CN107032251B - Rack-and-pinion lifting device horizontal safety catch - Google Patents
Rack-and-pinion lifting device horizontal safety catch Download PDFInfo
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- CN107032251B CN107032251B CN201611221347.4A CN201611221347A CN107032251B CN 107032251 B CN107032251 B CN 107032251B CN 201611221347 A CN201611221347 A CN 201611221347A CN 107032251 B CN107032251 B CN 107032251B
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- Prior art keywords
- lifting device
- rack
- movable rack
- electric
- drive
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
Abstract
A kind of rack-and-pinion lifting device horizontal safety catch, it is configured by horizontal direction, its composition includes load-supporting part, rail assembly, movable rack, the position-limit mechanism of movable rack, the operating mechanism of movable rack, the control device of the operating mechanism of movable rack, hand-operating unlocking mechanism；The operating mechanism manipulation activities rack gear for directly contacting the movable rack for perhaps contacting the configuration of load-bearing horizontal direction by middle transition load-supporting part at the top of movable rack with the main load-carrying members of lifting device carriage after entering on-position is moved horizontally or is stopped on orbit hole on the position for being maintained at certain determinations；The position of the determination, the free position that is completely disengaged and having one section of gap including the application position engaged with lifting device drive rack or with lifting device drive rack；It plays and saves the beneficial effect that the useful space significantly improves langding accuracy and safeguard protection braking quality.
Description
Technical field
The present invention relates to lifting device safety catch fields, horizontal more particularly to a kind of rack-and-pinion lifting device
Formula safety catch.
Background technique
The safety arrestment measure of existing pinion and-rack lifting device, or by friction catch to motor shaft,
Either realized by the method for the friction catch to gear shaft, friction catch, exist probably due to friction material abrasion or
Performance caused by person's oil pollution etc. lowers or failure；In addition if problem, such as gear teeth damage occur for driving gear, even if
Gear does not rotate, and cannot guarantee that reliable braking；To ensure safety, pinion and-rack lifting device, which must configure, reliably can
Reply includes the safety catch that problem and similar safety problem occur for driving gear.
Summary of the invention
The purpose of the present invention is to provide a kind of reliably cope with and problem and similar safety occurs including driving gear
The safety catch of problem.
A kind of rack-and-pinion lifting device horizontal safety catch (hereinafter referred to as horizontal safety catch),
It is configured by horizontal direction, installation site is in lifting device car top or bottom or other reasonable positions, composition packet
It includes, load-supporting part, rail assembly, movable rack, the position-limit mechanism of movable rack, the operating mechanism of movable rack, movable rack
Operating mechanism control device, hand-operating unlocking mechanism；The load-supporting part includes direct load-supporting part or middle transition
Load-supporting part；The rail assembly (referring to fig. 2) includes the water of upper rail 15 (in Fig. 2 and load-supporting part), the formation of lower rail 18
Plate rail road, guide plate 27, and for track window aperture 11 that movable rack passes through；Movable rack (right movable rack 16 and left activity
Rack gear 12) track window aperture 11 is passed through, the tooth form for the part of movable rack being associated with drive rack is in can be with lifting
The drive rack 17 of equipment engages perhaps isolated position by the way that certain determinations are moved horizontally or be maintained on rail assembly
Position on realize and the engagement of drive rack or separate, the position of the determination, including with lifting device drive rack
The application position of engagement or the free position that a bit of gap is kept completely separate and had with lifting device drive rack, it is described
Have a bit of gap, refer to that both drive rack and movable racks corresponding thereto tooth top interplanar has the gap of 2~5mm；
At least one direction of the inner face either above or below for the part of movable rack being associated with guide rail is provided with guide groove, (ginseng
See Fig. 4), the mating part of guide groove and guide plate 27 is dynamic cooperation, to prevent movable rack to the outside of carriage 60 or interior
Side play；Load-supporting part at the top of movable rack after entering on-position with lifting device carriage (is that load-supporting part is simultaneous in Fig. 1
Upper rail 15) it directly contacts or load-bearing is contacted by middle transition load-supporting part；The operating mechanism manipulation activities tooth of movable rack
Item is moved horizontally or is stopped on orbit hole on the position for being maintained at certain determinations, the operating mechanism cloth of the movable rack
It sets in the support structure 28 in the horizontal plane direction of lifting device carriage；The control device of the operating mechanism of the movable rack
Including, mechanical device or electric device or hydraulic device or pneumatic device or electric-liquid combined unit or
Electric-gas combined unit；The electric-liquid combined unit or electric-gas combined unit includes solenoid valve 30, the solenoid valve
30 coils obtain electric, power loss by the control of lifting device electric control system.
Fig. 1 be a kind of rack-and-pinion lifting device horizontal safety catch structural schematic diagram, diagram direction be from
60 top of rack-and-pinion lifting device carriage sheds top car outside plate finding viewed from above, so driving for lifting device
Carry-over bar 17 can only see its top, and right movable rack 16 has carried out broken section processing, can see its internal and right thick stick clearly
The fit structure of bar 19, the combination of right movable rack and the combination of left movable rack be with rack gear among center chain-dotted line indicates vertical
Directly in the mirror symmetric figure that the vertical median plane of rack gear projection plane is symmetrical plane, bracket 7 is half section, movable rack
The control device of operating mechanism includes or hydraulic device or pneumatic device or electric-liquid combined unit or electric-gas
The state that movable rack is separated with lifting device drive rack, the horizontal safety arrestment is shown in combined unit, Fig. 1
Device is in free position state, and such state looks down from top is easy to distinguish movable rack and lifting device sliding tooth
Item；Fig. 2 is the A-A partial sectional view of Fig. 1, and direction is from A-A section eyes front (in terms of rack gear direction) finding, and drawing is shown
The connection relationship of the right lever 19 of the operating mechanism of rail assembly, movable rack and movable rack, it is shown that movable rack with
The state of lifting device drive rack separation；Fig. 3 is that the movable rack that view direction same as shown in Figure 2 is shown is set with lifting
Standby drive rack is in the schematic diagram of engagement on-position；Fig. 4 is the B-B partial sectional view of Fig. 1, and direction is past from B-B section
Seen in the right side is seen and (seen toward centerline direction), drawing shows rail assembly, movable rack and movable rack from vertical section direction
The connection relationship of the lever left 9 of operating mechanism；A kind of rack-and-pinion lifting device top-type safety catch, including
Rail assembly, movable rack, the operating mechanism of movable rack, the control device of operating mechanism, load-supporting part, the track groups
Part includes the horizontal rail that track window aperture 11, guide plate 27, load-supporting part and upper rail 15 and lower rail 18 are formed, the activity
Rack gear includes right movable rack 16 and left movable rack 12, and the right movable rack 16 and left movable rack 12 pass through track window
Oral pore 11, the tooth form for the part of movable rack being associated with the drive rack 17 of lifting device is in can be with lifting device
The engagement of drive rack 17 perhaps isolated position by the way that the positions of certain determinations is moved horizontally or is maintained on rail assembly
Upper realization with the engagement of drive rack 17 or separate, the position of the determination, including engaged with lifting device drive rack
Application position or the free position in a bit of gap is kept completely separate and had with lifting device drive rack, described has
A bit of gap refers to that drive rack and movable rack tooth top interplanar corresponding thereto have the gap 2~5mm；Movable rack with
The fit dimension of horizontal rail is dynamic cooperation, and contact surface is smooth low coefficient of friction surfaces, to be conducive to the shifting of movable rack
It is dynamic；Fig. 4 is the B-B partial sectional view of Fig. 1, and the inner face either above or below for the part of movable rack being associated with guide rail is extremely
A rare direction is provided with guide groove, (referring to Fig. 3), and the mating part of guide groove and guide plate 27 is dynamic cooperation, to prevent from living
Outside or inside play of the carry-over bar to carriage 60；Right movable rack 16 and 12 top of left movable rack are entering on-position
Load-bearing is directly contacted with load-supporting part and upper rail 15 afterwards；The operating mechanism of the movable rack includes lever left 9, right lever
19, left fixed shaft 10, right fixed shaft 20, movable axis 21, pulling block 8, bracket 7, spring 6, adjusting nut group 5, pull rod 4, jacking block 3,
Piston 2, cylinder body 1；The piston 2, cylinder body 1 include fluid pressure type or vapour-pressure type；The operating mechanism of the movable rack is
Horizontal plane direction arrangement, actual motion direction are that direction defines, 17 side of drive rack herein along the horizontal plane to describe clearly
Xiang Weiqian, it is mobile to move forward to 17 direction of drive rack after 1 direction of cylinder body is, it is mobile to move back to 1 direction of cylinder body, (if figure
1, Figure 11 is placed vertically, then Forward is exactly uplink relative to drawing, and moving back is exactly downlink relative to drawing)；Movable rack
The operating mechanism course of work be, when the after interface 23 of cylinder body 1 is exhaust outlet (or oil return opening), front port 22 is air inlet
When (or oil inlet), piston 2 is moved back, jacking block 3 is followed piston 2 to move back and drive pull rod 4, drawn by the elastic force effect of spring 6
Block 8 moves back together, and the movable axis 21 being fixed on pulling block 8 follows pulling block 8 to move back, drives lever left 9,19 postbrachium of right lever around a left side
Fixing axle 10, right fixed shaft 20 are rotated toward outside, the left movable rack 12 of forearm drive, the right movable teeth of lever left 9, right lever 19
Item 16 is mobile toward 17 center position of lifting device drive rack, until the retarder location at a fully engaged with lifting device drive rack 17
It sets, the stopping of jacking block 3 moves back, but piston 2 continues to move back a small distance, keeps being in not contact condition with jacking block 3, to guarantee
Left movable rack 12, right movable rack 16 and 17 positive engagement of lifting device drive rack；When the after interface 23 of cylinder body 1 is air inlet
When mouthful (either oil inlet), front port 22 are exhaust outlet (or oil return opening), the Forward of piston 2, jacking block 3 by piston 2 press
It moves forward and pull rod 4, pulling block 8 is driven to move forward together compressed spring 6 simultaneously, the movable axis 21 being fixed on pulling block 8 follows pulling block 8
Forward drives lever left 9,19 postbrachium of right lever to rotate around left fixed shaft 10, right fixed shaft 20 toward inside, lever left 9, right lever
19 forearm drives left movable rack 12, right movable rack 16 mobile toward the direction for leaving 17 center of lifting device drive rack,
Until the free position in a bit of gap is kept completely separate and had with lifting device drive rack 17；Adjusting nut group 5 is for adjusting
The pressure of spring 6, the front position of the front end face of 7 fixed spring 6 of bracket, the main load-bearing of fixed frame 28 and lifting device carriage
Structure connection, and horizontal safety catch is risen and supports fixed function；The rack-and-pinion lifting device horizontal peace
Full application of brake device, installation site include the top or bottom or other reasonable positions of carriage；Figure 11 is shown in Fig. 1
Rack-and-pinion lifting device horizontal safety catch be in the schematic diagram of application position state.
The electric-liquid combined unit or electric-gas that the control device of the operating mechanism of the movable rack includes combine dress
It sets, including, the rear interface 23 or front port 22 of the cylinder body 1 are chosen to be air inlet (or oil inlet) or to be vented
The state of mouth (or oil return opening), is controlled by solenoid valve 30, and the solenoid valve 30 is two-position-five-way solenoid valve, and Fig. 6 is
State of a control schematic diagram when 30 power loss of solenoid valve, spool is reset to initial position, solenoid valve P by action of reset spring when power loss
Mouthful with B mouthfuls lead to, P mouthfuls connect the air inlet pipeline (or oil inlet pipe) of compressed air gas source (either pressure oil oil sources), B mouthfuls connect cylinder body
1 front port 22, R mouthfuls with A mouthfuls logical, the R mouthfuls of air pipes that run in (or oil return line), the A mouthfuls of rear interfaces 23 for connecing cylinder body 1, at this time,
The front port 22 of selected cylinder body 1 is that the rear interface 23 of air inlet (perhaps oil inlet) cylinder body 1 is exhaust outlet (or oil return opening),
Piston 2 moves back, and left movable rack 12, right movable rack 16 and 17 positive engagement of lifting device drive rack are implemented to brake；Fig. 5 is
State of a control schematic diagram when solenoid valve 30 must be electric, spool is moved by electromagnet effect when obtaining electric reaches operating position, and P mouthfuls of solenoid valve
With A mouthfuls it is logical, P mouthfuls connect the air inlet pipeline (or pressure oil oil sources oil inlet pipe) of compressed air gas source, A mouthfuls connect being followed by for cylinder body 1
Mouthfuls 23, S mouthful lead to B mouthfuls, the S mouthfuls of air pipes that run in (or oil return line), the B mouthfuls of front ports 22 for connecing cylinder body 1, at this time, select cylinder
The rear interface 23 of body 1 is that the front port 22 of air inlet (perhaps oil inlet) cylinder body 1 is exhaust outlet (or oil return opening), before piston 2
It moves, until left movable rack 12, right movable rack 16 and lifting device drive rack 17 are kept completely separate and have a bit of gap
Free position, a bit of gap, refers to the gap 2~5mm.
30 coil of solenoid valve obtains electric, power loss by the control of lifting device electric control system, and described is electrical
It further include the contactor only controlled by general supply or relay adjunction in the control unit of the solenoid valve 30 of control system
Tentaculum combination and energy storage device, the contactor only controlled by general supply or relay adjunction tentaculum combine normally closed
Contact is connected across between 30 coil of solenoid valve and energy storage device, and when lifting device obtains electric, normally-closed contact is disconnected, 30 coil of solenoid valve
Connection between energy storage device also disconnects, energy storage device energy storage；When lifting device power loss, other electricity-loss braking devices include electricity
The included power loss band brake apparatus of motivation plays a role braking immediately, but 30 coil of solenoid valve not power loss immediately,
Relay or contactor normally-closed contact the power loss closure controlled by general supply, connect 30 coil of solenoid valve with energy storage device,
Energy storage device is that other electricity-loss braking devices are independent to delay time (discharge time) the constant design tuning of 30 coil of solenoid valve
Complete the braking time and the difference of electric-liquid combined unit or electric-gas combined unit movement delay time that braking needs；Example
Such as, it is 3.5S, electric-liquid joint dress that other electricity-loss braking devices of certain lifting device, which individually complete the braking time that braking needs,
It sets or electric-gas combined unit movement delay time is 0.5S, then delay time constant of the energy storage device to 30 coil of solenoid valve
Design tuning is (3.5S-0.5S=) 3S, after the completion of energy storage device delay, 30 coil losing electricity of solenoid valve；When lifting device is always electric
(state after discharging including energy storage device energy after original state or power loss), lifting device are in static when source is disconnected without electricity
State, 30 coil of solenoid valve is in original state by action of reset spring without electricity, solenoid valve 30, piston 2 moves back, until left activity
The application position of rack gear 12, right movable rack 16 and 17 positive engagement of lifting device drive rack, lifting device safety device pair
Lifting device implements braking；When lifting device general supply is connected, the electric control system of lifting device needs to control according to operation
30 coil of solenoid valve obtains electric or power loss, and when lifting device prepares to start, the electric control system of lifting device controls electricity
The coil of magnet valve 30 obtains electric, iron core movement band movable valve plug to operating position, the Forward of piston 2, until left movable rack 12, right activity
Rack gear 16 and lifting device drive rack 17 are kept completely separate and have the free position in a bit of gap, carry out for lifting device starting
Prepare；When needing to stop after lifting device starting, the electric control system of lifting device first disconnects lifting device motor power,
Motor deceleration, when close to stop position, such as when close to level position, the electric control system of lifting device is controlled on schedule
30 coil losing electricity of solenoid valve processed is reset to initial position, and control piston 2 moves back, until left movable rack 12, right movable rack 16
With the application position of 17 positive engagement of lifting device drive rack；If there is abnormal conditions, such as the unexpected power down of lifting device,
Or guarded by location device is reached the limit of because of lifting device overspeed protective device action power dump or because of lifting device
Action power dump etc., for lifting device general supply immediately without electricity, other electricity-loss braking devices include that motor is included at this time
Power loss band brake apparatus plays a role braking immediately, and 30 coil losing electricity of solenoid valve after the completion of energy storage device delay, solenoid valve 30 resets
For original state, piston 2 moves back, left movable rack 12, right movable rack 16 are reliably nibbled with lifting device drive rack 17 for control
It closes, ensure that the safety of lifting device；In the case of emergency braking, left movable rack 12, right movable rack 16 at the beginning may be with
Lifting device drive rack 17 does not have at a fully engaged, and rack gear may occur when worst situation is braking as shown in Figure 7
The case where highest point and highest point contact, friction catch is temporarily become under the effect of elasticity at this time, if lifting device is complete at this time
The braking moment of portion's brake apparatus, which adds up, is enough to realize braking, and braking task is completed；If lifting device is all braked at this time
The braking moment of device, which adds up, is all not enough to prevent lifting device downslide, (because there is braking moment effect, under just starting
Sliding meeting is slower), when slipping down to the position of be staggered highest point and highest point, left movable rack 12, right movable rack 16 are just
Then as continuing to glide, it can continue to squeeze in the tooth socket for squeezing into lifting device drive rack 17 under elastic force promotion (referring to Fig. 8)
Enter, until left movable rack 12, right movable rack 16 and 17 positive engagement of lifting device drive rack；The manual unlocking machine
Structure, including, a hand-operated direction valve is provided between solenoid valve 30 and gas source, when being used for required after power failure (such as it is urgent
Not in level position after braking, need to start hand gear and be slowly moved to level position), manually control converts solenoid valve
The P mouth (air inlet) of 30 input terminals, R mouthfuls (exhaust outlet), S mouthfuls (exhaust outlet) and air inlet pipeline or gas exhaust piping or oil inlet pipe
The connection of road or oil return line controls the movement of piston 2, to control the braking or release of safety device；Certainly described
Hand-operated direction valve be necessarily placed at the position that securely and reliably cannot arbitrarily open, formulated rules and regulations and strictly implemented,
Ensure only have qualification, authorized personnel could open and use；Fig. 7 is the C-C partial sectional view direction of Fig. 1,
Highest point and the highest point contact condition schematic diagram of rack gear may occur when braking, projecting direction is from the past driving of lifting device
It observes in the direction of rack gear 17；Fig. 8 is the same view direction of Fig. 7, when left movable rack, right movable rack squeeze under elastic force promotion
Enter the schematic diagram in the tooth socket of lifting device drive rack.
Using each possible braking of lifting device of rack-and-pinion lifting device horizontal safety catch of the invention
The distance between anchor point is the integral multiple of its drive rack tooth pitch (p=π m), therefore is filled configured with safety arrestment of the invention
The installation method for the lifting device set includes, when carrying out and install related civil construction early period, it is necessary to by stop and layer
The difference in height stood carries out precise measurement, is constructed accordingly to each stop sill and accurately controls sill between stop and stop
The difference in height of upper plane is the integral multiple of drive rack tooth pitch (p=π m), according to the regulation of GB/T10058, allowable error is ±
10mm (construction internally controlling requirement should be less than this error amount)；It is correct to adjust lifting device and sliding tooth in lifting device installation
Item is worked in coordination, so that lifting device carriage just stops leveling accuracy from first layer and in median, then later stop
Leveling can meet the requirements, or even when other individual leveling element failures, also can guarantee stop leveling accuracy；
And the requirement that leveling keeps precision that can be much better than ± 20mm as defined in GB/T10058.
The present invention is engaged using hydraulic or pressure control rack gear, and pressure is stable, is conducive to reduce impact；It is nibbled using rack gear
Conjunction mode carries out safeguard protection braking, it is avoiding that existing friction catch mode is likely to occur because friction material abrasion or
Security risk caused by person's oil pollution etc. improves the reliability of safety arrestment；Even if meeting driving gear occurs problem
Situation also can be braked reliably, it is ensured that safety；Horizontal direction configures top set or bottom setting installation, has saved having in carriage
Imitate space；Rack gear engagement makes leveling that precision be kept to can achieve the requirement for being much better than ± 20mm as defined in GB/T10058；Therefore,
It can play and save the beneficial effect that the useful space significantly improves langding accuracy and safeguard protection braking quality.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of rack-and-pinion lifting device horizontal safety catch.
Fig. 2 is the A-A partial sectional view of Fig. 1.
Fig. 3 is in lifting device drive rack for the movable rack that view direction same as shown in Figure 2 is shown and engages
The schematic diagram of on-position.
Fig. 4 is the B-B partial sectional view of Fig. 1.
Fig. 5 is state of a control schematic diagram when solenoid valve 30 obtains electric.
State of a control schematic diagram when Fig. 6 is 30 power loss of solenoid valve.
Fig. 7 is the C-C partial sectional view direction of Fig. 1, and highest point and the highest point contact of rack gear may occur when braking
Status diagram.
Fig. 8 is the same view direction of Fig. 7, when left movable rack, right movable rack are squeezed into lifting under elastic force promotion and set
Schematic diagram in the tooth socket of standby drive rack.
Fig. 9 is the schematic diagram of embodiment 1.
Figure 10 is the case where safety catch of embodiment 1 brakes lifting device schematic diagram.
Figure 11 is that rack-and-pinion lifting device horizontal safety catch shown in FIG. 1 is in showing for application position state
It is intended to.
Specific embodiment
Embodiment 1, Fig. 9 be embodiment 1 schematic diagram, drawing show be lifting device side appearance, the level
Formula safety catch is mounted on the top of pinion and-rack lifting device, temporarily prepares fortune in free position, lifting device
Situation in going or being currently running, Figure 10 is that the horizontal safety catch of embodiment 1 brakes lifting device
Situation schematic diagram, (left and right described in Fig. 1, Fig. 2, Fig. 3, Fig. 7, Fig. 8 of front is inside lifting device toward lifting device side
Face sees, Fig. 9, Figure 10 are to see from the outside toward lifting device side, so left and right directions just reverse phase), the horizontal safety of use
Its internal structure each section of brake apparatus forms and what is acted on illustrates as shown in Fig. 1~8, Figure 11, and [0005] section, [0006]
Described in section, [0007] section, embodiment 1 pushes piston motion, pneumatic system by solenoid valve control compressed air or hydraulic oil
Either Hydraulic Elements had both included pneumatic element or Hydraulic Elements of the present invention, further include other necessary pneumatic elements or
Person's Hydraulic Elements；Due to being related to the matching coordinative of multiple transmission systems, so should be specifically noted that manufacture matter in manufacture and installation
Amount and installation quality, including must be ready-made including accurately controlling between stop and stop plane on sill described in [0008] section
Difference in height be drive rack tooth pitch (p=π m) integral multiple related work, guarantee necessary precision, after detection is qualified,
It can trial operation；For the electric control system of lifting device using embedded system as master control system, the course of work is to work as system
Disconnect lifting device general supply, the coil of solenoid valve 30
Power loss, solenoid valve 30 are in original state by action of reset spring, piston 2 moves back, left movable rack 12, right movable rack 16 with
17 positive engagement of lifting device drive rack, lifting device safety device are implemented to brake to lifting device；Lifting device general supply
Connect, the electric control system of lifting device according to operation need to control solenoid valve 30 coil electric or power loss, work as liter
When dropping equipment preparation starting, the drive system driving lifting device of the electric control system control lifting device of lifting device is upward
A mobile distance element makes the lower plane of load-supporting part 15 and the upper plane of right movable rack 16 and left movable rack 12 have one
Microgap, the numerical value of the microgap are left movable rack 12, right movable rack 16 and 17 sideshake of lifting device drive rack
0.2~0.6 times；Then control mating solenoid valve obtain it is electric, control solenoid valve 30 coil obtain it is electric, iron core movement band movable valve plug extremely
Operating position, piston 2 move forward, until left movable rack 12, right movable rack 16 are kept completely separate with lifting device drive rack 17
And have the free position in a bit of gap, it is ready for lifting device starting；When needing to stop after lifting device starting, lifting
The electric control system of equipment first disconnects lifting device motor power, and motor deceleration when close to stop position, such as connects
When nearly level position, the electric control system of lifting device controls the coil losing electricity of solenoid valve 30 on schedule, is reset to initial bit
It sets, control piston 2 moves back, until left movable rack 12, right movable rack 16 and 17 positive engagement of lifting device drive rack
Application position；If occurring abnormal conditions when lifting device is currently running, such as the unexpected power down of lifting device or because lifting
Equipment overspeed protective device action power dump or because lifting device reaches the limit of guarded by location device action and cuts off the power
Etc. so that lifting device general supply power loss, other electricity-loss braking devices include the included power loss band brake apparatus of motor immediately
Play a role braking, energy storage device delay after the completion of, the coil losing electricity of solenoid valve 30, solenoid valve 30 be reset to original state,
Control piston 2 moves back, left movable rack 12, right movable rack 16 and 17 positive engagement of lifting device drive rack, ensure that liter
The safety of equipment drops.
Embodiment 2, Fig. 9, Figure 10 are also the schematic diagram of embodiment 2, it is shown that one kind is mounted with tooth of the present invention
Take turns the elevator of rack gear lifting device horizontal safety catch, outside drawing same Fig. 7, Fig. 8, the horizontal safety arrestment of use
Its internal structure each section of device composition and effect illustrate as shown in Fig. 1~8, Figure 11, and [0005] section, [0006] section,
[0007] described in section, working principle and [0021] section are described identical.
For the benefit of reader understands the present invention, and this specification illustrates some specific structures and data, these be all for
Explanation and it is non-limiting, various changes, replacement and the change done within the scope of the basic thought of the claims in the present invention are produced
Raw all or part of equivalent, all within the scope of the invention as claimed.
Claims (8)
1. a kind of rack-and-pinion lifting device horizontal safety catch, characterized in that configured by horizontal direction, installation site
In lifting device car top or bottom or other reasonable positions, composition includes load-supporting part, rail assembly, work
Carry-over bar, the position-limit mechanism of movable rack, the operating mechanism of movable rack, the control device of the operating mechanism of movable rack, hand
Dynamic unlocking mechanism；The load-supporting part includes direct load-supporting part or middle transition load-supporting part；The rail assembly
Including the horizontal rail that upper rail, lower rail are formed, guide plate, and for track window aperture that movable rack passes through；Movable rack passes through
Track window aperture, the tooth form for the part of movable rack being associated with drive rack is in can be with the drive rack of lifting device
It engages and realizes and drive on position of the perhaps isolated position by the way that certain determinations are moved horizontally or be maintained on rail assembly
The engagement or separation of carry-over bar, the position of the determination, including the application position that is engaged with lifting device drive rack or
Person and lifting device drive rack are kept completely separate and have the free position in one section of gap, and described has one section of gap, refers to drive
Carry-over bar and movable rack tooth top interplanar corresponding thereto have the gap 2~5mm；The part of movable rack being associated with guide rail
At least one direction of inner face either above or below be provided with guide groove, the mating part of guide groove and guide plate is dynamic matches
It closes, to prevent outside or inside play of the movable rack to carriage；At the top of movable rack after entering on-position with lifting
The load-supporting part of equipment carriage directly contacts or contacts load-bearing by middle transition load-supporting part；The operating mechanism of movable rack
Manipulation activities rack gear is moved horizontally or is stopped on rail assembly on the position for being maintained at certain determinations, the movable rack
Operating mechanism be arranged in the support structure in horizontal plane direction of lifting device carriage；The operating mechanism of the movable rack
Control device include mechanical device or electric device or hydraulic device or pneumatic device or electric-liquid joint
Device or electric-gas combined unit；The electric-liquid combined unit or electric-gas combined unit includes solenoid valve, described
Electromagnetic valve coil obtains electric, power loss by the control of electrical control system of elevator.
2. rack-and-pinion lifting device horizontal safety catch according to claim 1, characterized in that the rail
Road component includes the horizontal rail that track window aperture, guide plate, load-supporting part and upper rail and lower rail are formed, the movable rack
Including right movable rack and left movable rack, the fit system of movable rack and horizontal rail is dynamic cooperation, and contact surface is light
Sliding low coefficient of friction surfaces；It is straight with load-supporting part and upper rail after entering on-position at the top of right movable rack and left movable rack
Contact load-bearing；The operating mechanism of the movable rack includes lever left, right lever, left fixed shaft, right fixed shaft, activity
Axis, pulling block, bracket, spring, adjusting nut group, pull rod, jacking block, piston, cylinder body；The piston, cylinder body include fluid pressure type or
Person's vapour-pressure type；The operating mechanism of the movable rack is horizontal plane direction arrangement, and actual motion direction is square along the horizontal plane
To, it is mobile to move forward to drive rack direction after cylinder body direction is before drive rack direction is, after being to the movement of cylinder body direction
It moves；The operating mechanism course of work of movable rack is, when the lower interface of cylinder body is exhaust outlet or oil return opening, upper interface are air inlet
When mouth or oil inlet, piston downlink, jacking block are followed piston downlink by the elastic force effect of spring and drive pull rod, pulling block together
Downlink, the movable axis being fixed on pulling block follow pulling block downlink, drive lever left, right lever lower arm around left fixed shaft, right fixation
Axis is rotated toward outside, and lever left, the left movable rack of upper arm drive of right lever, right movable rack are into lifting device drive rack
Heart direction is mobile, until the application position at a fully engaged with lifting device drive rack, jacking block stops downlink, but piston continues
Downlink a small distance keeps having a bit of gap with jacking block, to guarantee that left movable rack, right movable rack and lifting device drive
Carry-over bar positive engagement, a bit of gap, refers to the gap 2~5mm；When the lower interface of cylinder body is air inlet or oil inlet
Mouthful, upper interface be exhaust outlet or oil return opening when, piston stroking upward, jacking block by piston press also uplink and drive pull rod, draw
Compressed spring, the movable axis being fixed on pulling block follow pulling block uplink, drive lever left, right lever lower arm uplink block simultaneously together
It is rotated around left fixed shaft, right fixed shaft toward inside, lever left, the left movable rack of upper arm drive, the right movable rack of right lever are past
The direction for leaving lifting device drive rack center is mobile, until being kept completely separate with lifting device drive rack and having a bit of
The free position of gap；Adjusting nut group is used for the pressure of adjustment spring, the highest order of the upper surface of bracket (7) fixed spring (6)
It sets；Fixed frame is connect with the main load-carrying members of lifting device carriage, and is risen to horizontal safety catch and supported fixed make
With；The rack-and-pinion lifting device horizontal safety catch, installation site include carriage top or bottom,
Or other reasonable positions.
3. the safety catch of pinion and-rack lifting device according to claim 1, characterized in that the activity
The electric-liquid combined unit or electric-gas combined unit that the control device of the operating mechanism of rack gear includes, including, the cylinder body
Lower interface or upper interface be chosen to be air inlet or oil inlet or for the state of exhaust outlet or oil return opening, pass through electricity
Magnet valve controls, and the solenoid valve is two-position-five-way solenoid valve, and spool is reset to initial bit by action of reset spring when power loss
Set, P mouthfuls of solenoid valve leads to B mouthful, P mouthfuls connect compressed air gas source or pressure oil oil sources oil inlet pipe, B mouthfuls connect cylinder body on connect
Mouthful, R mouthful lead to A mouthfuls, R mouthfuls run in air pipe or oil return line, A mouthful connect the lower interface of cylinder body, at this time, select cylinder body on connect
The lower interface for mouthful being air inlet perhaps oil inlet cylinder body is exhaust outlet or oil return opening, piston downlink, left movable rack, right work
Carry-over bar and lifting device drive rack positive engagement；Spool is mobile up to operating position, solenoid valve P by electromagnet effect when obtaining electric
Mouthful lead to A mouthfuls, the P mouthfuls of air inlet pipelines for connecing compressed air gas source or pressure oil oil sources oil inlet pipe, A mouthfuls connect and connect under cylinder body
Mouthful, S mouthful lead to B mouthfuls, S mouthfuls run in air pipe or oil return line, B mouthful connect the upper interface of cylinder body, at this time, select and connect under cylinder body
The upper interface for mouthful be air inlet perhaps oil inlet cylinder body is exhaust outlet or oil return opening, piston stroking upward, up to left movable rack,
Right movable rack and lifting device drive rack are kept completely separate and have the free position in a bit of gap.
4. rack-and-pinion lifting device horizontal safety catch according to claim 1, characterized in that the electricity
Magnet valve coil electric, power loss by lifting device electric control system control, the solenoid valve of the electric control system
It further include the contactor only controlled by general supply or the combination of relay adjunction tentaculum and energy storage device, institute in control unit
The normally-closed contact of the only contactor that control by general supply or the combination of relay adjunction tentaculum stated be connected across electromagnetic valve coil with
Between energy storage device, when lifting device obtains electric, normally-closed contact is disconnected, and the connection between electromagnetic valve coil and energy storage device is also broken
It opens, energy storage device energy storage；When lifting device power loss, other electricity-loss braking devices include that the included power loss band brake apparatus of motor is vertical
Play a role braking, but electromagnetic valve coil not power loss immediately, the relay only controlled by general supply or connects
Tentaculum normally-closed contact power loss closure, connect electromagnetic valve coil with energy storage device, when energy storage device is to the delay of electromagnetic valve coil
Between constant design tuning be other electricity-loss braking devices individually completes braking time and the electric-liquid combined unit that braking needs or
The difference of person's electric-gas combined unit movement delay time；After the completion of energy storage device delay, electromagnetic valve coil power loss；When lifting is set
When standby general supply is disconnected without electricity, lifting device remain static, lifting device general supply disconnects, electromagnetic valve coil power loss, electricity
Magnet valve is in original state, piston downlink, left movable rack, right movable rack and lifting device sliding tooth by action of reset spring
Positive engagement, lifting device safety device are implemented to brake to elevator；Lifting device general supply connects, the electric-controlled of lifting device
System processed according to operation need to control electromagnetic valve coil electric or power loss, when lifting device prepare start when, lifting device
The electromagnet of electric control system control solenoid valve obtain electric, iron core movement band movable valve plug is to operating position, piston stroking upward, until
Left movable rack, right movable rack and lifting device drive rack are kept completely separate and have the free position in a bit of gap, to rise
Drop equipment starting is ready；When needing to stop after lifting device starting, the electric control system of lifting device first disconnects lifting
Equipment motor power, motor deceleration, when close to stop position, the stop position includes level position, and lifting is set
Standby electric control system controls electromagnetic valve coil power loss on schedule, is reset to initial position, controls piston downlink, left movable teeth
Item, right movable rack and lifting device drive rack positive engagement are implemented to brake；If there is abnormal conditions, including lifting device
Unexpected power down or because lifting device overspeed protective device action power dump or because lifting device reaches the limit of position
Protective device action power dump is set, for lifting device general supply immediately without electricity, other electricity-loss braking devices include motor at this time
Included power loss band brake apparatus plays a role braking immediately, electromagnetic valve coil power loss after the completion of energy storage device delay, and solenoid valve is multiple
Position is original state, control piston downlink, left movable rack, right movable rack and lifting device drive rack positive engagement, is protected
The safety of lifting device is demonstrate,proved.
5. rack-and-pinion lifting device horizontal safety catch according to claim 1, characterized in that the hand
Dynamic unlocking mechanism, including, a hand-operated direction valve is provided between solenoid valve and gas source, when being used for required after power failure, people
Work manually control transformation solenoid valve input terminal P mouth, R mouthfuls, S mouthfuls and air inlet pipeline or gas exhaust piping or oil inlet pipe or
The connection of oil return line, controls the movement of piston, to control the braking or release of safety device, the hand-operated direction valve
It is necessarily placed at the position that securely and reliably cannot arbitrarily open, formulated rules and regulations and is strictly implemented, it is ensured that is only had
Qualification, authorized personnel could open and use.
6. rack-and-pinion lifting device horizontal safety catch according to claim 1, characterized in that configured with this
The installation method of the lifting device of the safety catch of invention includes, must when carrying out and install related civil construction early period
Precise measurement must be carried out by the difference in height to stop and stop, be constructed accordingly to each stop sill and accurately control layer
Standing between stop, the difference in height of plane is the integral multiple of drive rack tooth pitch on sill, correct to adjust in lifting device installation
Section lifting device and drive rack are worked in coordination, so that lifting device just stops leveling accuracy from first layer and in median.
7. rack-and-pinion lifting device horizontal safety catch according to claim 1, characterized in that the electricity
Magnet valve, electromagnetic valve coil electric, power loss by the control of lifting device electric control system, include as follows in rate-determining steps
Rate-determining steps, when lifting device prepares to start, the electric control system control lifting device drive system driving of lifting device
Lifting device moves up a distance element, makes the lower plane of load-supporting part and the upper plane of right movable rack and left movable rack
There is a microgap, the numerical value of the microgap is left movable rack, right movable rack and lifting device drive rack sideshake
0.2~0.6 times；Then the coil of the electric control system control solenoid valve of lifting device obtains electric.
8. a kind of elevator, characterized in that install and use gear teeth described in any claim in claim 1- claim 7
Lifting device horizontal safety catch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611221347.4A CN107032251B (en) | 2016-12-27 | 2016-12-27 | Rack-and-pinion lifting device horizontal safety catch |
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| CN201611221347.4A CN107032251B (en) | 2016-12-27 | 2016-12-27 | Rack-and-pinion lifting device horizontal safety catch |
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| CN107032251B true CN107032251B (en) | 2018-12-18 |
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| CN107899257B (en) * | 2017-11-28 | 2020-03-24 | 华强方特（芜湖）文化科技有限公司 | Annular wiya system convenient to operate |
| CN112828356A (en) * | 2021-01-27 | 2021-05-25 | 北京航天华世科技股份有限公司 | Planer type milling machine and method for adjusting height of horizontal milling head of planer type milling machine |
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| US7909142B2 (en) * | 2006-05-19 | 2011-03-22 | Hydro-Mobile Inc. | Braking device for elevating platform assembly |
| CN101003343A (en) * | 2006-12-30 | 2007-07-25 | 济南重工股份有限公司 | Dooly compartment self going type elevator |
| US8210319B2 (en) * | 2007-08-31 | 2012-07-03 | John W. Boyd | Hydraulic elevating platform assembly |
| CN101172554B (en) * | 2007-09-27 | 2011-08-03 | 日立电梯（中国）有限公司 | Bidirectional safety tongs device for elevator |
| CN102259783B (en) * | 2011-03-17 | 2013-04-10 | 太仓市康辉科技发展有限公司 | Mechanical device stopping in case of overspeed |
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Effective date of registration: 20191224 Address after: 300000 Tianjin Tianjin Tianjin aviation Computing Technology Research Institute, Dongli District, Tianjin Patentee after: TIANJIN JINHANG INSTITUTE OF COMPUTING TECHNOLOGY Address before: 4, 528459 floor, No. 2, Xinxing Avenue, Zhongshan Town, Guangdong, A5 Patentee before: Liao Zhongmin |