A foldable vehicle-mounted power transmission line crossing frame

Abstract

The present invention discloses a retractable vehicle-mounted transmission line spanning frame, belonging to the technical field of power transmission line construction. The spanning frame includes a work vehicle, a robotic arm, a retractable support structure, and a fixed seat. The fixed seat is welded to the end of the robotic arm, and an internal drive structure and an angle adjustment structure are provided at the top of the fixed seat. The internal drive structure of the retractable support structure is connected to the fixed seat through the angle adjustment structure. The retractable vehicle-mounted transmission line spanning frame of the present invention can open and close the support bars on the retractable support structure as needed. The retracted support bars can be locked and fixed to the work vehicle, with small space occupation and convenient transportation. Moreover, the lateral limit blocks can prevent the spanning net guy wires from falling off the support discs. The spanning net can be extended and tensioned by driving the guy wires through the sliding wheels. The angle adjustment structure below the fixed seat can adjust the retractable support structure to adapt to various spanning angles and ground slope conditions, ensuring that the spanning net guy wires are horizontally fully extended along the spanning direction during the tensioning process.

Description

Technical Field

[0001] The present invention relates to the field of transmission line spanning frames, and particularly to a collapsible vehicle-mounted transmission line spanning frame, belonging to the technical field of electric power transmission line construction. Background Art

[0002] In the construction of overhead lines in electric power construction, limited by complex environmental conditions such as spanning distance, vertical safety distance, height and width of the objects to be spanned, and crossing angle, when crossing roads, railways, rivers, and power lines and other channels, it is necessary to set up a spanning frame for construction to ensure the safety of the tensioning process; currently, the main method of setting up the traditional spanning frame device is to use bamboo and steel pipes as the main materials, and manually build the spanning frame from bottom to top on both sides of the spanned channel. This method is relatively backward in terms of material transportation, labor cost, erection time, safety performance and other index factors. Especially when crossing live lines with a voltage level above 110 kV, there are relatively large potential safety hazards during the erection process. While using a mobile spanning frame has the advantages of high construction efficiency, strong adaptability to complex terrains, and recyclable combination use, etc., it can solve problems such as the long construction period and potential safety hazards in the construction of the traditional spanning frame erection method.

[0003] According to the Chinese patent application number CN201410175053.7, the patent name is "Mobile Rapid Spanning Frame". The vertical telescoping of this spanning frame is limited by the weight of the spanning frame, and the lateral expansion span is limited by the length of the vehicle's rear platform. When the spanning frame works in narrow channels such as county roads and provincial roads, it is necessary to customize a support frame with a suitable size according to the space situation, which will affect the work progress and is rather troublesome. Moreover, when the mechanical arm of the work vehicle raises the vehicle-mounted spanning line, the tilt angle is limited by the large volume and heavy weight of the spanning frame. When the terrain slope where the work vehicle is located or the spanning channel is relatively wide, it cannot be effectively fixed and extended for operation. The lateral support arm of this spanning frame will increase correspondingly with the increase in the width of the spanning channel, resulting in a relatively large occupied space and being inconvenient for use in working environments with large spans. It is necessary to propose a mobile spanning frame with a small floor area and capable of effectively laying an insulating spanning net, which is a new type of spanning frame suitable for various spanning widths, complex terrains and other working environment requirements. Summary of the Invention

[0004] The main purpose of the present invention is to provide a collapsible vehicle-mounted transmission line spanning frame, which can effectively solve the technical problems proposed in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A retractable vehicle-mounted power transmission line crossing frame, comprising a work vehicle, a robotic arm and a fixed seat. The fixed seat is welded to the end of the robotic arm. At the top of the fixed seat, a storage structure and an angle adjustment structure are provided. The storage structure is connected to the fixed seat through the angle adjustment structure. A number of support bars are evenly distributed around the storage structure, and at least two diagonal support bars are provided with horizontal limit blocks. The end of the support bar is provided with a sliding wheel.

[0007] The storage structure includes a fixed disk, which is fixed on the angle adjustment structure. A driving motor is fixedly installed at the bottom end of the fixed disk, and a reserved slot is opened in the middle of the top end of the fixed disk. A gear disk is provided at the bottom end inside the reserved slot, and the driving motor is in transmission connection with the gear disk. A middle frame is provided in the middle of the reserved slot, and the middle frame is welded to the fixed disk. A number of fixed shafts are correspondingly arranged between the fixed disk and the middle frame for the support bars. The support bars are distributed tangentially along the circumference of the fixed disk. One end of the fixed shaft passes through the fixed disk and is welded to the support bar. A spur gear meshing with the gear disk is provided on the fixed shaft.

[0008] As a preferred technical solution of the present invention, the spur gears and the fixed shafts are both arranged in a circular array inside the reserved slot, and the cylindrical surfaces of the fixed shafts are rotatably connected to the intersections of the fixed disk and the middle frame.

[0009] As a preferred technical solution of the present invention, the rotation range of the spur gears and the fixed shafts is 0 - 120°, and the sliding wheels on the support bars are arranged in a regular hexagon, and the axes of the sliding wheels are all parallel to each other.

[0010] As a preferred technical solution of the present invention, the angle adjustment structure includes a hydraulic cylinder, which is arranged inside one side of the fixed seat. A hinge connecting plate is provided at the end of the hydraulic cylinder. One side of the hinge connecting plate is fixed to the end of the hydraulic cylinder, and a fixing bolt is provided on the other side of the hinge connecting plate. A sliding slot is opened on one side of the hinge connecting plate. The fixing bolt passes through the inside of the sliding slot and is fixed to the fixed disk, and the fixing bolt is slidably connected to the inner wall of the sliding slot. A rotating shaft is provided at the edge of the fixed seat and on the side far from the hinge connecting plate. A middle connecting plate is welded to the bottom end of the fixed disk and on the side far from the hinge connecting plate, and the middle connecting plate is rotatably connected to the edge of the fixed seat through the rotating shaft. A placement cavity is opened at the top of the fixed seat.

[0011] As a preferred technical solution of the present invention, the hydraulic cylinder is embedded in the fixed seat, and the included angle range between the bottom end of the fixed disk, the middle connecting plate and the top of the fixed seat is 0 - 60°.

[0012] As a preferred technical solution of the present invention, a locking structure is sleeved in the middle of the fixed seat and below the fixed disk, and the middle of the locking structure is welded to the fixed seat. The locking structure includes a fixing plate, and a fixing groove is formed in the middle of the fixing plate. The fixing groove of the fixing plate is welded to the fixed seat. A plurality of placing grooves are formed at the edge of the fixing plate, and threaded holes are formed in the side surface of the fixing plate at the positions of the placing grooves, and fastening bolts are screwed into the threaded holes.

[0013] As a preferred technical solution of the present invention, the width of the placing groove matches the width of the support bar, and the position of the placing groove matches the position of the support bar.

[0014] As a preferred technical solution of the present invention, the orientations of the placing grooves are all arranged in the same direction as the clock, and the placing grooves are all arranged in an annular array on the side wall of the fixing plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. A storage structure is provided, which can extend the robotic arm to a corresponding length as needed. While facilitating the operation vehicle to drive on the road, it can meet the operation requirements of different spanning heights and different slope environments, and can also prevent the spanning frame from expanding too much and affecting surrounding structures. The support bars on the storage structure can be unfolded and gathered, and the sliding wheel spacing of the support bars can be adjusted according to the expanded width of the spanning net of the spanning channel, so as to be suitable for different conductor and ground wire tensioning environments, and the lateral limit blocks can prevent the insulating net guy wires on the support bars from falling off the support bars due to wind.

[0017] 2. A locking structure is provided, which can fix the rotating support bars through the placing grooves, so as to lock the stored support bars and prevent the support bars from unfolding when the operation vehicle is driving; the locked support bars will not affect the driving of the operation vehicle.

[0018] 3. The chassis is provided with an angle adjustment structure, which can increase the one-axis steering angle after the rotation of the robotic arm, which is beneficial to adapting to various spanning angle requirements and can be applied to fixed directions under different slope conditions, so as to prevent the insulating net from falling off or sliding from the edge of the fixed disk, ensure that the insulating net guy wires are horizontally extended along the spanning direction during the tensioning process, and can accurately enter the clamping opening in the locking structure after contraction and be fixed.

[0019] 4. Due to the small working area of the retractable structure, multi-vehicle joint operation can be realized. For example, in the case of large-span and high vertical operation distances, two spanning frame operation vehicles can be set at four points on both sides to jointly support the insulating net to meet the requirements of different spanning angles and operation terrains, and can effectively realize the net sealing protection during the wire laying stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1Schematic diagram of the transportation state of a foldable vehicle-mounted power transmission line crossing frame according to the present invention;

[0021] Figure 2 Schematic diagram of the working state of a foldable vehicle-mounted power transmission line crossing frame according to the present invention;

[0022] Figure 3 Schematic diagram of the unfolded storage support structure of a foldable vehicle-mounted power transmission line crossing frame according to the present invention;

[0023] Figure 4 Schematic diagram of the internal drive structure of the storage support structure of a foldable vehicle-mounted power transmission line crossing frame according to the present invention;

[0024] Figure 5 Schematic diagram of the working state of the unfolded guy wire of the crossing net of a foldable vehicle-mounted power transmission line crossing frame according to the present invention;

[0025] Figure 6 Schematic diagram of the angle adjustment structure of a foldable vehicle-mounted power transmission line crossing frame according to the present invention;

[0026] Figure 7 Schematic diagram of the locking structure of a foldable vehicle-mounted power transmission line crossing frame according to the present invention.

[0027] In the figure: 1, work vehicle; 2, robotic arm; 3, storage structure; 4, locking structure; 5, support bar; 6, lateral limit block; 7, fixed seat; 8, angle adjustment structure; 9, sliding wheel; 301, fixed disk; 302, intermediate frame; 303, drive motor; 304, gear disk; 305, spur gear; 306, reserved groove; 307, fixed shaft; 401, fixed plate; 402, fixed groove; 403, placement groove; 404, fastening bolt; 405, threaded hole; 801, hydraulic cylinder; 802, hinge connecting plate; 803, fixing bolt; 804, sliding groove; 805, intermediate connecting plate; 806, rotating shaft; 807, placement cavity. Detailed implementation manners

[0028] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0029] Such as Figure 1 - Figure 7As shown in the figure, a retractable vehicle-mounted power transmission line spanning frame includes a work vehicle 1, a robotic arm 2, and a fixed seat 7. The fixed seat 7 is welded to the end of the robotic arm 2. At the top of the fixed seat 7, there is a storage support structure 3 and an angle adjustment structure 8. The storage support structure 3 is connected to the fixed seat 7 through the angle adjustment structure 8. A number of support bars 5 are evenly distributed around the storage structure 3, and at least two diagonal support bars 5 are provided with transverse limit blocks 6. A sliding wheel 9 is provided at the end of the support bar 5.

[0030] The storage support structure 3 includes a fixed disk 301. The fixed disk 301 is fixed on the angle adjustment structure 8. A drive motor 303 is fixedly installed at the bottom end of the fixed disk 301. A reserved groove 306 is provided in the middle of the top end of the fixed disk 301. A gear disk 304 is provided at the bottom end inside the reserved groove 306, and the drive motor 303 is in transmission connection with the gear disk 304. A middle frame 302 is provided in the middle of the reserved groove 306, and the middle frame 302 is welded to the fixed disk 301. A number of fixed shafts 307 are correspondingly erected between the fixed disk 301 and the middle frame 302 and are corresponding to the support bars 5. The support bars 5 are distributed tangentially along the circumference of the fixed disk 301. One end of the fixed shaft 307 passes through the fixed disk 301 and is welded to the support bar 5. A spur gear 305 that meshes with the gear disk 304 is provided on the fixed shaft 307, and the transverse limit block 6 can prevent the insulating net guy wire on the support bar 5 from falling off the support bar 5.

[0031] In this embodiment, the spur gears 305 and the fixed shafts 307 are both arranged in a circular array inside the reserved groove 306, and the cylindrical surfaces of the fixed shafts 307 are rotatably connected to the intersections of the fixed disk 301 and the middle frame 302. The support bars 5 on the storage structure 3 can be unfolded and gathered as needed. The gathered support bars 5 facilitate the mobile operation of the work vehicle 1. The unfolded area of the support bars 5 can also be adjusted as needed to meet the requirements of insulating nets with different unfolded widths.

[0032] In this embodiment, the rotation range of the spur gears 305 and the fixed shafts 307 is 0 - 120°. The sliding wheels 9 on the support bars 5 are arranged in a regular hexagon, and the axes of the sliding wheels 9 are all parallel to each other. The spacing between the sliding wheels 9 on the support bars 5 can also be adjusted according to the width of the insulating spanning net, so as to suit different spanning channel environments.

[0033] In this embodiment, the angle adjustment structure 8 includes a hydraulic cylinder 801. The hydraulic cylinder 801 is disposed inside one side of the fixed seat 7. A hinge connecting plate 802 is provided at the end of the hydraulic cylinder 801. One side of the hinge connecting plate 802 is fixed to the end of the hydraulic cylinder 801, and a fixing bolt 803 is provided on the other side of the hinge connecting plate 802. A sliding groove 804 is formed on one side of the hinge connecting plate 802. The fixing bolt 803 passes through the inside of the sliding groove 804 and is fixed to the fixed disk 301. The fixing bolt 803 is slidably connected to the inner wall of the sliding groove 804. A rotating shaft 806 is provided at the edge of the fixed seat 7 and on the side away from the hinge connecting plate 802. A middle connecting plate 805 is welded to the bottom end of the fixed disk 301 and on the side away from the hinge connecting plate 802. The middle connecting plate 805 is rotatably connected to the edge of the fixed seat 7 through the rotating shaft 806. A placement cavity 807 is formed at the top of the fixed seat 7. After the angle of the robotic arm 2 changes, the angle of the angle adjustment structure 8 can also be adjusted, thereby reducing the inclination or sliding of the power transmission line on the fixed disk 301.

[0034] In this embodiment, the hydraulic cylinder 801 is embedded in the fixed seat 7. The included angle range between the bottom end of the fixed disk 301, the middle connecting plate 805 and the top of the fixed seat 7 is 0 - 60°. The adjusting support bar 5 extends horizontally along the spanning direction and can accurately enter the inner bayonet of the locking structure after contraction for fixation.

[0035] In this embodiment, a locking structure 4 is sleeved in the middle of the fixed seat 7 and below the fixed disk 301. The middle of the locking structure 4 is welded to the fixed seat 7. The locking structure 4 includes a fixing plate 401. A fixing groove 402 is formed in the middle of the fixing plate 401. The fixing groove 402 of the fixing plate 401 is welded to the fixed seat 7. A plurality of placement grooves 403 are formed at the edge of the fixing plate 401. A threaded hole 405 is formed on the side of the fixing plate 401 at the position of the placement groove 403. A fastening bolt 404 is screwed into the threaded hole 405 to prevent the support bar 5 from unfolding when the work vehicle 1 is driving. The locked support bar 5 will not affect the driving of the work vehicle 1.

[0036] In this embodiment, the width of the bayonet of the placement groove 403 matches the width of the support bar 5, and the position of the support bar 5 in the retracted state matches the placement groove 403. The retracted support bar 5 can be fixed through the placement groove 403, so that the retracted support bar 5 can be locked and fixed.

[0037] In this embodiment, the openings of the placement grooves 403 are all arranged in the same clockwise direction pointing to the center of the fixed disk, and the placement grooves 403 are all arranged in an annular equidistant array on the outer edge of the fixing plate 401.

[0038] It should be noted that when the transmission line construction needs to cross environments such as railways and highways, a spanning frame is required to protect the passage. For example, two working vehicles 1 can be moved to both sides of the railway or highway to be crossed, and a working platform is formed by fixing to the ground through a spider-like hydraulic leg device. Then, by extending the robotic arm 2, the support bar 5 at the fixed seat 7 is extended above the railway power grid. At this time, the drive motor 303 can be started to drive the gear disk 304 inside the reserved groove 306 to rotate. At this time, the gear disk 304 meshes with the spur gear 305, so that a number of spur gears 305 and the fixed shaft 307 on the spur gear 305 rotate synchronously. At this time, the support bar 5 on the fixed shaft 307 rotates synchronously. When the support bar 5 is rotated to the same plane position as the fixed disk 301, since the robotic arm 2 is arranged obliquely upward, the fixed disk 301 is also arranged obliquely at this time. At this time, the hydraulic cylinder 801 of the fixed seat 7 can be extended to lift one side of the fixed disk 301. At this time, the other side of the fixed disk 301 rotates around the rotation axis 806 of the fixed seat 7. While the fixed disk 301 is rotated, one side of the fixed disk 301 is slidably connected to the hinge connecting plate 802, and the fixing bolt 803 passes through the inside of the sliding groove 804 and is connected to the fixed disk 301 to prevent interference when the fixed disk 301 rotates. When the fixed disk 301 is rotated to an appropriate angle and the fixed disk 301 is in a horizontal state, the lifting of the hydraulic cylinder 801 is stopped. Multiple guy wires of the spanning net can pass through the sliding wheels, and the spanning net in the closed state is simultaneously released and tightened through the spanning frames on both sides of the crossing passage, so that the insulating net can gradually cover the highway or railway passage to be crossed. The spanning net erected between the two spanning frames can be flattened by pulling the guy wires through a tensioner. The insulating spanning net is used to prevent the conductor and ground wire above it from falling during the wire laying construction process, and the guy wires of the spanning net are stretched by relying on the rotation of the sliding wheels 9. The lateral limit blocks 6 on both sides can prevent the guy wires on both edges of the spanning net from falling from the lateral limit blocks 6 on both sides during the tensioning process of the spanning net. The spacing of the sliding wheels 9 can be adjusted according to the width requirements of the spanning net. The fabric structure of the spanning net generally consists of three through guy wires as the main shafts, and a dense two-way warp and weft net is formed between the main shafts. By threading these three guy wires through three pairs of sliding wheels 9, the sliding wheels 9 can drive the guy wires to move while playing a vertical fixing role, enabling the spanning net to be fully expanded horizontally. The guy wires are connected by a traction rope to a tensioner on the ground to form a tensioning mechanism, which can achieve the efficient expansion of the spanning net.

[0039] In this embodiment, the working vehicle 1 can be maneuvered to move and is applicable to different spanning environments, which is more convenient than traditional spanning frames. After the spanning work is completed and the support bars 5 on the storage support structure 3 need to be stored, the hydraulic cylinder 801 needs to be contracted first, so that the fixed disk 301 fits with the fixed seat 7, and the driving motor 303 is received inside the placement cavity 807, so that the driving motor 303 does not affect the fitting of the fixed seat 7 and the fixed disk 301. Then, the driving motor 303 of the fixed disk 301 is rotated in the reverse direction, so that the gear disk 304 and the spur gear 305 are engaged. At this time, the support bar 5 on the fixed shaft 307 deflects in the reverse direction, so that a plurality of support bars 5 are rotated to a position parallel to the axis of the driving motor 303, so that the deployed support bars 5 can be stored at the edge of the fixed disk 301. At this time, the horizontal occupied space of the support bar 5 can be reduced. Rotate each support bar 5 to gather towards the locking structure 4 and store it inside the placement groove 403 of the fixing plate 401. Then, fasten the support bars 5 inside the placement groove 403 through the fastening bolts 404 to prevent the placement groove 403 from loosening when the working vehicle 1 is driving, and it will not affect the normal driving of the working vehicle 1. This spanning frame has stronger mobility than traditional bamboo or steel pipe spanning frames and solves the operation time of repeatedly disassembling and assembling the spanning frame.

[0040] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A retractable vehicle-mounted power transmission line spanning frame, characterized in that: It includes a work vehicle (1), a robotic arm (2) and a fixed seat (7). The fixed seat (7) is welded to the end of the robotic arm (2). At the top of the fixed seat (7), a storage structure (3) and an angle adjustment structure (8) are provided. The storage structure (3) is connected to the fixed seat (7) through the angle adjustment structure (8). A number of support bars (5) are evenly distributed around the storage structure (3), and at least two diagonal support bars (5) are provided with horizontal limit blocks (6). The end of the support bar (5) is provided with a sliding wheel (9); The storage structure (3) includes a fixed disk (301). The fixed disk (301) is fixed on the angle adjustment structure (8). A driving motor (303) is fixedly installed at the bottom end of the fixed disk (301). A reserved slot (306) is opened in the middle of the top end of the fixed disk (301). A gear disk (304) is provided at the bottom end inside the reserved slot (306), and the driving motor (303) is in transmission connection with the gear disk (304). A middle frame (302) is provided in the middle of the reserved slot (306), and the middle frame (302) is welded to the fixed disk (301). A number of fixed shafts (307) are correspondingly installed between the fixed disk (301) and the middle frame (302) and are corresponding to the support bars (5). The support bars (5) are distributed tangentially along the circumference of the fixed disk (301). One end of the fixed shaft (307) passes through the fixed disk (301) and is welded to the support bar (5). A spur gear (305) meshing with the gear disk (304) is provided on the fixed shaft (307); The spur gears (305) and the fixed shafts (307) are both arranged in an annular array inside the reserved slot (306), and the cylindrical surfaces of the fixed shafts (307) are rotatably connected to the intersections of the fixed disk (301) and the middle frame (302); A locking structure (4) is sleeved in the middle of the fixed seat (7) and below the fixed disk (301), and the middle of the locking structure (4) is welded to the fixed seat (7). The locking structure (4) includes a fixing plate (401). A fixing slot (402) is opened in the middle of the fixing plate (401). The fixing slot (402) of the fixing plate (401) is welded to the fixed seat (7). A number of placing slots (403) are opened at the edge of the fixing plate (401). Threaded holes (405) are opened on the side surface of the fixing plate (401) at the positions of the placing slots (403), and fastening bolts (404) are screwed inside the threaded holes (405); The width of the placing slot (403) matches the width of the support bar (5), and the position of the placing slot (403) matches the position of the support bar (5).

2. A retractable vehicle-mounted power transmission line spanning frame according to claim 1, characterized in that: The rotation range of the spur gears (305) and the fixed shafts (307) is 0 - 120°. The sliding wheels (9) on the support bars (5) are arranged in a regular hexagon, and the axes of the sliding wheels (9) are all parallel to each other.

3. A retractable vehicle-mounted transmission line spanning frame according to claim 1, characterized in that: The angle adjustment structure (8) includes a hydraulic cylinder (801), the hydraulic cylinder (801) is arranged inside one side of the fixed seat (7), a hinge connecting plate (802) is arranged at the end of the hydraulic cylinder (801), one side of the hinge connecting plate (802) is fixed to the end of the hydraulic cylinder (801), and a fixing bolt (803) is arranged on the other side of the hinge connecting plate (802). A sliding groove (804) is formed on one side of the hinge connecting plate (802). The fixing bolt (803) passes through the inside of the sliding groove (804) and is fixed to the fixed disk (301), and the fixing bolt (803) is slidably connected to the inner wall of the sliding groove (804). A rotating shaft (806) is arranged at the edge of the fixed seat (7) and on the side away from the hinge connecting plate (802). A middle connecting plate (805) is welded to the bottom end of the fixed disk (301) and on the side away from the hinge connecting plate (802). The middle connecting plate (805) is rotatably connected to the edge of the fixed seat (7) through the rotating shaft (806). A placement cavity (807) is formed at the top of the fixed seat (7).

4. A retractable vehicle-mounted transmission line spanning frame according to claim 3, characterized in that: The hydraulic cylinder (801) is embedded in the fixed seat (7), and the vertical included angle range between the bottom end of the fixed disk (301), the middle connecting plate (805) and the top of the fixed seat (7) is 0 - 60°.

5. A retractable vehicle-mounted transmission line spanning frame according to claim 1, characterized in that: The orientations of the placement grooves (403) are arranged in the same direction as the clock, and the placement grooves (403) are arranged in a circular array on the side wall of the fixing plate (401).

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