Supporting force sensor applied to overhanging supporting leg for preventing mechanical tipping

Abstract

The utility model discloses a supporting force sensor applied to an overhanging support leg for preventing mechanical tipping, which comprises a sensor elastic body, the elastic body comprises a supporting part, a strain part, a connecting part and an electric control part, the strain part is provided with a strain cabin, the electric control part is provided with an electronic cabin, the periphery of a cabin opening of the strain cabin is provided with a sealing groove, and a first sealing ring is arranged in the sealing groove. The electric control part is provided with a ring groove, two groups of strain detection bridges are arranged in the strain cabin, two groups of amplification protection circuits are arranged in the electronic cabin, the first group of strain detection bridges is connected with the first group of amplification protection circuits, and the second group of strain detection bridges is connected with the second group of amplification protection circuits. According to the utility model, a sealing structure is added on the structure of the sensor, and an actually measured product has an extremely high IP protection level, so that the sensor meets the requirements of severe working conditions; in addition, through the redundant design of other parts except the sensor elastomer, after one path is abnormal, the other path can continue to work, and the service life of the product is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a supporting force sensor used for outriggers to prevent mechanical tipping. Background Art

[0002] Many existing support force sensors do not have sufficient protection levels to meet the needs of some harsh working conditions. For example, long-term outdoor use on rainy days, long-term use in high humidity environments, etc., due to poor sealing protection, the sensor is damaged. In addition, the support force sensor is large in size and relatively expensive overall, and the sensor's plug, internal circuit, and internal patch are all prone to failure. Once the above-mentioned prone to failure points fail, the entire sensor will become unusable, delaying the project progress, and the cost of replacing the support force sensor is high. Utility Model Content

[0003] To this end, one purpose of the utility model is to provide a support force sensor used for outriggers to prevent mechanical tipping, so as to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A support force sensor used for an outrigger to prevent a machine from tipping over comprises a sensor elastomer, wherein the sensor elastomer comprises a support portion, a strain portion, a connection portion and an electric control portion which are sequentially connected from bottom to top, wherein a strain cabin is provided in the strain portion, an electronic cabin is provided in the electric control portion, a sealing groove is provided around the hatch of the strain cabin, a first sealing ring is provided in the sealing groove, and an annular groove is provided in the electric control portion, a first group of strain detection bridges and a second group of strain detection bridges are provided in the strain cabin, a first group of amplification protection circuits and a second group of amplification protection circuits are provided in the electronic cabin, the first group of strain detection bridges are connected to the first group of amplification protection circuits, and the second group of strain detection bridges are connected to the second group of amplification protection circuits.

[0006] Furthermore, the connecting portion is provided with a first wire outlet hole and a second wire outlet hole, the first wire outlet hole and the second wire outlet hole are provided with a second sealing ring, the connecting portion is provided with a first wire through hole and a second wire through hole, the first wire outlet hole is connected to the electronic cabin through the first wire through hole, and the second wire outlet hole is connected to the electronic cabin through the second wire through hole.

[0007] Furthermore, there are two annular grooves, which are arranged side by side on the side of the electric control part and surround the electric control part.

[0008] Furthermore, the sensor also includes a circuit board, the first group of amplification protection circuits and the second group of amplification protection circuits are both arranged on the circuit board, and the circuit board is fixed in the electronic compartment.

[0009] Furthermore, the connecting portion is provided with a plurality of connecting holes, the connecting holes penetrate through the connecting portion, and the plurality of connecting holes are evenly distributed around the connecting portion.

[0010] Furthermore, the sensor also includes a third wire-passing hole, and the strain cabin is connected to the electronic cabin through the third wire-passing hole.

[0011] Furthermore, the sensor also includes a strain cabin cover plate, a plurality of fixing holes are provided around the sealing groove, and the strain cabin cover plate is fixedly installed at the hatch of the strain cabin through the fixing holes.

[0012] Furthermore, the strain cabin cover is provided with a flange corresponding to the sealing groove, and when the strain cabin cover is fixedly installed at the hatch of the strain cabin, the flange is just embedded in the sealing groove.

[0013] Furthermore, the sensor also includes an electronic compartment cover, and the electronic compartment cover is arranged at the hatch of the electronic compartment.

[0014] Furthermore, the supporting portion, the strain portion, the connecting portion and the electronic control portion are integrated, and the sensor elastomer is made of titanium alloy.

[0015] Therefore, the utility model has the following beneficial effects:

[0016] The utility model discloses a supporting force sensor used for outriggers to prevent mechanical tipping. A sealing structure is added to the structure of the sensor. The measured product has an extremely high IP protection grade, so that the sensor can meet the requirements of harsh working conditions. In addition, through the redundant design of components other than the sensor elastomer, after an abnormality occurs in one circuit, the other circuit can continue to work, effectively extending the service life of the product.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is an axonometric diagram of the support force sensor of the utility model;

[0020] Figure 2It is a structural schematic diagram of the support force sensor of the utility model without the strain cabin cover plate and the electronic cabin cover;

[0021] Figure 3 It is a front view of the support force sensor of the utility model;

[0022] Figure 4 It is a top view of the support force sensor of the utility model;

[0023] Figure 5 yes Figure 3 AA section view shown;

[0024] In the figure: 1. supporting part; 2. strain part; 3. connecting part; 4. electric control part; 5. strain cabin; 6. electronic cabin; 7. sealing groove; 8. ring groove; 9. first wire outlet hole; 10. second wire outlet hole; 11. second sealing ring; 12. first wire hole; 13. second wire hole; 14. connecting hole; 15. third wire hole; 16. strain cabin cover; 17. fixing hole; 18. electronic cabin cover. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figure 1-Figure 5 As shown, a support force sensor includes a sensor elastomer, which includes a support part 1, a strain part 2, a connecting part 3 and an electronic control part 4 connected in sequence from bottom to top, a strain cabin 5 is provided in the strain part 2, an electronic cabin 6 is provided in the electronic control part 4, a sealing groove 7 is provided around the hatch of the strain cabin 5, a first sealing ring is provided in the sealing groove 7, an annular groove 8 is provided in the electronic control part 4, a first group of strain detection bridges and a second group of strain detection bridges are provided in the strain cabin 5, a first group of amplification protection circuits and a second group of amplification protection circuits are provided in the electronic cabin 6, the first group of strain detection bridges are connected to the first group of amplification protection circuits, and the second group of strain detection bridges are connected to the second group of amplification protection circuits.

[0028] The utility model discloses a supporting force sensor used for outriggers to prevent mechanical tipping. A sealing structure is added to the structure of the sensor. The measured product has an extremely high IP protection grade, so that the sensor can meet the requirements of harsh working conditions. In addition, through the redundant design of components other than the sensor elastomer, after an abnormality occurs in one circuit, the other circuit can continue to work, effectively extending the service life of the product.

[0029] Further, such as Figure 5 As shown, the connecting portion 3 is provided with a first wire outlet hole 9 and a second wire outlet hole 10, the first wire outlet hole 9 and the second wire outlet hole 10 are provided with a second sealing ring 11, and the connecting portion 3 is provided with a first wire through hole 12 and a second wire through hole 13. The first wire outlet hole 9 is connected to the electronic cabin 6 through the first wire through hole 12, and the second wire outlet hole 10 is connected to the electronic cabin 6 through the second wire through hole 13.

[0030] The first wire outlet hole 9 and the second wire outlet hole 10 are used for installing a plug, which is not shown in the figure. The plug can specifically be a waterproof plug, which is connected to the circuit board in the electronic compartment 6. The first wire hole 12 and the second wire hole 13 are used for arranging the connection between the waterproof plug and the circuit board. The measurement result of the force sensor is output through the cable connected to the plug.

[0031] As an implementation method, the plug model can be selected as an M12A1 12-core waterproof aviation plug.

[0032] Further, such as Figure 2 As shown, there are two annular grooves 8, which are arranged side by side on the side of the electronic control unit 4 and around the electronic control unit 4. The annular grooves 8 cooperate with the electronic compartment cover 18 to increase the sealing performance of the electronic compartment.

[0033] Furthermore, the sensor also includes a circuit board, and the first group of amplification protection circuits and the second group of amplification protection circuits are both arranged on the circuit board, and the circuit board is fixed in the electronic compartment 6.

[0034] The first set of strain detection bridges and the second set of strain detection bridges are used to detect the deformation of the elastic strain part 2 of the sensor to detect the force. The strain detection bridge circuit and the amplification protection circuit are both existing mature technologies, and the utility model will not be described in detail here.

[0035] Further, such as Figure 4 As shown, a plurality of connection holes 14 are provided on the connection part 3 , and the connection holes 14 penetrate through the connection part 3 , and the plurality of connection holes 14 are evenly distributed around the connection part 3 .

[0036] The force sensor of the utility model is specially designed for supporting structures, and is mainly used for force and overload detection of oil cylinder supporting structures to prevent mechanical tipping. When using the supporting force sensor of the utility model, the entire sensor is installed at the bottom of the supporting oil cylinder, the connecting part 3 above the sensor is used to connect with the supporting oil cylinder, the electronic cabin 6 is embedded in the end of the sensor connected to the oil cylinder, and the supporting part 1 below the sensor can be supported on the ground by a base matching the supporting part 1 to achieve force and overload detection.

[0037] As an implementation method, Figure 1 , Figure 2 and Figure 3 As shown, the support portion 1 is specifically spherical.

[0038] As an implementation manner, the support portion 1 may also be in a rectangular parallelepiped shape.

[0039] As an implementation manner, the support portion 1 may also be in a cube shape.

[0040] That is to say, the specific shape of the support portion 1 can be selectively set according to actual needs, and any shape of the support portion 1 that can achieve good support for the overall structure of the sensor elastomer is within the protection scope of the present utility model.

[0041] Further, such as Figure 5 As shown, the sensor further includes a third wire-through hole 15 , and the strain cabin 5 is connected to the electronic cabin 6 through the third wire-through hole 15 .

[0042] The amplifying protection circuit of the circuit board in the electronic compartment 6 is electrically connected to the strain detection bridge in the strain compartment 5 , and the third wire-passing hole 15 is used to arrange the wiring between the amplifying protection circuit and the strain detection bridge.

[0043] Further, such as Figure 1 and Figure 2 As shown, the sensor further includes a cover plate of the strain cabin 5 , and a plurality of fixing holes 17 are provided around the sealing groove 7 , and the cover plate of the strain cabin 5 is fixedly installed at the hatch of the strain cabin 5 through the fixing holes 17 .

[0044] Specifically, Figure 2 As shown, there are 18 fixing holes 17 which are evenly distributed around the opening of the strain cabin 5 . A larger number of fixing holes 17 can make the cover plate of the strain cabin 5 and the opening of the strain cabin 5 more tightly covered.

[0045] As an implementation manner, there may be 20 fixing holes 17 , which are evenly distributed around the opening of the strain chamber 5 .

[0046] That is to say, the present invention does not limit the specific number of fixing holes 17, and technical personnel in this field can selectively set them according to actual needs. Any number of fixing holes 17 that can achieve a tighter covering of the strain cabin 5 cover and the strain cabin 5 opening is within the protection scope of the present invention.

[0047] Specifically, an internal thread is provided in the fixing hole 17 , and the strain cabin cover plate 16 can be installed and fixed by means of screws with external threads cooperating with the fixing hole 17 .

[0048] Furthermore, the cover plate of the strain cabin 5 is provided with a flange corresponding to the sealing groove 7, and when the cover plate of the strain cabin 5 is fixedly installed at the hatch of the strain cabin 5, the flange is just embedded in the sealing groove 7. The flange structure is not shown in the figure.

[0049] As an implementation manner, when the strain cabin 5 cover and the strain cabin 5 opening cover are closed, the sealing groove 7 is also filled with sealant.

[0050] In one embodiment, the thickness of the flange is 1 mm, the width of the sealing groove 7 is 1.1 mm, the height of the flange is 5 mm, the depth of the sealing groove 7 is 5 mm, and the space between the flange and the sealing groove 7 is filled with sealant.

[0051] In one embodiment, the thickness of the flange is 2 mm, the width of the sealing groove 7 is 2.1 mm, the height of the flange is 7 mm, the depth of the sealing groove 7 is 7 mm, and the space between the flange and the sealing groove 7 is filled with sealant.

[0052] In one embodiment, the thickness of the flange is 1.5 mm, the width of the sealing groove 7 is 1.5 mm, the height of the flange is 7 mm, the depth of the sealing groove 7 is 7 mm, and the space between the flange and the sealing groove 7 is filled with sealant.

[0053] The thickness of the flange may also be equal to the width of the sealing groove 7 , and the height of the flange may be less than the depth of the sealing groove 7 .

[0054] In one embodiment, the thickness of the flange is 1 mm, the width of the sealing groove 7 is 1 mm, the height of the flange is 5 mm, the depth of the sealing groove 7 is 7 mm, and the space between the flange and the sealing groove 7 is filled with sealant.

[0055] In one embodiment, the thickness of the flange is 2 mm, the width of the sealing groove 7 is 2 mm, the height of the flange is 7 mm, the depth of the sealing groove 7 is 9 mm, and the space between the flange and the sealing groove 7 is filled with sealant.

[0056] In one embodiment, the thickness of the flange is 1.5 mm, the width of the sealing groove 7 is 1.5 mm, the height of the flange is 7 mm, the depth of the sealing groove 7 is 8 mm, and the space between the flange and the sealing groove 7 is filled with sealant.

[0057] That is to say, the specific thickness and height of the flange and the specific height and width of the sealing groove 7 in the present invention are not subject to specific restrictions and can be selectively set according to actual conditions. The specific thickness and height of the flange and the specific height and width of the sealing groove 7 that can realize the flange being embedded in the sealing groove 7 and the sealant being filled between the flange and the sealing groove 7 are within the protection scope of the present invention.

[0058] Furthermore, the sensor also includes an electronic compartment cover 18 , which is disposed at the hatch of the electronic compartment 6 .

[0059] As an embodiment, the electronic compartment 6 is cylindrical, and the electronic compartment cover 18 is buckled on the hatch of the electronic compartment 6 similar to a bottle cap, and an annular flange matching the annular groove 8 is provided on the inner side of the electronic compartment cover 18, and the annular flange can be just embedded in the annular groove 8, so that the electronic compartment has better airtightness. Like the sealing groove 7 and flange of the strain compartment 5, the specific thickness, height, etc. of the annular groove 8 of the electronic compartment 6 and the annular flange of the electronic compartment cover 18 can also be set as needed, and are not specifically limited here.

[0060] Furthermore, the supporting part 1, the strain part 2, the connecting part 3 and the electronic control part 4 are integrated, and the sensor elastomer is made of titanium alloy.

[0061] The support force sensor of the utility model adds high-level protection measures to the strain cabin 5, the electronic cabin 6, the outlet terminal, etc. through structural design, so as to achieve a high IP protection level of the sensor.

[0062] The supporting force sensor of the utility model realizes the redundancy of the strain detection bridge, the amplification and protection circuit, and the output line through the redundant design. After an abnormality occurs in one line, the other line can continue to work.

[0063] The difference between the utility model product and the traditional support force sensor is that multiple sealing ring sealing structures are added to the structure of the sensor. The measured product has a very high IP protection level. In addition, through the redundant design of other components except the elastomer, including: elastomer, strain gauges (two groups) pasted on the elastomer, Wheatstone bridge detection circuits (two groups), control circuits (two groups of amplification protection circuits), plugs and cables (two groups), the service life of the product is extended.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation 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.

[0065] It is not difficult for those skilled in the art to understand that the utility model includes any combination of the utility model content and the specific implementation method part of the above specification and the various parts shown in the drawings. Due to the limited space and to make the specification concise, the various schemes composed of these combinations are not described one by one. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0066] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A support force sensor used for outriggers to prevent mechanical tipping, comprising a sensor elastic body, characterized in that: The sensor elastomer includes a supporting part, a strain part, a connecting part and an electronic control part which are connected in sequence from bottom to top. A strain cabin is arranged in the strain part, an electronic cabin is arranged in the electronic control part, a sealing groove is arranged around the hatch of the strain cabin, a first sealing ring is arranged in the sealing groove, and an annular groove is arranged in the electronic control part. A first group of strain detection bridges and a second group of strain detection bridges are arranged in the strain cabin, a first group of amplification protection circuits and a second group of amplification protection circuits are arranged in the electronic cabin, the first group of strain detection bridges are connected to the first group of amplification protection circuits, and the second group of strain detection bridges are connected to the second group of amplification protection circuits.

2. A support force sensor for preventing mechanical tipping of an outrigger according to claim 1, characterized in that: The connecting portion is provided with a first wire outlet hole and a second wire outlet hole, and the first wire outlet hole and the second wire outlet hole are provided with a second sealing ring. The connecting portion is provided with a first wire through hole and a second wire through hole, and the first wire outlet hole is connected to the electronic cabin through the first wire through hole, and the second wire outlet hole is connected to the electronic cabin through the second wire through hole.

3. A support force sensor for preventing mechanical tipping of an outrigger according to claim 1, characterized in that: There are two annular grooves, which are arranged side by side on the side of the electric control part and surround the electric control part.

4. The support force sensor used for outriggers to prevent mechanical tipping according to claim 1, characterized in that: It also includes a circuit board, on which the first group of amplifying and protecting circuits and the second group of amplifying and protecting circuits are both arranged, and the circuit board is fixed in the electronic compartment.

5. The support force sensor used for outriggers to prevent mechanical tipping according to claim 1, characterized in that: The connecting portion is provided with a plurality of connecting holes, the connecting holes penetrate through the connecting portion, and the plurality of connecting holes are evenly distributed around the connecting portion.

6. The support force sensor used for outriggers to prevent mechanical tipping according to claim 1, characterized in that: It also includes a third wire-through hole, and the strain cabin is connected to the electronic cabin through the third wire-through hole.

7. A support force sensor for preventing mechanical tipping of an outrigger according to claim 1, characterized in that: It also includes a strain cabin cover plate, and a plurality of fixing holes are arranged around the sealing groove, and the strain cabin cover plate is fixedly installed at the hatch of the strain cabin through the fixing holes.

8. The support force sensor used for outriggers to prevent mechanical tipping according to claim 7, characterized in that: The strain cabin cover plate is provided with a flange corresponding to the sealing groove. When the strain cabin cover plate is fixedly installed at the hatch of the strain cabin, the flange is just embedded in the sealing groove.

9. The support force sensor used for outriggers to prevent mechanical tipping according to claim 1, characterized in that: It also includes an electronic compartment cover, which is arranged at the hatch of the electronic compartment.

10. A support force sensor for preventing mechanical tipping of an outrigger according to any one of claims 1 to 9, characterized in that: The supporting part, the strain part, the connecting part and the electric control part are integrated, and the sensor elastomer is made of titanium alloy.

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