CN206757969U - A kind of friction force demonstration experiment instrument - Google Patents

Abstract

The utility model discloses a kind of friction force demonstration experiment instrument, including support base, the top left hand of the support base is provided with protractor, installing plate is installed on the right side of the protractor, the protractor is connected by connecting shaft with installing plate, the upper surface of the installing plate is provided with dovetail groove, and dovetail groove slide bar is provided with the inside of the dovetail groove.The friction force demonstration experiment instrument, weight block is put into storage drawer, the relation of weight and frictional force can be measured, pull experiment porch, dovetail groove slide bar can be made to be slided in dovetail groove, experiment porch can be twitched out, change the experiment porch of surface different roughness, the relation of roughness and frictional force can be measured, pushes up support base, the angle of support base can be adjusted, it is capable of the relation of measurement angle and frictional force, during experiment, it can need to carry out corresponding regulation according to using, realize the Multifunctional demonstration of different affecting factors.

Description

A kind of friction force demonstration experiment instrument

Technical field

Technical field of physical experiment is the utility model is related to, specially a kind of friction force demonstration experiment instrument.

Background technology

The inquiry experiment of friction effects factor is the common basic mechanical experiment of physics, and the experiment is generally carried out by teacher Demonstrating, the key point of the experiment are to ensure that the uniform motion of object, with dynamometer measure object of which movement when it is suffered Frictional force, qualitative, quantitative analysis is then carried out according to the size of frictional force, then obtain influenceing frictional force it is several because Element.Common friction force demonstration experiment instrument, generally use weight beam measurement frictional force, with the motion of guide rail instead of object Motion.Such as the patent of Patent No. 201220621566.2, including the data processor of substrate, friction slide plate, one group of difference The friction demonstration block of quality and pulling force sensor, fixed pulley, the digital display screen composition for being installed on vertical panel, although structure is simple It is prompt, manufacture easily, convenient experimental operation, strong demonstrating visual's property the advantages of, but demonstrating effect unobvious, function are simpler Single, phenomenon is not obvious enough, it is difficult to attracts the notice of student, stimulating students ' interestses on classroom.

Utility model content

The purpose of this utility model is to provide a kind of friction force demonstration experiment instrument, to solve to propose in above-mentioned background technology The problem of.

To achieve the above object, the utility model provides following technical scheme：A kind of friction force demonstration experiment instrument, including branch Base is supportted, the top left hand of the support base is provided with protractor, installing plate, the amount are provided with the right side of the protractor Angle device is connected by connecting shaft with installing plate, and the upper surface of the installing plate is provided with dovetail groove, the inner side installation of the dovetail groove There is dovetail groove slide bar, the dovetail groove coordinates with dovetail groove slide bar and is connected, and the top of the dovetail groove slide bar is provided with experiment and put down Platform, the upper surface of the experiment porch are provided with chute, and sliding block is provided with the inside of the chute, and the chute coordinates phase with sliding block Even, the top of the sliding block is provided with casing, and the inner chamber of the casing is provided with storage drawer, is provided with the right side of the casing Draw ring, tensiometer is installed on the right side of the draw ring.

Preferably, adjusting means is mounted at left and right sides of the bottom of the support base, the adjusting means includes interior Cylinder, be socketed with the collar on the outer wall of the inner cylinder, be mounted on rotor plate at left and right sides of the collar, the rotor plate it is outer Side is provided with support bar, and the rotor plate is connected by the first bolt with support bar, and the top of the inner cylinder is provided with outer barrel, institute Outer barrel is stated by the second bolt with inner cylinder to be connected.

Preferably, the bottom of the support bar is provided with sucker.

Preferably, the junction of the outer barrel and support base is provided with securing plate.

Preferably, arm-tie is installed on the right side of the tensiometer.

Compared with prior art, the beneficial effects of the utility model are：The friction force demonstration experiment instrument, passes through chute and cunning Block, which coordinates, to be connected, and pulls tensiometer sliding block can be made to be slided in chute, and casing slides on experiment porch, can pass through drawing Power meter observes pulling force size, pulls storage drawer storage drawer can be pulled out of casing and comes out, is put into storage drawer Weight block, the relation of weight and frictional force can be measured, be coordinated by dovetail groove with dovetail groove slide bar and be connected, pull experiment porch Dovetail groove slide bar can be made to be slided in dovetail groove, experiment porch can be twitched out, carry out changing surface different roughness Experiment porch, the relation of roughness and frictional force can be measured, by connecting shaft support base can be made to turn in protractor It is dynamic, support base is pushed up, the angle of support base can be adjusted, is capable of the relation of measurement angle and frictional force, during experiment, It can need to carry out corresponding regulation according to using, realize the Multifunctional demonstration of different affecting factors, demonstrating effect is directly perceived, It is interesting strong, strong support can be provided for the teaching of friction effects factor.

Brief description of the drawings

Fig. 1 is the utility model structure diagram；

Fig. 2 is oat tail groove structure schematic diagram of the present utility model.

In figure：1st, adjusting means, 101, inner cylinder, 102, the collar, the 103, first bolt, 104, rotor plate, 105, support bar, 106th, sucker, the 107, second bolt, 108, outer barrel, 109, securing plate, 2, support base, 3, protractor, 4, connecting shaft, 5, experiment Platform, 6, casing, 7, draw ring, 8, tensiometer, 9, arm-tie, 10, installing plate, 11, dovetail groove, 12, dovetail groove slide bar, 13, chute, 14th, sliding block, 15, storage drawer.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belong to the scope of the utility model protection.

Fig. 1-2 is referred to, the utility model provides a kind of technical scheme：A kind of friction force demonstration experiment instrument, including support Base 2, the top left hand of support base 2 are provided with protractor 3, and the right side of protractor 3 is provided with installing plate 10, and protractor 3 is logical Cross connecting shaft 4 with installing plate 10 to be connected, by connecting shaft 4 support base 2 can be made to be rotated in protractor 3, push up branch Base 2 is supportted, the angle of support base 2 can be adjusted, is capable of the relation of measurement angle and frictional force, can be according to making during experiment With needing to carry out corresponding regulation, the upper surface of installing plate 10 is provided with dovetail groove 11, and the inner side of dovetail groove 11 is provided with dovetail Groove slide bar 12, dovetail groove 11 coordinate with dovetail groove slide bar 12 and are connected, and are coordinated by dovetail groove 11 with dovetail groove slide bar 12 and are connected, and draw Dynamic experiment porch 5 can be such that dovetail groove slide bar 12 is slided in dovetail groove 11, experiment porch 5 can be twitched out, carry out more The experiment porch of surface different roughness is changed, the relation of roughness and frictional force, the top peace of dovetail groove slide bar 12 can be measured Equipped with experiment porch 5, the upper surface of experiment porch 5 is provided with chute 13, and the inner side of chute 13 is provided with sliding block 14, and chute 13 is with sliding Block 14, which coordinates, to be connected, and the top of sliding block 14 is provided with casing 6, and the inner chamber of casing 6 is provided with storage drawer 15, pulls storage drawer 15, storage drawer 15 can be pulled out of casing 6 and come out, weight block is put into storage drawer 15, can measure weight with The relation of frictional force, the right side of casing 6 are provided with draw ring 7, and the right side of draw ring 7 is provided with tensiometer 8, the right side peace of tensiometer 8 Equipped with arm-tie 9, tensiometer 8 can more easily be pulled by arm-tie 9, coordinated by chute 13 with sliding block 14 and be connected, pull and draw Power meter 8 can be such that sliding block 14 is slided in chute 13, and casing 6 slides on experiment porch 5, can be observed by tensiometer 8 Pulling force size, the bottom left and right sides of support base 2 are mounted on adjusting means 1, and adjusting means 1 includes inner cylinder 101, inner cylinder The collar 102 is socketed with 101 outer wall, the left and right sides of the collar 102 is mounted on rotor plate 104, the outside peace of rotor plate 104 Equipped with support bar 105, rotor plate 104 is connected by the first bolt 103 with support bar 105, and the bottom of support bar 105 is provided with suction Disk 106, the stability for strengthening support bar 105 on the table support bar 105 can be adsorbed by sucker 106, inner cylinder 101 Top is provided with outer barrel 108, and outer barrel 108 is connected by the second bolt 107 with inner cylinder 101, outer barrel 108 and the company of support base 2 The place of connecing is provided with securing plate 109, can strengthen the stability of outer barrel 108 by securing plate 109, and loosening the first bolt 103 can Support bar 105 is rotated in rotor plate 104, can strut, can fold up when not in use, convenient use when in use, The second bolt 107 is loosened, inner cylinder 101 can be made to be slided in outer barrel 108, overall height can be adjusted, facilitate different heights Teacher use, and gradient can be adjusted, be convenient for measuring the relation of angle and frictional force, increase overall practicality.

It is connected in use, being coordinated by chute 13 with sliding block 14, pulls tensiometer 8 that sliding block 14 can be made sliding in chute 13 It is dynamic, and casing 6 is slided on experiment porch 5, and pulling force size can be observed by tensiometer 8, pull storage drawer 15 can be Storage drawer 15 is pulled out of casing 6 and come out, and is put into weight block into storage drawer 15, can be measured the pass of weight and frictional force System, coordinated by dovetail groove 11 with dovetail groove slide bar 12 and be connected, pulled experiment porch 5, dovetail groove slide bar 12 can be made in dovetail Slided in groove 11, experiment porch 5 can be twitched out, change the experiment porch of surface different roughness, can measure The relation of roughness and frictional force, by connecting shaft 4 support base 2 can be made to be rotated in protractor 3, push up support bottom Seat 2, the angle of support base 2 can be adjusted, be capable of the relation of measurement angle and frictional force, can be according to using need during experiment Corresponding regulation is carried out, realizes the Multifunctional demonstration of different affecting factors.

In description of the present utility model, it is to be understood that term " coaxial ", " bottom ", " one end ", " top ", " in Portion ", " other end ", " on ", " side ", " top ", " interior ", " front portion ", " center ", the orientation of the instruction such as " both ends " or position close It is to be described based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model and simplifying, rather than Indicate or imply that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore can not It is interpreted as to limitation of the present utility model.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " setting ", " connection ", " Gu Calmly ", the term such as " spinning " should be interpreted broadly, and also can be to be detachably connected for example, can be fixedly connected, or integrally； Can mechanically connect, also can be electrical connection；Can be joined directly together, can be also indirectly connected by intermediary, can It is connection or the interaction relationship of two elements of two element internals, is limited unless otherwise clear and definite, for this area For those of ordinary skill, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.

While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art, It will be appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of friction force demonstration experiment instrument, including support base (2), it is characterised in that：The top of the support base (2) is left Side is provided with protractor (3), and installing plate (10) is provided with the right side of the protractor (3), and the protractor (3) passes through connecting shaft (4) it is connected with installing plate (10), the upper surface of the installing plate (10) is provided with dovetail groove (11), the inner side of the dovetail groove (11) Dovetail groove slide bar (12) is installed, the dovetail groove (11) coordinates with dovetail groove slide bar (12) and is connected, the dovetail groove slide bar (12) top is provided with experiment porch (5), and the upper surface of the experiment porch (5) is provided with chute (13), the chute (13) Inner side sliding block (14) is installed, the chute (13) coordinates with sliding block (14) and is connected, and the top of the sliding block (14) is provided with Casing (6), the inner chamber of the casing (6) are provided with storage drawer (15), draw ring (7), institute are provided with the right side of the casing (6) State and tensiometer (8) is installed on the right side of draw ring (7).

A kind of 2. friction force demonstration experiment instrument according to claim 1, it is characterised in that：The bottom of the support base (2) The end left and right sides is mounted on adjusting means (1), and the adjusting means (1) includes inner cylinder (101), the inner cylinder (101) outside The collar (102) is socketed with wall, rotor plate (104), the rotor plate are mounted at left and right sides of the collar (102) (104) support bar (105) is installed, the rotor plate (104) passes through the first bolt (103) and support bar (105) phase on the outside of Even, the top of the inner cylinder (101) is provided with outer barrel (108), and the outer barrel (108) passes through the second bolt (107) and inner cylinder (101) it is connected.

A kind of 3. friction force demonstration experiment instrument according to claim 2, it is characterised in that：The bottom of the support bar (105) End is provided with sucker (106).

A kind of 4. friction force demonstration experiment instrument according to claim 2, it is characterised in that：The outer barrel (108) and support The junction of base (2) is provided with securing plate (109).

A kind of 5. friction force demonstration experiment instrument according to claim 1, it is characterised in that：The right side of the tensiometer (8) Arm-tie (9) is installed.