CN108609451B - Elevator braking system based on hydraulic cylinder triggering buffer type braking - Google Patents

Elevator braking system based on hydraulic cylinder triggering buffer type braking Download PDF

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Publication number
CN108609451B
CN108609451B CN201810447435.9A CN201810447435A CN108609451B CN 108609451 B CN108609451 B CN 108609451B CN 201810447435 A CN201810447435 A CN 201810447435A CN 108609451 B CN108609451 B CN 108609451B
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China
Prior art keywords
shaft
hydraulic cylinder
shell
buffer
control valve
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CN201810447435.9A
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CN108609451A (en
Inventor
朱文祥
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NANTONG CHANG RONG MECHANICAL AND ELECTRICAL Co.,Ltd.
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Nantong Chang Rong Mechanical And Electrical Co ltd
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    • 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
    • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • B66B5/044—Mechanical overspeed governors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
    • B66B11/0461—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with rack and pinion gear
    • 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

The invention provides an elevator braking system based on hydraulic cylinder-triggered buffer braking, which comprises a connecting device, a braking device and a speed sensing device, wherein the connecting device is connected with a guide rail in a sliding manner, the power receiving end of the braking device is connected with the connecting device, the power output end of the braking device is connected with the speed sensing device, the connecting device transmits the movement speed of a moving object to the speed sensing device through the braking device, the movement state of the speed sensing device is divided into an unfired state and a triggered state, when the moving object normally runs, the speed sensing device is in the unfired state, the braking device does not influence the running of the moving object, when the movement speed of the moving object is too high, the speed sensing device is in the triggered state, the braking device brakes the moving object, and a buffer mechanism is arranged between the power output end of the connecting device and the power receiving end of the braking device and is connected and driven through the buffer mechanism.

Description

Elevator braking system based on hydraulic cylinder triggering buffer type braking
Technical Field
The invention relates to a mechanical falling protector, in particular to a falling protector triggered by speed.
Background
The falling protector is mainly applied to safety protection of elevators and hoists, and avoids damage to personnel and equipment caused by rapid sliding of the elevators and the hoists.
The existing falling protector is designed primarily by considering locking and braking at the fastest speed, so that the braking distance is reduced and the damage to people is avoided, and the design concept is also adopted in the protection system of the actual elevator, but in the actual use process, the passengers are not tired of old people who take a year, when the elevator is converted from rapid gliding to braking, the passengers are enabled to land on the floors of elevator cars hard, the passengers collide with the floors of the elevator cars, secondary damage can be caused to the passengers inside, particularly, the old people who take a year, and the probability of injury is greatly increased.
The inventor of the invention submits a speed-limiting falling protector in 2017, 2, 5 and the patent numbers are as follows: 2017100647320, the document describes a trigger mechanism, which has significant sensing effect on moving objects and large adjustment range of sensitivity, the invention uses the motion sensing trigger mode of the patent for reference, carries out design upgrade on the brake control of the elevator, adopts a brand new hydraulic resistance brake mode to brake, has better, stable and reliable brake effect, reduces the vibration generated in the brake process of the elevator failure and the sudden falling, avoids the discomfort of passengers or the damage of goods, and prevents the passengers and valuables from causing secondary damage in the sudden brake.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a gradual braking elevator braking protection system, which adopts a brand new hydraulic braking mode to solve the problem of secondary damage to passengers and valuables in the conventional elevator braking protection system.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.
The elevator braking system based on hydraulic cylinder-triggered buffer braking comprises a connecting device, a braking device and a speed sensing device, wherein the connecting device is connected with a guide rail in a sliding mode, a power receiving end of the braking device is connected with the connecting device, a power output end of the braking device is connected with the speed sensing device, the connecting device transmits the movement speed of a moving object to the speed sensing device through the braking device, the movement state of the speed sensing device is divided into an unfired state and a triggered state, when the moving object normally operates, the speed sensing device is in the unfired state, the braking device does not influence the operation of the moving object, and when the movement speed of the moving object is too high, the speed sensing device is in the triggered state and the braking device brakes the moving object at the moment;
a buffer mechanism is arranged between the power output end of the connecting device and the power receiving end of the braking device, and the power output end of the connecting device and the power receiving end of the braking device are connected and driven through the buffer mechanism;
buffer gear include the buffering shell, set up the buffering component in the buffering shell, the buffering shell be one end opening, other end confined tubular structure, and the open end matches and installs the buffering lid to the buffering shell is arranged with connecting device's power take off coaxial, the blind end of buffering shell is still coaxial and has been seted up the through-hole, arresting gear's coaxial fixed cover of power receiving terminal connect in the through-hole.
As a further improvement of the present solution.
The buffer shell is characterized in that the inner cavity bottom of the buffer shell is also provided with three fixing bulges which are close to the inner cavity wall of the buffer shell, the fixing bulges are uniformly distributed at intervals along the circumferential direction of the buffer shell, the fixing bulges are provided with through holes, the through holes of the three fixing bulges are positioned on the same circle concentric with the buffer shell, and the inner cavity bottom of the buffer shell is also coaxially provided with a fixing sleeve;
the buffer component comprises a buffer frame, a loop bar and a buffer spring, wherein the loop bar is of an annular structure and is fixedly sleeved in a penetrating hole arranged in a fixed bulge, the three fixed bulges are respectively a first fixed bulge, a second fixed bulge and a third fixed bulge, the loop bar is divided into three sections which are all of arc structures and respectively are a first sleeved section, a second sleeved section and a third sleeved section, one end of the first sleeved section is positioned between the first fixed bulge and the second fixed bulge, the other end of the first sleeved section penetrates through the penetrating hole arranged in the second fixed bulge and is positioned between the second fixed bulge and the third fixed bulge, one end of the second sleeved section is positioned between the second fixed bulge and the third fixed bulge and is fixedly connected with the first sleeved section, the other end of the second sleeved section penetrates through the penetrating hole arranged in the third fixed bulge and is positioned between the third fixed bulge and the first fixed bulge, one end of the third sleeved section is positioned between the third fixed bulge and the second sleeved section, The other end of the connecting rod penetrates through a penetrating hole formed in the first fixing protrusion, is positioned between the first fixing protrusion and the second fixing protrusion and is fixedly connected with the first sleeving section;
the buffer frame is of an annular structure, the buffer frame is movably sleeved outside the fixed sleeve, the outer circular surface of the buffer frame is provided with three sleeving bulges, the three sleeving bulges are uniformly distributed at intervals along the circumferential direction of the buffer frame, the sleeving bulges are provided with trepanning holes, the trepanning holes of the three sleeving bulges are positioned on the same circle concentric with the buffer frame, the buffer frame is movably sleeved outside the loop bar through the trepanning holes, the three sleeving bulges are respectively sleeved with a bulge I, a sleeving bulge II and a sleeving bulge III, the sleeving bulge I is movably sleeved outside the sleeving section I, the sleeving bulge II is movably sleeved outside the sleeving section II, and the sleeving bulge III is movably sleeved outside the sleeving section III;
the buffer spring is an annular spring, the buffer spring is provided with three buffer springs I, two buffer springs II and three buffer springs III, the buffer spring is sleeved outside the first sleeving section, one end of the first sleeving spring is abutted against the first sleeving protrusion, the other end of the first sleeving spring is abutted against the first fixing protrusion, the buffer spring is sleeved outside the second sleeving section, one end of the second sleeving spring is abutted against the second sleeving protrusion, the other end of the second sleeving spring is abutted against the second fixing protrusion, the three buffer springs are sleeved outside the third sleeving section, one end of the third sleeving spring is abutted against the third sleeving protrusion, and the other end of the third sleeving spring is abutted against the third fixing protrusion;
the coaxial connection pad that is provided with of connecting device's power take off end, the coaxial jack of having seted up of buffering lid, connecting device's power take off end passes the jack and is located the buffering shell and the connection pad is located the buffering shell, connection pad and buffering frame between be provided with the mounting and both carry out fixed connection through the mounting, the mounting including set up in the dead lever of buffering frame, set up in the connection pad and with the corresponding assorted fixed orifices of dead lever.
As a further improvement of the present solution.
The connecting device comprises a connecting mechanism and a transmission mechanism, wherein the connecting mechanism is used for being connected with the guide rail in a sliding manner, and the transmission mechanism is used for transmitting the movement speed of the moving object to the speed sensing device through the braking device;
the connecting mechanism comprises an installation shell and an installation cover which are of a cuboid structure, wherein a sliding groove with a guide direction parallel to the guide rail is arranged on the surface of the installation shell facing the guide rail, the sliding groove divides the surface of the installation shell facing the guide rail into two parts, namely an installation surface a and an installation surface b, the installation cover comprises an installation cover a and an installation cover b, the installation cover a is fixedly installed on the installation surface a, the side surface of the installation cover a facing the installation surface b is located in a notch area of the sliding groove, the installation cover b is fixedly installed on the installation surface b, the side surface of the installation cover b facing the installation surface a is located in the notch area of the sliding groove, and the side surface of the installation cover a facing the installation surface b and the side surface of the installation cover b facing the;
the transmission mechanism comprises a rack, a driven gear and a transmission shaft, the extending direction of the rack is parallel to the guiding direction of the guide rail, the rack is arranged in the sliding groove, a connecting plate which extends towards the guide rail direction, penetrates through the limiting groove and is positioned outside the mounting cover is arranged on the surface of the rack facing the guide rail, a fastener is arranged between the connecting plate and the guide rail, the connecting plate and the guide rail are fixedly mounted through the fastener, and the limiting groove enables the mounting shell to move only along the guiding direction of the guide rail;
the groove wall of the chute facing the tooth surface of the rack is provided with a mounting groove a, the mounting groove a is parallel to the mounting surface a and is provided with an avoiding hole far away from the groove wall of the guide rail, the axial direction of the transmission shaft is perpendicular to the guide direction of the guide rail, the power input end of the transmission shaft penetrates through the avoiding hole and is positioned in the mounting groove a, the connecting disc is arranged at the power output end of the transmission shaft, the power output end of the transmission shaft penetrates through the jack and is positioned in the buffer shell, the connecting disc is positioned in the buffer shell, the driven gear is fixedly sleeved outside the power input end of the transmission shaft and is meshed with the rack, and the moving object moves and pulls the transmission shaft to synchronously rotate through the rack and the.
As a further improvement of the present solution.
The braking device comprises a braking mechanism, a hydraulic pipe network and a control valve, wherein a power receiving end of the braking mechanism penetrates through a through hole, is connected with the buffer shell and is used for providing motion resistance for the moving object;
the brake mechanism comprises a brake shell, a hydraulic cylinder and a linkage mechanism, wherein the brake shell is of a cylinder structure with one end open and the other end closed, a brake cover is arranged at the open end in a matched manner, a bearing hole a is coaxially formed in the closed end of the brake shell, a bearing hole b is coaxially formed in the end surface of the brake cover, and the closed end of the brake shell is coaxially and fixedly arranged on the buffer mechanism;
the hydraulic cylinder comprises a hydraulic cylinder body, a piston and a piston rod, wherein a fixed sleeve communicated with an inner cavity of the brake shell is arranged on the outer circular surface of the brake shell, the hydraulic cylinder body is of a cylinder structure with two open ends and the axial direction of the hydraulic cylinder body is vertical to the axial direction of the brake shell, the hydraulic cylinder body is fixedly arranged in the fixed sleeve, one open end of the hydraulic cylinder body is positioned in the brake shell, the other open end of the hydraulic cylinder body is positioned outside and is matched with a hydraulic cylinder cover, the hydraulic cylinder cover is provided with an interface communicated with the inner cavity of the hydraulic cylinder body, the piston is arranged in the hydraulic cylinder body and forms sealed sliding fit with the piston, one end of the;
the four hydraulic cylinders are uniformly distributed at intervals along the circumferential direction of the brake shell, the four hydraulic cylinders are respectively a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder and a fourth hydraulic cylinder, the first hydraulic cylinder and the second hydraulic cylinder are symmetrically distributed about the axis of the transmission shaft, and the third hydraulic cylinder and the fourth hydraulic cylinder are symmetrically distributed about the axis of the transmission shaft;
the linkage mechanism is arranged in the brake shell and comprises a first linkage shaft, a first rotary table, a first intermediate shaft, a second rotary table and a second linkage shaft, wherein the first linkage shaft, the first rotary table, the first intermediate shaft, the second rotary table and the second linkage shaft are sequentially arranged along the direction of the closed end of the brake shell pointing to the open end of the brake shell, the power input end of the first linkage shaft penetrates through a bearing hole a and is connected with the buffer mechanism, the first rotary table is coaxially and fixedly connected with the power output end of the first linkage shaft, the axial directions of the first intermediate shaft and the second intermediate shaft are parallel to the axial direction of the transmission shaft, the outer part of the first intermediate shaft is movably sleeved with a first connecting sleeve and the outer part of the second intermediate shaft is movably sleeved with a second connecting sleeve, the second linkage shaft and the linkage shaft are coaxially arranged, the power input end of the second linkage shaft is positioned in the brake, the second rotating disc is coaxially and fixedly sleeved at the power input end of the second linkage shaft;
the driving end of the piston rod of the first hydraulic cylinder and the driving end of the piston rod of the second hydraulic cylinder are both in arc-shaped groove structures, the driving end of the piston rod of the first hydraulic cylinder and the driving end of the piston rod of the second hydraulic cylinder are spliced into a first ring sleeve which is slidably sleeved on the first connecting sleeve, the driving end of the piston rod of the third hydraulic cylinder and the driving end of the piston rod of the fourth hydraulic cylinder are both in arc-shaped groove structures, and the driving end of the piston rod of the third hydraulic cylinder and the driving end of the piston rod of the fourth hydraulic cylinder are spliced into a second ring sleeve which is slidably sleeved;
a first linkage plate is arranged between the first rotary table and the first intermediate shaft, one end of the first linkage plate is hinged with the first rotary table, the hinged position deviates from the circle center of the first rotary table, and a core line of a hinged shaft is parallel to the axial direction of the first linkage shaft;
a second linkage plate is arranged between the first intermediate shaft and the second intermediate shaft, one end of the second linkage plate is hinged with the power output end of the first intermediate shaft, and the core line of the hinge shaft is parallel to the axial direction of the first linkage shaft, and the other end of the second linkage plate is hinged with the power input end of the second intermediate shaft, and the core line of the hinge shaft is parallel to the axial direction of the first linkage shaft;
a third linkage plate is arranged between the second intermediate shaft and the second rotary table, one end of the third linkage plate is hinged with the power output end of the second intermediate shaft, a core line of a hinged shaft is parallel to the axial direction of the first linkage shaft, the other end of the second linkage plate is hinged with the second rotary table, the hinged part deviates from the circle center of the second rotary table, and the core line of the hinged shaft is parallel to the axial direction of the first linkage shaft;
and a speed increasing device is arranged between the second linkage shaft and the speed sensing device and is connected and driven through the speed increasing device, and the speed increasing device is used for increasing the speed transmitted to the speed sensing device by the braking device and does not influence the operation of the braking device.
As a further improvement of the present solution.
The control valve comprises a first control valve, a second control valve and a mounting plate, wherein the first control valve is used for controlling the unit flow of hydraulic oil between the first hydraulic cylinder and the second hydraulic cylinder, the second control valve is used for controlling the unit flow of hydraulic oil between the third hydraulic cylinder and the fourth hydraulic cylinder, the first control valve and the second control valve are fixedly mounted on the mounting plate, the shape and the structure of the first control valve are consistent with those of the second control valve, and the first control valve and the second control valve are of an integral structure;
the first control valve and the second control valve both comprise control valve bodies, each control valve body comprises a support shell and a control valve core, each support shell is of a rectangular cylinder structure with one open end and the other closed end, the open end of each support shell is provided with a valve cover in a matched mode, a sliding hole communicated with the inner cavity of each support shell is formed in each valve cover, the closed end of each support shell is fixedly connected with the mounting plate, each support shell is also provided with a first connecting nozzle and a second connecting nozzle which are communicated with the inner cavity of each support shell, the first connecting nozzle and the second connecting nozzle are respectively arranged on different side faces of each support shell, and each control valve core is arranged in the inner cavity of each support shell;
the control valve core comprises a valve rod, a sealing plug a close to the valve cover and a sealing plug b far away from the valve cover, the sealing plug a and the sealing plug b are in sealed sliding fit with the support shell, the sealing plug a and the sealing plug b are connected through a connecting rod, the first connecting nozzle and the second connecting nozzle are located between the sealing plug a and the sealing plug b, one end of the valve rod is connected with the sealing plug a, and the other end of the valve rod penetrates through the sliding hole and is connected with the speed sensing device;
the hydraulic pipe network comprises a first hydraulic pipe, a second hydraulic pipe, a third hydraulic pipe and a fourth hydraulic pipe, one end of the first hydraulic pipe is communicated with an interface of the first hydraulic cylinder, the other end of the first hydraulic pipe is communicated with a connecting nozzle of the first control valve, one end of the second hydraulic pipe is communicated with an interface of the second hydraulic cylinder, the other end of the second hydraulic pipe is communicated with a connecting nozzle of the first control valve, one end of the third hydraulic pipe is communicated with an interface of the third hydraulic cylinder, the other end of the third hydraulic pipe is communicated with a connecting nozzle of the second control valve, one end of the fourth hydraulic pipe is communicated with an interface of the fourth hydraulic cylinder, and the other end of the fourth hydraulic pipe is communicated with a connecting nozzle of the second control valve.
As a further improvement of the present solution.
The speed sensing device comprises a sensing shaft, a fixed component, a sliding component and a pulling component, wherein the axial direction of the sensing shaft is parallel to the axial direction of the transmission shaft, and the power receiving end of the sensing shaft is connected with the speed increasing device and can rotate around the axial direction of the speed increasing device;
the fixed component comprises a fixed sleeve in an annular structure, the fixed sleeve is fixedly sleeved on the power output end of the induction shaft, and a hinged bulge a is arranged on the outer circular surface of the fixed sleeve;
the sliding component comprises a sliding sleeve in an annular structure, the sliding sleeve is arranged between the power output end of the induction shaft and the control valve, the sliding sleeve is movably sleeved outside the induction shaft, a hinge bulge b is arranged on the outer circular surface of the sliding sleeve, and the sliding sleeve can rotate around the axial direction of the sliding sleeve and can move along the axial direction of the induction shaft;
the pulling component is arranged between the sliding component and the control valve and comprises a pull rod and a pulling sleeve, the pull rod is of an annular structure and is movably sleeved outside the induction shaft, one end of the pull rod is fixedly connected with the sliding sleeve, the other end of the pull rod is a pulling end and is provided with an external step a, the pulling sleeve is of an annular structure, the pulling sleeve is provided with an internal step towards the annular end of the sliding component, the pulling sleeve is sleeved outside the pull rod, the internal step is mutually abutted with the external step a, the inner cavity of the pulling sleeve is in sliding fit with the outer circular surface of the pull rod, the sliding sleeve moves along the axial direction of the induction shaft and pulls the pulling sleeve to move synchronously through the pull rod, the outer circular surface of the pulling sleeve is also provided with a connecting bulge a and a connecting bulge b, the valve rod of the control valve I is fixedly connected with the connecting bulge a, and the valve rod of the control valve II is fixedly connected with the connecting bulge b;
the speed sensing device also comprises a speed sensing mechanism, wherein the speed sensing mechanism comprises a stretching component and a connecting rod, the stretching component comprises a stretching rod, one end of the stretching rod is hinged with a hinge bulge a arranged on the outer circular surface of the fixed sleeve, a hinge shaft core wire is vertical to the axial direction of the sensing shaft, the other end of the stretching rod is provided with a load body, one end of the connecting rod is hinged with a hinge bulge b arranged on the outer circular surface of the sliding sleeve, the hinge shaft core wire is vertical to the axial direction of the sensing shaft, the other end of the connecting rod is hinged with the stretching rod, the hinge shaft core wire is vertical to the axial direction of the sensing shaft, and hinge grooves are formed in the hinge positions of the stretching rod and the hinge bulge a, the hinge positions of the connecting rod and the hinge bulge b and the;
the speed induction mechanisms are three and are uniformly distributed at intervals along the circumferential direction of the induction shaft.
As a further improvement of the present solution.
The speed sensing device also comprises a self-locking mechanism, wherein the self-locking mechanism is used for preventing the speed sensing device from being automatically switched into an un-triggered state;
the sliding sleeve is divided into two parts along the axial direction of the induction shaft, and the two parts are respectively a driving section close to the pulling member and an installation section close to the fixing member, the driving section is connected with the pulling member, and the self-locking mechanism is arranged on the outer circular surface of the installation section;
the outer circle surface of the mounting section is provided with a mounting hole communicated with the annular inner cavity of the mounting section, and the part of the induction shaft between the sliding component and the fixed component is provided with a self-locking groove in an annular structure;
the self-locking mechanism comprises a self-locking shell and a self-locking component arranged in the self-locking shell, the self-locking shell is of a cylinder structure with one end open and the other end closed, an extending hole is coaxially formed in the closed end, the open end of the self-locking shell is fixedly arranged on the outer circular surface of the mounting section, and the mounting hole is communicated with the inner cavity of the self-locking shell;
the auto-lock component include from locking lever, auto-lock spring, the one end of auto-lock lever be the free end and lie in the auto-lock shell outside, the other end is the auto-lock end and pass and set up in the hole that stretches out of auto-lock shell blind end, the inner chamber of auto-lock shell, set up in the mounting hole of the outer disc of installation segment and with the outer disc contact of induction shaft, the part that the auto-lock lever lies in the auto-lock shell is provided with external step b, the auto-lock spring cup joint in the auto-lock lever outside and the initial condition of auto-lock spring is compression state, the one end of auto-lock spring is contradicted at the bottom of the inner chamber of auto-lock shell, the other end is contradicted with external step b, the elasticity.
Compared with the prior art, the self-locking brake control system has the advantages that the self-locking brake control system is connected with the guide rail in a sliding mode and is fixedly installed on the moving object, the brake control system adopted by the invention has the advantages that the conventional weightlessness triggering is not adopted, the triggering is carried out in a mode of sensing the moving speed of the moving object, and when the moving speed of the moving object in the vertical direction/the horizontal direction is too high, the brake control system is triggered to start working, so that the moving speed of the moving object is reduced until the moving speed is zero, and the safety of the moving object is protected.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following embodiments will be provided
The drawings that need to be used are briefly introduced, it being clear that the drawings in the following description are only some embodiments of the invention, and that further drawings can be derived from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a combination view of the buffer mechanism, the connecting device and the guide rail according to the present invention.
Fig. 4 is a schematic structural diagram of the connecting device of the present invention.
Fig. 5 is a schematic structural diagram of the connecting device of the present invention.
Fig. 6 is a diagram showing the transmission shaft and the damper mechanism according to the present invention.
Fig. 7 is a diagram showing the transmission shaft and the damper mechanism according to the present invention.
Fig. 8 is a view showing the transmission shaft and the buffer bracket according to the present invention.
Fig. 9 is a sectional view of a damper mechanism of the present invention.
Fig. 10 is a schematic structural view of the braking device of the present invention.
Fig. 11 is a schematic structural view of the braking device of the present invention.
Fig. 12 is a diagram showing the hydraulic cylinder and the interlocking mechanism according to the present invention.
Fig. 13 is a cross-sectional view of the hydraulic cylinder of the present invention.
Fig. 14 is a combination view of the interlocking mechanism and the buffer housing of the present invention.
Fig. 15 is a schematic structural view of the interlocking mechanism of the present invention.
Fig. 16 is a schematic structural view of the interlocking mechanism of the present invention.
Fig. 17 is a diagram showing the acceleration device and the control valve according to the present invention.
Fig. 18 is a schematic structural view of a speed increasing device of the present invention.
Fig. 19 is a matching diagram of the induction shaft, the planet carrier and the linkage shaft ii of the present invention.
Fig. 20 is a schematic structural view of a control valve of the present invention.
Fig. 21 is a cross-sectional view of the control valve of the present invention.
Fig. 22 is a diagram showing the speed sensor and the control valve according to the present invention.
FIG. 23 is a schematic structural diagram of a speed sensing device according to the present invention.
FIG. 24 is a schematic structural diagram of a speed sensing device according to the present invention.
Fig. 25 is a combination view of the slide member, the pulling member, and the self-locking mechanism of the present invention.
Fig. 26 is a drawing showing the sliding member and the pulling member according to the present invention.
Fig. 27 is a combination view of the slide member and the self-lock mechanism of the present invention.
Detailed Description
As shown in fig. 1 to 27, the self-locking brake control system of the present invention is slidably connected to the guide rail 100 and is fixedly installed on the moving object, and the brake control system of the present invention is advantageous in that it does not adopt a conventional weightlessness trigger but adopts a mode of sensing the moving speed of the moving object, and when the moving speed of the moving object in the vertical direction/horizontal direction is too fast, the brake control system is triggered to start working, so that the moving speed of the moving object is reduced to zero, and the safety of the moving object is protected.
As shown in fig. 1 to 27, the elevator braking system based on hydraulic cylinder-triggered cushion braking comprises a connecting device 200, a braking device 400, a speed sensing device 600, the connecting device 200 is connected with the guide rail 100 in a sliding way, the power receiving end of the braking device 400 is connected with the connecting device 200, the power output end is connected with the speed sensing device 600, the connecting means 200 transmits the moving speed of the moving object to the speed sensing means 600 through the braking means 400, the motion state of the speed sensing device 600 is divided into an unfired state and a triggered state, when the moving object normally operates, the speed sensing device 600 is in an unfired state and the braking device 400 does not affect the operation of the moving object, when the moving speed of the moving object is too fast, the speed sensing device 600 is in a triggered state and the braking device 400 restrains the moving object at this time.
As shown in fig. 1 to 5, the connecting device 200 includes a connecting mechanism 210 and a transmission mechanism 220, wherein the connecting mechanism 210 is configured to be slidably connected to the guide rail 100, and the transmission mechanism 220 is configured to transmit the moving speed of the moving object to the speed sensing device 600 through the braking device 400.
The connecting mechanism 210 comprises an installation shell 211 and an installation cover which are of a cuboid structure, wherein a sliding groove with a guide direction parallel to the guide rail 100 is formed in the surface, facing the guide rail 100, of the installation shell 211, the sliding groove divides the surface, facing the guide rail 100, of the installation shell 211 into two parts, namely an installation surface a and an installation surface b, the installation cover comprises an installation cover a212 and an installation cover b213, the installation cover a212 is fixedly installed on the installation surface a, the side, facing the installation surface b, of the installation cover a212 is located in a notch area of the sliding groove, the installation cover b213 is fixedly installed on the installation surface b, the side, facing the installation surface a, of the installation cover b213 is located in the notch area of the sliding groove, and the side, facing the installation surface b, of the installation cover a212 and the side, facing the.
The transmission mechanism 220 includes a rack 221, a driven gear 222, and a transmission shaft 223, wherein the extending direction of the rack 221 is parallel to the guiding direction of the guide rail 100, and the rack 221 is fixedly mounted on the guide rail 100, specifically, the rack 221 is disposed in the sliding groove, a connecting plate extending toward the guide rail 100 and passing through the limiting groove and located outside the mounting cover is disposed on the surface of the rack 221 facing the guide rail 100, a fastening member is disposed between the connecting plate and the guide rail 100, the connecting plate and the guide rail are fixedly mounted by the fastening member, and the limiting groove enables the mounting housing 211 to move only along the guiding direction of the guide rail 100.
The groove wall of the chute facing the tooth surface of the rack 221 is provided with a mounting groove a, the mounting groove a is parallel to the mounting surface a and is provided with an avoidance hole far away from the groove wall of the guide rail 100, the axial direction of the transmission shaft 223 is perpendicular to the guiding direction of the guide rail 100, the power input end of the transmission shaft 223 penetrates through the avoidance hole and is positioned in the mounting groove a, the power output end of the transmission shaft 223 is connected with the power receiving end of the braking device 400, the transmission shaft 223 can rotate around the self axial direction, the driven gear 222 is fixedly sleeved outside the power input end of the transmission shaft 223 and is meshed with the rack 221, and when the moving object moves, the rack 221 is fixedly mounted on the guide rail 100, so that the driven gear 222 rotates and pulls the transmission shaft 223.
More specifically, since the engaging position of the driven gear 222 and the rack 221 is an inclined plane, when the driven gear 222 rotates, a thrust force pushing the rack 221 away from the driven gear 222 is generated to the rack 221, the thrust makes the side of the rack 221 departing from the tooth surface contact with the groove wall of the sliding groove, and the abrasion between the rack 221 and the sliding groove is large when the moving object moves, in order to solve the problem, a mounting groove b is formed in a groove wall of the sliding groove facing to the side surface of the rack 221 away from the tooth surface, a rack stabilizing member 215 is arranged in the mounting groove b, and specifically, the rack stabilizing member 215 comprises a stabilizing shaft a and a roller a which are arranged on the groove wall of the mounting groove b and are axially parallel to the axial direction of the transmission shaft 223, the roller a is movably sleeved outside the stabilizing shaft a and can axially rotate around the roller a, and the outer circular surface of the roller a is in contact with the side surface of the rack 221 departing from the tooth surface; when the driven gear 222 rotates, the outer circular surface of the roller a contacts with the side surface of the rack 221 departing from the tooth surface, so that the side surface of the rack 221 departing from the tooth surface does not contact with the groove wall of the chute, and meanwhile, the roller a can rotate around the axial direction of the roller a, the roller a is in rolling fit with the rack 221, and abrasion is small.
Preferably, in order to improve the fixing effect of the rack fixing member 215 on the rack 221 and reduce the wear of the rack 221, the rack fixing member 215 is provided with a plurality of mounting grooves b, and the plurality of rack fixing members 215 are uniformly spaced along the guiding direction of the guide rail 100.
More specifically, in the process of moving the moving object and rotating the driven gear 222, since the brake control system is slidably connected to the guide rail 100 through the rack 221 and the guide length of the guide rail 110 is long, the elevator car is shaken during the moving process and easily damages the guide surface of the guide rail 110, to solve the problem, the end surface of the mounting cover facing the guide rail 100 is provided with two guide rail stabilizing members 214, one guide rail stabilizing member 214 is arranged on the mounting cover a, the other guide rail stabilizing member 214 is arranged on the mounting cover b, the guide rail stabilizing member 214 comprises a stabilizing shaft b and a roller b, the stabilizing shaft b and the roller b are arranged on the end surface of the mounting cover a/mounting cover b facing the guide rail 100 and are axially parallel to the axial direction of the transmission shaft 223, and the roller b is movably sleeved outside the stabilizing shaft b and can rotate around the self axial direction, And the excircle of gyro wheel b contacts with guide rail 100, when the moving object moves, because the excircle of gyro wheel b contacts with guide rail 100, make the moving object/lift car combine closely with guide rail 100, reduce the rocking of moving object/lift car, because gyro wheel b can rotate around self axial at the same time, it is the rolling fit between guide rail 100 and the gyro wheel b, the wearing and tearing are less.
Because the power output end of the transmission shaft 223 is connected with the power receiving end of the braking device 400, when the moving speed of the moving object is too fast, the speed sensing device 600 is in a triggering state and the braking device 400 brakes the moving object at the moment, and meanwhile, because the time spent in the braking process is short, the impact on the connection part of the transmission shaft 223 and the power receiving end of the braking device 400 is large, the transmission shaft 223 and the power receiving end of the braking device 400 can be seriously broken, and in order to solve the problem, the buffering mechanism 300 is arranged between the power output end of the transmission shaft 223 and the power receiving end of the braking device 400 and the two are connected through the buffering mechanism 300.
As shown in fig. 6-10 and 14, the buffering mechanism 300 includes a buffering housing 310 and a buffering member 320 disposed in the buffering housing 310, the buffering housing 310 is a cylindrical structure with an open end and a closed end, the open end is provided with a buffering cover in a matching manner, the buffering housing 310 and the transmission shaft 223 are coaxially disposed, the closed end of the buffering housing 310 is further coaxially provided with a through hole, and a power receiving end of the braking device 400 is coaxially fixedly sleeved in the through hole.
The inner cavity bottom of the buffer housing 310 is further provided with a fixing protrusion 311, the fixing protrusion 311 is close to the inner cavity wall of the buffer housing 310, specifically, the fixing protrusion 311 is provided with three fixing protrusions 311 which are distributed at even intervals along the circumferential direction of the buffer housing 310, the fixing protrusion 311 is provided with through holes, the through holes of the three fixing protrusions 311 are located on the same circle concentric with the buffer housing 310, and the inner cavity bottom of the buffer housing 310 is further coaxially provided with a fixing sleeve.
The buffer member 320 includes a buffer frame 321, a loop bar 322, and a buffer spring 323, wherein the loop bar 322 is of an annular structure and is fixedly sleeved in the through hole of the fixing protrusion 311, specifically, the three fixing protrusions 311 are respectively a first fixing protrusion, a second fixing protrusion, and a third fixing protrusion, the loop bar 322 is divided into three sections which are all of an arc structure and respectively are a first sleeving section, a second sleeving section, and a third sleeving section, one end of the first sleeving section is located between the first fixing protrusion and the second fixing protrusion, the other end of the first sleeving section passes through the through hole of the second fixing protrusion and is located between the second fixing protrusion and the third fixing protrusion, one end of the second sleeving section is located between the second fixing protrusion and the third fixing protrusion and is fixedly connected with the first sleeving section, the other end of the second sleeving section passes through the through hole of the third fixing protrusion and is located between the third fixing protrusion and the first fixing protrusion, and is fixedly connected with the second sleeving section, The other end penetrates through the penetrating hole arranged on the first fixing protrusion, is positioned between the first fixing protrusion and the second fixing protrusion and is fixedly connected with the first sleeving section.
Buffer 321 for loop configuration and buffer 321 activity cup joint in the fixed sleeve outside and the outer disc of buffer 321 is provided with cup joints protruding 321a, and is concrete, cup joint protruding 321a be provided with three and cup joint protruding 321a and be even interval distribution along the circumferencial direction of buffer 321, cup joint protruding 321a and be provided with the trepanning and three bell and spigot hole that cup joints protruding 321a is located with the concentric same circle of buffer 321, buffer 321 cup joint in loop bar 322 outside through the trepanning activity, specifically, three are cup jointed protruding 321a respectively and are connect protruding one, cup joint protruding two, cup joint protruding three to cup joint protruding one activity and cup joint in a cup joint section one outside, cup joint protruding two activity and cup joint protruding three outside in a cup joint section two outside, cup joint protruding three activity and cup joint in a cup joint section three outsides.
Buffer spring 323 be ring spring, buffer spring 323 be provided with three and be buffer spring one, buffer spring two, buffer spring three respectively, buffer spring cup joint in cup joint a section outside and cup joint the one end of spring one with cup joint protruding conflict, the other end and fixed protruding conflict, buffer spring cup joint in the section outside and cup joint the one end of spring two with cup joint protruding two conflicts, the other end and fixed protruding two conflicts, buffer spring three cup joint in the section three outside and cup joint the one end of spring three with cup joint protruding three conflicts, the other end and fixed protruding three conflicts.
The power output end of the transmission shaft 223 is coaxially provided with a connecting disc 223a, specifically, the buffer cover is coaxially provided with a jack, the power output end of the transmission shaft 223 penetrates through the jack and is positioned in the buffer shell 310, the connecting disc 223a is positioned in the buffer shell 310, a fixing piece is arranged between the connecting disc 223a and the buffer frame 321 and fixedly connected with the connecting disc 223a and the buffer frame 321 through the fixing piece, and the fixing piece comprises a fixing rod arranged on the buffer frame 321 and a fixing hole arranged on the connecting disc 223a and matched with the fixing rod correspondingly; the buffering process of the buffering mechanism 300 is specifically represented as follows: when the moving object normally operates, the driven gear 222 rotates and rotates the transmission shaft 223, the transmission shaft 223 rotates and rotates the power receiving end of the braking device 400 through the connecting disc 223a, the buffer frame 321, the buffer spring 323 and the buffer shell 310, and at this time, the speed sensing device 600 is in an unfired state and the braking device 400 does not affect the operation of the moving object; when the moving speed of the moving object is too fast, the speed sensing device 600 is in a trigger state and the braking device 400 brakes the moving object at the moment, in the braking process, the speed of the power receiving end of the braking device 400 is zero, and meanwhile, the speed of the transmission shaft 223 is high.
Because the buffering mechanism 300 is used for providing a buffering effect between the transmission shaft 223 and the power receiving end of the braking device 400, besides, the buffering mechanism 300 is also used for speed transmission between the transmission shaft 223 and the braking device 400, and meanwhile, because the buffering shell is suspended between the transmission shaft 223 and the braking device 400, the speed transmission between the transmission shaft 223 and the braking device 400 is affected, in order to avoid this situation, the buffering mechanism 300 further comprises a fixed shell, the fixed shell is of a cylinder structure with one open end and the other closed end, the fixed shell and the transmission shaft 223 are coaxially arranged, the closed end is coaxially provided with a through hole, the buffering shell 310 is movably arranged in the fixed shell through a bearing, the buffering shell 310 can axially rotate around itself, the open end of the fixed shell is fixedly arranged on the installation shell 211, and the power output end of the transmission shaft 223 is positioned in the fixed shell and connected with the buffering frame 321, And the power receiving end of the brake 400 passes through the through-hole and is coupled with the buffer housing 310.
As shown in fig. 10 to 21, the braking device 400 includes a braking mechanism, a hydraulic pipe network 430 and a control valve 440, wherein a power receiving end of the braking mechanism penetrates through the through hole and is connected to the buffer housing 310, and is used for providing a motion resistance for the moving object, the hydraulic pipe network 430 is used for connecting the braking mechanism and the control valve 440, the control valve 440 is used for controlling the magnitude of the motion resistance provided by the braking mechanism to the moving object, when the moving object normally operates, the motion resistance provided by the braking mechanism does not affect the operation of the moving object, and when the speed of the moving object is too high, the motion resistance provided by the braking mechanism stops the moving object.
As shown in fig. 10 to 16, the braking mechanism includes a braking housing, a hydraulic cylinder 410, and a linkage mechanism 420, the braking housing is a cylindrical structure with an open end and a closed end, and a braking cover is installed at the open end in a matching manner, a bearing hole a is coaxially formed in the closed end of the braking housing, a bearing hole b is coaxially formed in the end surface of the braking cover, and the closed end of the braking housing is coaxially and fixedly installed at the closed end of the fixed housing.
The hydraulic cylinder 410 comprises a hydraulic cylinder body 411, a piston 413 and a piston rod 414, wherein the hydraulic cylinder body 411 is of a cylinder structure with two open ends, the hydraulic cylinder body 411 is fixedly arranged on a brake shell, specifically, a fixing sleeve communicated with an inner cavity of the brake shell is arranged on the outer circular surface of the brake shell, the axial direction of the hydraulic cylinder body 411 is perpendicular to the axial direction of the brake shell, the hydraulic cylinder body 411 is fixedly arranged in the fixing sleeve, one open end of the hydraulic cylinder body 411 is positioned in the brake shell, the other open end of the hydraulic cylinder body is positioned outside and is matched with the hydraulic cylinder cover 412, the hydraulic cylinder cover 412 is provided with an interface 412a communicated with the inner cavity of the hydraulic cylinder body 411, the piston 413 is arranged in the hydraulic cylinder body 411, the piston 413 and the hydraulic cylinder body form a sealed sliding fit, one.
The four hydraulic cylinders 410 are arranged and evenly distributed at intervals along the circumferential direction of the brake shell, the four hydraulic cylinders 410 are respectively a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder and a fourth hydraulic cylinder, the first hydraulic cylinder and the second hydraulic cylinder are symmetrically distributed about the axis of the transmission shaft 223, the third hydraulic cylinder and the fourth hydraulic cylinder are symmetrically distributed about the axis of the transmission shaft 223, namely, a piston rod 414 of the first hydraulic cylinder and a piston rod 414 of the second hydraulic cylinder are located on the same straight line, and a piston rod 414 of the third hydraulic cylinder and a piston rod 414 of the fourth hydraulic cylinder are located on the same straight line.
The linkage mechanism 420 is arranged in the brake shell, the linkage mechanism 420 comprises a linkage shaft I421, a rotary table I422, a middle shaft I, a middle shaft II, a rotary table II 426 and a linkage shaft II 427, the linkage shaft I421, the rotary table I422, the middle shaft I, the middle shaft II, the rotary table II 426 and the linkage shaft II 427 are sequentially arranged along the direction of the closed end of the brake shell pointing to the open end of the brake shell, the power input end of the linkage shaft I421 passes through the bearing hole a and is positioned in the fixed shell and is fixedly sleeved in the sleeve hole arranged at the closed end of the buffer shell 310, the rotary table I422 is coaxially and fixedly connected with the power output end of the linkage shaft I421, the axial directions of the middle shaft I and the middle shaft II are both parallel to the axial direction of the transmission shaft 223, the outer part of the middle shaft I is movably sleeved with the connecting sleeve I, the outer part of the middle shaft II is movably sleeved with the connecting sleeve II, the power input end of the second linkage shaft 427 is positioned in the brake housing, the power output end of the second linkage shaft 427 passes through the bearing hole b and is positioned outside the brake housing and connected with the speed sensing device 600, and the second turntable 426 is coaxially and fixedly sleeved on the power input end of the second linkage shaft 427.
The drive end of the piston rod 414 of the first hydraulic cylinder and the drive end of the piston rod 414 of the second hydraulic cylinder are movably connected with the first connecting sleeve, specifically, the drive end of the piston rod 414 of the first hydraulic cylinder and the drive end of the piston rod 414 of the second hydraulic cylinder are both in an arc-shaped groove structure, the drive end of the piston rod 414 of the first hydraulic cylinder and the drive end of the piston rod 414 of the second hydraulic cylinder are spliced and sleeved on the first connecting sleeve in a sliding manner, the piston rod 414 of the third hydraulic cylinder and the piston rod 414 of the fourth hydraulic cylinder are movably connected with the second connecting sleeve, specifically, the drive end of the piston rod 414 of the third hydraulic cylinder and the drive end of the piston rod 414 of the fourth hydraulic cylinder are both in an arc-shaped groove structure, and the drive end of the piston rod 414 of the third hydraulic cylinder and the drive end of the.
A linkage plate I423 is arranged between the first rotary table 422 and the first intermediate shaft, one end of the linkage plate I423 is hinged with the first rotary table 422, the hinged position deviates from the circle center of the first rotary table 422, the core line of the hinge shaft is parallel to the axial direction of the first linkage shaft 421, the other end of the linkage plate I423 is hinged with the power input end of the first intermediate shaft, the core line of the hinge shaft is parallel to the axial direction of the first linkage shaft 421, the first linkage shaft 421 rotates and pulls the first rotary table 422 to synchronously rotate, the first rotary table 422 rotates and drives the first linkage plate 423 to deflect, the first linkage plate 423 deflects and drives the first intermediate shaft to move, the first intermediate shaft moves by two parts and respectively rotates around the axial direction of the first, the first intermediate shaft moves along the extension direction of the piston rod 414 of the first hydraulic cylinder and drives the piston rods 414 of the first and second hydraulic cylinders to move synchronously.
A linkage plate II 424 is arranged between the first middle shaft and the second middle shaft, one end of the linkage plate II 424 is hinged with the power output end of the first middle shaft, a hinge shaft core line is parallel to the axial direction of the linkage shaft I421, the other end of the linkage plate II 424 is hinged with the power input end of the second middle shaft, the hinge shaft core line is parallel to the axial direction of the linkage shaft I421, the first middle shaft moves and drives the second middle shaft to move through the linkage plate II 424, the movement of the second middle shaft consists of two parts which respectively rotate around the axial direction of the second middle shaft and reciprocate along the extending direction of the piston rod 414 of the hydraulic cylinder III, and the second middle shaft moves along the extending direction of the piston rod 414 of the hydraulic cylinder III and drives the piston rod 414 of the hydraulic cylinder.
A linkage plate III 425 is arranged between the intermediate shaft II and the rotary table II 426, one end of the linkage plate III 425 is hinged with the power output end of the intermediate shaft II, a hinge shaft core line is parallel to the axial direction of the linkage shaft I421, the other end of the linkage plate II is hinged with the rotary table II 426, the hinged position deviates from the circle center of the rotary table II 426, the hinge shaft core line is parallel to the axial direction of the linkage shaft I421, the intermediate shaft II moves and drives the linkage plate III 425 to deflect, the linkage plate III 425 deflects and drives the rotary table II 426 to rotate around the axial direction of the linkage plate II, and the rotary table II 426 rotates and pulls the linkage shaft II 427 to synchronously rotate.
As shown in fig. 20 to 21, the control valve 440 includes a first control valve, a second control valve and a mounting plate 443, the first control valve is used for controlling the unit flow rate of the hydraulic oil between the first hydraulic cylinder and the second hydraulic cylinder, the second control valve is used for controlling the unit flow rate of the hydraulic oil between the third hydraulic cylinder and the fourth hydraulic cylinder, the first control valve and the second control valve are both fixedly mounted on the mounting plate 443, the shape and structure of the first control valve and the second control valve are identical, and the first control valve and the second control valve are integrated.
The first control valve and the second control valve both comprise control valve bodies, each control valve body comprises a support shell 441 and a control valve core 442, each support shell 441 is of a rectangular cylinder structure with one open end and the other closed end, the open end of each support shell 441 is provided with a valve cover in a matched manner, a sliding hole communicated with the inner cavity of the support shell 441 is formed in the valve cover, the closed end of each support shell 441 is fixedly connected with an installation plate 443, the support shell 441 is further provided with a first connecting nozzle 441a and a second connecting nozzle 441b which are communicated with the inner cavity of the support shell, the first connecting nozzle 441a and the second connecting nozzle 441b are respectively arranged on different side surfaces of the support shell 441, and the control valve core 442 is arranged in the inner cavity of the support shell 441.
The control valve spool 442 includes a valve stem 442a, a sealing plug a442b near the valve cover, a sealing plug b442c far from the valve cover, the sealing plugs a442b and the sealing plug b442c are in sealing sliding fit with the supporting shell 441, and the sealing plug a442b and the sealing plug b442c are connected through a connecting rod, the first connecting mouth 441a and the second connecting mouth 441b are positioned between the sealing plug a442b and the sealing plug b442c, the valve rod 442a has one end connected to the sealing plug a442b and the other end passing through the sliding hole and connected to the speed sensor 600, and when the speed sensor 600 is in an unfired state, the first connecting nozzle 441a and the second connecting nozzle 441b are connected to each other, and when the speed sensor 600 is in the trigger state, the sealing plug a442 b/the sealing plug b442c seals the first connecting nozzle 441a and the second connecting nozzle 441b, and the unit flow rate between the first connecting nozzle 441a and the second connecting nozzle 441b is reduced to zero.
As shown in fig. 10 to 11, the hydraulic pipe network 430 includes a first hydraulic pipe, a second hydraulic pipe, a third hydraulic pipe, and a fourth hydraulic pipe, one end of the first hydraulic pipe is connected to the first interface 412a of the first hydraulic cylinder, the other end of the first hydraulic pipe is connected to the first connection nozzle 441a of the first control valve, one end of the second hydraulic pipe is connected to the second interface 412a of the second hydraulic cylinder, the other end of the second hydraulic pipe is connected to the second connection nozzle 441b of the first control valve, one end of the third hydraulic pipe is connected to the third interface 412a of the third hydraulic cylinder, the other end of the third hydraulic pipe is connected to the first connection nozzle 441a of the second control valve, one end of the fourth hydraulic pipe is connected to the fourth interface 412a of the fourth hydraulic cylinder, and the other end of the fourth hydraulic pipe is connected to the second; the operation of the braking device 400 is represented as follows: when the moving object moves, because the rack 221 is fixedly installed on the guide rail 100, the driven gear 222 rotates and pulls the transmission shaft 223 to synchronously rotate, when the moving object normally operates, the speed sensing device 600 is in an unfired state, the first connecting nozzle 441a and the second connecting nozzle 441b are mutually communicated, the transmission shaft 223 rotates and enables the first connecting shaft 421 to rotate through the buffer mechanism 300, the first connecting shaft 421 rotates and drives the first intermediate shaft to move through the first rotating disc 422 and the first connecting plate 423, the first intermediate shaft moves by two parts and respectively rotates around the axial direction of the first intermediate shaft and reciprocates along the extending direction of the piston rod 414 of the first hydraulic cylinder, the first intermediate shaft reciprocates along the extending direction of the piston rod 414 of the first hydraulic cylinder and drives the piston rods 414 of the first hydraulic cylinder and the second hydraulic cylinder to synchronously move, specifically, when the first intermediate shaft moves close to the first hydraulic cylinder, the piston rod 414 of the first hydraulic cylinder moves close to the hydraulic cylinder cover 412 of, the piston rod 414 of the second hydraulic cylinder moves away from the hydraulic cylinder cover 412 of the second hydraulic cylinder, at the moment, the hydraulic oil in the first hydraulic cylinder flows into the second hydraulic cylinder through the first hydraulic pipe, the first control valve and the second hydraulic pipe, when the first intermediate shaft moves close to the second hydraulic cylinder, the piston rod 414 of the first hydraulic cylinder moves away from the hydraulic cylinder cover 412 of the first hydraulic cylinder, the piston rod 414 of the second hydraulic cylinder moves close to the hydraulic cylinder cover 412 of the second hydraulic cylinder, at the moment, the hydraulic oil in the second hydraulic cylinder flows into the first hydraulic cylinder through the second hydraulic pipe, the first control valve and the first hydraulic pipe, the first intermediate shaft moves and drives the second intermediate shaft to move through the second linkage plate 424, the second intermediate shaft moves and consists of two parts and rotates around the self axial direction and reciprocates along the extending direction of the piston rod 414 of the third hydraulic cylinder, and reciprocates along the extending direction of the piston rod 414 of the third hydraulic, The piston rod 414 of the hydraulic cylinder IV synchronously moves, the middle shaft II enables the hydraulic movement of the hydraulic cylinder III and the hydraulic cylinder IV to be consistent with the hydraulic movement of the hydraulic cylinder I and the hydraulic cylinder II through the middle shaft I, and in the process, because the speed of the moving object is low, and simultaneously because the connecting nozzle I441 a and the connecting nozzle II 441b are communicated with each other, the flow of hydraulic oil among the hydraulic pipe I, the control valve I and the hydraulic pipe II and the flow among the hydraulic cylinder III, the control valve and the hydraulic pipe IV do not influence the operation of the moving object; when the speed of the moving object is too fast, and the speed sensing device 600 is in a triggering state, the sealing plug a442 b/the sealing plug b442c plugs the first connecting nozzle 441a and the second connecting nozzle 441b, the unit flow between the first connecting nozzle 441a and the second connecting nozzle 441b is reduced until the unit flow is zero, so that the rotating speed of the first linkage shaft 421 is zero, and further the rotating speed of the transmission shaft 223 is zero, so that the moving object is stopped, and meanwhile, in the stopping process, because the transmission shaft 223 is connected with the first linkage shaft 421 through the buffer mechanism 300, the impact between the transmission shaft 223 and the first linkage shaft 421 is small.
More optimally, as the hydraulic cylinder 410 can generate a large amount of heat in the hydraulic movement process, the heat can generate adverse effects on the hydraulic cylinder body 411 of the hydraulic cylinder 410, and can seriously cause the hydraulic cylinder body 411 to generate thermal deformation, in order to solve the problem, the radiating fins are sleeved outside the fixing sleeve which is arranged on the outer circular surface of the brake shell and communicated with the inner cavity of the brake shell, and the heat of the hydraulic cylinder body 411 is transmitted to the radiating fins through the fixing sleeve and is radiated through the radiating fins.
Since the power output end of the second coupling shaft 427 passes through the bearing hole b and is located outside the brake housing and connected with the speed sensing device 600, so that the speed of the moving object is transmitted to the speed sensing means 600 through the braking means 400, meanwhile, the braking device 400 controls the unit flow of the hydraulic oil among the hydraulic cylinder 410, the hydraulic pipe network 430 and the control valve 440 to stop the moving object, when the speed of the moving object is too fast, the speed of the moving object transmitted to the speed sensing device 600 through the braking device 400 is greatly reduced compared with the speed of the moving object itself, therefore, the sensing accuracy of the speed sensing device 600 is affected, and in order to solve the problem, the speed increasing device 500 is arranged between the speed sensing device 600 and the second coupling shaft 427, the speed increasing device 500 is used for increasing the speed transmitted from the braking device 400 to the speed sensing device 600, and the speed increasing device 500 does not affect the operation of the braking device 400.
As shown in fig. 17-19, the above-mentioned speed increasing device 500 includes a speed increasing housing, a speed increasing mechanism disposed in the speed increasing housing, the speed increasing shell is of a cylinder structure with openings at two ends, the speed increasing shell and the brake shell are coaxially arranged, one opening end of the speed increasing shell is coaxially and fixedly arranged on a brake cover arranged at the opening end of the brake shell, the other opening end of the speed increasing shell is fixedly arranged on the mounting plate 443 of the control valve 440, the supporting shell 441 is provided with a connecting hole which is axially parallel to the axial direction of the transmission shaft 223 and communicated with the inner cavity of the speed-increasing shell, the power output end of the second linkage shaft 427 passes through the bearing hole b, is positioned in the speed increasing shell and is connected with the power input end of the speed increasing mechanism, the power receiving end of the speed induction device 600 penetrates through the connecting hole, is positioned in the speed increasing shell and is connected with the power output end of the speed increasing mechanism.
The speed increasing mechanism comprises an inner gear ring 510, a planet gear 520, a sun gear 530 and a planet carrier 540, the planet carrier 540 comprises two parts which are a planet shaft 541 and a planet disk 542 respectively, the power input end of the planet shaft 541 is coaxially connected with the power output end of a linkage shaft II 427, the planet disk 542 is coaxially and fixedly connected with the power output end of the planet shaft 541, and a gear shaft 543 is further arranged on the end face, far away from the planet shaft 541, of the planet disk 542.
The inner gear ring 510 is fixedly sleeved in the speed increasing shell, a rotating hole coaxial with the planet shaft 541 is formed in the center of the inner gear ring 510, the power receiving end of the speed sensing device 600 is movably sleeved in the rotating hole and can axially rotate around the speed sensing device, the planet gears 520 are movably sleeved outside the gear shafts 543 and are meshed with the inner gear ring 510, preferably, three planet gears 520 are arranged, the gear shafts 543 are correspondingly provided with three gear shafts 543 and are uniformly distributed at intervals along the circumferential direction of the planet disk 542, and the sun gears 530 are fixedly sleeved on the power receiving end of the speed sensing device 600 and are meshed with the planet gears 520; the speed increasing process of the speed increasing device 500 is specifically as follows: the second coupling shaft 427 rotates and pulls the planet gears to rotate through the planet carrier 540, and because the inner gear ring 510 is fixedly sleeved in the speed increasing housing, the planet gears 520 roll along the circumferential direction of the inner gear ring 510, and then the sun gear 530 is pulled to rotate around the self axial direction, the sun gear 530 rotates and pulls the power receiving end of the speed sensing device 600 to synchronously rotate, in the process, because the time required for the planet gears 520 to roll for one circle along the circumferential direction of the inner gear ring 510 is far longer than the time required for the sun gear 530 to rotate for one circle, namely the rotating speed of the sun gear 530 is greater than that of the planet carrier 540, the speed transmitted by the braking device 400 to the speed sensing device 600 is increased, and the running of the braking device 400.
As shown in fig. 22-27, the speed sensing device 600 includes a sensing shaft 610, a fixing member 620, a sliding member 630, and a pulling member 640, wherein the axial direction of the sensing shaft 610 is parallel to the axial direction of the transmission shaft 223, the power receiving end of the sensing shaft 610 passes through the connecting hole of the supporting housing 441 and is located in the speed increasing housing, and is movably sleeved in the rotating hole at the center of the inner gear 510 and can rotate around itself, and the sun gear 530 is fixedly sleeved on the power receiving end of the sensing shaft 610.
The fixing member 620 is disposed at the power output end of the induction shaft 610, and specifically, the fixing member 620 includes a fixing sleeve 621 having an annular structure, the fixing sleeve 621 is fixedly sleeved at the power output end of the induction shaft 610, and a hinge protrusion a622 is disposed on an outer circumferential surface of the fixing sleeve 621.
The sliding member 630 is disposed between the power output end of the sensing shaft 610 and the control valve 440, and specifically, the sliding member 630 includes a sliding sleeve in an annular structure, the sliding sleeve is movably sleeved outside the sensing shaft 610, a hinge protrusion b is disposed on an outer circumferential surface of the sliding sleeve, and the sliding sleeve can rotate around the axial direction of the sliding sleeve and can move along the axial direction of the sensing shaft 610.
The pulling member 640 is disposed between the sliding member 630 and the control valve 440, specifically, the pulling member 640 includes a pull rod 641 and a pulling sleeve 642, the pull rod 641 is in an annular structure and movably sleeved outside the sensing shaft 610, one end of the pull rod 641 is fixedly connected to the sliding sleeve, the other end of the pull rod 641 is a pulling end and is provided with an external step a, the pulling sleeve 642 is in an annular structure, the pulling sleeve 642 is provided with an internal step toward the annular end of the sliding member 630, the pulling sleeve 642 is sleeved outside the pull rod 641 and is abutted against the internal step a, a sliding fit is formed between an inner cavity of the pulling sleeve 642 and an outer circular surface of the pull rod 641, the sliding sleeve moves along the axial direction of the sensing shaft 610 and pulls the pulling sleeve 642 to move synchronously through the pull rod 641, a connecting protrusion a and a connecting protrusion b are further disposed on an outer circular surface of the pulling sleeve 642, a valve stem 442a of the first control valve is fixedly connected to the connecting protrusion a, The valve rod 442a of the second control valve is fixedly connected with the connecting protrusion b, the pulling sleeve 642 moves and pulls the valve rod 442a of the first control valve/the second control valve to synchronously move, so that the unit flow between the first connecting nozzle 441a and the second connecting nozzle 441b of the first control valve/the second control valve is controlled.
As shown in fig. 22 to 23, the speed sensing apparatus 600 further includes a speed sensing mechanism, the speed sensing mechanism includes an extension member 650 and a connection rod 660, the extension member 650 includes an extension rod 651, one end of the extension rod 651 is hinged to a hinge protrusion a622 disposed on an outer circumferential surface of the fixing sleeve 621, and a hinge axis line is perpendicular to an axial direction of the sensing shaft 610, the other end is provided with a load body 652, one end of the connection rod 660 is hinged to a hinge protrusion b disposed on an outer circumferential surface of the sliding sleeve 621, and a hinge axis line is perpendicular to the axial direction of the sensing shaft 610, the other end is hinged to the extension rod 651, and a hinge axis line is perpendicular to the axial direction of the sensing shaft 610.
Hinge grooves are formed in the hinged part of the extension rod 651 and the hinge protrusion a, the hinged part of the connecting rod 660 and the hinge protrusion b and the hinged part of the connecting rod 660 and the extension rod 651; the working process of the speed sensing device 600 is specifically as follows: the moving object runs and makes the induction shaft 610 rotate through the buffer mechanism 300, the brake device 400 and the speed increasing device 500, when the moving object runs normally, the rotating track of the stretching rod 651 is not changed because the speed of the moving object is low at this time; when the moving object runs at an excessively high speed, the sensing shaft 610 rotates at a high speed and drives the stretching rod 651 and the load body 652 to rotate at a high speed synchronously, and when the load body 652 rotates at a high speed, because the stretching rod 651 rotates around a hinge shaft of the stretching rod 651 and the hinge protrusion a under the action of inertia and rotates along the axial direction of the hinge shaft and in a direction away from the sliding member 630, during the rotation of the stretching rod 651, the stretching rod 651 pulls the sliding member 630 to move close to the fixed member 620 along the axial direction of the sensing shaft 610 through the connecting rod 660, the sliding member 630 moves and pulls the valve rod 442a of the control valve I/II through the pull rod 641 and the pulling sleeve 642 to move synchronously, so that the unit flow between the connecting nozzle I441 a and the connecting nozzle II 441b of the control valve I/II is reduced to zero, and the moving object is stopped.
More specifically, the speed sensing mechanisms are three and are uniformly distributed at intervals along the circumferential direction of the sensing shaft 610; speed sensing mechanism is provided with three and makes speed sensing device 600 during operation more stable, if speed sensing mechanism is provided with when one, also can realize speed sensing device 600's normal work, nevertheless because the skew central line of focus, produces easily and rocks.
Preferably, the speed sensing device 600 is further provided with a protective casing for protecting the sensing shaft 610, the fixing member 620, the sliding member 630, the pulling member 640 and the speed sensing mechanism, the protective casing is of a sleeve structure with one open end and the other closed end, the open end of the protective casing is provided with a protective cover in a matching manner, the closed end of the protective casing is fixedly arranged on the supporting shell 441 and is provided with a supporting hole a which is coaxially arranged with a connecting hole arranged on the supporting shell 441, the protective cover is coaxially provided with a supporting hole b which is coaxially arranged with the supporting hole a, the sensing shaft 610, the fixed member 620, the sliding member 630, the pulling member 640 and the speed sensing mechanism are arranged in the protective shell, and the power receiving end of the induction shaft 610 penetrates through the supporting hole a and the connecting hole and is positioned in the speed increasing shell, and the power output end of the induction shaft 610 is movably sleeved in the supporting hole b.
Because the speed sensing device 600 is triggered by the speed, the inching brake phenomenon occurs in the process of braking the moving object by the braking device 400: when the speed of the moving object is too fast, the speed sensing device 600 is in a triggered state and the braking device 400 is enabled to reduce the speed of the moving object, when the speed of the moving object is reduced to a normal operation speed, the speed sensing device 600 is in an un-triggered state, the braking device 400 stops braking, and simultaneously the speed of the moving object continues to rise and enables the speed sensing device 600 to be in a triggered state again and the braking device 400 is enabled to reduce the speed of the moving object, and the steps are repeated; to solve this problem, the speed sensing device 600 further includes a self-locking mechanism 670, and the self-locking mechanism 670 is used to prevent the speed sensing device 600 from being automatically switched to an unactuated state.
As shown in fig. 25 to 27, the sliding sleeve is divided into two parts along the axial direction of the sensing shaft 610, and the two parts are a driving section 631 adjacent to the pulling member 640 and a mounting section 632 adjacent to the fixing member 620, the driving section 631 is connected to the pulling member 640, and the self-locking mechanism 670 is disposed on the outer circumferential surface of the mounting section 632.
The outer circular surface of the mounting section 632 is provided with a mounting hole communicated with the annular inner cavity thereof, and the part of the sensing shaft 610 between the sliding member 630 and the fixing member 620 is provided with a self-locking groove 611 in an annular structure.
The self-locking mechanism 670 comprises a self-locking shell 671 and a self-locking member arranged in the self-locking shell 671, the self-locking shell 671 is of a cylindrical structure with an open end and a closed end, an extending hole is coaxially formed in the closed end, the open end of the self-locking shell 670 is fixedly arranged on the outer circular surface of the mounting section 632, and the mounting hole is communicated with the inner cavity of the self-locking shell 671.
The self-locking member comprises a self-locking rod 672 and a self-locking spring 673, one end of the self-locking rod 672 is a free end and is positioned outside the self-locking shell 671, the other end of the self-locking rod 672 is a self-locking end and passes through an extending hole formed in the closed end of the self-locking shell 671, an inner cavity of the self-locking shell 671 and a mounting hole formed in the outer circumferential surface of the mounting section 632 and is contacted with the outer circumferential surface of the induction shaft 610, an external step b674 is arranged on the part of the self-locking rod 672 positioned inside the self-locking shell 671, the self-locking spring 673 is sleeved outside the self-locking rod 672, the initial state of the self-locking spring 673 is a compression state, one end of the self-locking spring 673 is abutted against the cavity bottom of the inner cavity of the self-locking shell 671, the other end of; the working process of the self-locking mechanism 670 is as follows: when the moving object is stopped, the self-locking end of the self-locking bar 672 moves to the notch of the self-locking groove 611, at the moment, the self-locking end of the self-locking bar 672 is positioned in the self-locking groove 611 through the elastic force of the self-locking spring 673 via the external step b674, the speed sensing device 600 cannot be switched to the non-triggered state, and the point braking phenomenon cannot occur in the process of stopping the moving object by the braking device 400; after the moving object stops, the worker manually pulls the free end of the self-locking lever 672, and simultaneously makes the sliding member 630 axially move away from the fixing member 620 along the sensing shaft 610 until the self-locking end of the self-locking lever 672 is separated from the area of the notch of the self-locking groove 611, and the speed sensing device 600 returns to the initial state, i.e., the non-triggered state.
A method for preventing an elevator from falling comprises the following steps:
s1: when the elevator normally runs, the running speed of the elevator is transmitted to the speed sensing device 600 through the connecting device 200 and the braking device 400, and at the moment, the speed sensing device 600 is in an unfired state, so that the running of the elevator is not affected;
the connecting device 200 comprises a connecting mechanism 210 and a transmission mechanism 220, wherein the connecting mechanism 210 comprises an installation shell 211 and an installation cover which are of a cuboid structure, the surface of the installation shell 211 facing the guide rail 100 is provided with a sliding groove with a guide direction parallel to the guide rail 100, the surface of the installation shell 211 facing the guide rail 100 is divided into two parts by the sliding groove and is respectively provided with an installation surface a and an installation surface b, the installation cover comprises an installation cover a212 and an installation cover b213, the installation cover a212 is fixedly installed on the installation surface a, the side surface of the installation cover a212 facing the installation surface b is positioned in a notch area of the sliding groove, the installation cover b213 is fixedly installed on the installation surface b, the side surface of the installation cover b213 facing the installation surface a is positioned in the notch area of the sliding groove, the side surface of the installation cover a212 facing the installation surface b and the side surface of the installation cover b213 facing the installation surface a jointly form, Driven gear 222 and transmission shaft 223, the extending direction of rack 221 is parallel to the guiding direction of guide rail 100 and rack 221 is fixedly installed on guide rail 100, specifically, rack 221 is installed in a sliding groove, the surface of rack 221 facing guide rail 100 is provided with a connecting plate which extends towards guide rail 100, passes through a limiting groove and is located outside the installation cover, a fastener is arranged between connecting plate and guide rail 100, and the connecting plate and guide rail are fixedly installed through the fastener, and the limiting groove enables installation shell 211 to move only along the guiding direction of guide rail 100, the sliding groove is provided with an installation groove a facing the tooth surface of rack 221, the installation groove a is parallel to installation surface a and is provided with an avoidance hole far away from the groove wall of guide rail 100, the axial direction of transmission shaft 223 is perpendicular to the guiding direction of guide rail 100, the power input end of transmission shaft 223 passes through the avoidance hole and is located in installation groove a, The power output end of the transmission shaft 223 is positioned outside the mounting shell 211, the transmission shaft 223 can rotate around the self axial direction, the driven gear 222 is fixedly sleeved outside the power input end of the transmission shaft 223 and the driven gear 222 is meshed with the rack 221, a buffer mechanism 300 is arranged between the power output end of the transmission shaft 223 and the power receiving end of the brake device 400, the power output end of the transmission shaft 223 is coaxially connected with the power input end of the buffer mechanism 300, the power output end of the buffer mechanism 300 is coaxially connected with the power receiving end of the brake device 400, a speed increasing device 500 is arranged between the power output end of the brake device 400 and the speed sensing device 600, the power output end of the brake device 400 is coaxially connected with the power input end of the speed increasing device 500, and the power output end of the speed increasing device 500 is coaxially connected with the power receiving end of the; when the elevator runs, the rack 221 is fixedly mounted on the guide rail 100, so that the driven gear 222 rotates and pulls the transmission shaft 223 to synchronously rotate, the transmission shaft 223 rotates and transmits the running speed of the elevator to the speed sensing device 600 through the buffer mechanism 300, the braking device 400 and the speed increasing device 500, and at the moment, the elevator runs normally, namely the running speed of the elevator is low, the speed sensing device 600 is in an unfired state, and the braking device 400 does not influence the running of the elevator in the process;
s2: when the elevator crashes, that is, the elevator runs at too high speed, the speed sensing device 600 is in a trigger state, and at the moment, the braking device 400 enables the running speed of the elevator to be reduced; the braking device 400 comprises a braking mechanism, a hydraulic pipe network 430 and a control valve 440, wherein a power receiving end of the braking mechanism is coaxially connected with a power output end of the buffer mechanism 300 and used for providing motion resistance for the elevator, the hydraulic pipe network 430 is used for connecting the braking mechanism with the control valve 440, the control valve 440 is used for controlling the motion resistance provided by the braking mechanism for the elevator, the speed sensing device 600 is connected with a control valve core 442 arranged on the control valve 440, the power receiving end of the speed sensing device 600 is coaxially connected with a power output end of the speed increasing device 500, and a power input end of the speed increasing device 500 is coaxially connected with a power output end of the braking mechanism; when the running speed of the elevator is too high, the speed sensing device 600 is in a trigger state, and the motion resistance provided by the braking mechanism to the elevator is increased through the control valve 440 and the hydraulic cylinder net 430, so that the running speed of the elevator is reduced;
s3: the speed sensing device 600 further comprises a self-locking mechanism 670 for controlling the speed sensing device 600 to be switched between a triggered state and an un-triggered state, when the running speed of the elevator is reduced to zero, namely the elevator is stopped, the self-locking mechanism 670 enables the speed sensing device 600 not to be switched to the un-triggered state, the brake device 400 does not have a snubbing phenomenon in the process of stopping the elevator, and meanwhile, in the stopping process, as the buffer mechanism 300 is arranged between the power output end of the transmission shaft 223 and the power receiving end of the brake device 400, a buffer process is formed in the process of reducing the speeds of the elevator and the transmission shaft 223 to zero, and the connection position of the transmission shaft 223 and the power receiving end of the brake device 400 is enabled to be less impacted.

Claims (7)

1. The elevator braking system based on hydraulic cylinder-triggered buffer braking is characterized by comprising a connecting device, a braking device and a speed sensing device, wherein the connecting device is connected with a guide rail in a sliding manner, a power receiving end of the braking device is connected with the connecting device, a power output end of the braking device is connected with the speed sensing device, the connecting device transmits the movement speed of a moving object to the speed sensing device through the braking device, the movement state of the speed sensing device is divided into an unfired state and a triggered state, when the moving object normally operates, the speed sensing device is in the unfired state, the braking device does not influence the operation of the moving object, and when the movement speed of the moving object is too high, the speed sensing device is in the triggered state and the braking device brakes the moving object at the moment;
a buffer mechanism is arranged between the power output end of the connecting device and the power receiving end of the braking device, and the power output end of the connecting device and the power receiving end of the braking device are connected and driven through the buffer mechanism;
buffer gear include the buffering shell, set up the buffering component in the buffering shell, the buffering shell be one end opening, other end confined tubular structure, and the open end matches and installs the buffering lid to the buffering shell is arranged with connecting device's power take off coaxial, the blind end of buffering shell is still coaxial and has been seted up the through-hole, arresting gear's coaxial fixed cover of power receiving terminal connect in the through-hole.
2. The elevator braking system based on hydraulic cylinder-triggered buffer braking according to claim 1, wherein the inner cavity bottom of the buffer housing is further provided with fixing protrusions which are close to the inner cavity wall of the buffer housing, the fixing protrusions are provided with three fixing protrusions which are uniformly distributed at intervals along the circumferential direction of the buffer housing, the fixing protrusions are provided with through holes, the through holes of the three fixing protrusions are located on the same circle concentric with the buffer housing, and the inner cavity bottom of the buffer housing is further coaxially provided with a fixing sleeve;
the buffer component comprises a buffer frame, a loop bar and a buffer spring, wherein the loop bar is of an annular structure and is fixedly sleeved in a penetrating hole arranged in a fixed bulge, the three fixed bulges are respectively a first fixed bulge, a second fixed bulge and a third fixed bulge, the loop bar is divided into three sections which are all of arc structures and respectively are a first sleeved section, a second sleeved section and a third sleeved section, one end of the first sleeved section is positioned between the first fixed bulge and the second fixed bulge, the other end of the first sleeved section penetrates through the penetrating hole arranged in the second fixed bulge and is positioned between the second fixed bulge and the third fixed bulge, one end of the second sleeved section is positioned between the second fixed bulge and the third fixed bulge and is fixedly connected with the first sleeved section, the other end of the second sleeved section penetrates through the penetrating hole arranged in the third fixed bulge and is positioned between the third fixed bulge and the first fixed bulge, one end of the third sleeved section is positioned between the third fixed bulge and the second sleeved section, The other end of the connecting rod penetrates through a penetrating hole formed in the first fixing protrusion, is positioned between the first fixing protrusion and the second fixing protrusion and is fixedly connected with the first sleeving section;
the buffer frame is of an annular structure, the buffer frame is movably sleeved outside the fixed sleeve, the outer circular surface of the buffer frame is provided with three sleeving bulges, the three sleeving bulges are uniformly distributed at intervals along the circumferential direction of the buffer frame, the sleeving bulges are provided with trepanning holes, the trepanning holes of the three sleeving bulges are positioned on the same circle concentric with the buffer frame, the buffer frame is movably sleeved outside the loop bar through the trepanning holes, the three sleeving bulges are respectively sleeved with a bulge I, a sleeving bulge II and a sleeving bulge III, the sleeving bulge I is movably sleeved outside the sleeving section I, the sleeving bulge II is movably sleeved outside the sleeving section II, and the sleeving bulge III is movably sleeved outside the sleeving section III;
the buffer spring is an annular spring, the buffer spring is provided with three buffer springs I, two buffer springs II and three buffer springs III, the buffer spring is sleeved outside the first sleeving section, one end of the first sleeving spring is abutted against the first sleeving protrusion, the other end of the first sleeving spring is abutted against the first fixing protrusion, the buffer spring is sleeved outside the second sleeving section, one end of the second sleeving spring is abutted against the second sleeving protrusion, the other end of the second sleeving spring is abutted against the second fixing protrusion, the three buffer springs are sleeved outside the third sleeving section, one end of the third sleeving spring is abutted against the third sleeving protrusion, and the other end of the third sleeving spring is abutted against the third fixing protrusion;
the coaxial connection pad that is provided with of connecting device's power take off end, the coaxial jack of having seted up of buffering lid, connecting device's power take off end passes the jack and is located the buffering shell and the connection pad is located the buffering shell, connection pad and buffering frame between be provided with the mounting and both carry out fixed connection through the mounting, the mounting including set up in the dead lever of buffering frame, set up in the connection pad and with the corresponding assorted fixed orifices of dead lever.
3. The elevator braking system based on hydraulic cylinder-triggered cushion braking as claimed in claim 2, wherein the connecting means comprises a connecting mechanism for slidably connecting with the guide rail, and a transmission mechanism for transmitting the moving speed of the moving object to the speed sensing device through the braking device;
the connecting mechanism comprises an installation shell and an installation cover which are of a cuboid structure, wherein a sliding groove with a guide direction parallel to the guide rail is arranged on the surface of the installation shell facing the guide rail, the sliding groove divides the surface of the installation shell facing the guide rail into two parts, namely an installation surface a and an installation surface b, the installation cover comprises an installation cover a and an installation cover b, the installation cover a is fixedly installed on the installation surface a, the side surface of the installation cover a facing the installation surface b is located in a notch area of the sliding groove, the installation cover b is fixedly installed on the installation surface b, the side surface of the installation cover b facing the installation surface a is located in the notch area of the sliding groove, and the side surface of the installation cover a facing the installation surface b and the side surface of the installation cover b facing the;
the transmission mechanism comprises a rack, a driven gear and a transmission shaft, the extending direction of the rack is parallel to the guiding direction of the guide rail, the rack is arranged in the sliding groove, a connecting plate which extends towards the guide rail direction, penetrates through the limiting groove and is positioned outside the mounting cover is arranged on the surface of the rack facing the guide rail, a fastener is arranged between the connecting plate and the guide rail, the connecting plate and the guide rail are fixedly mounted through the fastener, and the limiting groove enables the mounting shell to move only along the guiding direction of the guide rail;
the groove wall of the chute facing the tooth surface of the rack is provided with a mounting groove a, the mounting groove a is parallel to the mounting surface a and is provided with an avoiding hole far away from the groove wall of the guide rail, the axial direction of the transmission shaft is perpendicular to the guide direction of the guide rail, the power input end of the transmission shaft penetrates through the avoiding hole and is positioned in the mounting groove a, the connecting disc is arranged at the power output end of the transmission shaft, the power output end of the transmission shaft penetrates through the jack and is positioned in the buffer shell, the connecting disc is positioned in the buffer shell, the driven gear is fixedly sleeved outside the power input end of the transmission shaft and is meshed with the rack, and the moving object moves and pulls the transmission shaft to synchronously rotate through the rack and the.
4. The elevator braking system based on hydraulic cylinder-triggered buffer braking as claimed in claim 1 or 2, wherein the braking device comprises a braking mechanism, a hydraulic pipe network and a control valve, the power receiving end of the braking mechanism passes through the through hole and is connected with the buffer housing and used for providing motion resistance for the moving object, the hydraulic pipe network is used for connecting and connecting the braking mechanism and the control valve, and the control valve is used for controlling the motion resistance provided by the braking mechanism for the moving object;
the brake mechanism comprises a brake shell, a hydraulic cylinder and a linkage mechanism, wherein the brake shell is of a cylinder structure with one end open and the other end closed, a brake cover is arranged at the open end in a matched manner, a bearing hole a is coaxially formed in the closed end of the brake shell, a bearing hole b is coaxially formed in the end surface of the brake cover, and the closed end of the brake shell is coaxially and fixedly arranged on the buffer mechanism;
the hydraulic cylinder comprises a hydraulic cylinder body, a piston and a piston rod, wherein a fixed sleeve communicated with an inner cavity of the brake shell is arranged on the outer circular surface of the brake shell, the hydraulic cylinder body is of a cylinder structure with two open ends and the axial direction of the hydraulic cylinder body is vertical to the axial direction of the brake shell, the hydraulic cylinder body is fixedly arranged in the fixed sleeve, one open end of the hydraulic cylinder body is positioned in the brake shell, the other open end of the hydraulic cylinder body is positioned outside and is matched with a hydraulic cylinder cover, the hydraulic cylinder cover is provided with an interface communicated with the inner cavity of the hydraulic cylinder body, the piston is arranged in the hydraulic cylinder body and forms sealed sliding fit with the piston, one end of the;
the four hydraulic cylinders are uniformly distributed at intervals along the circumferential direction of the brake shell, the four hydraulic cylinders are respectively a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder and a fourth hydraulic cylinder, the first hydraulic cylinder and the second hydraulic cylinder are symmetrically distributed about the axis of the transmission shaft, and the third hydraulic cylinder and the fourth hydraulic cylinder are symmetrically distributed about the axis of the transmission shaft;
the linkage mechanism is arranged in the brake shell and comprises a first linkage shaft, a first rotary table, a first intermediate shaft, a second rotary table and a second linkage shaft, wherein the first linkage shaft, the first rotary table, the first intermediate shaft, the second rotary table and the second linkage shaft are sequentially arranged along the direction of the closed end of the brake shell pointing to the open end of the brake shell, the power input end of the first linkage shaft penetrates through a bearing hole a and is connected with the buffer mechanism, the first rotary table is coaxially and fixedly connected with the power output end of the first linkage shaft, the axial directions of the first intermediate shaft and the second intermediate shaft are parallel to the axial direction of the transmission shaft, the outer part of the first intermediate shaft is movably sleeved with a first connecting sleeve and the outer part of the second intermediate shaft is movably sleeved with a second connecting sleeve, the second linkage shaft and the linkage shaft are coaxially arranged, the power input end of the second linkage shaft is positioned in the brake, the second rotating disc is coaxially and fixedly sleeved at the power input end of the second linkage shaft;
the driving end of the piston rod of the first hydraulic cylinder and the driving end of the piston rod of the second hydraulic cylinder are both in arc-shaped groove structures, the driving end of the piston rod of the first hydraulic cylinder and the driving end of the piston rod of the second hydraulic cylinder are spliced into a first ring sleeve which is slidably sleeved on the first connecting sleeve, the driving end of the piston rod of the third hydraulic cylinder and the driving end of the piston rod of the fourth hydraulic cylinder are both in arc-shaped groove structures, and the driving end of the piston rod of the third hydraulic cylinder and the driving end of the piston rod of the fourth hydraulic cylinder are spliced into a second ring sleeve which is slidably sleeved;
a first linkage plate is arranged between the first rotary table and the first intermediate shaft, one end of the first linkage plate is hinged with the first rotary table, the hinged position deviates from the circle center of the first rotary table, and a core line of a hinged shaft is parallel to the axial direction of the first linkage shaft;
a second linkage plate is arranged between the first intermediate shaft and the second intermediate shaft, one end of the second linkage plate is hinged with the power output end of the first intermediate shaft, and the core line of the hinge shaft is parallel to the axial direction of the first linkage shaft, and the other end of the second linkage plate is hinged with the power input end of the second intermediate shaft, and the core line of the hinge shaft is parallel to the axial direction of the first linkage shaft;
a third linkage plate is arranged between the second intermediate shaft and the second rotary table, one end of the third linkage plate is hinged with the power output end of the second intermediate shaft, a core line of a hinged shaft is parallel to the axial direction of the first linkage shaft, the other end of the second linkage plate is hinged with the second rotary table, the hinged part deviates from the circle center of the second rotary table, and the core line of the hinged shaft is parallel to the axial direction of the first linkage shaft;
and a speed increasing device is arranged between the second linkage shaft and the speed sensing device and is connected and driven through the speed increasing device, and the speed increasing device is used for increasing the speed transmitted to the speed sensing device by the braking device and does not influence the operation of the braking device.
5. The elevator braking system based on hydraulic cylinder-to-cylinder triggered buffer braking as claimed in claim 4, wherein the control valve comprises a first control valve, a second control valve and a mounting plate, the first control valve is used for controlling the unit flow of hydraulic oil between the first hydraulic cylinder and the second hydraulic cylinder, the second control valve is used for controlling the unit flow of hydraulic oil between the third hydraulic cylinder and the fourth hydraulic cylinder, the first control valve and the second control valve are both fixedly mounted on the mounting plate, the shape and structure of the first control valve and the second control valve are the same, and the first control valve and the second control valve are an integral structure;
the first control valve and the second control valve both comprise control valve bodies, each control valve body comprises a support shell and a control valve core, each support shell is of a rectangular cylinder structure with one open end and the other closed end, the open end of each support shell is provided with a valve cover in a matched mode, a sliding hole communicated with the inner cavity of each support shell is formed in each valve cover, the closed end of each support shell is fixedly connected with the mounting plate, each support shell is also provided with a first connecting nozzle and a second connecting nozzle which are communicated with the inner cavity of each support shell, the first connecting nozzle and the second connecting nozzle are respectively arranged on different side faces of each support shell, and each control valve core is arranged in the inner cavity of each support shell;
the control valve core comprises a valve rod, a sealing plug a close to the valve cover and a sealing plug b far away from the valve cover, the sealing plug a and the sealing plug b are in sealed sliding fit with the support shell, the sealing plug a and the sealing plug b are connected through a connecting rod, the first connecting nozzle and the second connecting nozzle are located between the sealing plug a and the sealing plug b, one end of the valve rod is connected with the sealing plug a, and the other end of the valve rod penetrates through the sliding hole and is connected with the speed sensing device;
the hydraulic pipe network comprises a first hydraulic pipe, a second hydraulic pipe, a third hydraulic pipe and a fourth hydraulic pipe, one end of the first hydraulic pipe is communicated with an interface of the first hydraulic cylinder, the other end of the first hydraulic pipe is communicated with a connecting nozzle of the first control valve, one end of the second hydraulic pipe is communicated with an interface of the second hydraulic cylinder, the other end of the second hydraulic pipe is communicated with a connecting nozzle of the first control valve, one end of the third hydraulic pipe is communicated with an interface of the third hydraulic cylinder, the other end of the third hydraulic pipe is communicated with a connecting nozzle of the second control valve, one end of the fourth hydraulic pipe is communicated with an interface of the fourth hydraulic cylinder, and the other end of the fourth hydraulic pipe is communicated with a connecting nozzle of the second control valve.
6. The elevator braking system based on hydraulic cylinder-triggered cushion braking as claimed in claim 5, wherein the speed sensing device comprises a sensing shaft, a fixed member, a sliding member and a pulling member, the sensing shaft has an axial direction parallel to the axial direction of the transmission shaft, and the power receiving end of the sensing shaft is connected with the speed increasing device and can rotate around the self axial direction;
the fixed component comprises a fixed sleeve in an annular structure, the fixed sleeve is fixedly sleeved on the power output end of the induction shaft, and a hinged bulge a is arranged on the outer circular surface of the fixed sleeve;
the sliding component comprises a sliding sleeve in an annular structure, the sliding sleeve is arranged between the power output end of the induction shaft and the control valve, the sliding sleeve is movably sleeved outside the induction shaft, a hinge bulge b is arranged on the outer circular surface of the sliding sleeve, and the sliding sleeve can rotate around the axial direction of the sliding sleeve and can move along the axial direction of the induction shaft;
the pulling component is arranged between the sliding component and the control valve and comprises a pull rod and a pulling sleeve, the pull rod is of an annular structure and is movably sleeved outside the induction shaft, one end of the pull rod is fixedly connected with the sliding sleeve, the other end of the pull rod is a pulling end and is provided with an external step a, the pulling sleeve is of an annular structure, the pulling sleeve is provided with an internal step towards the annular end of the sliding component, the pulling sleeve is sleeved outside the pull rod, the internal step is mutually abutted with the external step a, the inner cavity of the pulling sleeve is in sliding fit with the outer circular surface of the pull rod, the sliding sleeve moves along the axial direction of the induction shaft and pulls the pulling sleeve to move synchronously through the pull rod, the outer circular surface of the pulling sleeve is also provided with a connecting bulge a and a connecting bulge b, the valve rod of the control valve I is fixedly connected with the connecting bulge a, and the valve rod of the control valve II is fixedly connected with the connecting bulge b;
the speed sensing device also comprises a speed sensing mechanism, wherein the speed sensing mechanism comprises a stretching component and a connecting rod, the stretching component comprises a stretching rod, one end of the stretching rod is hinged with a hinge bulge a arranged on the outer circular surface of the fixed sleeve, a hinge shaft core wire is vertical to the axial direction of the sensing shaft, the other end of the stretching rod is provided with a load body, one end of the connecting rod is hinged with a hinge bulge b arranged on the outer circular surface of the sliding sleeve, the hinge shaft core wire is vertical to the axial direction of the sensing shaft, the other end of the connecting rod is hinged with the stretching rod, the hinge shaft core wire is vertical to the axial direction of the sensing shaft, and hinge grooves are formed in the hinge positions of the stretching rod and the hinge bulge a, the hinge positions of the connecting rod and the hinge bulge b and the;
the speed induction mechanisms are three and are uniformly distributed at intervals along the circumferential direction of the induction shaft.
7. The system according to claim 6, wherein the speed sensor further comprises a self-locking mechanism for preventing the speed sensor from being automatically switched to an un-triggered state;
the sliding sleeve is divided into two parts along the axial direction of the induction shaft, and the two parts are respectively a driving section close to the pulling member and an installation section close to the fixing member, the driving section is connected with the pulling member, and the self-locking mechanism is arranged on the outer circular surface of the installation section;
the outer circle surface of the mounting section is provided with a mounting hole communicated with the annular inner cavity of the mounting section, and the part of the induction shaft between the sliding component and the fixed component is provided with a self-locking groove in an annular structure;
the self-locking mechanism comprises a self-locking shell and a self-locking component arranged in the self-locking shell, the self-locking shell is of a cylinder structure with one end open and the other end closed, an extending hole is coaxially formed in the closed end, the open end of the self-locking shell is fixedly arranged on the outer circular surface of the mounting section, and the mounting hole is communicated with the inner cavity of the self-locking shell;
the auto-lock component include from locking lever, auto-lock spring, the one end of auto-lock lever be the free end and lie in the auto-lock shell outside, the other end is the auto-lock end and pass and set up in the hole that stretches out of auto-lock shell blind end, the inner chamber of auto-lock shell, set up in the mounting hole of the outer disc of installation segment and with the outer disc contact of induction shaft, the part that the auto-lock lever lies in the auto-lock shell is provided with external step b, the auto-lock spring cup joint in the auto-lock lever outside and the initial condition of auto-lock spring is compression state, the one end of auto-lock spring is contradicted at the bottom of the inner chamber of auto-lock shell, the other end is contradicted with external step b, the elasticity.
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CN115045945B (en) * 2022-05-11 2023-12-05 北京电子工程总体研究所 Hydraulic buffer device

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CN201756393U (en) * 2010-07-09 2011-03-09 杭州西子孚信科技有限公司 Elevator hoistway door safety protection device
CN103640945A (en) * 2013-12-23 2014-03-19 上海微频莱机电科技有限公司 Linkage device used for elevator car accidental movement safety protection mechanism
CN204873314U (en) * 2015-08-14 2015-12-16 王砚俊 Elevator safety pintle hook lock
CN204897073U (en) * 2015-07-22 2015-12-23 山推建友机械股份有限公司 Eccentric wheeled anti -falling device
CN107055250A (en) * 2017-02-05 2017-08-18 六安永贞匠道机电科技有限公司 Speed limit catching device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201756393U (en) * 2010-07-09 2011-03-09 杭州西子孚信科技有限公司 Elevator hoistway door safety protection device
CN103640945A (en) * 2013-12-23 2014-03-19 上海微频莱机电科技有限公司 Linkage device used for elevator car accidental movement safety protection mechanism
CN204897073U (en) * 2015-07-22 2015-12-23 山推建友机械股份有限公司 Eccentric wheeled anti -falling device
CN204873314U (en) * 2015-08-14 2015-12-16 王砚俊 Elevator safety pintle hook lock
CN107055250A (en) * 2017-02-05 2017-08-18 六安永贞匠道机电科技有限公司 Speed limit catching device

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