CN211981645U - Servo motor that stability can be high - Google Patents

Abstract

The utility model discloses a servo motor with high stability, which comprises a motor body, wherein the bottom of the motor body is provided with an energy absorption seat, the inside of the energy absorption seat is provided with a shock absorption cavity, energy storage liquid for noise reduction is arranged in the shock absorption cavity, the shock absorption cavity comprises a plurality of separated cavities, a circulation hole is arranged between the cavities, and the liquid level of the energy storage liquid when the motor body is not in operation is higher than the circulation hole; a gap area is arranged between the liquid level of the energy storage liquid and the top wall of the chamber. The utility model has the advantages that the energy storage liquid in the shock absorption cavity flows, the vibration energy can be converted into the kinetic energy of the outer energy storage liquid, the energy storage liquid flows in a liquid manner, noise can not be generated in a large amount, and the kinetic energy of the energy storage liquid is released as heat energy, so that the energy absorption seat can absorb the vibration energy of the motor and can absorb the noise to provide the stability for the operation of the motor; the energy-absorbing seat can be pre-installed and molded in the motor production link, and the molded energy-absorbing seat and the motor are integrated, so that the transportation and the assembly are convenient, and the use of a servo motor is convenient.

Description

Servo motor that stability can be high

Technical Field

The utility model belongs to the technical field of servo motor, specifically a servo motor that stability can be high

Background

The servo motor is an engine for controlling the operation of mechanical elements in a digital servo system, is an indirect speed change device of a supplementary motor, the rotating speed of a rotor of the servo motor is controlled by an input signal and can quickly respond, the servo motor is used as an execution element in an automatic control system, has the characteristics of small electromechanical time constant, high linearity, starting voltage and the like, and can convert a received electric signal into angular displacement or angular speed on a motor shaft for output. In reality, the servo motor may be collided during operation, but the conventional servo motor has no energy absorption mechanism, so that the stable operation of the motor is directly influenced by collision. In the prior art, a buffering structure is usually arranged outside the motor, so that the motor is not convenient to assemble and use, and the application environment of the motor is limited.

For example, chinese patent document CN2019109260914 discloses an invention patent of "a mounting damping mechanism of a servo motor" in 7/1/2020, which discloses a mounting damping mechanism of a servo motor, including a servo motor body, an upper mounting bracket, a lower mounting bracket, and an upper fixing seat and a lower fixing seat respectively fixed to the upper mounting bracket and the lower mounting bracket, wherein the upper mounting bracket and the lower mounting bracket are both provided with a plurality of first mounting holes through, the upper fixing seat and the lower fixing seat are fastened and fixed to each other to form a fixing groove for mounting the servo motor body, the servo motor body is sleeved in the fixing groove along the length direction of the fixing groove, and the inner wall ring of the fixing groove is provided with a damping buffer main body; and a reset elastic part is arranged between the upper mounting frame and the lower mounting frame. The disadvantages are that: the installation shock-absorbing structure is located outside the servo motor, the structure is complex, the occupied space is large, the installation shock-absorbing structure is difficult to pre-install with the servo motor, and the installation and the use of the servo motor are influenced.

Disclosure of Invention

Based on the problem, the utility model provides a servo motor that stability can be high, assembly installation servo motor when being convenient for use improves servo motor's reliability and installation effectiveness.

The utility model discloses a another purpose is to guarantee the inside compact structure nature of motor body and heat-sinking capability.

In order to realize the utility model purpose, the utility model adopts the following technical scheme:

a servo motor with high stability performance comprises a motor body, wherein an energy absorption seat is arranged at the bottom of the motor body, a shock absorption cavity is arranged inside the energy absorption seat, energy storage liquid for noise reduction is arranged in the shock absorption cavity, the shock absorption cavity comprises a plurality of separated cavities, circulation holes are formed among the cavities, and the liquid level of the energy storage liquid is higher than that of the circulation holes when the motor body does not operate; a gap area is arranged between the liquid level of the energy storage liquid and the top wall of the chamber.

The vibration energy can be converted into the kinetic energy of the external energy storage liquid through the flowing of the energy storage liquid in the vibration absorption cavity, the energy storage liquid flows as liquid, noise is not generated greatly, and then the kinetic energy of the energy storage liquid is released as heat energy, so that the energy absorption seat can absorb the vibration energy of the motor and can absorb the noise to provide the stability for the operation of the motor; the energy-absorbing seat can be pre-installed and molded in the motor production link, and the molded energy-absorbing seat and the motor are integrated, so that the transportation and the assembly are convenient, and the use of a servo motor is convenient.

Preferably, the energy absorption seat is made of heat conduction materials, and heat dissipation gear ribs are arranged on the outer side of the energy absorption seat. The energy-absorbing seat can absorb the vibration energy and the noise energy of the motor body and outwards give off in the form of heat energy, the heat dissipation of the motor can be guaranteed by arranging the cooling structure outside the energy-absorbing seat, and the cooling structure setting mode which is more convenient to the motor is compared with the traditional cooling structure setting mode.

Preferably, inhale the shake chamber and be equipped with the board that resets in the cavity, reset board and inhale the shake chamber and pass through the elastic component and be connected. The energy-absorbing effect of inhaling the shake chamber can be strengthened to the board that resets and elastic component, with energy transfer inhale the shake chamber, the elastic force warp and produce the potential energy, the board that resets receives this effect to move, and the potential energy that will shake and turn into the board kinetic energy that resets and elastic component to strengthen the inhaling of energy-absorbing seat and act on.

Preferably, a shifting fork for collecting and releasing noise energy is arranged in the cavity. The energy absorption effect of the shock absorption cavity is enhanced; energy storage liquid and the board that resets cooperate each other, the flow of energy storage liquid and the vibrations of the board that resets can interact, and the vibrations of shift fork also can act on energy storage liquid to can strengthen the energy-absorbing effect of energy-absorbing seat.

As preferred, motor body includes the casing and is located stator, rotor and the pivot of casing, and the pivot rotates with the casing to be connected, and the front end of casing is equipped with the front end housing, is equipped with the sound-absorbing chamber in the front end housing, and the sound-absorbing intracavity is equipped with inhales the sound cotton, inhales and is equipped with a plurality of mounting hole in the sound cotton, is equipped with energy storage component in the mounting hole. The front end of the motor is silenced through sound-absorbing cotton, the sound-absorbing cotton can also assist in absorbing vibration energy, the noise energy is converted into heat energy, vibration caused by noise is prevented, and the energy storage assembly assists in absorbing vibration in the installation cavity; because the front end cover and the energy absorption seat are not arranged in the motor shell, the compactness of the motor body can be ensured, and the stable operation of the motor is ensured.

Preferably, the energy storage assembly comprises an energy storage block and energy storage springs positioned on two sides of the energy storage block, and the outer ends of the energy storage springs are connected to the wall surface of the sound absorption cavity. The energy storage spring converts noise and vibration energy into elastic potential energy and kinetic energy of the energy storage block, assists in absorbing the vibration energy, and improves the operation stability of the motor.

Preferably, the side surface of the motor body is provided with a plurality of heat dissipation grooves which are arranged in parallel at intervals and are parallel to the axis of the motor body. The uneven surface is formed on the side face of the motor body through the radiating grooves, the radiating area of the motor body in contact with the outside is increased, the radiating capacity of the motor body is improved, the influence of temperature on the operation of the motor is reduced, and the stability of the operation of the motor is improved.

To sum up, the beneficial effects of the utility model are that: the servo motor is convenient to assemble and install during use, and the reliability and the installation efficiency of the servo motor are improved; the motor shell is convenient to install and use; the internal structure compactness and the heat-sinking capability of motor body are guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view at a-a in fig. 1.

Fig. 3 is an enlarged view at B in fig. 1.

Fig. 4 is an enlarged view at C in fig. 1.

Fig. 5 is a side view of the present invention.

Wherein: the heat dissipation groove 11 of the shell 1, the rotor 3 and the rotating shaft 4 of the rotor 2, the cavity 61 of the energy absorption seat 6, the clearance area 62, the resetting plate 64, the elastic part 65, the shifting fork 66, the energy storage liquid 67, the heat dissipation gear rib 68, the front end cover 7, the sound absorption cavity 71 and the mounting hole 72 are provided with energy storage blocks 74 of an energy storage spring 73.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Example (b):

as shown in fig. 1 to 5, a servo motor with high stability, including motor body, motor body includes casing 1 and stator 2 that is located casing 1, rotor 3 and pivot 4, pivot 4 rotates with casing 1 to be connected, pivot 4 passes through the bearing with casing 1 to be connected, motor body's casing 1's cross sectional shape is the square of four corners indent, motor body's side is equipped with the radiating groove 11 that a plurality of parallel intervals set up, the axis of radiating groove 11 parallel motor body, motor body's bottom is equipped with energy-absorbing seat 6, energy-absorbing seat 6's shape is the cuboid, the position of casing 1's bottom surface cooperation energy-absorbing seat 6 is equipped with the square groove and is used for accomplishing the laminating installation of energy-absorbing seat 6. The energy absorption seat 6 is made of heat conduction materials, and heat dissipation gear ribs 68 are arranged on the outer side of the energy absorption seat 6. The inside of energy-absorbing seat 6 is equipped with inhales the shake chamber, inhales the energy storage liquid 67 that the intracavity was equipped with the amortization and uses, and energy storage liquid 67 can adopt the common coolant liquid in the market. The shock absorption cavity comprises six separated chambers 61, the chambers 61 are cylindrical, the six chambers 61 are rectangular in an array in a 2 x 3 mode, circulation holes 62 are formed between the chambers 61 in the same row and the same column, and the liquid level of the energy storage liquid 67 is higher than the circulation holes when the motor body does not run; a void region 63 is provided between the surface of the charge fluid 67 and the top wall of the chamber 61. The ability of the charging fluid 67 to circulate between the chambers 61 is ensured by the interstitial regions 63. The energy absorption seat 6 can be provided with screw holes outside the shock absorption cavity, so that the energy absorption seat 6 plays a mounting role. Shock-absorbing cavity is equipped with reset plate 64 in cavity 61, and reset plate 64 is connected with shock-absorbing cavity through elastic component 65. Elastic component 65 adopts the spring, and the upside at cavity 61 is connected to the upper end of elastic component 65, and the connection is equipped with four elastic components 65 on the board 64 that resets, guarantees the stability that resets of the board 64 each position that resets, and the downside laminating of the board 64 that resets is at energy storage liquid 67 liquid level, improves the linkage ability of energy storage liquid 67 and the board 64 that resets. The side of the reset plate 64 where the elastic member 65 is provided and the upper side of the chamber 61 form a void area 63. A fork 66 for collecting and releasing shock energy is provided in the chamber 61. The shifting fork 66 is vertically arranged at the bottom of the cavity 61, and the upper end of the shifting fork 66 is provided with a Y-shaped fork, so that the response capability of the shifting fork 66 to vibration is improved. The front end of motor body's casing 1 is equipped with front end housing 7, is equipped with sound absorbing cavity 71 in front end housing 7, and sound absorbing cavity 71 is equipped with sound absorbing cotton, is equipped with a plurality of mounting hole 72 in the sound absorbing cotton, and is preferred, and all mounting holes divide into two sets ofly, and the axis of two sets of mounting holes is located two concentric circles respectively, and the mounting hole in every group all is about pivot axis circumference array. The mounting hole 72 is a cylindrical hole, and an energy storage assembly is arranged in the mounting hole 72. The energy storage assembly comprises an energy storage block 74 and energy storage springs 73 positioned on two sides of the energy storage block 74, the energy storage block 74 is in a cylindrical shape and is in clearance fit in the mounting hole, and the outer ends of the energy storage springs 73 are connected to the wall surface of the sound absorption cavity 71.

Conventional servo motor during operation, vibrations and the noise production, and do not have the ability of coping with the impact, and this application motor vibrations or when receiving the collision, the casing is symmetrical structure originally, the energy-absorbing seat is located casing one side and forms evagination structure, consequently, energy-absorbing seat 6 can be transmitted to motor vibrations majority, reset plate 64 rocks under the elastic force effect, shift fork 66 also rocks along with vibrations, energy storage liquid 67 is more violent in the flow between cavity 61 under the effect of shift fork 66, vibrations energy and noise turn into energy storage liquid 67, shift fork 66, reset plate 64 and elastic component 65's kinetic energy or potential energy, later turn into heat energy and distribute the external world from energy-absorbing seat 6, consume the vibrations that the motor operation produced and the impact that receives, consequently, the stability of motor operation can be improved.

It will be appreciated by those of ordinary skill in the art that the examples described herein are intended to assist the reader in understanding the manner of practicing the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and examples. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.

Claims (7)

1. A servo motor with high stability performance is characterized by comprising a motor body, wherein an energy absorption seat is arranged at the bottom of the motor body, a shock absorption cavity is arranged inside the energy absorption seat, energy storage liquid for noise reduction is arranged in the shock absorption cavity, the shock absorption cavity comprises a plurality of separated cavities, circulation holes are formed among the cavities, and the liquid level of the energy storage liquid is higher than that of the circulation holes when the motor body does not operate; a gap area is arranged between the liquid level of the energy storage liquid and the top wall of the chamber.

2. The servo motor with high stability as claimed in claim 1, wherein the energy absorbing seat is made of heat conductive material, and heat dissipating ribs are provided on an outer side of the energy absorbing seat.

3. The servo motor with high stability as claimed in claim 1, wherein the shock absorbing chamber is provided with a reset plate in the chamber, and the reset plate is connected with the shock absorbing chamber through an elastic member.

4. A high-stability servo motor as claimed in claim 1 or 3, wherein a fork for collecting and releasing noise energy is provided in the chamber.

5. The servo motor as claimed in claim 1, 2 or 3, wherein the motor body comprises a housing, and a stator, a rotor and a rotating shaft in the housing, the rotating shaft is rotatably connected with the housing, a front end cap is disposed at the front end of the housing, a sound-absorbing cavity is disposed in the front end cap, sound-absorbing cotton is disposed in the sound-absorbing cavity, a plurality of mounting holes are disposed in the sound-absorbing cotton, and an energy storage assembly is disposed in the mounting holes.

6. The servo motor with high stability of claim 5, wherein the energy storage component comprises an energy storage block and energy storage springs positioned at two sides of the energy storage block, and the outer ends of the energy storage springs are connected to the wall surface of the sound absorption cavity.

7. A high stability servo motor as claimed in claim 1, 2 or 3, wherein said motor body has a plurality of parallel heat dissipation slots spaced from each other on its side, said heat dissipation slots being parallel to the axis of the motor body.

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