CN210265735U

CN210265735U - Safety protection device for rotary filter screen speed reducer

Info

Publication number: CN210265735U
Application number: CN201921141654.0U
Authority: CN
Inventors: 胡昌; 张厚东; 李鹏; 石烨
Original assignee: Xinyang Datang Environmental Protection Equipment Technology Co Ltd
Current assignee: Xinyang Datang Environmental Protection Equipment Technology Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-04-07
Anticipated expiration: 2029-07-19

Abstract

The utility model discloses a rotary filter screen speed reducer safety arrangement, include and establish on first sleeve and with first sleeve the second sleeve that adopts safe shearing pin joint with speed reducer power output shaft fixed connection's first sleeve and cover, the fixed spring plunger that is provided with along first sleeve radial extension in first sleeve outside, the spring plunger outside is provided with spacing clamp plate, and spacing clamp plate's free end is located the spring plunger outside and compresses tightly the plunger, and first sleeve lower extreme is provided with contact switch.

Description

Safety protection device for rotary filter screen speed reducer

Technical Field

The utility model relates to a motor overload protection device field especially relates to a rotary filter screen speed reducer safety arrangement.

Background

The speed reducer is a power transmission device, the application is very extensive in the life, the commonly used all kinds of gear speed reducers and worm speed reducers that include, but present multiple speed reducer product all does not possess the overload protection function, environmental protection is closely relevant with us at present, a large amount of environmental protection equipment come into place at the same time, rotatory filter screen is the essential drainage equipment of heat power factory earth's surface water intaking in the runner, rotatory filter screen adopts the cycloidal pin gear speed reducer of big reduction ratio more, the speed reducer is responsible for providing power for the speed reducer, mostly do not possess the overload protection function, then it is especially necessary to develop a safety arrangement to rotatory filter screen speed reducer.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at overcoming the speed reducer and do not possess overload protection's function and develop a speed reducer safety arrangement.

The utility model discloses the technical scheme who adopts as follows:

a safety protection device of a rotary filter screen speed reducer is installed on a power output shaft of the speed reducer and comprises a first sleeve, the first sleeve is fixedly sleeved on the power output shaft of the speed reducer, a first flanging is arranged at one end, far away from the speed reducer, of the first sleeve, a second sleeve is coaxially sleeved on the first sleeve in a rotating mode, a second flanging is arranged at one end, far away from the speed reducer, of the second sleeve, a transmission mechanism is arranged on the second sleeve and comprises teeth uniformly arranged along the circumferential direction of the second sleeve, the second flanging and the first flanging are fixedly connected through a shearing pin, a spring plunger is fixedly arranged on the outer end face of the first flanging, the axis of the spring plunger extends along the radial direction of the first flanging, a limiting pressure plate is fixedly connected on the second flanging, the free end of the limiting pressure plate is located on the outer side of the spring plunger and compresses the spring plunger, and, when the speed reducer is overloaded, the shearing pin is broken, the spring plunger and the limiting pressing plate are dislocated, the spring plunger extends, and the motion trail of the extended spring plunger is intersected with the contact switch.

Preferably, the transmission mechanisms are uniformly distributed in two groups along the axis of the second sleeve.

Preferably, the free end of the spring plunger is coaxially fixed and sleeved with a top sleeve.

Preferably, the spring plunger is fixed on the outer side face of the first flanging through threaded connection.

Preferably, there are at least two sets of shear pins.

Has the advantages that: the utility model discloses utilize and cut pin junction output sprocket dish and first sleeve, when transshipping, cut the pin fracture, cut off the power connection between rotary filter screen and the speed reducer, after cutting the pin fracture, spring plunger breaks away from the dislocation of limit clamp plate, and the plunger movement track after the extension is crossing with contact switch, makes the speed reducer stall.

Drawings

Fig. 1 is the structure schematic diagram of the safety protection device of the rotary screen speed reducer of the utility model.

Detailed Description

The invention will be further described with reference to specific embodiments below: as shown in fig. 1: a safety protection device of a rotary filter screen speed reducer comprises a first sleeve 1, wherein the first sleeve 1 is fixedly sleeved on a power output shaft 2 of the speed reducer, one end, far away from the speed reducer, of the first sleeve 1 is coaxially provided with a first flange 1-1, the first sleeve 1 is coaxially sleeved with a second sleeve 3 in a rotating mode, the second sleeve 3 is evenly provided with two groups of transmission mechanisms along the axial direction, each group of transmission mechanisms comprises teeth 4 which are evenly distributed in the circumferential direction around the second sleeve 3, the teeth 4 and the second sleeve 3 jointly form a chain disc, one end, far away from the speed reducer, of the second sleeve 3 is provided with a second flange 3-1, and the second flange 3-1 is fixedly connected with the first flange 1-1 through at least two shearing pins 5.

The outer side end face of the first flanging 1-1 is fixedly provided with a first nut 6, the axis of the first nut 6 extends along the radial direction of the first flanging 1-1, the first nut 6 is in threaded connection with a spring plunger 7, the spring plunger 7 is the prior art, details are not repeated here, the first nut is in threaded connection with the spring plunger 7, the position of the spring plunger 7 can be adjusted by rotating the spring plunger 7 through threaded connection, the free end of the spring plunger 7 is fixedly sleeved with a top sleeve 8, the second flanging 3-1 is detachably connected with a limit pressure plate 9 through a bolt, the free end of the limit pressure plate 9 is positioned outside the top sleeve 8 and tightly presses the top sleeve 8, the contact area between the spring plunger 7 and the limit pressure plate 9 is increased through the arrangement of the top sleeve 8, a contact switch 10 is fixedly arranged under the spring plunger 7, the contact switch 10 is fixedly arranged on a base 12 of a speed reducer 11, and when normal work is not overloaded, the movement track of the spring plunger 7 is separated from the contact switch 10, when the speed reducer is overloaded, the shearing pin 5 is broken, the spring plunger 7 is dislocated with the limiting pressing plate 9, the spring plunger 7 extends, and the movement track of the extended spring plunger 7 is intersected with the contact switch 10.

The specific working process is as follows: when the normal work is not overloaded, the motion trail of the spring plunger 7 is separated from the contact switch 10, when the rotary filter screen is clamped or the load is overlarge, the speed reducer is overloaded, the shearing force borne by the shearing pin 5 for transmitting power is increased, after the shearing force exceeds the shearing strength, the shearing pin 5 is cut off, the speed reducer idles to prevent overload, after the shearing pin 5 is cut off, the spring plunger 7 rotates along with the first sleeve 1, the spring plunger 7 is dislocated with the limiting pressing plate 9, then the spring plunger 7 extends, the motion trail of the extended spring plunger 7 is crossed with the contact switch 10, the contact switch 10 acts, and the speed reducer stops running.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. Rotatory filter screen speed reducer safety arrangement, the device install on speed reducer power output shaft, its characterized in that: comprises a first sleeve, the first sleeve is fixedly sleeved on a power output shaft of a speed reducer, a first flanging is arranged at one end of the first sleeve, which is far away from the speed reducer, a second sleeve is coaxially sleeved on the first sleeve in a rotating manner, a second flanging is arranged at one end of the second sleeve, which is far away from the speed reducer, a transmission mechanism is arranged on the second sleeve, the transmission mechanism comprises teeth uniformly arranged along the circumferential direction of the second sleeve, the second flanging is fixedly connected with the first flanging through a shearing pin, a spring plunger is fixedly arranged on the outer side end face of the first flanging, the axis of the spring plunger extends along the radial direction of the first flanging, a limiting pressure plate is fixedly connected on the second flanging, the free end of the limiting pressure plate is positioned outside the spring plunger and compresses the spring plunger, a contact switch is fixedly arranged right below the spring plunger, when the normal work is not overloaded, the motion track of the spring, when the speed reducer is overloaded, the shearing pin is broken, the spring plunger piston and the limiting pressing plate are dislocated, the spring plunger piston extends, and the motion trail of the extended spring plunger piston is intersected with the contact switch.

2. The rotary screen reducer safety protection device of claim 1, characterized in that: two groups of transmission mechanisms are uniformly distributed along the axis of the second sleeve.

3. The rotary screen reducer safety protection device of claim 1, characterized in that: the free end of the spring plunger is coaxially fixed with a sleeve in a fixed way.

4. The rotary screen reducer safety protection device of claim 1, characterized in that: the spring plunger is fixed on the outer side face of the first flanging through threaded connection.

5. The rotary screen reducer safety protection device of claim 1, characterized in that: at least two groups of shear pins are arranged.