Pressure detection structure and pipe cable take-up and pay-off device

Abstract

The invention relates to the technical field of mooring unmanned aerial vehicles, and provides a pressure detection structure and a pipe cable take-up and pay-off device. The pressure detection structure comprises a guide assembly and a pressure detection assembly. The guide assembly comprises a guide ring seat and a guide ring, the guide ring is connected to the guide ring seat in a floating mode in the radial direction, and a guide groove is formed in the guide ring. The pressure detection assembly is used for detecting the contact position of the pipe cable and the guide ring when the pipe cable penetrates through the guide ring and determining the deflection degree of the pipe cable relative to the vertical direction. In the initial state, the guide ring seat and the guide ring are coaxially arranged, and a radial gap is formed between the detection end of the pressure sensor and the guide ring. According to the pressure detection structure and the pipe cable take-up and pay-off device, the defects that in the prior art, when the descending speed of an unmanned aerial vehicle is too high, a pipe cable cannot be smoothly wound on a vertical take-up reel, pipe cable take-up clamping stagnation is likely to be caused, and the winding effect is poor are overcome.

Description

Technical Field

[0001] This invention relates to the field of tethered unmanned aerial vehicle (UAV) technology, and in particular to a pressure detection structure and a cable deployment / retraction device. Background Technology

[0002] A tethered drone is a drone system that connects to a ground station via a tether, using the tether to provide power, water, and data transmission, enabling it to hover stably for extended periods.

[0003] In existing technologies, some cable-tethered drones use vertical reels to wind up and unwind integrated cables. During the cable winding and unwinding process, when the drone descends too quickly, the cable cannot be smoothly wound onto the vertical reel, which can easily lead to cable winding jamming and poor winding effect. Summary of the Invention

[0004] This invention provides a pressure detection structure and a cable winding and unwinding device to solve the problem in the prior art where, when the descent speed of the UAV is too fast, the cable cannot be smoothly wound onto the vertical winding reel, which easily leads to cable winding jamming and poor winding effect.

[0005] The present invention provides a pressure detection structure, including a guide component and a pressure detection component.

[0006] The guiding assembly includes a guide ring seat and a guide ring. The guide ring is radially floatingly connected to the guide ring seat and has a guide groove. The inner diameter of the guide groove is larger than the outer diameter of the cable. The pressure detection assembly includes multiple pressure sensors. The multiple pressure sensors are circumferentially spaced between the guide ring seat and the guide ring. The fixed end of the pressure sensor is connected to the guide ring seat, and the detection end of the pressure sensor faces the guide ring. In the initial state, the guide ring seat and the guide ring are coaxially arranged, and there is a radial gap between the detection end of the pressure sensor and the guide ring.

[0007] The pressure detection structure provided by the present invention further includes: a reset assembly, the reset assembly including a plurality of reset springs, the plurality of reset springs being circumferentially spaced between the guide ring seat and the guide ring, the first end of the reset spring being connected to the guide ring seat, and the second end of the reset spring being connected to the guide ring.

[0008] According to the pressure detection structure provided by the present invention, the reset assembly further includes a plurality of threaded adjustment members corresponding one-to-one with the reset spring, the end of the threaded adjustment member abutting against the first end of the reset spring, and the threaded adjustment member being threadedly connected to the guide ring seat radially.

[0009] According to the pressure detection structure provided by the present invention, the guide ring seat is provided with a plurality of guide grooves in the radial direction that correspond one-to-one with the reset spring, and the reset spring is disposed in the corresponding guide groove.

[0010] According to the pressure detection structure provided by the present invention, the reset assembly further includes a plurality of nuts corresponding one-to-one with the threaded adjustment member, the plurality of nuts being circumferentially spaced on the outer wall of the guide ring seat, and the threaded adjustment member being radially threadedly connected to the corresponding nut.

[0011] According to the pressure detection structure provided by the present invention, the guide assembly further includes a liner, the liner being embedded in the inner wall of the guide ring seat, the liner having a receiving groove along the circumferential direction, the outer wall of the guide ring having a protruding edge along the circumferential direction, at least a portion of the protruding edge being located within the receiving groove; in the initial state, the protruding edge and the receiving groove have a radial gap.

[0012] According to the pressure detection structure provided by the present invention, in the initial state, the convex edge and the receiving groove have an axial gap.

[0013] According to the pressure detection structure provided by the present invention, the liner includes liner sections arranged adjacent to each other in the circumferential direction, and the liner sections are embedded in the inner wall of the guide ring seat.

[0014] According to the pressure detection structure provided by the present invention, the guide ring seat includes two sub-ring seats arranged opposite each other, and the two sub-ring seats are detachably connected.

[0015] Another aspect of the present invention provides a cable retraction and deployment device, comprising: a pressure detection structure as described in any of the preceding claims.

[0016] The pressure detection structure provided by this invention can determine the orientation of the cable using multiple pressure sensors circumferentially positioned between the guide ring and the guide seat. It can also analyze the pressure values ​​detected by the pressure sensors to determine the degree of cable tilt relative to the vertical direction, thus identifying whether the cable is in an excessively tilted state that is detrimental to cable retrieval. When the pressure value detected by the pressure sensors exceeds a preset range, the position of the guide ring can be adjusted by other mechanisms of the cable retrieval device to keep the cable tilt relative to the guide ring within a controllable range, thereby improving the smoothness of cable retrieval and preventing jamming during retrieval. Furthermore, pressure fluctuations from the pressure sensors can be used to determine whether the cable is in a moving state and its speed.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is one of the schematic diagrams of the pressure detection structure provided in the embodiments of the present invention.

[0020] Figure 2 This is a second schematic diagram of the pressure detection structure provided in an embodiment of the present invention.

[0021] Figure 3 This is the third schematic diagram of the pressure detection structure provided in the embodiment of the present invention.

[0022] Figure 4 This is a cross-sectional view of the pressure detection structure provided in an embodiment of the present invention.

[0023] Figure 5 yes Figure 4 A magnified view of part A in the diagram.

[0024] Figure 6 This is a schematic diagram of the cable take-up and drop device provided in an embodiment of the present invention.

[0025] Figure label: 100. Pressure detection structure; 110. Guide assembly; 111. Guide ring seat; 112. Guide ring; 1121. Protruding edge; 113. Guide groove; 114. Liner; 1141. Receiving groove; 120. Pressure detection assembly; 121. Pressure sensor; 200. Turntable; 300. Push rod; 400. Rewinding reel. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0027] In the description of the embodiments of the present invention, 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 the present invention 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 the present invention. 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.

[0028] In the description of the embodiments of the present invention, 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 the present invention according to the specific circumstances.

[0029] In embodiments of the present invention, unless otherwise explicitly 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.

[0030] 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 present invention. 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.

[0031] The following is combined with Figures 1 to 6 This invention describes the pressure detection structure and cable retraction device provided by the present invention.

[0032] See Figures 1 to 5 As shown, the pressure detection structure 100 provided in this embodiment of the invention includes: a guide assembly 110 and a pressure detection assembly 120.

[0033] The guide assembly 110 includes a guide ring seat 111 and a guide ring 112. The guide ring 112 is radially floatingly connected to the guide ring seat 111. The guide ring 112 forms a guide groove 113, the inner diameter of which is larger than the outer diameter of the cable. The pressure detection assembly 120 includes a plurality of pressure sensors 121. The plurality of pressure sensors 121 are circumferentially spaced between the guide ring seat 111 and the guide ring 112. The fixed end of the pressure sensor 121 is connected to the guide ring seat 111, and the detection end of the pressure sensor 121 faces the guide ring 112. In the initial state (i.e., when no cable passes through the guide groove 113), the guide ring seat 111 and the guide ring 112 are coaxially arranged, and a radial gap is provided between the detection end of the pressure sensor 121 and the guide ring 112.

[0034] The pressure detection structure 100 provided by this invention can determine the orientation of the cable using multiple pressure sensors 121 arranged circumferentially between the guide ring seat 111 and the guide ring 112. It can also analyze the pressure values ​​detected by the pressure sensors 121 to determine the degree of cable tilt relative to the vertical direction, thus determining whether the cable is in an excessively tilted state that is detrimental to cable retrieval. When the pressure value detected by the pressure sensors 121 exceeds a preset range, the position of the guide ring 112 can be adjusted by other mechanisms of the cable retrieval device to keep the tilt of the cable relative to the guide ring 112 within a controllable range, thereby improving the smoothness of cable retrieval and preventing jamming during cable retrieval. Furthermore, the pressure fluctuations of the pressure sensors 121 can be used to analyze and determine whether the cable is in a moving state and its speed.

[0035] Specifically, the cable is threaded through the guide groove 113 during winding and unwinding. To ensure smooth winding and unwinding under the guidance of the guide groove 113, the inner diameter of the guide groove 113 is set to be larger than the outer diameter of the cable. During winding and unwinding, the cable cannot be guaranteed to remain perfectly vertical and will exhibit a certain degree of tilt. In this case, the cable will contact either side of the guide groove 113 along the circumference and exert radial pressure on the guide ring 112. Since the guide ring 112 is radially floatingly connected to the guide ring seat 111, when subjected to this radial pressure, the detection end of at least one pressure sensor 121 on that side contacts the guide ring 112. The pressure sensor 121 detects the magnitude of the pressure value, and the degree of cable tilt can be determined based on the pressure value.

[0036] The pressure detection structure 100 provided by the present invention includes a guide component 110 and a pressure detection component 120. The guide component 110 is used to guide the cable so that the cable can be wound onto the take-up reel 400 according to a set path. The pressure detection component 120 is used to detect the tilt direction and degree of tilt of the cable during the take-up and unwinding process, and adjust the position of the receiving groove 1141 according to the current tilt direction and degree of tilt of the cable to prevent the cable from tilting too much relative to the guide groove 113, which could cause the cable to jam.

[0037] See Figures 1 to 3 As shown, the guide assembly 110 includes a guide ring seat 111 and a guide ring 112. The guide ring seat 111 supports and fixes the guide ring 112 and can be connected to the drive mechanism of the cable take-up and unwinding device. The drive mechanism drives the guide groove 113 to move according to the set take-up and unwinding path of the cable. For example, the drive guide groove 113 can make a circular motion so that the cable can be circumferentially mounted on the take-up reel 400. The guide ring 112 forms the guide groove 113 to guide the cable.

[0038] The guide ring 112 is radially floatingly connected to the guide ring seat 111, meaning that the guide ring 112 can move radially relative to the guide ring seat 111 within a set range. This allows the guide ring 112 to be driven towards one side when a cable is pressed against it, and the outer wall of the guide ring 112 to apply pressure to at least one pressure sensor 121 on that side. There are various ways in which the guide ring 112 is radially floatingly connected to the guide ring seat 111. For example, multiple elastic elements (such as springs) can be circumferentially spaced between the guide ring 112 and the guide ring seat 111, and the guide ring 112 can be radially floatingly connected to the guide ring seat 111 using these elastic elements.

[0039] See Figures 1 to 4 As shown, the pressure detection assembly 120 includes multiple pressure sensors 121, which are circumferentially spaced between the guide ring seat 111 and the guide ring 112. The fixed end of each pressure sensor 121 is connected to the guide ring seat 111 to effectively fix the pressure sensor 121 and ensure its stability during operation. Simultaneously, in the initial state, a radial gap is provided between the detection end of the pressure sensor 121 and the outer wall of the guide ring 112 (see...). Figure 5 As shown in the figure, this ensures that the detection end of the pressure sensor 121 does not contact the guide ring 112 in the initial state, thus preventing false triggering.

[0040] The number of pressure sensors 121 can be adaptively set according to the inner diameter of the guide groove 113. For example, when the inner diameter of the guide groove 113 is large, a larger number of pressure sensors 121 can be set; correspondingly, when the inner diameter of the guide groove 113 is small, a relatively smaller number of pressure sensors 121 can be set.

[0041] Preferably, in this example, the multiple pressure sensors 121 are evenly spaced circumferentially between the guide ring seat 111 and the guide ring 112, meaning that the spacing between adjacent pressure sensors 121 is the same, so as to achieve better detection effect when the cable is tilted in any direction. Of course, at least some of the pressure sensors 121 can also be set to non-uniformly distributed according to actual needs, and there is no special limitation on this.

[0042] See Figure 1 and Figure 2 As shown, as an example, in this embodiment, the number of pressure sensors 121 is 16.

[0043] According to some embodiments of the present invention, the pressure detection structure 100 further includes a reset assembly, which includes a plurality of reset springs. The plurality of reset springs are circumferentially spaced between the guide ring seat 111 and the guide ring 112. The first end of the reset spring is connected to the guide ring seat 111, and the second end of the reset spring is connected to the guide ring 112.

[0044] By setting a reset component, the guide ring 112 can be coaxially set with the guide ring seat 111 in the initial state, avoiding false triggering of the pressure sensor 121. At the same time, when the cable is retracted or extended, the reset spring can apply a radial elastic force to the guide ring 112, driving the guide ring 112 back to the initial position.

[0045] Preferably, in this example, multiple reset springs are evenly spaced circumferentially between the guide ring seat 111 and the guide ring 112 to provide a uniform reset force in all directions.

[0046] Similarly, the number of return springs can be set according to the radial dimensions of the guide ring seat 111 and / or guide ring 112. For example, when the radial dimensions of the guide ring seat 111 and / or guide ring 112 are large, a larger number of return springs can be provided to provide sufficient elastic force for the guide ring 112 to return. When the radial dimensions of the guide ring seat 111 and / or guide ring 112 are small, a smaller number of return springs can be provided to simplify the structure and reduce costs.

[0047] As an example, in this embodiment, the number of return springs is four.

[0048] According to some embodiments of the present invention, the reset assembly further includes a plurality of threaded adjustment members corresponding one-to-one with the reset spring, the ends of the threaded adjustment members abutting against the first end of the reset spring, and the threaded adjustment members being threadedly connected to the guide ring seat 111 in the radial direction.

[0049] By setting a threaded adjustment element, the compression of the return spring can be adjusted radially, so that the guide ring 112 and the guide ring seat 111 can remain coaxial in the initial state.

[0050] For example, in the initial state, when the distance between one side of the guide ring 112 and the guide ring seat 111 is large, the threaded adjusting member can be rotated inward to reduce the distance between that side and the guide ring seat 111; correspondingly, when the distance between one side of the guide ring 112 and the guide ring seat 111 is small, the threaded adjusting member can be rotated outward to increase the distance between that side and the guide ring seat 111.

[0051] According to some embodiments of the present invention, the guide ring seat 111 is provided with a plurality of guide grooves in the radial direction that correspond one-to-one with the reset springs, and the reset springs are disposed in the corresponding guide grooves.

[0052] By setting the guide groove, the reset spring can be limited and fixed, ensuring that the elastic force applied to the guide ring 112 is always axial (radial) of the reset spring, and effectively ensuring the positional stability of the reset spring during operation, preventing it from shifting.

[0053] According to some embodiments of the present invention, the reset assembly further includes a plurality of nuts corresponding one-to-one with the threaded adjustment member, the plurality of nuts being circumferentially spaced on the outer wall of the guide ring seat 111, and the threaded adjustment member being radially threadedly connected to the corresponding nut.

[0054] By setting multiple nuts, it is possible to avoid opening threaded holes on the guide ring seat 111, thereby reducing the difficulty of machining and manufacturing the guide ring seat 111.

[0055] In practice, it is preferable to directly weld multiple nuts to the designated positions on the outer wall of the guide ring seat 111, which is simple to operate and has strong stability.

[0056] See Figure 4 and Figure 5 As shown, according to some embodiments of the present invention, the guide assembly 110 further includes a liner 114, which is embedded in the inner wall of the guide ring seat 111. The liner 114 is provided with a receiving groove 1141 in the circumferential direction. The outer wall of the guide ring 112 is provided with a protruding edge 1121 in the circumferential direction. At least a portion of the protruding edge 1121 is located in the receiving groove 1141. In the initial state, the protruding edge 1121 and the receiving groove 1141 are provided with a radial gap.

[0057] By providing an inner liner 114, direct contact between the radially floating guide ring 112 and the guide ring seat 111 can be avoided, thus preventing friction and wear between the guide ring 112 and the guide ring seat 111 during operation and extending their service life.

[0058] Specifically, the lining 114 can be made of a highly wear-resistant material, such as nylon, engineering ceramics, polyamide (PA), or silicon carbide (SiC). These materials all possess high wear resistance, temperature resistance, and corrosion resistance, enabling them to maintain optimal performance over long-term use.

[0059] The protruding edge 1121 can be connected to the outer wall of the guide ring 112 by welding, or it can be integrally set with the guide ring 112, and there is no special limitation on this.

[0060] According to some embodiments of the present invention, the liner 114 includes liner sections arranged adjacent to each other in the circumferential direction, the liner sections being embedded in the inner wall of the guide ring seat 111.

[0061] By setting the inner liner 114 as a structure of multiple adjacent inner liner segments, it is easy to embed it into the inner wall of the guide ring seat 111, simplifying the operation.

[0062] Specifically, if the inner liner 114 is designed as a single ring, it is difficult to embed it into the inner wall of the guide ring seat 111 because it is made of a rigid material. When the inner liner 114 is designed as multiple adjacent inner liner segments, each inner liner segment can be embedded into the inner wall of the guide ring seat 111 in sequence, which simplifies the operation without affecting its functionality.

[0063] See Figure 5 As shown, according to some embodiments of the present invention, in the initial state, the protrusion 1121 and the receiving groove 1141 are provided with an axial gap.

[0064] By setting an axial gap between the convex edge 1121 and the receiving groove 1141 in the initial state, the guide ring 112 can move axially relative to the guide ring seat 111, thereby preventing the guide ring 112 from getting stuck.

[0065] Specifically, if there is no axial gap between the protruding edge 1121 and the receiving groove 1141 in the initial state, the guide ring 112 is prone to jamming due to insufficient precision during radial floating. When an axial gap is provided, the effect of insufficient precision can be eliminated through this gap, allowing the guide ring 112 to float smoothly in the radial direction.

[0066] See Figures 1 to 3 As shown, according to some embodiments of the present invention, the guide ring seat 111 includes two sub-ring seats disposed opposite each other, and the two sub-ring seats are detachably connected.

[0067] By setting the guide ring seat 111 as two sub-ring seats that are opposite to each other and detachably connected, the guide ring 112 can be installed easily, simplifying the operation.

[0068] Specifically, during assembly, the guide ring 112 can be placed between the two sub-ring seats first, and then the two sub-ring seats can be connected.

[0069] As an example, the two sub-ring seats in this embodiment are connected by a threaded connector.

[0070] The cable retraction device provided by the present invention will now be described. The cable retraction device described below can be referred to in correspondence with the pressure detection structure 100 described above.

[0071] See Figure 6 As shown, the cable retraction device provided in this embodiment of the invention includes: a pressure detection structure 100 as described in any of the preceding embodiments.

[0072] The cable retraction and deployment device provided by the present invention, by employing the pressure detection structure 100 described above, can determine the orientation of the cable and analyze and judge the degree of cable deviation relative to the vertical direction to determine whether the cable is in an excessively tilted state that is unfavorable to retraction and deployment. It can also analyze and judge whether the cable is in a moving state and the speed of movement by pressure fluctuation analysis of pressure sensor 121.

[0073] Specifically, the pressure detection structure 100 is radially slidably mounted on the turntable 200, and the turntable 200 is provided with a push rod 300 to push the pressure detection structure 100 to move radially. At the same time, the turntable 200 is driven by a motor to achieve circumferential rotation, so as to drive the cable to be wound onto the take-up reel 400.

[0074] 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 pressure detection structure (100), characterized in that, include: The guide assembly (110) includes a guide ring seat (111) and a guide ring (112). The guide ring (112) is radially floatingly connected to the guide ring seat (111). The guide ring (112) has a guide groove (113) formed therein, and the inner diameter of the guide groove (113) is larger than the outer diameter of the cable. Pressure detection component (120), the pressure detection component is used to detect the contact position between the cable and the guide ring (112) when the cable passes through the guide ring (112), and to determine the degree of deviation of the cable relative to the vertical direction; In the initial state, the guide ring seat (111) and the guide ring (112) are coaxially arranged, and a radial gap is provided between the detection end of the pressure sensor (121) and the guide ring (112).

2. The pressure detection structure (100) according to claim 1, characterized in that, The pressure detection assembly (120) includes a plurality of pressure sensors (121), which are circumferentially spaced between the guide ring seat (111) and the guide ring (112). The fixed end of the pressure sensor (121) is connected to the guide ring seat (111), and the detection end of the pressure sensor (121) faces the guide ring (112).

3. The pressure detection structure (100) according to claim 1, characterized in that, Also includes: A reset assembly includes multiple reset springs, which are circumferentially spaced between the guide ring seat (111) and the guide ring (112). The first end of each reset spring is connected to the guide ring seat (111), and the second end of each reset spring is connected to the guide ring (112).

4. The pressure detection structure (100) according to claim 3, characterized in that, The reset assembly also includes a plurality of threaded adjustment members corresponding one-to-one with the reset spring. The end of the threaded adjustment member abuts against the first end of the reset spring, and the threaded adjustment member is threadedly connected to the guide ring seat (111) radially.

5. The pressure detection structure (100) according to claim 4, characterized in that, The guide ring seat (111) is provided with a plurality of guide grooves (113) in the radial direction, each corresponding to a reset spring, and the reset spring is disposed in the corresponding guide groove (113).

6. The pressure detection structure (100) according to claim 4, characterized in that, The reset assembly also includes a plurality of nuts corresponding one-to-one with the threaded adjustment member. The plurality of nuts are circumferentially spaced on the outer wall of the guide ring seat (111), and the threaded adjustment member is radially threaded to the corresponding nut.

7. The pressure detection structure (100) according to claim 1, characterized in that, The guide assembly (110) further includes a liner (114) which is embedded in the inner wall of the guide ring seat (111). The liner (114) has a circumferentially provided receiving groove (1141). The outer wall of the guide ring (112) has a circumferentially provided protruding edge (1121). At least a portion of the protruding edge (1121) is located in the receiving groove (1141). In the initial state, the protruding edge (1121) and the receiving groove (1141) have a radial gap.

8. The pressure detection structure (100) according to claim 7, characterized in that, In the initial state, the protruding edge (1121) and the receiving groove (1141) have an axial gap; And / or, the liner (114) includes liner sections arranged adjacent to each other in the circumferential direction, the liner sections being embedded in the inner wall of the guide ring seat (111).

9. The pressure detection structure (100) according to claim 1, characterized in that, The guide ring seat (111) includes two sub-ring seats arranged opposite each other, and the two sub-ring seats are detachably connected.

10. A cable take-up and drop device, characterized in that, include: The pressure detection structure (100) as described in any one of claims 1 to 9.

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