CN106803386A - A kind of static balance teaching appliance - Google Patents

Abstract

The invention provides a static balance teaching instrument, which belongs to the technical field of mechanical education tools. Rotary head, handle, rotating rod, rotating wheel and turntable of the static balance teaching instrument; one end of the rotating rod passes through the inside of the handle and is connected with the rotating head, and the other end is rotationally connected with the middle part of the turntable; the turning wheel is set on the outer periphery of the turntable , a counterweight is installed on the turntable, and the counterweight is detachably connected to the turntable. The transportation device has the above-mentioned static balance teaching instrument, which greatly solves the problems of inconvenient carrying and complicated structure of the equipment for measuring the unbalance of the rotating body.

Description

A Static Balance Teaching Instrument

technical field

The invention relates to the technical field of mechanical education tools, in particular to a static balance teaching instrument.

Background technique

Static balancing equipment can accurately measure the unbalance of the rotating body. However, on the one hand, there are very few teaching aids for static balancing instruments on the market. On the other hand, since it requires computer equipment as the core equipment, this determines the The limitations of the use of the balance measurement test bench, that is, the current static balance measurement equipment cannot allow students to understand the static balance instrument more conveniently in the ordinary teaching process, but must go to the corresponding laboratory to participate in the experiment, which has caused a certain impact on the teaching activities. constraints. In addition, the static balance measurement test bench needs some parts with high sensitivity, and the computer is used as an aid, so the required cost will be too high for many teaching institutions.

Therefore, it is of great practical significance to design a static balance measuring instrument that is easy to carry, easy to use and low in cost for mechanics teachers.

Contents of the invention

One of the objects of the present invention is to provide a static balance teaching instrument, which aims to solve the problems of inconvenient portability and inconvenient use of static balance measuring instruments in the prior art;

Another object of the present invention is to provide another static balance teaching instrument, which aims to solve the problems of inconvenient operation and high cost of static balance measuring instruments in the prior art.

For realizing the above object, technical scheme of the present invention is:

A static balance teaching instrument for measuring the balance degree of a revolving body, the static balance teaching instrument includes a rotating head, a handle, a rotating rod, a rotating wheel and a rotating disk; one end of the rotating rod passes through the inside of the handle and It is connected with the turning head, and the other end is connected with the middle part of the turntable in rotation; the turning wheel is sleeved on the outer periphery of the turntable, and a counterweight is installed on the turntable, and the counterweight and the turntable Detachable connection.

As a preferred technical solution of the present invention, the turntable is provided with a positioning groove and a rotation hole, the positioning groove is symmetrically arranged in the eccentric direction of the turntable, and the rotation hole is opened in the middle of the turntable, so The rotating rod is rotatably connected with the rotating disk through the rotating hole.

As a preferred technical solution of the present invention, a counterweight hole is provided on the turntable, the counterweight is provided with a cotter pin, and the counterweight is connected to the counterweight hole by inserting the cotter pin into the counterweight hole. The turntable is connected.

As a preferred technical solution of the present invention, the counterweight includes a supporting block and a connecting block, the connecting block is installed on the supporting block, the supporting block is made of non-magnetic material, and the connecting block is made of magnetic material , the cotter pin is arranged on the connecting block.

As a preferred technical solution of the present invention, the supporting block is a rubber block, and the connecting block is a magnetic sheet.

As a preferred technical solution of the present invention, the runner is provided with an eccentric block and a turntable hole, the eccentric block is fixedly mounted on the runner and arranged eccentrically with the runner, and the turntable hole is used for The turntable is installed, and the hole of the turntable is set eccentrically with the runner.

As a preferred technical solution of the present invention, a positioning block is also provided on the eccentric position of the runner, and the positioning block cooperates with the positioning groove to radially fix the turntable on the runner .

As a preferred technical solution of the present invention, a spring seat is provided on the runner, a spring is provided in the spring seat, a circlip is provided on the hole of the turntable, and the circlip and the spring connect the A turntable is fixed axially on the wheel.

A static balance teaching instrument, the static balance teaching instrument comprises a rotating head, a handle, a rotating rod, a rotating wheel, a rotating disk and a counterweight; one end of the rotating rod passes through the inside of the handle and connects with the rotating head connected, and the other end is rotationally connected with the middle part of the turntable; the runner is sleeved on the outer periphery of the turntable, and a strip-shaped chute is opened on the turntable, and a locking mechanism is arranged in the chute. The counterweight can be moved to any position in the strip chute.

As a preferred technical solution of the present invention, the counterweight includes a support block and a connection block, the connection block is installed on the support block, the support block is made of non-magnetic material, and the connection block includes a plurality of Magnetic blocks of different sizes.

The beneficial effects of the present invention are:

The present invention provides a static balance teaching instrument through the above design. The static balance teaching instrument has a rotating head, a handle, a rotating rod, a rotating wheel and a rotating disk, wherein one end of the rotating rod is connected to the rotating head through the handle, and the other end is connected to the rotating disk. Rotationally connected, the runner is sleeved on the outer periphery of the turntable and fixedly connected with the turntable. At the same time, the turntable is provided with a counterweight detachably connected with the turntable. Since the static balance teaching instrument has a rotating wheel and a turntable, the rotating wheel is provided with an eccentric block, so the rotating wheel as a whole is a static unbalanced rotator, and a counterweight is added to the turntable to adjust the position of the counterweight on the turntable Or adjust the relative position of the turntable and the wheel to measure the static balance of the wheel and turntable when they are in eccentric and concentric states. It can be seen from the above that the static balance teaching instrument has a simple structure, convenient operation, and has the characteristics of easy portability and convenient use.

The present invention provides a static balance teaching instrument through the above design. The static balance teaching instrument has a rotating head, a handle, a rotating rod, a rotating wheel and a rotating disk, wherein one end of the rotating rod is connected to the rotating head through the handle, and the other end is connected to the rotating disk. Rotationally connected, the runner is sleeved on the outer periphery of the turntable and fixedly connected with the turntable. Since the static balance teaching instrument has a chute, the counterweight can be moved to any position in the chute. Therefore, when the static balance measurement is performed on the runner, the position of the counterweight can be constantly adjusted so that it can be at different positions on the turntable, so that the position of the center of mass of the runner and the turntable can be continuously adjusted; in addition, The counterweight includes a rubber block and a plurality of magnetic blocks of different sizes, so multiple magnetic blocks of different sizes can be removed from or placed on the counterweight to obtain counterweights of different qualities. From this design, it can be seen that the static balance teaching instrument can not only measure the static balance of the runner for many times, but also measure the position of the center of mass of the runner. It can be seen from the above that the static balance teaching instrument has a simple structure, convenient operation, and has the characteristics of easy portability and convenient use.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is the static balance teaching instrument structure schematic diagram that the first embodiment of the present invention provides;

Fig. 2 is the first angle view of the static balance teaching instrument provided by the first embodiment of the present invention;

Fig. 3 is a schematic structural diagram of the turntable provided by the first embodiment of the present invention;

Fig. 4 is a schematic structural view of the runner provided by the first embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a counterweight provided by the first embodiment of the present invention;

Fig. 6 is a schematic diagram of the structure of the static balance teaching instrument provided by the second embodiment of the present invention;

Fig. 7 is a schematic structural diagram of the turntable provided by the second embodiment of the present invention;

Fig. 8 is a schematic diagram of the cooperative connection structure between the chute and the counterweight provided by the second embodiment of the present invention;

Fig. 9 is a schematic structural diagram of the chute provided by the second embodiment of the present invention;

Fig. 10 is a schematic structural diagram of the counterweight provided by the second embodiment of the present invention.

Icons: 1-static balance teaching instrument; 2-rotor head; 3-handle; 4-rotary rod; 5-rotary wheel; 6-turntable; 7-counterweight; 8-positioning slot; Counterweight hole; 11-cotter pin; 12-support block; 13-connecting block; 14-eccentric block; 15-turntable hole; 16-locating block; 17-spring seat; 18-chute; 20-rubber block; 21-magnet; 22-cotter pin; 23-bearing; 24-circlip; 25-first end; 26-second end; 27-first slide rail; 28-second slide rail; 29-magnetic block; 30-protrusion.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the conventional placement of the inventive product during use. The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present invention .

In addition, in the present invention, unless otherwise clearly specified and limited, a first feature above or below a second feature may include that the first and second features are in direct contact, and may also include that the first and second features are not in direct contact with each other. contact but through additional feature contact between them. Moreover, the first feature on, above and above the second feature includes the first feature directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature being below, below and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that a component is absolutely level or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "connected" and "connected" should be interpreted in a broad sense, for example, it can be a fixed connection or an optional connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

First embodiment:

Please refer to Fig. 1 and Fig. 2, this embodiment provides a static balance teaching instrument 1, which is mainly used in the unevenness measurement experiment of the revolving body in the mechanical teaching, including the rotating head 2, the handle 3, the rotating rod 4, the rotating wheel 5, Turntable 6 and counterweight 7.

The handle 3 has a cylindrical structure, and the rotating rod 4 has opposite first ends 25 and second ends 26. The rotating rod 4 passes through the inside of the handle 3, and its first end 25 is fixedly connected to the rotating head 2 through a bearing 23. The second end 26 is connected with the turntable 6 through a nut. The rotating wheel 5 is sheathed on the outer circumference of the turntable 6 and is detachably connected with the turntable 6 . The counterweight 7 is detachably installed on the eccentric position of the turntable 6 .

Please refer to FIG. 1 and FIG. 3 , and refer to FIG. 2 together. The runner 5 is an annular structure with a certain thickness, and a turntable hole 15 is opened in its center, and the turntable hole 15 and the runner 5 are arranged eccentrically. At the same time, an annular eccentric block 14 is installed on the runner 5 ; two positioning blocks 16 are arranged symmetrically with the eccentric direction of the turntable hole 15 on the runner 5 . In addition, at least one spring seat 17 is installed on the runner 5, and a spring is installed in the spring seat 17;

In this embodiment, the runner 5 is made of rubber, and in other embodiments, it can also be made of other non-magnetic materials.

Please refer to Fig. 1 and Fig. 4, with reference to Fig. 2, the turntable 6 is in the shape of a thin disc, on which there are rotation holes 9 and counterweight holes 10, and two symmetrically arranged positioning blocks 16 are also provided. The positioning groove 8 is located in the eccentric direction of the turntable 6 . The turntable 6 is fixedly connected with the rotating rod 4 through the nut, and the spring and the snap ring 24 are used to compress the turntable 6 and axially fix the turntable 5 on the runner 5; at the same time, the turntable 6 radially fixed on the wheel 5.

In this embodiment, the turntable 6 is made of iron material, and in other embodiments, it can also be made of other magnetic materials.

Please refer to Figure 1 and Figure 5, and refer to Figure 2 together, the counterweight 7 includes a rubber block 20 and a magnetic piece 21, the magnetic piece 21 is installed on the rubber block 20, and the counterweight 7 is magnetically adsorbed on the turntable 6 through the counterweight hole 10 On the eccentric position, counterweight 7 is detachably connected with turntable 6 at the same time. A cylindrical cotter pin 22 is also installed on the magnetic sheet 21 . The cotter pin 22 is made of magnetic material and can be inserted into the counterweight hole 10 , so that the counterweight 7 is installed on the turntable 6 .

Please refer to Figure 1, with reference to Figure 2 to Figure 5, the working principle of this static balance teaching instrument 1 is:

First, adjust the rotating disk 6 so that the rotating hole 9 is concentric with the outer diameter of the rotating wheel 5, remove the counterweight 7, hold the handle 3, and turn the rotating head 2. The rotating rod 4 is connected, so the rotating disk 6 and the rotating wheel 5 also rotate; if the rotating rod 4 shakes obviously, it means that the unbalanced mass moment of the rotating wheel 5 exists on the radial plane where the center of mass is located, and there is no The existence of the couple moment means that the runner 5 is statically unbalanced.

Second, adjust the rotating disk 6 so that the rotating hole 9 is concentric with the outer diameter of the rotating wheel 5, and the counterweight 7 is arranged on the rotating disk 6. At this time, the rotating hole 9 is located at the center of the rotating wheel 5. If the rocking of the bar 4 is not obvious, then it shows that the runner 5 is statically balanced.

Third, adjust the turntable 6 so that the rotating hole 9 is eccentric to the outer diameter of the runner 5, and the runner 5 rotates eccentrically. If the rotating rod 4 shakes obviously at this time, it indicates that the runner 5 is statically unbalanced.

Fourth, adjust the turntable 6 so that the rotation hole 9 is eccentric to the outer diameter of the runner 5, and the counterweight 7 is arranged on the turntable 6 through the counterweight hole 10, and the runner 5 is rotated, and the runner 5 rotates eccentrically. 4. If the shaking is not obvious, it shows that the runner 5 is statically balanced.

In summary, since the static balance teaching instrument 1 has a runner 5 and a turntable 6, wherein the runner 5 is provided with an eccentric block 14, the runner 5 as a whole is a statically unbalanced revolving body, and a counterweight is added to the turntable 6 Block 7, adjust the position of the counterweight 7 on the turntable 6 or adjust the relative position of the turntable 6 and the runner 5, so as to measure the degree of static balance when the runner 5 and the turntable 6 are in eccentric and concentric states. It can be seen that the static balance teaching instrument 1 not only has good operability, small weight and volume, and is easy to carry, but also has a simple manufacturing process and low cost, and is suitable for large-scale promotion.

Second embodiment:

Please refer to Fig. 6 and Fig. 7, this embodiment provides a kind of static balance teaching instrument 1, and it is mainly used in the uneven measurement experiment of revolving body in mechanical teaching, and its difference with the first embodiment is: counterweight 7 and The connection mode of the turntable 6 is different.

In this embodiment, the static balance teaching instrument 1 includes a rotating head 2 , a handle 3 , a rotating rod 4 , a rotating wheel 5 , a rotating disk 6 and a counterweight 7 .

Please refer to Fig. 6, Fig. 7 and Fig. 8, with reference to Fig. 9, the turntable 6 includes a locking mechanism 19, and the locking mechanism 19 includes a chute 18, and first slide rails 27 are provided on the two side ends of the chute 18 As with the second slide rail 28, both have the same structure.

The two ends of the counterweight 7 are respectively arranged in the first slide rail 27 and the second slide rail 28 through the connecting piece, and the counterweight 7 can be moved in the first slide rail 27 and the second slide rail 28 under the drive of the connecting piece. slide. On the side of the chute 18, there are snap-fitting parts (not shown in the figure) that cooperate with the first slide rail 27 and the second slide rail 28 . A row of protrusions 30 is arranged at the port of the clamping part. The protrusion 30 is serrated and arranged in cooperation with the connecting piece, which can limit the sliding of the counterweight 7 , so that the counterweight 7 can move to any position in the slide groove 18 .

Please refer to FIG. 10 , with reference to FIG. 6 , the counterweight 7 includes a rubber block 20 and a plurality of magnetic blocks 29 of different sizes. At the eccentric position of the turntable 6, the counterweight 7 is detachably connected with the turntable 6.

In conclusion, since the static balance teaching instrument 1 has the chute 18 , the counterweight 7 can move to any position in the chute 18 . Therefore, when the static balance measurement is carried out to the runner 5, the position of the counterweight 7 can be constantly adjusted so that it can be in different positions on the turntable 6, so that the balance between the runner 5 and the turntable 6 can be constantly adjusted. The position of the center of mass; in addition, the counterweight 7 includes a rubber block 20 and a plurality of magnets 29 of different sizes, so a plurality of magnets 29 of different sizes can be removed or placed on the counterweight 7 to obtain different Mass counterweight7. It can be seen from this design that the static balance teaching instrument 1 can not only measure the static balance of the runner 5 multiple times, but also measure the position of the center of mass of the runner 5 . It can be seen that the static balance teaching instrument 1 not only has good operability, small weight and volume, and is easy to carry, but also has a simple manufacturing process and low cost, and is suitable for large-scale promotion.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a kind of static balance teaching appliance, the degree of balance for determining revolving body, it is characterised in that：The static balance teaching appliance includes Rotary head, handle, bull stick, runner and rotating disk；One end of the bull stick is connected through the inside of the handle and with the rotary head, The other end is rotated with the middle part of the rotating disk and is connected；The runner is set in the periphery of the rotating disk, is provided with the rotating disk Balancing weight, the balancing weight is removably connected with the rotating disk.

2. static balance teaching appliance according to claim 1, it is characterised in that：Locating slot and rotation are provided with the rotating disk Hole, the locating slot is symmetricly set on the eccentric direction of the rotating disk, and the rotating hole is opened in the middle part of the rotating disk, institute Bull stick is stated to be connected with rotating disk rotation by the rotating hole.

3. static balance teaching appliance according to claim 2, it is characterised in that：It is further opened with the rotating disk with repeated hole, institute State balancing weight and be provided with split pin, the balancing weight inserts described with connecting with the rotating disk in repeated hole by by the split pin Connect.

4. static balance teaching appliance according to claim 3, it is characterised in that：The balancing weight includes support block and connection Block, the contiguous block is arranged in the support block, and the support block is non magnetic material, and the contiguous block is magnetic material, The split pin is arranged on the contiguous block.

5. static balance teaching appliance according to claim 4, it is characterised in that：The support block is block rubber, the connection Block is magnetic sheet.

6. static balance teaching appliance according to claim 5, it is characterised in that：The runner is provided with eccentric block and rotating disk Hole, the eccentric block be fixedly mounted on the runner and with the runner eccentric setting, the turret apertures are used to install described Rotating disk, the turret apertures and the runner eccentric setting.

7. static balance teaching appliance according to claim 6, it is characterised in that：It is additionally provided with the eccentric position of the runner Locating piece, the locating piece cooperates with the locating slot and is radially fixed on the runner with by the rotating disk.

8. static balance teaching appliance according to claim 7, it is characterised in that：Spring base is provided with the runner, it is described Spring is provided with spring base, jump ring is provided with the turret apertures, the jump ring, the spring are axially solid by the rotating disk It is scheduled on the runner.

9. a kind of static balance teaching appliance, it is characterised in that：The static balance teaching appliance include rotary head, handle, bull stick, runner, turn Disk and balancing weight；One end of the bull stick through the handle inside and be connected with the rotary head, the other end with described turn The middle part of disk rotates connection；The runner is set in the periphery of the rotating disk, and the chute of strip is offered on the rotating disk, described Lockable mechanism is provided with chute, the balancing weight is movable to the optional position in the strip chute.

10. static balance teaching appliance according to claim 9, it is characterised in that：The balancing weight includes support block and connection Block, the contiguous block is arranged in the support block, and the support block is non magnetic material, and the contiguous block includes multiple different The magnetic patch of size.