CN217762002U - Worm gear speed reducer with overload protection structure - Google Patents

Abstract

The utility model discloses a take worm gear speed reducer of overload protection structure, include: the mounting shell is internally provided with a worm in a rotating way; the centrifugal alarm switch is connected to one end of the worm and comprises a limiting frame, a centrifugal extrusion mechanism, a toggle mechanism and a toggle switch; the alarm, it is installed on the installation casing, and the alarm passes through centrifugal alarm switch and external power electric connection. The utility model discloses utilize centrifugal extrusion mechanism and toggle mechanism matched with mode of setting, first extrusion piece receives centrifugal force when connecting sleeve rotates, stimulates the connecting rod, drives the stripper plate through the montant and shifts up the motion, stirs the handle of dialling the dynamic switch through the stripper plate, reports to the police through the alarm, warns the staff, prevents that meshing between worm and the worm wheel from transshipping, just also is convenient for protect worm and worm wheel, prolongs the life of worm and worm wheel.

Description

Worm gear speed reducer with overload protection structure

Technical Field

The utility model relates to a worm gear speed reducer machine field, in particular to take worm gear speed reducer machine of overload protection structure.

Background

A worm gear reducer is a power transmission mechanism that is commonly used, and can reduce the number of revolutions of a motor to a desired number of revolutions, thereby obtaining a large torque. The worm gear speed reducer mainly has the following functions: the output torque is improved while the speed is reduced, and the torque output proportion is multiplied by the reduction ratio according to the output of the motor, but the rated torque of the speed reducer cannot be exceeded; the deceleration reduces the inertia of the load at the same time, the reduction in inertia being the square of the reduction ratio.

Present worm gear speed reducer is at the in-process that uses, because worm drive is often used for under the great condition of load change, when the rotational speed of motor is too fast for often transshipping because of the load is too big, the worm gear meshing is not in the same direction as easy card post this moment, thereby makes the worm pair damage easily, makes worm gear speed reducer's life shorter, and the practicality is relatively poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take worm gear speed reducer of overload protection structure 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: a worm gear reducer with an overload protection structure comprises:

the mounting shell is internally provided with a worm in a rotating way;

the centrifugal type alarm switch is connected to one end of the worm and comprises a limiting frame, a centrifugal type extrusion mechanism, a toggle mechanism and a toggle switch, wherein the limiting frame is fixedly installed at the bottom of the inner wall of the installation shell, the centrifugal type extrusion mechanism is connected to one end of the worm, the centrifugal type extrusion mechanism is arranged in the limiting frame, the toggle mechanism is connected with the top of the limiting frame in an inserting mode, and the toggle switch is arranged on one side of the toggle mechanism;

the alarm, it is installed on the installation casing, the alarm passes through centrifugal alarm switch and external power source electric connection.

Preferably, one end of the worm is connected with a rotating shaft, the rotating shaft is connected with the limiting frame in a rotating and inserting manner, the rotating shaft is matched with the centrifugal extrusion mechanism, the other end of the worm is connected with a connecting shaft, and the connecting shaft is connected with the mounting shell in a rotating and inserting manner.

Preferably, centrifugal extrusion mechanism includes connecting sleeve, connecting rod, first extrusion piece and elastic support component, connecting sleeve and pivot are fixed to be cup jointed, the connecting rod is connected with the top slip interlude of connecting sleeve, first extrusion piece fixed connection is in the one end of connecting rod, elastic support component sets up in the outside of connecting rod.

Preferably, the elastic support component comprises a spring and a connecting sheet, the spring is movably sleeved outside the connecting rod, and the connecting sheet is fixedly connected to the other end of the connecting rod.

Preferably, the toggle mechanism comprises a vertical rod, a connecting plate, a second extrusion block and an extrusion plate, the connecting plate is fixedly connected to the bottom end of the vertical rod, the second extrusion block is fixedly connected to the bottom end of the connecting plate, the second extrusion block is slidably and alternately connected with the top of the limiting frame, and the extrusion plate is fixedly connected to one side of the vertical rod.

Preferably, toggle mechanism still includes the antiskid cover and presses the briquetting, logical groove has been seted up on the installation casing, the antiskid cover is fixed to cup joint with the top of montant, the antiskid cover is laminated with the inner wall that leads to the groove each other, press briquetting fixed connection in the top of montant.

Preferably, the worm is engaged with a worm wheel, the middle part of the worm wheel is inserted and connected with a main shaft, and the main shaft is rotatably inserted and connected with the mounting shell.

The utility model discloses a technological effect and advantage:

(1) The utility model discloses utilize centrifugal extrusion mechanism and toggle mechanism matched with mode of setting, first extrusion piece receives centrifugal force when connecting sleeve rotates, stimulates the connecting rod, drives the stripper plate through the montant and moves up, stirs the handle of stirring formula switch through the stripper plate, reports to the police through the alarm, warns the staff, makes the staff can slow down or cut off the power supply to the motor and handle, prevents that the meshing between worm and the worm wheel is transshipped, also is convenient for protect worm and worm wheel, the life of extension worm and worm wheel;

(2) The utility model discloses utilize spring and connection piece matched with to set up the mode, elastic support through the spring to the connection piece, so that under the not pivoted state of connecting sleeve, make the laminating of first extrusion piece and connecting sleeve's surface, can not contact with toggle mechanism, and elastic support through the spring to the connection piece, also prevent connecting sleeve when low-speed, first extrusion piece is to toggle mechanism's centrifugal extrusion, only when the rotational speed is big to the uniform velocity, when centrifugal force is big to a certain extent, just can extrude the second extrusion piece.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the internal front structure of the present invention.

Fig. 3 is a schematic view of the internal structure of the centrifugal extruding mechanism.

Fig. 4 is the schematic diagram of the internal structure of the toggle mechanism.

In the figure: 1. installing a shell; 2. a worm; 21. a rotating shaft; 3. a limiting frame; 4. a centrifugal extrusion mechanism; 41. a connecting sleeve; 42. a connecting rod; 43. a first extrusion block; 44. a spring; 45. connecting sheets; 5. a toggle mechanism; 51. a vertical rod; 52. a connecting plate; 53. a second extrusion block; 54. a pressing plate; 55. an anti-slip sleeve; 56. a pressing block; 6. a toggle switch; 7. a worm gear.

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 efforts all belong to the protection scope of the present invention.

The utility model provides a take worm gear speed reducer of overload protection structure as shown in fig. 1-4, include:

installation casing 1, its inside rotation is provided with worm 2, the one end of worm 2 is connected with pivot 21, pivot 21 rotates with spacing 3 and alternates and is connected, pivot 21 and the cooperation of centrifugal extrusion mechanism 4, the other end of worm 2 is connected with the connecting axle, the connecting axle rotates with installation casing 1 and alternates and is connected, the meshing is connected with worm wheel 7 on the worm 2, the middle part of worm wheel 7 alternates and is connected with the main shaft, the main shaft rotates with installation casing 1 and alternates and is connected, the motor is installed in the front of installation casing 1, be convenient for drive worm wheel 7 through the motor and rotate, through the meshing between worm 2 and the worm wheel 7, thereby alright pass through the cooperation between worm 2 and the worm wheel 7, power to the output slows down.

Centrifugal alarm switch, it is connected in the one end of worm 2, centrifugal alarm switch includes spacing 3, centrifugal extrusion mechanism 4, toggle mechanism 5 and toggle switch 6, spacing 3 fixed mounting in the bottom of installation casing 1 inner wall, centrifugal extrusion mechanism 4 is connected in the one end of worm 2, centrifugal extrusion mechanism 4 sets up in the inside of spacing 3, toggle mechanism 5 alternates with spacing 3's top and is connected, toggle switch 6 sets up in one side of toggle mechanism 5, be convenient for through spacing 3 to toggle mechanism 5 alternate and carry on spacingly, also carry on spacingly to the rotation of countershaft 21, be convenient for extrude toggle mechanism 5 through centrifugal force through centrifugal extrusion mechanism 4, make toggle mechanism 5 can stir toggle switch 6, the alarm is through toggling switch 6 and external power source electric connection

Alarm, it is installed on installation casing 1, and the alarm passes through centrifugal alarm switch and external power source electric connection, and through the circular telegram of alarm, be convenient for warn the staff.

Centrifugal extrusion mechanism 4 includes connecting sleeve 41, connecting rod 42, first extrusion piece 43 and elastic support assembly, connecting sleeve 41 is fixed to be cup jointed with pivot 21, connecting rod 42 slides with connecting sleeve 41's top and alternates to be connected, first extrusion piece 43 fixed connection is in connecting rod 42's one end, elastic support assembly sets up in connecting rod 42's outside, elastic support assembly includes spring 44 and connection piece 45, the outside of connecting rod 42 is located to spring 44 movable sleeve, connection piece 45 fixed connection is in connecting rod 42's the other end, elastic support to connection piece 45 through spring 44, so that under the state that connecting sleeve 41 does not rotate, make the surface laminating of first extrusion piece 43 and connecting sleeve 41, can not contact with toggle mechanism 5, and through the elastic support of spring 44 to connection piece 45, also prevent connecting sleeve 41 when low-speed, first extrusion piece 43 is to toggle mechanism 5's centrifugal extrusion, only when the rotational speed is big to a certain speed, when centrifugal force is big to a certain degree, just can extrude second extrusion piece 53, the both sides of first extrusion piece 43 all are seted up there is the inclined plane, be convenient for rotate after certain degree, carry out extrusion piece 53 to the second extrusion piece, be convenient for remove the extrusion piece through first extrusion piece 42.

Toggle mechanism 5 includes montant 51, connecting plate 52, second extrusion piece 53 and stripper plate 54, connecting plate 52 fixed connection is in montant 51's bottom, second extrusion piece 53 fixed connection is in connecting plate 52's bottom, second extrusion piece 53 slides with spacing 3's top and alternates and is connected, stripper plate 54 fixed connection is in one side of montant 51, toggle mechanism 5 still includes antiskid cover 55 and presses piece 56, logical groove has been seted up on the installation casing 1, antiskid cover 55 is cup jointed with montant 51's top is fixed, antiskid cover 55 is laminated with the inner wall that leads to the groove each other, press piece 56 fixed connection in montant 51's top, inclined plane has been seted up to second extrusion piece 53's both sides, be convenient for first extrusion piece 43 to the extrusion of second extrusion piece 53 be convenient for drive stripper plate 54 through montant 51 and move up, make the upwards moving-up of stripper plate 54 can stir toggle switch 6, through the laminating between antiskid cover 55 and the logical groove inner wall, thereby prevent that 51 from being jacked up the back, move down at will, make montant 51's position more stable.

The utility model discloses theory of operation:

in use, through the rotation of worm wheel 7, the meshing between worm 2 and worm wheel 7 is reconciled, make the rotation of worm wheel 7, can drive worm 2 and rotate, go out power take-off, in the rotation of worm 2, drive pivot 21 and rotate in step, make connecting sleeve 41 follow pivot 21 and rotate in step, it rotates to be convenient for drive connecting rod 42 through connecting sleeve 41, first extrusion piece 43 is located the outside of connecting sleeve 41, when connecting sleeve 41 rotates, thereby first extrusion piece 43 receives centrifugal force, pull connecting rod 42, make connecting rod 42 pull connecting piece 45, make connecting piece 45 can extrude spring 44, when the rotational speed reaches certain rotational speed, when first extrusion piece 43 deviates connecting sleeve 41 axis to certain distance, first extrusion piece 43 can extrude the bottom of second extrusion piece 53, make connecting plate 52 drive montant 51 and carry out vertical motion, drive extrusion plate 54 and move up through montant 51, dial the handle of toggle switch 6 through extrusion plate 54, thereby make the alarm and external power supply toggle electric connection, alarm, to staff, make the warning, make staff carry out the meshing to prevent to overload between the worm wheel 7, prevent motor meshing or worm wheel 7.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.

Claims (7)

1. The utility model provides a take worm gear speed reducer machine of overload protection structure which characterized in that includes:

a mounting shell (1) is internally provided with a worm (2) in a rotating way;

the centrifugal type alarm switch is connected to one end of the worm (2), the centrifugal type alarm switch comprises a limiting frame (3), a centrifugal type extrusion mechanism (4), a toggle mechanism (5) and a toggle switch (6), the limiting frame (3) is fixedly installed at the bottom of the inner wall of the installation shell (1), the centrifugal type extrusion mechanism (4) is connected to one end of the worm (2), the centrifugal type extrusion mechanism (4) is arranged inside the limiting frame (3), the toggle mechanism (5) is connected with the top of the limiting frame (3) in an inserting mode, and the toggle switch (6) is arranged on one side of the toggle mechanism (5);

the alarm, it is installed on installation casing (1), the alarm passes through centrifugal alarm switch and external power source electric connection.

2. The worm and gear speed reducer with the overload protection structure as claimed in claim 1, wherein one end of the worm (2) is connected with a rotating shaft (21), the rotating shaft (21) is rotatably inserted and connected with the limiting frame (3), the rotating shaft (21) is matched with the centrifugal extrusion mechanism (4), the other end of the worm (2) is connected with a connecting shaft, and the connecting shaft is rotatably inserted and connected with the mounting shell (1).

3. The worm and gear speed reducer with the overload protection structure according to claim 1, wherein the centrifugal extrusion mechanism (4) includes a connecting sleeve (41), a connecting rod (42), a first extrusion block (43), and an elastic support component, the connecting sleeve (41) is fixedly sleeved with the rotating shaft (21), the connecting rod (42) is slidably inserted into the top of the connecting sleeve (41), the first extrusion block (43) is fixedly connected to one end of the connecting rod (42), and the elastic support component is disposed outside the connecting rod (42).

4. The worm and gear speed reducer with the overload protection structure as recited in claim 3, wherein the elastic support assembly comprises a spring (44) and a connecting piece (45), the spring (44) is movably sleeved outside the connecting rod (42), and the connecting piece (45) is fixedly connected to the other end of the connecting rod (42).

5. The worm and gear speed reducer with the overload protection structure as recited in claim 1, wherein the toggle mechanism (5) comprises a vertical rod (51), a connecting plate (52), a second extrusion block (53) and an extrusion plate (54), the connecting plate (52) is fixedly connected to the bottom end of the vertical rod (51), the second extrusion block (53) is fixedly connected to the bottom end of the connecting plate (52), the second extrusion block (53) is slidably inserted into the top of the limiting frame (3), and the extrusion plate (54) is fixedly connected to one side of the vertical rod (51).

6. The worm and gear speed reducer with the overload protection structure according to claim 1, wherein the toggle mechanism (5) further comprises an anti-slip sleeve (55) and a pressing block (56), the mounting housing (1) is provided with a through groove, the anti-slip sleeve (55) is fixedly sleeved with the top of the vertical rod (51), the anti-slip sleeve (55) is attached to the inner wall of the through groove, and the pressing block (56) is fixedly connected to the top end of the vertical rod (51).

7. The worm and gear speed reducer with the overload protection structure as claimed in claim 1, wherein the worm (2) is engaged with a worm wheel (7), a main shaft is inserted into the middle of the worm wheel (7), and the main shaft is rotatably inserted into the mounting housing (1).

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