Suspended platform telescopic device

Abstract

This invention relates to the field of telescopic device technology, and provides a telescopic device for a suspended platform, including a fixed section, a telescopic assembly, the telescopic assembly being sleeved with the fixed section and movable relative to the fixed section; a drive bar, wound around the telescopic assembly, with both ends of the drive bar connected to the fixed section; and a drive member, disposed on the telescopic assembly and connected to the drive bar, for driving the drive bar to move, thereby causing the telescopic assembly to extend or retract relative to the fixed section. This application achieves the extension or retraction of the telescopic assembly relative to the fixed section by using a drive member that moves with the telescopic assembly to drive the drive bar. The design is ingenious; by winding the drive bar around the telescopic assembly and combining it with the drive of the drive member, the extension and retraction of multiple telescopic sections under horizontal placement is achieved. This solves the problem in related technologies where the retraction of telescopic sections requires external force, severely impacting work efficiency.

Description

Technical Field

[0001] This invention relates to the field of telescopic devices, and more particularly to a telescopic device for a suspended platform. Background Technology

[0002] As the height and diameter of wind turbine towers continue to increase and the forms of wind turbine towers become more diversified, the workload of on-site operation and maintenance of wind turbines has also increased significantly. As an important component of maintenance equipment, the horizontal telescopic device is used to move maintenance personnel to a position close to the blade to be inspected. Currently, the horizontal telescopic device adjusts the horizontal distance between the tower and the blade by adjusting the extension and retraction of multiple telescopic arms.

[0003] In related technologies, multi-section telescopic booms are typically extended by a wire rope winch, but their retraction requires external thrust. This type of horizontal telescopic device significantly impacts the efficiency of maintenance and repair work such as blade maintenance. Moreover, the winch driving the wire rope is prone to malfunctions such as rope tangling and rope compression, which seriously affects the service life of the wire rope and poses a safety hazard to maintenance personnel. Summary of the Invention

[0004] This invention provides a telescopic device for a suspended platform, which solves the problem that the horizontal telescopic device in the prior art needs external force to retract during the process, affecting the working efficiency. By winding the drive bar around the telescopic component and combining it with the drive of the drive component, the extension and retraction of multiple telescopic sections can be realized when the platform is placed horizontally.

[0005] This invention provides a telescopic device for a suspended platform, comprising:

[0006] Fixed section;

[0007] A telescopic assembly, which is sleeved with the fixed section and is movable relative to the fixed section;

[0008] A drive bar is wound around the telescopic assembly, and both ends of the drive bar are connected to the fixed section;

[0009] A driving component is disposed on the telescopic assembly. The driving component is connected to the driving bar and is used to drive the driving bar to move, so that the telescopic assembly extends or retracts relative to the fixed section.

[0010] The telescopic device for a suspended platform provided by this invention features a driving component mounted on a telescopic assembly fitted with a fixed section. A driving bar is then used to sequentially bypass the telescopic assembly and the driving component, with both ends of the driving bar positioned on the fixed section. The driving component, moving with the telescopic assembly, drives the driving bar, thereby extending or retracting the telescopic assembly relative to the fixed section. This ingenious design, through the winding of the driving bar around the telescopic assembly and the combined action of the driving component, enables the extension and retraction of multiple telescopic sections when horizontally placed. This solves the problem in related technologies where the retraction of telescopic sections requires external force, severely impacting work efficiency. Furthermore, it addresses the issues of rope tangling and compression problems that easily occur when using a wire rope winch to drive the extension of telescopic sections in related technologies.

[0011] According to one embodiment of the present invention, the telescopic assembly includes a plurality of telescopic joints, which are sequentially sleeved together, and the drive bar is sequentially wound around the plurality of telescopic joints along the telescopic direction.

[0012] According to an embodiment of the present invention, along the telescopic direction, guide portions are provided at the connecting ends of any two adjacent telescopic sections, as well as at the connecting ends of the telescopic section and the fixed section. The drive bar is sequentially wound around a plurality of the guide portions, and the guide portions are used to change the winding direction of the drive bar.

[0013] According to one embodiment of the present invention, the guide portion includes a guide wheel, and the guide wheel is disposed between two side walls of the telescopic joint, and the distance between the guide wheel and the two side walls of the telescopic joint is equal.

[0014] According to an embodiment of the present invention, a support plate is provided between the two side walls of the expansion joint, and the guide portion is provided on the support plate;

[0015] And / or, the support plate provided at the end of any one of the expansion joints is staggered from the support plate provided at the end of the adjacent expansion joint.

[0016] According to an embodiment of the present invention, in the unfolded state of the multiple telescopic sections, the driving member is disposed on one of the telescopic sections facing away from the farthest end of the fixed section, and the driving member is disposed at one end of the telescopic section facing away from the fixed section.

[0017] According to one embodiment of the present invention, the driving component includes a driving motor and a driving wheel, the driving wheel is connected to the driving shaft of the driving motor, and a limiting groove is formed on the surface of the driving wheel in the circumferential direction, the limiting groove being used to accommodate the driving bar.

[0018] According to one embodiment of the present invention, the drive wheel is adapted to switch between a first steering and a second steering, wherein in the first steering, the drive wheel pulls the drive bar connected to each of the telescopic joints so that each of the telescopic joints extends relative to the fixed joint; and in the second steering, the drive wheel pulls the drive bar directly connected to the fixed joint so that each of the telescopic joints retracts to the fixed joint.

[0019] According to one embodiment of the present invention, the driving member further includes a pressure roller, which is disposed opposite to the driving wheel, and the pressure roller is used to increase the pressure between the driving wheel and the driving bar.

[0020] According to one embodiment of the present invention, one end of the drive bar that is directly connected to the drive member is fixed to the fixed section, and is fixed to the end of the fixed section facing away from the telescopic assembly.

[0021] According to one embodiment of the present invention, a limiting member is provided at the connecting end of any two adjacent expansion joints to limit the extension and contraction between the expansion joints.

[0022] The telescopic device for a suspended platform provided by this invention features a driving component mounted on a telescopic assembly fitted with a fixed section. A driving bar is then used to sequentially bypass the telescopic assembly and the driving component, with both ends of the driving bar positioned on the fixed section. The driving component, moving with the telescopic assembly, drives the driving bar, thereby extending or retracting the telescopic assembly relative to the fixed section. This ingenious design, through the winding of the driving bar around the telescopic assembly and the combined action of the driving component, enables the extension and retraction of multiple telescopic sections when horizontally placed. This solves the problem in related technologies where the retraction of telescopic sections requires external force, severely impacting work efficiency. Furthermore, it addresses the issues of rope tangling and compression problems that easily occur when using a wire rope winch to drive the extension of telescopic sections in related technologies. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a structural schematic diagram of the suspension platform telescopic device provided by the present invention;

[0025] Figure 2 This is a structural schematic diagram of the three telescopic joints in their contracted and extended states provided by the present invention;

[0026] Figure 3This is a schematic diagram of the force analysis of the three expansion joints provided by the present invention when they switch from contraction to extension;

[0027] Figure 4 This is a schematic diagram of the force analysis of the three expansion joints switching from extension to contraction provided by the present invention;

[0028] Figure 5 This is a schematic diagram of the three expansion joints in their retracted state provided by the present invention;

[0029] Figure 6 This is a structural schematic diagram of the three telescopic joints in their extended states provided by the present invention;

[0030] Figure 7 This is a top view of the three telescopic joints in their extended states provided by the present invention.

[0031] Figure 8 This is a structural schematic diagram of the farthest expansion joint (driving component) provided by the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of the intermediate expansion joint provided by the present invention;

[0033] Figure 10 This is a schematic diagram of the structure of the driving component provided by the present invention;

[0034] Figure 11 This is a side view structural schematic diagram of the driving component provided by the present invention;

[0035] Figure 12 This is a schematic diagram of the structure of the six telescopic joints in their retracted state provided by the present invention;

[0036] Figure 13 This is a structural schematic diagram of the six telescopic joints provided by the present invention during the extension / contraction process;

[0037] Figure 14 This is a top view of the structure of the six telescopic joints in their extended state provided by the present invention;

[0038] Figure 15 This is a schematic diagram illustrating the principle of the extension and retraction of the six telescopic joints provided by the present invention.

[0039] Figure label:

[0040] 100. Fixed section;

[0041] 200. Telescopic assembly; 201. Telescopic joint; 202. Second telescopic joint; 203. Third telescopic joint; 204. Guide section; 205. Support plate; 2051. Top plate; 2052. Bottom plate; 2061. Anti-detachment limiting component; 2062. Positioning hole;

[0042] 300, drive bar;

[0043] 400, Driving component; 401, Drive motor; 402, Drive wheel; 4021, Limiting groove; 403, Pressure roller. Detailed Implementation

[0044] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0045] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0047] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] This example embodiment provides a suspended platform telescopic device, which is mainly used for extending and retracting multiple telescopic sections 201 in a horizontal or near-horizontal direction. More specifically, the suspended platform telescopic device of this example can be used in the blade maintenance of wind turbines. The maintenance equipment used includes a clamping assembly, a telescopic device, and a platform assembly fixed to the telescopic device, arranged sequentially from the tower to the blade. The platform assembly can approach the blade and retract to the tower position by the telescopic device. In this maintenance equipment, the telescopic device needs to extend and retract in a horizontal direction. However, existing telescopic devices can only extend by a drive assembly such as a winch, and retraction requires external force, making it difficult to retract horizontally arranged telescopic devices. Based on the above, this example provides a suspended platform telescopic device that can extend and retract multiple telescopic sections 201 in a horizontal direction, such as... Figure 1 As shown, the suspension platform telescopic device includes a fixed section 100, a telescopic assembly 200, a drive bar 300, and a drive component 400.

[0050] The telescopic component 200 is sleeved with the fixed section 100, and the telescopic component 200 moves relative to the fixed section 100; the drive bar 300 is wrapped around the telescopic component 200, and both ends of the drive bar 300 are connected to the fixed section 100; the drive member 400 is disposed on the telescopic component 200, and the drive member 400 is connected to the drive bar 300 to drive the drive bar 300 to move, so that the telescopic component 200 extends or retracts relative to the fixed section 100.

[0051] It is understood that, for ease of description, one of the telescopic joints 201 in the telescopic assembly 200 is used as the fixed joint 100. The telescopic assembly 200 may include at least one telescopic joint 201. If there is one telescopic joint 201, the telescopic joint 201 is sleeved with the fixed joint 100 and is slidably disposed. If there are multiple telescopic joints 201, the fixed joint 100 is sleeved with the multiple telescopic joints 201 in sequence, and any two adjacent telescopic joints 201 can slide relative to each other.

[0052] The drive component 400 is specifically disposed on one of the telescopic joints 201 in the telescopic assembly 200. To avoid affecting the nesting of multiple telescopic joints 201 during the retraction process, the drive component 400 is disposed at the end of the farthest telescopic joint 201. The main function of the drive component 400 is to provide traction force to the drive bar 300 wound around it. The drive component 400 may include a drive motor 401 and a drive wheel 402. The drive bar 300 is wound around the drive wheel 402. Driven by the drive motor 401, the drive wheel 402 drives the drive bar 300 to rotate through the friction between the drive wheel 402 and the drive bar 300, but is not limited to this.

[0053] The drive bar 300 can be a drive rope or a drive chain, which is not limited here. One end of the drive bar 300 is fixed to the fixed section 100, and the other end passes around the drive member 400 and is sequentially wound around multiple telescopic sections 201 in the telescopic assembly 200, and finally fixed to the fixed section 100. The drive member 400 can drive the drive bar 300 to move around the first direction or the second direction. If the telescopic device needs to extend, the drive member 400 needs to drive the drive bar 300 to move around the first direction (counterclockwise rotation), see [reference]. Figure 3 As shown, the drive bar 300 wrapped around the multiple telescopic joints 201 is tightened at this time, thereby causing the multiple telescopic joints 201 to unfold sequentially, realizing the extension of the telescopic device; if the telescopic device needs to retract, the drive member 400 needs to drive the drive bar 300 to move around the second direction (clockwise), see [reference]. Figure 4 As shown, at this time, the drive bar 300 directly connected to the fixed section 100 is tightened. The tightened drive bar 300 reacts its tension on the multiple telescopic sections 201, causing the multiple telescopic sections 201 to retract, thereby realizing the contraction of the telescopic device.

[0054] To further understand the extension and retraction principle of the telescopic device, this example uses three telescopic joints 201, including the fixed joint 100, for illustration. Figure 2As shown, a fixed section 100 (first telescopic section), a second telescopic section 202, and a third telescopic section 203 are sequentially sleeved and slidably arranged relative to each other. Based on the extension direction of the second telescopic section 202 and the third telescopic section 203, the fixed section 100 includes a first end and a second end, the second telescopic section 202 includes a third end and a fourth end, and the third telescopic section 203 includes a fifth end and a sixth end. A driving member 400 is disposed at the sixth end of the third telescopic section 203. One end of the driving bar 300 is fixed to the first end of the fixed section 100, and the other end passes over the second telescopic section 202 and the third telescopic section 203 from below and wraps around the driving member 400. Then it passes through the fifth end of the third telescopic section 203, changes direction and passes through the fourth end of the second telescopic section 202, changes direction again and passes through the third end of the second telescopic section 202, changes direction again and is fixed to the second end of the fixed section 100.

[0055] When switching from a contracted state to an extended state, such as Figure 3 As shown, the drive unit 400 pulls the drive bar 300 connected to each telescopic joint 201. During the driving process, the drive bar 300 wrapped around each telescopic joint 201 is gradually tightened. The drive bar 300 drives each telescopic joint 201 to move, thereby achieving the extended state.

[0056] When switching from an extended state to a contracted state, such as Figure 4 As shown, the drive member 400 pulls a section of drive bar 300 directly fixed to the fixed section 100. Since the drive bar 300 is fixed to the fixed section 100 and will not be stretched, when the drive member 400 applies a traction force to the drive bar 300, the drive bar 300 will apply a reverse pulling force to the drive member 400, thereby forcing the drive member 400 to drive the third telescopic section 203 to move towards the fixed section 100. As the third telescopic section 203 moves, the fifth end of the third telescopic section 203 will drive the drive bar 300 wrapped around it to move, and then drive the fourth end of the second telescopic section 202 adjacent to the fifth end to move through the drive bar 300. That is, it drives the second telescopic section 202 to retract as a whole until both the second telescopic section 202 and the third telescopic section 203 retract to the fixed section 100 and stop, thereby realizing the retraction of the telescopic device.

[0057] The drive bar 300 can be wound around the connecting rod at the end of each telescopic joint 201. Of course, in order to reduce the friction between the drive bar 300 and the telescopic joint 201, guide wheels can also be provided at the end of each telescopic joint 201, so that the drive bar 300 is wound around the guide wheels, but there is no specific limitation.

[0058] In this embodiment, a driving member 400 is provided on the telescopic component 200 sleeved with the fixed section 100. A driving bar 300 is then used to sequentially bypass the telescopic component 200 and the driving member 400, with both ends of the driving bar 300 positioned on the fixed section 100. The driving member 400, moving with the telescopic component 200, drives the driving bar 300, thus achieving the extension or retraction of the telescopic component 200 relative to the fixed section 100. This ingenious design, through the winding of the driving bar 300 around the telescopic component 200 and the combined driving of the driving member 400, enables the extension and retraction of multiple horizontally placed telescopic sections 201. This solves the problem in related technologies where the retraction of the telescopic section 201 requires external force, severely impacting work efficiency. Furthermore, it addresses the problems of rope tangling and compression issues that easily occur in related technologies where the extension of the telescopic section 201 is driven by a wire rope winch.

[0059] The following will refer to Figures 1 to 15 The structure of each part of the above-described suspended platform telescopic device in this example embodiment will be described in more detail.

[0060] like Figure 5 , Figure 12 As shown, in one embodiment, the telescopic assembly 200 includes a plurality of telescopic joints 201, which are sequentially connected. Along the telescopic direction, the drive bar 300 is sequentially wound around the plurality of telescopic joints 201.

[0061] It is understood that multiple telescopic joints 201 and fixed joints 100 are sequentially nested together, with each pair slidingly connected. One end of the drive bar 300 is fixed to the fixed joint 100, and the other end is wrapped around multiple telescopic joints 201. That is, the drive bar 300 connects multiple telescopic joints 201 one by one along the telescopic direction, then passes around the drive member 400 and finally returns to the fixed joint 100. This arrangement allows the multiple telescopic joints 201 and fixed joints 100 to extend and retract through the cooperation between the drive member 400 and the drive bar 300.

[0062] like Figure 5 , Figure 6 As shown, in one embodiment, along the telescopic direction, guide portions 204 are provided at the connecting ends of any two adjacent telescopic sections 201, as well as at the connecting ends of the telescopic section 201 and the fixed section 100. The drive bar 300 is sequentially wound around a plurality of guide portions 204, and the guide portions 204 are used to change the winding direction of the drive bar 300.

[0063] It is understood that, taking the aforementioned fixed section 100, second telescopic section 202, and third telescopic section 203 as examples, guide portions 204 are provided at the third and fourth ends of the second telescopic section 202 and the fifth end of the third telescopic section 203. These guide portions 204 can be guide wheels or guide brackets with smooth surfaces and guide grooves; no specific limitations are made here. Specifically, the installation can be as follows: one end of the drive bar 300 is fixed to the first end of the fixed section 100, and the other end passes over the second telescopic section 202 and the third telescopic section 203 from below, wraps around the drive member 400, then passes from above the fifth end of the drive portion of the third telescopic section 203 to below, then from above the fourth end of the drive portion of the second telescopic section 202 to below, then wraps around the top of the second telescopic section 202, then from above the third end of the drive portion of the second telescopic section 202 to below, and finally is fixed to the second end of the fixed section 100.

[0064] The principles of extension and contraction can be referred to in the above embodiments and... Figure 3 and Figure 4 The meaning is clear and will not be elaborated upon here.

[0065] like Figure 7 As shown, in one embodiment, the guide portion 204 includes a guide wheel, which is disposed between two side walls of the telescopic joint 201, and the guide wheel is equidistant from both side walls of the telescopic joint 201.

[0066] Understandably, the guide wheel design further reduces the friction between the drive bar 300 and the telescopic joint 201, thereby improving the extension and retraction efficiency of the telescopic joint 201. Positioning the guide wheel in the middle between the two side walls of the telescopic joint 201 prevents friction between the side walls, thus avoiding impact on the extension and retraction efficiency. If the guide wheel is positioned biased towards one side wall of the telescopic joint 201, the drive bar 300, during tensioning, will cause one side wall of the telescopic joint 201 to be more severely compressed than the other, increasing friction between the telescopic joints. This not only affects the extension and retraction efficiency of the telescopic joints but also easily damages them, reducing their service life.

[0067] like Figure 8 and Figure 9 As shown, in one embodiment, a support plate 205 is provided between the two side walls of the expansion joint 201, and a guide portion 204 is provided on the support plate 205; and / or, the support plate 205 provided at the end of any one expansion joint 201 is staggered from the support plate 205 provided at the end of the adjacent expansion joint 201.

[0068] It is understandable that the guide portion 204 can be a guide tube passing through the support plate 205. The inner wall of the guide tube is smooth, which can provide guidance for the drive bar 300 and reduce the friction between the drive bar 300 and the telescopic joint 201 during the tensioning and movement of the drive bar 300. Of course, the guide portion 204 can also be the guide wheel in the above embodiment. The guide wheel can also pass through the support plate 205 to provide guidance for the drive bar 300 and reduce friction.

[0069] To avoid the support plates 205 affecting the maximum contraction or extension of the telescopic joints 201, the support plates 205 on adjacent telescopic joints 201 can be staggered. For detailed explanation, the fixed joint 100, the second telescopic joint 202, and the third telescopic joint 203 will still be used as examples. Support plates 205 can also be provided at the first and second ends of the fixed joint 100. These support plates 205 are used to fix the two ends of the drive bar 300. If the support plate 205 at the first end of the fixed joint 100 is a top plate 2051, then the support plate 205 at the second end of the fixed joint 100 is a bottom plate 2052, the support plate 205 at the third end of the second telescopic joint 202 is a top plate 2051, the support plate 205 at the fourth end of the second telescopic joint 202 is a bottom plate 2052, and the support plate 205 at the fifth end of the third telescopic joint 203 is a top plate 2051.

[0070] like Figure 7 , Figure 8 As shown, in one embodiment, when the multi-section telescopic joint 201 is in the unfolded state, the driving member 400 is disposed at the telescopic joint 201 at the farthest end facing away from the fixed joint 100, and the driving member 400 is disposed at the end of the telescopic joint 201 facing away from the fixed joint 100.

[0071] It is understandable that the drive component 400 is located at the farthest telescopic joint 201, and at the end of the telescopic joint 201 that is far away from the fixed joint 100. This arrangement is intended to prevent the drive component 400 from affecting the connection between the telescopic joints 201, and to enable the drive component 400 to drive all the telescopic joints 201 to achieve the purpose of extension and retraction.

[0072] like Figure 10 and Figure 11 As shown, in one embodiment, the drive member 400 includes a drive motor 401 and a drive wheel 402. The drive wheel 402 is connected to the drive shaft of the drive motor 401. The surface of the drive wheel 402 is circumferentially constructed with a limiting groove 4021 for accommodating the drive bar 300.

[0073] Understandably, the limiting groove 4021 on the drive wheel 402 can be V-shaped or arc-shaped. When the drive bar 300 is a rope, the setting of the limiting groove 4021 can increase the contact area with the rope, thereby increasing the friction with the rope, so as to ensure the friction between the rope and the drive wheel 402 and prevent the drive wheel 402 from slipping during the traction of the rope.

[0074] In addition, the drive wheel 402 can also be configured as a drive gear, and the drive bar 300 can be configured as a chain. The drive bar 300 can be pulled by the meshing of the drive gear and the chain, and the slippage problem is avoided.

[0075] Alternatively, two drive wheels 402 can be used to further increase the contact area between the drive bar 300 and the drive wheel 402. The drive bar 300 can be wrapped around the two drive wheels 402 in an outer circular manner, or it can be wrapped around the two drive wheels 402 in a figure-eight manner. The specific wrapping method is not limited here, as long as it can be ensured that the drive bar 300 can be pulled along with the rotation of the drive wheel 402.

[0076] like Figure 3 and Figure 4 As shown, in one embodiment, the drive wheel 402 is adapted to switch between a first steering and a second steering. In the first steering, the drive wheel 402 pulls the drive bar 300 connected to each telescopic joint 201 so that each telescopic joint 201 extends relative to the fixed joint 100. In the second steering, the drive wheel 402 pulls the drive bar 300 directly connected to the fixed joint 100 so that each telescopic joint 201 retracts to the fixed joint 100.

[0077] It is understood that the first and second steering directions of the drive wheel 402 correspond to the extension and retraction processes of the telescopic joint 201, respectively. The first steering direction (counterclockwise) and the second steering direction (clockwise) of the drive wheel 402 can correspond to the forward and reverse rotation of the drive shaft of the drive motor 401. The principle of extending and retracting each telescopic joint 201 by the drive wheel 402 pulling the drive bar 300 can be understood by referring to the above embodiment, and will not be repeated here.

[0078] like Figure 10 and Figure 11 As shown, in one embodiment, the drive member 400 further includes a pressure roller 403, which is disposed opposite to the drive wheel 402. The pressure roller 403 is used to increase the pressure between the drive wheel 402 and the drive bar 300.

[0079] Understandably, when the drive bar 300 is a rope, the arc surface of the pressure roller 403 is set opposite to the arc surface of the drive wheel 402, and can compress the rope set on the arc surface of the drive wheel 402. During the traction process of the drive wheel 402 on the rope, the pressure roller 403 can increase the pressure between the rope and the drive wheel 402, thereby increasing the friction between the rope and the drive wheel 402 to avoid slippage between the rope and the drive wheel 402, so as to achieve smoother extension and retraction of each telescopic joint 201.

[0080] like Figure 1 and Figure 2 As shown, in one embodiment, the end of the drive bar 300 that is directly connected to the drive member 400 is fixed to the fixing section 100 and is fixed to the end of the fixing section 100 facing away from the telescopic assembly 200.

[0081] Understandably, the drive bar 300, via the drive member 400, can be divided into a winding section that wraps around each telescopic joint 201 and a stretching section that is directly fixed to the fixed joint 100. To ensure that the telescopic joint 201 fully retracts into the fixed joint 100, the end of the stretching section needs to be fixed to the end of the fixed joint 100 facing away from the telescopic component 200. The end of the winding section can be fixed to the end of the fixed joint 100 near the telescopic component 200 to achieve the extension and retraction of the telescopic joint 201.

[0082] In one embodiment, a limiting member is provided at the connecting end of any two adjacent expansion joints 201 to restrict the extension and contraction between each expansion joint 201.

[0083] It is understood that the limiting members provided at the end of the telescopic joint 201 include an anti-detachment limiting member 2061 during the contraction process of the telescopic joint 201, and an adjustable limiting member for adjusting the extension stroke during the extension process. The anti-detachment limiting member 2061 may be a limiting plate provided at the position of the base plate 2052 mentioned in the above embodiment but provided on the side wall of the telescopic joint 201, such as... Figure 9 As shown, the limiting plate is set in the vertical direction and protrudes from the side wall of the expansion joint 201. When each expansion joint 201 is contracting, the limiting plate abuts against each other to prevent each expansion joint 201 from contracting excessively during the contraction process.

[0084] like Figure 9As shown, the adjustable limiting component can be configured by providing multiple positioning holes 2062 on the side wall of one of the two adjacent telescopic joints 201, and a telescopic limiting rod on the side wall of the other telescopic joint 201. Based on the actual extension and retraction stroke of the multiple telescopic joints 201, one of the primary positioning holes 2062 is opened accordingly, and the remaining positioning holes 2062 are covered by, for example, a flange cover. During the extension of the multiple telescopic joints 201, the telescopic limiting rod engages with the primary positioning hole 2062 to adjust the relative position of the two adjacent telescopic joints 201. This provides the function of adjusting the stroke of the multiple telescopic joints 201, and also has an anti-detachment function during the extension of the multiple telescopic joints 201.

[0085] In one embodiment, the drive bar 300 includes at least one of a rope, a steel strip, and a chain.

[0086] Specifically, when the drive bar 300 is a rope or steel belt, the contact area between the drive bar 300 and the drive wheel 402 can be increased by setting guide grooves in the drive wheel 402, increasing the number of drive wheels 402, or changing the winding method of the rope or steel belt, thereby preventing slippage. When the drive bar 300 is a chain, the drive wheel 402 can be configured as a drive gear, which can drive the chain to move through meshing with the chain without worrying about slippage. The specific configuration of the drive bar 300 can be set according to the actual application and is not limited here. Of course, the drive bar 300 is not limited to one of the rope, steel belt, and chain mentioned above.

[0087] In practical applications, this suspended platform telescopic device typically uses six telescopic sections, including a fixed section, such as... Figure 12 The image shows the retracted state of the six expansion joints. Figure 13 This indicates the extension or contraction process of the six expansion joints. Figure 14 This indicates the extended state of the six expansion joints. Figure 15 and Figure 1 The expansion and contraction principles of the various expansion joints shown are the same, and can be understood by referring to the above embodiments, which will not be repeated here.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A telescopic device for a suspended platform, characterized in that, include: Fixed section; A telescopic assembly is sleeved with a fixed section, and the telescopic assembly is movable relative to the fixed section; the telescopic assembly includes multiple telescopic sections, which are sleeved sequentially, and guide portions are provided at the connecting ends of any two adjacent telescopic sections, as well as at the connecting ends of the telescopic sections and the fixed section. A drive bar is wound around the telescopic assembly, and both ends of the drive bar are connected to the fixed joint; along the telescopic direction, the drive bar is wound sequentially around a plurality of the telescopic joints; the drive bar is wound sequentially around a plurality of the guide portions, the guide portions being used to change the winding direction of the drive bar; A driving component is disposed on the telescopic assembly, the driving component is connected to the driving bar, and is used to drive the driving bar to move so that the telescopic assembly extends or retracts relative to the fixed section; In the deployed state of the multiple telescopic sections, the driving member is disposed on the telescopic section facing away from the farthest end of the fixed section, and the driving member is disposed at the end of the telescopic section facing away from the fixed section.

2. The telescopic device for a suspended platform according to claim 1, characterized in that, The guide portion includes a guide wheel, which is disposed between the two side walls of the expansion joint, and the guide wheel is equidistant from the two side walls of the expansion joint.

3. The telescopic device for a suspended platform according to claim 1, characterized in that, A support plate is provided between the two side walls of the expansion joint, and the guide portion is provided on the support plate; And / or, the support plate provided at the end of any one of the expansion joints is staggered from the support plate provided at the end of the adjacent expansion joint.

4. The telescopic device for a suspended platform according to claim 1, characterized in that, The driving component includes a drive motor and a drive wheel. The drive wheel is connected to the drive shaft of the drive motor. A limiting groove is formed on the surface of the drive wheel in the circumferential direction. The limiting groove is used to accommodate the drive bar.

5. The telescopic device for a suspended platform according to claim 4, characterized in that, The drive wheel is adapted to switch between a first steering and a second steering, wherein in the first steering, the drive wheel pulls the drive bar connected to each of the telescopic joints so that each of the telescopic joints extends relative to the fixed joint; and in the second steering, the drive wheel pulls the drive bar directly connected to the fixed joint so that each of the telescopic joints retracts to the fixed joint.

6. The telescopic device for a suspended platform according to claim 4, characterized in that, The driving component also includes a pressure roller, which is disposed opposite to the driving wheel and is used to increase the pressure between the driving wheel and the driving bar.

7. The telescopic device for a suspended platform according to any one of claims 1 to 6, characterized in that, The end of the drive bar that is directly connected to the drive member is fixed to the fixed section and is fixed to the end of the fixed section facing away from the telescopic assembly.

8. The telescopic device for a suspended platform according to any one of claims 1 to 6, characterized in that, Limiting elements are provided at the connecting ends of any two adjacent expansion joints to restrict the expansion and contraction between the expansion joints.

Images