Unpowered cableway ferry river-crossing steel cable pulley device

Abstract

The embodiment of the utility model provides an unpowered cableway ferry river-crossing steel cable pulley device. The unpowered cableway ferry river-crossing steel cable pulley device comprises a wheel disc and a pulley assembly. The number of the wheel discs is two, the two wheel discs are detachably and oppositely arranged, and a containing space is defined between the two wheel discs. The pulley assembly is detachably and rotationally arranged in the containing space, and a rotating shaft of the pulley assembly is perpendicular to the surface of the wheel disc. The pulley assembly comprises a first pulley block, a second pulley block and a third pulley block, and connecting lines of the center of the first pulley block, the center of the second pulley block and the center of the third pulley block form a triangle. The first pulley block is provided with a first annular groove, the second pulley block is provided with a second annular groove, the third pulley block is provided with a third annular groove, and the steel cable extends along a straight line and can be in sliding connection with the pulley assembly through the first annular groove, the second annular groove and the third annular groove in sequence. And the steel cable is tangent to the first annular groove, the second annular groove and the third annular groove.

Description

Technical Field

[0001] The present application relates to the technical field of cableway transportation, and particularly relates to a cable pulley device for a non-powered cable ferry to cross a river. Background Art

[0002] With the continuous increase in traffic demand, especially in areas where frequent passage is required across rivers, lakes and other water areas, ferries have become an important means of daily travel for people. Traditional ferries mostly rely on human power, wind power or mechanical power, with complex operations, high maintenance costs, and certain impacts on the environment. A non-powered cable ferry is a type of ferry that operates by utilizing natural water flow or gravity. Since non-powered cable ferries not only save energy but also greatly simplify the operation process, they have been gradually popularized and applied.

[0003] In related technologies, during the operation of a non-powered cable ferry, a cableway across the river is usually used to tow the ferry on the water surface through a pulley block. The pulley block consists of multiple complex components, such as a multi-wheel pulley system, a complex tensioning device, etc.

[0004] However, the existing pulley block has a complex structure, great maintenance difficulty, and high maintenance costs. Summary of the Utility Model

[0005] The embodiments of the present application provide a cable pulley device for a non-powered cable ferry to cross a river, so as to solve the technical problems in related technologies that the pulley block has a complex structure, great maintenance difficulty, and high maintenance costs.

[0006] The embodiments of the present application provide a cable pulley device for a non-powered cable ferry to cross a river, including: a wheel disc and a pulley assembly;

[0007] There are two wheel discs, which are relatively arranged detachably, and a receiving space is defined between the two wheel discs;

[0008] The pulley assembly is rotatably arranged in the receiving space detachably, and the rotation axis of the pulley assembly is perpendicular to the surface of the wheel disc;

[0009] The pulley assembly includes a first pulley group, a second pulley group and a third pulley group. The connection lines of the centers of the first pulley group, the second pulley group and the third pulley group form a triangle; the first pulley group is provided with a first annular groove for winding a steel cable, the second pulley group is provided with a second annular groove for winding a steel cable, and the third pulley group is provided with a third annular groove for winding a steel cable. The steel cable extends in a straight line and can be slidably connected to the pulley assembly through the first annular groove, the second annular groove and the third annular groove in sequence, and the steel cable is tangent to the first annular groove, the second annular groove and the third annular groove.

[0010] In a feasible implementation, the line connecting the centers of the first pulley set, the second pulley set, and the third pulley set forms an isosceles triangle, where the center of the second pulley set is the apex angle of the isosceles triangle.

[0011] In a feasible implementation, the shape of the wheel disc is set as an equilateral triangle, and the included angles of the wheel disc are all set as arc-shaped included angles. The radii of the arc-shaped included angles, the first pulley set, the second pulley set, and the third pulley set are the same;

[0012] And the first pulley set and the second pulley set are coaxially arranged with two arc-shaped included angles of the wheel disc respectively.

[0013] In a feasible implementation, the cable pulley device further includes a pin shaft and a split pin;

[0014] One end of the pin shaft sequentially passes through one of the wheel discs, the shackle, and the other wheel disc to limit the shackle within the accommodation space. A pin hole is provided at one end of the pin shaft, and the split pin passes through the pin hole to fix the pin shaft. The other end of the pin shaft abuts against one of the wheel discs.

[0015] In a feasible implementation, the pulley assembly further includes a first bolt and a first nut;

[0016] The first pulley set includes a first pulley and a first bearing. The first pulley and the first bearing are coaxially and integrally arranged, and the first pulley is rotatably arranged outside the first bearing. The first bolt passes through the wheel disc and the center of the first bearing, and cooperates with the first nut to limit the first pulley set within the accommodation space;

[0017] The second pulley set includes a second pulley and a second bearing. The second pulley and the second bearing are coaxially and integrally arranged, and the second pulley is rotatably arranged outside the second bearing. The first bolt passes through the wheel disc and the center of the second bearing, and cooperates with the first nut to limit the second pulley set within the accommodation space;

[0018] The third pulley set includes a third pulley and a third bearing. The third pulley and the third bearing are coaxially and integrally arranged, and the third pulley is rotatably arranged outside the third bearing. The first bolt passes through the wheel disc and the center of the third bearing, and cooperates with the first nut to limit the third pulley set within the accommodation space.

[0019] In a feasible implementation, the first bolt sequentially includes a first threaded portion, a first avoidance portion, a fixing portion, a second avoidance portion, and a second threaded portion from the head to the tail;

[0020] Wherein, the first threaded portion is provided with a first thread that is mutually adapted to the through hole on the wheel disc, the second threaded portion is provided with a second thread that is mutually adapted to the first nut, and the outer diameters of the first threaded portion, the second threaded portion, the first avoidance portion, and the second avoidance portion are all smaller than the outer diameter of the fixing portion.

[0021] In a feasible implementation, the wire rope pulley device further includes a connecting component, and the connecting component includes a second bolt and a second nut. The second bolt sequentially passes through one of the discs and the other disc, and the two discs are detachably connected by the second nut;

[0022] There are multiple connecting components, and the multiple connecting components are evenly arranged.

[0023] The embodiment of the present application provides a non-powered cable ferry cross-river wire rope pulley device. In the embodiment of the present application, by relatively arranging two discs detachably and rotatably arranging the pulley assembly detachably in the accommodation space, the installation of the wire rope pulley device is facilitated, and when maintenance of the wire rope pulley device is required, the discs and the pulley assembly can be directly removed, which facilitates the maintenance of the wire rope pulley device. Further, in the embodiment of the present application, by connecting the centers of the first pulley group, the second pulley group, and the third pulley group to form a triangle, the structural stability is improved; further, the wire rope extending along a straight line is tangent to the first annular groove, the second annular groove, and the third annular groove, so that the wire rope can be limited by the first annular groove, the second annular groove, and the third annular groove, avoiding the left and right shaking of the wire rope, thereby improving the stability of the ferry. Through the arrangement of the embodiment of the present application, a non-powered cable ferry cross-river wire rope pulley device with a simple structure, easy to maintain, low maintenance cost, stable structure, and capable of improving the stability of the ferry is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0025] Figure 1 is a partial structural schematic diagram of a non-powered cable ferry cross-river wire rope pulley device provided by an embodiment of the present application Figure 1 ;

[0026] Figure 2 is a partial structural schematic diagram of a non-powered cable ferry cross-river wire rope pulley device provided by an embodiment of the present application Figure 2 ;

[0027] Figure 3 is a structural schematic diagram of a non-powered cable ferry cross-river wire rope pulley device provided by an embodiment of the present application;

[0028] Figure 4 is Figure 3 a structural schematic diagram of the first pulley group in

[0029] Figure 5 is Figure 3 The structural schematic diagram of the first bolt and the first nut in

[0030] Explanation of the reference numerals in the drawings:

[0031] 100 - wheel disc; 200 - pulley assembly; 400 - shackle; 500 - connection assembly;

[0032] 110 - accommodation space;

[0033] 210 - first pulley set; 211 - first pulley; 212 - first bearing; 220 - second pulley set; 230 - third pulley set; 240 - first bolt; 241 - first threaded portion; 242 - first avoidance portion; 243 - fixing portion; 244 - second avoidance portion; 245 - second threaded portion; 250 - first nut;

[0034] 310 - pin shaft; 320 - split pin;

[0035] 510 - second bolt; 520 - second nut. Detailed implementation manners

[0036] In order to enable those skilled in the art of the present technology to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0037] It should be noted that many specific details are set forth in the following description to facilitate a thorough understanding of the present application. However, the present application may be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific implementation manners disclosed below.

[0038] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application 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 therefore should not be construed as a limitation of the present application. In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium.

[0039] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected entities are not connected through an intermediate structure, but are only connected to form a whole through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0040] In this application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0041] With the continuous increase in transportation demand, especially in areas with frequent waters such as rivers and lakes, ferries have become an important means of daily travel for people. Traditional ferries mostly rely on human, wind or mechanical power, which are complicated to operate, have high maintenance costs, and have a certain impact on the environment. Unpowered cableway ferries are a type of ferry that operates by utilizing natural water flow or gravity. Since unpowered cableway ferries not only save energy, but also greatly simplify the operation process, unpowered cableway ferries are gradually being promoted and applied.

[0042] In the related art, during the operation of the non-powered cableway ferry, the ferry is usually pulled on the water surface by a cross-river cableway through a pulley block. In specific implementation, the cross-river cableway is usually passed through a pulley block so that the pulley block can slide along the cross-river cableway. The pulley block is also connected to a shackle, which is connected to the ferry through a steel wire. Under the traction of the pulley block, the ferry runs along the extension direction of the cableway. The existing pulley block is composed of multiple complex components, such as a multi-wheel pulley system, a complex tensioning device, etc.

[0043] However, the existing pulley blocks have complex structures and usually cannot be removed from the cross-river cableway, making maintenance difficult and costly.

[0044] Therefore, an embodiment of the present application provides a non-powered cableway ferry crossing river cable pulley device to solve the technical problems in the related art that the pulley group has a complex structure, is difficult to maintain, and has a high maintenance cost.

[0045] Figure 1 This is a partial structural diagram of a non-powered cableway ferry crossing river cable pulley device provided in one embodiment of the present application. Figure 1 ; Figure 2It is a partial structural schematic diagram of a cable pulley device for a non-powered cable ferry to cross a river provided by an embodiment of the present application Figure 2 ; Figure 3 It is a structural schematic diagram of a cable pulley device for a non-powered cable ferry to cross a river provided by an embodiment of the present application.

[0046] An embodiment of the present application provides a cable pulley device for a non-powered cable ferry to cross a river. Referring to Figures 1 to 3 , it includes: a wheel disc 100 and a pulley assembly 200;

[0047] There are two wheel discs 100, which are detachably arranged opposite to each other, and a receiving space 110 is defined between the two wheel discs 100;

[0048] The pulley assembly 200 is detachably rotatably arranged in the receiving space 110, and the rotation axis of the pulley assembly 200 is perpendicular to the surface of the wheel disc 100;

[0049] The pulley assembly 200 includes a first pulley group 210, a second pulley group 220 and a third pulley group 230. The centers of the first pulley group 210, the second pulley group 220 and the third pulley group 230 are connected to form a triangle. The first pulley group 210 is provided with a first annular groove for winding a steel cable, the second pulley group 220 is provided with a second annular groove for winding a steel cable, and the third pulley group 230 is provided with a third annular groove for winding a steel cable. The steel cable extends in a straight line and can be slidably connected to the pulley assembly 200 through the first annular groove, the second annular groove and the third annular groove in sequence, and the steel cable is tangent to the first annular groove, the second annular groove and the third annular groove.

[0050] Exemplarily, the two wheel discs 100 can adopt buckles to achieve detachable connection.

[0051] It should be noted that the rotation axis includes a first rotation axis, a second rotation axis and a third rotation axis. The first pulley group 210 rotates around the first rotation axis, the second pulley group 220 rotates around the second rotation axis, and the third pulley group 230 rotates around the third rotation axis.

[0052] Furthermore, the centers of the first pulley group 210 and the third pulley group 230 are arranged on the same straight line, and the center of the second pulley group 220 has a certain distance from the centers of the first pulley group 210 and the second pulley group 220.

[0053] From the above description, it can be seen that the following technical effects are achieved by this solution:

[0054] The embodiment of the present application provides a cable ferry cross-river steel cable pulley device without power. In the embodiment of the present application, by relatively arranging two discs 100 detachably and rotatably arranging the pulley assembly 200 detachably in the accommodation space 110, the installation of the steel cable pulley device is facilitated, and when the steel cable pulley device needs to be repaired and maintained, the disc 100 and the pulley assembly 200 can be directly removed, which facilitates the maintenance of the steel cable pulley device. Further, in the embodiment of the present application, by connecting the centers of the first pulley group 210, the second pulley group 220, and the third pulley group 230 to form a triangle, the structural stability is improved; further, the steel cable extending along a straight line is tangent to the first annular groove, the second annular groove, and the third annular groove, so that the steel cable can be limited by the first annular groove, the second annular groove, and the third annular groove, avoiding the left and right shaking of the steel cable, thereby improving the stability of the ferry. Through the setting of the embodiment of the present application, a cable ferry cross-river steel cable pulley device without power is provided, which has a simple structure, is easy to maintain, has a low maintenance cost, is structurally stable, and can improve the stability of the ferry.

[0055] In some examples, the connection line between the center of the first pulley group 210, the center of the second pulley group 220, and the center of the third pulley group 230 forms an isosceles triangle, wherein the center of the second pulley group 220 is the apex angle of the isosceles triangle.

[0056] Of course, the connection line between the center of the first pulley group 210, the center of the second pulley group 220, and the center of the third pulley group 230 can also form an equilateral triangle.

[0057] In the embodiment of the present application, by connecting the center of the first pulley group 210, the center of the second pulley group 220, and the center of the third pulley group 230 to form an isosceles triangle, and the center of the second pulley group 220 is the apex angle of the isosceles triangle, when the steel cable extending along a straight line passes through the first annular groove, the second annular groove, and the third annular groove in sequence, the force on the steel cable can be ensured to be uniform, so as to limit the position of the steel cable and ensure the stability of the ferry.

[0058] In some examples, the shape of the disc 100 is set as an equilateral triangle, and the included angles of the disc 100 are all set as arc-shaped included angles, and the radii of the arc-shaped included angles, the radius of the first pulley group 210, the radius of the second pulley group 220, and the radius of the third pulley group 230 are the same;

[0059] And the first pulley group 210 and the second pulley group 220 are coaxially arranged with two arc-shaped included angles of the disc 100 respectively.

[0060] In the embodiment of the present application, the shape of the roulette 100 is set to a triangle, and the triangle has strong stability, thereby improving the structural stability of the cable pulley device. Further, in the embodiment of the present application, the sizes of the arc angles, the radius of the first pulley group 210, the radius of the second pulley group 220, and the radius of the third pulley group 230 are the same, and the first pulley group 210, the second pulley group 220, and the two arc angles of the roulette 100 are coaxially arranged. When the cable pulley device is slidably installed on the cable, the roulette 100 can be evenly stressed, improving the structural strength of the cable pulley device.

[0061] In some other examples, the cable pulley device further includes a pin shaft 310 and a split pin 320;

[0062] One end of the pin shaft 310 sequentially passes through one of the roulettes 100, the shackle 400, and the other roulette 100 to limit the shackle 400 within the accommodation space 110. A pin hole is provided at one end of the pin shaft 310, and the split pin 320 passes through the pin hole to fix the pin shaft 310, and the other end of the pin shaft 310 abuts against one of the roulettes 100.

[0063] In specific implementation, a steel wire rope is provided on the ferry, and the steel wire rope is connected to the cable pulley device through the shackle 400 to realize the traction of the ferry through the cable pulley device.

[0064] In the embodiment of the present application, through the arrangement of the pin shaft 310 and the split pin 320, the connection and disassembly of the shackle 400 are facilitated, that is, the connection and disassembly of the ferry and the cable pulley device are facilitated.

[0065] Figure 4 Yes Figure 3 It is a schematic structural diagram of the first pulley group.

[0066] In some examples, referring to Figures 1 to 4 , the pulley assembly 200 further includes a first bolt 240 and a first nut 250;

[0067] The first pulley group 210 includes a first pulley 211 and a first bearing 212. The first pulley 211 and the first bearing 212 are coaxially and integrally arranged, and the first pulley 211 is rotatably arranged outside the first bearing 212. The first bolt 240 passes through the roulette 100 and the center of the first bearing 212, and the first pulley group 210 is limited within the accommodation space 110 by cooperating with the first nut 250;

[0068] The second pulley group 220 includes a second pulley and a second bearing. The second pulley and the second bearing are coaxially and integrally arranged, and the second pulley is rotatably arranged outside the second bearing. The first bolt 240 passes through the roulette 100 and the center of the second bearing, and the second pulley group 220 is limited within the accommodation space 110 by cooperating with the first nut 250;

[0069] The third pulley set 230 includes a third pulley and a third bearing. The third pulley and the third bearing are coaxially and integrally arranged, and the third pulley is rotatably arranged outside the third bearing. The first bolt 240 passes through the centers of the wheel disc 100 and the third bearing, and cooperates with the first nut 250 to limit the third pulley set 230 within the accommodation space 110.

[0070] Exemplarily, the first pulley set 210 may include a first pulley 211 and two fourth bearings. The two fourth bearings are coaxially arranged at both ends of the first pulley 211 respectively. The first bolt 240 and the first nut 250 cooperate to limit the two fourth bearings and the first pulley 211 within the accommodation space 110. The second pulley set 220 may include a second pulley and two fifth bearings. The two fifth bearings are coaxially arranged at both ends of the second pulley respectively. The first bolt 240 and the first nut 250 cooperate to limit the two fifth bearings and the second pulley within the accommodation space 110. The third pulley set 230 may include a third pulley and two sixth bearings. The two sixth bearings are coaxially arranged at both ends of the third pulley respectively. The first bolt 240 and the first nut 250 cooperate to limit the two fifth bearings and the third pulley within the accommodation space 110.

[0071] For example, the first bearing 212, the second bearing and the third bearing may be arranged as rolling bearings.

[0072] Again for example, the fourth bearing, the fifth bearing and the sixth bearing may also be arranged as rolling bearings.

[0073] In the embodiment of the present application, through the arrangement of the first bearing 212, the second bearing and the third bearing, not only can the positions of the first pulley 211, the second pulley and the third pulley be restricted, but also the frictional force when the first pulley 211, the second pulley and the third pulley rotate can be reduced.

[0074] Figure 5 Yes Figure 3 It is a schematic structural view of the first bolt and the first nut.

[0075] Exemplarily, referring to Figure 5 , the first bolt 240 sequentially includes a first threaded portion 241, a first avoidance portion 242, a fixing portion 243, a second avoidance portion 244 and a second threaded portion 245 from the head to the tail;

[0076] Wherein, the first threaded portion 241 is provided with a first thread adapted to the through hole on the wheel disc 100, the second threaded portion 245 is provided with a second thread adapted to the first nut 250, and the outer diameters of the first threaded portion 241, the second threaded portion 245, the first avoidance portion 242 and the second avoidance portion 244 are all smaller than the outer diameter of the fixing portion 243.

[0077] In the embodiment of the present application, through the settings of the first avoidance portion 242 and the second avoidance portion 244, a reserved avoidance space can be provided for the rotation of the pulley assembly 200, avoiding the obstruction of the rotation of the pulley assembly 200 by the wheel disc 100 or the nut, and improving the smoothness of the ferry traction.

[0078] In some other examples, the cable pulley device further includes a connection assembly 500. The connection assembly 500 includes a second bolt 510 and a second nut 520. The second bolt 510 sequentially passes through one of the wheel discs 100 and the other wheel disc 100, and the two wheel discs 100 are detachably connected by the second nut 520;

[0079] A plurality of connection assemblies 500 are provided, and the plurality of connection assemblies 500 are evenly arranged.

[0080] Exemplarily, a plurality of connection assemblies 500 can be evenly arranged along the edge of the wheel disc 100.

[0081] In the embodiment of the present application, through the cooperative setting of the second bolt 510 and the second nut 520, the detachable connection of the wheel disc 100 is realized, the operation is simple, and the structural strength of the wheel disc 100 can also be improved, thereby further improving the structural strength of the cable pulley device.

[0082] It is easy to understand that those skilled in the art can combine, split, recombine, etc. the embodiments of the present application based on several embodiments provided by the present application to obtain other embodiments, and none of these embodiments exceed the protection scope of the present application.

[0083] The above specific embodiments further elaborate the purpose, technical solution and beneficial effects of the embodiments of the present application. It should be understood that the above are only the specific embodiments of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. A cable pulley device for a non-powered cable ferry to cross a river, characterized in that, Comprising: A roulette wheel and a pulley assembly; There are two roulette wheels, the two roulette wheels are detachably arranged opposite to each other, and a receiving space is defined between the two roulette wheels; The pulley assembly is detachably rotatably arranged in the receiving space, and the rotation axis of the pulley assembly is perpendicular to the surface of the roulette wheel; The pulley assembly includes a first pulley group, a second pulley group and a third pulley group. The connection lines of the centers of the first pulley group, the second pulley group and the third pulley group form a triangle. The first pulley group is provided with a first annular groove for winding a steel cable, the second pulley group is provided with a second annular groove for winding a steel cable, and the third pulley group is provided with a third annular groove for winding a steel cable. The steel cable extends in a straight line and can be slidably connected to the pulley assembly through the first annular groove, the second annular groove and the third annular groove in sequence, and the steel cable is tangent to the first annular groove, the second annular groove and the third annular groove.

2. The steel cable pulley device for a non-powered cable ferry crossing a river according to claim 1, characterized in that, The connection line between the center of the first pulley group and the centers of the second pulley group and the third pulley group forms an isosceles triangle, wherein the center of the second pulley group is the apex angle of the isosceles triangle.

3. The steel cable pulley device for a non-powered cable ferry to cross a river according to claim 2, characterized in that, The shape of the roulette wheel is an equilateral triangle, and the included angles of the roulette wheel are all arc-shaped included angles. The radius of the arc-shaped included angle, the radius of the first pulley group, the radius of the second pulley group and the radius of the third pulley group are the same; And the first pulley group and the second pulley group are coaxially arranged with two arc-shaped included angles of the roulette wheel respectively.

4. A cable pulley device for a non-powered cable ferry crossing a river according to claim 1, characterized in that, The steel cable pulley device further includes a pin shaft and a split pin; One end of the pin shaft sequentially passes through one of the roulette wheels, a shackle and the other roulette wheel to limit the shackle in the receiving space. A pin hole is provided at one end of the pin shaft, and the split pin passes through the pin hole to fix the pin shaft. The other end of the pin shaft abuts against one of the roulette wheels.

5. A cable pulley device for a non-powered cable ferry to cross a river according to any one of claims 1-4, characterized in that, The pulley assembly further includes a first bolt and a first nut; The first pulley group includes a first pulley and a first bearing. The first pulley and the first bearing are coaxially and integrally arranged, and the first pulley is rotatably arranged outside the first bearing. The first bolt passes through the roulette wheel and the center of the first bearing, and the first pulley group is limited in the receiving space by cooperating with the first nut; The second pulley group includes a second pulley and a second bearing. The second pulley and the second bearing are coaxially and integrally arranged, and the second pulley is rotatably arranged outside the second bearing. The first bolt passes through the roulette wheel and the center of the second bearing, and the second pulley group is limited in the receiving space by cooperating with the first nut; The third pulley group includes a third pulley and a third bearing. The third pulley and the third bearing are coaxially and integrally arranged, and the third pulley is rotatably arranged outside the third bearing. The first bolt passes through the roulette wheel and the center of the third bearing, and the third pulley group is limited in the receiving space by cooperating with the first nut.

6. The cable pulley device for a non-powered cable ferry crossing a river according to claim 5, characterized in that, The first bolt sequentially includes a first threaded portion, a first avoidance portion, a fixing portion, a second avoidance portion, and a second threaded portion from the head to the tail; Wherein, the first threaded portion is provided with a first thread adapted to the through hole on the wheel disc, the second threaded portion is provided with a second thread adapted to the first nut, and the outer diameters of the first threaded portion, the second threaded portion, the first avoidance portion, and the second avoidance portion are all smaller than the outer diameter of the fixing portion.

7. A cable pulley device for a non-powered cable ferry to cross a river according to any one of claims 1-4, characterized in that, The cable pulley device further includes a connection assembly, the connection assembly includes a second bolt and a second nut, and the second bolt sequentially passes through one of the wheel discs and the other wheel disc, and the two wheel discs are detachably connected by the second nut; A plurality of the connection assemblies are provided, and the plurality of connection assemblies are evenly arranged.

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