A self-propelled vehicle capable of returning midway

Abstract

The present invention provides a self-propelled vehicle that can return midway, and belongs to the technical field of power transmission. The present invention can respectively realize the lifting of one end of the double rollers in the driving wheel assembly, the clamping of the overhead ground wire, and the unlocking of the self-locking structure on the double rollers by arranging a lifting component, a pushing component, and an unlocking component on the main bracket, which can not only appropriately reduce the friction force, but also prevent the safety problem caused by slipping during the return process due to excessive reduction of the friction force. In addition, the restriction of the self-locking structure on the unidirectional rotation of the roller is eliminated, so that the roller can rotate in the opposite direction, thereby facilitating the operator to pull the self-propelled vehicle back in the opposite direction, and preventing the self-propelled vehicle from stopping between the two tower ends due to damage of the travel drive motor of the self-propelled vehicle. There is no need to manually move from the overhead ground wire to the stagnant place for auxiliary operation, and the operation is time-saving and labor-saving, safer, and conducive to the use and promotion of the self-propelled vehicle.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission, and in particular to a self-propelled vehicle capable of returning midway. Background Art

[0002] As a key component in the power transmission network, wires are the main carrier for electric energy transmission. Therefore, maintenance and replacement of wires is an effective means to ensure power safety.

[0003] The self-propelled vehicle is a structure that replaces the existing overhead ground wire (stranded steel wire) with a composite optical cable ground wire. During the construction process, the double rollers of the self-propelled vehicle are installed on the overhead ground wire, and the double rollers of the self-propelled vehicle are driven by the motor to move on the overhead ground wire to achieve movement from one tower end to the other tower end, thereby transporting the composite optical cable ground wire to be replaced from one tower end to the other tower end, without the need for manual operation over the overhead ground wire, which is more convenient to operate and safer. However, the existing self-propelled vehicle has a fixed structure and is more restrictive, and in order to ensure tension and stability, the double rollers will be provided with a self-locking structure, which results in the self-propelled vehicle being able to move only in one direction and not in reverse. However, in actual use, since the travel drive motor of the double roller needs to bear a large load for a long time and is prone to damage and failure, when the travel drive motor is damaged and fails, the self-propelled vehicle will stop between the two tower ends, and it must be manually moved from the overhead ground wire to that place for auxiliary operation, which still poses a large safety risk, and the operation is still time-consuming and labor-intensive, which is not conducive to the use and promotion of the self-propelled vehicle. Summary of the invention

[0004] In view of the above-mentioned problems existing in the prior art, the present invention aims to provide a self-propelled vehicle that can return midway, so that a lifting assembly, a pushing assembly and an unlocking assembly are arranged on the main bracket, and the lifting assembly is used to realize the tilting of the double rollers to reduce friction, and the pressing wheel is pushed to the roller that is not tilted by the pushing assembly, so as to maintain stable contact with the overhead ground wire and prevent the safety risk caused by excessive sliding due to excessive friction. In addition, the self-locking structure between the double rollers is released by the unlocking assembly, so that the rollers can rotate in the opposite direction, thereby facilitating the operator to pull the self-propelled vehicle back in the opposite direction, avoiding the problem of manual movement from the overhead ground wire to that place for auxiliary operation, reducing safety risks, saving time and effort in operation, and facilitating the use and promotion of self-propelled vehicles.

[0005] The specific technical solutions are as follows:

[0006] A self-propelled vehicle capable of returning midway has the following characteristics, including:

[0007] The main support comprises a vertical rod and a horizontal rod, the horizontal rod is arranged horizontally, and the vertical rod is arranged vertically and the lower end of the vertical rod is fixed to one end of the horizontal rod;

[0008] The driving wheel assembly includes a mounting plate, a connecting pin, a double roller and a travel driving motor. The connecting pin is protrudingly mounted on the middle of the mounting plate, and the connecting pin is rotatably mounted on the upper end of the vertical pole. Two rollers of the double rollers are respectively mounted on both ends of the mounting plate and connected by a toothed belt. A self-locking structure is provided between one roller and the mounting plate. At the same time, the travel driving motor is mounted on one end of the mounting plate and is connected to the roller power at the end.

[0009] A clamping assembly, the clamping assembly includes a swing rod, a swing shaft, a first torsion spring and a clamping wheel, one end of the swing shaft is mounted on the cross bar, the lower end of the swing rod is hinged on the swing shaft, a first torsion spring is arranged between the swing rod and the swing shaft, and the upper end of the swing rod extends between the two rollers and is rotatably mounted with a clamping wheel;

[0010] A hook, one end of which is hinged to the mounting plate;

[0011] A generator is installed below the crossbar and is electrically connected to the travel drive motor;

[0012] A lifting component is arranged between the other end of the crossbar and one end of the mounting plate, and pushes one end of the mounting plate to tilt up or reset;

[0013] A push assembly, which is arranged between the swing shaft and the crossbar, and pushes the swing shaft to move horizontally on the crossbar;

[0014] An unlocking component is arranged on the mounting plate and acts on the self-locking structure.

[0015] The above-mentioned self-propelled vehicle capable of returning midway further comprises a generator frame, the upper end of the generator frame is rotatably mounted on the bottom of the cross bar, and the generator is fixedly mounted on the generator frame.

[0016] The above-mentioned self-propelled vehicle that can return midway, wherein the lifting assembly includes a lifting screw, a rotating nut and a rotating motor, the rotating nut is rotatably installed at the other end of the cross bar, the rotating motor is power-connected to the rotating nut, the upper end of the lifting screw is hinged to one end of the mounting plate, and the lower end of the lifting screw is threadedly connected to the rotating nut.

[0017] The above-mentioned self-propelled vehicle capable of returning midway, wherein a horizontal slide groove is arranged on the cross bar, a slider is slidably arranged in the slide groove, one end of the swing shaft is fixedly mounted on the slider, and the push assembly is connected to the slider.

[0018] The above-mentioned self-propelled vehicle that can return midway, wherein the pushing assembly includes a rotating connection head, a first connecting rod and a second connecting rod, the rotating connection head is installed at the lower end of the lifting screw rod, and a protruding first rotating pin is arranged on the rotating connection head, the middle part of the first connecting rod is hinged on the cross bar, and the lower end of the first connecting rod is provided with a first sliding hole in the shape of a strip along its length direction, and the first rotating pin is inserted in the first sliding hole. At the same time, the upper end of the first connecting rod extends to the top of the slider, and one end of the second connecting rod is hinged to the upper end of the first connecting rod, and the middle part of the second connecting rod is provided with a second sliding hole in the shape of a strip along its length direction, and the second rotating pin is arranged in the second sliding hole, and one end of the second rotating pin is fixedly installed on the cross bar, and the other end of the second connecting rod is hingedly connected to the slider.

[0019] The above-mentioned self-propelled vehicle that can return midway, wherein the self-locking structure includes a ratchet, a pawl, a rotating shaft and a second torsion spring, the ratchet is coaxially mounted on a roller, one end of the rotating shaft is fixed to a mounting plate and is located beside the ratchet, the pawl is rotatably mounted on the rotating shaft and arranged toward the ratchet, the second torsion spring is mounted on the rotating shaft on which the pawl rotates, and the two ends of the second torsion spring are respectively pressed against the pawl and the mounting plate.

[0020] The above-mentioned self-propelled vehicle that can return midway, wherein the unlocking component includes a pulley and a cable, the pulley is rotatably mounted on the mounting plate and is located above and beside the pawl, one end of the cable is fixed to the claw head of the pawl, and the other end of the cable is wrapped around the pulley and extends downward to the upper end of the first connecting rod.

[0021] The above-mentioned self-propelled vehicle that can return midway, wherein a buffer assembly is arranged between the hook and the mounting plate, the buffer assembly includes a pull rod, a tension spring and an anti-collision wheel, one end of the pull rod is hinged to the mounting plate, the hook is installed on the other end of the pull rod, one end of the tension spring is connected to the end of the pull rod where the hook is installed, the other end of the tension spring is connected to the lower end of the cross bar or the vertical bar, and the anti-collision wheel is rotatably installed on the pull rod and is located below the roller.

[0022] The above-mentioned self-propelled vehicle that can return midway, wherein a bayonet is provided at the upper end of the vertical pole, one end of the connecting pin is inserted into the bayonet, and at the same time, a limiting bolt is threadedly installed at the opening of the bayonet, one end of the limiting bolt extends into the bayonet and abuts against the connecting pin.

[0023] The above-mentioned self-propelled vehicle that can return midway also includes a controller, which is arranged on the generator frame. The controller is electrically connected to the generator, the travel drive motor and the rotating motor. At the same time, a control switch is arranged on the controller, and the controller is communicatively connected to a remote control.

[0024] The positive effects of the above technical solution are:

[0025] The above-mentioned self-propelled vehicle that can return midway, by arranging a lifting component, a pushing component and an unlocking component on the main bracket, respectively realizes the lifting of the double rollers, maintains the clamping of the overhead ground wire and unlocks the self-locking structure on the double rollers, which can not only appropriately reduce friction and facilitate subsequent return movement, but also prevent the safety risk caused by excessive reduction of friction and excessive sliding during the return process. In addition, the restriction of the self-locking structure on the rollers is eliminated, so that the rollers can rotate in the opposite direction, thereby facilitating the operator to pull the self-propelled vehicle back in the opposite direction, realizing the reverse movement of the self-propelled vehicle, and preventing the problem of manual movement from moving from the overhead ground wire to the stagnant point for auxiliary operation when the travel drive motor of the self-propelled vehicle is damaged. The safety guarantee is higher, the operation saves time and effort, and is conducive to the use and promotion of self-propelled vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A structural diagram from one perspective of an embodiment of a self-propelled vehicle capable of returning midway according to the present invention;

[0027] Figure 2 A structural diagram of another perspective of an embodiment of a self-propelled vehicle capable of returning midway according to the present invention;

[0028] Figure 3 This is a combined installation diagram of a lifting assembly, a sliding assembly and an unlocking assembly according to a preferred embodiment of the present invention.

[0029] In the attached drawings: 1. Main support; 11. Vertical pole; 12. Cross bar; 111. Bayonet; 112. Limit bolt; 121. Slide groove; 122. Slider; 123. Second rotating pin; 2. Driving wheel assembly; 21. Mounting plate; 22. Connecting pin; 23. Roller; 24. Travel driving motor; 25. Toothed belt; 26. Self-locking structure; 211. Damping plate; 212. Wire rope; 231. Overhead ground wire; 261. Ratchet; 262. Ratchet; 263. Second torsion spring; 264. Rotating shaft; 3. Pressing assembly; 31. Swing rod; 32. Swing shaft; 33. The first torsion spring; 34, the clamping wheel; 35, the handle; 351, the rotating rod; 4, the hook; 41, the buffer assembly; 411, the pull rod; 412, the tension spring; 413, the anti-collision wheel; 5, the generator; 51, the generator frame; 6, the lifting assembly; 61, the lifting screw rod; 62, the rotating nut; 63, the rotating motor; 7, the pushing assembly; 71, the rotating connector; 72, the first connecting rod; 73, the second connecting rod; 711, the first rotating pin; 721, the first sliding hole; 731, the second sliding hole; 8, the unlocking assembly; 81, the pulley; 82, the cable; 9, the controller. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the following embodiments are combined with the attached Figure 1 To Attachment Figure 3 The technical solution provided by the present invention is described in detail, but the following content is not intended to limit the present invention.

[0031] Figure 1 A structural diagram from one perspective of an embodiment of a self-propelled vehicle capable of returning midway according to the present invention; Figure 2 FIG. 2 is a structural diagram of another perspective of an embodiment of a self-propelled vehicle capable of returning midway according to the present invention. Figure 1 and Figure 2 As shown, the self-propelled vehicle capable of returning midway provided in this embodiment includes: a main support 1, a driving wheel assembly 2, a clamping assembly 3, a hook 4, a generator 5, a lifting assembly 6, a pushing assembly 7 and an unlocking assembly 8.

[0032] Specifically, the main support 1 includes an upright pole 11 and a cross bar 12. At this time, the cross bar 12 is arranged horizontally, the upright pole 11 is arranged vertically, and one end of the cross bar 12 is fixedly connected to the lower end of the upright pole 11, so that the upright pole 11 and the cross bar 12 form an approximately "L"-shaped structure, which provides an installation foundation and installation and movement space for subsequent driving wheel assembly 2, clamping assembly 3, hook 4, generator 5, lifting assembly 6, pushing assembly 7 and unlocking assembly 8.

[0033] Specifically, the driving wheel assembly 2 is installed at the upper end of the vertical pole 11. At this time, the driving wheel assembly 2 also includes a mounting plate 21, a connecting pin 22, a double roller and a travel drive motor 24. The connecting pin 22 is protrudingly installed in the middle of the mounting plate 21, and the connecting pin 22 is rotatably installed on the upper end of the vertical pole 11, so that the mounting plate 21 can rotate around the axis of the connecting pin 22 at the upper end of the vertical pole 11, which can not only adapt to the angle state change when climbing, but also provide convenience for the subsequent tilting of one end of the double roller. In addition, the two rollers 23 of the double rollers are respectively installed at both ends of the mounting plate 21 and connected by a toothed belt 25, so that the two rollers 23 of the double rollers can support the two ends of the mounting plate 21 respectively, so that when the self-propelled vehicle moves on the overhead ground wire 231 later, it can contact the ground wire through the two rollers 23, and the walking stability is higher. In addition, the synchronous movement of the two rollers 23 is achieved through the toothed belt 25, so that the two rollers 23 are both driving wheels, thereby maintaining the friction force when the self-propelled vehicle automatically walks. In addition, a self-locking structure 26 is provided between a roller 23 and the mounting plate 21, so that when the self-propelled vehicle is moving automatically, the self-locking structure 26 can limit the rotation direction of the roller 23 to prevent the problem of being pulled back when dragging the line, and the safety guarantee is higher. At the same time, the travel drive motor 24 is installed at one end of the mounting plate 21 and is connected to the roller 23 at this end, that is, the travel drive motor 24 can drive the roller 23 to rotate, thereby achieving the purpose of the roller 23 automatically moving on the overhead ground wire 231.

[0034] Specifically, the clamping assembly 3 includes a swing rod 31, a swing shaft 32, a first torsion spring 33 and a clamping wheel 34. At this time, one end of the swing shaft 32 is mounted on the cross bar 12, and at the same time, the lower end of the swing rod 31 is hinged on the swing shaft 32, so that the swing rod 31 can swing on the swing shaft 32, and a first torsion spring 33 is arranged between the swing rod 31 and the swing shaft 32. The first torsion spring 33 applies a torsional force between the swing rod 31 and the swing shaft 32, thereby applying a clamping force to the swing rod 31. At the same time, The upper end of the rocker arm 31 extends between the two rollers 23 and is rotatably installed with a clamping wheel 34, so that the rocker arm 31 can drive the clamping wheel 34 to move between the two rollers 23, so that after the two rollers 23 are placed on the overhead ground wire 231, the two rollers 23 are located above the overhead ground wire 231, and the clamping wheel 34 can be located below the overhead ground wire 231, thereby clamping the overhead ground wire 231, thereby ensuring that the self-propelled vehicle can stably move on the overhead ground wire 231, and the structural design is more reasonable.

[0035] Specifically, one end of the hook 4 is hinged on the mounting plate 21, so that the hook 4 can rotate on the mounting plate 21, thereby realizing the adjustment of the extension direction of the hook 4, that is, when the composite optical cable ground wire to be replaced is subsequently dragged by the hook 4, it can adapt to the angle change requirement between the composite optical cable ground wire and the horizontal plane caused by the walking of the self-propelled vehicle, and the structural design is more reasonable.

[0036] Specifically, the generator 5 is installed below the cross bar 12. At this time, the generator 5 is electrically connected to the travel drive motor 24, that is, the travel drive motor 24 is powered by the generator 5 to maintain the normal operation of the travel drive motor 24. Preferably, the generator 5 is a diesel generator 5, so that the self-propelled vehicle has its own power generation device and does not need to arrange additional power supply lines. It has better portability and is more suitable for working in an environment without electricity at high altitudes. The structural design is more reasonable.

[0037] Figure 3 This is a combined installation diagram of a lifting assembly, a push assembly and an unlocking assembly according to a preferred embodiment of the present invention. Figures 1 to 3 As shown, the lifting assembly 6 is arranged between the other end of the cross bar 12 and one end of the mounting plate 21. At this time, if the travel drive motor 24 is damaged, when the lifting assembly 6 is in action, the lifting assembly 6 can push the mounting plate 21 to rotate around the axis of the connecting pin 22, so that one end of the mounting plate 21 can be tilted or reset. When one end of the mounting plate 21 is tilted, the roller 23 on the end is separated from the overhead ground wire 231, reducing the friction of the driving wheel assembly 2 on the overhead ground wire 231. When the mounting plate 21 is reset, the separated roller 23 can press the overhead ground wire 231, thereby ensuring the friction when the self-propelled vehicle moves automatically, which provides conditions for appropriately reducing the friction later so that the self-propelled vehicle can move in the opposite direction.

[0038] Specifically, the pushing assembly 7 is arranged between the swing shaft 32 and the cross bar 12. At this time, the pushing assembly 7 can push the swing shaft 32 of the clamping assembly 3 to move horizontally on the cross bar 12, so that the clamping assembly 3 can be close to one of the rollers 23. Preferably, the pushing assembly 7 moves the clamping assembly 3 toward the side of the roller 23 that is not raised, so that the clamping assembly 3 can cooperate with the roller 23 to clamp the overhead ground wire 231, thereby avoiding the problem of the self-propelled vehicle slipping on the overhead ground wire 231 due to excessive reduction of friction, and having higher safety assurance.

[0039] Specifically, the unlocking component 8 is arranged on the mounting plate 21 and acts on the self-locking structure 26. The unlocking component 8 is used to open the self-locking structure 26, so that when the self-propelled vehicle needs to be recovered in reverse, the self-locking structure 26 can be unlocked, so that the roller 23 can rotate in the reverse direction, thereby avoiding the problem that the roller 23 can only rotate in one direction and the self-propelled vehicle cannot move in the reverse direction. The rotation state of the roller 23 is maintained during the reverse movement, avoiding the problem of wear of the roller 23, and the structural design is more reasonable.

[0040] More specifically, a generator frame 51 is provided at the bottom of the cross bar 12. At this time, the upper end of the generator frame 51 is rotatably installed on the bottom of the cross bar 12, so that the generator frame 51 can swing at the bottom of the cross bar 12, thereby adapting to the angle change when the self-propelled vehicle climbs a slope, maintaining the generator frame 51 in a vertical state at all times, and the generator 5 is fixedly installed on the generator frame 51, thereby maintaining the generator 5 in a vertical state at all times, ensuring the stability of the operation of the generator 5, and the structural design is more reasonable.

[0041] More specifically, the lifting assembly 6 includes a lifting screw rod 61, a rotating nut 62 and a rotating motor 63. At this time, the rotating nut 62 is rotatably installed at the other end of the cross bar 12. Preferably, a bearing is provided between the rotating nut 62 and the cross bar 12. At the same time, the rotating motor 63 is power-connected to the rotating nut 62, so that the rotating motor 63 can drive the rotating nut 62 to rotate on the cross bar 12. At the same time, the upper end of the lifting screw rod 61 is hinged to one end of the mounting plate 21, and the lower end of the lifting screw rod 61 is threadedly connected to the rotating nut 62, so that when the rotating nut 62 rotates, the lifting screw rod 61 can move along its axial direction, thereby realizing pushing up or pulling down the mounting plate 21 and realizing the tilting operation of the driving wheel assembly 2.

[0042] More specifically, a horizontal slide groove 121 is provided on the cross bar 12, and at the same time, a slider 122 is slidably provided in the slide groove 121, one end of the swing shaft 32 is fixedly installed on the slider 122, and the pushing assembly 7 is connected to the slider 122, so that the pushing assembly 7 can push the slider 122 to move in the slide groove 121, thereby realizing the movement of the swing shaft 32 between the two rollers 23 to meet the movement requirement of approaching one of the rollers 23, so that after one of the rollers 23 is tilted, the clamping wheel 34 can approach the other roller 23 that is not tilted and clamp the overhead ground wire 231, so as to avoid the problem of slipping caused by excessive reduction of friction, and the structural design is more reasonable.

[0043] More specifically, the push assembly 7 further includes a rotary connector 71, a first connecting rod 72 and a second connecting rod 73. At this time, the rotary connector 71 is installed at the lower end of the lifting screw 61, so that when the lifting screw 61 rotates, the rotary connector 71 can remain original, and the lifting screw 61 and the rotary connector 71 can rotate relative to each other, which provides conditions for the rotary connector 71 to cooperate with the first connecting rod 72 to move later. In addition, a protruding first rotating pin 711 is provided on the rotating connecting head 71, the middle part of the first connecting rod 72 is hinged on the cross rod 12, and the lower end of the first connecting rod is provided with a first sliding hole 721 along its length direction. The first rotating pin 711 is inserted into the first sliding hole 721, that is, when the lifting screw rod 61 makes an upward movement and lifts a roller 23, the first rotating pin 711 rises with the lifting screw rod 61, so that the first rotating pin 711 can both rotate and slide in the first sliding hole 721, so that the first connecting rod can swing around its middle part, providing conditions for subsequently pushing the clamping assembly 3 to move toward the side of the roller 23 that is not lifted. At the same time, the upper end of the first connecting rod extends to the top of the slider 122, and at the same time, one end of the second connecting rod is hinged to the upper end of the first connecting rod, so that the first connecting rod can drive the second connecting rod to deflect, and a strip-shaped second sliding hole 731 is opened in the middle of the second connecting rod along its length direction, and a second rotating pin 123 is arranged in the second sliding hole 731. One end of the second rotating pin 123 is fixedly installed on the cross bar 12, so that the second rotating pin 123 can rotate and slide in the second sliding hole 731 to meet the movement requirements of the second connecting rod. At the same time, the other end of the second connecting rod is hingedly connected to the slider 122, so that the second connecting rod 7 3 can push the slider 122 to move in the slide groove 121, so as to push the clamping assembly 3 toward the side of the roller 23 that is not tilted, so that the clamping wheel 34 can further press the overhead ground wire 231 onto the roller 23 that is not tilted. That is, when the roller 23 is tilted and the friction force is reduced and the clamping wheel 34 cannot press the overhead ground wire 231, the clamping assembly 3 can be pushed toward the side of the roller 23 that is not tilted, so that the clamping assembly 3 can press the overhead ground wire 231 between the roller 23 that is not tilted and the clamping wheel 34 again, thereby avoiding the problem of excessive decrease in friction force, and still maintaining the friction force required for normal anti-skid, and the structural design is more reasonable.It is worth pointing out that since the pushing assembly 7 and the lifting assembly 6 work synchronously, that is, when a roller 23 of the driving wheel assembly 2 is tilted, the clamping assembly 3 has synchronously moved toward the side of the roller 23 that is not tilted, and the overhead ground wire 231 itself has a certain hardness and toughness, and its two ends are in a pulled state, so that it will not undergo a large deformation, thereby preventing the rocker arm 31 in the clamping assembly 3 from rebounding under the action of the first torsion spring 33, causing the clamping wheel 34 to be unable to clamp the overhead ground wire 231, and can basically maintain the original deflection angle of the rocker arm 31. The slider 122 pushes the rocker arm 31 to move toward the side of the roller 23 that is not tilted. At this time, the rocker arm 31 will be further pressed, making the deflection angle of the rocker arm 31 larger, thereby ensuring that the rocker arm 31 can support the clamping wheel 34 to stably press the overhead ground wire 231, and the safety and reliability are higher.

[0044] More specifically, the self-locking structure 26 in the driving wheel assembly 2 includes a ratchet 261, a pawl 262, a rotating shaft 264 and a second torsion spring 263. The ratchet 261 is coaxially mounted on a roller 23 to achieve synchronous movement of the ratchet 261 and the corresponding roller 23. One end of the rotating shaft 264 is fixed to the mounting plate 21 and is located beside the ratchet 261. At the same time, the pawl 262 is rotatably mounted on the rotating shaft 264 and arranged toward the ratchet 261, so that the pawl 262 can contact or move away from the ratchet 261 when rotating around the rotating shaft 264. At the same time, the second torsion spring 263 is The spring 263 is installed on the rotating shaft 264 on which the pawl 262 rotates, and the two ends of the second torsion spring 263 are respectively pressed against the pawl 262 and the mounting plate 21, so that the second torsion spring 263 can apply a force toward the ratchet 261 to the pawl 262, so that the pawl 262 can contact the ratchet 261, thereby limiting the rotation direction of the ratchet 261 and maintaining the unidirectional rotation of the roller 23 on which the ratchet 261 is installed, thereby preventing the self-propelled vehicle from rotating in the opposite direction and causing slipping when it moves automatically, and preventing the occurrence of problems such as the ground wire of the composite optical cable being unable to be dragged, which is safer and more reliable.

[0045] More specifically, the unlocking component 8 acting on the self-locking structure 26 includes a pulley 81 and a cable 82. At this time, the pulley 81 is rotatably installed on the mounting plate 21, and the pulley 81 is located in an upper position beside the pawl 262, and one end of the cable 82 is fixed to the claw of the pawl 262, and the other end of the cable 82 is wound around the pulley 81 and extends downward to the upper end of the first connecting rod, so that when the upper end of the first connecting rod 72 is deflected downward under the drive of the lifting screw 61, the first connecting rod 72 can pull the pawl 262 through the cable 82, so that the pawl 262 overcomes the force of the second torsion spring 263 and separates from the ratchet 261, so that the ratchet 261 can rotate freely, so that the two rollers 23 are not restricted by the ratchet 261, which provides conditions for the subsequent rollers 23 to rotate in the opposite direction to realize the return of the self-propelled vehicle. It is worth pointing out that an arc-shaped damping plate 211 is arranged outside the axle of the roller 23 that is not equipped with the ratchet 261. The damping plate 211 is an elastic plate. One end of the damping plate 211 is fixed on the mounting plate 21, and the other end is connected to a steel wire rope 212. At the same time, the steel wire rope 212 is also connected to the upper end of the first connecting rod 72, so that when the upper end of the first connecting rod 72 deflects downward under the drive of the lifting screw 61, the steel wire rope 212 can pull the damping plate 211 toward the axle of the corresponding roller 23 and press the roller 23, so that the rotation of the roller 23 has a certain resistance, thereby preventing the roller 23 from rotating freely and causing slipping, and providing higher safety assurance.

[0046] More specifically, a buffer component 41 is also arranged between the hook 4 and the mounting plate 21. At this time, the buffer component 41 includes a pull rod 411, a tension spring 412 and an anti-collision wheel 413. One end of the pull rod 411 is hinged on the mounting plate 21, and the hook 4 is installed on the other end of the pull rod 411, that is, the hook 4 is connected to the mounting plate 21 through the pull rod 411. At the same time, one end of the tension spring 412 is connected to the end of the pull rod 411 on which the hook 4 is installed, and the other end of the tension spring 412 is connected to the lower end of the cross bar 12 or the vertical bar 11, so that the deflection of the pull rod 411 on the mounting plate 21 will be buffered by the tension spring 412, and the safety is higher. In addition, the anti-collision wheel 413 is rotatably installed on the pull rod 411 and is located below the roller 23, so that after the pull rod 411 is swung to a certain angle, the anti-collision wheel 413 can contact the overhead ground wire 231 below the roller 23. The anti-collision wheel 413 is used for guidance and friction reduction, which can not only reduce motion interference but also prevent structural damage, and the structural design is more reasonable.

[0047] More specifically, a bayonet 111 is provided at the upper end of the vertical pole 11, and the opening of the bayonet 111 is communicated with the outside, and one end of the connecting pin 22 is inserted into the bayonet 111. At the same time, a limiting bolt 112 is threadedly installed at the opening of the bayonet 111, and one end of the limiting bolt 112 extends into the bayonet 111 and abuts against the connecting pin 22, which can facilitate the installation of the connecting pin 22 in the driving wheel assembly 2 on the vertical pole 11, and can also prevent the connecting pin 22 from falling out through the limiting bolt 112, which has higher safety. In addition, it can also ensure the rotation ability of the connecting pin 22, adapt to the climbing requirements of the self-propelled vehicle and the tilting requirements of the roller 23, and the structural design is more reasonable.

[0048] More specifically, the generator frame 51 is also provided with a controller 9, which is electrically connected to the generator 5, the travel drive motor 24 and the rotary motor 63. At the same time, the controller 9 is provided with a control switch, so that the operator can manually control the operation of the self-propelled vehicle through the control switch. In addition, the controller 9 is communicatively connected with a remote controller, so that the operator can also remotely control the operation of the self-propelled vehicle through the remote controller, which is more convenient to use and more convenient to operate.

[0049] More specifically, a handle 35 is also provided on the cross bar 12. At this time, one end of the handle 35 is hinged on the cross bar 12 and fixedly connected to the rocker arm 31, and a rotating rod 351 is provided on the other end of the handle 35, that is, the operator can control the rotation of the handle 35 through the rotating rod 351, so that the rocker arm 31 can be swung through the handle 35 to adjust the distance between the clamping wheel 34 and the roller 23, thereby facilitating the installation of the roller 23 on the overhead ground wire 231, and the structural design is more reasonable.

[0050] More specifically, when the lifting assembly 6 moves and causes a roller 23 to be lifted, the lifted roller 23 is only lifted a small amount so that the roller 23 can be separated from the overhead ground wire 231, so that the rim of the lifted roller 23 can still contact the overhead ground wire 231, so that the lifted roller 23 can serve as a guide structure, maintaining stability unchanged, and the structural design is more reasonable.

[0051] When the self-propelled vehicle moves on the overhead ground wire 231 to between the two tower ends, if the travel drive motor 24 is damaged, the lifting assembly 6 can be controlled to move, so that the lifting screw rod 61 pushes up one end of the mounting plate 21 to make a roller 23 tilt up, which appropriately reduces the friction between the driving wheel assembly 2 and the overhead ground wire 231. At the same time, the pushing assembly 7 can synchronously push the clamping assembly 3 toward the side of the roller 23 that is not tilted, so that the clamping assembly 3 can be closer to the roller 23 that is not tilted, so that the clamping wheel 34 can press the overhead ground wire 231 against the roller 23 that is not tilted, thereby preventing the problem of excessive reduction in friction between the driving wheel assembly 2 and the overhead ground wire 231 after tilting, and still maintaining It can bear the friction force of the composite optical cable ground wire to prevent the self-propelled vehicle from slipping. In addition, the cable 82 in the unlocking component 8 can also simultaneously unlock the self-locking structure 26 of the pawl 262 and the ratchet 261, so that the roller 23 can rotate in the opposite direction. In this process, the wire rope 212 can also pull the damping plate 211 to press the axle of the roller 23 that is not lifted, so that the roller 23 that is not lifted has a certain rotation resistance, which also prevents the self-propelled vehicle from slipping in the opposite direction. At this time, the operator can pull the self-propelled vehicle back to the tower end through the composite optical cable ground wire, without the need to manually move from the overhead ground wire 231 to the faulty self-propelled vehicle for auxiliary operation, which has higher safety protection and more convenient operation.

[0052] The self-propelled vehicle capable of returning midway provided in the present embodiment comprises a main support 1, a driving wheel assembly 2, a clamping assembly 3, a hook 4, a generator 5, a lifting assembly 6, a pushing assembly 7 and an unlocking assembly 8; by arranging the lifting assembly 6, the pushing assembly 7 and the unlocking assembly 8 on the main support 1, it is possible to respectively realize the lifting of one end of the double rollers in the driving wheel assembly 2, the clamping of the overhead ground wire 231 and the unlocking of the self-locking structure 26 on the double rollers, which can not only appropriately reduce the friction force, but also prevent the safety problem caused by slipping during the return process due to excessive reduction of the friction force. In addition, the restriction of the self-locking structure 26 on the unidirectional rotation of the roller 23 is eliminated, so that the roller 23 can rotate in the reverse direction, thereby facilitating the operator to pull the self-propelled vehicle back in the reverse direction, and preventing the self-propelled vehicle from stopping between the two tower ends due to damage of the travel drive motor 24. There is no need for manual operation to move from the overhead ground wire 231 to the stagnant position for auxiliary operation, which saves time and effort, is safer, and is conducive to the use and promotion of self-propelled vehicles.

[0053] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-propelled vehicle capable of returning midway, characterized in that: include: A main support, the main support comprising a vertical pole and a horizontal pole, the horizontal pole is arranged horizontally, and the vertical pole is arranged vertically and the lower end of the vertical pole is fixed to one end of the horizontal pole; A driving wheel assembly, the driving wheel assembly comprising a mounting plate, a connecting pin, a double roller and a travel driving motor, the connecting pin being protrudingly mounted on the middle of the mounting plate, the connecting pin being rotatably mounted on the upper end of the vertical rod, two rollers of the double rollers being respectively mounted on the two ends of the mounting plate and connected by a toothed belt, and a self-locking structure being provided between one of the rollers and the mounting plate, and the travel driving motor being mounted on one end of the mounting plate and being dynamically connected to the roller at the end; A clamping assembly, the clamping assembly comprising a swing rod, a swing shaft, a first torsion spring and a clamping wheel, one end of the swing shaft is mounted on the cross bar, the lower end of the swing rod is hinged on the swing shaft, the first torsion spring is arranged between the swing rod and the swing shaft, and the upper end of the swing rod extends between the two rollers and is rotatably mounted with the clamping wheel; A hook, one end of which is hinged to the mounting plate; A generator, the generator is installed below the cross bar, and the generator is electrically connected to the travel drive motor; A lifting component, the lifting component is arranged between the other end of the cross bar and one end of the mounting plate, and pushes one end of the mounting plate to tilt up or reset; A pushing assembly, the pushing assembly is arranged between the swing shaft and the cross bar, and pushes the swing shaft to move horizontally on the cross bar; An unlocking component, which is disposed on the mounting plate and acts on the self-locking structure; The lifting assembly includes a lifting screw, a rotating nut and a rotating motor. The rotating nut is rotatably mounted on the other end of the cross bar. The rotating motor is dynamically connected to the rotating nut. The upper end of the lifting screw is hinged to one end of the mounting plate. The lower end of the lifting screw is threadedly connected to the rotating nut. The crossbar is provided with a horizontal slide groove, a slider is slidably arranged in the slide groove, one end of the swing shaft is fixedly mounted on the slider, and the push assembly is connected to the slider; The pushing assembly comprises a rotating connecting head, a first connecting rod and a second connecting rod, the rotating connecting head is installed at the lower end of the lifting screw rod, and a protruding first rotating pin is arranged on the rotating connecting head, the middle part of the first connecting rod is hinged on the cross rod, and the lower end of the first connecting rod is provided with a first sliding hole in the shape of a strip along its length direction, the first rotating pin is inserted in the first sliding hole, and at the same time, the upper end of the first connecting rod extends above the sliding block, one end of the second connecting rod is hinged with the upper end of the first connecting rod, and the middle part of the second connecting rod is provided with a second sliding hole in the shape of a strip along its length direction, and a second rotating pin is arranged in the second sliding hole, one end of the second rotating pin is fixedly installed on the cross rod, and the other end of the second connecting rod is hingedly connected to the sliding block; The self-locking structure includes a ratchet, a pawl, a rotating shaft and a second torsion spring, wherein the ratchet is coaxially mounted on one of the rollers, one end of the rotating shaft is fixed to the mounting plate and is located beside the ratchet, the pawl is rotatably mounted on the rotating shaft and arranged toward the ratchet, the second torsion spring is mounted on the rotating shaft on which the pawl rotates, and both ends of the second torsion spring are respectively pressed against the pawl and the mounting plate; The unlocking assembly includes a pulley and a cable. The pulley is rotatably mounted on the mounting plate and is located above and beside the pawl. One end of the cable is fixed to the claw of the pawl, and the other end of the cable is wound around the pulley and extends downward to the upper end of the first connecting rod.

2. The self-propelled vehicle capable of returning midway according to claim 1, characterized in that: It also includes a generator frame, the upper end of which is rotatably mounted on the bottom of the cross bar, and the generator is fixedly mounted on the generator frame.

3. The self-propelled vehicle capable of returning midway according to claim 1, characterized in that: A buffer assembly is arranged between the hook and the mounting plate, and the buffer assembly includes a pull rod, a tension spring and an anti-collision wheel. One end of the pull rod is hinged to the mounting plate, and the hook is mounted on the other end of the pull rod. One end of the tension spring is connected to the end of the pull rod on which the hook is mounted, and the other end of the tension spring is connected to the lower end of the cross bar or the vertical bar. The anti-collision wheel is rotatably mounted on the pull rod and is located below the roller.

4. The self-propelled vehicle capable of returning midway according to claim 1, characterized in that: A bayonet is provided at the upper end of the vertical rod, and one end of the connecting pin is inserted into the bayonet. At the same time, a limiting bolt is threadedly installed at the opening of the bayonet, and one end of the limiting bolt extends into the bayonet and abuts against the connecting pin.

5. The self-propelled vehicle capable of returning midway according to claim 2, characterized in that: It also includes a controller, which is arranged on the generator frame, and is electrically connected to the generator, the travel drive motor and the rotating motor. At the same time, a control switch is arranged on the controller, and the controller is communicatively connected to a remote controller.

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