CN205257714U - Subtract two -way automatic speed -limiting system of stroke - Google Patents
Subtract two -way automatic speed -limiting system of stroke Download PDFInfo
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- CN205257714U CN205257714U CN201520824150.4U CN201520824150U CN205257714U CN 205257714 U CN205257714 U CN 205257714U CN 201520824150 U CN201520824150 U CN 201520824150U CN 205257714 U CN205257714 U CN 205257714U
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- ratchet
- rope sheave
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- disc
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Abstract
The utility model discloses a subtract two -way automatic speed -limiting system of stroke, the rope sheave assembly is on the main shaft, it is equipped with the pawl to rotate on one side of the wheel face of rope sheave, be provided with between pawl and the rope sheave and make the pawl turn to the pawl torsional spring that ratchet and the draw -in groove card of ratchet are joined in marriage, it is equipped with pawl location structure still to rotate on the wheel face of rope sheave, the coaxial fixed dish that is provided with on the wheel face of gravity drop hammer is kept away from to the ratchet, the outer fringe position of dish has been laid from the reset switch, each is on the reset switch is in the circumference of a concentric circles of dish, the lever of reset switch stretches to the inboard separately, the free end of each lever is in respectively on the circumference of a set of concentric circles of dish, the gravity drop hammer touches each from the reset switch opening the in -process in proper order. The utility model discloses the ability realizes making corresponding building not need additionally to increase the headroom and the bottom space of elevator, and the purpose of elevator just more at a high speed can not adopted under need not increasing the condition of buffer cost to the while.
Description
Technical field
The utility model relates to a kind of for limiting the safety speed-limit system of elevator speed, relates in particular to one and subtracts stroke bidirectional speed limiting system.
Background technology
Along with the lifting of socioeconomic development and people's levels of substance, skyscraper is more and more, the normal speed of elevator is also more and more higher, due to buffer stroke and speed proportional, this just means that elevator speed is higher, needed buffer stroke is larger, headroom and the bottom space of elevator are higher, not only increase the cost of buffer, also can greatly increase building difficulty, waste construction area.
At present elevator generally at 2.5m/s with descending stair speed, buffer of elevator is to select according to rated speed of lift.
Buffer is to provide the elevator car safety of last a kind of safeguard protection. It is arranged in the well pit of elevator, be positioned at car and counterweight under. When elevator is in motion up or down; while surmounting terminal stop bottom or top layer because wire cable rupture, traction frictional force, brake sticking brake power deficiency or control system are malfunctioning; to play cushioning effect by buffer; to avoid lift car or counterweight directly hit the end or rush to summit, the safety of protection passenger and equipment.
If a kind of technical scheme can be provided, at the headroom and the bottom space that do not need additionally to increase elevator, do not need to increase in the situation of buffer cost simultaneously, just can make building adopt the elevator of more speed, can abolish this current predicament. This while just requiring lift car above running to buffer lowers speed, and limiter of speed just can be by the Speed Reduction of elevator.
Of the prior art have a kind of such bidirectional speed limiter, so-called bidirectional speed limiter is exactly the limiter of speed that can play a role at ascending for elevator with when descending, comprise base, on base, be rotatably equipped with rope sheave and ratchet by main shaft, the two ends of main shaft are arranged on base by bearing, rope sheave is assemblied on main shaft, is arranged with steel wire rope on rope sheave. the diameter of ratchet is less than the diameter of rope sheave, on the wheel face of rope sheave, be rotatably equipped with ratchet, between ratchet and rope sheave, be provided with torsion spring, torsion spring is to ratchet torsion, ratchet is rotated and there is all the time the trend of joining with the draw-in groove card of ratchet, at ratchet in free state, ratchet and ratchet can be in the states of clamping, on the termination of ratchet, convex with a fixture block, two cell wall blocks that the both sides of fixture block can draw-in groove, prevent that ratchet from moving with respect to ratchet on clockwise and counterclockwise both direction. on rope sheave, also rotate and be provided with ratchet location structure, ratchet location structure has a top pressure side, this pressure side top, top is pressed on ratchet, make ratchet in decontroling the normal condition of ratchet, between ratchet location structure and rope sheave, there is torsion spring, torsion spring provides the power of ratchet of compressing for ratchet location structure, make ratchet overcome the torsion spring power on it, keep the state separating with ratchet, on rope sheave, be also rotatably equipped with two gravity drop hammers, ratchet and ratchet location structure are in a side of rope sheave, and two gravity drop hammers are in an other side of rope sheave. two gravity drop hammers set-up mode on rope sheave is centrosymmetric mode, the run-on point of gravity drop hammer is not in two ends, more greatly tup end of one end quality of gravity drop hammer, other end quality is less is hammer handle end, between the hammer handle end of a gravity drop hammer and rope sheave, be provided with compression-spring device, compression-spring device makes the tup end of gravity drop hammer be in the centre of rope sheave, between the tup portion of this gravity drop hammer and the hammer handle portion of another gravity drop hammer, be connected with connecting rod, the two ends of connecting rod are hinged with two gravity drop hammers respectively, in the time of rope sheave normal rotation, under the effect of compression-spring device, the tup portion of two gravity drop hammers is all in the centre of rope sheave. in the time of rope sheave overspeed operation, under the effect of centrifugal force, the spring force that two gravity drop hammers can overcome compression-spring device opens, and two tups can all can turn to the edge of rope sheave, and two hammer handles turn to the center of rope sheave. on ratchet location structure, there is the trigger unit through rope sheave, in the time that the tup of gravity drop hammer turns to the outer rim of rope sheave, gravity drop hammer is pressed the top being convexly equipped with in trigger unit to top, the power that makes ratchet location structure overcome its torsion spring is rotated, ratchet location structure compresses ratchet, make ratchet continue to rotate to the direction away from ratchet, along with the increase of rotation distance, ratchet location structure can be decontroled ratchet, ratchet is stuck with ratchet under the effect of its torsion spring, when ratchet location structure is decontroled after ratchet, ratchet will be crossed ratchet location structure and keep off conversely ratchet location structure, ratchet location structure can not be resetted, at this moment, ratchet location structure pushes up under the effect of torsion spring power presses ratchet, ratchet is in and the state of ratchet buckle reliably, in this state, make it rotate and continue to rotate to the direction away from ratchet if move ratchet, ratchet will separate with ratchet location structure, ratchet location structure is return under the effect of its torsion spring, at this moment decontrol ratchet, ratchet location structure will be located with ratchet. in the time that ratchet is in the state of ratchet buckle reliably, rope sheave drives ratchet to rotate by ratchet. both sides in rope sheave on base are provided with brake plate device, on the keep plate of two brake plate devices, be provided with pull bar, one end of pull bar is located on keep plate, the side that two keep plates are relative with rope sheave is medial surface, another side is lateral surface, has outside spring in the arranged outside of keep plate, and the top, one end of outside spring is pressed on the lateral surface of keep plate, the other end of outside spring pushes up on the bulge loop on the termination that is pressed in pull bar, and other one end of pull bar joins on the wheel face of ratchet. in the time that elevator rises, rope sheave rotates toward a direction, and after ratchet and ratchet are fastened togather, ratchet is followed rope sheave and rotated, ratchet drives corresponding keep plate to press to rope sheave by a pull bar in the time rotating, realize the braking of rope sheave, while liter under elevator, rope sheave rotates toward another direction, after ratchet and ratchet are fastened togather, ratchet is followed rope sheave and is rotated, and ratchet drives another corresponding keep plate to press to rope sheave by another pull bar in the time rotating, and realizes the braking of rope sheave. on ratchet, convex with in the time that the hammer handle of gravity drop hammer turns to the wheel rim of rope sheave and press and make ratchet separate and make the lifting release link of ratchet location structure and ratchet pawl reset with ratchet with the hammer handle top of gravity drop hammer, at the Speed Reduction of rope sheave, after the speed of car lowers, gravity drop hammer can reset under the effect of reseting pressuring spring, at this moment the hammer handle of gravity drop hammer turns to the wheel rim of rope sheave, ratchet separates with ratchet, and limiter of speed automatically resets. on base, be also provided with electromagnet, in the time that switching on, electromagnet can push up pressure gravity drop hammer, gravity drop hammer is opened, allow ratchet and pawl be fastened togather, realize the forced brake of rope sheave, in the time that elevator breaks down, need to manually realize the braking of rope sheave, at this moment, switch on and just can realize the braking of rope sheave to electromagnet.
Utility model content
The purpose of this utility model is to provide one and subtracts stroke bidirectional speed limiting system, taking make limiter of speed can by braking rope sheave mode as car speed limit, thereby make corresponding building not need additionally to increase headroom and the bottom space of elevator, do not need to increase in the situation of buffer cost, just can adopt the elevator of more speed simultaneously.
In order to realize above object, the utility model adopts following technical scheme: one subtracts stroke bidirectional speed limiting system, comprise and subtract journey controller, limiter of speed, car top set position detection unit, car bottom set position detection unit, described limiter of speed comprises base, on base, be rotatably equipped with rope sheave and ratchet by main shaft, the two ends of main shaft are arranged on base by bearing, rope sheave is assemblied on main shaft, both sides in rope sheave on base are provided with brake plate device, in one side of the wheel face of rope sheave, be rotatably equipped with ratchet, between ratchet and rope sheave, be provided with the ratchet torsion spring that the draw-in groove card of ratchet turning ratchet wheel and ratchet is joined, on the wheel face of rope sheave, be also rotatably equipped with ratchet location structure, between ratchet location structure and rope sheave, be provided with location torsion spring, the top pressure side of ratchet location structure and the interference fit of ratchet elastic top, the opposite side of rope sheave wheel face is also rotatably equipped with two gravity drop hammers, on base, be also provided with in energising and push up afterwards the electromagnet of pressing gravity drop hammer that gravity drop hammer is opened, in the trigger unit of ratchet location structure, convex with in the time that the tup of gravity drop hammer turns to the outer rim of rope sheave and push with power hammer the top coordinating, on ratchet, convex with in the time that the hammer handle of gravity drop hammer turns to the wheel rim of rope sheave and press and make ratchet separate and make the lifting release link of ratchet location structure and ratchet pawl reset with ratchet with the hammer handle top of gravity drop hammer, described ratchet is away from being coaxially fixedly installed disc on the wheel face of gravity drop hammer, the outer rim position of disc is laid with self-resetting switch, each self-resetting switch is on a concentrically ringed circumference of disc, the lever of each self-resetting switch stretches to inner side, the free end of each lever is in respectively on one group of concentrically ringed circumference of disc, gravity drop hammer touches successively each self-resetting switch in the process of opening, car top set position detection unit is installed in Kong Su position, elevator hoistways top, car bottom set position detection unit is installed in the fast position of control, elevator hoistways bottom, the signal output part of car top set position detection unit connects the car top set signal input part that subtracts journey controller, the signal output part of car bottom set position detection unit connects the car bottom set signal input part that subtracts journey controller, the signal output part of self-resetting switch connects the car Control for Speed Limitation signal input part that subtracts journey controller, subtracts the brake signal output of journey controller for connecting the brake signal input of elevator master control system.
Described disc is sheet ring body, is radially laid with fixing calvus on the inner hole wall of disc, and fixing calvus is fixed by screws on disc.
Described self-resetting switch is fixed on disc by brace, and each brace radially extends and is wholely set with disc.
Described self-resetting switch is connected to the car Control for Speed Limitation signal input part that subtracts journey controller.
Described car top set position detection unit adopts the first travel switch, car bottom set position detection unit adopts the second travel switch, the first travel switch is arranged on the well enclosure of top, and lift car outer wall relevant position is equiped with the bow that hits bumping against for coordinating with the first travel switch; The second travel switch is arranged on the well enclosure of bottom, and lift car outer wall relevant position is equiped with the bow that hits bumping against for coordinating with the second travel switch.
The described journey controller that subtracts adopts microcontroller, and the brake signal output of microcontroller is for connecting the brake brake control signal input of elevator master control system.
The utility model is by the speed of car Control for Speed Limitation unit Real-Time Monitoring car, in the time that car top set position detection unit or car bottom set position detection unit detect that car arrives this position, output signal to and subtract journey controller, subtracting journey controller receives after this signal, judge whether current limiter of speed moves, if now limiter of speed action, subtract journey controller and output signal at once elevator master control system, control elevator brake, make elevator out of service before arriving buffer, thereby realizing makes corresponding building not need additionally to increase headroom and the bottom space of elevator, do not need to increase in the situation of buffer cost simultaneously, just can adopt the object of more speed elevator. on ratchet of the present utility model, be provided with disc, the outer rim position of disc is laid with self-resetting switch, each self-resetting switch is on a concentrically ringed circumference of disc, the lever of each self-resetting switch stretches to inner side, the free end of each lever is in respectively on one group of concentrically ringed circumference of disc, gravity drop hammer touches successively each self-resetting switch in the process of opening, when touching after self-resetting switch, self-resetting switch will output signal to and subtract journey controller, subtracting journey controller receives after this signal, judge whether current car Control for Speed Limitation unit moves, if now car Control for Speed Limitation unit action, subtract journey controller and output signal at once elevator master control system, control elevator brake, make elevator out of service before arriving buffer, thereby realizing makes corresponding building not need additionally to increase headroom and the bottom space of elevator, do not need to increase in the situation of buffer cost simultaneously, just can adopt the object of more speed elevator.
Brief description of the drawings
Fig. 1 is the structured flowchart of the utility model embodiment;
Fig. 2 is the circuit theory diagrams of the utility model embodiment;
Fig. 3 is car and the corresponding assembling schematic diagram of first, second travel switch shown in Fig. 2;
Fig. 4 is the overall structure schematic diagram of the limiter of speed of the utility model embodiment;
Fig. 5 is the assembling schematic diagram of rope sheave, ratchet and disc in Fig. 4;
Fig. 6 is the left view of Fig. 5;
Fig. 7 is the right view of Fig. 5;
Fig. 8 is rope sheave in Fig. 4 and the explosive view of ratchet.
Detailed description of the invention
A kind of embodiment that subtracts stroke bidirectional speed limiting system, in Fig. 1 ~ 8, comprise and subtract journey controller, limiter of speed, car top set position detection unit, car bottom set position detection unit, the limiter of speed is here bidirectional speed limiter, so-called bidirectional speed limiter is exactly the limiter of speed that can play a role at ascending for elevator with when descending, on base 1, be rotatably equipped with rope sheave 2 and ratchet 3 by main shaft, the two ends of main shaft are arranged on base 1 by bearing, rope sheave 2 splines are assemblied on main shaft, on rope sheave 2, are arranged with steel wire rope. the diameter of ratchet 3 is less than the diameter of rope sheave 2, on the wheel face of rope sheave 2, be rotatably equipped with ratchet 4, between ratchet 4 and rope sheave 2, be provided with torsion spring, torsion spring is to ratchet 4 torsion, ratchet 4 is rotated and there is all the time the trend of joining with the draw-in groove card of ratchet 3, at ratchet 4 in free state, ratchet 4 can be in the state of clamping with ratchet 3, on rope sheave 2, also rotate and be provided with ratchet location structure 6, ratchet location structure 6 has a top pressure side, this pressure side top, top is pressed on ratchet 4, make ratchet 4 in decontroling the normal condition of ratchet 3, between ratchet location structure 6 and rope sheave 2, there is torsion spring, torsion spring provides the power of ratchet 4 of compressing for ratchet location structure 6, make ratchet 4 overcome the torsion spring power on it, keep the state separating with ratchet 3, on rope sheave 2, be also rotatably equipped with two gravity drop hammers 5, ratchet 4 and ratchet location structure 6 are in a side of rope sheave 2, two gravity drop hammers 5 are in an other side of rope sheave 2. two gravity drop hammers 5 set-up mode on rope sheave 2 is centrosymmetric mode, the run-on point of gravity drop hammer 5 is not in two ends, more greatly tup end of one end quality of gravity drop hammer 5, other end quality is less is hammer handle end, between the hammer handle end of a gravity drop hammer 5 and rope sheave 2, be provided with compression-spring device 11, compression-spring device 11 makes the tup end of gravity drop hammer 5 be in the centre of rope sheave 2, between the tup portion of this gravity drop hammer 5 and the hammer handle portion of another gravity drop hammer 5, be connected with connecting rod 10, the two ends of connecting rod 10 are hinged with two gravity drop hammers 5 respectively, in the time of rope sheave 2 normal rotation, under the effect of compression-spring device 11, the tup portion of two gravity drop hammers 5 is all in the centre of rope sheave 2. in the time of rope sheave 2 overspeed operation, under the effect of centrifugal force, the spring force that two gravity drop hammers 5 can overcome compression-spring device 11 opens, and two tups can all can turn to the edge of rope sheave 2, and two hammer handles turn to the center of rope sheave 2. on ratchet location structure 6, there is the trigger unit through rope sheave 2, in the time that the tup of gravity drop hammer 5 turns to the outer rim of rope sheave 2, gravity drop hammer 5 is pressed the top being convexly equipped with in trigger unit to top, the power that makes ratchet location structure 6 overcome its torsion spring is rotated, ratchet location structure 6 compresses ratchet 4, make ratchet 4 continue to rotate to the direction away from ratchet 3, along with the increase of rotation distance, ratchet location structure 6 can be decontroled ratchet 4, ratchet 4 is stuck with ratchet 3 under the effect of its torsion spring, when ratchet location structure 6 is decontroled after ratchet 4, ratchet 4 will be crossed ratchet location structure 6 and keep off conversely ratchet location structure 6, ratchet location structure 6 can not be resetted, at this moment, ratchet location structure 6 pushes up under the effect of torsion spring power presses ratchet 4, ratchet 4 is in and the state of ratchet 3 buckles reliably. in this state, if the buckle between contact ratchet 4 and ratchet 3. making ratchet 4 and ratchet location structure 6 reply top mutually presses, while making ratchet 4 remain on the state separating with ratchet 3, just can move ratchet 4 makes it rotate and continue to rotate to the direction away from ratchet 3, ratchet 4 will separate with ratchet location structure 6, ratchet location structure 6 is return under the effect of its torsion spring, at this moment decontrol ratchet 4, ratchet location structure 6 will be located with ratchet 4, and both are returned to original state. on base 1, be provided with brake plate device in the both sides of rope sheave 2, on the keep plate of two brake plate devices, be provided with pull bar, one end of pull bar is located on keep plate, the side that two keep plates are relative with rope sheave 2 is medial surface, another side is lateral surface, has outside spring in the arranged outside of keep plate, and the top, one end of outside spring is pressed on the lateral surface of keep plate, the other end of outside spring pushes up on the bulge loop on the termination that is pressed in pull bar, and other one end of pull bar joins on the wheel face of ratchet 3. in the time that elevator rises, rope sheave 2 rotates toward a direction, after ratchet 4 and ratchet 3 are fastened togather, ratchet 3 is followed rope sheave 2 and is rotated, ratchet 3 drives corresponding keep plate to press to rope sheave 2 by a pull bar in the time rotating, realize the braking of rope sheave 2, while liter under elevator, rope sheave 2 rotates toward another direction, after ratchet 4 and ratchet 3 are fastened togather, ratchet 3 is followed rope sheave 2 and is rotated, and ratchet 3 drives another corresponding keep plate to press to rope sheave 2 by another pull bar in the time rotating, and realizes the braking of rope sheave 2.
On ratchet 4, convex with lifting release link 7, lifting release link 7 is perpendicular to the wheel face of rope sheave 2, the rope sheave 2 is here wheel hub dress, just there iing wheel rim, have core wheel, between core wheel and wheel rim, be linked to be an entirety by spoke, lifting release link 7 is by passing between two spokes, on the hammer handle of gravity drop hammer 5, offer functional hole 9, lifting release link 7 by after passing between two spokes again by passing in functional hole 9. On the hammer handle of gravity drop hammer 5, be fixed with top pinch roller 8 by being located in helicitic texture in functional hole 9, in the time that gravity drop hammer 5 resets, namely in the time that the hammer handle of gravity drop hammer 5 turns to the wheel rim of rope sheave 2, top pinch roller 8 can be pressed lifting release link 7 in top, namely drive ratchet 4 to make it rotate and continue to rotate to the direction away from ratchet 3, ratchet 4 will separate with ratchet location structure 6, ratchet location structure 6 is return under the effect of its torsion spring, at this moment decontrol ratchet 4, ratchet location structure 6 will be located with ratchet 4, both are returned to original state, realize automatically reseting of ratchet 4.
Because lifting release link 7 is through functional hole 9 on the hammer handle of gravity drop hammer 5, in motion process, lifting release link 7 can be with respect to the hammer handle motion of gravity drop hammer 5, so functional hole 9 need to have the part of dodging of dodging lifting release link 7, dodge part and can make lifting release link 7 move freely with respect to gravity drop hammer 5.
Coaxially be fixedly installed disc 12 at ratchet 3 on away from the wheel face of gravity drop hammer 5, disc 12 is sheet ring body, is radially laid with fixing calvus 16 on the inner hole wall of disc 12, and fixing calvus 16 is fixed by screws on disc. the outer rim of disc 7 is laid with brace 13, brace 13 is wholely set with disc 12, and brace 13 is coplanar with disc 12, on each brace 13, be fixed with self-resetting switch 14, each self-resetting switch 14 is on a circumference, this circumference is a concentric circles of disc 12, the lever 15 of each self-resetting switch 14 stretches to inner side, the free end of each lever 15 is in respectively on one group of concentrically ringed circumference, this group concentric circles is all concentric circles of disc, gravity drop hammer touches successively each self-resetting switch 14 in the process of opening, what lever was long first touches, lever short after touch.
On base 1, be also provided with electromagnet, after energising, electromagnet can push up pressure gravity drop hammer, and two gravity drop hammers are opened, and namely makes the heavier tup of gravity drop hammer turn to the outer rim of rope sheave, realizes the forced brake of rope sheave.
Shown in Fig. 1, the signal output part of self-resetting switch 14 connects the car Control for Speed Limitation signal input part that subtracts journey controller, subtracts the brake signal output of journey controller for connecting the brake signal input of elevator master control system. Car top set position detection unit is installed in Kong Su position, elevator hoistways top, car bottom set position detection unit is installed in the fast position of control, elevator hoistways bottom, Kong Su position, elevator hoistways top is not higher than well headroom buffer bottom surface, and the fast position of control, elevator hoistways bottom is not less than hoistway bottom buffer end face; The signal output part of car top set position detection unit connects the car top set signal input part that subtracts journey controller, and the signal output part of car bottom set position detection unit connects the car bottom set signal input part that subtracts journey controller.
Be illustrated in figure 2 the circuit theory diagrams that subtract stroke bidirectional speed limiting system that the utility model provides:
The described journey controller that subtracts adopts microcontroller U1, and it is STM32F103R8T6 that microcontroller U1 adopts model.
Described limiter of speed adopts self-resetting switch U2, self-resetting switch U2 is UKT self-resetting switch, be arranged on elevator governor, wherein the mechanical switch parts of self-resetting switch U2 are that the two ends of lever are connected between the J1-3 pin and J1com pin that subtracts journey controller U1, the mechanical switch parts one of self-resetting switch U2 move, the J1-3 pin that subtracts journey controller U1 just captures level change information, thereby knows that now car speed has exceeded the buffer normal speed prestoring.
Described car top set position detection unit adopts the first stroke switch S 1, and car bottom set position detection unit adopts the second travel switch S2; The first stroke switch S 1 is arranged on the well enclosure of top, and lift car outer wall relevant position is equiped with the bow that hits bumping against for coordinating with the first stroke switch S 1; The second travel switch S2 is arranged on the well enclosure of bottom, and lift car outer wall relevant position is equiped with the bow that hits bumping against for coordinating with the second travel switch S2.
As shown in Figure 3, the first stroke switch S 1 is arranged on the well enclosure at elevator hoistways top, and not higher than the bottom surface of well headroom buffer, the second travel switch S2 is arranged on the well enclosure of elevator hoistways bottom, and be not less than the end face of hoistway bottom buffer, the first stroke switch S 1, the second travel switch S2 is installed on the vertical line of same perpendicular to horizontal plane, corresponding the first stroke switch S 1 of outer wall of car C1, the position of the second travel switch S2 is equiped with a vertical integral type and hits bow B1, hit the outer wall height of bow B1 length close to car, hit the top of bow B1, bottom is set to respectively the inclined-plane tilting to car walls, the lever of the first stroke switch S 1 is set to compare horizontal plane and upwards lifts an angle, the lever of the second travel switch S2 is set to compare horizontal plane and is pressed with an angle downwards, described angle matches with the respective ramp of hitting bow B1 two ends just, first, the second travel switch S1, the lever end of S2 is provided with a roller, when hitting bow B1 and rise to well headroom and bump against the first stroke switch S 1 with car C1, can push down the lever of the first stroke switch S 1, in the time that car leaves, the lever of the first stroke switch S 1 can flick, the roller of the angle of inclination of lever and lever end is all in order to protect the first stroke switch S 1 in order to avoid damaged, the second travel switch S2 in like manner. first, second travel switch S1, S2 are mechanical switch.
As Fig. 2, the first stroke switch S 1 is connected between the J1com pin and J1-1 pin of microcontroller U1, the second travel switch S2 is connected between the J1com pin and J1-2 pin of microcontroller U1, in the time that the first stroke switch S 1 or the second travel switch S2 are not hit bow B1 and are pressed onto, all be closure state, in the time that the first stroke switch S 1 or the second travel switch S2 are hit bow B1 and are pressed onto, be off-state, microcontroller U1 changes and carrys out corresponding judgement according to the level on J1-1 pin, J1-2 pin.
In the present embodiment, the brake signal output J5-3 pin of microcontroller U1, J5com pin are distinguished confession electrical input two pins of connecting brake YB, power on for controlling brake YB.
It is S3BEL-1370 that described the first stroke switch S 1, the second travel switch S2 all adopt model, and brake model is DQN090.
In cage operation process, self-resetting switch U2 is along with the speed of the current car C1 of rotation Real-Time Monitoring of elevator governor, when car C1 moves to well headroom or hoistway bottom, hit bow B1 while bumping against the first stroke switch S 1 or the second travel switch S2, the first stroke switch S 1 or the second travel switch S2 disconnect, microcontroller U1 is known the status signal that judges current self-resetting switch U2 after this information, if now self-resetting switch U2 is normally off, illustrate that elevator master control system has realized normal deceleration, now car speed can not exceed the desin speed of buffer, now microcontroller U1 be failure to actuate (microcontroller U1 protection be that dangerous situation appears in the desin speed that the speed that prevents car cushion at collision exceeds buffer), if current self-resetting switch U2 disconnects, microcontroller U1 judges that current car speed has exceeded the buffer normal speed prestoring, control at once brake YB power-off, after brake YB power-off, damper brake locking, thus braking car moves, and makes corresponding building not need additionally to increase headroom and the bottom space of elevator thereby realize, do not need to increase in the situation of buffer cost, just can adopt the object of the elevator of more speed simultaneously.
The above; it is only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection domain of the present utility model. Therefore, protection domain of the present utility model should described be as the criterion with the protection domain of claim.
Claims (6)
1. one kind subtracts stroke bidirectional speed limiting system, comprise and subtract journey controller, limiter of speed, car top set position detection unit, car bottom set position detection unit, described limiter of speed comprises base, on base, be rotatably equipped with rope sheave and ratchet by main shaft, the two ends of main shaft are arranged on base by bearing, rope sheave is assemblied on main shaft, both sides in rope sheave on base are provided with brake plate device, in one side of the wheel face of rope sheave, be rotatably equipped with ratchet, between ratchet and rope sheave, be provided with the ratchet torsion spring that the draw-in groove card of ratchet turning ratchet wheel and ratchet is joined, on the wheel face of rope sheave, be also rotatably equipped with ratchet location structure, between ratchet location structure and rope sheave, be provided with location torsion spring, the top pressure side of ratchet location structure and the interference fit of ratchet elastic top, the opposite side of rope sheave wheel face is also rotatably equipped with two gravity drop hammers, on base, be also provided with in energising and push up afterwards the electromagnet of pressing gravity drop hammer that gravity drop hammer is opened, in the trigger unit of ratchet location structure, convex with in the time that the tup of gravity drop hammer turns to the outer rim of rope sheave and push with power hammer the top coordinating, on ratchet, convex with in the time that the hammer handle of gravity drop hammer turns to the wheel rim of rope sheave and press and make ratchet separate and make the lifting release link of ratchet location structure and ratchet pawl reset with ratchet with the hammer handle top of gravity drop hammer, it is characterized in that: described ratchet is away from being coaxially fixedly installed disc on the wheel face of gravity drop hammer, the outer rim position of disc is laid with self-resetting switch, each self-resetting switch is on a concentrically ringed circumference of disc, the lever of each self-resetting switch stretches to inner side, the free end of each lever is in respectively on one group of concentrically ringed circumference of disc, gravity drop hammer touches successively each self-resetting switch in the process of opening, car top set position detection unit is installed in Kong Su position, elevator hoistways top, car bottom set position detection unit is installed in the fast position of control, elevator hoistways bottom, the signal output part of car top set position detection unit connects the car top set signal input part that subtracts journey controller, the signal output part of car bottom set position detection unit connects the car bottom set signal input part that subtracts journey controller, the signal output part of self-resetting switch connects the car Control for Speed Limitation signal input part that subtracts journey controller, subtracts the brake signal output of journey controller for connecting the brake signal input of elevator master control system.
2. the stroke bidirectional speed limiting system that subtracts according to claim 1, is characterized in that: described disc is sheet ring body, on the inner hole wall of disc, be radially laid with fixing calvus, fixing calvus is fixed by screws on disc.
3. the stroke bidirectional speed limiting system that subtracts according to claim 1 and 2, is characterized in that: described self-resetting switch is fixed on disc by brace, and each brace radially extends and is wholely set with disc.
4. the stroke bidirectional speed limiting system that subtracts according to claim 1, is characterized in that: described self-resetting switch is connected to the car Control for Speed Limitation signal input part that subtracts journey controller.
5. according to subtracting stroke bidirectional speed limiting system described in claim 1 or 4, it is characterized in that: described car top set position detection unit adopts the first travel switch, car bottom set position detection unit adopts the second travel switch, the first travel switch is arranged on the well enclosure of top, and lift car outer wall relevant position is equiped with the bow that hits bumping against for coordinating with the first travel switch; The second travel switch is arranged on the well enclosure of bottom, and lift car outer wall relevant position is equiped with the bow that hits bumping against for coordinating with the second travel switch.
6. the stroke bidirectional speed limiting system that subtracts according to claim 5, is characterized in that: described in subtract journey controller and adopt microcontroller, the brake signal output of microcontroller is for connecting the brake brake control signal input of elevator master control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520824150.4U CN205257714U (en) | 2015-10-23 | 2015-10-23 | Subtract two -way automatic speed -limiting system of stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520824150.4U CN205257714U (en) | 2015-10-23 | 2015-10-23 | Subtract two -way automatic speed -limiting system of stroke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205257714U true CN205257714U (en) | 2016-05-25 |
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ID=55999255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520824150.4U Withdrawn - After Issue CN205257714U (en) | 2015-10-23 | 2015-10-23 | Subtract two -way automatic speed -limiting system of stroke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205257714U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105197718A (en) * | 2015-10-23 | 2015-12-30 | 西继迅达（许昌）电梯有限公司 | Stroke-reduced two-way automatic speed limiting system |
| CN112424103A (en) * | 2018-07-24 | 2021-02-26 | 三菱电机株式会社 | Speed limiter of elevator |
-
2015
- 2015-10-23 CN CN201520824150.4U patent/CN205257714U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105197718A (en) * | 2015-10-23 | 2015-12-30 | 西继迅达（许昌）电梯有限公司 | Stroke-reduced two-way automatic speed limiting system |
| CN105197718B (en) * | 2015-10-23 | 2018-04-10 | 西继迅达（许昌）电梯有限公司 | Subtract stroke bidirectional speed limiting system |
| CN112424103A (en) * | 2018-07-24 | 2021-02-26 | 三菱电机株式会社 | Speed limiter of elevator |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160525 Effective date of abandoning: 20180410 |
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| AV01 | Patent right actively abandoned |