CN202329789U - Buffer scale - Google Patents
Buffer scale Download PDFInfo
- Publication number
- CN202329789U CN202329789U CN2011204784787U CN201120478478U CN202329789U CN 202329789 U CN202329789 U CN 202329789U CN 2011204784787 U CN2011204784787 U CN 2011204784787U CN 201120478478 U CN201120478478 U CN 201120478478U CN 202329789 U CN202329789 U CN 202329789U
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- weighing platform
- hydraulic
- buffer
- buffer device
- oil
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Abstract
The utility model provides a buffer scale, which belongs to a metering instrument and mainly solves the problem of influence on a weighing sensor caused by great impact force. The buffer scale comprises an upper scale platform and a lower scale platform, wherein the weighing sensor is arranged under the lower scale platform, and a buffer device is arranged between the upper scale platform and the lower scale platform. The buffer scale is characterized in that the buffer device consists of a spring buffer device and a hydraulic buffer device which are in parallel connection relationship, and a pre-tightening screw rod used for limiting the displacement of the upper scale platform is arranged between the upper scale platform and the lower scale platform. The spring buffer device and the hydraulic buffer device are combined, the spring buffer device has the buffer effect and can also provide resetting motive power for the hydraulic device, and oil damping effect of the hydraulic bumping device can effectively overcome the defect of the damping difference of the spring buffer device. The spring buffer device and the hydraulic buffer device have the buffer effects on great impact, and the weighing sensor can be effectively protected.
Description
Technical field
The utility model relates to a kind of gauging instrument, especially has the not impaired buffering scale of protection LOAD CELLS.
Background technology
In recent years, along with expanding economy and management development, the buffering scale is used more extensive as a kind of metering outfit in metallurgy industry.For impacting bigger scene,, often increase snubber assembly and reduce the impulsive force that acts on the LOAD CELLS for the protection LOAD CELLS is not damaged.The impact damper of existing snubber assembly polyurethane material commonly used, though buffering effect is better, the life-span is shorter, often uses 3 years left and right sides polyurethane bumper absorbers just because of reason damages such as aging, elasticity variation; Though some snubber assembly adopts spring, duration of oscillation is long, stable slow.
The utility model content
The purpose of the utility model is to provide a kind of buffering scale, and this buffering scale can protect LOAD CELLS not to be damaged for impacting bigger scene, increases the service life, and reduces maintenance capacity.
The utility model solves the technical scheme that its technical matters adopted: a kind of buffering scale; It comprises that weighing platform and following weighing platform, LOAD CELLS are arranged at down the below of weighing platform; Between last weighing platform and following weighing platform, be provided with snubber assembly; It is characterized in that described snubber assembly is formed by being parallelly connected spring bumper and the hydraulic damping device of concerning, between last weighing platform and following weighing platform, is provided with the pretension screw rod that is used to limit the weighing platform displacement.
Described spring bumper is parallel between weighing platform and the following weighing platform for many group springs.
Described hydraulic damping device; Comprise storage tank, oil cylinder and be connected the two filtration damper, damping oil pipe; The cylinder body fixed part of oil cylinder is fixed on down on the weighing platform; The cylinder body movable part of oil cylinder is resisted against on the bottom surface of weighing platform, is hydraulic oil chamber between cylinder body movable part and the cylinder body fixed part.
On oil cylinder, be provided with the bleed passage that is communicated with outside and hydraulic oil chamber, it is stifled that its external port is provided with vent hole oil.
When weighed object when eminence falls; Impulsive force acts on spring bumper and the hydraulic damping device through last weighing platform; Spring is compressed the absorption portion impact energy, and the hydraulic oil in the hydraulic damping device is compressed simultaneously, flows to storage tank through filtration damper, damper tube.This device has increased the time of material impact force action on LOAD CELLS, has reduced the impulsive force to LOAD CELLS effectively.The spring energy stored reached maximum when material and last weighing platform were fallen extreme lower position, began bounce-back then, and spring increases for bigger elastic force speed of last weighing platform gradually by zero.Hydraulic fluid pressure in the hydraulic damping device diminishes gradually simultaneously; Hydraulic oil is inhaled back in the hydraulic damping device in storage tank through filtering damper gradually; In this process; Hydraulic damping device has consumed the energy of partial spring, and hydraulic damping device has offset the elastic force of partial spring to last weighing platform for downward pulling force of last weighing platform.When last weighing platform arrived peak, the pretension screw rod had limited in the last weighing platform continuation and has moved, because last weighing platform elastic deformation etc., spring is compressed once more, repeats above process.Hydraulic damping device consumption systems energy always in the oscillatory process of last weighing platform makes weighing platform stable very soon.
The beneficial effect of the utility model:
1, this device combines spring bumper and hydraulic damping device; Spring bumper not only has buffer action and also can be hydraulic means the power that resets is provided, and the oil damping effect of hydraulic damping device can remedy the defective of spring bumper damping error effectively.They all have buffer action to large impact, can effectively protect LOAD CELLS.
2, the principal feature of this device is that system stability is fast, the life-span is long, and maintenance workload is little, be other existing impact damper can not compare.
Description of drawings
Fig. 1 is for realizing the front view of utility model patent.
Fig. 2 is the front view of hydraulic damping device.
Among the figure: 1 spring bumper; 2 pretension screw rods; 3 hydraulic damping devices; Weighing platform on 4; 5 times weighing platforms; 6 LOAD CELLSs; 7 cylinder body movable parts; 8 hydraulic oil; 9 vent holes oil is stifled; 10 cylinder body fixed parts, 11 filter damper; 12 damping oil pipes, 13 storage tank.
Embodiment
Be further described through the realization of accompanying drawing below the utility model patent:
Like Fig. 1; A kind of buffering scale; It comprises that weighing platform 4 and following weighing platform 5, four LOAD CELLSs 6 are arranged at down four angles, below of weighing platform; Between last weighing platform and following weighing platform, be provided with four groups of snubber assemblys of four jiaos of the weighing platforms of being placed in, described snubber assembly is made up of with hydraulic damping device 3 spring bumper 1 that is the parallel connection relation, works in coordination with each other between the two.Between last weighing platform and following weighing platform, be provided with the pretension screw rod 2 that is used to limit the weighing platform displacement.Described spring bumper is parallel between weighing platform and the following weighing platform for many group springs.Like Fig. 2; Hydraulic damping device; Comprise storage tank 13, oil cylinder and be connected the two filtration damper 11, damping oil pipe 12; The cylinder body fixed part 10 of oil cylinder is fixed on down on the weighing platform, and the cylinder body movable part 7 of oil cylinder is resisted against on the bottom surface of weighing platform, is hydraulic oil chamber between cylinder body movable part and the cylinder body fixed part.On oil cylinder, be provided with the bleed passage that is communicated with outside and hydraulic oil chamber, its external port is provided with vent hole oil stifled 9.
When weighed object when eminence falls; Impulsive force acts on spring bumper 1 and the hydraulic damping device 3 through last weighing platform; Spring is compressed the absorption portion impact energy, and the hydraulic oil in the hydraulic damping device 3 is compressed simultaneously, flows to storage tank 13 through filtration damper 11, damping oil pipe 12.This device has increased the time of material impact force action on LOAD CELLS.
According to theorem of impulse F* Δ t=m*v,
F: act on the power on the LOAD CELLS
Δ t: the time of impact force action on LOAD CELLS
M: the quality of weighed object
V: the speed when weighed object contacts with last weighing platform
M, when v is constant, Δ t increases and can reduce the impulsive force that acts on the LOAD CELLS effectively.
The spring energy stored reached maximum when material and last weighing platform 4 were fallen extreme lower position, began bounce-back then, and spring increases for 4 one bigger elastic force speed of last weighing platform gradually by zero.Hydraulic fluid pressure in the hydraulic damping device 3 diminishes gradually simultaneously, and hydraulic oil 8 is inhaled back in the cylinder body of hydraulic damping device in storage tank 13 through filtering damper 11 gradually.In this process, hydraulic damping device 3 has consumed the energy of partial spring, and hydraulic damping device has offset the elastic force of partial spring to last weighing platform for 4 one downward pulling force of last weighing platform.When last weighing platform 4 arrived peak, pretension screw rod 2 had limited in last weighing platform 4 continuation and has moved, because last weighing platform 4 elastic deformations, spring is compressed once more, repeats above process.Hydraulic damping device 3 consumption systems energy always in the oscillatory process of last weighing platform makes weighing platform 4 stable very soon.
Hydraulic damping device 3 relies on the compression deformation of hydraulic oil 8 and outwards flows out increases surge time, relies on hydraulic oil 8 to consume the part impact energy through filtering damper 11.Hydraulic damping device 3 is made up of cylinder body movable part 7 (being plunger), cylinder body fixed part 10 (being cylinder block), hydraulic oil 8, filtration damper 11, damping oil pipe 12, storage tank 13, vent hole oil stifled 9 etc.During the exhaust of oil cylinder cavity, open vent hole oil stifled 9 and get final product.
Spring bumper 1 reduces the load that single spring bears, convenient processing, the reliability of raising system through the springs parallel connection enhancing load-bearing capacities of organizing more.
Claims (4)
1. one kind is cushioned scale; It comprises that weighing platform and following weighing platform, LOAD CELLS are arranged at down the below of weighing platform; Between last weighing platform and following weighing platform, be provided with snubber assembly; It is characterized in that described snubber assembly is formed by being parallelly connected spring bumper and the hydraulic damping device of concerning, between last weighing platform and following weighing platform, is provided with the pretension screw rod that is used to limit the weighing platform displacement.
2. a kind of buffering scale according to claim 1 is characterized in that, described spring bumper is parallel between weighing platform and the following weighing platform for many group springs.
3. a kind of buffering scale according to claim 1; It is characterized in that; Described hydraulic damping device comprises storage tank, oil cylinder and is connected the two filtration damper, damping oil pipe that the cylinder body fixed part of oil cylinder is fixed on down on the weighing platform; The cylinder body movable part of oil cylinder is resisted against on the bottom surface of weighing platform, is hydraulic oil chamber between cylinder body movable part and the cylinder body fixed part.
4. a kind of buffering scale according to claim 3 is characterized in that, on oil cylinder, is provided with to be communicated with bleed passage outside and hydraulic oil chamber, and it is stifled that its external port is provided with vent hole oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204784787U CN202329789U (en) | 2011-11-26 | 2011-11-26 | Buffer scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204784787U CN202329789U (en) | 2011-11-26 | 2011-11-26 | Buffer scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202329789U true CN202329789U (en) | 2012-07-11 |
Family
ID=46441767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204784787U Expired - Fee Related CN202329789U (en) | 2011-11-26 | 2011-11-26 | Buffer scale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202329789U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444868A (en) * | 2016-01-22 | 2016-03-30 | 河海大学常州校区 | Buffer scale based on hydraulic buffering |
| CN108225534A (en) * | 2018-01-31 | 2018-06-29 | 蚌埠兴力传感系统工程有限公司 | A kind of New Buffering scale |
-
2011
- 2011-11-26 CN CN2011204784787U patent/CN202329789U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444868A (en) * | 2016-01-22 | 2016-03-30 | 河海大学常州校区 | Buffer scale based on hydraulic buffering |
| CN108225534A (en) * | 2018-01-31 | 2018-06-29 | 蚌埠兴力传感系统工程有限公司 | A kind of New Buffering scale |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 250002 Ji'nan, central city, Shandong hero hill road, No. 147 Patentee after: Shandong Jinzhong science and technology group Limited by Share Ltd Address before: 250002 Ji'nan, central city, Shandong hero hill road, No. 147 Patentee before: Jinan Jinzhong Electronic Scale Co., Ltd. |
|
| 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: 20120711 Termination date: 20201126 |