CN217867798U - Crane leg-raising warning device and crane - Google Patents
Crane leg-raising warning device and crane Download PDFInfo
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- CN217867798U CN217867798U CN202222319132.3U CN202222319132U CN217867798U CN 217867798 U CN217867798 U CN 217867798U CN 202222319132 U CN202222319132 U CN 202222319132U CN 217867798 U CN217867798 U CN 217867798U
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Abstract
The application provides a hoist sticks up leg warning device includes: the trigger piece is arranged on the bottom plate of the supporting foot plate in a displacement mode and comprises a first end capable of protruding out of the bottom plate and used for being in contact with the bearing surface and a second end located on the second surface of the bottom plate; a sensing member; the warning piece can be in communication connection with the sensing piece; wherein, under warning piece and response piece communication connection's state, when the bottom plate when liftoff, first end protrusion in the first face of bottom plate, the response piece is triggered to the second end, and warning piece sends the warning. Simple structure, the practicality is strong, can prevent that the hoist leads to the landing leg to stick up the danger that the leg tumbles because of overloading.
Description
Technical Field
The application relates to the technical field of cranes, in particular to a crane leg raising warning device and a crane.
Background
The crane supports the whole operation main body by a plurality of support legs in the working process, and the lower parts of the support legs are in supporting contact with the ground through support leg discs. When the weight of the lifted heavy object is estimated to be insufficient by an operator to lift in an overload manner, the situation that a certain leg is tilted off the ground is easily caused, the whole operation body is easily tilted, and the serious consequence of car damage and people death is caused.
SUMMERY OF THE UTILITY MODEL
In view of this, this application provides a hoist stick up leg warning device and hoist, simple structure, the practicality is strong, can prevent the hoist and lead to the landing leg to stick up the danger that the leg tumbles because of overloading.
In order to achieve the above purpose, the present application provides the following technical solutions:
a hoist sticks up leg warning device includes:
the trigger piece is arranged on the bottom plate of the supporting foot plate in a displacement mode and comprises a first end capable of protruding out of the first surface of the bottom plate and a second end located on the second surface of the bottom plate, and the first surface of the bottom plate is used for being in contact with the bearing surface;
a sensing member;
the warning piece can be in communication connection with the sensing piece;
wherein, under warning piece and response piece communication connection's state, work as when the bottom plate is liftoff, first end protrusion in the first face of bottom plate, the second end triggers the response piece, warning piece sends the warning.
Optionally, the elastic element is connected between the trigger element and the bottom plate and can drive the first end to protrude out of the first surface of the bottom plate.
Optionally, a through hole is formed in the bottom plate, and the trigger is slidably disposed in the through hole.
Optionally, the width of the second end of the trigger is greater than the width of the through hole, and the sensing member is located between the second end and the bottom plate and located in a projection area of the second end on the bottom plate.
Optionally, the trigger member comprises a stem portion which is a sliding fit with the through-hole and a cap portion which is attached to an end of the stem portion and forms the second end.
Optionally, the elastic element further comprises an extension spring sleeved outside the rod portion, and two ends of the extension spring are respectively connected to the cap portion and the bottom plate.
Optionally, the warning device further comprises a circuit switch, and the circuit switch, the sensing element and the warning element are connected in series.
Optionally, the sensing element is provided as a pressure sensor.
Optionally, the warning member is provided as a buzzer.
A crane comprises the crane leg raising warning device.
The application provides a hoist sticks up leg warning device, trigger member displacement sets up on the bottom plate of foot dish, leaves the loading end through the bottom plate and drives trigger member emergence displacement to make trigger member trigger response piece, the response piece sends the sensing signal and makes the warning piece send warning signal, and then warns the risk that the hoist sticks up the leg. Simple structure, with low costs, the installation of being convenient for, the practicality is strong, and can prevent effectively that the hoist leads to the landing leg to stick up the danger that the leg tumbles because of overloading.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a structural diagram of a lifting leg warning device of a crane in a bottom plate grounding state;
FIG. 2 is a structural diagram of a lifting leg warning device of a crane in a state that a bottom plate is lifted off the ground;
fig. 3 is a circuit diagram of the sensing element and the warning element.
1-a trigger part, 2-a sensing part, 3-a warning part, 4-an elastic part, 5-a bottom plate, 11-a first end and 12-a second end.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1 to 3, an embodiment of the application provides a warning device for a tilted leg of a crane, which includes a trigger 1, a sensor 2 and a warning member 3.
The trigger 1 is disposed on the bottom plate 5 of the leg plate in a displacement manner, so that the trigger 1 can be changed in position relative to the bottom plate 5, and specifically, the trigger 1 may be disposed on a side surface of the bottom plate 5 or may be disposed through the bottom plate 5. The trigger 1 has a first end 11 and a second end 12, and the first end 11 and the second end 12 can also be changed in position relative to the base plate 5 by displacement of the trigger 1 relative to the base plate 5. Here, the first end 11 may protrude from a first surface of the bottom plate 5, the first surface is a surface of the bottom plate 5 for contacting with the bearing surface, when the crane has a leg tilting, the corresponding bottom plate 5 may be separated from the bearing surface, and the first end 11 may protrude from the first surface, and the second end 12 and the first end 11 may change their positions synchronously.
It will be appreciated that the base plate 5 has a first side which is a lower surface for contacting the load-bearing surface and a second side which is a side of the base plate 5 not intended for contacting the load-bearing surface, to avoid the second end 12 being disposed on the first side and being affected by contact with the load-bearing surface, where the second side may be an upper surface or a side surface of the base plate 5. The bearing surface may be a floor or other structural surface for supporting the bottom plate.
Specifically, response piece 2 can set up at the second face to make second end 12 be located the homonymy with response piece 2, can guarantee that second end 12 can trigger response piece 2 accurately, and can pass through line connection between response piece 2 and the warning piece 3, also can connect through wireless form.
When the crane is in operation, the bottom plate 5 of the supporting leg disc is supported by the bearing surface to support an operation main body, the induction part 2 is in communication connection with the warning part 3, when the crane tilts legs, the bottom plate 5 of the supporting leg disc leaves the bearing surface, the first end 11 of the trigger part 1 loses the support of the bearing surface, the bottom plate protrudes out of the first surface of the bottom plate 5 under the action of self gravity, meanwhile, the second end 12 of the trigger part 1 and the first end 11 synchronously displace, so that the induction part 2 is triggered by the second end 12, an induction signal for enabling the warning part 3 to give out a warning is formed, the induction part 2 transmits the induction signal to the warning part 3, and finally the warning part 3 sends out a warning signal to prevent the crane from tilting due to the fact that the legs tilt due to overload.
So set up, trigger 1 displacement sets up on the bottom plate 5 of foot dish, leaves the loading end through bottom plate 5 and drives trigger 1 and take place the displacement to make trigger 1 trigger response piece 2, response piece 2 sends the sensing signal and makes warning piece 3 send out warning signal, and then warns the risk of hoist perk leg. Simple structure, with low costs, the installation of being convenient for, the practicality is strong, and can prevent effectively that the hoist leads to the landing leg to stick up the danger that the leg tumbles because of overloading.
In order to enable the first end 11 of the trigger member 1 to accurately displace according to the ground clearance of the bottom plate 5, the leg raising warning device of the crane further comprises an elastic member 4, wherein the elastic member 4 is connected between the trigger member 1 and the bottom plate 5 and can drive the first end 11 to protrude out of the first surface of the bottom plate 5. When the bottom plate 5 of the supporting leg disc contacts with the bearing surface, the first end 11 of the trigger piece 1 cannot protrude out of the first surface of the bottom edge, the elastic piece 4 accumulates elastic potential energy, when the bottom plate 5 of the supporting leg disc leaves the bearing surface, the first end 11 of the trigger piece 1 loses the support of the bearing surface, the elastic piece 4 releases the elastic potential energy, and then the first end 11 is driven to move relative to the bottom plate 5 to protrude out of the first surface of the bottom plate 5. Like this, exert external force through elastic component 4 to the second end 12 of trigger member 1, can promote the linkage reliability between trigger member 1 and the bottom plate 5, guarantee the accuracy of triggering of trigger member 1 and response piece 2.
In some embodiments, the bottom plate 5 is provided with a through hole, the through hole penetrates through the upper surface and the lower surface of the bottom plate 5, the trigger 1 is in sliding fit with the through hole and is arranged in the through hole in a sliding manner, so that the first end 11 of the trigger 1 can protrude out of the lower surface of the bottom plate 5, the second end 12 is located on the upper surface of the bottom plate 5, and the second surface is the upper surface, so that the mode that the trigger 1 is installed by arranging the through hole on the bottom plate 5 can improve the installation reliability of the trigger 1, the overall stability of the bottom plate 5 can be ensured, and the accuracy of linkage fit of the first end 11 of the trigger 1, the bottom plate 5 and the bearing surface is ensured.
Of course, if the second surface of the bottom plate 5 is a side surface, a through groove may be formed in the side surface of the bottom plate 5, the through groove penetrates through the upper and lower surfaces of the bottom plate 5, and the through groove is used for mounting the trigger 1.
Further, based on the scheme that the through hole is formed in the bottom plate 5, the width of the second end 12 of the trigger 1 is greater than the width of the through hole, where the width is the maximum width based on the plane where the upper surface of the bottom plate 5 is located, if the second end 12 of the trigger 1 is a cross bar, the width of the second end 12 is the length of the cross bar, if the second end 12 of the trigger 1 is a disc, the width of the second end 12 is the diameter of the disc, if the through hole is a round hole, the width of the through hole is the diameter of the round hole, and if the through hole is a square hole, the width of the through hole is the length of the diagonal of the square hole. Therefore, the second end 12 of the trigger 1 can be prevented from extending into the through hole, and the trigger 1 can be prevented from falling off the bottom plate 5.
Moreover, the sensing element 2 is located between the second end 12 and the bottom plate 5 and located in a projection area of the second end 12 on the bottom plate 5, so that the sensing element 2 is located on a displacement path of the second end 12 of the triggering element 1, the triggering element 1 can be ensured to trigger the sensing element 2 in time, and meanwhile, the sensing element 2 is arranged on the upper surface of the bottom plate 5 and cannot be affected by the bearing surface.
In some alternatives, trigger 1 includes a stem portion that is a sliding fit in the through-hole and a cap portion that is attached to the end of the stem portion and that defines second end 12. Therefore, the trigger piece 1 is simple in structure, convenient to install and beneficial to saving cost. Specifically, the trigger 1 may be configured as a bolt or a nail as in the prior art.
For example, the triggering part 1 is a bolt, the diameter of the rod part of the bolt is smaller than that of the through hole, so that the rod part of the bolt can slide in the through hole, and the diameter of the cap part of the bolt is larger than that of the through hole, so that the cap part of the bolt cannot enter the through hole along with the rod part. Correspondingly, the one end that the cap portion was kept away from to the pole portion of bolt constitutes the first end of trigger piece, the cap portion of bolt constitutes the second end of trigger piece, the pole portion length of bolt is greater than the bottom plate thickness simultaneously, when the first face and the loading face butt of bottom plate, the bolt receives the effect of loading face, upwards displacement along the through-hole, so that the cap portion and the response piece separation of bolt, when the first face of bottom plate left the loading face, the bolt did not receive the effect of loading face, downwards displacement along the through-hole, and then can make the cap portion and the response piece contact of bolt, and make the response piece form trigger signal.
Combine above-mentioned elastic component 4's scheme, elastic component 4 can set up to extension spring, and this extension spring cover is established in the outside of pole portion, and extension spring's one end is connected with the cap portion, the other end is connected with bottom plate 5, and through extension spring's tensile force, drive trigger 1 and for the displacement of bottom plate 5, drive the first end 11 protrusion in the first face of bottom plate 5 of trigger 1 promptly. Therefore, the extension spring is positioned on one side of the bottom plate 5 far away from the bearing surface, so that the influence on the extension spring caused by the contact between the bottom plate 5 and the bearing surface can be avoided.
Of course, the elastic member 4 may also be disposed in the through hole of the bottom plate 5, and specifically, the elastic member 4 may be a compression spring disposed in the through hole, and one end of the compression spring is connected to the rod portion and the other end is connected to the bottom plate 5.
As shown in figure 3, the leg raising warning device for the crane further comprises a circuit switch 6, wherein the circuit switch 6, the sensing piece 2 and the warning piece 3 are connected in series. When the operation is carried out, the bottom plate 5 of the supporting leg disc and the bearing surface support the operation main body, then the circuit switch 6 is closed, so that the induction piece 2 and the warning piece 3 are in circuit connection, at the moment, the induction piece 2 is not triggered by the trigger piece 1, and the warning piece 3 cannot send out a warning signal; when the crane tilts the legs, the bottom plate 5 of the supporting leg disc leaves the bearing surface, the second end 12 of the trigger piece 1 triggers the induction piece 2, the induction piece 2 is triggered to conduct a circuit, and the warning piece 3 sends a warning signal. Therefore, the circuit is triggered and warned in a series connection mode, external influence factors are few, and the stability and the reliability are better.
It will be appreciated that the sensing element 2 is triggered to make the circuit conductive, i.e. to form a conductive signal in the circuit, and that the conductive signal, i.e. the sensing element 2 is triggered to form a sensing signal.
In some optional schemes, the sensing member 2 is configured as a pressure sensor, and when the second end 12 of the triggering member 1 is displaced to contact with the sensing member 2, the sensing member 2 is pressed by the second end 12 to form a sensing signal or conduct. Like this, adopt the form of physical contact to trigger response piece 2, the response is accurate high-efficient, and stability is strong.
In particular, the pressure sensor is located in the displacement path of the second end 12 of the trigger member 1, and in combination with the particular form of the trigger member, the pressure sensor is located between the cap and the base plate of the trigger member, i.e. in the displacement path of the cap. When the lower surface of the bottom plate is abutted against the bearing surface, the first end (the end of the rod part far away from the cap part) of the trigger part is subjected to the acting force of the bearing surface and is displaced upwards relative to the bottom plate and is retracted into the bottom plate (inside the through hole formed in the bottom plate) until the first end of the trigger part is flush with the lower surface of the bottom plate, and meanwhile, the second end of the trigger part is displaced upwards relative to the bottom plate until the second end of the trigger part is spaced from the pressure sensor by a certain distance (namely, the cap part is spaced from the pressure sensor); when the bottom plate leaves the bearing surface, the first end of the trigger part loses the acting force of the bearing surface and moves downwards relative to the bottom plate and protrudes out of the first surface of the bottom plate (namely, the rod part of the trigger part extends out of the through hole), and meanwhile, the second end of the trigger part moves downwards relative to the bottom plate until the second end of the trigger part is abutted with the pressure sensor (namely, the cap part of the trigger part is abutted with the pressure sensor), so that the pressure sensor generates a trigger signal, and the warning part generates a warning signal.
The bottom plate is in a suspended state, the second end of the trigger piece is in contact with the pressure sensor, the distance from the first end of the trigger piece protruding out of the first surface of the bottom plate is 1-2mm, in other words, in the state that the bottom plate is abutted to the bearing surface, the first end of the trigger piece is flush with the first surface of the base, and the distance between the second end of the trigger piece and the pressure sensor is 1-2mm. Therefore, after the bottom plate leaves the bearing surface and is 1-2mm away from the bearing surface, the second end of the trigger piece can be in contact with the pressure sensor, and the pressure sensor senses the pressure of the second end of the trigger piece and generates a trigger signal, so that the timeliness and the precision of warning are guaranteed. The length of the rod part of the trigger part can be limited during processing, the whole length of the rod part of the trigger part is calculated according to the thickness of the bottom plate and the thickness or height of the sensor, and the distance between the rod part of the trigger part and the first surface of the bottom plate is 1-2mm.
Of course, the sensor element 2 can also be provided as a distance sensor or as a touch sensor.
In order to improve the warning effect of the warning signal, the warning member 3 is set to be a buzzer, and the buzzer can make a warning sound, so that the worker can obtain the warning signal without observing.
Of course, the warning member 3 may be configured as a control computer in a control room, or a structure of a warning light.
The embodiment of the application provides a crane, which comprises a crane leg raising warning device in any one of the embodiments.
On the structural basis of the above-mentioned crane leg-raising warning device, when the crane works, after the bottom plate 5 of the foot rest supports the realization to the support of operation main part with the loading surface, response piece 2 and warning piece 3 communication connection, when the crane raises the leg, the bottom plate 5 of foot rest leaves the loading surface, the first end 11 of trigger piece 1 loses the support of loading surface, it stretches out the first face of bottom plate 5 to be protruded under the effect of self gravity, second end 12 and the first end 11 synchronous emergence displacement of trigger piece 1 simultaneously, so that second end 12 triggers response piece 2, form the response signal that makes warning piece 3 send the warning, response piece 2 gives the response signal for warning piece 3 again, warning piece 3 sends the warning signal at last, in order to prevent the danger that the crane leads to the landing leg to stick up the leg and overturn because of overloading.
So set up, trigger 1 displacement sets up on the bottom plate 5 of foot dish, leaves the loading end through bottom plate 5 and drives trigger 1 and take place the displacement to make trigger 1 trigger response piece 2, response piece 2 sends the sensing signal and makes warning piece 3 send out warning signal, and then warns the risk of hoist perk leg. Simple structure, with low costs, the installation of being convenient for, the practicality is strong, and can prevent effectively that the hoist leads to the landing leg to stick up the danger that the leg tumbles because of overloading.
In addition, please refer to the above description about the leg tilting warning device of the crane for other beneficial effects brought by the crane, which is not described herein again.
The foregoing describes the general principles of the present application in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present application are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the foregoing disclosure is not intended to be exhaustive or to limit the disclosure to the precise details disclosed.
The block diagrams of devices, apparatuses, systems referred to in this application are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".
It should also be noted that in the devices, apparatuses, and methods of the present application, the components or steps may be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present application.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used for clearly illustrating the technical solutions, and are not used for limiting the protection scope of the present application.
The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.
Claims (10)
1. The utility model provides a hoist perk leg warning device which characterized in that includes:
the trigger piece is arranged on the bottom plate of the supporting foot plate in a displacement mode and comprises a first end capable of protruding out of the first surface of the bottom plate and a second end located on the second surface of the bottom plate, and the first surface of the bottom plate is used for being in contact with the bearing surface;
a sensing member;
the warning piece can be in communication connection with the sensing piece;
wherein, under warning piece and response piece communication connection's state, work as when the bottom plate is liftoff, first end protrusion in the first face of bottom plate, the second end triggers the response piece, warning piece sends the warning.
2. The warning device for the tilted leg of the crane as claimed in claim 1, further comprising an elastic member, wherein the elastic member is connected between the trigger member and the bottom plate and can drive the first end to protrude from the first surface of the bottom plate.
3. The warning device for the raised leg of the crane as claimed in claim 1, wherein the bottom plate is provided with a through hole, and the trigger is slidably disposed in the through hole.
4. The lifting leg warning device of claim 3, wherein the width of the second end of the trigger is greater than the width of the through hole, and the sensing member is located between the second end and the bottom plate and located in a projection area of the second end on the bottom plate.
5. A crane leg-raising warning device according to claim 3, wherein the triggering member includes a rod portion and a cap portion, the rod portion is slidably fitted to the through hole, and the cap portion is connected to an end of the rod portion and forms the second end.
6. The warning device for the raised leg of the crane as claimed in claim 5, further comprising an elastic member, wherein the elastic member comprises an extension spring sleeved outside the rod portion, and two ends of the extension spring are respectively connected to the cap portion and the bottom plate.
7. The warning device for the raised leg of the crane as claimed in claim 1, further comprising a circuit switch, wherein the circuit switch, the sensing member and the warning member are connected in series.
8. The crane leg-raising warning device as claimed in claim 1, wherein the sensing member is a pressure sensor.
9. The warning device for the tilted leg of the crane as claimed in claim 1, wherein the warning member is a buzzer.
10. A crane comprising a crane raise leg warning device as claimed in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222319132.3U CN217867798U (en) | 2022-08-31 | 2022-08-31 | Crane leg-raising warning device and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222319132.3U CN217867798U (en) | 2022-08-31 | 2022-08-31 | Crane leg-raising warning device and crane |
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| Publication Number | Publication Date |
|---|---|
| CN217867798U true CN217867798U (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222319132.3U Active CN217867798U (en) | 2022-08-31 | 2022-08-31 | Crane leg-raising warning device and crane |
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| Country | Link |
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| CN (1) | CN217867798U (en) |
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