Winding drum rope pressing and groove disengaging detection device

Abstract

The utility model relates to the technical field of cranes, in particular to a winding drum rope pressing and groove disengaging detection device which comprises a winding drum and a stand column arranged on one side of the winding drum, the stand column is located on one side of a steel wire rope of the winding drum, the top of the stand column is rotationally connected with one end of a roller frame through a pin shaft, and the other end of the roller frame extends towards the winding drum and is provided with a roller. Wherein the roller is located above the steel wire rope outlet position of the reel; the supporting rod movably penetrates through the roller frame, the lower end of the supporting rod is fixedly connected to the mounting base, and a supporting part is arranged at the position, below the roller frame, of a rod body of the supporting rod, so that a gap exists between the roller and a steel wire rope wound around the winding drum; a compression spring is arranged at the position, above the roller frame, of the rod body of the supporting rod in a sleeving manner; due to the existence of the gap between the roller and the steel wire rope wound on the winding drum, abrasion caused by friction between the roller and the steel wire rope during normal operation of the crane can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a drum rope pressing and groove disengagement detection device. Background Art

[0002] With the development of the domestic industrial economy, factory production lines have higher and higher requirements for the safety and efficiency of cranes. In the daily production process, workers may operate cranes crookedly, operate large and small trolleys before the hoisted objects are stable, and other situations that do not follow the rules and regulations. The wire rope on the drum often slips out of the groove, causing the wire rope on the drum to become tangled, the wire rope wear increases, the life of the wire rope is shortened, and more seriously, the hoisted objects may suddenly fall off, seriously affecting the safety of personnel and posing a huge hidden danger to the operation of the crane.

[0003] The existing Chinese patent with publication number CN206033096U discloses a spring pressure roller type rope-laying device, which is in a cross structure with a support rod and a frame. A pressure roller is provided at the inner end of the support rod, and a spring is provided at the outer end and the top of the frame. The pressure roller is used to press the wire rope tightly through the spring, and a limit device connected to the outer end of the support rod is arranged on the outside of the frame to prevent the wire rope from falling out of the groove. Although the device can ensure that the wire rope does not fall out of the groove, it still has the following shortcomings: 1. The pressure roller always squeezes the wire rope, and long-term operation will cause wear between the pressure roller and the wire rope; 2. The support rod and the frame with a cross structure are convenient for repairing the spring, but the structure is not compact enough.

[0004] Therefore, we designed a drum rope pressing and groove slipping detection device. Utility Model Content

[0005] In order to overcome the deficiencies in the background technology, the utility model discloses a drum rope pressing and groove disengagement detection device.

[0006] In order to achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0007] A drum rope pressing and groove-out detection device comprises a drum, and also comprises:

[0008] A column, arranged on one side of the reel;

[0009] A roller frame, one end of which is rotatably connected to the top of the column through a pin, and the other end of which extends toward the reel and is provided with a roller;

[0010] A mounting seat, arranged at a position where the column is located below the roller frame;

[0011] The support rod movably passes through the roller frame, and the lower end is fixed to the mounting seat. The support rod body is provided with a support portion at a position below the roller frame so that there is a gap between the roller and the wire rope; the support rod body is provided with a compression spring at a position above the roller frame.

[0012] Preferably, the gap between the roller and the wire rope is 3-5 mm.

[0013] Preferably, the support rod is a screw rod, and the supporting portion is a nut matching the support rod.

[0014] Preferably, an alarm switch is provided on the top of the mounting seat, and a trigger portion of the alarm switch contacts the bottom surface of the roller frame and is in a closed state, so that after the roller frame rotates upward by a certain angle, the alarm switch changes from a closed state to an open state.

[0015] Preferably, the roller frame is provided with a pressure rod for pressing down the triggering part of the alarm switch.

[0016] Preferably, the inclination angle of the line connecting the center of the roller and the center of the reel is 40 to 50 degrees.

[0017] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0018] 1. Due to the gap between the roller and the wire rope wound on the drum, it can prevent the roller and the wire rope from rubbing and wearing during normal operation of the crane;

[0019] 2. Since the column and the roller frame are assembled into a V-shaped structure, compared with the cross structure in the prior art, the space on the side of the column away from the reel can be saved, making the device structure more compact, and the compression spring is located above the roller frame, which can still achieve the effect of convenient adjustment and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a left view of the utility model;

[0022] Figure 3 for Figure 1 A magnified view of the part I in the figure.

[0023] In the figure: 1, reel; 2, column; 3, roller frame; 4, roller; 5, mounting seat; 6, support rod; 61, support part; 7, compression spring; 8, alarm switch; 9, pressure rod. DETAILED DESCRIPTION

[0024] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. to indicate directions or positional relationships, they only correspond to the drawings of the present application, in order to facilitate the description of the present invention; it should be understood that if there are terms such as "end", "side", "end part", "lateral", "lateral", "transverse", "longitudinal", etc. to indicate directions or positional relationships, they only correspond to the length and width of the corresponding parts, that is, "end part" indicates the head and tail areas in the length direction of the corresponding part, and "side part" indicates the head and tail areas in the width direction of the corresponding part; this is for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction.

[0025] Embodiment 1, in combination with the attached Figure 1-3 A drum rope pressure and groove slip detection device includes a drum and a column arranged on one side of the drum. Specifically, the column is located on the side of the drum where the wire rope comes out. The top of the column is rotatably connected to one end of a roller frame through a pin shaft. The other end of the roller frame extends toward the drum and is provided with a roller, wherein the roller is located above the position where the wire rope comes out of the drum.

[0026] The column is provided with a mounting seat at a position below the roller frame.

[0027] The support rod movably passes through the roller frame, and the lower end is fixed to the mounting seat. A support portion is provided at a position of the support rod body below the roller frame so that there is a gap between the roller and the wire rope wound on the drum; a compression spring is sleeved at a position of the support rod body above the roller frame.

[0028] It should be noted that the gap between the roller and the steel wire rope wound on the drum is the gap between the roller and the normally wound steel wire rope.

[0029] The existence of a gap between the roller and the wire rope wound on the drum can prevent friction and wear between the roller and the wire rope during normal operation of the crane.

[0030] According to needs, the inclination angle of the line connecting the center of the roller and the center of the reel is 40 to 50 degrees, preferably 45 degrees.

[0031] In order to conveniently control and adjust the gap between the roller and the steel wire rope wound on the drum, preferably, the support rod is a screw rod, and the support part is a nut matched with the support rod, that is, by rotating the nut, the nut moves axially to complete the adjustment of the lower limit angle of the roller frame, thereby achieving the function of adjusting and controlling the gap between the roller and the steel wire rope wound on the drum. Preferably, the gap between the roller and the steel wire rope wound on the drum is 3-5 mm, so that the gap is adjusted based on 4 mm as the benchmark, and it does not exceed the range of 3-5 mm.

[0032] According to needs, a nut for limiting the position of the upper end of the compression spring is provided at the top of the support rod, and the force with which the compression spring presses the roller frame can be adjusted by adjusting the nut.

[0033] It should be noted that the roller frame is provided with a round hole or a waist-shaped hole for the support rod to movably pass through, preferably a waist-shaped hole.

[0034] Since the column and the roller frame form a V-shaped structure after assembly, compared with the cross structure in the prior art, the space on the side of the column away from the reel can be saved, making the device structure more compact, and the compression spring is located above the roller frame, which can still achieve the effect of convenient adjustment and maintenance.

[0035] Embodiment 2, combined with the attached Figure 3 , a drum rope pressure and groove derailment detection device, based on the first embodiment, an alarm switch is provided on the top of the mounting seat, and the alarm switch trigger part is in contact with the bottom surface of the roller frame and is in a closed state, so that after the roller frame rotates upward by a certain angle, the alarm switch changes from a closed state to an open state.

[0036] According to the needs, the roller frame is provided with a pressure rod for pressing down the triggering part of the alarm switch. Preferably, the pressure rod is also a screw rod, and its position is fixed by two nuts located above and below the roller frame, so that the position of the pressure rod can be adjusted by adjusting the position of the nuts to ensure that the alarm switch can be changed from a closed state to an open state before the wire rope is out of the groove.

[0037] It should be noted that: when the alarm switch is in the open state, an alarm signal is issued. The alarm switch adopts the existing technology and its structure and working principle are not described again here.

[0038] The working principle is: when the wire rope jumps out of the groove, the roller frame is affected by the wire rope that has fallen out of the groove and flips upward. At this time, the compression spring above the roller frame squeezes the roller frame downward, thereby pressing the wire rope to prevent it from falling out of the groove. When the lateral force of the workers' crooked pulling and diagonal lifting is large, the roller frame is affected by the wire rope that has fallen out of the groove and flips upward to a certain angle, which exceeds the alarm switch stroke. The alarm switch triggers a power outage. At this time, the reel only allows the wire rope to be lowered and then rewound until the alarm switch is reset.

[0039] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the present invention.

Claims

1. A drum rope pressing and groove slipping detection device, comprising a drum, characterized in that: Also includes: A column, arranged on one side of the reel; A roller frame, one end of which is rotatably connected to the top of the column through a pin shaft, and the other end of which extends toward the winding drum and is provided with a roller; A mounting seat, arranged at a position where the column is located below the roller frame; A support rod movably passes through the roller frame, and the lower end is fixed to the mounting seat. A support portion is provided at a position of the support rod body below the roller frame so that there is a gap between the roller and the wire rope wound on the drum; a compression spring is sleeved at a position of the support rod body above the roller frame.

2. The drum rope pressing and groove disengagement detection device according to claim 1, characterized in that: The gap between the roller and the steel wire rope wound on the drum is 3-5 mm.

3. The drum rope pressing and groove disengagement detection device according to claim 1, characterized in that: The support rod is a screw rod, and the support part is a nut matched with the support rod.

4. The drum rope pressing and groove disengagement detection device according to claim 1, characterized in that: An alarm switch is arranged on the top of the mounting seat, and a triggering part of the alarm switch contacts the bottom surface of the roller frame and is in a closed state, so that after the roller frame rotates upwards by a certain angle, the alarm switch changes from a closed state to an open state.

5. The drum rope pressing and groove disengagement detection device according to claim 4, characterized in that: The roller frame is provided with a pressure rod for pressing down the triggering part of the alarm switch.

6. The drum rope pressing and groove disengagement detection device according to claim 1, characterized in that: The inclination angle of the line connecting the center of the roller and the center of the reel is 40 to 50 degrees.

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