Large-section high-voltage cable installation in-place device

Abstract

The invention discloses a large-section high-voltage cable in-place installation device which comprises a moving trolley, a supporting frame, a lifting frame, a first guide wheel, a second guide wheel, a chain block and a guide chain, the lifting frame is movably connected with the supporting frame in the vertical direction, the first guide wheel is rotatably arranged at the top of the supporting frame, and the second guide wheel is rotatably arranged at the bottom of the supporting frame. The second guide wheel is rotatably arranged on the lifting frame, and the chain block is used for driving the second end of the guide chain to move in the vertical direction so that the guide chain can drive the lifting frame to move in the vertical direction. Through the mechanical lifting device, the workload of manually carrying the cable is reduced, and the mounting efficiency is improved. The requirement for carrying heavy objects directly by personnel is lowered, the risk of personnel injury is reduced, and the device can be used in tunnels and interlayers with limited space, does not need a hoisting machine tool, and is high in adaptability. And equipment and personnel required by construction are reduced, so that the construction cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical engineering, and particularly relates to an installation and positioning device for large cross-section high-voltage cables. Background Art

[0002] The high-voltage cables with a voltage level of 220 kV and above put into operation in the 1990s of the last century have gradually reached the end of their service life. When carrying out technical transformation, improving cable performance such as capacity expansion, flame retardancy, water blocking, and aluminum sheath protection will be considered. During laying, the open laying method with bracket installation replaces the concealed installation method such as cable trench laying, achieving the purpose of being beautiful and convenient for inspection. Since the cross-sectional area and weight of the cable increase after capacity expansion, when installing and fixing large cross-section high-voltage cables with a voltage level of 220 kV and above on the shelf at present, the whole section of the cable needs to be gradually removed from the cable conveyor and guide wheels and lifted and placed on the vertical rack, resulting in difficulties in lifting onto the shelf. It is difficult to complete only by manpower, with low efficiency and risks such as personal injury and damage to the outer sheath of the cable; at the same time, the construction areas are mostly tunnels and mezzanines, and due to space conditions, it is not possible to use hoisting tools. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to some extent.

[0004] To this end, an embodiment of the present invention provides an installation and positioning device for large cross-section high-voltage cables.

[0005] The installation and positioning device for large cross-section high-voltage cables according to the embodiment of the present invention includes a mobile vehicle, a support frame, a lifting frame, a first guide wheel, a second guide wheel, a manual hoist, and a guide chain. The support frame is arranged on the mobile vehicle and extends in the vertical direction; the lifting frame is movably connected to the support frame in the vertical direction, and the lifting frame is used to drive the cable to lift and lower; the first guide wheel is rotatably arranged at the top of the support frame, and the second guide wheel is rotatably arranged on the lifting frame;

[0006] The manual hoist is arranged on the support frame. The first end of the guide chain is connected to the support frame, and the second end of the guide chain sequentially surrounds the first guide wheel and the second guide wheel and then is connected to the manual hoist. The manual hoist is used to drive the second end of the guide chain to move in the vertical direction, so that the guide chain drives the lifting frame to move in the vertical direction.

[0007] In some embodiments, the manual hoist is a hand-operated manual hoist.

[0008] In some embodiments, the mobile vehicle includes a mobile frame and a plurality of mobile wheels, and the mobile wheels are rotatably arranged on the mobile frame.

[0009] In some embodiments, the mobile vehicle further includes a push handle, which is oppositely arranged on both sides of the support frame relative to the lifting frame. The bottom end of the push handle is connected to the mobile frame, and the push handle is arranged at an angle with the support frame.

[0010] In some embodiments, the lifting frame includes a connecting plate and a support plate. The connecting plate and the support plate are arranged in an L shape. The connecting plate is parallel to the support frame and connected to the support frame, and the support plate is arranged horizontally.

[0011] In some embodiments, there are two support plates, and the two support plates are arranged at intervals along the width direction of the mobile frame.

[0012] In some embodiments, the large cross-section high-voltage cable installation and positioning device of the embodiments of the present invention includes a limiting fixture, which is detachably arranged on the support plate and is used for placing the cable.

[0013] In some embodiments, the top end surface of the limiting fixture has an arc-shaped groove recessed downward.

[0014] In some embodiments, an elastic member is attached to the inner wall of the arc-shaped groove.

[0015] In some embodiments, a first connection hole is opened on the limiting fixture, and the first connection hole vertically penetrates the limiting fixture. A second connection hole extending vertically is opened on the support plate, and the number of the second connection holes is multiple. The multiple second connection holes are arranged at intervals along the length direction of the mobile frame. The limiting fixture and the support plate are connected by fasteners passing through the first connection hole and the second connection hole.

[0016] The large cross-section high-voltage cable installation and positioning device of the embodiments of the present invention reduces the workload of manually handling cables through a mechanized lifting device, improves the installation efficiency, reduces the need for personnel to directly participate in handling heavy objects, and reduces the risk of personnel injury. It avoids the damage that may be caused to the outer sheath of the cable in the traditional method. This device can be used in tunnels and mezzanines with limited space, does not require hoisting equipment, and has strong adaptability. Through the simple operation of a manual hoist and a chain block, the precise lifting of the cable can be achieved. It reduces the equipment and personnel required for construction, thereby reducing the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a side view of the large cross-section high-voltage cable installation and positioning device of the embodiments of the present invention.

[0018] Figure 2 is a front view of the large cross-section high-voltage cable installation and positioning device of the embodiments of the present invention.

[0019] Figure 3 It is a top view of the large cross-section high-voltage cable installation and positioning device according to an embodiment of the present invention.

[0020] Reference numerals:

[0021] 100, large cross-section high-voltage cable installation and positioning device; 1, mobile vehicle; 101, mobile frame; 102, mobile wheels; 103, push handle; 2, support frame; 3, lifting frame; 301, connecting plate; 302, support plate; 4, first guide wheel; 5, second guide wheel; 6, chain block; 7, guide chain; 8, limit clamp; 801, arc-shaped groove; 9, fastener. Detailed implementation manners

[0022] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0023] As Figures 1 to 3 shown, the large cross-section high-voltage cable installation and positioning device 100 according to an embodiment of the present invention includes a mobile vehicle 1, a support frame 2, a lifting frame 3, a first guide wheel 4, a second guide wheel 5, a chain block 6 and a guide chain 7. The support frame 2 is provided on the mobile vehicle 1 and extends in the vertical direction. The lifting frame 3 is movably connected to the support frame 2 in the vertical direction, and the lifting frame 3 is used to drive the cable to lift. The first guide wheel 4 is rotatably provided at the top of the support frame 2, and the second guide wheel 5 is rotatably provided on the lifting frame 3.

[0024] The chain block 6 is provided on the support frame 2. The first end of the guide chain 7 is connected to the support frame 2, and the second end of the guide chain 7 sequentially surrounds the first guide wheel 4 and the second guide wheel 5 and then is connected to the chain block 6. The chain block 6 is used to drive the second end of the guide chain 7 to move in the vertical direction, so that the guide chain 7 drives the lifting frame 3 to move in the vertical direction.

[0025] When the large cross-section high-voltage cable installation and positioning device 100 according to an embodiment of the present invention is in use, the mobile vehicle 1 is moved to the starting position of cable laying, and the support frame 2 is fixed on the mobile vehicle 1 to ensure stability. First, operate the chain block 6 to drive the second end of the guide chain 7 to move downward in the vertical direction, lower the lifting frame 3 to a lower position, then place the cable on the lifting frame 3, and then operate the chain block 6 to drive the second end of the guide chain 7 to move upward in the vertical direction, so that the lifting frame 3 drives the cable to rise in the vertical direction to the erection position. When the cable rises to the required height, through the cooperation of operating the chain block 6 and the guide chain 7, the cable is gradually placed on the predetermined upright frame. After the cable is placed on the rack, necessary fixing and adjustment are carried out to ensure the safety and operation efficiency of the cable.

[0026] The cable installation and positioning device 100 with a large cross-section in the embodiments of the present invention reduces the workload of manually handling cables through a mechanized lifting device, improves the installation efficiency, reduces the need for personnel to directly participate in handling heavy objects, and reduces the risk of personnel injury. It avoids damage to the outer sheath of the cable that may occur in traditional methods. This device can be used in tunnels and mezzanines with limited space, does not require hoisting equipment, and has strong adaptability. Through the simple operation of the chain block 6 and the guide chain 7, precise lifting of the cable can be achieved. It reduces the equipment and personnel required for construction, thereby reducing the construction cost.

[0027] In some embodiments, the chain block 6 is a hand-operated chain block 6.

[0028] The hand-operated chain block 6 is operated by manual hand cranking and does not require electricity, so it is particularly suitable for environments without power or where the power supply is unreliable. The structure of the hand-operated chain block is relatively simple, and maintenance and repair are relatively convenient. There is no need to install complex power lines and control systems, which can save installation space. Hand-operated chain blocks are usually small in size and light in weight, making them easy to move and carry, and suitable for a variety of working environments. The hand-operated operation can control the speed and force of lifting or lowering in real time, improving the safety of operation.

[0029] In some embodiments, the mobile vehicle 1 includes a mobile frame 101 and a plurality of mobile wheels 102, and the mobile wheels 102 are rotatably provided on the mobile frame 101.

[0030] With the mobile wheels 102, the entire cable installation and positioning device 100 in the embodiments of the present invention can be easily moved within the workplace, saving manpower and material resources. The mobile wheels 102 can reduce the labor intensity generated by manual pushing during the movement process, thereby reducing the risk of injury to the operator. The design of the mobile wheels 102 allows the device to be used on different types of floors or tracks, increasing its applicability. The flexibility of the mobile vehicle 1 makes the cable installation process more simple and fast.

[0031] In some embodiments, the mobile vehicle 1 further includes a push handle 103, and the push handle 103 and the lifting frame 3 are relatively arranged on both sides of the support frame 2. The bottom end of the push handle 103 is connected to the mobile frame 101, and the push handle 103 is arranged at an angle with the support frame 2.

[0032] The bottom end of the push handle 103 is connected to the mobile frame 101, ensuring direct and stable force transmission during pushing. The push handle 103 and the lifting frame 3 are relatively arranged on both sides of the support frame 2, so that during operation, the device can be conveniently pushed from one side without interfering with the operation of the lifting frame 3. The push handle 103 is arranged at a certain angle with the support frame 2, and this angle is usually designed according to ergonomics, enabling the operator to apply the most natural force when pushing the mobile vehicle 1, reducing labor intensity and improving pushing efficiency.

[0033] The arrangement of the push handle 103 enables the operator to easily push the entire device, especially when a relatively long distance needs to be covered, significantly reducing the labor intensity. The presence of the push handle 103 reduces the direct contact of the operator with other parts of the mobile cart 1, such as the lifting frame 3 or the cable, thereby reducing the risk of accidental injury. Due to the convenient operation design of the push handle 103, the movement of the mobile cart 1 is faster and more accurate, thus improving the work efficiency of the entire cable installation process.

[0034] In some embodiments, the lifting frame 3 includes a connecting plate 301 and a support plate 302. The connecting plate 301 and the support plate 302 are arranged in an L shape. The connecting plate 301 is parallel to the support frame 2 and is connected to the support frame 2, and the support plate 302 is arranged horizontally.

[0035] The connecting plate 301 and the support plate 302 being arranged in an L shape is conducive to providing stable support and lifting functions. The design of the connecting plate 301 being parallel to the support frame 2 helps to ensure the stability and safety of the cable during the lifting process. The horizontal arrangement of the support plate 302 can ensure the balance of the cable during placement and lifting, avoiding unnecessary bending or damage to the cable due to angle problems.

[0036] In some embodiments, there are two support plates 302, and the two support plates 302 are arranged at intervals in the width direction of the moving frame 101.

[0037] The main function of the support plate 302 is to support the cable, preventing the cable from sagging or bending due to its own weight during lifting and movement, thereby protecting the outer sheath of the cable from damage. Through the spaced arrangement of the two support plates 302, the weight of the cable can be more evenly distributed on the support plates 302 and then dispersed to the entire lifting frame 3 and the mobile cart 1.

[0038] In some embodiments, the large cross-section high-voltage cable installation and positioning device 100 of the present invention embodiment includes a limit clamp 8. The limit clamp 8 is detachably arranged on the support plate 302, and the limit clamp 8 is used for placing the cable.

[0039] The limit clamp 8 being detachably arranged on the support plate 302 allows the operator to quickly install or remove the clamp as needed. The limit clamp 8 is used for placing the cable, ensuring that the cable remains in the correct position during lifting and movement, preventing the cable from slipping out of the support plate 302 during operation, ensuring the stability during the installation process, and improving the safety of the operation. The clamp can help the operator accurately position the cable and ensure that the cable is correctly placed and fixed on the lifting frame 3.

[0040] In some embodiments, the top end surface of the limit clamp 8 has a downwardly concave arc-shaped groove 801.

[0041] The shape of the arc-shaped groove 801 matches the outer diameter shape of the cable. This design can better adapt to the shape of the cable and provide more stable support. The downward depression of the groove helps to fix the cable and prevent the cable from slipping out of the fixture during operation. Since the groove matches the outer diameter of the cable, the limit fixture 8 can fix the cable more tightly, reducing the displacement and shaking of the cable during operation and improving the stability of the operation. The design of the arc-shaped groove 801 can reduce the friction between the cable and the fixture, thereby protecting the outer sheath of the cable from damage.

[0042] In some embodiments, an elastic member is attached to the inner wall of the arc-shaped groove 801.

[0043] When the cable is placed in the arc-shaped groove 801, the elastic member applies a certain pressure to the outer sheath of the cable to ensure that the cable is firmly fixed to the limit fixture 8. The elastic member can provide a better fit according to the shape and size changes of the cable, making the cable more stable in the fixture. The addition of the elastic member increases the holding force of the limit fixture 8 on the cable, preventing the cable from sliding or shifting during operation. The elastic material can reduce the direct friction on the outer sheath of the cable and reduce the risk of cable damage. The elastic member can adapt to cables of different diameters, enabling the limit fixture 8 to be applicable to a wider range of cable specifications. Due to the buffering effect of the elastic member, the vibration and impact during the lifting process of the cable are reduced, reducing the possibility of cable damage. The softness of the elastic member makes the placement and removal of the cable more convenient, improving the operation efficiency. If the elastic member is worn or damaged, it can be replaced separately without replacing the entire fixture, reducing the maintenance cost.

[0044] In some embodiments, a first connection hole is formed in the limit fixture 8. The first connection hole penetrates the limit fixture 8 in the vertical direction. A second connection hole extending in the vertical direction is formed in the support plate 302. The number of the second connection holes is multiple, and the multiple second connection holes are arranged at intervals along the length direction of the moving frame 101. The limit fixture 8 and the support plate 302 are connected by a fastener 9 passing through the first connection hole and the second connection hole.

[0045] A first connection hole is formed in the limit fixture 8, and this hole penetrates the limit fixture 8 in the vertical direction to facilitate cooperation with the second connection hole on the support plate 302. The support plate 302 is provided with a plurality of second connection holes extending in the vertical direction. The number and positions of these holes are set according to design requirements to ensure that the limit fixture 8 can be stably installed on the support plate 302.

[0046] A plurality of second connection holes are arranged at intervals along the length direction of the moving frame 101, so that the position of the limit clamp 8 can be adjusted in the length direction of the moving frame 101, facilitating the installation of different limit clamps 8 and having strong versatility. The limit clamp 8 and the support plate 302 are connected by a fastener 9 passing through the first connection hole and the second connection hole, such as bolts, nuts, etc., to ensure a firm connection between the two. Through the connection of the fastener 9, the connection between the limit clamp 8 and the support plate 302 is more firm, improving the stability of the overall structure. If it is necessary to replace or maintain the limit clamp 8 or the support plate 302, the design of the fastener 9 makes the disassembly and installation process simple and fast. The second connection holes arranged at intervals allow the limit clamp 8 to be fixed at different positions, increasing the adaptability of the device to different specifications of cables. The use of the fastener 9 simplifies the operation process and does not require complex installation steps, and can be installed quickly.

[0047] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention.

[0048] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connection", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0050] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0051] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without conflict, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0052] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A large cross-section high-voltage cable installation and positioning device (100), characterized in that, Comprising: A mobile vehicle (1); A support frame (2), which is arranged on the mobile vehicle (1) and extends in the vertical direction; A lifting frame (3), which is movably connected to the support frame (2) in the vertical direction, and the lifting frame (3) is used to drive the cable to lift; A first guide wheel (4) and a second guide wheel (5), the first guide wheel (4) is rotatably arranged at the top of the support frame (2), and the second guide wheel (5) is rotatably arranged on the lifting frame (3); A chain block (6) and a guide chain (7), the chain block (6) is arranged on the support frame (2), the first end of the guide chain (7) is connected to the support frame (2), the second end of the guide chain (7) sequentially surrounds the first guide wheel (4) and the second guide wheel (5) and then is connected to the chain block (6), and the chain block (6) is used to drive the second end of the guide chain (7) to move in the vertical direction, so that the guide chain (7) drives the lifting frame (3) to move in the vertical direction.

2. The large cross-section high-voltage cable installation and positioning device (100) according to claim 1, characterized in that, The chain block (6) is a hand-operated chain block (6).

3. The large cross-section high-voltage cable installation and positioning device (100) according to claim 1, characterized in that, The mobile vehicle (1) includes a mobile frame (101) and a plurality of mobile wheels (102), and the mobile wheels (102) are rotatably arranged on the mobile frame (101).

4. The large cross-section high-voltage cable installation and positioning device (100) according to claim 3, characterized in that, The mobile vehicle (1) further includes a push handle (103), the push handle (103) and the lifting frame (3) are oppositely arranged on both sides of the support frame (2), the bottom end of the push handle (103) is connected to the mobile frame (101), and the push handle (103) is arranged at an angle with the support frame (2).

5. The large cross-section high-voltage cable installation and positioning device (100) according to claim 1, characterized in that, The lifting frame (3) includes a connecting plate (301) and a support plate (302), the connecting plate (301) and the support plate (302) are arranged in an L shape, the connecting plate (301) is parallel to the support frame (2) and is connected to the support frame (2), and the support plate (302) is horizontally arranged.

6. The large cross-section high-voltage cable installation and positioning device (100) according to claim 5, characterized in that, There are two support plates (302), and the two support plates (302) are arranged at intervals along the width direction of the mobile frame (101).

7. The large cross-section high-voltage cable installation and positioning device (100) according to claim 5, characterized in that, Including a limit fixture (8), the limit fixture (8) is detachably arranged on the support plate (302), and the limit fixture (8) is used to place the cable.

8. The large cross-section high-voltage cable installation and positioning device (100) according to claim 7, characterized in that, The top end surface of the limit fixture (8) has an arc-shaped groove (801) that is recessed downward.

9. The large cross-section high-voltage cable installation and positioning device (100) according to claim 8, characterized in that, An elastic member is attached to the inner wall of the arc-shaped groove (801).

10. The large cross-section high-voltage cable installation and positioning device (100) according to claim 5, characterized in that, A first connection hole is formed in the limit fixture (8), the first connection hole penetrates the limit fixture (8) in the vertical direction, a second connection hole extending in the vertical direction is formed in the support plate (302), the number of the second connection holes is multiple, and the multiple second connection holes are arranged at intervals along the length direction of the mobile frame (101), and the limit fixture (8) and the support plate (302) are connected by a fastener (9) passing through the first connection hole and the second connection hole.

Images