Adjustable clothesline rack
By using an adjustable drying rack with a lifting mounting frame and a motor-driven winding and unwinding structure, the problem of inconvenient operation at heights with traditional drying racks is solved, achieving a safe and efficient drying process for the boards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI XINLVBIAO WOOD IND CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-24
AI Technical Summary
The existing fixed design of the board drying rack structure makes it inconvenient to load and unload materials at heights, increases labor intensity, and poses safety hazards.
The adjustable drying rack is designed with a liftable mounting frame and a sliding placement frame, combined with a motor-driven winding and unwinding structure. The rack uses connecting ropes and synchronous belts to achieve flexible drying and stable fixation of the drying boards.
It reduces labor intensity, improves operational safety and drying quality, and ensures the stability and space utilization efficiency of the boards during the drying process.
Smart Images

Figure CN224551957U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drying rack technology, and more specifically, to an adjustable drying rack. Background Technology
[0002] A board drying rack is an auxiliary device used in wood processing and furniture manufacturing. It is primarily used to place and dry boards, ensuring they air dry naturally after production or painting to prevent warping, cracking, or surface contamination. Its open design facilitates air circulation, accelerates the drying process, saves space, and allows for multi-layer stacking. Typically constructed with a metal or wooden frame, it is robust and suitable for furniture factories, woodworking workshops, and other similar locations, serving as an essential tool for ensuring the flatness and quality of boards.
[0003] Most existing drying racks for boards are fixed in design, typically consisting of multiple layers of vertically stacked supports. While this structure saves space, it presents significant operational inconveniences in practice. Because the rack height is fixed, workers must lift the heavy boards to a high position for drying, increasing labor intensity and posing safety hazards. Furthermore, retrieving materials from higher positions often requires the use of ladders or other auxiliary tools, which reduces efficiency and increases the risk of damage to the boards. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the problems existing in the prior art, this utility model provides an adjustable drying rack to solve the technical problem mentioned in the background art that the fixed structure of the existing drying rack for boards is inconvenient for loading and unloading materials at heights.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] An adjustable drying rack includes a base frame and a top frame. Multiple support frames are arranged between the base frame and the top frame. Mounting frames are vertically slidably mounted between the support frames. Each mounting frame has a connecting rope at its top end, which is connected to the bottom end of the upper mounting frame. A winding / unwinding structure is connected to the top end of the connecting rope. Each mounting frame has a horizontally slidable placement frame. A slider is provided on the side of each placement frame. A sliding groove is formed on the inner side of each mounting frame, and the slider is slidably mounted in the groove. A guide strip is provided on the outer side of the slider. The sliding groove extends outward to the outer side of the mounting frame, forming a guide groove. The guide strip and the guide groove are slidably engaged.
[0009] The present invention is further configured such that a locking post is threaded at the top of the mounting frame, a locking knob is provided at the top of the locking post, and locking grooves are provided on both the guide strip and the slider. Tightening the locking knob causes the locking post to move into the locking groove, thereby realizing the locking and fixing of the placement frame when it is pulled outward on the mounting frame and when it returns to its original position, thus improving the stability of the board during drying.
[0010] The present invention is further configured such that the winding and unwinding structure includes a winding shaft, the winding shaft is mounted on the top frame through a bearing seat, the winding shaft is provided with two sets of connecting ropes on both sides, each winding shaft is provided with a winding wheel, and a rotation drive structure is provided between the two sets of winding shafts, so that the winding wheel is stably installed on the top frame through the cooperation between the winding shaft and the bearing seat.
[0011] The present invention is further configured such that the rotation drive structure includes a motor, the motor is mounted on the top frame and is connected to one of the winding shafts in a transmission manner, and a synchronous belt transmission structure is provided between the two sets of winding shafts. When the motor is started, the rotation of the winding shaft is controlled by the cooperation of the motor and the synchronous belt transmission structure, thereby controlling the rotation of the winding wheel and realizing the winding and unwinding operation of the connecting rope. Here, a conventional synchronous belt structure or an 8-shaped synchronous belt structure in a special synchronous belt transmission structure can be selected according to the winding direction of the connecting rope on the winding wheel.
[0012] The present invention is further configured such that a through hole is provided on the top frame, the connecting rope at the top passes through the through hole and is wound on the winding wheel, so as to facilitate the extension of the connecting rope to the top frame and the winding wheel for winding and unwinding operations.
[0013] The present invention is further configured such that a guide wheel is provided on the top frame, and the guide wheel is mounted on the top frame through a bearing seat and matches the position of the through hole, so that the connecting rope can slide vertically through the through hole under the action of the guide wheel, thereby improving the stability of the connecting rope when controlling the lifting and lowering of the mounting frame.
[0014] The present invention is further configured such that a lifting block is provided on the side of the mounting frame, and a lifting groove is provided on the support frame. The lifting block is slidably located in the lifting groove, and the stability of the mounting frame when it is raised and lowered on the support frame is achieved by the cooperation of the lifting block and the lifting groove.
[0015] The present invention is further provided that the top and bottom ends of the mounting frame are provided with locking rings, and the end of the connecting rope is connected and fixed to the mounting frame by the locking rings. The locking rings enable convenient connection between the connecting rope and the mounting frame.
[0016] (III) Beneficial Effects
[0017] Compared with the prior art, this utility model provides an adjustable drying rack, which has the following advantages:
[0018] 1. This utility model, through its liftable mounting frame design and sliding placement rack structure, changes the traditional operation mode of fixed drying racks. Workers no longer need to laboriously lift heavy drying racks to a high position; after loading at a lower level, the rack is smoothly lifted to the target height by a motor-driven connecting rope rewinding mechanism. The horizontal sliding design of the placement rack further optimizes the rack placement process, allowing operators to flexibly pull out the rack as needed, significantly reducing labor intensity. Simultaneously, the precise cooperation between the lifting block and the lifting groove ensures the stability of the lifting process, avoiding the safety hazards caused by climbing or lifting heavy loads in traditional operations, and significantly improving the safety factor of the operation.
[0019] 2. The innovative flexible connecting rope structure gives the drying rack intelligent space adjustment capabilities. When the racks are stacked, the connecting ropes automatically bend and fold, reducing the equipment's footprint. The cooperation of guide bars, guide grooves, sliders, and slides ensures that the rack remains horizontal during extension and retraction, while the cooperation of locking pins and locking grooves secures the rack during opening and resetting, ensuring stability when loading and unloading heavy-duty sheets. The synchronous belt drive system enables simultaneous operation of the two take-up shafts, keeping the multi-layer rack horizontal during lifting and lowering, preventing deformation or slippage of the sheets due to tilting, and significantly improving drying quality. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of an adjustable drying rack according to this utility model. Figure 1 ;
[0021] Figure 2 This is a schematic diagram of the overall structure of an adjustable drying rack according to this utility model. Figure 2 ;
[0022] Figure 3 This is a schematic diagram of the connection structure between the placement rack and the mounting rack in this utility model;
[0023] Figure 4 This is an exploded view of the connection structure between the placement rack and the mounting rack in this utility model;
[0024] Figure 5 This is a schematic diagram of the cooperation structure between the multi-layer placement rack, the mounting rack, and the connecting rope in this utility model.
[0025] In the diagram: 1. Base frame; 2. Top frame; 3. Support frame; 4. Mounting frame; 5. Connecting rope; 6. Placement frame; 7. Slider; 8. Slide groove; 9. Guide bar; 10. Guide groove; 11. Locking pin; 12. Locking knob; 13. Locking groove; 14. Rewinding shaft; 15. Rewinding wheel; 16. Motor; 17. Synchronous belt drive structure; 18. Perforation; 19. Guide wheel; 20. Lifting block; 21. Lifting groove; 22. Locking ring. Detailed Implementation
[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.
[0029] Please see Figures 1-5 An adjustable drying rack includes a base frame 1 and a top frame 2. Multiple support frames 3 are arranged between the base frame 1 and the top frame 2. Mounting frames 4 are vertically slidably installed between the multiple support frames 3. Each mounting frame 4 has a connecting rope 5 at its top, and the top of the connecting rope 5 is connected to the bottom of the upper mounting frame 4. The top of the top connecting rope 5 is connected to a winding and unwinding structure. Each mounting frame 4 has a placement frame 6 that is horizontally slidably installed outward. A slider 7 is provided on the side of the placement frame 6. A sliding groove 8 is provided on the inner side of the mounting frame 4. The slider 7 is slidably installed in the sliding groove 8. A guide strip 9 is provided on the outer side of the slider 7. The sliding groove 8 extends outward to the outer side of the mounting frame 4 and a guide groove 10 is provided. The guide strip 9 and the guide groove 10 are slidably engaged.
[0030] Please see Figures 1-5 As one embodiment of the mounting bracket 4: the top of the mounting bracket 4 is threaded with a locking post 11, and the top of the locking post 11 is provided with a locking knob 12. The guide strip 9 and the slider 7 are both provided with locking grooves 13. Tightly tightening the locking knob 12 causes the locking post 11 to move into the locking groove 13, thereby realizing the locking and fixing of the placement bracket 6 when it is pulled outward on the mounting bracket 4 and when it returns to its original position, thus improving the stability of the board during drying.
[0031] Please see Figures 1-5 As one implementation of the winding and unwinding structure: The winding and unwinding structure includes a winding shaft 14, which is mounted on the top frame 2 through a bearing seat. The winding shaft 14 is equipped with two sets of connecting ropes 5 on both sides. Each winding shaft 14 is equipped with a winding wheel 15, and a rotation drive structure is provided between the two sets of winding shafts 14. The winding wheel 15 is stably installed on the top frame 2 through the cooperation between the winding shaft 14 and the bearing seat.
[0032] Please see Figures 1-5 As one implementation of the rotation drive structure: the rotation drive structure includes a motor 16, which is mounted on the top frame 2 and is connected to one of the winding shafts 14. A synchronous belt drive structure 17 is provided between the two winding shafts 14. When the motor 16 is started, the rotation of the winding shaft 14 is controlled by the cooperation of the motor 16 and the synchronous belt drive structure 17, thereby controlling the rotation of the winding wheel 15 and realizing the winding and unwinding operation of the connecting rope 5. Here, a conventional synchronous belt or a special-shaped synchronous belt (such as a figure-eight type) can be selected for synchronous drive according to the winding direction.
[0033] In this invention, the synchronous belt drive structure achieves drive through the meshing of the teeth of the synchronous pulley and the synchronous belt. The synchronous belt drive has the characteristics of constant transmission ratio and stable transmission, and is widely used in multi-axis synchronous drive. Those skilled in the art should know this, and this invention will not elaborate further.
[0034] Please see Figures 1-5 As one embodiment of the top frame 2: the top frame 2 has a through hole 18, the top connecting rope 5 passes through the through hole 18 and is wound on the take-up wheel 15, so that the connecting rope 5 can be extended to the top frame 2 and wound up and down by the take-up wheel 15.
[0035] Please see Figures 1-5 As one implementation of the top frame 2: the top frame 2 is provided with a guide wheel 19, which is mounted on the top frame 2 through a bearing seat and matches the position of the through hole 18, so that the connecting rope 5 can slide vertically through the through hole 18 under the action of the guide wheel 19, thereby improving the stability of the connecting rope 5 when controlling the lifting and lowering of the mounting frame 4.
[0036] Please see Figures 1-5 As one embodiment of the mounting frame 4: a lifting block 20 is provided on the side of the mounting frame 4, and a lifting groove 21 is provided on the support frame 3. The lifting block 20 slides in the lifting groove 21. The stability of the mounting frame 4 when it is raised and lowered on the support frame 3 is achieved through the cooperation of the lifting block 20 and the lifting groove 21.
[0037] Please see Figures 1-5As one embodiment of the mounting bracket 4: locking rings 22 are provided at both the top and bottom of the mounting bracket 4. The end of the connecting rope 5 is connected and fixed to the mounting bracket 4 through the locking rings 22. The locking rings 22 enable convenient connection between the connecting rope 5 and the mounting bracket 4.
[0038] In summary:
[0039] When this utility model is in use, the winding wheel 15 is in the unwinding state. In this way, since the connecting rope 5 is a flexible structure, all the mounting frames 4 will carry the placement frames 6 and pile up at the bottom of the support frame 3, realizing low-level loading.
[0040] Place the boards to be dried on the top shelf 6. During the placement process, the shelf 6 can be pulled out from the mounting frame 4 as needed, which can improve the convenience of placing the boards.
[0041] During this process, the pull-out range of the placement rack 6 on the mounting frame 4 can be limited by the cooperation of the sliding groove 8 and the slider 7, so as to prevent the placement rack 6 from detaching from the mounting frame 4.
[0042] After being pulled out, the locking pin 11 can be screwed into the corresponding locking groove 13 to lock and fix the placement frame 6 on the mounting frame 4, thereby improving the stability of the plate when it is placed.
[0043] After placement is completed, release the locking pin 11, push the placement frame 6 back to its original position, and then lock it into the locking groove 13 again through the locking pin 11 to lock and fix the placement frame 6 on the mounting frame 4, thereby enhancing the placement stability of the board.
[0044] Then, start the motor 16, and control the winding of the connecting rope 5 through the cooperation of the motor 16 and the synchronous belt drive structure 17. This causes the connecting rope 5 to first carry the uppermost mounting frame 4 up one placement area. One placement area is limited to the length of a set of connecting ropes 5, so that the adjacent placement frame 6 below can be used to place the board.
[0045] After repeating the above operation to place the board, continue to control the motor 16 to run, so that the connecting rope 5 is wound up to a suitable length again, so that the second set of mounting frames 4 can carry the placement frame 6 upward.
[0046] Then repeat the above steps until all the placement racks 6 are placed. During this process, with the cooperation of the lifting groove and the lifting groove 21, the installation rack 4 can be controlled to drive the placement rack 6 to move upward stably, thereby realizing the board drying operation of loading material at a low position and drying material at a high position, improving the convenience of use.
[0047] When unloading, the lower board can be unloaded first, and then the mounting frame 4 can be controlled to lower the placement frame 6 one by one, so that the upper board can be lowered and unloaded from the lower position, which improves the inconvenience of unloading.
[0048] Since the upper and lower sets of mounting frames 4 are connected by a connecting rope 5, and the connecting rope 5 is preferably a steel wire rope with flexible deformation and high strength, the connecting rope 5 will automatically bend and fold when the upper and lower sets of mounting frames 6 are stacked, reducing the overall footprint, improving the convenience and flexibility of drying the boards, and improving work efficiency.
[0049] In all the solutions mentioned above, the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.
[0050] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their specific circuit structures will not be described in detail here.
[0051] Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies, and this utility model will not elaborate on them.
[0052] If any of the technical solutions mentioned above involve a synchronous belt drive structure, and there is no specific structure, they are all existing technologies involving the combination of synchronous belt and synchronous pulley. The connection between the synchronous belt and the shaft structure is a known technology and will not be elaborated upon in this utility model.
[0053] Of all the solutions mentioned above, those involving the connection between solar panels and batteries can be equipped with essential accessories such as inverters, battery charging controllers, cables, fuses, and brackets. Their control principles and circuit connections are all existing, well-known, and mature technologies, and their specific circuit structures will not be elaborated here.
Claims
1. An adjustable drying rack, comprising a base frame (1) and a top frame (2), characterized in that: Multiple support frames (3) are provided between the base frame (1) and the top frame (2). Mounting frames (4) are vertically slidably installed between the multiple support frames (3). Each mounting frame (4) has a connecting rope (5) at its top end. The top end of the connecting rope (5) is connected to the bottom end of the mounting frame (4) above. The top end of the connecting rope (5) at the top is connected to a winding and unwinding structure. Each mounting frame (4) has a placement frame (6) slidably installed horizontally outward. A slider (7) is provided on the side of the placement frame (6). A groove (8) is provided on the inner side of the mounting frame (4). The slider (7) is slidably installed in the groove (8). A guide strip (9) is provided on the outer side of the slider (7). The groove (8) extends outward to the outer side of the mounting frame (4) and a guide groove (10) is provided. The guide strip (9) and the guide groove (10) are slidably engaged.
2. The adjustable drying rack according to claim 1, characterized in that: The mounting bracket (4) has a locking pin (11) threaded on its top end, and a locking knob (12) is provided on the top end of the locking pin (11). The guide bar (9) and the slider (7) are both provided with locking grooves (13).
3. An adjustable drying rack according to claim 1, characterized in that: The winding and unwinding structure includes a winding shaft (14), which is mounted on the top frame (2) via a bearing seat. The winding shaft (14) is provided with two sets of connecting ropes (5) on both sides. Each winding shaft (14) is provided with a winding wheel (15), and a rotation drive structure is provided between the two sets of winding shafts (14).
4. An adjustable drying rack according to claim 3, characterized in that: The rotation drive structure includes a motor (16), which is mounted on the top frame (2) and is connected to one of the winding shafts (14). A synchronous belt drive structure (17) is provided between the two sets of winding shafts (14).
5. An adjustable drying rack according to claim 4, characterized in that: The top frame (2) has a through hole (18), through which the connecting rope (5) passes and is wound on the take-up reel (15).
6. An adjustable drying rack according to claim 5, characterized in that: The top frame (2) is provided with a guide wheel (19), which is mounted on the top frame (2) through a bearing seat and matches the position of the through hole (18), so that the connecting rope (5) can slide vertically through the through hole (18) under the action of the guide wheel (19).
7. An adjustable drying rack according to claim 1, characterized in that: The mounting bracket (4) is provided with a lifting block (20) on its side, and the support frame (3) is provided with a lifting groove (21) in cooperation with it. The lifting block (20) slides in the lifting groove (21).
8. An adjustable drying rack according to claim 1, characterized in that: The top and bottom of the mounting bracket (4) are provided with locking rings (22), and the end of the connecting rope (5) is connected and fixed to the mounting bracket (4) by the locking rings (22).