Extra-high voltage cable laying device

Abstract

The invention relates to the technical field of cable laying equipment, in particular to an extra-high voltage cable laying device which comprises a lifting mechanism, the lifting mechanism comprises a middle shaft and at least one supporting wheel rotationally connected to the middle shaft, and the lifting mechanism further comprises supporting tables rotationally connected to the middle shaft and arranged on the two sides of the supporting wheel. The rotating angles of the two supporting tables on the middle shaft can be adjusted; wherein the two supporting tables are configured in the mode that when the cable is laid, the free ends of the supporting tables are adjusted to be away from the contact face of the cable and the supporting wheels; and when the laying is stopped, the free ends of the two supporting tables are reversely adjusted to be in contact with the cable so as to lift the cable. Through the arrangement, when the cable body is laid, the cable body is only in rolling contact with the riding wheels, so that the conditions of friction force and damage to the outer insulation skin of the cable body can be reduced; and when the laying is stopped, the cable body can be protected through the lifting of the supporting table.

Description

Technical Field

[0001] The present invention relates to the technical field of cable laying equipment, and in particular to a UHV cable laying device. Background Art

[0002] Ultra-high voltage cable refers to power cable that transmits voltage levels exceeding 1000 kilovolts. It is mainly used for long-distance, large-capacity power transmission. It has the characteristics of low transmission loss and strong transmission capacity. It plays an important role in large-scale power grid transmission and cross-border power interconnection.

[0003] In the prior art, when laying UHV cables, a suspended laying method is mostly adopted, that is, the cables are placed on a bracket and fixed by structures such as cable ties and pressure plates to keep the cables away from the ground or obstacles; when laying, the cables need to be towed by a traction machine, so that the cables need to be moved on the bracket, which will cause wear on the cable skin. Therefore, it is only suitable for short-distance laying, and the cables are easily deformed, broken, and damaged if they are placed on the bracket for a long time. Summary of the invention

[0004] In view of at least one of the above technical problems, the present invention provides a UHV cable laying device, which adopts structural improvement to solve the problems of short distance and easy damage when laying UHV cables in the prior art.

[0005] According to a first aspect of the present invention, there is provided a UHV cable laying device, comprising:

[0006] A lifting mechanism, the lifting mechanism comprising a central axis and at least one supporting wheel rotatably connected to the central axis, the lifting mechanism further comprising supporting platforms rotatably connected to the central axis and disposed on both sides of the supporting wheel, and the rotation angles of the two supporting platforms on the central axis are adjustable;

[0007] The two supports are configured so that when laying the cable, the free ends thereof are adjusted to be away from the contact surface between the cable and the supporting wheel; when laying stops, the free ends of the two supports are reversely adjusted to contact with the cable to lift the cable.

[0008] In some embodiments of the present invention, the supporting wheel is provided with a roller groove, and the supporting platform is provided with wire supporting grooves whose number corresponds to the number of the supporting wheels.

[0009] In some embodiments of the present invention, a rubber pad is provided in the wire supporting groove, and a deformation buffer space is provided between the rubber pad and the wire supporting groove.

[0010] In some embodiments of the present invention, a connecting arm is rotatably connected to the central axis, the connecting arm is located on both sides of the supporting wheel, the support platform is fixed to the connecting arm, and a locking structure is provided between the connecting arm and the central axis for limiting the rotation angle of the connecting arm.

[0011] In some embodiments of the present invention, the locking structure includes a slideway axially arranged on the central axis and a locking plate axially arranged on the slideway so as to be relatively slidable, a locking block protruding from the surface of the central axis is arranged on the locking plate corresponding to the position of the connecting arm, the connecting arm has a through hole for being sleeved on the central axis, and the inner wall of the through hole has a locking groove arranged corresponding to the locking block.

[0012] In some embodiments of the present invention, the locking block is provided with an inserting edge extending toward the side, a side wall of the card slot is provided with a secondary slot, and the inserting edge is provided corresponding to the secondary slot.

[0013] In some embodiments of the present invention, the lifting position of the two supports is the position when the two supports are horizontally coplanar, and the UHV cable laying device also includes a pressing mechanism that presses on the two supports and the supporting wheels when the two supports are in the lifting position.

[0014] In some embodiments of the present invention, the buckle mechanism includes a pressing plate and a buckle arranged at the bottom of the pressing plate, and the side wall of the support platform also has a buckle groove arranged corresponding to the buckle.

[0015] In some embodiments of the present invention, at least one pressing edge is further provided at the bottom of the pressing plate, and the support platform has a pressing groove arranged in a direction perpendicular to the wire supporting groove, and when the buckle is buckled into the buckle groove, the pressing edge extends into the pressing groove.

[0016] In some embodiments of the present invention, a supporting mechanism is further included, which includes a bracket and a base with adjustable height in the vertical direction of the bracket, the central axis is fixedly connected to the base, the pressure plate is rotatably connected to the base, the bracket has a plurality of vertically spaced long holes, the top of the base has a right-angle clamping plate that can be inserted into the long hole, and the bottom of the base has an arc-shaped plate that can be extended into the long hole.

[0017] The beneficial effects of the present invention are as follows: through the cooperation between the supporting wheel and the supporting platform, when the ultra-high voltage cable is laid, the supporting platforms on both sides of the supporting wheel are swung to the bottom of the supporting wheel, so that the ultra-high voltage cable is only transported in rolling contact with the supporting wheel. Compared with the prior art, the friction damage of the ultra-high voltage cable during laying and movement is reduced, thereby achieving long-distance laying and reducing the number of joints of the cable body; when the laying stops, the supporting platform can achieve the lifting operation of the ultra-high voltage cable on both sides of the supporting wheel by adjusting the angle of the supporting platform. Compared with the prior art, the force-bearing area of ​​the cable body is effectively increased, the cable body is protected, and the deformation and breakage caused by long-term exposure to high pressure are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a lifting mechanism in an embodiment of the present invention;

[0020] Figure 2 It is a structural schematic diagram of a support platform in an embodiment of the present invention;

[0021] Figure 3 It is a partial enlarged structural schematic diagram of the locking structure in an embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the connection structure between the support platform and the connecting arm in an embodiment of the present invention;

[0023] Figure 5 Schematic diagram of the connection structure between the lock plate and the central axis in an embodiment of the present invention;

[0024] Figure 6 It is a schematic diagram of the axial cross-sectional structure of the central shaft in an embodiment of the present invention;

[0025] Figure 7 It is a structural schematic diagram of a locking plate in an embodiment of the present invention;

[0026] Figure 8 It is a structural schematic diagram of a UHV cable laying device according to an embodiment of the present invention;

[0027] Fig. 9 It is a schematic diagram of the exploded structure of the pressing mechanism and the lifting mechanism in the embodiment of the present invention;

[0028] Fig.10It is a schematic diagram of a half-section structure of the support mechanism in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] like Figures 1 to 10The UHV cable laying device shown comprises: a lifting mechanism 200, the lifting mechanism 200 comprises a central axis 201 and at least one supporting wheel 202 rotatably connected to the central axis 201, the lifting mechanism 200 also comprises a support 203 rotatably connected to the central axis 201 and disposed on both sides of the supporting wheel 202, and the rotation angles of the two supports 203 on the central axis 201 are adjustable; it should be pointed out here that, in some embodiments of the present invention, the adjustment of the rotation angle of the support 203 has a variety of implementation methods, for example, the setting of the rotation angle of the support 203 can be achieved by passing a bolt through the side of the support 203 and abutting or screwing with the central axis 201; in an embodiment of the present invention, the two supports 203 are configured so that when the cable is laid, the free ends thereof are adjusted to be away from the contact surface between the cable and the supporting wheel 202; when the laying stops, the free ends of the two supports 203 are reversely adjusted to contact with the cable to lift the cable. By such arrangement, when laying the cable body 100, the cable body 100 only rolls in contact with the supporting wheel 202, thereby reducing friction and damage to the outer insulation skin of the cable body 100; when the laying stops, the stop here can be the completion of the laying or the pause of the laying, and the cable body 100 can be protected by the support of the support platform 203. In addition, it should be pointed out here that in the embodiment of the present invention, the specific fixed position of the lifting mechanism 200 is not limited, and it can be fixed on the power tower, or fixed in position by other existing lifting mechanisms.

[0033] In the above embodiment, through the cooperation between the supporting wheel 202 and the supporting platform 203, when the ultra-high voltage cable is laid, the supporting platforms 203 on both sides of the supporting wheel 202 are swung to the bottom of the supporting wheel 202, so that the ultra-high voltage cable is only transported in rolling contact with the supporting wheel 202. Compared with the prior art, the friction damage of the ultra-high voltage cable during laying and movement is reduced, so that long-distance laying can be achieved and the number of joints of the cable body 100 can be reduced; when the laying stops, the angle of the supporting platform 203 is adjusted so that the supporting platform 203 can realize the lifting operation of the ultra-high voltage cable on both sides of the supporting wheel 202. Compared with the prior art, the force-bearing area of ​​the cable body 100 is effectively increased, and the cable body 100 is protected to avoid deformation and breakage caused by long-term exposure to high pressure.

[0034] On the basis of the above embodiment, optionally, in order to further improve the stability of the cable body 100 when the supporting wheel 202 is transmitting the cable body 100, please continue to refer to Figure 1 The supporting wheel 202 has a roller groove 202a, and the supporting platform 203 has a wire supporting groove 203a corresponding to the number of the supporting wheels 202. Of course, it should be pointed out here that in some embodiments of the present invention, the number of supporting wheels 202 is set according to actual needs, and the number of wire supporting grooves 203a corresponds to the number of supporting wheels 202, for example Figure 1 As shown in , when there are three supporting wheels 202, three wire supporting grooves 203a are also provided on the supporting platform 203. The structural shapes of the roller groove 202a and the wire supporting groove 203a are not limited here, and can be U-shaped, semicircular, or other arc-shaped cross-sectional structures.

[0035] Alternatively, if Figure 2 As shown in , in some embodiments of the present invention, in order to further improve the protection of the cable body 100, a rubber pad 213 is provided in the cable support groove 203a, and a deformation buffer space 203b is provided between the rubber pad 213 and the cable support groove 203a. The provision of the rubber pad 213 can provide a buffering effect for the cable body 100 to avoid collision; in addition, in some embodiments of the present invention, the deformation buffer space 203b has a variety of structural forms, for example, it can be a groove body excavated on the upper surface of the cable support groove 203a, or it can be as Figure 2 As shown in FIG. 2 , thickened portions are provided on both sides of the rubber pad 213 so that a certain space is provided between the arc-shaped portion of the rubber pad 213 and the wire supporting groove 203 a.

[0036] In some embodiments of the present invention, the support platform 203 can be an integral structure connected to the central axis 201, or a detachable split structure for easy maintenance and replacement; please continue to refer to Figure 1 , the central axis 201 is also rotatably connected with a connecting arm 204, the connecting arm 204 is located on both sides of the supporting wheel 202, the support platform 203 is fixed to the connecting arm 204, and a locking structure 205 for limiting the rotation angle of the connecting arm 204 is provided between the connecting arm 204 and the central axis 201. The locking structure 205 is used to limit the lifting position of the support platform 203. It should be pointed out here that in some embodiments of the present invention, the lifting position of the support platform 203 can be a lifting method with a certain downward bending angle, in which case the angle between the two support platforms 203 is an obtuse angle, or the two support platforms 203 can be coplanar to achieve the lifting protection of the cable body 100, and those skilled in the art can make a choice according to actual needs.

[0037] For the specific structure of the locking structure 205 in the embodiment of the present invention, please refer to Figures 3 to 7 , including a slideway 215 axially arranged on the central axis 201 and a locking plate 225 axially slidably arranged on the slideway 215, a locking block 225a protruding from the surface of the central axis 201 corresponding to the position of the connecting arm 204 is arranged on the locking plate 225, and the connecting arm 204 has a through hole 204a for sleeved on the central axis 201, and the inner wall of the through hole 204a has a slot 204b corresponding to the locking block 225a. Figure 4 and Figure 5As shown in , when the locking plate 225 moves along the axial direction of the central axis 201, if the locking block 225a enters the slot 204b of the connecting arm 204, the connecting arm 204 cannot continue to rotate. When the locking block 225a leaves the slot 204b, the connecting arm 204 can resume free rotation. It should be pointed out here that in the embodiment of the present invention, the number of the slots 204b is not limited. A plurality of slots 204b can be provided to achieve positioning at different angles, or only one slot can be provided to lock the support platform 203 when lifting, or as shown in FIG. Figure 4 As shown in the figure, two slots 204b are provided, one of which is used for lifting, and the other is used for locking the support platform 203 when it is idle. The axial movement of the lock plate 225 can be achieved by limiting and spring connection, and the axial movement unlocking and releasing and resetting can be achieved by pressing the lock plate 225.

[0038] Alternatively, if Figure 4 and Figure 7 As shown in the figure, in order to further improve the reliability of locking, the lock block 225a is provided with an insert edge 225b extending toward the side, and a secondary groove 204c is provided on the side wall of the slot 204b, and the insert edge 225b is provided corresponding to the secondary groove 204c. By inserting the insert edge 225b into the secondary groove 204c, the stability of locking can be further improved.

[0039] In some embodiments of the present invention, in order to further improve the stability and force uniformity during lifting, the lifting position of the two brackets 203 is the position when the two brackets are horizontally coplanar, and the UHV cable laying device also includes a buckle mechanism 300 that presses on the two brackets 203 and the supporting wheel 202 when the two brackets 203 are in the lifting position. Figure 8 As shown in the figure, by pressing the buckle mechanism 300 onto the two supports 203 and the support wheel 202, the cable body 100 can overcome the bending caused by its own gravity, further increasing the contact area with the support 203, thereby achieving better protection.

[0040] Optionally, regarding the specific structural form of the buckle mechanism 300, such as Fig. 9 As shown in the figure, the buckle mechanism 300 includes a pressing plate 301 and a buckle 301a arranged at the bottom of the pressing plate 301, and a buckle groove 203c corresponding to the buckle 301a is also provided on the side wall of the support platform 203. After the two support platforms 203 are locked on the same plane, the pressing plate 301 is pressed down so that the buckle 301a is buckled in the buckle groove 203c. The buckle 301a structure is a common structure in the prior art and will not be described in detail here.

[0041] In some embodiments of the present invention, please continue to refer to Fig. 9At least one pressing edge 302 is also provided at the bottom of the pressing plate 301, and the support platform 203 has a pressing groove arranged in a direction perpendicular to the wire support groove 203a. When the buckle 301a is buckled into the buckle groove 203c, the pressing edge 302 extends into the pressing groove. It should be noted here that, if Fig. 9 As shown in , there may be multiple pressing grooves and pressing edges 302 . In some embodiments of the present invention, the pressing edge 302 may be made of hard rubber, which can ensure the pressing effect on the one hand and avoid damage to the cable body 100 on the other hand.

[0042] Please refer to Figure 8 and Fig.10 In some embodiments of the present invention, a support mechanism 400 is further included, the support mechanism 400 includes a bracket 401 and a base 402 which is adjustable in height in the vertical direction of the bracket 401, the central axis 201 is fixedly connected to the base 402, and the pressing plate 301 is rotatably connected to the base 402. The rotatable connection of the pressing plate 301 can facilitate the opening and closing of the pressing plate 301, that is, Figure 8 As shown in, in some embodiments of the present invention, one end of the pressing plate 301 is rotatably connected to the base 402, and the other end is buckled by a buckle 301a structure; through the setting of this structural form, it is convenient to open the pressing plate 301, and the pressing plate 301 is against the bracket 401 after opening, without affecting the rotation of the supporting wheel 202; Regarding the adjustable height of the base 402, in some embodiments of the present invention, in order to simplify processing and manufacturing, such as Fig.10 As shown in , the bracket 401 has a plurality of vertically spaced long holes 401a, the top of the base 402 has a right-angled clamping plate 402a that can be inserted into the long hole 401a, and the bottom of the base 402 has an arc-shaped plate 402b that can be inserted into the long hole 401a. In this way, when it is necessary to adjust the height of the base 402, the base 402 is first rotated from the bottom toward the direction away from the bracket 401 with the right-angle side of the right-angled clamping plate 402a as the center, so that the base 402 can be separated, and then the right-angled clamping plate 402a is inserted into the required long hole 401a, and then the arc-shaped plate 402b is inserted into the corresponding long hole 401a. By setting this structural form, the reliability of the fixation of the base 402 can be guaranteed, and the position adjustment of the base 402 is also convenient.

[0043] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A UHV cable laying device, characterized in that: include: A lifting mechanism, the lifting mechanism comprising a central axis and at least one supporting wheel rotatably connected to the central axis, the lifting mechanism further comprising supporting platforms rotatably connected to the central axis and disposed on both sides of the supporting wheel, and the rotation angles of the two supporting platforms on the central axis are adjustable; The two supports are configured so that when laying the cable, the free ends thereof are adjusted to be away from the contact surface between the cable and the supporting wheel; when laying stops, the free ends of the two supports are reversely adjusted to contact with the cable to lift the cable.

2. The UHV cable laying device according to claim 1, characterized in that: The supporting wheel is provided with a roller groove, and the supporting platform is provided with wire supporting grooves whose number corresponds to the number of the supporting wheels.

3. The UHV cable laying device according to claim 2, characterized in that: A rubber pad is provided in the wire supporting groove, and a deformation buffer space is provided between the rubber pad and the wire supporting groove.

4. The UHV cable laying device according to claim 1, characterized in that: The central axis is also rotatably connected to a connecting arm, the connecting arm is located on both sides of the supporting wheel, the supporting platform is fixed to the connecting arm, and a locking structure for limiting the rotation angle of the connecting arm is provided between the connecting arm and the central axis.

5. The UHV cable laying device according to claim 4, characterized in that: The locking structure includes a slideway axially arranged on the central axis and a locking plate axially slidably arranged on the slideway, a locking block protruding from the surface of the central axis is arranged on the locking plate corresponding to the position of the connecting arm, the connecting arm has a through hole for being sleeved on the central axis, and the inner wall of the through hole has a locking groove arranged corresponding to the locking block.

6. The UHV cable laying device according to claim 5, characterized in that: The locking block is provided with an inserting edge extending toward the side, a side wall of the card slot is provided with a secondary slot, and the inserting edge is provided corresponding to the secondary slot.

7. The UHV cable laying device according to claim 4, characterized in that: The lifting position of the two supports is the position when the two supports are horizontally coplanar. The UHV cable laying device also includes a pressing mechanism that presses on the two supports and the supporting wheel when the two supports are in the lifting position.

8. The UHV cable laying device according to claim 7, characterized in that: The buckle mechanism comprises a pressing plate and a buckle arranged at the bottom of the pressing plate, and a buckle groove corresponding to the buckle is also provided on the side wall of the support platform.

9. The UHV cable laying device according to claim 8, characterized in that: The bottom of the pressing plate is also provided with at least one pressing edge, and the support platform has a pressing groove arranged in a direction perpendicular to the wire supporting groove. When the buckle is buckled into the buckle groove, the pressing edge extends into the pressing groove.

10. The UHV cable laying device according to claim 8, characterized in that: It also includes a supporting mechanism, which includes a bracket and a base with adjustable height in the vertical direction of the bracket, the central axis is fixedly connected to the base, the pressure plate is rotatably connected to the base, the bracket has a plurality of vertically spaced long holes, the top of the base has a right-angle clamping plate that can be inserted into the long hole, and the bottom of the base has an arc-shaped plate that can be extended into the long hole.

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