Embedded disc cable pay-off pulley yoke

Abstract

The invention relates to the technical field of cable pay-off racks, and discloses an embedded disc cable pay-off pulley yoke which comprises a cable well vertically extending in the Y-axis direction, and a well lid groove is formed in an opening in the upper end of the cable well; the frame body part is erected in the well lid groove and comprises an annular seat, the annular seat is provided with a guide wheel for changing the conveying direction of the cable, and the cable conveyed along the X axis can be guided to the Y axis direction; a cable passing hole is formed in the axis of the annular base, the cable passing hole and the cable well are kept coaxial, the cable passing hole is used for providing restraining force for a cable conveyed along the Y axis, and a resistance reducing assembly is arranged in the cable passing hole; the cable well does not need to be changed, the well lid groove is directly used for erecting, the punching step is omitted, and installation is convenient and flexible; the resistance reducing assembly can reduce friction while restraining the swing amplitude of the cable, so that the cable is protected, the pay-off efficiency is improved, the problems of uneven stress of the guide wheel and cable abrasion are avoided, and potential safety hazards are effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of cable laying frame technology, and in particular to an embedded disc cable laying pulley frame. Background Technology

[0002] Cable laying frame is an adjustable support and guiding device specifically designed for cable well laying, commonly known as "wellhead cable laying frame" or "lowering cable laying frame"; Traditional cable laying pulley designs have several drawbacks, mainly including the following aspects: First, the pulley fixing method is simple and the stability is poor: the existing pulleys are all fixed at a fixed point in the cable well and installed. During the cable laying process, the pulley is subjected to uneven force due to the different left and right swing amplitudes of the cable, which causes the pulley fixing point to loosen. It is necessary to fix the pulley repeatedly, which increases the workload and reduces the flexibility of operation. In actual construction, many construction workers find it troublesome and would rather increase the difficulty of laying the cable and give up using pulleys. Secondly, the cable is prone to slipping off the pulley, causing safety hazards: the design of traditional pulleys does not fully consider the stable cooperation between the cable and the pulley, which causes the cable to fall off the pulley due to uneven force during use and come into direct contact with the cable well opening, thereby increasing the wear intensity of the cable insulation layer and creating safety hazards for later operation. Summary of the Invention

[0003] In view of the problems existing in the above-mentioned embedded disc cable laying pulley frame, the present invention is proposed.

[0004] The above-mentioned technical problems are solved by the following technical solution: This invention proposes an embedded circular cable laying pulley frame, comprising, The cable well extends vertically along the Y-axis and has a manhole cover groove at its upper opening. The frame is installed in the manhole cover groove and includes an annular seat. The annular seat is equipped with a guide wheel that carries the cable conveying direction change, which can guide the cable conveyed along the X-axis to the Y-axis direction to ensure that it enters the cable well accurately. The annular seat has a cable passage hole at its axis. The cable passage hole is coaxial with the cable well and is used to provide a constraint force on the cable being transported along the Y-axis. This can prevent the cable from swaying unnecessarily during transport and thus prevent uneven force on the guide wheel. A resistance-reducing component is provided inside the cable passage hole. The resistance-reducing component has a through hole. When the cable passes through the through hole along the Y-axis, the resistance-reducing component will fit tightly against the outer wall of the cable to reduce the resistance encountered by the cable during the passage through the cable passage hole.

[0005] In a preferred embodiment of the embedded disc cable laying pulley frame of the present invention: the annular seat includes an annular skeleton, and upper and lower ring plates are respectively mounted on the upper and lower sides of the annular skeleton. The upper and lower ring plates are provided with a plurality of weight-reducing holes to reduce the overall weight of the annular seat.

[0006] In a preferred embodiment of the embedded disc cable laying pulley frame of the present invention: the guide wheel is mounted on the outer edge of the upper ring plate through a U-shaped frame, and the guide wheel is rotatably mounted on the inner side of the U-shaped frame.

[0007] In a preferred embodiment of the embedded disc cable laying pulley frame of the present invention: through holes formed at the center of the annular frame, the upper ring plate and the lower ring plate form cable passage holes.

[0008] In a preferred embodiment of the embedded disc cable laying pulley frame of the present invention: the resistance reduction component includes three obtuse-angled frames; The three obtuse-angled frames are arranged in a triangular pattern and assembled on the inner circumference of the perforation of the upper ring plate. Rollers are rotatably installed between the opposing inclined surfaces on the outer sides of two adjacent obtuse-angled frames.

[0009] In a preferred embodiment of the embedded disc cable feeding pulley frame of the present invention: the gap between the three rollers forms a through hole. When the cable is conveyed along the Y-axis direction through the through hole, all three rollers are in contact with the outer wall of the cable and will rotate with the power generated by the movement of the cable, thereby reducing the resistance encountered by the cable during the movement.

[0010] In a preferred embodiment of the embedded disc cable laying pulley frame of the present invention: the bottom of the lower ring plate is provided with support portions at equal intervals, the bottom of the support portions being in contact with the bottom of the manhole cover groove, for supporting the frame portion at the upper opening of the cable well.

[0011] In a preferred embodiment of the embedded disc cable laying pulley frame of the present invention: the support part includes at least four support rods, the four support rods are assembled in a cross shape at the bottom of the lower ring plate, and a pad is installed at the bottom of each support rod away from the lower ring plate.

[0012] In a preferred embodiment of the embedded disc cable laying pulley frame of the present invention: the support rod includes a sleeve rod and an extension rod. The extension rod is slidably mounted in the inner cavity of the sleeve rod. By changing the extension amount of the extension rod relative to the sleeve rod, the overall length of the support rod can be linearly adjusted to adapt to the span of cable wells of different specifications and sizes.

[0013] In a preferred embodiment of the embedded disc cable laying pulley frame of the present invention: a locking element is provided between the sleeve rod and the extension rod for rigid locking after the extension rod is adjusted, so as to avoid the problem of unstable support due to shaking during support.

[0014] The beneficial effects of this invention are as follows: This invention does not require any modification to the cable well, and can be directly installed using the well cover groove, eliminating the drilling step and making installation convenient and flexible; its resistance-reducing component can constrain the cable swing amplitude while reducing friction, which not only protects the cable and improves the cable laying efficiency, but also avoids the problems of uneven force on the guide wheel and cable wear, effectively reducing safety hazards. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein: Figure 1 A three-dimensional structural diagram of an embedded disc cable delivery pulley frame is shown; Figure 2 A structural diagram of the frame portion of the embedded disc cable laying pulley frame is shown; Figure 3 A structural diagram of the annular seat in the embedded disc cable delivery pulley frame is shown; Figure 4 A structural diagram of the resistance-reducing component in the embedded disc cable delivery pulley frame is shown; Figure 5 A structural diagram of the support portion in the embedded disc cable delivery pulley frame is shown; Figure 6 A structural diagram of the support rod in the embedded disc cable laying pulley frame is shown.

[0016] Figure 7 A schematic diagram is shown of an embedded disc cable laying pulley frame applied to a rectangular cable well.

[0017] Reference numerals: 1. Cable well; 11. Well cover groove; 2. Frame body; 21. Ring seat; 211. Ring frame; 212. Upper ring plate; 213. Lower ring plate; 214. Weight reduction hole; 22. Guide wheel; 23. Cable passage hole; 24. Resistance reduction assembly; 241. Obtuse angle frame; 242. Roller; 25. Through hole; 26. U-shaped frame; 27. Lifting ring; 28. Moving wheel; 3. Support part; 31. Support rod; 311. Sleeve rod; 312. Extension rod; 313. Locking element; 3131. Positioning hole; 3132. Positioning pin. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0020] Reference Figure 1-3 This embodiment provides an embedded circular cable laying pulley frame, including, Cable well 1 extends vertically along the Y-axis direction, and has a well cover groove 11 at its upper opening; It should be noted that when operators lower cables into cable well 1, they install a pulley at the wellhead of cable well 1 using expansion bolts. The pulley converts the horizontally conveyed cable into a vertical position and sends it into cable well 1. However, the vertically conveyed cable will swing, which will cause uneven force on the pulley, making it easy for the bolts to loosen. It is also easy for the cable to detach from the pulley, causing the cable to come into contact with the wellhead, increasing the wear intensity of the cable insulation layer and creating a safety hazard for later operation. Therefore, this application adopts a frame part 2, which is installed in the manhole cover groove 11. It includes an annular seat 21, and the annular seat 21 is provided with a guide wheel 22 that undertakes the change of the cable conveying direction. It can guide the cable conveyed along the X-axis to the Y-axis direction to ensure that it accurately enters the cable well 1. This design is more flexible to use and only needs to be installed in the manhole cover groove 11, which solves the drawback of fixing the pulley with bolt holes. To alleviate the instability of the vertically transported cable, a cable passage hole 23 is provided at the axis of the annular seat 21. The cable passage hole 23 is coaxial with the cable well 1 and is used to provide a constraint force on the cable transported along the Y-axis. This can prevent the cable from generating unnecessary sway during transport and thus prevent the guide wheel 22 from experiencing uneven force.

[0021] The design cleverly adapts the frame part 2 to the original manhole cover groove 11 of the cable well 1, which not only eliminates the cumbersome method of fixing pulleys with expansion bolts in the traditional way, but also saves the step of drilling holes at the manhole opening, improving the convenience and flexibility of installation, enabling operators to quickly complete the erection work and saving a lot of construction time. Meanwhile, the coaxial arrangement of the cable passage hole and the cable well 1 provides a stable constraint for the vertically transported cable, curbing the cable sway. This not only effectively avoids the problem of bolt loosening caused by uneven force on the guide wheel 22, but also solves the problem of insulation wear caused by the cable coming into contact with the well opening after leaving the pulley. This fundamentally reduces the safety hazards of the cable operation in the later stage and provides a solid guarantee for the safe transportation and long-term stable operation of the cable. Furthermore, the design requires no structural modifications to the cable well 1 itself, thus preserving the integrity of the original facilities.

[0022] A preferred embodiment: The annular seat 21 includes an annular frame 211, with an upper ring piece 212 and a lower ring piece 213 respectively mounted on the upper and lower surfaces of the annular frame 211. The annular frame 211 is made of steel. Several weight-reducing holes 214 are provided on the upper ring piece 212 and the lower ring piece 213 to reduce the overall weight of the annular seat 21. Through holes formed at the axis of the annular frame 211, the upper ring piece 212 and the lower ring piece 213 form cable passage holes 23 for passing cables. The upper ring plate 212 and the lower ring plate 213 are made of 5mm thick stainless steel. Their surfaces are treated with powder coating to form a dense protective film, which increases corrosion resistance and acid and alkali resistance, effectively extending service life.

[0023] A preferred embodiment: The guide wheel 22 is mounted on the outer edge of the upper ring plate 212 via a U-shaped frame 26, and the guide wheel 22 is rotatably mounted on the inner side of the U-shaped frame 26. The U-shaped frame 26 is symmetrically provided with rotating holes of different heights. The guide wheel 22 is mounted in the rotating holes of different heights according to the height via a shaft. This design allows for flexible adjustment of the installation position of the guide wheel 22 according to the diameter of the cable and the conveying height, ensuring that the guide wheel 22 and the cable always maintain the best contact state. This avoids cable conveying jams or deviations caused by unsuitable heights, and reduces frictional losses between the guide wheel 22 and the cable through reasonable height matching, further improving the stability and smoothness of the cable conveying process. At the same time, it enhances the adaptability of the overall structure and can meet the cable laying requirements of different specifications of cables.

[0024] A preferred embodiment: At least four lifting rings 27 are mounted on the upper ring plate 212, and the lifting rings 27 are connected to the lifting rope of the crane. The embedded disc cable laying pulley frame is stably placed in the manhole cover groove 11 of the cable well 1 by the lifting of the crane. Four movable wheels 28 are equidistantly installed at the bottom of the lower ring plate 213. The four movable wheels 28 are two directional wheels and two omnidirectional wheels. The four movable wheels 28 can support the embedded disc cable laying pulley frame, enabling it to move and play a convenient role in the circulation process.

[0025] As an optional embodiment: Reference Figure 4 In one embodiment provided in this application, a resistance-reducing component 24 is provided in the cable passage hole 23. The resistance-reducing component 24 is provided with a through hole 25. When the cable passes through the through hole 25 along the Y-axis direction, the resistance-reducing component 24 will fit tightly against the outer wall of the cable, thereby reducing the resistance encountered by the cable in the process of passing through the cable passage hole 23. The drag reduction assembly 24 includes three obtuse-angle brackets 241; Three obtuse-angled brackets 241 are arranged in a triangular pattern and assembled on the inner circumference of the perforation of the upper ring plate 212. Rollers 242 are rotatably installed between the opposing inclined surfaces on the outer sides of two adjacent obtuse-angled brackets 241.

[0026] Specifically, the roller 242 adopts a cylindrical structure with the smallest diameter in the middle section, which increases symmetrically towards both ends along the axis to form a concave arc-shaped generatrix rotating body. The gap between the three rollers 242 forms a through hole 25. When the cable is conveyed along the Y-axis direction through the through hole 25, all three rollers 242 are in contact with the outer wall of the cable and will rotate with the power generated by the movement of the cable, thereby reducing the resistance encountered by the cable during the movement.

[0027] The design combines three obtuse-angled brackets 241 arranged in a triangular pattern with rollers 242 to create a through hole 25 that fits the shape of the cable. The concave arc-shaped rollers 242 can closely fit the outer wall of cables of different diameters, ensuring a stable three-point contact with the cable. When the cable is being transported, the rollers 242 rotate synchronously with the cable, converting sliding friction into rolling friction. This significantly reduces the resistance when the cable passes through the cable guide hole, preventing the cable from experiencing sheath wear or transport obstruction due to excessive friction. At the same time, the triangularly distributed rollers 242 have good radial restraint capabilities, which further limit the radial sway of the cable while reducing resistance, ensuring that the cable is always transported stably along the axial direction. This not only improves the cable feeding efficiency but also provides double protection for the cable.

[0028] As an optional embodiment: Reference Figure 5-7 In one embodiment provided in this application, the bottom of the lower ring 213 is provided with support portions 3 at equal intervals. The bottom of the support portions 3 fits into the bottom of the manhole cover groove 11 and is used to support the frame portion 2 at the upper opening of the cable well 1.

[0029] The support part 3 includes at least four support rods 31, which are arranged in a cross shape and assembled at the bottom of the lower ring piece 213. A gasket 32 ​​is installed at the bottom of each support rod 31 away from the lower ring piece 213.

[0030] The support rod 31 includes a sleeve rod 311 and an extension rod 312. The extension rod 312 is slidably mounted in the internal cavity of the sleeve rod 311. By changing the extension amount of the extension rod 312 relative to the sleeve rod 311, the overall length of the support rod 31 can be linearly adjusted to adapt to the span of cable wells 1 of different specifications and sizes.

[0031] A locking element 313 is provided between the sleeve rod 311 and the extension rod 312 to rigidly lock the extension rod 312 after adjustment, so as to avoid the problem of unstable support due to shaking during support.

[0032] Specifically, the locking component 313 includes a positioning hole 3131 and a positioning pin 3132. The positioning hole 3131 is equidistantly opened on the upper surface of the extension rod 312 along its length direction. The positioning pin 3132 is movably assembled at the end of the sleeve rod 311. A through hole is opened on the surface of the lower ring plate 213 at the position corresponding to the positioning pin 3132. When it is necessary to adapt to the span of different specifications of cable wells 1, the positioning pin 3132 at the end of the sleeve rod 311 is first pulled out to release the locking of the extension rod 312. Then, according to the actual size of the cable well cover groove 11, the extension rod 312 is slid along the internal cavity of the sleeve rod 311 to adjust its extension amount to change the overall length of the support rod 31. After the length is adjusted to the point that the bottom pad 32 of the support part 3 can stably fit the bottom of the well cover groove 11, the positioning pin 3132 is inserted into the positioning hole 3131 at the corresponding position at the end of the sleeve rod 311 to complete the rigid locking of the extension rod 312 and ensure that the length of the support rod 31 is fixed. The support section, with its adjustable-length support rod 31, can flexibly adapt to the span of cable wells of different sizes, eliminating the need for separate customization for cable wells of specific specifications, thus greatly improving the versatility and applicability of the equipment. It should be noted that the existing cable wells 1 can be classified into rectangular cable wells and circular cable wells according to their planar shape. Regardless of the difference between the long and short sides of the rectangular cable well or the radial dimension variation of the circular cable well, the four support rods 31 distributed in a cross shape can be adjusted independently to make the bottom pad 32 fit precisely into the bottom of the manhole cover groove 11 of different shaped cable wells 1. For rectangular cable wells, the length of the support rods 31 in the corresponding long and short side directions can be adjusted to ensure that the frame part 2 forms stable support at the four corners of the rectangular well opening. For circular cable wells, the extension of the four support rods 31 can be adjusted evenly to meet the support requirements of the arc-shaped well opening. This allows the frame part 2 to be compatible with various planar cable well shapes, further reducing the adaptation cost of construction equipment and improving the flexibility of on-site operations.

[0033] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. An embedded circular cable delivery pulley frame, characterized in that: include, The cable well (1) extends vertically along the Y-axis and has a well cover groove (11) at its upper opening. The frame part (2) is installed in the manhole cover groove (11). It includes an annular seat (21). The annular seat (21) is provided with a guide wheel (22) that undertakes the change of cable conveying direction, which can guide the cable conveyed along the X-axis to the Y-axis direction, ensuring that it accurately enters the cable well (1). The annular seat (21) has a wire hole (23) at its axis. The wire hole (23) is coaxial with the cable well (1) and is used to provide a constraint force for the cable being transported along the Y-axis. This can prevent the cable from swaying unnecessarily during transport and thus prevent the guide wheel (22) from experiencing uneven force. The cable passage hole (23) is provided with a resistance reduction component (24), and the resistance reduction component (24) is provided with a through hole (25). When the cable passes through the through hole (25) along the Y-axis, the resistance reduction component (24) will fit tightly against the outer wall of the cable, thereby reducing the resistance encountered by the cable in the process of passing through the cable passage hole (23).

2. The embedded circular cable laying pulley frame according to claim 1, characterized in that: The annular seat (21) includes an annular frame (211), and an upper ring plate (212) and a lower ring plate (213) are respectively mounted on the upper and lower sides of the annular frame (211). The upper ring plate (212) and the lower ring plate (213) are provided with a number of weight-reducing holes (214) to reduce the overall weight of the annular seat (21).

3. The embedded disc cable delivery pulley frame according to claim 2, characterized in that: The guide wheel (22) is mounted on the outer edge of the upper ring plate (212) via the U-shaped frame (26), and the guide wheel (22) is rotatably mounted on the inner side of the U-shaped frame (26).

4. The embedded disc cable delivery pulley frame according to claim 3, characterized in that: The perforations opened at the center of the annular frame (211), the upper ring plate (212) and the lower ring plate (213) form a cable passage hole (23) for the cable to pass through.

5. The embedded disc cable delivery pulley frame according to claim 4, characterized in that: The drag reduction assembly (24) includes three obtuse-angle brackets (241); The three obtuse angle brackets (241) are arranged in a triangular distribution and assembled on the inner circumference of the perforation of the upper ring plate (212). Rollers (242) are rotatably installed between the opposing inclined surfaces on the outer sides of two adjacent obtuse angle brackets (241).

6. The embedded disc cable delivery pulley frame according to claim 5, characterized in that: The gap between the three rollers (242) forms a through hole (25). When the cable is conveyed along the Y-axis through the through hole (25), the three rollers (242) are in contact with the outer wall of the cable and will rotate with the power generated by the movement of the cable, thereby reducing the resistance encountered by the cable during its movement.

7. The embedded disc cable delivery pulley frame according to claim 6, characterized in that: The bottom of the lower ring plate (213) is provided with support parts (3) at equal intervals. The bottom of the support parts (3) fits the bottom of the manhole cover groove (11) and is used to support the frame part (2) at the upper opening of the cable well (1).

8. The embedded disc cable delivery pulley frame according to claim 7, characterized in that: The support part (3) includes at least four support rods (31), which are arranged in a cross shape and assembled at the bottom of the lower ring plate (213). A gasket (32) is installed at the bottom of each support rod (31) away from the lower ring plate (213).

9. The embedded disc cable delivery pulley frame according to claim 8, characterized in that: The support rod (31) includes a sleeve rod (311) and an extension rod (312). The extension rod (312) is slidably mounted in the internal cavity of the sleeve rod (311). By changing the extension amount of the extension rod (312) relative to the sleeve rod (311), the overall length of the support rod (31) can be linearly adjusted.

10. The embedded disc cable delivery pulley frame according to claim 9, characterized in that: A locking element (313) is provided between the sleeve rod (311) and the extension rod (312).

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