Demonstration teaching aid for principle decomposition of direct-current stabilized power supply

Abstract

The utility model discloses a direct-current stabilized power supply principle decomposition teaching aid, belongs to the technical field of teaching aids, and aims to solve the problem that the teaching of a decomposed direct-current stabilized power supply is inconvenient due to the fact that the decomposed direct-current stabilized power supply has more spare and accessory parts, and a teaching aid for fixing a plurality of the spare and accessory parts of the direct-current stabilized power supply is lacked at present. Comprising a teaching aid bottom plate, a lifting mechanism is arranged on one side of the teaching aid bottom plate, and a teaching mechanism is arranged on the surface of the lifting mechanism; the lifting mechanism comprises two hollow rods, one end of each hollow rod is fixedly connected with one surface of the teaching aid bottom plate, the inner wall of each hollow rod is provided with two guide grooves, and the inner wall of each guide groove is slidably connected with a guide block; according to the device, the decomposed stabilized voltage supply spare part is placed between the two U-shaped clamping plates, the U-shaped clamping plates are moved, and the stabilized voltage supply spare part is limited and fixed by the U-shaped clamping plates, so that fixation of the decomposed stabilized voltage supply spare part is conveniently realized, and the convenience in subsequent teaching is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching aids, in particular to a direct current regulated voltage power supply principle decomposition teaching aid. Background Art

[0002] DC stabilized power supply: also known as DC voltage regulator. Its supply voltage is mostly AC voltage. When the voltage of the AC supply voltage or the output load resistance changes, the direct output voltage of the voltage regulator can remain stable. The parameters of the voltage regulator include voltage stability, ripple factor and response speed. The former indicates the impact of changes in input voltage on the output voltage. The ripple factor indicates the size of the AC component in the output voltage under rated working conditions; the latter indicates the time required for the voltage to return to the normal value when the input voltage or load changes sharply. DC stabilized power supplies are divided into two types: continuous conduction type and switching type. The former uses a power frequency transformer to change the single-phase or three-phase AC voltage to an appropriate value, and then obtains an unstable DC power supply through rectification and filtering, and then obtains a stable voltage (or current) through a voltage stabilization circuit. This power supply circuit is simple, has small ripples, and small mutual interference, but is large in size, consumes a lot of materials, and has low efficiency (usually less than 40% to 60%). The latter adjusts the output voltage by changing the on-off time ratio of the adjustment element (or switch) to achieve voltage stabilization. The existing technology has the following problems when teaching the decomposed DC stabilized power supply:

[0003] 1. Since there are many parts and components of the decomposed DC regulated power supply, there is currently a lack of a teaching aid for fixing multiple parts and components of the DC regulated power supply, which makes the teaching of the decomposed DC regulated power supply inconvenient;

[0004] 2. At the same time, traditional teaching aids cannot easily adjust their height, and cannot match the teaching content with the students' perspective, which affects the students' observation effect and reduces the teaching quality. For this reason, we propose a DC regulated power supply principle decomposition teaching aid to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a teaching aid for decomposing the principle of a DC regulated power supply to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: a DC regulated power supply principle decomposition teaching aid, comprising a teaching aid base plate, one side of the teaching aid base plate is provided with a lifting mechanism, and the surface of the lifting mechanism is provided with a teaching mechanism;

[0007] The lifting mechanism includes two hollow rods, one end of the hollow rods is fixedly connected to a side of the teaching aid bottom plate, the inner walls of the two hollow rods are provided with two guide grooves, the inner walls of the guide grooves are slidably connected with guide blocks, a lifting rod is fixedly installed between two adjacent guide blocks, the outer walls of the lifting rods are in movably contact with the inner walls of the hollow rods, the outer walls of the two lifting rods are fixedly installed with toothed plates, the outer walls of the two hollow rods are fixedly installed with hollow sleeves, the inner walls of the two hollow sleeves are rotatably installed with rotating rods, the outer walls of the two rotating rods are fixedly installed with gears, and the gears are meshingly connected with the toothed plates.

[0008] As a preferred technical solution of the utility model, two stabilizing seats are fixedly installed on one side of the teaching aid base plate, and anti-slip pads are fixedly installed on one end of the two stabilizing seats away from the teaching aid base plate.

[0009] As a preferred technical solution of the utility model, through grooves are provided on the surfaces of the two hollow rods, and the tooth plates are in movable contact with the inner walls of the through grooves.

[0010] As a preferred technical solution of the utility model, a worm wheel is fixedly mounted on one end of the rotating rod, and a worm is provided on the outer wall of the hollow sleeve plate, and the worm is meshingly connected with the worm wheel.

[0011] As a preferred technical solution of the utility model, two fixing plates are fixedly installed on the outer wall of one of the hollow sleeve plates, and the worm and the fixing plates are rotatably connected.

[0012] As a preferred technical solution of the utility model, a first handle is fixedly mounted on one end of the worm away from the worm wheel, and a connecting rod is fixedly connected between the two rotating rods.

[0013] As a preferred technical solution of the utility model, the teaching mechanism includes a teaching display board, the end of the lifting rod away from the guide block is fixedly connected to the outer wall of the teaching display board, the inner wall of the teaching display board is evenly distributed with sliding grooves, the inner wall of the sliding groove is slidably connected to two sliders, a U-shaped clamping plate is fixedly installed on one side of the slider, and double-headed screws are evenly distributed and rotatably installed on both sides of the teaching display board, and the double-headed screws pass through the sliding groove and are threadedly rotatably connected to the slider.

[0014] As a preferred technical solution of the utility model, a U-shaped protective pad is fixedly installed on the inner wall of the U-shaped splint, and a second handle is fixedly installed on one end of the double-headed screw.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. By placing the disassembled voltage-stabilized power supply parts between two U-shaped clamps and moving the U-shaped clamps, the U-shaped clamps limit and fix the voltage-stabilized power supply parts, thereby conveniently fixing the disassembled voltage-stabilized power supply parts, thereby effectively improving the convenience of subsequent teaching;

[0017] 2. By driving the gear to rotate, the gear moves the toothed plate upward, the toothed plate moves the lifting rod upward, and the lifting rod moves the teaching display board upward, thereby conveniently realizing the height adjustment of the teaching display board, making it convenient for students to observe the teaching of voltage-stabilized power supply parts, thereby effectively improving the effect of students' observation and teaching and improving the teaching quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model.

[0019] Figure 2 This is another structural schematic diagram of the utility model.

[0020] Figure 3 This is a connection diagram of the lifting mechanism of the utility model.

[0021] Figure 4 For this utility model Figure 3 The enlarged schematic diagram of part A in FIG.

[0022] Figure 5 This is a schematic diagram of the cutaway structure of the hollow rod of the utility model.

[0023] Figure 6 It is a connection schematic diagram of the teaching mechanism of the utility model.

[0024] In the figure: 1. teaching aid base plate; 11. stable seat; 12. anti-skid pad; 2. lifting mechanism; 21. hollow rod; 22. through groove; 23. guide groove; 24. guide block; 25. lifting rod; 26. tooth plate; 27. hollow sleeve plate; 28. rotating rod; 29. ​​gear; 3. worm gear; 31. worm; 32. fixed plate; 33. first handle; 34. connecting rod; 4. teaching mechanism; 41. teaching display board; 42. slide groove; 43. slider; 44. U-shaped splint; 45. U-shaped protective pad; 46. double-headed screw; 47. second handle. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example: Figure 1-6 As shown, the utility model provides a decomposition teaching aid for teaching the principle of a DC regulated power supply, comprising a teaching aid base plate 1, a lifting mechanism 2 is provided on one side of the teaching aid base plate 1, a teaching mechanism 4 is provided on the surface of the lifting mechanism 2, the lifting mechanism 2 can conveniently realize the height adjustment of the teaching mechanism 4, and the teaching mechanism 4 can conveniently display the decomposed regulated power supply parts;

[0027] The lifting mechanism 2 includes two hollow rods 21, one end of the hollow rod 21 is fixedly connected to one side of the teaching aid base plate 1, the inner walls of the two hollow rods 21 are provided with two guide grooves 23, the inner walls of the guide grooves 23 are slidably connected with guide blocks 24, the guide blocks 24 can slide vertically along the inner walls of the guide grooves 23, and a lifting rod 25 is fixedly installed between two adjacent guide blocks 24, the guide blocks 24 can keep the lifting rod 25 moving in the vertical direction, and the outer wall of the lifting rod 25 and the hollow rod 21 are fixedly connected to the inner wall of the guide groove 23. The inner wall of the two lifting rods 25 is in movable contact, the outer walls of the two lifting rods 25 are fixedly installed with toothed plates 26, and the toothed plates 26 can move the lifting rods 25 in the vertical direction, the outer walls of the two hollow rods 21 are fixedly installed with hollow sleeve plates 27, the inner walls of the two hollow sleeve plates 27 are rotatably installed with rotating rods 28, the outer walls of the two rotating rods 28 are fixedly installed with gears 29, the rotating rods 28 can rotate the gears 29, the gears 29 and the toothed plates 26 are meshed and connected, and the gears 29 can drive the toothed plates 26 to move in the vertical direction.

[0028] Furthermore, two stabilizing seats 11 are fixedly installed on one side of the teaching aid base plate 1, and the stabilizing seats 11 can effectively improve the stability of the teaching aid base plate 1. Anti-skid pads 12 are fixedly installed on one end of the two stabilizing seats 11 away from the teaching aid base plate 1, and the anti-skid pads 12 can effectively improve the stability of the stabilizing seats 11.

[0029] Furthermore, the surfaces of the two hollow rods 21 are both provided with through grooves 22 , and the toothed plate 26 is in movable contact with the inner wall of the through groove 22 , and the toothed plate 26 can move in a vertical direction along the inner wall of the through groove 22 .

[0030] Furthermore, a worm wheel 3 is fixedly mounted at one end of a rotating rod 28, and the worm wheel 3 can rotate the rotating rod 28. A worm 31 is provided on the outer wall of a hollow sleeve plate 27, and the worm 31 is meshingly connected with the worm wheel 3. By rotating the worm 31, the worm 31 can drive the worm wheel 3 to rotate.

[0031] Furthermore, two fixing plates 32 are fixedly mounted on the outer wall of a hollow sleeve plate 27, and the worm 31 and the fixing plates 32 are rotatably connected.

[0032] Furthermore, a first handle 33 is fixedly installed at one end of the worm 31 away from the worm wheel 3. By turning the knob of the first handle 33, the first handle 33 can rotate the worm 31. A connecting rod 34 is fixedly connected between the two rotating rods 28. One rotating rod 28 can cause the other rotating rod 28 to rotate synchronously in the same direction through the connecting rod 34.

[0033] Furthermore, the teaching mechanism 4 includes a teaching display board 41, and one end of the lifting rod 25 away from the guide block 24 is fixedly connected to the outer wall of the teaching display board 41. The lifting rod 25 can move the teaching display board 41 in the vertical direction, thereby realizing the height adjustment of the teaching display board 41. The inner wall of the teaching display board 41 is evenly distributed with sliding grooves 42, and the inner wall of the sliding groove 42 is slidably connected with two sliders 43. The slider 43 can slide horizontally along the inner wall of the sliding groove 42. A U-shaped clamping plate 44 is fixedly installed on one side of the slider 43. The slider 43 can move the U-shaped clamping plate 44 in the horizontal direction. The U-shaped clamping plate 44 can clamp the disassembled voltage-stabilized power supply parts. Both sides of the teaching display board 41 are evenly distributed and rotatably installed with double-headed screws 46. The double-headed screws 46 penetrate the sliding groove 42 and the slider 43 and are threaded and rotatably connected. By rotating the double-headed screws 46, the double-headed screws 46 can drive the two sliders 43 to slide toward or away from each other.

[0034] Furthermore, a U-shaped protective pad 45 is fixedly installed on the inner wall of the U-shaped clamp 44, and the U-shaped protective pad 45 can prevent the surface of the clamped voltage-stabilizing power supply components from being worn. A second handle 47 is fixedly installed on one end of the double-headed screw 46, and the second handle 47 can rotate the double-headed screw 46 by turning the knob of the second handle 47.

[0035] Working principle: when it is necessary to teach the disassembled voltage-stabilized power supply parts, the teaching staff first places the device on the podium, and then places the disassembled voltage-stabilized power supply parts one by one between two adjacent U-shaped clamping plates 44, and respectively turns the knobs of the plurality of second handles 47, and the plurality of second handles 47 rotate the plurality of double-headed screws 46, and while the plurality of double-headed screws 46 rotate, the two adjacent sliders 43 slide toward each other along the inner wall of the corresponding slide groove 42, and at this time, the plurality of adjacent sliders 43 cause the two adjacent U-shaped clamping plates 44 and the two adjacent U-shaped protective pads 45 to move toward each other, until the plurality of U-shaped protective pads 45 contact the outer shell of the corresponding voltage-stabilized power supply parts and clamp the voltage-stabilized power supply parts, and then stop turning the knobs of the plurality of second handles 47, thereby conveniently realizing the fixation of the disassembled voltage-stabilized power supply parts, and thereby effectively improving the convenience of subsequent teaching;

[0036] When it is necessary to adjust the height of the teaching display board 41, the teaching staff turns the first handle 33 of the knob, and the first handle 33 rotates the worm 31, and the worm 31 drives the worm wheel 3 to rotate, and the worm wheel 3 rotates a corresponding rotating rod 28, and one rotating rod 28 rotates the other rotating rod 28 through the connecting rod 34. At this time, the two rotating rods 28 cause the two gears 29 to rotate synchronously, and the two gears 29 rotate while causing the two toothed plates 26 to move vertically upward, and the two toothed plates 26 cause the two lifting rods 25 to move vertically upward synchronously, and the two lifting rods 25 cause the teaching display board 41 to move vertically upward until the height of the teaching display board 41 after the vertical upward movement is adapted to the students' viewing angle, and then stops turning the first handle 33, thereby conveniently realizing the height adjustment of the teaching display board 41, making it convenient for students to observe the teaching of the voltage-stabilized power supply parts, thereby effectively improving the effect of students' observation and teaching and improving the teaching quality.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A teaching aid for decomposing and teaching the principle of a DC regulated power supply, comprising a teaching aid base plate (1), characterized in that: A lifting mechanism (2) is provided on one side of the teaching aid base plate (1), and a teaching mechanism (4) is provided on the surface of the lifting mechanism (2); The lifting mechanism (2) comprises two hollow rods (21), one end of the hollow rods (21) is fixedly connected to one side of the teaching aid bottom plate (1), the inner walls of the two hollow rods (21) are provided with two guide grooves (23), the inner walls of the guide grooves (23) are slidably connected with guide blocks (24), a lifting rod (25) is fixedly installed between two adjacent guide blocks (24), the outer walls of the lifting rods (25) are movably contacted with the inner walls of the hollow rods (21), the outer walls of the two lifting rods (25) are fixedly installed with toothed plates (26), the outer walls of the two hollow rods (21) are fixedly installed with hollow sleeves (27), the inner walls of the two hollow sleeves (27) are rotatably installed with rotating rods (28), the outer walls of the two rotating rods (28) are fixedly installed with gears (29), and the gears (29) and the toothed plates (26) are meshingly connected.

2. A DC regulated power supply principle decomposition teaching aid according to claim 1, characterized in that: Two stabilizing seats (11) are fixedly mounted on one side of the teaching aid base plate (1), and anti-slip pads (12) are fixedly mounted on one end of the two stabilizing seats (11) away from the teaching aid base plate (1).

3. A DC regulated power supply principle decomposition teaching aid according to claim 1, characterized in that: The surfaces of the two hollow rods (21) are both provided with through grooves (22), and the tooth plates (26) are in movable contact with the inner walls of the through grooves (22).

4. A DC regulated power supply principle decomposition teaching aid according to claim 1, characterized in that: A worm wheel (3) is fixedly mounted on one end of the rotating rod (28), and a worm (31) is provided on the outer wall of the hollow sleeve plate (27), and the worm (31) is meshingly connected with the worm wheel (3).

5. A DC regulated power supply principle decomposition teaching aid according to claim 4, characterized in that: Two fixing plates (32) are fixedly mounted on the outer wall of one of the hollow sleeve plates (27), and the worm (31) and the fixing plates (32) are rotatably connected.

6. A DC regulated power supply principle decomposition teaching aid according to claim 5, characterized in that: A first handle (33) is fixedly mounted on one end of the worm (31) away from the worm wheel (3), and a connecting rod (34) is fixedly connected between the two rotating rods (28).

7. A DC regulated power supply principle decomposition teaching aid according to claim 1, characterized in that: The teaching mechanism (4) comprises a teaching display board (41), one end of the lifting rod (25) away from the guide block (24) is fixedly connected to the outer wall of the teaching display board (41), the inner wall of the teaching display board (41) is evenly distributed with sliding grooves (42), the inner wall of the sliding groove (42) is slidably connected with two sliders (43), one side of the slider (43) is fixedly installed with a U-shaped clamping plate (44), and both sides of the teaching display board (41) are evenly distributed and rotatably installed with double-headed screws (46), and the double-headed screws (46) penetrate the sliding groove (42) and the slider (43) to be threaded and rotatably connected.

8. A DC regulated power supply principle decomposition teaching aid according to claim 7, characterized in that: A U-shaped protective pad (45) is fixedly mounted on the inner wall of the U-shaped clamping plate (44), and a second handle (47) is fixedly mounted on one end of the double-headed screw (46).

Images