CN113503329A - State detection equipment for hydraulic push rod brake - Google Patents
State detection equipment for hydraulic push rod brake Download PDFInfo
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- CN113503329A CN113503329A CN202110792228.9A CN202110792228A CN113503329A CN 113503329 A CN113503329 A CN 113503329A CN 202110792228 A CN202110792228 A CN 202110792228A CN 113503329 A CN113503329 A CN 113503329A
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- 238000001514 detection method Methods 0.000 title claims abstract description 137
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 238000005299 abrasion Methods 0.000 claims description 34
- 238000009434 installation Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000001960 triggered effect Effects 0.000 description 12
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- 238000013461 design Methods 0.000 description 5
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
- F16D66/028—Apparatus for indicating wear using electrical detection or indication means with non-electrical sensors or signal transmission, e.g. magnetic, optical
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/003—Position, angle or speed
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Abstract
The invention provides a hydraulic push rod brake state detection device, which relates to the field of brake detection devices and comprises a shell and a pull rod, wherein the pull rod penetrates through a pull rod mounting hole of the shell, the tail part of the pull rod is connected with a steel wire rope, two steel wire rope pulley shafts are mounted on the inner side wall of the shell, each steel wire rope pulley shaft is rotatably mounted with a steel wire rope pulley, one end of the steel wire rope, which is far away from the pull rod, is connected with a tension spring, the shell is provided with a tension spring fixing column, and the free end of the tension spring is fixed on the tension spring fixing column. Effectively reduced maintenance and maintenance personal's work load, the practicality is high.
Description
Technical Field
The invention relates to the field of brake detection equipment, in particular to hydraulic push rod brake state detection equipment.
Background
Under the background of vigorous popularization of 4.0 industries and on the premise of wide popularization of energy conservation, emission reduction, personnel reduction and efficiency improvement, the automatic crane is more and more put into use, and the crane has wide application in various industrial fields, particularly in the metallurgical industry and is indispensable equipment. The crane plays a very important role in the metallurgical industry, so that the automatic transformation, popularization and application of the crane are more vigorous in the metallurgical industry.
The automatic transformation and popularization of the crane are realized based on the transformation and updating of software and hardware of the crane body. Among them, in each running mechanism of hoist, the running state detection of stopper is especially important, and the running state of braking will be the operation safety of direct relation hoist. The states of the brake mainly comprise an opening state, a closing state and a brake shoe abrasion state, whether the next operation of the crane can be normally executed or not is judged according to the states of the brake, and if the abnormality occurs, the operation of the crane is immediately stopped, so that the safety of equipment is ensured. The present crane's stopper is hydraulic push rod stopper for the vast majority, and only few the comparatively long-lived hoist of the age do not dispose hydraulic push rod stopper, and the operating device that adopts trinity motor in addition a minority has adopted electromagnet brake. At present, in the automatic implementation process of the crane, the opening and closing detection of the brake is basically configured, and the abrasion detection of the brake is basically configured only in the metallurgical crane. The state detection means of the hydraulic push rod brake basically comprises the steps of additionally arranging a collision ruler and a detection limit on a transmission mechanism of the hydraulic push rod brake to realize the state detection of the brake, wherein the adopted limit basically comprises a mechanical limit and an induction limit. The stroke of the brake shoe of the hydraulic push rod brake is usually very small, the running distance of the brake shoe is only several millimeters, and the hydraulic push rod brake adopts a structure of a labor-saving lever, so the stroke of the push rod is slightly larger, but only has the stroke of several centimeters, and the mechanical limiting self triggering stroke is also several centimeters, so as to be used for detecting the opening and closing state of the brake, the requirements can be basically met, but the reliability is not very high, the field adjustment is very difficult, the false operation often occurs in the use process, or the condition of incapability of acting is avoided, and therefore the detection failure is caused. And machinery is spacing just can't reach the operation requirement far away as brake shoe wearing and tearing detection, because the wearing and tearing of brake shoe indicate that brake shoe thickness wearing and tearing have arrived the certain degree, usually about 5 millimeters, even reflect the stroke change of push rod end also only about 1 centimetre, hardly make the spacing reliable action of machinery, so also can't detect the change of this state, so brake shoe wearing and tearing adopt induction type spacing usually, the spacing diameter of response has 10 millimeters at present, it originally shelters from about half promptly to shelter from about 5 millimeters and can trigger the spacing action of response, consequently, the spacing requirement that can satisfy brake shoe wearing and tearing detection of response, but the timing is still difficult, the reliable degree is also not very high. The response is spacing to detect spacingly as the switching of stopper, can satisfy the operation requirement basically after the design of taking care of with careful timing, but follow-up maintenance work load is still very big, because the wearing and tearing of mechanical shock and brake lining, spacing action range is constantly changing, thereby cause the problem that just need readjustment after using a period, and spacing timing is difficult to accomplish fast, the timing just need open and close the stopper many times repeatedly once usually, and observe just can ensure spacing degree of reliability through a period, so also influence maintainer's work efficiency very much, cause the waste of time.
The main contradictions that the reliability of state detection limit of the hydraulic push rod brake is low and the adjustment is difficult are that firstly, the detection stroke of the limit is short, the open-close detection is basically about 3 cm, the stroke of the abrasion detection is basically within 1 cm, secondly, the open-close detection limit is in the subsequent application, the detection stroke will become larger along with the abrasion of the brake shoe, taking the stroke of a new brake shoe as 3 cm as an example, the action interval is 0-3 cm, and after a period of application, the closed position of the hydraulic push rod will sink continuously along with the abrasion of the brake shoe, but the maximum stroke of the push rod is still maintained when the brake is opened, so that the interval of the opening and closing actions of the brake can be changed to-0.5-3 cm by referring to the coordinate system when a new brake shoe is opened, and at the end of the service life of the brake shoe, the interval of the opening and closing actions becomes a coordinate range of-1 to 3 centimeters. The coordinate of the action interval of the hydraulic push rod brake is constantly changed along with continuous use, so that the state detection limit of the hydraulic push rod brake is difficult to work stably and reliably for a long time by the current detection scheme, the current detection means of the collision ruler and the limit cannot adapt to the working condition, and the automatic use requirement can be met only through careful adjustment and later maintenance. In addition, the existing detection means cannot be realized, the existing opening and closing detection mode only can ensure the action detection of the brake but cannot ensure the stroke length detection, and the existing state detection means of all the brakes do not have the closing state detection of the brake, because the stroke of the brake can be continuously changed along with the abrasion of the brake, so that the position of the closing state is continuously changed, the effectiveness of the closing detection cannot be ensured for a long time, and the closing detection can be realized only by frequent adjustment, but the complexity of maintenance is further increased, and the closing detection cannot be accepted by users. In order to adapt to the constantly changing stroke of the hydraulic push rod brake, the opening detection limit is adjusted to act at the initial section of the stroke, and the stroke of the impact ruler is longer than the stroke, so that the limit can still be ensured to act when the coordinate in the stroke interval is constantly reduced.
Disclosure of Invention
The present invention aims to provide a hydraulic push rod brake state detection device to solve the above technical problems.
In order to solve the technical problems, the invention adopts the following technical scheme: the hydraulic push rod brake state detection equipment comprises a shell and a pull rod, wherein the pull rod penetrates through a pull rod mounting hole of the shell, the tail part of the pull rod is connected with a steel wire rope, two steel wire rope pulley shafts are mounted on the inner side wall of the shell, each steel wire rope pulley shaft is rotatably provided with a steel wire rope pulley, the steel wire rope penetrates through the two steel wire rope pulleys, one end, away from the pull rod, of the steel wire rope is connected with a tension spring, one side, close to the pull rod mounting hole, of the shell is provided with a tension spring fixing column, and the free end of the tension spring is fixed on the tension spring fixing column;
a wear detection sliding block is fixedly arranged on the steel wire rope close to the pull rod, the lower end of the wear detection sliding block is movably arranged in a wear detection sliding groove, the wear detection sliding groove is fixedly arranged on the inner side of the shell, an opening and closing detection sliding block is arranged on the steel wire rope close to the tension spring, an opening and closing detection sliding groove is arranged at the lower end of the opening and closing detection sliding block, an adjustment sliding groove bottom plate is arranged between the wear detection sliding groove and the opening and closing detection sliding groove, a wear adjustment sliding groove and an opening and closing adjustment sliding groove are processed on the adjustment sliding groove bottom plate, a wear adjustment sliding block is arranged in the wear adjustment sliding groove, and an opening adjustment sliding block and a closing adjustment sliding block are arranged in the opening and closing adjustment sliding groove; the abrasion adjusting slide block, the opening adjusting slide block and the closing adjusting slide block are respectively provided with a photoelectric sensor;
the left side that the inboard is located the wire rope pulley of casing is provided with control circuit board, installs the relay on the control circuit board, the casing is close to and installs the electrical connector on the lateral wall of control circuit board, and with relay electric connection.
Preferably, the opening adjusting slide block and the closing adjusting slide block are fastened through fastening screw holes, and the two adjusting slide blocks are tightly connected with the adjusting chute bottom plate and cannot slide after being fastened.
Preferably, the abrasion adjusting sliding block is fastened through a fastening screw hole, and the abrasion adjusting sliding block is tightly connected with the adjusting sliding groove bottom plate and cannot slide after being fastened.
Preferably, the adjusting chute bottom plate is fixedly installed at the bottom of the shell through an installation hole.
Preferably, the abrasion detection sliding block comprises an upper sliding block and a lower sliding block, a trigger plate is arranged on the upper sliding block, two fastening screw holes are machined in the upper sliding block and the lower sliding block, the fastening screw holes of the upper sliding block and the fastening screw holes of the lower sliding block are in one-to-one correspondence, and a groove with a small circular arc is machined in the lower surface of the upper sliding block and the upper surface of the lower sliding block.
Preferably, the opening and closing detection sliding block comprises an upper sliding block and a lower sliding block, a trigger plate is arranged on the upper sliding block, a square groove is machined in the middle of the upper sliding block and the lower sliding block, and an upper pressing wheel and a lower pressing wheel are respectively installed inside the square groove.
Preferably, wearing and tearing adjustment slider includes photoelectric sensor and trapezoidal slider main part, the upper end of trapezoidal slider main part is provided with the fastening screw, open adjustment slider and include photoelectric sensor and trapezoidal slider main part, photoelectric sensor installation and trapezoidal slider main part upper surface one side, trapezoidal slider main part opposite side processing fastening screw, limiting plate need be processed to trapezoidal slider main part upper surface.
Preferably, close the adjustment slider and include photoelectric sensor and trapezoidal slider main part, the limiting plate is installed to the upper end of trapezoidal slider main part.
Preferably, the closing adjusting slider is a left mirror body and a right mirror body of the opening adjusting slider, and the size, the material and the assembly mode of the closing adjusting slider are the same as those of the opening adjusting slider.
Preferably, the bottom plate of the adjusting chute is a flat steel plate with the thickness of 5 mm, trapezoidal chutes are symmetrically processed on two sides of the bottom plate of the adjusting chute, the trapezoidal chutes are respectively a wear detection chute and an opening and closing detection chute, and a mounting hole is processed in the middle of the bottom plate of the adjusting chute.
The invention has the beneficial effects that:
through reasonable design, the invention simultaneously realizes the opening state detection, closing state detection, brake shoe abrasion state detection and brake stroke detection of the hydraulic push rod brake stably and reliably. The problems of difficult limiting adjustment and calibration and long adjustment time at present can be solved through reasonable design, the adjustment and calibration can be basically kept for a long time after one adjustment and calibration, and even the adjustment and calibration can be basically not carried out again under the condition of reliable limiting installation;
the control circuit board is arranged and used for collecting the electric signal of each photoelectric sensor and converting the electric signal into the on-off state of the relay, and the on-off state of the relay is led out of the control circuit board through the electric connector, so that an external application circuit can collect the working state of the brake detected by the control circuit board, and the brake protection function of the crane is realized.
Drawings
FIG. 1 is a diagram of a limit state when the brake of the present invention is normally closed;
FIG. 2 is a schematic view of the present invention in a wear-triggered operating condition;
FIG. 3 is a schematic view of the brake of the present invention in an open state;
FIG. 4 is a schematic view of the housing structure of the present invention;
FIG. 5 is a schematic view of a wear detection slide according to the present invention;
FIG. 6 is a schematic view of the structure of the opening/closing detection slider according to the present invention;
FIG. 7 is a schematic view of a wear adjustment slider according to the present invention;
FIG. 8 is a schematic view of a closing adjustment slider according to the present invention;
FIG. 9 is a schematic view of the structure of the bottom plate of the adjusting chute according to the present invention.
Reference numerals: 1. a housing; 2. a pull rod; 3. a wire rope; 4. a wire rope pulley shaft; 5. a wire rope pulley; 6. a tension spring; 7. a tension spring fixing column; 8. a wear detection slide; 9. a wear detection chute; 10. an open/close detection slider; 11. opening and closing the detection chute; 12. adjusting the chute bottom plate; 13. a wear adjustment chute; 14. opening and closing the adjusting chute; 15. a wear adjustment slide; 16. opening the adjusting slide block; 17. closing the adjusting slide block; 18. a control circuit board; 19. a relay; 20. an electrical connector.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood, the invention is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.
Specific embodiments of the present invention are described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1-9, a hydraulic push rod brake state detection device includes a housing 1 and a pull rod 2, the pull rod 2 passes through a pull rod mounting hole of the housing 1, a steel wire rope 3 is connected to a tail portion of the pull rod 2, two steel wire rope pulley shafts 4 are mounted on an inner side wall of the housing 1, a steel wire rope pulley 5 is rotatably mounted on each steel wire rope pulley shaft 4, the steel wire rope 3 passes through the two steel wire rope pulleys 5, a tension spring 6 is connected to one end of the steel wire rope 3 away from the pull rod 2, a tension spring fixing column 7 is arranged on one side of the housing 1 close to the pull rod mounting hole, and a free end of the tension spring 6 is fixed on the tension spring fixing column 7;
a wear detection slide block 8 is fixedly arranged on the position, close to the pull rod 2, of the steel wire rope 3, the lower end of the wear detection slide block 8 is movably arranged in a wear detection slide groove 9, the wear detection slide groove 9 is fixedly arranged on the inner side of the shell 1, an opening and closing detection slide block 10 is arranged on the position, close to the tension spring 6, of the steel wire rope 3, an opening and closing detection slide groove 11 is arranged at the lower end of the opening and closing detection slide block 10, an adjusting slide groove bottom plate 12 is arranged between the wear detection slide groove 9 and the opening and closing detection slide groove 11, a wear adjusting slide groove 13 and an opening and closing adjusting slide groove 14 are processed on the adjusting slide groove bottom plate 12, a wear adjusting slide block 15 is arranged inside the wear adjusting slide groove 13, and an opening adjusting slide block 16 and a closing adjusting slide block 17 are arranged in the opening and closing adjusting slide groove 14; a photoelectric sensor is arranged on each of the abrasion adjusting slide block 15, the opening adjusting slide block 16 and the closing adjusting slide block 17;
the left side that the inboard is located wire rope pulley 5 of casing 1 is provided with control circuit board 18, installs relay 19 on the control circuit board 18, installs electrical connector 20 on the lateral wall that casing 1 is close to control circuit board 18, and with relay 19 electric connection.
The abrasion detection sliding block 8 comprises an upper sliding block and a lower sliding block, a trigger plate is arranged on the upper sliding block, two fastening screw holes are machined in the upper sliding block and the lower sliding block, the fastening screw holes of the upper sliding block and the fastening screw holes of the lower sliding block are in one-to-one correspondence, and grooves of a small arc are machined in the lower surface of the upper sliding block and the upper surface of the lower sliding block.
The opening and closing detection slide block 10 comprises an upper slide block and a lower slide block, a trigger plate is arranged on the upper slide block, a square groove is machined in the middle of the upper slide block and the lower slide block, and an upper pressing wheel and a lower pressing wheel are respectively installed inside the square groove.
Wear and tear adjustment slider 15 includes photoelectric sensor and trapezoidal slider main part, and the upper end of trapezoidal slider main part is provided with the fastening screw, opens adjustment slider and includes photoelectric sensor and trapezoidal slider main part, photoelectric sensor installation and trapezoidal slider main part upper surface one side, and trapezoidal slider main part opposite side processing fastening screw, limiting plate need be processed to trapezoidal slider main part upper surface.
The closing adjustment slider 17 comprises a photoelectric sensor and a trapezoidal slider main body, and a limiting plate is installed at the upper end of the trapezoidal slider main body.
The adjusting chute bottom plate 12 is a flat steel plate with the thickness of 5 mm, trapezoidal chutes are symmetrically processed on two sides, namely a wear detection chute 9 and an opening and closing detection chute 11, and a mounting hole is processed in the middle of the adjusting chute bottom plate.
The working principle is as follows:
the invention realizes the detection of three states of the hydraulic push rod brake through a reasonably designed mechanical transmission structure.
The displacement of the hydraulic push rod brake is transmitted to the interior of the invention by a pull rod 2 with a pull ring as the external transmission connecting part of the invention. The pull rod 2 drives the steel wire rope 3 connected with the tail end of the pull rod to move, the tail end of the steel wire rope 3 is connected with the tension spring 6, and the steel wire rope is reasonably wound through the two steel wire rope pulleys 5 to realize the follow-up with the pull rod 2, so that the two detection sliding blocks connected to the steel wire rope 3 are driven to move. The two detection sliders are an opening/closing detection slider 10 and a wear detection slider 8, respectively. The two sliding blocks are both provided with trigger plates, so that the opening state detection, the closing state detection and the abrasion state detection of the brake can be realized. In order to realize the state detection, the invention designs three adjusting sliders which are respectively a wear adjusting slider 15, an opening adjusting slider 16 and a closing adjusting slider 17, wherein each adjusting slider is provided with a photoelectric sensor, and when a triggering plate of the detecting slider triggers the photoelectric sensor on the adjusting slider, the photoelectric sensor is triggered to act to send out an electric signal, so that the working state of the brake is detected. The abrasion detection sliding block 8 triggers the abrasion adjustment sliding block 15 to realize abrasion state detection, and the brake shoe abrasion state detection of the hydraulic push rod brake can be effectively realized through reasonable adjustment of the abrasion adjustment sliding block 15. The opening and closing detection slide block 10 respectively triggers the opening adjustment slide block 16 and the closing adjustment slide block 17 under different states of the brake, thereby realizing the detection of the opening state and the detection of the closing state of the brake, the opening adjustment slide block 16 is opened through reasonable adjustment and calibration, the position of the closing adjustment slide block 17 not only can effectively realize the detection of the opening state and the detection of the closing state of the hydraulic push rod brake, but also can effectively detect the interval of the opening and closing operation of the hydraulic push rod brake, the photoelectric sensor on the adjustment slide block can be triggered only in the effective opening and closing interval of the hydraulic push rod brake, the action of the sensor can not be triggered when the stroke is insufficient, thereby ensuring that the detection at each time is effective and reliable.
The control circuit board 18 is used for collecting the electric signal of each photoelectric sensor, converting the electric signal into the switching state of the relay 19, and leading the switching state of the relay 19 out of the invention through an electric connector, so that an external application circuit can collect the working state of the brake detected by the invention, and the brake protection function of the crane is realized.
The adjustment chute base plate 12 is mounted at the bottom of the housing 1. The bottom plate 12 of the adjusting slide groove is provided with two trapezoidal slide grooves, one slide groove is a slide groove for wearing the adjusting slide block 15, and the other slide groove is a slide groove for opening and closing the adjusting slide block. The sliding groove is in a trapezoidal design and is matched with the size of the main body of the sliding block, smooth sliding during adjustment can be guaranteed, fastening can be facilitated after adjustment is finished, the sliding block can be fastened only by screwing one screw in the fastening screw hole, the sliding block can be tightly attached to the sliding groove after fastening, and looseness is not prone to occurring. And behind the not hard up screw, the slider will be in the pine take off state between the spout bottom plate, and the slider can freely slide to realize the adjustment of the free position of slider, after the adjustment, the adjustment can be accomplished to fastening screw.
The non-operating condition of wearing and tearing state, only wearing and tearing to the certain degree at the brake shoe of stopper just can trigger, so the wearing and tearing detect certainly be at the end of whole stroke, after the braking is closed to the brake shoe is worn and is triggered after the certain degree, and the rigidity, so stopper wearing and tearing detect slider 8 will be fixed on wire rope 3 through zonulae occludens. The reliable detection of the wear state is achieved by adjusting the operating position of the wear adjustment slider 15.
Because the stroke of the push rod of the brake is increased along with the continuous abrasion of the brake shoe, if the slide block for detecting the opening and closing state of the brake is fixed on the steel wire rope 3 in a tight connection mode, the action position of the slide block is changed along with the stroke change of the brake, therefore, the brake can be gradually separated from the detection position to cause detection failure, in order to solve the problem, the invention adopts a sliding connection mode, a sliding block for detecting the opening and closing state of the brake is pressed on the steel wire rope 3 through two pressing wheels, and because of the larger pressure, therefore, a large friction force exists, so that when excessive resistance is not met, the sliding block for detecting the opening and closing state of the brake still moves along with the movement of the steel wire rope 3, when the resistance is too large, the sliding is generated between the steel wire rope and the steel wire rope 3, and the steel wire rope do not move together. Therefore, the stroke of the sliding block for detecting the opening and closing state is limited in a certain mode, the sliding block for detecting the opening and closing state can move along with the steel wire rope 3, the running section of the sliding block can be limited within a certain range, the reliability of detecting the opening state and the closing state of the brake can be ensured by reasonably adjusting the position and the range of the section, and the expected target that the detection of the opening and closing state of the brake fails due to the fact that the stroke section is enlarged due to abrasion of a brake shoe of the brake can be avoided. Under the condition of reasonable adjustment, the opening and closing detection slide block 10 can be ensured to be always in the upper limit of the limit interval when the brake is opened, the photoelectric sensor of the adjustment slide block 16 is triggered to be opened, and be always in the lower limit of the limit interval when the brake is closed, and the photoelectric sensor of the adjustment slide block 17 is triggered to be closed, so that even if the brake shoe is continuously worn, the stroke of the brake is larger and larger, and the detection of the opening and closing state of the brake cannot be influenced. And because the double detection of the opening and closing states of the brake is realized, the detection of the insufficient brake stroke of the brake can be realized, the defect of the brake stroke can be confirmed through the mutual verification of the opening and closing states when the brake cannot be completely opened due to the failure of a push rod of the brake or the oil shortage, and the reliable protection is realized.
When the brake is normally closed, the pull rod 2 is pulled out by about 1 cm, a stroke of about 1 cm is reserved for wear detection, and the wear detection slide block 8 does not trigger the photoelectric sensor on the wear adjustment slide block 15. The full stroke of the hydraulic push rod brake is 5 cm, namely the pull rod 2 can be pulled out by about 4 cm at present, and the stroke requirement of the hydraulic push rod brake at present can be met.
As shown in the figure, the opening/closing adjustment slider has triggered the photoelectric sensor on the closing adjustment slider 17, and the detection of the closed state of the brake is realized.
When the wear is triggered, the travel of the pull rod 2 is already substantially 0, and the wear detection slide 8 has triggered the photoelectric sensor on the wear adjustment slide 15, thus triggering the detection of the wear state. The position of the abrasion adjusting slide block 15 can be flexibly adjusted, and the invention allows the abrasion adjusting slide block 15 to have a stroke of about 2 cm to be adjusted, and the abrasion adjusting slide block can be flexibly adapted under the conditions of being applied to different hydraulic push rod brakes and different brake shoe abrasion degrees. The stop plate on the closing adjustment slider 17 blocks the opening and closing adjustment slider from sliding continuously, that is, when the brake stroke sinks continuously along with the abrasion of the brake, the opening and closing detection slider 10 will not slide continuously because of the blocking of the opening and closing adjustment slider, even if the brake reaches the abrasion position, the opening and closing detection slider 10 can still reliably trigger the photoelectric sensor on the closing adjustment slider 17, thereby ensuring the reliability of the detection of the closed state. The closing adjusting slide 17 of the invention has an adjusting travel of about 2 cm and is flexible to adapt to different hydraulic push rod brakes and different brake shoe wear degrees.
In the working state when the brake is opened, the travel of the pull rod 2 is basically maximum at the moment, but about 1 cm of travel is reserved for adjusting the brake on site. As shown, the open/close detection slider 10 has triggered the photo sensor on the open adjustment slider 16, thereby triggering the detection of the brake open state. At this time, the limit plate on the opening adjustment slider 16 blocks the opening adjustment slider from sliding continuously, even if the stroke of the brake is increased continuously due to the later maintenance adjustment of the brake, the opening adjustment slider will not slide continuously due to the blocking of the opening adjustment slider 16, and even if the maximum stroke of the brake is adjusted, the opening detection slider 10 can still reliably trigger the photoelectric sensor on the opening adjustment slider 16, thereby ensuring the reliability of the detection of the opening state. The opening adjustment slider 16 of the present invention has an adjustment travel of about 2 cm and is flexible to adapt to different hydraulic push rod brakes and different brake shoe wear levels.
In summary, it can be seen that the positions of the opening adjusting slide block 16 and the closing adjusting slide block 17 are reasonably adjusted, so that the opening state detection and the closing state detection of the hydraulic push rod brake can be effectively realized, and meanwhile, the reasonable interval adjustment can ensure that the detection signal can be triggered only when the stroke interval of the hydraulic push rod brake meets the requirement, thereby ensuring that the stroke interval of the brake meets the requirement and avoiding the occurrence of accidents.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a hydraulic pressure push rod stopper state detection equipment, includes casing (1) and pull rod (2), its characterized in that:
the pull rod (2) penetrates through a pull rod mounting hole of the shell (1), the tail of the pull rod (2) is connected with a steel wire rope (3), two steel wire rope pulley shafts (4) are mounted on the inner side wall of the shell (1), each steel wire rope pulley shaft (4) is rotatably mounted with a steel wire rope pulley (5), the steel wire rope (3) penetrates through the two steel wire rope pulleys (5), one end, far away from the pull rod (2), of the steel wire rope (3) is connected with a tension spring (6), one side, close to the pull rod mounting hole, of the shell (1) is provided with a tension spring fixing column (7), and the free end of the tension spring (6) is fixed on the tension spring fixing column (7);
a wear detection sliding block (8) is fixedly arranged on the steel wire rope (3) close to the pull rod (2), the lower end of the wear detection sliding block (8) is movably arranged in a wear detection sliding groove (9), the abrasion detection sliding chute (9) is fixedly arranged on the inner side of the shell (1), an opening and closing detection sliding block (10) is arranged on the position, close to the tension spring (6), of the steel wire rope (3), an opening and closing detection sliding chute (11) is arranged at the lower end of the opening and closing detection sliding block (10), an adjusting chute bottom plate (12) is arranged between the abrasion detection chute (9) and the opening and closing detection chute (11), an abrasion adjusting chute (13) and an opening and closing adjusting chute (14) are processed on the adjusting chute bottom plate (12), a wear adjusting slide block (15) is arranged in the wear adjusting sliding groove (13), an opening adjusting slide block (16) and a closing adjusting slide block (17) are arranged in the opening and closing adjusting slide groove (14); the abrasion adjusting slide block (15), the opening adjusting slide block (16) and the closing adjusting slide block (17) are respectively provided with a photoelectric sensor;
the cable pulley is characterized in that a control circuit board (18) is arranged on the left side, located on the steel wire rope pulley (5), of the inner side of the shell (1), a relay (19) is installed on the control circuit board (18), and an electric connector (20) is installed on the outer side wall, close to the control circuit board (18), of the shell (1) and is electrically connected with the relay (19).
2. The hydraulic push-rod brake state detection device according to claim 1, characterized in that: the opening adjusting slide block (16) and the closing adjusting slide block (17) are fastened through fastening screw holes, and the two adjusting slide blocks are tightly connected with the adjusting chute bottom plate (12) and cannot slide after being fastened.
3. The hydraulic push-rod brake state detection device according to claim 1, characterized in that: the abrasion adjusting sliding block (15) is fastened through a fastening screw hole, and the abrasion adjusting sliding block (15) is tightly connected with the adjusting sliding chute bottom plate (12) and cannot slide after being fastened.
4. The hydraulic push-rod brake state detection device according to claim 1, characterized in that: the adjusting chute bottom plate (12) is fixedly arranged at the bottom of the shell (1) through a mounting hole.
5. The hydraulic push-rod brake state detection device according to claim 1, characterized in that: the abrasion detection sliding block (8) comprises an upper sliding block and a lower sliding block, a trigger plate is horizontally arranged on the upper sliding block, two fastening screw holes are machined in the upper sliding block and the lower sliding block, the fastening screw holes of the upper sliding block and the lower sliding block correspond to each other one by one, and a groove of a small circular arc is machined in the lower surface of the upper sliding block and the upper surface of the lower sliding block.
6. The hydraulic push-rod brake state detection device according to claim 1, characterized in that: the opening and closing detection sliding block (10) comprises an upper sliding block and a lower sliding block, a trigger plate is arranged on the upper sliding block, a square groove is machined in the middle of the upper sliding block and the lower sliding block, and an upper pressing wheel and a lower pressing wheel are respectively installed inside the square groove.
7. The hydraulic push-rod brake state detection device according to claim 1, characterized in that: wearing and tearing adjustment slider (15) include photoelectric sensor and trapezoidal slider main part, the upper end of trapezoidal slider main part is provided with the fastening screw, open adjustment slider (16) and include photoelectric sensor and trapezoidal slider main part, photoelectric sensor installation and trapezoidal slider main part upper surface one side, trapezoidal slider main part opposite side processing fastening screw, limiting plate need be processed to trapezoidal slider main part upper surface.
8. The hydraulic push-rod brake state detection device according to claim 1, characterized in that: close adjustment slider (17) and include photoelectric sensor and trapezoidal slider main part, the limiting plate is installed to the upper end of trapezoidal slider main part.
9. The hydraulic push-rod brake state detection device according to claim 1, characterized in that: the closing adjusting slide block (17) is a left mirror image body and a right mirror image body of the opening adjusting slide block, and the size, the material and the assembly mode of the closing adjusting slide block are the same as those of the opening adjusting slide block.
10. The hydraulic push-rod brake state detection device according to claim 1, characterized in that: the adjusting chute bottom plate (12) is a flat steel plate, the thickness of the adjusting chute bottom plate is 5 mm, trapezoidal chutes are symmetrically processed on two sides of the adjusting chute bottom plate and are respectively a wear detection chute (9) and an opening and closing detection chute (11), and a mounting hole is processed in the middle of the adjusting chute bottom plate (12).
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| CN202110792228.9A CN113503329B (en) | 2021-07-14 | 2021-07-14 | Hydraulic push rod brake state detection equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110792228.9A CN113503329B (en) | 2021-07-14 | 2021-07-14 | Hydraulic push rod brake state detection equipment |
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| CN113503329A true CN113503329A (en) | 2021-10-15 |
| CN113503329B CN113503329B (en) | 2024-04-16 |
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| CN202110792228.9A Active CN113503329B (en) | 2021-07-14 | 2021-07-14 | Hydraulic push rod brake state detection equipment |
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| CN113503329B (en) | 2024-04-16 |
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