CN2831569Y

CN2831569Y - Overload warning protector

Info

Publication number: CN2831569Y
Application number: CN 200520027408
Authority: CN
Inventors: 徐宏; 张谦
Original assignee: TIANJIN SPEED REDUCER CO Ltd
Current assignee: TIANJIN SPEED REDUCER CO Ltd
Priority date: 2005-09-20
Filing date: 2005-09-20
Publication date: 2006-10-25
Anticipated expiration: 2015-09-20

Abstract

The utility model relates to an overload warning protector comprises an output shaft and an input shaft, wherein the front end of the output shaft is provided with a circular groove which is sheathed and fixed with a spline shaft, the front end head of the spline shaft is provided with an outer boss, and the outer wall of the back end of the spline shaft is provided with a spline groove, the front end of the spline shaft is sheathed with a fixed fluted disc and the back end of the spline shaft is sheathed with a movable fluted disc and a support disc which are provided with spline holes. The back end of the movable fluted disc is provided with a flange, the opposing end surfaces of the movable fluted disc and the support disc are uniformly distributed with a plurality of pairs of corresponding circular holes and springs are arranged in the holes. The back end head of the spline shaft is screwed with a cushion ring and a lock nut. The front end of the input shaft is inserted into the circular groove of the output shaft, and a flat key is arranged between the input shaft and the output shaft. A position near the back end surface of the flange on the movable fluted disc is provided with an alarming limit switch and a protective limit switch. The utility model is also provided with an electrical control gear composed of a transformer and two relays which are respectively connected with the two limit switches. The utility model has the advantages of simple structure and strong reliability, is suitable for a shafting transmission system and satisfies the requirement of users to the economy and the reliability of products.

Description

Overload alarming protector

Technical field

The utility model belongs to the device of prevention power drive system overload, particularly relates to a kind of overload alarming protector.

Background technology

In power drive system; axle by connection device transferring power is that transmission is the widely used kind of drive of power drive system; in the power transmission process; if changing suddenly, operating mode cause load to strengthen suddenly; then can cause various accidents; at present; usually adopt when engineering design, to improve the setting of coefficient of safety or method such as overcurrent protection is set and solve; but the setting that improves coefficient of safety must increase type; cost of equipment is increased, adopt overcurrent protection then can owing to mains supply when unstable current fluctuation big, cause signal thick; poor reliability, so they all can not satisfy the requirement of user to product reliability and economy well.

Summary of the invention

The utility model provides a kind of simple in structure for solving the technical problem that exists in the known technology, good reliability, electromechanical be applicable to that axle is the overload alarming protector of transmission.

The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:

A kind of overload alarming protector; include output shaft and power shaft; on the termination of output shaft, be provided with flange; have circular groove on the flange; to be fixed with the front end outer wall be that Guang Bi rear end outer wall has spline to suit on power shaft; design has the backstop that is raised in outer wall on the termination of front end; the termination of rear end is provided with the sleeve shaped splined shaft of pin thread; the internal diameter that circular groove on its front end external diameter and the output shaft termination is housed at the front end sleeve of splined shaft matches; the rear end has flange and is evenly equipped with the fixed tooth disk of tooth in the flange rear end; be set with active toothed disk and the supporting disk that has splined hole in the rear end that has spline of splined shaft; be provided with the tooth that is meshed with tooth on the fixed tooth disk at the front end of active toothed disk; the rear end is provided with flange; on the opposing end faces of active toothed disk and supporting disk, be evenly equipped with several to corresponding circular hole; the spring that makes active toothed disk and supporting disk keep certain interval and pressure is housed in the circular hole; packing ring and locknut on the follower head of splined shaft, have been screwed; suit is fixed with splined shaft and is fixed with fixed tooth disk at the splined shaft suit; its front end of power shaft behind active toothed disk and the supporting disk is inserted in the circular groove of output shaft front end and flat key is housed between them; be provided with roller sliding axle type alarm limit bit switch and protection limit switch at rear end face place near the flange on the active toothed disk; it is fixed on respectively on the fixing point adjacent with this device; it leaves certain interval as the roller of touch part and the rear end face of flange; wherein the gap between the rear end face of the roller sliding axle of alarm limit bit switch and flange is less than the gap between the rear end face of the roller sliding axle of protecting limit switch and flange; this device also is provided with by transformer and two electrical control gears that relay is formed, and its relay is connected with two limit switches respectively.

The utility model can also be taked following technical measures:

Described alarm limit bit switch and protection limit switch by holder, be inserted into axle sleeve on the holder, in the axle sleeve of packing into spring, as packing in the axle sleeve and have at the rear end outer wall that vertical guide groove front end is equipped with the sliding axle of roller, contact and the hold-down nut that is contained in the guide finger on the axle sleeve wall and is located at the rear end formed in the rear end of contact.

Advantage and the good effect that the utlity model has are: simple in structure, economical and practical, and under the situation of the setting that does not improve coefficient of safety, promptly needn't increase under the situation of type and just can avoid owing to load strengthens the various accidents that cause suddenly; Since this device adopted fixed tooth disk and in axial sliding active toothed disk as the middleware transfer torque, and adopt can two limit switches that mechanical variables is transformed into the signal of telecommunication be provided and report to the police and protection, it can send alarm signal when causing active toothed disk to move axially because of overload, operating personnel are intervened, automatic or manual reduces live load, as it is invalid to fall lotus, active toothed disk continues to strengthen mobile, then can the trigger protection limit switch, electrical control gear is cut off the electricity supply, avoid the generation of accident, thereby good reliability; The design of electromechanical integration is applicable to that various axles are drive system, has satisfied the requirement of user to product economy and reliability.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the electrical connection diagram of limit switch of the present utility model.

Label among the figure is respectively: 1-output shaft; 2-bolt; 3-back-up ring; 4-flat key; 5-splined shaft; 6-fixed tooth disk, 7-active toothed disk; 8-spring; 9-supporting disk; 10-locknut; 11-power shaft; 12-roller; 13-sliding axle; 14-axle sleeve; 15-guide finger; 16-spring; 17-backstop; 18-key; 19-protection limit switch; 20-alarm limit bit switch; 21-holder; 22-relay I; 23-relay II.

Embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

See also Fig. 1; overload alarming protector; include output shaft 1 and power shaft 11; on the termination of output shaft, be provided with flange; have circular groove on the flange; on power shaft, be set with sleeve shaped splined shaft 5; its front end outer wall is that Guang Bi rear end outer wall has spline; design has the backstop 17 that is raised in outer wall on the termination of front end; the termination of rear end is provided with pin thread; key 18 is housed between power shaft and splined shaft; on the termination of the front end of splined shaft, be equiped with back-up ring 3; be coated with bolt 2 on the back-up ring; the lower end of bolt is screwed on the termination of power shaft; splined shaft is by back-up ring and being bolted on the power shaft; front end sleeve at splined shaft is equipped with fixed tooth disk 6; the internal diameter of the circular groove on its front end external diameter and the output shaft termination matches; the rear end has flange and is evenly equipped with stepped tooth in the flange rear end; be set with the active toothed disk 7 and the supporting disk 6 that have the splined hole that matches with splined hole on the splined shaft in the rear end that has spline of splined shaft; be provided with the tooth that is meshed with tooth on the fixed tooth disk at the front end of active toothed disk; the rear end is provided with flange; on the opposing end faces of active toothed disk and supporting disk, be evenly equipped with 5 pairs of corresponding circular holes; the spring 8 that makes active toothed disk and supporting disk keep certain interval and pressure is housed in the circular hole; packing ring and locknut 10 on the follower head of splined shaft, have been screwed; suit is fixed with splined shaft and is fixed with fixed tooth disk at the splined shaft suit; its front end of power shaft behind active toothed disk and the supporting disk is inserted in the circular groove of output shaft front end and flat key 4 is housed between them; so that output shaft 1 and power shaft 11 link together; be relatively set with at rear end face place near the flange on the active toothed disk roller sliding axle type alarm limit bit switch 20 and and the protection limit switch 19; it is fixed on the fixing point adjacent with this device by support respectively; limit switch is by holder 21; be inserted into the axle sleeve 14 on the holder; pack into spring 16 in the axle sleeve; as packing in the axle sleeve and have the sliding axle 13 that vertical guide groove front end is equipped with roller 12 in the rear end of lifting one's head at the rear end outer wall; the contact and the hold-down nut composition that are contained in the guide finger 15 on the axle sleeve wall and are located at the rear end; guide finger is deep in vertical guide groove of sliding axle; it leaves certain interval as the roller sliding axle of contact and the rear end face of the flange on the active toothed disk; wherein the gap (H1) between the rear end face of the roller sliding axle of alarm limit bit switch and flange is less than the gap (H2) between the rear end face of the roller sliding axle of protecting limit switch and flange; this device also is provided with by transformer and relay I22; the electrical control gear that relay II23 forms; it is contained in the regulator cubicle; make the scene be in safe operating voltage state; two relay is connected with two limit switches respectively, and its electrical connection diagram is seen Fig. 2.

Long for guaranteeing its reliable operation life-span, the key position of present embodiment has carried out strengthening design, active toothed disk and fixed tooth disk all adopt high duty alloy material and nitridation process to strengthen resistance to wear, because roller is to roll to contact with active toothed disk, roller has adopted the bearing steel integral quenching to handle, and relying on the support of slinky spring as sliding axle, friction reduced when roller was contacted with active toothed disk.Spring loaded on the fluted disc adopts special high-quality spring, and its fatigue resistance is big, and distortion is uniform and stable after the load.This device is applicable to coaxial connection, rotating speed＜500rpm, and torque＜400Nm, protection is provided with scope general desirable 1.5～2 with the torque ratio of reporting to the police.

Operation principle of the present utility model is: be in dynamic equilibrium state during work, after customer equipment load changes, its change in torque passes to flat key and fixed tooth disk successively by output shaft, fixed tooth disk passes to active toothed disk with moment of torsion again by flank engagement, because splined shaft is axially fixed on the power shaft by bolt and back-up ring, and supporting disk is axially fixed on the splined shaft by locknut, so when the axial thrust load of two fluted disc engagement generations is not equal to the thrust of all springs that calculate by designing requirement on the active toothed disk, active toothed disk will move axially in the splined shaft upper edge, up to balance again, if when the amount of movement of active toothed disk reached the gap width H1 that the alarm limit bit switch sets, this device sent alarm signal.But automatic or manual reduces live load after the warning; at this moment moment of torsion reduces thereupon; active toothed disk is return; alarm signal is closed; as it is invalid to fall lotus; moment of torsion continues to increase; active toothed disk will axially be pushed down the roller on the alarm limit bit switch, and roller rotates and drive sliding axle and active toothed disk is mobile in the same way, keeps in touch; keep warning; when the amount of movement of active toothed disk reached the gap width H2 that the protection limit switch sets, the alarm limit bit switch sent guard signal, the actuating of relay of this signal linkage control electric device; the generation of accident is avoided in instant outage shutdown.

Claims

1. overload alarming protector; include output shaft and power shaft; it is characterized in that: on the termination of output shaft, be provided with flange; have circular groove on the flange; to be fixed with the front end outer wall be that Guang Bi rear end outer wall has spline to suit on power shaft; design has the backstop that is raised in outer wall on the termination of front end; the termination of rear end is provided with the sleeve shaped splined shaft of pin thread; the internal diameter that circular groove on its front end external diameter and the output shaft termination is housed at the front end sleeve of splined shaft matches; the rear end has flange and is evenly equipped with the fixed tooth disk of tooth in the flange rear end; be set with active toothed disk and the supporting disk that has splined hole in the rear end that has spline of splined shaft; be provided with the tooth that is meshed with tooth on the fixed tooth disk at the front end of active toothed disk; the rear end is provided with flange; on the opposing end faces of active toothed disk and supporting disk, be evenly equipped with several to corresponding circular hole; the spring that makes active toothed disk and supporting disk keep certain interval and pressure is housed in the circular hole; packing ring and locknut on the follower head of splined shaft, have been screwed; suit is fixed with splined shaft and is fixed with fixed tooth disk at the splined shaft suit; its front end of power shaft behind active toothed disk and the supporting disk is inserted in the circular groove of output shaft front end and flat key is housed between them; be provided with alarm limit bit switch and protection limit switch at rear end face place near the flange on the active toothed disk; it is fixed on respectively on the fixing point adjacent with this device; the rear end face of its contact and flange leaves certain interval; wherein the gap between the rear end face of the contact of alarm limit bit switch and flange is less than the gap between the rear end face of the contact of protecting limit switch and flange; this device also is provided with by transformer and two electrical control gears that relay is formed, and its relay is connected with two limit switches respectively.

2. overload alarming protector according to claim 1 is characterized in that: described alarm limit bit switch and protection limit switch by holder, be inserted into axle sleeve on the holder, in the axle sleeve of packing into spring, as packing in the axle sleeve and have at the rear end outer wall that vertical guide groove front end is equipped with the sliding axle of roller, contact and the hold-down nut that is contained in the guide finger on the axle sleeve wall and is located at the rear end formed in the rear end of contact.