Rope loosening monitoring and protecting device for pitching steel wire rope of shoreside bridge crane

Abstract

The utility model relates to a slack rope monitoring and protecting device for a pitching steel wire rope of a shoreside bridge crane. The slack rope monitoring and protecting device comprises a supporting structure (1), one end of the steel wire rope displacement bearing structure (2) is rotationally supported on the supporting structure (1), and the other end of the steel wire rope displacement bearing structure (2) is arranged close to a shoreside bridge crane pitching steel wire rope; and the displacement monitoring structure (3) is arranged close to the steel wire rope displacement bearing structure (2) and is used for monitoring whether the other end of the steel wire rope displacement bearing structure (2) displaces due to looseness of the pitching steel wire rope or not, and if yes, an alarm signal is sent out. According to the scheme provided by the utility model, the problem that no rope loosening monitoring protection device is used for prevention when the pitching front girder is lowered by the shoreside bridge crane is effectively solved, the accurate monitoring on the pitching steel wire rope can be ensured, and the safety of a pitching mechanism during operation is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring and protecting the pitching wire rope of a shore bridge crane, in particular to a monitoring and protecting device for monitoring the loosening of the pitching wire rope of a shore bridge crane. Background Art

[0002] As one of the four major mechanisms of a shore crane, the safety performance of the luffing mechanism has attracted much attention. If its safety protection fails, it may cause devastating losses to the shore crane. The luffing wire rope is the key node for the movement of the luffing mechanism, so its fault safety protection is of utmost importance. The loose luffing wire rope failure is the most common type of luffing wire rope failure.

[0003] If the loose pitch wire rope fault is not detected in the initial stage and effective protective actions are not taken, and it is allowed to develop further, the pitch wire rope, pitch drum and pitch reduction box may be damaged at the least, or the girder of the shore crane may fall, the whole machine may overturn, and other serious damage safety accidents may occur at the worst. The consequences are unimaginable. At present, there is a lack of reliable detection methods for the loose pitch wire rope fault to effectively monitor, prevent and protect it. Utility Model Content

[0004] The utility model aims to solve at least one technical problem in the background technology and provide a monitoring and protection device for the loosening of the pitching wire rope of a shore bridge crane.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a monitoring and protection device for the loosening of the pitching wire rope of a shore bridge crane, comprising:

[0006] Support structure;

[0007] A wire rope displacement receiving structure, one end of which is rotatably supported on the supporting structure and the other end of which is arranged near the pitching wire rope of the shore bridge crane;

[0008] The displacement monitoring structure is arranged adjacent to the wire rope displacement receiving structure to monitor whether the other end of the wire rope displacement receiving structure is displaced due to the loosening of the pitch wire rope, and if so, an alarm signal is issued.

[0009] According to one aspect of the utility model, the support structure includes: a support seat, a support frame, and a limit rod;

[0010] One end of the support frame is supported on the support seat, and the other end is rotatably connected to the wire rope displacement receiving structure;

[0011] The limit rod is arranged on the side wall of the support seat and is located at one side of the bottom of the support frame away from the other end of the wire rope displacement receiving structure, and is used to limit the movement range of the wire rope displacement receiving structure;

[0012] When the end of the one end of the wire rope displacement receiving structure overlaps the limit rod, the distance between the other end of the wire rope displacement receiving structure and the pitch wire rope is the smallest, and at this time, the displacement monitoring structure is aligned with the other end, and the monitoring determines that the other end has not been displaced;

[0013] When the pitch wire rope loosens and causes the other end to displace, the end of one end detaches from the limit rod. At this time, the displacement monitoring structure and the other end are in a non-aligned state, and the other end is monitored and judged to be displaced, and an alarm is issued.

[0014] According to one aspect of the utility model, the wire rope displacement receiving structure comprises: a rotation support end and an abutment displacement end;

[0015] The rotating support end and the pitching wire rope are arranged at intervals along the same direction;

[0016] One end of the abutment displacement end is vertically supported at the end of the rotation support end, and is spaced apart from the pitch wire rope and arranged vertically in space;

[0017] The rotating support end comprises: a horizontal portion and an inclined portion;

[0018] One end of the horizontal portion is connected to the abutment displacement end, and the other end is rotatably supported on the support frame;

[0019] One end of the inclined portion is fixedly connected to the other end of the horizontal portion, and the other end overlaps or moves away from the limiting rod according to the position change of the abutting displacement end.

[0020] According to one aspect of the utility model, a counterweight block is provided on the other end of the inclined portion.

[0021] According to one aspect of the utility model, the displacement monitoring structure includes: a bracket, a laser sensor switch and a reflective plate;

[0022] The bracket is supported on the support seat and is located on a side of the horizontal portion away from the abutting displacement end;

[0023] The laser sensor switch is arranged on the bracket and is arranged in the direction of the abutment displacement end, and is located on the same straight line as the axis of the abutment displacement end that is not displaced due to the loosening of the pitch wire rope;

[0024] The reflective plate is arranged at one end of the abutting displacement end facing the laser sensor switch.

[0025] According to one solution of the utility model, a monitoring and protection device for the loosening of the pitching wire rope of a shore bridge crane includes: a supporting structure; a wire rope displacement receiving structure, one end of which is rotatably supported on the supporting structure, and the other end is arranged near the pitching wire rope of the shore bridge crane; a displacement monitoring structure, which is arranged near the wire rope displacement receiving structure, and monitors whether the other end of the wire rope displacement receiving structure is displaced due to the loosening of the pitching wire rope, and if so, an alarm signal is issued. With such an arrangement, the wire rope displacement receiving structure can be supported by the supporting structure, so that the entire wire rope displacement receiving structure can perform longitudinal rotational movement on one side of the supporting structure. Specifically, when the pitching wire rope is loose, it will touch one end of the displacement receiving structure, and one end of the displacement receiving structure will move downward after being subjected to pressure. At this time, when the displacement monitoring structure detects that the end of the displacement receiving structure is displaced, it determines that the pitching wire rope is loose, and then an alarm is issued for maintenance.

[0026] According to one scheme of the utility model, the support structure includes: a support seat, a support frame, and a limit rod; one end of the support frame is supported on the support seat, and the other end is rotatably connected with the wire rope displacement receiving structure; the limit rod is arranged on the side wall of the support seat, and is located at the bottom of the support frame on the side away from the other end of the wire rope displacement receiving structure, and is used to limit the movement range of the wire rope displacement receiving structure; when the end of one end of the wire rope displacement receiving structure overlaps with the limit rod, the distance between the other end of the wire rope displacement receiving structure and the pitch wire rope is the smallest, at this time the displacement monitoring structure is aligned with the other end, and the monitoring determines that the other end has not been displaced; when the pitch wire rope is loosened and the other end is displaced, the end of one end is separated from the limit rod, at this time the displacement monitoring structure is in a non-aligned state with the other end, the monitoring determines that the other end has been displaced, and an alarm is issued. In this way, the support seat and the support frame can form a basic support for the wire rope displacement receiving structure, ensuring that the wire rope displacement receiving structure can form a stable and reliable support and can be rotated under force. The rotation range of the wire rope displacement receiving structure can be limited by the limit rod, so that when the wire rope displacement receiving structure is not subjected to the pressure of the wire rope, the other end of the wire rope displacement receiving structure can be close to the wire rope, and one end is overlapped on the limit rod. When subjected to pressure, one end of the wire rope displacement receiving structure moves upward away from the limit rod, while the other end is squeezed downward by the wire rope.

[0027] According to one solution of the utility model, a counterweight is provided on the other end of the inclined portion. With such a configuration, the end of the inclined portion can be stably overlapped at the limit rod without being subjected to the pressure of the pitch wire rope, and no misalignment occurs, thereby ensuring that the system will not make misjudgments and ensuring smooth and normal operation.

[0028] According to one scheme of the utility model, the displacement monitoring structure includes: a bracket, a laser sensor switch and a reflector; the bracket is supported on the support seat and is located on the side of the horizontal part away from the abutment displacement end; the laser sensor switch is arranged on the bracket and arranged in the direction of the abutment displacement end, and is located on the same straight line as the axis of the abutment displacement end that has not been displaced due to the loosening of the pitching wire rope; the reflector is arranged at one end of the abutment displacement end facing the laser sensor switch. In this way, the displacement of the abutment displacement end can be accurately monitored through the cooperation of the laser sensor switch and the reflector, so as to accurately monitor and determine whether the pitching wire rope is loose. When the pitching wire rope is loose, the pitching wire rope will transmit pressure to the abutment displacement end, and the abutment displacement end will move downward after being pressed. At this time, the reflector set at its end will move away from the position in the normal state, and the laser emitted by the laser sensor switch cannot be reflected. In this way, the laser sensor switch transmits the laser signal that has not been received to the PLC, and then transmits it to the fault monitoring system of the shore bridge crane, and then reports the loose rope fault, and the shore bridge pitching action stops.

[0029] According to a scheme of the utility model, according to the scheme of the utility model, the utility model effectively solves the problem of the lack of a loose rope monitoring and protection device when the shore bridge crane lowers the front beam for pitching, can ensure accurate monitoring of the pitch wire rope, and effectively improves the safety of the pitch mechanism during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A perspective view schematically showing a slack wire rope monitoring and protection device for a shore bridge crane according to an embodiment of the utility model;

[0031] Figure 2 A schematic top view of a slack wire rope monitoring and protection device for a shore bridge crane according to an embodiment of the utility model is shown;

[0032] Figure 3 A side view of a slack wire rope monitoring and protection device for a shore bridge crane according to an embodiment of the utility model is schematically shown. DETAILED DESCRIPTION

[0033] The present invention will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only intended to enable those skilled in the art to better understand and implement the present invention, rather than to imply any limitation on the scope of the present invention.

[0034] As used herein, the term “including” and variations thereof are to be interpreted as open-ended terms meaning “including, but not limited to.” The term “based on” is to be interpreted as “based, at least in part, on.” The terms “one embodiment” and “an embodiment” are to be interpreted as “at least one embodiment.”

[0035] Figure 1 A perspective view schematically showing a slack wire rope monitoring and protection device for a shore bridge crane according to an embodiment of the utility model; Figure 2 A schematic top view of a slack wire rope monitoring and protection device for a shore bridge crane according to an embodiment of the utility model is shown; Figure 3 The side view of the pitch wire rope slack monitoring and protection device for a shore bridge crane according to one embodiment of the utility model is schematically shown. Figure 1-Figure 3 As shown, in this embodiment, the pitching wire rope loosening monitoring and protection device of the shore bridge crane includes:

[0036] Support structure 1;

[0037] The wire rope displacement receiving structure 2 has one end rotatably supported on the supporting structure 1 and the other end is arranged near the shore bridge crane pitching wire rope 15;

[0038] The displacement monitoring structure 3 is arranged near the wire rope displacement receiving structure 2 to monitor whether the other end of the wire rope displacement receiving structure 2 is displaced due to the loosening of the pitch wire rope. If so, an alarm signal is issued. In this way, the wire rope displacement receiving structure 2 can be supported by the support structure 1, so that the entire wire rope displacement receiving structure 2 can perform longitudinal rotation on one side of the support structure 1. Specifically, when the pitch wire rope is loose, it will touch one end of the displacement receiving structure 2. After receiving the pressure, one end of the displacement receiving structure 2 moves downward. At this time, when the displacement monitoring structure 3 detects that the end of the displacement receiving structure 2 is displaced, it is determined that the pitch wire rope is loose, and then an alarm is issued for maintenance.

[0039] Furthermore, if Figure 1-Figure 3 As shown, in this embodiment, the support structure 1 includes: a support seat 4, a support frame 5, and a limiting rod 6;

[0040] One end of the support frame 5 is supported on the support seat 4, and the other end is rotatably connected to the wire rope displacement receiving structure 2;

[0041] The limiting rod 6 is arranged on the side wall of the supporting seat 4 and is located at one side of the bottom of the supporting frame 5 away from the other end of the wire rope displacement receiving structure 2, and is used to limit the movement range of the wire rope displacement receiving structure 2;

[0042] When the end of one end of the wire rope displacement receiving structure 2 overlaps with the limit rod 6, the distance between the other end of the wire rope displacement receiving structure 2 and the pitch wire rope is the smallest. At this time, the displacement monitoring structure 3 is aligned with the other end, and the monitoring determines that the other end has not been displaced;

[0043] When the pitch wire rope is loosened and the other end is displaced, the end of one end is separated from the limit rod 6. At this time, the displacement monitoring structure 3 is not aligned with the other end, and the other end is monitored and judged to be displaced, and an alarm is issued. In this way, the support seat 4 and the support frame 5 can form a basic support for the wire rope displacement receiving structure 2, ensuring that the wire rope displacement receiving structure 2 can form a stable and reliable support and can rotate under force. The limit rod 6 can limit the rotation range of the wire rope displacement receiving structure 2, so that when the wire rope displacement receiving structure 2 is not subjected to the pressure of the wire rope, the above-mentioned other end of the wire rope displacement receiving structure 2 can be close to the wire rope, and one end is overlapped on the limit rod 6. When subjected to pressure, one end of the wire rope displacement receiving structure 2 moves upward away from the limit rod 6, and the other end is squeezed by the wire rope and moves downward.

[0044] Furthermore, if Figure 1-Figure 3 As shown, in this embodiment, the wire rope displacement receiving structure 2 includes: a rotation support end 7 and an abutment displacement end 8;

[0045] The rotating support end 7 and the pitching wire rope 15 are arranged at intervals along the same direction;

[0046] One end of the abutment displacement end 8 is vertically supported at the end of the rotation support end 7, and is spaced apart from the pitch wire rope and arranged vertically in space;

[0047] The rotating support end 7 includes: a horizontal portion 9 and an inclined portion 10;

[0048] One end of the horizontal portion 9 is connected to the displacement end 8, and the other end is rotatably supported on the support frame 5;

[0049] One end of the inclined portion 10 is fixedly connected to the other end of the horizontal portion 9, and the other end overlaps or moves away from the limit rod 6 according to the position change of the abutment displacement end 8. In this way, the pressure of the abutment displacement end 8 by the pitch wire rope can be transmitted to the rotation support end 7, and the rotation support end 7 is rotated by force so that its inclined portion 10 moves away from the limit rod 6.

[0050] Furthermore, if Figure 1-Figure 3 As shown, in this embodiment, a counterweight 11 is provided on the other end of the inclined portion 10. Such an arrangement enables the end of the inclined portion 10 to be stably overlapped at the limit rod 6 without being subjected to the pressure of the pitch wire rope, thereby ensuring that the system will not make a misjudgment and ensuring smooth and normal operation.

[0051] Furthermore, if Figure 1-Figure 3 As shown, in this embodiment, the displacement monitoring structure 3 includes: a bracket 12, a laser sensor switch 13 and a reflector 14;

[0052] The bracket 12 is supported on the support base 4 and is located on a side of the horizontal portion 9 that is away from the abutting displacement end 8;

[0053] The laser sensor switch 13 is disposed on the bracket 12 and is disposed in the direction of the abutting displacement end 8, and is located on the same straight line as the axis of the abutting displacement end 8 that has not been displaced due to the loosening of the pitch wire rope;

[0054] The reflector 14 is arranged at the end of the abutment displacement end 8 facing the laser sensor switch 13. In this way, the displacement of the abutment displacement end 8 can be accurately monitored through the cooperation of the laser sensor switch 13 and the reflector 14, so as to accurately monitor and judge whether the pitching wire rope is loose. When the pitching wire rope is loose, the pitching wire rope will transmit pressure to the abutment displacement end 8, and the abutment displacement end 8 will move downward after being pressed. At this time, the reflector 14 arranged at its end will move away from the position in the normal state. At this time, the laser emitted by the laser sensor switch 13 cannot be reflected. In this way, the laser sensor switch 13 transmits the laser signal that has not been reflected to the PLC, and then transmits it to the fault monitoring system of the shore bridge crane, and then reports the loose rope fault, and the shore bridge pitching action stops.

[0055] When the maintenance personnel promptly resolve the loose pitch wire rope fault on site, the pitch wire rope returns to normal, and the wire rope displacement receiving structure returns to its original position under the gravity of the counterweight block 11. The wire rope and the wire rope displacement receiving structure simultaneously return to the disengaged state, maintaining a spacing distance of, for example, 20 mm. The laser emitted by the laser sensor switch 13 is reflected by the reflector 14 again, and the laser sensor switch resumes outputting the normal signal of the tightness of the pitch wire rope to the fault monitoring system of the shore bridge crane. The fault is eliminated, and the pitch mechanism is restored to normal working condition.

[0056] According to the above scheme of the utility model, the utility model effectively solves the problem of the lack of a loose rope monitoring and protection device when the shore bridge crane lowers the front beam for pitching, can ensure accurate monitoring of the pitch wire rope, and effectively improves the safety of the pitch mechanism during operation.

[0057] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A monitoring and protection device for the loose wire rope of a shore crane, characterized in that: include: Support structure (1); A wire rope displacement receiving structure (2), one end of which is rotatably supported on the supporting structure (1), and the other end of which is arranged near the pitching wire rope of the shore bridge crane; The displacement monitoring structure (3) is arranged adjacent to the wire rope displacement receiving structure (2) to monitor whether the other end of the wire rope displacement receiving structure (2) is displaced due to the loosening of the pitch wire rope, and if so, an alarm signal is issued.

2. The pitch wire rope loosening monitoring and protection device for a shore bridge crane according to claim 1 is characterized in that: The support structure (1) comprises: a support seat (4), a support frame (5), and a limiting rod (6); One end of the support frame (5) is supported on the support seat (4), and the other end is rotatably connected to the wire rope displacement receiving structure (2); The limiting rod (6) is arranged on the side wall of the support seat (4) and is located at a side of the bottom of the support frame (5) away from the other end of the wire rope displacement receiving structure (2), and is used to limit the movement range of the wire rope displacement receiving structure (2); When the end of one end of the wire rope displacement receiving structure (2) overlaps the limit rod (6), the distance between the other end of the wire rope displacement receiving structure (2) and the pitch wire rope is the smallest, and at this time, the displacement monitoring structure (3) is aligned with the other end to monitor and determine that the other end has not been displaced; When the pitch wire rope loosens and causes the other end to be displaced, the end of one end is separated from the limit rod (6). At this time, the displacement monitoring structure (3) and the other end are in a non-aligned state, and the other end is monitored and judged to be displaced, and an alarm is issued.

3. The pitch wire rope loosening monitoring and protection device for a shore bridge crane according to claim 2 is characterized in that: The wire rope displacement receiving structure (2) comprises: a rotation support end (7) and an abutment displacement end (8); The rotating support end (7) and the pitching wire rope are arranged at intervals along the same direction; One end of the abutment displacement end (8) is vertically supported at the end of the rotation support end (7), and is spaced apart from the pitch wire rope and arranged vertically in space; The rotating support end (7) comprises: a horizontal portion (9) and an inclined portion (10); One end of the horizontal portion (9) is connected to the abutting displacement end (8), and the other end is rotatably supported on the support frame (5); One end of the inclined portion (10) is fixedly connected to the other end of the horizontal portion (9), and the other end overlaps or moves away from the limiting rod (6) according to the position change of the abutting displacement end (8).

4. The pitch wire rope loosening monitoring and protection device for a shore bridge crane according to claim 3 is characterized in that: A counterweight (11) is provided on the other end of the inclined portion (10).

5. The pitch wire rope loosening monitoring and protection device for a shore bridge crane according to claim 4 is characterized in that: The displacement monitoring structure (3) comprises: a bracket (12), a laser sensor switch (13) and a reflective plate (14); The bracket (12) is supported on the support seat (4) and is located on a side of the horizontal portion (9) away from the abutting displacement end (8); The laser sensor switch (13) is arranged on the bracket and is arranged in the direction of the abutment displacement end (8), and is located on the same straight line as the axis of the abutment displacement end (8) that has not been displaced due to the loosening of the pitch wire rope; The reflective plate (14) is arranged at one end of the abutting displacement end (8) facing the laser sensing switch (13).

Images