CN207036308U - A kind of antioverloading weight beam - Google Patents
A kind of antioverloading weight beam Download PDFInfo
- Publication number
- CN207036308U CN207036308U CN201720977038.3U CN201720977038U CN207036308U CN 207036308 U CN207036308 U CN 207036308U CN 201720977038 U CN201720977038 U CN 201720977038U CN 207036308 U CN207036308 U CN 207036308U
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- CN
- China
- Prior art keywords
- retracting cylinder
- fixing pipe
- protection shell
- antioverloading
- spring
- Prior art date
- 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.)
- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of antioverloading weight beam, a kind of weight beam is related generally to.Including finger tabs, connect fixture block, protect shell, dynamometer spring, pull bar, overload protective device, junction button and hook, the overload protective device includes fixing pipe, antioverloading spring, retracting cylinder, bracing wire and fixed column, the protection enclosure bottom is provided with wire hole, the fixing pipe top periphery is provided with defining flange, the retracting cylinder bottom is provided with positive stop, spacing is 5mm~10mm on the inside of the retracting cylinder roof and at the top of fixing pipe, guide protrusions are provided with outside the retracting cylinder, it is connected at the top of the bracing wire with retracting cylinder, the bracing wire bottom passes wire hole and is provided with drag hook, the drag hook is connected with fixed column, the fixed column is highly 3mm~5mm.The beneficial effects of the utility model are：After object being measured exceeds weight beam range, it can be good at protecting weight beam without damage and simple in construction, easy to use, reduce the spending of school experiment room.
Description
Technical field
A kind of weight beam is the utility model is related to, specifically a kind of antioverloading weight beam.
Background technology
When carrying out physics teaching experiment, weight beam is a kind of experiment appliance of the size of measuring force.Traditional bullet
Spring dynamometer be user of service with draw ring is pulled, the hook of bottom, which hangs up weight, deforms upon spring, after waiting pointer stable
The numerical value on dial is read to obtain the gravity of weight or pulling force.But student will accidentally exceed it in use
Range, dynamometer spring retention time under excessive deformed state is long, and the deformation for causing dynamometer spring can not be restored to the original state state,
Its precision will be influenceed when using next time or can not be reused.When being tested especially for junior school student, due to not abiding by
Keep experimental rules and situation about outranging using weight beam usually occurs, cause laboratory inner spring dynamometer often a large amount of
Damage, cause school to buy again, unnecessary expenditures brought to school.Surveyed so being badly in need of a kind of antioverloading spring at present
Power meter, after the weight no to scale of measurement, weight beam can be protected without damage.
Utility model content
The purpose of this utility model is to provide a kind of antioverloading weight beam, and it can exceed bullet in object being measured
After spring dynamometer range, it can be good at protecting weight beam without damage and simple in construction, easy to use, reduce and learn
The spending in school laboratory.
The utility model to achieve the above object, is achieved through the following technical solutions：
A kind of antioverloading weight beam, including it is finger tabs, connection fixture block, protection shell, dynamometer spring, pull bar, anti-
Overload device, junction button and hook, the connection fixture block are connected to protection cover top portion center, and the finger tabs are set
At the top of connection fixture block, the dynamometer spring is arranged in protection shell, and with being connected fixture block bottom at the top of the dynamometer spring
It is fixedly connected, the dynamometer spring bottom is provided with pressing plate, and the pressing plate is provided with pointer, and the pressing plate bottom surface is connected with pull bar,
Dial is provided with before the protection shell, the dial is provided with scale chute, the front and back of the protection shell
Guide chute is equipped with, the overload protective device is symmetricly set on protection enclosure bottom both sides, and the overload protective device is arranged at
Enclosure is protected, the overload protective device includes fixing pipe, antioverloading spring, retracting cylinder, bracing wire and fixed column, the fixation
Bottom of the tube is fixedly connected with protection enclosure bottom, and the protection enclosure bottom is provided with the wire hole corresponding with fixing pipe, described
Fixing pipe top periphery is provided with defining flange, and the antioverloading spring is arranged in fixing pipe, and the retracting cylinder is arranged on fixation
Pipe is peripheral and is slidably connected with fixing pipe, and the retracting cylinder bottom is provided with the positive stop corresponding with defining flange, described to stretch
Spacing is 5mm~10mm on the inside of contracting cylinder roof and at the top of fixing pipe, is provided with outside the retracting cylinder and is slidably connected with guide chute
Guide protrusions, the guide protrusions are stretched out outside guide chute, and the antioverloading spring top is connected with retracting cylinder, described
It is connected at the top of bracing wire with retracting cylinder, the bracing wire bottom passes wire hole and is provided with drag hook, and the drag hook is connected with fixed column, described
Fixed column is fixedly installed on protection enclosure bottom, and the fixed column is highly 3mm~5mm, at the top of the junction button and pull bar bottom
Portion connects, and the junction button bottom connects with hook.
The protection cover top portion is provided with through hole, and the connection fixture block is rubber fixture block, and the connection fixture block side is provided with
Annular groove, the annular groove and through hole clamping.
The protection shell is provided with label writing area.
Prior art is contrasted, the beneficial effects of the utility model are：
1st, the present apparatus is provided with overload protective device, and overload protective device includes fixing pipe, antioverloading spring, retracting cylinder, bracing wire
And fixed column, when object being measured exceeds weight beam range, dynamometer spring can be rapidly elongated, due to retracting cylinder roof
Inner side is 5mm~10mm with spacing at the top of fixing pipe, and pressing plate is pressed onto in the presence of inertia on retracting cylinder roof, makes retracting cylinder meeting
Decline 5mm~10mm, on the inside of the retracting cylinder roof with fixing pipe top contact, accordingly, bracing wire can also decline 5mm~
10mm, because fixed column is highly 3mm~5mm, after bracing wire declines 5mm~10mm, there is no effect between drag hook and fixed column
Power, drag hook slide from fixed column under gravity, so as to depart from the constraint of fixed column, when drag hook departs from the pact of fixed column
Shu Shi, in the presence of antioverloading spring force, retracting cylinder can bounce up rapidly, so as to which pressing plate be bounced up, until limit convex
Edge contacts with positive stop, the deformation of dynamometer spring is returned in normal deformation range, and dynamometer spring is not in excessive shape
The situation of change.Therefore, after object being measured exceeds weight beam range, can be good at protecting spring to survey by the method
Power meter is without damage.After the object being measured of no to scale is removed from weight beam, then projection is directed to finger
Pulled downward on along guide chute, so that retracting cylinder overcomes the elastic force of antioverloading spring, moved down along fixing pipe, be multiple
Position, can also be by the elastic force that pulls downward on drag hook and bracing wire makes retracting cylinder overcome antioverloading spring, along fixing pipe to moving down
It is dynamic, reset, then drag hook is connected with fixed column again, in the presence of antioverloading spring force, drag hook tightly hook fixation
Post, then normal use weight beam again.The structure of the present apparatus is simple, easy to use, greatly reduces spring dynamometry
The damage of meter, reduce the spending of school experiment room.
Brief description of the drawings
Accompanying drawing 1 is the utility model external structure schematic diagram.
Accompanying drawing 2 is the utility model internal structure schematic diagram.
Accompanying drawing 3 is the utility model side view.
Accompanying drawing 4 is I portions enlarged drawing in the utility model accompanying drawing 2.
Accompanying drawing 5 is connection card block structure schematic diagram in the utility model.
Label shown in accompanying drawing：
1st, finger tabs；2nd, fixture block is connected；3rd, shell is protected；4th, dynamometer spring；5th, pull bar；6th, junction button；7th, link up with；8、
Pressing plate；9th, pointer；10th, dial；11st, scale chute；12nd, guide chute；13rd, fixing pipe；14th, antioverloading spring；15th, stretch
Cylinder；16th, bracing wire；17th, fixed column；18th, wire hole；19th, defining flange；20th, positive stop；21st, guide protrusions；22nd, drag hook；
23rd, through hole；24th, annular groove；25th, label writing area.
Embodiment
With reference to specific embodiment, the utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation the scope of the utility model.In addition, it is to be understood that reading the content of the utility model instruction
Afterwards, those skilled in the art can make various changes or modifications to the utility model, and these equivalent form of values equally fall within this Shen
Please limited range.
Described in the utility model is a kind of antioverloading weight beam, agent structure include finger tabs 1, connection fixture block 2,
Shell 3, dynamometer spring 4, pull bar 5, overload protective device, junction button 6 and hook 7 are protected, it is outer that the connection fixture block 2 is connected to protection
The top center of shell 3, the finger tabs 1 are arranged on the top of connection fixture block 2, and the dynamometer spring 4 is arranged on protection shell 3
It is interior, and the top of the dynamometer spring 4 is fixedly connected with being connected the bottom of fixture block 2, the bottom of dynamometer spring 4 is provided with pressing plate 8, described
Pressing plate 8 is provided with pointer 9, and pointer 9 is arranged on the outside before protection shell 3, and the bottom surface of pressing plate 8 is connected with pull bar 5, described
Protection shell 3 is above provided with dial 10, and the dial 10 is provided with scale chute 11, and pointer 9 is along on scale chute 11
Lower slider.The front and back of the protection shell 3 is equipped with guide chute 12, and the overload protective device is symmetricly set on protection
The bottom surface both sides of shell 3, the overload protective device are arranged inside protection shell 3, and the overload protective device includes fixing pipe 13, prevented
Overload spring 14, retracting cylinder 15, bracing wire 16 and fixed column 17, the bottom of fixing pipe 13 are fixedly connected with protection shell 3 bottom surface,
Protection shell 3 bottom surface is provided with the wire hole 18 corresponding with fixing pipe 13, and the bottom of bracing wire 16 is stretched out by wire hole 18.Institute
State the top periphery of fixing pipe 13 and be provided with defining flange 19, the antioverloading spring 14 is arranged in fixing pipe 13, the retracting cylinder
15 are arranged on the periphery of fixing pipe 13 and are slidably connected with fixing pipe 13, and the bottom of retracting cylinder 15 is provided with relative with defining flange 19
The positive stop 20 answered, in the presence of defining flange 19 and positive stop 20, retracting cylinder 15 can be avoided in antioverloading spring
Depart from fixing pipe 13 during being bounced up in the presence of 14.On the inside of the roof of retracting cylinder 15 and the top spacing of fixing pipe 13 is 5mm
~10mm, the outside of retracting cylinder 15 are provided with the guide protrusions 21 being slidably connected with guide chute 12, and the guide protrusions 21 are stretched
Go out outside guide chute 12, after the object being measured of no to scale is removed from weight beam, then will be led with finger
Pulled downward on to projection 21 along guide chute 12, so that retracting cylinder 15 overcomes the elastic force of antioverloading spring 14, along fixation
Pipe 13 is moved down, resetted.The top of antioverloading spring 14 is connected with retracting cylinder 15, the top of bracing wire 16 and retracting cylinder 15
Connection, the bottom of bracing wire 16 pass wire hole 18 and are provided with drag hook 22, and the drag hook 22 is connected with fixed column 17, the fixed column
17 are fixedly installed on protection shell 3 bottom surface, and the height of fixed column 17 is 3mm~5mm, the top of junction button 6 and the bottom of pull bar 5
Portion is connected, and the bottom of junction button 6 is connected with hook 7.
For the clamping realized connection fixture block 2 with protect the top of shell 3, the top of protection shell 3 is provided with through hole 23, institute
It is rubber fixture block to state connection fixture block 2, and connection fixture block 2 side is provided with annular groove 24, the annular groove 24 and the clamping of through hole 23.
The protection shell 3 is provided with label writing area 25.Label writing area 25 is used for writing the specification of weight beam
Or information.
Application method and principle：
When object being measured exceeds weight beam range, dynamometer spring 4 can be rapid in the presence of object gravity is measured
Be elongated, due to being 5mm~10mm with the top spacing of fixing pipe 13 on the inside of the roof of retracting cylinder 15, effect of the pressing plate 8 in inertia
It is depressed on the roof of retracting cylinder 15, retracting cylinder 15 is declined 5mm~10mm, until the roof of retracting cylinder 15 inner side and fixing pipe 13
Top contact, accordingly, bracing wire 16 can also decline 5mm~10mm, and because the height of fixed column 17 is 3mm~5mm, bracing wire 16 declines
After 5mm~10mm, there is no active force between drag hook 22 and fixed column 17, drag hook 22 is under gravity from fixed column 17
Slide, so as to depart from the constraint of fixed column 17, after drag hook 22 departs from the constraint of fixed column 17, in the elastic force of antioverloading spring 14
Under effect, retracting cylinder 15 can bounce up rapidly, so that pressing plate 8 be bounced up, until defining flange 19 contacts with positive stop 20,
The deformation of dynamometer spring 4 is returned in normal deformation range, make the situation that dynamometer spring 4 is not in excessive deformation.Therefore,
After object being measured exceeds weight beam range, it can be good at protecting weight beam without damage by the method.
After the object being measured of no to scale is removed from weight beam, then with finger be directed to projection 21 along
Guide chute 12 pulls downward on, so that retracting cylinder 15 overcomes the elastic force of antioverloading spring 14, moved down along fixing pipe 13,
Reset, can also be by the elastic force that pulls downward on drag hook 22 and bracing wire 16 makes retracting cylinder 15 overcome antioverloading spring 14, along solid
Fixed tube 13 is moved down, resetted, and then drag hook 22 is connected with fixed column 17 again, in the presence of the elastic force of antioverloading spring 14,
Drag hook 22 tightly hook fixed column 17, then normal use weight beam again.The structure of the present apparatus is simple, user
Just, the damage of weight beam is greatly reduced, reduces the spending of school experiment room.
Embodiment：
Described in the utility model is a kind of antioverloading weight beam, agent structure include finger tabs 1, connection fixture block 2,
Shell 3, dynamometer spring 4, pull bar 5, overload protective device, junction button 6 and hook 7 are protected, mark is above provided with the protection shell 3
Label writing area 25, the protection top center of shell 3 are provided with through hole 23, and the fixture block 2 that connects is rubber fixture block, the company
Connect the side of fixture block 2 and be provided with annular groove 24, the annular groove 24 and the clamping of through hole 23, the finger tabs 1 are arranged on connection fixture block 2
Top, the dynamometer spring 4 are arranged in protection shell 3, and the top of the dynamometer spring 4 connects with being connected the bottom of fixture block 2 and fixing
Connect, the bottom of dynamometer spring 4 is provided with pressing plate 8, and the pressing plate 8 is provided with pointer 9, and pointer 9 is arranged on before protection shell 3
Outside, the bottom surface of pressing plate 8 are connected with pull bar 5, and the protection shell 3 is above provided with dial 10, and dial 10, which is provided with, to be carved
Degree, the dial 10 are provided with scale chute 11, and the front and back of the protection shell 3 is equipped with guide chute 12, institute
State overload protective device and be symmetricly set on protection shell 3 bottom surface both sides, the overload protective device is arranged inside protection shell 3, institute
Stating overload protective device includes fixing pipe 13, antioverloading spring 14, retracting cylinder 15, bracing wire 16 and fixed column 17, the fixing pipe 13
Bottom is fixedly connected with protection shell 3 bottom surface, and protection shell 3 bottom surface is provided with the wire hole 18 corresponding with fixing pipe 13,
The top periphery of fixing pipe 13 is provided with defining flange 19, and the antioverloading spring 14 is arranged in fixing pipe 13, described flexible
Cylinder 15 is arranged on the periphery of fixing pipe 13 and is slidably connected with fixing pipe 13, and the bottom of retracting cylinder 15 is provided with and the phase of defining flange 19
Corresponding positive stop 20, is 5mm~10mm with the top spacing of fixing pipe 13 on the inside of the roof of retracting cylinder 15, in the present embodiment
8mm is set to, the outside of retracting cylinder 15 is provided with the guide protrusions 21 being slidably connected with guide chute 12, and the guide protrusions 21 are stretched
Go out outside guide chute 12, the top of antioverloading spring 14 is connected with retracting cylinder 15, the top of bracing wire 16 and retracting cylinder
15 connections, the bottom of bracing wire 16 pass wire hole 18 and are provided with drag hook 22, and the drag hook 22 is connected with fixed column 17, the fixation
Post 17 is fixedly installed on protection shell 3 bottom surface, and the height of fixed column 17 is 3mm~5mm, and 4mm is set in the present embodiment, described
The top of junction button 6 is connected with the bottom of pull bar 5, and the bottom of junction button 6 is connected with hook 7.
Claims (3)
- A kind of 1. antioverloading weight beam, it is characterised in that：Including finger tabs (1), connection fixture block (2), protection shell (3), dynamometer spring (4), pull bar (5), overload protective device, junction button (6) and hook (7), the connection fixture block (2) are connected to guarantor Shell (3) top center is protected, the finger tabs (1) are arranged at the top of connection fixture block (2), and the dynamometer spring (4) sets Put in protection shell (3), and be fixedly connected at the top of the dynamometer spring (4) with being connected fixture block (2) bottom, the dynamometer spring (4) bottom is provided with pressing plate (8), and the pressing plate (8) is provided with pointer (9), and pressing plate (8) bottom surface is connected with pull bar (5), described Protection shell (3) is above provided with dial (10), and the dial (10) is provided with scale chute (11), the protection shell (3) front and back is equipped with guide chute (12), and the overload protective device is symmetricly set on protection shell (3) bottom surface two Side, the overload protective device are arranged at protection shell (3) inside, and the overload protective device includes fixing pipe (13), antioverloading bullet Spring (14), retracting cylinder (15), bracing wire (16) and fixed column (17), fixing pipe (13) bottom and protection shell (3) bottom surface are solid Fixed connection, described protection shell (3) bottom surface are provided with the wire hole (18) corresponding with fixing pipe (13), fixing pipe (13) top Portion periphery is provided with defining flange (19), and the antioverloading spring (14) is arranged in fixing pipe (13), and the retracting cylinder (15) sets Put in fixing pipe (13) periphery and be slidably connected with fixing pipe (13), retracting cylinder (15) bottom is provided with and defining flange (19) Corresponding positive stop (20), is 5mm~10mm with spacing at the top of fixing pipe (13) on the inside of retracting cylinder (15) roof, institute The guide protrusions (21) for being provided with outside retracting cylinder (15) and being slidably connected with guide chute (12) are stated, the guide protrusions (21) are stretched out It is outside in guide chute (12), be connected at the top of the antioverloading spring (14) with retracting cylinder (15), bracing wire (16) top and Retracting cylinder (15) connects, and bracing wire (16) bottom passes wire hole (18) and is provided with drag hook (22), and the drag hook (22) is with fixing Post (17) connect, the fixed column (17) be fixedly installed on protection shell (3) bottom surface, the fixed column (17) highly for 3mm~ 5mm, junction button (6) top are connected with pull bar (5) bottom, and junction button (6) bottom is connected with hook (7).
- A kind of 2. antioverloading weight beam according to claim 1, it is characterised in that：Set at the top of the protection shell (3) There is through hole (23), the connection fixture block (2) is rubber fixture block, and described connection fixture block (2) side is provided with annular groove (24), the ring Shape groove (24) and through hole (23) clamping.
- A kind of 3. antioverloading weight beam according to claim 1, it is characterised in that：The protection shell (3) is provided with Label writes area (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720977038.3U CN207036308U (en) | 2017-08-08 | 2017-08-08 | A kind of antioverloading weight beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720977038.3U CN207036308U (en) | 2017-08-08 | 2017-08-08 | A kind of antioverloading weight beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207036308U true CN207036308U (en) | 2018-02-23 |
Family
ID=61474519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720977038.3U Expired - Fee Related CN207036308U (en) | 2017-08-08 | 2017-08-08 | A kind of antioverloading weight beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207036308U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871625A (en) * | 2018-08-08 | 2018-11-23 | 南通瑞斯电子有限公司 | A kind of novel spring dynamometer |
| CN108956313A (en) * | 2018-05-25 | 2018-12-07 | 郑州飞机装备有限责任公司 | A kind of automatic classification load feedback device |
| CN109084919A (en) * | 2018-08-20 | 2018-12-25 | 程尚方 | A kind of tensiometer for high school student's Physical Experiment |
| CN110487365A (en) * | 2019-08-27 | 2019-11-22 | 嘉兴市光炬五金科技有限公司 | A kind of spring weighing device |
-
2017
- 2017-08-08 CN CN201720977038.3U patent/CN207036308U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956313A (en) * | 2018-05-25 | 2018-12-07 | 郑州飞机装备有限责任公司 | A kind of automatic classification load feedback device |
| CN108871625A (en) * | 2018-08-08 | 2018-11-23 | 南通瑞斯电子有限公司 | A kind of novel spring dynamometer |
| CN109084919A (en) * | 2018-08-20 | 2018-12-25 | 程尚方 | A kind of tensiometer for high school student's Physical Experiment |
| CN110487365A (en) * | 2019-08-27 | 2019-11-22 | 嘉兴市光炬五金科技有限公司 | A kind of spring weighing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180223 Termination date: 20180808 |