Complete-set auxiliary device for cutting trees for overhead line of distribution network

Abstract

The invention relates to a distribution network overhead line tree cutting complete auxiliary device. The device comprises a telescopic rod, and a supporting clamp and a clamping structure which are arranged at two ends of the telescopic rod; the supporting clamp comprises a U-shaped clamp, the two sides of the opening end of the U-shaped clamp are movably connected with movable plates through first rotating shafts, and a limiting plate is arranged on the side wall of the U-shaped clamp. When the opening of the U-shaped clamp faces upwards, the movable plate is hidden to the inner side of the U-shaped clamp under the action of gravity; when the opening of the U-shaped clamp faces downwards, the movable plate rotates to abut against the limiting plate under the action of gravity, and at the moment, the opening of the U-shaped clamp is unidirectionally closed by the movable plate; the device has a ground supporting mode and a branch pincerlike clamping mode at the same time, the number of tools carried out is reduced, the needed mode can be flexibly adjusted and selected according to the field operation environment, and the device is simple, practical, convenient to install and capable of effectively improving the working efficiency and accuracy of distribution network overhead line tree cutting.

Description

Technical Field

[0001] The invention relates to the technical field of pruning, and in particular to a complete set of auxiliary devices for tree felling on overhead lines of a distribution network. Background Art

[0002] When trees grow too high or their branches are too long, they are likely to come into contact with overhead power lines, causing problems such as short circuits and grounding faults, which in turn cause line tripping and power outages. By cutting down trees and pruning them, we can effectively avoid the interference of trees on the lines, reduce the occurrence of line faults, and ensure the stable supply of power from the overhead power lines of the distribution network.

[0003] In the prior art, pruning tools are usually used for pruning, such as the "convenient and labor-saving branch pruning device" disclosed in patent announcement number CN106111922B, which can use an operating rod to prune branches around the overhead lines of the distribution network on the basis of having sufficient electrical insulation capacity;

[0004] However, due to the uneven output torque during the tree felling process, the existing pruning tools cannot maintain a stable working output point during the tree felling process, causing the operator to expend a lot of force to maintain the position during the tree felling process, and even more easily accidentally damaging the insulation layer of the line conductor, making the tree felling work time-consuming, labor-intensive and dangerous.

[0005] Therefore, it is usually necessary to set up an auxiliary support device on site for support. According to the actual tree growth conditions at the work site, the auxiliary pole type is selected in a targeted manner to cooperate with the tree felling device to work. There are usually two types of existing auxiliary support devices. One is a tree felling fixed support auxiliary device based on ground support, and the other is a tree felling fixed support auxiliary device based on branch clamp-shaped clamps. There are many types, resulting in more tools that need to be carried;

[0006] The purpose of this scheme is to design an auxiliary support device with both ground support type and branch clamp type. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a complete set of auxiliary devices for tree felling on overhead lines of a distribution network to solve the above problems.

[0008] The present invention provides the following technical solutions:

[0009] A complete set of auxiliary equipment for tree felling on overhead lines of a distribution network, comprising a telescopic rod and supporting clamps and a clamping structure arranged at both ends of the telescopic rod;

[0010] The supporting fixture comprises a U-shaped clamp, both sides of the opening end of the U-shaped clamp are movably connected with movable plates through a first rotating shaft, and the side wall of the U-shaped clamp is provided with a limit plate;

[0011] When the U-shaped clip is opened upward, the movable plate is hidden inside the U-shaped clip under the action of gravity;

[0012] When the U-shaped clip opening faces downward, the movable plate rotates under the action of gravity until it abuts against the limiting plate, and at this time, the movable plate closes the U-shaped clip opening in one direction.

[0013] Preferably, a top plate is provided on the side of the U-shaped clamp away from its opening, the limiting plate is slidably connected to the side wall of the U-shaped clamp along the rotation axis direction of the movable plate, and a pull rope is connected between the limiting plate and the top plate.

[0014] Preferably, a first sliding groove is provided on the side wall of the U-shaped clamp, and the top plate slides in the first sliding groove to approach or move away from the side wall of the U-shaped clamp away from its opening, and a return spring is provided between the U-shaped clamp and the limiting plate.

[0015] Preferably, the clamping structure comprises a U-shaped frame with an opening facing sideways, and the opening of the U-shaped frame is movably connected to a baffle via a second rotating shaft.

[0016] Preferably, the inner top wall of the U-shaped frame is movably connected to a pressure plate up and down, a push rod is linearly slidably connected inside the U-shaped frame, the push rod and the pressure plate are connected by a connecting rod, and the outer side wall of the second rotating shaft has multiple groups of grooves evenly arranged along its circumference, and the end of the push rod is inserted into the groove to fix the second rotating shaft.

[0017] Preferably, the telescopic rod comprises a first rod and a second rod which are linearly slidably matched, a gear is mounted on the first rod via an adjustable one-way wheel assembly, and a rack portion is provided on the second rod extending along its length, and the rack portion is meshed with the gear.

[0018] Preferably, the adjustable one-way wheel assembly includes a third rotating shaft, a first one-way wheel and a second one-way wheel sleeved on the third rotating shaft, the gear sleeved on the outer wall of the third rotating shaft, the outer wall of the third rotating shaft is provided with two groups of external spline teeth, the inner side walls of the first one-way wheel and the second one-way wheel are both provided with internal spline grooves, the third rotating shaft moves along its axial direction to control one group of external spline teeth and internal spline grooves to engage, and the other group of external spline teeth and internal spline grooves to separate, and the one-way rotation directions of the first one-way wheel and the second one-way wheel are opposite.

[0019] Preferably, a second slide groove is provided on the first rod along its length direction, a counterweight block is freely slidably connected in the second slide groove, the counterweight block is magnetic, and the end of the third rotating shaft is magnetic.

[0020] Preferably, the first rod and the second rod are made of insulating material.

[0021] Preferably, the support clamp is mounted on the end of the telescopic rod via a universal joint.

[0022] The present invention has the following beneficial technical effects:

[0023] The present invention has both ground support and branch clamp-type modes, which reduces the number of tools to be carried outside, and can flexibly adjust and select the required mode according to the on-site working environment. It is simple and practical, easy to install, and can effectively improve the work efficiency and accuracy of tree felling in distribution network overhead lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the ground support mode of the present invention;

[0025] Figure 2 This is a schematic diagram of the branch clamp-type mode of the present invention;

[0026] Figure 3 It is a schematic diagram of the supporting fixture structure in the ground supporting mode of the present invention;

[0027] Figure 4 This is a schematic diagram of the clamp structure of the present invention in the branch clamp-shaped clamping mode;

[0028] Figure 5 It is a schematic diagram of the clamping structure of the present invention;

[0029] Figure 6 It is a schematic diagram of the telescopic rod structure of the present invention;

[0030] Figure 7 It is a schematic diagram of the cooperation between the counterweight block and the third rotating shaft of the present invention.

[0031] The reference numerals in the figure are:

[0032] 1. Telescopic rod; 2. Universal joint; 3. Support fixture; 4. Clamping structure;

[0033] 11. first rod; 12. second rod; 13. rack; 14. gear; 15. second slide; 16. counterweight; 17. third rotating shaft; 18. first one-way wheel; 19. second one-way wheel;

[0034] 31. U-shaped clip; 32. first rotating shaft; 33. movable plate; 34. limiting plate; 35. first sliding groove; 36. top plate; 37. pull rope;

[0035] 41. U-shaped frame; 42. second rotating shaft; 43. baffle; 44. push rod; 45. connecting rod; 46. pressure plate. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example:

[0038] A complete set of auxiliary equipment for cutting trees on overhead lines of distribution network, such as Figure 1-7 As shown, including:

[0039] It includes a telescopic rod 1, one end of which is equipped with a support fixture 3 through a universal joint 2, and the support fixture 3 can move arbitrarily within a set angle range through the universal joint 2, and the other end of the telescopic rod 1 is equipped with a clamping structure 4;

[0040] The telescopic rod 1 can adopt the multi-section telescopic rod in the prior art, or Figure 6 , 7 As shown, it includes a first rod 11 and a second rod 12, and the first rod 11 and the second rod 12 are linearly slidably matched to achieve the length adjustment of the component, the outer wall of the second rod 12 is provided with a rack portion 13 along its length direction, and the first rod 11 is coaxially provided with a third rotating shaft 17, a first one-way wheel 18, a gear 14 and a second one-way wheel 19, the first one-way wheel 18, the gear 14 and the second one-way wheel 19 are rotatable relative to the first rod 11 but will not move axially, the first one-way wheel 18, the gear 14 and the second one-way wheel 19 are relatively sleeved on the outer wall of the third rotating shaft 17, the third rotating shaft 17 can move axially along the third rotating shaft 17 relative to the first rod 11, and a second sliding groove 15 is opened on the first rod 11 along its length direction and perpendicular to the axial direction of the third rotating shaft 17, a counterweight block 16 is slidably connected in the second sliding groove 15, and a permanent magnet is built in the counterweight block 16 so that its two ends are respectively N poles and S poles, and a permanent magnet is built in one end of the third rotating shaft 17 close to the counterweight block 16;

[0041] The third rotating shaft 17 is provided with external spline teeth on both the left and right parts, and the first one-way wheel 18 and the second one-way wheel 19 are provided with internal spline grooves. The external spline teeth and the internal spline grooves are adapted to each other, and the first one-way wheel 18 and the second one-way wheel 19 rotate in opposite directions.

[0042] like Figure 3 , 4As shown, the supporting clamp 3 includes a U-shaped clamp 31, and grooves are provided on opposite sides of the U-shaped clamp 31 near its opening, and corresponding movable plates 33 are rotatably connected in the grooves through a first rotating shaft 32, and the first rotating shaft 32 is relatively located in the middle of the movable plate 33, and a first sliding groove 35 is provided on the side wall of the U-shaped clamp 31, and the top plate 36 is located inside the U-shaped clamp 31 and linearly approaches or moves away from the inner side wall of the U-shaped clamp 31 away from the opening under the guidance of the first sliding groove 35, and the limiting plate 34 is linearly slidably connected to the outer side wall of the U-shaped clamp 31 along the axial direction of the first rotating shaft 32, and a return spring (not shown in the accompanying drawings) is connected between the limiting plate 34 and the outer side wall of the U-shaped clamp 31, and a guide wheel is installed on the outer side wall of the U-shaped clamp 31, and a pull rope 37 guided by the guide wheel is connected between one end of the limiting plate 34 and the top plate 36.

[0043] like Figure 5 , 6 As shown, the clamping structure 4 includes a U-shaped frame 41, which is rotatably connected to a baffle 43 on one side of the opening of the U-shaped frame 41 through a second rotating shaft 42, and a pressure plate 46 is slidably connected to the side of the U-shaped frame 41 close to the baffle 43, and a spring sheet is provided between the pressure plate 46 and the inner wall of the U-shaped frame 41, and a push rod 44 is linearly slidably connected to the inner wall of the U-shaped frame 41, and a connecting rod 45 is hinged at the right end of the push rod 44, and the other end of the connecting rod 45 away from the push rod 44 is hinged to the pressure plate 46, and a plurality of groups of card grooves are evenly opened on the outer wall of the second rotating shaft 42 around its axis, and the card grooves are adapted to the free ends of the push rod 44.

[0044] How it works:

[0045] When ground support mode is needed: Figure 1 , 3 As shown, the lower end of the telescopic rod 1 is placed on the bottom surface through the clamping structure. At this time, the opening of the U-shaped clamp 31 faces upward, and the movable plate 33 freely hangs down under the action of its own gravity and is hidden in the groove of the side wall of the U-shaped clamp 31. At this time, the movable plate 33 will not close the opening of the U-shaped clamp 31, and the rod of the pruning tool can be placed in the U-shaped clamp 31 for support. With the support of the auxiliary device, the pruning tool can save effort in cutting branches of trees with extreme angles and bare trunks, and provide strong support for the force bearing point of the tree cutting device under trees with extreme angles and bare trunks.

[0046] When you need to use the branch clamp mode: Figure 2 , 4As shown, the clamping structure 4 is located at the upper end of the telescopic rod 1, and the supporting clamp 3 is located at the lower end of the telescopic rod 1. First, the U-shaped frame 41 with an opening on the side wall is put on a thicker branch. During this process, the baffle 43 can rotate without interfering. The pressure plate 46 is relatively pressed on the upper surface of the branch. Under the action of the overall gravity of the auxiliary device, the pressure plate 46 moves upward a short distance relative to the U-shaped frame 41 and causes the spring sheet to generate elastic force. During the upward movement of the pressure plate 46, the connecting rod 45 drives the push rod 44 to move leftward, so that the left end of the push rod 44 is inserted into a slot of the second rotating shaft 42, thereby fixing the second rotating shaft 42. The fixation of the second rotating shaft 42 realizes the fixation of the baffle 43 relative to the U-shaped frame 41, so that the baffle 43 closes the upper half of the opening of the U-shaped frame 41, thereby preventing the branch from escaping from the inside of the U-shaped frame 41; thereby realizing the auxiliary device being suspended on the branch.

[0047] When the branch needs to be separated from the U-shaped frame 41, an external force is first used to lift the auxiliary device upward, so that the pressure plate 46 is separated from the branch. The pressure plate 46 moves downward and resets under the action of the spring sheet, so that the push rod 44 moves rightward and resets and is pulled out of the slot of the second rotating shaft 42. At this time, the baffle 43 can rotate freely without hindering the separation of the branch.

[0048] At this time, the opening of the U-shaped clip 31 is facing downward. Figure 4 As shown, the movable plate 33 rotates downward under the action of its own gravity, and a part of the movable plate 33 rotates to the opening of the U-shaped clamp 31, and the other part of the movable plate 33 abuts against the limit plate 34 during the upward rotation process; in this state, the two groups of movable plates 33 substantially close the opening of the U-shaped clamp 31, and at this time, the rod of the pruning tool can push the two groups of movable plates 33 upward in one direction to move into the U-shaped clamp 31, and then, the rod of the pruning tool is restricted by the two groups of movable plates 33 and cannot be separated from the U-shaped clamp 31. At this time, the rod of the pruning tool is restricted to the inside of the U-shaped clamp 31 to achieve support, which provides convenience for subsequent pruning work and provides strong support for the force points of the tree felling device under trees with extreme angles and bare trunks;

[0049] After the rod of the pruning tool is separated from the pressure plate 46, the limit plate 34 is reset and moved to the rotation path of the movable plate 33 under the push of the reset spring.

[0050] like Figure 1 When the telescopic rod 1 is extended, the pruning tool pressed thereon will not be shortened; Figure 2 When the telescopic rod 1 is in the state of being stretched, the telescopic rod 1 can only be shortened, so that the pruning tool mounted thereon will not be extended;

[0051] like Figure 6 , 7 As shown, since both working states of the telescopic rod 1 are vertical, the counterweight 16 in the second slide slot 15 moves downward to the lower limit position under the action of its own gravity;

[0052] One of the states is Figure 7 As shown, at this time, the N pole at the upper end of the counterweight 16 and the S pole of the third rotating shaft 17 are magnetically attracted to each other, thereby driving the third rotating shaft 17 to move horizontally to the left relative to the first rod 11. At this time, the inner spline groove of the first one-way wheel 18 is meshed with the outer spline teeth on the left part of the third rotating shaft 17, and the inner spline groove of the second one-way wheel 19 is separated from the outer spline teeth on the right part of the third rotating shaft 17. Therefore, when the second rod 12 moves relative to the first rod 11 to adjust its component length, the gear 14 is driven to rotate by the rack part 13, and the rotation of the gear 14 drives the third rotating shaft 17 to rotate. During the rotation of the third rotating shaft 17, it is restricted by the first one-way wheel 18 to rotate in one direction, so that the second rod 12 can only expand its component length relative to the first rod 11 at this time;

[0053] When the telescopic rod 1 rotates 180° and stands upside down, the counterweight 16 in the second slide groove 15 moves downward to the lower limit position under the action of its own gravity; at this time, the S pole at the upper end of the counterweight 16 and the S pole of the third rotating shaft 17 magnetically repel each other, thereby driving the third rotating shaft 17 to move horizontally to the right relative to the first rod 11. At this time, the inner spline groove of the first one-way wheel 18 is separated from the outer spline teeth on the left part of the third rotating shaft 17, and the inner spline groove of the second one-way wheel 19 is engaged with the outer spline teeth on the right part of the third rotating shaft 17. Therefore, the third rotating shaft 17 is restricted from rotating in one direction by the second one-way wheel 19 during its rotation, so that the second rod 12 can only shorten its length relative to the first rod 11 at this time.

[0054] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A complete set of auxiliary equipment for tree felling on overhead lines of distribution network, characterized in that: It comprises a telescopic rod (1) and a supporting clamp (3) and a clamping structure (4) arranged at both ends of the telescopic rod (1); The supporting fixture (3) comprises a U-shaped clamp (31), and movable plates (33) are movably connected to both sides of the opening end of the U-shaped clamp (31) via a first rotating shaft (32), and a limiting plate (34) is provided on the side wall of the U-shaped clamp (31); When the U-shaped clip (31) is opened upward, the movable plate (33) is hidden inside the U-shaped clip (31) under the action of gravity; When the opening of the U-shaped clip (31) faces downward, the movable plate (33) rotates under the action of gravity until it abuts against the limiting plate (34), and at this time, the movable plate (33) unidirectionally closes the opening of the U-shaped clip (31).

2. A complete set of auxiliary equipment for tree felling of distribution network overhead lines according to claim 1, characterized in that: A top plate (36) is provided on the side of the U-shaped clamp (31) away from the opening thereof, the limiting plate (34) is slidably connected to the side wall of the U-shaped clamp (31) along the rotation axis direction of the movable plate (33), and a pull rope (37) is connected between the limiting plate (34) and the top plate (36).

3. A complete set of auxiliary equipment for tree felling of distribution network overhead lines according to claim 2, characterized in that: The side wall of the U-shaped clip (31) is provided with a first sliding groove (35), and the top plate (36) slides in the first sliding groove (35) to approach or move away from the side wall of the U-shaped clip (31) away from its opening, and a return spring is provided between the U-shaped clip (31) and the limiting plate (34).

4. A complete set of auxiliary equipment for tree felling of distribution network overhead lines according to claim 1, characterized in that: The clamping structure (4) comprises a U-shaped frame (41) with an opening facing the side, and the opening of the U-shaped frame (41) is movably connected to a baffle (43) via a second rotating shaft (42).

5. A complete set of auxiliary equipment for tree felling of overhead lines in distribution network according to claim 4, characterized in that: The inner top wall of the U-shaped frame (41) is movably connected to a pressure plate (46) up and down, and a push rod (44) is linearly slidably connected inside the U-shaped frame (41). The push rod (44) and the pressure plate (46) are connected by a connecting rod (45). The outer side wall of the second rotating shaft (42) is evenly provided with a plurality of groups of grooves along its circumference, and the end of the push rod (44) is inserted into the groove to fix the second rotating shaft (42).

6. A complete set of auxiliary equipment for tree felling of distribution network overhead lines according to claim 1, characterized in that: The telescopic rod (1) comprises a first rod (11) and a second rod (12) which are linearly slidably matched, a gear (14) being mounted on the first rod (11) via an adjustable one-way wheel assembly, and a rack portion (13) extending along the length direction of the second rod (12), the rack portion (13) being meshed with the gear (14).

7. A complete set of auxiliary equipment for tree felling of overhead lines in distribution network according to claim 6, characterized in that: The adjustable one-way wheel assembly comprises a third rotating shaft (17), a first one-way wheel (18) and a second one-way wheel (19) sleeved on the third rotating shaft (17); the gear (14) is sleeved on the outer wall of the third rotating shaft (17); the outer wall of the third rotating shaft (17) is provided with two groups of external spline teeth; the inner side walls of the first one-way wheel (18) and the second one-way wheel (19) are both provided with internal spline grooves; the third rotating shaft (17) moves along its axial direction to control one group of external spline teeth and internal spline grooves to mesh, and the other group of external spline teeth and internal spline grooves to separate; the one-way rotation directions of the first one-way wheel (18) and the second one-way wheel (19) are opposite.

8. A complete set of auxiliary equipment for tree felling of overhead lines in distribution network according to claim 7, characterized in that: A second slide groove (15) is provided on the first rod (11) along its length direction, a counterweight block (16) is freely slidably connected in the second slide groove (15), the counterweight block (16) is magnetic, and the end of the third rotating shaft (17) is magnetic.

9. A complete set of auxiliary equipment for tree felling of distribution network overhead lines according to claim 6, characterized in that: The first rod (11) and the second rod (12) are made of insulating material.

10. A complete set of auxiliary equipment for tree felling of distribution network overhead lines according to claim 1, characterized in that: The supporting clamp (3) is mounted on the end of the telescopic rod (1) via a universal joint (2).

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