CN214668200U - Steel wire rope detection device for crane - Google Patents
Steel wire rope detection device for crane Download PDFInfo
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- CN214668200U CN214668200U CN202120610584.XU CN202120610584U CN214668200U CN 214668200 U CN214668200 U CN 214668200U CN 202120610584 U CN202120610584 U CN 202120610584U CN 214668200 U CN214668200 U CN 214668200U
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Abstract
The utility model relates to a steel wire rope detection device for a crane, which is a safety detection device for the stretching degree of a steel wire rope of a portal crane, and comprises a magnetic component, a magnetic induction sensor and a steel wire rope speed measurement component, wherein the magnetic component, the magnetic induction sensor and the steel wire rope speed measurement component are equidistantly arranged on the steel wire rope; the magnetic induction sensor and the steel wire rope speed measurement assembly are arranged on a trolley of the portal crane through a sleeve, openings for the clearance-avoiding steel wire ropes are respectively formed in the upper side and the lower side of the sleeve, the magnetic induction sensor is fixed in the middle of an inner cavity of the sleeve, and two pairs of the steel wire rope speed measurement assembly are respectively arranged on the upper side and the lower side of the magnetic induction sensor; the magnetic induction sensor and the steel wire rope speed measurement assembly are electrically connected with an external control system. The utility model provides a gantry crane wire rope tensile degree safety inspection equipment can monitor wire rope's tensile degree, has avoided the tensile excessive condition of breaking off of wire rope, has ensured personnel's property and personal safety, suitable further popularization and application.
Description
Technical Field
The utility model relates to a hoist field is a wire rope detection device for hoist.
Background
The crane refers to a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range. Also known as crown blocks, navigation cranes and cranes. The device is mainly used for loading and unloading operations of outdoor goods yards, stock yards and bulk goods, and is important mechanical equipment for house building and bridge construction.
The steel wire rope that current hoist used is formed by the winding of stranded thin steel wire, and the steel wire rope receives the tensile influence of heavy object in long-time use, and the relative weak section of wire rope intensity can be stretched and become thin, and this tensile strength that will lead to wire rope reduces, if not discover in time, and wire rope breaks easily, and then causes the loss of property and casualties of personnel.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a wire rope detection device for hoist.
The utility model discloses a following technical scheme realizes:
a safety detection device for the stretching degree of a steel wire rope of a gantry crane comprises magnetic assemblies, magnetic induction sensors and a steel wire rope speed measurement assembly, wherein the magnetic assemblies are equidistantly arranged on the steel wire rope; the magnetic induction sensor and the steel wire rope speed measurement component are installed on a trolley of the portal crane through a sleeve, openings used for avoiding the empty steel wire rope are respectively formed in the upper side and the lower side of the sleeve, the magnetic induction sensor is fixed in the middle of the inner cavity of the sleeve, the steel wire rope speed measurement component is provided with two pairs of upper sides and lower sides, the two pairs of upper sides and the lower sides of the magnetic induction sensor are respectively arranged, and the magnetic induction sensor and the steel wire rope speed measurement component are electrically connected with an external control system.
Further, magnetic component includes first semicircle ring, second semicircle ring, stings tooth, magnetism strip and locking bolt, evenly be equipped with on the inner wall of first semicircle ring, second semicircle ring and sting the tooth, the magnetism strip inlays on the outer wall of first semicircle ring and second semicircle ring, first semicircle ring and second semicircle ring are through two sets of locking bolt fixed connection, and two sets of locking bolts all pass wire rope and locate the upper and lower both sides of magnetism strip respectively.
Furthermore, the wire rope speed measuring component comprises a guide wheel fixed in the inner cavity of the sleeve and a tachometer used for detecting the rotating speed of the concave wheel on the guide wheel, a support end of the guide wheel is fixed in the inner cavity of the sleeve, a rubber anti-slip layer is arranged on the inner wall of the concave wheel of the guide wheel, and the detection end of the tachometer is connected with a rotating shaft of the concave wheel and used for detecting the rotating speed of the guide wheel.
Preferably, the first semicircular ring is provided with a convex strip, and the second semicircular ring is provided with a groove matched with the convex strip.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a gantry crane wire rope tensile degree safety inspection equipment can monitor wire rope's tensile degree, has avoided the tensile excessive condition of breaking off of wire rope, has ensured personnel's property and personal safety, suitable further popularization and application.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a partial enlarged view of the present invention;
FIG. 3 is a front view of the magnetic assembly;
FIG. 4 is a top view of the magnetic assembly;
FIG. 5 is a schematic view of the assembly of the magnetic assembly and the steel wire rope;
FIG. 6 is a schematic diagram of a steel wire rope speed measuring assembly;
FIG. 7 is a schematic view of a magnetic induction sensor;
FIG. 8 is a schematic view of an arc assembly;
figure 9 is a schematic representation of a wireline passing through an arc assembly.
The reference numbers in the figures represent respectively:
a gantry crane-1; a sleeve-2; a magnetic induction sensor-3; a magnetic component-4; a steel wire rope speed measuring component-5; a trolley-11; a steel wire rope-12; an arc assembly-21; a first semi-circular ring-41; a second semi-circular ring-42; a bite-block-43; a magnetic strip-44; locking bolt-45; a guide wheel-51; tachometer-52.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to the attached drawings 1-9, a steel wire rope detection device for a crane comprises magnetic components 4 which are equidistantly arranged on a steel wire rope 12, a magnetic induction sensor 3 and a steel wire rope speed measurement component 5 for detecting the winding and unwinding speed of the steel wire rope 12; wherein the distance between the magnetic components 4 is 80-100 cm; the magnetic induction sensor 3 and the steel wire rope speed measurement component 5 are arranged on a trolley 11 of the portal crane 1 through a sleeve 2, openings for the clearance steel wire rope 12 are respectively formed in the upper side and the lower side of the sleeve 2, the magnetic induction sensor 3 is fixed in the middle of an inner cavity of the sleeve 2, and two pairs of the steel wire rope speed measurement component 5 are respectively arranged on the upper side and the lower side of the magnetic induction sensor 3; the magnetic induction sensor 3 and the steel wire rope speed measuring component 5 are electrically connected with an external control system; the control system is also connected with a corresponding early warning module, wherein the early warning module can select a warning buzzer, a flashing light and the like.
Further, the magnetic assembly 4 comprises a first semicircular ring 41, a second semicircular ring 42, a snap tooth 43, a magnetic strip 44 and a locking bolt 45, wherein the thickness of the first semicircular ring 41 and the second semicircular ring 42 is about 2.5 mm; the inner walls of the first semicircular ring 41 and the second semicircular ring 42 are uniformly provided with teeth 43, the magnetic strips 44 are embedded on the outer walls of the first semicircular ring 41 and the second semicircular ring 42, the first semicircular ring 41 and the second semicircular ring 42 are fixedly connected through two groups of locking bolts 45, and the two groups of locking bolts 45 penetrate through the steel wire rope 12 and are respectively arranged on the upper side and the lower side of the magnetic strips 44; the second semicircular ring 42 is provided with an internal threaded hole, and the locking bolt 45 is in threaded connection with the internal threaded hole in the second semicircular ring 42, so that the first semicircular ring 41 and the second semicircular ring 42 are fixed; when the first semicircular ring 41 and the second semicircular ring 42 are locked by the locking bolt 45, the first semicircular ring 41 and the second semicircular ring 42 tightly hold the steel wire rope 12 and the teeth 43 are inserted into the steel wire rope 1 to prevent the magnetic component 4 from moving on the steel wire rope, and the magnetic induction sensor 3 can sense the magnetic strip 44 on the magnetic component 4.
Furthermore, a protruding strip is arranged on the first semicircular ring 41, and a groove matched with the protruding strip is arranged on the second semicircular ring 42, so that the first semicircular ring 41 and the second semicircular ring 42 can be conveniently installed in an aligned mode.
As a further improvement, the sleeve 2 is formed by assembling two groups of arc-shaped components 21, the magnetic induction sensor 3 is fixed in the middle of the inner wall of one group of arc-shaped components 21, the upper end and the lower end of the inner wall of the two groups of arc-shaped components 21 are both fixed with the steel wire rope speed measurement component 5, the two groups of steel wire rope speed measurement components 5 at the same height clamp the steel wire rope 12 on the same straight line, and the sleeve 2 is fixed on the trolley 11 of the portal crane 1 through bolts; wherein sleeve 2 is assembled through the bolt by two sets of arc subassemblies 21 and forms, and this kind of setting is convenient for during later stage installation with sleeve 2 cover in wire rope's the outside. Wherein, the butted side walls of the two groups of arc-shaped components 21 are respectively provided with a positioning column and a matching hole matched with the positioning column; this arrangement facilitates the alignment installation of the two sets of arc assemblies 21. Openings at the upper end and the lower end of the sleeve 2 are coaxially arranged, the upper end and the lower end of each opening are in a symmetrical funnel shape, and the joint of the middle parts is in arc transition; wherein both ends are the funnel-shaped guide effect that can play at wire rope 12's the in-process of receiving and releasing about the opening symmetrically about the opening, and the junction in opening middle part is the circular arc transition, and the circular arc transition can prevent wire rope 12 and is scraped at the in-process of receiving and releasing.
Further, the steel wire rope speed measuring component 5 comprises a guide wheel 51 fixed in the inner cavity of the sleeve 2 and a tachometer 52 for detecting the rotating speed of a concave wheel on the guide wheel 51, wherein the guide wheel 51 consists of a bracket and a concave wheel rotationally connected to the bracket; the bracket end of the guide wheel 51 is fixed in the inner cavity of the sleeve 2, and the inner wall of the concave wheel of the guide wheel 51 is provided with a rubber anti-skid layer; the rubber anti-slip layer can improve the friction force between the guide wheel 51 and the steel wire rope 12, so that the steel wire rope 12 can better drive the guide wheel 51 to rotate; in addition, the rubber anti-slip layer has certain elasticity, and when the magnetic component 4 on the steel wire rope 12 passes through, the rubber anti-slip layer can avoid, so that the guide wheel 51 is prevented from being damaged by pressure; the detection end of the tachometer 52 is connected with the rotating shaft of the concave wheel and is used for detecting the rotating speed of the tachometer 52, wherein the rotating speed of the tachometer 52 used for detecting the concave wheel is Wr/min, the equivalent circumference of the concave wheel on the guide wheel 51 matched with the steel wire rope 12 is 2 pi R, wherein R is the equivalent radius, when the steel wire rope 12 is attached to the concave wheel, the minimum distance between the attached steel wire rope 12 and the axis of the concave wheel is the equivalent radius R, and the winding and unwinding speed V of the steel wire rope 12 is W2 pi R.
As a further improvement, an ink jet device is further installed in the sleeve 2, and when the calculated length L of the steel wire rope 12 is greater than the set early warning length value, the ink jet device jets ink so as to find out the stretched over-long section of the steel wire rope 12 in the later maintenance.
The method for detecting the steel wire rope stretching degree of the steel wire rope detection device for the crane in the embodiment comprises the following steps:
inputting the early warning length value of the steel wire rope 12 between the adjacent magnetic assemblies 4;
scanning the magnetic assemblies 4 through the magnetic induction sensor 3, and measuring the time required by the adjacent magnetic assemblies 4 to pass through the magnetic induction sensor 3 according to the time difference of the adjacent magnetic assemblies 4;
the winding and unwinding speed of the steel wire rope 12 and the winding and unwinding speed V of the steel wire rope 12 are measured and calculated through the steel wire rope speed measuring component 5t＝W t2 π R, wherein WtThe rotation speed of the concave wheel measured by the tachometer 52 at time t; vtThe winding and unwinding speed of the steel wire rope 12 at the time t; and taking the average value measured and calculated by each group of steel wire rope speed measuring component 5 as the winding and unwinding speed of the steel wire rope 12 at the moment
Calculating the length of the steel wire rope 12 between the adjacent magnetic assemblies 4 in an integral manner according to the time required by the adjacent magnetic assemblies 4 to pass through the magnetic induction sensor 3 and the winding and unwinding speed of the steel wire rope 12 in the corresponding time measured and calculated by the steel wire rope speed measuring assembly 5; the length L of the steel wire rope 12 between the adjacent magnetic assemblies 4 is calculated according to the following formula:
wherein t isn+1-tnI.e. the time required for the adjacent magnetic assembly 4 to pass through the magnetic induction sensor 3; for example, t2-t1 are the time differences between the second magnetic assembly 4 and the first magnetic assembly 4 detected by the magnetic induction sensor 3.
When the calculated length L of the steel wire rope 12 is larger than the set early warning length value, the control system controls the corresponding early warning module to perform early warning prompt, namely, a warning buzzer and a flashing light perform early warning prompt.
The last group of magnetic assemblies 4 detected by the magnetic induction sensor 3 before the motor steering change and the first group of magnetic assemblies 4 detected after the motor steering change are not used as input to calculate the length of the steel wire rope 12 between the adjacent magnetic assemblies 4; when the motor rotates forwards and backwards, the magnetic assemblies 4 read by the magnetic induction sensor 3 can be the same magnetic assembly 4, the length of the steel wire rope 12 between the adjacent magnetic assemblies 4 cannot be accurately calculated, and in order to avoid the situation of false alarm, the last group of magnetic assemblies 4 detected by the magnetic induction sensor 3 before the motor steering change and the first group of magnetic assemblies 4 detected after the motor steering change are not used as input for calculation.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A steel wire rope detection device for a crane is characterized by comprising magnetic components (4) which are equidistantly arranged on a steel wire rope (12), a magnetic induction sensor (3) and a steel wire rope speed measurement component (5) for detecting the winding and unwinding speed of the steel wire rope (12); install on trolley (11) of gantry crane (1) through sleeve (2) magnetic induction sensor (3) and wire rope speed measuring component (5), the opening that is used for keeping away empty wire rope (12) is offered respectively to the upper and lower both sides of sleeve (2), magnetic induction sensor (3) are fixed in the inner chamber middle part of sleeve (2), wire rope speed measuring component (5) set up the upper and lower both sides that magnetic induction sensor (3) were located respectively to two pairs, magnetic induction sensor (3) and wire rope speed measuring component (5) and external control system electric connection.
2. The steel wire rope detection device for the crane according to claim 1, wherein the magnetic component (4) comprises a first semicircular ring (41), a second semicircular ring (42), a tooth (43), a magnetic strip (44) and locking bolts (45), the tooth (43) is uniformly arranged on the inner walls of the first semicircular ring (41) and the second semicircular ring (42), the magnetic strip (44) is embedded on the outer walls of the first semicircular ring (41) and the second semicircular ring (42), the first semicircular ring (41) and the second semicircular ring (42) are fixedly connected through two groups of locking bolts (45), and the two groups of locking bolts (45) penetrate through the steel wire rope (12) and are respectively arranged on the upper side and the lower side of the magnetic strip (44).
3. The steel wire rope detection device for the crane according to claim 1, wherein the steel wire rope speed measurement component (5) comprises a guide wheel (51) fixed in an inner cavity of the sleeve (2) and a tachometer (52) used for detecting the rotating speed of a concave wheel on the guide wheel (51), a bracket end of the guide wheel (51) is fixed in the inner cavity of the sleeve (2), a rubber anti-slip layer is arranged on the inner wall of the concave wheel of the guide wheel (51), and a detection end of the tachometer (52) is connected with a rotating shaft of the concave wheel and used for detecting the rotating speed of the guide wheel (51).
4. The device as claimed in claim 2, wherein the first semi-circular ring (41) has a protruding strip thereon, and the second semi-circular ring (42) has a groove thereon for engaging with the protruding strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120610584.XU CN214668200U (en) | 2021-03-25 | 2021-03-25 | Steel wire rope detection device for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120610584.XU CN214668200U (en) | 2021-03-25 | 2021-03-25 | Steel wire rope detection device for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214668200U true CN214668200U (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120610584.XU Active CN214668200U (en) | 2021-03-25 | 2021-03-25 | Steel wire rope detection device for crane |
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| Country | Link |
|---|---|
| CN (1) | CN214668200U (en) |
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2021
- 2021-03-25 CN CN202120610584.XU patent/CN214668200U/en active Active
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