Combined friction winding drum

Abstract

The invention discloses a combined friction drum. The combined friction drum comprises a support body; the friction wedge wheel assembly is connected with the support body through a power input shaft, the power input shaft is externally connected with a power device, the power input shaft is particularly a spline shaft, and the power device drives the power input shaft so that the friction wedge wheel assembly can be used for generating friction force with a rope to achieve traction and winding of the rope; the guide pulley assembly is connected with the support body, and the guide pulley assembly is used for guiding the trend of the rope between the friction wedge wheel assemblies.

Description

Technical Field

[0001] The present application relates to the technical field of engineering equipment, and in particular to a combined friction reel. Background Art

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

[0003] Traditional rope winding equipment usually uses a capstan, which is used to pull, lift or drag heavy objects, and tighten ropes. The drum is one of the core components of the capstan, which is used to wind the rope. In the related art, the capstan generally uses a simple smooth drum or ordinary friction wheel structure. When winding the rope, the smooth drum mainly relies on the small friction between the rope and the drum surface. When the heavy object is hoisted or the working environment is complex (such as a certain tilt angle, vibration, etc.), the rope is prone to slip, resulting in an unstable hoisting process. In severe cases, it may cause safety accidents, threatening the lives of construction workers and the progress of the project. Although ordinary friction wheels use friction to a certain extent, their structural design does not fully consider the dynamic characteristics and force changes of the rope, and the rope groove and the rope are poorly compatible. In the long-term use process, the rope is severely worn. Frequent replacement of ropes not only increases construction costs, but also reduces construction efficiency due to shutdowns for replacement. Summary of the invention

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

[0005] To achieve the above objectives, the technical solution adopted in the present application is: to provide a combined friction reel, including: a bracket body; a friction wedge wheel assembly, the friction wedge wheel assembly is connected to the bracket body through a power input shaft, the power input shaft is externally connected to a power device, the power device drives the power input shaft so that the friction wedge wheel assembly is used to generate friction with the rope to achieve traction and winding of the rope; a guide pulley assembly, the guide pulley assembly is connected to the bracket body, and the guide pulley assembly is used to guide the rope to run between the friction wedge wheel assemblies.

[0006] Preferably, the friction wedge wheel assembly includes a plurality of friction wedge wheels axially arranged along the power input shaft; the guide pulley assembly includes a plurality of guide pulleys independently mounted on the bracket body, the number of the guide pulleys corresponds to the number of the friction wedge wheels, and the guide pulleys are obliquely and cross-arranged relative to the friction wedge wheels, the inlet side and the outlet side of the guide pulley correspond to two adjacent friction wedge wheels respectively, so that the rope can be led out from one friction wedge wheel and introduced into the next adjacent friction wedge wheel.

[0007] As another preferred embodiment, the combined friction reel also includes: an entry rope guide and a exit rope guide, the exit rope guide and the entry rope guide are both connected to the bracket body, and the entry rope guide is used to ensure that the rope smoothly enters the friction wedge wheel assembly, and the exit rope guide is used to ensure that the rope is smoothly guided out of the rope groove of the guide pulley assembly.

[0008] Further preferably, the combined friction reel also includes: a back-pull rope pressure device, which is connected to the bracket body and is used to provide a back-pull force to prevent the rope from sliding, and the back-pull rope pressure device presses the rope into the rope groove of the friction wedge wheel assembly.

[0009] Preferably, the back-pull rope pressure device includes: a rope pressure wheel, a balance bridge and a tension bolt, the rope pressure wheel is connected to the balance bridge, one end of the tension bolt is connected to the balance bridge, and the other end is connected to the bracket body, the rope pressure wheel is used to press the rope into the rope groove of the friction wedge wheel assembly, the tension bolt presses against the bracket body to generate tension, and the balance bridge ensures that the rope pressure wheel is stably crimped and the pressure is uniform.

[0010] Preferably, the balancing bridge adopts a symmetrical structural device, and two corresponding rope-pressing wheels are symmetrically arranged at both ends of the balancing bridge. The symmetrically arranged balancing bridge ensures that the pressures of the two rope-pressing wheels are exactly the same and remain stable during operation.

[0011] Preferably, the surface of the rope pressing wheel of the back-pull rope pressing device is provided with anti-slip textures.

[0012] Preferably, any two adjacent friction wedge wheels are separated by a certain distance through a spacing sleeve.

[0013] Further preferably, one end of the power input shaft is rigidly connected to the bracket body by a hard support, and the other end is a soft support connected to the bracket body by bolts, and the rope passes through one side of the soft support and is wrapped around the friction wedge wheel assembly and the guide pulley assembly.

[0014] Further preferably, the rope groove depth of the friction wedge wheel assembly is a specific multiple of the rope diameter, the rope groove bottom diameter is equal to the rope diameter, and the two sides of the rope groove are in an "eight" shape to increase the adhesion area and adhesion force between the rope and the rope groove.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] It is lighter than the existing double-drum capstan, and does not have the impact caused by the slippage of the rope in the drum of the traditional single-drum capstan. It has excellent performance in the field of rope traction and control, can meet the high requirements of heavy object lifting and rope operation in different industrial fields, and has broad application prospects and market value.

[0017] During the continuous operation of the combined friction drum, the guide pulley assembly maintains a stable guiding effect on the rope, ensuring that the rope shuttles in an orderly manner between the friction wedge wheels according to the predetermined trajectory. Whether in low-speed traction or high-speed winding conditions, this stable cooperation can maintain the smooth operation of the system. For example, when lifting heavy objects such as steel beams at a construction site, even under complex environmental conditions, such as certain wind interference or slight vibrations at the construction site, the close cooperation between the guide pulley assembly and the friction wedge wheel 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 thus significantly improving the stability of the entire combined friction drum.

[0018] Furthermore, the guide pulley assembly is composed of multiple guide pulleys that are independently supported and installed and cross-arranged with multiple friction wedge wheels. The installation position has been accurately calculated and debugged. In actual work, the rope can be accurately guided out from one friction wedge wheel and introduced into the next one, effectively avoiding rope deviation and entanglement. For example, in the complex environment of a construction site, compared with traditional devices, the number of operation interruptions caused by rope problems can be greatly reduced, ensuring the continuous and stable lifting operation and maintaining the stability of the system operation.

[0019] The spline shaft support method that combines soft support and hard support facilitates rope winding and equipment maintenance, shortens maintenance time and workload, and improves equipment utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the combined friction reel;

[0021] Figure 2 It is a schematic diagram of the corresponding relationship between the friction wedge wheel assembly and the guide pulley assembly in the combined friction reel;

[0022] Figure 3 It is a structural schematic diagram of the combined friction reel from an upward perspective;

[0023] Figure 4 It is a schematic diagram of the structure of the hard support side of the combined friction reel from a side view;

[0024] Figure 5 It is a schematic diagram of the structure of the soft support side of the combined friction reel;

[0025] Figure 6 It is a structural schematic diagram of the back-pulling rope pressure device;

[0026] Figure 7 It is a schematic diagram of the structure of the rope inlet guide and the rope outlet guide.

[0027] In the figure: 1, combined friction drum; 10, bracket body; 20, friction wedge wheel assembly; 21, first friction wedge wheel; 22, second friction wedge wheel; 23, third friction wedge wheel; 24, fourth friction wedge wheel; 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-pull rope pressure device; 71, rope pressure wheel; 72, balance bridge; 73, tension bolt; 80, hard support; 90, soft support; α, offset angle. DETAILED DESCRIPTION

[0028] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0030] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0031] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0032] In a preferred embodiment, see Figures 1 to 7 The present application document provides a combined friction reel 1, comprising: a support body 10; a friction wedge wheel assembly 20, the friction wedge wheel assembly 20 is connected to the support body 10 through a power input shaft 40, the power input shaft 40 is externally connected to a power device, the power input shaft 40 is specifically a spline shaft, the power device drives the power input shaft 40 so that the friction wedge wheel assembly 20 is used to generate friction with the rope to achieve traction and winding of the rope; a guide pulley assembly 30, the guide pulley assembly 30 is connected to the support body 10, and the guide pulley assembly 30 is used to guide the direction of the rope between the friction wedge wheel assemblies 20.

[0033] As a preference, the friction wedge wheel assembly 20 includes a plurality of friction wedge wheels axially arranged along the power input shaft 40; the guide pulley assembly 30 includes a plurality of guide pulleys independently installed on the bracket body 10, the number of guide pulleys corresponds to the number of friction wedge wheels, and the guide pulleys are inclined and cross-arranged relative to the friction wedge wheels, and the input wheel side and the output wheel side of the guide pulley correspond to two adjacent friction wedge wheels respectively, so that the rope can be led out from one friction wedge wheel and introduced into the next adjacent friction wedge wheel.

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

[0035] The guide pulley has a pulley groove structure, and the four guide pulleys are independently supported and installed. The installation position is cross-arranged with the friction wedge wheel, and the cross angle just ensures that the guide pulley can guide the rope from one friction wedge wheel and introduce it into the next friction wedge wheel.

[0036] As another preferred embodiment, the combined friction reel 1 also includes: an inlet rope guide 50 and an outlet rope guide 60, the outlet rope guide 60 and the inlet rope guide 50 are both connected to the bracket body 10, and the inlet rope guide 50 is used to ensure that the rope smoothly enters the friction wedge wheel assembly 20, and the outlet rope guide 60 is used to ensure that the rope is smoothly guided out of the rope groove of the guide pulley assembly 30.

[0037] Further preferably, the combined friction reel 1 also includes: a back-pull rope pressure device 70, which is connected to the bracket body 10 and is used to provide a back-pull force to prevent the rope from sliding, and the back-pull rope pressure device 70 presses the rope tightly into the rope groove of the friction wedge wheel assembly 20.

[0038] Preferably, the back-pulling rope pressure device 70 includes: a rope pressure wheel 71, a balancing bridge 72 and a tension bolt 73. The rope pressure wheel 71 is connected to the balancing bridge 72, one end of the tension bolt 73 is connected to the balancing bridge 72, and the other end is connected to the bracket body 10. The rope pressure wheel 71 is used to press the rope into the rope groove of the friction wedge wheel assembly 20, the tension bolt 73 presses against the bracket body 10 to generate tension, and the balancing bridge 72 ensures that the rope pressure wheel 71 is stably crimped and the pressure is uniform.

[0039] Preferably, the balancing bridge 72 adopts a symmetrical structure device, and two corresponding rope pressing wheels 71 are symmetrically arranged at both ends of the balancing bridge 72. The symmetrically arranged balancing bridge 72 ensures that the pressure of the two rope pressing wheels 71 is exactly the same and remains stable during operation.

[0040] Therefore, when the combined friction drum 1 in the present application document is working, the rope on the traction side is introduced by the rope guide 50 to the bottom of the first friction wedge wheel 21 for winding, and introduced from the top of the first friction wedge wheel 21 to the first guide pulley 31, and then introduced from the first guide pulley 31 to the bottom of the second friction wedge wheel 22 for winding, and then introduced from the top of the second friction wedge wheel 22 to the second guide pulley 32, and similarly wound into the third and fourth friction wedge wheels 24, and led out to the external automatic rope reel by the fourth guide pulley 34. Specifically, a back-traction rope pressing device 70 is installed at the lead-out position of the fourth friction wedge wheel 24, which presses the rope and the fourth friction wedge wheel 24 tightly together to form a back-traction force, thereby preventing the rope from sliding freely in the friction wedge wheel assembly 20 and the guide pulley assembly 30.

[0041] Preferably, the surface of the rope pressing wheel 71 of the back-pull rope pressing device 70 is provided with anti-slip textures, or a structure such as a rubber layer to increase friction, so as to further enhance the compression effect on the rope.

[0042] Preferably, any two adjacent friction wedge wheels are separated by a certain distance through an isolation sleeve, and correspondingly, adjacent guide pulleys are also independently arranged at a certain distance to ensure that they can run stably and do not interfere with each other when coaxially installed on the spline shaft.

[0043] Further preferably, one end of the power input shaft 40 is rigidly connected to the bracket body 10 by a hard support 80, and the other end is connected to the bracket body 10 by a soft support 90 connected by bolts, 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 can be connected to the external power device through a coupling. Both ends of the spline shaft support are bearing supports. Specifically, the support frame 41 used to support the spline shaft at one end is rigidly connected to the bracket body 10 to form a hard support 80, and the support frame 41 of the spline shaft at the other end is hinged and bolted to the bracket body 10 to form a soft support 90. Therefore, it is only necessary to open the connecting bolts of the soft support 90 and lift the support frame 41 to wind the rope into the friction wedge wheel and the guide pulley. After all the ropes are wound in, the soft support 90 frame is buckled, the bolts are tightened, and the combined friction reel 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 restrict the movement of the spline shaft in the traction force direction.

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

[0045] Among them, it is preferred in the present application document that the rope groove depth of a single friction wedge wheel in the friction wedge wheel assembly 20 is twice the rope diameter of the rope, which can effectively prevent the rope from jumping. The diameter of the bottom of the rope groove is the same as the diameter of the rope. When the rope is deformed by force, its two sides form a wedge-shaped contact with the side walls of the rope groove, which effectively increases the adhesion area and significantly increases the adhesion force, effectively preventing the rope from slipping in the groove. The two sides of the rope groove are in an eight-shaped structure, which facilitates the rope to wedge 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 middle is separated by a certain distance with an isolation sleeve. The rope is preferably a steel wire rope.

[0046] Further, the combined friction wedge wheel in the present application document is described in combination with a specific use example, wherein the friction wedge wheel assembly 20 includes 4 friction wedge wheels, which are made of high-strength alloy steel and are precisely processed. The rope groove depth is precisely designed to be twice the rope diameter. For example, when a rope with a diameter of 10 mm is used, the rope groove depth is 20 mm. The bottom diameter of the rope groove is the same as the rope diameter, both of which are 10 mm. The two sides of the rope groove are in a standard figure eight structure with an angle of 30 degrees. This design enables the rope to form a wedge-shaped contact with the side wall of the rope groove when it is stressed. When the rope is deformed to a certain extent by the tension, the contact area between its two sides and the side wall of the rope groove is significantly increased, and the adhesion is improved by about 50% compared with the ordinary rope groove structure. In actual tests, when a tension of 5 kN is applied to the rope, the rope designed with the friction wedge wheel has almost no sliding phenomenon in the rope groove, while the traditional flat groove friction wheel has obvious sliding displacement under the same tension, which effectively proves its excellent performance in preventing the rope from jumping and slipping.

[0047] In terms of installation, all friction wedge wheels are connected to the same spline shaft through 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 wedge wheel and the spline shaft, and the transmission efficiency can reach more than 95%. Adjacent friction wedge wheels are separated by nylon isolation sleeves with a thickness of 10mm. Nylon material has good wear resistance and self-lubricating properties, which can effectively isolate the friction wedge wheels and reduce friction loss and noise during operation.

[0048] See Figure 2 The guide pulley assembly 30 is composed of 4 independently supported guide pulleys. The pulley is made of high-quality aluminum alloy and the surface is hard anodized to improve wear resistance and corrosion resistance. The pulley groove is a U-shaped groove, and the groove radius is 2mm larger than the rope radius to ensure that the rope can slide smoothly in the pulley groove. The support frame 41 of the guide pulley is made of stainless steel and is fixed to the frame by bolts. The installation orientation of each guide pulley is arranged crosswise with the friction wedge wheel. The crossing angle is accurately calculated and debugged, and the offset angle α of the guide pulley relative to the friction wedge wheel is 45 degrees. In the actual working process, when the rope is led out from a friction wedge wheel, it can be accurately guided to the next friction wedge wheel by the guide pulley, which effectively avoids the deviation and entanglement of the rope and ensures the continuity and stability of the rope traction work.

[0049] The rope guide 50 for entering the rope and the rope guide 60 for exiting the rope have the same structure and are both made of high-strength engineering plastic injection molding. The main body is in the shape of a bell mouth, the diameter of the large end of the bell mouth is three times the diameter of the rope, and the diameter of the small end is adapted to the diameter of the rope. A spiral guide groove is provided inside, and the depth of the guide groove is 3mm and the width is 5mm. When the rope approaches the rope guide, the bell 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 wheel or the guide pulley. In many experiments, the combined friction drum 1 using the rope guide has a high success rate in the process of rope introduction and extraction. Compared with the device without using a rope guide or using a simple straight-tube rope guide, the accuracy and efficiency of rope operation are greatly improved, and the equipment failure and downtime caused by rope jamming or misalignment are effectively reduced.

[0050] The rope pressing wheel 71 of the back-pulling rope pressing device 70 adopts a rubber-wrapped metal wheel structure, the thickness of the rubber layer is 5mm, and the surface is provided with diamond-shaped anti-skid lines, the depth of the anti-skid lines is 1mm, and the spacing is 3mm. This design enables 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 lengths of both arms connected by a central rotating shaft, and a high-precision pressure sensor and an adjusting nut are installed at the rotating shaft. The tension bolt 73 is made of high-strength alloy steel. When working, the tension bolt 73 presses against the bracket body 10 to generate tension. The pressure of the rope pressing wheel 71 can be accurately adjusted by adjusting the nut. The pressure sensor monitors the pressure value in real time and feeds back to the control system to ensure 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 200N, the measurement error of the pressure sensor is within ±5N, which ensures that the rope pressing wheel 71 is stably crimped to the fixed position of the friction wedge wheel without flipping, effectively preventing the rope from sliding on the friction wedge wheel, and improving the reliability of rope traction.

[0051] The spline shaft is made of alloy steel and serves as the power input shaft 40. One end is connected to the electric power drive device through an elastic coupling. The elastic coupling can effectively buffer the impact load during starting and stopping, and protect the spline shaft and the drive device. Both ends of the spline shaft are supported by bearings. The support frame 41 near one end of the drive device is welded with the frame to form a hard support 80 to ensure the stability of the shaft during power transmission. The support frame 41 at the other end is connected to the frame by hinges and bolts to form a soft support 90. A pin with a diameter of 20 mm is used at the hinge. The rotation angle range of the hinged structure of the soft support 90 is 0-60 degrees. During the rope winding operation, it is only necessary to open the connecting bolts of the soft support 90 and lift the support frame 41 to easily wind the rope around the friction wedge wheel and the guide pulley. After completing the rope winding, buckle the soft support 90 frame and tighten the bolts. The support connection between the soft support 90 frame and the spline shaft is a semi-open connection, which only restricts the movement of the spline shaft in the traction force direction. While ensuring the normal operation of the shaft, it is convenient for equipment maintenance and rope replacement operations.

[0052] In actual work, taking the lifting of steel beams at a construction site as an example, first, one end of the rope is fixed on the lifting point of the steel beam, and the other end is introduced by the rope guide 50 to the bottom of the first friction wedge wheel 21 and rolled up. 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 from above the first friction wedge wheel 21. Under the action of the guide pulley, the rope is accurately introduced to the bottom of the second friction wedge wheel 22 and rolled up. Similarly, it passes through the third and fourth friction wedge wheels 24, and is finally led out by the fourth guide pulley 34 to the external automatic rope reel. During the whole process, the back-traction rope pressure device 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, generating a stable back-traction force. Start the electric power drive device, the power is transmitted to the spline shaft through the coupling, driving the friction wedge wheel to rotate, and due to the friction between the friction wedge wheel and the rope, the rope begins to be pulled, realizing the lifting operation of the steel beam.

[0053] As mentioned above, its special rope groove design effectively prevents rope skipping and slipping, reduces the risk of lifting accidents caused by rope slipping in long-term lifting operations, and improves the safety of operations. Through actual monitoring, in 100 consecutive lifting operations, there was no rope loss of control due to friction wedge problems. Compared with traditional friction wheel devices, safety is significantly improved.

[0054] The high-precision spline connection and isolation sleeve design ensures stable operation and power transmission efficiency between the friction wedge wheels, reducing energy loss and equipment maintenance costs. After one year of operation, the wear of the spline shaft and friction wedge wheel was tested and found to be within the allowable range, without the need for replacement or repair. Traditional connection equipment may need to adjust or replace some parts in the same period of time, reducing the overall maintenance cost of the equipment.

[0055] At the same time, the guide pulleys installed with independent supports and arranged crosswise with the friction wedge wheels can accurately guide the direction of the ropes, avoiding the entanglement and deviation of the ropes, and ensuring the continuity and stability of the lifting operation. In the complex environment of the construction site, the number of operation interruptions caused by rope problems is effectively reduced, and the construction efficiency is improved.

[0056] High-quality aluminum alloy material and surface treatment improve the wear resistance and corrosion resistance of the guide pulley, extend the service life of the equipment, reduce the frequency of equipment replacement, and further save costs. After accelerated aging tests simulating harsh environments, the guide pulley can still maintain good performance and meet work requirements after a test cycle equivalent to 5 years of actual use.

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

[0058] The rope guide made of high-strength engineering plastic has the advantages of light weight, low cost, and not easy to damage. It is easy to install and replace, reducing the difficulty and cost of equipment maintenance. In actual use, the replacement of the rope guide is simple and quick. An ordinary worker can complete the replacement within 10 minutes, which is more than half the time of the traditional metal rope guide.

[0059] The synergistic effect of the rubber-wrapped rope-pressing wheel 71, the balance bridge 72 and the tension bolt 73 ensures that the rope-pressing wheel 71 can stably press the rope, provide reliable back-pulling force, effectively prevent the rope from sliding, and improve the reliability of rope traction. In the test of hoisting objects of different weights, even when hoisting objects close to the rated load of the equipment, the rope can remain stable on the friction wedge wheel without sliding, ensuring the safety of the hoisting operation.

[0060] The spline shaft support method combining soft support 90 and hard support 80 facilitates the rope winding operation and equipment maintenance, improving the operability and maintainability of the equipment. During the daily maintenance and rope replacement of the equipment, the operator can easily open the soft support 90 for operation, greatly shortening the maintenance time and workload and improving the utilization rate of the equipment.

[0061] In summary, the combined friction drum 1 exhibits excellent performance and significant advantages in the field of rope traction and control through the unique design and coordinated work of each component, can meet the high requirements of heavy object lifting and rope operation in different industrial fields, and has broad application prospects 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 by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A combined friction reel, characterized in that: include: The bracket body; A friction wedge wheel assembly, wherein the friction wedge wheel assembly is connected to the support body through a power input shaft, the power input shaft is externally connected to a power device, and the power device drives the power input shaft so that the friction wedge wheel assembly is used to generate friction with the rope to achieve traction and winding of the rope; A guide pulley assembly is connected to the support body and is used to guide the direction of the rope between the friction wedge wheel assemblies.

2. The combined friction reel according to claim 1, characterized in that: The friction wedge wheel assembly includes a plurality of friction wedge wheels axially arranged along the power input shaft; The guide pulley assembly includes a plurality of guide pulleys independently installed on the bracket body, the number of the guide pulleys corresponds to the number of the friction wedge wheels, and the guide pulleys are arranged obliquely and crosswise relative to the friction wedge wheels, and the inlet side and the outlet side of the guide pulley correspond to two adjacent friction wedge wheels respectively, so that the rope can be led out from one friction wedge wheel and introduced into the next adjacent friction wedge wheel.

3. The combined friction reel according to claim 1, characterized in that: Also includes: A rope entry guide and a rope exit guide, both of which are connected to the bracket body, and the rope entry guide is used to ensure that the rope smoothly enters the friction wedge wheel assembly, and the rope exit guide is used to ensure that the rope is smoothly guided out of the rope groove of the guide pulley assembly.

4. The combined friction reel according to claim 1, characterized in that: Also includes: A back-pull rope pressure device is connected to the support body and is used to provide a back-pull force to prevent the rope from sliding. The back-pull rope pressure device presses the rope tightly into the rope groove of the friction wedge wheel assembly.

5. The combined friction reel according to claim 4, characterized in that: The back-pulling rope pressure device includes: a rope pressure wheel, a balance bridge and a tension bolt. The rope pressure wheel is connected to the balance bridge, one end of the tension bolt is connected to the balance bridge, and the other end is connected to the bracket body. The rope pressure wheel is used to press the rope into the rope groove of the friction wedge wheel assembly, the tension bolt presses the bracket body to generate tension, and the balance bridge ensures that the rope pressure wheel is stably crimped and the pressure is uniform.

6. The combined friction reel according to claim 5, characterized in that: The balancing bridge adopts a symmetrical structural device, and two corresponding rope pressing wheels are arranged at the symmetrical ends of the balancing bridge. The symmetrically arranged balancing bridge ensures that the pressures of the two rope pressing wheels are exactly the same and remain stable during operation.

7. The combined friction reel according to claim 4, characterized in that: The surface of the rope pressing wheel of the back-pull rope pressing device is provided with anti-slip patterns.

8. The combined friction reel according to claim 2, characterized in that: Any two adjacent friction wedge wheels are separated by a certain distance through a spacing sleeve.

9. The combined friction reel according to any one of claims 1 to 8, characterized in that: One end of the power input shaft is rigidly connected to the bracket body through a hard support, and the other end is a soft support connected to the bracket body through bolts. The rope passes through one side of the soft support and is wound around the friction wedge wheel assembly and the guide pulley assembly.

10. The combined friction reel according to any one of claims 1 to 8, characterized in that: The rope groove depth of the friction wedge wheel assembly is a specific multiple of the rope diameter, and the bottom diameter of the rope groove is equal to the rope diameter. The two sides of the rope groove are in an "eight" shape to increase the adhesion area and adhesion force between the rope and the rope groove.

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