A combined friction drum

Abstract

The application discloses a combined friction drum, which comprises a support body, a friction wedge wheel assembly, a power input shaft, a power device, a guide pulley assembly and a rope.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering equipment, in particular to a combined friction drum. BACKGROUND

[0002] In the field of power construction and communication line laying, efficient and safe and reliable rope traction and control equipment is essential. With the continuous development of the industry, the construction scale is expanding, and the working environment is becoming more complex. The traditional rope operation equipment gradually shows many deficiencies in meeting the construction needs.

[0003] The traditional rope winding device usually adopts a winch to pull, lift or drag heavy objects, and tighten the rope. The drum is one of the core components of the winch, which is used to wind the rope. In the related art, the winch generally adopts a simple smooth drum or an ordinary friction wheel structure. The smooth drum mainly relies on the small friction between the rope and the surface of the drum when winding the rope. When hoisting heavy objects or in a complex working environment (such as a certain inclination angle, vibration, etc.), the rope is prone to slipping, which causes the hoisting process to be unstable, and in severe cases, it may cause safety accidents and threaten the safety of construction personnel and the progress of the project. Although the ordinary friction wheel utilizes friction to some extent, the structure design does not fully consider the dynamic characteristics and stress changes of the rope, and the adaptability of the rope groove and the rope is poor. In the long-term use process, the rope is severely worn, and frequent replacement of the rope not only increases the construction cost, but also reduces the construction efficiency due to the replacement. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a combined friction drum to improve the stability of the rope when pulling heavy objects.

[0005] To achieve the above purpose, the technical solution adopted by the present application is to provide a combined friction drum, comprising: a support body; a friction wedge wheel assembly, the friction wedge wheel assembly is connected with the support body through a power input shaft, the power input shaft is circumscribed by a power device, and the power device drives the power input shaft to make the friction wedge wheel assembly generate friction with the rope to realize the traction and winding of the rope; a guide pulley assembly, the guide pulley assembly is connected with the support body, and the guide pulley assembly is used to guide the direction of the rope between the friction wedge wheel assemblies.

[0006] As a preferred, the friction wedge assembly comprises a plurality of friction wedges arranged axially along the power input shaft; the guide pulley assembly comprises a plurality of guide pulleys independently mounted with the support body, the number of the guide pulleys corresponding to the number of the friction wedges, and the guide pulleys being arranged obliquely across the friction wedges, the entry side and the exit side of the guide pulleys corresponding to two adjacent friction wedges respectively, so that the rope can be guided out of one friction wedge and introduced into the next adjacent friction wedge.

[0007] As another preferred, the combined friction drum further comprises an entry rope guide and an exit rope guide, the exit rope guide and the entry rope guide being connected with the support body, and the entry rope guide being used to ensure the smooth entry of the rope into the friction wedge assembly, and the exit rope guide being used to ensure the smooth exit of the rope from the rope groove of the guide pulley assembly.

[0008] Further preferably, the combined friction drum further comprises a back tension rope press, which is connected with the support body and used to provide back tension to prevent the rope from sliding, and the back tension rope press presses the rope in the rope groove of the friction wedge assembly.

[0009] Preferably, the back tension rope press comprises a rope pressing wheel, a balance bridge and a tension bolt, the rope pressing wheel being connected with the balance bridge, one end of the tension bolt being connected with the balance bridge and the other end being connected with the support body, the rope pressing wheel being used to press the rope in the rope groove of the friction wedge assembly, the tension bolt being used to generate tension against the support body, and the balance bridge being used to ensure the stable pressing of the rope pressing wheel and the uniform pressure.

[0010] Preferably, the balance bridge adopts a symmetrical structure, and the balance bridge is provided with two corresponding rope pressing wheels at its two symmetrical ends, so that the pressure of the two rope pressing wheels is accurately the same and remains stable during the operation.

[0011] Preferably, the surface of the rope pressing wheel of the back tension rope press is provided with anti-skid lines.

[0012] Preferably, any two adjacent friction wedges are separated by a certain distance by an isolation sleeve.

[0013] Further preferably, one end of the power input shaft is rigidly connected with the hard support of the support body, and the other end is connected with the soft support of the support body through a bolt, and the rope is wound into the friction wedge assembly and the guide pulley assembly through one side of the soft support.

[0014] Further preferably, the rope groove depth of the friction wedge roller assembly is a certain multiple of the rope diameter, the rope groove bottom diameter is equal to the rope diameter, and the two side surfaces of the rope groove are in an "eight" shape structure to increase the attachment area and force of the rope and the rope groove.

[0015] Compared with the prior art, the application has the beneficial effects that:

[0016] The weight of the double-drum winch is lighter than that of the existing double-drum winch, and there is no impact caused by the slippage of the rope in the drum of the traditional single-drum winch. The performance in the field of rope traction and control is excellent, and it can meet the high requirements of heavy lifting and rope operation in different industrial fields, and has a broad application prospect and market value.

[0017] During the continuous operation of the combined friction drum, the guide pulley assembly maintains stable guiding of the rope, ensuring that the rope passes between the friction wedge rollers in an orderly manner according to the predetermined trajectory. Whether in low-speed traction or high-speed winding working conditions, this stable cooperation can maintain the stable operation of the system. For example, when lifting heavy objects such as steel beams at construction sites, even in complex environmental conditions, such as the presence of certain wind interference or slight vibration of the construction site, the close cooperation between the guide pulley assembly and the friction wedge roller assembly can still ensure the stable operation of the rope, effectively reducing the number of interruptions in lifting operations caused by unstable ropes, greatly improving construction efficiency and safety, and significantly improving the stability of the entire combined friction drum.

[0018] Further, the guide pulley assembly is composed of multiple guide pulleys independently supported and arranged in cross with multiple friction wedge rollers, and the installation direction is accurately calculated and adjusted. In actual work, the rope can be accurately guided out of one friction wedge roller and introduced into the next one, effectively avoiding rope deviation and winding. For example, in complex environments at construction sites, compared with traditional devices, the number of interruptions caused by rope problems can be greatly reduced, ensuring continuous and stable lifting operations and maintaining the stability of system operation.

[0019] The spline shaft support mode combining soft support and hard support facilitates the winding of the rope and the maintenance of the equipment, shortens the maintenance time and workload, and improves the utilization rate of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the combined friction drum;

[0021] Figure 2 is a schematic view of the corresponding relationship between the friction wedge roller assembly and the guide pulley assembly in the combined friction drum;

[0022] Figure 3 is a structural schematic view of the combined friction drum from a bottom perspective;

[0023] Figure 4 Structure diagram of one side of the hard support in the combined friction drum;

[0024] Figure 5 Structure diagram of one side of the soft support in the combined friction drum;

[0025] Figure 6 Structure diagram of the back tension rope pressing device;

[0026] Figure 7 Structure diagram of the rope entry guide and the rope exit guide.

[0027] In the figure: 1, combined friction drum; 10, support body; 20, friction wedge assembly; 21, first friction wedge; 22, second friction wedge; 23, third friction wedge; 24, fourth friction wedge; 30, guide pulley assembly; 31, first guide pulley; 32, second guide pulley; 33, third guide pulley; 34, fourth guide pulley; 40, power input shaft; 41, support frame; 50, rope entry guide; 60, rope exit guide; 70, back tension rope pressing device; 71, rope pressing wheel; 72, balance bridge; 73, tension bolt; 80, hard support; 90, soft support; a, offset angle. DETAILED DESCRIPTION

[0028] Hereinafter, the present application will be further described in conjunction with specific embodiments, and it should be noted that the following described embodiments or technical features can be combined with each other to form new embodiments without conflict.

[0029] In the description of the present application, it should be noted that for orientation words, such as terms “center”, “transverse”, “longitudinal”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0030] It should be noted that the terms “first”, “second” and the like in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0031] The terms "comprise" and "comprising", and any variations thereof, as used in the specification and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of steps or elements does not necessarily comprise only those steps or elements, but can include additional steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

[0032] In a preferred embodiment, referring to Figures 1 to 7 The present application provides a combined friction drum 1, comprising: a support body 10; a friction wedge assembly 20 connected with the support body 10 through a power input shaft 40, the power input shaft 40 is connected with a power device, the power input shaft 40 is a spline shaft, the power device drives the power input shaft 40 to make the friction wedge assembly 20 generate friction force with the rope to realize the traction and winding of the rope; a guide pulley assembly 30 connected with the support body 10, the guide pulley assembly 30 is used to guide the rope to pass between the friction wedge assemblies 20.

[0033] As a preferred, the friction wedge assembly 20 comprises a plurality of friction wedges arranged along the axial direction of the power input shaft 40; the guide pulley assembly 30 comprises a plurality of guide pulleys independently installed with the support body 10, the number of the guide pulleys corresponds to the number of the friction wedges, and the guide pulleys are arranged in an inclined and crossed manner with respect to the friction wedges, the entry side and the exit side of the guide pulley correspond to two adjacent friction wedges respectively, so that the rope can be guided out of one friction wedge and introduced into the next adjacent friction wedge.

[0034] In the present application, the combined friction drum 1 is used with internal combustion engine power, electric power drive and reduction mechanism. Specifically, the friction wedges arranged in the friction wedge assembly 20 are preferably four, which are distributed along the axial direction of the power input shaft 40 as the first friction wedge 21, the second friction wedge 22, the third friction wedge 23 and the fourth friction wedge 24. Similarly, four guide pulleys are provided corresponding to the four friction wedges, which are the first guide pulley 31, the second guide pulley 32, the third guide pulley 33 and the fourth guide pulley 34.

[0035] The structure of the guide pulley is a pulley groove type, and the four guide pulleys are independently supported and installed. The installation direction is arranged in a crossed manner with the friction wedges, and the crossing angle is just enough to ensure that the guide pulley can guide the rope out of one friction wedge and introduce it into the next friction wedge.

[0036] As another preferred, the combined friction drum 1 further comprises: an entry rope guide 50 and an exit rope guide 60, the exit rope guide 60 and the entry rope guide 50 are connected with the bracket body 10, and the entry rope guide 50 is used to ensure the smooth entry of the rope into the friction wedge assembly 20, and the exit rope guide 60 is used to ensure the smooth exit of the rope from the rope groove of the guide pulley assembly 30.

[0037] Further preferably, the combined friction drum 1 further comprises: a back tension rope press 70, the back tension rope press 70 is connected with the bracket body 10, and is used to provide a back tension force to prevent the rope from sliding, and the back tension rope press 70 presses the rope in the rope groove of the friction wedge assembly 20.

[0038] Preferably, the back tension rope press 70 comprises: a rope pressing wheel 71, a balance bridge 72 and a tension bolt 73, the rope pressing wheel 71 is connected with the balance bridge 72, one end of the tension bolt 73 is connected with the balance bridge 72, and the other end is connected with the bracket body 10, the rope pressing wheel 71 is used to press the rope in the rope groove of the friction wedge assembly 20, the tension bolt 73 generates tension by pressing the bracket body 10, and the balance bridge 72 ensures that the rope pressing wheel 71 stably presses and the pressure is uniform.

[0039] Preferably, the balance bridge 72 adopts a symmetrical structure device, and the balance bridge 72 is provided with two corresponding rope pressing wheels 71 at the two symmetrical ends, and the balance bridge 72 is symmetrically arranged to make the pressure of the two rope pressing wheels 71 accurate and stable during work.

[0040] Therefore, when the combined friction drum 1 in the present application works, the rope on the traction side is introduced by the entry rope guide 50 to the lower side of the first friction wedge 21 for winding, introduced from the upper side of the first friction wedge 21 to the first guide pulley 31, then introduced by the first guide pulley 31 to the lower side of the second friction wedge 22 for winding, and then introduced from the upper side of the second friction wedge 22 to the second guide pulley 32, and the same is true for winding into the third and fourth friction wedges 24, and the rope is introduced by the fourth guide pulley 34 to the external automatic rope winder. Specifically, the back tension rope press 70 is installed at the exit position of the fourth friction wedge 24, which tightly presses the rope and the fourth friction wedge 24 together to form a back tension force, thereby preventing the rope from freely sliding in the friction wedge assembly 20 and the guide pulley assembly 30.

[0041] Preferably, the surface of the rope pressing wheel 71 of the back tension rope press 70 is provided with anti-skid lines or a rubber layer or other structure to increase friction, so as to further enhance the pressing effect on the rope.

[0042] Preferably, any two adjacent friction wedges are separated by a spacer sleeve at a certain distance, and correspondingly, the adjacent guide pulleys are also independently arranged at a certain distance, so as to ensure stable operation and no interference when coaxially installed on the spline shaft.

[0043] Further preferably, the hard support 80 is rigidly connected between one end of the power input shaft 40 and the support body 10, and the soft support 90 is connected to the support body 10 through bolt connection at the other end, and the rope is wound into the friction wedge wheel assembly 20 and the guide pulley assembly 30 through one side of the soft support 90. The spline shaft is the power input shaft 40, which is connected to the external power device through the shaft coupling. Both ends of the spline shaft are supported by bearings, specifically, one end of the support frame 41 supporting the spline shaft is rigidly connected to the support body 10 to form a hard support 80, and the other end of the support frame 41 supporting the spline shaft is hinged and bolted to the support body 10 to form a soft support 90. Therefore, only by opening the connecting bolt of the soft support 90 and lifting the support frame 41, the rope can be wound into the friction wedge wheel and the guide pulley. After completing the winding of the rope, the soft support 90 is buckled and the bolt is tightened, and the combined friction drum 1 can start working. The connection between the support frame 41 at the end of the soft support 90 and the spline shaft is a semi-open connection, which can only constrain the movement of the traction force direction of the spline shaft.

[0044] Further preferably, the rope groove depth of the friction wedge wheel assembly 20 is a certain multiple of the diameter of the rope, and the diameter of the bottom of the rope groove is equal to the diameter of the rope, and the two sides of the rope groove are in an "eight" shape structure to increase the adhesion area and adhesion force of the rope and the rope groove.

[0045] In the preferred embodiment of the present application, the rope groove depth of a single friction wedge wheel in the friction wedge wheel assembly 20 is twice the diameter of the rope, which can effectively prevent the rope from slipping. The diameter of the bottom of the rope groove is the same as the diameter of the rope, and when the rope is deformed under stress, its two sides form a wedge-shaped contact with the side wall of the rope groove, effectively increasing the adhesion area and adhesion force, and effectively preventing the rope from slipping in the groove. The two sides of the rope groove are in an "eight" shape structure, which facilitates the wedge of the rope into the rope groove. All friction wedge wheels are coaxially installed on the same spline shaft, and the installation method is spline connection, and the intermediate isolation sleeve is separated by a certain distance. The rope is preferably a steel wire rope.

[0046] Furthermore, the combined friction wedge wheel in this application is described with specific usage examples. The friction wedge wheel assembly 20 includes four friction wedge wheels, made of high-strength alloy steel and precision-machined. Its groove depth is precisely designed to be twice the rope diameter; for example, when using a 10mm diameter rope, the groove depth is 20mm. The bottom diameter of the groove is the same as the rope diameter, 10mm, and the two sides of the groove have a standard V-shaped structure with an angle of 30 degrees. This design allows the rope to form a wedge-shaped contact with the groove sidewalls when under force. When the rope deforms under tension, the contact area between its two sides and the groove sidewalls increases significantly, improving adhesion by approximately 50% compared to ordinary groove structures. In actual testing, when a 5kN tension is applied to the rope, the rope using this friction wedge wheel design shows almost no slippage within the groove, while the traditional flat-groove friction wheel exhibits significant slippage under the same tension, effectively demonstrating its superior performance in preventing rope slippage and jumping.

[0047] In terms of installation, all friction wedges are connected to the same splined shaft via high-precision splines. The splines are involute splines with a module of 2 and 20 teeth. This spline connection method ensures efficient and stable power transmission between the friction wedges and the splined shaft, with a transmission efficiency of over 95%. Adjacent friction wedges are separated by 10mm thick nylon insulating sleeves. Nylon has good wear resistance and self-lubricating properties, effectively isolating the friction wedges and reducing friction loss and noise generation during operation.

[0048] See details Figure 2 The guide pulley assembly 30 consists of four independently supported guide pulleys made of high-quality aluminum alloy with a hard anodized surface, improving wear and corrosion resistance. The pulley grooves are U-shaped, with a radius 2mm larger than the rope radius, ensuring smooth rope sliding within the grooves. The guide pulley support frame 41 is made of stainless steel and bolted to the frame. Each guide pulley is installed in a crisscross pattern with the friction wedges, the crisscross angle precisely calculated and adjusted, with the guide pulley offset angle α relative to the friction wedges being 45 degrees. In actual operation, when the rope is drawn from one friction wedge, it is precisely guided by the guide pulley to the next, effectively avoiding rope offset and tangling, and ensuring the continuity and stability of the rope traction operation.

[0049] The entry and exit rope guides 50 and 60 are structurally identical and are made of high-strength engineering plastic by injection molding. The main body is in the shape of a trumpet mouth, the large end of which is 3 times the diameter of the rope, and the small end is adapted to the diameter of the rope. Inside, there is a spiral guide groove with a depth of 3 mm and a width of 5 mm. When the rope approaches the guide, the trumpet mouth structure can easily guide the rope into the guide groove, and the spiral guide groove further ensures that the rope accurately enters the rope groove of the friction wedge or guide pulley. In multiple experiments, the combined friction drum 1 using this guide has a high success rate in the process of entering and exiting the rope. Compared with devices that do not use a guide or use a simple straight cylinder guide, the accuracy and efficiency of rope operation are greatly improved, and the device failure and downtime caused by rope jamming or mispositioning are effectively reduced.

[0050] The rope pressing wheel 71 of the back tensioning rope guide 70 is made of a rubber-coated metal wheel structure with a rubber layer thickness of 5 mm and a diamond-shaped non-slip pattern on the surface with a depth of 1 mm and a pitch of 3 mm. This design allows the rope pressing wheel 71 to provide sufficient friction when pressing the rope. The balance bridge 72 is a double-arm lever structure made of aluminum alloy with equal arm lengths connected by a shaft in the middle. A high-precision pressure sensor and adjusting nut are installed at the shaft. The tension bolt 73 is made of high-strength alloy steel. When in operation, the tension bolt 73 generates tension by pressing against the support body 10. The pressure of the rope pressing wheel 71 can be accurately adjusted by the adjusting nut. The pressure sensor monitors the pressure value in real time and feeds back to the control system, ensuring that the pressure of the two rope pressing wheels 71 is the same and stable within the set range. For example, when the set pressure is 200 N, the measurement error of the pressure sensor is within ±5 N, ensuring that the rope pressing wheel 71 is stably pressed against the fixed position of the friction wedge without flipping, effectively preventing the rope from sliding on the friction wedge, and improving the reliability of rope traction.

[0051] The spline shaft is made of alloy steel and serves as a power input shaft 40. One end of the spline shaft is connected to the electric power driving device through an elastic coupling. The elastic coupling can effectively buffer the impact load during start and stop, thereby protecting the spline shaft and the driving device. Both ends of the spline shaft are supported by bearings. The support frame 41 near the driving device is welded to the frame to form a hard support 80, thereby ensuring the stability of the shaft during power transmission. The other end of the support frame 41 is connected to the frame through a hinge and bolts to form a soft support 90. The hinge is a pin shaft with a diameter of 20 mm. The hinge structure of the soft support 90 can rotate within an angle range of 0-60 degrees. During the rope winding operation, the connecting bolts of the soft support 90 are loosened, and the support frame 41 is lifted to conveniently wind the rope into the friction wedge wheels and the guide pulleys. After the winding is completed, the soft support 90 is buckled and the bolts are tightened. The support connection between the soft support 90 and the spline shaft is a semi-open connection, which only restricts the movement of the spline shaft in the traction stress direction, thereby ensuring the normal operation of the shaft and facilitating the maintenance of the equipment and the replacement of the rope.

[0052] In actual work, taking the hoisting of a steel beam at a construction site as an example, one end of the rope is fixed to the lifting point of the steel beam, and the other end is introduced into the first friction wedge wheel 21 below the rope guide 50. Under the guidance of the rope guide 50, the rope smoothly enters the rope groove of the first friction wedge wheel 21, and then is introduced into the first guide pulley 31 above the first friction wedge wheel 21. Under the action of the guide pulley, the rope is accurately introduced into the second friction wedge wheel 22 below, and so on. Through the third and fourth friction wedge wheels 24, the rope is finally introduced into the automatic rope winder outside by the fourth guide pulley 34. In the whole process, the back tension rope guide 70 installed at the position of the fourth friction wedge wheel 24 always presses the rope and the fourth friction wedge wheel 24 tightly together to generate a stable back tension force. The electric power driving device is started, and the power is transmitted to the spline shaft through the coupling, driving the friction wedge wheel to rotate. Due to the friction force between the friction wedge wheel and the rope, the rope is started to be pulled, realizing the hoisting operation of the steel beam.

[0053] As mentioned above, the special rope groove design effectively prevents the rope from jumping and slipping, reduces the risk of hoisting accidents caused by rope slipping in long-term hoisting operations, and improves the safety of the operation. Through actual monitoring, there is no case of rope out of control caused by the problem of the friction wedge wheel in 100 consecutive hoisting operations. Compared with the traditional friction wheel device, the safety is significantly improved.

[0054] The high-precision spline connection and isolation sleeve design ensure stable operation and efficient power transmission between the friction wedges, reducing energy loss and equipment maintenance costs. After one year of operation, the wear of the spline shaft and friction wedges was inspected and found to be within the allowable range, requiring no replacement or repair. In contrast, equipment with traditional connection methods may require adjustment or replacement of some components within the same timeframe, thus reducing the overall maintenance cost of the equipment.

[0055] Meanwhile, the independently supported guide pulleys, arranged in a crisscross pattern with the friction wedges, precisely guide the rope's direction, preventing tangling and deviation, and ensuring the continuity and stability of the hoisting operation. In the complex environment of the construction site, this effectively reduces the number of work interruptions caused by rope problems, thus improving construction efficiency.

[0056] The high-quality aluminum alloy material and surface treatment enhance the wear resistance and corrosion resistance of the guide pulleys, extending the service life of the equipment, reducing the frequency of equipment replacement, and further saving costs. After undergoing accelerated aging tests simulating harsh environments, the guide pulleys maintained excellent performance and met operational requirements even after a testing cycle equivalent to 5 years of actual use.

[0057] The flared mouth and spiral guide groove structure of the rope guide greatly improves the accuracy and efficiency of rope introduction and extraction, and reduces equipment failure and downtime caused by rope jamming or misalignment.

[0058] Rope guides made of high-strength engineering plastics are lightweight, low-cost, and durable, making them easy to install and replace, thus reducing equipment maintenance difficulty and costs. In practical use, replacing the rope guide is simple and quick; an average worker can complete the replacement within 10 minutes, reducing the replacement time by more than half compared to traditional metal rope guides.

[0059] The synergistic effect of the rubber-coated rope pressure pulley 71, the balance bridge 72, and the tension bolt 73 ensures stable compression of the rope by the rope pressure pulley 71, provides reliable back tension, effectively prevents rope slippage, and improves the reliability of rope traction. In lifting tests with loads of varying weights, even when lifting loads close to the equipment's rated load, the rope remained stable on the friction wedge pulley without slippage, ensuring safe lifting operations.

[0060] The spline shaft support system, combining soft support 90 and hard support 80, facilitates rope winding and equipment maintenance, improving the equipment's operability and maintainability. During routine maintenance and rope replacement, operators can easily open the soft support 90, significantly reducing maintenance time and workload, and increasing equipment utilization.

[0061] In summary, the combination friction drum 1 has excellent performance and significant advantages in the field of rope traction and control through the unique design and cooperation of each component, can meet the high requirements of different industrial fields for heavy lifting and rope operation, and has broad application prospect and market value.

[0062] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A modular friction drum, characterized in that, Comprise: Support body; Friction wedge assembly, the friction wedge assembly is connected with the support body through power input shaft, the power input shaft circumscribes power device, power device drives the power input shaft to make the friction wedge assembly used for generating friction force with rope to realize the traction and winding of rope; Guide pulley assembly, the guide pulley assembly is connected with the support body, the guide pulley assembly is used to guide the course of rope between the friction wedge assembly.

2. The combined friction drum according to claim 1, wherein: The friction wedge assembly comprises a plurality of friction wedges arranged axially along the power input shaft; The guide pulley assembly comprises a plurality of guide pulleys independently mounted with the support body, the number of the guide pulleys corresponds to the number of the friction wedges, and the guide pulleys are arranged obliquely and crosswise with respect to the friction wedges, the entry side and the exit side of the guide pulleys correspond to two adjacent friction wedges respectively, so that the rope can be guided out of one friction wedge and guided into the next adjacent friction wedge.

3. The modular friction roller of claim 1, wherein, Further comprise: In the rope guide and the out rope guide, the out rope guide and the in rope guide are connected with the support body, and the in rope guide is used to ensure that the rope enters the friction wedge assembly smoothly, and the out rope guide is used to ensure that the rope is guided out of the rope groove of the guide pulley assembly.

4. The modular friction roller of claim 1 wherein, Further comprise: Back tension rope press, the back tension rope press is connected with the support body, and is used to provide back tension to prevent the rope from sliding, and the back tension rope press presses the rope in the rope groove of the friction wedge assembly.

5. The combined friction drum according to claim 4, wherein: The back tension rope press comprises a rope pressing wheel, a balance bridge and a tension bolt, the rope pressing wheel is connected with the balance bridge, one end of the tension bolt is connected with the balance bridge, and the other end is connected with the support body, the rope pressing wheel is used to press the rope in the rope groove of the friction wedge assembly, the tension bolt generates tension by pressing the support body, and the balance bridge ensures that the rope pressing wheel is stably pressed and the pressure is uniform.

6. The combined friction drum according to claim 5, wherein: The balance bridge adopts a symmetrical structure device, and the balance bridge is provided with two corresponding rope pressing wheels at the two symmetrical ends, and the balance bridge is arranged symmetrically to make the pressure of the two rope pressing wheels accurate and stable during work.

7. The combined friction drum according to claim 5, wherein: The surface of the rope pressing wheel of the back tension rope press is provided with anti-skid lines.

8. The combined friction drum according to claim 2, wherein: Any two adjacent friction wedges are separated by a spacer sleeve by a certain distance.

9. The combined friction drum according to any one of claims 1-8, wherein: One end of the power input shaft is rigidly connected with the support body as a hard support, and the other end is connected with the support body through a bolt as a soft support, and the rope is wound into the friction wedge assembly and the guide pulley assembly through one side of the soft support.

10. The modular friction drum of any one of claims 1-8, wherein, The rope groove depth of the friction wedge assembly is a certain multiple of the rope diameter, and the rope groove bottom diameter is equal to the rope diameter, and the two side surfaces of the rope groove are in the shape of an "8" to increase the attachment area and force of the rope and the rope groove.

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