Explosion-proof crane steel wire rope pressing device

Abstract

The utility model provides a kind of anti-explosion crane steel wire rope pressing device, including support, round steel, sleeve pipe, rotary plate, limit alarm and self-resetting movable rod;The middle part of rotary plate is rotatably installed on support, round steel is installed in the lower part of rotary plate, and the upper part of rotary plate is hinged with self-resetting movable rod, so that self-resetting movable rod and round steel form lever structure based on rotary plate;Self-resetting movable rod is installed horizontally on support, limit alarm is installed in the active stroke of self-resetting movable rod, round steel drives self-resetting movable rod to move to approach and trigger limit alarm by rotary plate, and the self-resetting mechanism of self-resetting movable rod is used to drive self-resetting movable rod away from limit alarm;Sleeve pipe is sleeved on the surface of round steel, for contact with reel rope pressing, and transfer from reel rope pressing loosening caused by jumping pressure.The device has the function of adjusting compression force, avoiding overpressure and loosening, reducing the abrasion rate of steel wire rope while improving the reliability of loosening.

Description

Technical Field

[0001] This utility model relates to the field of hoisting technology, specifically to an explosion-proof crane wire rope pressing device. Background Technology

[0002] The crane's rope pressing device is a critical link in the safety chain. Its performance directly affects the reliability of the equipment, the life of the rope, and the operating cost. Traditional fixed pressure roller devices lack real-time adjustment capabilities and are prone to causing wear on the wire rope.

[0003] In recent years, the industry has paid attention to this issue in some designs. For example, in the technical solution of the patent application number 202221948392.0 and the utility model name: a rope pressing wheel device for limiting the wire rope of a winch, the rope pressing wheel assembly is used to convert the tension into pressure on the wire rope. The elastic tension is introduced to adjust the pressure and realize the self-adjustment of the elasticity.

[0004] The device works well under low load conditions, but under high load conditions, the tension in the wire rope is too great, and the pressure on the wire rope will also increase accordingly, which can easily lead to the aforementioned problems. Its adjustment capability is relatively limited.

[0005] For the reasons mentioned above, further improvements are needed to the existing rope clamping device to make its clamping force adjustable, avoid over-pressure and over-loosening, reduce the wear rate of the wire rope, and improve the reliability of release. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing an explosion-proof crane wire rope clamping device that allows for adjustable clamping force, prevents over-clamping and loosening, reduces wire rope wear, and improves the reliability of loosening and detachment.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: an explosion-proof crane wire rope pressing device, comprising a bracket, round steel, sleeve, rotating plate, limit alarm and self-resetting movable rod; The middle part of the rotating plate is rotatably mounted on the bracket, the lower part of the rotating plate is mounted on the round steel, and the upper part of the rotating plate is hinged to the self-resetting movable rod, so that the self-resetting movable rod and the round steel form a lever structure based on the rotating plate; The self-resetting movable rod is horizontally movable and mounted on the bracket. The limit alarm is installed within the active stroke of the self-resetting movable rod. The round steel drives the self-resetting movable rod to move through the rotating plate to approach and trigger the limit alarm. The self-resetting mechanism of the self-resetting movable rod itself is used to drive the self-resetting movable rod away from the limit alarm. The sleeve is fitted onto the surface of the round steel and is used to contact the drum rope pressing mechanism to transmit the jumping pressure caused by the loosening of the drum rope pressing mechanism.

[0008] Preferably, the length of the sleeve is adapted to the rope pressing area in the rope pressing drum.

[0009] Preferably, there are multiple sleeves, and the spacing between the sleeves is adapted to the distance between adjacent fixed loops in the drum pressing rope.

[0010] Preferably, the bracket includes a mounting base and a rope pressing frame, the rope pressing frame being bolted to the mounting base.

[0011] Preferably, the top of the rope pressing frame is provided with a rectangular tube, and the two ends of the rectangular tube extend horizontally forward to provide cantilever arms, and the two ends of the middle part of the rotating plate are respectively rotatably connected to the cantilever arms at both ends.

[0012] Preferably, the limit alarm is installed at the far end of the cantilever.

[0013] Preferably, the self-resetting movable rod includes a push rod, a nut, a spring plate, a compression spring, a pin plate, and a movable pin; The pin plate is located at the top of the rectangular tube, and the movable pin is rotatably mounted on the pin plate. The movable pin has a movable hole for the top rod to pass through. One end of the push rod is limited to one side of the movable hole by a nut, and is used to hinge with the rotating plate through the connecting plate; the other end of the push rod is fitted with a spring plate, a compression spring, a spring plate and a nut in sequence from the inside to the outside. The spring plate located on the inside abuts against or is fixed to the pin plate. The push rod is kept self-stable by adjusting the nuts at both ends. The distal end of the top rod or the distal end of the connecting plate is used to contact the limit alarm.

[0014] Preferably, the explosion-proof crane wire rope pressing devices are arranged in pairs, with one explosion-proof crane wire rope pressing device located on one side of the drum and the other explosion-proof crane wire rope pressing device located on the other side of the drum.

[0015] Preferably, one of the explosion-proof crane wire rope pressing devices is located above the drum, and the other explosion-proof crane wire rope pressing device is located below the drum.

[0016] Preferably, the rotating plate is L-shaped.

[0017] This utility model has substantial features and advancements compared to existing technologies. Specifically, it utilizes a compression spring as the basis for adjusting the clamping force, and uses the reset capability of the self-resetting movable rod to meet the requirement of adjustable clamping force. It also uses a mechanism to detect jumping pressure to meet the requirement of loosening alarm. Compared with traditional fixed rope clamping devices, its adaptability and flexibility are greatly enhanced. Through flexible adjustment capabilities, it can reduce the wear rate of steel wire rope and improve the reliability of loosening. Attached Figure Description

[0018] Figure 1 This is a side view of an explosion-proof crane wire rope pressing device according to this utility model.

[0019] Figure 2 This is a top view of an explosion-proof crane wire rope pressing device according to this utility model.

[0020] Figure 3 This is a partial schematic diagram of a wire rope pressing device for an explosion-proof crane according to this utility model, shown in the side view.

[0021] Figure 4 This is a top view of a partial schematic diagram of an explosion-proof crane wire rope pressing device according to this utility model.

[0022] In the diagram: 1. Bracket; 2. Round steel; 3. Sleeve; 4. Rotating plate; 5. Limit alarm; 6. Drum; 7. Explosion-proof crane wire rope pressing device; 11. Mounting base; 12. Rope pressing frame; 13. Rectangular tube; 14. Cantilever; 21. Top rod; 22. Nut; 23. Spring plate; 24. Compression spring; 25. Pin plate; 26. Movable pin; 27. Connecting plate. Detailed Implementation

[0023] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0024] like Figures 1-4 As shown, an explosion-proof crane wire rope pressing device includes a bracket 1, a round steel bar 2, a sleeve 3, a rotating plate 4, a limit alarm 5, and a self-resetting movable rod.

[0025] In this embodiment, the bracket 1 includes a mounting base 11 and a rope pressing frame 12. The rope pressing frame 12 is bolted to the mounting base 11. In specific applications, to meet the complex arrangement of the container gantry crane drum in port machinery and for easy maintenance, the mounting base 11 can be directly pre-embedded and fixed at a specific location. The rope pressing frame 12 and other mechanisms arranged on it can be temporarily assembled with the mounting base 11 as accessories, which can ensure the installation stability of the entire explosion-proof crane wire rope pressing device.

[0026] The rotating plate 4 is rotatably mounted on the bracket 1 at its middle part. Specifically, in this embodiment, a rectangular tube 13 is provided at the top of the rope pressing frame 12, and cantilever 14 is provided at both ends of the rectangular tube 13 extending horizontally forward. The two ends of the middle part of the rotating plate 4 are rotatably connected to the cantilever 14 at both ends. The rotating plate 4 is L-shaped as a whole. The limit alarm 5 is installed at the far end of the cantilever 14.

[0027] The round steel 2 is installed on the lower part of the rotating plate 4, and the upper part of the rotating plate 4 is hinged to the self-resetting movable rod, so that the self-resetting movable rod and the round steel 2 form a lever structure based on the rotating plate 4.

[0028] The self-resetting movable rod is horizontally mounted on the bracket 1. The limit alarm 5 is installed within the active stroke of the self-resetting movable rod. The round steel 2 drives the self-resetting movable rod to move through the rotating plate 4 to approach and trigger the limit alarm 5. The self-resetting mechanism of the self-resetting movable rod itself is used to drive the self-resetting movable rod away from the limit alarm 5, and at the same time, it applies a clamping force to the side of the round steel 2.

[0029] In this embodiment, the self-resetting movable rod includes a top rod 21, a nut 22, a spring plate 23, a compression spring 24, a pin plate 25, and a movable pin 26.

[0030] The pin plate 25 is disposed at the top end of the rectangular tube 13, and the movable pin 26 is rotatably mounted on the pin plate 25. The movable pin 26 has a movable hole for passing through the top rod 21.

[0031] One end of the push rod 21 is limited to one side of the movable hole by a nut 22, and is used to hinge with the rotating plate 4 through the connecting plate 27; the other end of the push rod 21 is fitted with a spring plate 23, a compression spring 24, a spring plate 23 and a nut 22 in sequence from the inside to the outside. The spring plate 23 located on the inner side abuts or is fixed on the pin plate 25. By adjusting the nuts 22 at both ends, the compression amount of the compression spring 24 can be adjusted, that is, the clamping force on the round steel side can be adjusted, while the push rod maintains self-stability.

[0032] The distal end of the top rod 21 or the distal end of the connecting plate 27 is used to contact the limit alarm 5.

[0033] The sleeve 3 is fitted onto the surface of the round steel 2 and is used to contact the drum rope pressing to transmit the jumping pressure caused by the loosening of the drum rope. In this embodiment, the length of the sleeve 3 is adapted to the rope pressing area in the drum rope pressing. There are multiple sleeves 3, and the spacing between the sleeves 3 is adapted to the distance between adjacent fixed rings in the drum rope pressing.

[0034] In practical applications, the explosion-proof crane wire rope pressing devices 7 are arranged in pairs. One explosion-proof crane wire rope pressing device is located on one side of the drum 6, and the other explosion-proof crane wire rope pressing device is located on the other side of the drum. One explosion-proof crane wire rope pressing device is located above the drum, and the other explosion-proof crane wire rope pressing device is located below the drum, so as to fully press the drum 6 and monitor the early warning.

[0035] Technical principle explanation: When the wire rope on the drum 6 comes off, it will cause the drum to rotate and jump locally. The surface of the wire rope will touch the sleeve 3. After the sleeve 3 is subjected to force, it will drive the top rod 21 to move to the right through the rotating plate 4, which will touch the limit alarm 5 and trigger the alarm.

[0036] The preload of the compression spring 24 corresponding to the push rod 21 is adjusted by adjusting the nuts at both ends, which can change the clamping force on both sides of the sleeve 3.

[0037] Finally, it should be noted that: the preferred embodiments of this patent have been described in detail above, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A wire rope pressing device for explosion-proof cranes, characterized in that: Includes brackets, round steel bars, sleeves, rotating plates, limit alarms, and self-resetting movable rods; The middle part of the rotating plate is rotatably mounted on the bracket, the lower part of the rotating plate is mounted on the round steel, and the upper part of the rotating plate is hinged to the self-resetting movable rod, so that the self-resetting movable rod and the round steel form a lever structure based on the rotating plate; The self-resetting movable rod is horizontally movable and mounted on the bracket. The limit alarm is installed within the active stroke of the self-resetting movable rod. The round steel drives the self-resetting movable rod to move through the rotating plate to approach and trigger the limit alarm. The self-resetting mechanism of the self-resetting movable rod itself is used to drive the self-resetting movable rod away from the limit alarm. The sleeve is fitted onto the surface of the round steel and is used to contact the drum rope pressing mechanism to transmit the jumping pressure caused by the loosening of the drum rope pressing mechanism.

2. The explosion-proof crane wire rope pressing device according to claim 1, characterized in that: The length of the sleeve is adapted to the rope pressing area in the drum rope pressing.

3. The explosion-proof crane wire rope pressing device according to claim 1, characterized in that: There are multiple sleeves, and the spacing between the sleeves is adapted to the distance between adjacent fixed loops in the drum pressing rope.

4. The explosion-proof crane wire rope pressing device according to claim 1, characterized in that: The bracket includes a mounting base and a rope pressing frame, which is bolted to the mounting base.

5. The explosion-proof crane wire rope pressing device according to claim 4, characterized in that: The top of the rope pressing frame is provided with a rectangular tube, and the two ends of the rectangular tube extend horizontally forward to provide cantilever arms. The two ends of the middle part of the rotating plate are respectively rotatably connected to the cantilever arms at both ends.

6. The explosion-proof crane wire rope pressing device according to claim 5, characterized in that: The limit alarm is installed at the far end of the cantilever.

7. The explosion-proof crane wire rope pressing device according to claim 6, characterized in that: The self-resetting movable rod includes a push rod, a nut, a spring plate, a compression spring, a pin plate, and a movable pin; The pin plate is located at the top of the rectangular tube, and the movable pin is rotatably mounted on the pin plate. The movable pin has a movable hole for the top rod to pass through. One end of the push rod is limited to one side of the movable hole by a nut, and is used to hinge with the rotating plate through the connecting plate; the other end of the push rod is fitted with a spring plate, a compression spring, a spring plate and a nut in sequence from the inside to the outside. The spring plate located on the inside abuts against or is fixed to the pin plate. The push rod is kept self-stable by adjusting the nuts at both ends. The distal end of the top rod or the distal end of the connecting plate is used to contact the limit alarm.

8. The explosion-proof crane wire rope pressing device according to claim 7, characterized in that: The explosion-proof crane wire rope pressing devices are arranged in pairs, with one explosion-proof crane wire rope pressing device located on one side of the drum and the other explosion-proof crane wire rope pressing device located on the other side of the drum.

9. The explosion-proof crane wire rope pressing device according to claim 8, characterized in that: One of the explosion-proof crane wire rope pressing devices is located above the drum, and the other explosion-proof crane wire rope pressing device is located below the drum.

10. The explosion-proof crane wire rope pressing device according to claim 9, characterized in that: The rotating plate is L-shaped.

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