Labor-saving pulley mechanism for laying cable

Abstract

The utility model discloses a manpower-saving pulley mechanism for laying a cable, and relates to the technical field of power construction, in particular to the manpower-saving pulley mechanism for laying the cable, which comprises a mounting seat, and the mounting seat is provided with the pulley mechanism and is used for supporting and conducting in the cable laying process. The pulley mechanism comprises a main body assembly which comprises a base fixed to the left end and the right end of the top of a mounting base, vertical frames fixed to the upper ends of the two sides of the base, shaft brackets pivoted to the upper ends and the lower ends of the inner walls of the vertical frames, pulleys rotationally mounted between the ends of the shaft brackets on the left side and the right side, guide grooves formed in the ends, away from the pulleys, of the shaft brackets, and knob bolts mounted on the vertical frames in a threaded mode; the guide frame is rotationally mounted at the end part of the knob bolt; through the installation heads in the four directions, self-centering positioning is carried out on the cable penetrating through the positions between the corresponding balls, the cable between the upper pulley and the lower pulley is limited, and deviation and disengagement caused by shaking in the cable paying-off process are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power construction, in particular to a pulley mechanism for laying cables which saves manpower. Background Art

[0002] The laying of power cables and their routine operation and maintenance involve the laying of large-sized cables. Since high-voltage cables encounter difficulties in turning through bridges or cable wells during laying, corner pulleys are required.

[0003] According to the publication number: CN214590224U, a corner pulley device for laying cables is disclosed. This technology discloses "a corner pulley device for laying cables, including a supporting base and a supporting vertical frame, the lower end of the supporting vertical frame is connected to the supporting base, the supporting base is provided with a plurality of limiting pulleys, the limiting pulleys are respectively arranged on both sides of the supporting vertical frame, and the supporting vertical frame is provided with a corner pulley" and other technical solutions. It has the technical effects of "being able to limit the front and rear corners of laying cables, shortening construction time, saving engineering costs, and ensuring the quality of cable laying";

[0004] During cable laying operations, the cable often swings during pay-out. Traditional pulley structures generally consist of a simple rotating roller, whose main function is to reduce friction on the cable during pay-out. However, in actual use, the cable can easily detach from the pulley, or even get stuck on its shaft, due to the continuous swinging of the cable. This situation not only requires workers to frequently rearrange the cable on the pulley, causing them great trouble and extra workload, but also greatly reduces work efficiency, making the entire cable laying process very inconvenient. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a manpower-saving pulley mechanism for laying cables, which has the characteristics of self-centering positioning through the cables passing through the corresponding ball pairs through the installation heads in four directions, and limiting the position of the cables between the upper and lower pulley pairs to avoid deviation and disengagement caused by shaking during cable laying.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pulley mechanism for laying cables that saves manpower, including a mounting seat, on which a pulley mechanism is provided for supporting and conducting the cables during laying. The pulley mechanism includes:

[0007] The main assembly includes a base fixed at both left and right ends of the top of the mounting seat, a vertical frame fixed at both upper ends of the base, an axis frame pivotally connected to the upper and lower ends of the inner wall of the vertical frame, a pulley rotatably mounted between the ends of the left and right axis frames, a guide groove provided inside the end of the axis frame away from the pulley, a knob bolt threadedly mounted on the vertical frame, a guide frame rotatably mounted at the end of the knob bolt, and guide rods mounted at both ends of the inner wall of the guide frame;

[0008] The limiting component is arranged on the main body component and is used to position the cable.

[0009] Preferably, the guide rod is rotatably mounted on the guide frame, and the guide rod passes through the guide groove.

[0010] Preferably, the limiting assembly includes a mounting plate fixed between the two side frames, four equally distributed slides slidably mounted inside the mounting plate, a mounting block fixed at the outer end of the slide, a mounting head mounted on the upper end of the mounting block, a ball mounted inside the mounting head, an externally threaded cylinder fixed at the center of the inner end of the mounting plate, an internally threaded sleeve threadedly mounted on the externally threaded cylinder, a shaft sleeve rotatably mounted on the internally threaded sleeve, and four equally distributed first struts and four second struts pivotally connected to the outer wall of the shaft sleeve.

[0011] Preferably, the limiting assembly further includes a handwheel fixed to the outer wall of the end portion of the internally threaded sleeve, and the externally threaded barrels on the left and right sides are fixedly connected.

[0012] Preferably, the limiting assembly further includes a threaded hole formed inside the upper end of the mounting block, and a threaded head fixed at the lower end of the mounting head and matched with the threaded hole.

[0013] Preferably, one end of the first support rod and the second support rod away from the shaft sleeve are both pivotally connected to the corresponding sliding bracket, and the first support rod and the second support rod are parallel to each other.

[0014] Beneficial effects

[0015] The utility model provides a manpower-saving pulley mechanism for laying cables. Compared with the prior art, it has the following advantages:

[0016] (1) The guide frame is driven to move by rotating the knob bolt, and the guide frame drives the upper and lower axis frames to rotate synchronously in opposite directions through the guide rods on both sides. In addition, when the guide frame drives the axis frame to rotate through the guide rods, the guide rods slide along the inside of the guide groove, and the cables between the axis frames on both sides are limited by the pulleys to avoid shaking and displacement during the cable release process.

[0017] (2) The internal threaded sleeve is driven to rotate by rotating the hand wheel, and the internal threaded sleeve drives the shaft sleeve to move at the same time. When the shaft sleeve moves, the slide is driven to move by the first support rod and the second support rod, and the slide drives the mounting head to move through the mounting block, so that the mounting heads in the four directions are self-centered and positioned by the cables passing through the corresponding ball pairs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the split structure of the pulley mechanism in the utility model;

[0020] Figure 3 This is a schematic structural diagram of the position limiting assembly in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the mounting head and the mounting block in the utility model.

[0022] In the figure: 1. Mounting seat; 2. Pulley mechanism; 21. Main body assembly; 211. Base; 212. Stand; 213. Axle frame; 214. Pulley; 215. Guide groove; 216. Knob bolt; 217. Guide frame; 218. Guide rod; 22. Limiting assembly; 221. Mounting plate; 222. Slide; 223. Mounting block; 224. Threaded hole; 225. Mounting head; 226. Ball bearing; 227. Threaded head; 228. Externally threaded barrel; 229. Internally threaded sleeve; 2210. Handwheel; 2211. Sleeve; 2212. First support rod; 2213. Second support rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-4 The utility model provides a technical solution of a pulley mechanism for laying cables in a manpower-saving manner: a pulley mechanism for laying cables in a manpower-saving manner, comprising a mounting base 1, a pulley mechanism 2 provided on the mounting base 1 and used for supporting and conducting the cable during laying, the pulley mechanism 2 comprising:

[0025] The main assembly 21 includes a base 211 fixed at both left and right ends of the top of the mounting base 1, a stand 212 fixed at both upper ends of the base 211, an axis frame 213 pivotally connected to the upper and lower ends of the inner wall of the stand 212, a pulley 214 rotatably mounted between the ends of the left and right axis frames 213, a guide groove 215 defined within the end of the axis frame 213 away from the pulley 214, a knob bolt 216 threadedly mounted on the stand 212, a guide frame 217 rotatably mounted at the end of the knob bolt 216, and guide rods 218 mounted at both ends of the inner wall of the guide frame 217;

[0026] The limiting component 22 is provided on the main component 21 and is used to position the cable.

[0027] In this embodiment, the guide frame 217 is driven to move by rotating the knob bolt 216, and the guide frame 217 drives the upper and lower axis frames 213 to rotate synchronously in opposite directions through the guide rods 218 on both sides. The axis frames 213 on both sides limit the cables between them through the pulleys 214 to avoid shaking and displacement of the cables during the cable laying process.

[0028] Specifically, the guide rod 218 is rotatably mounted on the guide frame 217 , and the guide rod 218 passes through the guide groove 215 .

[0029] In this embodiment, when the guide frame 217 drives the shaft frame 213 to rotate via the guide rod 218 , the guide rod 218 slides along the inside of the guide groove 215 .

[0030] Specifically, the limiting assembly 22 includes a mounting plate 221 fixed between the two side frames 212, four equally distributed slides 222 slidably installed inside the mounting plate 221, a mounting block 223 fixed at the outer end of the slide 222, a mounting head 225 installed at the upper end of the mounting block 223, a ball 226 installed inside the mounting head 225, an externally threaded tube 228 fixed at the center of the inner end of the mounting plate 221, an internally threaded sleeve 229 threadedly mounted on the externally threaded tube 228, a shaft sleeve 2211 rotatably mounted on the internally threaded sleeve 229, and four equally distributed first struts 2212 and four second struts 2213 pivotally connected to the outer wall of the shaft sleeve 2211.

[0031] In this embodiment, when the sleeve 2211 moves, the slide 222 is driven to move by the first support rod 2212 and the second support rod 2213, and the slide 222 drives the mounting head 225 to move through the mounting block 223, so that the mounting heads 225 in four directions can perform self-centering positioning of the cables passing through the corresponding balls 226.

[0032] Specifically, the limiting assembly 22 further includes a handwheel 2210 fixed to the outer wall of the end of the internal threaded sleeve 229, and the external threaded cylinders 228 on the left and right sides are fixedly connected.

[0033] In this embodiment, the internal threaded sleeve 229 is driven to rotate by rotating the hand wheel 2210 , and at the same time, the internal threaded sleeve 229 drives the shaft sleeve 2211 to move.

[0034] Specifically, the limiting assembly 22 further includes a threaded hole 224 formed inside the upper end of the mounting block 223 , and a threaded head 227 fixed at the lower end of the mounting head 225 and matched with the threaded hole 224 .

[0035] In this embodiment, the mounting head 225 can be disassembled and assembled with the mounting block 223 , so that the mounting head 225 can be easily replaced.

[0036] Specifically, one end of the first support rod 2212 and the second support rod 2213 away from the shaft sleeve 2211 are both pivotally connected to the corresponding sliding bracket 222 , and the first support rod 2212 and the second support rod 2213 are parallel to each other.

[0037] In this embodiment, the first support rod 2212 and the second support rod 2213 cooperate to drive the slide 222 to move in parallel.

[0038] The working principle and usage process of the utility model are as follows: first, after the cable passes through the pulley mechanism 2, the internal threaded sleeve 229 is driven to rotate by rotating the hand wheel 2210, and at the same time, the internal threaded sleeve 229 drives the shaft sleeve 2211 to move. When the shaft sleeve 2211 moves, the first support rod 2212 and the second support rod 2213 drive the slide 222 to move. The slide 222 drives the mounting head 225 to move through the mounting block 223, so that the mounting heads 225 in four directions respectively perform self-centering positioning on the cables passing through them through the corresponding balls 226;

[0039] Then, the guide frame 217 is driven to move by rotating the knob bolt 216, and the guide frame 217 drives the upper and lower shaft frames 213 to rotate synchronously in opposite directions through the guide rods 218 on both sides. In addition, during the process of the guide frame 217 driving the shaft frame 213 to rotate through the guide rods 218, the guide rods 218 slide along the inside of the guide groove 215, and the cables between the shaft frames 213 on both sides are limited by the pulleys 214 to avoid shaking and displacement during the cable release process.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pulley mechanism for laying cables that saves manpower, comprising a mounting seat (1), characterized in that: The mounting seat (1) is provided with a pulley mechanism (2) for supporting and conducting the cable during laying. The pulley mechanism (2) comprises: The main body component (21) includes a base (211) fixed at both left and right ends of the top of the mounting seat (1), a stand (212) fixed at both upper ends of the base (211), an axis frame (213) pivotally connected to the upper and lower ends of the inner wall of the stand (212), a pulley (214) rotatably mounted between the ends of the left and right axis frames (213), a guide groove (215) provided inside one end of the axis frame (213) away from the pulley (214), a knob bolt (216) threadedly mounted on the stand (212), a guide frame (217) rotatably mounted at the end of the knob bolt (216), and a guide rod (218) mounted at both ends of the inner wall of the guide frame (217); The limiting component (22) is arranged on the main component (21) and is used for positioning the cable.

2. The pulley mechanism for laying cables with reduced labor according to claim 1, characterized in that: The guide rod (218) is rotatably mounted on the guide frame (217), and the guide rod (218) passes through and is located inside the guide groove (215).

3. The pulley mechanism for laying cables with reduced labor according to claim 1, characterized in that: The position limiting assembly (22) comprises a mounting plate (221) fixed between two side frames (212), four equally distributed slides (222) slidably mounted inside the mounting plate (221), a mounting block (223) fixed at the outer end of the slide (222), a mounting head (225) mounted at the upper end of the mounting block (223), a ball (226) mounted inside the mounting head (225), an externally threaded barrel (228) fixed at the center of the inner end of the mounting plate (221), an internally threaded sleeve (229) threadedly mounted on the externally threaded barrel (228), a shaft sleeve (2211) rotatably mounted on the internally threaded sleeve (229), and four equally distributed first support rods (2212) and four second support rods (2213) pivotally connected to the outer wall of the shaft sleeve (2211).

4. The pulley mechanism for laying cables with reduced labor according to claim 3, characterized in that: The limiting assembly (22) further includes a hand wheel (2210) fixed to the outer wall of the end of the internal threaded sleeve (229), and the external threaded cylinders (228) on the left and right sides are fixedly connected.

5. The pulley mechanism for laying cables with reduced labor according to claim 3, characterized in that: The position limiting assembly (22) further comprises a threaded hole (224) provided inside the upper end of the mounting block (223), and a threaded head (227) fixed at the lower end of the mounting head (225) and matched with the threaded hole (224).

6. The pulley mechanism for laying cables with reduced labor according to claim 3, characterized in that: One end of the first support rod (2212) and the second support rod (2213) away from the shaft sleeve (2211) are both pivotally connected to the corresponding slide (222), and the first support rod (2212) and the second support rod (2213) are parallel to each other.

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