CN209689718U - Balance is used in a kind of Physical Experiment weighing - Google Patents
Balance is used in a kind of Physical Experiment weighing Download PDFInfo
- Publication number
- CN209689718U CN209689718U CN201920264671.7U CN201920264671U CN209689718U CN 209689718 U CN209689718 U CN 209689718U CN 201920264671 U CN201920264671 U CN 201920264671U CN 209689718 U CN209689718 U CN 209689718U
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- crossbeam
- support
- jack
- plugged
- pedestal
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Abstract
The utility model relates to student appliance technical fields, especially a kind of Physical Experiment weighing balance, including pedestal, crossbeam, connect cross bar, the pedestal upper surface is connected with column, the crossbeam is articulated on front side of top by shaft, support frame is socketed at left and right sides of the crossbeam, top of support frame is connected with pallet, upper end is connected with pointer among the crossbeam, support rod is plugged at left and right sides of the pedestal upper surface, supporting bar top is connected with supporting block, the cam top is plugged in connection cross bar lower end support base groove, the bull stick right end is connected with turning handle, square socket interpolation is connected to inserted link on turning handle, the pedestal right side is equipped with the first jack and the second jack, inserted link is plugged in the second jack.The structure design of the utility model is reasonable, can be by cam support supporting block with support column crossbeam, so that balance crossbeam can not rotate, because without occurring because crossbeam, which collides with, influences its service precision the problem of.
Description
Technical field
The utility model relates to student appliance technical field, balance is used in especially a kind of Physical Experiment weighing.
Background technique
Balance is a kind of weighing apparatus, is the instrument for measuring mass of object, essence is a kind of bascule.Common balance by
Fulcrum props up balance beam at the center of beam and forms two arms, and a disk is hung on each arm, puts in one of disk known
The object of quality puts object under test in another disk, and the pointer being fixed on beam is inclined when not swinging and being directed toward center scale
Turn to indicate that the quality of object under test.Student will often weigh the object of certain mass when carrying out Physical Experiment using balance
Body usually be easy to cause crossbeam to collide with, influences precision since traditional balance does not have buffer unit picking and placing day.
To solve this problem, notification number is the Chinese utility model patent of CN207816422U, discloses one kind and is used for
The balance of physics teaching is buffered by spring, to prevent from damaging balance due to crossbeam collides with, influences its precision.So
And since spring cannot directly withstand below the crossbeam, in the handling process, crossbeam can still be shaken so that crossbeam pop-up plate rail and
Nut loosening influences device precision.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned technical disadvantages to provide a kind of Physical Experiment weighing balance, can lead to
Cam support supporting block is crossed with support column crossbeam, so that balance crossbeam can not rotate, because without shadow due to crossbeam collides with occurs
The problem of ringing its service precision.
The utility model solves the technical solution that technical problem uses are as follows: a kind of Physical Experiment weighing balance, including bottom
Seat, crossbeam, connection cross bar, the chassis interior is hollow, and pedestal upper surface is connected with column, and the crossbeam is articulated with by shaft
It is equipped on front side of top, at left and right sides of the crossbeam apart from index line and is socketed with support frame, support frame lower thread is connected with
Fastening nut, to be used for fixing support rack, top of support frame is connected with pallet, is weighed object and counterweight, the cross for placing
Beam left and right ends are connected with adjusting screw rod, are threaded with adjusting nut on adjusting screw rod, by adjusting according to apart from index line
It supports rack position and adjusts the position of adjusting nut, the precision of balance can be adjusted before weighing, the column
Top is connected with dial, and dial is equipped with graduation mark, and upper end is connected with pointer among the crossbeam, by counterweight and is weighed
Object is placed on two pallets, gradually increases and decreases counterweight, and when the vertically-aligned graduation mark of pointer, numerical value shown in counterweight is quilt at this time
Weighing amount of substance, the pedestal upper surface left and right sides are plugged with support rod, and supporting bar top is connected with supporting block, two support rods
Lower end is fixed at left and right sides of connection cross bar, and connection cross bar lower end surface is connected with support base, and support base lower end surface is equipped with groove, on
End face is connected with the first support spring, the affixed pedestal inner roof wall in first support spring top, and the base right side is plugged with
Bull stick, bull stick left end are connected with cam, and the cam top is plugged in groove, and the bull stick right end is connected with turning handle, turning handle
Top is connected with sleeve, inserted link is plugged in sleeve, the pedestal right side is equipped with the first jack and the second jack, wherein first
Jack is located on front side of bull stick, and the second jack is located above bull stick, and inserted link is plugged in the second jack, and on base right side part
Lower both ends are connected with limited block, and limited block right side is connected with the second support spring, and the second support spring right end is fixed in sleeve
Left end, when major axis of cam state in a vertical shape, so that post position increases, the left and right sides supports cam support support base
Block supports crossbeam and balance crossbeam can not be rotated, and when major axis of cam is in a horizontal state, cam position decline, support base exists
First support spring acts on lower position decline, and left and right sides support rod drives the decline of supporting block position, and balance crossbeam can be at this time
Rotation, inserted link is extracted out of second jack, and rotation bull stick can be such that cam rotates, and when turning handle is towards on front side of bull stick, is utilized
Second support spring, which is inserted into inserted link in the first jack, so that major axis of cam is in a horizontal state, when turning handle is gone to towards bull stick
When top, major axis of cam state in a vertical shape can be made by being inserted into inserted link in the second jack using the second support spring.
Further, the pallet upper surface is connected with rubber pad, to reduce the damage that may cause to tray surface.
Further, the dial front end face is connected with glassy layer, to protect pointer, prevents pointer from damaging.
Further, the supporting block upper surface is connected with rubber buffer, with the reduction pair in supporting block support beam
The compressing of crossbeam.
Beneficial effect possessed by the utility model is: the structure design of the utility model is reasonable, by extracting inserted link and turning
Then turn handle makes inserted link be inserted into the first jack or the second jack to fix cam and be allowed to and be in using the second support spring
Horizontal or vertical state, and then support the position of supporting block, when need to carry day it is flat when it is horizontal using two supporting block support columns
Beam, so that balance crossbeam can not rotate, because without occurring because crossbeam, which collides with, influences its service precision the problem of.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the utility model.
Attached drawing 2 is the structural schematic diagram of cam described in the utility model.
Attached drawing 3 is the structural schematic diagram of base right side part described in the utility model.
Attached drawing 4 is the cross-sectional view of dial described in the utility model.
Specific embodiment
1 ~ 4 pair of the utility model is described below with reference to the accompanying drawing.
As shown in Fig. 1 ~ 4, the utility model includes pedestal 1, crossbeam 3, connection cross bar 13,1 inner hollow of pedestal, bottom
1 upper surface of seat is connected with column 2, and the crossbeam 3 is articulated on front side of 2 tops by shaft 3-1, sets at left and right sides of the crossbeam 3
Have apart from index line 3-2 and be socketed with support frame 4,4 lower thread of support frame is connected with fastening nut 4-1, for fixing
Support frame 4,4 top of support frame are connected with pallet 5, are weighed object and counterweight for placing, 3 left and right ends of crossbeam are connected with
Adjusting screw rod 6 is threaded with adjusting nut 7 on adjusting screw rod 6, by adjusting 4 position of support frame according to apart from index line 3-2
And the position of adjusting nut 7 is adjusted, the precision of balance can be adjusted before weighing, 2 top of column is affixed
There is dial 8, dial 8 is equipped with graduation mark 9, and the intermediate upper end of the crossbeam 3 is connected with pointer 10, by counterweight and is weighed object
It is placed on two pallets 5, gradually increases and decreases counterweight, when 10 vertically-aligned graduation mark 9 of pointer, numerical value shown in counterweight is at this time
It is weighed amount of substance, is plugged with support rod 11 at left and right sides of 1 upper surface of pedestal, 11 top of support rod is connected with supporting block
12, two support rods, 11 lower end is fixed in 13 left and right sides of connection cross bar, and connection 13 lower end surface of cross bar is connected with support base 14, supports
14 lower end surfaces of seat are equipped with groove 14-1, and upper surface is connected with the first support spring 15, and 15 top of the first support spring is affixed
1 inner roof wall of pedestal is plugged with bull stick 16 on the right side of the pedestal 1, and 16 left end of bull stick is connected with cam 17, and 17 top of cam is inserted
It is connected in groove 14-1,16 right end of bull stick is connected with turning handle 18, and 18 top of turning handle is connected with sleeve 19, grafting in sleeve 19
There is inserted link 20,1 right side of pedestal is equipped with the first jack 21 and the second jack 22, wherein before the first jack 21 is located at bull stick 16
Side, the second jack 22 are located at 16 top of bull stick, and inserted link 20 is plugged in the second jack 22, and two above and below 1 right part of pedestal
End is connected with limited block 23, and 23 right side of limited block is connected with the second support spring 27, and 27 right end of the second support spring is fixed in
19 left end of sleeve, when 17 long axis of cam state in a vertical shape, cam 17 supports support base 14 so that 11 position liter of support rod
Height, left and right sides supporting block 12 support crossbeam 3 and balance crossbeam 3 can not be rotated, when 17 long axis of cam is in a horizontal state,
The decline of 17 position of cam, support base 14 decline position under the effect of the first support spring 15, and left and right sides support rod 11 drives branch
The decline of 12 position of bracer, balance crossbeam 3 can rotate at this time, and inserted link 20 is extracted out of second jack 22, and rotation bull stick 16 is
Cam 17 can be made to rotate, when turning handle 18 is towards 16 front side of bull stick, so that inserted link 20 is inserted into first using the second support spring 27
17 long axis of cam can be made to be in a horizontal state in jack 21, when turning handle 18 is gone to towards 16 top of bull stick, utilize the second support
Spring 27, which is inserted into inserted link 20 in second jack 22, can make 17 long axis of cam state in a vertical shape.
In the present embodiment, 5 upper surface of pallet is connected with rubber pad 24, may cause with reducing to 5 surface of pallet
Damage.
In the present embodiment, 8 front end face of dial is connected with glassy layer 25, to protect pointer 10, prevents pointer 10
Damage.
In the present embodiment, 12 upper surface of supporting block is connected with rubber buffer 26, to support cross in supporting block 12
Reduce the compressing to crossbeam 3 when beam 3.
The structure design of the utility model is reasonable, then utilizes the second support spring by extracting inserted link 20 and rotating turning handle 18
27, which are inserted into inserted link 20 in first jack 21 or the second jack 22, can fix cam 17 and be allowed in horizontal or vertical state, into
And support the position of supporting block 12, when need to carry day it is flat when using two 12 support column crossbeams 3 of supporting block so that balance is horizontal
Beam 3 can not rotate, then the problem of influencing its service precision due to crossbeam 3 collides with will not occur.
Claims (4)
1. a kind of Physical Experiment weighing balance, including pedestal, crossbeam, connection cross bar, it is characterised in that: in the chassis interior
Sky, pedestal upper surface are connected with column, and the crossbeam is articulated on front side of top by shaft, be equipped at left and right sides of the crossbeam away from
It from index line and is socketed with support frame, support frame lower thread is connected with fastening nut, and top is connected with pallet, the crossbeam
Left and right ends are connected with adjusting screw rod, and adjusting nut is threaded on adjusting screw rod, and the column top is connected with dial,
Dial is equipped with graduation mark, and upper end is connected with pointer among the crossbeam, is plugged with branch at left and right sides of the pedestal upper surface
Strut, supporting bar top are connected with supporting block, and two support rod lower ends are fixed at left and right sides of connection cross bar, connect cross bar lower end surface
It is connected with support base, support base lower end surface is equipped with groove, and upper surface is connected with the first support spring, first support spring top
Affixed pedestal inner roof wall is held, the base right side is plugged with bull stick, and bull stick left end is connected with cam, and the cam top is plugged in
In groove, the bull stick right end is connected with turning handle, and turning handle top is connected with sleeve, and inserted link is plugged in sleeve, and the pedestal is right
End face is equipped with the first jack and the second jack, wherein the first jack is located on front side of bull stick, the second jack is located above bull stick, inserted link
It is plugged in the second jack, and is connected with limited block in base right side part upper and lower ends, limited block right side is connected with second
Support spring, the second support spring right end are fixed in sleeve left end.
2. a kind of Physical Experiment weighing balance according to claim 1, it is characterised in that: the pallet upper surface is affixed
There is rubber pad.
3. a kind of Physical Experiment weighing balance according to claim 1, it is characterised in that: the dial front end face is solid
It is connected to glassy layer.
4. a kind of Physical Experiment weighing balance according to claim 1, it is characterised in that: the supporting block upper surface is solid
It is connected to rubber buffer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920264671.7U CN209689718U (en) | 2019-03-03 | 2019-03-03 | Balance is used in a kind of Physical Experiment weighing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920264671.7U CN209689718U (en) | 2019-03-03 | 2019-03-03 | Balance is used in a kind of Physical Experiment weighing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209689718U true CN209689718U (en) | 2019-11-26 |
Family
ID=68603510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920264671.7U Expired - Fee Related CN209689718U (en) | 2019-03-03 | 2019-03-03 | Balance is used in a kind of Physical Experiment weighing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209689718U (en) |
-
2019
- 2019-03-03 CN CN201920264671.7U patent/CN209689718U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20191126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |