Take-up and pay-off device of linkage lifting rod, linkage lifting rod and take-up and pay-off method thereof

Abstract

The invention discloses a take-up and pay-off device of a linkage lifting rod, the linkage lifting rod and a take-up and pay-off method of the linkage lifting rod. The take-up and pay-off device comprises a supporting shaft, a winding wheel, a return piece and a wire row combination. The winding wheel is rotationally arranged on the supporting shaft; the return part is connected with the supporting shaft and the winding wheel, and when the winding wheel rotates in the first direction, the return part deforms and accumulates resilience force for driving the winding wheel to rotate in the second direction; the wire row combination is provided with a head end and a tail end, and the head end and the tail end are converged and wound on the winding wheel; when the linkage lifting rod is in a rising state, the linkage lifting rod is used for synchronously drawing the head end and the tail end of the wire row combination and is in linkage with the winding wheel to rotate in the first direction for paying off. And when the linkage lifting rod is in a descending state, the winding wheel rotates along a second direction through the return piece, so that the wire row combination is wound on the winding wheel to take up the wire. The problems that in the prior art, the automation degree is low, and a long cable is needed are solved.

Description

Technical Field

[0001] This invention relates to the field of lifting mast technology, specifically to a cable retraction and deployment device for a linked lifting mast, a linked lifting mast, and a cable retraction and deployment method thereof. Background Technology

[0002] During the lifting process of the linkage lifting rod, the cable of the top equipment needs to be raised and lowered accordingly. There are three main methods for winding and unwinding the cable: manual winding and unwinding, winding and unwinding with a winding wheel, and winding and unwinding with a spring cable.

[0003] The manual cable winding and unwinding method requires manual operation and has a low degree of automation.

[0004] Take-up and untake-up methods using take-up reels are divided into two types: those with electrified slip rings and those without. Take-up reels with electrified slip rings are more expensive, and their cost increases further when transmitting radio frequency or optical signals. For example... Figure 1 As shown, the take-up reel 100 without an electric slip ring rotates when the lifting rod is working; however, in order to avoid cable tangling, the cable on the take-up reel 100 must be manually disconnected from the cable on the ground, and the connector 200 must be manually plugged and unplugged, so automatic take-up and unplugging of the cable cannot be achieved.

[0005] The spring cable 300 in the spring cable winding and unwinding method consists of one or more springs and cables bound together (e.g., Figure 2 As shown), the line is retrieved by the automatic retraction of the spring. However, as... Figure 3 As shown, during installation, the spring cable 300 must be coaxial with the lifting rod, with one end fixed to the top of the lifting rod and the other end fixed to the bottom of the spring cable frame. When the lifting rod rises, its top pulls the spring cable 300 upwards; when the lifting rod descends, the spring's own contraction force retracts the cable. When the spring cable 300 is stretched, its radial dimension D decreases. To avoid interference with the lifting rod during stretching, the diameter of the spring cable 300 is usually increased or the number of turns is increased, resulting in a longer cable being required; for example, the required cable length is generally more than twice the lifting stroke. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the purpose of this invention is to provide a cable winding and unwinding device for a linkage lifting rod, a linkage lifting rod and a cable winding and unwinding method thereof, so as to solve the problems of low automation and long cable requirements in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A cable reeling / unwinding device for a linkage lifting mast, wherein the linkage lifting mast has an ascending state and a descending state, and the cable reeling / unwinding device includes:

[0009] Support shaft;

[0010] A winding reel, rotatably mounted on the support shaft;

[0011] The return member connects the support shaft and the winding wheel. When the winding wheel rotates in a first direction, the return member deforms and accumulates a rebound force that drives the winding wheel to rotate in a second direction. The first direction and the second direction are two opposite directions.

[0012] as well as

[0013] A cable assembly having a head end and an end end, which converge and are wound around the reel;

[0014] When the linkage lifting rod is in the rising state, it is used to synchronously pull the first and last ends of the wire assembly, and to drive the winding wheel to rotate in the first direction to release the wire;

[0015] When the linkage lifting rod is in the lowering state, the winding reel rotates in the second direction via the return member, so that the wire assembly is wound around the winding reel to take in the wire.

[0016] Furthermore, the winding wheel is provided with a winding groove, and the wire assembly is folded in half and wound around the winding groove starting from the folded point.

[0017] Furthermore, the folds in the wire assembly are filled with a core tube; and / or

[0018] The folds of the wire assembly are covered by a protective layer, which is wound around the wire groove and has a V-shaped or Y-shaped cross-section.

[0019] Furthermore, the winding reel is coaxially provided with two winding grooves, and the wire assembly has a first section and a second section connected to each other. The beginning and end of the wire assembly are respectively formed at the two far ends of the first section and the second section, and the first section and the second section are wound around the two winding grooves in a one-to-one correspondence.

[0020] Furthermore, the return component is a spiral spring.

[0021] Furthermore, the take-up and undo device also includes at least one roller, which rotates and engages with the cable assembly to guide the cable assembly in taking up and undoing the cable.

[0022] Furthermore, the cable take-up and unwinding device also includes a support frame, on which the roller is rotatably mounted, and the support frame is used to connect the linkage lifting rod.

[0023] Furthermore, the support shaft is disposed on the support frame; or, the support shaft and the support frame are disposed independently of each other.

[0024] The linkage lifting boom includes:

[0025] Base;

[0026] The rod body includes multiple tubes that are connected in sequence. The multiple tubes have a bottom tube and a top tube, and at least one intermediate tube located between the bottom tube and the top tube. The bottom tube is fixed to the base, and the other tubes can be raised and lowered relative to the bottom tube.

[0027] as well as

[0028] As described above, the first end of the cable assembly is located at the top section of the pole or at the second top section of the pole, and its end is located at the base.

[0029] The support shaft is located in the middle section of the rod or in the base.

[0030] The method for retracting and extending the cable of the linkage lifting boom includes the following steps:

[0031] Based on the linkage ratio of the rod, the linkage lifting rod is divided into even-number linkage ratio linkage lifting rod A1 and odd-number linkage ratio linkage lifting rod A2.

[0032] Based on the linkage lifting rod A1, the first end of the cable assembly is fixed to the top section tube of the rod body, and the second end is fixed to the base.

[0033] Based on the linkage lifting rod A2, the first end of the cable assembly is fixed to the second top section tube of the rod body. A spring cable is used between the second top section tube and the top section tube. The spring cable is connected to the first end of the cable assembly, and its end is fixed to the base.

[0034] The rod body rises, causing the first and last ends of the wire assembly to be pulled simultaneously, thus releasing the wire assembly. At the same time, the take-up reel rotates in the first direction under the pulling force, and the return member deforms to have a rebound force.

[0035] As the rod descends, the return member recovers its deformation and, under its restoring force, causes the take-up reel to rotate in the second direction, so that the line assembly can take up the line.

[0036] Compared with the prior art, the present invention has the following advantages: the support shaft and the winding reel are connected by a return member, which allows the winding reel to rotate relative to the support shaft in a first direction under the action of external force, thereby deforming the return member and giving it a spring force. When the external force disappears, the winding reel can rotate in a second direction by relying on the spring force generated by the return member. In this process, the external force acting on the winding reel is driven by the rise of the linkage lifting rod and the cable assembly, without the need to introduce an additional power source or use a take-up reel with an electric slip ring, thus reducing costs. At the same time, the first and second ends of the cable assembly can be pulled synchronously by the linkage lifting rod, and the rise and fall of the linkage lifting rod is accompanied by the rotation of the winding reel in the first or second direction, thereby achieving the purpose of automatic cable take-up and take-up. Furthermore, the take-up and take-up of the cable assembly can follow the rise and fall of the linkage lifting rod, and the two will not only not interfere with each other, but also shorten the installation length of the cable assembly compared with spring cables. Attached Figure Description

[0037] Figure 1 A schematic diagram of the lifting rod structure of a take-up reel without an electric slip ring in the prior art;

[0038] Figure 2 This is a schematic diagram of the structure of a spring cable in the prior art;

[0039] Figure 3 A schematic diagram of a lifting rod using a spring cable in the prior art;

[0040] Figure 4 This is a schematic diagram of the structure of a take-up and undo device according to an embodiment of the present invention;

[0041] Figure 5 for Figure 4 The structural diagram after the line arrangement is omitted;

[0042] Figure 6 for Figure 5 Another structural diagram;

[0043] Figure 7 for Figure 5 Schematic diagram of the structure of the winding reel;

[0044] Figure 8 a- Figure 8 b is a schematic diagram of the structure of a line array according to an embodiment of the present invention;

[0045] Figure 9 a- Figure 9 b is a partial structural diagram of a wire assembly using a core cylinder and a V-shaped cross-section protective layer according to an embodiment of the present invention;

[0046] Figure 10 a- Figure 10b is a partial structural diagram of a line bar assembly according to an embodiment of the present invention, showing the use of a V-shaped cross-section protective layer and the absence thereof;

[0047] Figure 11 This is a schematic diagram of the structure of a take-up and undo device according to an embodiment of the present invention;

[0048] Figure 12 a- Figure 12 b is a partial structural diagram of a wire assembly using a core cylinder and a Y-shaped cross-section protective layer according to an embodiment of the present invention;

[0049] Figure 13 a- Figure 13 b is a partial structural diagram of a wiring harness assembly according to an embodiment of the present invention, showing the use of a Y-shaped cross-section protective layer and the absence thereof;

[0050] Figure 14 This is a schematic diagram of the structure of a roller according to an embodiment of the present invention;

[0051] Figure 15 This is a schematic diagram of the structure of a take-up and undo device according to an embodiment of the present invention;

[0052] Figure 16 for Figure 15 Schematic diagram of the structure of the winding reel;

[0053] Figure 17 This is a partial structural schematic diagram of a wire rack assembly according to an embodiment of the present invention;

[0054] Figure 18 This is a schematic diagram of the lifting structure of a pole according to an embodiment of the present invention;

[0055] Figure 19 This is a schematic diagram of the lifting structure of an even-numbered linkage ratio lifting rod according to an embodiment of the present invention;

[0056] Figure 20 This is a schematic diagram of the lifting structure of an even-numbered linkage ratio lifting rod according to an embodiment of the present invention;

[0057] Figure 21 This is a schematic diagram of the lifting structure of an even-numbered linkage ratio lifting rod according to an embodiment of the present invention;

[0058] Figure 22 This is a schematic diagram of the lifting structure of an odd-numbered linkage ratio lifting rod according to an embodiment of the present invention;

[0059] Figure 23 This is a schematic diagram of the lifting structure of an odd-numbered linkage ratio lifting rod according to an embodiment of the present invention.

[0060] The reference numerals in the accompanying drawings include:

[0061] 100, take-up reel; 200, connector; 300, spring cable; D, radial dimension;

[0062] 1. Support shaft; 2. Winding reel; 201. Winding groove; 3. Returning component; 4. Cable assembly; 401. Beginning end; 402. End end; 5. Core tube; 6. Protective layer; 7. Roller; 8. Support frame; 9. Base; 10. Rod body. Detailed Implementation

[0063] The present invention will be further described in detail below through specific embodiments:

[0064] In embodiments of the present invention, such as Figure 4 As shown, the cable winding and unwinding device of the linkage lifting rod includes: a support shaft 1, a winding reel 2, a return member 3, and a cable assembly 4; the winding reel 2 is rotatably mounted on the support shaft 1; the return member 3 connects the support shaft 1 and the winding reel 2, and when the winding reel 2 rotates in a first direction, the return member 3 deforms and accumulates a rebound force that drives the winding reel 2 to rotate in a second direction, the first direction and the second direction being two opposite directions; the cable assembly 4 has a head end 401 and an end end 402, which converge and are wound around the winding reel 2;

[0065] When the linkage lifting rod is in the rising state, it is used to synchronously pull the first end 401 and the last end 402 of the wire assembly 4, and to drive the winding wheel 2 to rotate in the first direction to release the wire.

[0066] When the linkage lifting rod is in the lowering state, the winding wheel 2 rotates in the second direction via the return member 3, so that the wire assembly 4 is wound around the winding wheel 2 to take in the wire.

[0067] Specifically, in this embodiment of the invention, the winding reel 2 is rotatably mounted on the support shaft 1, allowing the winding reel 2 to rotate around the axis of the support shaft 1 in a first direction and a second direction, which are two opposite directions. Thus, the winding reel 2 can rotate in both directions relative to the support shaft 1. The cable assembly 4 is wound around the winding reel 2, so that the winding and unwinding of the cable is achieved through the forward and reverse rotation of the winding reel 2.

[0068] In this embodiment of the invention, under the action of external force, the winding reel 2 can rotate in a first direction to unwind the thread. In order to achieve automatic winding, the support shaft 1 and the winding reel 2 are connected by a return member 3. The return member 3 is elastic and accumulates a rebound force that drives the winding reel 2 to rotate in a second direction when the winding reel 2 rotates in the first direction. After the external force acting on the winding reel 2 disappears, the winding reel 2 can rotate in the second direction by relying on the rebound force to complete the automatic winding.

[0069] In this embodiment of the invention, in order to achieve self-feeding, the cable assembly 4 wound around the winding reel 2 is connected to the linkage lifting rod, so that the rising of the linkage lifting rod is used as the external force, and the winding reel 2 rotates in the first direction.

[0070] Specifically, the cable assembly 4 has a head end 401 and an end end 402, which are exposed on the winding reel 2, with the remaining portion wound around the reel 2. Simultaneously, the head end 401 of the cable assembly 4 is fixed to the liftable end of the linkage lifting rod, and its end end 402 is fixed to the fixed end of the linkage lifting rod. Since the linkage lifting rod has both a rising and a falling state, when the linkage lifting rod is in the rising state, it can pull the head end 401 of the cable assembly 4, causing the head end 401 to rise with it. During this process, as the head end 401 of the cable assembly 4 is continuously pulled out, the winding reel 2 rotates in the first direction. The rotation of the winding reel 2 releases more cable assemblies 4, and with its end end 402 fixed to the fixed end of the linkage lifting rod, the head end 401 and the end end 402 of the cable assembly 4 are simultaneously pulled out, forming a cable unwinding mode. Conversely, when the linkage lifting rod is in the lowering state, since the first end 401 and the last end 402 of the cable assembly 4 are no longer pulled upward, the return force of the return member 3 causes the winding wheel 2 to rotate in the second direction to form the winding mode.

[0071] In the above-described wire feeding mode, the reel 2 and the wire assembly 4 utilize the rising of the linkage lifting rod as a power source. In the take-up mode, the return force of the return member 3 is used as the power source. This not only achieves automatic wire feeding and take-up but also eliminates the need for an additional power source (such as a winch), resulting in a simpler structure and controllable costs. Furthermore, compared to the reel feeding method, manual plugging and unplugging of connectors is unnecessary, and the purchase of additional slip rings is not required. Additionally, the wire assembly 4 is roughly strip-shaped and can be spaced apart from the linkage lifting rod, replacing the need for coaxial installation of spring cables. This not only avoids interference from the wire assembly 4 on the lifting of the linkage lifting rod but also reduces cable usage.

[0072] This embodiment utilizes the upward movement of the linkage lifting rod as the driving force, enabling the first end 401 and the last end 402 of the cable assembly 4 to be pulled simultaneously. During this process, the winding reel 2 rotates in the first direction to automatically unwind the cable, while the return member 3 has a rebound force. As the linkage lifting rod descends, this rebound force allows the winding reel 2 to rotate in the second direction to rewind the cable. On one hand, it enables automatic cable winding and unwinding, and the first end 401 and the last end 402 of the cable assembly 4 use the same power source for winding and unwinding, improving efficiency and keeping costs under control. On the other hand, it reduces cable usage and avoids interference with the lifting and lowering of the linkage lifting rod.

[0073] like Figures 4-7As shown, in one embodiment, the winding wheel 2 is provided with a winding groove 201, and the wire assembly 4 is folded in half and wound around the winding groove 201 with the folded part as the starting point.

[0074] Specifically, in order to wind the cable assembly 4 around the winding reel 2, with its first end 401 and last end 402 exposed on the reel 2, so that rotating the reel 2 can simultaneously unwind and retract the first end 401 and last end 402 of the cable assembly 4, this embodiment provides a winding groove 201 on the outer circumferential surface of the reel 2. The cable assembly 4 is folded in half, ensuring that its first end 401 and last end 402 overlap, and then, starting from the fold, the cable assembly 4 is wound layer by layer into the winding groove 201. Thus, the stacked cable assembly 4, i.e., two layers of cable, with the first end 401 of the upper layer and the last end 402 of the lower layer, can be fixed at corresponding positions on the linkage lifting rod. When the reel 2 rotates, both layers of cable can be released or retracted simultaneously.

[0075] like Figure 8 a and Figure 8 As shown in b, several cables (e.g., 4 cables) of the equipment are first braided in rows using woven materials such as canvas to form cable bundle assembly 4. To ensure the cable bending radius at the fold point of cable bundle assembly 4, as shown in Figure b... Figure 9 a and Figure 9 As shown in b, the folded portion of the wire assembly 4 is filled with a core tube 5.

[0076] like Figure 9 a and Figure 9 As shown in Figure b, to protect the folded portion of the bobbin assembly 4, its surface is covered by a protective layer 6. This protective layer 6 is a braided fabric with a V-shaped cross-section, which can wrap around the folded portion. During manufacturing, the V-shaped braided fabric, bobbin assembly 4, and core tube 5 are bonded or woven together using glue or weaving (the part within the dotted box in the figure). The V-shaped braided fabric and the braided fabric used in the bobbin assembly 4 are characterized by their thinness and tensile strength.

[0077] Of course, such as Figure 10 As shown in diagram a, to reduce volume, the cable bundle assembly 4 can also omit the core tube 5. A special cable designed by the cable manufacturer can be used to electrically connect the two layers of cable bundles with virtually no bending radius. For example... Figure 10 As shown in b, after the two layers of yarn are stacked together, they are then fixed to the V-shaped woven fabric by gluing or weaving. The fixed area is the part within the dotted box in the figure.

[0078] Since the position of the winding reel 2 is not fixed, it can be as follows: Figure 4 As shown, the reel 2 is suspended above the end 402 of the cable assembly 4; or, as... Figure 11As shown, the winding reel 2 and the end 402 of the cable assembly 4 are on the same plane. Regarding the latter's fixed position, this is done to reduce the length of cable used and to allow for the release or retraction of the entire cable assembly 4. In this embodiment, the protective layer 6 has a Y-shaped cross-section. Compared to the V-shaped protective layer 6, this Y-shaped protective layer 6 has a "small tail" that can be directly wound around the winding reel 2, serving as an extension of the folded section of the cable assembly 4, compensating for the gap between the folded section and the winding reel 2. Similarly, as... Figure 12 a and Figure 12 As shown in b, the fold of the wire assembly 4 can be fitted with a core tube 5 to ensure its bending radius, while the Y-shaped protective layer 6 covers its outer surface. Or, as... Figure 13 a and Figure 13 As shown in b, the two layers of cable are directly electrically connected and are wrapped by a Y-layer protective layer 6.

[0079] like Figure 15 , Figure 16 As shown, in one embodiment, the winding reel 2 is coaxially provided with two winding grooves 201, and the wire assembly 4 has a first section and a second section connected to each other. The first end 401 and the last end 402 of the wire assembly 4 are respectively formed at the two far ends of the first section and the second section, and the first section and the second section are wound around the two winding grooves 201 in a one-to-one correspondence.

[0080] Specifically, since the cable bundle assembly 4 wound on the reel 2 consists of inner and outer layers, during operation, when the reel 2 rotates by the same angle, the lengths of the two layers of cable bundles extending or retracting will differ slightly, with the layer closer to the axis extending or retracting slightly shorter than the outer layer. That is, when the lifting rod rises to a height of H, the length of the lower layer of cable bundle extending or retracting on the reel 2 is H / 2, while the length of the upper layer extending or retracting will be slightly greater than H / 2, resulting in a small error. Therefore, this embodiment uses two coaxial winding grooves 201 on the outer circumference of the reel 2 to divide the cable bundle assembly 4 into two equal parts: a first segment and a second segment. The first and second segments are seamlessly connected, with their distal ends being the beginning 401 and the end 402 of the cable bundle assembly 4, respectively. The first and second segments are wound around the two winding grooves 201, ensuring that their rotation speeds are consistent, thus guaranteeing that the lengths extended or retracted are consistent. Figure 15 , Figure 17 As shown, the cable bundle combination 4 is arranged side by side; the two cable bundles are connected inside the winding reel 2 and fixed to the winding reel 2, and then wound around the two winding grooves 201 respectively. Figure 16 As shown, the two winding grooves 201 can be separated by a partition.

[0081] Thus, when the winding wheel 2 rotates, the two strands of wire separated by the partition have the same winding diameter, ensuring that the first end 401 and the last end 402 can release or retract the same length of wire when the winding wheel 2 rotates. This avoids the problem of the first end 401 strand being longer than the last end 402 strand caused by the winding wheel 2 of the single-layer winding groove 201, which would result in the first end 401 strand being loose.

[0082] In this embodiment, the return component 3 is a spiral spring. Specifically, one end of the spiral spring is fixed to the winding wheel 2, and the other end is fixed to the support shaft 1. When the winding wheel 2 rotates in the first direction, it can deform the spiral spring, and under the action of the spiral spring, it can drive the winding wheel 2 to rotate in the second direction, thereby achieving the purpose of rapid winding and unwinding of the line.

[0083] In this embodiment, the take-up and undo device further includes at least one roller 7, which rotates and engages with the cable assembly 4 to guide the cable assembly 4 in taking up and undoing the cable.

[0084] Specifically, in order to guide the cable assembly 4 to take up and unload the cable along a preset path, this embodiment provides a roller 7 at the preset path. This roller 7 rotates and engages with the cable assembly 4, allowing the cable assembly 4 to freely take up and unload the cable, and also reducing friction. Additionally, as... Figures 4-6 , Figure 11 , Figures 14-15 As shown, since the first end 401 and the last end 402 of the cable assembly 4 need to be wound up and unwound in two directions, this embodiment is equipped with two rollers 7.

[0085] Furthermore, in one embodiment, the winding and unwinding device further includes a support frame 8, on which the roller 7 is rotatably mounted, and the support frame 8 is used to connect the linkage lifting rod. Specifically, in order to install the roller 7 in the appropriate position, this embodiment provides a support frame 8, on which the roller 7 is rotatably mounted, and the support frame 8 can be connected to the linkage lifting rod. Of course, the shape of the support frame 8 can also be adapted to different positions of the winding wheel 2. For example... Figures 4-6 As shown, the support frame 8 has a V-shaped structure, with two rollers 7 rotatably connected to both ends of its opening. Figure 15 As shown, the double-layer winding groove 201 uses the same V-shaped support frame 8 to support the roller 7. Figure 11 , Figure 14 As shown, the two rollers 7 are spaced apart in the vertical direction, so the support frame 8 can also be adapted to this arrangement.

[0086] Furthermore, such as Figure 5 , Figure 6 and Figure 15As shown, the support shaft 1 is disposed on the support frame 8, such that each component is suspended relative to the end 402 of the wire assembly 4. Alternatively, as... Figure 11 As shown, the support shaft 1 and the support frame 8 are set independently of each other, so that only the support frame 8 and the roller 7 are suspended relative to the end 402 of the line assembly 4.

[0087] like Figures 18-23 As shown, this embodiment also provides a linkage lifting rod, including: a base 9, a rod body 10, and a cable reeling device; the rod body 10 includes multiple sections of tubes connected in sequence, the multiple sections of tubes having a bottom section tube and a top section tube, and at least one intermediate section tube located between the bottom section tube and the top section tube, the bottom section tube being fixed to the base 9, and the remaining sections of tubes being able to lift and lower relative to the bottom section tube in linkage; the first end 401 of the cable assembly 4 is disposed on the top section tube of the rod body 10, or disposed on the second top section tube of the rod body 10, and its end end 402 is disposed on the base 9;

[0088] The support shaft 1 is located in the middle section of the rod 10 or in the base 9.

[0089] Specifically, the rod body 10 includes multiple sections of pipe arranged sequentially, including a bottom section and a top section, and at least one intermediate section located between the bottom and top sections. The bottom section is fixed to the base 9, and each section of pipe, except the bottom section, rises or falls simultaneously at the same speed. If the working stroke of each section of pipe, excluding the bottom section, is h, and the total working stroke of the linkage lifting rod is nh, then the linkage ratio is n. When n is even, it is an even-ratio linkage lifting rod; when n is odd, it is an odd-ratio linkage lifting rod. For the linkage lifting rod, if the total number of pipe sections is m (including the bottom section), then the linkage ratio n = m - 1. Figure 18 As shown, the total number of sections of the linkage lifting rod is 5, and the linkage ratio is 4, which is an even-numbered linkage lifting rod.

[0090] So, if Figures 19-20 As shown, one end of the support frame 8 is fixed to the intermediate tube section (i.e., the third tube section from the bottom in the figure), and the other end is fixed to the support shaft 1 so that the winding reel 2 is positioned at this intermediate tube section. Alternatively, as... Figure 21 As shown, the support frame 8 is still fixed on the intermediate section tube, while the winding reel 2 is located at the base 9 and can rotate relative to the base 9.

[0091] Furthermore, the first end 401 and the last end 402 of the cable assembly 4 are fixedly connected to the base 9 via different fasteners and top section tubes. Thus, when the linkage lifting rod rises, the first end 401 and the last end 402 of the cable assembly 4 can be pulled out synchronously to release the cable; conversely, when the linkage lifting rod descends, the cable assembly 4 starts from the V-shaped or Y-shaped protective layer 6 and winds itself layer by layer onto the winding reel 2.

[0092] likeFigure 19 As shown, when the even-numbered linkage ratio lift rod rises to a height of H, the middle section of the tube rises to a height of H / 2. Under the action of the winding wheel 2 with the spiral spring (which stores energy under the drive of the wire assembly 4) and the roller 7, the end 402 of the wire assembly 4 pulls the remaining wire from the winding wheel 2, with a pulling length of H / 2. At the same time, the length of the wire added between the beginning end 401 of the wire assembly 4 and the corresponding roller 7 is approximately H / 2. The sum of the two is approximately equal to H, ensuring that the winding wheel 2 releases wire when the linkage lift rod rises.

[0093] Similarly, when the lifting rod descends to a height of H in an even-number linkage ratio, the descending height of its intermediate section tube is H / 2. Under the action of the winding wheel 2 with a spiral spring (at this time, the spiral spring releases energy, causing the cable assembly 4 to wind onto the winding wheel 2) and the roller 7, the length of the cable retracted from the end 402 of the cable assembly 4 to the corresponding roller 7 is H / 2, and the length of the cable retracted by the winding wheel 2 from the beginning 401 of the cable assembly 4 to the corresponding roller 7 is approximately H / 2. The sum of the two is approximately equal to H, ensuring that the winding wheel 2 retracts the cable when the linkage lifting rod descends.

[0094] because Figure 19 The winding wheel 2 has a single-layer winding groove 201. The cable bundle 4 wound on the winding wheel 2 is divided into inner and outer layers. During operation, when the winding wheel 2 rotates by the same angle, the extension or retraction lengths of the two layers of cable bundles differ slightly. The extension or retraction length of the layer closer to the axis is slightly shorter than that of the outer layer. That is, when the linkage lifting rod is working, the extension or retraction length of the cable bundle at the lower part of the winding wheel 2 is H / 2, while the extension or retraction length of the cable bundle at the upper part is slightly greater than H / 2. Therefore, as Figure 20 As shown, the cable assembly 4 with double-layer winding grooves 201 is designed to prevent the cable assembly 4 from becoming loose or unreliable. Similarly, as... Figure 21 As shown, the support frame 8 is still located at the third pipe section from the bottom up.

[0095] like Figure 22 , Figure 23 As shown, when the number of pipe sections n is odd, the first end 401 of the cable assembly 4 is fixed on the second top pipe section, and the support frame 8 is fixed on the n / 2th pipe section from bottom to top. The cable between the second top pipe section and the top pipe section is connected by a traditional spring cable, that is, the unfurled cable is wound around the spring through a winding component (such as a spiral protective sleeve), and the cable is automatically wound and unwound by the contraction of the spring when the lifting rod is working. The cable between the bottom pipe section and the second top pipe section is automatically wound by the lifting rod with the above-mentioned even-number linkage ratio.

[0096] For even-ratio linkage lifting rods, the intermediate section tube is used as the power source; for odd-ratio linkage lifting rods, the intermediate section tube excluding the top section tube is used as the power source. This works in conjunction with the winding reel 2 equipped with a spiral spring. The double-layered cable assembly 4 on the winding reel 2 releases the same length of cable upwards and downwards under the drive of the linkage lifting rod's own tube sections. At any given time, the first end 401 of the cable assembly 4 relative to the upper roller 7 and the last end 402 of the cable assembly 4 relative to the lower roller 7 move the same distance, ensuring that the winding reel 2 can smoothly release and retract the double-layered cable assembly 4, achieving automatic cable release and retraction without requiring additional power.

[0097] This embodiment also provides a method for retracting and extending the cable of the linkage lifting rod, including the following steps:

[0098] Based on the linkage ratio of the rod 10, the linkage lifting rod is divided into even-ratio linkage lifting rod A1 and odd-ratio linkage lifting rod A2;

[0099] Based on the linkage lifting rod A1, the first end 401 of the cable assembly 4 is fixed to the top section tube of the rod body 10, and its end 402 is fixed to the base 9.

[0100] Based on the linkage lifting rod A2, the first end 401 of the cable assembly 4 is fixed to the second top section tube of the rod body 10. A spring cable is used between the second top section tube and the top section tube. The spring cable is connected to the first end 401 of the cable assembly 4, and its end 402 is fixed to the base 9.

[0101] The rod 10 is raised, causing the first end 401 and the last end 402 of the wire assembly 4 to be pulled synchronously, so that the wire assembly 4 can unload the wire. At the same time, the take-up wheel rotates in the first direction under the pulling force, and the return member 3 deforms and has a rebound force.

[0102] The rod 10 descends, and the return member 3 restores its deformation and, under the action of its rebound force, causes the take-up reel to rotate in the second direction, so that the line assembly 4 can take up the line.

[0103] Specifically, by using a linkage ratio, the first end 401 of the cable assembly 4 can be selectively fixed at the top section or the second-to-top section, while the last end 402 of the cable assembly is always fixed at the base 9. Simultaneously, the support frame 8 is fixed at the middle section to ensure that the lengths of the first end 401 and the last end 402 of the cable assembly pulled out or retracted are equal or nearly equal, thus solving the problem of the linkage lifting rod not being able to automatically reel in and out the cable. Compared to the traditional take-up reel method, this not only eliminates the need for manual plugging and unplugging of connectors but also eliminates the need to purchase additional slip rings, reducing costs. Furthermore, the power for automatic cable reeling and unloading is provided by the spiral spring within the linkage lifting rod and the reel 2, requiring no additional power. Additionally, the cable used is shorter than that used with spring cables.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A cable reeling and unwinding device for a linkage lifting rod, wherein the linkage lifting rod has an ascending state and a descending state, characterized in that, The take-up and unwinding device includes: Support shaft; A winding reel, rotatably mounted on the support shaft; The return member connects the support shaft and the winding wheel. When the winding wheel rotates in a first direction, the return member deforms and accumulates a rebound force that drives the winding wheel to rotate in a second direction. The first direction and the second direction are two opposite directions. as well as A cable assembly having a head end and an end end, which converge and are wound around the reel; When the linkage lifting rod is in the rising state, it is used to synchronously pull the first and last ends of the wire assembly, and to drive the winding wheel to rotate in the first direction to release the wire. When the linkage lifting rod is in the lowering state, the winding reel rotates in the second direction via the return member, so that the wire assembly is wound around the winding reel to take in the wire.

2. The cable reeling and unwinding device for the linkage lifting rod as described in claim 1, characterized in that, The winding reel is provided with a winding groove, and the yarn assembly is folded in half and wound around the winding groove starting from the folded point.

3. The cable reeling and unwinding device for the linkage lifting rod as described in claim 2, characterized in that, The folds of the wire assembly are filled with core tubes; and / or The folds of the wire assembly are covered by a protective layer, which is wound around the wire groove and has a V-shaped or Y-shaped cross-section.

4. The cable reeling and unwinding device for the linkage lifting rod as described in claim 1, characterized in that, The winding reel is coaxially provided with two winding grooves. The wire assembly has a first section and a second section connected to each other. The beginning and end of the wire assembly are respectively formed at the two far ends of the first section and the second section, and the first section and the second section are wound around the two winding grooves in a one-to-one correspondence.

5. The cable reeling and unwinding device for the linkage lifting rod as described in any one of claims 1-4, characterized in that, The return component is a spiral spring.

6. The cable reeling and unwinding device for the linkage lifting rod as described in any one of claims 1-4, characterized in that, The take-up and undo device further includes at least one roller, which rotates and engages with the cable assembly to guide the take-up and undo of the cable assembly.

7. The cable reeling and unwinding device for the linkage lifting rod as described in claim 6, characterized in that, The cable take-up and unwinding device further includes a support frame, on which the roller is rotatably mounted, and the support frame is used to connect the linkage lifting rod.

8. The cable reeling and unwinding device for the linkage lifting rod as described in claim 7, characterized in that, The support shaft is disposed on the support frame; or, the support shaft and the support frame are disposed independently of each other.

9. A linkage lifting rod, characterized in that, include: Base; The rod body includes multiple tubes that are connected in sequence. The multiple tubes have a bottom tube and a top tube, and at least one intermediate tube located between the bottom tube and the top tube. The bottom tube is fixed to the base, and the other tubes can be raised and lowered relative to the bottom tube. as well as The cable take-up and release device as described in any one of claims 1-8, wherein the first end of the cable assembly is disposed on the top section tube of the pole body, or on the second top section tube of the pole body, and its end is disposed on the base; The support shaft is located in the middle section of the rod or in the base.

10. The method for retracting and extending the cable of the linkage lifting rod as described in claim 9, characterized in that, Includes the following steps: The linkage lifting rods are divided into even-ratio linkage lifting rods A1 and odd-ratio linkage lifting rods A2 based on their linkage ratios. Based on linkage lifting rod A1, the first end of the wire assembly is fixed to the top section of the rod, and its end is fixed to the base. Based on linkage lifting rod A2, the first end of the wire assembly is fixed to the second top section of the rod. A spring cable is used between the second top section and the top section, connecting to the first end of the wire assembly, and its end is fixed to the base. When the rod rises, the first and last ends of the wire assembly are pulled synchronously, causing the wire assembly to unload. Simultaneously, the take-up reel rotates in a first direction due to the pulling force, causing the return member to deform and generate a rebound force. When the rod descends, the return member recovers its deformation, and under its rebound force, the take-up reel rotates in a second direction, causing the wire assembly to take in the wire.

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