CN213707584U - Well axle sensing intelligence floodgate for hoist - Google Patents
Well axle sensing intelligence floodgate for hoist Download PDFInfo
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- CN213707584U CN213707584U CN202022637966.XU CN202022637966U CN213707584U CN 213707584 U CN213707584 U CN 213707584U CN 202022637966 U CN202022637966 U CN 202022637966U CN 213707584 U CN213707584 U CN 213707584U
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Abstract
A middle shaft sensing intelligent brake for a lifter comprises an outer shell, an intelligent brake cylinder body, a brake shoe pressing strip, a brake shoe, an adjusting nut, an oil cylinder, a piston, an oil cylinder cover, a tensioning bolt and a support sleeve; a middle shaft sensor assembly is arranged in the intelligent brake cylinder body, a disc spring is sleeved on the periphery of the middle shaft sensor assembly, and a disc spring pad is arranged between the disc spring and the oil cylinder; axis sensor assembly includes axis sensor overcoat, axis sensor core, disjunctor bridge, and two round holes of symmetrical processing on the periphery of axis sensor core form a sensor web sensitive to power in the centre of round hole, and strain gauge has been put to the equipartition on the sensor web, the utility model discloses axis sensing intelligence floodgate for the hoist can detect true braking positive pressure through axis sensor assembly when braking to the hoist, helps directly perceived quick understanding hoist braking force condition to can make judgement and adjustment rapidly, guarantee the braking safety of hoist.
Description
Technical Field
The utility model relates to a mine winder equipment on-the-spot safe operation, maintenance and control field specifically are axis sensing intelligence floodgate for hoist.
Background
The mine elevator is a key device for underground mining and transportation of metal ores and coal, the elevator is safe to operate, the safety and reliability of work braking and safe emergency braking of the whole system in the working process can be guaranteed only when the braking force of a braking system needs to be maintained within a safety limit, the key link of the braking system is a brake, and the brake of the elevator is provided with a common brake and a force monitoring type intelligent brake.
The method can not really reflect the real data of the braking force, and can not intuitively know whether the braking force of the brake is up to the standard or not by maintaining a numerical range by the opening gap to indirectly control the braking force of the brake in a fuzzy way.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a well axle sensing intelligence floodgate for hoist.
The utility model aims at adopting the following technical scheme to realize. According to the utility model provides a well axis sensing intelligence floodgate for hoist, including installing the shell body on intelligence floodgate brake seat, set up in the shell body and be sliding connection and the inside intelligence floodgate barrel that is equipped with the disc spring with the shell body, hug closely the brake shoe of the side-mounting of intelligence floodgate barrel, become an integrated brake shoe layering through the fastening of brake shoe housing head screw with intelligence floodgate barrel, adjusting nut with shell body afterbody threaded connection, the hydro-cylinder of installing in adjusting nut, the piston of installing in the hydro-cylinder, install the oil cylinder lid that the afterbody of adjusting nut is used for sealing hydro-cylinder and piston, the tensioning bolt of installing on the piston, install the support cover that is used for playing the supporting role to the tensioning bolt between tensioning bolt and piston; the supporting sleeve and the piston are isolated by an O-shaped ring and are in soft connection, and a first sealing ring and a second sealing ring which are used for preventing oil leakage and are in sliding contact are arranged between the piston and the oil cylinder;
a central shaft sensor assembly with one end provided with a cap head edge and the other end connected with a tension bolt through threads is installed in the intelligent brake cylinder body, a disc spring is further sleeved on the periphery of the central shaft sensor assembly, a disc spring pad used for supporting the compression force of the disc spring is arranged between the disc spring and the oil cylinder, one end of the disc spring abuts against the cap head edge, and the other end of the disc spring abuts against the disc spring pad;
the center shaft sensor assembly comprises a center shaft sensor outer sleeve, a tension bolt connecting screw thread used for being in threaded connection with a tension bolt is arranged on the center shaft sensor outer sleeve, a cavity, a connected bridge and installation cavities symmetrically arranged on two sides of the connected bridge are arranged in the center shaft sensor outer sleeve, a center shaft sensor core is arranged in the cavity, a sensor signal line perforation is arranged on the connected bridge, a sensor pressure resisting head is arranged on the outer side of one end, away from the connected bridge, of the center shaft sensor core, two round holes are symmetrically machined in the cylindrical surface of the center shaft sensor core, a sensor web sensitive to force is formed between the two round holes, at least one strain gauge is uniformly arranged on two surfaces of the sensor web, a circuit board used for amplifying and transmitting signals is arranged in the round holes of the center shaft sensor;
two installation cavities are symmetrically processed on the side face of the connected bridge, the hollow part of the sensor tensioning spring is penetrated by the middle shaft sensor tensioning screw and restrains the connected bridge and the sensor tensioning spring into a whole, a through hole for the middle shaft sensor tensioning screw to penetrate is arranged on the core of the middle shaft sensor, and the middle shaft sensor tensioning screw is installed on the intelligent brake cylinder body.
Preferably, the bottom of the intelligent brake cylinder body is provided with an annular sinking groove, and the edge part of the left cap head of the outer sleeve of the middle shaft sensor is partially embedded into the annular space of the sinking groove and keeps a gap with the bottom of the annular space.
Preferably, the gap has a size in the range of 0mm to 10 mm.
Preferably, a pressure-resistant pad used for bearing the positive braking pressure is arranged between the pressure-resistant head of the sensor and the intelligent brake cylinder body.
Preferably, the outer surface of the pressure resistant head of the sensor is planar or spherical.
Preferably, the outer surface of the pressure resistant pad is planar or spherical.
Preferably, a plurality of rotation stopping openings are symmetrically formed in the circumference of the maximum diameter of the cap edge, and rotation stopping screws of a middle shaft sensor assembly for preventing the middle shaft sensor and the intelligent brake cylinder from rotating relatively when the tensioning bolts are screwed down are installed in the rotation stopping openings.
Preferably, the rotation-stopping screw is a threaded set screw or a non-threaded set pin.
The utility model provides a pair of axis sensing intelligence floodgate for hoist has following advantage:
1. the utility model discloses can detect real braking positive pressure through axis sensor assembly when the lifting machine braking, provide a direct quantitative means for the judgement of lifting machine intelligence floodgate braking positive pressure, help directly perceived quick understanding lifting machine intelligence floodgate braking positive pressure condition to can make judgement and adjustment rapidly, guarantee the braking safety of lifting machine.
2. The utility model discloses a direct detection to the true braking positive pressure of brake floodgate and through the intelligent analysis of computer extend to the total braking torque of verifying under the lifting machine system running state of brake force of intelligence floodgate actual measurement in order to judge whether it accords with the relevant safety standard requirement that the country issued, have realistic meaning very much to mine operation equipment engineering practice.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention can be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are mentioned below, and the detailed description is given below with reference to the accompanying drawings.
Drawings
FIG. 1 is a front view of a hoist with a center shaft sensing intelligent brake as a braking component;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a front view of a center shaft sensing intelligent brake for a hoist;
FIG. 4 is a cross-sectional view taken at B-B of FIG. 3 (with the bottom bracket sensor assembly not shown in section);
FIG. 5 is a cross-sectional view taken at B-B of FIG. 3;
FIG. 6 is a perspective view of a medial axis sensing intelligent brake;
FIG. 7 is a schematic view of the medial axis sensing smart brake in another direction;
FIG. 8 is a front view of the smart brake cylinder body;
FIG. 9 is a cross-sectional view of the smart brake cylinder body;
FIG. 10 is a schematic view of the assembly of the smart brake cylinder body and the central axis sensor assembly;
FIG. 11 is a perspective cut-away view of the assembly of the smart brake cylinder body and the central sensor assembly;
FIG. 12 is a cross-sectional view of the bottom bracket sensor assembly;
FIG. 13 is a perspective cross-sectional view of the bottom bracket sensor assembly;
FIG. 14 is a front view of a bottom bracket sensor core;
FIG. 15 is a perspective schematic view of a bottom bracket sensor core;
FIG. 16 is a perspective cross-sectional view of the bottom bracket sensor cover in this embodiment
FIG. 17 is a view of the sense bridge of the bottom bracket sensor assembly.
[ reference numerals ]
I-elevator brake disc, II-middle shaft sensing intelligent brake, III-intelligent brake block, IV-elevator main shaft device bearing block, V-bearing block supporting beam, VI-main shaft device winding drum, VII-elevator steel wire rope, G-middle shaft sensor assembly,
1-outer shell, 2-brake shoe, 4-disc spring, 5-end cover, 6-oil cylinder, 7-piston, 8-tension bolt, 9-support sleeve, 10-first seal ring I, 11-second seal ring, 12-disc spring pad, 13-adjusting nut, 14-oil cylinder cover, 15-oil inlet channel, 16-brake shoe press bar, 17-brake shoe hold-down screw, 18-oil cylinder cover fixing screw, 19-middle shaft sensor jacket, 1901-cavity, 20-middle shaft sensor tensioning screw, 21-sensor tensioning spring, 22-middle shaft sensor core, 23-pressure pad, 26-rotation stop port, 27-middle shaft sensor assembly rotation stop screw, 28-middle shaft sensor assembly rotation stop screw hole, 29-tension bolt connecting screw thread, 32-cap edge, 33-sink groove, 34-intelligent brake cylinder tensioning screw hole, 35-intelligent brake cylinder, 36-strain gauge, 37-gap, 38-connecting bridge, 3801-installation cavity, 39-sensor signal line perforation, 40-sensor web plate and 41-sensor pressure resistance head.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined purpose, the following description will be made in detail with reference to the accompanying drawings and preferred examples.
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 description and simplification of description, but do not indicate or imply that the device or element referred to 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.
Referring to fig. 1 to 17, the present invention relates to a middle shaft sensing intelligent brake for a hoist, wherein a middle shaft sensing intelligent brake ii (hereinafter referred to as intelligent brake) is fixed on an intelligent brake seat iii, and the left and right sides of a hoist brake disc i are respectively clamped by the intelligent brake to be in a braking state.
Referring to fig. 3, 4, 5, 6 and 7, the intelligent brake ii includes an outer shell 1 installed on an intelligent brake seat iii, an intelligent brake cylinder 35 installed in the outer shell 1 and slidably connected to the outer shell and having a disc spring 4 inside, and a brake shoe 2 installed closely to the left outer plane of the intelligent brake cylinder, the brake shoe and the intelligent brake cylinder 35 are fastened into a whole by a brake shoe hold-down screw 17 and a brake shoe press strip 16, an adjusting nut 13 connected to the tail of the outer shell by a thread, and a middle axis sensor assembly G is installed in the intelligent brake cylinder.
An oil cylinder 6 is arranged in the adjusting nut, an oil cylinder cover 14 for sealing and fixing the oil cylinder is arranged at the tail part of the left side of the adjusting nut, an end cover 5 is arranged on the oil cylinder cover, the oil cylinder cover is fixedly arranged at the side surface of the oil cylinder 6 through an oil cylinder cover fixing screw 18 and is blocked at the left side of the tail part of the adjusting nut and is in rotary sliding contact with an adjusting nut 13, oil inlet and outlet oil of the oil cylinder is communicated with oil of a hydraulic station control pipeline through an oil inlet channel 15, a piston 7 in the oil cylinder is sealed in the oil cylinder through the oil cylinder cover and is in sliding connection in an oil cylinder cavity, the middle of the piston 7 is penetrated by a tensioning bolt 8, a supporting sleeve 9 for supporting the tensioning bolt is further arranged between the tensioning bolt and the piston, the supporting sleeve and the piston are isolated through an O-shaped ring and are in soft connection between, the tension bolt 8, the support sleeve 9, the piston 7, the middle shaft sensor assembly G and the intelligent brake cylinder body 35 are connected into a whole through the pretightening force of threaded connection between the tension bolt and the middle shaft sensor assembly G. A first sealing ring 10 and a second sealing ring 11 which are used for preventing oil leakage and are in sliding contact are further arranged between the piston and the oil cylinder, and the specific positions of the first sealing ring and the second sealing ring are shown in fig. 4.
Referring to fig. 4 to 13, a cap edge 32 is provided at the left end of the center shaft sensor assembly G, a tension bolt connecting screw thread 29 is processed at the middle part of the right end surface, the tension bolt connecting screw thread is in threaded connection with the tension bolt, a disc spring 4 is further sleeved on the periphery of the center shaft sensor assembly, the center shaft sensor assembly plays a guiding role when the disc spring is compressed or extended so as to prevent the disc spring from moving transversely, a disc spring pad 12 for supporting the compression force of the disc spring is installed at the right side of the group of disc springs, the disc spring pad is located between the disc spring and the oil cylinder and is in close contact with the disc spring and the oil cylinder respectively (see the specific position of the disc spring pad in fig. 4), the left side of the group of disc springs is pressed against the cap edge 32, two rotation stopping ports 26 are symmetrically provided on the circumference of the maximum diameter of the cap edge, the fixed positioning of the rotation trend between the center shaft sensor outer sleeve 19 and the intelligent brake cylinder is realized by a rotation stopping screw 27 (hereinafter, when the tension bolt 8 is connected with the screw thread 29 through the tension bolt to screw the central shaft sensor assembly G to bear torque, the central shaft sensor assembly and the intelligent brake cylinder body can be prevented from rotating relatively, and the rotation stopping screw 27 can be a positioning screw with screw threads according to needs or a positioning pin without screw threads according to needs. The bottom of the intelligent brake cylinder body is provided with an annular sinking groove 33 (please refer to fig. 8 and 9), the left cap head edge part of the middle shaft sensor outer sleeve 19 is partially embedded into the annular space of the sinking groove 33 and keeps a gap 37 with the bottom of the annular space, and the size range of the gap 37 is 0mm-10 mm.
A middle shaft sensor outer sleeve 19 (please refer to fig. 16) is arranged at the periphery of the middle shaft sensor assembly, a cavity 1901, a connecting bridge 38 and installation cavities 3801 symmetrically arranged at two sides of the connecting bridge 38 are arranged in the middle shaft sensor outer sleeve, the connecting bridge 38 and the middle shaft sensor outer sleeve 19 are of an integrated structure, a middle shaft sensor core 22 is arranged in the cavity 1901, a sensor signal line through hole is arranged on the connecting bridge 38, a sensor pressure resisting head 41 is arranged at the outer side of one end, away from the connecting bridge, of the middle shaft sensor core, please refer to fig. 12 to 15, in the embodiment, the middle shaft sensor core 22 is cylindrical, two circular holes are symmetrically processed on the cylindrical surface of the middle shaft sensor core, a sensor web 40 sensitive to force is formed between the two circular holes, at least one strain gauge 36 is uniformly arranged on two surfaces of the sensor web, in the embodiment, certainly, in other embodiments of the utility model, the number of the strain gauges can be set to 1 or more according to the needs, a circuit board for amplifying and transmitting signals is arranged in the round hole of the center shaft sensor core, the strain gauges are electrically connected with the circuit board, the strain gauge data measured by the strain gauges is used for transmitting remote signals out of the intelligent gate through the perforation of the sensor signal line by the circuit board for the comprehensive analysis and display of the peripheral computer system; the right plane of the center shaft sensor core is in complete plane contact with the left plane of the connecting bridge.
Two counter bores are symmetrically processed on the right circular plane of the connecting bridge 38 to serve as installation cavities 3801, the hollow part of the sensor tensioning spring is penetrated through by a middle shaft sensor tensioning screw 20, a through hole for the middle shaft sensor tensioning screw 20 to penetrate through is formed in the core of the middle shaft sensor, and the tensioning screw penetrating through the core of the sensor is installed in the intelligent brake cylinder tensioning screw hole 34 in a threaded mode.
The bottom center position of the intelligent brake cylinder 35 is provided with a pressure resistant pad 23, the pressure resistant pad is arranged between the sensor pressure resistant head 41 and the bottom of the intelligent brake cylinder and is used for bearing the braking positive pressure transmitted from the brake shoe 2 to the center shaft sensor core 22, the outer surface of the sensor pressure resistant head 41 is a plane, a spherical surface or other arc-shaped curved surfaces, and the outer surface of the pressure resistant pad 23 is a plane, a spherical surface or other arc-shaped curved surfaces.
Of course, in other embodiments of the present invention, the pressure resistant pad may not be provided as needed.
The working process is as follows:
in order to open the intelligent brake and enable the brake shoe to leave the brake disc I of the elevator, hydraulic oil with certain pressure is provided by an elevator hydraulic station and enters an inner cavity of an oil cylinder 6 from an oil inlet channel 15 to push a piston 7 to move towards the right, the piston drives a support sleeve 9, a tension bolt 8 and a middle shaft sensor assembly G to drive an intelligent brake cylinder body 35 to move towards the right and compress a disc spring 4 to accumulate energy, a disc spring pad 12 has a limiting effect on the total compression deformation of the disc spring, the middle shaft sensor assembly can guide the disc spring to compress or extend along the longitudinal axis direction of the middle shaft sensor assembly at the center of the disc spring at the same time to prevent the disc spring from moving transversely in a dislocation way in the moving process, and the accumulated force of the compression deformation of the disc spring is used as the condition of forming a braking positive pressure between the brake shoe and the brake disc during closing so as to form the condition of braking.
When the intelligent brake is switched on, the brake shoe releases positive pressure to the brake disc of the elevator so as to form friction torque to brake the elevator, pressure oil in the inner cavity of the oil cylinder is discharged into an oil tank of a hydraulic station through an oil inlet channel, the disc spring rebounds under the action of deformation accumulation force at the moment, the intelligent brake cylinder body, the brake shoe, the middle shaft sensor assembly, the tensioning bolt and the piston are driven to slide in the outer shell to move to the left, the brake shoe is tightly attached to the brake disc and applies braking positive pressure to the brake disc, and the friction force is generated under the action of the friction coefficient so that the brake shoe forms braking friction torque to the rotating brake disc, so that the elevator in operation is braked.
When a brake shoe applies a braking positive pressure to the lateral surface of a brake disc, according to a statics law that the magnitude of an acting force and the reacting force are equal and the direction is opposite, the reacting force of the brake disc to the brake shoe is transmitted to a sensor pressure resisting head 41 of a central shaft sensor core 22 in a central shaft sensor assembly G through the brake shoe and a pressure resisting pad 23 on an intelligent brake cylinder body, then the reacting force is transmitted to a connecting bridge of a sensor jacket of the central shaft sensor assembly from the right side end face of the central shaft sensor core, then the reacting force is transmitted to an oil cylinder 6 through a cap head edge 32 of the central shaft sensor jacket 19 and then sequentially transmitted to an adjusting nut 13 through a disc spring 4 and a disc spring pad 12, the adjusting nut 13 is driven by the oil cylinder to form a trend of moving rightwards, the braking positive pressure is transmitted to an outer shell 1 through a thread of the adjusting nut, then the force is transmitted to a vertical plate of an intelligent brake seat III, and then the intelligent brake seat, when the braking positive pressure of the intelligent brake is transmitted to the middle shaft sensor core 22, the real load is sensed and then converted into an electric signal to be transmitted to the computer.
When the intelligent brake brakes the brake disc, the elastic force accumulated by the disc spring is released when the intelligent brake is opened in advance, and the pressure borne by the brake disc is the brake positive pressure, as shown in fig. 5, the positive pressure transmission path is as follows:
when pressure oil in an inner cavity formed between the piston and the oil cylinder is discharged to an oil tank of a hydraulic station, the piston moves leftwards, the disc spring is pressed tightly on the cap head edge 32 under the action of accumulated elasticity in advance, the end surface on the left side of the middle shaft sensor jacket and the lower sunken groove 33 of the intelligent brake cylinder body are in a non-contact state and have a gap 37, just because of the gap 37, the accumulated disc spring elasticity cannot be transmitted to the bottom of the intelligent brake cylinder body from the annular end surface on the left side of the middle shaft sensor jacket 19, but the disc spring elasticity is transmitted to the end surface on the right side of the middle shaft sensor core 22 through the end surface on the left side of the connecting bridge 38, the pressure resisting head 41 on the left side of the middle shaft sensor core is in close contact with the pressure resisting pad 23 and is transmitted to the contact surface of the intelligent brake cylinder body 35 and the brake shoe 2, then the brake shoe applies braking, the force sensitive sensor web 40 arranged in the center of the central axis sensor core is a force sensitive body, a strain gauge arranged on the sensor web converts the stress strain into an electric signal, the signal is amplified by an amplifier plate arranged in the circular hole inner cavity, and the signal is sent out from the sensor signal wire through hole 39 to be comprehensively analyzed and displayed by a peripheral computer system.
When the intelligent brake is opened, the brake shoe leaves the brake disc, because pressure oil enters the cylinder cavity from the oil inlet channel 15 to drive the piston together with the support sleeve 9, the tensioning bolt 8 and the middle shaft sensor outer sleeve 19 to move rightwards, at the moment, the cap head edge 32 applies pressure to the disc spring which is tightly contacted with the disc spring and pushes the disc spring to move rightwards to compress the disc spring, when the intelligent brake is opened, the middle shaft sensor outer sleeve 19 moves rightwards to connect the connecting bridge 38 to push the sensor tensioning spring 21 to move rightwards, because the threads at the left end of the two sensor tensioning screws 20 are screwed into the two intelligent brake cylinder tensioning screw holes 34 in advance and certain pre-tightening force is applied to the two tensioning springs 21, the connecting bridge 38, the sensor tensioning spring 21 and the middle shaft sensor tensioning screw 20 are fixedly restrained into an integrated structure, when the middle shaft sensor outer sleeve connecting bridge 38 moves rightwards, the sensor tensioning spring 21 is pushed to move rightwards to drive the cap head Because the threaded part of the middle shaft sensor tensioning screw 20 is screwed into the intelligent brake cylinder tensioning screw hole 34 of the intelligent brake cylinder 35 with a certain torque to form a fixed shape, the intelligent brake cylinder 35 is driven to move towards the right side, the brake shoe leaves the brake disc along with the intelligent brake cylinder tensioning screw, so that the brake disc braking positive pressure is removed to form an open brake state, the stress of the brake shoe is zero, the force transmitted to the sensor core by the pressure pad is also zero, and the elevator normally enters a lifting working procedure.
The pretightening force of the pretightening state of the sensor tension spring 21 designed in the middle shaft sensor assembly G provides guarantee for driving the intelligent brake cylinder 35 to move towards the right side for opening the brake and sufficiently overcoming the sliding resistance between the outer circumferential surface of the cylinder and the inner circumferential surface of the outer shell 1.
Referring to FIGS. 14 and 17, the driving voltage UInput deviceThe working voltage is input to the bridge circuit, and the stress signal induced by the strain gauge circuit arranged in the core of the middle shaft sensor is converted into delta U by the circuitOutput ofAnd the voltage variable quantity is output and sent to an integrated amplifying circuit arranged in the core of the middle shaft sensor for processing, and then output and remotely transmitted to a peripheral electric control system for centralized control application. The central position of the sensor web is provided with strain gauges on two surfaces, the classical situation is that each surface is provided with four strain gauges, and the strain gauges R1, R2, R3 and R4 are connected into an integrated circuit processing board arranged in a round hole of the center shaft sensor core 22 according to the circuit connection shown in figure 17.
The conversion of the strain signal into an electrical signal output is formulated as follows:
the wire grid resistance value of the strain gauge is expressed as R, DeltaR is the resistance variation, and when the bonding position of the strain gauge generates small strain due to stress, the output voltage variation DeltaU converted by the bridge circuitOutput ofAnd an input excitation voltage UInput deviceHas a relation equation Delta UOutput of/UInput deviceIn general, the resistance of each strain gauge is substantially equal (Δ R1/R1 +/Δ R3/R3-/Δ R2/R2- Δ R4/R4)/4, and R1 ═ R2 ═ R3 ═ R4, the above expression is Δ UOutput of/UInput deviceUnder the condition of stressed strain of a single strain gauge (delta R1 plus delta R3-delta R2-delta R4)/(4R), the change rate of the resistance value of the single strain gauge has a relation equation with the strain quantity of the strain gauge
Delta R/R ═ K epsilon, where K is the coefficient of sensitivity of the strain gage, this is the strain gage bulk materialThe intrinsic constants are generally K ═ 2 (dimensionless), R is the strain gauge resistance value (ohm), Δ R is the strain gauge resistance value change amount (ohm), and ∈ is the strain gauge (dimensionless) at the strain gauge attachment position. The output electrical signal of the bridge (i.e. the variation DeltaU of the output voltage of the bridge)Output of) The rate of change with respect to the input excitation voltage is calculated by the following equationOutput of/UInput deviceK (epsilon 1+ epsilon 3-epsilon 2-epsilon 4)/4, and the variation quantity delta U of the output voltage of the bridgeOutput ofWith respect to the input excitation voltage UInput deviceThe ratio value of the strain gauge is related to the mechanical physical quantity value by means of the sensitive reaction of the strain gauge to stress, the physical quantity of force is indirectly expressed by the electric quantity value through the technical wiring of the electric bridge to the layout of each strain gauge, and therefore, the method is provided for computability, readability and visualization through the digital processing of the electric quantity by a computer. The strain gauge signal detection and conversion technology is the category of the existing mature technology and is not described in detail.
Every brake of lifting machine is a brake unit promptly, and the braking moment of every brake unit is brake positive pressure and brake shoe coefficient of friction and brake radius product, and the total moment of braking of lifting machine system is synthesized the decision by all brake positive pressures of the whole brakes of arresting gear system configuration, and every brake is the contribution cell cube of total braking moment promptly, the utility model discloses a real-time on-line monitoring that axis sensing intelligence floodgate alright realize brake positive pressure to every brake can solve lifting machine total braking moment monitoring actual value accuracy promptly and also be the basic condition who solves computer integrated analysis system security parameter, creates the condition for the intelligent floodgate analysis of lifting machine security.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any person skilled in the art can make any simple modification, equivalent change and modification to the above embodiments according to the technical spirit of the present invention without departing from the technical scope of the present invention.
Claims (8)
1. A middle shaft sensing intelligent brake for a lifter comprises an outer shell arranged on an intelligent brake seat, an intelligent brake cylinder body which is arranged in the outer shell, is in sliding connection with the outer shell and is internally provided with a disc spring, a brake shoe which is tightly attached to the side surface of the intelligent brake cylinder body, a brake shoe pressing strip which is fastened with the intelligent brake cylinder body into a whole through a brake shoe pressing screw, an adjusting nut in threaded connection with the tail of the outer shell, an oil cylinder arranged in the adjusting nut, a piston arranged in the oil cylinder, an oil cylinder cover which is arranged at the tail of the adjusting nut and used for sealing the oil cylinder and the piston, a tensioning bolt arranged on the piston, and a support sleeve which is arranged between the tensioning bolt and the piston and used for supporting the tensioning bolt; the supporting sleeve and the piston are isolated by an O-shaped ring and are in soft connection, and a first sealing ring and a second sealing ring which are used for preventing oil leakage and are in sliding contact are arranged between the piston and the oil cylinder;
the method is characterized in that: a central shaft sensor assembly with one end provided with a cap head edge and the other end connected with a tension bolt through threads is installed in the intelligent brake cylinder body, a disc spring is further sleeved on the periphery of the central shaft sensor assembly, a disc spring pad used for supporting the compression force of the disc spring is arranged between the disc spring and the oil cylinder, one end of the disc spring abuts against the cap head edge, and the other end of the disc spring abuts against the disc spring pad;
the center shaft sensor assembly comprises a center shaft sensor outer sleeve, a tension bolt connecting screw thread used for being in threaded connection with a tension bolt is arranged on the center shaft sensor outer sleeve, a cavity, a connected bridge and installation cavities symmetrically arranged on two sides of the connected bridge are arranged in the center shaft sensor outer sleeve, a center shaft sensor core is arranged in the cavity, a sensor signal line perforation is arranged on the connected bridge, a sensor pressure resisting head is arranged on the outer side of one end, away from the connected bridge, of the center shaft sensor core, two round holes are symmetrically machined in the cylindrical surface of the center shaft sensor core, a sensor web sensitive to force is formed between the two round holes, at least one strain gauge is uniformly arranged on two surfaces of the sensor web, a circuit board used for amplifying and transmitting signals is arranged in the round holes of the center shaft sensor;
two installation cavities are symmetrically processed on the side face of the connected bridge, the hollow part of the sensor tensioning spring is penetrated by the middle shaft sensor tensioning screw and restrains the connected bridge and the sensor tensioning spring into a whole, a through hole for the middle shaft sensor tensioning screw to penetrate is arranged on the core of the middle shaft sensor, and the middle shaft sensor tensioning screw is installed on the intelligent brake cylinder body.
2. The central shaft sensing intelligent brake for the elevator as claimed in claim 1, wherein: the bottom of the intelligent brake cylinder body is provided with an annular sinking groove, and the edge part of the left cap head of the outer sleeve of the middle shaft sensor is embedded into the annular space of the sinking groove and keeps a gap with the bottom of the annular space.
3. The central shaft sensing intelligent brake for the elevator as claimed in claim 2, wherein: the size of the gap ranges from 0mm to 10 mm.
4. The central shaft sensing intelligent brake for the elevator as claimed in claim 1, wherein: and a pressure resistant pad for bearing the positive pressure of braking is arranged between the pressure resistant head of the sensor and the intelligent brake cylinder body.
5. The central shaft sensing intelligent brake for the elevator as claimed in claim 4, wherein: the outer surface of the pressure resisting head of the sensor is plane or spherical.
6. The central shaft sensing intelligent brake for the elevator as claimed in claim 4, wherein: the outer surface of the pressure resistant pad is plane or spherical.
7. The central shaft sensing intelligent brake for the elevator as claimed in claim 1, wherein: a plurality of rotation stopping openings are symmetrically formed in the circumference of the maximum diameter of the cap edge, and rotation stopping screws of a center shaft sensor assembly for preventing the center shaft sensor and the intelligent brake cylinder from rotating relatively when the tensioning bolts are screwed down are installed in the rotation stopping openings.
8. The central shaft sensing intelligent brake for the elevator as claimed in claim 7, wherein: the rotation stopping screw is a positioning screw with screw threads or a positioning pin without screw threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022637966.XU CN213707584U (en) | 2020-11-13 | 2020-11-13 | Well axle sensing intelligence floodgate for hoist |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022637966.XU CN213707584U (en) | 2020-11-13 | 2020-11-13 | Well axle sensing intelligence floodgate for hoist |
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| CN213707584U true CN213707584U (en) | 2021-07-16 |
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| CN202022637966.XU Active CN213707584U (en) | 2020-11-13 | 2020-11-13 | Well axle sensing intelligence floodgate for hoist |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114314408A (en) * | 2021-12-31 | 2022-04-12 | 洛阳宏信重型机械有限公司 | Cylinder sensing intelligent gate for hoister |
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2020
- 2020-11-13 CN CN202022637966.XU patent/CN213707584U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114314408A (en) * | 2021-12-31 | 2022-04-12 | 洛阳宏信重型机械有限公司 | Cylinder sensing intelligent gate for hoister |
| CN114314408B (en) * | 2021-12-31 | 2024-05-10 | 洛阳宏信重型机械有限公司 | Barrel sensing intelligent brake for elevator |
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