High-altitude anti-falling cable tension sensor and tension detection method

Abstract

The invention discloses a high-altitude anti-falling cable tension sensor and a tension detection method. The high-altitude anti-falling cable tension sensor comprises a limiting assembly and a detection assembly. The limiting assembly comprises a first shell, a first limiting piece and a second limiting piece, and the first limiting piece and the second limiting piece are arranged in a spaced mode and fixedly connected with the first shell; the detection assembly comprises a second shell, a protruding piece and a weighing sensing module, the weighing sensing module is fixed to the second shell, and the protruding piece is fixedly connected with the weighing sensing module; wherein the first shell is fixedly connected with the second shell, and the protruding piece is located between the first limiting piece and the second limiting piece; the anti-falling cable penetrates through the receding groove and the receding part and abuts against the first limiting piece, the protruding piece and the second limiting piece, so that the anti-falling cable is bent between the first limiting piece and the second limiting piece. According to the technical scheme, real-time detection of the tension of the anti-falling cable is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-altitude fall prevention detection technology, and in particular to a high-altitude fall prevention cable tension sensor and a tension detection method. Background Art

[0002] During high-altitude operations or high-altitude hoisting, anti-fall cables are the key line of defense to prevent workers or hoisted objects from accidentally falling. However, as the anti-fall cables are exposed to the outdoors for a long time, the tension tolerance range of the cables will be affected by the use time limit and the use environment. Therefore, when people use anti-fall cables, they cannot estimate the tension range that they can withstand in real time. In the prior art, people usually use anti-fall cables with standard specifications that far meet their tensile strength requirements. However, this will inevitably cause a waste of resources for anti-fall cables, such as using steel wire ropes with greater tensile strength to hoist objects weighing less than 100 kilograms, or choosing to discard old anti-fall cables and choose new anti-fall cables within a certain period of service life. On the other hand, if the user cannot know the tension that the real-time state of the anti-fall cable can withstand, there is a possibility that the real-time tension of the anti-fall cable exceeds or is close to the standard value of the tensile strength of the cable, which leads to a higher risk of breakage or failure of the anti-fall cable. Summary of the invention

[0003] The object of the present invention is to provide a high-altitude anti-fall cable tension sensor, which aims to realize real-time detection of the tension of the anti-fall cable, thereby reducing the risk of anti-fall cable breakage and reducing the waste of anti-fall cable resources.

[0004] To achieve this object, the present invention adopts the following technical solutions: A high altitude anti-fall cable tension sensor, comprising: A limiting assembly comprises a first housing, a first limiting member and a second limiting member, wherein the first limiting member and the second limiting member are spaced apart and both are fixedly connected to the first housing; and, A detection assembly, comprising a second shell, a protruding member and a weighing sensor module, wherein the weighing sensor module is fixed to the second shell, and the protruding member is fixedly connected to the weighing sensor module; Among them, when the limiting component and the detecting component are enclosed relative to the anti-fall cable, the first shell is fixedly connected to the second shell, and the protruding piece is located between the first limiting component and the second limiting component; the first shell and the second shell are both formed with an avoidance groove and an avoidance portion for avoiding the anti-fall cable, and the anti-fall cable passes through the avoidance groove and the avoidance portion, and abuts against the first limiting component, the protruding piece and the second limiting component, so that the anti-fall cable forms a bend between the first limiting component and the second limiting component.

[0005] In one embodiment, the weighing sensor module includes a first deformable arm and a second deformable arm connected to each other, the first deformable arm is fixedly connected to the second shell, and the second deformable arm is fixedly connected to the protruding member; under the action of an external force, the protruding member can cause the second deformable arm to deform relative to the first deformable arm; Furthermore, first strain gauges are disposed on the upper and lower surfaces of the second deformable arm to detect deformation parameters of the second deformable arm.

[0006] In one embodiment, the first deformable arm and the second deformable arm are connected via a connecting portion, and the opening directions of the first deformable arm and the second deformable arm are away from the connecting portion; A second strain gauge is disposed on a surface of the first deformable arm close to the second deformable arm, and the second strain gauge is used to detect a deformation parameter of the first deformable arm.

[0007] In one embodiment, a first support member is disposed at an extending end of the first deformable arm, and a second support member is disposed at an extending end of the second deformable arm; under the action of an external force, the second support member can be accommodated in a groove of the first support member.

[0008] In one embodiment, an elastic member is disposed in the groove, and the elastic member is in abutment with the second supporting member.

[0009] In one embodiment, a fixing assembly is further included; the fixing assembly includes a screw, a screw, a first fixing member, and a second fixing member located in the avoidance groove of the first housing; The first fixing member is disposed at the avoidance portion of the second shell, the first fixing member is connected to the screw rod, the screw rod passes through the second shell and is threadedly connected to the second shell; The screwing member is located outside the second housing and is fixedly connected to the screw rod to drive the screw rod to rotate and make the first fixing member approach to or move away from the second fixing member.

[0010] In one embodiment, the first fixing member and the second fixing member are both semicircular, and a strip-shaped protrusion structure is provided on the side wall of the first fixing member close to the second fixing member, and the strip-shaped protrusion structure is used to fix the first shell and the second shell relative to the anti-fall cable.

[0011] In one embodiment, the first shell and the second shell are hinged on one side of the anti-fall cable and connected by bolts on the other side; the second shell has a receiving groove for accommodating and fixing a nut, and after the bolt passes through the first shell, the bolt is threadedly matched with the nut.

[0012] In one embodiment, the first limiting member and the second limiting member both include a first roller, and the first roller is fixedly connected to the first housing via a fixing plate; a receiving space for receiving the anti-fall cable is formed around the first roller; The protruding member includes a second roller, and the second roller is fixedly connected to the weighing sensor module via a fixing seat.

[0013] The technical solution of the present invention also proposes a method for detecting the tension of a high-altitude anti-fall cable, which adopts any one of the high-altitude anti-fall cable tension sensors described above; the tension detection method comprises the steps of: Placing the anti-fall cable between the first shell and the second shell, and making the protrusion abut against the anti-fall cable; The first shell is fixedly connected to the second shell, the anti-fall cable passes through the avoidance groove and the avoidance portion, and under the action of the protruding member, the anti-fall cable is bent between the first limiting member and the second limiting member; When the anti-fall cable is subjected to tension, the bend of the anti-fall cable can generate a force toward the protrusion and restore the anti-fall cable to be straight and perpendicular to the direction of the tension; The force acts on the weighing sensor module through the protruding member, so that the weighing sensor module obtains the real-time parameters of the tension.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The technical solution of the present invention is used to realize the real-time detection of the tension of the anti-fall cable by setting a limit component and a detection component. Specifically, when installing the high-altitude anti-fall cable tension sensor, firstly, the protrusion in the detection component is abutted against the anti-fall cable; the protrusion with the anti-fall cable is accommodated between the first limit component and the second limit component. Then the first shell is fixedly connected with the second shell so that the anti-fall cable remains bent between the first limit component and the second limit component. Furthermore, when the anti-fall cable is subjected to tension, the bending part of the anti-fall cable can convert the tension into a force perpendicular to the tension and toward the protrusion, and the weighing sensor module measures the force through the protrusion, and then converts the value of the force into the value of the tension borne by the anti-fall cable in real time through an empirical formula. Thereby, the real-time detection of the tension value of the anti-fall cable is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a high-altitude fall prevention cable tension sensor of the present invention; Figure 2 for Figure 1 Exploded diagram of Figure 3 A cross-sectional view of an embodiment of a high altitude fall prevention cable tension sensor of the present invention; Figure 4 It is a cross-sectional view of another embodiment of the high altitude fall prevention cable tension sensor of the present invention; Illustration: 100, high altitude anti-fall cable tension sensor; 110, limit assembly; 112, first housing; 112a, avoidance groove; 1121, bolt; 113, first limit member; 1131, first roller; 1132, fixed plate; 114, second limit member; 1141, first roller; 1142, fixed plate; 120, detection assembly; 122, second housing; 122a, avoidance portion; 122b, accommodation groove; 1221, shaft pin; 1222, nut; 123, protrusion; 1231, second roller; 1232, fixing seat; 124, weighing sensor module; 1241, first deformation arm; 1242, second deformation arm; 1243, first strain gauge; 1244, connecting portion; 1245, second strain gauge; 1246, first support member; 1246a, groove; 1247, second support member; 1248, elastic member; 130, fixing assembly; 131, screwing member; 132, screw rod; 133, first fixing member; 133a, strip-shaped protruding structure; 134, second fixing member; 200. Anti-fall cable. DETAILED DESCRIPTION

[0018] In order to make the technical purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0020] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0021] An embodiment of the present invention provides a high-altitude fall prevention cable tension sensor 100 .

[0022] See also Figure 1 , Figure 2 and Figure 3 , In one embodiment of the present invention, the high altitude anti-fall cable tension sensor 100 comprises a limit component 110 and a detection component 120; The limiting assembly 110 includes a first housing 112, a first limiting member 113 and a second limiting member 114, wherein the first limiting member 113 and the second limiting member 114 are spaced apart and both are fixedly connected to the first housing 112; The detection assembly 120 includes a second housing 122, a protruding member 123 and a weighing sensor module 124, wherein the weighing sensor module 124 is fixed to the second housing 122, and the protruding member 123 is fixedly connected to the weighing sensor module 124; Among them, when the limiting component 110 and the detection component 120 are enclosed relative to the anti-fall cable 200, the first shell 112 is fixedly connected to the second shell 122, and the protrusion 123 is located between the first limiting component 113 and the second limiting component 114; the first shell 112 and the second shell 122 are both formed with an avoidance groove 112a and an avoidance portion 122a for avoiding the anti-fall cable 200, and the anti-fall cable 200 passes through the avoidance groove 112a and the avoidance portion 122a, and abuts against the first limiting component 113, the protrusion 123 and the second limiting component 114, so that the anti-fall cable 200 forms a bend between the first limiting component 113 and the second limiting component 114.

[0023] It can be understood that the technical solution of the present invention is used to realize real-time detection of the tension of the anti-fall cable 200 by setting the limit assembly 110 and the detection assembly 120. Specifically, when installing the high-altitude anti-fall cable tension sensor 100, firstly, the protrusion 123 in the detection assembly 120 is abutted against the anti-fall cable 200; the protrusion 123 with the anti-fall cable 200 is accommodated between the first limit assembly 113 and the second limit assembly 114. Then, the first shell 112 and the second shell 122 are fixedly connected to keep the anti-fall cable 200 bent between the first limit assembly 113 and the second limit assembly 114. Furthermore, when the anti-fall cable 200 is subjected to tension, the bend of the anti-fall cable 200 can convert the tension into a force perpendicular to the tension and directed toward the protrusion 123, and the weighing sensor module 124 measures the force through the protrusion 123, and then converts the value of the force into the value of the tension borne by the anti-fall cable 200 in real time through an empirical formula. Thus, the tension value of the anti-fall cable 200 is detected in real time.

[0024] It needs to be explained that the above empirical formula can be used: Formula 1: T = k⋅F⋅cos(θ); Where: T is the tension of the anti-fall cable; F is the vertical force measured on the protrusion 123; θ is the angle formed by the bending, specifically the angle of the anti-fall cable 200 bending between the first limiter 113; k is a coefficient calibrated according to factors such as cable material and sensor design. Thus, the force measured by the weighing sensor module 124 is converted into actual tension.

[0025] Furthermore, the specific parameters of the k value can be obtained through experiments. The specific experimental method can be to design a fall prevention cable system with known tension, ensure that its structure and material are the same as the cables in actual applications, and thus obtain the T value. The θ value is obtained according to the specific structural parameters of the high-altitude fall prevention cable tension sensor 100. The measured value of the weighing sensor module 124 is recorded to obtain the F value. The k value is then obtained using the formula T=k⋅F⋅cos(θ).

[0026] Optionally, multiple k values ​​may be obtained by the above method, and a more reliable k value may be obtained by calculating an average value of the multiple k values.

[0027] Optionally, the value of k may be set to 1.

[0028] It should also be noted that when the anti-fall cable 200 is subjected to tension, the tension value detected in real time by the high-altitude anti-fall cable tension sensor 100 is compared with the standard value of the tensile strength of the anti-fall cable 200, thereby judging the risk of breakage of the anti-fall cable 200 during high-altitude operations. This provides a reliable basis for operators to judge whether to use the anti-fall cable 200 or whether to increase or decrease the weight of the hoisted items, thereby reducing the risk of breakage of the anti-fall cable 200 and reducing the waste of anti-fall cable 200 resources.

[0029] It is also necessary to explain that the standard value of the tensile strength of the anti-fall cable 200 is provided by the manufacturer of the anti-fall cable in the product specification. And when comparing the tension value detected in real time by the high-altitude anti-fall cable tension sensor 100 with the standard value of the tensile strength of the anti-fall cable 200, the actual cross-sectional area of ​​the anti-fall cable 200 and the safety factor value related to the standard value of the tensile strength should also be considered. Thereby ensuring the safe operation of the anti-fall cable 200.

[0030] It should also be noted that for some anti-fall cables 200 that have been in use for a long time and have resulted in unstable standard values ​​of the cable's tensile strength, the warning value of the tension value detected by the high-altitude anti-fall cable tension sensor 100 can be set to be less than or much less than the standard value of the tensile strength of the anti-fall cable 200 within a reasonable range, so as to further reduce the waste of resources of the anti-fall cable 200 and increase the service life and use cycle of the anti-fall cable 200.

[0031] It should also be noted that in some special scenarios, such as when the tension of the anti-fall cable 200 is acquired explosively or accidentally, the high-altitude anti-fall cable tension sensor 100 can also be used as a signal feedback device when the anti-fall cable 200 is broken or close to a warning value.

[0032] It should also be noted that when the high-altitude anti-fall cable tension sensor 100 is installed on the anti-fall cable 200, the high-altitude anti-fall cable tension sensor 100 and the anti-fall cable 200 are relatively fixed. Specifically, the fixing method can be that the first limiter 113, the protruding member 123 and the second limiter 114 are fixed to the anti-fall cable 200 through friction; or a clamp is set on the high-altitude anti-fall cable tension sensor 100 so that the clamp clamps the anti-fall cable 200 to achieve fixation.

[0033] For further information, see Figure 2 and Figure 3 In a specific embodiment, the weighing sensor module 124 includes two interconnected first deformable arms 1241 and second deformable arms 1242, the first deformable arm 1241 is fixedly connected to the second housing 122, and the second deformable arm 1242 is fixedly connected to the protruding member 123; under the action of external force, the protruding member 123 can cause the second deformable arms to deform relative to the first deformable arm 1241; Furthermore, first strain gauges 1243 are disposed on the upper and lower surfaces of the second deformable arm 1242 to detect deformation parameters of the second deformable arm 1242 .

[0034] It is understandable that the anti-fall cable 200 usually bears a large tension value. Therefore, setting the first deformable arm 1241 and the second deformable arm 1242 can withstand a larger force, which is beneficial to improving the reliability of the weighing sensor module 124 and reducing the risk of damage to the weighing sensor module 124, thereby reducing the maintenance cost of the high-altitude anti-fall cable tension sensor 100.

[0035] Further, the first deformable arm 1241 and the second deformable arm 1242 are connected via a connecting portion 1244, and the opening directions of the first deformable arm 1241 and the second deformable arm 1242 are away from the connecting portion 1244; A second strain gauge 1245 is disposed on a surface of the first deformable arm 1241 close to the second deformable arm 1242 . The second strain gauge 1245 is used to detect a deformation parameter of the first deformable arm 1241 .

[0036] It is understandable that by setting the first strain gauge 1243 on the upper and lower surfaces of the second deformable arm 1242, the deformation of the second deformable arm 1242 in different directions can be fully monitored, thereby improving the accuracy of the data. The second strain gauge 1245 is set on the first deformable arm 1241, so that the deformation of the first deformable arm 1241 can be better monitored, and the precision and accuracy of the overall measurement can be further improved. In addition, the setting of multiple strain gauges can provide redundant data. When some strain gauges fail or the data is abnormal, the system can be corrected through the data of the remaining strain gauges to improve the reliability of the system.

[0037] It can also be understood that the first deformable arm 1241 and the second deformable arm 1242 are connected by the connecting portion 1244, and the design in which the opening direction is away from the connecting portion 1244 can provide a more optimized mechanical structure, so that the weighing sensor module 124 can evenly distribute stress when subjected to external force, reduce local stress concentration, and thereby expand the measurement range of the weighing sensor module 124.

[0038] Please continue reading Figure 3 In a specific embodiment, a first support member 1246 is provided at the extending end of the first deformable arm 1241, and a second support member 1247 is provided at the extending end of the second deformable arm 1242; under the action of external force, the second support member 1247 can be accommodated in the groove 1246a of the first support member 1246.

[0039] It is understandable that the arrangement of the first support member 1246 and the second support member 1247 provides additional support to the weighing sensor module 124, avoiding excessive displacement of the first deformable arm 1241 and the second deformable arm 1242, and ensuring stable measurement results during repeated measurements, thereby further reducing fatigue loss of the first deformable arm 1241 and the second deformable arm 1242, extending service life, and reducing maintenance and replacement costs of the weighing sensor module 124.

[0040] Furthermore, in a specific embodiment, an elastic member 1248 is disposed in the groove 1246 a , and the elastic member 1248 is in abutment with the second supporting member 1247 .

[0041] It can be understood that the elastic member 1248 is mainly provided to provide a buffer for the mutual cooperation between the first support member 1246 and the second support member 1247, so as to reduce the damage caused by a large impact force to the first support member 1246 or the second support member 1247. The provision of the elastic member 1248 can reduce the displacement of the first deformable arm 1241 or the second deformable arm 1242 caused by external vibration or temperature change, thereby improving the stability and consistency of the weighing sensor module 124.

[0042] See also Figures 1 to 4 In a specific embodiment of the present invention, the high altitude anti-fall cable tension sensor 100 further includes a fixing assembly 130; the fixing assembly 130 includes a screw 131, a screw 132, a first fixing member 133 and a second fixing member 134 located in the avoidance groove 112a of the first housing 112; The first fixing member 133 is disposed at the avoidance portion 122a of the second housing 122, and the first fixing member 133 is connected to the screw rod 132, and the screw rod 132 passes through the second housing 122 and is threadedly connected to the second housing 122; The screwing member 131 is located outside the second housing 122 and fixedly connected to the screw rod 132 to drive the screw rod 132 to rotate and make the first fixing member 133 approach or move away from the second fixing member 134 .

[0043] It can be understood that the provision of the fixing component 130 is conducive to fixing the high-altitude anti-fall cable tension sensor 100 on the anti-fall cable 200, thereby stabilizing the use of the anti-fall cable 200 and preventing the high-altitude anti-fall cable tension sensor 100 from accidentally slipping.

[0044] Specifically, the first fixing member 133 and the second fixing member 134 are arranged around the anti-fall cable 200. By rotating the screw member 131, the first fixing member 133 can be moved closer to or away from the second fixing member 134 to achieve locking and fixing with the anti-fall cable 200.

[0045] It is understandable that the independent setting of the first fixing member 133 can provide more material options for the first fixing member 133. Optionally, the material of the first shell 112 and the second shell 122 is metal, and the material of the first fixing member 133 is a plastic material that can provide greater friction resistance and a certain elasticity. This prevents the anti-fall cable 200 from being damaged by the fixing assembly 130.

[0046] Optionally, the second fixing member 134 may be made of plastic or metal.

[0047] Optionally, to reduce design redundancy, there is only one set of fixing components 130 .

[0048] Alternatively, if Figure 2 As shown, there are two groups of the fixing components 130 , and each group of the fixing components 130 is respectively disposed at two ends of the first shell 112 and the second shell 122 .

[0049] In a further embodiment, the first fixing member 133 and the second fixing member 134 are both semi-circular, and a strip-shaped protrusion structure 133a is provided on the side wall of the first fixing member 133 close to the second fixing member 134, and the strip-shaped protrusion structure 133a is used to fix the first shell 112 and the second shell 122 relative to the anti-fall cable 200.

[0050] It can be understood that when the number of the fixing components 130 is two groups, the setting of the strip-shaped protrusion structure 133a can enhance the clamping effect of the anti-fall cable 200 while avoiding preventing the tension borne by the anti-fall cable 200 from being transmitted to the bend of the anti-fall cable 200.

[0051] See also Figure 1 , Figure 2 and Figure 4 The first shell 112 and the second shell 122 are hinged on one side of the anti-fall cable 200, and are connected on the other side by a bolt 1121; the second shell 122 has a receiving groove 122b for receiving and fixing a nut 1222, and after the bolt 1121 passes through the first shell 112, the bolt 1121 is threadedly matched with the nut 1222.

[0052] It can be understood that the hinged connection between the first shell 112 and the second shell 122 can improve the installation efficiency of the high-altitude fall prevention cable tension sensor 100.

[0053] It can also be understood that, usually, the anti-fall cable 200 is subjected to a large tension. In order to prevent the first shell 112 and the second shell 122 from cracking and deforming, the hinge between the first shell 112 and the second shell 122 is preferably provided with a metal axle pin 1221 with good rigidity and toughness.

[0054] Furthermore, using the bolts 1121 to connect the first housing 112 and the second housing 122 can improve the reliability of the connection between the first housing 112 and the second housing 122 .

[0055] Furthermore, a receiving groove 122b for receiving and fixing the nut 1222 is provided in the second housing 122, and after the bolt 1121 passes through the first housing 112, the bolt 1121 is threadedly matched with the nut 1222. The provision of the receiving groove 122b can avoid configuring threads on the second housing 122, and when the thread of the nut 1222 fails, it can also be achieved by simply replacing the nut 1222, thereby reducing maintenance costs.

[0056] It can also be understood that the provision of the receiving groove 122 b can also reduce the number of steps for fixing the nut 1222 when installing the bolt 1121 , thereby facilitating improved installation convenience.

[0057] In a specific embodiment, Figure 2 As shown, the first stopper 113 and the second stopper 114 both include a first roller 1141\1131, and the first roller 1141\1131 is fixedly connected to the first housing 112 via a fixing plate 1142\1132; a receiving space for accommodating the anti-fall cable 200 is formed around the first roller 1141\1131; The protruding member 123 includes a second roller 1231 , and the roller is fixedly connected to the weighing sensor module 124 via a fixing seat 1232 .

[0058] It can be understood that the setting of the first roller 1141\1131 and the second roller 1231 can facilitate the adjustment of the position of the high-altitude anti-fall cable tension sensor 100 on the anti-fall cable 200, reduce the wear of the cable and improve the conversion efficiency of the tension and the force.

[0059] The technical solution of the present invention also proposes a method for detecting the tension of a high-altitude anti-fall cable 200, using any one of the high-altitude anti-fall cable tension sensors 100 described above; the tension detection method comprises the steps of: S1, placing the anti-fall cable 200 between the first shell 112 and the second shell 122, and making the protrusion 123 abut against the anti-fall cable 200; S2, the first shell 112 is fixedly connected to the second shell 122, the anti-fall cable 200 passes through the avoidance groove 112a and the avoidance portion 122a, and under the action of the protruding member 123, the anti-fall cable 200 is bent between the first limiting member 113 and the second limiting member; S3, when the anti-fall cable 200 is subjected to tension, the bend of the anti-fall cable 200 can generate a force toward the protrusion 123 and restore the anti-fall cable 200 to be straight and perpendicular to the direction of the tension; S4. The force acts on the weighing sensor module 124 through the protrusion 123, so that the weighing sensor module 124 obtains the real-time parameters of the tension.

[0060] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high altitude anti-fall cable tension sensor, characterized in that: include: A limiting assembly comprises a first housing, a first limiting member and a second limiting member, wherein the first limiting member and the second limiting member are spaced apart and both are fixedly connected to the first housing; and, A detection assembly, comprising a second shell, a protruding member and a weighing sensor module, wherein the weighing sensor module is fixed to the second shell, and the protruding member is fixedly connected to the weighing sensor module; Among them, when the limiting component and the detecting component are enclosed relative to the anti-fall cable, the first shell is fixedly connected to the second shell, and the protruding piece is located between the first limiting component and the second limiting component; the first shell and the second shell are both formed with an avoidance groove and an avoidance portion for avoiding the anti-fall cable, and the anti-fall cable passes through the avoidance groove and the avoidance portion, and abuts against the first limiting component, the protruding piece and the second limiting component, so that the anti-fall cable forms a bend between the first limiting component and the second limiting component.

2. The high altitude anti-fall cable tension sensor according to claim 1, characterized in that: The weighing sensor module comprises a first deformable arm and a second deformable arm connected to each other, the first deformable arm is fixedly connected to the second shell, and the second deformable arm is fixedly connected to the protruding member; Under the action of external force, the second deformable arm can be deformed relative to the first deformable arm through the protrusion; Furthermore, first strain gauges are disposed on the upper and lower surfaces of the second deformable arm to detect deformation parameters of the second deformable arm.

3. The high altitude anti-fall cable tension sensor according to claim 2, characterized in that: The first deformable arm and the second deformable arm are connected via a connecting portion, and the opening directions of the first deformable arm and the second deformable arm are away from the connecting portion; A second strain gauge is disposed on a surface of the first deformable arm close to the second deformable arm, and the second strain gauge is used to detect a deformation parameter of the first deformable arm.

4. The high altitude anti-fall cable tension sensor according to claim 3 is characterized in that: The extending end of the first deformable arm is provided with a first support member, and the extending end of the second deformable arm is provided with a second support member; under the action of external force, the second support member can be accommodated in the groove of the first support member.

5. The high altitude anti-fall cable tension sensor according to claim 4, characterized in that: An elastic member is arranged in the groove, and the elastic member is in abutment with the second supporting member.

6. The high altitude anti-fall cable tension sensor according to claim 2, characterized in that: It also includes a fixing assembly; the fixing assembly includes a screw, a screw, a first fixing member, and a second fixing member located in the avoidance groove of the first shell; The first fixing member is disposed at the avoidance portion of the second shell, the first fixing member is connected to the screw rod, the screw rod passes through the second shell and is threadedly connected to the second shell; The screwing member is located outside the second housing and is fixedly connected to the screw rod to drive the screw rod to rotate and make the first fixing member approach to or move away from the second fixing member.

7. The high altitude anti-fall cable tension sensor according to claim 6, characterized in that: The first fixing member and the second fixing member are both in a semicircular ring shape, and a strip-shaped protrusion structure is provided on the side wall of the first fixing member close to the second fixing member, and the strip-shaped protrusion structure is used to fix the first shell and the second shell relative to the anti-fall cable.

8. The high altitude anti-fall cable tension sensor according to any one of claims 1 to 7, characterized in that: The first shell and the second shell are hinged on one side of the anti-fall cable and connected by bolts on the other side; the second shell is provided with a receiving groove for accommodating and fixing a nut, and after the bolt passes through the first shell, the bolt is threadedly matched with the nut.

9. The high altitude anti-fall cable tension sensor according to claim 8, characterized in that: The first limiting member and the second limiting member both include a first roller, and the first roller is fixedly connected to the first housing via a fixing plate; a receiving space for accommodating the anti-fall cable is formed around the first roller; The protruding member includes a second roller, and the second roller is fixedly connected to the weighing sensor module via a fixing seat.

10. A method for detecting the tension of a high altitude anti-fall cable, characterized in that: A high altitude anti-fall cable tension sensor as described in any one of claims 1 to 9 is used; the tension detection method comprises the steps of: Placing the anti-fall cable between the first shell and the second shell, and making the protrusion abut against the anti-fall cable; The first shell is fixedly connected to the second shell, the anti-fall cable passes through the avoidance groove and the avoidance portion, and under the action of the protruding member, the anti-fall cable is bent between the first limiting member and the second limiting member; When the anti-fall cable is subjected to tension, the bend of the anti-fall cable can generate a force toward the protrusion and restore the anti-fall cable to be straight and perpendicular to the direction of the tension; The force acts on the weighing sensor module through the protruding member, so that the weighing sensor module obtains the real-time parameters of the tension.

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