Rotary steel wire rope unwinding device

Abstract

The utility model provides a rotary steel wire rope unwinding device which comprises a bottom frame, a supporting frame body connected to the bottom frame in a pivoted mode, a guide moving assembly arranged on the supporting frame body and a brake assembly arranged on the guide moving assembly. A horizontal supporting frame and a positioning frame connected to the horizontal supporting frame are arranged on the supporting frame body, the coiled steel wire barrel is arranged on the positioning frame in a sleeving mode, and the horizontal supporting frame is used for supporting a steel wire rope. A sliding rod extending in the height direction of the positioning frame is arranged on the horizontal supporting frame, the guiding assembly is slidably connected to the sliding rod, and a first driving part for driving the guiding assembly to slide is arranged on the horizontal supporting frame. According to the utility model, the phenomenon of rope biting caused by disordered arrangement of the ropes in the releasing process due to the weight of a bearing object is avoided. Meanwhile, as the brake assembly is arranged on the guide assembly, braking force can be applied to the lower portion of the rope at any time, the conveying speed of the rope is reduced or conveying of the rope is stopped, the defect that in the prior art, the tensioning force is too high or too low is overcome, and safety is guaranteed when the steel wire rope is put down.

Description

Technical Field

[0001] This utility model relates to the field of rope coiling equipment technology, and in particular to a rotary wire rope release device. Background Technology

[0002] In engineering construction, lowering wire ropes into shafts is a common technique used to transport goods or personnel deep underground. Wire ropes are used to hoist materials such as ore and coal in mines, as well as transport personnel and equipment. Currently, most technologies use winches to deploy and retrieve the wire ropes. However, winches can generate significant impact forces when starting, causing damage to the equipment itself and the surrounding environment. The impact force of the winch affects the tension of the wire rope; if the tension is too high, it can easily cause derailment, while if the tension is too low, the wire rope may slip within the rope lining.

[0003] In addition, the wire rope is prone to "rope biting" on the drum. Due to the limitations of the underground roadway, the distance between the winch drum and the sheave is too small. When the wire rope is wound around the two sides of the drum, it causes the wire rope to bite on the drum, resulting in the wire rope being arranged in a disordered manner. Utility Model Content

[0004] In view of this, the present invention aims to provide a rotary wire rope unloader that eliminates the need for a winch to transport the wire rope, ensures that the wire rope remains neatly arranged during unloading and reloading, and avoids safety issues caused by changes in impact force.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A rotary wire rope unloader includes a base frame, a support frame pivotally connected to the base frame, a guide assembly disposed on the support frame, and a braking assembly disposed on the guide assembly.

[0007] The support frame is provided with a flat support frame and a positioning frame connected to the flat support frame. A coiled steel wire spool is sleeved on the positioning frame. The flat support frame is used to support the steel wire rope.

[0008] The flat support frame is provided with a sliding rod extending along the height direction of the positioning frame. The guiding component is slidably connected to the sliding rod. The flat support frame is provided with a first driving part that drives the guiding component to slide.

[0009] Furthermore, the base frame includes a central shaft, a plurality of first support rods arranged in a circular array on the central shaft, the first support rods being inclined to the central shaft, and the other end of the first support rods being connected to a support leg;

[0010] The support frame also includes a sleeve fitted on the central shaft, and a bearing is provided between the sleeve and the central shaft;

[0011] The flat support frame is connected to the shaft cylinder.

[0012] Furthermore, the flat support frame includes several second support rods evenly distributed around the circumference of the shaft cylinder;

[0013] An adjusting plate is detachably connected to the second support rod, and the support rod is provided with a sliding groove arranged along its length.

[0014] The adjusting plate slides along the support rod in the adjusted state, and the plurality of adjusting plates form a limiting area that restricts the wire drum.

[0015] Furthermore, the positioning frame includes a fixed rod disposed above the shaft cylinder, a plurality of limiting rods evenly distributed around the fixed rod, and a telescopic assembly connecting the limiting rod and the fixed rod;

[0016] The inner hole of the wire spool is sleeved on the outside of several limiting rods, so that the limiting rods retract inward and the telescopic assembly is in a retracted state;

[0017] The limiting rod and the second support rod are configured in a one-to-one correspondence.

[0018] Furthermore, the telescopic assembly includes a first support plate hinged to the limiting rod, and a second support plate hinged to the first support plate;

[0019] The other end of several second support plates is connected to a sliding sleeve, which is sleeved on the outside of the fixed rod;

[0020] A first elastic element is also sleeved on the outside of the fixed rod. The first elastic element is located above the sliding sleeve. When the plurality of the limiting rods are squeezed and contracted, the sliding sleeve moves upward and the first elastic element is compressed.

[0021] Furthermore, the limiting rod includes an inclined section, a transition section, and a vertical section connected in sequence;

[0022] A sliding cylinder is also connected to the vertical section, and the sliding cylinder is sleeved on the outside of the second support rod.

[0023] Furthermore, the guiding assembly includes a fixed plate slidably connected to the sliding rod, two rotating drums pivotally connected to the fixed plate, and the wire rope passing through the two rotating drums; the fixed plate slides along the sliding rod as the position of the wire rope changes.

[0024] Furthermore, a baffle is provided at the other end of the sliding rod, and a screw is connected to the power output end of the first driving part. The screw passes through the fixed plate and is screwed to the fixed plate.

[0025] The other end of the screw is pivotally connected to the baffle.

[0026] Furthermore, the braking assembly includes a first locking member connected to one of the rotating drums and a second locking member connected to the other rotating drum;

[0027] The fixed plate has long grooves on its opposite sides, and one end of the rotating drum passes through the long grooves respectively;

[0028] A second drive unit is connected to the fixed plate, and the power output end of the second drive unit is connected to the second locking member.

[0029] Furthermore, the fixing plate is equipped with a speed sensor for monitoring the transmission speed of the wire rope.

[0030] Compared with the prior art, this utility model has the following advantages:

[0031] The rotary wire rope unloader of this invention uses a support frame that rotates relative to the base frame to mount the wire spool onto a positioning frame. The bottom of the wire spool is supported by a flat support frame, achieving positioning and fixing of the coiled wire spool. A sliding rod is installed on the flat support frame, and the guide component slides relative to the sliding rod. When the wire on the wire spool is at the bottom, the guide component adjusts the position due to different coiling positions, avoiding the "rope biting" phenomenon caused by the weight of the load resulting in disordered rope arrangement during release. At the same time, a braking component is installed on the guide component, which can apply braking force at any time during the rope's descent, thereby reducing the rope's conveying speed or stopping it altogether. This avoids the defects of excessively high or low tension in existing technologies, ensuring the safety of the wire rope during descent. Attached Figure Description

[0032] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0033] Figure 1 This is a first-view perspective perspective view of the rotary wire rope release device described in this embodiment of the present invention.

[0034] Figure 2 This is a top view schematic diagram of the rotary wire rope unloader described in an embodiment of the present utility model;

[0035] Figure 3This is a two-dimensional perspective view of the rotary wire rope unloader described in an embodiment of the present invention.

[0036] Figure 4 for Figure 1 A magnified view of a section at point I;

[0037] Figure 5 for Figure 3 Enlarged view of a section at point II;

[0038] Figure 6 This is a cross-sectional view of the connection between the central shaft and the shaft cylinder according to an embodiment of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Base frame; 2. Support frame; 3. Guiding components; 4. Braking components;

[0041] 101. Central shaft; 102. First support rod; 103. Support leg; 104. First reinforcing rod; 105. Connecting rod;

[0042] 201. Flat support frame; 202. Positioning frame; 203. Sliding rod; 204. First drive unit; 205. Shaft cylinder; 206. Bearing;

[0043] 301. Fixed plate; 302. Rotating drum; 303. Baffle; 304. Screw; 305. Accommodation space;

[0044] 401. First locking element; 402. Second locking element; 403. Second driving unit;

[0045] 2011, Second support rod; 2012, Adjusting plate; 2013, Slide groove; 2014, Second reinforcing rod;

[0046] 2021, Fixed rod; 2022, Limiting rod; 2023, First support plate; 2024, Second support plate; 2025, Sliding sleeve; 2026, First elastic element; 2027, Sliding cylinder. Detailed Implementation

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0048] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0050] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0051] This embodiment relates to a rotary wire rope unloader, which, as a whole, ... Figures 1 to 3 As shown, the rotary wire rope unloader includes a base frame 1, a support frame 2 pivotally connected to the base frame 1, a guide assembly 3 mounted on the support frame 2, and a braking assembly 4 mounted on the guide assembly 3. The support frame 2 has a flat support frame 201 and a positioning frame 202 connected to the flat support frame 201. A coiled wire spool is fitted onto the positioning frame 202. The flat support frame 201 supports the wire rope. The flat support frame 201 has a sliding rod 203 extending along the height direction of the positioning frame 202. The guide assembly 3 is slidably connected to the sliding rod 203. The flat support frame 201 has a first driving part 204 that drives the guide assembly 3 to slide.

[0052] With the above configuration, the rotary wire rope unloader of this embodiment has a support frame 2 that rotates relative to the base frame 1. The wire spool is fitted onto the positioning frame 202, and the bottom of the wire spool is supported by a flat support frame 201, which realizes the positioning and fixation of the coiled wire spool. A sliding rod 203 is set on the flat support frame 201, and the guide component 3 slides relative to the sliding rod 203. When the wire on the wire spool is at the bottom, it is adjusted by the guide component 3 due to the different coiling positions, avoiding the "rope biting" phenomenon caused by the chaotic arrangement of the rope during release due to the weight of the load. At the same time, because a braking component 4 is set on the guide component 3, braking force can be applied at any time during the rope's descent, thereby reducing the rope's conveying speed or stopping it, avoiding the defects of excessively high or low tension in the prior art, and ensuring the safety of the wire rope during descent.

[0053] Based on the above overall introduction, this embodiment presents an exemplary structure of a rotary wire rope unloader, such as... Figures 1 to 3 As shown, the base frame 1, support frame 2, guide assembly 3, and braking assembly 4 can be installed on-site, facilitating the use of steel wire ropes in outdoor mines and avoiding the need to build large equipment such as winches as in existing technologies, thus improving the convenience of on-site work.

[0054] As a preferred embodiment, such as Figures 1 to 3 As shown, the base frame 1 includes a central shaft 101 and several first support rods 102 arranged in a circular array on the central shaft 101. The first support rods 102 are inclined to the central shaft 101, and the other end of the first support rods 102 is connected to a support leg 103. The support frame body 2 also includes a shaft sleeve 205 sleeved on the central shaft 101, and a bearing 206 is provided between the shaft sleeve 205 and the central shaft 101. The flat support frame 201 is connected to the shaft sleeve 205.

[0055] For ease of transport, the first support rod 102 can be inserted into the central shaft 101, allowing it to be disassembled during transportation and reassembled before on-site construction. In this embodiment, the first support rod 102 is made of hexagonal steel, increasing the overall structural strength of the base frame 1. Furthermore, as... Figure 1 As shown, a first reinforcing rod 104 is added between the central shaft 101 and the first support rod 102. The central shaft 101, the first support rod 102, and the first reinforcing rod 104 form a triangular structure, further improving stability. In this embodiment, three first support rods 102 are provided, and a connecting rod 105 is provided between two adjacent first support rods 102. In the horizontal direction, the three connecting rods 105 form a triangular stable structure, thereby strengthening the stability of the base frame 1 in both the height and horizontal directions.

[0056] Furthermore, such as Figures 1 to 3 As shown, the flat support frame 201 includes several second support rods 2011 evenly distributed circumferentially on the shaft cylinder 205. Adjusting plates 2012 are detachably connected to the second support rods 2011, and the support rods are provided with sliding grooves 2013 arranged along their length. The adjusting plates 2012 slide along the support rods in the adjusted state, and the several adjusting plates 2012 together form a limiting area that restricts the wire drum. A second reinforcing rod 2014 is provided between the second support rods 2011 and the shaft cylinder 205 to increase the structural strength of the flat support frame 201.

[0057] like Figure 5As shown, the adjusting plate 2012 is L-shaped. One end of the adjusting plate 2012 is connected to the second support rod 2011 by a bolt. The bolt passes through the slide groove 2013 and is equipped with a nut to fix the adjusting plate 2012. When adjustment is needed, the nut can be loosened to adjust the position of the adjusting plate 2012 on the second support rod 2011, thereby adapting to wire drums with different capacities.

[0058] Similarly, the second support rod 2011 is made of hexagonal steel. The connection between the second support rod 2011 and the shaft cylinder 205 can also be fixed by a plug-in method. For example... Figure 6 As shown, the upper part of the central shaft 101 has a shoulder, the upper part of which extends into the inner hole of the shaft sleeve 205. A copper sleeve or a self-lubricating bearing 206 is fitted onto the upper part of the central shaft 101. The shaft sleeve 205 and the bearing 206 are fixed by screwing a set screw inward from the outside of the shaft sleeve 205. A wire drum is placed on the support frame 2. Under the force of the weight, the wire drum rotates relative to the base frame 1, thus lowering the wire rope.

[0059] like Figures 1 to 2 As shown, the positioning frame 202 includes a fixed rod 2021 positioned above the shaft cylinder 205, several limiting rods 2022 evenly distributed around the fixed rod 2021, and a telescopic assembly connecting the limiting rods 2022 and the fixed rod 2021. The inner hole of the wire spool is fitted onto the outside of the limiting rods 2022, causing the limiting rods 2022 to retract inward, thus retracting the telescopic assembly. The limiting rods 2022 correspond one-to-one with the second support rods 2011.

[0060] like Figure 1 As shown in the figure, the upper parts of the three limiting rods 2022 are all connected to the fixed rod 2021. When the wire drum is squeezed and sleeved on the outside of the multiple limiting rods 2022, the limiting rods 2022 contract, the telescopic component is compressed, so that the wire drum can be smoothly and quickly placed on the rope release device, improving the convenience of construction.

[0061] like Figure 1 and Figure 3 As shown, the telescopic assembly includes a first support plate 2023 hinged to the limiting rod 2022, and a second support plate 2024 hinged to the first support plate 2023. The other ends of several second support plates 2024 are connected to a sliding sleeve 2025. The sliding sleeve 2025 is sleeved on the outside of the fixed rod 2021. A first elastic element 2026 is also sleeved on the outside of the fixed rod 2021. The first elastic element 2026 is located on the side of the sliding sleeve 2025. When several limiting rods 2022 are compressed and contracted, the sliding sleeve 2025 moves upward and the first elastic element 2026 is compressed.

[0062] As Figure 1 and Figure 3As shown, the first elastic element 2026 is a compression spring, and the inner hole of the sliding sleeve (2025) is adapted to the shape of the fixed rod 2021. When the limiting rod 2022 is compressed and deformed, it squeezes the first support plate 2023 and the second support plate 2024 to rotate and contract. The first elastic element 2026 can act on the limiting rod 2022 and play a supporting role on the inner hole of the wire drum, thereby firmly fixing the wire drum to the support frame 2, avoiding the swaying of the wire drum during rotation, which would cause the lowered heavy object to sway, and improving the stability of the release.

[0063] Furthermore, such as Figure 1 As shown, the limiting rod 2022 includes an inclined section, a transition section, and a vertical section connected in sequence. A sliding cylinder 2027 is also connected to the vertical section, and the sliding cylinder 2027 is sleeved on the outside of the second support rod 2011. The inclined sections at the upper ends of the three limiting rods 2022 are all connected to the fixed rod 2021, forming a pointed structure to facilitate the guidance of inserting multiple wire drums. Furthermore, a telescopic component and a first retraction component are provided so that when the force is uneven when the wire drum is placed on the positioning frame 202, the three limiting rods 2022 and the retraction component can retract simultaneously, improving the smoothness of wire drum insertion and preventing jamming.

[0064] In addition, such as Figure 1 and Figure 3 As shown, a baffle 303 is provided at the other end of the sliding rod 203. A screw 304 is connected to the power output end of the first drive unit 204. The screw 304 passes through the fixed plate 301 and is screwed to the fixed plate 301. The other end of the screw 304 is pivotally connected to the baffle 303. In this embodiment, the first drive unit 204 adopts a servo motor. The sliding rod 203 is arranged parallel to the fixed rod 2021, and the sliding rod 203 is mounted on a second support rod 2011. The screw 304 is arranged parallel to the sliding rod 203.

[0065] By setting up a first drive unit 204 and a screw 304, the fixed plate 301 can be driven to slide along the sliding rod 203. The speed of the first drive unit 204 is determined by the number of rotations of the wire drum. When the wire drum rotates once, the first drive unit 204 drives the fixed plate 301 to move a distance equal to the diameter of the wire rope. To ensure effectiveness, a Hall sensor, for example, needs to be installed on the wire drum to measure the number of rotations.

[0066] In this embodiment, a control system is also provided, which employs a programmable controller such as a PLC. Furthermore, a speed sensor is provided on the fixed plate 301 to monitor the transmission speed of the wire rope. By measuring the transmission speed of the wire rope, an electrical signal of the transmission speed is sent to the control system. The control system compares this transmission speed with a preset safe speed. If the speed exceeds the safe value, the braking assembly 4 is activated to slow down the running speed of the wire rope. The Hall sensor, the first drive unit 204, the speed sensor, and the second drive unit 403 described below are all electrically connected to the control system.

[0067] like Figure 3 As shown, the guiding assembly 3 includes a fixed plate 301 slidably connected to the sliding rod 203, and two rotating drums 302 pivotally connected to the fixed plate 301. A wire rope passes through the space between the two rotating drums 302. The fixed plate 301 slides along the sliding rod 203 as the position of the wire rope changes. In this embodiment, a deep groove ball bearing 206 is provided between the rotating drum 302 and the fixed plate 301. The wire rope passes between the two rotating drums 302, and the two rotating drums 302 guide the wire rope to prevent misalignment.

[0068] In addition, such as Figure 3 and Figure 5 As shown, the braking assembly 4 includes a first locking member 401 connected to one of its rotating drums 302, and a second locking member 402 connected to the other rotating drum 302. The fixed plate 301 has elongated slots on opposite sides, through which the two ends of one of its rotating drums 302 pass. A second drive unit 403 is connected to the fixed plate 301, and the power output end of the second drive unit 403 is connected to the second locking member 402. The first locking member 401 and the second locking member 402 are respectively connected to one end of the two rotating drums 302 via bearings 206.

[0069] In this embodiment, the second drive unit 403 is a telescopic cylinder or a hydraulic cylinder. Each rotating drum 302 is provided with a concave arc groove, and two concave arc grooves form a receiving space 305 through which the wire rope is lowered. During wire rope transmission, the receiving space 305 allows the wire rope to pass smoothly. When the speed sensor detects a speed exceeding the safe speed, the control system drives the second drive unit 403 to start, pushing the second locking member 402 closer to the first locking member 401, thereby reducing the distance of the receiving space 305, increasing the friction on the wire rope, and thus reducing the speed.

[0070] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary wire rope unloader, characterized in that: It includes a base frame (1), a support frame (2) pivotally connected to the base frame (1), a guide assembly (3) provided on the support frame (2), and a braking assembly (4) provided on the guide assembly (3); The support frame (2) is provided with a flat support frame (201) and a positioning frame (202) connected to the flat support frame (201). A coiled steel wire spool is sleeved on the positioning frame (202). The flat support frame (201) is used to support the steel wire rope. The flat support frame (201) is provided with a sliding rod (203) extending along the height direction of the positioning frame (202), the guide assembly (3) is slidably connected to the sliding rod (203), and the flat support frame (201) is provided with a first driving part (204) that drives the guide assembly (3) to slide.

2. The rotary wire rope unloader according to claim 1, characterized in that: The base frame (1) includes a central shaft (101), a plurality of first support rods (102) arranged in a circular array on the central shaft (101), the first support rods (102) being inclined to the central shaft (101), and the other end of the first support rods (102) being connected to a support leg (103). The support frame (2) also includes a sleeve (205) sleeved on the central shaft (101), and a bearing (206) is provided between the sleeve (205) and the central shaft (101); The flat support frame (201) is connected to the shaft cylinder (205).

3. The rotary wire rope unloader according to claim 2, characterized in that: The flat support frame (201) includes several second support rods (2011) evenly distributed around the circumference of the shaft cylinder (205); An adjusting plate (2012) is detachably connected to the second support rod (2011), and the support rod is provided with a sliding groove (2013) arranged along its length direction; The adjusting plate (2012) slides along the support rod in the adjusted state, and the plurality of adjusting plates (2012) together form a limiting area that restricts the wire drum.

4. The rotary wire rope unloader according to claim 3, characterized in that: The positioning frame (202) includes a fixed rod (2021) disposed above the shaft cylinder (205), a plurality of limiting rods (2022) evenly distributed around the fixed rod (2021), and a telescopic assembly connecting the limiting rods (2022) and the fixed rod (2021). The inner hole of the wire spool is sleeved on the outside of a plurality of the limiting rods (2022) so that the limiting rods (2022) retract inward and the telescopic assembly is in a retracted state; The limiting rod (2022) and the second support rod (2011) are configured in a one-to-one correspondence.

5. The rotary wire rope unloader according to claim 4, characterized in that: The telescopic assembly includes a first support plate (2023) hinged to the limiting rod (2022) and a second support plate (2024) hinged to the first support plate (2023); The other end of several of the second support plates (2024) is connected to a sliding sleeve (2025), which is sleeved on the outside of the fixed rod (2021); A first elastic element (2026) is also sleeved on the outside of the fixed rod (2021). The first elastic element (2026) is located on the side of the sliding sleeve (2025). When the plurality of the limiting rods (2022) are squeezed and contracted, the sliding sleeve (2025) moves upward and the first elastic element (2026) is compressed.

6. The rotary wire rope unloader according to claim 5, characterized in that: The limiting rod (2022) includes an inclined section, a transition section, and a vertical section connected in sequence; A slide cylinder (2027) is also connected to the vertical section, and the slide cylinder (2027) is sleeved on the outside of the second support rod (2011).

7. The rotary wire rope unloader according to claim 6, characterized in that: The guiding assembly (3) includes a fixed plate (301) slidably connected to the sliding rod (203), two rotating drums (302) pivotally connected to the fixed plate (301), and the wire rope passing through the two rotating drums (302); the fixed plate (301) slides along the sliding rod (203) as the position of the wire rope changes.

8. The rotary wire rope unloader according to claim 7, characterized in that: The other end of the sliding rod (203) is provided with a baffle (303), and the power output end of the first driving part (204) is connected to a screw (304). The screw (304) passes through the fixed plate (301) and is screwed to the fixed plate (301). The other end of the screw (304) is pivotally connected to the baffle (303).

9. The rotary wire rope unloader according to claim 8, characterized in that: The braking assembly (4) includes a first locking member (401) connected to one of the rotating drums (302) thereon, and a second locking member (402) connected to the other of the rotating drums (302); The fixed plate (301) has long grooves on its opposite sides, and the two ends of the rotating cylinder (302) pass through the long grooves respectively; The fixing plate (301) is connected to a second driving part (403), and the power output end of the second driving part (403) is connected to the second locking member (402).

10. The rotary wire rope unloader according to claim 9, characterized in that: The fixing plate (301) is equipped with a speed sensor for monitoring the transmission speed of the wire rope.

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