this embodiment provides a clamp suitable for lead-wire connection fittings and an operating method. The clamp is a tool that can be matched with an existing robot arm. The clamp is mounted on the arm and can be regarded as a manipulator. It has the function of live-connecting leads through the transmission of the arm. As a work tool for live-working, it can be freely disassembled from the arm and is suitable for connection fittings of different specifications and sizes. Through the application of this embodiment and the connection fittings, the work efficiency and safety of live-connecting in distribution network maintenance are greatly improved, and the company's non-stop power supply operations are further improved in terms of intelligence and mechanization.

[0040] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A clamp for lead wire connection fittings, characterized in that: include: A clamping assembly, a tool holder (103) and a rotating shaft; One end of the rotating shaft passes through the tool fixing frame (103) and is movably connected to the wire clamp bolt of the lead wire connection hardware; the other end of the rotating shaft is connected to the mechanical arm; The clamping assembly is arranged on the tool fixing frame (103) and is used to clamp the lead connection fitting to fix it on the tool fixing frame (103); The mechanical arm rotates the rotating shaft to drive the wire clamp bolt to rotate, so as to fix the lead connection fitting to the lead; The clamping assembly comprises: a first clamping plate (101), a second clamping plate (108) and a third clamping plate (111); The first clamping plate (101) is fixed on the side wall of the tool fixing frame (103); The second clamping plate (108) comprises a first horizontal section and a first vertical section connected to the first horizontal section at an angle; The first vertical section is fixed on the side wall of the tool fixing frame (103) and is arranged opposite to the first clamping plate (101); The third clamping plate (111) is rotatably connected to the top of the first vertical section; the third clamping plate (111) is rotated to clamp the upper notch of the lead connection fitting; The rotating shaft comprises: a sleeve (102) and a square rod (106); One end of the sleeve (102) is movably connected to the wire clamp bolt; the other end of the sleeve (102) is sleeved on one end of the square rod (106); the other end of the square rod (106) is connected to the mechanical arm; The marble is arranged on the outer wall of one end of the square rod (106) and abuts against the inner wall of the sleeve (102).

2. The lead connection fitting holder according to claim 1, characterized in that: The clamping assembly further comprises: a spring (109), a ring screw (107) and a rotating shaft (110); The third clamping plate (111) comprises a second horizontal section and a second vertical section connected to the second horizontal section at an angle; The rotating shaft (110) passes through the connection between the second horizontal section and the second vertical section and is connected to the top of the first vertical section; One end of the ring screw (107) passes through the first horizontal section and abuts against the second horizontal section; One end of the spring (109) is connected to the first horizontal section, and the other end of the spring (109) is connected to the second horizontal section; The ring screw (107) is rotated to drive the third clamping plate (111) to rotate, and the distance between the second vertical section and the first clamping plate (101) is reduced, so as to clamp the lead connection hardware located between the second vertical section and the first clamping plate (101).

3. The lead wire connection fitting holder according to claim 2, characterized in that: The clamping assembly also includes a positioning clamp (112) which is rotatably connected to the top of the second vertical section so as to feed the lead wire into the clamping clamp of the lead wire connection fitting.

4. The lead connection fitting holder according to claim 3, characterized in that: The positioning clamp (112) comprises: a hook, a spring, a fixed shaft and a nut; The top of the second vertical section is provided with a step extending toward the first clamping plate, and a fixing portion vertically arranged with respect to the step surface of the step, and the fixing portion is provided with a through hole; The hook piece is provided with a fixed section and a bent section connected to the fixed section; The spring is sleeved on the fixed shaft, one end of the fixed shaft is connected to a side wall of the fixed section of the hook, and the other end of the fixed shaft passes through the through hole and is connected to the nut; The hook piece is mounted on the step, and the other side wall of the fixed section of the hook piece abuts against the side surface of the movable end of the wire clamp of the lead connection hardware; The bent section of the hook piece is arranged at an acute angle with the extending direction of the hook of the movable end, so as to guide the lead wire into the movable end of the wire clamp of the lead connection hardware.

5. The lead connection fitting holder according to claim 1, characterized in that: Also includes: A bearing (105) and a bearing cover (104); The bearing (105) is fixed in the tool fixing frame (103) and is located below the sleeve (102), and the square rod (106) passes through the bearing (105); The bearing cover (104) is sleeved on the bearing (105) to fix the bearing (105).

6. A method for operating a clamp of a lead connection fitting according to any one of claims 1 to 5, characterized in that: include: Press the hook of the positioning clamp into the clamping groove at the upper end of the second vertical section of the third clamping plate; Place the lead connection fitting on the tool holder, and insert the top of the wire clamp bolt into the sleeve of the rotating shaft; Rotate the ring screw to reduce the distance between the second vertical section of the third clamping plate and the first clamping plate, so as to clamp the upper notch of the lead connection fitting; The positioning clamp sends the lead wire into the wire clamp of the lead wire connection fitting; The mechanical arm rotates the rotating shaft to drive the wire clamp bolt to rotate, and the hook piece pops out; The hook of the mechanical arm hooks the ring screw and rotates the ring screw, so that the distance between the second vertical section of the third clamping plate and the first clamping plate increases, the lead connection hardware is loosened and the clamp is removed.

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