CN108892024B - Automatic staircase comb plate safety protection switch trigger force measuring device and measuring method - Google Patents
Automatic staircase comb plate safety protection switch trigger force measuring device and measuring method Download PDFInfo
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- CN108892024B CN108892024B CN201811056467.2A CN201811056467A CN108892024B CN 108892024 B CN108892024 B CN 108892024B CN 201811056467 A CN201811056467 A CN 201811056467A CN 108892024 B CN108892024 B CN 108892024B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B29/00—Safety devices of escalators or moving walkways
Abstract
The invention provides a triggering force measuring device and a triggering force measuring method for a safety protection switch of an escalator comb plate, wherein a fixing structure, a pulling pressure transmission structure and a pulling pressure measuring structure are assembled on a main body structure, the measuring device is fixed at a proper position through the fixing structure, the stretching of a detection head is controlled through a thread transmission mechanism, a scene of the stress of the escalator comb plate in a real scene is simulated, the safety switch is triggered, the triggering force of the safety switch of the comb plate is measured, and a safety switch triggering mechanism is adjusted to ensure that the triggering force of the safety switch of the comb plate is in a set safety triggering force range, so that the escalator can normally and safely run; the device simple structure is reasonable, measures quick accuracy, only needs alone can accomplish the operation adjustment, has improved the security of escalator operation, reliability greatly, has saved simultaneously and has detected the human cost, has improved detection efficiency, has important meaning to escalator safe operation.
Description
Technical Field
The invention belongs to the technical field of special electromechanical equipment, and particularly relates to a triggering force measuring device and a measuring method for a safety protection switch of an escalator comb plate.
Background
The escalator is used more and more frequently in daily life, and even becomes an essential infrastructure every day, in the running process of the escalator, certain foreign matters inevitably get stuck in the comb plate of the escalator, and if the escalator runs continuously, safety accidents are inevitably caused, so that an escalator comb plate safety protection device is generally arranged at the safety comb plate at the outlet end and the inlet end of the escalator; in the running process of the escalator, a safety protection device is generally arranged below a floor plate, namely, below a metal plate connected with a comb plate, and is arranged at an outlet and an inlet of the escalator or a moving walk, and is connected with a safety protection switch; however, in the actual running process, the safety protection switch may be too small or too large in trigger force setting, so that the escalator cannot be closed according to the actual situation; therefore, the triggering force required by the safety protection switch is measured, and then the triggering force is adjusted so as to set the accurate triggering force, which is the premise of ensuring that the safety protection device can work normally; however, the existing detection of the safety protection switch of the escalator comb plate only uses a simple tool to push or pull the comb plate, so as to detect whether the comb plate can trigger the safety switch, and the force required by triggering is not accurately measured.
Accordingly, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The invention aims to solve the problems that the detection scheme of the safety protection switch of the comb plate of the escalator cannot measure the triggering force, only can detect whether the safety switch can be triggered, cannot accurately adjust the triggering force of the safety protection switch according to measurement, has high requirement on the number of detection personnel and the like in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a triggering force measuring device of an escalator comb plate safety protection switch, which comprises: the device comprises a main body structure, a fixing structure, a tension and pressure transmission structure and a tension and pressure measurement structure;
the main body structure is provided with a guide rail and a bearing seat and is used for assembling a fixed structure, a tension and compression transmission structure and a tension and compression measurement structure;
a fixing structure assembled on the main body structure for fixing the measuring device so as to perform tension and pressure measurement;
the pulling pressure transmission structure is positioned in the main body structure and is used for operating the stretching of the pulling pressure rod so as to trigger the safety switch, and the pulling pressure measurement structure is convenient for measuring the pulling pressure;
the tension-pressure measuring structure comprises a tension-pressure sensor and a tension-pressure display; the tension and pressure sensor is positioned in the tension and pressure transmission structure and measures the tension and pressure born by the tension and pressure rod in the process of completing action transmission.
An escalator comb plate safety protection switch trigger force measuring device as described above, preferably, the fixing structure comprises:
the clamping block structures are arranged and connected with the main body structure through guide rails, so that the span of the clamping blocks can be conveniently adjusted according to the width of the tread comb tooth grooves at the measuring position; each clamping block structure comprises a locking structure and a guide rail matching surface;
preferably, a dovetail groove-rectangular guide rail in the form of a sliding guide rail is adopted as a guide rail for connecting the clamping block of the clamping block structure with the measuring device;
still preferably, each of said gripping block structures comprises two identical locking structures.
An escalator comb plate safety protection switch trigger force measuring device as described above, preferably, the locking structure comprises:
the locking deflector rod is connected with the eccentric wheel through a rotating shaft, and the coaxial eccentric wheel is driven to rotate by rotating the locking deflector rod;
the eccentric wheel is assembled in a mounting hole formed in the bottom of the clamping block, the rotating shaft is arranged in a through hole above the eccentric wheel mounting hole, and the clamping and loosening are realized through the rotation of the eccentric wheel and the matching of the eccentric wheel and the clamping piece;
the clamping piece, the clamping piece is for two parallel slice structures that clamp piece bottom eccentric wheel one side was protruding, and the clamping piece that is close to the eccentric wheel is movable clamping piece, and be fixed clamping piece with movable clamping piece parallel, movable clamping piece both sides and one end processing have the hole that runs through clamp piece upper and lower face, make movable clamping piece have only one end to be connected with clamp piece, the eccentric wheel of being convenient for rotates the extrusion displacement to movable clamping piece, makes the gap between two clamping pieces change to realize pressing from both sides tight and unclamping.
An escalator comb plate safety protection switch triggering force measuring device as described above, preferably, the tension and compression transmission structure comprises:
the rotary deflector rod is assembled on an input transmission shaft of the gear transmission mechanism, so that the rotary deflector rod can be rotated conveniently to drive the gear transmission and the structure to operate;
the gear transmission mechanism comprises a pair of bevel gears which are meshed with each other, an input gear and an output gear respectively, and the rotary deflector rod converts the rotation in the vertical direction into the rotation in the horizontal direction through the bevel gear mechanism;
the main structure is provided with bearing seats at corresponding positions at two ends of the transmission sleeve respectively, and the transmission sleeve is connected with the main structure through bearings; the output gear is positioned at one end of the transmission sleeve and is coaxially connected with the transmission sleeve; threads are arranged in the transmission sleeve;
the threaded push rod is positioned in the transmission sleeve and is in threaded connection with the transmission sleeve to form a threaded kinematic pair; one end of the threaded push rod is of a flat head shaft structure, the flat head shaft structure is assembled in a guide groove on the main body structure of the measuring device, and the rotation of the transmission sleeve is converted into linear motion of the threaded push rod through the limit of the threaded motion pair and the guide groove;
one end of the pull pressure sensor is connected with the other end of the threaded push rod and used for transmitting the movement of the threaded push rod;
the ball winch is positioned in a spherical groove arranged at one end of the tension and compression rod and connected with the other end of the tension and compression sensor, and is used for transmitting the motion of the tension and compression sensor;
the tension and compression rod is positioned at the tail end of the tension and compression transmission structure and is used for contacting a surface to be detected to transmit tension and compression force, and the tension and compression rod is assembled in the main body structure and connected with the main body structure through the rectangular sliding guide rail, so that the tension and compression rod and the thread push rod, the tension and compression sensor and the ball winch reciprocate along the same straight line.
An escalator comb plate safety protection switch triggering force measuring device as described above, preferably the bevel gear comprises a large gear and a small gear, said small gear being fitted on said input drive shaft, realizing a gear reduction mechanism.
According to the triggering force measuring device for the safety protection switch of the escalator comb plate, the head of the pulling and pressing rod is preferably provided with the barb, so that the safety protection switch triggered by up-and-down movement can be conveniently detected.
According to the triggering force measuring device for the safety protection switch of the escalator comb plate, preferably, the fixing structure further comprises the support, the support is provided with the hanging lug grooves, and the main structure is fixed on the support through the hanging lug grooves and is convenient for measuring the triggering force of the triggering safety switch in vertical movement.
The measuring method of the triggering force measuring device of the safety protection switch of the escalator comb plate according to any one of the above claims, preferably the measuring method comprises the following steps:
s1, measuring the triggering force of a horizontal movement triggering safety switch;
s2, measuring the triggering force of the vertical movement triggering safety switch.
The measuring method of the triggering force measuring device of the safety protection switch of the escalator comb plate as described above, preferably, the step S1 includes the following steps:
s11, rotating a rotating deflector rod above the pinion to drive the pulling and pressing rod to shrink, and placing the testing device on the step tread at the front end of the comb plate to enable the front end of the pulling and pressing rod to be in contact with the comb plate;
s12, locking the testing device on the tread of the step by rotating the locking pulling rod;
s13, a rotary pulling rod above the rotary pinion drives a pulling rod to extend out, so that the comb plate is pushed to move, and the rotary gear is immediately stopped when the safety switch is triggered;
s14, reading the maximum thrust generated in the pushing process through the pulling pressure display, and recording the thrust as the triggering force of triggering the safety switch by the horizontal movement of the comb plate.
The measuring method of the triggering force measuring device of the safety protection switch of the escalator comb plate as described above, preferably, the step S2 includes the following steps:
s21, rotating a rotating deflector rod above the pinion to drive the pulling pressure rod to extend out, connecting the testing device with a hanging lug groove on a vertical plate of the bracket through a pin shaft, and adjusting the positions of the bracket and the measuring device to enable barbs at the front end of the pulling pressure rod to be in contact with the comb plate;
s22, the tester steps on the bracket transverse plate by two feet to keep the bracket in a stable state in the test process;
s23, a rotary pulling rod above the rotary pinion drives a pulling rod to shrink, so that the comb plate is pulled to move, and the rotary gear is immediately stopped when the safety switch is triggered;
s24, reading the maximum thrust generated in the pushing process through the pulling pressure display, and recording the thrust as the triggering force of triggering the safety switch by the horizontal movement of the comb plate.
Compared with the closest prior art, the technical scheme provided by the invention has the following excellent effects:
according to the triggering force measuring device and the triggering force measuring method for the safety protection switch of the escalator comb plate, the stretching of the detection head is controlled through the threaded transmission mechanism, the scene of triggering the safety switch by the force of the escalator comb plate in a real scene is simulated, the safety switch in the horizontal direction and the safety switch in the vertical direction are triggered, the force required by the comb plate to trigger the safety switch is measured in the process of being stressed until the safety switch is triggered, and according to the measured force, the triggering force of the safety switch is regulated according to the reasonable triggering force set under the condition of ensuring safety in the actual operation process, so that the triggering force of the safety switch of the comb plate is in the set range, and the normal and safe operation of the escalator is ensured. The device simple structure, it is accurate to measure, only needs alone can accomplish the operation adjustment, has improved security, the reliability of escalator operation greatly, has saved the detection human cost simultaneously, has improved detection efficiency. Has important significance for the safe operation of the escalator.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a measuring device according to an embodiment of the present invention;
FIG. 2 is a front view showing the overall structure of a measuring device according to an embodiment of the present invention;
FIG. 3 is a left side view showing the whole structure of a measuring device according to an embodiment of the present invention;
FIG. 4 is a top view showing the overall structure of a measuring device according to an embodiment of the present invention;
FIG. 5 is a schematic view in section A-A of the locking structure of the measuring device of FIG. 4;
FIG. 6 is a schematic cross-sectional view of the overall structure B-B of the measuring device of FIG. 4;
FIG. 7 is a schematic diagram of a safety switch horizontal trigger force measurement in an embodiment of the invention;
FIG. 8 is a schematic diagram of a vertical trigger force measurement of a safety switch in an embodiment of the invention;
FIG. 9 is a flow chart of a measurement method in an embodiment of the invention;
fig. 10 is a specific flowchart of step S1 in fig. 9;
fig. 11 is a specific flowchart of step S2 in fig. 9.
In the figure: 11. a clamping block A; 12. a clamping block B; 13. locking a deflector rod; 14. an eccentric wheel; 15. a clamping piece; 16. a bracket; 2. a main body structure; 21. hanging lugs; 31. rotating the deflector rod; 32. a pinion gear; 33. a transmission sleeve; 34. a threaded push rod; 35. a pull pressure sensor; 36. spherical hinge; 37. a pull rod; 4. pulling the pressure display; 5. a step; 6. a measuring device; 7. a comb plate; 81. triggering a safety switch horizontally; 82. the safety switch is triggered vertically.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
The invention will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and does not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "coupled" and "connected" as used herein are to be construed broadly and may be, for example, fixedly coupled or detachably coupled; either directly or indirectly through intermediate components, the specific meaning of the terms being understood by those of ordinary skill in the art as the case may be.
As shown in fig. 1, which is a schematic diagram of the overall structure of a measuring device in an embodiment of the present invention, the present invention provides a measuring device for triggering force of a safety protection switch of an escalator comb plate, and a measuring device 6 includes: the device comprises a main body structure 2, a fixed structure, a tension and pressure transmission structure and a tension and pressure measurement structure;
the main body structure 2 is provided with a guide rail and a bearing seat for assembling a bearing fixing structure, a tension and compression transmission structure and a tension and compression measurement structure.
The fixing structure is assembled on the main body structure 2 and is used for fixing the measuring device 6 so as to carry out tension and pressure measurement; the fixing structure comprises two clamping block structures, namely a clamping block A11 and a clamping block B12, wherein the clamping block A11 and the clamping block B12 are respectively connected with a main body structure 2 of the measuring device 6 through a dovetail groove-rectangular guide rail type sliding guide rail, so that the span of the clamping block can be conveniently adjusted according to the width of a tread comb tooth groove at a measuring position to adapt to the two structures; the clamping block A11 and the clamping block B12 respectively comprise two locking structures and a guide rail matching surface; as shown in fig. 1 and 5, the locking structure comprises a locking deflector 13, an eccentric wheel 14 and a clamping piece 15, in the using process, the clamping piece 15 is placed in a tread comb tooth slot, the eccentric wheel 14 is driven to rotate by rotating the locking deflector 13, and then the clamping piece 15 is extruded, so that the clamping piece 15 clamps the tread comb tooth, and the purpose of fixing is achieved.
The fixing structure in the embodiment of the invention further comprises a bracket 16, wherein the bracket is provided with a hanging lug groove, and the main body structure is fixed on the bracket through the hanging lug groove, so that the triggering force of triggering the safety switch by vertical movement can be conveniently measured.
As shown in fig. 6, the tension-compression transmission structure is located in the main body structure 2 of the measuring device 6, and is used for operating the extension and retraction of the tension-compression rod 37, so as to trigger the safety switch, and the tension-compression measurement structure is convenient for measuring tension-compression force; the pulling pressure transmission structure comprises a rotation deflector rod 31, a gear transmission mechanism, a transmission sleeve 33, a threaded push rod 34, a pulling pressure sensor 35, a ball winch 36 and a pulling pressure rod 37.
The gear transmission mechanism adopts a pair of conical gears, in order to reduce the force required for pushing the rotary deflector rod 31 and simultaneously enable the movement of the pulling pressure rod 37 to be slowly controllable, the conical gears comprise a reducing mechanism consisting of a large gear and a small gear 32, the rotating shaft of the rotary deflector rod 31 is coaxially connected with the small gear 32, the small gear 32 is meshed with the large gear, the rotary deflector rod 31 converts the vertical axial rotation into the horizontal axial rotation through the conical gear mechanism, and the large gear is positioned at one end of the transmission sleeve 33 and is coaxially connected with the transmission sleeve 33; the inner cavity of the main body structure 2 of the measuring device 6 is provided with two bearing seats, two ends of the transmission sleeve 33 respectively correspond to the two bearing seats, and the transmission sleeve 33 is connected with the main body structure 2 of the measuring device 6 through bearings; the transmission sleeve 33 is internally provided with threads, and the threaded push rod 34 is positioned in the transmission sleeve 33 and is in threaded connection with the transmission sleeve 33 to form a threaded kinematic pair; one end of the threaded push rod 34 is of a flat head shaft structure, a rectangular guide groove is formed in a position, corresponding to the flat head shaft, of the main body structure 2 of the measuring device 6, the flat head shaft structure is inserted into the guide groove on the main body structure 2 of the measuring device 6, rotation of the threaded push rod 34 is limited through the guide groove, and rotation of the transmission sleeve 33 is converted into linear motion of the threaded push rod 34 through the arrangement of a threaded kinematic pair and the guide groove; the other end of the thread push rod 34 is connected with one end of a tension and pressure sensor 35, and the other end of the tension and pressure sensor 35 is connected with a tension and pressure rod 37 through a ball winch 36; as shown in fig. 1, the head of the pulling and pressing rod 37 is provided with a barb with a comb slot, so as to hook the lower edge of the comb plate 7 when detecting the safety protection switch triggered by the up-down movement.
The pull pressure measuring structure comprises a pull pressure sensor 35 and a pull pressure display 4; the tension and compression sensor 35 is located in the tension and compression transmission structure, and measures the tension and compression force borne by the tension and compression rod 37 in the process of completing motion transmission. The pull pressure display 4 is connected with the upper plane of the pull pressure rod 37, the pull pressure display 4 is connected with the pull pressure sensor 35 through a data line and is used for receiving the force measured by the pull pressure sensor 35, and the force is processed through data and displayed on a display screen in real time, so that the force is convenient for a tester to read.
In the present embodiment, the pull pressure display 4 has a memory function, an alarm function, and a bluetooth function; the pull pressure display 4 has a memory function, can record 20 pieces of recently measured data, and can view the 20 pieces of recently measured data through a button beside a display screen; the pull pressure display 4 also has an alarm function, the function can be used when the trigger force of the safety switch is regulated, the early warning pull force and the early warning pressure are set in advance according to the maximum pull pressure of the set reasonable pull pressure range, when the pull pressure reaches the early warning pull force or the early warning pressure, the pull pressure display 4 directly emits beeping sound, the defect that foreign matters cannot be stopped in time when the safety switch of the comb plate 7 is blocked during the operation of the escalator, the safety of passengers is threatened, the measurement can be stopped at the moment, and the safety switch is regulated until the trigger force is in the set reasonable range; the alarm function can prevent the measuring device 6 from being damaged due to excessive stress; the tension and pressure display 4 also has a Bluetooth function, measured tension and pressure data can be transmitted to mobile clients such as mobile phones and tablet computers through Bluetooth, and the mobile clients can store a plurality of pieces of measurement data, so that the qualification rate of the escalator safety switch can be conveniently obtained by counting the whole measurement condition in the later period.
When the trigger force of the safety switch is measured, the measuring device 6 and the pulling and pressing rod 37 are adjusted to a proper position, the whole measuring device 6 is fixed on the step 5 or the support 16, the rotating deflector rod 31 is rotated by hand, the coaxial pinion 32 is driven to rotate, the pinion 32 transmits the rotation to a large gear meshed with the pinion, the large gear drives the coaxially connected transmission sleeve 33 to rotate together, the threaded push rod 34 converts the rotation of the transmission sleeve 33 into linear expansion, the threaded push rod 34 drives the pulling and pressing sensor 35 connected with the threaded push rod to expand and contract, the pulling and pressing sensor 35 transmits the movement of the threaded push rod 34 to the pulling and pressing rod 37 through the ball hinge 36 to drive the pulling and pressing rod 37 to expand and contract, meanwhile, the pulling and pressing sensor 35 measures the force transmitted by the pulling and pressing rod 37 through the ball hinge 36, measured data is transmitted to the pulling and pressing display 4, and the measured force is displayed in real time through a display screen after the data is processed by the pulling and pressing display 4.
As shown in fig. 9 to 11, the invention also provides a measuring method of the triggering force measuring device 6 of the safety protection switch of the escalator comb plate, which comprises the following steps:
s1, measuring the triggering force of a horizontal movement triggering safety switch, wherein the specific operation steps are as follows:
s11, as shown in FIG. 7, the rotary deflector 31 above the pinion 32 is rotated to make the pulling compression bar 37 in a contracted state; the testing device 6 is placed on the tread of the step 5 at the front end of the comb plate 7, and the position of the testing device 6 is adjusted so that the front end of the tension-compression bar 37 is contacted with the comb plate 7.
S12, the spans of the clamping blocks A11 and B12 are adjusted, so that the clamping sheets 15 are clamped into tooth grooves of the tread comb, and the locking pulling rod is rotated to enable the testing device 6 to be locked on the tread of the step 5.
S13, the pulling pressure display 4 is opened, the pulling rod is rotated at a constant speed above the pinion 32 to drive the pulling rod 37 to extend, so that the comb plate 7 is pushed to move, and the rotation of the gear is stopped immediately when the horizontal triggering safety switch 81 is triggered.
S14, the maximum pushing force generated during pushing is read by the pulling pressure display 4 arranged on the pulling pressure bar 37, and the pushing force is recorded as the triggering force of the comb plate horizontal movement triggering safety switch 81.
S2, measuring the triggering force of the vertical movement triggering safety switch, wherein the specific operation steps are as follows:
s21, as shown in FIG. 8, the rotary deflector 31 above the pinion 32 is rotated to enable the pulling and pressing rod 37 to be in an extending state, the hanging lugs 21 on the testing device 6 are connected with the hanging lug grooves of the bracket 16 through pin shafts, and the positions of the bracket 16 and the measuring device 6 are adjusted to enable the barbs at the front ends of the pulling and pressing rod 37 to be in contact with the comb plate 7.
S22, the tester steps on the transverse plate of the bracket 16 by two feet, so that the bracket 16 is in a stable state in the testing process.
S23, the pulling pressure display 4 is opened, the pulling rod above the pinion 32 rotates at a constant speed to drive the pulling rod 37 to shrink, so that the comb plate 7 is pulled to move, and the rotation of the gear is stopped immediately when the vertical triggering safety switch 82 is triggered.
S24, the maximum pulling force generated in the pulling process is read through a pulling pressure display 4 arranged on a pulling pressure rod 37, and the pulling force is recorded as the triggering force of triggering the safety switch by the vertical movement of the comb plate.
The above step S1 and step S2 are only one of the embodiments of the present invention, and the two steps are not sequential.
In summary, according to the device and the method for measuring the triggering force of the safety protection switch of the escalator comb plate, the stretching of the pulling and pressing rod is controlled through the threaded transmission mechanism, the scene of triggering the safety switch by the force of the escalator comb plate in a real scene is simulated, the safety switch in the horizontal direction and the safety switch in the vertical direction are triggered, the force required by the triggering of the safety switch by the comb plate is measured, and according to the measured force, the safety switch triggering mechanism is regulated according to the reasonable triggering force set under the condition of ensuring safety in the actual operation process, so that the triggering force of the safety switch of the comb plate is in the set range, and the normal and safe operation of the escalator is ensured; the device is simple and reasonable in structure, quick and accurate in measurement, operation adjustment can be completed by only one person, safety and reliability of escalator operation are greatly improved, meanwhile, detection labor cost is saved, and detection efficiency is improved. Has important significance for the safe operation of the escalator.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. An escalator comb plate safety protection switch trigger force measuring device, characterized in that the measuring device comprises: the device comprises a main body structure, a fixing structure, a tension and pressure transmission structure and a tension and pressure measurement structure;
the main body structure is provided with a guide rail and a bearing seat and is used for assembling a fixed structure, a tension and compression transmission structure and a tension and compression measurement structure;
a fixing structure assembled on the main body structure for fixing the measuring device so as to perform tension and pressure measurement;
the pulling pressure transmission structure is positioned in the main body structure and is used for operating the stretching of the pulling pressure rod so as to trigger the safety switch, and the pulling pressure measurement structure is convenient for measuring the pulling pressure;
the tension-pressure measuring structure comprises a tension-pressure sensor and a tension-pressure display; the tension and pressure sensor is positioned in the tension and pressure transmission structure and is used for measuring tension and pressure born by the tension and pressure rod in the process of completing action transmission;
the fixing structure comprises two clamping block structures, and the clamping block structures are connected with the main body structure through guide rails, so that the span of the clamping blocks can be conveniently adjusted according to the width of the tread comb tooth grooves at the measuring position; each clamping block structure comprises a locking structure and a guide rail matching surface;
the connecting guide rail of the clamping block and the measuring device of the clamping block structure adopts a dovetail groove-rectangular guide rail in the form of a sliding guide rail;
each clamping block structure comprises two identical locking structures;
the locking structure includes:
the locking deflector rod is connected with the eccentric wheel through a rotating shaft, and the coaxial eccentric wheel is driven to rotate by rotating the locking deflector rod;
the eccentric wheel is assembled in a mounting hole formed in the bottom of the clamping block, the rotating shaft is arranged in a through hole above the eccentric wheel mounting hole, and the clamping and loosening are realized through the rotation of the eccentric wheel and the matching of the eccentric wheel and the clamping piece;
the clamping piece, the clamping piece is for two parallel slice structures that clamp piece bottom eccentric wheel one side was protruding, and the clamping piece that is close to the eccentric wheel is movable clamping piece, and be fixed clamping piece with movable clamping piece parallel, movable clamping piece both sides and one end processing have the hole that runs through clamp piece upper and lower face, make movable clamping piece have only one end to be connected with clamp piece, the eccentric wheel of being convenient for rotates the extrusion displacement to movable clamping piece, makes the gap between two clamping pieces change to realize pressing from both sides tight and unclamping.
2. The escalator comb plate safety protection switch triggering force measurement apparatus of claim 1, wherein said pull pressure transmission structure comprises:
the rotary deflector rod is assembled on an input transmission shaft of the gear transmission mechanism, so that the rotary deflector rod can be rotated conveniently to drive the gear transmission and the structure to operate;
the gear transmission mechanism comprises a pair of bevel gears which are meshed with each other, an input gear and an output gear respectively, and the rotary deflector rod converts the rotation in the vertical direction into the rotation in the horizontal direction through the bevel gear mechanism;
the main structure is provided with bearing seats at corresponding positions at two ends of the transmission sleeve respectively, and the transmission sleeve is connected with the main structure through bearings; the output gear is positioned at one end of the transmission sleeve and is coaxially connected with the transmission sleeve; threads are arranged in the transmission sleeve;
the threaded push rod is positioned in the transmission sleeve and is in threaded connection with the transmission sleeve to form a threaded kinematic pair; one end of the threaded push rod is of a flat head shaft structure, the flat head shaft structure is assembled in a guide groove on the main body structure, and the rotation of the transmission sleeve is converted into linear motion of the threaded push rod by limiting the threaded motion pair and the guide groove;
one end of the pull pressure sensor is connected with the other end of the threaded push rod and used for transmitting the movement of the threaded push rod;
the ball winch is positioned in a spherical groove arranged at one end of the tension and compression rod and connected with the other end of the tension and compression sensor, and is used for transmitting the motion of the tension and compression sensor;
the tension and compression rod is positioned at the tail end of the tension and compression transmission structure and is used for contacting a surface to be detected to transmit tension and compression force, and the tension and compression rod is assembled in the main body structure and connected with the main body structure through the rectangular sliding guide rail, so that the tension and compression rod and the thread push rod, the tension and compression sensor and the ball winch reciprocate along the same straight line.
3. An escalator comb plate safety protection switch triggering force measuring device according to claim 2, wherein said conical gear comprises a large gear and a small gear, said small gear being mounted on said input drive shaft to effect a gear reduction mechanism.
4. An escalator comb plate safety protection switch triggering force measuring device according to claim 2, wherein the head of the pull rod is provided with barbs for facilitating detection of the safety protection switch triggered by the up-and-down movement.
5. The device for measuring the triggering force of the safety protection switch of the comb plate of the escalator as claimed in claim 1, wherein the fixing structure further comprises a bracket, the bracket is provided with a hanging lug groove, and the main body structure is fixed on the bracket through the hanging lug groove, so that the triggering force of the safety switch triggered by the vertical movement can be conveniently measured.
6. A measuring method using the escalator comb plate safety protection switch triggering force measuring apparatus according to any one of claims 1-5, characterized in that the measuring method comprises the steps of:
s1, measuring the triggering force of a horizontal movement triggering safety switch;
s2, measuring the triggering force of the vertical movement triggering safety switch.
7. The measurement method according to claim 6, wherein the step S1 includes the steps of:
s11, rotating a rotating deflector rod above the pinion to drive the pulling and pressing rod to shrink, and placing the testing device on the step tread at the front end of the comb plate to enable the front end of the pulling and pressing rod to be in contact with the comb plate;
s12, locking the testing device on the tread of the step by rotating the locking pulling rod;
s13, a rotary pulling rod above the rotary pinion drives a pulling rod to extend out, so that the comb plate is pushed to move, and the rotary gear is immediately stopped when the safety switch is triggered;
s14, reading the maximum thrust generated in the pushing process through the pulling pressure display, and recording the thrust as the triggering force of triggering the safety switch by the horizontal movement of the comb plate.
8. The measurement method according to claim 6, wherein the step S2 includes the steps of:
s21, rotating a rotating deflector rod above the pinion to drive the pulling and pressing rod to extend, connecting the testing device with a hanging lug groove on a vertical plate of the bracket, and adjusting the positions of the bracket and the measuring device to enable barbs at the front end of the pulling and pressing rod to be in contact with the comb plate;
s22, the tester steps on the bracket transverse plate by two feet to keep the bracket in a stable state in the test process;
s23, a rotary pulling rod above the rotary pinion drives a pulling rod to shrink, so that the comb plate is pulled to move, and the rotary gear is immediately stopped when the safety switch is triggered;
s24, reading the maximum pulling force generated in the pulling process through a pulling pressure display, and recording the pulling force as the triggering force for triggering the safety switch by the vertical movement of the comb plate.
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| CN109502468B (en) * | 2018-12-14 | 2023-09-22 | 华南理工大学 | Sliding type power-supply-free wireless alarm escalator comb plate safety device |
| CN110510491A (en) * | 2019-08-06 | 2019-11-29 | 广东省特种设备检测研究院珠海检测院 | A kind of automatic staircase comb plate safety protection function detection system and method |
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