CN101602461A - The safety device of elevator - Google Patents

The safety device of elevator Download PDF

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Publication number
CN101602461A
CN101602461A CNA2009101406401A CN200910140640A CN101602461A CN 101602461 A CN101602461 A CN 101602461A CN A2009101406401 A CNA2009101406401 A CN A2009101406401A CN 200910140640 A CN200910140640 A CN 200910140640A CN 101602461 A CN101602461 A CN 101602461A
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CN
China
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mentioned
axle
emergency braking
voussoirs
braking device
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CNA2009101406401A
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CN101602461B (en
Inventor
浦田尚纪
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Toshiba Elevator and Building Systems Corp
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Toshiba Elevator Co Ltd
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Abstract

The safety device of elevator (20) has: axle (30), and an end side is configured on first emergency braking device, and the other end side is configured on second emergency braking device, and can rotate; Voussoir pushing cam (31) is arranged on the axle (30), by the rotation of axle, pushes 2 voussoirs (40) of first emergency braking device (21) and 2 voussoirs (40) of second emergency braking device (22); Lever (32), a side and the speed controller rope of adapter shaft will be passed to axle (30) because of the power of the caused by relative motion between speed controller rope and the car; Switching manipulation cam (33) is by the rotary manipulation source switch of axle; And spring (34), adapter shaft makes axle not be rotated under the effect smaller or equal to the power that speed controller rope produced.

Description

The safety device of elevator
Technical field
The present invention relates to the safety device of elevator, relate in particular to the elevator car safety of (safety link) mechanism that possesses safe connecting rod, this safe connecting rod mechanism has rotatable axle (shaft) and lever (lever) etc.
Background technology
In order when the car of elevator rises or descends for a certain reason and with unusual high speed, car safety ground to be stopped, car or counterweight are provided with elevator car safety.
When car or counterweight rose or descend with unusual high speed for a certain reason, the safety device of above-mentioned elevator detected this high-revolving rising or decline, makes the safe connecting rod mechanism action, so that car safety is stopped.
Figure 10 is illustrated in the structure of the general elevator of the safety device that the elevator that possesses safe connecting rod mechanism is set on the car 103.Safe connecting rod mechanism has a pair of safety member (safety) 105 and safe connecting rod 106.
In the structure of elevator shown in Figure 10, on the wall of lift path 101, be provided with 2 guide rails 102, thereby car 103 be directed device 104 can lifting along 102 guiding of above-mentioned guide rail.The underbeam 103 of car 103 bottoms is provided with a pair of safety member 105.
Each safety member 105 has a pair of voussoir (wedge), and in the urgent moment, safe connecting rod 106 moves a pair of voussoir of safety member 105, clamps the both sides of guide rail 102 by a pair of voussoir and brakes, and car 103 is stopped.In order to make safety member 105 actions, be provided with the safe connecting rod 106 that rotates freely in the bottom of car 103.One end of this safe connecting rod 106 is connected with overspeed governor 108 via overspeed governor head combination (governor rope hitch) 107.
108 of overspeed governors are at the velocity limiter 108A on the top that is arranged on lift path 101 and be arranged near the pit of bottom the speed limit tensioner 108B.Because combination 107 of overspeed governor head and safe connecting rod 106 are connected car 103 sides, so thereby the lifting interlock up-and-down movement of this overspeed governor 108 and car 103.
And, because certain unusual car 103 when the Z direction rises at a high speed or descend, is followed this rising or decline overspeed governor 108 high-speed mobile, velocity limiter 108A is according to the rotation of the wheel of this velocity limiter 108A, detect unusually, make overspeed governor hold the 108D of portion action tightly.Thus, the mobile of overspeed governor 108 stopped, car 103 also continues to rise or descend on the other hand.Therefore, produce the relative motion of overspeed governor 108 and car 103, because this relative motion, safe connecting rod 106 is sling via overspeed governor head combination 107, clamp the both sides of pairing each guide rail 102 of a pair of voussoir of each safety member 105, brake thus, thereby car 103 is stopped.
The structure of the safety device of such elevator is documented in the publication communique of Japan, for example, special 2001-122551 communique (below, be called patent documentation 1) in.
But, as mentioned above, on each safety member 105, having 2 voussoirs, 2 voussoirs are connected with safe connecting rod 106 via lifting arm (lift rod) 110.But, safe connecting rod 106 and lifting arm 110 exist shown in Figure 11 (A) and Figure 11 (B) with 2 (both sides) voussoir bonded assembly situations and shown in Figure 12 (A) and Figure 12 (B) with 1 (side) voussoir bonded assembly situation.
Voussoir 119, the 119 bonded assembly situations of Figure 11 (A) and Figure 11 (B) expression safe connecting rod 106 and lifting arm 110 and both sides.
Figure 11 (A) and the combination of overspeed governor head shown in Figure 11 (B) 107 are connected with lever 109, and lever 109 is installed on the side part 103C of underbeam 103A.In addition, shown in Figure 11 (B), the lever 111B that is different from lever 109 is connected with the voussoir 119 of both sides via lifting arm 110.Lever 111B is installed on the side part 103C of underbeam 103A via axle 111F.
On the opposite side part 103D of the underbeam 103A shown in Figure 11 (A), other lever 111C is installed also.Two lever 111B, 111C link together by stock 112.Central portion at bar 112 is equipped with spring 113, adjusts by the power of spring 113, makes bar 112 not move under the effect smaller or equal to the power of certain propulsive effort that speed controller rope produced.
On the underbeam 103A shown in Figure 11 (A), source switch 114 is installed, the action that the cam of installing 115 can test rod 112 on the lever 111C of opposite side.In the safe connecting rod mechanism of the safety device of this structure, 2 voussoirs 119 of both sides are lifted simultaneously via lever 111B, 111C and lifting arm 110, and thus, the voussoir 118 that makes both sides simultaneously and guide rail contact both sides, the complex structure of safe connecting rod mechanism.
The voussoir 119 bonded assembly situations of Figure 12 (A) and 12 (B) expression safe connecting rod 106 and a lifting arm 110 and a side.
Rotatable axle 116 on even keels are installed in the bottom of underbeam 103, and only the end side at axle 116 is provided with lever 117.This lever 117 is connected with overspeed governor head combination 107.Lever 117 is connected with 1 voussoir 118, and lever 117 is as lifting arm performance function, is used for voussoir 118 by to the Z1 direction, thereby can reduces the component count of safe connecting rod mechanism.
Wherein, shown in 12 (B), when safe connecting rod is connected with 1 voussoir 119, safe connecting rod and 119 interlocks of connected 1 voussoir, because the voussoir 120 of opposite side is not connected with safe connecting rod, so with after the one side of guide rail 102 contacts, the voussoir 119,120 of both sides contacts with the two sides of guide rail 102, therefore produces action before safety member 105 actions and postpones at the voussoir 119 of a side.
When light and braking force safety member is big at car, may under voussoir 118 state of contact with a side car be stopped.In order to prevent under voussoir 118 state of contact with a side car to be stopped, suppressing this action and postpone, make the gap (clearance) between voussoir 120 and guide rail 102 one sides little, this moment, voussoir 120 was easy to touch the side of guide rail 102.Therefore, for the safe connecting rod mechanism of such safety device, be difficult to produce stable braking force as the device that car is promptly stopped.
In addition, in patent documentation 1, in the safety device of the elevator of record, need to connect a plurality of levers and stock etc., complex structure.
Summary of the invention
The present invention makes in order to solve above-mentioned problem, the objective of the invention is to provide simple in structure, produces the safety device of the elevator of stable braking force by making the axle rotation.
The power of caused by relative motion between speed controller rope that the safety device of elevator of the present invention will hang down because of the governor from elevator and the car, be passed to 2 voussoirs of first emergency braking device of the both sides that are arranged on above-mentioned car and 2 voussoirs of second emergency braking device, by above-mentioned 2 voussoirs of above-mentioned first emergency braking device and above-mentioned each self-corresponding guide rail of 2 voussoir clampings of above-mentioned second emergency braking device, thereby above-mentioned car is stopped, it is characterized in that, possess: axle, one end side is configured on above-mentioned first emergency braking device, the other end side is configured on above-mentioned second emergency braking device, and can rotate; Voussoir pushing cam is arranged on the above-mentioned axle, and the rotation by above-mentioned axle pushes above-mentioned 2 voussoirs of above-mentioned first emergency braking device and above-mentioned 2 voussoirs of above-mentioned second emergency braking device; Lever connects above-mentioned a side and above-mentioned speed controller rope, will be passed to above-mentioned axle because of the power of the caused by relative motion between above-mentioned speed controller rope and the above-mentioned car, makes above-mentioned axle rotation; The switching manipulation cam is by the rotary manipulation source switch of above-mentioned axle; And spring, connect above-mentioned axle, make above-mentioned axle under effect, not rotate smaller or equal to the power of the above-mentioned power that above-mentioned speed controller rope produced.
The invention effect
According to the present invention, can provide simple in structure, produce the safety device of the elevator of stable braking force by S. A..
Description of drawings
Fig. 1 is the figure of structure example of elevator of first embodiment of the expression safety device that possesses elevator of the present invention.
Fig. 2 is the safety device of elevator of presentation graphs 1 and the figure of underbeam.
Fig. 3 is the action of safety device of elevator of presentation graphs 1 and the lateral plan of underbeam.
Fig. 4 is the figure of second embodiment of the safety device of expression elevator of the present invention.
Fig. 5 is the safety device of elevator of presentation graphs 5 and the figure of underbeam.
Fig. 6 is the figure of the 3rd embodiment of the safety device of expression elevator of the present invention.
Fig. 7 is the figure of the 4th embodiment of the safety device of expression elevator of the present invention.
Fig. 8 is the figure of the 5th embodiment of the safety device of expression elevator of the present invention.
Fig. 9 is the figure of safety device of the elevator of presentation graphs 8.
Figure 10 is the figure of structure of the elevator of the safety device of expression with elevator in the past.
Figure 11 is the figure that represents the safety device of elevator in the past.
Figure 12 is the figure that represents the safety device of other elevators in the past.
Description of reference numerals
1 elevator
2 cars
3 ropes
4 towing machines
5 lift paths
6 guide rails
9 underbeams
10 overspeed governors
19 governors
The safety device of 20 elevators
21 first emergency braking devices
22 second emergency braking devices
30
312 voussoir pushing cams
32 levers
33 switching manipulation cams
34 springs
40 a pair of voussoirs
The specific embodiment
Below, the embodiment that present invention will be described in detail with reference to the accompanying.
(first embodiment)
With reference to Fig. 1~Fig. 3 first embodiment of the present invention is described.
Fig. 1 shows the structure example of elevator of preferred first embodiment of the safety device that possesses elevator of the present invention.Fig. 2 is the safety device of expression elevator shown in Figure 1 and the front view of underbeam.Fig. 3 is the enlarged drawing of structure of observing the safety device of the elevator Fig. 2 from the T direction.
The structure of elevator at first, is described with reference to Fig. 1.The car 2 of elevator 1 shown in Figure 1 is hung the end at rope 3, and according to the action of the motor of towing machine 4 in lift path 5 by along 6 guiding of 2 guide rails, in the lifting of Z direction.Be provided with underbeam 9 in the bottom of car 2.Counterweight 7 is installed on the other end of rope 3.Counterweight 7 is directed along 2 guide rails 8, in the lifting of Z direction.
Embodiment shown in Figure 1 is the example that the safety device 20 of elevator is installed in underbeam 9 sides of car 1.
Governor 19 shown in Figure 1 has overspeed governor 10, velocity limiter 11 and speed limit tensioner 12.Overspeed governor 10 is erected at the velocity limiter 11 on the top that is arranged on lift path 5 and is arranged near the pit of bottom the speed limit tensioner 12.This overspeed governor 10 is connected with car 2 via the safety device 20 of overspeed governor head combination 13, elevator, so the lifting interlock of overspeed governor 10 and car 2 and up-and-down movement.
Fig. 2 shows the structure example of the safety device 20 of above-mentioned elevator, and in Fig. 2, the safety device 20 of elevator is installed on the underbeam 9 of car 2.Underbeam 9 is installed along the L direction in the bottom of car 2, and underbeam 9 shown in Figure 3 has 2 beam 9B, 9C.Devices spaced apart ground disposes beam 9B, 9C abreast.
Safety device 20 for elevator shown in Figure 2, overspeed governor 10 that will hang down from governor shown in Figure 1 19 and the power that relative motion produced between the car 2, be passed to via safe connecting rod mechanism and be arranged on 2 voussoirs 40 of first emergency braking device 21 of both sides of car 2 and 2 voussoirs 40 of second emergency braking device 22,2 voussoirs 40 of 2 voussoirs 40 of first emergency braking device 21 and second emergency braking device 22 are contacted and the both sides of each self-corresponding guide rail 6 of clamping, car 2 is stopped.
As shown in Figures 2 and 3, the safety device 20 of elevator possesses first emergency braking device 21,30,2 voussoir pushing 32,1 switching manipulation cams 33 of 31,1 lever of cam of 22,1 axle of second emergency braking device and 2 springs 34.
As shown in Figure 2, axle 30 downsides at underbeam 9 are striden to the other end 9F side from an end 9D side of underbeam 9, and being configured to be the rotation of L direction along the gauge direction.Axle 30 is supported on the underbeam 9 by a plurality of load-carrying element 9M, can be that the center is rotated with center shaft CL shown in Figure 3.
As shown in Figure 2, first emergency braking device 21 is configured in an end 9D side of underbeam 9, and second emergency braking device 22 is configured in the other end 9F side of underbeam 9.That is, dispose first emergency braking device 21, dispose second emergency braking device 22 in the other end of axle 30 30L side in an end 30R side of axle 30.
Then, with reference to Fig. 3, the structure example of first emergency braking device 21 and second emergency braking device 22 is described.
2 voussoirs 40 that Fig. 3 (A) shows first emergency braking device, 21 sides are positioned in nethermost locational state, Fig. 3 (B) shows 2 voussoirs 40 of first emergency braking device, 21 sides to the pushing of Z1 direction, is positioned on the uppermost position and contact clip is held in the state of the both sides of guide rail 6.
Shown in Fig. 3 (A), first emergency braking device 21 has 40,2 wayss 41 of 2 voussoirs, framework 42, plate 43.Framework 42 is fixed between beam 9B, the 9C of underbeam 9, and 2 wayss 41 are fixed on the framework 42 obliquely.
Middle position guide rail 6 at 2 wayss 41 passes through along the Z direction.The interval of the upper end of 2 wayss 41 is set at the interval less than the bottom of 2 wayss 41.2 voussoirs 40 devices spaced apart on plate 43 is configured in the inboard of 2 wayss 41 mutually opposed to each other., rise in the Z1 direction by the plate 43 that makes 2 voussoirs 40 to shown in Fig. 3 (B) as Fig. 3 (A), 2 voussoirs 40 are by 41 guiding of 2 wayss, and mutual interval dwindles, thereby 2 voussoirs 40 are from sandwich guide rail 6.
Equally, second emergency braking device 22 shown in Figure 2 has the structure identical with first emergency braking device 21, has 40,2 wayss 41 of 2 voussoirs, framework 42, plate 43.
Thus, 2 of first emergency braking device 21 voussoirs 40 guide rail 6 from 2 voussoirs 40 of guide rail 6, the second emergency braking devices 22 of sandwich one side from the sandwich opposite side.
Fig. 2 and shown in Figure 3 about voussoir pushing cam 31 be arranged on an end side and the other end side of axle 30, about voussoir pushing cam 31 have the function of 2 voussoirs 40 of 2 voussoirs 40 pushing first emergency braking device 21 simultaneously and second emergency braking device 22.Specifically, as shown in Figure 3, each voussoir pushing cam 31 is separately fixed on the end 30R and the other end 30L of axle 30.
As shown in Figure 3, an end 32B of lever 32 is fixed on the axle 30, and the other end 32C of lever 32 rotatably is connected in the overspeed governor head combination 13 via pin 13P.Thus, this lever 32 only is configured in a side of axle 30, and lever 32 is connected with the overspeed governor head combination 13 of axle 30, speed controller rope 10.
As shown in Figure 3, voussoir pushing cam 31 has flat support face 31T, shown in Fig. 3 (A), is positioned under the state of nethermost position at 2 voussoirs 40 and plate 43, and flat support face 31T is the level of state along directions X.But, shown in Fig. 3 (B), being positioned under the state of uppermost position at 2 voussoirs 40 and plate 43, the relative directions X of flat support face 31T tilts, and the upper end 31R of flat support face 31T is to the bottom of Z1 direction push plate 43 thus.Directions X, L direction, Z direction are mutually orthogonal.
Switching manipulation cam 33 shown in Figure 2 comes operating switch 45 by the rotation of axle 30.By operating this switch 45, cut off the power supply of the motor of towing machine 4.
For axle 30 is not rotated under the effect of the power of the propulsive effort that is produced smaller or equal to speed controller rope 10, spring 34 shown in Figure 2 is connected with axle 30 via link 39.Thus, axle 30 does not carry out the rotation that needn't have under the effect of the power of the propulsive effort that is produced smaller or equal to speed controller rope 10, thereby does not cause and promptly stop action.
Then, with reference to Fig. 2 and Fig. 3, the action of the safety device 20 of elevator is described.
When turning round usually, the car 2 of elevator 1 shown in Figure 1 is directed lifting on the Z direction by the action of towing machine 4 along 2 guide rails 6 in lift path 5.Under this situation about turning round usually, shown in Fig. 3 (A), overspeed governor head combination 13 descends, above an end 32B of lever 32 compares with the other end 32C and is positioned at.Be positioned under the state of nethermost position at 2 voussoirs 40 and plate 43, the flat support face 31T of voussoir pushing cam 31 is the level of state along directions X.The bottom of whole the stay bearing plate 43 of this flat support face 31T.
But, when car shown in Figure 1 for a certain reason 2 rises or descends with unusual high speed, car 2 is promptly stopped.
Therefore, when car 2 rises or descends with unusual high speed, speed controller rope 10 that will hang down from governor 19 and the caused by relative motion propulsive effort between the car 2 are passed to 2 voussoirs 40 of first emergency braking device 21 shown in Figure 2 and 2 voussoirs 40 of second emergency braking device 22 simultaneously, 2 voussoirs 40 of first emergency braking device 21 and 2 voussoirs 4 of second emergency braking device 22 contact and each self-corresponding guide rail 6 of clamping promptly stop car 2.
Promptly, shown in Fig. 3 (B), propulsive effort by the caused by relative motion between speed controller rope 10 and the car 2, lift overspeed governor head combination 13 to the Z1 direction, therefore lever 32 with center shaft CL be the center in R direction (anticlockwise direction among Fig. 3 (B)) rotation, the other end 32C of lever 32 is lifted to the position that is higher than an end 32B.Therefore, the upper end 31R of the flat support face 31T of voussoir pushing cam 31 is to the bottom of Z1 direction push plate 43, thereby 2 voussoirs 40 and plate 43 are risen simultaneously to the Z1 direction, 2 voussoir 40 clampings also contact the both sides of guide rail 6, make the safety member action, with stable braking force car 2 is stopped thus.
Like this, be rotated by axle 30, a pair of voussoir 40 of an end 30R side of axle 30 shown in Figure 2 rises by 1 plate 43, and a pair of voussoir 40 of the other end 30L side of axle 30 simultaneously shown in Figure 2 rises by 1 plate 43.Only by simultaneously to the plate 43 of the other end 30L side of the plate 43 of an end 30R side of Z1 direction pushing axle 30 and axle 30, just can make 2 a pair of voussoirs 40 contact two faces of clamping guide rail 6 simultaneously, thereby can access the stable failure-free braking force of car 2.
And, can save the bar shown in Figure 11 112 that in the past used, make simple in structure thereby reduce component count.The structure of the safety device 20 of elevator becomes simply, by making axle 30 rotations, can produce stable braking force.
Can constitute following safe connecting rod mechanism, promptly, axle 30 power with governor 19 sides that can constitute rotation are passed to 2 voussoirs 40 of first emergency braking device 21 and 2 voussoirs 40 of second emergency braking device 22, make each voussoir 40 contact guide rail simultaneously, therefore can brake car 2, and component count is few.
(second embodiment)
Second embodiment of the safety device of elevator of the present invention then, is described with reference to Fig. 4 and Fig. 5.In addition, in second embodiment, the identical Reference numeral of inscape mark for identical with the inscape that illustrates in above-mentioned first embodiment because the explanation of identical inscape repeats, therefore omits.
The difference of the safety device 20 of the elevator of the safety device 20B of the elevator of the Fig. 4 and second embodiment shown in Figure 5 and Fig. 2 and first embodiment shown in Figure 3 is, directly is formed with chamfered section 50 on the 32B of the other end of lever 32S.This chamfered section 50 replaces voussoir pushing cam 31 shown in Figure 3, in the bottom of the flat support face upper backup pad 43 of this chamfered section 50.
As Fig. 5 (A) to shown in Fig. 5 (B), lever 32S is that the center rotates in the R direction with center shaft CL, thus to the bottom of Z1 direction push plate 43, therefore 2 voussoirs 40 rise to the Z1 direction with plate 43 simultaneously, the both sides of 2 voussoir 40 clampings contact guide rails 6, thereby obtain stable braking force, car 2 is stopped.
In the safety device 20B of Fig. 4 and elevator shown in Figure 5, chamfered section 50 replaces voussoir pushing cam 31 shown in Figure 3, thereby can save voussoir pushing cam 31, reduces component count.
Like this, on 2 voussoir 40 stuck-at-s plates 43, only, just can make 2 voussoirs 40 contact two faces of clamping guide rail 6 simultaneously, thereby can access the stable failure-free braking force of car by plate 43 is pushed to the Z1 direction.Owing to can make the voussoir that lifts 2 voussoirs 40 push the parts unification of cam and lever, make simple in structure so can reduce component count.The structure of the safety device 20B of elevator becomes simply, by making axle 30 rotations, can produce stable braking force.
Thus, can constitute following safe connecting rod mechanism, promptly, the axle 30 of rotation can be passed to the power of governor 19 sides 2 voussoirs 40 of first emergency braking device 21 and 2 voussoirs 40 of second emergency braking device 22, can make each voussoir can contact guide rail simultaneously, therefore can stably brake, and component count is few.
(the 3rd embodiment)
The 3rd embodiment of the safety device of elevator of the present invention then, is described with reference to Fig. 6.In addition, in the 3rd embodiment, to above-mentioned second embodiment in the identical Reference numeral of mark on the identical inscape of inscape that illustrates because the explanation of identical inscape repeats, therefore omit.
The difference of the safety device 20B of the elevator of the safety device 20C of the elevator of the 3rd embodiment shown in Figure 6 and Fig. 4 and second embodiment shown in Figure 5 is that the centre portion 32N of lever 32S can operating switch 45.That is be the center in the rotation of R direction by lever 32S with center shaft CL and during to the bottom of Z1 direction push plate 43, the centre portion 32N of lever 32S can operating switch 45.Thus, open switch 45, for example can cut off the power supply of the motor of towing machine.
In the safety device 20C of elevator shown in Figure 6, lever 32S can be also used as the cam of operating switch 45, thereby can save switching manipulation cam 33 shown in Figure 4, therefore can the parts that lift the voussoir pushing cam of 2 voussoirs 40 and the cam that makes switch motion are unified, reduce component count.
(the 4th embodiment)
The 4th embodiment of the safety device of elevator of the present invention then, is described with reference to Fig. 7.In addition, in the 4th embodiment, the identical Reference numeral of inscape mark to identical with the inscape that illustrates in above-mentioned first embodiment because the explanation of identical inscape repeats, therefore omits.
The difference of the safety device of the elevator of the safety device 20D of the elevator of second embodiment shown in Figure 7 and Fig. 2 and first embodiment shown in Figure 3 is, disposes 1 spring 34 between the end portion 9F of the centre portion 32N of lever 32S and underbeam 9.By this 1 spring 34 is set, axle 30 does not carry out unnecessary rotation under the effect of the power of the propulsive effort that is produced smaller or equal to speed controller rope 10, thereby does not cause and promptly stop action.Spring 34 shown in Figure 7 replaces 2 springs 34 shown in Figure 2.Thus, can omit link shown in Figure 2 39, further reduce component count.
(the 5th embodiment)
The 5th embodiment of the safety device of elevator of the present invention then, is described with reference to Fig. 8 and Fig. 9.In addition, in the 5th embodiment, the identical Reference numeral of inscape mark to identical with the inscape that illustrates in above-mentioned first embodiment because the explanation of identical inscape repeats, therefore omits.
The difference of the safety device 20 of the elevator of the safety device 20E of the elevator of the Fig. 8 and second embodiment shown in Figure 9 and Fig. 2 and first embodiment shown in Figure 3 is, replace Fig. 2 and cam 31 shown in Figure 3, on an end 30R of axle 30, be formed with the first slot part 60B, on the 30L of the other end of axle 30, be formed with the second slot part 60C.In the first slot part 60B, be placed with the bottom 49 of the first plate 43B, in the second slot part 60C, be placed with the bottom 49 of the second plate 43C.
The first plate 43B is fixed on 2 voussoirs 40 of first emergency braking device 21, and is configured among the first slot part 60B, and the second plate 43C is fixed on 2 voussoirs 40 of second emergency braking device 22, and is configured among the second slot part 60C.
Like this, 2 groups of a pair of voussoirs 40 are separately fixed on the first plate 43B and the second plate 43C, only the first slot part 60B and the second slot part 60C at the both ends by axle 30 push the first plate 43B and the second plate 43C respectively to the Z1 direction, just can make 2 groups of a pair of voussoirs 40 contact the two sides of guide rail 6 respectively simultaneously, thereby can access stable failure-free braking force.Therefore, can make the voussoir that lifts 2 groups of a pair of voussoirs 40 push the parts unification of cam and axle, further reduce component count, make simple in structure.The structure of the safety device 20 of elevator becomes simply, by making axle 30 rotations, can produce stable braking force.
Thus, can constitute following safe connecting rod mechanism, promptly, when car is promptly stopped, the axle 30 of rotation can be passed to the power of governor 19 sides 2 voussoirs 40 of first emergency braking device 21 and 2 voussoirs 40 of second emergency braking device 22 simultaneously, can make each voussoir contact the clamping guide rail simultaneously, safety member is stably braked, and the few safe connecting rod mechanism of component count.
The speed controller rope that the safety device of elevator of the present invention will hang down from the governor of elevator and the power of the caused by relative motion between the car, be passed to 2 voussoirs of first emergency braking device of the both sides that are arranged on car and 2 voussoirs of second emergency braking device, car stopped by 2 voussoirs of first emergency braking device and each self-corresponding guide rail of 2 voussoir clampings of second emergency braking device.The safety device of this elevator possesses: axle, and an end side is configured on first emergency braking device, and the other end side is configured on second emergency braking device, and can rotate; Voussoir pushing cam is arranged on the axle, and the rotation by axle pushes 2 voussoirs of first emergency braking device and 2 voussoirs of second emergency braking device; Lever, a side and the speed controller rope of adapter shaft will be passed to axle because of the power of the caused by relative motion between speed controller rope and the car, make the axle rotation; The switching manipulation cam is by the rotary manipulation source switch of axle; And spring, adapter shaft makes axle not be rotated under the effect smaller or equal to the power of the power that speed controller rope produced.
Thus, can provide simple in structure, produce the safety device of the elevator of stable braking force by making the axle rotation.
In addition, the invention is not restricted to above-mentioned embodiment, the implementation phase can in the scope that does not break away from its purport, make inscape distortion and specialize.
In the embodiment of the invention described above, the safety device of elevator is arranged on the underbeam of car of elevator, but is not limited thereto, and replaces being arranged on the underbeam of car, and the safety device of elevator also can be arranged on the counterweight side.
Further, can form various inventions by the disclosed a plurality of inscape of the above-mentioned embodiment of appropriate combination.For example, can from the whole inscapes shown in the embodiment, delete several inscapes.And, can the related inscape of the different embodiments of appropriate combination.

Claims (5)

1. the safety device of an elevator, the speed controller rope that will hang down and the power of the caused by relative motion between the car because of governor from elevator, be passed to 2 voussoirs of first emergency braking device of the both sides that are arranged on above-mentioned car and 2 voussoirs of second emergency braking device, by above-mentioned 2 voussoirs of above-mentioned first emergency braking device and above-mentioned each self-corresponding guide rail of 2 voussoir clampings of above-mentioned second emergency braking device, above-mentioned car is stopped, it is characterized in that the safety device of this elevator possesses:
Axle, an end side is configured on above-mentioned first emergency braking device, and the other end side is configured on above-mentioned second emergency braking device, and can rotate;
Voussoir pushing cam is arranged on the above-mentioned axle, and the rotation by above-mentioned axle pushes above-mentioned 2 voussoirs of above-mentioned first emergency braking device and above-mentioned 2 voussoirs of above-mentioned second emergency braking device;
Lever connects above-mentioned a side and above-mentioned speed controller rope, will be passed to above-mentioned axle because of the power of the caused by relative motion between above-mentioned speed controller rope and the above-mentioned car, makes above-mentioned axle rotation;
The switching manipulation cam is by the rotary manipulation source switch of above-mentioned axle; And
Spring connects above-mentioned axle, makes above-mentioned axle not be rotated under the effect smaller or equal to the power of the above-mentioned power that above-mentioned speed controller rope produced.
2. the safety device of elevator according to claim 1 is characterized in that,
End at above-mentioned lever is provided with chamfered section, this chamfered section is when making above-mentioned axle rotate by the power because of the caused by relative motion between above-mentioned speed controller rope and the above-mentioned car, push above-mentioned 2 voussoirs of above-mentioned first emergency braking device and above-mentioned 2 voussoirs of above-mentioned second emergency braking device, above-mentioned chamfered section is as above-mentioned voussoir pushing cam.
3. the safety device of elevator according to claim 1 and 2 is characterized in that,
Above-mentioned lever constitutes the above-mentioned switching manipulation cam of operating above-mentioned source switch when above-mentioned axle rotates.
4. according to the safety device of each described elevator in the claim 1~3, it is characterized in that,
Above-mentioned spring is connected between the underbeam of above-mentioned lever and above-mentioned car.
5. the safety device of elevator according to claim 1 is characterized in that,
On an end of above-mentioned axle, be formed with first slot part, on the other end of above-mentioned axle, be formed with second slot part, and have:
First plate is fixed on above-mentioned 2 voussoirs of above-mentioned first emergency braking device, and is configured in above-mentioned first slot part; And
Second plate is fixed on above-mentioned 2 voussoirs of above-mentioned second emergency braking device, and is configured in above-mentioned second slot part.
CN2009101406401A 2008-06-11 2009-06-10 Safety device of elevator Expired - Fee Related CN101602461B (en)

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