Multifunctional teaching aid

Abstract

The invention discloses a multifunctional teaching aid which comprises a support, a through groove is formed in the top end of the support, mounting plates and two bearing seats are arranged on the two sides of the top end of the support, the two bearing seats are coaxially arranged and located on the mounting plates at the two ends of the through groove respectively, and a vertical frame is arranged on one side of the through groove. The upper end of the vertical frame is provided with a horizontal frame horizontally extending to the middle of the through groove, the horizontal frame is provided with a centering device, a first positioning hole and a second positioning hole, the first positioning hole is formed in the periphery of the through groove and used for being detachably connected with a brake, and the second positioning hole is formed in the periphery of the through groove and used for being detachably connected with a supporting frame. The support of the teaching aid is connected with the brake and the supporting frame through the first positioning hole and the second positioning hole respectively to adapt to different types of training and teaching, the centering device is used for centering training, the effect that one device meets various teaching and training can be achieved, and assistance can be provided for demonstration teaching and practical operation training.

Description

Technical Field

[0001] The invention belongs to the technical field of teaching aids, and more specifically, relates to a multifunctional teaching aid. Background Art

[0002] The measurement and adjustment of the center of the hydro-turbine generator set, and the measurement and adjustment of the levels of each component are important processes in the installation, maintenance and technical transformation of the unit. The accuracy of the measurement and adjustment of the center and level directly affects the installation and maintenance quality of the entire hydro-turbine generator set. Through the unit center measurement, the roundness and concentricity of each fixed component can be understood to check the accuracy and precision of the unit center measurement and adjustment during the installation of the unit, and to understand whether the unit center has changed and how much it has changed after a long period of operation. The results of the unit center measurement are an important basis for the adjustment of the unit axis. The horizontality, which is equally important as the axis, also has strict requirements during installation and maintenance, and needs to be achieved through relatively accurate measurement and adjustment to meet the preset requirements.

[0003] At present, the teaching aids have a single function. For example, the conventional method for measuring the center of the unit is mainly to use the piano wire headphone method, that is, to use the piano wire, measuring rod and headphone wire to form a loop. When the micrometer installed on the measuring rod touches the piano wire, the headphone wire is connected, and the headphone emits a side ear sound. At this time, the micrometer reading is the relative distance of the measuring point; the horizontal measurement is mainly carried out using a coincidence level. Various functions are scattered and occupy a large space, which is difficult to adapt to the comprehensive teaching training in the classroom. Therefore, a teaching aid that can meet various types of operations is needed. Summary of the invention

[0004] The purpose of the present invention is to provide a multifunctional teaching aid to solve the problems that the existing teaching aids have single functions, various functions are scattered and occupy a large space, and are difficult to adapt to comprehensive teaching and training in the classroom.

[0005] In order to achieve the above object, the present invention provides a multifunctional teaching aid, comprising:

[0006] A bracket, wherein a through slot is provided at the top of the bracket, and mounting plates are provided at both sides of the top of the bracket;

[0007] Two bearing seats, the two bearing seats are coaxially arranged and respectively located on the mounting plates at both ends of the through slot;

[0008] A vertical frame, the vertical frame is arranged on one side of the through slot, a horizontal frame is arranged on the upper end of the vertical frame and extends horizontally toward the middle of the through slot, and a centering device is arranged on the horizontal frame;

[0009] A first positioning hole, the first positioning hole is arranged at the periphery of the through slot, and the first positioning hole is used for detachably connecting the brake;

[0010] A second positioning hole, wherein the second positioning hole is arranged at the periphery of the through slot, and the second positioning hole is used for detachably connecting the support frame.

[0011] Optionally, a transverse and longitudinal slide is provided on the horizontal frame, and the centering device is provided on the transverse and longitudinal slide.

[0012] Optionally, it also includes a sliding block, which is arranged between the through slot and the stand and reciprocates between the two bearing seats, and a dial indicator seat is arranged on the sliding block.

[0013] Optionally, when the first positioning hole is connected to the brake, the bearing seat is connected to the brake wheel.

[0014] Optionally, it further comprises a rotating ring, which is arranged on the horizontal frame and located below the centring device, and the rotating ring is detachably connected to a vertical shaft or a coupling;

[0015] The support frame comprises a ring body, one end of which is provided with a lower support rod matched with the second connecting hole, and the other end of the ring body is circumferentially distributed with telescopically adjustable adjustment rods, and the adjustment rods are used to support the component to be tested.

[0016] Optionally, the rotating ring and the supporting frame are coaxially arranged.

[0017] Optionally, a piano wire is further included. When the second positioning hole is connected to a support frame, a cylindrical component to be tested is provided on the support frame, one end of the piano wire is connected to the centring device, and the other end of the piano wire vertically passes through the component to be tested and the through slot.

[0018] Optionally, a buffer bucket having a radius not less than that of the component to be tested is arranged directly below the through slot, a buffer solution is arranged in the buffer bucket, and a plumb bob is arranged on the piano wire, and the plumb bob is in contact with the buffer solution.

[0019] Optionally, a radio headset is also included, and a radio end of the radio headset is arranged close to the piano wire.

[0020] Optionally, the support is a double-layer frame structure in the shape of a quadrangular pyramid.

[0021] The present invention provides a multifunctional device, and its beneficial effects are:

[0022] The bracket of the teaching aid is connected to the brake and the support frame through the first positioning hole and the second positioning hole respectively to adapt to different types of training and teaching uses. The centering device is used for centering training, so that one device can meet the needs of multiple teaching and training uses, and can provide assistance for demonstration teaching and practical training.

[0023] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0025] Figure 1 A structural schematic diagram of coaxiality training of a teaching aid according to an embodiment of the present invention is shown.

[0026] Figure 2 A structural schematic diagram of gap training of a teaching aid according to an embodiment of the present invention is shown.

[0027] Figure 3 A structural schematic diagram of a leveling training of a teaching aid according to an embodiment of the present invention is shown.

[0028] Figure 4 A structural schematic diagram of center-finding training of a teaching aid according to an embodiment of the present invention is shown.

[0029] Description of reference numerals:

[0030] 1. Mounting plate; 2. Bracket; 3. Bearing seat; 4. Stand; 5. Brake; 6. Support frame; 7. Centering device; 8. Part to be tested; 9. Piano wire; 10. Radio headphones; 11. Plumb bob; 12. Buffer barrel; 13. Vertical axis. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0032] like Figure 1-4 As shown, a multifunctional teaching aid comprises:

[0033] A bracket 2, a through slot is provided at the top of the bracket 2, and mounting plates 1 are provided on both sides of the top of the bracket 2;

[0034] Two bearing seats 3 are coaxially arranged and respectively located on the mounting plate 1 at both ends of the through slot;

[0035] A stand 4, the stand 4 is arranged at one side of the through slot, a horizontal frame extending horizontally toward the middle of the through slot is arranged at the upper end of the stand 4, and a centering device 7 is arranged on the horizontal frame;

[0036] A first positioning hole, which is arranged at the outer periphery of the through slot and is used for detachably connecting the brake 5;

[0037] The second positioning hole is arranged on the outer periphery of the through slot, and the second positioning hole is used for detachably connecting the support frame 6 .

[0038] Specifically, the bracket 2 is connected to the brake 5 and the support frame 6 through the first positioning hole and the second positioning hole respectively to adapt to different types of training and teaching uses, wherein the centering device 7 is used for centering training, so that one device can meet the needs of multiple teaching and training uses.

[0039] In this embodiment, a horizontal frame is provided with a transverse and longitudinal slide, and the centering device 7 is provided on the transverse and longitudinal slide.

[0040] Specifically, the installation errors between the second connecting hole and the support frame 6, and between the support frame 6 and the component to be measured 8 are compensated by the horizontal and vertical slides, and the position of the centering device 7 can also be finely adjusted to adapt to different teaching uses.

[0041] In this embodiment, a slider is also included. The slider is arranged between the through slot and the stand 4 and reciprocates between the two bearing seats 3. A dial indicator seat is arranged on the slider.

[0042] Specifically, during the coaxiality training, the dial indicator is connected through the slider, so that when the bearing seat 3 is connected to the coupling, the coupling is detected by the dial indicator.

[0043] Furthermore, a dial indicator on the slider measures the coaxiality of the coupling, and a dial indicator can also be set on the axial end to achieve simultaneous axial and radial measurement.

[0044] In this embodiment, when the first positioning hole is connected to the brake 5, the bearing seat 3 is connected to the brake wheel.

[0045] Specifically, during the clearance training, the brake 5 is used to hold the brake wheel tightly, and then a feeler gauge is used to measure the clearance between the brake 5 and the brake wheel, so as to simulate on-site maintenance teaching.

[0046] In this embodiment, a rotating ring is also included. The rotating ring is arranged on a horizontal frame and is located below the centering device 7. The rotating ring is detachably connected to a vertical shaft 13 or a coupling.

[0047] The support frame 6 includes a ring body, one end of which is provided with a lower support rod matched with the second connecting hole, and the other end of the ring body is circumferentially distributed with telescopically adjustable adjustment rods, which are used to support the component to be tested 8.

[0048] Specifically, the vertical shaft 13 is connected by a rotating ring, and the axial direction of the vertical shaft 13 coincides with the axis of the component to be measured 8. During leveling training, the dial indicator is fixed on the vertical shaft 13 to adjust the flatness of the upper surface of the component to be measured 8, and the adjustment process can be adjusted by telescopic adjustment rod.

[0049] Furthermore, the centering device 7 and the rotating ring are integrated on the horizontal and vertical slides at the same time, and the two are concentric;

[0050] Or no rotating ring is provided, the vertical shaft is fixed vertically and cannot rotate, but the vertical shaft sleeve is provided with a rotating sleeve, and the dial indicator is fixed on the rotating sleeve to meet the needs of rotating flatness measurement.

[0051] In this embodiment, the rotating ring and the supporting frame 6 are coaxially arranged.

[0052] Specifically, the support frame 6 and the rotating ring are coaxially arranged to facilitate leveling teaching and training.

[0053] In this embodiment, a piano wire 9 is also included. When the second positioning hole is connected to the support frame 6, a cylindrical component to be tested 8 is provided on the support frame 6. One end of the piano wire 9 is connected to the centering device 7, and the other end of the piano wire 9 vertically passes through the component to be tested 8 and the through groove.

[0054] Specifically, the centering device 7 is extended axially through the piano wire 9 to confirm the center of the component 8 to be measured on the support frame 6. When used during centering training, the sound quality and measurement accuracy can be improved by wearing a radio headset 10. One end of the inner diameter micrometer measuring rod is placed close to the component measuring point, and the probe is aimed at the piano wire 9 to make up, down, left and right arc movements. While adjusting the length of the micrometer, draw a circle on the piano wire 9, gradually shrinking from a large circle to a point. When a small "cluck" sound is emitted from the headset when it is touched, the adjustment should be stopped immediately. At least four measuring points are distributed circumferentially on the component 8 to be measured.

[0055] In this embodiment, a buffer barrel 12 having a radius not less than that of the component to be tested 8 is provided directly below the through slot, a buffer solution is provided in the buffer barrel 12, and a plumb bob 11 is provided on the piano wire 9, and the plumb bob 11 is in contact with the buffer solution.

[0056] Specifically, the piano wire 9 is kept vertical by the plumb bob 11, and the shaking is reduced by the buffer so that the piano wire 9 quickly calms down after being touched and shaken.

[0057] In this embodiment, a radio headset 10 is also included, and a radio end of the radio headset 10 is arranged close to the piano wire 9.

[0058] Specifically, the sound receiving earphone 10 reduces environmental interference and improves sensitivity to touch sounds.

[0059] In this embodiment, the bracket 2 is a double-layer frame structure in the shape of a quadrangular pyramid.

[0060] Specifically, the bracket 2 of the four-sided platform mechanism ensures stable support, and at the same time facilitates the movement and placement of the buffer bucket 12 during centering training, and after the centering training, the vertical shaft 13 is installed from below through the component to be tested 8 without moving the component to be tested 8.

[0061] This embodiment is a multi-functional use, taking teaching use as an example:

[0062] like Figure 1 As shown, during the coaxiality training, the dial indicator is connected to the slider, the dial indicator is moved by the slider and the coupling is rotated at the same time, and the coaxiality of the coupling is detected by the dial indicator. It can be used for the coaxiality adjustment training of water pumps, gear boxes, motors, etc.

[0063] like Figure 2 As shown, during the clearance training, the coupling is replaced with a brake wheel, and a brake 5 is added at the same time. The brake 5 holds the brake wheel tightly, and then a feeler gauge is used to measure the clearance between the brake 5 and the brake wheel. The adjustment of the brake clearance of the hoist is simulated for on-site maintenance teaching;

[0064] like Figure 3 As shown, during the leveling training, the vertical shaft 13 is installed, and the dial indicator is fixed on the vertical shaft 13 to adjust the flatness of the upper surface of the component to be tested 8. During the adjustment process, the telescopic adjustment rod is used to adjust the level of the thrust head of the vertical unit on site;

[0065] like Figure 4 As shown, during the centering training, wear a radio headset 10 to improve the sound quality and measurement accuracy. Use one end of the inner diameter micrometer measuring rod to close to the component measuring point, and aim the measuring head at the piano wire 9 to make up, down, left and right arc movements. While adjusting the length of the micrometer, draw a circle on the piano wire 9, gradually shrinking from a large circle to a point. When a small "click" sound is emitted from the headset when it is touched, the adjustment should be stopped immediately. At least four measuring points are distributed circumferentially on the component to be measured 8. It is used for teaching the vertical concentric adjustment simulation of on-site maintenance of vertical units.

[0066] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A multifunctional teaching tool, which has the advantages of: A bracket, wherein a through slot is provided at the top of the bracket, and mounting plates are provided at both sides of the top of the bracket; Two bearing seats, the two bearing seats are coaxially arranged and respectively located on the mounting plates at both ends of the through slot; A vertical frame, the vertical frame is arranged on one side of the through slot, a horizontal frame is arranged on the upper end of the vertical frame and extends horizontally toward the middle of the through slot, and a centering device is arranged on the horizontal frame; A first positioning hole, the first positioning hole is arranged at the periphery of the through slot, and the first positioning hole is used for detachably connecting the brake; A second positioning hole, wherein the second positioning hole is arranged at the periphery of the through slot, and the second positioning hole is used for detachably connecting the support frame.

2. The multifunctional teaching aid according to claim 1, characterized in that: The horizontal frame is provided with a transverse and longitudinal slide, and the centering device is provided on the transverse and longitudinal slide.

3. The multifunctional teaching aid according to claim 1, characterized in that: It also includes a sliding block, which is arranged between the through slot and the stand and reciprocates between the two bearing seats. A dial indicator seat is arranged on the sliding block.

4. The multifunctional teaching aid according to claim 1, characterized in that: When the first positioning hole is connected to the brake, the bearing seat is connected to the brake wheel.

5. The multifunctional teaching aid according to claim 1, characterized in that: It also includes a rotating ring, which is arranged on the horizontal frame and located below the centering device, and the rotating ring is detachably connected to a vertical shaft or a coupling; The support frame comprises a ring body, one end of which is provided with a lower support rod matched with the second connecting hole, and the other end of the ring body is circumferentially distributed with telescopically adjustable adjustment rods, and the adjustment rods are used to support the component to be tested.

6. The multifunctional teaching aid according to claim 5, characterized in that: The rotating ring and the supporting frame are coaxially arranged.

7. The multifunctional teaching aid according to claim 1, characterized in that: It also includes a piano wire. When the second positioning hole is connected to the support frame, a cylindrical component to be tested is arranged on the support frame. One end of the piano wire is connected to the centring device, and the other end of the piano wire vertically passes through the component to be tested and the through slot.

8. The multifunctional teaching aid according to claim 7, characterized in that: A buffer bucket having a radius no smaller than that of the component to be tested is arranged directly below the through slot, a buffer solution is arranged in the buffer bucket, and a plumb bob is arranged on the piano wire, and the plumb bob is in contact with the buffer solution.

9. The multifunctional teaching aid according to claim 7, characterized in that: It also includes a radio headset, wherein the radio end of the radio headset is arranged close to the piano wire.

10. The multifunctional teaching aid according to claim 1, characterized in that: The support is a double-layer frame structure in the shape of a quadrangular pyramid.

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