Double-tongue elastic sheet opening device for drainage wire and using method thereof

Abstract

According to the double-tongue elastic piece opening device for the drainage wire and the using method of the double-tongue elastic piece opening device, opening of a spring tongue piece is achieved by designing a device clamped into a groove in the head of a ground wire clamp, an operator can rapidly assemble and disassemble the ground wire, and the working efficiency and safety are effectively improved; a double-tongue elastic piece opening device for a drainage wire comprises a support, one end of the support is connected with a grounding wire clamp head of a grounding wire operating rod, the other end of the support is movably connected with a spring tongue piece opener, and a first control rod and a second control rod are arranged on the two sides of the spring tongue piece opener respectively. The tail portion of the first control rod and the tail portion of the second control rod are connected with movable plates, the number of the movable plates is two, the movable plates are arranged on the two sides of the first control rod and the two sides of the second control rod respectively, the second control rod is fixed between the two movable plates through bolts, the first control rod can move between the two movable plates, and the second control rod can move between the two movable plates. And the movable plate can move around a fixed point of the second control rod.

Description

Technical Field

[0001] The invention relates to the technical field of maintenance on-site operation tools, and in particular to a double-tongue spring piece opening device for a drainage line. Background Art

[0002] Power outage maintenance is an important measure to ensure the safe and stable operation of the power system and the safety of users' electricity use.

[0003] During the power outage maintenance process, power outage, power testing, installation of grounding wires, and hanging of signboards are the first four steps of power outage maintenance, and are also necessary measures to ensure the safety of maintenance personnel. The hanging and removal of grounding wires are key and necessary during power outage maintenance work. At present, there are two situations for hanging and removing grounding wires: the first is hanging and removing on the conductor of a straight pole tower; the second is hanging and removing on the drainage wire of a tension tower. When the grounding wire of a straight pole tower is hung and removed, because the conductor is in a tense state, the hanging point is easy to force the double-tongue spring operating head to be inserted or pushed away, which can be completed in one action. The drainage wire of the tension tower is suspended in an arc-shaped loose state. This special form and structure also brings difficulties to the hanging and removal of the grounding wire. When hanging, the drainage wire is subjected to vertical downward tension, and its shape and position will change. The insertion of the double-tongue spring operating head can firmly insert the grounding wire into the drainage wire through the elastic force of the spring, so that the hanging of the grounding wire can be completed in one operation. However, it is difficult to push the drainage wire upwards when it is bent and deformed during removal. Due to the close contact between the double-tongue spring operating head and the drainage wire, it is necessary to overcome a large friction force during removal. The operator may need to push and pull back and forth several times to gradually loosen the connection between the double-tongue spring operating head and the drainage wire. This process requires patience and carefulness to ensure that the drainage wire is not damaged or other safety hazards are caused while removing the grounding wire.

[0004] At present, there is no effective auxiliary device for the hooking and removal of the grounding wire of the tension tower drain wire, which can realize the opening operation of the double-tongue spring for the drain wire. The main reasons are as follows:

[0005] 1. The special shape and structure of the drainage line of the tension tower make it a technical challenge to design an auxiliary device that can adapt to its changes. How to ensure that the auxiliary device can exert force stably and accurately during the hanging and removal process and avoid damage to the drainage line is the key point that the current technology needs to break through.

[0006] 2. Cost and safety considerations: The development of a new auxiliary device requires consideration of its cost-effectiveness and safety. While ensuring the convenience of operation, it is also necessary to ensure that the cost of the device is within a reasonable range and meets the safety standards and specifications of the power system. Due to the professionalism and limitations of this field, sufficient work experience is required to design tools that meet the actual requirements of the site.

[0007] In summary, the special shape and structure of the tension tower drainage line bring challenges to the hanging and removal of the grounding wire during power outage maintenance work. The development of a grounding wire hanging and removal auxiliary device suitable for the tension tower drainage line has important practical significance and application value. Summary of the invention

[0008] The present invention aims to address the technical defects of the prior art and provide a double-tongue spring piece opening device for a drainage line and a method of using the same. By designing a device that is inserted into the groove of the grounding wire clamp head, the spring tongue piece can be opened, so that the operator can quickly install and remove the grounding wire, effectively improving the work efficiency and safety.

[0009] The present invention provides the following technical solution: a double-tongue spring opening device for a drainage line, comprising a bracket, one end of the bracket being connected to the grounding wire clamp head of a grounding wire operating rod, and the other end of the bracket being movably connected to a spring tongue opener, wherein a first control rod and a second control rod are respectively provided on both sides of the spring tongue opener, and the tails of the first control rod and the second control rod are connected with movable plates, and the number of the movable plates is set to 2, and the movable plates are respectively arranged on both sides of the first control rod and the second control rod, and the second control rod is fixed between the two movable plates by bolts, and the first control rod can move between the two movable plates, and the movable plate can move around the fixed point of the second control rod.

[0010] Preferably, the spring tongue opener is a needle-nosed pliers opener, and the head diameter of the needle-nosed pliers opener is less than 5 mm.

[0011] Preferably, a limiting ring is provided on the outer side of the needle-nosed pliers-type opener, and the limiting ring is welded to the bracket.

[0012] Preferably, the bracket is configured as an L-shaped bracket, the L-shaped bracket includes a supporting frame and a connecting frame, the supporting frame includes two clamping plates arranged in parallel, one end of the two clamping plates is welded with a connecting plate, the other ends of the two clamping plates are provided with through holes, the needle-nosed pliers-type opener is hinged between the through holes of the two clamping plates, and the inner sides of the two clamping plates are provided with arcs;

[0013] A threaded hole corresponding to the grounding wire clamp head of the grounding wire operating rod is provided at the bottom of the connecting frame, and the top of the connecting frame is welded to one end of the supporting frame close to the connecting plate.

[0014] Preferably, a hook is provided at the tail of the first control rod, a connecting screw is provided on the inner side of the hook between the two movable plates near the first control rod, and the hook of the first control rod is engaged with the connecting screw;

[0015] The second control rod is bolted to one end of the movable plate, the connecting screw is fixed to the middle of the movable plate, and the other end of the movable plate is connected by a screw.

[0016] Preferably, a bearing is provided on the connecting screw, and the hook of the first control rod is engaged with the bearing.

[0017] Preferably, the length of the first control rod is twice the length of the second control rod.

[0018] Preferably, a rope threading ring is welded to the outer side of the connecting frame.

[0019] Preferably, a plurality of through holes are provided on the upper portion of the connecting frame.

[0020] A method for using a double-tongue spring-piece opening device for a drainage line comprises the following steps:

[0021] (1) Assemble the device with the grounding wire operating rod and the grounding wire; bolt the bracket to the grounding wire clamp head of the grounding wire operating rod, and insert the head of the spring tongue opener into the groove of the grounding wire clamp head;

[0022] (2) Install the grounding wire; tie one end of the insulating rope to the screw of the movable plate, pull the insulating rope to link the spring tongue opener, open the grounding wire clamp, hang the grounding wire clamp on the conductor of the working line drainage line, loosen the insulating rope, and the spring tongue automatically clamps the conductor due to the elastic force to complete the installation of the grounding wire, and tie the excess insulating rope to the working tower to fix the tail of the grounding wire operating rod;

[0023] (3) After the work is completed, remove the grounding wire; pull the insulating rope to link the spring tongue opener to open the grounding wire clamp, remove the grounding wire clamp from the conductor, and untie the insulating rope fixed on the working tower to complete the removal of the grounding wire.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] In the above technical scheme, the double-tongue spring opening device for the drainage line comprises a bracket, one end of which is connected to the grounding wire clamp head of the grounding wire operating rod, and the other end of which is movably connected to the spring tongue opener, wherein a first control rod and a second control rod are respectively provided on both sides of the spring tongue opener, and the tails of the first control rod and the second control rod are connected with movable plates, the movable plates are provided in two numbers, and the movable plates are respectively provided on both sides of the first control rod and the second control rod, the second control rod is fixed between the two movable plates by bolts, the first control rod can move between the two movable plates, and the movable plate can move around the fixing point of the second control rod;

[0026] The present invention discloses a double-tongue spring piece opening device for a drainage line. The device is fixed and connected by arranging a bracket. On the one hand, the bracket realizes the connection of the grounding wire clamp head of the grounding wire operating rod, and on the other hand, it is used to fix the spring tongue piece opener, wherein two control rods are extended on both sides of the spring tongue piece opener, the second control rod is bolted to the movable plate to form a fixed point, the first control rod moves between the movable plates, and the movable plate moves around the fixed point to form the opening and closing of the spring tongue piece opener, thereby stretching the grounding wire clamp, making it easy to install or remove the grounding wire clamp from the conductor, and effectively improving the working efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic installation diagram of the closed state of the present invention;

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of the closed state of the present invention;

[0029] Figure 3 for Figure 1 Installation diagram from another angle;

[0030] Figure 4 A front view of the present invention in an open state;

[0031] Figure 5 It is a schematic installation diagram of the present invention in an open state;

[0032] Figure 6 A schematic diagram of the three-dimensional structure of the bracket.

[0033] Description of reference numerals:

[0034] A. Grounding wire operating rod;

[0035] 1. Spring tongue opener; 2. Bracket; 3. First control rod; 4. Second control rod; 5. Movable plate; 6. Screw rod; 7. Limiting ring; 8. Rope threading ring; 9. Threaded hole; 10. Through hole;

[0036] 201, support frame; 202, connecting frame; 203, through hole; 204, arc. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. All other embodiments obtained by ordinary technicians in the field without making creative work based on the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0038] like Figures 1 to 6 As shown, it shows a specific embodiment of the present invention: Figures 1 to 6As shown, the double-tongue spring opening device for the drainage line disclosed in the present invention is characterized in that it includes a bracket 2, one end of the bracket 2 is connected to the grounding wire clamp head of the grounding wire operating rod, and the other end of the bracket 2 is movably connected to a spring tongue opener 1, wherein a first control rod 3 and a second control rod 4 are respectively provided on both sides of the spring tongue opener 1, and the tails of the first control rod 3 and the second control rod 4 are connected with movable plates 5, and the movable plates 5 are set to 2, and the movable plates 5 are respectively arranged on both sides of the first control rod 3 and the second control rod 4, and the second control rod 4 is fixed between the two movable plates 5 by bolts, and the first control rod 3 can move between the two movable plates 5, and the movable plate 5 can move around the fixed point of the second control rod 4.

[0039] Preferably, Figures 1 to 5 As shown, the spring tongue opener 1 is a needle-nosed pliers opener, and the head diameter of the needle-nosed pliers opener is less than 5mm. If the spring tongue of the grounding wire clamp is to be opened, the opener needs to be able to be inserted into the two grooves of the grounding wire clamp head. The groove width is measured to be 5mm, so the spring tongue opener needs to be embedded in the groove of the grounding wire clamp head, and its head diameter is <5mm. After the test, the head diameter is selected to be 4mm for the best effect; and it does not deform under the force of 60N of the spring tongue. The spring tongue opener directly operates the spring tongue and its strength needs to be maintained without deformation under the condition of bearing 60N. After selecting and testing different shapes of the opener head, the following conclusions are drawn. The shapes are selected as vise type, needle-nosed pliers type, and scissors type, and their hardness can obviously meet the requirements of bearing 60N without deformation. However, the vise type is too heavy to be suitable for this device, and the head of the pliers end is too wide to be inserted into the groove. The scissors type meets the requirement of head diameter <5mm that can be inserted into the groove, but in the simulation test, it was found that the two sides of the scissors are too sharp to easily damage the grounding wire. The head of the needle-nosed pliers is smooth and the diameter is <5mm, so the needle-nosed pliers are finally chosen as the most preferred method.

[0040] Preferably, Figures 1 to 6As shown, a limit ring 7 is provided on the outer side of the needle-nosed pliers opener, and the limit ring 7 is welded on the bracket 2. One end of the φ6 insulating rope is tied to the movable plate, and the insulating rope is pulled to link the needle-nosed pliers opener to open the grounding wire clamp, and the grounding wire clamp is hung on the conductor of the working line drainage line. In the process of pulling the insulating rope to drive the needle-nosed pliers opener to open the grounding wire clamp, it is found that since the connection between the bracket and the needle-nosed pliers opener is only a central axis connection, the opener will rotate around the central axis after being stressed, which affects its opening degree. Therefore, an annular limiter is installed on the L-shaped bracket to limit its rotation to ensure the opening degree of the needle-nosed pliers. The fixing point of the limiter, if it is too high, will not play the limiting function and will collapse, and if it is too low, it will affect the opening degree and cannot be fully opened. After the grounding wire clamp is fully opened by using the wire to clamp the spring tongue, a suitable position is selected to fix the limit ring on the outer edge of the L-shaped bracket in the form of surface welding to determine the position of the limiter.

[0041] Preferably, Figure 6 As shown, the bracket 2 is configured as an L-shaped bracket, and the L-shaped bracket includes a support frame 201 and a connecting frame 202. The support frame 201 includes two parallel clamping plates, wherein one end of the two clamping plates is welded with a connecting plate, and the other end of the two clamping plates is provided with a through hole 203. The needle-nosed pliers-type opener is hinged between the through holes 203 of the two clamping plates, and the inner sides of the two clamping plates are provided with an arc 204;

[0042] The bottom of the connecting frame 202 is provided with a threaded hole 9 corresponding to the grounding wire clamp head of the grounding wire operating rod, and the top of the connecting frame 202 is welded to one end of the support frame 201 close to the connecting plate. When the bracket is connected to the grounding wire clamp head of the grounding wire operating rod, it is necessary to ensure that it fits with the grounding wire clamp head and can fit with the original bolt hole of the grounding wire clamp head.

[0043] The L-shaped structure has stable performance and requires the least amount of material. Compared with the H-shaped structure, it can reduce the weight of the device while ensuring stability, so the L-shaped bracket is selected; considering that the diameter of the through hole must be smaller than the diameter of the connection of the needle-nosed pliers body, the diameter of the bolt passing through the hole can only be less than 8mm, and generally between 2-6mm. After multiple drilling tests, it was found that a 6mm diameter bolt can meet the connection strength between the pliers body and the clamping plate. The arc-shaped design leaves operating space for the opening of the needle-nosed pliers, which can be operated more conveniently and flexibly.

[0044] Preferably, Figures 4-5 As shown, a hook is provided at the tail of the first control rod 3, and a connecting screw is provided on the inner side of the hook between the two movable plates 5 and close to the first control rod 3, and the hook of the first control rod 3 is engaged with the connecting screw;

[0045] The second control rod 4 is bolted to one end of the movable plate 5, the connecting screw is fixed in the middle of the movable plate 5, and the other end of the movable plate 5 is connected by a screw 6. A hook is welded at the tail of the first control rod. The main purpose of this design is to ensure that the movable plate and the clamp-type lever are always connected, so as to maintain a stable mechanical linkage during operation, ensure precise control and stable operation, and ensure that the expected effect is always maintained during use; the other end of the movable plate is connected by a screw, which is convenient for the insulating rope to pass through the screw of the movable plate for fixing, so that the movable plate can be manually pulled to move at a fixed point, and then the grounding clamp is opened to complete the installation or removal of the grounding clamp from the wire, which effectively improves the work efficiency and safety.

[0046] Preferably, a bearing is provided on the connecting screw, and the hook of the first control rod 3 is engaged with the bearing. Providing a bearing on the connecting screw and allowing the hook of the first control rod to engage with the bearing is a method for improving mechanical efficiency and ease of operation. The main function of the bearing is to reduce the friction between two mutually moving parts. The bearing is installed on the connecting screw. When the first control rod moves, the hook contacts the bearing instead of directly contacting the screw, thereby greatly reducing the friction resistance. Due to the presence of the bearing, the force required by the operator to move the movable plate is greatly reduced. This not only makes the operation easier, but the bearing can disperse and reduce the force acting on the connecting screw, thereby reducing the wear of the screw and other components, which helps to extend the service life of the tool.

[0047] Preferably, Figures 1 to 5 As shown, the length of the first control rod 3 is twice the length of the second control rod 4. The length of the second control rod on the fixed fulcrum side is halved, and the first control rod on the other side is lengthened, so that the travel of the needle-nosed jaws is larger, ensuring the magnification of the device while the lever is pulled downward. This design improves the performance and efficiency of the tool.

[0048] Preferably, Figure 1 , 2 As shown in FIG. 4 , a rope threading ring 8 is welded on the outer side of the connecting frame 202. One end of the insulating rope connected to the movable plate passes through the rope threading ring for pulling. It is usually a ring-shaped or U-shaped metal part used to guide the insulating rope to pass through. When the insulating rope is pulled, the force acts directly on the movable plate through the rope threading ring, reducing the possibility of force dispersion and loss. By making the force more concentrated, the design of the rope threading ring can improve the operating efficiency.

[0049] Preferably, Figure 6As shown, the upper part of the connecting frame 202 is provided with a plurality of through holes 10. The weight of the head of the grounding wire operating rod is a laborious lever, and the total length of the 220kV grounding wire operating rod is 4.5m, and the operator's hand-held length of 0.5m can be regarded as a laborious lever. It is calculated that for every 1kg increase in the head of the operating rod, the operator needs to pay 4.0 / 0.5=8 times the force, so the weight of the opener bracket should be <200g as an acceptable range, so the device needs to consider the weight while meeting the performance requirements. In order to make the device lightweight, punching some through holes is indeed an effective weight reduction method. At the same time, the position, size, number and distribution of the holes should be considered to ensure the balance between the weight reduction effect and the structural strength. At present, two through holes are set on the upper part of the connecting frame for weight reduction. At the same time, the weight problem is taken into consideration when designing the device, such as the selection of the L-shaped bracket, and the material of the bracket can also be changed from stainless steel to aluminum alloy to achieve the best effect.

[0050] A method for using a double-tongue spring-piece opening device for a drainage line comprises the following steps:

[0051] (1) Assemble the device with the grounding wire operating rod and the grounding wire; bolt the bracket 2 to the grounding wire clamp head of the grounding wire operating rod, and insert the head of the spring tongue opener 1 into the groove of the grounding wire clamp head;

[0052] (2) Installing the grounding wire; tying one end of the insulating rope to the screw of the movable plate 5, pulling the insulating rope linkage spring tongue opener 1, opening the grounding wire clamp, hanging the grounding wire clamp on the conductor of the working line drainage line, loosening the insulating rope, the spring tongue automatically clamps the conductor due to the elastic force, completing the installation of the grounding wire, and tying the excess insulating rope to the working tower to fix the tail of the grounding wire operating rod;

[0053] (3) After the work is completed, remove the grounding wire; pull the insulating rope linked spring tongue opener 1 to open the grounding wire clamp, remove the grounding wire clamp from the conductor, and untie the insulating rope fixed on the working tower to complete the removal of the grounding wire.

[0054] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the field without departing from the purpose of the present invention. These changes involve related technologies well known to those skilled in the art, which all fall within the scope of protection of the patent of the present invention.

[0055] Many other changes and modifications may be made without departing from the concept and scope of the present invention.It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A double-tongue spring-type opening device for drainage wire, characterized in that: The invention comprises a bracket (2), one end of which is connected to the grounding wire clamp head of the grounding wire operating rod, and the other end of which is movably connected to a spring tongue opener (1), wherein a first control rod (3) and a second control rod (4) are respectively provided on both sides of the spring tongue opener (1), and the tails of the first control rod (3) and the second control rod (4) are connected to movable plates (5), and the movable plates (5) are provided in two numbers, and the movable plates (5) are respectively provided on both sides of the first control rod (3) and the second control rod (4), and the second control rod (4) is fixed between the two movable plates (5) by bolts, and the first control rod (3) can move between the two movable plates (5), and the movable plate (5) can move around the fixing point of the second control rod (4).

2. The double-tongue spring opening device for drainage line according to claim 1, characterized in that: The spring tongue opener (1) is a needle-nosed pliers-type opener, and the head diameter of the needle-nosed pliers-type opener is less than 5 mm.

3. The double-tongue spring-piece opening device for drainage wire according to claim 2, characterized in that: A limiting ring (7) is arranged on the outer side of the needle-nosed pliers-type opener, and the limiting ring (7) is welded to the bracket (2).

4. The double-tongue spring-piece opening device for drainage wire according to claim 3, characterized in that: The bracket (2) is configured as an L-shaped bracket, the L-shaped bracket comprising a support frame (201) and a connecting frame (202), the support frame (201) comprising two clamping plates arranged in parallel, wherein one end of the two clamping plates is welded with a connecting plate, the other ends of the two clamping plates are provided with through holes (203), the needle-nosed pliers-type opener is hinged between the through holes (203) of the two clamping plates, and the inner sides of the two clamping plates are provided with circular arcs (204); A threaded hole (9) corresponding to the grounding wire clamp head of the grounding wire operating rod is provided at the bottom of the connecting frame (202), and the top of the connecting frame (202) is welded to an end of the supporting frame (201) close to the connecting plate.

5. The double-tongue spring-piece opening device for drainage wire according to any one of claims 1 to 4, characterized in that: A hook is provided at the tail of the first control rod (3), and a connecting screw is provided on the inner side of the hook close to the first control rod (3) between the two movable plates (5), and the hook of the first control rod (3) is engaged with the connecting screw; The second control rod (4) is bolted to one end of the movable plate (5), the connecting screw is fixed in the middle of the movable plate (5), and the other end of the movable plate (5) is connected by a screw (6).

6. The double-tongue spring-piece opening device for drainage wire according to claim 5, characterized in that: A bearing is provided on the connecting screw rod, and the hook of the first control rod (3) is engaged with the bearing.

7. The double-tongue spring-piece opening device for drainage wire according to claim 6, characterized in that: The length of the first control rod (3) is twice the length of the second control rod (4).

8. The double-tongue spring-piece opening device for drainage wire according to claim 4, characterized in that: A rope threading ring (8) is welded to the outer side of the connecting frame (202).

9. The double-tongue spring-piece opening device for drainage wire according to claim 4, characterized in that: A plurality of through holes (10) are provided on the upper portion of the connecting frame (202).

10. A method for using a double-tongue spring-piece opening device for a drainage line, characterized in that: Using the double-tongue spring-piece opening device for drainage wire according to any one of claims 1 to 9, perform the following steps: (1) Assemble the device with the grounding wire operating rod and the grounding wire; bolt the bracket (2) to the grounding wire clamp head of the grounding wire operating rod, and insert the head of the spring tongue opener (1) into the groove of the grounding wire clamp head; (2) Installing the grounding wire; tying one end of the insulating rope to the screw of the movable plate (5), pulling the insulating rope linkage spring tongue opener (1), opening the grounding wire clamp, hanging the grounding wire clamp on the conductor of the working line drainage line, loosening the insulating rope, and the spring tongue automatically clamps the conductor due to the elastic force, completing the installation of the grounding wire, and tying the excess insulating rope to the working tower to fix the tail of the grounding wire operating rod; (3) After the work is completed, the grounding wire is removed; the insulating rope linked spring tongue opener (1) is pulled to open the grounding wire clamp, the grounding wire clamp is removed from the conductor, and the insulating rope fixed on the working tower is untied to complete the removal of the grounding wire.

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