CN213209320U - Parallel type tension sensor - Google Patents
Parallel type tension sensor Download PDFInfo
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- CN213209320U CN213209320U CN202022219655.1U CN202022219655U CN213209320U CN 213209320 U CN213209320 U CN 213209320U CN 202022219655 U CN202022219655 U CN 202022219655U CN 213209320 U CN213209320 U CN 213209320U
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Abstract
A parallel type tension sensor comprises an elastic body and a measuring assembly, wherein the left part and the right part of the elastic body are symmetrically provided with a first pin shaft hole and a second pin shaft hole; the two tension sensors are longitudinally arranged at intervals; two first transverse mounting grooves are formed in the right end of the left connecting piece in the longitudinal direction, and first through holes are formed in positions corresponding to the first pin shaft holes; the left connecting piece is sleeved on the outer sides of the left parts of the two elastic bodies through two first transverse mounting grooves and connected through a first shaft sleeve and a first pin shaft which are inserted between the first through hole and the first pin shaft hole; the left end of the right connecting piece is longitudinally provided with two second transverse mounting grooves, and a second through hole is formed in the position corresponding to the second pin shaft hole; the right side connecting piece is sleeved on the outer sides of the right parts of the two elastomers through two second transverse mounting grooves and connected through a second shaft sleeve and a second pin shaft which are inserted between the second through hole and the second pin shaft hole. The sensor can realize a large-scale measurement by utilizing the elastomer with small size and small body.
Description
Technical Field
The utility model belongs to the technical field of the sensor, concretely relates to parallel force sensor.
Background
The force sensor is widely applied to port hoisting equipment and mobile hoisting equipment. The force sensor installed in the crane is used for measuring a hoisting load and judging whether the load is in the working range of the crane or not, so that the working safety of the crane is ensured.
Force sensors are generally composed of an elastomer and a measuring assembly (strain gauge and associated electrical equipment). The elastic body is a core part of the force sensor and is used for measuring the stress, the material selection, the heat treatment and the machining have high requirements, and the manufacturing cost of the elastic body is high. With the improvement of related technologies such as crane design and production and the increase of demand of the society on large-tonnage cranes, the hoisting weight of the cranes is also developed to the level of kilotons, which requires that the force sensors have corresponding measuring ranges. Increasing the range of the force sensor requires a corresponding increase in the size and volume of the elastomer, for example, a single force sensor with a range of about one thousand tons may have an elastomer length of more than one meter, which can be difficult to forge and heat treat the blank, resulting in a geometric cost increase. In addition, the excessive weight of the sensor will cause great difficulty in the early production installation and the later maintenance.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides a parallel force sensor, this sensor can utilize the elastomer of small-size and cleome to realize the measurement of wide-range, can reduce the manufacturing cost of sensor to the sensor that can use the small-range realizes the measurement of large-tonnage range.
In order to achieve the purpose, the utility model provides a parallel tension sensor, which comprises two tension sensors with the same measuring range, a left connecting piece and a right connecting piece;
the tension sensor is composed of an elastic body and a measuring assembly, the elastic body is of a strip-shaped structure, a first pin shaft hole and a second pin shaft hole are symmetrically formed in the left part and the right part of the elastic body, and the measuring assembly is installed in an installation hole in the middle of the elastic body;
the two tension sensors are longitudinally arranged at intervals, the two elastic bodies are arranged in parallel, and the first pin shaft holes on the left sides of the two elastic bodies and the second pin shaft holes on the right sides of the two elastic bodies are coaxially arranged;
the right end of the left connecting piece is longitudinally provided with two first transverse mounting grooves at intervals, the sizes of the two first transverse mounting grooves are matched with the sizes of the left parts of the two elastic bodies, and the right end of the left connecting piece is provided with a longitudinally through first through hole at the part corresponding to the first pin shaft hole; the left connecting piece is sleeved on the outer sides of the left parts of the two elastic bodies through two first transverse mounting grooves, the first through hole and the first pin shaft hole are coaxially arranged, and the left connecting piece is connected with the two elastic bodies through a first shaft sleeve assembled between the first through hole and the first pin shaft hole and a first pin shaft inserted in the first shaft sleeve; the first pin shaft is connected with the first shaft sleeve through a first spring pin which penetrates through the first shaft sleeve in the radial direction;
the left end of the right connecting piece is longitudinally provided with two second transverse mounting grooves at intervals, the sizes of the two second transverse mounting grooves are matched with the sizes of the right parts of the two elastic bodies, and the left end of the right connecting piece is provided with a second through hole which is longitudinally communicated at the part corresponding to the second pin shaft hole; the right connecting piece is sleeved on the outer sides of the right parts of the two elastic bodies through two second transverse mounting grooves, the second through hole and the second pin shaft hole are coaxially arranged, and the right connecting piece is connected with the two elastic bodies through a second shaft sleeve assembled between the second through hole and the second pin shaft hole and a second pin shaft inserted in the second shaft sleeve; the second pin shaft is connected with the second shaft sleeve through a second spring pin which penetrates through the second shaft sleeve in the radial direction.
Furthermore, in order to guarantee the measurement accuracy, the measuring range of the tension sensor is 0.51-0.75 times of the target measuring range. Due to uneven stress, the phenomenon that the stress of a single sensor exceeds 0.5 times of the total range of the two tension sensors which are installed in parallel under full load can occur, so that the range of the tension sensor is 0.51-0.75 times of the target range.
Further, the left sides of two elastomers all are provided with first homonymy sign, and the right side of two elastomers all is provided with second homonymy sign, and the middle part of two elastomers all is provided with the sign of pairing with the group. Therefore, two single sensors in the same group can be matched quickly and accurately during installation, and the installation directions of the two single sensors can be determined conveniently. The condition that the sizes are inconsistent due to pairing errors or installation errors is avoided, the condition that the stress of the two monomer sensors connected in parallel is not uniform is effectively avoided, and the precision of the two monomer sensors connected in parallel for measuring the large load can be ensured.
The utility model discloses in, through the parallelly connected setting of force sensor who makes the same range, can utilize the less force sensor of two ranges even share the heavy load, and then realized the effect of the great tonnage object of single sensor measurement of little range. Because the scheme that the two tension sensors are arranged in parallel is adopted, the volume and the size of the elastic body are effectively reduced, and the manufacturing cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural diagram of the middle tension sensor of the present invention.
In the figure: 1. the left side connecting piece, 2, first axle sleeve, 3, first homonymy sign, 4, first round pin axle, 5, pair sign, 6, force sensor, 7, right side connecting piece, 8, second spring catch, 9, second axle sleeve, 10, the elastomer, 11, measure the assembly, 12, first round pin shaft hole, 13, second round pin shaft hole, 14, first horizontal mounting groove, 15, the horizontal mounting groove of second, 16, first spring catch, 17, second round pin axle, 18, the sign of second homonymy.
Detailed Description
The present invention will be further explained below.
As shown in fig. 1 and 2, a parallel type tension sensor comprises two tension sensors 6 with the same measuring range, a left connecting piece 1 and a right connecting piece 7;
the tension sensor 6 is composed of an elastic body 10 and a measuring assembly 11, the elastic body 10 is of a strip-shaped structure, a first pin shaft hole 12 and a second pin shaft hole 13 are symmetrically formed in the left portion and the right portion of the elastic body 10, and the measuring assembly 11 is installed in an installation hole in the middle of the elastic body 10;
the two tension sensors 6 are longitudinally arranged at intervals, the two elastic bodies 10 are arranged in parallel, and the first pin shaft holes 12 at the left sides of the two elastic bodies 10 and the second pin shaft holes 13 at the right sides of the two elastic bodies 10 are coaxially arranged;
the right end of the left connecting piece 1 is longitudinally provided with two first transverse mounting grooves 14 at intervals, the sizes of the two first transverse mounting grooves 14 are matched with the sizes of the left parts of the two elastic bodies 10, and the right end of the left connecting piece 1 is provided with a longitudinally through first through hole at the part corresponding to the first pin shaft hole 12; the left connecting piece 1 is sleeved on the outer sides of the left parts of the two elastic bodies 10 through two first transverse mounting grooves 14, the first through hole and the first pin shaft hole 12 are coaxially arranged, and the left connecting piece 1 is connected with the two elastic bodies 10 through a first shaft sleeve 2 assembled between the first through hole and the first pin shaft hole 12 and a first pin shaft 4 inserted in the first shaft sleeve 2; the first pin shaft 4 is connected with the first shaft sleeve 2 through a first spring pin 16 which penetrates through the first shaft sleeve in the radial direction; the first shaft sleeve 2 is connected with the first pin shaft 4 through the first spring pin 16, so that the axial limiting effect on the first pin shaft 4 can be achieved, and the situation that the first pin shaft 4 falls off from the first pin shaft hole 12 can be avoided.
Two second transverse mounting grooves 15 are longitudinally formed in the left end of the right connecting piece 7 at intervals, the sizes of the two second transverse mounting grooves 15 are matched with the sizes of the right parts of the two elastic bodies 10, and a longitudinally-through second through hole is formed in the part, corresponding to the second pin shaft hole 13, of the left end of the right connecting piece 7; the right connecting piece 7 is sleeved on the outer sides of the right parts of the two elastic bodies 10 through two second transverse mounting grooves 15, the second through hole and the second pin shaft hole 13 are coaxially arranged, and the right connecting piece 7 is connected with the two elastic bodies 10 through a second shaft sleeve 9 assembled between the second through hole and the second pin shaft hole 13 and a second pin shaft 17 inserted in the second shaft sleeve 9; the second pin shaft 17 is connected with the second shaft sleeve 9 through a second spring pin 8 which penetrates through the second shaft sleeve in the radial direction. The second shaft sleeve 9 is connected with the second pin shaft 17 through the second spring pin 8, so that the axial limiting effect of the second pin shaft 17 can be achieved, and the situation that the second pin shaft 17 falls off from the second pin shaft hole 13 can be avoided.
In order to ensure the measurement accuracy, the measuring range of the tension sensor 6 is 0.51-0.75 times of the target measuring range. Due to uneven stress, the stress of a single sensor of the two tension sensors 6 which are installed in parallel can exceed the total range of 0.5 times under the full load, so that the range of the tension sensor 6 is 0.51-0.75 times of the target range.
Preferably, the two tension sensors 6 are processed together with the coaxially mounted holes (the first pin hole 12 of the two upper elastic bodies 10 and the second pin hole 13 of the two upper elastic bodies 10) to ensure the consistency of the sizes of the two corresponding pin holes of the two elastic bodies 10 in the stress direction. Preferably, the difference between the pitches of the first pin hole 12 and the second pin hole 13 of the two elastic bodies 10 is less than 5% of the full load elongation of the elastic bodies 10.
The left sides of the two elastic bodies 10 are provided with first same side marks 3, the right sides of the two elastic bodies 10 are provided with second same side marks 18, and the middle parts of the two elastic bodies 10 are provided with same group pairing marks 5. First same side sign 3 can be letter A, and second same side sign 18 can be letter B, but does not restrict letter A, B, as long as can realize the sign of direction assembly, like this, can be convenient for when the installation quick accurate matching go out two monomer sensors of same group, still be convenient for confirm the installation direction of two monomer sensors to avoid the sensor to adorn conversely. The condition that the sizes are inconsistent due to pairing errors or installation errors is avoided, the condition that the stress of the two monomer sensors connected in parallel is not uniform is effectively avoided, and the precision of the two monomer sensors connected in parallel for measuring the large load can be ensured.
Claims (3)
1. A parallel type tension sensor comprises two tension sensors (6) with the same measuring range, and is characterized by further comprising a left connecting piece (1) and a right connecting piece (7);
the tension sensor (6) consists of an elastic body (10) and a measuring assembly (11), the elastic body (10) is of a strip-shaped structure, a first pin shaft hole (12) and a second pin shaft hole (13) are symmetrically formed in the left part and the right part of the elastic body (10), and the measuring assembly (11) is installed in an installation hole in the middle of the elastic body (10);
the two tension sensors (6) are longitudinally arranged at intervals, the two elastic bodies (10) are arranged in parallel, and the first pin shaft holes (12) on the left sides of the two elastic bodies (10) and the second pin shaft holes (13) on the right sides of the two elastic bodies (10) are coaxially arranged;
the right end of the left connecting piece (1) is longitudinally provided with two first transverse mounting grooves (14) at intervals, the sizes of the two first transverse mounting grooves (14) are matched with the sizes of the left parts of the two elastic bodies (10), and the right end of the left connecting piece (1) is provided with a first through hole which is longitudinally communicated at a part corresponding to the first pin shaft hole (12); the left connecting piece (1) is sleeved on the outer sides of the left parts of the two elastic bodies (10) through two first transverse mounting grooves (14), the first through hole and the first pin shaft hole (12) are coaxially arranged, and the left connecting piece (1) is connected with the two elastic bodies (10) through a first shaft sleeve (2) assembled between the first through hole and the first pin shaft hole (12) and a first pin shaft (4) inserted in the first shaft sleeve (2); the first pin shaft (4) is connected with the first shaft sleeve (2) through a first spring pin (16) which penetrates through the first shaft sleeve in the radial direction;
the left end of the right connecting piece (7) is longitudinally provided with two second transverse mounting grooves (15) at intervals, the sizes of the two second transverse mounting grooves (15) are matched with the sizes of the right parts of the two elastic bodies (10), and the left end of the right connecting piece (7) is provided with a longitudinally through second through hole at the part corresponding to the second pin shaft hole (13); the right connecting piece (7) is sleeved on the outer sides of the right parts of the two elastic bodies (10) through two second transverse mounting grooves (15), the second through hole and the second pin shaft hole (13) are coaxially arranged, and the right connecting piece (7) is connected with the two elastic bodies (10) through a second shaft sleeve (9) assembled between the second through hole and the second pin shaft hole (13) and a second pin shaft (17) inserted in the second shaft sleeve (9); the second pin shaft (17) is connected with the second shaft sleeve (9) through a second spring pin (8) which penetrates through the second shaft sleeve in the radial direction.
2. A parallel force transducer according to claim 1, wherein the force transducer (6) has a target range of 0.51-0.75 times the target range.
3. A parallel type tension sensor according to claim 1 or 2, characterized in that the left sides of the two elastic bodies (10) are provided with a first same-side identification (3), the right sides of the two elastic bodies (10) are provided with a second same-side identification (18), and the middle parts of the two elastic bodies (10) are provided with a same-group pairing identification (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022219655.1U CN213209320U (en) | 2020-09-30 | 2020-09-30 | Parallel type tension sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022219655.1U CN213209320U (en) | 2020-09-30 | 2020-09-30 | Parallel type tension sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213209320U true CN213209320U (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022219655.1U Active CN213209320U (en) | 2020-09-30 | 2020-09-30 | Parallel type tension sensor |
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| Country | Link |
|---|---|
| CN (1) | CN213209320U (en) |
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2020
- 2020-09-30 CN CN202022219655.1U patent/CN213209320U/en active Active
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