Mechanical gravity lock structure for mounting spacing rod of unmanned aerial vehicle

Abstract

The invention discloses a mechanical gravity lock structure for mounting a spacer of an unmanned aerial vehicle. The mechanical gravity lock structure comprises the spacer; the locking mechanism is connected to the two ends of the spacer and used for hoisting the spacer on the unmanned aerial vehicle; the locking mechanism comprises a base, two fixing clamps and a driving part, the two fixing clamps are symmetrically arranged in the base and can rotate relative to the base, and the driving part is arranged in the fixing clamps; when the unmanned aerial vehicle lowers the locking mechanism to the outer side of the electric wire to make the bottom edge of the base make contact with the electric wire, as the unmanned aerial vehicle continuously lowers the sliding rod, the pressure of the limiting spring on the sliding rod can promote the limiting rod to slide downwards into the straight groove from the interior of the guide groove, and in the process, the two fixing clamps can get close to each other and clamp the electric wire; when the limiting rod is located in the straight groove, the fixing clamp can be prevented from deflecting in the using process, and therefore the fixing clamp can stably clamp the electric wire.

Description

Technical Field

[0001] This invention relates to the field of spacer installation technology, and in particular to a mechanical gravity lock structure for installing spacers in unmanned aerial vehicles (UAVs). Background Technology

[0002] Spacer bars are electrical fittings used in overhead lines (especially high-voltage and ultra-high-voltage transmission lines). Their main function is to maintain the distance between split conductors, prevent the conductors from colliding and rubbing against each other under the action of wind, electromagnetic force or vibration, and at the same time suppress the vibration of the conductors in the wind, ensuring the safe and stable operation of the line.

[0003] Currently, the installation of spacers mostly relies on workers climbing to heights to secure them to the power lines. This method carries a high safety risk. Although there have been attempts to use drone technology for installation, the locking structures are mostly electrically controlled, which not only makes the fixing of spacers to power lines cumbersome but also increases the overall complexity of the spacer structure.

[0004] Therefore, it is necessary to provide a mechanical gravity lock structure for the installation of spacer bars on drones to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a mechanical gravity lock structure for installing spacers in drones, in order to solve the problem mentioned in the background art that the installation of existing spacers mostly relies on workers climbing to heights to fix them to the power lines, which poses a high safety risk.

[0006] Based on the above ideas, the present invention provides the following technical solution: a mechanical gravity lock structure for installing spacer bars in unmanned aerial vehicles, comprising:

[0007] Spacer bars;

[0008] A locking mechanism, connected to both ends of the spacer bar, is used to suspend the spacer bar onto the drone;

[0009] The locking mechanism includes a base, two fixed clamps and a driving member. The two fixed clamps are symmetrically arranged in the base and can rotate relative to the base. The driving member is disposed in the fixed clamps. When the driving member moves in the vertical direction relative to the fixed clamps, it can drive the fixed clamps to deflect relative to the base, so that the bottom ends of the two fixed clamps are in a clamped or loosened state.

[0010] As a further aspect of the present invention: the driving component includes a slide rod slidably mounted on the base, and a slider is connected to the bottom end of the slide rod. The slider is located in a fixed clamp, and limit rods are fixedly provided on both sides of the slider.

[0011] As a further aspect of the present invention: the fixing clamp has a straight groove and a guide groove that are interconnected along its height direction. The guide groove is located at the top of the straight groove. When the limiting rod slides in the straight groove, the bottom ends of the two fixing clamps are in a clamped state. When the limiting rod slides upward from the straight groove to the inside of the guide groove, the two fixing clamps deflect outward and are in an open state, so that the drone can lower the locking mechanism to the outside of the wire.

[0012] As a further aspect of the present invention: a limiting spring is provided between the slider and the inner top wall of the base, which can compress the limiting spring when the slider moves upward relative to the base.

[0013] As a further aspect of the present invention, a counterweight is provided on the base.

[0014] As a further aspect of the present invention: the top of the base is provided with an insertion hole, and the counterweight is fixedly provided with an insertion strip that mates with the insertion hole, so that the counterweight and the base can be detachably coupled.

[0015] As a further aspect of the present invention: a connecting frame is provided above the base, the top of the slide rod passes through the connecting frame and is fixedly engaged with the connecting frame, the drone is connected to the connecting frame by a traction rope, and the drone is connected to the counterweight by a connecting rope.

[0016] As a further aspect of the present invention: when the drone lifts the spacer bar through the locking mechanism, the connecting rope is in a slack state.

[0017] As a further aspect of the present invention, the guide groove is arc-shaped.

[0018] As a further aspect of the present invention: the guide groove is straight and is inclined inward relative to the straight groove.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. When the drone lowers the locking mechanism to the outside of the wire so that the bottom edge of the base contacts the wire, as the drone continues to lower the sliding rod, the pressure of the limiting spring on the sliding rod can cause the limiting rod to slide down from the guide groove to the straight groove. During this process, the two fixing clamps can approach each other and clamp the wire. When the limiting rod is inside the straight groove, it can prevent the fixing clamp from deflecting during use, so that the fixing clamp can stably clamp the wire.

[0021] 2. Use counterweights to increase the weight of the base, thereby compressing the limiting spring and placing the limiting rod in the guide groove. After the spacer is installed between the two sets of wires, the drone can take the counterweights off the base. In this way, the limiting spring can be selected with a large stiffness coefficient, which is conducive to the stable clamping of the fixing clamp on the outside of the wire. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a front view of the present invention;

[0025] Figure 3 This is a schematic diagram of the two fixing clips of the present invention in the open state;

[0026] Figure 4 This is a schematic diagram of the arc-shaped guide groove of the present invention;

[0027] Figure 5 This is a schematic diagram of the linear guide groove structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the two fixing clips of the present invention in a clamped state.

[0029] In the diagram: 1. Spacer bar; 2. Counterweight; 3. Wire; 4. Base; 5. Traction rope; 501. Box body; 6. Connecting rope; 7. Slide bar; 8. Connecting frame; 9. Stop; 10. Fixing clamp; 11. Guide groove; 12. Slider; 1201. Limiting rod; 13. Straight groove; 14. Pin; 15. Insertion hole; 16. Limiting spring. Detailed Implementation

[0030] like Figures 1-6 As shown, the mechanical gravity lock structure for installing spacer bars on drones includes spacer bars 1 and locking mechanisms that are fixed to both ends of spacer bars 1 by bolts. In use, the locking mechanisms are hoisted onto the drone, which then lifts the spacer bars 1 to the required installation position. After that, the drone is adjusted so that the locking mechanisms are aligned with the wires 3. As the drone lowers the spacer bars 1, the locking mechanisms can fall outside the wires 3 and hold the wires 3 tightly, thereby stably installing the spacer bars 1 between the two wires 3.

[0031] Reference Figures 1-5 As shown, the locking mechanism includes a U-shaped base 4 and a pair of fixing clips 10 rotatably disposed inside the base 4. Figure 3As can be seen, a pin 14 is arranged inside the base 4 to rotate with the fixing clamp 10, so that the bottom ends of the two fixing clamps 10 can move closer or further apart, thereby completing the clamping of the wire 3. Preferably, the pin 14 is located near the top of the fixing clamp 10, so that the bottom end of the fixing clamp 10 has a large opening angle, which is beneficial for the drone to lower the fixing clamp 10 in the open state to the outside of the wire 3.

[0032] To drive the fixed clamp 10 to deflect, a driving component is slidably mounted on the base 4. When the driving component moves vertically relative to the base 4, the fixed clamp 10 can rotate relative to the base 4 with the pin 14 as the fulcrum. The driving component includes a slide rod 7, which can slide vertically relative to the base 4. (Refer to...) Figures 3-5 As shown, the two fixing clips 10 extend outward from their opposite sides near the bottom to form a stop 9. The intersection of the side of the fixing clip 10 and the stop 9 is set as an arc surface, so that the fixing clip 10 can better fit the surface of the wire 3. Furthermore, the fixing clip 10 has a straight groove 13 and a guide groove 11 that are interconnected along its height direction. The guide groove 11 is located at the top of the straight groove 13. The end of the sliding rod 7 that passes downward through the base 4 is fixedly connected to a slider 12 by bolts. The slider 12 can slide up and down in the fixing clip 10, and limit rods 1201 are fixedly provided on both sides of the slider 12. Figures 2-3 , Figure 5 As shown, when the limiting rod 1201 slides within the straight groove 13, the bottom ends of the two fixing clamps 10 are in a close, clamping state, combined with Figure 4 As shown, when the limiting rod 1201 slides upward from the straight groove 13 into the guide groove 11, the pressure of the limiting rod 1201 on the side wall of the guide groove 11 can cause the two fixing clamps 10 to deflect outward and be in an open state, so that the drone can lower the locking mechanism to the outside of the wire 3. Furthermore, the limiting rod 1201 is located outside the pin 14, so that when the limiting rod 1201 is inside the guide groove 11, the fixing clamps 10 can remain in an outwardly open state.

[0033] Example 1: As a locking method for the fixing clip 10, in actual use, the weight of the driving component can be increased. Specifically, when the drone lowers the opened fixing clip 10 to the outside of the wire 3, the gravity of the driving component can press down the fixing clip 10, so that when the limiting rod 1201 slides down into the straight groove 13, the two fixing clips 10 can stably clamp the wire 3.

[0034] The above embodiment increases the weight of the driving component to make the two fixed clamps 10 clamp together, but it also increases the overall weight of the locking mechanism. Since the weight is concentrated at both ends of the spacer bar 1, the locking mechanism is more likely to be displaced relative to the wire 3 when the wire 3 vibrates or swings. Based on this, this solution provides another embodiment.

[0035] Example 2: A limiting spring 16 is fitted on the outside of the slide rod 7, and the limiting spring 16 is located between the slider 12 and the base 4, so that the slide rod 7 and the base 4 are elastically engaged. Figures 1-2 As shown, since each of the four sliding rods 7 is fitted with a limiting spring 16, the force on each limiting spring 16 is as follows: F 弹 ≈G×(M 锁紧机构 / 2+M 间隔棒 / 4);

[0036] To ensure the clamping clip 10 can stably clamp the wire 3, the elastic force of the limiting spring 16 should be as large as possible, as shown in the above formula. To increase the elastic force of the limiting spring 16, the weight of the spacer bar 1 itself or the weight of the locking mechanism can be increased. Specifically, when increasing the weight of the locking mechanism, the weight of the base 4 itself can be increased, or a counterweight 2 can be connected to the base 4. Specifically, when the drone lifts the slide bar 7, the weight of the base 4 compresses the limiting spring 16 fitted on the outside of the slide bar 7, allowing the base 4 to move downward relative to the slide bar 7. The limiting rod 1201 will also slide from the straight groove 13 into the guide groove 11, thereby opening the clamping clip 10. When the drone lowers the locking mechanism to the outside of the wire 3 so that the bottom edge of the base 4 contacts the wire 3, as the drone continues to lower the slide bar 7, the limiting spring... The pressure of the 16 sliding rods 7 can cause the limiting rod 1201 to slide down from the guide groove 11 into the straight groove 13. During this process, the two fixing clamps 10 can approach each other and clamp the wire 3. Specifically, the outer diameter of the limiting rod 1201 should be slightly smaller than the width of the straight groove 13. When the limiting rod 1201 is inside the straight groove 13, it can prevent the fixing clamp 10 from deflecting during use, so that the fixing clamp 10 can stably clamp the wire 3. Of course, this method is similar to the effect in Embodiment 1, which will make the two ends of the spacer 1 relatively heavy, so that the whole device is easy to move relative to the wire. In this embodiment, it is preferable to increase the weight of the spacer 1. Compared with Embodiment 1, the weight is not concentrated at both ends of the spacer 1, so that the locking mechanism is lightweight and can further prevent the locking mechanism from moving due to the vibration or swing of the wire 3.

[0037] In Embodiment 2, the fixing clamp 10 is locked by the setting of the limiting spring 16 in conjunction with the gravity of the spacer bar 1. However, it is undeniable that the overall gravity of the device will still increase. Based on this, this solution provides a third way to lock the fixing clamp 10.

[0038] Example 3: The counterweight 2 is detachably connected to the base 4. Initially, the counterweight 2 is used to increase the weight of the base 4, thereby compressing the limiting spring 16, so that the limiting rod 1201 is in the guide groove 11. After the spacer 1 is installed between the two sets of wires 3, the drone can take away the counterweight 2 on the base 4. In this way, the limiting spring 16 can be selected to have a large stiffness coefficient, which is conducive to the stable clamping of the fixing clamp 10 on the outside of the wire 3. The sliding rod 7 can be selected from lightweight materials such as plastic to reduce the overall weight of the locking mechanism. Due to the reduction in weight, when the wire 3 vibrates or swings, the locking mechanism will not move relative to the wire 3 due to its limited inertial force. In summary, the method of Example 3 can not only stably clamp the locking mechanism on the outside of the wire 3, but also resist the vibration and swing of the wire 3.

[0039] Reference Figures 2-5 As shown, a connecting frame 8 is provided above the base 4. The top of the sliding rod 7 passes through the connecting frame 8 and is fixedly engaged with it. The top surface of the connecting frame 8 and the top surface of the counterweight 2 are both fixedly connected to the hanging plate, so that the drone is connected to the hanging plate on the connecting frame 8 by a traction rope 5, and the drone is connected to the hanging plate on the counterweight 2 by a connecting rope 6. Initially, the connecting rope 6 is in a slack state. When the drone lifts the spacer 1 so that the spacer 1 is installed between the two sets of wires 3, the traction rope 5 can be cut, so that the spacer 1 stays on the wires 3. During the process of the drone moving away, the counterweight 2 can be lifted by the connecting rope 6.

[0040] Specifically, a box 501 can be installed on the traction rope 5, so that the traction rope 5 passes through the box 501. The traction rope 5 on the side of the box 501 closest to the drone is fixedly engaged with the box 501. The traction rope 5 on the side of the box 501 closest to the connecting frame 8 can slide relative to the box 501. A small electric cutting device is installed on the box 501. Of course, the small electric cutting device can also be directly mounted on the traction rope 5. In actual use, the staff can remotely control the small electric cutting device through a signal connection so that the small electric cutting device can cut the traction rope 5. Since the electric cutting device is a common device on the market, its structure and working principle will not be described in detail here.

[0041] Of course, a hook can also be fixed at the bottom of the traction rope 5 so that the hook is connected to the hanging plate on the connecting frame 8. This method is simpler, but its stability is not as good as the above structure.

[0042] like Figures 1-6 As shown, the base 4 has an insertion hole 15 on its top surface, and the counterweight 2 is fixedly provided with a strip that matches the insertion hole 15, so that the counterweight 2 can be inserted into the base 4, which is beneficial for the drone to take the counterweight 2 away from the base 4 by the connecting rope 6.

[0043] The counterweight 2 can be as follows: Figure 1 The U-shaped structure shown has the counterweight 2 having both inner side walls that are inclined outwards, which facilitates the separation of the counterweight 2 from the base 4.

[0044] Reference Figure 3 As shown, the pin 14 is fixed inside the base 4, and the pin 14 passes through the fixing clamp 10 and rotates with it.

[0045] In actual use, a through hole for the slide rod 7 to pass through can be directly opened on the base 4, or a guide cylinder can be fixedly installed on the base 4 so that the slide rod 7 passes through the guide cylinder and slides with it.

[0046] Combination Figures 3-5 As shown, of the two fixing clips 10 located inside the base 4, one fixing clip 10 has a smaller width. When the limiting rod 1201 slides into the straight groove 13, the fixing clip 10 with a smaller width can be located inside the other fixing clip 10, thereby avoiding interference between the two fixing clips 10 when clamping the wire 3.

[0047] Combination Figures 4-5 As shown, the guide groove 11 can be Figure 4 The arc shape in the middle can also be Figure 5 Specifically, when the guide groove 11 is straight, the guide groove 11 needs to be inclined inward relative to the straight groove 13 so that when the limiting rod 1201 slides upward from the straight groove 13 into the guide groove 11, the fixing clamp 10 can maintain a stable open state.

[0048] The above-disclosed examples are merely preferred embodiments of this application, intended to facilitate understanding and implementation by those skilled in the art. However, they cannot be used to limit the scope of this application. Therefore, equivalent variations made within the scope of this application are still within the scope of this application.

Claims

1. A mechanical gravity lock structure for installing spacer bars in unmanned aerial vehicles, characterized in that, include: Spacer (1); A locking mechanism is connected to both ends of the spacer (1) and is used to suspend the spacer (1) on the UAV; The locking mechanism includes a base (4), two fixed clamps (10) and a driving member. The two fixed clamps (10) are symmetrically arranged in the base (4) and can rotate relative to the base (4). The driving member is disposed in the fixed clamps (10). When the driving member moves in the vertical direction relative to the fixed clamps (10), it can drive the fixed clamps (10) to deflect relative to the base (4), so that the bottom ends of the two fixed clamps (10) are in a clamped or loosened state.

2. The mechanical gravity lock structure for installing spacer bars in unmanned aerial vehicles according to claim 1, characterized in that: The driving component includes a slide rod (7) slidably mounted on the base (4), and a slider (12) is connected to the bottom end of the slide rod (7). The slider (12) is located in the fixed clamp (10), and limit rods (1201) are fixedly provided on both sides of the slider (12).

3. The mechanical gravity lock structure for installing spacer bars in unmanned aerial vehicles according to claim 2, characterized in that: The fixing clamp (10) has a straight groove (13) and a guide groove (11) that are interconnected along its height direction. The guide groove (11) is located at the top of the straight groove (13). When the limiting rod (1201) slides in the straight groove (13), the bottom ends of the two fixing clamps (10) are in a clamped state. When the limiting rod (1201) slides upward from the straight groove (13) to the inside of the guide groove (11), the two fixing clamps (10) deflect outward and are in an open state, so that the drone can lower the locking mechanism to the outside of the wire (3).

4. The mechanical gravity lock structure for installing spacer bars in unmanned aerial vehicles according to claim 3, characterized in that: A limiting spring (16) is provided between the slider (12) and the inner top wall of the base (4). When the slider (12) moves upward relative to the base (4), it can compress the limiting spring (16).

5. The mechanical gravity lock structure for installing spacer bars in unmanned aerial vehicles according to claim 4, characterized in that: A counterweight (2) is provided on the base (4).

6. The mechanical gravity lock structure for installing spacer bars in unmanned aerial vehicles according to claim 5, characterized in that: The base (4) has an insertion hole (15) on its top, and the counterweight (2) is fixedly provided with a strip that matches the insertion hole (15), so that the counterweight (2) and the base (4) can be detachably matched.

7. The mechanical gravity lock structure for installing spacer bars in unmanned aerial vehicles according to claim 5, characterized in that: A connecting frame (8) is provided above the base (4). The top of the slide rod (7) passes through the connecting frame (8) and is fixedly engaged with the connecting frame (8). The drone is connected to the connecting frame (8) by a traction rope (5), and the drone is connected to the counterweight (2) by a connecting rope (6).

8. The mechanical gravity lock structure for installing spacer bars in unmanned aerial vehicles according to claim 7, characterized in that: When the drone lifts the spacer bar (1) through the locking mechanism, the connecting rope (6) is in a slack state.

9. The mechanical gravity lock structure for installing spacer bars in unmanned aerial vehicles according to claim 3, characterized in that: The guide groove (11) is arc-shaped.

10. The mechanical gravity lock structure for installing spacer bars in unmanned aerial vehicles according to claim 3, characterized in that: The guide groove (11) is straight and is inclined inward relative to the straight groove (13).

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