Gear motor protection device

Abstract

The utility model relates to the technical field of gear motors, and discloses a gear motor protection device which comprises a gear motor body, a connecting shaft is installed at the front end of the gear motor body, a sliding groove is formed in the surface of the connecting shaft, and a fixing plate is fixedly connected into the sliding groove. One end of the fixing plate is fixedly connected with a limiting rod, the tail end of the limiting rod is fixedly connected with the interior of the sliding groove, the surface of the limiting rod is slidably connected with a sliding block, the interior of the sliding groove is rotatably connected with an arc-shaped plate, and the top end of the sliding block is rotatably connected with a connecting plate. According to the gear motor protection device, automatic heat dissipation can be carried out when the gear motor main body runs, so that the gear motor main body can be kept at a moderate temperature when running, the aging of an insulating material, the copper loss of a winding and the damage of parts such as a bearing are reduced, and the effective protection of the gear motor main body is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a reduction motor technical field especially relates to a reduction motor protection device. BACKGROUND

[0002] Reduction motor is a power transmission mechanism, it reduces the output rotating speed of motor, improves the output torque simultaneously, usually by motor and reducer two parts are composed, because reduction motor in the operation process, motor part can appear overload, overvoltage, undervoltage etc., reducer part can also appear fault because of excessive load, poor lubrication etc., so need protection device to ensure its normal operation.

[0003] Chinese patent discloses a kind of reduction motor protection device (authorized announcement number CN207017792U), the D type transmission shaft and gear shaft sleeve D type hole of the patent technology reduction motor reduction gearbox form effective cooperation, reach transmission torsion effect, glass pearl is respectively loaded into the screw hole of transmission gear, when external force pushes transmission gear, glass pearl will be out of spherical groove, transmission gear and gear shaft sleeve will be disconnected and slip, form a set of effective gear clutch protection device, strong practicability.

[0004] For the above and prior art related technology, the inventor believes that the following defects often exist: at present, the design target of most reduction motor protection devices is to prevent external damage and adjust internal current to avoid damage, however, in actual application, reduction motor often appears overheating phenomenon, and the existing protection device lacks effective heat dissipation mechanism, which can cause internal elements of motor to be damaged due to high temperature, thereby affecting its protection efficiency. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is that the prior art has the defect of poor heat dissipation effect, and therefore a reduction motor protection device is proposed.

[0006] In order to achieve the above purpose, the following technical scheme is adopted in the present application: a reduction motor protection device, comprising a reduction motor main body, a connecting shaft is installed at the front end of the reduction motor main body, a sliding groove is formed in the surface of the connecting shaft, a fixed plate is fixedly connected inside the sliding groove, a limiting rod is fixedly connected to one end of the fixed plate, the distal end of the limiting rod is fixedly connected to the inside of the sliding groove, a sliding block is slidably connected to the surface of the limiting rod, an arc-shaped plate is rotatably connected to the inside of the sliding groove, a connecting plate is rotatably connected to the top end of the sliding block, and the top end of the connecting plate is rotatably connected to the bottom end of the arc-shaped plate.

[0007] Preferably, sliding grooves are formed in both sides of the sliding groove, sliding blocks are fixedly connected to both sides of the sliding block, and the sliding groove is slidably connected to the sliding block.

[0008] Preferably, a reset spring is connected to the surface of the limiting rod in a sliding mode, one end of the reset spring close to the sliding block is fixedly connected with the sliding block, and the other end of the reset spring away from the sliding block is fixedly connected with the fixed plate.

[0009] Preferably, a plurality of reinforcing cores are mounted on the surface of the speed reducer main body, and the reinforcing cores are in the shape of a trapezoid.

[0010] Preferably, a sealing film is sleeved on the surface of the speed reducer main body.

[0011] Preferably, the arc-shaped plate is made of liquid crystal elastic material.

[0012] Technical effects and advantages of the utility model:

[0013] In the utility model, when the connecting shaft is rotating, centrifugal force generated by the connecting shaft makes the arc-shaped plate slowly expand outward, and simultaneously drives the sliding block to slide on the surface of the limiting rod, so that a stable limiting effect is formed when the arc-shaped plate expands, at this time, the contact area of the arc-shaped plate with air is increased, and the airflow around the connecting shaft is driven in the rotating process, so that the heat generated by the connecting shaft and the speed reducer main body is quickly dispersed, thereby achieving the automatic heat dissipation effect of the connecting shaft in the rotating process; through the setting of automatic heat dissipation during the operation of the speed reducer main body, the speed reducer main body can maintain a moderate temperature during operation, reduces the aging of the insulating material, the copper loss of the winding and the damage of the bearing and other components, and realizes the effective protection of the speed reducer main body. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of the speed reducer main body structure of the utility model;

[0015] Figure 2 It is a schematic view of the heat dissipation structure of the speed reducer of the utility model;

[0016] Figure 3 It is a schematic view of the cross-sectional structure of the heat dissipation structure of the utility model;

[0017] Figure 4 It is a schematic view of the surface protection structure of the speed reducer of the utility model.

[0018] Legend: 1, speed reducer main body; 2, connecting shaft; 3, sliding groove; 4, limiting rod; 5, sliding block; 6, fixed plate; 7, arc-shaped plate; 8, connecting plate; 9, sliding groove; 10, sliding block; 11, reset spring; 12, reinforcing core; 13, sealing film. DETAILED DESCRIPTION

[0019] The utility model will be further explained in detail in combination with the drawings and the preferred embodiment, these drawings are all simplified schematic diagram, only with the schematic way the basic structure of the utility model is shown, therefore it only shows the related structure of the utility model.

[0020] Referring to Figure 1 - Figure 3 As shown in the figure, the utility model provides a technical scheme: a speed reducer motor protection device, including speed reducer motor main part 1, the front end of speed reducer motor main part 1 is installed with connecting shaft 2, the surface of connecting shaft 2 is opened with sliding slot 3, the inside fixed connection of sliding slot 3 has fixed plate 6, one end of fixed plate 6 is fixedly connected with limit rod 4, the tail end of limit rod 4 is fixedly connected with the inside of sliding slot 3, the surface of limit rod 4 is slidably connected with sliding block 5, the inside rotatably connected with arc plate 7 of sliding slot 3, the top of sliding block 5 is rotatably connected with connecting plate 8, the top of connecting plate 8 is rotatably connected with the bottom of arc plate 7, when connecting shaft 2 is in the process of rotating, the centrifugal force generated thereby makes arc plate 7 slowly spread outwards, simultaneously drives sliding block 5 to slide on the surface of limit rod 4, makes the stable limiting action when arc plate 7 spreads out, the contact area of arc plate 7 with air increases, will drive the airflow around connecting shaft 2 in the process of rotating, makes the heat generated by connecting shaft 2 and speed reducer motor main part 1 quickly disperse, thereby reaches the automatic heat dissipation effect when connecting shaft 2 rotates, through the setting of automatic heat dissipation when the operation of speed reducer motor main part 1, speed reducer motor main part 1 can keep a moderate temperature when operating, reduces the aging of insulating material, winding copper loss and the damage of bearing parts, realizes the effective protection to speed reducer motor main part 1.

[0021] Referring to Figure 3 As shown in the figure, in the embodiment: the inside of sliding slot 3 is opened with sliding slot 9 on both sides, both sides of sliding block 5 are fixedly connected with sliding block 10, the inside of sliding slot 9 is slidably connected with sliding block 10, through the setting of sliding slot 9 and sliding block 10, when sliding block 5 moves in the inside of sliding slot 3, will form greater friction, makes the speed of arc plate 7 to spread out slow down, prevents the influence of spreading speed on the stability when connecting shaft 2 rotates, reduces the accident rate.

[0022] Referring to Figure 3 As shown in the figure, in the embodiment: the surface of limit rod 4 is slidably connected with return spring 11, one end of return spring 11 close to sliding block 5 is fixedly connected with sliding block 5, the end of return spring 11 away from sliding block 5 is fixedly connected with fixed plate 6, through the setting of return spring 11, when connecting shaft 2 rotates, releases the tension stored by return spring 11, drives sliding block 5 to rebound quickly, connecting plate 8 on the surface of sliding block 5 drives arc plate 7 to rebound quickly, thereby reaches the quick retraction of arc plate 7 after connecting shaft 2 stops, prevents arc plate 7 from being in the spreaded state all the time, influences the normal use of connecting shaft 2.

[0023] Referring to Figure 4 As shown in the figure, in the embodiment: the surface of the reduction motor body 1 is provided with several reinforcing cores 12, the shape of the reinforcing core 12 is trapezoidal, by adopting the trapezoidal design of the reinforcing core 12, when the reduction motor body 1 is subjected to external pressure, the reinforcing core 12 can disperse the pressure to a larger area, thereby improving the compression strength of the shell, and effectively preventing the internal elements from being damaged.

[0024] Referring to Figure 4 As shown in the figure, in the embodiment: the surface of the reduction motor body 1 is provided with a sealing film 13, by the setting of the sealing film 13, the surface of the reduction motor body 1 can be effectively sealed and wrapped, thereby effectively ensuring that the water vapor and impurities in the outside will not enter the inside of the reduction motor body 1, thereby ensuring the stability during use.

[0025] Referring to Figure 3 As shown in the figure, in the embodiment: the arc-shaped plate 7 is made of liquid crystal elastic material, by adopting the liquid crystal elastic material to make the arc-shaped plate 7, the arc-shaped plate 7 can have good heat absorption and deformation, so that the service life of the arc-shaped plate 7 is significantly improved.

[0026] Working principle: when the connecting shaft 2 rotates, the centrifugal force generated by the connecting shaft 2 makes the arc-shaped plate 7 slowly expand outward, and at the same time, the sliding block 5 slides on the surface of the limiting rod 4, so that the arc-shaped plate 7 forms a stable limiting effect when it expands, at this time, the contact area of the arc-shaped plate 7 with the air increases, and the airflow around the connecting shaft 2 is generated during rotation, so that the heat generated by the connecting shaft 2 and the reducer motor body 1 is quickly dispersed, thereby achieving the automatic heat dissipation effect of the connecting shaft 2 during rotation; through the automatic heat dissipation setting during the operation of the reducer motor body 1, the reducer motor body 1 can maintain a moderate temperature during operation, reduce the aging of the insulation material, the copper loss of the winding and the damage of the bearing and other components, realize the effective protection of the reducer motor body 1, through the setting of the sliding groove 9 and the sliding block 10, when the sliding block 5 moves in the sliding groove 3, a large friction force is formed, so that the expansion speed of the arc-shaped plate 7 is slowed down, preventing the expansion speed from being too fast to affect the stability of the connecting shaft 2 during rotation, reducing the accident rate, through the setting of the reset spring 11, when the connecting shaft 2 stops rotating, the tension stored in the reset spring 11 is released, driving the sliding block 5 to quickly rebound, the connecting plate 8 on the surface of the sliding block 5 drives the arc-shaped plate 7 to quickly rebound, thereby achieving the quick recovery of the arc-shaped plate 7 after the connecting shaft 2 stops, preventing the arc-shaped plate 7 from being in the expanded state all the time, affecting the normal use of the connecting shaft 2, through the use of the trapezoidal design of the reinforcing core 12, when the reducer motor body 1 is subjected to external pressure, the reinforcing core 12 can disperse the pressure to a larger area, thereby improving the pressure resistance of the shell, and effectively preventing the internal elements from being damaged, through the setting of the sealing film 13, the surface of the reducer motor body 1 can be effectively sealed and wrapped, thereby effectively preventing water vapor and impurities from entering the inside of the reducer motor body 1, thereby ensuring the stability during use, through the use of liquid crystal elastic material to make the arc-shaped plate 7, the arc-shaped plate 7 has good heat absorption and deformation, and the service life of the arc-shaped plate 7 is significantly improved.

[0027] Finally, it should be pointed out that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A reduction motor protection device comprising a reduction motor body (1), characterized by: The front end of the deceleration motor body (1) is provided with a connecting shaft (2), the surface of the connecting shaft (2) is provided with a sliding groove (3), the inside of the sliding groove (3) is fixedly connected with a fixed plate (6), one end of the fixed plate (6) is fixedly connected with a limiting rod (4), the tail end of the limiting rod (4) is fixedly connected with the inside of the sliding groove (3), the surface of the limiting rod (4) is slidably connected with a sliding block (5), the inside of the sliding groove (3) is rotatably connected with an arc-shaped plate (7), the top end of the sliding block (5) is rotatably connected with a connecting plate (8), the top end of the connecting plate (8) is rotatably connected with the bottom end of the arc-shaped plate (7).

2. A reduced speed motor protection device according to claim 1, wherein: Both sides of the inside of the sliding groove (3) are provided with a sliding groove (9), both sides of the sliding block (5) are fixedly connected with a sliding block (10), the inside of the sliding groove (9) is slidably connected with the sliding block (10).

3. A reduced speed motor protection device according to claim 1, wherein: The surface of the limiting rod (4) is slidably connected with a return spring (11), one end of the return spring (11) close to the sliding block (5) is fixedly connected with the sliding block (5), the other end of the return spring (11) away from the sliding block (5) is fixedly connected with the fixed plate (6).

4. A reduced speed motor protection device according to claim 1, wherein: The surface of the deceleration motor body (1) is provided with a plurality of reinforcing cores (12), the shape of the reinforcing core (12) is trapezoidal.

5. A reduced speed motor protection device according to claim 1, wherein: The surface of the deceleration motor body (1) is provided with a sealing film (13).

6. A reduced speed motor protection device according to claim 1, wherein: The arc-shaped plate (7) is made of liquid crystal elastic material.

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