Tree cutting auxiliary device for overhead distribution line

Abstract

The present application relates to a kind of distribution network overhead line tree cutting complete auxiliary device, including telescopic rod and the support clamp and clamping structure being set at the both ends of telescopic rod;Support clamp includes U-shaped clamp, the both sides of the open end of U-shaped clamp are movably connected with movable plate by first pivot, and the side wall of U-shaped clamp is provided with limit plate;When the opening of U-shaped clamp is upward, movable plate hides to the inside of U-shaped clamp under the action of gravity;When the opening of U-shaped clamp is downward, movable plate rotates to abut with limit plate under the action of gravity, when movable plate unidirectionally closes the opening of U-shaped clamp;The present application simultaneously has ground support and branch pincer-shaped clamp two kinds of modes, reduces the number of tools carried outside, can be flexibly adjusted according to the mode required by the mode of on-site operation environment, and simple and practical, easy to install, can effectively improve the working efficiency and accuracy of distribution network overhead line tree cutting.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pruning, in particular to a complete auxiliary device for cutting trees on distribution network overhead lines. BACKGROUND

[0002] When trees grow too high or branches grow too long, they are likely to contact the distribution network overhead lines, causing line short circuit, grounding fault and other problems, and further causing line tripping and power outage. By cutting trees and pruning branches, the interference of trees on the line can be effectively avoided, the occurrence of line faults can be reduced, and the stable supply of power on the distribution network overhead line can be ensured.

[0003] Because the output torque is not uniform during tree cutting, the existing pruning tools cannot maintain a stable working output point during tree cutting, so the operator needs to exert a lot of force to maintain the position during tree cutting, and even more, the operator is likely to accidentally damage the insulation layer of the line conductor, resulting in time-consuming and labor-consuming tree cutting work and a certain degree of danger.

[0004] Therefore, it is usually necessary to set up an auxiliary support device on site for support, select an auxiliary rod type according to the actual operation site tree growth, and cooperate with the tree cutting device for operation. The existing auxiliary support devices usually have two types, one is a ground support type tree cutting fixed support auxiliary device, and the other is a branch pincer type clamp type tree cutting fixed support auxiliary device. The large number of types results in the need to carry more tools.

[0005] The purpose of the present application is to design an auxiliary support device with both ground support type and branch pincer type clamp type. SUMMARY

[0006] In view of the shortcomings of the prior art, the present application provides a complete auxiliary device for cutting trees on distribution network overhead lines to solve the above problems.

[0007] The present application provides the following technical solutions:

[0008] A complete auxiliary device for cutting trees on distribution network overhead lines, comprising a telescopic rod and a support clamp and a clamping structure arranged at both ends of the telescopic rod.

[0009] The support clamp comprises a U-shaped clamp, the two sides of the open end of the U-shaped clamp are movably connected with movable plates through first rotating shafts, and the side wall of the U-shaped clamp is provided with a limiting plate.

[0010] When the opening of the U-shaped clamp is upward, the movable plates are hidden inside the U-shaped clamp under the action of gravity.

[0011] When the opening of the U-shaped clamp is downward, the movable plates are rotated to abut against the limiting plate under the action of gravity, and at this time the movable plates unidirectionally close the opening of the U-shaped clamp.

[0012] Preferably, one side of the U-shaped clamp away from the opening is provided with a top plate, the limiting plate is slidably connected to the side wall of the U-shaped clamp along the rotating axis of the movable plate, and the limiting plate and the top plate are connected through a pull rope.

[0013] Preferably, the side wall of the U-shaped clamp is provided with a first sliding groove, the top plate is slidably connected to the side wall of the U-shaped clamp away from the opening in the first sliding groove, and a return spring is arranged between the U-shaped clamp and the limiting plate.

[0014] Preferably, the clamping structure comprises a U-shaped frame with an opening facing the side, and the opening of the U-shaped frame is movably connected with a baffle through a second rotating shaft.

[0015] Preferably, the inner top wall of the U-shaped frame is movably connected with a pressing plate, a push rod is linearly slidably connected to the U-shaped frame, the push rod and the pressing plate are connected through a connecting rod, the outer side wall of the second rotating shaft is uniformly provided with a plurality of clamping grooves along the circumference, and the end of the push rod is inserted into the clamping groove to fix the second rotating shaft.

[0016] Preferably, the telescopic rod comprises a first rod and a second rod which are linearly slidably connected, a gear is mounted on the first rod through an adjustable one-way wheel assembly, a rack part is arranged on the second rod along the length direction, and the rack part and the gear are engaged.

[0017] Preferably, the adjustable one-way wheel assembly comprises a third rotating shaft, a first one-way wheel and a second one-way wheel which are sleeved on the third rotating shaft, the gear is 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 wall of the first one-way wheel and the second one-way wheel is provided with an internal spline groove, the third rotating shaft moves along the axial direction to control one group of external spline teeth and internal spline groove to engage, and the other group of external spline teeth and internal spline groove to separate, and the one-way rotation directions of the first one-way wheel and the second one-way wheel are opposite.

[0018] Preferably, the first rod is provided with a second sliding groove along the length direction, a counterweight is slidably connected in the second sliding groove, the counterweight has magnetism, and the end of the third rotating shaft has magnetism.

[0019] Preferably, the first rod and the second rod are made of insulating materials.

[0020] Preferably, the supporting clamp is mounted on the end of the telescopic rod through a universal joint.

[0021] The present application has the following beneficial technical effects:

[0022] The application has both ground support and branch pincer clamping modes, reduces the number of tools carried outside, can flexibly adjust and select the required mode according to the field operation environment, is simple and practical, easy to install, and can effectively improve the work efficiency and accuracy of tree cutting of distribution network overhead line. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic diagram of the ground support mode of the application;

[0024] Figure 2 is a schematic diagram of the branch pincer clamping mode of the application;

[0025] Figure 3 is a schematic diagram of the support clamp structure in the ground support mode of the application;

[0026] Figure 4 is a schematic diagram of the clamp structure in the branch pincer clamping mode of the application;

[0027] Figure 5 is a schematic diagram of the clamping structure of the application;

[0028] Figure 6 is a schematic diagram of the telescopic rod structure of the application;

[0029] Figure 7 is a schematic diagram of the counterweight and third rotating shaft cooperation of the application.

[0030] The reference signs in the drawings are:

[0031] 1, telescopic rod; 2, universal joint; 3, support clamp; 4, clamping structure;

[0032] 11, first rod; 12, second rod; 13, rack part; 14, gear; 15, second sliding groove; 16, counterweight; 17, third rotating shaft; 18, first one-way wheel; 19, second one-way wheel;

[0033] 31, U-shaped clamp; 32, first rotating shaft; 33, movable plate; 34, limiting plate; 35, first sliding groove; 36, top plate; 37, pull rope;

[0034] 41, U-shaped frame; 42, second rotating shaft; 43, baffle; 44, push rod; 45, connecting rod; 46, pressing plate. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0036] Example:

[0037] A complete set of auxiliary devices for tree felling on overhead power distribution lines, such as Figures 1-7 As shown, it includes:

[0038] Includes a telescopic rod 1, one end of which is equipped with a support clamp 3 via a universal joint 2. The support clamp 3 can move freely within a set angle range via the universal joint 2. The other end of the telescopic rod 1 is equipped with a clamping structure 4.

[0039] Telescopic rod 1 can be a multi-section telescopic rod as in the prior art, or as... Figure 6 , 7 As shown, the assembly includes a first rod 11 and a second rod 12. The length of the assembly is adjusted by a linear sliding fit between the first rod 11 and the second rod 12. A rack portion 13 is provided on the outer wall of the second rod 12 along its length direction. A third rotating shaft 17, a first one-way wheel 18, a gear 14, and a second one-way wheel 19 are coaxially arranged on the first rod 11. The first one-way wheel 18, the gear 14, and the second one-way wheel 19 can rotate 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 sleeved on the outer wall of the third rotating shaft 17. The third rotating shaft 17 can move axially relative to the first rod 11. A second sliding groove 15 is provided on the first rod 11 along its length direction and perpendicular to the axial direction of the third rotating shaft 17. A counterweight 16 is slidably connected in the second sliding groove 15. The counterweight 16 has a permanent magnet inside, so that its two ends are N pole and S pole respectively. A permanent magnet is built into the end of the third rotating shaft 17 near the counterweight 16.

[0040] The third rotating shaft 17 has external splines on both the left and right sides, and the first one-way wheel 18 and the second one-way wheel 19 have internal splines. The external splines and the internal splines are matched, and the first one-way wheel 18 and the second one-way wheel 19 rotate in opposite directions.

[0041] like Figure 3 , 4 As shown, the support clamp 3 includes a U-shaped clamp 31. The U-shaped clamp 31 has grooves on both opposite sides near its opening. Corresponding movable plates 33 are rotatably connected to each groove through a first rotating shaft 32. The first rotating shaft 32 is located in the middle of the movable plates 33. A first sliding groove 35 is provided on the side wall of the U-shaped clamp 31. The top plate 36 is located inside the U-shaped clamp 31 and moves linearly towards or away from the inner side wall of the U-shaped clamp 31 away from its opening under the guidance of the first sliding groove 35. A limiting plate 34 is linearly slidably connected to the outer side wall of the U-shaped clamp 31 along the axis of the first rotating shaft 32. A return spring (not shown in the figure) is connected between the limiting plate 34 and the outer side wall of the U-shaped clamp 31. A guide wheel is installed on the outer side wall of the U-shaped clamp 31. A pull rope 37 guided by the guide wheel is connected between one end of the limiting plate 34 and the top plate 36.

[0042] As shown in Figure 5 , 6 , the clamping structure 4 includes a U-shaped frame 41, a baffle 43 rotatably connected to one side of the opening of the U-shaped frame 41 through a second rotating shaft 42, a pressing plate 46 slidably connected to the side of the U-shaped frame 41 close to the baffle 43, spring sheets arranged between the pressing plate 46 and the inner side wall of the U-shaped frame 41, a push rod 44 linearly slidably connected to the inner side wall of the U-shaped frame 41, a connecting rod 45 hingedly connected to the right end of the push rod 44, the other end of the connecting rod 45 away from the push rod 44 being hingedly connected to the pressing plate 46, and a plurality of groups of clamping grooves evenly arranged on the outer side wall of the second rotating shaft 42 around the axis of the second rotating shaft 42, the clamping grooves being matched with the free end of the push rod 44.

[0043] Principle of use:

[0044] When the ground support mode is needed: as shown in Figure 1 , 3 , 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 falls and hides in the groove in the side wall of the U-shaped clamp 31 under the action of its own gravity, 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, and the pruning tool supported by the auxiliary device can be easily cut at the extreme angle and the branches of the tree with a bare trunk, thereby providing strong support for the stress point of the device for cutting the tree at the extreme angle and the tree with a bare trunk.

[0045] When the branch pincer clamping mode is needed: as shown in Figure 2 , 4 , the clamping structure 4 is located at the upper end of the telescopic rod 1, and the support clamp 3 is located at the lower end of the telescopic rod 1, first, the U-shaped frame 41 with the opening in the side wall is sleeved on the thicker branch, in this process, the baffle 43 can be rotated without interference, the pressing plate 46 is pressed against the upper surface of the branch, and the pressing plate 46 moves upward relative to the U-shaped frame 41 by a small distance under the action of the overall gravity of the auxiliary device and generates elastic force on the spring sheets, in the process of upward movement of the pressing 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 one of the clamping grooves of the second rotating shaft 42, thereby fixing the second rotating shaft 42, the fixation of the second rotating shaft 42 fixes the baffle 43 relative to the U-shaped frame 41, thereby closing the upper half of the opening of the U-shaped frame 41 by the baffle 43, and blocking the branch from leaving the inside of the U-shaped frame 41; thereby realizing the suspension of the auxiliary device on the branch.

[0046] When the branch needs to leave the inside of the U-shaped frame 41, an external force is first used to lift the auxiliary device upward, so that the pressing plate 46 is separated from the branch, the pressing plate 46 moves downward to reset under the action of the spring sheets, the push rod 44 moves rightward to reset and is pulled out from the clamping groove of the second rotating shaft 42, at this time, the baffle 43 can be freely rotated without hindering the branch from leaving;

[0047] At this time, the opening of the U-shaped clip 31 is facing downwards. Figure 4 As shown, the movable plate 33 rotates downward under its own gravity. One part of the movable plate 33 rotates to the opening of the U-shaped clamp 31, while the other part of the movable plate 33 abuts against the limiting plate 34 during its upward rotation. In this state, the two sets of movable plates 33 substantially close the opening of the U-shaped clamp 31. At this time, the rod of the pruning tool can push the two sets of movable plates 33 upward in one direction and move into the U-shaped clamp 31. After that, the rod of the pruning tool is restricted by the two sets of movable plates 33 and cannot leave the U-shaped clamp 31. At this time, the rod of the pruning tool is restricted inside the U-shaped clamp 31 for support, which facilitates subsequent pruning work and provides strong support for the force point of the tree cutting device under extreme angles and bare trunk types of trees.

[0048] When the horizontal height of the support clamp 3 is too high for manual operation, the pruning tool lever can be lifted upwards, pushing the top plate 36 upwards. The upward movement of the top plate 36, via the pull rope 37, causes the limiting plate 34 to move horizontally and compress the return spring, causing the limiting plate 34 to move away from the rotation path of the movable plate 33. Afterwards, the movable plate 33, no longer restricted, rotates at a certain angle under its own gravity, causing the movable plate 33 to partially rotate relative to the movement path of the limiting plate 34. Then, the pruning tool lever can push down to separate the two sets of movable plates 33 from the U-shaped clamp 31. During this process, the movable plate 33 continues to rotate relative to the limiting plate 34 and move away from its movement path. After the pruning tool lever is separated from the pressure plate 46, the limiting plate 34 is reset and moved back to the rotation path of the movable plate 33 under the push of the return spring.

[0049] like Figure 1 At that time, telescopic rod 1 can only extend, so that the pruning tool pressed on it will not shorten; such as Figure 2 At this time, telescopic pole 1 can only be shortened, so that the pruning tool it is carrying will not be extended;

[0050] like Figure 6 , 7 As shown, since both working states of the telescopic rod 1 are in the vertical state, the counterweight 16 in the second slide 15 moves downward to the lower limit under its own weight.

[0051] One of the states is as follows Figure 7As shown, the N-pole on 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 leftward relative to the first rod 11. At this time, the inner spline groove of the first one-way wheel 18 is engaged 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 disengaged from the outer spline teeth on the right part of the third rotating shaft 17. Thus, when the second rod 12 moves relative to the first rod 11 to adjust the length of the combination, the rack 13 drives the gear 14 to rotate, the gear 14 drives the third rotating shaft 17 to rotate, and the third rotating shaft 17 is limited to rotate in one direction by the first one-way wheel 18 during the rotation, so that the second rod 12 can only expand the length of the combination relative to the first rod 11 at this time.

[0052] When the telescopic rod 1 is inverted by rotating 180°, the counterweight 16 in the second sliding groove 15 moves downward to the lower limit under the action of its own gravity. At this time, the S-pole on the upper end of the counterweight 16 and the S-pole of the third rotating shaft 17 are magnetically repelled to each other, thereby driving the third rotating shaft 17 to move horizontally rightward relative to the first rod 11. At this time, the inner spline groove of the first one-way wheel 18 is disengaged 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. Thus, the third rotating shaft 17 is limited to rotate in one direction by the second one-way wheel 19 during the rotation, so that the second rod 12 can only shorten the length of the combination relative to the first rod 11 at this time.

[0053] The above-described embodiments only express the specific implementation of the present application, which is described in detail and specifically, but should not be understood as a limitation on the scope of the present application. It should be noted that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of protection of the present application.

Claims

1. A complete set of auxiliary devices for trimming trees of distribution overhead line, characterized in that, The utility model provides a telescopic rod (1) and the support clamp (3) and the clamping structure (4) of setting in telescopic rod (1) both ends, The support clamp (3) includes a U-shaped clamp (31), the opening end of the U-shaped clamp (31) is movably connected with a movable plate (33) through a first rotating shaft (32) on both sides, and a limiting plate (34) is arranged on the side wall of the U-shaped clamp (31). When the opening of the U-shaped clamp (31) faces upwards, the movable plate (33) hides into the inside of the U-shaped clamp (31) under the action of gravity. When the opening of the U-shaped clamp (31) faces downwards, the movable plate (33) rotates to abut against the limiting plate (34) under the action of gravity, and at this time, the movable plate (33) unidirectionally closes the opening of the U-shaped clamp (31). The clamping structure (4) includes a U-shaped frame (41) with an opening facing sideways, and a baffle (43) is movably connected with the opening of the U-shaped frame (41) through a second rotating shaft (42). A pressing plate (46) is movably connected to the inner top wall of the U-shaped frame (41) in an up-down manner, a push rod (44) is linearly and slidably connected to the inside of the U-shaped frame (41), the push rod (44) and the pressing plate (46) are connected through a connecting rod (45), a plurality of groups of clamping grooves are uniformly formed in the outer side wall of the second rotating shaft (42) in the circumferential direction, and the end of the push rod (44) is inserted into the clamping groove to fix the second rotating shaft (42).

2. The overhead line tree trimming auxiliary device of claim 1, wherein, A top plate (36) is arranged 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 rotating 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. The overhead line tree trimming auxiliary device of claim 2, wherein, A first sliding groove (35) is formed in the side wall of the U-shaped clamp (31), the top plate (36) slides in the first sliding groove (35) to approach or move away from the side wall of the U-shaped clamp (31) away from the opening thereof, and a return spring is arranged between the U-shaped clamp (31) and the limiting plate (34).

4. The overhead line tree trimming auxiliary device of claim 1, wherein, The telescopic rod (1) includes a first rod (11) and a second rod (12) that are linearly and slidably connected, a gear (14) is mounted on the first rod (11) through an adjustable one-way wheel assembly, and a rack portion (13) is arranged on the second rod (12) along the length direction thereof, and the rack portion (13) and the gear (14) are engaged.

5. The overhead line tree trimming auxiliary device of claim 4, wherein, The adjustable one-way wheel assembly includes a third rotating shaft (17), a first one-way wheel (18) and a second one-way wheel (19) that are 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 outer spline teeth, the inner side walls of the first one-way wheel (18) and the second one-way wheel (19) are each provided with an inner spline groove, the third rotating shaft (17) moves along the axial direction thereof to control one group of outer spline teeth and inner spline groove to engage, and the other group of outer spline teeth and inner spline groove to separate, and the one-way rotation directions of the first one-way wheel (18) and the second one-way wheel (19) are opposite.

6. The overhead line tree trimming auxiliary device of claim 5, wherein, The first rod (11) is provided with a second sliding groove (15) along the length direction, a counterweight (16) is freely connected in the second sliding groove (15), the counterweight (16) is magnetic, and the third rotating shaft (17) is magnetic at the end.

7. The overhead line tree trimming aid of claim 6, wherein the base is configured to be attached to a utility pole. The first rod (11) and the second rod (12) are made of insulating materials.

8. The overhead line tree trimming auxiliary device of claim 1, wherein, The support clamp (3) is installed at the end of the telescopic rod (1) through the universal joint (2).

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