CN216589343U - Stepless pressure regulating backup liquid path for safety brake of elevator - Google Patents
Stepless pressure regulating backup liquid path for safety brake of elevator Download PDFInfo
- Publication number
- CN216589343U CN216589343U CN202123076143.5U CN202123076143U CN216589343U CN 216589343 U CN216589343 U CN 216589343U CN 202123076143 U CN202123076143 U CN 202123076143U CN 216589343 U CN216589343 U CN 216589343U
- Authority
- CN
- China
- Prior art keywords
- valve
- port
- safety
- oil
- brake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Landscapes
- Types And Forms Of Lifts (AREA)
Abstract
The utility model provides a stepless pressure regulating backup liquid way of lifting machine safety braking which characterized in that: the system comprises an oil source device 33, a safety control device, a G3 main valve, a G4 main valve, a G5 safety valve, a G6 redundant safety valve, a G7 redundant main valve, a safety brake pressure gauge, a system oil pressure gauge, an energy storage device, a B oil channel stop valve, an A oil channel stop valve, a B oil channel brake group and an A oil channel brake group; the stepless pressure regulating backup liquid path for the safety brake of the elevator, provided by the utility model, has the advantages of simple structure, convenience in operation and strong practicability, is suitable for popularization and use in the industry, can effectively solve the stability and safety of the safety brake of the mine elevator, and can control the brake set of the mine elevator to apply adaptive braking force when emergency shutdown is required due to safety failure under the condition of discharging or lifting working conditions including different load capacities, so that the elevator can be safely and stably shut down.
Description
Technical Field
The utility model relates to the technical field of safety brake hydraulic pressure of mine hoists, in particular to a safe brake stepless pressure regulating backup liquid path of a hoist.
Background
The mining elevator is key equipment for coal mining and transportation, the unloading and transportation of the mining elevator relate to the joint production efficiency of the whole production series equipment, a hydraulic braking system of the mining elevator is an important control link of the working braking and safe emergency braking of the elevator, the working braking is the starting and stopping process when normal lifting operation is completed, the safe braking is that when a host system has serious faults in the aspects of mechanical, electrical and hydraulic control and cannot execute normal working tasks, in order to ensure the safety of personnel and equipment, the elevator in high-speed operation is initiatively, stably and safely stopped according to the deceleration required by design, and a maintenance program is conveniently arranged. The traditional method for stopping the elevator under the fault condition in the prior art is secondary braking, the existing hydraulic control system for the secondary braking mainly applies a part of braking force when the elevator runs at a high speed, namely the first-stage braking force, during closing braking, the elevator is not stopped too fast, and the part of braking force which is not used up is applied after the elevator is stopped, the whole braking process is called secondary braking, and the secondary mechanical and personal injury accidents caused by the fact that the deceleration of a lifted container is too large in the braking process are mainly prevented. In fact, the safety braking of the hoister has two conditions of heavy load lowering and heavy load hoisting, and the common situation that a better braking effect is required to be generated under the two conditions is difficult to realize; the other condition is that even under the working conditions of heavy-load lowering and heavy-load lifting, the difference between the middle range of the load from light load to heavy load exists, sometimes the difference between the heavy load and the light load is very large, the braking deceleration is difficult to control in a proper range when the elevator under the load operation with larger difference is in emergency stop, even only one fixed first-stage braking torque is used for adapting to the stop of the elevator under the working conditions of various complex loads, the design of the elevator per se has huge risks, and the main reason is that the traditional safety braking electric control design and the control liquid path design principle executed by the safety braking of the hydraulic control equipment have a technology lagging concept.
The deceleration requirement of the safe braking of the elevator is an ideal numerical range, and how to realize the control of the electric control and the hydraulic system according to the ideal deceleration is a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems of stable and safe safety brake of a mine hoist and provide a safe brake stepless pressure regulating backup liquid path of the hoist.
The purpose of the utility model is realized by adopting the following technical scheme. The utility model provides a stepless pressure regulating backup liquid path for safety braking of an elevator, which comprises an oil source device 33, a safety control device, a G3 main valve, a G4 main valve, a G5 safety valve, a G6 redundant safety valve, a G7 redundant main valve, a safety braking pressure gauge, a system oil pressure gauge, an energy storage device, a B oil channel stop valve, an A oil channel stop valve, a B oil channel brake group and an A oil channel brake group;
the T port of the G4 main valve, the T port of the G5 safety valve, the T port of the G6 redundant safety valve and the T port of the G7 redundant main valve are all connected with the oil tank, and the oil source device is respectively connected with the P port of the G3 main valve, the system oil pressure gauge and the P port of the G4 main valve; the port B of the main valve G3 is respectively connected with one end of a safety control device, an oil inlet of a stop valve of the oil passage B, the port A of a G6 redundant safety valve, a safety brake pressure gauge, an energy storage device and the port A of a G5 safety valve; the other end of the safety control device is respectively connected with an A port of a G4 main valve, an A port of a G7 redundant main valve and an oil inlet of an A oil channel stop valve; the oil outlet of the oil duct A stop valve is connected with the oil duct A brake set; and an oil outlet of the oil passage B stop valve is connected with an oil passage B brake set.
Preferably, the oil source device comprises an electro-hydraulic proportional overflow valve for the oil source, a screen filter, an oil pump and a motor, wherein a T port of the electro-hydraulic proportional overflow valve for the oil source is connected with the oil tank, and a P port of the electro-hydraulic proportional overflow valve for the oil source is respectively connected with a P port of a G3 main valve, a system oil pressure gauge, the oil pump and a P port of a G4 main valve; the oil pump is connected with motor electric connection, and the oil inlet of oil pump is connected with the oil-out of net filter.
Preferably, the energy storage device comprises a one-way valve, a throttle valve connected with the one-way valve in parallel and an energy storage device, one end of the one-way valve is connected with the energy storage device, and the other end of the one-way valve is respectively connected with the port A of the G5 safety valve, the port A of the G6 redundant safety valve, the safety brake pressure gauge, the B oil channel stop valve, the port A of the G3 main valve and the safety control device.
Preferably, the safety control device is a safety electro-hydraulic proportional overflow valve, a T port of the safety electro-hydraulic proportional overflow valve is respectively connected with an oil inlet of a stop valve of the a oil duct, an a port of a G4 main valve and an a port of a G7 redundant main valve, and a P port of the safety electro-hydraulic proportional overflow valve is respectively connected with a B oil duct stop valve, a B port of a G3 main valve, an a port of a G6 redundant safety valve, the energy storage device and an a port of a G5 safety valve.
Preferably, the safety control device is a safety proportional regulating valve group; the safety proportional regulating valve group comprises a direct-acting proportional valve, a throttling plug, a pilot overflow valve, a peripheral liquid path connection port T1 and an external control port X, wherein a P port of the direct-acting proportional valve is respectively connected with an output port of the throttling plug and the external control port X of the pilot overflow valve; the T port of the direct acting proportional valve is respectively connected with the T port of the pilot overflow valve and one end of a peripheral liquid path connection port T1; the other end of the peripheral liquid path connection port T1 is respectively connected with a stop valve of an oil passage A, an A port of a G4 main valve and an A port of a G7 redundant main valve; the input port of the throttle plug and the P port of the pilot overflow valve are connected with one end of a peripheral liquid path connection port P1, and the other end of the peripheral liquid path connection port P1 is respectively connected with a B oil channel stop valve, a B port of a G3 main valve, an A port of a G6 redundant safety valve, a safety brake pressure gauge, an energy storage device and an A port of a G5 safety valve.
The safety braking stepless pressure regulating backup liquid path for the hoister, provided by the utility model, has the following advantages:
1. the utility model relates to a stepless pressure regulating backup liquid path for safety braking of a hoist, which can effectively solve the problem of stability and safety of safety braking of a mine hoist, can control a brake group to apply adaptive braking force when emergency shutdown is required due to safety failure under the condition of lowering or lifting working conditions including the existence of different load capacity, and ensures that the hoist is safely and stably shut down
2. The safety braking stepless pressure regulating backup liquid path for the elevator is simple in structure, convenient to operate, high in practicability and suitable for popularization and use in the industry.
The foregoing is a summary of the present invention, and for the purpose of making the technical means of the present invention more comprehensible, embodiments thereof are described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a front view of the elevator and brake set.
Fig. 2 is a top view of the elevator.
Fig. 3 is a schematic diagram (a) of a safe braking stepless pressure regulating backup liquid path of the elevator.
Fig. 4 is a schematic diagram (B) of a stepless pressure regulating backup liquid path for safety braking of the elevator.
FIG. 5 is a graph of the relationship between the electrical signal of the intelligent brake oil pressure and the oil pressure of the brake shoe.
Fig. 6 is a positive pressure schematic diagram of the intelligent brake applying the brake disc.
Reference numerals
I-a hoist brake disc, II-an intelligent brake, III-an intelligent brake seat device, IV-a hoist main shaft device bearing seat, V-a bearing seat supporting beam, VI-a main shaft device winding drum, VII-a hoist steel wire rope, 1-an electro-hydraulic proportional overflow valve for an oil source, 2-a safe electro-hydraulic proportional overflow valve, a 3-G3 main valve, a 4-G4 main valve, a 5-G5 safety valve, a 6-G6 redundant safety valve, a 7-G7 redundant main valve, an 8-net filter, a 9-oil pump, a 10-motor, an 11-system oil pressure gauge, a 12-one-way valve, a 13-throttle valve, a 14-energy accumulator, a 15-a safe brake pressure gauge, a 16-B oil channel stop valve, a 17-A oil channel stop valve and an 18-B oil channel brake group, 19-A oil passage brake group, 21-safety proportional regulating valve group, 22-direct acting proportional valve, 23, throttling plug, 24-pilot overflow valve, 31-brake disc, 32-energy storage device and 33-oil source device.
Detailed Description
In order to further illustrate the technical means and efficacy adopted by the utility model to achieve the preset purpose, the following detailed description is made on a stepless pressure regulating backup liquid path for safety braking of an elevator, which is provided by the utility model, by combining the accompanying drawings and a preferred embodiment.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Example one
Referring to fig. 3, a stepless pressure regulating backup liquid path for elevator safety braking includes an oil source device 33, a safety control device, a G3 main valve 3, a G4 main valve 4, a G5 safety valve 5, a G6 redundant safety valve 6, a G7 redundant main valve 7, a system oil pressure gauge 11, an energy storage device safety braking pressure gauge 15, a B oil passage stop valve 16, an a oil passage stop valve 17, a B oil passage brake group 18, and an a oil passage brake group 19, in this embodiment, the safety control device is a safety electric liquid proportional relief valve 2.
The oil source device 33 comprises an oil source electro-hydraulic proportional overflow valve 1, a mesh filter 8, an oil pump 9 and a motor 10, the energy storage device 32 comprises a one-way valve 12, a throttle valve 13 and an energy storage device 14, an oil return low-pressure end T of the oil source electro-hydraulic proportional overflow valve 1 leads to an oil tank, and a P port of a high-pressure input end of the oil source electro-hydraulic proportional overflow valve 1 is respectively connected with a P port of a G3 main valve 3, a system oil pressure gauge 11, an oil outlet of the oil pump 9 and a P port of a G4 main valve 4; the motor and the oil pump are mechanically connected to form synchronous rotation; the energy storage device consists of a one-way valve, a throttle valve and an energy accumulator, wherein the one-way valve is connected with the throttle valve in parallel, and oil inlets of the one-way valve and the throttle valve are communicated with P;
the P port of the G3 main valve 3 is respectively connected with the P port of the oil source electro-hydraulic proportional relief valve 1, the P port of the system oil pressure gauge 11, the oil pump 9 and the P port of the G4 main valve 4, and the B port of the G3 main valve 3 is respectively connected with the P port of the safety electro-hydraulic proportional relief valve 2, the B oil channel stop valve 16, the A port of the G6 redundant relief valve 6, the safety brake pressure gauge 15, the throttle valve 13, the check valve 12 and the A port of the G5 relief valve 5;
the T port of the low-pressure oil return end of the electric-hydraulic proportional relief valve 2 for safety is respectively connected with the A port of a stop valve 17 of an oil duct A, the A port of a main valve 4 of G4 and the A port of a redundant main valve 7 of G7, and the high-pressure input end P of the electric-hydraulic proportional relief valve 2 for safety is respectively connected with the B port of a stop valve 16 of an oil duct B, the B port of a main valve 3 of G3, the A port of a redundant safety valve 6 of G6, a safety brake pressure gauge 15, a throttle valve 13, a check valve 12 and the A port of a safety valve 5 of G5;
the T port of a G4 main valve 4 is communicated with an oil tank, the P port of the G4 main valve 4 is respectively connected with a system oil pressure gauge 11, the P ports of an oil pump 9 and a G3 main valve 3 and the P port of an oil source electro-hydraulic proportional relief valve 1, and the A port of the G4 main valve 4 is respectively connected with the A port of a G7 redundant main valve 7, an A oil channel stop valve 17 and the T port of a safety electro-hydraulic proportional relief valve 2;
the T port of the G5 safety valve 5 is communicated with an oil tank, and the A port of the G5 safety valve is respectively connected with the A port of a one-way valve 12, a throttle valve 13, a safety brake pressure gauge 15, the G6 redundant safety valve 6, a B oil channel stop valve 16, a port B of a G3 main valve 3 and a P port of a safety electro-hydraulic proportional overflow valve 2;
the T port of the G6 redundant safety valve is communicated with an oil tank, and the A port of the G6 redundant safety valve is respectively connected with the A ports of the check valve 12, the throttle valve 13 and the G5 safety valve 5, the safety brake pressure gauge 15, the B oil channel stop valve 16, the port B of the G3 main valve 3 and the P port of the safety electro-hydraulic proportional overflow valve 2;
the T port of the G7 redundant main valve 7 is communicated with an oil tank, and the port A of the G7 redundant main valve 7 is respectively connected with the A port of the A oil channel stop valve 17, the A port of the G4 main valve 4 and the T port of the safety electro-hydraulic proportional relief valve 2;
an oil inlet of the screen filter 8 is communicated with an oil tank, and an oil outlet is connected with an oil pump 9; an oil pump 9 is mechanically connected with a motor 10, an oil inlet of the oil pump 9 is connected with an oil outlet of a mesh filter 8, and an oil outlet of the oil pump 9 is respectively connected with a system oil pressure gauge 11, a P port of a G4 main valve 4, a P port of an oil source electro-hydraulic proportional overflow valve 1 and a P port of a G3 main valve 3; the system oil pressure gauge 11 is respectively connected with an oil outlet of the oil pump 9, a P port of a G4 main valve 4, a P port of the electro-hydraulic proportional relief valve 1 for an oil source and a P port of a G3 main valve 3; the oil outlet end of the one-way valve 12 is respectively connected with the energy accumulator 14 and the throttle valve 13, and the oil inlet end of the one-way valve 12 is respectively connected with the port A of the G5 safety valve 5, the port A of the G6 redundant safety valve 6, the safety brake pressure gauge 15, the B oil channel stop valve 16, the port B of the G3 main valve 3 and the port P of the safety electro-hydraulic proportional overflow valve 2;
one end of the throttle valve 13 is respectively connected with the oil outlets of the energy accumulator 14 and the check valve 12, and the other end of the throttle valve 13 is respectively connected with the port A of the G5 safety valve 5, the port A of the G6 redundant safety valve 6, the safety brake pressure gauge 15, the B oil channel stop valve 16, the port B of the G3 main valve 3 and the port P of the safety electro-hydraulic proportional relief valve 2; the energy accumulator 14 is respectively connected with the oil outlet of the one-way valve 12 and the throttle valve 13;
the safety brake pressure gauge 15 is respectively connected with a B port of a B oil channel stop valve 16 and a G3 main valve 3, an A port of a G6 redundant safety valve 6, a throttle valve 13, a check valve 12, an A port of a G5 safety valve 5 and a high-pressure input end P port of a safety electro-hydraulic proportional overflow valve 2;
the oil outlet of the B oil channel stop valve 16 is connected with the B oil channel brake group 18, and the oil inlet thereof is respectively connected with a B port of a safety brake pressure gauge 15 and a main valve 3 of G3, an A port of a G6 redundant safety valve 6, a throttle valve 13, a check valve 12, a safety brake pressure gauge 15, an A port of a G5 safety valve 5 and a high-pressure input end P port of a safety electro-hydraulic proportional overflow valve 2; the throttle valve 13 is connected in parallel with the check valve 12.
An oil outlet of the A oil channel stop valve 17 is connected with the A oil channel brake group 19, and oil inlets of the A oil channel stop valve 17 are respectively connected with a T port of the safety electro-hydraulic proportional overflow valve 2, an A port of the G4 main valve 4 and an A port of the G7 redundant main valve 7; the oil passage B brake group 18 is connected with the oil passage B stop valve 16; the A oil duct brake group 19 is connected with the oil outlet end of the A oil duct stop valve 17.
Example two
Referring to fig. 4, the stepless pressure regulating backup liquid path for elevator safety braking in this embodiment includes an oil source device 33, a safety control device, a G3 main valve 3, a G4 main valve 4, a G5 safety valve 5, a G6 redundant safety valve 6, a G7 redundant main valve 7, a system oil pressure gauge 11, an energy storage device 32 safety braking pressure gauge 15, a B oil passage stop valve 16, an a oil passage stop valve 17, a B oil passage brake group 18, and an a oil passage brake group 19; the oil source device 33 comprises an electro-hydraulic proportional overflow valve 1 for an oil source, a mesh filter 8, an oil pump 9 and a motor 10,
the energy storage device 32 comprises a one-way valve 12, a throttle valve 13 and an energy accumulator 14,
the difference between the present embodiment and the first embodiment is only that, in the present embodiment, the safety control device selects the safety proportional control valve set 21;
the safety proportional control valve group 21 comprises a direct-acting proportional valve 22, a throttling plug 23, a pilot overflow valve 24, a peripheral liquid path connection port T1 and an external control port X, wherein a P port of the direct-acting proportional valve 22 is respectively connected with an output port of the throttling plug 23 and the external control port X of the pilot overflow valve 24, and a T port of the direct-acting proportional valve 22 is respectively connected with a T port of the pilot overflow valve 24 and the peripheral liquid path connection port T1; the other end of the peripheral liquid path communication port T1 is respectively connected with the stop valve 17 of the A oil channel, the A port of the G4 main valve 4 and the A port of the G7 redundant main valve 7;
an output port of the throttle plug 23 is respectively connected with a P port of the direct-acting proportional valve 22 and an external control port X of the pilot overflow valve 24, and an input port of the throttle plug 23 is respectively connected with the P port of the pilot overflow valve 24 and a peripheral liquid path connection port P1; the other end of the peripheral liquid path communication port P1 is respectively connected with a B oil channel stop valve 16, a B port of a G3 main valve 3, an A port of a G6 redundant safety valve 6, a safety brake pressure gauge 15, a throttle valve 13, a one-way valve 12 and an A port of a G5 safety valve 5; the P port of the pilot relief valve 24 is connected to the peripheral fluid passage connection port P1 and the input port of the spool 23, the T port thereof is connected to the peripheral fluid passage connection port T1 and the T port of the direct acting proportional valve 22, and the external control port X is connected to the output port of the spool 23 and the P port of the direct acting proportional valve 22.
Referring to fig. 1 and fig. 2, when the elevator performs emergency safety braking, the braking deceleration is controlled by a comprehensive brake application positive pressure NBr (see fig. 6) of the intelligent brake ii on a brake disc i of the elevator, and the brake application positive pressure NBr is controlled by a safety braking dynamic brake application oil pressure P (see fig. 5 and fig. 6) provided by a hydraulic system, where the brake application oil pressure value is an oil pressure value generated on a safety control device (i.e., a safety electro-hydraulic proportional relief valve 2 in the first embodiment and a safety proportional control valve group 21 in the second embodiment) when the elevator performs safety braking; during safety braking, the oil pressure value generated by the safe electro-hydraulic proportional relief valve 2 or the safe proportional control valve group 21 is reasonably changed along with different running time of equipment and the change of the parameters of a mechanical system in running, so that the oil pressure value is applied to an intelligent brake of the B oil duct brake group 18 under any emergency safety braking condition, and after the oil pressure of the intelligent brake of the A oil duct brake group 19 is relieved to zero pressure, the braking force of the two brake groups comprehensively acts to ensure that an elevator system obtains an ideal constant deceleration braking working condition.
To illustrate the efficacy of the present invention in generating an ideal constant deceleration, two embodiments are described below.
In the first embodiment:
referring to fig. 3, the operation braking process is as follows: the motor 10 drives the oil pump 9 to operate to send high-pressure oil into a P port of the hydraulic proportional overflow valve 1 for the oil source, and oil pressure is stabilized under the condition of normal working oil pressure of lifting and lowering under the control of a proportional voltage signal; in the present embodiment, the valve body principle positions indicated by the G3 main valve 3, the G4 main valve 4, the G5 relief valve 5, the G6 redundant relief valve 6, and the G7 redundant main valve 7 are logical positions at which the respective solenoid valves are in the deenergized state, and the oil passage states of the internal passages of the respective valves are also logical intersection positions at which the respective solenoid valves are deenergized; when the hydraulic elevator works normally, each electromagnetic valve is in a power-on state, the valve core of each electromagnetic valve is in a position corresponding to power-on, at the moment, high-pressure oil controlled by the oil source electro-hydraulic proportional relief valve 1 is divided into two paths and simultaneously flows through a P port and a B port of a G3 main valve 3 and a P port and an A port of a G4 main valve 4, the high-pressure oil flowing through the G3 main valve 3 is sent into a B oil channel brake group 18 through a B oil channel stop valve 16, the high-pressure oil flowing through the G4 main valve 4 is sent into an A oil channel brake group 19 through an A oil channel stop valve 17, so that an intelligent brake of each brake group performs opening and closing actions to realize the working opening and the braking and closing of the elevator in the working process, the dynamic oil pressure value at the moment can be simultaneously displayed by a system oil pressure gauge 11 and a safety brake pressure gauge 15, the same high-pressure oil as that of the B oil channel brake group simultaneously flows through a one-way valve 12 and a throttle valve 13 to charge an energy accumulator 14, the oil pressure of the pipeline A and the pipeline B in the normal working condition rises and falls simultaneously, so that the oil pressure of a P port and a T port of the safety electro-hydraulic proportional relief valve 2 is equal, and the proportional relief valve is in a non-working state.
The emergency safety braking process is as follows: when the motor 10 is powered off, the oil pump 9 stops working, oil stops outputting, the G3 main valve 3, the G4 main valve 4 and the G7 redundant main valve 7 are all powered off, the valve core of the powered-off electromagnetic valve is shifted to a position where the powered-off electromagnetic valve should be reached, oil in the A oil channel brake group 19 is released to an oil tank from the A port and the T port of the G4 main valve 4 and the G7 redundant main valve 7, the pressure of the T port of the safety electro-hydraulic proportional relief valve 2 is zero, and the A oil channel brake group 19 is in a full braking state; the method is characterized in that the inner cavity of the B oil duct brake group 18 is determined to reach a reasonable oil pressure, an oil duct connected with the port B is closed after the power failure of the G3 main valve 3, the pressure difference is formed by the high-pressure oil in the B oil duct brake group 18 and the energy accumulator 14 under the conditions of the high pressure of a P port and the zero pressure of a T port of the safety electro-hydraulic proportional relief valve 2, the pressure difference is controlled by the direct-current signal voltage born by the proportional relief valve, the given value of the direct-current signal voltage needs to be subjected to the system parameter test and technical calculation determination of a computer of an electric control system in the running process of the elevator, the braking force generated by the B oil duct brake group 18 is also ensured to enable the elevator to obtain a pre-designed constant deceleration braking effect, the constant deceleration is generated, namely, the technical effect pursued by the safety braking stepless pressure regulating backup liquid circuit of the embodiment, and the calculation formula for obtaining the direct-current control signal voltage of the safety electro-hydraulic proportional relief valve 2 is as follows:
referring to fig. 3, through analysis and derivation of mechanical parameters, when the elevator is placed under heavy load, the elevator performs emergency safety braking, and a proportional valve signal voltage formula to be applied to a key safety electrohydraulic proportional overflow valve 2 in a stepless pressure regulating backup liquid path is as follows:
V＝Pm[1-(aM2/a2+M1)/(fLΣNBs)-ΣNAs/ΣNBs]/η(s＝1、2……n/2)；
wherein:
v: controlling a proportional valve to regulate and output direct current signal voltage of the gate-attaching oil pressure;
η: a correlation coefficient between the signal voltage V and the applied gate oil pressure P (see fig. 5, where η ═ tan θ) represents a relationship equation of P ═ η V;
NBr: the No. r intelligent brake in the oil passage B brake group 32 applies dynamic positive pressure to the brake disc 31 in braking;
Pm: maximum brake shoe sticking oil pressure;
ΣNAs: when the maximum brake shoe pressure PmThe sum of the positive pressures of all the intelligent gates 32 (see fig. 6) of the brake disc 31 of the a oil passage brake set 19 when the pressure drops to zero;
ΣNBs: when the maximum brake shoe pressure PmThe sum of the positive pressures of all the intelligent brakes 32 (see fig. 6) on the brake disc 31 of the B gallery brake set 18 when the pressure drops to zero;
M1the torque of a driving motor in the process of uniform lifting during the operation of the hoister can be obtained by detection and analysis in the operation of the motor;
M2the torque of a driving motor in the process of the running acceleration section of the elevator can be obtained by detection and analysis in the running process of the motor;
a2: the acceleration of the cage in the process of the running acceleration section of the hoister is detected and obtained in the running process;
a, the optimal constant deceleration value of the elevator, and generally, the selected a is 1.7m/s2Artificially setting in the program design of the electric control system;
f, detecting the dynamic friction coefficient between the brake shoe and the brake disc of the intelligent brake;
l: the radius from the friction center between the intelligent brake and the brake disc to the rotation center of the spindle device when the elevator brakes;
n: total number of intelligent gates.
When the hoister is lifted in a heavy load way, emergency safety braking is carried out, and the proportional valve signal voltage formula which is applied by the key safety electro-hydraulic proportional overflow valve 2 is as follows:
V＝Pm[1-(aM2/a2-M1)/(fLΣNBs)-ΣNAs/ΣNBs]/η(s＝1、2……n/2)；
wherein:
v: controlling a proportional valve to regulate and output direct current signal voltage of the gate-attaching oil pressure;
eta: a correlation coefficient between the signal voltage V and the applied gate oil pressure P (see fig. 5) represents a relationship equation P ═ η V;
NBr: the No. r intelligent brake in the oil passage B brake group 32 applies dynamic positive pressure to the brake disc 31 in braking;
Pm: maximum brake shoe sticking oil pressure;
ΣNAs: when the maximum brake shoe pressure PmThe sum of the positive pressures of all the intelligent gates 32 (see fig. 6) of the brake disc 31 of the a oil passage brake set 19 when the pressure drops to zero;
ΣNBs: when the maximum brake shoe pressure PmOil B reduced to zeroThe sum of the positive pressures of all the intelligent gates 32 (see fig. 6) of the brake disc 31 of the barrier brake set 18;
M1the torque of a driving motor in the process of uniform lifting during the operation of the hoister can be obtained by detection and analysis in the operation of the motor;
M2the torque of a driving motor in the process of the running acceleration section of the elevator can be obtained by detection and analysis in the running process of the motor;
a2: the acceleration of the cage in the process of the running acceleration section of the hoister is detected and obtained in the running process;
a, the optimal constant deceleration value of the elevator, and generally, the selected a is 1.7m/s2Artificially setting in the program design of the electric control system;
f, detecting the dynamic friction coefficient between the brake shoe and the brake disc of the intelligent brake;
l: the radius from the friction center between the intelligent brake and the brake disc to the rotation center of the main shaft device when the elevator brakes;
n: total number of intelligent gates.
In the second embodiment:
referring to fig. 4, the hydraulic proportional relief valve 1 for oil source, the safety control device, the G3 main valve 3, the G4 main valve 4, the G5 safety valve 5, the G6 redundant safety valve 6, the G7 redundant main valve 7, the mesh filter 8, the oil pump 9, the motor 10, the system oil pressure gauge 11, the check valve 12, the throttle valve 13, the accumulator 14, the safety brake pressure gauge 15, the B oil passage stop valve 16, the a oil passage stop valve 17, the B oil passage brake group 18, and the a oil passage brake group 19 in the hydraulic circuit all have the same functions as those in the first embodiment, and the hydraulic pressures of the a pipe and the B pipe in the normal operating condition are simultaneously raised and lowered, the oil pressures of the port P1 and the port T1 are equal, at this time, the efficacy exerted by the safety proportional regulating valve group 21 is the same as that of the safety electro-hydraulic proportional overflow valve 2 in the first embodiment, and the safety proportional regulating valve group 21 is also in a non-working state;
when emergency safety braking is carried out, oil communicated with the port T1 is drained into an oil tank, the oil pressure of the oil is reduced to zero, at the moment, the P1 port of the safety proportional control valve group 21 is in a high-pressure state, a local liquid path of the safety proportional control valve group 21 has a condition of establishing a liquid path pressure difference, the oil at the port P1 enters the direct-acting proportional valve 22 through the throttling plug 23, the direct-acting proportional valve 22 controlled by the direct-flow proportional signal V generates pilot control oil pressure, namely the P port oil pressure enters the external control port X of the pilot overflow valve 24, the oil pressure generated at the P port is consistent with the port P1, and the oil pressure, namely the brake positive pressure generated by the B brake group 18 under the control of the signal V, can enable the elevator to generate an optimal constant deceleration value a in the safety braking process.
The utility model relates to a stepless pressure regulating backup liquid path for safe braking of a lifter, which is an electro-hydraulic comprehensive control method different from the prior art when the lifter needs to start the safe emergency braking function under the condition that electric, hydraulic and mechanical systems have faults in the working process, so that the whole braking process is simple to control, the inertia of a lifting material, the inertia of a host system, the motor torque running at constant speed in the lifting process of the lifter, the torque and acceleration in the accelerating running process and the braking positive pressure of an intelligent brake are comprehensively analyzed and calculated by means of a powerful computer control detection technology and a mathematical calculation function so as to quickly obtain ideal electric control parameters, and the deceleration in the braking process of the lifter is stabilized at a constant value by directly using ideal electric control signals and hydraulic control parameters, so that the elevator can be braked according to the ideal constant deceleration in the safety braking process, and finally, the elevator can be stopped safely and stably.
The safe braking stepless pressure regulating backup liquid path of the elevator effectively solves the problems of stability and safety of safe braking of the mine elevator, and controls the brake group to apply adaptive braking force when the elevator needs to be stopped midway no matter the elevator is put under the mine elevator or the elevating working condition comprises safety faults under the condition that various different load quantities exist, so that the elevator is ensured to be stopped safely and stably; the control measures for applying proper braking force mainly depend on the quick and accurate capability of computer detection and analysis calculation of an electric control system, various key operation and inherent parameters of a hoist system including system inertia mechanical parameters, motor torque for constant-speed operation in hoisting, motor torque in hoisting and accelerating processes, hoisting acceleration and other parameters are calculated and learned and memorized by a computer system, when safety braking is required, the computer carries out unified and comprehensive calculation according to the actual load and the operation direction at that time to obtain signal voltage for controlling a hydraulic system and directly controls a hydraulic station to give reasonable brake-attaching oil pressure for driving each intelligent brake of a brake set to apply positive pressure to a brake disc of the hoist, and the braking process for ideal constant deceleration of the hoist system is completed.
The utility model has simple structure, convenient operation and strong practicability and is suitable for popularization and use in the industry.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the utility model in any way, and any simple modification, equivalent change and modification made by those skilled in the art according to the technical spirit of the present invention are still within the technical scope of the present invention without departing from the technical scope of the present invention.
Claims (5)
1. The utility model provides a stepless pressure regulating backup liquid way of lifting machine safety braking which characterized in that: the oil source device comprises an oil source device (33), a safety control device, a G3 main valve, a G4 main valve, a G5 safety valve, a G6 redundant safety valve, a G7 redundant main valve, a safety brake pressure gauge, a system oil pressure gauge, an energy storage device, a B oil channel stop valve, an A oil channel stop valve, a B oil channel brake group and an A oil channel brake group;
the T port of the G4 main valve, the T port of the G5 safety valve, the T port of the G6 redundant safety valve and the T port of the G7 redundant main valve are all connected with the oil tank, and the oil source device is respectively connected with the P port of the G3 main valve, the system oil pressure gauge and the P port of the G4 main valve; the port B of the main valve G3 is respectively connected with one end of a safety control device, an oil inlet of a stop valve of the oil passage B, the port A of a G6 redundant safety valve, a safety brake pressure gauge, an energy storage device and the port A of a G5 safety valve; the other end of the safety control device is respectively connected with an A port of a G4 main valve, an A port of a G7 redundant main valve and an oil inlet of an A oil channel stop valve; the oil outlet of the oil duct A stop valve is connected with the oil duct A brake set; and an oil outlet of the oil passage B stop valve is connected with an oil passage B brake set.
2. The elevator safety braking stepless pressure regulating backup liquid path as claimed in claim 1, characterized in that: the oil source device comprises an electro-hydraulic proportional overflow valve for the oil source, a mesh filter, an oil pump and a motor, wherein a T port of the electro-hydraulic proportional overflow valve for the oil source is connected with an oil tank, and a P port of the electro-hydraulic proportional overflow valve for the oil source is respectively connected with a P port of a G3 main valve, a system oil pressure gauge, the oil pump and a P port of a G4 main valve; the oil pump is connected with motor electric connection, and the oil inlet of oil pump is connected with the oil-out of net filter.
3. The elevator safety braking stepless pressure regulating backup liquid path as claimed in claim 1, characterized in that: the energy storage device comprises a one-way valve, a throttle valve and an energy accumulator, wherein the throttle valve and the energy accumulator are connected in parallel with the one-way valve, one end of the one-way valve is connected with the energy accumulator, and the other end of the one-way valve is respectively connected with an A port of a G5 safety valve, an A port of a G6 redundant safety valve, a safety brake pressure gauge, a B oil duct stop valve, an A port of a G3 main valve and a safety control device.
4. The elevator safety braking stepless pressure regulating backup liquid path as claimed in claim 1, characterized in that: the safety control device is a safety electro-hydraulic proportional overflow valve, a T port of the safety electro-hydraulic proportional overflow valve is respectively connected with an oil inlet of a stop valve of an oil duct A, an A port of a G4 main valve and an A port of a G7 redundant main valve, and a P port of the safety electro-hydraulic proportional overflow valve is respectively connected with a stop valve of an oil duct B, a B port of a G3 main valve, an A port of a G6 redundant safety valve, an energy storage device and an A port of a G5 safety valve.
5. The elevator safety braking stepless pressure regulating backup liquid path as claimed in claim 1, characterized in that: the safety control device is a safety proportional regulating valve group; the safety proportional regulating valve group comprises a direct-acting proportional valve, a throttling plug, a pilot overflow valve, a peripheral liquid path connection port T1 and an external control port X, wherein a P port of the direct-acting proportional valve is respectively connected with an output port of the throttling plug and the external control port X of the pilot overflow valve; the T port of the direct acting proportional valve is respectively connected with the T port of the pilot overflow valve and one end of a peripheral liquid path connection port T1; the other end of the peripheral liquid path connection port T1 is respectively connected with a stop valve of an oil passage A, an A port of a G4 main valve and an A port of a G7 redundant main valve; the input port of the throttle plug and the P port of the pilot overflow valve are connected with one end of a peripheral liquid path connection port P1, and the other end of the peripheral liquid path connection port P1 is respectively connected with a B oil channel stop valve, a B port of a G3 main valve, an A port of a G6 redundant safety valve, a safety brake pressure gauge, an energy storage device and an A port of a G5 safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123076143.5U CN216589343U (en) | 2021-12-08 | 2021-12-08 | Stepless pressure regulating backup liquid path for safety brake of elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123076143.5U CN216589343U (en) | 2021-12-08 | 2021-12-08 | Stepless pressure regulating backup liquid path for safety brake of elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216589343U true CN216589343U (en) | 2022-05-24 |
Family
ID=81611577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123076143.5U Active CN216589343U (en) | 2021-12-08 | 2021-12-08 | Stepless pressure regulating backup liquid path for safety brake of elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216589343U (en) |
-
2021
- 2021-12-08 CN CN202123076143.5U patent/CN216589343U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102030280B (en) | Mine-hoist constant deceleration safety braking system and braking method thereof | |
| CN110219836B (en) | Safety switching braking constant-speed-reduction hydraulic system and braking method for elevator | |
| CN201857238U (en) | Constant deceleration safety braking system for mine hoist | |
| CN103527536B (en) | Hydraulic motor speed regulating system and speed regulating method and hoisting equipment | |
| CN102701103B (en) | Safety brake and redundancy control system of mine hoist | |
| CN2897976Y (en) | Intelligent controller of hoisting brake for crane | |
| US11958718B2 (en) | Multi-channel impact-resistant intelligent-constant-deceleration hydraulic braking system | |
| CN203976236U (en) | Hydraulic control system and crane with same | |
| CN108217376B (en) | A kind of proportional pressure control valve perseverance deceleration safety arrestment redundant hydraulic station and its control method | |
| CN107806484B (en) | Braking system for permanent magnet direct drive mechanism, control method and gate opening and closing mechanism | |
| CN108249339B (en) | A kind of perseverance deceleration safety arrestment redundant hydraulic station and its control method | |
| CN216589343U (en) | Stepless pressure regulating backup liquid path for safety brake of elevator | |
| CN108238561B (en) | Safety arrestment series redundancy two-stage brake hydraulic station and its control method | |
| CN210565392U (en) | Safety conversion braking constant speed reduction hydraulic system of elevator | |
| CN203476861U (en) | Emergency power system and hoisting mechanism and hoisting equipment comprising same | |
| CN206232360U (en) | A kind of two-stage brake hydraulic station for distinguishing different loads operating mode | |
| CN202785434U (en) | Winch control device in open type hydraulic system for crane | |
| CN102275795B (en) | Constant decelerating braking conversion device | |
| CN108180187B (en) | safe braking series-parallel connection redundancy secondary braking hydraulic station and control method thereof | |
| CN114483296B (en) | Engine runaway prevention safety control system and method | |
| CN211004339U (en) | Multichannel anti-impact intelligent constant-deceleration hydraulic braking system | |
| CN204828087U (en) | Down sealing -tape machine disc brake hydraulic control system | |
| CN109896461B (en) | High-reliability and high-safety large-load hoister braking system and method | |
| CN105065343A (en) | Hydraulic control system and method for disc brake of descending adhesive tape machine | |
| CN220600110U (en) | Hydraulic station of double-backup constant-speed-reduction gate control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Shi Pengfei Inventor after: Jin Yingze Inventor after: Zhang Weizhu Inventor after: Jiang Guojun Inventor after: Bao Wannian Inventor after: Zhang Luowei Inventor after: Zhang Yujie Inventor after: Xu Changchun Inventor before: Shi Pengfei Inventor before: Jin Yingze Inventor before: Zhang Weizhu Inventor before: Jiang Guojun Inventor before: Bao Wannian Inventor before: Zhang Luowei Inventor before: Zhang Yujie Inventor before: Xu Changchun |