CN219529746U - Vertical reciprocating motion resistance compensation device - Google Patents

Abstract

The utility model relates to resistance compensation of a crank mechanism, in particular to a resistance compensation device for vertical reciprocating motion, which comprises a gear motor, wherein an output shaft of the gear motor is connected with one end of a crank, the other end of the crank is connected with a connecting rod, the crank rotates along with an output shaft of the motor, and the connecting rod reciprocates in the vertical direction. The vertical reciprocating motion resistance compensation device has small volume, is directly arranged at the output shaft end of the driving mechanism, and acts on the driving shaft directly. The structure is simple, the resistance direction and the resistance are adjustable, the effect of controlling the resistance moment is achieved by controlling the gas flow, and the reciprocating uniform motion of the motion mechanism is ensured.

Description

Vertical reciprocating motion resistance compensation device

Technical Field

The utility model relates to resistance compensation of a crank mechanism, in particular to a resistance compensation device for vertical reciprocating motion.

Background

In the field of special equipment inspection, such as inspection of gas cylinders and air respirators, a reciprocating mechanism is required to drive a corrugated pipe to simulate an artificial lung to perform breathing gas.

The reciprocating mechanism comprises a gear motor 1, a crank 3 and a connecting rod 4, wherein the crank rotates along with an output shaft of the motor, and the gear motor 1 rotates positively and negatively to drive the connecting rod to reciprocate in the vertical direction. When the connecting rod 4 of the motion mechanism moves downwards, the generated moment exceeds the maximum braking moment of the motor due to the gravity of the equipment and the downward driving force generated by the rotation of the motor, the dive phenomenon is easy to occur, the rotation speed is instantaneously increased, and the rotation speed acquisition and control device is out of position (lost position) so as not to accurately control the driving mechanism.

The device mainly solves the problem of diving of the speed reducing motor driving motion mechanism in the vertical direction, and ensures the reciprocating uniform motion.

Disclosure of Invention

According to the defects in the prior art, the technical problems to be solved by the utility model are as follows: a vertical reciprocating motion resistance compensation device is provided, and the reciprocating uniform motion of a motion mechanism is ensured, so that the problems are solved.

The utility model relates to a vertical reciprocating motion resistance compensation device, which comprises a gear motor, wherein an output shaft of the gear motor is connected with one end of a crank, the other end of the crank is connected with a connecting rod, the crank rotates along with the output shaft of the motor, and the connecting rod reciprocates in the vertical direction.

The device mainly comprises a rotary cylinder and a connecting pipeline thereof, and an output shaft of the rotary cylinder is fixedly connected with an output shaft of a speed reducing motor. When the reverse current of the motor is regulated or the speed reducing mechanism is insufficient to offset the acceleration and downward movement caused by gravity, the mechanism can provide a resisting moment for the motor, and provide a force opposite to the gravity in the vertical direction so as to offset the downward diving acceleration caused by the gravity to the mechanism, thereby ensuring that the forward and backward reciprocating movement process is performed at a constant speed.

Wherein, the second air port, the throttle valve and the one-way valve of the rotary cylinder are all connected with the filtering device.

Preferably, the filtering device is a silencing filter. The port of the air path communicated with the outside is integrated with a silencer and connected with the outside, so that the noise is reduced and the air entering from the outside is filtered.

An output shaft of a speed reducing motor of the device is connected with an output shaft of a rotary cylinder through a coupler.

The top end of the connecting rod is connected with the bottom end of the corrugated pipe, the corrugated pipe is driven to reciprocate in the vertical direction, the corrugated pipe simulates artificial lung, and the reciprocating motion in the vertical direction simulates breathing gas, so that the device can be used for checking gas cylinders, air respirators and the like.

Compared with the prior art, the utility model has the following beneficial effects:

the vertical reciprocating motion resistance compensation device has small volume, is directly arranged at the output shaft end of the driving mechanism, and acts on the driving shaft directly. The structure is simple, the resistance direction and the resistance are adjustable, the effect of controlling the resistance moment is achieved by controlling the gas flow, and the reciprocating uniform motion of the motion mechanism is ensured.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a schematic perspective view of another view of the present utility model;

fig. 3 is a schematic diagram of the pneumatic connection of the rotary cylinder.

In the figure: a speed reducing motor 1; a rotary cylinder 2; a crank 3; a connecting rod 4; a motor mounting plate 5; a cylinder mounting plate 6; a bottom plate 7; a bracket 8; a bellows 9; a top plate 10; a first air port 11; a second port 12; a throttle valve 13; a one-way valve 14; and a silencing filter 15.

Detailed Description

The utility model will be further illustrated with reference to specific examples.

However, the description of the present utility model is merely an embodiment of a structural or even functional description, and the scope of the claims of the present utility model is not limited by the embodiments described herein.

For example, the embodiments may have various modifications and various forms, and it is to be understood that the scope of the claims of the present utility model includes equivalents capable of realizing the technical idea.

As shown in fig. 1 to 3, the present embodiment is realized by the following technical scheme: the motor comprises a gear motor 1, the gear motor 1 is fixed on a motor mounting plate 5, a rotary cylinder 2 is fixed on a cylinder mounting plate 6, and the motor mounting plate 5 and the cylinder mounting plate 6 are fixed on a bottom plate 7.

The output shaft of the gear motor 1 is connected with one end of a crank 3, the other end of the crank 3 is connected with a connecting rod 4, the crank 3 rotates along with the output shaft of the motor, the connecting rod 4 reciprocates in the vertical direction, the output shaft of the gear motor 1 is also connected with the output shaft of the rotary cylinder 2 through a coupler, a first air port 11 of the rotary cylinder 2 is connected with a throttle valve 13 and a one-way valve 14, and the one-way valve 14 can only be opened in the direction of entering the first air port 11.

As shown in fig. 3, the second port 12, the throttle valve 13, and the check valve 14 of the rotary cylinder 2 are all connected to the same silencing filter 15. The port of the air path communicated with the outside is integrated with a silencer and connected with the outside, so that the noise is reduced and the air entering from the outside is filtered.

The top end of the connecting rod 4 is connected with the bottom end of the corrugated pipe 9, and the bottom end of the corrugated pipe 9 is driven to reciprocate in the vertical direction. The top end of the corrugated pipe 9 is fixed on a top plate 10, the top plate 10 is supported by four brackets 8, and the whole equipment is externally provided with a shell.

The working principle of the embodiment is as follows:

the rotary cylinder 2 has two air inlet and outlet ports, and the air path is connected to the two air ports. When the rotary cylinder 2 acts, the air channel is driven to suck and exhaust (the process is opposite to the process that the normal compressed air drives the rotary cylinder to rotate). When the gear motor 1 rotates positively and the crank mechanism moves upwards, the crank mechanism drives the driven structure (the connecting rod 4, the corrugated pipe 9 and the like) to move upwards, the driven mechanism provides a downward resistance to the crank mechanism due to gravity, the motor is driven with sufficient power, the driving force can offset the gravity, no idle distortion phenomenon can occur, at the moment, the rotary cylinder sucks air from the first air port 11 and exhausts air from the second air port 12, the air flow enters the air path without resistance through the one-way valve 14 and the throttle valve 13, the air flow is smooth, the rotary cylinder moves without resistance, no resistance moment is generated, and therefore no force is applied to the moving process in the direction.

When the gear motor 1 is reversed and the crank mechanism moves downwards, airflow reversely flows, namely, the rotary cylinder sucks air from the second air port 12 and exhausts air from the first air port 11 at the moment, the air flow can only be exhausted through the throttle valve 13 due to the non-return action of the one-way valve 14, the throttle valve 13 is adjusted to a proper position in advance, the output flow is reduced, the rotary cylinder 2 generates a resistance moment, the movement in the direction is slowed down, thereby achieving a damping action to offset downward diving acceleration caused by gravity to the mechanism, and the forward and backward reciprocating motion process is ensured to be carried out at a uniform speed.

Of course, the foregoing is merely preferred embodiments of the present utility model and is not to be construed as limiting the scope of the embodiments of the present utility model. The present utility model is not limited to the above examples, and those skilled in the art will appreciate that the present utility model is capable of equally varying and improving within the spirit and scope of the present utility model.

Claims (5)

1. The utility model provides a vertical direction reciprocating motion resistance compensation arrangement, including gear motor (1), gear motor (1) output shaft crank (3) one end, connecting rod (4) are connected to crank (3) other end, crank (3) are rotated along with the motor output shaft, connecting rod (4) are at vertical direction reciprocating motion, a serial communication port, gear motor (1) output shaft still is connected with the output shaft of revolving cylinder (2), throttle valve (13) and check valve (14) are connected in first gas port (11) of revolving cylinder (2), check valve (14) can only open to the direction that gets into first gas port (11).

2. The vertical reciprocation resistance compensating apparatus according to claim 1, wherein the second port (12), the throttle valve (13) and the check valve (14) of the rotary cylinder (2) are connected to the filtering means.

3. A vertical reciprocation resistance compensating device according to claim 2, wherein the filtering means is a silencing filter (15).

4. The vertical direction reciprocating motion resistance compensation apparatus according to claim 1, wherein an output shaft of the gear motor (1) is connected with an output shaft of the rotary cylinder (2) through a coupling.

5. The vertical reciprocation resistance compensation device according to claim 1, wherein the top end of the connecting rod (4) is connected with the bottom end of the corrugated pipe (9) to drive the bottom end of the corrugated pipe (9) to reciprocate in the vertical direction.