CN209844752U - Motor with overload protection function - Google Patents

Abstract

The utility model discloses a motor with overload protection function, which comprises a motor shaft and a connecting shaft, wherein the right side wall of the motor shaft is provided with a first groove, the upper surface of the first groove is provided with an opening, the left side wall of the connecting shaft is provided with a second groove, the connecting shaft, the opening, the first groove, the second groove, a connecting rod, a clamping block and a clamping device are matched for use, the connecting rod in the connecting shaft is slid, the connecting rod is inserted into the first groove, the clamping block is inserted into the opening, the clamping block is clamped in the opening through the clamping device, the fixing of the motor shaft and the connecting shaft is completed, further, the rotation of the motor shaft drives the rotation of the connecting shaft, if overload occurs, the pressure of the clamping block acting on the clamping device is increased, the clamping block is separated from the binding of the clamping device and separated from the opening, the motor shaft, thereby achieving the effect of overload protection.

Description

Motor with overload protection function

Technical Field

The utility model relates to a motor overload protection technical field specifically is a motor with overload protection function.

Background

The motor needs to carry different loads under different working conditions, the motor can meet the requirements of different loads generally, if short-time impact overload of overcurrent and overvoltage occurs in the running process of the motor, the electric protection arranged in the control circuit plays a role, but if the electric protection fails or the protection arrangement is improper, the motor is further greatly damaged, the overload protection needs to be carried out through machinery, and compared with the damage of the motor, the motor with the overload protection function is specially provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a motor with overload protection function to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a motor with overload protection function, includes motor shaft and connecting axle, first recess has been seted up to the right side wall of motor shaft, the opening has been seted up to the upper surface of first recess, the second recess has been seted up to the left side wall of connecting axle, the inside wall sliding connection of second recess has the connecting rod, and the lateral wall of connecting rod pegs graft in the second recess, the lateral wall sliding connection of connecting rod has the fixture block, peg graft in the opening in the upper end of fixture block, the lateral wall fixed mounting of motor shaft has latch device, and latch device and fixture block looks joint.

Preferably, the clamping device includes the through-hole that the lateral wall of motor shaft was seted up, the inside wall sliding connection of through-hole has the sealing plug, the lateral wall fixedly connected with bayonet lock of sealing plug, the inside wall spiro union of through-hole has the screw rod, the air guide hole has been seted up to the upper end of through-hole, the inside wall fixedly connected with check valve of air guide hole, the arc recess has been seted up to the lateral wall of fixture block, the lateral wall and the arc recess looks joint of bayonet lock.

Preferably, a third groove is formed in the outer side wall of the connecting rod, the outer side wall of the fixture block is in sliding connection with the third groove, and a spring is fixedly connected between the lower surface of the fixture block and the third groove.

Preferably, the right side wall of the connecting rod is fixedly connected with a gear, the inner side wall of the second groove is fixedly connected with gear blocks which are uniformly distributed, and the outer side wall of the gear is in sliding connection with the gear blocks.

Preferably, the upper surface of the clamping block is an arc surface, and the arc-shaped groove is located at the lower end of the arc surface.

Preferably, the screw bolt and the through hole are fixedly connected with a sealing rubber ring.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a motor with overload protection function, through the motor shaft, the connecting axle, the opening, first recess, the second recess, the connecting rod, fixture block and latch device's cooperation is used, connecting rod in the slip connecting axle, make the connecting rod insert in the first recess, the fixture block inserts in the opening, block the card in the opening through latch device, accomplish the fixing of motor shaft and connecting axle, and then make the rotation of motor shaft drive the rotation of connecting axle, if take place the overload, the fixture block acts on latch device's pressure increase, the constraint that the fixture block breaks away from latch device breaks away from the opening, motor shaft and connecting axle disconnection, the motor shaft resumes the rotation because of the fixture block breaks away from the opening this moment, and then play overload protection's effect.

Drawings

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

Fig. 2 is a side view of the structure of the present invention.

In the figure: 1 motor shaft, 2 connecting axles, 3 openings, 4 second grooves, 5 connecting rods, 6 clamping blocks, 7 clamping devices, 8 through holes, 9 sealing plugs, 10 clamping pins, 11 screw rods, 12 air guide holes, 13 one-way valves, 14 arc-shaped grooves, 15 third grooves, 16 springs, 17 gears, 18 tooth blocks, 19 sealing rubber rings and 20 first grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a motor with an overload protection function comprises a motor shaft 1 and a connecting shaft 2, wherein a right side wall of the motor shaft 1 is provided with a first groove 20, the upper surface of the first groove 20 is provided with an opening 3, a left side wall of the connecting shaft 2 is provided with a second groove 4, the inner side wall of the second groove 4 is connected with a connecting rod 5 in a sliding manner, the outer side wall of the connecting rod 5 is inserted into the second groove 4, the outer side wall of the connecting rod 5 is connected with a clamping block 6 in a sliding manner, the upper end of the clamping block 6 is inserted into the opening 3, the outer side wall of the motor shaft 1 is fixedly provided with a clamping device 7, the clamping device 7 is clamped with the clamping block 6, the connecting rod 5 in the connecting shaft 2 is slid, the connecting rod 5 is inserted into the first groove 20, the clamping block 6 is slid, the clamping block 6 is inserted into the opening 3, then the clamping device 7 is clamped with the, being convenient for being connected of motor shaft 1 and connecting axle 2, when 1 normal during operation of motor shaft, fixture block 6 and latch device 7 joint, motor shaft 1 drives connecting axle 2 and rotates, and when transshipping, fixture block 6 acts on latch device 7's pressure increase, and fixture block 6 promotes latch device 7 and removes, and fixture block 6 breaks away from latch device 7, and fixture block 6 breaks away from opening 3, and connecting axle 2 breaks away from with motor shaft 1, makes 1 normal work that resumes of motor shaft, reaches overload protection's effect.

Specifically, the clamping device 7 includes a through hole 8 formed in the outer side wall of the motor shaft 1, a sealing plug 9 is slidably connected to the inner side wall of the through hole 8, a clamping pin 10 is fixedly connected to the outer side wall of the sealing plug 9, a screw rod 11 is screwed to the inner side wall of the through hole 8, an air guide hole 12 is formed in the upper end of the through hole 8, a check valve 13 is fixedly connected to the inner side wall of the air guide hole 12, an arc-shaped groove 14 is formed in the outer side wall of the clamping block 6, the outer side wall of the clamping pin 10 is clamped with the arc-shaped groove 14, when the connecting rod 5 is installed, the connecting rod 5 is firstly inserted into a proper position in the first groove 20, the clamping block 6 is located in the connecting rod 5 at an initial position, the clamping block 6 is pulled to clamp the arc-shaped groove 14 with the clamping pin 10, then gas is introduced into, make in the through-hole 8 produce atmospheric pressure, slide sealing plug 9 to opening 3, make bayonet lock 10 and arc recess 14 in close contact with, the rigidity with fixture block 6, during overload, fixture block 6 promotes bayonet lock 10 of 1 direction of rotation one side of motor shaft to sliding in through-hole 8, another moves the limit and keeps motionless because of pressure in the through-hole 8, atmospheric pressure in the through-hole 8 increases during the removal of sealing plug 9, bayonet lock 10 is at the internal rotation of opening 3, arc recess 14 breaks away from the constraint of bayonet lock 10, fixture block 6 breaks away from opening 3 to in connecting rod 5, connecting axle 2 and the disconnection of being connected of motor shaft 1, motor shaft 1 resumes to rotate.

The number of the clamping devices 7 is two, the clamping devices are respectively positioned at the left end and the right end of the opening 3, when the motor shaft 1 works normally, the two clamping pins 10 are clamped with the arc-shaped groove 14, and the clamping pins 10 do not move due to air pressure in the through holes 8.

Particularly, third recess 15 has been seted up to the lateral wall of connecting rod 5, lateral wall and the third recess 15 looks sliding connection of fixture block 6, fixedly connected with spring 16 between the lower surface of fixture block 6 and the third recess 15, when carrying out the joint of connecting rod 5, pulling connecting rod 5, make the extension of spring 16, connecting rod 5 upwards removes, during overloading, fixture block 6 is because of not having clamping device 7's constraint, in third recess 15 is got back to the elastic force effect through spring 16, realize connecting axle 2 and motor shaft 1's disconnection.

Specifically, the right side wall of connecting rod 5 is fixedly connected with gear 17, and the inside wall fixedly connected with evenly distributed's of second recess 4 tooth piece 18, gear 17's lateral wall and tooth piece 18 looks sliding connection, and sliding connection pole 5, gear 17 and tooth piece 18 take place to slide, and when motor shaft 1 drove connecting axle 2 and rotate, gear 17 and tooth piece 18 meshing.

Specifically, the upper surface of the fixture block 6 is an arc surface, and the arc-shaped groove 14 is located at the lower end of the arc surface, so that the fixture block 6 can smoothly separate from the constraint of the two clamp pins 10 when overload occurs.

Specifically, a sealing rubber ring 19 is fixedly connected to the threaded part of the screw rod 11 and the through hole 8, so that the air tightness of the through hole 8 is improved.

The working principle is as follows: when the motor shaft is installed, the connecting rod 5 is slid, the gear 17 slides on the tooth block 18, the connecting rod 5 is inserted into the first groove 20, then the motor shaft 1 is rotated to enable the fixture block 6 to be aligned with the opening 3, the fixture block 6 is pulled through an external hook, the spring 16 extends to enable the arc-shaped groove 14 to be located between the two clamping pins 10, then gas is introduced into the through hole 8 from the one-way valve 13 to enable the air pressure in the through hole 8 to be increased, the sealing plug 9 moves towards the direction of the fixture block 6 in the through hole 8, the clamping pins 10 are tightly contacted with the arc-shaped groove 14 to fix the positions of the clamping pins 10, the air pressures in the two through holes 8 are the same, the two clamping pins 10 fix the positions of the fixture block 6 to enable the motor shaft 1 to be connected with the connecting shaft 2, when the motor shaft 1 drives the connecting shaft 2 to normally rotate, the acting force of the clamping pins, the fixture block 6 moves towards the rotation direction of the fixture block 10, the fixture block 10 moves towards the through hole 8, the fixture block 6 rotates to enable the arc-shaped groove 14 to be separated from the fixture block 10, the fixture block 6 moves towards the third groove 15 under the action of the elastic force of the spring 16, the fixture block 6 is separated from the opening 3, the connection between the connecting shaft 2 and the motor shaft 1 is disconnected, the motor shaft 1 recovers to rotate, and the overload protection effect is achieved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a motor with overload protection function which characterized in that: including motor shaft (1) and connecting axle (2), first recess (20) have been seted up to the right side wall of motor shaft (1), opening (3) have been seted up to the upper surface of first recess (20), second recess (4) have been seted up to the left side wall of connecting axle (2), the inside wall sliding connection of second recess (4) has connecting rod (5), and the lateral wall of connecting rod (5) pegs graft in second recess (4), the lateral wall sliding connection of connecting rod (5) has fixture block (6), peg graft in opening (3) the upper end of fixture block (6), the lateral wall fixed mounting of motor shaft (1) has latch device (7), and latch device (7) and fixture block (6) looks joint.

2. The motor with the overload protection function according to claim 1, wherein: clamping device (7) include through-hole (8) that the lateral wall of motor shaft (1) was seted up, the inside wall sliding connection of through-hole (8) has sealing plug (9), lateral wall fixedly connected with bayonet lock (10) of sealing plug (9), the inside wall spiro union of through-hole (8) has screw rod (11), air guide hole (12) have been seted up to the upper end of through-hole (8), the inside wall fixedly connected with check valve (13) of air guide hole (12), arc recess (14) have been seted up to the lateral wall of fixture block (6), the lateral wall and arc recess (14) looks joint of bayonet lock (10).

3. The motor with the overload protection function according to claim 1, wherein: the outer side wall of the connecting rod (5) is provided with a third groove (15), the outer side wall of the fixture block (6) is in sliding connection with the third groove (15), and a spring (16) is fixedly connected between the lower surface of the fixture block (6) and the third groove (15).

4. The motor with the overload protection function according to claim 1, wherein: the right side wall fixedly connected with gear (17) of connecting rod (5), the inside wall fixedly connected with evenly distributed's of second recess (4) tooth piece (18), the lateral wall and the tooth piece (18) looks sliding connection of gear (17).

5. The motor with the overload protection function according to claim 2, wherein: the upper surface of the clamping block (6) is an arc surface, and the arc-shaped groove (14) is located at the lower end of the arc surface.

6. The motor with the overload protection function according to claim 2, wherein: and a sealing rubber ring (19) is fixedly connected at the screwed joint of the screw rod (11) and the through hole (8).