CN206919990U - A kind of Physical Experiment balance - Google Patents
A kind of Physical Experiment balance Download PDFInfo
- Publication number
- CN206919990U CN206919990U CN201720906994.2U CN201720906994U CN206919990U CN 206919990 U CN206919990 U CN 206919990U CN 201720906994 U CN201720906994 U CN 201720906994U CN 206919990 U CN206919990 U CN 206919990U
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- CN
- China
- Prior art keywords
- screw mandrel
- column
- sliding block
- crossbeam
- screw rod
- 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.)
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Abstract
The utility model discloses a kind of Physical Experiment balance,Including base,Also include two columns being arranged symmetrically on base,The sliding block slided up and down in column,The positioning screw rod of lateral arrangement between column,The first screw mandrel being longitudinally arranged inside column,Second screw mandrel and crossbeam,The column includes hollow rectangular tube and is fixed on the top of rectangular tube upper end,The first screw mandrel and the second screw mandrel are provided with two rectangular tubes,First screw mandrel and the second screw mandrel are connected to the first knob by rotating mechanism,Sliding block is sheathed with the middle part of first screw mandrel and the second screw mandrel,The positioning screw rod of sliding block is provided through between two columns,Fulcrum sliding block is threaded with the middle part of the positioning screw rod,Positioning screw rod both sides are provided with limiting plate,Two column upper end frames are provided with crossbeam,Crossbeam bottom has been arranged symmetrically two triangle notch,U-shaped card is provided with the triangle notch.The utility model has the characteristics of simple in construction, easy to use without counterweight and pointer.
Description
Technical field
It the utility model is related to field of experiment equipment, more particularly to a kind of Physical Experiment balance.
Background technology
Balance is one of school's physics laboratory's requisite instrumentation, and the weight contrast of various materials is required for balance to realize.
Traditional balance includes pointer and counterweight, and pointer, which easily collides, to be caused to damage, and destroys weighing precision, and counterweight is also easily lost
Lose, cause to weigh inconvenience.Weighed in the weight of two kinds of materials of contrast, it is necessary to carry out counterweight respectively, not only become weighing process
Must be cumbersome, also it can influence accuracy due to repeatedly weighing.
Therefore, it is necessary to which a kind of can solve a kind of Physical Experiment balance of problem above.
Utility model content
The purpose of this utility model is to overcome existing deficiency, there is provided a kind of Physical Experiment without counterweight and pointer is used
Balance.
To achieve the above object, technical scheme is used by the utility model：
A kind of Physical Experiment balance, including be arranged symmetrically on base, in addition to base two columns, in column up and down
The positioning screw rod of lateral arrangement between the sliding block of slip, column, the first screw mandrel, the second screw mandrel and the horizontal stroke being longitudinally arranged inside column
Beam, the column include hollow rectangular tube and are fixed on the top of rectangular tube upper end, and the top section is triangular in shape, top
Two inclined-planes between be provided with through hole, be provided with installing plate inside the rectangular tube upper end, the long side side wall of top two is opened provided with strip
Mouthful, the front and rear sides between two rectangular tubes are laid with limiting plate respectively, are respectively perpendicular and turn on the installing plate in two rectangular tubes
Dynamic to be connected with the first screw mandrel and the second screw mandrel, the first screw mandrel and the second screw mandrel bottom are connected to base, the first screw mandrel and second
Screw mandrel is connected to the first knob by rotating mechanism, and first knob is laid in base upper surface top, first screw mandrel
Be sheathed with sliding block on the second screw mandrel respectively, the positioning screw rod for sequentially passing through strip opening and sliding block is provided between two columns,
The positioning screw rod is threaded with fulcrum sliding block, and positioning screw rod is between two limiting plates, and described limiting plate one end is with standing
Post connection, the other end are connected with another column, and two column upper end frames are provided with crossbeam, and cylindrical gas is provided with the middle part of the crossbeam
Soaked level, crossbeam bottom have been arranged symmetrically two triangle notch, connected between the triangle notch and top upper through hole
There is U-shaped card.
Further, the rotating mechanism include be in turn secured to the first screw mandrel lower end and positioned at chassis interior it is concentric up and down
The first belt pulley and first gear, be fixed on the second screw mandrel lower end and positioned at chassis interior the second belt pulley and be fixed on
First knob lower end and the second gear for being located at chassis interior, first belt pulley and the second belt pulley are connected by belt,
The first gear is intermeshed with second gear, and the second gear and the first knob are coaxial.
Further, described positioning screw rod one end passes through the strip opening and sliding block on two rectangular tubes, positioning screw rod
A wherein termination baffle plate is fixed with by nut, the other end of positioning screw rod is fixed with the second knob.
Further, scale is printed on the crossbeam, there is pallet at crossbeam both ends by rope suspensions.
Further, the U-shaped card both ends are connected to the both sides of triangle notch, middle part through the through hole on top.
The beneficial effects of the utility model are：
The proportion of material is determined by the position of rotational positioning screw mandrel adjustment fulcrum sliding block support beam, fulcrum sliding block exists
Moved in limiting plate, not cracky；Crossbeam is connected by U-shaped card with column, and crossbeam is not easy to drop, lost；Can directly it claim
The proportion of material in the pallet of crossbeam both ends is measured, weighing step is few, improves weighing precision；And the ratio of two kinds of materials can be directly set
Weight, make crossbeam horizontal by adding materials, the material of proportion needed for acquisition is easy to operate, quick.
Brief description of the drawings
Fig. 1 is a kind of structural representation of Physical Experiment balance of the utility model.
Fig. 2 is a kind of using state structure diagram of Physical Experiment balance of the utility model.
In figure marked as：1 is base, and 2 be rectangular tube, and 3 be sliding block, and 4 be positioning screw rod, and 5 be the first screw mandrel, and 6 be second
Screw mandrel, 7 be crossbeam, and 8 be top, and 9 be installing plate, and 10 be fulcrum sliding block, and 11 be limiting plate, and 12 be U-shaped card, and 13 be the first skin
Belt wheel, 14 be first gear, and 15 be the second belt pulley, and 16 be second gear, and 17 be the first knob, and 18 be the second knob, and 19 are
Pallet, 20 be cylindrical level vial, and 21 be triangle notch, and 22 be baffle plate.
Embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, a kind of Physical Experiment balance, including two be arranged symmetrically on base 1, in addition to base 1
The positioning screw rod 4 of lateral arrangement between the sliding block 3 that is slided up and down in individual column, column, column, be longitudinally arranged inside column
One screw mandrel 5, the second screw mandrel 6 and crossbeam 7, the column include hollow rectangular tube 2 and are fixed on top the 8 of the upper end of rectangular tube 2,
Top 8 section is triangular in shape, and through hole is provided between top 8 two inclined-planes, installing plate is provided with inside the upper end of rectangular tube 2
9th, the long side side wall of top two is provided with strip opening, and the front and rear sides between two rectangular tubes 2 are laid with limiting plate 11 respectively, and two
It is respectively perpendicular on installing plate 9 in individual rectangular tube 2 and is rotatably connected to the first screw mandrel 5 and the second screw mandrel 6, the first screw mandrel 5 and second
The bottom of screw mandrel 6 is connected to base 1, the first screw mandrel 5 and the second screw mandrel 6 and is connected to the first knob 17 by rotating mechanism, described
Rotating mechanism includes being in turn secured to the lower end of the first screw mandrel 5 and positioned at chassis interior concentric the first belt pulley 13 and first up and down
Gear 14, it is fixed on the lower end of the second screw mandrel 6 and is located at the second belt pulley 15 of chassis interior and is fixed under the first knob 17
End and the second gear 16 for being located at chassis interior, first belt pulley 13 is connected with the second belt pulley 15 by belt, described
First gear 14 is intermeshed with second gear 16, and the second gear 16 and the first knob 17 are coaxial, first knob 17
The upper surface top of base 1 is laid in, sliding block 3 is sheathed with respectively on the screw mandrel 6 of the first screw mandrel 5 and second, is set between two columns
There is the positioning screw rod 4 for sequentially passing through strip opening and sliding block 3, the positioning screw rod 4 is threaded with fulcrum sliding block 10, described
The one end of positioning screw rod 4 passes through spiral shell through the strip opening on two rectangular tubes 2 and sliding block 3, a wherein termination for positioning screw rod 4
Mother is fixed with baffle plate 22, and the other end of positioning screw rod 4 is fixed with the second knob 18, positioning screw rod 4 positioned at two limiting plates 11 it
Between, described one end of limiting plate 11 is connected with column, the other end is connected with another column, and two column upper end frames are provided with crossbeam 7,
The middle part of crossbeam 7 is provided with cylindrical level vial 20, scale is printed on the crossbeam 7, the both ends of crossbeam 7 pass through rope suspensions
Have a pallet 19, the bottom of crossbeam 7 has been arranged symmetrically two triangle notch 21, on the triangle notch 21 and top 8 through hole it
Between be connected with U-shaped card 12, the both ends of U-shaped card 12 are connected to the both sides of triangle notch 21, middle part through on top 8
Through hole.
During the proportion of two kinds of materials of weighing, two kinds of materials are placed into the pallet 19 at the both ends of crossbeam 7 respectively, rotate first
Knob 17, the first knob 17 drive the first screw mandrel 5 and the second screw mandrel 6 to rotate, sliding block 3 is increased, the band of sliding block 3 by rotating mechanism
Fulcrum sliding block 10 on dynamic positioning screw rod 4 and positioning screw rod 4 together rises, when the summit of fulcrum sliding block 10 is higher than column summit
When, the second knob 18 is rotated according to the position of bubble in cylindrical level vial 20, the second knob 18 drives fulcrum sliding block 10
It is mobile, until the bubble of cylindrical level vial 20 is placed in the middle, two kinds of things are obtained by the signified scale of crossbeam 7 of fulcrum sliding block 10
The proportion of material；When needing to obtain the material of fixed proportion, the second knob 18 is first rotated, fulcrum sliding block 10 is moved to two kinds of materials
At required proportion, being rotated further by the first knob 17 makes the summit of fulcrum sliding block 10 be higher than column summit, to the support at the both ends of crossbeam 7
Added materials in disk 19, when bubble is placed in the middle in cylindrical level vial 20, that is, obtain two kinds of materials of required proportion.
Embodiment described above, simply preferred embodiment of the present utility model, is not limited of the present utility model
Practical range, therefore the equivalent change or modification that all construction, feature and principles according to described in the utility model patent scope are done,
It should be included in present utility model application the scope of the claims.
Claims (5)
1. a kind of Physical Experiment balance, including base（1）, it is characterised in that also including base（1）On be arranged symmetrically two
The sliding block slided up and down in column, column（3）, between column lateral arrangement positioning screw rod（4）, be longitudinally arranged inside column
First screw mandrel（5）, the second screw mandrel（6）And crossbeam（7）, the column includes hollow rectangular tube（2）Be fixed on rectangular tube（2）
Upper end it is top（8）, it is described top（8）Section is triangular in shape, top（8）Two inclined-planes between be provided with through hole, the rectangular tube
（2）Installing plate is provided with inside upper end（9）, the long side side wall of top two be provided with strip opening, two rectangular tubes（2）Between it is front and rear
Both sides are laid with limiting plate respectively（11）, two rectangular tubes（2）Interior installing plate（9）On be respectively perpendicular and be rotatably connected to first
Bar（5）With the second screw mandrel（6）, the first screw mandrel（5）With the second screw mandrel（6）Bottom is connected to base（1）, the first screw mandrel（5）With
Second screw mandrel（6）First knob is connected to by rotating mechanism（17）, first knob（17）It is laid in base（1）Upper surface
Top, first screw mandrel（5）With the second screw mandrel（6）It is upper to be sheathed with sliding block respectively（3）, it is provided between two columns and sequentially passes through length
Strip opening and sliding block（3）Positioning screw rod（4）, the positioning screw rod（4）It is threaded with fulcrum sliding block（10）, positioning screw rod
（4）Positioned at two limiting plates（11）Between, the limiting plate（11）One end is connected with column, the other end and another column connect
Connect, two column upper end frames are provided with crossbeam（7）, the crossbeam（7）Middle part is provided with cylindrical level vial（20）, crossbeam（7）
Bottom has been arranged symmetrically two triangle notch（21）, the triangle notch（21）With it is top（8）U is connected between upper through hole
Shape card（12）.
2. a kind of Physical Experiment balance according to claim 1, it is characterised in that the rotating mechanism includes solid successively
Due to the first screw mandrel（5）Lower end and positioned at chassis interior concentric the first belt pulley up and down（13）And first gear（14）, it is fixed
In the second screw mandrel（6）Lower end and the second belt pulley for being located at chassis interior（15）And it is fixed on the first knob（17）Lower end and position
In the second gear of chassis interior（16）, first belt pulley（13）With the second belt pulley（15）Connected by belt, it is described
First gear（14）With second gear（16）Intermeshing, the second gear（16）With the first knob（17）Coaxially.
A kind of 3. Physical Experiment balance according to claim 1, it is characterised in that the positioning screw rod（4）Wear one end
Cross two rectangular tubes（2）On strip opening and sliding block（3）, positioning screw rod（4）A wherein termination be fixed with by nut
Baffle plate（22）, positioning screw rod（4）The other end be fixed with the second knob（18）.
A kind of 4. Physical Experiment balance according to claim 1, it is characterised in that the crossbeam（7）On be printed on scale,
Crossbeam（7）There is pallet at both ends by rope suspensions（19）.
A kind of 5. Physical Experiment balance according to claim 1, it is characterised in that the U-shaped card（12）Both ends connect
It is connected to triangle notch（21）Both sides, middle part is through top（8）On through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720906994.2U CN206919990U (en) | 2017-07-25 | 2017-07-25 | A kind of Physical Experiment balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720906994.2U CN206919990U (en) | 2017-07-25 | 2017-07-25 | A kind of Physical Experiment balance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206919990U true CN206919990U (en) | 2018-01-23 |
Family
ID=61348237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720906994.2U Expired - Fee Related CN206919990U (en) | 2017-07-25 | 2017-07-25 | A kind of Physical Experiment balance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206919990U (en) |
-
2017
- 2017-07-25 CN CN201720906994.2U patent/CN206919990U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180123 Termination date: 20210725 |