CN109803911A - Elevator used governor and lift appliance - Google Patents

Abstract

The present invention, which provides, can be accurately proceed the elevator used governor of detection to the rotation of the rotary bodies such as pulley using encoder and use the lift appliance of elevator used governor.Elevator used governor of the invention has frame (31), the rotary body (pulley (22)) for being installed on frame (31) in a manner of it can rotate and correspondingly being rotated with the movement of lifting body (2), and to the encoder (27) that the rotation of rotary body is detected, the rotation of the elevator used governor and rotary body correspondingly detects the hypervelocity of lifting body (2), when an overspeed is sensed, emergency braking apparatus is set to work, the elevator used governor has support shaft (32) coaxially fixed with rotary body and that frame is supported in a manner of it can rotate, the axis of encoder (27) and support shaft (32) are coaxially connected to one end of support shaft (32).

Description

Elevator used governor and lift appliance

Technical field

The present invention relates to elevator used governor and use the lift appliance of the elevator used governor.

Background technique

In lift appliance, it is generally configured with governor, the governor for carrying out the lifting speed of lift car always Monitoring makes the lift car emergent stopping of overrun condition as defined in falling into.When the lifting speed of lift car is more than normal speed When, governor will drive the power supply of the hoist engine of lift car and control the dump of the control device of hoist engine, or make Emergency braking apparatus movement and with making elevator car machinery emergent stopping.

It has been known that there is installed on such governor encoder and the speed to lift car, displacement, rotation direction into The technology of row monitoring (referring for example to patent document 1).In this technique, it is provided with and is wrapping with the pulley contact of speed regulation hoist cable Roller, the rotation of the roller is detected using encoder, to monitor the speed of lift car, displacement, rotation direction.

Citation

Patent document

Patent document 1: Japanese Unexamined Patent Publication 11-79587 bulletin

Summary of the invention

Subject to be solved by the invention

In the above prior art, may skid with the roller of pulley contact, exist be difficult to improve detection precision and can By property such problems.

In this regard, the present invention, which provides one kind, to be accurately proceed detection to the rotation of the rotary bodies such as pulley using encoder Elevator used governor and using the elevator used governor lift appliance.

Solution for solving the problem

In order to solve the above problems, elevator used governor of the invention has frame, is installed in a manner of it can rotate Frame and the rotary body correspondingly rotated with the movement of lifting body and the encoder detected to the rotation of rotary body, should The rotation of elevator used governor and rotary body correspondingly detects the hypervelocity of lifting body, when an overspeed is sensed, makes urgent Brake apparatus work, the elevator used governor have support shaft, which coaxially fixes with rotary body, and can rotate Mode be supported on frame, the axis and support shaft of encoder are coaxially connected to one end of support shaft.

In addition, in order to solve the above problems, lift appliance of the invention has lifting body and balance weight, in liftway Suspention lifting body and the main hoist cable of balance weight, the hoist engine driven to main hoist cable, the emergency braking for being set to lifting body fill Set and detected to the hypervelocity of lifting body and made when an overspeed is sensed the governor of emergency braking apparatus work, speed regulation Machine is the elevator used governor of aforementioned present invention.

Invention effect

According to the present invention, the axis of encoder and support shaft are coaxially connected to one end of support shaft, therefore, can utilize volume Code device is accurately proceed detection to the rotation of rotary body.The reliability of lift appliance improves as a result,.

It should be noted that project other than the above, structure and effect are defined by following implementation.

Detailed description of the invention

Fig. 1 is the structure chart for showing the lift appliance of one embodiment of the present invention.

Fig. 2 is the side view for showing the structure of the governor in embodiment.

Fig. 3 is the main view for showing the structure of the governor in embodiment.

Fig. 4 schematically shows the positional relationship of the bearing of coder side, bear box, support shaft and caulking part.

Fig. 5 schematically shows the positional relationship of the bearing of Gray code device side, bear box and support shaft.

Specific embodiment

Hereinafter, using attached drawing, embodiments of the present invention will be described.It should be noted that in the various figures, referring to mark Number identical constitutive requirements indicate identical constitutive requirements or have the constitutive requirements of similar functions.

Fig. 1 is the structure chart for showing the lift appliance of one embodiment of the present invention.

As shown in Figure 1, lifting body 2 (is in the present embodiment " elevator in the liftway 13 for being set to building Carriage ") linked with balance weight 3 by main hoist cable 4.Main hoist cable 4 is wound around the traction wheel 5 and deflector sheave 6 that hoist engine has On, which is arranged in the Machine Room for being formed in the top of liftway 13.Therefore, lifting body 2 and balance weight 3 are hung by master Rope 4 is suspended in liftway 13.Main hoist cable 4 is driven by traction wheel 5.When main hoist cable 4 is driven, lifting body 2 is logical in lifting It is gone up and down in road 13 along guide rail 7.In addition, (saving sketch map configured with the control device controlled hoist engine in Machine Room Show), governor 10 etc..

Lifting body 2 has multiple track guide devices (illustration omitted), these sides of track guide device can slide Formula engages with guide rail 7.Lifting body 2 is gone up and down in liftway 13 along guide rail 7 as a result,.That is, guide rail 7 is right on lifting direction Lifting body 2 guides.Here, " lifting direction " refers to lifting body 2 and the direction that balance weight 3 is gone up and down.

Balance weight 3 has multiple track guide devices (illustration omitted).These sides of track guide device can slide Formula engages with the guide rail (illustration omitted) that the balance on the wall surface for being fixed on liftway 13 reuses.Balance weight 3 is by balancing as a result, The guide rail of reuse is gone up and down in liftway 13 along the guidance of lifting direction.

Lifting body 2 and balance weight 3 are suspended in liftway 13 by main hoist cable 4.Master has been wrapping in the circumferential groove of traction wheel 5 Hoist cable 4.When traction wheel 5 is by being set to driving device that mechanical indoor hoist engine has (such as motor: illustration omitted) When driving and rotating, rubbed by the frictional force acted between main hoist cable 4 and the circumferential groove of traction wheel 5 to main hoist cable 4 Wipe driving.Lifting body 2 and balance weight 3 are gone up and down in liftway 13 as a result,.

When the lifting speed of lifting body 2 is more than normal speed and reaches the first hypervelocity (such as 1.3 times of normal speed), Governor 10 cuts the power supply of the power supply for driving the driving device of traction wheel 5 and the control device for controlling the driving device respectively It is disconnected.In addition, governor 10 makes promptly when the decrease speed of lifting body 2 reaches the second hypervelocity (such as 1.4 times of normal speed) Brake apparatus 8 acts.Make the mechanically emergent stopping of lifting body 2 as a result,.

Emergency braking apparatus 8 is set to lifting body 2, holds guide rail 7 using wedge component when urgent, makes lifting body 2 Lifting stops.Working beam 9 is pivotally supported in lifting body 2, is driven to emergency braking apparatus 8.The working beam 9 and aftermentioned tune Speed is linked with hoist cable 21.

Ring-type has been wrapping on the pulley 22 of governor 10 and the lower pulley 33 for the lower part being set in liftway 13 Speed regulation hoist cable 21.Lower pulley 33 is opposed with pulley 22 on lifting direction, in order to assign tension to speed regulation hoist cable 21 And has tension weight 34.Speed regulation assigns lifting travel of the tension in liftway 13 by tension weight 34 with hoist cable 21 Whole region is tightened up.

The emergency braking apparatus 8 for holding guide rail 7 using wedge component when urgent and right is provided on lifting body 2 Emergency braking apparatus 8 is driven and is pivotally supported in the working beam 9 of 2 side of lifting body.Speed regulation hoist cable is linked on working beam 9 21.In the case where emergency braking apparatus 8 acts, 10 pairs of speed regulation of governor are held with hoist cable 21.As a result, when working beam 9 When working and the wedge component of emergency braking apparatus 8 being made to hold guide rail 7, lifting body 2 stops rapidly.

It should be noted that lifting body 2 and the respective lower part of balance weight 3 are linked by compensation hoist cable 11.Compensation hoist cable 11 exists Lower part in liftway 13 is wound around on compensating sheave 12.Compensating sheave 12 is by standing up the bottom of liftway 13 Compensation track (illustration omitted) bearing is to move freely in the up-down direction.Compensation hoist cable 11 in this way, it is adjoint to compensate The imbalance of load caused by the difference of the length of the main hoist cable 4 of 3 side of 2 side of lifting body and balance weight.

Then, the structure of the governor in present embodiment is illustrated.

Fig. 2 is the side view for showing the structure of the governor in present embodiment.In addition, Fig. 3 is to show present embodiment In governor structure main view.It should be noted that main view when Fig. 3 is from 27 side of encoder of Fig. 2.

As shown in Figures 2 and 3, governor 10 has speed regulation and (is omitted in Fig. 2) with hoist cable 21；Pulley as rotary body 22；Oscillator 23,24；Ratchet 25；Boots mechanism 26 and encoder 27.Speed regulation hoist cable 21 is connect with lifting body 2, with lifting body 2 It moves together and rotates pulley 22.Pulley 22 is coaxially disposed with support shaft 32, and the support shaft 32 is in a manner of it can rotate It is supported on the frame 31 in the Machine Room configuration on the top of liftway 13 (Fig. 1), cricoid speed regulation has been wrapping on pulley 22 With hoist cable 21.

Oscillator 23,24 has the shape of substantially arc-shaped, is rotatably supported on and is coaxially disposed with pulley 22 And the arm 35 rotated together.As shown in figure 3, there is oscillator 23 one end 23a and the other end 23b, one end 23a to compare the other end Portion 23b weight.In addition, oscillator 24 has one end 24a and the other end 24b, one end 24a is than the other end 24b weight.

When arm 35 rotates together with pulley 22, oscillator 23,24 is rotated by centrifugal force.Therefore, the one of oscillator 23,24 End 23a, 24a are displaced to the direction far from support shaft 32, and the other end 23b, 24b of oscillator 23,24 are to close to support shaft 32 Direction displacement.

In addition, the other end 23b in oscillator 23 is provided with oscillator pawl 36.Oscillator pawl 36 (is propped up from the inside in oscillator 23 Hold 32 side of axis) side it is prominent towards support shaft 32.When oscillator 23,24 makes the other end of oscillator 23 by centrifugal force rotation To when being displaced close to the direction of support shaft 32, oscillator pawl 36 engages 23b with the teeth portion (illustration omitted) of ratchet 25.

One end 23a, 24a of oscillator 23,24 are provided with detection protrusion 23c, 24c.The detection protrusion 23c, 24c Side from the outside (side opposite with support shaft 32) in oscillator 23,24 is prominent towards the periphery of pulley 22.Protrusion is used in detection 23c, 24c are contacted in the case where oscillator 23,24 is rotated with detection switch (illustration omitted).It should be noted that detection switch It is installed on frame 31, it is not shown to this.

Ratchet 25 is pivotally supported in support shaft 32, and is formed as disk-shaped, and the plane of a side is opposed with oscillator 23,24.In spine The outer peripheral surface of wheel 25 is formed with teeth portion (illustration omitted).The oscillator pawl 36 of oscillator 24 after rotation engages with the teeth portion of ratchet 25. It should be noted that ratchet 25 revolves together with pulley 22 and oscillator 23,24 when oscillator pawl 36 engages with the teeth portion of ratchet 25 Turn.

Boots mechanism 26 has bar portion 41, spring shaft 42, control arm 43, force application spring 44 and brake shoe 45.

Bar portion 41 is formed as rodlike, and the end of the side in the longitudinal direction of bar portion 41 is supported in a manner of it can rotate The connecting shaft 46 being fixed on ratchet 25.

Spring shaft 42 is inserted into a manner of it can slide to the end of another party of bar portion 41, and through control arm 43 and is applied Power spring 44.

Control arm 43 is supported on frame 31 in a manner of it can rotate, also, is configured at bar portion in one end of control arm 43 In the state of between 41 and force application spring 44, spring shaft 42 is made to pass through the one end.

Force application spring 44 is, for example, compressed spring, is exerted a force to one end of control arm 43 to 41 side of bar portion.

Brake shoe 45 is rotatably supported on control arm 43, and with the speed regulation hoist cable 21 that is hung on pulley 22 It is opposed.The brake shoe 45 is pressed against speed regulation hoist cable in the case where the rotation of boots mechanism 26 and ratchet 25 correspondingly acts 21.As a result, stop the movement of speed regulation hoist cable 21.

Encoder 27 is configured at the side of a side of frame 31, in one end being rotated into support shaft 32 of support shaft 32 Row detection.That is, encoder 27 detects the rotation of pulley 22.

Support shaft 32 via as bearing coder side bearing 51 and Gray code device side bearing 52 can be revolved with its both ends The mode turned is installed on frame 31.In addition, encoder axis 32a is extended from one end of support shaft 32, it is installed on coder side The encoder 27 of the side of bear box 53 is opposed with the encoder axis 32a, and encoder axis 32a coaxially connects with support shaft 32 It connects.Reliably the rotation of pulley 22 is detected using encoder 27 as a result,.

It should be noted that side or coder side bear box 53 of the encoder 27 by the side for being set to frame 31 The bracket of side etc. and be fixedly supported on these sides, to this illustration omitted.

Coder side bearing 51 is installed on coder side bear box 53, in this state, coder side bear box 53 It is fitted into and is fixed in the hole for the side of a side for being set to frame 31.In addition, Gray code device side bearing 52 is installed on Gray code Device side bearing shell 54, in this state, Gray code device side bearing shell 54, which is fitted into and is fixed on, is set to the another of frame 31 In the hole of the side of side.

Here, in the present embodiment, frame 31 is and the laminal steel plate bending by a few mm~7mm degree of thickness It constitutes.Thereby, it is possible to realize the small, light of governor.In the present embodiment, using in the bearing for being fixed on frame 31 The bearing installed on shell supports support shaft 32 in a manner of two supports, therefore, even if constituting frame by thin plate 31, mechanical strength also improves.

Coder side bearing 51 constrains in bearing by being set to caulking part 53a, 53b of coder side bear box 53 The displacement on left and right directions in axial direction, that is, Fig. 2 of axis 32.That is, coder side bearing 51 is using caulking part 53a, 53b as connection Mechanism and with coder side bear box 53 link, become the bearing of so-called affixed side.

Fig. 4 schematically shows the positional relationship of the bearing of coder side, bear box, support shaft and caulking part.

In the present embodiment, coder side bearing 51 is made of rolling bearing, which has outer ring 51b and interior Enclose 51a and the rolling element (roller bearing, ball etc.) between outer ring 51b and inner ring 51a.

In the present embodiment, caulking part 53b makes in coder side bear box 53 and coder side by impact etc. The adjacent part of bearing 51 is locally plastically deformed and is formed.Therefore, caulking part 53b and coder side bear box 53 be integrally Setting, towards support shaft 32 extend, and with the side to the side for being placed in pulley 22 in the outer ring 51b of coder side bearing 51 It abuts.It should be noted that caulking part 53a is only located in the side of the outer ring 51b in the side of coder side bearing 51.Separately Outside, caulking part 53b is formed as that rolling element, inner ring 51a and outer ring 51b is not made to deform and be damaged.

Caulking part 53a is similarly formed, with the side to the another party for being placed in encoder 27 in coder side bearing 51 Face abuts.Caulking part in this way constrains coder side bearing 51 the case where the axis of support shaft 32 moves up.

It is compiled in the side of Gray code device side and instead without constraint the side of the coder side of Gray code device side bearing 52 It is formed with gap L (Fig. 2) between code device side bearing shell 54, allows movement in the axial direction.That is, Gray code device side bearing 52 at For the bearing of so-called free side.In this way, by the way that coder side bearing 51 is set as affixed side and by Gray code device side bearing 52 It is set as free side, the dilation in axial i.e. longitudinal direction of support shaft 32 caused by capable of making because of temperature change is to freedom Side evacuation, prevents support shaft 32 to be displaced due to thermal expansion to affixed side.Even if support shaft 32 thermally expands as a result, also can Therefore the stress for inhibiting encoder 27 to bear via encoder axis 32a can prevent the damage or breakage of encoder 27.

It should be noted that as shown in Fig. 2, the outside towards governor 10 in Gray code device side bearing shell 54 is opened The diameter of oral area is less than the diameter of Gray code device side bearing 52.The positioning of Gray code device side bearing 52 is carried out as a result, and is prevented anti- Coder side bearing 52 falls off.In addition, the diameter of the opening portion towards encoder 27 in coder side bear box 53 is small In the diameter of coder side bearing 51.The positioning of coder side bearing 51 is carried out as a result, and prevents the de- of coder side bearing 51 It falls.

Fig. 5 schematically shows the positional relationship of the bearing of Gray code device side, bear box and support shaft.

In the present embodiment, Gray code device side bearing 52 is made of in the same manner as coder side bearing rolling bearing.

In the present embodiment, the inner ring 52a of Gray code device side bearing 52 shown in fig. 5 is embedded in the support shaft of rotation 32.Therefore, inner ring 52a is chimeric by so-called interference fit with support shaft 32.That is, inner ring 52a is fixed on support shaft 32, if It is set to so-called affixed side.

In addition, the outer ring 52b of Gray code device side bearing 52 shown in fig. 5 is embedded in and does not rotate and static Gray code device side Bear box 54.Therefore, outer ring 51b and Gray code device side bearing shell 54 are chimeric by so-called clearance fit.That is, outer ring 52b can be slided relative to Gray code device side bearing shell 54, that is, be set as so-called free side.Therefore, in present embodiment In, it is provided with gap L (Fig. 2) in the outer ring side 52b, which becomes for the stretching, extension because of support shaft 32 caused by thermally expanding Relief portion.

It should be noted that, although coder side bear box 53 is fixed in 51 portion of being riveted of coder side bearing, but compile Code device side bearing 51 is chimeric likewise by clearance fit with coder side bear box 53 and Gray code device side.

Then, the movement of governor 10 is illustrated referring to Fig. 3.

In the usual operating of lift appliance 1, the ratchet 25 of governor 10 becomes original state (stationary state).Moreover, When lifting body 2 (Fig. 1) decline, speed regulation hoist cable 21 moves together with lifting body 2 and keeps pulley 22 clockwise into Fig. 3 The direction (hereinafter referred to as " direction R1 ") of (arrow R1) rotates.The arm 35 for being equipped with oscillator 23,24 is also rotated with pulley 22 together, Therefore, centrifugal force acts on oscillator 23,24.When centrifugal force is more than the balancing spring (illustration omitted) as oscillator biasing member When resistance, oscillator 23,24 is rotated around the mounting portion for being installed on arm 35.

Here, when the lifting speed of lifting body 2 (Fig. 1) reaches the first hypervelocity (such as 1.3 times of normal speed), oscillator 23,24 one end 23a, 24a are contacted with detection switch (illustration omitted).Governor 10 detects the lifting of lifting body 2 as a result, Speed reaches the first hypervelocity.Moreover, the driving device (illustration omitted) of traction wheel 5 will be driven when detecting the first hypervelocity Power supply and the power supply of control device (illustration omitted) for controlling the driving device are cut off respectively.

In addition, exceed the speed limit when the decrease speed of lifting body 2 reaches big second of exceeding the speed limit than first (such as the 1.4 of normal speed Times) when, the oscillator pawl 36 of the oscillator 23 of rotation engages with the teeth portion of ratchet 25, and around the rotation of the oscillator 23 of support shaft 32 Rotate ratchet 25 to the direction R1.That is, governor 10 starts trip operation (emergency braking action).When ratchet 25 rotates, bar Portion 41 is mobile to the direction R1 and presses control arm 43, and therefore, control arm 43 is rotated to the direction R1.

When control arm 43 is rotated to the direction R1, brake shoe 45 is pressed against the speed regulation hoist cable being wound around on pulley 22 21, to hold speed regulation hoist cable 21.The speed regulation mobile stopping of hoist cable 21 as a result,.At this point, lifting body 2 continues to decline, because This, is set to lifting body and the working beam 9 linked with speed regulation hoist cable 21 is raised.Emergency braking apparatus 8 works as a result, will The mechanically emergent stopping of lifting body 2.

Then, it is illustrated referring to the movement of Fig. 2,3 pairs of encoders 27.

When lifting body 2 (Fig. 1) decline, speed regulation hoist cable 21 and lifting body 2 move together and make pulley 22 to the direction R1 Rotation.On the other hand, when lifting body 2 rises, speed regulation hoist cable 21 and lifting body 2 move together and make pulley 22 into Fig. 3 (arrow R2) counterclockwise direction (hereinafter referred to as " direction R2 ") rotation.

Here, support shaft 32 is coaxially disposed with pulley 22, and the both ends of support shaft 32 via coder side bearing 51 and Gray code device side bearing 52 is installed on frame 31 in a manner of it can rotate.Therefore, when pulley 22 by the decline of lifting body 2 and When rising and rotating, support shaft 32 also rotates.

Correspondingly, the encoder axis 32a being extended from one end of support shaft 32 also rotates for rotation with support shaft 32, should The rotation of encoder axis 32a is detected by encoder 27.Then, the control device (illustration omitted) of lift appliance 1 be based on from The interval for the pulse signal that encoder 27 inputs calculates the speed of lifting body 2, or based on from car position sensor and Each signal of encoder 27 calculates the position of the lifting body 2 in liftway 13.

As described above, according to the present embodiment, encoder 27 and support shaft 32 are coaxially linked, therefore, coding is utilized Device 27 directly detects the rotation of support shaft 32.Thereby, it is possible to the rotation of pulley 22 is accurately detected using encoder 27.

In addition, coder side bearing 51 is set as affixed side, and Gray code device side bearing 52 is set as free side.As a result, The stretching, extension of support shaft 32 caused by capable of making because of thermal expansion is avoided to Gray code device side.Therefore, even if by encoder 27 and bearing Axis 32 coaxially links, and is also able to suppress the stress that the support shaft 32 from having thermally expanded is assigned to encoder 27, therefore, Neng Goufang The only damage or breakage of encoder 27.

In addition, component can not led to by caulking part 53a, 53b by being set as the coder side bearing 51 of affixed side Number reliably constrains movement in the axial direction in the state of increasing.

It should be noted that in the present embodiment, support shaft 32 passes through in the coder side bearing for being fixed on frame 31 Coder side bearing 51 and Gray code device side bearing 52 chimeric respectively on shell 53 and Gray code device side bearing shell 54, with two The mode of end bearing is supported.It can be stably rotated with the coaxial mounted encoder 27 of support shaft 32 as a result,.In addition, utilizing The frame 31 being made of the thin plate after bending can be realized small-sized, lighting, and can ensure mechanical strength.

In addition, in the lift appliance for the governor 10 for having present embodiment, operating condition (speed, shifting of lifting body 2 Momentum (displacement), rotation direction etc.) detection accuracy improve.Therefore, control precision improve, therefore, lift appliance it is reliable Property improve.

It should be noted that the present invention is not limited to embodiment above-mentioned, it include various modifications example.For example, above-mentioned Embodiment is for easy understanding to illustrate the present invention and the explanation that carries out in detail, is not limited to have illustrated all Structure.In addition, a part of the structure for embodiment, is able to carry out the addition, deletion, replacement of other structures.

For example, the link mechanism as coder side bearing 51 and coder side bear box 53, also can replace riveting Portion is linked coder side bearing 51 and coder side bear box 53 using the coupling member being made of thin plate sheet etc..

In addition, also can replace the rolling bearing in above embodiment as bearing (bearing), and application will prop up Hold other bearings being pivotally supported as that can rotate.

In addition, frame 31 can also be made of casting.

In addition, lift appliance may be hoist engine and so-called machine House-less in liftway is arranged in control device Elevator.

In addition, governor is not limited to suspension cable type as above embodiment, it is also possible to the tune of so-called no hoist cable Fast machine.The governor of no hoist cable is set to lifting body, and rotary body corresponding with pulley 22 with lifting body with guide rail for example by being connect It touches and is rotated together with the movement of lifting body.

Description of symbols:

1 ... lift appliance, 2 ... lifting bodies, 3 ... balance weights, 4 ... main hoist cables, 5 ... traction wheels, 6 ... deflector sheaves, 7 ... lead Rail, 8 ... emergency braking apparatus, 9 ... working beams, 10 ... governors, 11 ... compensation hoist cables, 12 ... compensating sheaves, 13 ... liftings are logical Road, 21 ... speed regulation hoist cables, 22 ... pulleys, 23,24 ... oscillators, 25 ... ratchets, 26 ... boots mechanisms, 27 ... encoders, 31 ... frames Frame, 32 ... support shafts, 32a ... encoder axis, 33 ... lower pulleys, 34 ... tension weights, 35 ... arms, 36 ... oscillator pawls, 41 ... Bar portion, 42 ... spring shafts, 43 ... control arms, 44 ... force application springs, 45 ... brake shoes, 51 ... coder side bearings, 52 ... anti-volumes Code device side bearing, 53 ... coder side bear boxes, 53a, 53b ... caulking part, 54 ... Gray code device side bearing shells, L ... Gap.

Claims (10)

1. a kind of elevator used governor, has:

Frame；

Rotary body is installed on the frame in a manner of it can rotate, and correspondingly rotates with the movement of lifting body；And

Encoder detects the rotation of the rotary body,

The rotation of the elevator used governor and the rotary body correspondingly detects the hypervelocity of the lifting body, works as detection When to the hypervelocity, emergency braking apparatus is made to work,

The elevator used governor is characterized in that,

The elevator used governor has support shaft, which coaxially fixes with the rotary body, and can rotate Mode is supported on the frame,

The axis of the encoder and the support shaft are coaxially connected to one end of the support shaft.

2. elevator used governor according to claim 1, which is characterized in that

The one end and the other end of the support shaft is respectively that can rotate by first bearing and second bearing bearing.

3. elevator used governor according to claim 2, which is characterized in that

The first bearing and the second bearing are embedded in fixed first bearing shell and second on said frame respectively Bear box.

4. elevator used governor according to claim 3, which is characterized in that

The frame is made of laminal component.

5. elevator used governor according to claim 2, which is characterized in that

The first bearing is set as affixed side, and the second bearing is set as free side.

6. elevator used governor according to claim 3, which is characterized in that

The first bearing is restrained relative to the movement of the first bearing shell in the axial direction, the second bearing relative to The second bearing shell can slide axially.

7. elevator used governor according to claim 6, which is characterized in that

The elevator used governor has the company for linking the side of the first bearing shell and the side of the first bearing Mechanism is tied,

The movement of the first bearing in the axial direction is constrained by the link mechanism,

Have between the side and the second bearing shell of the opposite side of in the second bearing the and described encoder Gap.

8. elevator used governor according to claim 7, which is characterized in that

The link mechanism is made of the caulking part for extending to the first bearing from the side of the first bearing shell.

9. elevator used governor according to claim 2, which is characterized in that

The first bearing and the second bearing are made of the first rolling bearing and the second rolling bearing respectively,

Each inner ring of first rolling bearing and second rolling bearing is embedded in the support shaft, and is set as fixed Side,

Each outer ring of first rolling bearing and second rolling bearing is set as free side.

10. a kind of lift appliance, has:

Lifting body and balance weight；

Main hoist cable suspends the lifting body and the balance weight in midair in liftway；

Hoist engine drives the main hoist cable；

Emergency braking apparatus is set to the lifting body；And

Governor detects the hypervelocity of the lifting body, when detecting the hypervelocity, makes the emergency braking apparatus Work,

The lift appliance is characterized in that,

The governor has:

Frame；

Rotary body is installed on the frame in a manner of it can rotate, and correspondingly rotates with the movement of the lifting body；With And

Encoder detects the rotation of the rotary body,

The rotation of the governor and the rotary body correspondingly detects the hypervelocity of the lifting body,

The governor has support shaft, which coaxially fixes with the rotary body, and the branch in a manner of it can rotate It holds in the frame,

The axis of the encoder and the support shaft are coaxially connected to one end of the support shaft.