CN2376497Y - Non-equal speed running mechanism for car road barricade lever - Google Patents

Abstract

The utility model relates to a non-equal speed running mechanism for a car road barricade brake lever, which comprises a machine frame 10, a motor 20, a worm wheel speed reducer 30, and a fixing lever of a brake lever 40. The utility model has improved points that a crank connecting lever mechanism 50 is arranged between the worm wheel speed reducer and the fixing lever of a brake lever; the crank connecting lever mechanism is movably connected by a first crank 51, a second crank 52, and a connecting lever 53, wherein, the first crank is connected with a worm wheel 32 through a clutch 60, and the second crank is connected with a balancing spring component 70. The utility model can cause the operation speed at the time that the brake lever is close to a top dead point and a horizontal dead point to be reduced to zero in order to overcome and eliminate inertia at the time that the brake lever reaches the terminal point and vibration and impact caused by the inertia, and operating performance and safety can be increased.

Description

The non-constant speed traveling mechanism of automobile restrictor bar

The utility model relates to a kind of traveling mechanism of automobile restrictor bar, specifically relates to a kind of non-constant speed traveling mechanism of automobile restrictor bar.

In the occasion that automobile is managed or charges, locate to be equipped with banister as parking lot, access, residential quarters etc. at present, banister is let pass by the control vehicle that rises and falls of restrictor bar, and rising and falling of restrictor bar then controlled by traveling mechanism.Existing restrictor bar traveling mechanism all is to reach the restrictor bar that links to each other with reducer output axle by motor and the worm reducer that is attached thereto to constitute basically, because restrictor bar directly links to each other with reducing gear, thus the speed of rising and falling of restrictor bar also just the rotating speed with the reducing gear output shaft is identical.At the uniform velocity the rising and falling of restrictor bar will stop it suddenly under fast speeds, bigger inertia when top dead centre and lower dead center, this will make restrictor bar produce bigger vibration, when lower dead center, will produce bigger downward impact force especially, if misoperation, this downward impact force will injure vehicle and personnel.

The purpose of this utility model is to adapt to the objective requirement of restrictor bar operation and a kind of non-constant speed traveling mechanism of automobile restrictor bar is provided, so that the inertia when eliminating restrictor bar and reaching home and by the impact force of a little generations improves runnability and safety.

For achieving the above object, the utility model provides a kind of non-constant speed traveling mechanism of automobile restrictor bar, this mechanism comprises frame 10, be loaded on the motor 20 on the frame, worm reducer 30 that is attached thereto and restrictor bar fixed bar 40, improvement of the present utility model is also to be equipped with a crank-link mechanism 50 between worm reducer and restrictor bar fixed bar, this crank-link mechanism is flexibly connected with connecting rod 53 by first crank 51 and second crank 52 and forms, wherein the crank axle 511 of first crank links to each other with worm gear 32 by clutch 60, crank axle 521 1 ends and the restrictor bar fixed bar 40 of second crank are affixed, the other end is loaded on the frame 10 and to hang arm 71 affixed with spring, spring is hung on the arm the first spring connecting rod 72 is housed, two balancing springs 75 are housed being connected with on the pull bar 73 that is fixed on the frame between the second spring connecting rod, 74, the first spring connecting rods and the second spring connecting rod.Above-mentioned crank-link mechanism 50 is when operation, angle will constantly change between crank and connecting rod, when second crank is spent (this moment, restrictor bar was near vertical stop) with the angle between horizon near zero degree (this moment, restrictor bar was near horizontal stop) or 90, it is minimum that the restrictor bar speed of service reaches, when 45 spend, then reach maximum, so this mechanism can make the restrictor bar traveling mechanism move under non-constant speed state.

Bearing 55,56,54,76 is equipped with at the last lower shaft hole place of the two ends of described connecting rod 53 and frame biside plate, is used for the supporting of each crank axle.

Crank axle 511 front ends of described first crank have an endoporus 5111, be right after on the axis body of endoporus and have a keyway 5112, and on the shaft hole inner wall of the worm gear 31 that links to each other with above-mentioned crank axle, also have and the corresponding keyway 311 of described keyway, be used for matching with clutch 60.

Described clutch 60 is the eccentric clutches of a kind of key formula, it comprise revolve 61, key 62 and spring 63, what wherein revolve revolves 5111 li of the endoporus that holding arms 611 inserts crank axle 511 front ends of first crank, and the terrace 6111 of its end places on the step 621 of key 62 front portions, with the sink-float of operating key; Key 62 is mobilizable keys, and it is contained in the keyway 5112 on the crank axle 511, and spring 63 is equipped with in its underpart, and its left end end links to each other with crank axle 511 with screw 64.Above-mentioned clutch is used for making under power-off condition crank-link mechanism and deceleration to be separated, so that use manually-operated.

As shown from the above technical solution, the utility model has been realized the non-constant speed operation of automobile restrictor bar with comparatively simple mechanism, make the automobile restrictor bar the different speeds of service be arranged at diverse location, particularly the time near top dead centre and horizontal stop, its speed of service gradually slows to zero then, so just overcome and eliminated inertia and consequent vibration and impact force when restrictor bar is reached home, improved runnability and safety.The utility model also considers power-off condition and is provided with the eccentric clutch of key formula, and this clutch volume is little and be built in the axle, need not attached outward other member, and can indefinite direction operate, thereby have economical with materials, simple to operate, be difficult for error, advantages such as easy production.The utility model integral body has rational in infrastructure, reliable, advantage such as also can use under power-off condition.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the utility model schematic perspective view.

Fig. 2 is the utility model exploded sketch.

Fig. 3 is clutch and reducer released state schematic diagram.

Fig. 4 is clutch and reducer bonding state schematic diagram.

Fig. 5 is restrictor bar crank-link mechanism running status schematic diagram when being in horizontal stop.

Fig. 6 is restrictor bar crank-link mechanism running status schematic diagram when being in vertical stop.

Fig. 7 is restrictor bar crank-link mechanism running status schematic diagram when being in 45 °.

As shown in Figure 1 and Figure 2, the utility model comprises frame 10, motor 20, worm reducer 30, restrictor bar fixed bar 40, above-mentioned member is similar to existing restrictor bar traveling mechanism, improvement of the present utility model is, a crank-link mechanism 50 also is housed between worm reducer and restrictor bar fixed bar, and is provided with clutch 60 and balance spring assembly 70.Referring to Fig. 2, motor 20 is fixed in the top of frame 10, motor lower portion is equipped with the worm reducer 30 that is attached thereto, with reference to figure 3, Fig. 4, worm reducer is made up of worm screw 31 and worm gear 32, and wherein worm gear is supported on the frame by two bearings 54, and there is an axis hole 321 at its center, have keyway 322 on the shaft hole inner wall, be used for matching with clutch 60.Described crank-link mechanism 50 is contained between worm reducer and the restrictor bar fixed bar, this mechanism is flexibly connected with connecting rod 53 by first crank 51 and second crank 52 and forms, two cranks are met at right angles to weld by crank axle 511,521 and crank arm 512,522 and fix, wherein the crank axle 511 of first crank passes worm gear axis hole 321, its front end has an endoporus 5111, being used for clutches revolves 61, be right after on the axis body of endoporus and have a rectangle keyway 5112, key 62, the first cranks are housed in it to link to each other with worm gear 31 by key 62.Movable end end one side of the crank arm 512 of first crank has a short column 5121, this short column be contained in connecting rod 53 bearing at end 55 and be connected and form first moving point, the other end of connecting rod 53 also is equipped with a bearing 56, and connecting rod is connected to form second moving point with second crank arm, 522 usefulness with above-mentioned same method.Crank axle 521 1 ends of described second crank and 40 welding of restrictor bar fixed bar are fixing, and the other end passes bearing 76 and the spring extension arm 71 that is contained on the frame 10 and is supported on the frame 10, and it is affixed that it and spring are hung 71 welding of arm.It is one of balancing spring assembly 70 that this spring is hung arm, and balanced component also comprises the first spring connecting rod 72, the second spring connecting rod 74, pull bar 73 and balancing spring 75.Wherein the first spring connecting rod 72 is contained on the spring extension arm by bearing, on the pull bar 73 that is fixed on the frame, be welded with the second spring connecting rod 74, between the first spring connecting rod and the second spring connecting rod two balancing springs 75 are housed, balancing spring is used for the active force of restrictor bar is cushioned and balance.Above-mentioned crank-link mechanism is a reducing gear, its operating principle is shown in Fig. 5～7, when reducer rotates, just driving crank-link mechanism and restrictor bar rotates, in this process, angle between each member of crank-link mechanism is constantly changing, with regard to the angle between second crank 52 and horizon, (see figure 5) when restrictor bar moves near horizontal stop, angle between second crank and horizon trends towards zero, first crank and connecting rod are in same straight line, and this moment, the speed of restrictor bar also went to zero; When restrictor bar by horizontal stop during to the operation of vertical stop, the angle of its speed between second crank and horizon is 45 to reach maximum (see figure 6) when spending.When restrictor bar moved near vertical stop, the angle between second crank and horizon trended towards 90 degree (see figure 7)s, and first crank overlaps with connecting rod, and the speed of restrictor bar also trends towards zero at this moment.When restrictor bar was in above-mentioned two stops, even formed first moving point of first crank and connecting rod has certain amplitude of fluctuation, the swing of restrictor bar was also very small, and this has just illustrated that this crank-link mechanism has good deceleration effect.Described clutch 60 is the eccentric clutches of a kind of key formula, it comprise revolve 61, key 62 and spring 63, wherein revolve by revolve handle 612 and with it the holding arms 611 that revolves of one constitute, revolve 5111 li of the endoporus that holding arms 611 inserts crank axle 511 front ends of first crank, its end cuts out a plane, form a step-like terrace 6111, this terrace places on the step 621 of key 62 front portions, with the sink-float of operating key.Key 62 is mobilizable keys, its front end bottom have one with revolve the step 621 that front end terrace 6111 is matched, revolve front end terrace part promptly placed on this step.This key is contained in the keyway 5112 on the crank axle 511, and its left end end links to each other with crank axle 511 with screw 64, and it can be around this tie point rotation.Can upspring and enter in the keyway 322 on the inwall of worm-wheel shaft hole for the front end that makes key, have a spring eye, spring 63 is housed in it in the bottom of key and the corresponding site on the crank axle keyway.This clutch is to come the sinking of operating key 62 and bounce to reach the clutch purpose by above-mentioned rotation of revolving 61.Referring to Fig. 3, when clockwise or inhour rotate and revolve 61 the time, its terrace 6111 that revolves the holding arms end is gone to the top, in rotation process, the semi-circular portions of its end is pressed in key 62 front end steps 621 places, and key is sunk down in the keyway 5112, and this moment, crank axle 511 was in released state with worm gear 32, both can rotate relatively, clutch be in from state; Referring to Fig. 4, when revolving when rotating 180 °, revolve and the terrace 6111 of end is gone to the bottom and key 62 front end steps 621 fit, key 62 front ends are subjected to spring 63 effects and pop up, and enter in the keyway 322 on worm gear 32 shaft hole inner walls, this moment, crank axle 511 was in bonding state with worm gear 32, and worm gear can drive crank axle and rotate simultaneously, restrictor bar can normally move under driving mechanism drives, and clutch is in the state that closes.Above-mentioned clutch mainly uses under powering-off state, and positive and negative can the operation.After outage, driving mechanism can't turn round, and restrictor bar need manually come folding.In the case, turn and revolve handle, crank axle is separated with worm gear 32, promptly clutch is in released state, and can use manually-operated restrictor bar traveling mechanism this moment, makes it to open or close.

Claims (4)

1, a kind of non-constant speed traveling mechanism of automobile restrictor bar, comprise frame (10), be loaded on the motor (20) on the frame, worm reducer that is attached thereto (30) and restrictor bar fixed bar (40), it is characterized in that between worm reducer and restrictor bar fixed bar, also being equipped with a crank-link mechanism (50), this crank-link mechanism is flexibly connected with connecting rod (53) by first crank (51) and second crank (52) and forms, wherein the crank axle of first crank (511) links to each other with worm gear (32) by clutch (60), crank axle (521) one ends and the restrictor bar fixed bar (40) of second crank are affixed, the frame (10) that is loaded on the other end goes up and is affixed with spring extension arm (71), spring is hung on the arm the first spring connecting rod (72) is housed, on the pull bar (73) that is fixed on the frame, be connected with the second spring connecting rod (74), between the first spring connecting rod and the second spring connecting rod two balancing springs (75) be housed.

2, the non-constant speed traveling mechanism of automobile restrictor bar according to claim 1 is characterized in that the two ends of described connecting rod (53) and the last lower shaft hole place of frame biside plate be equipped with bearing (55), (56), (54), (76).

3, the non-constant speed traveling mechanism of automobile restrictor bar according to claim 1, crank axle (511) front end that it is characterized in that first crank has an endoporus (5111), be right after on the axis body of endoporus and have a keyway (5112), and on the shaft hole inner wall of the worm gear (31) that links to each other with above-mentioned crank axle, also have and the corresponding keyway of described keyway (311).

4, the non-constant speed traveling mechanism of automobile restrictor bar according to claim 1, it is characterized in that described clutch (60) is the eccentric clutch of a kind of key formula, it comprises revolves (61), key (62) and spring (63), wherein revolve endoporus (5111) lining that holding arms (611) inserts crank axle (511) front end of first crank of revolving of handle, the terrace of its end (6111) places on the anterior step (621) of key (62), with the sink-float of operating key; Key (62) is a mobilizable key, and it is contained in the keyway (5112) on the crank axle (511), and spring (63) is equipped with in its underpart, and its left end end links to each other with crank axle (511) with screw (64).

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