Steel wire rope monitoring device

Abstract

The utility model discloses a steel wire rope monitoring device which comprises a balance structure which is rotatably arranged in an arm cylinder, the two ends of the balance structure are connected with the connecting ends of two steel wire ropes respectively, and a trigger structure is arranged on the balance structure; the sensor device is arranged in the arm cylinder; the trigger structure triggers the sensor device when the balance structure rotates forward and / or backward by a preset trigger threshold angle. State detection of different steel wire rope abnormal conditions can be achieved, alarming is triggered, the accuracy and reliability of safety monitoring of the steel wire rope assembly are improved, the safety guarantee of a telescopic system of the overhead working truck is further improved, and the life safety of operators is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aerial work platform accessories, in particular to a steel wire rope monitoring device. BACKGROUND

[0002] As a manned operation tool, the safety of the aerial work platform is particularly important, especially when the aerial work platform is in the telescopic state, the safety, stability and reliability of the telescopic system are required. At present, the telescopic arm of the aerial work platform is generally realized by a telescopic oil cylinder and a steel wire rope assembly, therefore, the real-time working condition of the steel wire rope assembly needs to be judged to determine the safety of the telescopic operation.

[0003] At present, a mounting plate with a proximity switch is generally arranged at the tail of the steel wire rope assembly as a broken rope detection device, so as to realize the real-time working condition judgment of the steel wire rope assembly. When the steel wire rope is broken, the spring works to push open the mounting plate, so that the proximity switch is separated from the effective distance of the detection plate and an alarm signal is output. However, in the case of single-side broken rope, the mounting plate of the unbroken side still maintains the compressed state, and the spring force is too small, which may not be able to push open the proximity switch, resulting in that the single-side broken rope cannot be detected, and there is a safety hazard. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a steel wire rope monitoring device which can realize the state monitoring of different abnormal conditions of the steel wire rope and trigger an alarm, thereby improving the accuracy and reliability of the safety monitoring of the steel wire rope assembly.

[0005] According to the steel wire rope monitoring device of the first aspect of the present application, the steel wire rope has two wires, each of the steel wire ropes is arranged along the length direction of the arm cylinder and is arranged on both sides of the arm cylinder;

[0006] The steel wire rope monitoring device comprises:

[0007] A balance structure is rotatably arranged in the arm cylinder, two ends of the balance structure are connected with the connecting end of one of the steel wire ropes, and a trigger structure is arranged on the balance structure.

[0008] A sensor device is arranged in the arm cylinder, and the trigger structure triggers the sensor device when the balance structure rotates by a preset trigger threshold angle in the forward and / or reverse direction.

[0009] The steel wire rope monitoring device according to the present application has at least the following advantages:

[0010] Both ends of the balance structure are connected with a steel wire rope respectively, when any steel wire rope appears loosening or breaking abnormal condition, the balance structure is pulled to rotate, and then the trigger structure arranged on the balance structure triggers the sensor device, triggers the safety alarm, and the health state of the steel wire rope is monitored. The steel wire rope monitoring device of the embodiment of the application can realize normal detection and triggering alarm for single or double broken rope fault condition, improves the accuracy and reliability of safety monitoring of the steel wire rope assembly, further improves the safety protection of the aerial work platform telescopic system, and guarantees the life safety of the operating personnel.

[0011] According to some embodiments of the application, the balance structure comprises:

[0012] The balance block is rotatably arranged in the arm barrel, and both ends of the balance block are provided with through holes for the steel wire rope to pass through;

[0013] The detection plate is arranged on the balance block.

[0014] According to some embodiments of the application, the steel wire rope monitoring device further comprises:

[0015] The bracket is arranged in the arm barrel, and the balance block is rotatably arranged on the bracket.

[0016] According to some embodiments of the application, the balance block is provided with an axle hole in the middle, and the balance structure further comprises:

[0017] The balance axle passes through the axle hole and is connected with the balance block, one end of the balance axle is rotatably connected with the bracket, and the other end of the balance axle is connected with the detection plate.

[0018] According to some embodiments of the application, the balance axle is connected with the balance block through a key.

[0019] According to some embodiments of the application, the sensor device adopts a contact sensor.

[0020] According to some embodiments of the application, the detection plate is a circular plate with a circular arc notch, the contact sensor is arranged in the arm barrel, and the contact head of the contact sensor is arranged in the circular arc notch.

[0021] According to some embodiments of the application, the steel wire rope monitoring device further comprises:

[0022] The anti-rotation structure is used for preventing the two steel wire ropes from rotating.

[0023] According to some embodiments of the application, the connection end of each steel wire rope is provided with an anti-rotation hole, and the anti-rotation structure comprises:

[0024] A rotation-preventing rod is arranged to pass through the rotation-preventing holes of the two wire rope connecting heads.

[0025] According to some embodiments of the present application, the rotation-preventing rod is provided with a fixing hole at each end, and an open-end pin is inserted into each fixing hole.

[0026] Additional aspects and advantages of the present application will be in part apparent and in part pointed out below. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0028] Figure 1 A structural schematic diagram of a wire rope monitoring device according to an embodiment of the present application;

[0029] Figure 2 A side view of a structural schematic diagram of a wire rope monitoring device according to an embodiment of the present application;

[0030] Figure 3 A side view of a structural schematic diagram of a wire rope monitoring device according to another embodiment of the present application.

[0031] REFERENCE NUMERALS

[0032] wire rope 100, fixing nut 110,

[0033] counterweight 210, counterweight shaft 220, detection plate 230, snap ring 240,

[0034] support 300, first panel 310, second panel 320, side panel 330,

[0035] sensor device 400,

[0036] rotation-preventing rod 510, open-end pin 520. DETAILED DESCRIPTION

[0037] Embodiments of the present application are described below in detail, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary only, and are for the purpose of explanation of the present application, and should not be understood as a limitation of the present application.

[0038] In the description of the present application, if there is a description to first, second, etc., it is only for the purpose of distinguishing technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0039] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0040] In the description of the present application, it should be noted that, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0041] The technical solutions of the present application will be described clearly and completely in combination with the drawings. Obviously, the following described embodiments are part of the embodiments of the present application, not all the embodiments.

[0042] Figure 1 It is a structural schematic diagram of the steel wire rope monitoring device of the embodiment of the present application; Figure 2 It is a side view of the structural schematic diagram of the steel wire rope monitoring device of the embodiment of the present application; Figure 3 It is a side view of the structural schematic diagram of the steel wire rope monitoring device of another embodiment of the present application. The steel wire rope monitoring device is applied to the steel wire rope assembly for telescopic arm support in the arm cylinder of the overhead working vehicle. The following refers to Figures 1 to 3 The embodiment of the present application is further described.

[0043] Referring to Figure 1 As shown in the drawings, the embodiment of the present application proposes a steel wire rope monitoring device. The steel wire rope 100 has two, each of which is arranged along the length direction of the arm cylinder and arranged on both sides in the arm cylinder;

[0044] The steel wire rope monitoring device comprises a balance structure and a sensor device 400;

[0045] The balance structure is rotatably arranged in the arm cylinder, and the two ends of the balance structure are connected with the connecting end of one steel wire rope 100, respectively. The balance structure is provided with a trigger structure;

[0046] The sensor device 400 is arranged in the arm cylinder. In the case that the balance structure rotates forward and / or reversely by a preset trigger threshold angle, the trigger structure triggers the sensor device 400.

[0047] In this embodiment, each end of the balancing structure is connected to a steel wire rope 100. When either steel wire rope 100 becomes loose or breaks, it will cause the balancing structure to rotate. This, in turn, triggers the sensor device 400 via a triggering structure mounted on the balancing structure, thus triggering a safety alarm and enabling monitoring of the health status of the steel wire ropes. The steel wire rope monitoring device of this embodiment can detect and trigger alarms for both single-sided and double-sided rope breaks, improving the accuracy and reliability of safety monitoring of the steel wire rope assembly. This further enhances the safety of the aerial work platform's telescopic system and protects the lives of the workers.

[0048] The boom described above is the boom of an aerial work platform vehicle.

[0049] The aforementioned preset trigger threshold angle can be understood as follows: when the balancing structure rotates to a certain extent, it can be determined that the wire rope 100 has malfunctioned, causing the balancing structure to rotate to the preset trigger threshold angle. The aforementioned preset trigger threshold angle can be set according to actual conditions.

[0050] like Figures 1 to 3 As shown, in some embodiments, the balancing structure includes a balancing block 210 and a detection plate 230;

[0051] The counterweight 210 is rotatably installed inside the boom cylinder, and both ends of the counterweight 210 are provided with through holes for a steel wire rope 100 to pass through.

[0052] The detection plate 230 is set on the balance block 210.

[0053] In this embodiment, both ends of the balance block 210 are provided with through holes. Each of the two steel wire ropes 100 passes through one of the through holes and is connected to the balance block 210. Therefore, when one of the steel wire ropes 100 shows signs of loosening or breaking, it will cause the balance block 210 to rotate. The detection plate 230 set on the balance block 210, as a triggering structure, will also move with the rotation of the balance block 210. When the balance block 210 rotates forward and / or in the opposite direction at a preset trigger threshold angle, the detection plate 230 triggers the sensor device 400, triggering a safety alarm, thereby realizing the monitoring of the health status of the steel wire rope.

[0054] like Figure 1 As shown, in some embodiments, the balance block 210 can be an axisymmetric structure, with through holes at both ends also opened in symmetrical positions, to facilitate maintaining force balance after connecting two steel wire ropes 100 at both ends. After the two steel wire ropes 100 pass through their respective through holes and are fixed to the balance block 210, the two steel wire ropes 100 are arranged in parallel, and the steel wire ropes 100 are arranged perpendicularly to the balance block 210.

[0055] like Figures 1 to 3As shown in the drawings, in some embodiments, the connecting end of the steel wire rope 100 is provided with a threaded section, after the steel wire rope 100 passes through the through hole of the balance block 210, a fixing nut 110 is sleeved on the threaded section and tightened to fix, and the tightness of the steel wire rope 100 can also be adjusted through the fixing nut 110, so as to facilitate the force balance of the balance block 210.

[0056] As shown in the drawings, Figures 1 to 3 As shown in the drawings, in some embodiments, the steel wire rope monitoring device further comprises a support 300;

[0057] The support 300 is arranged in the arm cylinder, and the balance block 210 is rotatably arranged on the support 300.

[0058] In this embodiment, the support 300 is fixedly arranged in the arm cylinder, which facilitates the stable arrangement of the balance block 210, and further facilitates the arrangement of the steel wire rope 100 fixed on the balance block 210. In some cases, the above-mentioned support 300 is welded on the arm cylinder.

[0059] As shown in the drawings, Figures 1 to 3 As shown in the drawings, in some embodiments, the middle part of the balance block 210 is provided with a shaft hole, and the balance structure further comprises a balance shaft 220;

[0060] The balance shaft 220 passes through the shaft hole and is connected with the balance block 210, one end of the balance shaft 220 is rotatably connected with the support 300, and the other end of the balance shaft 220 is connected with the detection plate 230.

[0061] In this embodiment, the balance block 210 is rotatably arranged on the support 300 through the balance shaft 220, one end of the balance shaft 220 is rotatably connected with the support 300, the other end of the balance shaft 220 is fixedly connected with the detection plate 230, and the whole is fixedly connected with the balance block 210. When the steel wire rope 100 shows signs of loosening or breaking, causing unbalanced stress, the balance shaft 220, the balance block 210 and the detection plate 230 will rotate relative to the support 300.

[0062] In some embodiments, the balance shaft 220 is connected with the balance block 210 through a key.

[0063] In this embodiment, the balance shaft 220 and the balance block 210 are connected by a key, which has the advantages of simple structure design, reliable work, relatively easy manufacturing process, low manufacturing cost, can effectively transmit the torque of the shaft, large transmission torque, and good adaptability. The shape and size of the key groove can be changed according to the need, so as to adapt to different shaft diameters and loads.

[0064] In some embodiments, the balance shaft 220 is provided with a key groove, and the inside of the shaft hole of the balance block 210 is also provided with a key groove, and a standard key is clamped in the key grooves, so that the balance shaft 220 and the balance block 210 are connected by the key.

[0065] In some embodiments, the sensor device 400 adopts a contact sensor.

[0066] In this embodiment, the sensor device 400 adopts a contact sensor. When the balance block 210 rotates to drive the detection plate 230 to rotate, and then triggers the contact sensor, the contact sensor can convert the contact of the object to the sensor into a trigger electrical signal, trigger a safety alarm, remind the operator that the steel wire rope 100 is abnormal, and need to check and tighten or replace the steel wire rope 100, and then realize the monitoring of the health state of the steel wire rope. The contact sensor has simple structure, fast response speed, strong durability, low cost and high sensitivity, and is widely used in various application scenarios.

[0067] The above-mentioned contact sensor can adopt a mechanical contact switch. The mechanical transmission and the mechanical contact switch monitoring device are safer and more effective than other detection devices. The relaxation state of the steel wire rope 100 when the alarm is triggered, that is, the failure tightness of the steel wire rope 100, can be set by adjusting the range of the contact switch contacts.

[0068] As shown in Figure 1 In some embodiments, the detection plate 230 is a circular plate with a circular arc notch, the contact sensor is arranged in the arm cylinder, and the contact head of the contact sensor is arranged in the circular arc notch.

[0069] In this embodiment, the detection plate 230 is a circular plate with a circular arc notch, and the contact head of the contact sensor is arranged in the circular arc notch. When the detection plate 230 rotates, the position of the circular arc notch moves correspondingly, and the contact head of the contact sensor originally located in the circular arc notch is contacted and extruded by other non-notched parts of the circular plate, triggering a safety alarm.

[0070] The above-mentioned circular arc notch can set the relaxation state of the steel wire rope 100 when the alarm is triggered, that is, the failure tightness of the steel wire rope 100, by selecting different sizes of the circular arc angle.

[0071] As shown in Figure 3As shown in the figure, in some embodiments, the bracket 300 can be a semi-enclosed structure with a first panel 310, a second panel 320 and a side panel 330, the balance block 210 being semi-enclosed by the first panel 310, the second panel 320 and the side panel 330, and a through hole for the balance shaft 220 to pass through being provided at a position corresponding to an axial hole provided at the first panel 310 and the second panel 320 of the bracket 300 and the balance block 210, one end of the balance shaft 220 being fixed by a snap ring 240, and the other end being provided with a detection plate 230. The semi-enclosed bracket 300 can limit the rotation amplitude of the balance block 210 to a certain extent, so as to avoid large rotation of the balance block 210 in the case of loosening or breaking of the steel wire rope 100 on one side, and to avoid serious adverse effects on the normal steel wire rope 100 on the other side.

[0072] As shown in the figure, Figure 1 In some embodiments, the touch sensor includes a contact and a contact seat, wherein the contact seat can be fixedly arranged on the bracket 300, and specifically, the contact seat can be arranged on the second panel 320 of the bracket 300, and the contact is embedded in the circular-arc notch of the detection plate 230.

[0073] In some embodiments, the steel wire rope monitoring device further includes an anti-rotation structure.

[0074] The anti-rotation structure is used to prevent the two steel wire ropes 100 from rotating.

[0075] In this embodiment, the anti-rotation structure is used to prevent the steel wire rope 100 from rotating, and thus prevent the steel wire rope 100 from being scattered due to rotation. The anti-rotation structure can be a structure for fixing each side steel wire rope 100 to the balance block 210, or a structure for relatively fixing the two steel wire ropes 100.

[0076] As shown in the figure, Figures 1 to 3 In some embodiments, the connection end of each steel wire rope 100 is provided with an anti-rotation hole, and the anti-rotation structure includes an anti-rotation rod 510.

[0077] The anti-rotation rod 510 passes through the anti-rotation holes of the connection end of the two steel wire ropes 100.

[0078] In this embodiment, the anti-rotation structure adopts the anti-rotation rod 510, which is transversely arranged between the two steel wire ropes 100, i.e., passes through the anti-rotation holes of the connection end of the two steel wire ropes 100, which can effectively prevent the steel wire rope 100 from being scattered due to rotation under the action of a rotating force, improve the safety of the steel wire rope, and prolong the service life of the steel wire rope 100.

[0079] As shown in the figure, Figure 1 and Figure 3As shown, in some embodiments, the anti-rotation rod 510 has a fixing hole at each end, and a fixing split pin 520 is inserted into each fixing hole.

[0080] In this embodiment, by opening a fixing hole at each end of the anti-rotation rod 510 and inserting a fixing split pin 520 into each fixing hole, the anti-rotation rod 510 can be prevented from being pulled out of the anti-rotation hole of the steel wire rope 100, and further fixation is achieved.

[0081] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0082] Although the embodiments of the present application are described in detail above in combination with the drawings, the present application is not limited to the above embodiments, and those skilled in the art can understand that various changes, modifications, replacements and transformations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A wire rope monitoring device, characterized by There are two steel wire ropes, each of which is arranged along the length of the boom and on both sides inside the boom. The wire rope monitoring device includes: A balancing structure is rotatably installed inside the boom cylinder. Both ends of the balancing structure are respectively connected to the connecting end of a steel wire rope. A triggering structure is provided on the balancing structure. The sensor device is installed inside the arm cylinder; When the balancing structure rotates forward and / or in the opposite direction by a preset trigger threshold angle, the triggering structure triggers the sensor device.

2. The wire rope monitoring device of claim 1, wherein, The balancing structure includes: A counterweight is rotatably mounted inside the boom cylinder, and both ends of the counterweight are provided with through holes for one of the steel wire ropes to pass through. A detection plate is mounted on the balance block.

3. The steel wire rope monitoring device of claim 2, wherein, The wire rope monitoring device also includes: A support frame is installed inside the arm cylinder, and the balance block is rotatably mounted on the support frame.

4. The wire rope monitoring device of claim 3, wherein, The balance block has a shaft hole in its center, and the balancing structure further includes: A balance shaft passes through the shaft hole and is connected to the balance block. One end of the balance shaft is rotatably connected to the bracket, and the other end of the balance shaft is connected to the detection plate.

5. The steel wire rope monitoring device of claim 4, wherein, The balance shaft is connected to the balance block via a key.

6. The steel wire rope monitoring device of claim 2, wherein, The sensor device is a contact sensor.

7. The wire rope monitoring device according to claim 6, characterized in that, The detection plate is a circular plate with an arc notch, and the contact sensor is disposed inside the arm cylinder, with the contact of the contact sensor disposed inside the arc notch.

8. The wire rope monitoring device according to claim 1, characterized in that, The wire rope monitoring device also includes: An anti-rotation structure is used to prevent the two steel wire ropes from rotating on their own.

9. The wire rope monitoring device according to claim 8, characterized in that, Each of the wire ropes is provided with an anti-rotation hole at its connection end, and the anti-rotation structure includes: An anti-rotation rod passes through the anti-rotation hole at the two ends of the wire rope connection.

10. The wire rope monitoring device according to claim 9, characterized in that, Both ends of the anti-rotation rod are provided with fixing holes, and fixing cotter pins are inserted into the fixing holes.

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