An insulating lifting cross arm on an insulating bucket arm truck

Abstract

The utility model relates to power construction equipment technical field discloses an insulating lifting cross arm on insulating bucket arm vehicle jib, including straight pole, crosspiece, adjusting mechanism and elevating system, the support platform of elevating system is fixed in straight pole bottom, and the connecting frame is set up in support platform rear side, and the front side fixed connection of straight pole has crosspiece, and the left and right sides of crosspiece all have the sliding sleeve that slides in connection, and the top fixed connection of sliding sleeve has the support, and adjusting mechanism is equipped in the intersection of crosspiece and straight pole, and the casing of adjusting mechanism is fixed in crosspiece rear side, motor no.

Description

Technical Field

[0001] This utility model relates to the field of power construction equipment technology, and in particular to an insulated lifting crossarm on the boom of an insulated bucket truck. Background Technology

[0002] In live-line work on power distribution networks, insulated bucket trucks are the main operating equipment. When performing live pole erection or crossarm replacement, insulated bucket trucks must use insulated crossarms to support and fix the conductors. Most existing insulated bucket truck auxiliary crossarms adopt a fixed structure design. The conductor supports on the insulated crossarms are welded or bolted to specific positions on the crossarm. The fixed position of the conductor supports makes it impossible to adjust the fixed spacing between conductors. Different voltage levels and different erection standards of lines have significantly different requirements for the phase-to-phase distance of conductors. Insulated crossarms with fixed spacing cannot adapt to diverse line conditions. Forcibly pulling the conductors to adapt to the fixed supports will cause uneven stress on the insulated crossarms, thereby compromising the mechanical stability of the insulated crossarms.

[0003] During the integrated operation of erecting live poles, there is a spatial conflict between the installation position of the new pole and the position of the original conductor. The operators must raise the original conductor to a sufficient height to leave a channel for the installation of the new pole. The existing insulated crossarm and the boom of the insulated bucket truck are rigidly connected. The vertical height adjustment of the insulated crossarm depends entirely on the overall lifting and lowering of the boom of the insulated bucket truck. The hydraulic system of the boom of the insulated bucket truck is not precise enough in terms of fine adjustment control and the boom has a large inertia. Relying on the overall lifting and lowering of the boom of the insulated bucket truck cannot achieve precise control of the conductor height. The swaying of the boom of the insulated bucket truck during the movement will cause the conductor to swing and thus cause the conductor to touch the new pole.

[0004] Therefore, this utility model proposes an insulated lifting crossarm on the boom of an insulated bucket truck to address the shortcomings of the prior art. Utility Model Content

[0005] In view of the problems in the existing technology that the fixed spacing of the conductors of the insulated crossarm is not adjustable and cannot adapt to diverse line conditions, and that the lack of independent lifting adjustment function seriously limits the flexibility and safety of on-site operations, this utility model aims to provide an insulated lifting crossarm on the boom of an insulated bucket truck with an improved structure that can effectively solve the above problems.

[0006] This utility model provides an insulated lifting crossarm for an insulated bucket truck boom, including a straight rod, a crossbar, an adjustment mechanism, and a lifting mechanism. The lifting mechanism includes a support platform and a connecting frame. The support platform is fixedly connected to the bottom of the straight rod, and the connecting frame is located on the rear side of the support platform. A crossbar is fixedly connected to the front side of the straight rod. Sliding sleeves are slidably connected to the left and right sides of the outer wall of the crossbar, and a bracket is fixedly connected to the top of the sliding sleeves. The adjustment mechanism is located at the intersection of the crossbar and the straight rod. The adjustment mechanism includes a housing, a motor, a gear, a rack, and an extension rod. The housing is fixedly connected to the rear side of the crossbar, and the motor is fixedly connected to the rear side of the housing. The gear is fixedly connected to the output end of the motor. Racks are slidably connected to the upper and lower sides of the inner wall of the housing. Both racks are meshed with the gear. An extension rod is fixedly connected to the side of the two racks that is away from each other. The end of the extension rod away from the rack is fixedly connected to the sliding sleeve.

[0007] Preferably, the adjusting mechanism further includes clamping block one, clamping block two, bolt one, and locking nut. Clamping block one is located on the front side where the horizontal bar and the vertical bar intersect, clamping block two is located on the rear side where the horizontal bar and the vertical bar intersect, the front end of clamping block two is inserted into the inside of clamping block one, bolt one passes through clamping block one and clamping block two, and locking nut is threadedly connected to the rear end of bolt one.

[0008] Preferably, the adjustment mechanism further includes a second bolt, with the rear end of the extension rod threadedly connected to the second bolt, and the front end of the second bolt passing through the extension rod and threadedly connected to the rear side of the sliding sleeve.

[0009] Preferably, the lifting mechanism further includes a slide rail, a motor, a lead screw, a slider, and a connecting plate. The slide rail is fixedly connected to the inner rear end of the connecting frame, the motor is fixedly connected to the bottom of the connecting frame, the lead screw is fixedly connected to the output end of the motor, the slider is threadedly connected to the outer wall of the lead screw, the rear end of the slider is slidably connected to the front side of the slide rail, and the connecting plate is fixedly connected between the slider and the support platform.

[0010] Preferably, the lifting mechanism further includes a mounting plate, a second slide rail, and a second slider. The mounting plate is fixedly connected to the front side of the connecting frame, the second slide rail is fixedly connected to the front side of the mounting plate, the second slider is slidably connected to the front side of the second slide rail, and the front end of the second slider is fixedly connected to the top of the rear side of the support platform.

[0011] Preferably, connecting blocks are fixedly connected to both the left and right sides of the outer wall of the crossbar, and connecting rods are rotatably connected to the inner side of the connecting blocks. A fixing block is fixedly connected to the lower middle part of the outer wall of the straight bar, and the end of the connecting rod away from the connecting block is rotatably connected to the front side of the fixing block.

[0012] Preferably, a limiting block is rotatably connected to one side of the rear end of the bracket, and a through hole is opened on one side of the limiting block, with a pin slidably connected to the inner wall of the through hole.

[0013] Preferably, the limiting block is configured to tilt upward on one side of the through hole when subjected to downward pressure, the limiting block covers the bracket entrance in the free state, and one end of the pin protrudes from the through hole and abuts against the bracket when the limiting block swings in the opposite direction.

[0014] This utility model has the following beneficial effects: 1. This utility model solves the problems of limited working space for live poles caused by the inability to adjust the fixed spacing of the conductors on existing insulated crossarms and the difficulty in fine-tuning the vertical position. It is achieved by setting an adjustment mechanism driven by a motor and a gear and rack transmission at the connection between the crossarm and the straight pole, and cooperating with a lifting mechanism at the bottom of the straight pole consisting of a motor-driven lead screw nut and double guide rails. It enables flexible adjustment of the safety distance between conductor phases according to the on-site working conditions, and realizes secondary adjustment of the overall height of the crossarm to effectively avoid interference with the installation of new poles, thus significantly improving the adaptability and construction efficiency of live work.

[0015] 2. This utility model solves the problems of existing conductor supports lacking reliable anti-fall protection, which can easily lead to safety accidents, and the crossarm body is prone to deformation under heavy loads. It achieves the effect of automatic locking after the conductor is hung to prevent accidental detachment, greatly improves the safety of high-altitude operations, effectively disperses the gravity load of the conductor, and enhances the overall structural strength and operational stability of the insulated lifting crossarm. Attached Figure Description

[0016] Figure 1 This is a perspective view of an insulated lifting crossarm on an insulated bucket truck boom proposed in this utility model; Figure 2 This is a side view of an insulated lifting crossarm on an insulated bucket truck boom proposed in this utility model; Figure 3 This is a structural exploded view of the adjusting mechanism of the insulated lifting crossarm on the boom of an insulated bucket truck proposed in this utility model; Figure 4 This is a partial structural cross-sectional view of an insulated lifting crossarm on an insulated bucket truck boom proposed in this utility model; Figure 5 This is a structural exploded view of the lifting mechanism of the insulated lifting crossarm on the boom of an insulated bucket truck proposed in this utility model; Figure 6 This is a partial structural exploded view of an insulated lifting crossarm on the boom of an insulated bucket truck proposed in this utility model.

[0017] Legend: 1. Straight rod; 2. Adjusting mechanism; 21. Sliding sleeve; 22. Clamping block one; 23. Clamping block two; 24. Bolt one; 25. Locking nut; 26. Housing; 27. Motor one; 28. Gear; 29. ​​Rack; 210. Extension rod; 211. Bolt two; 3. Lifting mechanism; 31. Support platform; 32. Connecting frame; 33. Slide rail one; 34. Motor two; 35. Lead screw; 36. Slider one; 37. Connecting plate; 38. Mounting plate; 39. Slide rail two; 310. Slider two; 4. Crossbar; 5. Connecting block; 6. Connecting rod; 7. Fixing block; 8. Bracket; 9. Limiting block; 10. Through hole; 11. Pin. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0019] Please refer to Figures 1 to 6 This utility model provides an insulated lifting crossarm on the boom of an insulated bucket truck, aiming to solve the problems in the prior art where the fixed spacing of the insulated crossarm wires cannot be flexibly adjusted according to the site conditions, the difficulty in adjusting the vertical height of the crossarm during live pole operation leading to installation interference, and the lack of an effective mechanical anti-fall-off structure for the wire support 8, which leads to safety hazards.

[0020] Please refer to Figure 1 and Figure 2 The insulated lifting crossarm on the boom of the insulated bucket truck includes a straight rod 1 and a crossbar 4 fixedly connected to the upper middle part of the front side of the straight rod 1. The straight rod 1 serves as the vertical support body of the insulated lifting crossarm on the boom of the insulated bucket truck, and the crossbar 4 is used to provide horizontal support span.

[0021] To enhance the stability of the insulated lifting crossarm and reduce the pressure and torque generated by the conductor load, connecting blocks 5 are fixedly connected to the left and right sides of the outer wall of the crossarm 4. Connecting rods 6 are rotatably connected to the inner sides of the two connecting blocks 5. A fixing block 7 is fixedly connected to the lower middle part of the outer wall of the straight rod 1. The ends of the two connecting rods 6 away from the connecting blocks 5 are rotatably connected to the front side of the fixing block 7. The connecting rods 6, the straight rod 1, and the crossarm 4 form a stable triangular support structure. An adjustment mechanism 2 is provided at the intersection of the crossarm 4 and the straight rod 1. A lifting mechanism 3 is provided at the bottom of the straight rod 1. The lifting mechanism 3 includes a support platform 31 fixedly connected to the bottom of the straight rod 1 and a connecting frame 32 provided on the rear side of the support platform 31. The connecting frame 32 is used to be fixedly connected to the boom of the insulated bucket truck. Sliding sleeves 21 are slidably connected to the left and right sides of the outer wall of the crossarm 4. A bracket 8 for supporting the conductor is fixedly connected to the top of the two sliding sleeves 21.

[0022] Please refer to Figure 3 and Figure 4 The adjusting mechanism 2 is located at the intersection of the horizontal bar 4 and the vertical bar 1. The adjusting mechanism 2 includes a clamping block 22 located before the intersection of the horizontal bar 4 and the vertical bar 1, and a clamping block 23 located after the intersection of the horizontal bar 4 and the vertical bar 1. The front end of the clamping block 23 is inserted into the inner side of the clamping block 22, clamping the horizontal bar 4 and the vertical bar 1 between the clamping blocks 22 and 23. Bolts 24 are threaded around the clamping block 22, with their rear ends penetrating both the clamping block 22 and the clamping block 23. A locking nut 25 is threaded onto the rear end of the outer wall of the bolts 24. The cooperation of the bolts 24 and the locking nut 25 forces the clamping blocks 22 and 23 closer together, compressing and fixing the horizontal bar 4 and the vertical bar 1. A housing 26 is fixedly connected to the rear side of the clamping block 23, and a motor 27, serving as a power source, is fixedly connected to the rear side of the housing 26. The motor 27 outputs... The output end passes through the housing 26 and is fixedly connected to a gear 28 located inside the housing 26. The upper and lower sides of the inner wall of the housing 26 are slidably connected to racks 29, and both racks 29 are meshed with the gear 28. The left and right ends of the two racks 29 pass through the housing 26. The opposite sides of the two racks 29 are fixedly connected to extension rods 210. The rear ends of the two extension rods 210 are threaded with bolts 211. The front end of the bolts 211 passes through the corresponding extension rods 210 and is threaded to the rear side of the corresponding sliding sleeves 21. When the motor 27 drives the gear 28 to rotate, the gear 28 drives the upper and lower racks 29 to move linearly in opposite directions. The two racks 29 drive the sliding sleeves 21 on the left and right sides of the crossbar 4 to move synchronously towards or away from each other through the corresponding extension rods 210 and bolts 211, thereby realizing the precise adjustment of the distance between the two supports 8.

[0023] As a preferred embodiment, in order to achieve flexible adjustment of the vertical height of the insulated lifting crossarm to adapt to towers of different heights and avoid interference with the installation of new poles, please refer to... Figure 5The lifting mechanism 3 also includes a slide rail 33, a motor 34, a lead screw 35, a slider 36, and a connecting plate 37. The slide rail 33 is fixedly connected to the inner rear end of the connecting frame 32. The motor 34 is fixedly connected to the bottom of the connecting frame 32. The output end of the motor 34 passes through the bottom of the connecting frame 32 and is fixedly connected to the lead screw 35. The slider 36 is threadedly connected to the outer wall of the lead screw 35. The rear end of the slider 36 is slidably connected to the front side of the slide rail 33. The left and right ends of the slider 36 are fixedly connected to the connecting plate 37. The front ends of both connecting plates 37 are fixedly connected to the rear bottom of the support platform 31. In addition, in order to further improve the stability of the support platform 31 when moving up and down and provide auxiliary support, the lifting mechanism 3 also includes a mounting plate 38, a second slide rail 39 and a second slider 310. The front side of the connecting frame 32 is fixedly connected to the mounting plate 38, the front side of the mounting plate 38 is fixedly connected to the slide rail 39, the front side of the slide rail 39 is slidably connected to the second slider 310, and the front end of the second slider 310 is fixedly connected to the rear top of the support platform 31.

[0024] As another preferred embodiment, to prevent the wire from accidentally falling out of the bracket 8 during operation and causing a safety accident, please refer to... Figure 6 A limiting block 9 is rotatably connected to one side of the rear end of the bracket 8. A through hole 10 is provided on one side of the limiting block 9. A pin 11 is slidably connected to the inner wall of the through hole 10. The limiting block 9 is configured to hang down naturally under its own weight in a free state and block the entrance of the bracket 8. The pin 11 is inserted into the through hole 10 and can swing synchronously with the limiting block 9.

[0025] Working principle: When the insulated lifting crossarm on the insulated bucket truck boom supports the conductor, the conductor slides into the inner side of the corresponding bracket 8. As the conductor slides in, it presses down on the limiting block 9. The end of the limiting block 9 that is pressed down swings downward, and one side of the through hole 10 and the pin 11 tilts up. At this time, the limiting block 9 will not block the entrance of the bracket 8. After the conductor falls into the inner side of the bracket 8, the conductor no longer presses down on the limiting block 9. The side of the through hole 10 and the pin 11 falls down under gravity, and the end of the limiting block 9 that was pressed down returns to its original position and blocks the entrance of the bracket 8. When the wire is removed, the limiting block 9 needs to swing in the opposite direction to when it is pressed. Since the pin 11 is located in the through hole 10, when it swings in the opposite direction, the pin 11 collides with the bracket 8. The collision plays a limiting role, and the limiting block 9 cannot swing in the opposite direction. The limiting block 9 plays a role in preventing the wire from falling off. By pulling out the pin 11, the limiting can be released and the wire can be removed. At the same time, the connecting rod 6 forms a triangular support with the straight rod 1 and the cross rod 4. The connecting rod 6 can reduce the pressure and torque of the wire on the cross rod 4 and the straight rod 1, ensuring the safety and reliability of the insulated lifting crossarm. When it is necessary to adjust the wire spacing, when the motor 27 drives the gear 28 to rotate, the gear 28 drives the two racks 29 to move in opposite directions in a straight line. The racks 29 drive the sliding sleeve 21 to move synchronously through the extension rod 210 and the bolt 211. The adjustment mechanism 2 can adjust the spacing between the control wires through the above transmission method, and the adjustment mechanism 2 keeps the wire spacing at a safe distance. When the height of the insulated lifting crossarm needs to be adjusted, the screw 35 is rotated by the motor 34. Since the slider 36 is guided by the slide rail 33, the slider 36 can move up and down linearly due to the thread action when the screw 35 rotates. The slider 36 drives the support platform 31 to move up and down synchronously through the connecting plate 37. The support platform 31 provides guidance and support through the slider 310 and the slide rail 39. The support platform 31 drives the top straight rod 1 to move up and down more smoothly. When the pole is erected with live power, the height of the conductor can be raised through the lifting mechanism 3. The conductor will not interfere with the installation of the new pole. The lifting mechanism 3 provides sufficient installation channel for the new pole. At the same time, the lifting function can flexibly adjust the suspension height of the conductor. The lifting mechanism 3 can adapt to the crossarm installation position of different height towers. The bucket truck can also adjust the height of the overhead conductor a second time through the lifting mechanism 3.

Claims

1. An insulated lifting crossarm on the boom of an insulated bucket truck, comprising: Straight bar (1), cross bar (4), adjustment mechanism (2) and lifting mechanism (3), wherein the lifting mechanism (3) includes a support platform (31) and a connecting frame (32); The feature is that the front side of the straight rod (1) is fixedly connected to the cross rod (4), and the left and right sides of the outer wall of the cross rod (4) are slidably connected to the sliding sleeve (21), and the top of the sliding sleeve (21) is fixedly connected to the bracket (8). The adjustment mechanism (2) is located at the intersection of the crossbar (4) and the straight bar (1). The adjustment mechanism (2) includes a housing (26), a motor (27), a gear (28), a rack (29), and an extension rod (210). The housing (26) is fixedly connected to the rear side of the crossbar (4). The motor (27) is fixedly connected to the rear side of the housing (26). The gear (28) is fixedly connected to the output end of the motor (27). The rack (29) is slidably connected to both the upper and lower sides of the inner wall of the housing (26). Both racks (29) are meshed with the gear (28). The extension rod (210) is fixedly connected to the opposite side of the two racks (29).

2. The insulated lifting crossarm on the boom of an insulated bucket truck according to claim 1, characterized in that, The adjustment mechanism (2) further includes a clamping block one (22), a clamping block two (23), a bolt one (24), and a locking nut (25). The clamping block one (22) is located on the front side where the crossbar (4) intersects with the straight bar (1). The clamping block two (23) is located on the rear side where the crossbar (4) intersects with the straight bar (1). The front end of the clamping block two (23) is inserted into the inside of the clamping block one (22). The bolt one (24) passes through the clamping block one (22) and the clamping block two (23). The locking nut (25) is threaded to the rear end of the bolt one (24).

3. The insulated lifting crossarm on the boom of an insulated bucket truck according to claim 1, characterized in that, The adjustment mechanism (2) also includes a second bolt (211), the rear end of the extension rod (210) is threadedly connected to the second bolt (211), the front end of the second bolt (211) passes through the extension rod (210) and is threadedly connected to the rear side of the sliding sleeve (21).

4. An insulated lifting crossarm on an insulated bucket truck boom according to claim 1, characterized in that, The lifting mechanism (3) also includes a slide rail (33), a motor (34), a lead screw (35), a slider (36), and a connecting plate (37). The slide rail (33) is fixedly connected to the inner rear end of the connecting frame (32). The motor (34) is fixedly connected to the bottom of the connecting frame (32). The lead screw (35) is fixedly connected to the output end of the motor (34). The slider (36) is threadedly connected to the outer wall of the lead screw (35). The rear end of the slider (36) is slidably connected to the front side of the slide rail (33). The connecting plate (37) is fixedly connected between the slider (36) and the support platform (31).

5. An insulated lifting crossarm on an insulated bucket truck boom according to claim 4, characterized in that, The lifting mechanism (3) also includes a mounting plate (38), a second slide rail (39), and a second slider (310). The mounting plate (38) is fixedly connected to the front side of the connecting frame (32). The second slide rail (39) is fixedly connected to the front side of the mounting plate (38). The second slider (310) is slidably connected to the front side of the second slide rail (39). The front end of the second slider (310) is fixedly connected to the rear top of the support platform (31).

6. An insulated lifting crossarm on an insulated bucket truck boom according to claim 1, characterized in that, The crossbar (4) has connecting blocks (5) fixedly connected to the left and right sides of its outer wall. The connecting block (5) has a connecting rod (6) rotatably connected to its inner side. The straight bar (1) has a fixing block (7) fixedly connected to its lower middle part. The end of the connecting rod (6) away from the connecting block (5) is rotatably connected to the front side of the fixing block (7).

7. An insulated lifting crossarm on an insulated bucket truck boom according to claim 1, characterized in that, A limiting block (9) is rotatably connected to one side of the rear end of the bracket (8). A through hole (10) is provided on one side of the limiting block (9), and a pin (11) is slidably connected to the inner wall of the through hole (10).

8. An insulated lifting crossarm on an insulated bucket truck boom according to claim 7, characterized in that, The limiting block (9) is configured such that one side of the through hole (10) tilts upward when subjected to downward pressure, the limiting block (9) covers the entrance of the bracket (8) in a free state, and one end of the pin (11) protrudes from the through hole (10) and abuts against the bracket (8) when the limiting block (9) swings in the opposite direction.

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