CN103373656B - Elevator - Google Patents
Elevator Download PDFInfo
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- CN103373656B CN103373656B CN201310058845.1A CN201310058845A CN103373656B CN 103373656 B CN103373656 B CN 103373656B CN 201310058845 A CN201310058845 A CN 201310058845A CN 103373656 B CN103373656 B CN 103373656B
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- brake shoe
- dip plane
- pressing force
- emergency braking
- guide rail
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Abstract
A kind of elevator, have: brake shoe, inside it, press surface is arranged relatively with guide rail, there is the dip plane and standby recess that apply pressing force, the dip plane applying pressing force is formed in the opposition side of guide rail, have along with towards mentioning direction and move closer to the slope of guide rail during emergency braking, standby recess is formed in than applying the dip plane of pressing force more by the position of rail-sides; Elastic body, it is arranged between upper frame and lower frame, and upper frame and lower frame are arranged on lifting body; Multiple roller, between its dip plane being arranged on the applying pressing force of brake shoe and guiding piece, is arranged along the direction that brake shoe during emergency braking is raised; Stepped roller, it is positioned at the opposite sense of mentioning direction compared with roller, under usual state, between the standby dip plane and guiding piece of brake shoe, and along with the initial stage of brake shoe during emergency braking moves, move from the position of readiness near standby dip plane towards the dip plane applying pressing force and be in contact with it.
Description
Technical field
The present invention relates to a kind of elevator with emergency braking apparatus.
Background technology
Usually, emergency braking apparatus is provided with in traction elevator, when lifting body declines to overrun because there occurs fault, exceed 1.4 times of command speed in its speed before, emergency braking apparatus carries out by governor the action catching speed controller rope, by brake shoe by being pressed on guide rail, by the friction force now produced, lifting body is braked.In general, brake shoe has dip plane in the side contrary with guide rail, because this dip plane contacts with the guiding piece with identical dip plane, so brake shoe while relative to guiding piece upward movement, also moves in the horizontal direction.When the angle of inclination of this dip plane being set as mild degree of dip relative to guide rail, obtaining necessary braking force to make brake shoe and guide rail contact, needing the amount of mentioning strengthening brake shoe, the height dimension of emergency braking apparatus can be caused thus to increase.On the other hand, when the angle of inclination of this dip plane being set as precipitous degree of dip relative to guide rail, the pressing force pressing brake shoe during emergency braking increases, and brake shoe is easily come off, is difficult to guarantee braking force.This is difficult to make one of emergency braking apparatus reason realizing miniaturization.
As the background technology of the art, in Japanese Patent Laid-Open 2004-67270 publication (patent documentation 1), disclose a kind of emergency braking apparatus of elevator, it has: the guide rail guiding lifting body lifting; Brake body, it is arranged on above-mentioned lifting body, arranges relatively with the guide surface of above-mentioned guide rail; Brake body orientated at steep inclinations face, it is arranged on the subtend face relative with above-mentioned guide surface of this brake body, and in lower end than upper end further from above-mentioned guide surface direction surface thereof formed; Brake body gentle slope face, it is arranged on the subtend face relative with above-mentioned guide surface of above-mentioned brake body, tilt in identical direction with above-mentioned brake body orientated at steep inclinations face, lower end is arranged on the position further from above-mentioned guide surface compared with the lower end in above-mentioned brake body orientated at steep inclinations face, relative to horizon, formed with the angular slope milder than above-mentioned brake body orientated at steep inclinations face; Wedge shape brake plate, it is cleat shape, and upward, this wedge shape brake plate is arranged between the dip plane of above-mentioned guide surface and above-mentioned brake body in the front end of cleat shape, is arranged on the position separated with above-mentioned guide surface at ordinary times; Wedge shape brake plate orientated at steep inclinations face, it is arranged on the subtend face relative with above-mentioned brake body dip plane of this wedge shape brake plate, and be arranged in parallel with above-mentioned brake body orientated at steep inclinations face; Wedge shape brake plate gentle slope face, it is arranged on the subtend face relative with above-mentioned brake body dip plane of above-mentioned wedge shape brake plate, and be arranged in parallel with above-mentioned brake body gentle slope face; Orientated at steep inclinations surface roller, it remains on above-mentioned brake body, and is arranged between above-mentioned brake body orientated at steep inclinations face and above-mentioned wedge shape brake plate orientated at steep inclinations face; And gentle slope surface roller, it is remained on above-mentioned brake body by compression coil spring, and is arranged between above-mentioned brake body gentle slope face and above-mentioned wedge shape brake plate gentle slope face.
At first technical literature
Patent documentation
Patent documentation 1 Japanese Patent Laid-Open 2004-67270 publication
; in the emergency braking apparatus disclosed in patent documentation 1; although brake shoe can with the angle of inclination in brake shoe gentle slope face accordingly rapidly and guide rail contact; but the pressing force of brake shoe now to guide rail is not embedded between guide rail and guiding piece by brake shoe and obtain, but obtained by the Compress Spring supporting the gentle slope surface roller contacted with brake shoe gentle slope face.Therefore, in order to obtain the guide rail pressing force carried out needed for emergency braking, till making brake shoe embed between guide rail and guiding piece, need to mention brake shoe further.Thus, the height dimension of emergency braking apparatus can become larger.
Summary of the invention
For this reason, the invention provides a kind of elevator with emergency braking apparatus, the brake shoe of this emergency braking apparatus can obtain with the less amount of mentioning the guide rail pressing force carried out needed for emergency braking.
In order to solve the problem, the invention provides a kind of elevator, it has: be arranged on the guide rail in hoist trunk; By the lifting body of described rail guidance; Brake shoe, inside it, press surface is arranged relatively with described guide rail, and there is the dip plane and standby recess that apply pressing force, the dip plane of this applying pressing force is formed in the side contrary with guide rail, have along with towards mentioning direction and move closer to the slope of described guide rail during emergency braking, this standby recess is formed in the position more by described rail-sides compared with the dip plane of described applying pressing force; Elastic body, described elastic body is arranged between upper frame and lower frame, and described upper frame and lower frame are arranged on described lifting body; Guiding piece, described guiding piece is arranged on the described elastomeric position by described rail-sides, has the dip plane almost parallel with the dip plane of the described applying pressing force of described brake shoe; Multiple roller, between the dip plane that described multiple roller is arranged on the described applying pressing force of described brake shoe and described guiding piece, is arranged along the direction that brake shoe described during emergency braking is raised; And stepped roller, there is the large diameter portion in part setting described standby recess in the normal state, when emergency braking, initial stage action is mentioned along with described brake shoe, described brake shoe is driven towards described rail-sides, and when the amount of mentioning of described brake shoe reaches first amount of mentioning, described large diameter portion moves from described standby recess towards the dip plane of described applying pressing force and contacts with the dip plane of described applying pressing force.
Invention effect
According to elevator of the present invention, can, when the amount of mentioning reaches first amount of mentioning making brake shoe and guide rail contact, make stepped roller etc. immediately between the dip plane and guiding piece of the applying pressing force of brake shoe.Therefore, after more than first amount of mentioning, elastic body can be used by the inner side press surface of brake shoe by being pressed on guide rail, the time required till the pressing force producing necessity can be shortened to.In addition, due to the always amount of mentioning produced needed for necessary pressing force can be reduced, so compared with prior art, emergency braking apparatus size in the height direction can be reduced, emergency braking apparatus can be made to realize miniaturization.
Accompanying drawing explanation
Fig. 1 is the structural representation of the elevator of the emergency braking apparatus had involved by one embodiment of the invention.
Fig. 2 is the section drawing of the usual state representing the emergency braking apparatus shown in Fig. 1.
Fig. 3 is the block diagram of the main portion representing the emergency braking apparatus shown in Fig. 2.
Fig. 4 is the section drawing of the emergency braking midvoyage condition representing the emergency braking apparatus shown in Fig. 2.
Fig. 5 is the section drawing of the emergency braking completion status representing the emergency braking apparatus shown in Fig. 2.
Fig. 6 is the characteristic map representing relation between the amount of mentioning of the emergency braking apparatus shown in Fig. 2 and pressing force.
Fig. 7 is the block diagram of the main portion of the emergency braking apparatus representing other embodiments of the present invention.
Fig. 8 is the action comparative descriptions figure of the emergency braking apparatus shown in Fig. 1 and existing emergency braking apparatus.
Nomenclature
1 lift car
2 guide rails
4 emergency braking apparatus
5 upper frames
6 lower frame
7 elastic bodys
8A, 8B guiding piece
9A, 9B brake shoe
10A, 10B roller
The stepped roller of 10D
13A, 13B large diameter portion
14 path parts
The dip plane of 15 applying pressing forces
16 standby recesses
The standby dip plane of 16A
17,18 first sloped recess
19,20 second sloped recess
21,22 guide recess
25,26 fitting projection
Detailed description of the invention
Referring to accompanying drawing, embodiments of the invention are described.
Fig. 1 is the structural representation of the elevator of the emergency braking apparatus had involved by one embodiment of the invention.
This traction elevator have to carry out being elevated in hoist trunk lifting body (such as lift car 1), be erected to be arranged on the hoist cable 3 be connected with lift car 1 for paired guide rail 2, one end of guiding lift car 1 to be elevated in hoist trunk and clamp guide rail 2 when lift car 1 being detected to overrun and to decline with the emergency braking apparatus 4 braked lift car 1.
Fig. 2 is the section drawing of the emergency braking apparatus 4 being in usual state.
Emergency braking apparatus 4 clamps guide rail 2 by brake shoe 9A, the 9B being arranged on guide rail 2 both sides.Due to the structure of emergency braking apparatus 4 symmetrically shape, thus this with the structure in left side for representative is described.As shown in Figure 2, emergency braking apparatus 4 has the upper frame 5 and lower frame 6 that are fixed on lift car 1 bottom, and is provided with elastic body 7, and this elastic body 7 is arranged between these two frameworks 5,6, when being subject to power toward the outer side, there is elastic deformation and producing screen resilience.The inner side of elastic body 7 is provided with guiding piece 8A, 8B, and the inner side of guiding piece 8A, 8B has dip plane respectively, and these dip plane are along with moving closer to guide rail 2 upward.Brake shoe 9A, 9B of the setting relative to guide rail 2 of inner side press surface have the dip plane 15 and standby recess 16 that apply pressing force, the dip plane 15 of this applying pressing force is arranged on the side contrary with guide rail 2, have along with towards moving direction during emergency braking gradually near the slope of guide rail 2, standby recess 16 for the dip plane 15 than this applying pressing force more by guide rail 2 side position on form standby dip plane 16A.
In the dip plane 15 of the applying pressing force of brake shoe 9A, 9B and between guiding piece 8A, 8B, along during brake shoe 9A, 9B emergency braking mention direction and graphic upper section is provided with multiple roller 10A, 10B.Be provided with stepped roller 10D being arranged in the position of mentioning the opposite sense in direction and the below of figure compared with roller 10A, 10B, this stepped roller 10D is in the normal state at the standby dip plane 16A of brake shoe 9A, 9B and between guiding piece 8A, 8B, and when promptly mentioning, along with the initial stage of brake shoe 9A, 9B moves, move towards the dip plane 15 applying pressing force from standby dip plane 16A, and contact with the dip plane 15 applying pressing force.Between roller 10B and stepped roller 10D, there is stepped roller 10C, this stepped roller 10C is in the normal state at the standby dip plane 16A of brake shoe 9A, 9B and between guiding piece 8A, 8B, and when emergency braking, move towards the dip plane 15 applying pressing force along with promptly the mentioning action of brake shoe 9A, 9B.Upper frame 5 is provided with hill holder 12A, the 12B of the maximum amount of mentioning for adjusting brake shoe 9A, 9B.In addition, also have and not shown mention mechanism, detect lift car 1 overrun decline time, this is mentioned mechanism and brake shoe 9A, 9B is mentioned upward.
Each roller 10A ~ 10D in the inner side of guiding piece 8A, along brake shoe 9A mention direction separate regulation interval arrange, the quantity of roller is not limited in graphic quantity.Each roller 10A ~ 10D is divided into two groups when being in graphic usual state, as wherein stepped roller 10C, 10D of one group, initial stage in the normal state or when emergency braking, between the standby dip plane 16A and guiding piece 8A of brake shoe 9A.As common roller 10A, 10B position in the normal state not between the dip plane 15 and guiding piece 8A of the applying pressing force of brake shoe 9A of another group, and when emergency braking, along with brake shoe 9A is raised, roller 10A, 10B of another group move to the position between the dip plane 15 of the applying pressing force of brake shoe 9A and guiding piece 8A.
Fig. 3 is the block diagram of the main portion representing emergency braking apparatus 4.
As shown in Figure 3, stepped roller 10D has external diameter a pair large diameter portion 13A, the 13B identical with other roller 10A ~ 10B and connects two large diameter portion 13A, the S. A. of 13B or path part 14.The structure being positioned at the stepped roller 10C of the top of stepped roller 10D is identical with stepped roller 10D.Roughly cylindrically, external diameter is identical with a pair large diameter portion 13A, the 13B in stepped roller 10C, 10D for other roller 10A ~ 10B, and has the size axial length equal with the size between large diameter portion 13A, 13B.
Brake shoe 9A has standby recess 16 and standby dip plane 16A, 16B, standby recess 16 passes through in the both sides of the Width of brake shoe 9A, carry out cutting etc. to the position of top leading section to axial centre portion and formed, standby dip plane 16A, 16B are formed in the bottom surface of this standby recess.In addition, the part of brake shoe 9A between whole inferior portion and two standby recesses is formed with the dip plane 15 applying pressing force.
Standby recess 16 for being in the large diameter portion 13A of stepped roller 10C, 10D of usual state, a part of 13B carries out standby.In the normal state, large diameter portion 13A, 13B respectively dip plane standby with two 16A, 16B contact, and path part 14 does not then contact with the dip plane 15 applying pressing force.The mild dip plane for making large diameter portion 13A, 13B carry out relative movement is reposefully formed in the end of standby dip plane 16A, 16B of the axial middle body being positioned at brake shoe 9A.In addition, the mild dip plane for making roller 10A, 10B carry out relative movement is reposefully formed with at the leading section of mentioning direction of the dip plane 15 applying pressing force.
In the normal state, the inner side press surface of brake shoe 9A separates with guide rail 2, separates the distance of regulation between the two, and the standby dip plane 16A of brake shoe 9A contacts with large diameter portion 13A, the 13B of stepped roller 10C, 10D.Stepped roller 10D is positioned near the mild dip plane place or this mild dip plane that are formed in and apply the dip plane 15 of pressing force and the boundary member of standby dip plane 16A.When carrying out emergency braking, mention action initial stage what mentioned by brake shoe 9A upward, the inner side press surface of brake shoe 9A moves to contact with guide rail 2.When the inner side press surface of brake shoe 9A has carried out contacting with guide rail 2, large diameter portion 13A, 13B have moved from standby dip plane 16A towards the dip plane 15 applying pressing force and have contacted with the dip plane 15 applying pressing force.
When the amount of mentioning of brake shoe 9A when this saying makes emergency braking into when also the inner side press surface of brake shoe 9A can have been carried out contacting with guide rail 2 reaches the amount of the mentioning H1 of regulation.Therefore, when alternatively becoming the amount of mentioning of the brake shoe 9A when emergency braking to reach the amount of the mentioning H1 of regulation, large diameter portion 13A, 13B move from standby dip plane 16A towards the dip plane 15 applying pressing force.The time opening of movement can adjust according to actual conditions.In addition, also can consider the distance between the inner side press surface of brake shoe 9A and guide rail 2, standby dip plane 16A and apply dip plane 15 distance in the depth direction of pressing force, the length of dip plane between the two and the stepped roller 10D usually under state position etc. basis on decide time opening of movement.
Under the usual state shown in Fig. 2, a pair large diameter portion 13A, the 13B of stepped roller 10C, 10D between the standby dip plane 16A and guiding piece 8A of brake shoe 9A contact with standby dip plane 16A, 16B respectively in the mode can carrying out relative movement along standby dip plane 16A, 16B.Wherein, the rightabout stepped roller 10D mentioning direction of brake shoe 9A when being positioned at emergency braking is positioned near the lower end of standby dip plane 16A.In the normal state, other roller 10A, 10B be not between guiding piece 8A and brake shoe 9A.Wherein, the rightabout roller 10B mentioning direction of brake shoe 9A when being positioned at emergency braking is positioned at the position more closer to the top than the top leading section of brake shoe 9A, now, and be formed between the standby dip plane 16A of brake shoe 9A and the dip plane 15 applying pressing force and also there is no contact relation.
Below the brake shoe guiding device be formed near the brake shoe 9A shown in Fig. 2 is described.
This brake shoe guiding device has the structure of brake shoe 9A side and the structure of guiding piece 8A side, is first described the structure of brake shoe 9A side below.Be formed with a pair guide recess 21,22 in the side of brake shoe 9A, this for when by mentioning mechanism and being mentioned by brake shoe 9A, guides the movement of brake shoe 9A to guide recess 21,22 upward.This has relative to the first sloped recess 17,18 of horizon gentle slope and the second sloped recess 19,20 of sharply tilting relative to horizon guide recess 21,22, and on the whole, these sloped recess are combined to form く word shape.
When brake shoe 9A is mentioned upward, at the initial stage of emergency braking, the direction that the first sloped recess 17,18 impels brake shoe 9A to contact towards press surface inside it with guide rail 2 is further moved.Therefore, compared with the second sloped recess 19,20, the first sloped recess 17,18 is arranged to gently tilt relative to horizon.On the other hand, the second sloped recess 19,20 moves towards mentioning direction further for making brake shoe 9A in the latter stage of emergency braking.
Below the structure of the guiding piece 8A side of brake shoe guiding device is described.
An end winding support of a pair side guiding elements 23,24 is on guiding piece 8A.This is to another end of side guiding elements 23,24, and in order to avoid hindering the movement of brake shoe 9A, the sidepiece along brake shoe 9A extends.Another end of a pair side guiding elements 23,24 has the mode of movement can embed fitting projection 25,26 in guide recess 21,22 respectively.Be arranged to the engomphosis relation between guide recess 21,22 and fitting projection 25,26 can not to have influence on the travelling performance that brake shoe 9A should have.Such as, preferably guide recess 21,22 and fitting projection 25,26 are connected to after the inner side press surface of brake shoe 9A contacts with guide rail 2, between the second sloped recess 19,20 and fitting projection 25,26, there is enough large play.Especially be preferably arranged to the guide surface be positioned on the left of the second sloped recess 19,20 do not come in contact with fitting projection 25,26.
The structure of this brake shoe guiding device is not limited in graphic structure, also can adopt other structure.Such as, the component with fitting projection 25,26 suitable convexs is set in the side of brake shoe 9A, on the bigger side guiding elements 23,24 of volume, forms the component with guide recess 21,22 suitable matrixs simultaneously, and be arranged to contrary relation by concavo-convex.Whatsoever the brake shoe guiding device of structure can, by arranging brake shoe guiding device, can at the initial stage of emergency braking, along with brake shoe 9A is mentioned upward, contact with guide rail 2 by guiding the inner side press surface making rapidly brake shoe 9A, further, when usually running, on the assigned position that the inner side press surface that effectively brake shoe 9A can be remained on brake shoe 9A can not come in contact with guide rail 2.
Fig. 4 is the section drawing of the action midvoyage condition of the emergency braking apparatus represented when the brake shoe being in usual state having been mentioned upward the first amount of mentioning H1, and Fig. 5 is the section drawing of action completion status when representing emergency braking.
Under the usual state of the emergency braking apparatus 4 shown in Fig. 2, brake shoe 9A is kept on the position that within it press surface can not come in contact with guide rail 2 effectively by above-mentioned brake shoe guiding device.On the other hand, at the same state, stepped roller 10C, 10D contact with the standby dip plane 16A of brake shoe 9A, and fitting projection 25,26 is positioned at the topmost of guide recess 21,22.
When detect under this state lift car 1 overrun decline time, mention mechanism action.By mentioning mechanism, after brake shoe 9A has been mentioned upward the first amount of mentioning H1, as shown in Figure 4, large diameter portion 13A, the 13B of stepped roller 10D move from the standby dip plane 16A of brake shoe 9A to the dip plane 15 applying pressing force and are in contact with it.Now, by being formed in the dip plane between standby dip plane 16A and the dip plane 15 applying pressing force, the force component of brake shoe 9A movement is upward made to be converted into the force component making brake shoe 9A towards guide rail 2 side movement.Therefore, brake shoe 9A moves towards guide rail 2 side, and inside it, press surface and guide rail 2 come in contact.Meanwhile, fitting projection 25,26 moves along the first sloped recess 17,18 of guide recess 21,22, guides brake shoe 9A to move towards guide rail 2 side reposefully.
When reaching this first amount of mentioning H1, the position of roller 10B and stepped roller 10D between the dip plane 15 and guiding piece 8A of the applying pressing force of brake shoe 9A.Now, stepped roller 10C does not contact with the dip plane 15 of the applying pressing force of brake shoe 9A.After this, under the state shown in fig. 5, stepped roller 10C, 10D and roller 10A, 10B are all between the dip plane 15 and guiding piece 8A of the applying pressing force of brake shoe 9A.
As mentioned above, As time goes on, the position of roller between the dip plane 15 and guiding piece 8A of the applying pressing force of brake shoe 9A changes, and thus, elastic deformation occurs elastic body 7, and its screen resilience increases continuously.This screen resilience serves the effect of the power pressed towards guide rail 2 by brake shoe 9A.Now, the fitting projection 25,26 forming brake shoe guiding device is mobile in the second sloped recess 19,20, owing to connecting in the mode with play between the two, so pressing force can not be restricted.
After this, the top leading section of the brake shoe 9A of emergency braking apparatus 4 contacts with hill holder 12A, forms the final condition of emergency braking.The force of elastic force 7 reaches the pressing force F of regulation before brake shoe 9A abuts with hill holder 12A, plays a role as the power be securely fixed on guide rail 2 by lift car 1.In the emergency braking apparatus 4 of reality, the force of elastic body 7 is played a role by brake shoe 9A, the 9B being arranged on guide rail 2 both sides simultaneously, clamps guide rail 2 securely to brake.
Fig. 6 is the characteristic map of the change of the pressing force of the emergency braking apparatus 4 pairs of guide rails 2 representing above-described embodiment.
The longitudinal axis of Fig. 6 represents the pressing force to guide rail 2, and transverse axis represents the amount of mentioning of brake shoe 9A.Characteristic curve 27 represents the change of the pressing force of emergency braking apparatus of the prior art, characteristic curve 28 represents the change of the pressing force of emergency braking apparatus of the prior art shown in patent documentation 1, and characteristic curve 29 represents the change of the pressing force of the emergency braking apparatus of above-described embodiment.
Fig. 8 is the action comparative descriptions figure of above-mentioned emergency braking apparatus 4 and emergency braking apparatus 30,31 of the prior art.
The longitudinal axis of Fig. 8 represents the passing of time.Emergency braking apparatus 30 of the prior art adopts the structure shown in patent documentation 1, show the usual state (30a) relative to the topmost portion of figure in the drawings, operating state during emergency braking As time goes on, according to the order of sequence from the situation that (30b) changes to (30d).In addition, of the prior art other emergency braking apparatus 31 adopt be very common structure, show the usual state (31a) relative to the topmost portion of figure in the drawings, operating state during emergency braking As time goes on, according to the order of sequence from the situation that (31b) changes to (31c).
Referring to Fig. 8, each characteristic curve 27 ~ 29 shown in Fig. 6 is described.
In emergency braking apparatus 4, under usual state (4a), along with mention mechanism brake shoe 9A is lifted to the position of the first amount of mentioning H1 time, the contact condition (4b) that the inner side press surface becoming brake shoe 9A contacts with guide rail 2.Usually, when brake shoe 9A moves towards guide rail 2 side, between brake shoe 9A and roller 10A ~ 10D, produce the gap suitable with the amount of movement of brake shoe 9A, this gap causes the contact of brake shoe 9A after this and roller 10A ~ 10D to be delayed.And in the present embodiment, owing to have employed stepped roller 10D, large diameter portion 13A, the 13B of stepped roller 10D move from standby dip plane 16A towards the dip plane 15 applying pressing force.Therefore, when brake shoe 9A being lifted to the position of the first amount of mentioning H1, as shown in characteristic curve 29, the pressing force to guide rail 2 is produced at once.After this, when the amount of mentioning of brake shoe 9A reaches the second amount of mentioning H2 further, reach the pressing force F of regulation, the top leading section of brake shoe 9A contacts with hill holder 12A, forms the final condition (4c) of emergency braking.
On the other hand, do not have in the emergency braking apparatus 31 of the existing brake shoe 32 of standby dip plane 16A and the prior art of general roller 33 in employing, do not force the structure that the inner side press surface of brake shoe 32 is contacted with guide rail 2 at the initial stage of emergency braking.Therefore, as shown in characteristic curve 27, after have passed through considerable time, when the amount of mentioning of brake shoe 32 reaches H3, the contact condition (31b) that the inner side press surface becoming brake shoe 32 contacts with guide rail 2.After this, the roller 33 contacted by the dip plane of the applying pressing force with brake shoe 32 makes elastic body 7 deform, and applies guide rail pressing force thus.Therefore, as shown in characteristic curve 27, from the amount of mentioning H3, increase guide rail pressing force by the distortion of elastic body 7, and reach the pressing force F of regulation at the amount of mentioning H5 place, form final condition (31c).
In addition, disclosed in patent documentation 1, emergency braking apparatus 30 has mobile device, and this mobile device comprises the coil spring 34 forcing the inner side press surface of brake shoe 32 is contacted with guide rail 2.Therefore, as shown in characteristic curve 28, when brake shoe 9A has been mentioned the first amount of mentioning H1, the contact condition (30b) that the inner side press surface becoming brake shoe 32 contacts with guide rail 2.After this, produced brake shoe 32 by the pressing force be pressed on guide rail 2 by coil spring 34., because the distortion of above-mentioned mobile device by coil spring 34 is moved, so as shown in characteristic curve 28, the pressing force produced by the distortion of coil spring 34 is smaller, and the increase of pressing force is slow.After have passed through considerable time, when the amount of mentioning of brake shoe 32 reaches the amount of mentioning H3, become the roller contact state (30c) that roller 33 contacts with the dip plane 15 of the applying pressing force of brake shoe 32.After this, with the rate of change identical with characteristic curve 27, start to apply guide rail pressing force by the distortion of elastic body 7, and when the amount of mentioning reaches H4, pressing force reaches the pressing force F of regulation, top and the hill holder 12A of brake shoe 32 come in contact, and form the final condition (30d) of emergency braking.
By the emergency braking apparatus 30 shown in characteristic curve 28 compared with the existing general emergency braking apparatus 31 shown in characteristic curve 27, the time needed for guide rail pressing force F generation made needed for emergency braking can be shortened., compared with the emergency braking apparatus 4 shown in characteristic curve 29, by the emergency braking apparatus 30 shown in characteristic curve 28 after being lifted to the first amount of mentioning H1, the ascending velocity of its pressing force is slow.This is because from the amount of mentioning H1 to the amount of mentioning H3, it applies the cause of pressing force by coil spring 34.On the other hand, by the emergency braking apparatus 4 shown in characteristic curve 29, after reaching the amount of mentioning H1, elastic body 7 produces pressing force at once, so the time required till can shortening to the pressing force F reached needed for emergency braking.
In addition, also there are differences in the always amount of mentioning when producing the guide rail pressing force F needed for emergency braking.That is, the always amount of the mentioning H29 (amount of the mentioning H2-amount of mentioning H1) of characteristic curve 29 is less than the always amount of the mentioning H28 (amount of the mentioning H4-amount of mentioning H1) of characteristic curve 28.Therefore, by the emergency braking apparatus 4 shown in characteristic curve 29 compared with the emergency braking apparatus 30 shown in characteristic curve 28, miniaturization can be realized in short transverse.
In the above-described embodiments, in the normal state, utilize the standby recess be formed on brake shoe 9A, make large diameter portion 13A, the 13B of stepped roller 10C, 10D standby in guide rail 2 side.In the above description, the outer peripheral portion of large diameter portion 13A, 13B contacts with standby dip plane 16A in the normal state, but the present invention might not need to make the outer peripheral portion of large diameter portion 13A, 13B contact with standby dip plane 16A in the normal state, also can be arranged to make a part of large diameter portion 13A, 13B standby in standby recess 16 in the normal state.
As mentioned above, the elevator of the present embodiment has: be arranged on the guide rail 2 in hoist trunk; The lifting body 1 guided by guide rail 2; Brake shoe 9A, 9B, the inner side press surface of this brake shoe 9A, 9B is arranged relatively with guide rail 2, and there is the dip plane 15 and standby recess 16 that apply pressing force, the dip plane 15 of this applying pressing force is formed in the side contrary with guide rail, have along with towards mentioning direction and moving closer to the slope of guide rail 2 during emergency braking, this standby recess 16 has standby dip plane 16A, and this standby dip plane 16A is formed in the position of dip plane 15 closer to guide rail 2 side than applying pressing force; Elastic body 7, this elastic body 7 is arranged between upper frame 5 and lower frame 6, and this upper frame 5 and lower frame 6 are arranged on lifting body 1; Guiding piece 8A, 8B, this guiding piece 8A, 8B are arranged on the position by guide rail 2 side of elastic body 7, have the dip plane almost parallel with the dip plane 15 of the applying pressing force of brake shoe 9A, 9B; Multiple roller 10A, 10B, these rollers 10A, 10B be arranged on the applying pressing force of brake shoe 9A, 9B dip plane 15 and between guiding piece 8A, 8B, arrange along direction that brake shoe 9A, 9B during emergency braking are raised; And stepped roller 10C, 10D, there is a part and be arranged on the large diameter portion 13A, the 13B that are in the standby recess 16 of usual state, initial stage action is mentioned along with brake shoe 9A, 9B, brake shoe 9A, 9B are driven towards guide rail 2 side, and when brake shoe 9A, 9B reach first amount of mentioning, make large diameter portion 13A, 13B move from standby recess 16 towards the dip plane 15 applying pressing force and contact with the dip plane 15 applying pressing force.
According to this elevator, in the normal state, the standby recess 16 with standby dip plane 16A can be utilized to make large diameter portion 13A, the 13B of stepped roller 10C, 10D standby in guide rail 2 side, therefore, mention the action initial stage when emergency braking, brake shoe 9A, 9B can be rapidly to guide rail 2 side and drive.Can, when the amount of mentioning reaches first amount of mentioning making brake shoe 9A, 9B contact with guide rail 2, make stepped roller 10D and other roller 10B in the dip plane 15 of the applying pressing force of brake shoe 9A, 9B and between guiding piece 8A, 8B immediately.Therefore, after reaching first amount of mentioning, elastic body 7 can be used by the inner side press surface of brake shoe 9A, 9B by being pressed on guide rail 2, the time required till the pressing force producing necessity can be shortened to thus.In addition, due to can narrow down to produce necessary pressing force till the required always amount of mentioning, so compared with prior art, emergency braking apparatus 4 size in the height direction can be reduced, emergency braking apparatus 4 can be made thus to realize miniaturization.
In addition, in the elevator of the present embodiment, be provided with brake shoe guiding device at guiding piece 8A, 8B and between brake shoe 9A, 9B further, when emergency braking, mention the action initial stage at brake shoe 9A, 9B, this brake shoe guide means guide brake shoe 9A, 9B move towards guide rail 2 side.Therefore, easily brake shoe 9A, 9B of being in usual state can be remained on the suitable position do not contacted with guide rail 2 by brake shoe guiding device, and when brake shoe 9A, 9B being mentioned carrying out emergency braking, brake shoe 9A, 9B can be made to move reposefully, the inner side press surface of brake shoe 9A, 9B is contacted with guide rail 2.
Again, in the elevator of the present embodiment, described first amount of mentioning refers to when emergency braking, mentions the action initial stage at brake shoe 9A, 9B, brake shoe 9A, 9B is moved towards guide rail 2 side and makes the inner side press surface of brake shoe 9A, 9B move to the amount of mentioning when roughly contacting with guide rail 2.According to the elevator of the present embodiment, the action initial stage is mentioned at emergency braking, initial stage action is mentioned along with brake shoe 9A, 9B, brake shoe 9A, 9B are driven towards guide rail 2 side, can, when the amount of mentioning reaches first amount of mentioning making brake shoe 9A, 9B contact with guide rail 2, the inner side press surface of brake shoe 9A, 9B be contacted with guide rail 2.After this, can use at the dip plane 15 of the applying pressing force of brake shoe 9A, 9B and the stepped roller 10D between guiding piece 8A, 8B and other roller 10B immediately, by elastic body 7 by the inner side press surface of brake shoe 9A, 9B by being pressed on guide rail 2.
In addition, in the emergency braking apparatus 4 of above-described embodiment, use brake shoe guiding device, this brake shoe guiding device has the fitting projection 25,26 of the first sloped recess 17,18 movement along guiding groove 21,22.When brake shoe 9A has been mentioned the first amount of mentioning H1 upward from the usual state shown in Fig. 2, as shown in Figure 4, the inner side press surface of brake shoe 9A has contacted with guide rail 2.In addition, in other examples, also other the brake shoe guiding device that structure is different from this brake shoe guiding device can be adopted, also can arrange spring installation that one end is connected with guiding piece 8A, be arranged on this spring installation the other end roller and be formed in the inclined contact surface of brake shoe 9A side, when being formed as being mentioned by brake shoe 9A carrying out emergency braking by this inclined contact surface, change the action direction of elastic force.
According to said structure, when brake shoe 9A can be mentioned carrying out emergency braking, by spring installation, brake shoe 9A being moved, as shown in Figure 4, making the inner side press surface of brake shoe 9A move towards guide rail 2 side and contact with this guide rail 2.When contacting with guide rail 2 by being arranged in inner side press surface, stepped roller 10D being moved from standby dip plane 16 towards the dip plane 15 applying pressing force, then can obtain the effect roughly the same with previous embodiment.
As mentioned above, the effect of roller 10A ~ 10D is to make not shown lifting device carrying out with mentioning stable action brake shoe 9A, and makes elastic body 7 produce pressing force.Each roller 10A ~ 10D is supported for and can separately rotates.In addition, also can construct each roller 10A ~ 10D being arranged in pairs in brake shoe 9A side carry out modularity and be combined into a roller devices.Equally, also can carry out modularity to each roller 11A ~ 11D being arranged on brake shoe 9B side and be combined into a roller devices.
In above-mentioned emergency braking apparatus 4, employ two stepped roller 10C, 10D, but the roller also can being arranged to be positioned to major general foot is arranged to stepped roller 10D and omits stepped roller 10C.
Fig. 7 is the block diagram of the main portion of the emergency braking apparatus 4 representing other embodiments of the present invention.
As shown in Figure 7, stepped roller 10C, 10D have an external diameter large diameter portion 13A identical with other rollers 10A, 10B and the S. A. be connected with the both sides of large diameter portion 13A or path part 14.Other roller 10A, 10B roughly cylindrically, and have the external diameter identical with the large diameter portion 13A of stepped roller 10C, 10D.
Being formed through at the centre portion of the Width of brake shoe 9A and cutting and the standby dip plane 16A axially extending to centre portion from the leading section of top of formation, retaining the dip plane 15 along mentioning the applying pressing force that direction extends in the both sides of Width.Standby dip plane 16A is formed for the standby standby recess 16 of the large diameter portion 13A of stepped roller 10C, 10D.The dip plane 15 applying pressing force is the parts contacted with roller 10A, 10B.Large diameter portion 13A and the diameter Relationship of path part 14 are set to when large diameter portion 13A contacts with standby dip plane 16A and carries out relative movement, and path part 14 can not contact with the dip plane 15 applying pressing force and hinder the movement of large diameter portion 13A.Be formed with mild dip plane in the end of mentioning the standby dip plane 16A of the middle part in direction being positioned at brake shoe 9A, this mild dip plane relatively moves to for making large diameter portion 13A the position contacted with the dip plane 15 applying pressing force reposefully from standby dip plane 16A.Equally, the mild dip plane for making roller 10A, 10B carry out relative movement reposefully is also formed with at the leading section of mentioning direction of the dip plane 15 applying pressing force.Other structure is identical with previous embodiment, omits its detailed description at this.
Above-mentioned stepped roller 10C, 10D only have a large diameter portion 13A, so structure is simple.In addition, due to the standby dip plane 16A of a corresponding brake shoe 9A also pattern of wants one, so can simplified structure.The same with previous embodiment, under being arranged in the usual state shown in Fig. 2, when brake shoe 9A is mentioned upward the first amount of mentioning H1, as shown in Figure 4, the inner side press surface relative with guide rail 2 of brake shoe 9A is contacted with guide rail 2, same effect can be obtained thus.
In addition, in each embodiment above-mentioned, be illustrated as the occasion of stepped roller using stepped roller 10C, 10D, as long as but brake shoe 9A, 9B when being arranged in emergency braking mention the action initial stage, when brake shoe 9A, 9B are driven towards guide rail 2 side, make stepped roller 10D or its part at the standby dip plane 16A of brake shoe 9A, 9B and between guiding piece 8A, 8B, then also can adopt other structure.
The present invention is not limited in above-described embodiment, can comprise various variation.Such as, for the ease of understanding the present invention, above-described embodiment is described in detail, but has there is no need whole employing in the structure be illustrated above.In addition, a part for the structure of an embodiment can also be applied in the structure of other embodiment, and also can by the textural association of other embodiments in the structure of some embodiments.Also for a part for the structure of each embodiment, adding, delete or replacing of other structures can be carried out.
Claims (3)
1. an elevator, is characterized in that, has:
Be arranged on the guide rail in hoist trunk; By the lifting body of described rail guidance; Brake shoe, inside it, press surface is arranged relatively with described guide rail, and there is the dip plane and standby recess that apply pressing force, the dip plane of this applying pressing force is formed in the side contrary with guide rail, have along with towards mentioning direction and move closer to the slope of described guide rail during emergency braking, this standby recess is formed in the position more by described rail-sides compared with the dip plane of described applying pressing force; Elastic body, described elastic body is arranged between upper frame and lower frame, and described upper frame and lower frame are arranged on described lifting body; Guiding piece, described guiding piece is arranged on the described elastomeric position by described rail-sides, has the dip plane almost parallel with the dip plane of the described applying pressing force of described brake shoe; Multiple roller, between the dip plane that described multiple roller is arranged on the described applying pressing force of described brake shoe and described guiding piece, is arranged along the direction that brake shoe described during emergency braking is raised; And stepped roller, there is the large diameter portion in part setting described standby recess in the normal state, when emergency braking, initial stage action is mentioned along with described brake shoe, described brake shoe is driven towards described rail-sides, and when the amount of mentioning of described brake shoe reaches first amount of mentioning, described large diameter portion moves from described standby recess towards the dip plane of described applying pressing force and contacts with the dip plane of described applying pressing force.
2. elevator as claimed in claim 1, is characterized in that,
Between described guiding piece and described brake shoe, be provided with brake shoe guiding device further, when emergency braking, mention the action initial stage at described brake shoe, described brake shoe guiding device makes described brake shoe move towards described rail-sides.
3. elevator as claimed in claim 1, is characterized in that,
Described first amount of mentioning refers to when emergency braking, mentions the action initial stage at described brake shoe, make described brake shoe towards described rail-sides move and make the described inner side press surface of described brake shoe move to roughly with the amount of mentioning during described guide rail contact.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-100003 | 2012-04-25 | ||
| JP2012100003A JP5926603B2 (en) | 2012-04-25 | 2012-04-25 | elevator |
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| CN103373656A CN103373656A (en) | 2013-10-30 |
| CN103373656B true CN103373656B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310058845.1A Active CN103373656B (en) | 2012-04-25 | 2013-02-25 | Elevator |
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| JP (1) | JP5926603B2 (en) |
| CN (1) | CN103373656B (en) |
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| JP6058176B2 (en) * | 2014-02-14 | 2017-01-11 | 三菱電機株式会社 | Elevator equipment |
| WO2017050647A1 (en) * | 2015-09-23 | 2017-03-30 | Inventio Ag | Safety catch device for a lift system |
| CN109279474B (en) * | 2017-07-21 | 2021-05-07 | 奥的斯电梯公司 | Safety device, elevator safety system and elevator system |
| CN111750917A (en) * | 2019-08-25 | 2020-10-09 | 广东小天才科技有限公司 | Method and device for identifying inter-floor movement mode and intelligent equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6475383A (en) * | 1987-09-18 | 1989-03-22 | Hitachi Ltd | Emergency stop device for elevator |
| JP2002241064A (en) * | 2001-02-15 | 2002-08-28 | Fujitec Co Ltd | Safety device for elevator |
| JP2004067270A (en) * | 2002-08-02 | 2004-03-04 | Mitsubishi Electric Corp | Emergency stop device for elevator |
| CN100337896C (en) * | 2002-12-04 | 2007-09-19 | 三菱电机株式会社 | Elevator braking device |
| WO2011078862A1 (en) * | 2009-12-23 | 2011-06-30 | Otis Elevator Company | Elevator braking device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI103962B (en) * | 1996-11-07 | 1999-10-29 | Kone Corp | catching device |
| JP3611543B2 (en) * | 2001-11-21 | 2005-01-19 | 株式会社日立製作所 | Elevator emergency stop device |
| JP4672656B2 (en) * | 2004-11-16 | 2011-04-20 | 三菱電機株式会社 | Elevator safety device |
-
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- 2012-04-25 JP JP2012100003A patent/JP5926603B2/en active Active
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- 2013-02-25 CN CN201310058845.1A patent/CN103373656B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6475383A (en) * | 1987-09-18 | 1989-03-22 | Hitachi Ltd | Emergency stop device for elevator |
| JP2002241064A (en) * | 2001-02-15 | 2002-08-28 | Fujitec Co Ltd | Safety device for elevator |
| JP2004067270A (en) * | 2002-08-02 | 2004-03-04 | Mitsubishi Electric Corp | Emergency stop device for elevator |
| CN100337896C (en) * | 2002-12-04 | 2007-09-19 | 三菱电机株式会社 | Elevator braking device |
| WO2011078862A1 (en) * | 2009-12-23 | 2011-06-30 | Otis Elevator Company | Elevator braking device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5926603B2 (en) | 2016-05-25 |
| CN103373656A (en) | 2013-10-30 |
| JP2013227116A (en) | 2013-11-07 |
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