CN204422032U - A kind of rotational symmetry deep hole flexure type LOAD CELLS - Google Patents
A kind of rotational symmetry deep hole flexure type LOAD CELLS Download PDFInfo
- Publication number
- CN204422032U CN204422032U CN201520082332.9U CN201520082332U CN204422032U CN 204422032 U CN204422032 U CN 204422032U CN 201520082332 U CN201520082332 U CN 201520082332U CN 204422032 U CN204422032 U CN 204422032U
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- elastic body
- rotational symmetry
- base plate
- deep hole
- strain
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Abstract
The utility model discloses a kind of rotational symmetry deep hole flexure type LOAD CELLS, comprise pressure head, steel ball, elastic body, base plate and cable, in the middle of elastomeric bottom surface, there is the strain bore be inwardly recessed, the surrounding of strain bore is provided with 4 rotational symmetry deep holes, form rotational symmetry beam between rotational symmetry deep hole, elastic body is bolted on base plate, and antiskid pin is housed between elastomeric bottom surface and base plate, weighing precision is high, and overload capacity is strong.
Description
Technical field
The utility model relates to a kind of sensor, especially relates to a kind of rotational symmetry deep hole flexure type LOAD CELLS.
Background technology
At present in weighing apparatus field, the resistance strain weighing transducer that the electronic weighing apparatus such as electronic vehicle weighing apparatus are used, the overwhelming majority is bridge-type resistance strain weighing transducer, have load(ing) point change insensitive, the features such as anti-bias load performance is good, and built-in linear is good, easy for installation.But, there is following problem: 1, center of gravity is higher, overload capacity is poor, because bridge-type resistance strain weighing transducer No-mistake Principle is spacing, when the heavy truck of macro-axis is weighed, easily cause load concentration two sensors to cause overload wherein, cause the damage of sensor; 2, the large weighing sensor being greater than 30t is difficult to reach high class of accuracy; 3, when electronic vehicle weighing apparatus is got on the bus, steel ball moves in ball-and-socket, easily causes the distortion of base-plate, the accuracy that impact weighs; 4, the sealing protection of current bridge-type resistance strain weighing transducer is mainly adopted and is carried out sealing protection in two ways, one is rubber seal, two is welded seals, rubber seal is open type sealing, malaria or corrosive gas can cause corrosion along the joint portion infiltration of elastic body and fluid sealant, and then cause the damage of sensor; During welded seal, because elastomeric material is alloy steel, and the diaphragm of welding is stainless steel, because its material is different, have micro-crack to exist during welding, malaria or corrosive gas can enter in the chamber of paster along micro-crack, cause corrosion, and then cause the damage of sensor.
Summary of the invention
The purpose of this utility model is: provide the rotational symmetry deep hole flexure type LOAD CELLS that a kind of weighing precision is high, overload capacity is strong.
The technical solution of the utility model is: a kind of rotational symmetry deep hole flexure type LOAD CELLS, comprise pressure head, steel ball, elastic body, base plate and cable, in the middle of elastomeric bottom surface, there is the strain bore be inwardly recessed, the surrounding of strain bore is provided with 4 rotational symmetry deep holes, rotational symmetry beam is formed between rotational symmetry deep hole, elastomeric edge is equipped with bolt, and elastic body is bolted on base plate, and antiskid pin is housed between elastomeric bottom surface and base plate; Steel ball is arranged on elastic body, and pressure head is arranged on above steel ball, and load is applied on elastic body by pressure head, steel ball, and elastic body is equipped with strain ga(u)ge, strain ga(u)ge connecting cable.
Further, 4 equally distributed antiskid pins are housed between elastomeric bottom surface and base plate.
Further, elastic body to be equally distributedly bolted on base plate by 4.
Further, respectively strain ga(u)ge is housed in 4 rotational symmetry deep holes.
The beneficial effects of the utility model are: 1, center of gravity is lower, overload capacity is strong; because base plate and elastic body constitute overload position limiting structure; greatly strengthen the anti-overload ability of sensor; when load exceedes rated load; in the middle of elastic body together with base top; make elastic body no longer continue distortion, so just protect the impact of sensor from overload.2, weighing precision is high, can overcome the shortcoming being difficult to reach high class of accuracy when bridge-type resistance strain weighing transducer is large to be weighed, and can manufacture small-range to the sensors of large measurement range of hundred tons.3, because force is all moved in base plate, overcome steel ball when electronic vehicle weighing apparatus is got on the bus and move in ball-and-socket, easily cause the shortcoming that base-plate is out of shape.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the elastomeric structural representation of the utility model;
Fig. 3 is the A-A cut-open view of Fig. 2;
Fig. 4 is the B-B cut-open view of Fig. 2.
Embodiment
As can be seen from structural representation of the present utility model shown in Fig. 1, the utility model is made up of pressure head 1, steel ball 2, bolt 3, elastic body 4, pin 5, base plate 6 and cable etc.Structural representation as elastomeric in Fig. 2 the utility model, the A-A cut-open view of Fig. 3, shown in the B-B cut-open view of Fig. 4, in the middle of the bottom surface of elastic body 4, there is a strain bore be inwardly recessed 8, the surrounding of strain bore 8 is provided with between 4 rotational symmetry deep holes, 9,4 rotational symmetry deep holes 9 and forms 4 rotational symmetry beams 10.The edge of elastic body 4 is equipped with bolt 3, and elastic body 4 is fixed on base plate 6 by 4 equally distributed bolts 3, and 4 equally distributed antiskid pins 5 are housed between the bottom surface of elastic body 4 and base plate 6.Elastic body 4 is fixed on base plate 6 and forms the spacing place 12 of overload and secondary mechanical sealing surface 11 by bolt 3; when load exceedes rated load, strain bore 8 is out of shape, together with making to withstand on base plate 6 in the middle of elastic body 4; make elastic body 4 not in continuation distortion, protect the impact of sensor from overload.This structure adopts the secondary mechanical hermetically-sealed construction of strain bore rubber seal and elastic body and base plate composition, and the sealing protection overcoming current bridge-type resistance strain weighing transducer mainly adopts the shortcoming of carrying out sealing protection in two ways.Steel ball 2 is arranged on elastic body 4, and pressure head 1 is arranged on above steel ball 2, and load is applied on elastic body 4 by pressure head 1, steel ball 2, and difference adhering resistance strainometer in 4 rotational symmetry deep holes 9 of elastic body 4, strain ga(u)ge is by cable interface 7 connecting cable.
Principle of work of the present utility model is: load is applied on elastic body 4 by pressure head 1, steel ball 2, makes elastic body 4 produce the elastic deformation be directly proportional to magnitude of load; By being pasted onto the strain ga(u)ge on elastic body strain regions, the elastic deformation of elastic body 4 is converted to the resistance variations of strain ga(u)ge; Wheatstone bridge again by applying driving voltage converts the change of strain ga(u)ge resistance to voltage signal and exports (will be pasted onto the 4 sheet resistance strainometers in differently strained district on elastic body, and connect into differential Wheatstone bridge by the difference of the increase of strain ga(u)ge resistance and reduction).The shortcoming being difficult to reach high class of accuracy when bridge-type resistance strain weighing transducer is large to be weighed can be overcome, small-range can be manufactured to the sensors of large measurement range of hundred tons.
Claims (4)
1. a rotational symmetry deep hole flexure type LOAD CELLS, comprise pressure head (1), steel ball (2), elastic body (4), base plate (6) and cable, it is characterized in that: in the middle of the bottom surface of described elastic body (4), there is the strain bore (8) be inwardly recessed, the surrounding of strain bore (8) is provided with 4 rotational symmetry deep holes (9), rotational symmetry beam (10) is formed between rotational symmetry deep hole (9), the edge of elastic body (4) is equipped with bolt (3), elastic body (4) is fixed on base plate (6) by bolt (3), between the bottom surface of elastic body (4) and base plate (6), antiskid pin (5) is housed, steel ball (2) is arranged on elastic body (4), and pressure head (1) is arranged on steel ball (2) top, and load is applied on elastic body (4) by pressure head (1), steel ball (2), and (4) are equipped with strain ga(u)ge to elastic body, strain ga(u)ge connecting cable.
2. rotational symmetry deep hole flexure type LOAD CELLS according to claim 1, is characterized in that: 4 equally distributed antiskid pins (5) are housed between the bottom surface of described elastic body (4) and base plate (6).
3. rotational symmetry deep hole flexure type LOAD CELLS according to claim 1, is characterized in that: described elastic body (4) is fixed on base plate (6) by 4 equally distributed bolts (3).
4. rotational symmetry deep hole flexure type LOAD CELLS according to claim 1, is characterized in that: respectively strain ga(u)ge is housed in 4 rotational symmetry deep holes (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520082332.9U CN204422032U (en) | 2015-02-06 | 2015-02-06 | A kind of rotational symmetry deep hole flexure type LOAD CELLS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520082332.9U CN204422032U (en) | 2015-02-06 | 2015-02-06 | A kind of rotational symmetry deep hole flexure type LOAD CELLS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204422032U true CN204422032U (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520082332.9U Expired - Fee Related CN204422032U (en) | 2015-02-06 | 2015-02-06 | A kind of rotational symmetry deep hole flexure type LOAD CELLS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204422032U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021035158A1 (en) * | 2019-08-21 | 2021-02-25 | Ramasundaram Bharanikumar | Bulk metallic glass load cell |
-
2015
- 2015-02-06 CN CN201520082332.9U patent/CN204422032U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021035158A1 (en) * | 2019-08-21 | 2021-02-25 | Ramasundaram Bharanikumar | Bulk metallic glass load cell |
| US20210053595A1 (en) * | 2019-08-21 | 2021-02-25 | Freightlucid LLC | Bulk Metallic Glass Load Cell |
| US11912319B2 (en) * | 2019-08-21 | 2024-02-27 | Freightlucid, Llc | Bulk metallic glass load cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20180206 |