CN202144902U

CN202144902U - Full-automatic secondary motion actuating mechanism

Info

Publication number: CN202144902U
Application number: CN201120281422U
Authority: CN
Inventors: 杨政委
Original assignee: Individual
Current assignee: Ningbo Dongling Plumb & Air-Conditioning Parts And Accessories Co Ltd
Priority date: 2011-08-04
Filing date: 2011-08-04
Publication date: 2012-02-15
Anticipated expiration: 2021-08-04

Abstract

The utility model discloses a full-automatic secondary motion actuating mechanism which comprises an encloser (4), an encloser cover, a spindle (9) and an automatic drive device used for driving the spindle (9) to rotate, wherein one end of the spindle (9) is connected with a blade connecting shaft arranged on a controlled valve body, the spindle (9) is provided with a primary torsional spring (19), a cam (16), a rotary wheel (1) and a secondary torsional spring (20) from top to bottom, the rotating direction of the primary torsional spring (19) is reverse to that of the secondary torsional spring (20), the lower end of the secondary torsional spring is fixed on a connecting plate, the upper end of the secondary torsional spring is fixed on the rotary wheel (1), the connecting plate (5) is fixed at the bottom in the encloser (4), the cam (16) and the primary torsional spring (19) are matched with a primary limit device, and the rotary wheel (1) and the secondary torsional spring (20) are matched with a secondary limit device. With the adoption of the full-automatic secondary motion actuating mechanism, a blade of a smoke-exhausting and fire-preventing valve can be automatically closed; and the full-automatic secondary motion actuating mechanism belongs to the field of mechanical equipment.

Description

The fully automatic secondary action actuating mechanism

Technical field

The utility model relates to a kind of smoke evacuation fire-closing valve fully automatic secondary action actuating mechanism that is installed in the building ventilation system.

Background technique

For the sake of security, in the ventilation system of general tall building smoke exhaust port is installed all, blade is housed on the smoke exhaust port, the coupling shaft of control blade oscillating links to each other with execution architecture, and originally blade is closed, in case breaking out of fire is opened the valve blade and conveniently discharged fume.If the temperature of cigarette surpasses uniform temperature (general 280 °), had fire in the cigarette, can encourage fire spreading as not stopping smoke evacuation, therefore have and need smoke exhaust port be closed.

There is a kind of actuator can realize opening valve blade and throttle down blade in the market; Be exactly our can discharging fume of saying at ordinary times and can frpf secondary action actuator; A utility model patent ZL200420037124.9 of inventor's design just; But this secondary action actuator only possesses the function of hand reset; Just this mechanism and smoke evacuation fire-closing valve be when being used in combination, need with hand go on the pushing executing mechanism main axis rotation so that torsion spring rotate and also make valve closing.When this actuator, be installed in the position higher position, manually-operable actuator resets to original state will seem very inconvenient.

The model utility content

The utility model technical problem to be solved is: providing a kind of can automatically reset, and has the smoke evacuation fire-closing valve fully automatic secondary action actuating mechanism that can discharge fume and can frpf secondary action function.

The utility model overcomes the above problems the technological scheme that is adopted: a kind of fully automatic secondary action actuating mechanism; It comprises case and case lid; It comprises that also an end is used to connect the main shaft of the blade coupling shaft on the controlled valve body; Main shaft is provided with torsion spring, cam, runner, secondary torsion spring from top to bottom, has two curve baths on the cam, and cam edge is provided with a semicircle short slot; The upper end of a torsion spring is fixed on the main shaft, and the lower end of a torsion spring is fixed on the runner; Described runner rotating sleeve is contained on the main shaft; Described runner upper surface is fixed with pin, and pin inserts in the wherein curve bath of cam; The lower end of secondary torsion spring is fixed on the connecting plate, and the upper end of secondary torsion spring is fixed on the runner; Connecting plate is fixed on the case inner bottom part; The sense of rotation of a described torsion spring and secondary torsion spring is opposite; Described cam and a torsion spring are combined with limit stoper No. one time, and described runner and secondary torsion spring are combined with the secondary limit stoper; Also comprise and be used for the automatic drive that drive main spindle is rotated.

Described automatic drive comprises the gear train of the gear on motor, retarder and the engagement main shaft.

A described limit stoper comprises electromagnet, fork, rocker; Rocker one end rotates and is arranged on the case, and the other end of rocker connects an end of fork, and rocker is provided with a cylinder roller that is used to cooperate the semicircle short slot of limit cam, and the other end of fork connects electromagnet.

Described secondary limit stoper comprises shift fork, declutch shift shaft, temperature sensor and shift fork torsion spring, and the middle part of shift fork is sleeved on the declutch shift shaft and can freely rotates, and an end of shift fork hangs on the mandrel of temperature sensor, and the other end withstands the protrusion position on the runner; Be set with the shift fork torsion spring on the described declutch shift shaft, an end of shift fork torsion spring inserts on the connecting plate, and the other end is fixed on the shift fork.

The beneficial effect of the utility model is: original in return actuator; All be to lean on the user to remove to pull main shaft to rotate with hand; Adopting motor and gear train to drive main shaft now rotates; Therefore make that also the utility model application area is wider, even be contained in eminence, this actuator very easily also can reset.

Description of drawings

Fig. 1 removes the plan view after case covers for the utility model.

Fig. 2 is the utility model phantom.

Fig. 3 is the utility model gear transmission unfolded drawing.

Fig. 4 is for the new temperature sensor of this practicality, type are dialled, runner combines schematic representation.

Among the figure, 1. runner, 2. shift fork, 3. base plate, 4. case, 5. connecting plate; 6. motor, 7. rocker, 8. roller, 9. main shaft, 10. handle, 11. temperature sensors; 12. declutch shift shaft, 13. shift fork torsion springs, 14. electromagnet, 15. screws, 16. cams, 16-1. curve bath; 16-2. semicircle short slot, 17. pins, 18. forks, 19. torsion springs, 20. secondary torsion springs, 21. gear trains.

Embodiment

In conjunction with Fig. 1, Fig. 2, Fig. 3, shown in Figure 4; A kind of fully automatic secondary action actuating mechanism; It comprises case 4 and case lid, and it comprises that also an end is used to connect the main shaft 9 of the blade coupling shaft on the controlled valve body, and main shaft 9 is provided with torsion spring 19, cam 16, runner 1, secondary torsion spring 20 from top to bottom; Have two curve bath 16-1 on the cam 16, cam 16 edges are provided with a semicircle short slot 16-2; Cam 16 is fixedly set on the main shaft 9, and the upper end of a torsion spring 19 is fixed on the main shaft 9, and the lower end of a torsion spring 19 is fixed on the runner 1; Described runner 1 rotating sleeve is contained on the main shaft 9; Described runner 1 upper surface is fixed with pin 17, and pin 17 inserts in the wherein curve bath 16-1 of cam 16; The lower end of secondary torsion spring 20 is fixed on the connecting plate 5, and the upper end of secondary torsion spring 20 is fixed on the runner 1; Connecting plate 5 is fixed on case 4 inner bottom parts.The sense of rotation of a described torsion spring 19 and secondary torsion spring 20 is opposite; Described cam 16 and a torsion spring 19 are combined with limit stoper No. one time, and described runner 1 is combined with the secondary limit stoper with secondary torsion spring 20; Also comprise and be used for the automatic drive that drive main spindle 9 is rotated.

Described automatic drive comprises the gear train 21 of the gear on motor 6, retarder and the engagement main shaft 9.

A described limit stoper comprises electromagnet 14, fork 18, rocker 7; Rocker 7 one ends rotate and are arranged on the case 4, and the other end of rocker 7 connects an end of fork 18, and rocker 7 is provided with a cylinder roller 8 that is used to cooperate limit cam 16 semicircle short slot 16-2, and the other end of fork 18 connects electromagnet 14.

Described secondary limit stoper comprises shift fork 2, declutch shift shaft 12, temperature sensor 11 and shift fork torsion spring 13; The middle part of shift fork 2 is sleeved on the declutch shift shaft 12 and can freely rotates; One end of shift fork 2 hangs on the mandrel of temperature sensor 11, and the other end withstands the protrusion position on the runner; Be set with shift fork torsion spring 13 on the described declutch shift shaft 12, an end of shift fork torsion spring 13 inserts on the connecting plate 5, and the other end is fixed on the shift fork 2.

The working principle of the utility model is following: the utility model in use; Actuator is installed on the smoke evacuation fire-protection valve; Blade coupling shaft with two screw smoke evacuation fire-protection valves on the handle 10; One end of shift fork 2 is hung on temperature sensor 11 mandrels, and shift fork 2 the other ends withstand the projection of runner 1, in conjunction with shown in Figure 4.When mechanism resets; Motor 6 energisings; Motor 6 drives main shaft 9 through gear train 21 and is rotated counterclockwise; The semicircle short slot 16-2 that rotates on the cam 16 blocks the roller 8 on the rocker 7, and this moment, the head of rocker 7 just in time was stuck on the small gap of fork 18, and actuator just drives the fire-protection valve of discharging fume reset (blade is closed) like this; During mechanism action; Can adopt to electromagnet 14 energisings or hand manual mode pulling fork 18 to be rotated counterclockwise, make rocker 7 heads break away from the small gap of fork 18, this moment, main shaft 9 turned clockwise under the twisting force of a torsion spring 19; Rotating to bending part on the runner 1 runs into screw 15 and is blocked and stop; The angle of main shaft 9 rotations is 90 degree, and actuator's drive smoke evacuation this moment fire-protection valve is opened, and plays the effect of smoke evacuation; When the temperature of discharging fume reached or surpass 280 ℃, temperature sensor 11 actions were in mandrel indentation temperature sensor 11 heads of temperature sensor 11; Shift fork 2 loses the drag effect of temperature sensor 11, and under shift fork torsion spring 13 twisting forces, shift fork 2 turns clockwise; Make the other end of shift fork 2 lose the drag effect to runner 1, under secondary torsion spring 20 twisting forces, runner 1 is rotated counterclockwise; Pin on the runner 1 drives cam 16; And then drive whole main shaft 9 and be rotated counterclockwise together, thereby the throttle down blade plays the frpf effect.

Claims

1. fully automatic secondary action actuating mechanism; It comprises case (4) and case lid; It comprises that also an end is used to connect the main shaft (9) of the blade coupling shaft on the controlled valve body; Main shaft (9) is provided with a torsion spring (19), cam (16), runner (1), secondary torsion spring (20) from top to bottom, has two curve baths (16-1) on the cam (16), and cam (16) edge is provided with a semicircle short slot (16-2); Cam (16) is fixedly set on the main shaft (9), and the upper end of a torsion spring (19) is fixed on the main shaft (9), and the lower end of a torsion spring (19) is fixed on the runner (1); Described runner (1) rotating sleeve is contained on the main shaft (9); Described runner (1) upper surface is fixed with pin (17), and pin (17) inserts in the wherein curve bath (16-1) of cam (16); The sense of rotation of a described torsion spring (19) and secondary torsion spring (20) is opposite; The lower end of secondary torsion spring is fixed on the connecting plate, and the upper end of secondary torsion spring (20) is fixed on the runner (1); Connecting plate (5) is fixed on case (4) inner bottom part; A described cam (16) and a torsion spring (19) are combined with limit stoper No. one time, and described runner (1) and secondary torsion spring (20) are combined with the secondary limit stoper; It is characterized in that: also comprise being used for the automatic drive that drive main spindle (9) is rotated.

2. fully automatic secondary action actuating mechanism according to claim 1 is characterized in that: described automatic drive comprises the gear train (21) of the gear on motor (6), retarder and the engagement main shaft (9).

3. fully automatic secondary action actuating mechanism according to claim 1 is characterized in that: a described limit stoper comprises electromagnet (14), fork (18), rocker (7); Rocker (7) one ends rotate and are arranged on the case (4); The other end of rocker (7) connects an end of fork (18); Rocker (7) is provided with a cylinder roller (8) that is used to cooperate the semicircle short slot of limit cam (16) (16-2), and the other end of fork (18) connects electromagnet (14).

4. fully automatic secondary action actuating mechanism according to claim 1; It is characterized in that: described secondary limit stoper comprises shift fork (2), declutch shift shaft (12), temperature sensor (11) and shift fork torsion spring (13); The middle part of shift fork (2) is sleeved on the declutch shift shaft (12) and can freely rotates; One end of shift fork (2) hangs on the mandrel of temperature sensor (11), and the other end withstands the protrusion position on the runner; Be set with shift fork torsion spring (13) on the described declutch shift shaft (12), an end of shift fork torsion spring (13) inserts on the connecting plate (5), and the other end is fixed on the shift fork (2).