CN210536498U

CN210536498U - Variable-frequency speed regulation device for teaching experiment

Info

Publication number: CN210536498U
Application number: CN201921960388.4U
Authority: CN
Inventors: 赵书红; 马青; 谈敏; 张锋
Original assignee: Jiangyin Polytechnic College
Current assignee: Jiangyin Polytechnic College
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-05-15
Anticipated expiration: 2029-11-13

Abstract

The utility model discloses a variable frequency speed regulating device for teaching experiments, which comprises an upper cover component and a lower cover component, wherein the lower cover component is movably connected with the upper cover component, when the variable frequency speed regulating device is not in use, the surface of a bottom plate is tightly attached to the bottom surface of the upper cover component, butt-joint piles and butt-joint grooves are fixed through bolts, the first fixation of the lower cover component and the upper cover component is realized, a screw column is screwed into the screw pile through a knob, the second fixation of the lower cover component and the upper cover component is realized, the connection stability between the lower cover component and the upper cover component is effectively ensured by a double-fixation mode, the upper cover component and a radiation-proof shell carry out double protection on a frequency converter, the device damage or safety accident caused by the mistaken touch of a frequency converter by students is prevented, the upper cover component is taken down from the lower cover component during use, the wiring between the frequency converter, the radiation isolation device has a good radiation isolation effect, and improves the safety of the teaching experiment process.

Description

Variable-frequency speed regulation device for teaching experiment

Technical Field

The utility model relates to a teaching experiment apparatus technical field specifically is a variable frequency speed device for teaching experiment.

Background

The frequency conversion speed regulator is equipment for converting a power frequency power supply (50Hz or 60Hz) into alternating current power supplies with various frequencies to realize variable speed operation of a motor, wherein a control circuit controls a main circuit, a rectifying circuit converts alternating current into direct current, a direct current intermediate circuit performs smooth filtering on the output of a rectifying circuit, an inverter circuit inverts the direct current into alternating current, the frequency conversion speed regulator is widely used in the field of education and teaching experiments, the existing frequency conversion speed regulators for education and teaching are directly placed on a laboratory table, no protection structure is added outside the frequency conversion speed regulators, students easily and mistakenly touch the frequency conversion speed regulators to cause equipment damage in the experimental process, the maintenance cost of the equipment is high, unnecessary safety accidents can be caused by the dropped frequency conversion speed regulators, the frequency conversion speed regulators can generate radiation during operation, and the number of the frequency conversion speed regulators in a teaching laboratory is large, the concentrated radiation is more, and the existing variable-frequency speed regulation device is not provided with a radiation-proof structure, so that the safety is not strong.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a variable frequency speed device for teaching experiment, possess and to prevent that the student mistake from bumping equipment damage or incident that the converter caused, the wiring process is safer, the effect that has good isolated radiation, improve the advantage of the security of teaching experimentation, the outside that can solve variable frequency speed device among the prior art does not add any protection architecture, in the experimentation, the student is very easy mistake and is bumped variable frequency speed device and lead to the equipment to damage, the equipment maintenance cost is great, and the variable frequency speed device that drops still can cause the unnecessary incident, variable frequency speed device can produce the radiation when moving, because variable frequency speed device is more in the teaching laboratory, the radiation of assembling is more, and current variable frequency speed device does not set up the radiation protection structure, the not strong problem of security.

In order to achieve the above object, the utility model provides a following technical scheme: a variable frequency speed regulation device for teaching experiments comprises an upper cover assembly and a lower cover assembly, wherein the lower cover assembly is movably connected with the upper cover assembly, the upper cover assembly comprises an upper cover body, an object placing groove, a ventilating groove, knobs, spiral columns, docking piles and guide columns, the object placing groove is formed in the top surface of the upper cover body, the ventilating groove is formed in the side wall of the upper cover body, the knobs are arranged at four corner bending positions of the top surface of the upper cover body, each knob is fixedly connected with the top of each spiral column, the bottoms of the spiral columns stretch into the upper cover body, the inner wall of the top surface of the upper cover body is provided with two guide columns, the inner walls of two sides of the upper cover body are symmetrically provided with two docking piles, and the docking piles are;

the lower cover component comprises a bottom plate, a strip-shaped slide rail, a threaded pile, a top shaft, guide sleeves, a frequency converter, a sliding chute, a radiation-proof shell, a wiring pile and a butt-joint groove, wherein the butt-joint groove is clamped with the butt-joint pile, the butt-joint groove is arranged on the bottom plate, the threaded pile is fixedly arranged at the four corners of the bottom plate, the side surface of the threaded pile is fixedly provided with the top shaft, the top surface of the top shaft is tightly attached to the inner wall of the upper cover body, the bottom surface of the top shaft is fixedly connected with the bottom plate, the bottom plate is fixedly provided with two guide sleeves which are respectively sleeved with the two guide columns, the radiation-proof shell is arranged between the two guide sleeves, the frequency converter is fixedly arranged in the radiation-proof shell, the wiring end of the frequency converter is electrically connected with the wiring pile through a wire, the wiring pile is provided with a plurality of wiring, the strip-shaped slide rail is fixed on the bottom plate.

Preferably, the surface of the bottom plate is tightly attached to the bottom surface of the upper cover body.

Preferably, the screw pile is movably connected with the screw column through internal threads.

Preferably, the distance between two adjacent groups of the top shafts is greater than the length of the radiation-proof shell.

Preferably, the top surface of the radiation protection shell is in contact with the bottom surface of the storage groove.

Preferably, the frequency converter adopts a Mitsubishi FR-S520(S)/S540 series motor variable frequency speed regulator.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. this a variable frequency speed control device for teaching experiment adopts dual fixed mode effectively to guarantee the stability of being connected between lower cover subassembly and the upper cover subassembly, and the upper cover body carries out duplicate protection with the radiation protection shell to the converter, prevents that the student from missing the equipment damage or the incident that the converter caused.

2. This a variable frequency speed adjusting device for teaching experiment realizes converter and external wiring through the wiring stake, and the student is direct not with the converter contact, and the wiring process is safer, and the inner wall of radiation protection shell is scribbled chromium, has the effect of good isolated radiation, improves the security of teaching experiment process.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the upper cover assembly of the present invention;

FIG. 3 is a schematic view of the structure of the lower cover assembly of the present invention;

fig. 4 is a schematic view of the installation position of the frequency converter of the present invention.

In the figure: 1. an upper cover assembly; 11. an upper cover body; 12. a storage groove; 13. a ventilation slot; 14. a knob; 15. a helical column; 16. butting piles; 17. a guide post; 2. a lower cover assembly; 21. a base plate; 22. a strip-shaped slide rail; 23. a screw pile; 24. a top shaft; 25. a guide sleeve; 26. a frequency converter; 27. a chute; 28. a radiation-proof housing; 29. a wiring pile; 210. and (4) butting the grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a variable frequency speed regulation device for teaching experiments includes an upper cover assembly 1 and a lower cover assembly 2, wherein the lower cover assembly 2 is movably connected with the upper cover assembly 1.

Referring to fig. 2, the upper cover assembly 1 includes an upper cover 11, an object placing groove 12, a ventilation groove 13, a knob 14, a spiral column 15, butt-jointed piles 16 and guide columns 17, the object placing groove 12 is disposed on the top surface of the upper cover 11, the ventilation groove 13 is disposed on the side wall of the upper cover 11, the knob 14 is disposed at the four-corner bending position of the top surface of the upper cover 11, each knob 14 is fixedly connected with the top of the spiral column 15, the bottom of the spiral column 15 extends into the upper cover 11, two guide columns 17 are disposed on the inner wall of the top surface of the upper cover 11, two butt-jointed piles 16 are symmetrically disposed on the inner walls of two sides of the upper cover 11, and the butt-jointed piles 16 are fixedly connected with the lower cover assembly 2 through bolts.

Referring to fig. 3-4, the lower cover assembly 2 includes a bottom plate 21, a strip-shaped slide rail 22, a threaded pile 23, a top shaft 24, guide sleeves 25, a frequency converter 26, a sliding groove 27, a radiation-proof housing 28, a connection pile 29 and a butt-joint groove 210, the butt-joint groove 210 is engaged with the butt-joint pile 16, the butt-joint groove 210 is disposed on the bottom plate 21, the threaded piles 23 are fixedly disposed at four corners of the bottom plate 21, the threaded piles 23 are movably connected with the spiral columns 15 through internal threads, the top shafts 24 are fixedly disposed at the sides of the threaded piles 23, the top surfaces of the top shafts 24 are tightly attached to the inner wall of the upper cover 11, the distance between two adjacent sets of top shafts 24 is greater than the length of the radiation-proof housing 28, the bottom surface of the top shafts 24 is fixedly connected with the bottom plate 21, two guide sleeves 25 are fixedly disposed on the bottom plate 21, the two guide sleeves 25 are respectively sleeved with the two guide columns 17, the radiation-, the frequency converter 26 adopts a Mitsubishi FR-S520(S)/S540 series motor variable frequency speed regulator, the wiring end of the frequency converter 26 is electrically connected with the wiring piles 29 through wires, the wiring piles 29 are arranged in a plurality, the wiring piles 29 are all fixed on the outer wall of the radiation-proof shell 28, the top surface of the radiation-proof shell 28 is in contact with the bottom surface of the storage groove 12, the bottom surface of the radiation-proof shell 28 is provided with a sliding groove 27, the sliding groove 27 slides on the strip-shaped sliding rail 22, the strip-shaped sliding rail 22 is fixed on the bottom plate 21, and the surface of the bottom plate 21 is tightly attached to the bottom.

The working principle is as follows: when the radiation-proof shell is not used, the surface of the bottom plate 21 is tightly attached to the bottom surface of the upper cover body 11, the two guide sleeves 25 are respectively sleeved with the two guide posts 17, the top surface of the radiation-proof shell 28 is contacted with the bottom surface of the object placing groove 12, the object placing groove 12 plays a role in limiting the position of the radiation-proof shell 28, the docking pile 16 is clamped in the docking groove 210, the docking pile 16 is fixed with the docking groove 210 through bolts, the lower cover assembly 2 and the upper cover assembly 1 are fixed in a first-time mode, the spiral post 15 is screwed into the spiral post 23 through the knob 14, the lower cover assembly 2 and the upper cover assembly 1 are fixed in a second-time mode, when the radiation-proof shell is used, the spiral post 15 is screwed out of the spiral post 23 through the knob 14, the bolts between the docking post 16 and the docking groove 210 are dismounted, the upper cover assembly 1 is taken down from the lower cover assembly 2, the connection of the frequency converter 26 with the outside is realized, has good radiation-shielding effect.

In summary, the following steps: the variable frequency speed regulation device for the teaching experiment has the advantages that when the variable frequency speed regulation device is not used, the surface of the bottom plate 21 is tightly attached to the bottom surface of the upper cover body 11, the two guide sleeves 25 are respectively sleeved with the two guide posts 17, the top surface of the radiation-proof shell 28 is contacted with the bottom surface of the storage groove 12, the storage groove 12 plays a role in limiting the position of the radiation-proof shell 28, the docking piles 16 are clamped in the docking grooves 210, the docking piles 16 are fixed with the docking grooves 210 through bolts, the lower cover assembly 2 and the upper cover assembly 1 are fixed in a first-weight mode, the spiral posts 15 are screwed into the threaded piles 23 through the knobs 14, the lower cover assembly 2 and the upper cover assembly 1 are fixed in a second-weight mode, the connection stability between the lower cover assembly 2 and the upper cover assembly 1 is effectively ensured in a double-weight mode, the upper cover body 11 and the radiation-proof shell 28 carry out double protection on the frequency converter 26, during the use, the screw column 15 is screwed out from the threaded pile 23 through the knob 14, then the butt-joint pile 16 and the bolt between the butt-joint grooves 210 are dismounted, the upper cover assembly 1 is taken down from the lower cover assembly 2, the connection between the frequency converter 26 and the outside is realized through the wiring pile 29, the inner wall of the radiation-proof shell 28 is coated with chromium, the radiation-proof shell has a good radiation-insulating effect, and the safety of the teaching experiment process is improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a variable frequency speed control device for teaching experiment, includes upper cover subassembly (1) and lower cover subassembly (2), lower cover subassembly (2) and upper cover subassembly (1) swing joint, its characterized in that: the upper cover assembly (1) comprises an upper cover body (11), an article placing groove (12), a ventilating groove (13), knobs (14), spiral columns (15), butt-joint piles (16) and guide columns (17), wherein the article placing groove (12) is arranged on the top surface of the upper cover body (11), the ventilating groove (13) is formed in the side wall of the upper cover body (11), the knobs (14) are arranged at four corners of the top surface of the upper cover body (11), each knob (14) is fixedly connected with the top of each spiral column (15), the bottom of each spiral column (15) extends into the upper cover body (11), the two guide columns (17) are arranged on the inner wall of the top surface of the upper cover body (11), the two butt-joint piles (16) are symmetrically arranged on the inner walls of the two sides of the upper cover body (11), and the butt-joint piles (16) are fixedly connected with the lower cover assembly (2;

the lower cover component (2) comprises a bottom plate (21), a strip-shaped slide rail (22), threaded piles (23), top shafts (24), guide sleeves (25), a frequency converter (26), a sliding groove (27), a radiation-proof shell (28), wiring piles (29) and butt-joint grooves (210), wherein the butt-joint grooves (210) are clamped with the butt-joint piles (16), the butt-joint grooves (210) are arranged on the bottom plate (21), the threaded piles (23) are fixedly arranged at four corner bending positions of the bottom plate (21), the top shafts (24) are fixedly arranged on the side surfaces of the threaded piles (23), the top surfaces of the top shafts (24) are tightly attached to the inner wall of the upper cover body (11), the bottom surfaces of the top shafts (24) are fixedly connected with the bottom plate (21), two guide sleeves (25) are fixedly arranged on the bottom plate (21), the two guide sleeves (25) are respectively sleeved with the two guide columns (17), the radiation-proof shell (28) is arranged between the, the inside fixed mounting converter (26) of protecting against radiation shell (28), the wiring end of converter (26) passes through wire and wiring stake (29) electric connection, and wiring stake (29) set up a plurality ofly, and a plurality of wiring stakes (29) are all fixed on the outer wall of protecting against radiation shell (28), and the bottom surface of protecting against radiation shell (28) is provided with spout (27), and spout (27) slide on bar slide rail (22), and bar slide rail (22) are fixed on bottom plate (21).

2. The variable-frequency speed regulation device for teaching experiments as claimed in claim 1, characterized in that: the surface of the bottom plate (21) is tightly attached to the bottom surface of the upper cover body (11).

3. The variable-frequency speed regulation device for teaching experiments as claimed in claim 1, characterized in that: the threaded pile (23) is movably connected with the spiral column (15) through internal threads.

4. The variable-frequency speed regulation device for teaching experiments as claimed in claim 1, characterized in that: the distance between two adjacent groups of the top shafts (24) is larger than the length of the radiation-proof shell (28).

5. The variable-frequency speed regulation device for teaching experiments as claimed in claim 1, characterized in that: the top surface of the radiation-proof shell (28) is contacted with the bottom surface of the storage groove (12).

6. The variable-frequency speed regulation device for teaching experiments as claimed in claim 1, characterized in that: the frequency converter (26) adopts a Mitsubishi FR-S520(S)/S540 series motor variable frequency speed regulator.