CN101804935B - Elevator hand barring device - Google Patents
Elevator hand barring device Download PDFInfo
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- CN101804935B CN101804935B CN2009100568733A CN200910056873A CN101804935B CN 101804935 B CN101804935 B CN 101804935B CN 2009100568733 A CN2009100568733 A CN 2009100568733A CN 200910056873 A CN200910056873 A CN 200910056873A CN 101804935 B CN101804935 B CN 101804935B
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- slide block
- screw
- connecting rod
- barring device
- elevator
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Abstract
The invention discloses an elevator hand barring device. The elevator hand barring device comprises a slide block, a connecting rod, a guide rail assembly and a rotational member, wherein the guide rail assembly consists of a screw and a mounting base and is fixedly arranged nearby a tractor, the slide block is connected with the screw of the guide rail assebly by a screw thread pair and the screw rotates to drive the slide block to move along an axial direction of the screw; one end of the connecting rod is rotatably connected with a rotating part of the tractor and the other end of the connecting rod is rotatably connected with the slide block; and the rotational member is arranged at an end part of the screw and the screw is driven to rotate through rotating the rotational member. The hand barring device has simple structure, low cost, convenient operation, safety and reliability and high rescue efficiency.
Description
Technical field
The present invention relates to a kind of elevator annex, particularly relate to a kind of hand turning gear that is used for the elevator gearless machine.
Background technology
Traditional elevator traction machine adopts the gear towing machine mostly, and the centre is provided with speed reduction gearing; When elevator is installed or keep in repair, elevator is gone up and down under the effect of manpower with the handwheel that is installed on the electrical motor speed end.
Along with the continuous development of elevator technology, permanent-magnet synchnorous gearless dragging machine becomes the main flow direction of elevator technology development, and will replace geared machine fully.Owing to there is not deceleration force amplifier mechanism, therefore handwheel directly is installed on the turning cylinder of towing machine can not be moved car, can't realize emergency relief work.
Although some elevator manufacturer has adopted the method for emergency source of electrical power that car is vertically moved under the elevator faults state, such emergency source of electrical power capacity is big, and cost is high; If emergency source of electrical power also et out of order will bring difficulty for getting rid of elevator faults.
In order to realize the emergency relief work of gearless machine, Chinese utility model patent specification sheets CN2441784Y (Granted publication day: August 8 calendar year 2001) disclose a kind of hand turning gear of gearless machine.One end of towing machine is connected with brake wheel, and the wheel rim of this brake wheel is provided with the flank of tooth, it be installed on the pinion on the support, this miniature gears is connected with rocking arm or disk handwheel through adapter shaft; Pinion shaft is axially fixed with pin after inserting the bearing hole on the support; When hand rocking arm,, thereby make the upper and lower operation of the car that is connected in towing machine through the brake wheel that miniature gears drives and towing machine is connected as a single entity of adapter shaft.This scheme has some significantly not enough: 1) operating effort of standard GB 7588-2003 regulation turning gear must not be greater than 400N; Because the big gear wheel flank of tooth of this turning gear is arranged on the brake wheel, the diameter of big gear wheel receives the restriction of brake wheel size, so the reduction ratio of big miniature gears is restricted, so this scheme can only be applicable to the situation that jiggering moment is less.2) because the big gear wheel flank of tooth is set on brake wheel; The axial dimension of brake wheel and the axial dimension of towing machine have been increased on the one hand; Increase the cost of brake wheel cost and towing machine; The processing flank of tooth is also cumbersome and time-consuming on brake wheel on the other hand, and therefore the cost of whole turning gear is than higher.3) because big pinion drive can not self-locking,, possibly jeopardize maintainer's safety simultaneously so there is the danger of handwheel driving.
Chinese invention patent specification sheets CN1216788C (Granted publication day: on May 8th, 2004) disclose a kind of hand turning gear of gearless machine.This turning gear be one the cover speed reduction gearing, speed reduction gearing is installed in the towing machine axle head, and with towing machine axle head extension gear mesh.The weak point of this scheme is: 1) speed reduction gearing has adopted a cover planetary gear apparatus, thereby cost is than higher.2) load carrying ability along with elevator increases, and the transmitting ratio of speed reduction gearing also will increase, and the cost of speed reduction gearing is increased.3) because machine shaft has an extension, with the machining period that increases machine shaft and the axial length of machine shaft; And because machine shaft must be transmitted bigger turning gear moment, so the radial dimension of machine shaft will increase with the moment of turning gear and become greatly, the size of whole like this towing machine also will become greatly, can increase the cost of towing machine.4) because big pinion drive can not self-locking, there is the danger of handwheel driving, possibly jeopardizes maintainer's safety.
Chinese invention patent ublic specification of application CN1657389A (open day: on August 24th, 2005) disclose a kind of elevator hand barring device.This turning gear comprises pedestal, rhombus arm (by four arms, being joined together to form rhombus through turning cylinder), leading screw and joystick.Fulcrum of rhombus arm and pedestal are rotationally connected, and fulcrum and traction sheave are rotationally connected, and leading screw is connected with two fulcrums.Joystick is arranged on the end of leading screw.Through rotating the joystick rotational lead screw, thereby make and move up and down, drive traction sheave and rotate with traction sheave bonded assembly fulcrum.The weak point of this scheme is: 1) complex structure, cost height.The rhombus arm is made up of four arms, and connects through turning cylinder, and the requirements of making of turning cylinder is high simultaneously; Leading screw and rhombus arm bonded assembly fulcrum structure are complicated in addition, and the rotation of existing fulcrum also has the rotation of leading screw.2) because four arms form the rhombus arm through turning cylinder, cause the internal friction of device very big, the operating effort that needs increases.3) in order to make joystick that enough operational spaces arranged, let joystick be positioned at the outside of towing machine, the length of leading screw must the design-calculated long enough, and along with the radial dimension of towing machine increases, the length of leading screw certainly will increase, and the cost of leading screw is very high like this.4) the operating lever operation position of this device is unfixing, makes troubles to emergency relief work.In the time of the bottom of the inclined to one side towing machine in the position of joystick, the unusual difficulty of joystick this moment, and the operational space of joystick is very big, and operation can't be accomplished; Because the position of control lever is unfixing, bring the danger of operation to the rescue group in addition.5) must the fulcrum that connect traction sheave be removed during the position of adjustment rhombus arm, rotate rhombus arm and leading screw, and might need adjust the spacing of two fulcrums on the leading screw to suitable position; Because rhombus arm and leading screw are heavier, operation is difficulty relatively; Rotational lead screw adjustment this moment is also very difficult in addition, so the adjustment of the position of rhombus arm will influence the efficient of rescue greatly.
Summary of the invention
The technical matters that the present invention will solve provides a kind of elevator hand barring device, and this turning gear is simple in structure, and cost is low, and is easy to operate, safe and reliable, and rescue efficiency is high.
For solving the problems of the technologies described above, elevator hand barring device of the present invention comprises slide block, connecting rod, guide assembly and tumbler; Said guide assembly is made up of a screw rod and mount pad, be fixedly installed on towing machine near; Said slide block is connected with the screw rod of guide assembly through screw thread pair, and said screw rod rotates the said slide block of drive and moves along screw axial; The rotating part of said connecting rod one end and towing machine is rotationally connected, and the other end and said slide block are rotationally connected; Said tumbler is arranged on the end of said screw rod, drives said screw rod rotation through rotating this tumbler.
The invention has the beneficial effects as follows:
1) turning gear of the present invention constitutes simple slider-crank mechanism by slide block, connecting rod and guide assembly and towing machine turning unit; Wherein the point of connection of connecting rod and towing machine rotating part can be regarded crank as to the center of turn of rotating part, and promptly the rotating part of towing machine is a crank; Slide block, connecting rod and guide assembly simple in structure, cost is low, requirement on machining accuracy is not high, makes easily, helps reducing the processing and manufacturing cost.
2) angle between connecting rod and the crank is limited to certain scope, can be so that the input force of turning gear reduces, because stressed its cost that reduces of connecting rod can reduce; The length of the length of guide assembly and screw rod can reduce in addition, can reduce material and manufacturing cost;
3) connecting rod can have two positions of symmetry to be connected with the rotation section of traction sheave, and these two positions can be changed very convenient and quickly, thereby improve operating efficiency, and whole emergency relief work can be carried out basically continuously.
4) owing to adopt the screw thread pair transmission, on the one hand can self-locking, the input force of turning gear also can reduce greatly on the other hand, and emergency relief work is implemented easily like this, and the while is also safe especially.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further explain:
Fig. 1 is the front view of one embodiment of the invention;
Fig. 2 is a left view embodiment illustrated in fig. 1.
The specific embodiment
Like Fig. 1, shown in 2, hand turning gear of the present invention is made up of slide block 07, connecting rod 03, screw rod 04, mount pad 05 and tumbler 06, and wherein screw rod 04 is formed guide assembly with mount pad 05.Towing machine 01 comprises traction sheave 02, and 15 screws 12 are set on the circumference of traction sheave 02.Guide assembly is fixed on the machine bed 09 through bolt 11.Connecting rod 03 is rotationally connected with traction sheave 02 and slide block 07 respectively through 2 bolts 10.Slide block 07 is installed on the screw rod 04.Tumbler 06 (being handwheel in the embodiment shown in fig. 1) is connected with an end of screw rod 04 through centre hole, is arranged on a side of towing machine 01.One detector switch 08 is set on machine bed 09.
Connecting rod 03 is an angle steel section bar; Screw rod 04 is supported on the mount pad 05 through two supported holes at mount pad 05 two ends; Slide block 07 is a square structure, have on the slide block 07 with connecting rod 03 bonded assembly hole and with screw rod 04 bonded assembly screw, the structure of these parts is very simple; The accuracy requirement of processing simultaneously is lower, makes easily.This hand turning gear is actually a piston crank mechanism, and traction sheave 02 is a crank, and the length of crank is the distance that the connecting rod 03 and the connecting bore 12 of traction sheave 02 arrive the traction sheave center.In order further to reduce the cost of hand turning gear; Angle between connecting rod 03 and the crank (connecting bore 12 of connecting rod 03 and traction sheave 02 is to the line at traction sheave center) is limited to certain scope; The input force of turning gear is reduced; The stressed of connecting rod 03 reduces, and can reduce connecting rod 03 cost; The length of guide assembly and the length of screw rod 04 also can reduce simultaneously.
As shown in Figure 1, the tumbler 06 of hand turning gear is positioned at a side of towing machine, and the rotation space of tumbler does not receive the restriction of towing machine like this.When tumbler 06 is handwheel, can select big diameter, the input force of turning gear is reduced, salvage work implements more easily.Certainly tumbler 06 also can be a rocking bar.
As shown in Figure 1, when the mount pad 05 of guide assembly is installed in 09 last time of machine bed, the detector switch 08 that is installed on the machine bed 09 is detected, elevator gets into the state of emergency relief.
As shown in Figure 1, have a contact surface between slide block 07 and the mount pad 05 at least.When slide block 07 was driven by screw rod 04, slide block 07 receives the external force effect may be along the rotational of screw rod 04; Can overcome the rotation of slide block 07 through said contact surface, and can not produce very big internal resistance, slide block 07 is moving axially along screw rod 04 more easily.
The rescue process of hand turning gear of the present invention is; The mount pad 05 of guide assembly is installed on the machine bed 09 through bolt 11; Then connecting rod 03 is installed in initial position as shown in Figure 1; Be rotationally connected through two bolts 10 and traction sheave 02 and slide block 07, handwheel 06 be installed in an end of screw rod 04.This moment towing machine releasing of brake because can self-locking between screw rod 04 and the slide block 07, so the phenomenon of handwheel 06 driving can not occur, salvage work be as safe as a house.Rotate handwheel 06 subsequently, slide block 07 will move right, and move to position A as shown in Figure 1 always, and traction sheave 02 will clockwise rotate simultaneously.When connecting rod 03 moved to position A, this moment, the bolt 10 that will be fixed on the traction sheave 02 with hand screwed off, and the position of connecting rod 03 is moved to position B as shown in Figure 1, utilized bolt 10 that connecting rod 03 is connected with traction sheave 02 rotates.Connecting rod 03 by position A to the position B, possibly need the position of adjustment connecting rod 03, but the position of adjustment is smaller, so the adjustment of position A B to the position can be accomplished in a short period of time.Then, backward rotation handwheel 06, connecting rod 03 moves to position C, and slide block 07 moves to initial position simultaneously, and traction sheave 02 continues to clockwise rotate.This moment, the bolt 10 that will be fixed on the traction sheave 02 with hand screwed off, and the position of connecting rod 03 is moved to initial position as shown in Figure 1.The change in location of connecting rod 03 also can be accomplished in a short period of time here.Repeat above-mentioned salvage work, traction sheave 02 continues to clockwise rotate.Comprehensive above-mentioned rescue process about hand turning gear; Can know that the rotation of traction sheave 02 can accomplish basically continuously; Although the middle time that has connecting rod 03 position to adjust; But because connecting rod 03 initial position and position C are symmetric positions, the position A of connecting rod 03 and position B also are symmetric positions, and the change in location of connecting rod 03 can be accomplished very quickly like this.
More than, the present invention has been carried out detailed explanation, but these are not to be construed as limiting the invention through embodiment.Under the situation that does not break away from the principle of the invention, those skilled in the art also can make many distortion and improvement, and these also should be regarded as protection scope of the present invention.
Claims (8)
1. an elevator hand barring device is characterized in that: comprise slide block, connecting rod, guide assembly and tumbler; Said guide assembly is made up of a screw rod and mount pad, be fixedly installed on towing machine near; Said slide block is connected with the screw rod of guide assembly through screw thread pair, and said screw rod rotates the said slide block of drive and moves along screw axial; The rotating part of said connecting rod one end and towing machine is rotationally connected, and the other end and said slide block are rotationally connected; Said tumbler is arranged on the end of said screw rod, drives said screw rod rotation through rotating this tumbler.
2. elevator hand barring device as claimed in claim 1 is characterized in that: said rotating part is the traction sheave of towing machine.
3. elevator hand barring device as claimed in claim 1 is characterized in that: said tumbler is a handwheel.
4. elevator hand barring device as claimed in claim 1 is characterized in that: said tumbler is a rocking bar.
5. elevator hand barring device as claimed in claim 1 is characterized in that: said tumbler is positioned at a side of towing machine.
6. elevator hand barring device as claimed in claim 1 is characterized in that: the mount pad of said guide assembly is fixedly installed on the machine bed.
7. elevator hand barring device as claimed in claim 6 is characterized in that: be used to detect said guide assembly and whether be arranged on the detector switch on the machine bed being provided with one on the machine bed.
8. like the arbitrary described elevator hand barring device of claim 1 to 7, it is characterized in that: have a contact surface between the mount pad of said guide assembly and the said slide block at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100568733A CN101804935B (en) | 2009-02-12 | 2009-02-12 | Elevator hand barring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100568733A CN101804935B (en) | 2009-02-12 | 2009-02-12 | Elevator hand barring device |
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| Publication Number | Publication Date |
|---|---|
| CN101804935A CN101804935A (en) | 2010-08-18 |
| CN101804935B true CN101804935B (en) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100568733A Active CN101804935B (en) | 2009-02-12 | 2009-02-12 | Elevator hand barring device |
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| CN (1) | CN101804935B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107709217A (en) * | 2015-07-01 | 2018-02-16 | 三菱电机株式会社 | The manual actuation method of elevator traction machine and the manual driving device of elevator traction machine |
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| CN101804935A (en) | 2010-08-18 |
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