A crane hook anti-collision early warning device

Abstract

The application discloses a crane hook anti-collision early warning device in the field of hoisting devices, and the crane comprises a mounting beam, a hoisting assembly and a hoisting assembly, and the early warning device comprises: a guide assembly arranged in the mounting beam and frictionally connected with a hoisting wire, the guide assembly realizes the position-guided movement of the hoisting wire on a winding roller by friction with the hoisting wire in the winding and unwinding state; and an early warning assembly which is slidably arranged on the winding roller on the winding side of the hoisting wire, and the hoisting wire will cause extrusion to the early warning assembly in the winding process until the hoisting wire is completely wound on the winding roller; the application has the beneficial effects that: the guide assembly is arranged to realize the guidance of the hoisting wire by taking the movement of the hoisting wire as power in the winding process of the hoisting wire, and the extrusion of the early warning assembly is realized in the guiding process, the winding completion alarm is realized, the pulling between the hoisting wire and the hook is avoided, the structure is simple, and the application is convenient to use.

Description

Technical Field

[0001] This invention relates to the field of lifting devices, and more specifically to a crane hook anti-collision warning device. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. It is also called an overhead crane, gantry crane, or hoist. A crane mainly includes a hoisting mechanism, traveling mechanism, luffing mechanism, slewing mechanism, and metal structure. The hoisting mechanism is the basic working mechanism of a crane, mostly composed of a sling system and a winch, although some use a hydraulic system to lift and lower heavy objects.

[0003] When the hook of an existing crane is lifting goods, if the operator is not careful when the hook reaches the top, it is easy for the hook to collide with the bottom of the take-up box, which will cause the wire rope to be pulled. Over time, this can easily lead to the wire rope breaking or the take-up box being damaged.

[0004] Subsequently, some warning devices to prevent hook collisions emerged. Most of these devices work by placing a damping structure between the hook and the take-up box housing to buffer the impact. The damping structure buffers the impact before it occurs and issues a warning at the same time or after the impact reaches a certain point. This method can indeed prevent collisions between the hook and the take-up box to some extent, but it also has certain drawbacks. When the hook contacts the damping structure and compresses it, the wire rope is also under tension, which may lead to the wire rope breaking over time.

[0005] Therefore, we propose a crane hook anti-collision early warning device. Summary of the Invention

[0006] To address the aforementioned shortcomings of the prior art, the present invention provides a crane hook anti-collision early warning device.

[0007] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0008] A crane hook anti-collision warning device is disclosed. The crane includes a mounting beam, a hoisting assembly, and a lifting assembly. The hoisting assembly includes a hook and a lifting line, with the hook fixedly attached to the bottom end of the lifting line. The lifting assembly is mounted on the mounting beam and includes a winding roller, one end of which is fixedly connected to the top of the lifting line. The lifting assembly drives the winding roller to rotate and retract the lifting line. Through holes for the lifting line to pass through are provided on the top and bottom surfaces of the mounting beam. The warning device includes:

[0009] The guide assembly is located inside the mounting beam and is slidably frictionally connected to the suspension line. During the movement of the suspension line, the friction force provides power to the guide assembly, so that the winding roller slides and guides the suspension line through the guide assembly during the winding process to avoid the suspension line from piling up or being difficult to unwind during the winding and unwinding process.

[0010] The warning component is slidably mounted on the winding roller on one side of the cable winding direction. During the cable winding process, the cable squeezes the warning component until the cable is completely wound onto the winding roller, triggering the warning component to issue an alarm signal.

[0011] By incorporating a guide component and a warning component, the guide component, via the lifting component, guides the suspended wire as it rises and contacts the guide component during winding. This causes the guide component to move on the mounting beam, thus guiding the suspended wire. This ensures the wire is evenly wound around the winding roller during winding, preventing it from piling up in one place. The upward movement of the suspended wire serves as the driving force for guidance. The structure is simple and easy to use. The warning component is slidably mounted on the winding roller on the winding side. During winding, the wire is gradually guided by the guide component to the side where the warning component is located. When the wire contacts the warning component, this… As the cable reel continues to be reeled in, the suspended cable gradually presses the warning component to one side of the winding roller. When the cable is fully reeled in, the warning component issues an alarm signal, reminding the operator to stop the reeling operation. This effectively avoids collisions between the hook and the mounting beam during the reeling process. Compared to existing hook anti-collision devices, this device incorporates a damping mechanism to buffer the impact between the hook and the mounting beam. It does not obstruct the reeling process at all, nor does it cause any contact or impact on the structure between the hook and the suspended cable. It does not pull or obstruct the suspended cable, thus completing the reeling warning without any issues. The overall performance is significantly better.

[0012] Further defining the guide assembly, it includes a sliding back plate, a left roller, a right roller, a drive gear, a reversing reduction gear, a driven gear, a sliding gear, and a sliding rack;

[0013] The top of the suspension line is fixedly connected to the left side of the winding roller. The line is wound from the left side to the right side of the winding roller. The sliding back plate is horizontally slidably mounted on the back plate of the mounting beam. The left roller is rotatably mounted on the front side of the sliding back plate via a rotating shaft. The right roller is rotatably connected to the front side of the sliding back plate via a first coupling. The gap between the left and right rollers is tightly fitted with the outer diameter of the suspension line. The wheel surfaces of both the left and right rollers have deformation functions. The inner end of the first coupling passes through the sliding back plate and is located on the back side of the sliding back plate. The reversing reduction gear is also rotatably mounted on the back side of the sliding back plate via a rotating shaft and meshes with the driving gear. The driven gear and the sliding gear are rotatably mounted on the sliding back plate via a second coupling. The driven gear meshes with the reversing reduction gear. The sliding rack is fixedly mounted on the bottom surface of the mounting beam and meshes with the sliding gear. The sliding rack is offset from the left and right rollers in the front-rear direction.

[0014] By setting up a sliding backplate, the left roller, right roller, drive gear, reversing reduction gear, driven gear, and sliding gear are all mounted on the sliding backplate. The left and right rollers clamp the suspended line. When the suspended line is fully unloaded and being retracted, the suspended line rises, causing the right roller to rotate clockwise. The right roller drives the drive gear to rotate clockwise via the first coupling. The clockwise rotation of the drive gear drives the drive reduction gear to rotate counterclockwise. The counterclockwise rotation of the drive reduction gear drives the driven gear to rotate clockwise. The clockwise rotation of the driven gear drives the sliding gear to rotate clockwise via the second coupling. The clockwise rotation of the sliding gear moves to the right on the sliding rack, thereby causing the sliding backplate to move to the right. This achieves line retraction guidance during the retraction phase. The same principle applies during unloading, only in the opposite direction. The lifting and lowering of the suspended line serves as the power source for guidance, eliminating the need for an additional power source and saving costs.

[0015] Further specifying, the early warning component includes a pressure sensor, a return spring, a controller, and an alarm; the pressure sensor is generally in the shape of a stepped cylinder and is mounted on the winding roller. The pressure sensor includes a large-diameter housing section and a small-diameter sensing section. One end of the return spring passes through the circumference of the sensing section and is secured to the housing section. An inner pressure ring is provided on the inner side of the baffle on the right side of the winding roller. The other end of the return spring passes through the inner pressure ring and is secured to the baffle on the right side of the winding roller. The pressure sensor and the controller are connected via a wireless communication module. The alarm and the controller are electrically connected and integrated in the operator's operating room; when the cable is fully retracted onto the winding roller, the sensing end face of the sensing section abuts against the inner pressure ring.

[0016] The pressure sensor within the warning assembly acts as a stop for the cable retraction. During retraction, the cable is guided by the guide assembly, gradually squeezing the housing section. This causes the housing section to move the sensing section to the right side of the winding roller until the cable is completely retracted onto the winding roller. At this point, the sensing section comes into contact with the inner pressure ring, and the pressure sensor detects the pressure, sending a signal to the controller. The controller then activates the alarm to alert the operator to stop the cable retraction. This warning assembly setup prevents pulling between the cable and the hook, thus providing a warning. Furthermore, by engaging the two ends of the return spring with the pressure sensor and the winding roller's baffle, it prevents the pressure sensor from slipping out of the return spring during cable release, thus avoiding the problem of the sensing section of the pressure sensor not aligning with the return spring for the next retraction.

[0017] Further, the back of the mounting beam is provided with a sliding groove that extends through its right end. The width of the sliding groove is in clearance fit with the width of the sliding back plate. The inner wall of the sliding groove is provided with a sliding slot. The upper and lower end faces of the sliding back plate are provided with sliding strips that are in clearance fit with the sliding slot. The right end of the mounting beam is closed by a closing block to achieve the closure of the sliding groove.

[0018] By creating a sliding groove, the mounting beam is slidably positioned on the back of the mounting beam. The sliding groove and sliding strip prevent the sliding back plate from coming out of the sliding groove, making the sliding more stable.

[0019] Furthermore, spring slots are provided on the end faces of the housing section and the sensing section, as well as on the end faces of the winding roller. The two ends of the return spring are respectively locked in the spring slots on both sides. By setting the spring slots, the two ends of the return spring are locked in the spring slots, which is simple in structure and easy to use.

[0020] Further specifying, the lifting assembly also includes a lifting motor, a gearbox, a rotating shaft, a left bearing housing, and a right bearing housing; the lifting motor and the gearbox are both fixedly mounted on the top surface of the mounting beam, the output shaft of the lifting motor extends into the gearbox and is fixedly connected to the drive gear of the gearbox, the two ends of the rotating shaft are respectively rotatably mounted on the left bearing housing and the right bearing housing, and the left end is fixedly connected to the output shaft of the gearbox through a coupling, and the winding roller is fixedly mounted on the rotating shaft between the left bearing housing and the right bearing housing.

[0021] Furthermore, the edge of the end face of the shell section that contacts the suspension line has a rounded corner; this rounded corner facilitates the suspension line to compress the shell section, making the compression process smoother.

[0022] Furthermore, the wheel surfaces of the left and right rollers are recessed with clamping grooves, and the grooves are covered with a deformation-functional anti-slip layer. The space enclosed between the two clamping grooves is interference-fitted with the outer diameter of the suspension line. This clamping groove design clamps and fixes the suspension line, making it more stable and preventing the suspension line from easily detaching from the left and right rollers, thus effectively extending the service life of the device.

[0023] Furthermore, the warning device also includes a counting component, which includes a Hall sensor, a magnet assembly, and a display. The Hall sensor is fixedly mounted on the top of the left bearing housing with its probe vertically aligned with the rotating shaft. The magnet assembly has at least three sets, which are arranged around the rotating shaft corresponding to the Hall sensor probe. Both the Hall sensor and the display are electrically connected to the controller.

[0024] By setting up a counting component, the Hall sensor can collect the number of rotations of the rotating shaft and then determine the length of the take-up or unwinding of the wire based on the circumference of the winding roller. This allows personnel to view the take-up or unwinding length on a display in real time, and the take-up length can be estimated before the alarm sounds, further improving the early warning effect.

[0025] Furthermore, the warning device also includes a safety component, which includes a wheel speed sensor and a sensing block. The sensing block is provided with several evenly spaced rings on the circumferential surface of the first coupling on the back of the sliding back plate. The wheel speed sensor is fixed on the back of the sliding back plate and the probe is aligned with the sensing block. The wheel speed sensor and the controller are electrically connected.

[0026] By installing a wheel speed sensor on the first coupling, the rotational speed of the first coupling can be detected. This can detect whether there is slippage between the right roller and the lifting line, which could cause the guide assembly to fail. If the wheel speed sensor detects a significant drop in the rotational speed of the first coupling, the controller will activate the alarm to remind the operator to stop the winding operation. This prevents the lifting line from piling up on the winding roller if the alarm cannot be triggered, which could lead to a collision between the hook and the installation beam.

[0027] The beneficial effects of this invention are as follows: by setting a guide component, the lifting line is guided by the movement of the lifting line during the lifting line reeling process, and the early warning component is squeezed during the guiding process to realize the alarm when the reeling is completed. This does not cause any pulling between the lifting line and the hook. The structure is simple and easy to use. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the internal structure of the present invention in the wire laying state;

[0029] Figure 2 This is a schematic diagram of the internal structure of the present invention in the coil-up state;

[0030] Figure 3 This is a schematic diagram of the first coupling.

[0031] Figure 4 This is a schematic diagram of the second coupling.

[0032] Figure 5 This is a rear view of the sliding back panel;

[0033] Figure 6 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0034] Figure 7 This is a schematic diagram of one end face of the sensing section of the pressure sensor;

[0035] Figure 8 This is a diagram showing the connection relationships of the electrical components in this invention.

[0036] The symbols for each component are as follows:

[0037] Mounting beam 1, sliding groove 11, sliding slot 111, sealing block 12, hoisting assembly 2, hook 21, hoisting line 22, lifting assembly 3, winding roller 31, lifting motor 32, gearbox 33, rotating shaft 34, left bearing seat 35, right bearing seat 36, coupling 37, guide assembly 4, sliding back plate 41, sliding strip 411, left roller 42, right roller 43, driving gear 44, reversing reduction gear 45, driven gear 46, sliding gear 47, sliding rack 48, first coupling 49, second coupling 410, early warning assembly 5, pressure sensor 51, housing section 511, sensing section 512, spring slot 513, return spring 52, controller 53, alarm 54, inner pressure ring 55, counting assembly 6, Hall sensor 61, magnet group 62, display 63, safety assembly 7, wheel speed sensor 71, sensing block 72. Detailed Implementation

[0038] The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0039] Example:

[0040] like Figures 1-8 As shown, a crane hook anti-collision warning device is disclosed. The crane includes a mounting beam 1, a hoisting assembly 2, and a lifting assembly 3. The warning device includes a guide assembly 4, a warning assembly 5, a counting assembly 6, and a safety assembly 7. The hoisting assembly 2 includes a hook 21 and a lifting line 22, with the hook 21 fixedly mounted at the bottom end of the lifting line 22.

[0041] The lifting assembly 3 includes a winding roller 31, a lifting motor 32, a gearbox 33, a rotating shaft 34, a left bearing seat 35, and a right bearing seat 36. The top end of the lifting wire 22 is fixedly connected to the left side of the winding roller 31, and the wire is wound from the left side of the winding roller 31 to the right side. The top and bottom surfaces of the mounting beam 1 are provided with through holes for the lifting wire 22 to pass through. The lifting motor 32 and the gearbox 33 are both fixedly mounted on the top surface of the mounting beam 1. The output shaft of the lifting motor 32 extends into the gearbox 33 and is fixedly connected to the drive gear 44 of the gearbox 33. The two ends of the rotating shaft 34 are rotatably mounted on the left bearing seat 35 and the right bearing seat 36, respectively, and the left end is fixedly connected to the output shaft of the gearbox 33 through a coupling 37. The winding roller 31 is fixedly mounted on the rotating shaft 34 between the left bearing seat 35 and the right bearing seat 36.

[0042] The guide assembly 4 is located inside the mounting beam 1 and is slidably frictionally connected to the suspension line 22. During the movement of the suspension line 22, the friction force provides power to the guide assembly 4, so that the winding roller 31 slides and guides the suspension line 22 through the guide assembly 4 to avoid the suspension line 22 from piling up or being difficult to unwind during winding and unwinding. The guide assembly 4 includes a sliding back plate 41, a left roller 42, a right roller 43, a drive gear 44, a reversing reduction gear 45, a driven gear 46, a sliding gear 47, and a sliding rack 48.

[0043] A sliding back plate 41 is horizontally slidably mounted on the back plate of the mounting beam 1. A sliding groove 11 extending through the right end of the mounting beam 1 is provided on its back side. The width of the sliding groove 11 is clearance-fitted with the width of the sliding back plate 41. A sliding slot 111 is provided on the inner wall of the sliding groove 11. Sliding strips 411 protrude from the upper and lower end faces of the sliding back plate 41 and are clearance-fitted with the sliding slots 111. The right end of the mounting beam 1 is closed by a closing block 12. A left roller 42 is rotatably mounted on the front side of the sliding back plate 41 via a rotating shaft. A right roller 43 is rotatably connected to the front side of the sliding back plate 41 via a first coupling 49. The wheel surfaces of the left roller 42 and right roller 43 are concavely provided with clamping grooves. The groove is covered with a deformation-functional anti-slip layer, and the space enclosed between the two clamping grooves is interference-fitted with the outer diameter of the suspension wire 22; the inner end of the first coupling 49 passes through the sliding back plate 41 and is located on the back of the sliding back plate 41; the reversing reduction gear 45 is also rotatably mounted on the back of the sliding back plate 41 via a rotating shaft and meshes with the driving gear 44; the driven gear 46 and the sliding gear 47 are rotatably mounted on the sliding back plate 41 via the second coupling 410, and the driven gear 46 meshes with the reversing reduction gear 45; the sliding rack 48 is fixedly mounted on the bottom surface of the mounting beam 1 and meshes with the sliding gear 47; and the sliding rack 48 is offset from the left roller 42 and the right roller 43 in the front-back direction.

[0044] The warning component 5 is slidably mounted on the winding roller 31 on one side of the winding direction of the suspended wire 22. During the winding process, the suspended wire 22 squeezes the warning component 5 until it is completely wound onto the winding roller 31, triggering the warning component 5 to issue an alarm signal. The warning component 5 includes a pressure sensor 51, a return spring 52, a controller 53, and an alarm 54. The pressure sensor 51 is generally in the shape of a stepped cylinder and is mounted on the winding roller 31. The pressure sensor 51 includes a large-diameter housing section 511 and a small-diameter sensing section 512. The edge of the end face of the housing section 511 that contacts the suspended wire 22 has rounded corners. One end of the return spring 52 is mounted on the winding roller 31. On the circumference of the sensing section 512, an inner pressure ring 55 is provided on the inner side of the baffle on the right side of the winding roller 31. The other end of the return spring 52 passes through the inner pressure ring 55. The end face of the housing section 511 connected to the sensing section 512 and the end face of the winding roller 31 are both provided with spring slots 513. The two ends of the return spring 52 are respectively locked in the spring slots 513 on both sides. The pressure sensor 51 and the controller 53 are connected by a wireless communication module. The alarm 54 and the controller 53 are electrically connected and integrated in the operator's room. When the suspension line 22 is completely retracted onto the winding roller 31, the sensing end face of the sensing section 512 and the inner pressure ring 55 abut against each other.

[0045] The counting assembly 6 includes a Hall sensor 61, a magnet assembly 62, and a display 63. The Hall sensor 61 is fixedly mounted on the top of the left bearing seat 35, with its probe vertically aligned with the rotating shaft 34. The magnet assembly 62 has at least three sets, which are arranged around the rotating shaft 34 corresponding to the probe of the Hall sensor 61. The Hall sensor 61 and the display 63 are both electrically connected to the controller 53.

[0046] The safety component 7 includes a wheel speed sensor 71 and a sensing block 72. The sensing block 72 is provided with several evenly spaced rings on the circumference of the first coupling 49 on the back of the sliding back plate 41. The wheel speed sensor 71 is fixed on the back of the sliding back plate 41 and the probe is aligned with the sensing block 72. The wheel speed sensor 71 and the controller 53 are electrically connected.

[0047] In this application, the pressure sensor 51 adopts an existing ring force sensor, and the power supply and wireless communication module are integrated in the housing section 511. The connection between the power supply, the wireless communication module and the sensing section 512 is also prior art, so it is not described in the text. The controller 53 also adopts the existing Holtek BA45F25762. Furthermore, the braking structure of the crane in this application has not been improved, and the existing braking structure can be directly adopted, so it is not described in the text.

[0048] By setting up a guide component 4 and an early warning component 5, when the lifting component 3 is winding up the suspended wire 22, the guide component 4 rises and comes into contact with the guide component 4, causing the guide component 4 to move on the mounting beam 1, thereby guiding the suspended wire 22. This ensures that the suspended wire 22 is evenly wound on the winding roller 31 during the winding process, preventing it from piling up in one place. The rising of the suspended wire 22 serves as the driving force for guiding the wire 22. The structure is simple and easy to use. By sliding the early warning component 5 on the winding roller 31 on the winding side, the suspended wire 22 is gradually guided by the guide component during the winding process. On the side where the guide warning component 5 is located, when the lifting line 22 contacts the warning component 5, the winding is ongoing. The lifting line 22 will gradually squeeze the warning component 5 to the side of the winding roller 31 until the lifting line 22 is completely retracted. At this time, the warning component 5 will issue an alarm signal to remind the operator to stop the winding operation. This effectively avoids the collision between the hook 21 and the mounting beam 1 during the winding process. Compared with the existing hook 21 anti-collision device, and with the addition of a damping mechanism to buffer the impact between the hook 21 and the mounting beam 1, it does not hinder the winding process at all, nor does it prevent the hook 21 from colliding with the mounting beam 1. The structure between the suspension lines 22 creates contact and influence without causing any pulling or obstruction to the suspension lines 22, thus enabling the early warning system for reeling in the line and improving its performance. By setting a sliding back plate 41, the left roller 42, right roller 43, drive gear 44, reversing reduction gear 45, driven gear 46, and sliding gear 47 are all mounted on the sliding back plate 41. The left roller 42 and right roller 43 clamp the suspension lines 22. When the suspension lines 22 are fully unloaded and being reeled in, the suspension lines 22 rise, causing the right roller 43 to rotate clockwise. The right roller 43 drives the drive gear through the first coupling 49. 44 rotates clockwise, driving the active gear 44 to rotate counterclockwise, which in turn drives the driven gear 46 to rotate clockwise. The driven gear 46 rotates clockwise and drives the sliding gear 47 to rotate clockwise via the second coupling 410. The sliding gear 47 rotates clockwise and moves to the right on the sliding rack 48, thereby driving the sliding back plate 41 to move to the right. This achieves the winding guidance of the suspended line 22 in the winding state. The same principle applies when winding, only in the opposite direction. The lifting and lowering of the suspended line 22 serves as the power source for guidance, eliminating the need for an additional power source and saving costs.The pressure sensor 51 within the warning assembly 5 acts as a stop for the retraction of the suspended wire 22. During retraction, the suspended wire 22 is guided by the guide assembly 4, gradually squeezing the housing section 511. This causes the housing section 511 to move the sensing section 512 to the right side of the winding roller 31 until the suspended wire 22 is completely retracted onto the winding roller 31. At this point, the sensing section 512 comes into contact with the inner pressure ring 55, and the pressure sensor 51 senses the pressure, sending a signal to the controller 53. The controller 53 then activates the alarm 54 to sound an alarm, reminding the operator to stop the wire retraction operation. This design of the warning assembly 5 prevents the suspended wire from being retracted. The pulling between hook 22 and hook 21 triggers an early warning. The two ends of return spring 52 are respectively engaged with the baffles of pressure sensor 51 and winding roller 31, preventing pressure sensor 51 from slipping out of return spring 52 during wire release and causing the sensing section 512 of pressure sensor 51 to fail to align and engage with return spring 52 the next time. By creating a sliding groove 11, mounting beam 1 is slidably positioned on its back. The sliding slot 111 and sliding strip 411 prevent sliding back plate 41 from dislodging from the sliding groove 11, ensuring more stable sliding. The spring slot 513 further secures the return spring 52. The two ends of the spring 52 are secured in the spring slots 513, resulting in a simple structure and convenient use. The rounded corners facilitate the compression of the cable 22 onto the housing section 511, making the compression process smoother. The clamping grooves securely hold the cable 22, ensuring stability and preventing it from detaching from the left roller 42 and right roller 43, effectively extending the device's lifespan. By incorporating the counting component 6, the Hall sensor 61 collects the number of rotations of the rotating shaft 34 and, based on the circumference of the winding roller 31, determines the length of the take-up or unwinding of the cable, allowing personnel to monitor the length on the display 63 in real time. The speed of the cable can be estimated before the alarm 54 sounds, further improving the early warning effect. A wheel speed sensor 71 installed on the first coupling 49 can detect the rotational speed of the first coupling 49, enabling detection of slippage between the right roller 43 and the cable 22, which could cause the guide assembly 4 to malfunction. If the wheel speed sensor 71 detects a significant decrease in the rotational speed of the first coupling 49, the controller 53 controls the alarm 54 to sound an alarm, reminding the operator to stop the cable winding operation. This prevents the cable 22 from piling up on the winding roller 31, thus avoiding the alarm and potential collision between the hook 21 and the mounting beam 1.

Claims

1. A crane hook anti-collision warning device, the crane including a mounting beam (1), a hoisting assembly (2) and a lifting assembly (3), the hoisting assembly (2) including a hook (21) and a lifting line (22), the hook (21) being fixedly disposed at the bottom end of the lifting line (22); the lifting assembly (3) being disposed on the mounting beam (1), the lifting assembly (3) including a winding roller (31), one end of the winding roller (31) being fixedly connected to the top of the lifting line (22), the lifting assembly (3) driving the winding roller (31) to rotate to retract and extend the lifting line (22), the top and bottom surfaces of the mounting beam (1) having through holes for the lifting line (22) to pass through; characterized in that, The early warning device includes: The guide assembly (4) is located inside the mounting beam (1) and is slidably and frictionally connected to the suspension line (22). During the movement of the suspension line (22), the friction force provides power to the guide assembly (4), so that the winding roller (31) slides and guides the suspension line (22) through the guide assembly (4) to avoid the suspension line (22) from piling up or being difficult to unwind during winding and unwinding. The warning component (5) is slidably disposed on the winding roller (31) on one side of the winding direction of the hanging wire (22). During the winding process, the hanging wire (22) squeezes the warning component (5) until the hanging wire (22) is completely wound onto the winding roller (31), triggering the warning component (5) to issue an alarm signal. The warning component (5) includes a pressure sensor (51), a return spring (52), a controller (53), and an alarm (54). The pressure sensor (51) is generally in the shape of a stepped cylinder and is installed on the winding roller (31). The pressure sensor (51) includes a large-diameter housing section (511) and a small-diameter sensing section (512). One end of the return spring (52) is installed on the circumference of the sensing section (512) and the end is locked on the housing section (511). An inner pressure ring (55) is provided on the inner side of the baffle on the right side of the winding roller (31). The other end of the return spring (52) is installed on the inner pressure ring (55) and the end is locked on the baffle on the right side of the winding roller (31). The pressure sensor (51) and the controller (53) are connected by a wireless communication module. The alarm (54) and the controller (53) are electrically connected and integrated in the operator's operating room. When the suspension line (22) is fully retracted onto the winding roller (31), the sensing end face of the sensing section (512) and the inner pressure ring (55) come into contact.

2. The crane hook anti-collision early warning device according to claim 1, characterized in that, The guide assembly (4) includes a sliding back plate (41), a left roller (42), a right roller (43), a drive gear (44), a reversing reduction gear (45), a driven gear (46), a sliding gear (47), and a sliding rack (48). The top end of the suspension line (22) is fixedly connected to the left side of the winding roller (31), and the winding is wound from the left side of the winding roller (31) to the right side. The sliding back plate (41) is horizontally slidably disposed on the back plate of the mounting beam (1). The left roller (42) is rotatably disposed on the front side of the sliding back plate (41) through a rotating shaft. The right roller (43) is rotatably connected to the front side of the sliding back plate (41) through a first coupling (49), and the gap between the left roller (42) and the right roller (43) is tightly fitted with the outer diameter of the suspension line (22). The wheel surfaces of the left roller (42) and the right roller (43) both have deformation functions. The inner end of the first coupling (49) passes through... The sliding back plate (41) is located on the back of the sliding back plate (41). The reversing reduction gear (45) is also rotatably disposed on the back of the sliding back plate (41) via a rotating shaft and meshes with the driving gear (44). The driven gear (46) and the sliding gear (47) are rotatably disposed on the sliding back plate (41) via a second coupling (410), and the driven gear (46) meshes with the reversing reduction gear (45). The sliding rack (48) is fixedly disposed on the bottom surface of the mounting beam (1) and meshes with the sliding gear (47). The sliding rack (48) is offset from the left roller (42) and the right roller (43) in the front-back direction.

3. The crane hook anti-collision early warning device according to claim 2, characterized in that, The mounting beam (1) has a sliding groove (11) extending through its right end on its back side. The width of the sliding groove (11) and the width of the sliding back plate (41) are fitted with a clearance. The inner wall of the sliding groove (11) has a sliding slot (111). The upper and lower end faces of the sliding back plate (41) are provided with sliding strips (411) that are fitted with the sliding slot (111) with a clearance. The right end of the mounting beam (1) is closed by a closing block (12) to close the sliding groove (11).

4. The crane hook anti-collision early warning device according to claim 2, characterized in that, Spring slots (513) are provided on the end face of the housing section (511) connected to the sensing section (512) and the end face of the winding roller (31). The two ends of the return spring (52) are respectively locked in the spring slots (513) on both sides.

5. The crane hook anti-collision early warning device according to claim 2, characterized in that, The lifting assembly (3) also includes a lifting motor (32), a gearbox (33), a rotating shaft (34), a left bearing seat (35), and a right bearing seat (36); the lifting motor (32) and the gearbox (33) are both fixedly mounted on the top surface of the mounting beam (1). The output shaft of the lifting motor (32) extends into the gearbox (33) and is fixedly connected to the drive gear (44) of the gearbox (33). The two ends of the rotating shaft (34) are respectively rotatably mounted on the left bearing seat (35) and the right bearing seat (36), and the left end is fixedly connected to the output shaft of the gearbox (33) through a coupling (37). The winding roller (31) is fixedly mounted on the rotating shaft (34) between the left bearing seat (35) and the right bearing seat (36).

6. The crane hook anti-collision early warning device according to claim 4, characterized in that, The edge of the end face of the housing segment (511) that contacts the suspension line (22) has a rounded corner.

7. The crane hook anti-collision early warning device according to claim 6, characterized in that, The wheel surfaces of the left roller (42) and the right roller (43) are recessed and have grooves. The grooves are covered with a non-slip layer with deformation function. The space between the two grooves is interference-fitted with the outer diameter of the suspension line (22).

8. The crane hook anti-collision early warning device according to claim 5, characterized in that, The warning device also includes a counting component (6), which includes a Hall sensor (61), a magnet assembly (62), and a display (63). The Hall sensor (61) is fixed on the top of the left bearing seat (35) and its probe is vertically aligned with the rotating shaft (34). The magnet assembly (62) has at least three sets and is arranged around the rotating shaft (34) corresponding to the probe of the Hall sensor (61). The Hall sensor (61) and the display (63) are both electrically connected to the controller (53).

9. The crane hook anti-collision early warning device according to claim 8, characterized in that, The warning device also includes a safety component (7), which includes a wheel speed sensor (71) and a sensing block (72). The sensing block (72) is provided with several evenly spaced rings on the circumference of the first coupling (49) on the back of the sliding back plate (41). The wheel speed sensor (71) is fixed on the back of the sliding back plate (41) and the probe is aligned with the sensing block (72). The wheel speed sensor (71) and the controller (53) are electrically connected.

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