A kind of pulley steel wire rope off groove monitoring and protection device

Abstract

This invention discloses a monitoring and protection device for wire rope derailment from a pulley, comprising a pulley body with a groove, two floating rings floatingly mounted on the side walls of the groove, one or more pulley support rods surrounding the pulley body, and side guard plates disposed on the end faces of both sides of the pulley body. The wire rope is installed in the wire rope groove formed between the pulley support rods. When the wire rope derails and squeezes any one of the floating rings, the floating rings move axially and trigger the side guard plates to flip to the top of the pulley body, switching the side guard plates from an end-face protection structure to a radial protection structure to provide emergency protection for the wire rope. This device can achieve structural response and linkage protection when the wire rope derails, taking into account secondary protection functions such as derailment buffering and derailment protection, effectively reducing the risk of the wire rope derailing from the groove.

Description

Technical Field

[0001] This invention relates to the field of wire rope pulleys, and more specifically to a device for monitoring and protecting wire ropes from slipping off the pulley groove. Background Technology

[0002] Pulleys and wire ropes are widely used in lifting equipment, hoisting equipment, hoisting equipment, traction equipment, mining machinery, port machinery, and other applications involving wire rope guidance and transmission. In existing equipment, the wire rope is typically wound within the groove of the pulley, and the pulley guides and limits the wire rope's running path to ensure stable operation along a predetermined trajectory. During actual operation, the wire rope is often affected by various factors such as changes in the incoming rope angle, drum rope arrangement deviation, equipment vibration, load swaying, installation errors, local twisting of the wire rope, and force fluctuations during winding, unwinding, direction changing, and load transfer, resulting in lateral deviations. When the actual running trajectory of the wire rope deviates from the center of the pulley groove, the wire rope will gradually be squeezed and climb towards one side of the groove, potentially detaching from the groove and causing problems such as rope jamming, rope abrasion, wire breakage, equipment impact, or even more serious safety accidents. Therefore, effectively preventing the wire rope from detaching from the pulley groove remains a key technical problem that needs to be solved in this field.

[0003] To address the issue of wire rope derailment, a common approach in existing technologies is to install side guards, protective rings, covers, or other enclosed protective structures around or on both sides of the pulley. This external enclosure prevents the wire rope from completely slipping off the pulley after it has already deviated. While this approach reduces the probability of the wire rope directly detaching from the pulley to some extent, it is essentially a passive containment method. It relies primarily on a fixed, enclosed structure to prevent the wire rope from derailing when it has already significantly deviated or is close to derailment, rather than providing adaptive adjustments or early intervention in the initial stages of derailment. In other words, traditional enclosed pulleys primarily address the problem of the wire rope falling out, but do not effectively solve the problem of why the wire rope continues to derail and how to correct it during the derailment process.

[0004] Furthermore, most traditional pulleys adopt a structure where the groove is integrally formed or fixedly connected to the pulley body, and the axial position of the groove relative to the pulley body remains unchanged during operation. When the wire rope shifts to one side of the groove due to changes in working conditions, traditional integrated pulleys lack a structure that can float relative to or adapt to the shift trend. The groove itself cannot axially reposition or compensate for the shift direction of the wire rope, resulting in the wire rope continuously being squeezed and contacted on one side of the groove wall. As the pulley continues to rotate, the wire rope, under tension, will continuously climb upwards along the shift direction, eventually changing from a normal state of being embedded in the groove to a state of riding on the groove or even completely detached from the groove. Therefore, a major reason why wire ropes easily detach from the groove in existing technologies is that the groove position of traditional pulleys is fixed and cannot dynamically adapt to changes in the actual running trajectory of the wire rope, making it difficult to release and correct the shift trend of the wire rope in a timely manner.

[0005] Furthermore, existing enclosed protective structures generally suffer from problems such as bulky structure, inconvenient maintenance, difficulty in observation, and susceptibility to rope jamming and abrasion. Because the wire rope operating area is surrounded by enclosed or semi-enclosed barriers, operators often find it difficult to observe the real-time alignment of the wire rope with the pulley groove during equipment operation. It is difficult to detect whether the wire rope has shifted, climbed out of the groove, experienced abnormal friction, or had foreign objects stuck. When internal fault signs appear, it is often necessary to disassemble the protective components before inspection, hindering timely detection and handling of the fault. Moreover, when the wire rope experiences continuous lateral pressure inside the enclosed structure, the fixed barriers cannot return the wire rope to its normal groove position. Instead, they may cause localized compression and continuous friction between the wire rope and the protective components at the edge of the pulley groove, further aggravating wear on the outer layer of the wire rope and localized damage to the pulley. In severe cases, this can even lead to rope jamming, affecting the overall safety and reliability of the machine.

[0006] Therefore, existing technologies still lack a pulley wire rope derailment monitoring and protection device that can both adaptively adjust the axial structure of the pulley groove side structure according to the stress condition when the wire rope derails, and quickly form emergency radial protection when the wire rope derailment further increases. In particular, a technical solution is needed that structurally integrates derailment sensing, axial clearance, and secondary protection functions, enabling the wire rope to achieve position buffering and derailment release through relevant structures when it is about to derail, and further deploy protective components to improve the protective capability in the outer circumferential direction of the pulley when necessary. This prevents the wire rope from completely detaching from the pulley groove, thereby improving the operational safety and reliability of the pulley assembly under complex working conditions. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides a pulley wire rope derailment monitoring and protection device, which effectively overcomes the shortcomings of existing technologies.

[0008] This invention is achieved through the following technical solution: a pulley wire rope derailment monitoring and protection device, comprising: A pulley body having a groove; Two floating rings are floatingly installed on the side wall of the pulley groove of the pulley body, and the two floating rings can move left and right relative to the pulley body in the axial direction; One or more pulley support rods are arranged around the entire pulley body, and a wire rope groove is formed in the middle of the one or more pulley support rods. The pulley wire support is installed in the wire rope groove. One or more side guard plates are arranged around the entire pulley body, and each side guard plate is hinged to the pulley body. The side guard plates are arranged on both ends of the pulley body, and a hollow buffer cavity is formed between the side guard plates and the pulley body. When the floating ring on any side is squeezed by the pulley wire and generates a lateral thrust, the floating ring drives the side guard plate to rotate along the hinge end and flip to the top of the pulley body. At this time, each side guard plate serves as a radial protection for the pulley body.

[0009] As a preferred technical solution, an annular groove is formed on each of the opposite surfaces of the pulley body, and the floating ring is installed in the annular groove.

[0010] As a preferred technical solution, one or more hinge slots are provided around both sides of the pulley body, and the side guard plate is hinged and installed in each hinge slot.

[0011] As a preferred technical solution, an "L"-shaped driving plate is provided on the floating ring at the position corresponding to each hinge slot. The driving plate is provided on one side of the side guard plate. When the floating ring is subjected to axial compression and movement, it drives the driving plate to flip the side guard plate, so that the side guard plate serves as protection for the radial direction of the pulley body.

[0012] As a preferred technical solution, the side guard plate includes a bending section and a protective section, the bending section is arranged corresponding to the drive piece, and the bending section and the protective section are in an "L" shape.

[0013] As a preferred technical solution, each of the annular grooves is equipped with an elastic gas storage ring, and the elastic gas storage ring is provided with small air inlet and outlet holes. When the elastic gas storage ring is squeezed, it releases gas and deforms. The elastic gas storage ring is made of rubber material.

[0014] As a preferred technical solution, the outer surface of the floating ring is provided with multiple limiting protrusions to restrict the circumferential rotation of the floating ring.

[0015] As a preferred technical solution, the pulley support rod includes a support section and an inclined section, wherein the inclined section has two segments, which are respectively disposed on both sides of the support section.

[0016] As a preferred technical solution, a bearing is installed in the middle of the pulley body, and a mounting rod is provided through the bearing.

[0017] As a preferred technical solution, the bending section is provided with a protruding anti-slip hook to prevent the drive plate from separating from the bending section during driving.

[0018] The beneficial effects of this invention are: by setting axially floating rings on both sides of the pulley body groove, this invention enables the wire rope to push the floating rings to produce adaptive displacement along the axial direction when lateral deviation occurs, thereby overcoming the defects of the traditional integrated pulley groove position being fixed and unable to adjust with the change of the wire rope deviation trajectory, which helps to slow down the continuous deviation of the wire rope and reduce the risk of derailment.

[0019] This invention, by setting a pulley support rod on the floating ring and utilizing the inclined section of the pulley support rod to contact the offset wire rope, can convert the lateral compressive force of the wire rope into the axial movement power of the floating ring before the wire rope is about to derail, thereby achieving an early response to the wire rope offset trend and having a good structural monitoring and buffer protection effect.

[0020] This invention links the axial displacement of the floating ring with the flipping action of the side guard plate. Under normal conditions, the side guard plate is used to protect the side end face of the pulley body. When the wire rope deviates abnormally, it can be flipped to the top of the pulley body, temporarily increasing the protection range of the pulley body in the radial direction, thereby forming a secondary emergency protection for the wire rope and preventing the wire rope from completely leaving the wire rope groove.

[0021] This invention adopts a purely mechanical linkage method of "steel wire rope offset - floating ring axial movement - side guard plate flipping protection", which simultaneously realizes offset adaptive adjustment and subsequent emergency protection. Compared with the traditional enclosed pulley system that relies solely on fixed barriers for passive anti-detachment, it can more effectively improve the operational safety and adaptability of the pulley assembly to actual working conditions. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the front structure of the present invention; Figure 3 This is a schematic cross-sectional view of the present invention; Figure 4 For the present invention Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a front cross-sectional view of the present invention; Figure 6 This is a schematic diagram of the floating ring structure of the present invention; Explanation of reference numerals in the attached figures: 1. Pulley body; 8. Wheel groove; 7. Floating ring; 5. Pulley support rod; 2. Side guard plate; 12. Annular groove; 9. Hinge groove; 6. Drive plate; 21. Bending section; 22. Protective section; 13. Elastic air storage ring; 20. Limiting protrusion; 51. Support section; 52. Inclined section; 3. Bearing; 4. Mounting rod; 10. Anti-slip hook. Detailed Implementation

[0024] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0025] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0026] like Figures 1-6 As shown, this invention provides a pulley wire rope derailment monitoring and protection device, which is used to guide, support, deviate from, and protect the wire rope from derailment during operation. The device includes a pulley body 1, two floating rings 7, one or more pulley support rods 5, and one or more side guard plates 2. The pulley body 1 is the main load-bearing component of the entire device. A groove 8 is formed around the outer periphery of the pulley body 1 to accommodate the wire rope. Under normal operating conditions, the wire rope runs along the circumferential path of the groove 8, thereby achieving guidance and transition with the help of the pulley body 1. A bearing 3 is installed in the middle of the pulley body 1, and a mounting rod 4 passes through the bearing 3. The entire pulley body 1 is mounted to the support position of an external device via the mounting rod 4, allowing the pulley body 1 to rotate smoothly around the mounting rod 4, thus meeting the rotational support requirements of the wire rope during traction, winding, unwinding, or guidance processes.

[0027] To enable axial adaptive adjustment when the wire rope deviates, a floating ring 7 is provided on each side wall of the pulley body 1 groove 8. The two floating rings 7 are located on the left and right sides of the pulley body 1 and are both floating relative to the pulley body 1. Preferably, an annular groove 12 is formed on opposite sides of the pulley body 1, and each floating ring 7 is installed in the corresponding annular groove 12, allowing the floating ring 7 to move left and right relative to the pulley body 1 in the axial direction. That is, the floating ring 7 is not fixedly connected to the pulley body 1, but has a certain degree of axial displacement freedom. When subjected to external extrusion, it can displace along the axial direction of the pulley body 1 under the guidance of the annular groove 12, thus achieving subsequent linkage protection function. To maintain circumferential stability of the floating ring 7 during axial movement and prevent disordered circumferential rotation during operation, multiple limiting protrusions 20 are provided on the outer circumferential surface of the floating ring 7, such as... Figure 6 As shown, the limiting protrusion 20 can form a limiting fit with the corresponding position of the annular groove 12 or the pulley body 1, thereby restricting the circumferential rotation of the floating ring 7, so that the floating ring 7 mainly works by axial sliding, ensuring the stability of its force transmission and linkage action.

[0028] like Figures 1-3As shown, to provide a structural response to the wire rope's offset tendency, one or more pulley support rods 5 are arranged around the entire pulley body 1 on the outside of the two floating rings 7. Each pulley support rod 5 is distributed along the circumference of the pulley body 1, and a wire rope groove is formed between adjacent pulley support rods 5 to accommodate the wire rope. The wire rope is supported and installed within this groove. The pulley support rods 5 effectively constitute an auxiliary guiding and triggering structure located outside the pulley groove 8. Under normal conditions, the wire rope runs within the wire rope groove area formed between the pulley support rods 5 without exerting excessive lateral pressure on the pulley support rods 5. When the wire rope shifts laterally during winding, unwinding, or guiding due to changes in the incoming rope angle, rope layout deviation, force fluctuation, or other abnormal working conditions, the wire rope will first contact the corresponding pulley support rod 5 and transmit the offset compressive force to the corresponding floating ring 7 through the pulley support rod 5, causing the floating ring 7 to move axially. Preferably, each pulley support rod 5 includes a support section 51 located in the middle and inclined sections 52 disposed on both sides of the support section 51. The inclined sections 52 have two segments, respectively disposed on the left and right sides of the support section 51. The support section 51 is mainly used to form the normal limiting support area of ​​the wire rope, while the inclined sections 52 on both sides play a guiding transition and offset triggering role. When the wire rope deviates to either side, it will first contact the inclined section 52 on the corresponding side. Since the inclined section 52 has an inclined guide surface, it can convert the lateral offset force of the wire rope into an axial thrust on the floating ring 7, thereby causing the floating ring 7 to move in the axial direction. Thus, the wire rope can achieve early response in the initial stage of offset through the structural cooperation between the inclined section 52 of the pulley support rod 5 and the floating ring 7, instead of passively blocking it when the wire rope has obviously ridden or dislodged from the groove.

[0029] like Figure 3 and Figure 4 As shown, to further enhance emergency protection during axial movement of the floating ring 7, one or more side guard plates 2 are arranged around the two end faces of the pulley body 1. Each side guard plate 2 is distributed along the circumference of the pulley body 1 and is hinged to it. Preferably, one or more hinge slots 9 are formed on both sides of the pulley body 1 along the circumference, and a side guard plate 2 is hinged in each slot 9, allowing each side guard plate 2 to rotate around its corresponding hinge end. Under normal conditions, the side guard plates 2 are positioned on both end faces of the pulley body 1, forming a hollow buffer cavity with the pulley body 1. This buffer cavity reduces the overall structural weight, provides space for the side guard plates 2 to rotate, and offers a buffer area against external impacts, thus providing end face protection under normal conditions. In other words, when the wire rope does not deviate abnormally, the side guard plates 2 are mainly distributed on the outer periphery of the two end faces of the pulley body 1, which play a role in preventing collisions, bumps and accidental contact on the two end faces of the pulley body 1.

[0030] To enable the axial movement of the floating ring 7 to drive the side guard plate 2 to flip, an "L"-shaped drive piece 6 is provided on the floating ring 7 at the position corresponding to each hinge slot 9. Each drive piece 6 is configured to cooperate with one side of the corresponding side guard plate 2. When the floating ring 7 is laterally squeezed by the wire rope and moves in the axial direction, the floating ring 7 drives each drive piece 6 to move synchronously in the axial direction. During the displacement, the drive piece 6 contacts the corresponding side guard plate 2 and applies a flipping driving force to the side guard plate 2, causing the side guard plate 2 to rotate around the hinge end. It gradually flips open from its normal position on both sides of the pulley body 1 and unfolds towards the top of the pulley body 1. As the side guard plates 2 continue to flip, each side guard plate 2 gradually changes from its original end face protection structure to a protection structure located on the radial outer side of the pulley body 1. Thus, when the wire rope deviates significantly or is close to derailing, an emergency protection boundary is formed in the radial direction of the pulley body 1, preventing the wire rope from continuing to derail along the predetermined deviation direction and achieving secondary protection.

[0031] Preferably, the side guard plate 2 includes a bent section 21 and a protective section 22. The bent section 21 is positioned on the side closest to the drive plate 6, and the protective section 22 is the main plate part used to form radial protection after the side guard plate 2 is flipped. The bent section 21 and the protective section 22 together form an "L" shape. With this structural design, the bent section 21 can better contact the drive plate 6 and receive the driving force, so that the drive plate 6 can stably push the side guard plate 2 to flip during the movement of the floating ring 7. The protective section 22 extends radially outward from the pulley body 1 after flipping into place, thereby increasing the radial protection diameter of the entire pulley body 1. More preferably, a protruding anti-slip hook 10 is provided on the bent section 21. The anti-slip hook 10 is used to prevent the drive plate 6 from slipping or separating from the bent section 21 during the driving process. In other words, when the floating ring 7 is moved by force and pushes the bending section 21 through the drive plate 6, the anti-slip hook 10 can improve the connection and contact stability between the drive plate 6 and the bending section 21, and avoid the side guard plate 2 from not turning over sufficiently or the linkage from failing due to local slippage, thereby ensuring that the mechanical linkage between the floating ring 7 and the side guard plate 2 is reliable.

[0032] To ensure smoother axial movement of the floating ring 7 and provide cushioning when compressed by the wire rope, elastic air-storing rings 13 are preferably installed in the annular grooves 12 on both sides of the pulley body 1. The elastic air-storing rings 13 are positioned between or near the floating ring 7 and the annular grooves 12, and are made of rubber with small inlet and outlet holes. When the floating ring 7 is laterally compressed by the wire rope and moves axially, it exerts a compressive force on the elastic air-storing rings 13. After compression, the internal gas in the elastic air-storing rings 13 is discharged through the inlet and outlet holes, resulting in controllable deformation. This deformation provides elastic cushioning for the axial movement of the floating ring 7, preventing rigid impacts caused by sudden force changes. Furthermore, after the external force is released, the elastic air-storing rings 13 provide a certain tendency for the floating ring 7 to return to its original position due to their own rebound. Since the elastic gas storage ring 13 is made of rubber material, it can maintain good elasticity and durability during repeated compression and recovery, thereby improving the stability and reliability of the entire device during long-term use.

[0033] In practical use, the wire rope normally runs within the wire rope groove area formed between the pulley groove 8 of the pulley body 1 and the pulley support rod 5. At this time, the floating rings 7 on both sides are basically in a relatively neutral position, and the side guard plates 2 also maintain a normal position close to the two end faces of the pulley body 1, thus mainly undertaking the protective function of the side end faces of the pulley body 1. When the wire rope deviates to either side during operation, the wire rope will preferentially press against the inclined section 52 of the pulley support rod 5 on that side. After being squeezed by the wire rope, the inclined section 52 transmits the lateral deviation force of the wire rope to the floating ring 7 on the corresponding side, causing the floating ring 7 on that side to displace along the axial direction of the pulley body 1. During the movement of the floating ring 7, the drive plates 6 connected to or correspondingly arranged with the floating ring 7 move synchronously, and through the pushing action on the bending section 21 of each side guard plate 2, drive the side guard plate 2 to flip along the hinge end. As the side guard plates 2 flip to the top position of the pulley body 1, multiple side guard plates 2 together form a protective structure on the outer periphery of the pulley body 1 along the circumferential direction. At this time, each side guard plate 2 acts as a radial protective component of the pulley body 1, forming an outer periphery block for the wire rope that is about to derail, preventing the wire rope from continuing to derail from the wire rope groove. In other words, the present invention achieves structural monitoring and emergency protection of the wire rope derailment trend through a continuous mechanical linkage process of "wire rope derailment - pulley support rod 5 being compressed - floating ring 7 axially moving - drive plate 6 pushing side guard plates 2 to flip".

[0034] Furthermore, since the two floating rings 7 are respectively set on both sides of the pulley body 1, regardless of whether the wire rope deviates to the left or to the right, the floating ring 7 on the corresponding side can respond with force and trigger the flipping action of the corresponding side or the entire side guard plate 2, thus enabling the invention to have bidirectional offset adaptability. When the wire rope deviates slightly, the axial movement of the floating ring 7 can, to a certain extent, adaptively adjust the running position of the wire rope, helping to release the unilateral compression state of the wire rope relative to the wheel groove 8 and slowing down the tendency of the wire rope to continuously climb the side wall of the wheel groove 8; while when the wire rope deviates further, the side guard plate 2 flips and unfolds in time, increasing the radial protection range, thereby forming a more intuitive and effective emergency anti-detachment protection. Therefore, this invention does not simply rely on fixed barriers to passively block the wire rope, but through the linkage structure of floating ring 7, pulley support rod 5 and side guard plate 2, the side structure of wheel groove 8 can first produce axial adaptation action when the wire rope deviates, and then further expand the outer peripheral protection, taking into account both the buffer adjustment in the initial stage of deviation and the emergency blocking in the subsequent stage, which is suitable for various wire rope guiding and pulley transmission occasions.

[0035] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A device for monitoring and protecting pulley wire rope from slippage, characterized in that, include: The pulley body (1) has a pulley groove (8); Two floating rings (7) are floatingly installed on the side wall of the wheel groove (8) of the pulley body (1), and the two floating rings (7) can move left and right relative to the pulley body (1) in the axial direction; One or more pulley support rods (5) are arranged around the entire pulley body (1), and a wire rope groove is formed in the middle of the one or more pulley support rods (5), and the pulley wire support is installed in the wire rope groove; One or more side guard plates (2) are arranged around the entire pulley body (1), and each side guard plate (2) is hinged to the pulley body (1). The side guard plates (2) are arranged on both sides of the pulley body (1), and a hollow buffer cavity is formed between the side guard plates (2) and the pulley body (1). When the floating ring (7) on any side is squeezed by the pulley wire and generates a lateral thrust, the floating ring (7) drives the side guard plate (2) to rotate along the hinge end and flip to the top of the pulley body (1). At this time, each side guard plate (2) serves as the radial protection of the pulley body (1).

2. The pulley wire rope derailment monitoring and protection device according to claim 1, characterized in that: The pulley body (1) has an annular groove (12) on each of its opposite sides, and the floating ring (7) is installed in the annular groove (12).

3. The pulley wire rope derailment monitoring and protection device according to claim 1, characterized in that: The pulley body (1) has one or more hinge slots (9) around both sides, and the side guard plate (2) is hinged in each hinge slot (9).

4. The pulley wire rope derailment monitoring and protection device according to claim 3, characterized in that: An "L"-shaped drive plate (6) is provided on the floating ring (7) corresponding to the position of each hinge groove (9). The drive plate (6) is provided on one side of the side guard plate (2). When the floating ring (7) is subjected to axial compression and movement, it drives the drive plate (6) to flip the side guard plate (2), so that the side guard plate (2) serves as radial protection for the pulley body (1).

5. The pulley wire rope derailment monitoring and protection device according to claim 4, characterized in that: The side guard plate (2) includes a bending section (21) and a protective section (22). The bending section (21) is arranged corresponding to the drive piece (6), and the bending section (21) and the protective section (22) are in an "L" shape.

6. The pulley wire rope derailment monitoring and protection device according to claim 2, characterized in that: Each of the annular grooves (12) is equipped with an elastic gas storage ring (13). The elastic gas storage ring (13) is provided with small air inlet and outlet holes. When the elastic gas storage ring is squeezed, it will release gas and deform. The elastic gas storage ring is made of rubber material.

7. The pulley wire rope derailment monitoring and protection device according to claim 1, characterized in that: The outer surface of the floating ring (7) is provided with multiple limiting protrusions (20) to limit the rotation of the floating ring (7) in the circumferential direction.

8. The pulley wire rope derailment monitoring and protection device according to claim 1, characterized in that: The pulley support rod (5) includes a support section (51) and an inclined section (52). The inclined section (52) has two segments, which are respectively located on both sides of the support section (51).

9. The pulley wire rope derailment monitoring and protection device according to claim 1, characterized in that: A bearing (3) is installed in the middle of the pulley body (1), and a mounting rod (4) is provided through the bearing (3).

10. The pulley wire rope derailment monitoring and protection device according to claim 5, characterized in that: The bent section (21) is provided with a raised anti-slip hook (10).

Images