Cable anti-falling device suitable for wind driven generator

Abstract

The utility model discloses a cable anti-dropping device suitable for a wind driven generator, which comprises a support, the support is fixedly arranged on a floor of an interlayer of the wind driven generator, the support is of an annular structure with a hollow middle part, and a protection wheel set capable of clamping a dropping cable is arranged on the support. According to the cable anti-falling device suitable for the wind driven generator, the cable can move in a one-way mode through the ratchet wheel and the pawl which are installed in the protection wheel set, when the cable falls, the pawl can lock the ratchet wheel in time, the cable stops falling, and the groove is formed in the support used for installing the protection wheel set, so that the cable is prevented from falling off. The protection wheel sets can be rapidly disassembled and assembled, the cable can be better fixed from multiple angles through the arrangement of the three protection wheel sets, the size is small, the weight is light, disassembly and assembly are convenient, in addition, the center of the hollow-out portion of the middle of the support coincides with the center of an opening in the floor of the interlayer of the wind driven generator in the vertical direction, contact of the cable is reduced, and the service life of the cable is prolonged. The purpose of reducing cable wear is achieved.

Description

Technical Field

[0001] The utility model relates to the field of wind power generators, in particular to a cable anti-dropping device suitable for wind power generators. Background Art

[0002] A wind turbine is a mechanical device that converts wind energy into electrical energy. A wind turbine usually consists of a head, a rotor, a tail, and blades. The wind rotor rotates under the action of wind power, converting the kinetic energy of the wind into the mechanical energy of the wind rotor shaft. The generator rotates and generates electricity under the drive of the wind rotor shaft. The wind rotor shaft of the wind turbine stores electrical energy in the energy storage device of the wind turbine through cables.

[0003] During the installation of wind turbines, cables need to be hoisted from the bottom to the top (with a height difference of tens of meters). The cable diameter is 80mm or larger and the cable weight can reach one ton. At this time, the cable transportation process must be stable and reliable. When the chain for hoisting the cable fails, the cable will fall freely, injuring equipment and personnel.

[0004] In addition, during the installation of the cables, holes need to be opened in the floor of each compartment (there are multiple compartments in the wind turbine column). If the cable is not installed stably, the cable will scratch the floor and cause damage, affecting the service life and safety of the cable. Therefore, a cable protection wheel set needs to be installed to prevent the cable from being damaged by scratching the floor. Summary of the invention

[0005] The purpose of the utility model is to construct a cable anti-dropping device suitable for wind turbines, which can make the cable move in one direction, based on the existing cable protection device of wind turbines and based on the demand for being able to tighten the cable to prevent it from falling when the cable falls off.

[0006] A cable anti-drop device suitable for a wind turbine comprises a bracket, wherein the bracket is fixedly mounted on the floor of a wind turbine interlayer, the bracket is a ring-shaped structure with a hollow middle portion, and a protective wheel set capable of clamping a dropped cable is mounted on the bracket.

[0007] Furthermore, the cable passes through the hollow middle of the bracket and is fixed by a plurality of protection wheel groups, and the protection wheel group adopts a ratchet pawl structure, so the cable can only move in one direction.

[0008] Furthermore, the bracket includes an upper mounting portion and a supporting and fixing portion, the supporting and fixing portion is fixedly connected to the upper mounting portion, the supporting and fixing portion can be fixedly connected to the floor of the wind turbine interlayer, the protective wheel assembly is installed on the upper mounting portion, and the side of the upper mounting portion is provided with an opening for allowing the cable to pass through.

[0009] Furthermore, the center of the hollowed-out middle portion of the bracket is vertically aligned with the center of the opening on the floor of the wind turbine interlayer.

[0010] Furthermore, a groove capable of quickly disassembling and assembling the protective wheel set is provided on the side surface of the upper mounting portion.

[0011] Furthermore, the protection wheel assembly includes a ratchet, a pawl, and a fixed shaft, the fixed shaft is fixedly mounted on the bracket, the pawl is rotatably mounted on the fixed shaft, the ratchet is sleeved on the outer circumference of the fixed shaft, and the pawl is connected to the ratchet through an elastic member.

[0012] Furthermore, the fixed shaft is provided with four pawl mounting grooves which are distributed in an annular shape and evenly spaced, a first elastic member mounting groove is also provided on the bottom wall of the pawl mounting groove close to the center of the circle, a second elastic member mounting groove is provided at a position on the pawl corresponding to the first elastic member mounting groove, and the elastic member is installed between the first elastic member mounting groove and the second elastic member mounting groove.

[0013] Furthermore, the inner wall of the ratchet is provided with annularly distributed latching teeth, and the latching teeth can cooperate with the pawl.

[0014] Furthermore, a contact outer layer is fixedly mounted on the outer peripheral surface of the ratchet.

[0015] Furthermore, the protection wheel set is provided with three sets which are distributed in an annular shape and are evenly spaced.

[0016] The beneficial effects of the utility model are as follows: a cable anti-slip device suitable for a wind turbine disclosed in the present application can make the cable move in one direction through a ratchet and a pawl installed in a protective wheel group, and when the cable falls, the pawl can lock the ratchet in time to stop the cable from falling, and a groove is provided on the bracket for installing the protective wheel group, so that the protective wheel group can be quickly disassembled and assembled, and the arrangement of three sets of protective wheel groups can better fix the cable from multiple angles, and the device is small in size and light in weight, so it is easy to disassemble and install. In addition, the center of the hollow middle part of the bracket coincides with the center of the opening on the floor of the wind turbine interlayer in the vertical direction, so as to reduce the contact of the cable and achieve the purpose of reducing cable wear.

[0017] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of an application of a specific example of the cable anti-drop device of the utility model;

[0020] Figure 2 yes Figure 1 A top view of

[0021] Figure 3 It is a schematic diagram of the overall structure of a specific example of the cable anti-drop device of the utility model;

[0022] Figure 4 It is a schematic diagram of a bracket in a specific example of the cable anti-drop device of the utility model;

[0023] Figure 5 yes Figure 4 A top view of

[0024] Figure 6 It is a schematic diagram of a protective wheel assembly in a specific example of the cable anti-drop device of the utility model;

[0025] Figure 7 It is a cross-sectional view of a protective wheel assembly in a specific example of the cable anti-drop device of the utility model;

[0026] In the figure: 101, cable; 102, bracket; 103, protection wheel assembly; 104, floor; 105, groove wheel shaft sleeve assembly; 110, side plate; 111, bottom plate; 112, top plate; 113, support rod; 114, support foot; 120, fixed shaft; 121, contact outer layer; 122, pawl; 123, spring; 124, ratchet; 125, groove wheel sleeve; 126, groove wheel shaft. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] A cable anti-dropping device suitable for a wind turbine generator according to the utility model is further described in conjunction with the accompanying drawings.

[0029] like Figure 1 and Figure 2 As shown, the cable anti-slip device described in this embodiment includes a bracket 102, and the bracket 102 is fixedly installed on the floor 104 of the wind turbine interlayer. An opening is provided on the floor 104 that passes through from top to bottom. The middle part of the bracket 102 is hollowed out and the center of the hollow is located on the same vertical line as the center of the opening on the floor 104. Three sets of protection wheel groups 103 are distributed in a ring shape and evenly spaced and installed on the bracket 102. The cable 101 passes through the opening on the floor 104 and the hollow in the middle of the bracket 102, and the cable 101 is limited by the protection wheel group 103.

[0030] like Figure 3 , Figure 4 and Figure 5 As shown, the bracket 102 includes an upper mounting portion and a supporting and fixing portion. The upper mounting portion is composed of a top plate 112, a bottom plate 111 and a side plate 110. The top plate 112 and the bottom plate 111 are connected by the side plates 110. The side plates 110 are provided with six pieces and are parallel to each other in pairs. Every two parallel side plates 110 form a group and are evenly spaced in a ring shape. The top plate 112 and the bottom plate 111 are both provided with openings. The distance between the openings is the distance between a group of parallel side plates 110. The openings on the top plate 112 and the bottom plate 111 correspond to each other up and down.

[0031] The supporting and fixing part is composed of a support rod 113 and a support leg 114. The three support rods 113 are distributed in a ring shape and are evenly spaced. The support rod 113 passes through the bottom plate 111 and is fixedly connected to the bottom plate 111 and the top plate 112. A support leg 114 is provided at the lower end of each support rod 113.

[0032] Each side panel 110 is provided with a groove for installing the protection wheel group 103. A group of protection wheel groups 103 are installed on each group of parallel side panels 110. A total of three groups of protection wheel groups 103 are installed. The protection wheel group 103 includes a grooved wheel sleeve assembly 105, which is connected to the groove on the side panel 110.

[0033] like Figure 6 and Figure 7 As shown, the protection wheel group 103 includes a fixed shaft 120, a ratchet 124, a pawl 122 and a contact outer layer 121. The fixed shaft 120 is provided with four pawl mounting grooves which are distributed in an annular shape and evenly spaced. A pawl 122 is rotatably mounted in each mounting groove. A first elastic member mounting groove is also provided on the bottom wall of the pawl mounting groove near the center of the circle. A second elastic member mounting groove is provided at a position corresponding to the first elastic member mounting groove on each pawl 122. Springs 123 are installed in the first elastic member mounting groove and the second elastic member mounting groove. The spring 123 is in a compressed state. The ratchet 124 is sleeved on the outer peripheral surface of the fixed shaft 120 and is cooperatively connected with the pawl 122. The contact outer layer 121 is fixedly mounted on the outer peripheral surface of the ratchet 124.

[0034] The inner circumference of the ratchet wheel 124 is provided with teeth matching with the pawl 122 .

[0035] The cable 101 is in pressure contact with the contact outer layer 121 .

[0036] The fixed shaft 120 is provided with two mounting holes passing through its vertical plane. The sheave shaft sleeve assembly 105 includes a sheave shaft 126 and a sheave sleeve 125. The sheave shaft 126 is installed on the fixed shaft 120 and passes through the mounting holes on the fixed shaft 120. A sheave sleeve 125 is fixedly installed at both ends of each sheave shaft 126, and the sheave sleeve 125 is clamped in the groove of the side plate 110.

[0037] When starting work,

[0038] (1) The cable anti-drop device is installed at a position determined by the position of the opening on the floor 104 of the wind turbine interlayer, and the device is fixed on the floor 104;

[0039] (2) The cable 101 passes through the opening of the floor 104 and the hollow part of the cable anti-dropping device from bottom to top, and the cable 101 can move from bottom to top, the contact outer layer 121 is pressed against the cable 101, and the ratchet 124 moves in a circular motion around the fixed axis 120;

[0040] (3) If the cable 101 accidentally falls during installation or daily use, the pawl 122 and the inner teeth of the ratchet 124 are locked, causing the ratchet 124 to stop rotating, and finally keeping the cable 101 stationary.

[0041] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cable anti-drop device suitable for a wind turbine, comprising a bracket, characterized in that: The bracket is fixedly installed on the floor of the wind turbine interlayer. The bracket is a ring-shaped structure with a hollow middle portion. A protective wheel group capable of clamping the fallen cables is installed on the bracket.

2. A cable anti-drop device suitable for a wind turbine according to claim 1, characterized in that: The cable passes through the hollow middle of the bracket and is fixed by a plurality of protection wheel groups, and the protection wheel groups adopt a ratchet pawl structure.

3. A cable anti-drop device suitable for a wind turbine according to claim 1, characterized in that: The bracket includes an upper mounting portion and a supporting and fixing portion, wherein the supporting and fixing portion is fixedly connected to the upper mounting portion, and the supporting and fixing portion can be fixedly connected to the floor of the wind turbine interlayer, the protective wheel assembly is installed on the upper mounting portion, and the side surface of the upper mounting portion is provided with an opening for allowing the cable to pass through.

4. A cable anti-drop device suitable for a wind turbine according to claim 1, characterized in that: The center of the hollowed-out middle portion of the bracket is vertically coincident with the center of the opening on the floor of the wind turbine interlayer.

5. A cable anti-drop device suitable for a wind turbine according to claim 3, characterized in that: A groove capable of quickly disassembling and assembling the protective wheel set is provided on the side surface of the upper mounting portion.

6. A cable anti-drop device suitable for a wind turbine according to claim 1, characterized in that: The protective wheel assembly includes a ratchet, a pawl, and a fixed shaft. The fixed shaft is fixedly mounted on the bracket, the pawl is rotatably mounted on the fixed shaft, the ratchet is sleeved on the outer circumference of the fixed shaft, and the pawl is matched with the ratchet through an elastic member.

7. A cable anti-drop device suitable for a wind turbine according to claim 6, characterized in that: The fixed shaft is provided with four pawl mounting grooves which are distributed in an annular shape and are evenly spaced. A first elastic member mounting groove is also provided on the bottom wall of the pawl mounting groove near the center of the circle. A second elastic member mounting groove is provided at a position on the pawl corresponding to the first elastic member mounting groove. The elastic member is installed between the first elastic member mounting groove and the second elastic member mounting groove.

8. A cable anti-drop device suitable for a wind turbine according to claim 6, characterized in that: The inner wall of the ratchet is provided with annularly distributed latching teeth, and the latching teeth can cooperate with the pawl.

9. A cable anti-drop device suitable for a wind turbine according to claim 6, characterized in that: A contact outer layer is fixedly mounted on the outer peripheral surface of the ratchet.

10. A cable anti-drop device suitable for a wind turbine according to claim 1, characterized in that: The protection wheel set is provided with three sets which are distributed in an annular shape and are evenly spaced.

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