Friction drum

Abstract

The utility model relates to a friction drum which comprises a hub, a detachable drum leather assembly and a connecting assembly. The detachable winding drum skin assembly comprises a plurality of winding drum skins, and winding grooves are formed in the winding drum skins. The connecting assembly comprises a plurality of connecting pieces, each connecting piece is detachably connected with the two opposite ends of the two adjacent winding drum skins, and the multiple winding drum skins are enclosed to form an annular structure surrounding the hub. Wherein at least one of the multiple connecting pieces comprises a pre-pressing piece, the pre-pressing piece provides elastic force to tension the two winding drum skins connected through the connecting piece, so that the multiple winding drum skins of the annular structure can tightly hold the hub, it is guaranteed that the winding drum skins and the hub do not slip, and cable grooves in the winding drum skins make contact with a cable to provide stable friction force. And by utilizing the elasticity of the pre-pressing piece, the shearing force borne by the connecting piece can be reduced, and the connecting piece is prevented from being broken. When the cable groove is abraded, the winding drum skin can be conveniently taken down from the hub to be replaced by detaching the connecting piece.

Description

Technical Field

[0001] The utility model relates to the field of tension-reducing traction winches, in particular to a friction roller. Background Art

[0002] Friction drums are often used in tension-reducing traction winches. The friction drum is provided with a cable groove for winding cables, and the tension of the cables is reduced by the friction between the cable groove and the cables.

[0003] In the related art, the cable trough is fixed on the friction roller and cannot be replaced. During long-term use, the cable trough is prone to wear, affecting the tension reduction effect. In addition, for cables with different wire diameters, if the size of the cable trough does not match, the friction force will be reduced, resulting in poor tension reduction effect. Utility Model Content

[0004] The utility model aims to provide a friction roller, which can be conveniently replaced when the cable groove is worn, and can replace the cable grooves of different sizes according to the specifications of the cables.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions.

[0006] The utility model provides a friction roller, which comprises: a hub;

[0007] A detachable drum skin assembly comprises a plurality of drum skins, each of which is provided with a cable groove;

[0008] A connecting assembly, comprising a plurality of connecting members, each of which is detachably connected to two opposite ends of two adjacent roll skins, and enables the plurality of roll skins to enclose and form an annular structure surrounding the wheel hub;

[0009] Among the plurality of connecting members, at least one connecting member includes a pre-pressing member, and the pre-pressing member provides elastic force to tension the two roll skins connected by the connecting member.

[0010] In some embodiments of the present application, the wheel hub includes a main body and a baffle connected to the main body;

[0011] The baffle extends along the circumferential direction of the main body, and two baffles are arranged at intervals along the radial direction of the main body;

[0012] The detachable roll skin assembly is clamped between the two baffles.

[0013] In some embodiments of the present application, the baffle is provided with a first mounting position, and the first mounting position is provided with two first waist-shaped holes;

[0014] Among the plurality of connecting members, at least one connecting member is a first connecting member, and the first connecting member includes two first hinge shafts, a first connecting shaft, two pre-pressing members and two first fixing rings;

[0015] The two first hinge shafts are respectively inserted into the two first waist-shaped holes and two ends facing each other on the two adjacent roll skins, and the first hinge shafts can move in the first waist-shaped holes;

[0016] The first hinge shaft is provided with a first through hole;

[0017] The first connecting shaft is inserted into the first through holes on the two first hinge shafts;

[0018] The two pre-pressed pieces correspond to the first fixing ring one by one and are respectively connected to two ends of the first connecting shaft, and the first fixing ring clamps the pre-pressed piece between the first fixing ring and the first hinge shaft.

[0019] In some embodiments of the present application, a second mounting position is provided on the baffle;

[0020] The second mounting position is provided with two second through holes;

[0021] Among the plurality of connecting members, at least one connecting member is a second connecting member, and the second connecting member includes a second connecting plate, two second hinge shafts and two second fixing rings;

[0022] The second connecting plate is provided with two second through holes;

[0023] The two second hinge shafts are respectively penetrated through the two second through holes, the two second through holes and the two opposite ends of the two adjacent roll skins;

[0024] The two second fixing rings are respectively connected to the two second hinge shafts, and lock the second connecting plate on the baffle.

[0025] In some embodiments of the present application, the detachable roll skin assembly includes three roll skins;

[0026] The connecting assembly includes one first connecting member and two second connecting members.

[0027] In some embodiments of the present application, the friction roller further includes a fastener, which passes through the baffle and connects the baffle and the roll skin.

[0028] In some embodiments of the present application, the baffle is annular, and the inner diameter of the baffle is smaller than the outer diameter of the main body, and the outer diameter of the baffle is larger than the outer diameter of the main body;

[0029] The edges of the two baffles close to the inner diameter are detachably connected to the two end surfaces of the main body in the radial direction.

[0030] In some embodiments of the present application, the connecting member includes two hinge shafts;

[0031] The two hinge shafts are detachably connected to the two opposite ends of the two adjacent roll skins, and the roll skins can rotate around the hinge shafts;

[0032] There is a gap between the two end portions facing each other on two adjacent roll skins, which allows the roll skins to rotate relative to the hinge shaft.

[0033] In some embodiments of the present application, the connecting member is connected to the side of the roll skin in the radial direction.

[0034] In some embodiments of the present application, the connection assembly is provided with two groups;

[0035] The plurality of connecting members in each group of the connecting assemblies are arranged at intervals along the circumferential direction of the hub;

[0036] The two groups of connecting components are symmetrically arranged on both sides of the detachable roll skin component in the radial direction.

[0037] It can be seen from the above technical solutions that the embodiments of the utility model have at least the following advantages and positive effects:

[0038] In the friction roller of the embodiment of the utility model, multiple connecting pieces are used to connect multiple reel skins into a ring structure surrounding the hub, and the cable grooves on the reel skins can be used to wind cables. The tension of the cables is reduced by the friction between the cable grooves and the cables.

[0039] The pre-pressed part in the connector can provide elastic force to tension the two reels connected by the connector, so that the multiple reels in the annular structure can tightly hold the hub, ensuring that there is no slippage between the reels and the hub, and the cable groove on the reels provides stable friction when in contact with the cable. In addition, the elastic force of the pre-pressed part can reduce the shear force on the connector and prevent the connector from breaking.

[0040] When the cable groove is worn, the reel skin can be easily removed from the hub for replacement by disassembling the connecting piece. When the size of the cable groove does not match the specification of the cable, the reel skin with a corresponding size cable groove can also be replaced by disassembling the connecting piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The various objects, features and advantages of the present invention will become more apparent by considering the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are only exemplary illustrations of the present invention and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always represent the same or similar parts. Among them:

[0042] Figure 1 is a schematic structural diagram of a friction roller according to an exemplary embodiment.

[0043] Figure 2 yes Figure 1 Schematic diagram of the structure from another angle.

[0044] Figure 3 yes Figure 2 Schematic diagram of the structure in which the first connecting member is not connected to the reel skin.

[0045] Figure 4 yes Figure 1 Schematic diagram of the structure after removing the detachable roll skin assembly.

[0046] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure of area A in the middle.

[0047] Figure 6 yes Figure 4 Schematic diagram of the enlarged structure of area B in the middle.

[0048] The description of the accompanying drawings is as follows: 1. hub; 11. main body; 12. baffle; 121. first mounting position; 1211. first waist-shaped hole; 122. second mounting position; 1221. second through hole; 2. detachable reel skin assembly; 21. reel skin; 211. cable groove; 3. connecting assembly; 31. connecting member; 311. first connecting member; 3111. pre-pressed member; 3112. first hinge shaft; 3113. first connecting shaft; 3114. first fixing ring; 312. second connecting member; 3121. second connecting plate; 3122. second hinge shaft; 3123. second fixing ring; 4. fastener. DETAILED DESCRIPTION

[0049] Although the present invention can be easily embodied as embodiments of different forms, only some of the specific embodiments are shown in the drawings and described in detail in this specification. It should be understood that this description should be regarded as an exemplary description of the principles of the present invention and is not intended to limit the present invention to that described herein.

[0050] Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the utility model, rather than implying that each embodiment of the utility model must have the described feature. In addition, it should be noted that this specification describes many features. Although some features can be combined together to illustrate possible system designs, these features can also be used in other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0051] In the embodiments shown in the drawings, the indications of directions (such as up, down, left, right, front and back) used to explain the structure and movement of various elements of the utility model are not absolute but relative. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions also change accordingly.

[0052] See also Figures 1 to 6 A friction roller provided in one embodiment of the utility model includes a hub 1, a detachable roll skin assembly 2 and a connecting assembly 3.

[0053] The detachable reel cover assembly 2 includes a plurality of reel covers 21 , and a cable groove 211 is provided on the reel covers 21 .

[0054] The connecting assembly 3 includes a plurality of connecting members 31 . Each connecting member 31 is detachably connected to two opposite ends of two adjacent reel skins 21 , and enables the plurality of reel skins 21 to enclose and form an annular structure surrounding the wheel hub 1 .

[0055] Among the multiple connecting members 31 , at least one connecting member 31 includes a pre-pressing member 3111 , and the pre-pressing member 3111 provides elastic force to tension the two reel skins 21 connected by the connecting member 31 .

[0056] Through the above structural design, multiple connecting members 31 are used to connect multiple reel skins 21 into a ring structure surrounding the hub 1, and the cable groove 211 on the reel skin 21 can be used to wind the cable. The friction between the cable groove 211 and the cable is used to reduce the tension of the cable.

[0057] The pre-pressing member 3111 in the connecting member 31 can provide elastic force to tension the two reel skins 21 connected by the connecting member 31, so that the multiple reel skins 21 of the annular structure can tightly hold the hub 1, ensuring that there is no slippage between the reel skin 21 and the hub 1, so that the cable groove 211 on the reel skin 21 contacts the cable to provide stable friction. In addition, the elastic force of the pre-pressing member 3111 can reduce the shear force on the connecting member 31, and prevent the connecting member 31 from breaking.

[0058] When the cable groove 211 is worn, the reel skin 21 can be easily removed from the hub 1 for replacement by disassembling the connector 31. When the size of the cable groove 211 does not match the specification of the cable, the reel skin 21 with a cable groove 211 of corresponding size can also be replaced by disassembling the connector 31.

[0059] The hub 1 includes a main body 11 and a baffle 12 connected to the main body 11. The baffle 12 extends along the circumferential direction of the main body 11, and two baffles 12 are arranged at intervals along the radial direction of the main body 11. The detachable roll skin assembly 2 is sandwiched between the two baffles 12.

[0060] The two baffles 12 are used to clamp the detachable roll cover assembly 2 on both sides of the detachable roll cover assembly 2 in the radial direction, so as to prevent the detachable roll cover assembly 2 from slipping and detaching from the wheel hub 1 in the radial direction of the wheel hub 1 .

[0061] The baffle 12 is provided with a first mounting position 121, and the first mounting position 121 is provided with two first waist-shaped holes 1211. Among the multiple connecting members 31, at least one connecting member 31 is a first connecting member 311, and the first connecting member 311 includes two first hinge shafts 3112, a first connecting shaft 3113, two pre-pressing members 3111 and two first fixing rings 3114. The two first hinge shafts 3112 are respectively penetrated in the two first waist-shaped holes 1211 and the two ends facing each other on the two adjacent roll skins 21, and the first hinge shafts 3112 can move in the first waist-shaped holes 1211.

[0062] The first hinge shaft 3112 is provided with a first through hole. The first connecting shaft 3113 is passed through the first through holes on the two first hinge shafts 3112. The two pre-pressing pieces 3111 correspond to the first fixing ring 3114 one by one and are respectively connected to the two ends of the first connecting shaft 3113, and the first fixing ring 3114 clamps the pre-pressing piece 3111 between the first fixing ring 3114 and the first hinge shaft 3112.

[0063] The elastic force provided by the pre-pressed member 3111 can tension the two first hinge shafts 3112. The first hinge shafts 3112 can move in the first waist-shaped hole 1211 to adapt to the tension of the pre-pressed member 3111. The pre-pressed member 3111 makes the two first hinge shafts 3112 tend to approach each other. It can be understood that the friction between the cable and the cable groove 211 will make the two adjacent drum skins 21 move away from each other, that is, the shear force generated on the first connecting shaft 3113 will make the two first hinge shafts 3112 tend to move away from each other. The pre-pressed member 3111 is allowed to be compressed to reduce the shear force on the connecting member 31 and avoid the connecting member 31 from breaking. In this embodiment, the first connecting shaft 3113 and one of the first fixing rings 3114 are the screw and head of the bolt, and the other first fixing ring 3114 is a nut. The pre-pressed member 3111 can be a disc spring.

[0064] The baffle 12 is provided with a second mounting position 122. The second mounting position 122 is provided with two second through holes 1221. Among the multiple connecting members 31, at least one connecting member 31 is a second connecting member 312, and the second connecting member 312 includes a second connecting plate 3121, two second hinge shafts 3122 and two second fixing rings 3123. The second connecting plate 3121 is provided with two second through holes. The two second hinge shafts 3122 are respectively penetrated through the two second through holes, the two second through holes 1221 and the two opposite ends of the two adjacent roll skins 21. The two second fixing rings 3123 are respectively connected to the two second hinge shafts 3122, and the second connecting plate 3121 is locked on the baffle 12. In this embodiment, the second fixing ring 3123 is a nut. The second through hole 1221 is also a waist-shaped hole.

[0065] The connecting member 31 includes two hinge shafts, such as the first connecting member 311 includes two first hinge shafts 3112, and the second connecting member 312 includes two second hinge shafts 3122. The two hinge shafts are detachably connected to the two opposite ends of the two adjacent roll skins 21, and the roll skins 21 can rotate around the hinge shafts. There is a gap between the two opposite ends of the two adjacent roll skins 21 to allow the roll skins 21 to rotate relative to the hinge shafts.

[0066] It should be noted that during the manufacturing process, the multiple roll skins 21 are made by bending a metal strip into a fully circular detachable roll skin assembly 2, and then cutting it into multiple sections to obtain multiple roll skins 21. After cutting, the multiple roll skins 21 will restore elastic deformation to a certain extent, so that the curvature of the roll skins 21 becomes smaller. When the multiple roll skins 21 are connected by multiple connecting members 31, the design that the roll skins 21 can rotate around the hinge axis allows the two ends of the roll skins 21 to be bent under the action of the connecting members 31 and the wheel hub 1, so that the curvature of the roll skin 21 is close to the curvature of the wheel hub 1, so that the roll skin 21 fits the wheel hub 1 more closely.

[0067] The detachable roll skin assembly 2 includes three roll skins 21, and the connecting assembly 3 includes a first connecting member 311 and two second connecting members 312. Compared with the scheme with two roll skins 21, the length of each section of the three roll skins 21 is shorter, which reduces the degree of elastic deformation recovery of the roll skin 21 after cutting, so that the curvature of the roll skin 21 is closer to the curvature of the wheel hub 1. Of course, in other embodiments, more than three roll skins 21 and more than three connecting members 31 may also be provided. The angle of each roll skin 21 is 120 degrees and the length is 1 / 3 of a circle. The connecting assembly 3 is provided with two groups, and the multiple connecting members 31 in each group of the connecting assembly 3 are arranged at intervals along the circumferential direction of the wheel hub 1, and the two groups of the connecting assembly 3 are symmetrically arranged on both sides of the radial direction of the detachable roll skin assembly 2.

[0068] The two groups of connecting components 3 can more stably connect multiple roll skins 21. In this embodiment, each group of connecting components 3 includes a first connecting member 311 and two second connecting members 312. The two groups of connecting components 3 have two first connecting members 311 and four second connecting members 312. Accordingly, two first installation positions 121 are provided, and four second installation positions 122 are provided.

[0069] The connecting member 31 is connected to the radial side of the drum skin 21 , which makes it easier to assemble and disassemble the connecting member 31 . Meanwhile, the connecting member 31 will not interfere with the cables in the cable groove 211 .

[0070] The friction roller further includes a fastener 4, which penetrates the baffle 12 and connects the baffle 12 and the drum skin 21. The fastener 4 may be a bolt. In this embodiment, the baffle 12 is also connected to the main body 11 by the fastener 4. The baffle 12 is annular, and the inner diameter of the baffle 12 is smaller than the outer diameter of the main body 11, and the outer diameter of the baffle 12 is larger than the outer diameter of the main body 11. The edges of the two baffles 12 close to the inner diameter are detachably connected to the two end surfaces of the main body 11 in the radial direction.

[0071] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in a variety of forms without departing from the spirit or essence of the utility model, it should be understood that the above-mentioned embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A friction roller, characterized in that: include: Wheel hub; A detachable drum skin assembly comprises a plurality of drum skins, each of which is provided with a cable groove; A connecting assembly, comprising a plurality of connecting members, each of which is detachably connected to two opposite ends of two adjacent roll skins, and enables the plurality of roll skins to enclose and form an annular structure surrounding the wheel hub; Among the plurality of connecting members, at least one connecting member includes a pre-pressing member, and the pre-pressing member provides elastic force to tension the two roll skins connected by the connecting member.

2. The friction roller according to claim 1, characterized in that: The wheel hub comprises a main body and a baffle connected to the main body; The baffle extends along the circumferential direction of the main body, and two baffles are arranged at intervals along the radial direction of the main body; The detachable roll skin assembly is clamped between the two baffles.

3. The friction roller according to claim 2, characterized in that: The baffle is provided with a first mounting position, and the first mounting position is provided with two first waist-shaped holes; Among the plurality of connecting members, at least one connecting member is a first connecting member, and the first connecting member includes two first hinge shafts, a first connecting shaft, two pre-pressing members and two first fixing rings; The two first hinge shafts are respectively inserted into the two first waist-shaped holes and two ends facing each other on the two adjacent roll skins, and the first hinge shafts can move in the first waist-shaped holes; The first hinge shaft is provided with a first through hole; The first connecting shaft is inserted into the first through holes on the two first hinge shafts; The two pre-pressed pieces correspond to the first fixing ring one by one and are respectively connected to two ends of the first connecting shaft, and the first fixing ring clamps the pre-pressed piece between the first fixing ring and the first hinge shaft.

4. The friction roller according to claim 3, characterized in that: The baffle plate is provided with a second mounting position; The second mounting position is provided with two second through holes; Among the plurality of connecting members, at least one connecting member is a second connecting member, and the second connecting member includes a second connecting plate, two second hinge shafts and two second fixing rings; The second connecting plate is provided with two second through holes; The two second hinge shafts are respectively penetrated through the two second through holes, the two second through holes and the two opposite ends of the two adjacent roll skins; The two second fixing rings are respectively connected to the two second hinge shafts, and lock the second connecting plate on the baffle.

5. The friction roller according to claim 4, characterized in that: The detachable roll skin assembly includes three roll skins; The connecting assembly includes one first connecting member and two second connecting members.

6. The friction roller according to claim 2, characterized in that: The friction roller further comprises a fastener, which penetrates through the baffle plate and connects the baffle plate and the roll skin.

7. The friction roller according to claim 2, characterized in that: The baffle is annular, and the inner diameter of the baffle is smaller than the outer diameter of the main body, and the outer diameter of the baffle is larger than the outer diameter of the main body; The edges of the two baffles close to the inner diameter are detachably connected to the two end surfaces of the main body in the radial direction.

8. The friction roller according to claim 1, characterized in that: The connecting member comprises two hinge shafts; The two hinge shafts are detachably connected to the two opposite ends of the two adjacent roll skins, and the roll skins can rotate around the hinge shafts; There is a gap between the two end portions facing each other on two adjacent roll skins, which allows the roll skins to rotate relative to the hinge shaft.

9. The friction roller according to claim 1, characterized in that: The connecting piece is connected to the side of the reel skin in the radial direction.

10. The friction roller according to claim 9, characterized in that: The connection assembly is provided with two groups; The plurality of connecting members in each group of the connecting assemblies are arranged at intervals along the circumferential direction of the hub; The two groups of connecting components are symmetrically arranged on both sides of the detachable roll skin component in the radial direction.

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