CN104881067B - Shooting device capable of controlling the shooting angle and speed of irregular sand grains - Google Patents

Abstract

The invention provides a launching device capable of controlling the projection angle and speed of irregular sand grains, which includes a base, a bracket, a motor, a control cantilever, a brake lever, a brake groove, a turntable, a dial, a launch groove, and a rotating shaft fixed at the center of the turntable. The rotating shaft is supported by the bracket, and the rotating shaft is driven by the motor to rotate. There is an equal-diameter braking groove on the turntable, and the central angle of the braking groove is 90 degrees; On the side, the brake lever is connected between the two control arms, and the brake lever passes through the brake groove vertically; there is a space for containing sand in the turntable, and a launch port is provided at the edge of the turntable, and a launch slot is provided at the launch port; The launching device that can control the projecting angle and velocity of irregular sand grains involved in the invention has a simple structure and can control the angle and speed of sand grains.

Description

A launching device that can control the angle and speed of irregular sand projection

technical field

The invention relates to a launching device capable of controlling the projection angle and velocity of irregular sand grains, which belongs to the technical field of machinery.

Background technique

In the existing experiments on projecting sand particles, artificial projecting sand particles are generally used. Due to the different projected strength, angle and initial speed of artificial projected sand particles, the consequence of projecting is that the speed and angle of each projected sand particle are different. In this way, the results of the experiment are quite different and the error is large, and the reliability of the final experimental result is not high. However, in the prior art, there is not a special sand projecting device used for experiments. Therefore, there is an urgent need for a launching device that can control the angle and speed of sand projecting.

Contents of the invention

The present invention provides a launching device capable of controlling the projection angle and velocity of irregular sand grains, which can solve the above-mentioned problems.

In order to solve the above technical problems, the present invention provides the following technical solutions: a launching device capable of controlling the projection angle and velocity of irregular sand particles, including a base, a bracket, a motor, a control cantilever, a brake lever, a brake groove, a turntable, and a scale Disc, launch slot, rotating shaft is fixed at the center of the rotating disc, supported by a bracket, driven by a motor to rotate, there is an equal-diameter arc-shaped braking groove on the rotating disc, and the central angle of the braking groove is 90 degrees; the symmetrically arranged control cantilever socket On the rotating shaft, the control swing arms are arranged on both sides of the bracket, and the brake lever is connected between the two control swing arms, and the brake lever passes through the brake groove vertically; there is a space for containing sand in the turntable, and there is a There is a launch slot at the launch port; turn counterclockwise, the diameter of the launch slot is slightly larger than the maximum diameter of sand grains, the axis of the launch slot is located in the middle plane of the turntable and is tangent to the circle where the center point of the bottom of the launch slot is, so when the disc When braking suddenly, the sand particles can move out according to the direction of the launch slot; the contact surface of the brake lever and the right plane of the brake slot is located in the symmetrical plane of the brake lever perpendicular to the turntable; the sand can be controlled by setting the angle of the control cantilever. The angle of emission of grains; set the switch, when the brake lever is inserted into the other side, the control lever will press the motor switch, and the motor will be powered off to ensure the braking effect and protect the motor; when the brake lever is lifted, manually press the switch The motor starts up again.

Further, the launch slot has a notch on the side top.

Further, the support is a binaural support.

Further, a dial is set on the support with the center of the rotating shaft as the center.

Further, a double-shaft gear meshing reduction transmission device is provided between the motor and the rotating shaft.

The emission device capable of controlling the projecting angle and velocity of irregular sand grains involved in the present invention has a simple structure and can control the angle and speed of sand grains.

Description of drawings

Fig. 1 is a schematic structural diagram of a launching device capable of controlling the projection angle and velocity of irregular sand grains according to the present invention;

Fig. 2 is the plan view of Fig. 1 of the present invention;

Fig. 3 is the side view of Fig. 2 of the present invention;

Fig. 4 is a cross-sectional view of the launch slot of the present invention.

detailed description

As shown in Figure 1, a launching device capable of controlling the projection angle and speed of irregular sand grains includes a base 1, a bracket 2, a motor, a control cantilever 5, a brake lever 6, a brake groove 7, a turntable 3, and a dial , launch groove 4, rotating disk 3 centers are fixed rotating shaft, and rotating shaft is supported by support 2, and rotating shaft is driven to rotate by motor, is provided with equal-diameter braking groove 7 on rotating disk 3, and the central angle of braking groove 7 is 90 degrees; The control of symmetrical setting The cantilever 5 is sleeved on the rotating shaft, the control swing arms are arranged on both sides of the bracket, and the brake lever 6 is connected between the two control swing arms, and the brake lever 6 passes through the brake groove vertically; the turntable 3 has a space for accommodating sand particles. The edge of the rotating disk 3 is provided with a launching port 41, and the launching port 41 is provided with a launching slot 4; when rotating counterclockwise, the diameter of the launching slot 4 is slightly larger than the maximum diameter of sand grains, and the axis of the launching slot 4 is located in the middle plane of the rotating disc and is in line with the launching slot. The circle where the center point of the groove bottom is located is tangent to the circle, so when the disc brakes suddenly, the sand grains can move out in the direction of the launching groove; In the plane of symmetry; setting the angle of the control cantilever 5 can control the emission angle of sand grains; setting the switch, when the brake lever 6 is inserted into the other side, the control lever 6 will press the motor switch, and the motor will be powered off to ensure the braking effect. Effect and protect the motor; when the brake lever is lifted, manually press the switch motor to start again.

The launch slot 4 has a gap at the top of the side.

The support 2 is an amphibious support.

A scale is set on the support 2 with the center of the rotating shaft as the center.

A deceleration transmission device 8 engaged with two-shaft gears is arranged between the motor and the rotating shaft.

1. The angular velocity of the turntable is controlled by the motor, and the speed of the launching trough can be calculated according to the distance between the axis of the launching trough and the rotating shaft, and then the speed of the sand grains at the bottom of the launching trough can be obtained.

2. The turntable rotates counterclockwise as shown in Figure 1. The diameter of the launch slot is slightly larger than the maximum diameter of sand grains. The axis of the launch slot is located in the middle plane of the turntable and is tangent to the circle where the center point of the bottom of the launch slot is located. Therefore, when the disc stops suddenly Sand grains can move out according to the direction of the launch slot. The surface of the brake lever in contact with the plane on the right side of the brake groove is located in the symmetrical plane of the brake lever perpendicular to the turntable. Set the angle of the control cantilever to control the exit angle of sand grains.

3. Set the switch, when the brake lever is inserted into the other side, the control lever presses the motor switch, and the motor is powered off to ensure the braking effect and protect the motor. After lifting the brake lever, manually press the switch motor to start again.

4. Since both the brake lever and the turntable are brittle materials, the collision between the brake lever and the turntable may cause the turntable to rebound in the opposite direction when the brake lever is pressed down, and may also damage the brake lever. Therefore, at the end of the brake groove, it is necessary to install materials such as rubber pads.

5. The angle between the outlet of the launching slot and the end of the braking slot of the device is fixed.

How to use: 1. Calculate the control cantilever angle and motor speed that need to be set to make the sand particles reach a specific angle and speed; 2. Put the instrument in a suitable position to ensure stability; 3. Turn the control cantilever to make the scale pointer on the control cantilever Point to a specific angle on the dial, fix the control cantilever, and pull out the control lever; 4. Rotate the turntable until the opening of the launch slot is upward, and put sand; 5. Power on, start the motor, and set a specific speed; 6. Wait for the speed to stabilize Finally, insert the brake lever at an appropriate time, and power off after the machine is stable; 7. Organize the instrument.

The specific implementation methods described in the present invention do not constitute a limitation to the scope of the application. Any modifications, equivalent replacements and improvements that can be made by professionals in the field within the spirit and principles of the present invention should be included in this application. within the scope of protection of the invention.

Claims (5)

1. a kind of discharger that can control irregular grains of sand crevice projection angle and speed it is characterised in that include base, support, Motor, control cantilever, brake bar, breaker slot, rotating disk, graduated disc, transmitting groove, center of turntable fixed rotating shaft, rotating shaft is propped up by support Support, rotating shaft is driven by motor and rotates, and rotating disk has isometrical arcuate brake groove, and the central angle of breaker slot is 90 degree；It is symmetrical arranged Control cantilever be socketed in rotating shaft, control spiral arm to be arranged on the both sides of support, two control and connect brake bar, brake bar between spiral arms Pass perpendicularly through breaker slot；There is in rotating disk the space accommodating the grains of sand, transmitting groove center line is coaxial with rotating disk tangent line；Turn counterclockwise Dynamic, transmitting groove diameter is slightly larger than grains of sand maximum gauge, transmitting fluted shaft line be located in the middle face of rotating disk and with launch trench bottom center Circle that point is located is tangent, and therefore when disk is braked suddenly, the grains of sand can move away by the direction of transmitting groove；Brake bar and breaker slot The face of right side plan contact is located at brake bar in the plane of symmetry of rotating disk；Set and control the angle of cantilever just can control sand The shooting angle of grain；Setting switch, during brake bar insertion opposite side, control bar can press motor switch, and motor power-off is it is ensured that make Dynamic effect and protection motor；After lifting brake bar, it is manually pressed by switching motor and is again started up.

2. a kind of discharger that can control irregular grains of sand crevice projection angle and speed according to claim 1, its feature It is, described transmitting groove has gap in side roof part.

3. a kind of discharger that can control irregular grains of sand crevice projection angle and speed according to claim 1, its feature It is, described support is ears bearing.

4. a kind of discharger that can control irregular grains of sand crevice projection angle and speed according to claim 1 or 3, it is special Levy and be, described support is arranged centered on the rotating shaft center of circle graduated disc.

5. a kind of discharger that can control irregular grains of sand crevice projection angle and speed according to claim 1, its feature It is, between described motor and rotating shaft, be provided with the speed reduction gearing that twin shaft gear engages.