CN113570951B

CN113570951B - Multifunctional mechanics experimental device

Info

Publication number: CN113570951B
Application number: CN202110696744.1A
Authority: CN
Inventors: 赵鹏; 张龙威; 季康龙; 赵晖; 涂昶昶
Original assignee: Lanzhou University
Current assignee: Lanzhou University
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2023-08-08
Anticipated expiration: 2041-06-23
Also published as: CN113570951A

Abstract

The invention discloses a multifunctional mechanical experiment device, and particularly relates to the technical field of mechanical experiment equipment. The utility model provides a multifunctional mechanics experimental device, the on-line screen storage device comprises a base, operation controller, a motor, the rotary drum, rocking arm and steel ball, operation controller and motor all set up on the base, be connected with driving belt between motor and the rotary drum, threaded connection has first pivot on the rotary drum, first pivot and rocking arm threaded connection are equipped with the scale mark on the rocking arm, be provided with the slot on the rocking arm, be equipped with the friction plate in the slot, the both sides of rocking arm are all rotated and are connected with the bracing piece, be provided with the pulling force measurement module on the rocking arm, be provided with second pivot and pulling force measurement wheel in the pulling force measurement module, cladding pull wire in the second pivot, the pull wire is equipped with the connector, the cladding has the gear in the second pivot, first pivot is embedded to be equipped with the rack. The technical scheme of the invention solves the problems of single function and space occupation of the existing experimental instrument and equipment, and can be used for measuring and demonstrating centripetal force and friction force.

Description

Multifunctional mechanics experimental device

Technical Field

The invention relates to the technical field of mechanical experiment equipment, in particular to a multifunctional mechanical experiment device.

Background

In the physical teaching process, various mechanical demonstration experiment devices, such as a centripetal force demonstration instrument, a gravity acceleration measuring device, a friction force measuring device, a tension measuring device, an object weighing device and the like, are needed. Therefore, the laboratory needs to be equipped with various instruments and equipment, which not only occupies space, but also has high cost for purchasing multiple sets of equipment. At present, a mechanical experiment device which integrates a plurality of experimental devices and has simple structure, convenient operation and low cost does not exist.

Disclosure of Invention

The invention aims to provide a multifunctional mechanical experiment device, which solves the problems that the existing experimental instrument and equipment are single in function and occupy space.

In order to achieve the above purpose, the technical scheme of the invention is as follows: the multifunctional mechanical experiment device comprises a base, an operation controller, a motor, a rotary drum, a rotating arm and steel balls, wherein the operation controller and the motor are arranged on the base, a transmission belt is connected between the motor and the rotary drum, the rotary drum is rotationally connected to the base, a first rotating shaft is connected to the rotary drum in a threaded manner, the first rotating shaft is arranged on the rotating arm and the base in a penetrating manner, the first rotating shaft is in threaded connection with the rotating arm, a scale mark is arranged on the rotating arm, a slot is arranged on the rotating arm, a friction plate is arranged in the slot, support rods are rotationally connected to two sides of the rotating arm, the length of the support rods is equal to the interval between the rotating arm and the base, a tension measurement module is arranged on the rotating arm, and a motor speed adjusting button and a motor start-stop button are arranged on the operation controller; the tension measuring device is characterized in that a second rotating shaft and a tension measuring wheel are arranged in the tension measuring module, a traction wire is coated on the second rotating shaft, the free end of the traction wire bypasses the tension measuring wheel, a connector located outside the tension measuring module is arranged at the free end of the traction wire, the connector is detachably connected with the steel ball, a gear is coated on the second rotating shaft, a rack meshed with the gear is embedded in the first rotating shaft, and the outermost side of the rack does not exceed the outer surface of the first rotating shaft.

Compared with the prior art, the beneficial effect of this scheme:

the scheme has simple structure and convenient operation, can finish measurement and demonstration experiments of centripetal force and friction force, and greatly reduces the space occupied by the experimental instrument and the purchase cost thereof.

Drawings

FIG. 1 is a schematic structural diagram of a multifunctional mechanical experiment device of the invention;

FIG. 2 is a cross-sectional view of a tension measurement module according to the present invention;

fig. 3 is a side view of the swivel arm of the present invention.

Detailed Description

The invention is described in further detail below by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a base 1, an operation controller 2, a motor 3, a rotary drum 4, a rotary arm 5, a steel ball 6, a transmission belt 7, a first rotating shaft 8, a friction plate 9, a supporting rod 10, a clamping hook 11, a second rotating shaft 12, a tension measuring wheel 13, a shell 14, a traction wire 15, a connector 16, a steel ball 17 and a gear 18.

Examples

As shown in fig. 1 to 3: the multifunctional mechanical experiment device comprises a base 1, an operation controller 2, a motor 3, a rotary drum 4, a rotary arm 5 and a steel ball 176, wherein the base 1 is composed of a supporting plate and supporting legs arranged at four corners of the bottom of the supporting plate. The operation controller 2 is electrically connected with a display screen, a connecting rod is connected between the operation controller 2 and the base 1, and the connecting rod is obliquely arranged on the base 1. The motor 3 is connected on the base 1 through bolts, the output shaft of the motor 3 is vertically upwards arranged, and a transmission belt 7 is connected between the output shaft of the motor 3 and the rotary drum 4. The rotary drum 4 is hollow inside and is designed to be opened up and down, the rotary drum 4 is rotationally connected to the base 1, the first rotating shaft 8 is connected to the internal thread of the rotary drum 4, the first rotating shaft 8 is arranged on the rotating arm 5 and the base 1 in a penetrating mode, and the first rotating shaft 8 is connected with the rotating arm 5 in a threaded mode. The upper surface of the rotating arm 5 is provided with scale marks, a slot is arranged in the rotating arm 5, and a friction plate 9 is clamped in the slot. The left and right sides of rocking arm 5 all articulates there is bracing piece 10 that rubber was made, and the length of every bracing piece 10 all equals the interval between rocking arm 5 and the base 1, and two bracing pieces 10 set up respectively in the front and back side of first pivot 8, and the bottom of rocking arm 5 still symmetry is equipped with the pothook 11 of the "L" shape that supplies bracing piece 10 block, still is equipped with the draw-in groove that supplies bracing piece 10 block on the base 1. The rotating arm 5 is provided with a tension measuring module, and the operation controller 2 is provided with a speed adjusting button of the motor 3 and a start-stop button of the motor 3; the tension measuring module is internally provided with a second rotating shaft 12 and a tension measuring wheel 13, the second rotating shaft 12 is externally provided with a shell 14 with a hollow inside, the second rotating shaft 12 is rotationally connected with the shell 14, the second rotating shaft 12 is coated with a traction wire 15, the free end of the traction wire 15 bypasses the tension measuring wheel 13, the free end of the traction wire 15 is provided with a connector 16 positioned outside the tension measuring module, the connector 16 is in threaded connection with a steel ball 176, the second rotating shaft 12 is coated with a gear 18, one side, close to the second rotating shaft 12, of the first rotating shaft 8 is provided with a groove, a rack meshed with the gear 18 is embedded in the groove, and the outermost side of the rack does not exceed the groove.

The working process of the scheme comprises the following steps:

when centripetal force demonstration is carried out, the two support rods 10 are clamped and fixed in the clamping grooves, the motor 3 is started by the control operator, the first rotating shaft 8 moves up and down in a reciprocating mode under the combined action of the driving belt 7, the rotating drum 4 and the rotating arm 5, the second rotating shaft 12 can be driven to rotate by the aid of racks and gears 18 in the moving process of the first rotating shaft 8, and therefore the length of the traction wire 15 is adjusted. Then the supporting rod 10 is moved out of the clamping groove and fixed on the clamping hook 11, and the motor 3 is started again, at the moment, the motor 3 drives the rotating arm 5 to rotate by utilizing the transmission belt 7, the rotating drum 4 and the first rotating shaft 8, so that the numerical value measured on the tension measuring wheel 13 is displayed on the display screen.

When the friction force is measured, the friction plate 9 is inserted into the slot, the steel ball 176 on the connector 16 is replaced by a friction block and is placed on the friction plate 9, then the supporting rod 10 is clamped in the clamping groove and the motor 3 is started, at the moment, the first rotating shaft 8 reciprocates up and down under the combined action of the driving belt 7, the rotating drum 4 and the rotating arm 5, in the moving process of the first rotating shaft 8, the rack and the gear 18 can be utilized to drive the second rotating shaft 12 to rotate, the traction wire 15 and the connector 16 are utilized to drive the friction block to move after the second rotating shaft 12 rotates, and therefore the numerical value measured on the tension measuring wheel 13 is displayed on the display screen.

The foregoing is merely exemplary of the present invention and the details of construction and/or the general knowledge of the structures and/or characteristics of the present invention as it is known in the art will not be described in any detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. Multifunctional mechanics experimental apparatus, its characterized in that: the automatic lifting device comprises a base, an operation controller, a motor, a rotary drum, a rotary arm and steel balls, wherein the operation controller and the motor are arranged on the base, a transmission belt is connected between the motor and the rotary drum, the rotary drum is rotationally connected on the base, a first rotating shaft is connected to the rotary drum in a threaded manner, the first rotating shaft is arranged on the rotary arm and the base in a penetrating manner, the first rotating shaft is in threaded connection with the rotary arm, scale marks are arranged on the rotary arm, a slot is arranged on the rotary arm, a friction plate is arranged in the slot, support rods are rotationally connected to two sides of the rotary arm, the length of the support rods is equal to the interval between the rotary arm and the base, L-shaped hooks for clamping the support rods are symmetrically arranged at the bottom of the rotary arm, a clamping groove for clamping the support rods is further formed in the base, a tension measuring module is arranged on the rotary arm, and a motor speed adjusting button and a motor start-stop button are arranged on the operation controller. The tension measuring device comprises a tension measuring module, a first rotating shaft, a tension measuring wheel, a second rotating shaft, a traction wire, a connecting head, a gear, a first rotating shaft and a second rotating shaft, wherein the tension measuring module is internally provided with the second rotating shaft and the tension measuring wheel;

when centripetal force demonstration is carried out, the support rod is clamped and fixed in the clamping groove, then the motor is started by the control operator, at the moment, the first rotating shaft reciprocates up and down under the combined action of the transmission belt, the rotating drum and the rotating arm, and in the moving process of the first rotating shaft, the rack and the gear are used for driving the second rotating shaft to rotate, so that the length of the traction wire is adjusted; then the supporting rod is moved out of the clamping groove and fixed on the clamping hook, and the motor is started again, at the moment, the motor drives the rotating arm to rotate by utilizing the transmission belt, the rotating drum and the first rotating shaft, and the numerical value measured on the tension measuring wheel is displayed on the display screen;

when the friction force is measured, the friction plate is inserted into the slot, the steel ball on the connecting head is replaced by the friction block and is placed on the friction plate, then the supporting rod is clamped in the clamping groove and the motor is started, at the moment, the first rotating shaft reciprocates up and down under the combined action of the driving belt, the rotating drum and the rotating arm, the rack and the gear are utilized to drive the second rotating shaft to rotate in the moving process of the first rotating shaft, the traction wire and the connecting head are utilized to drive the friction block to move after the second rotating shaft rotates, and therefore the numerical value measured on the tension measuring wheel is displayed on the display screen.