CN110646126A - Landing leg reaction force sensor and landing leg type engineering machinery - Google Patents
Landing leg reaction force sensor and landing leg type engineering machinery Download PDFInfo
- Publication number
- CN110646126A CN110646126A CN201911024809.7A CN201911024809A CN110646126A CN 110646126 A CN110646126 A CN 110646126A CN 201911024809 A CN201911024809 A CN 201911024809A CN 110646126 A CN110646126 A CN 110646126A
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- China
- Prior art keywords
- leg
- reaction force
- force sensor
- landing leg
- hole
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 67
- 229920001971 elastomer Polymers 0.000 claims abstract description 23
- 239000000806 elastomer Substances 0.000 claims abstract description 23
- 238000010276 construction Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
Abstract
The invention provides a supporting leg reaction force sensor and a supporting leg type engineering machine, and relates to the technical field of engineering machines. Landing leg reaction force sensor is used for installing on landing leg formula engineering machine's perpendicular landing leg, including strain element and two at least elastomers, the elastomer is used for bearing the landing leg reaction, and strain element sets up in the elastomer in order to be used for detecting the landing leg reaction, and at least two elastomers surround and form and pass the hole, and the landing leg hydro-cylinder that is used for supplying perpendicular landing leg passes through the hole. The landing leg type engineering machinery comprises an operation main body and a plurality of landing leg devices for supporting the operation main body, wherein each landing leg device comprises a horizontal landing leg, a vertical landing leg and the landing leg reaction force sensor; the leg reaction force sensor is sandwiched between the horizontal leg and the flange. The landing leg counter-force sensor of the landing leg type engineering machinery is convenient to assemble.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a supporting leg reaction force sensor and supporting leg type engineering machinery.
Background
The leg type construction machine includes an automobile crane, a concrete pump truck, and the like, and supports the entire operation body by means of a plurality of legs at the time of operation. In order to prevent the engineering machinery from tipping over during operation, the leg type engineering machinery monitors the counter force of the legs through a leg counter force sensor so as to monitor the safety condition of the engineering machinery. However, the existing support leg reaction force sensor is inconvenient to assemble.
Disclosure of Invention
The invention aims to provide a support leg reaction force sensor which is convenient to assemble.
The invention also aims to provide the supporting leg type engineering machinery, and the supporting leg reaction force sensor is convenient to assemble.
Embodiments of the invention may be implemented as follows:
in a first aspect, an embodiment provides a leg reaction force sensor, which is used for being mounted on a vertical leg of a leg-type engineering machine, and includes a strain element and at least two elastic bodies, wherein the elastic bodies are used for bearing leg reaction forces, the strain element is disposed in the elastic bodies and used for detecting leg reaction forces, and the at least two elastic bodies surround to form a through hole, and the through hole is used for a leg cylinder of the vertical leg to pass through.
In an alternative embodiment, the leg reaction force sensor comprises two resilient bodies abutting each other to enclose the through hole.
In an alternative embodiment, the two elastic bodies are arranged symmetrically to each other.
In an alternative embodiment, one strain element is provided per elastomer, and two strain elements are arranged symmetrically about the center of the passage opening.
In an alternative embodiment, the resilient bodies have arcuate surfaces, the arcuate surfaces of at least two of the resilient bodies cooperatively defining the perforation.
In an alternative embodiment, each elastomer is provided with at least two bolt holes.
In an optional embodiment, the elastomer comprises a fixed block and arc plates connected to the fixed block, at least two arc plates surround to form a through hole, the bolt hole is formed in the fixed block, and the strain element is embedded in the arc plates.
In an alternative embodiment, one end of the arc-shaped plate protrudes out of the fixed block in the stress direction of the elastic body.
In an alternative embodiment, the arc-shaped plate is provided with a mounting hole for mounting the strain element, and the opening of the mounting hole faces to the through hole.
In a second aspect, an embodiment provides a leg-type engineering machine, including a working body and a plurality of leg devices for supporting the working body, where the leg devices include a horizontal leg, a vertical leg, and the leg reaction force sensor, the horizontal leg is connected to the working body, the vertical leg is vertically connected to the horizontal leg through a flange to be supported on the ground, and the flange is located below the horizontal leg; the leg reaction force sensor is sandwiched between the horizontal leg and the flange.
The embodiment of the invention has the beneficial effects that:
landing leg reaction force sensor is used for installing on landing leg formula engineering machine's perpendicular landing leg, including strain element and two at least elastomers, the elastomer is used for bearing the landing leg reaction, and strain element sets up in the elastomer in order to be used for detecting the landing leg reaction, and at least two elastomers surround and form and pass the hole, and the landing leg hydro-cylinder that is used for supplying perpendicular landing leg passes through the hole. The landing leg type engineering machinery comprises an operation main body and a plurality of landing leg devices for supporting the operation main body, wherein each landing leg device comprises a horizontal landing leg, a vertical landing leg and the landing leg reaction force sensor; the leg reaction force sensor is sandwiched between the horizontal leg and the flange. Landing leg reaction force sensor is formed by two at least elastomers concatenation, and the landing leg hydro-cylinder that supplies perpendicular landing leg is passed through the hole that it encloses, and each elastomer is used for bearing the landing leg reaction, and the landing leg reaction can be detected to the strain element of setting in the elastomer. The multi-valve structure of the supporting leg sensor is convenient to install and disassemble from the side edge, the end part of the supporting leg oil cylinder is not required to be sleeved, and the assembly is convenient. Each elastic body is clamped between the horizontal supporting leg and the flange in the supporting leg type engineering machinery, so that supporting leg counter force is measured, and the supporting leg counter force sensor is convenient to assemble.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of a first view of a leg reaction force sensor according to an embodiment of the invention;
FIG. 2 is an exploded view of an elastomer in an embodiment of the invention;
FIG. 3 is a schematic diagram of a second perspective view of a leg reaction force sensor according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a leg-type construction machine according to an embodiment of the present invention.
Icon: 100-leg reaction force sensor; 110-a strain element; 130-an elastomer; 132-through the aperture; 133-an arcuate surface; 134-bolt holes; 135-fixing block; 136-an arc plate; 137-mounting holes; 200-a leg type engineering machine; 210-vertical legs; 212-a flange; 220-a job body; 230-horizontal leg.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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 invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Referring to fig. 1 and 2, the present embodiment provides a leg reaction force sensor 100 for being mounted on a vertical leg 210 of a leg-type construction machine 200. The leg reaction force sensor 100 includes a strain element 110 and at least two elastic bodies 130, the elastic bodies 130 are used for bearing leg reaction forces, and the strain element 110 is disposed in the elastic bodies 130 for detecting leg reaction forces. At least two elastic bodies 130 surround to form a through hole 132, and the through hole 132 is used for allowing a leg oil cylinder of the vertical leg 210 to pass through.
The leg cylinder is cylindrical, and in order to better fit the leg cylinder of the vertical leg 210, in this embodiment, the elastic bodies 130 have arc surfaces 133, and the arc surfaces 133 of at least two elastic bodies 130 together enclose the through hole 132, and the through hole 132 is a circular hole. In other embodiments, the elastic bodies 130 may not be provided with the arc-shaped surfaces 133, but have bent surfaces, and the bent surfaces of at least two elastic bodies 130 together define the through hole 132, and in this case, the through hole 132 is a polygonal hole, so that it is only necessary to ensure that the through hole 132 does not obstruct the leg cylinder from passing through.
In the present embodiment, the leg reaction force sensor 100 includes two elastic bodies 130, and the two elastic bodies 130 abut against each other to enclose the through hole 132. Each of the elastic bodies 130 is provided with at least two bolt holes 134, the two bolt holes 134 are spaced apart from each other, and the two bolt holes 134 are penetrated by bolts to fix the elastic bodies 130 to the vertical legs 210. In other embodiments, 3 spaced bolt holes 134 may be provided for each spring 130, only to ensure that each spring 130 is stably attached to the vertical leg 210. In other embodiments, the leg reaction force sensor 100 may also include 3 or 4 elastic bodies 130, and 3 elastic bodies 130 are connected in the circumferential direction to form a through hole 132, so that it is only necessary to ensure that the through hole 132 does not interfere with the movement of the leg cylinder. When the number of the elastic bodies 130 is large, that is, the volume of each elastic body 130 is small, only one bolt hole 134 may be provided for each elastic body 130, and it is only necessary to firmly fix each elastic body 130 to the vertical leg 210.
In the present embodiment, the two elastic bodies 130 are symmetrically arranged with respect to each other, that is, the two elastic bodies 130 have the same structure, and the arc surfaces 133 of the two elastic bodies 130 occupy 180 ° in the circumferential direction. When the two resilient bodies 130 are butted together, a line passing through the butt seam on both sides of the hole 132 bisects the entire leg reaction force sensor 100. The same elastomer 130 facilitates manufacture using the same mold, which may reduce mold cost. In other embodiments, the two elastic bodies 130 may be asymmetric, that is, a connection line passing through the butt seam on both sides of the hole 132 does not bisect the entire leg reaction force sensor 100, that is, one of the arc surfaces 133 of the two elastic bodies 130 circumferentially occupies an angle greater than 180 °, and the other is smaller than 180 °, so long as the two elastic bodies 130 can be butted to enclose the hole 132. In this embodiment, the end surfaces of the two elastic bodies 130 passing through the hole 132 in the circumferential direction are both vertical planes and are attached to each other, the hole 132 is a 360-degree closed hole, in other embodiments, the hole 132 can also have a certain gap in the circumferential direction without being closed, and only the connection stability of each elastic body 130 needs to be ensured and the counterforce of the leg can be measured. It is understood that in other embodiments, the end surfaces of the elastic bodies 130 in the circumferential direction may not be flat, but one of the elastic bodies 130 is provided with a groove in the end surface passing through the hole 132 in the circumferential direction, and the other elastic body 130 is provided with a protrusion corresponding to the groove in the end surface passing through the hole 132 in the circumferential direction, when the two elastic bodies 130 are butted together, the groove and the protrusion may cooperate with each other to facilitate quick limiting in installation, so that the bolt hole 134 can quickly reach a preset position after the elastic bodies 130 are spliced, so as to allow a bolt to pass through.
In this embodiment, the elastic body 130 includes a fixing block 135 and arc plates 136 connected to the fixing block 135, and at least two arc plates 136 surround to form the through hole 132. Specifically, in the radial direction of the through hole 132, the fixing block 135 is located outside the arc-shaped plates 136, the inner side surfaces of the arc-shaped plates 136 are arc-shaped surfaces 133, and two ends of the two arc-shaped plates 136 in the circumferential direction are butted in a one-to-one correspondence manner to enclose the closed through hole 132. The side of the fixing block 135 away from the arc plate 136 is a square edge, so that the whole leg reaction force sensor 100 is in the structural form of a square plate with a hole in the center.
One strain element 110 is provided for each elastic body 130, and the two strain elements 110 are symmetrically arranged about the center passing through the hole 132, which facilitates the strain elements 110 to detect the leg reaction force more accurately. When the leg reaction force sensor 100 includes 3 or more elastic bodies 130, one strain element 110 is provided for each elastic body 130, and the strain elements 110 in each elastic body 130 are arranged at even intervals in the circumferential direction. Alternatively, when 2 or more strain elements 110 are provided in each elastic body 130, all the strain elements 110 are provided at regular intervals in the circumferential direction passing through the hole 132, thereby improving the detection accuracy of the strain elements 110.
Referring to fig. 2 and 3, in the present embodiment, in order to prevent the strain element 110 from being affected by the pre-tightening force of the bolt, the bolt hole 134 is disposed in the fixing block 135, and the strain element 110 is embedded in the arc plate 136. The bolt holes 134 are formed in the outer edge positions, far away from the arc-shaped plate 136, of the fixing blocks 135, two bolt holes 134 are formed in each fixing block 135, the two bolt holes 134 are arranged at intervals, and the 4 bolt holes 134 are located in four corners of the supporting leg reaction force sensor 100 respectively. Thus, the strain element 110 and the bolt hole 134 can be displaced from each other in the radial direction passing through the hole 132. When the elastic body 130 is fixed on the vertical supporting leg 210 through a bolt, the fixed block 135 of the outer ring of the elastic body 130 directly bears the pretightening force of the bolt, and the arc-shaped plate 136 of the inner ring mainly bears the counter force of the supporting leg, so that the direct influence of the pretightening force of the bolt on the arc-shaped plate 136 of the inner ring is reduced. In order to further increase the sensitivity of the inner ring arc-shaped plate 136 to the counterforce of the support leg, one end of the arc-shaped plate 136 protrudes out of the fixing block 135 in the force-bearing direction of the elastic body 130. In the present embodiment, the force receiving direction refers to the extending direction of the vertical leg 210, i.e., the up-down direction. When assembling, the end of the arc plate 136 protruding from the fixing block 135 is directly pressed, so that the strain element 110 disposed in the arc plate 136 is more sensitive to the detection of the counterforce of the leg. In other embodiments, the outer surface of the arc plate 136 may be flush with the fixing block 135 in the force-receiving direction, so that the actual detection sensitivity requirement is satisfied. In this embodiment, arc 136 and fixed block 135 are stainless steel, and elasticity is good, corrosion-resistant, sensitivity and stability are good, are applicable to abominable field work environment, and arc 136 and fixed block 135 integrated into one piece to further guarantee the structural strength of elastomer 130.
In an optional embodiment, the arc plate 136 is provided with a mounting hole 137 for mounting the strain element 110, and an opening of the mounting hole 137 faces the through hole 132, so as to avoid opening from the up-down direction, so that the strain element 110 is sealed and protected in the up-down direction, i.e., the force-bearing direction, the service life of the strain element 110 is prolonged, and meanwhile, the mounting and maintenance of the strain element 110 are facilitated. In other embodiments, the arc plate 136 may not be provided with the mounting hole 137 with an opening, so that the strain element 110 is directly embedded inside the arc plate 136, and the strain element 110 is completely wrapped by the arc plate 136, thereby realizing the all-directional protection of the strain element 110. In this embodiment, the strain element 110 is a piezoresistive strain gauge, and in other embodiments, the strain element 110 may also be an optical strain gauge or the like. The signal output line connected with the strain element 110 passes through the arc-shaped plate 136 and the fixing block 135 and extends out of the support leg reaction force sensor 100, so that the signal output line is connected with an external processor, and the processor sends processed data to a display device, so that an operator can conveniently know the support leg reaction force situation at any time.
Referring to fig. 4, the present embodiment provides a leg-type construction machine 200, which includes a working body 220 and a plurality of leg devices for supporting the working body 220, wherein the leg devices include a horizontal leg 230, a vertical leg 210 and a leg reaction force sensor 100. The horizontal leg 230 is connected to the work body 220, and the vertical leg 210 is vertically connected to the horizontal leg 230 through the flange 212 to be supported on the ground. The flange 212 is fixed to the outside of the cylinder body of the leg cylinder of the vertical leg 210, the flange 212 is located below the horizontal leg 230, the flange 212 is locked to the horizontal leg 230 by 4 bolts, the bolts simultaneously pass through the flange 212 and the bolt holes 134 in the elastic bodies 130, each elastic body 130 is fixed, and the leg reaction force sensor 100 is interposed between the horizontal leg 230 and the flange 212, so that leg reaction forces can be detected.
The operating principle of the leg reaction force sensor 100 is as follows:
each elastic body 130 of the leg reaction force sensor 100 is placed between the horizontal leg 230 and the flange 212 from the side of the leg cylinder, respectively, so that the end of the arc plate 136 of the inner ring of the elastic body 130 protrudes upward to be in contact with the horizontal leg 230. The two elastic bodies 130 are butted together to form a through hole 132 for the support leg oil cylinder to pass through. Meanwhile, bolts threaded through the flange 212 pass through the bolt holes 134 of each elastic body 130 and then are connected with the horizontal leg 230, so that each elastic body 130 is fixed between the horizontal leg 230 and the flange 212, that is, the leg reaction force sensor 100 is fixed between the horizontal leg 230 and the flange 212 and is used for bearing leg reaction force. The strain element 110 embedded in the elastic body 130 can measure the counterforce of the supporting leg due to the deformation of the elastic body 130, and transmits the detected data to the processor through the signal output line for processing and then displays the data by the display device, so that an operator can conveniently know the counterforce condition of the supporting leg at any time, and the overturning of the vehicle body is effectively prevented.
Landing leg reaction force sensor 100 is formed by two at least elastomers 130 concatenations, can detect the landing leg reaction force, conveniently assembles and dismantles to conveniently detect the landing leg reaction force. The resilient body 130 encloses a bore 132 through which the leg cylinder of the vertical leg 210 passes without interfering with the normal operation of the cylinder.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The utility model provides a landing leg reaction force sensor for install on the perpendicular landing leg of landing leg formula engineering machine tool, its characterized in that includes strain element and two at least elastomers, the elastomer is used for bearing the landing leg reaction force, strain element set up in the elastomer in order to be used for detecting the landing leg reaction force, two at least elastomers surround and form and pass the hole, it is used for supplying to pass through the hole the landing leg hydro-cylinder of perpendicular landing leg passes.
2. The leg reaction force sensor according to claim 1, wherein the leg reaction force sensor includes two of the elastic bodies abutting against each other to enclose the passing hole.
3. The leg reaction force sensor according to claim 2, wherein the two elastic bodies are arranged symmetrically to each other.
4. The leg reaction force sensor according to claim 2, wherein one strain element is provided for each of the elastic bodies, and two strain elements are arranged symmetrically about a center of the through hole.
5. The leg reaction sensor of claim 1 wherein the resilient bodies have arcuate surfaces, the arcuate surfaces of the at least two resilient bodies collectively defining the through hole.
6. The leg reaction force sensor according to claim 1, wherein each of the elastic bodies is provided with at least two bolt holes.
7. The leg reaction force sensor as claimed in claim 6, wherein the elastic body comprises a fixing block and arc plates connected to the fixing block, at least two of the arc plates surround to form the through hole, the bolt hole is provided in the fixing block, and the strain element is embedded in the arc plates.
8. The leg reaction force sensor as claimed in claim 7, wherein one end of the arc-shaped plate protrudes from the fixing block in a force-receiving direction of the elastic body.
9. The leg reaction force sensor according to claim 7, wherein the arc-shaped plate is opened with a mounting hole for mounting the strain element, and an opening of the mounting hole faces the through hole.
10. A leg type construction machine comprising a working body and a plurality of leg devices for supporting the working body, the leg devices comprising a horizontal leg attached to the working body, a vertical leg attached vertically to the horizontal leg through a flange to be supported on the ground, and the leg reaction force sensor of any one of claims 1 to 9; the leg reaction force sensor is sandwiched between the horizontal leg and the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911024809.7A CN110646126A (en) | 2019-10-25 | 2019-10-25 | Landing leg reaction force sensor and landing leg type engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911024809.7A CN110646126A (en) | 2019-10-25 | 2019-10-25 | Landing leg reaction force sensor and landing leg type engineering machinery |
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| CN110646126A true CN110646126A (en) | 2020-01-03 |
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| CN201911024809.7A Pending CN110646126A (en) | 2019-10-25 | 2019-10-25 | Landing leg reaction force sensor and landing leg type engineering machinery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113108970A (en) * | 2021-03-03 | 2021-07-13 | 徐州工程学院 | Supporting leg counter-force measuring device and measuring method |
| CN114252181A (en) * | 2020-09-22 | 2022-03-29 | 中联重科股份有限公司 | Counter force measuring method and device, stress sensor assembly and engineering machinery |
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