Comb plate heating method

Abstract

The present invention discloses a comb plate heating method, which relates to the technical field of comb plates. The specific heating method operation steps are as follows: Step 1, prepare the comb plate, groove the comb plate near the comb teeth, and arrange the groove body horizontally so that the inner part of the comb plate near the comb teeth presents a horizontal hollow structure, and the outer part of the groove body is sealed with a sealing plate of a matching structure later; Step 2, install quartz sand and electric heating strips. The present invention can perform intelligent heating treatment on the comb plate when in use, avoiding the jamming caused by ice slag at the relative motion position between the comb plate and the steps in cold winter, and causing the comb plate to break and damage the step tooth surface. The design of the present invention does not require manual cleaning after installation, and has a high degree of intelligence, which prolongs the service life of the comb plate and reduces the number of inspections of the comb plate.

Description

Technical Field

[0001] The present invention relates to the technical field of comb plates, and more particularly to a method for heating a comb plate. Background Art

[0002] The comb teeth are installed at the entrance and exit, meshing with the grooves on the steps or pedal surfaces. They have an anti-slip function and should have a shape and slope (for example, the design angle should not exceed 40°) that prevents passengers from tripping when leaving the escalator or moving walkway. The ends should be made of easily breakable plastic, aluminum or rubber to ensure that objects can be released when clamped.

[0003] In the northern region or other cold areas in winter, escalators and moving walkways are subject to ice formation on the comb teeth of the aluminum alloy comb plates and steps due to the cold weather. When the escalators and moving walkways are in operation, the relative movement between the comb plate teeth and the steps is easily blocked by ice debris, causing the comb plate teeth to break and the step tooth surface to be damaged, thus affecting the service life of the comb plate and increasing the number of inspections of the comb plate. Therefore, it is necessary to design a structure that can heat the comb plate during use to heat, melt and clean the ice debris to solve this problem. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a comb plate heating method, which can perform intelligent heating treatment on the comb plate when in use, thereby avoiding the jamming of the relative movement position of the comb teeth of the comb plate and the steps due to ice debris in cold winter, and causing the comb teeth of the comb plate to break and damage the tooth surface of the step. The design of the present invention does not require subsequent manual cleaning after installation, has a high degree of intelligence, extends the service life of the comb plate, and reduces the number of inspections of the comb plate, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the present invention provides the following technical solution: a comb plate heating method, the specific heating method operation steps are as follows:

[0006] Step 1: prepare a comb plate, and perform a groove process on the comb plate near the comb teeth. The groove body is arranged horizontally so that the inner part of the comb plate near the comb teeth is a horizontal hollow structure, and the outer part of the groove body is sealed with a sealing plate of a matching structure later;

[0007] Step 2: Installation of quartz sand and electric heating strips: First, lay a layer of quartz sand on the trough inside the comb plate, then lay the prepared electric heating strip on the quartz sand, and make the interface of the electric heating strip pass through the trough to extend to the outside of the comb plate to be connected to electricity. After the electric heating strip is installed, lay another layer of quartz sand on top of the electric heating strip to cover it, so that the electric heating strip placed inside the trough is completely wrapped in the quartz sand, and then use the sealing plate to close the trough;

[0008] Step 3: Open a cavity inside the comb plate near the comb teeth, which is offset from the position of the discharge heating strip slot, and install a thermistor inside the cavity;

[0009] Step 4: After the thermistor is installed, the terminal of the thermistor is extended to the outside of the comb plate, the location of the cavity is sealed, and then a single-chip microcomputer is installed on the outside of the comb plate, and a relay is installed on the single-chip microcomputer;

[0010] Step 5. The single chip microcomputer sets a temperature value as needed. When the temperature detected by the thermistor is lower than the set temperature value, it indicates that the temperature of the comb plate is low. The single chip microcomputer controls the relay to close so that the electric heating strip is energized to generate heat. When the temperature detected by the thermistor reaches the set value, the single chip microcomputer controls the relay to disconnect and the electric heating strip stops working.

[0011] As a further improvement of the technical solution of the present invention, the method of grooving the comb plate in step one can be achieved by adding a protruding part to the casting mold of the comb plate to achieve a structure with a groove body after molding, or by directly die-casting the existing comb plate after molding to form a groove body structure.

[0012] As a further improvement of the technical solution of the present invention, the quartz sand laid for the first time in the step 2 is scraped flat with a scraper after laying, so that its thickness inside the trough body is uniform. When the quartz sand is laid for the second time after the electric heating strip is installed, the quartz sand needs to be leveled again, and the installed electric heating strips must be completely wrapped in the quartz sand on both sides without being exposed.

[0013] As a further improvement of the technical solution of the present invention, in step three, after the thermistor is installed, the cavity where the thermistor is installed needs to be sealed with a sealing plate, and the sealing plate and the sealing plate used in step two are fixedly connected to the comb plate by screws.

[0014] As a further improvement of the technical solution of the present invention, the thermistor may be replaced by other temperature sensing devices capable of detecting temperature data.

[0015] As a further improvement of the technical solution of the present invention, the output end of the single-chip microcomputer in step four is connected to an external host device with a display screen, the input end of the relay is connected to the output end of the single-chip microcomputer, and the power supply circuit of the electric heating strip installed inside the comb plate is controlled by the relay on the single-chip microcomputer.

[0016] As a further improvement of the technical solution of the present invention, in step five, setting a temperature value on the single-chip microcomputer is a specific temperature value set according to actual needs, or it can be a temperature range. The thermistor converts the detected numerical signal into an analog signal through a D / A converter and inputs it to the single-chip microcomputer. The single-chip microcomputer converts the received analog signal into a digital signal through an A / D converter and inputs it to the display screen of the external host device for display.

[0017] As a further improvement of the technical solution of the present invention, the electric heating strip, relay, single-chip microcomputer and thermistor used are all powered by external AC power or photovoltaic power generation, and the electric energy can also be stored in the battery and powered by the battery.

[0018] Beneficial effects of the present invention:

[0019] The present invention sets a position near the comb teeth inside the comb plate as a hollow structure, sets filling quartz sand inside the hollow slot, and installs an electric heating strip inside the quartz sand, so that the quartz sand completely wraps the outside of the electric heating strip, and separately installs a concave cavity for installing a thermistor that is staggered from the position of the slot filled with quartz sand. When in use, the temperature value conducted by the electric heating strip at the comb tooth position of the comb plate can be detected, and the problem of a large difference between the temperature conducted to the comb tooth position and the actual detected temperature caused by direct installation in the quartz sand is avoided, thereby improving the detection accuracy, and when in use, when the temperature measured by the thermistor is lower than the set temperature value, it indicates that The temperature of the comb plate is low, and the single-chip microcomputer controls the relay to close, so that the electric heating strip is energized to generate heat to heat the comb plate, and the heat is transferred to the comb teeth position, avoiding the jamming of the relative movement position of the comb plate and the steps due to ice residue in cold winter, and causing the comb plate teeth to break and the step tooth surface to be damaged. When the temperature detected by the thermistor reaches the set value, that is, the comb plate can reach the temperature to melt the ice residue, the single-chip microcomputer controls the relay to disconnect and the electric heating strip to stop working. This design does not require manual cleaning after installation, has a high degree of intelligence, extends the service life of the comb plate, and reduces the number of inspections and repairs of the comb plate. DETAILED DESCRIPTION

[0020] The following will be clearly and completely described in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] A comb plate heating method, the specific heating method operation steps are as follows:

[0022] Step 1: prepare a comb plate, and perform a slotting process on the comb plate near the comb teeth. The slot body is arranged horizontally so that the inner part of the comb plate near the comb teeth is a horizontal hollow structure. The outer part of the slot body is sealed with a sealing plate of a matching structure at a later stage. The slotting method of the comb plate can be to add a convex part to the casting mold of the comb plate to achieve a structure with a slot body after molding, or to directly die-cast the existing comb plate after molding to form a slot body structure;

[0023] Step 2, installation of quartz sand and electric heating strips, firstly lay a layer of quartz sand on the trough body inside the comb plate, then lay the prepared electric heating strip on the quartz sand, and make the interface of the electric heating strip pass through the trough body and extend to the outside of the comb plate to be connected to electricity, after the electric heating strip is installed, lay another layer of quartz sand on top of the electric heating strip to cover the electric heating strip, so that the electric heating strip placed inside the trough body is completely wrapped in the quartz sand, and then the trough body is closed with a sealing plate, wherein the quartz sand laid for the first time is scraped flat with a scraper after laying, so that the thickness inside the trough body is uniform, and when laying quartz sand for the second time after the electric heating strip is installed, the quartz sand needs to be leveled again, and the installed electric heating strip is completely wrapped in the quartz sand on both sides without being exposed;

[0024] Step 3: Open a cavity at a position near the comb teeth inside the comb plate, which is staggered from the position of the discharge heating strip slot, and install a thermistor inside the cavity. After the thermistor is installed, the cavity where the thermistor is installed needs to be sealed with a sealing plate. The sealing plate and the sealing plate used in step 2 are fixedly connected to the comb plate by screws. The thermistor can be replaced by other temperature sensing devices capable of detecting temperature data.

[0025] Step 4: After the thermistor is installed, the terminal of the thermistor is extended to the outside of the comb plate, the position of the cavity is closed, and then a single-chip microcomputer is installed on the outside of the comb plate, and a relay is installed on the single-chip microcomputer, wherein the output end of the single-chip microcomputer is connected to an external host device with a display screen, the input end of the relay is connected to the output end of the single-chip microcomputer, and the power supply circuit of the electric heating strip installed inside the comb plate is controlled by the relay on the single-chip microcomputer;

[0026] Step 5. The single chip microcomputer sets a temperature value as needed. When the temperature detected by the thermistor is lower than the set temperature value, it indicates that the temperature of the comb plate is low. The single chip microcomputer controls the relay to close and energize the electric heating strip to generate heat. When the temperature detected by the thermistor reaches the set value, the single chip microcomputer controls the relay to disconnect and the electric heating strip stops working. The temperature value set on the single chip microcomputer is a specific temperature value set according to actual needs, or a temperature range can be set. The thermistor converts the detected numerical signal into an analog signal through a D / A converter and inputs it to the single chip microcomputer. The single chip microcomputer converts the received analog signal into a digital signal through an A / D converter and inputs it to the display screen of the external host device for display.

[0027] Among them, the electrical equipment designed in the above steps, such as electric heating strips, relays, single-chip microcomputers and thermistors used, are all powered by external AC power or photovoltaic power generation. The electric energy can also be stored in the battery and powered by the battery, which is convenient for powering the heating part of the comb plate when in use. The battery power supply can keep the heating part running in the event of an external AC power outage, thereby effectively heating the comb plate for a long time in winter.

[0028] Working principle: The present invention designs a comb plate heating method. When in use, first, a groove is made at the position of the comb plate near the comb teeth, and the groove body is arranged horizontally so that the inner part of the comb plate near the comb teeth presents a horizontal hollow structure, and the outer part of the groove body is sealed with a sealing plate of a matching structure at a later time. Among them, the grooved method of the comb plate can be adopted to increase a convex part in the casting molding mold of the comb plate to achieve a structure with a groove body after molding, or the existing comb plate can be directly die-cast after molding to form a groove body structure; secondly, a layer of quartz sand is first laid on the groove body inside the comb plate, and then the prepared electric heating strip is laid on the quartz sand, and the interface part of the electric heating strip is extended through the groove body to the outside of the comb plate to be connected to electricity, and the electric heating After the heating strip is installed, a layer of quartz sand is laid on top of the electric heating strip to cover the electric heating strip, so that the electric heating strip placed in the tank body is completely wrapped in the quartz sand, and then the tank body is closed with a sealing plate, wherein the quartz sand laid for the first time is scraped flat with a scraper after laying, so that the thickness inside the tank body is uniform, and when the quartz sand is laid for the second time after the electric heating strip is installed, the quartz sand needs to be leveled again, and the installed electric heating strip is completely wrapped in the quartz sand on both sides and will not be exposed; then, a concave cavity is separately opened at a position close to the comb teeth inside the comb plate, which is staggered with the position of the above-mentioned electric heating strip tank body, and a thermistor is installed inside the concave cavity, wherein the thermistor is installed Finally, the concave cavity where the thermistor is installed needs to be sealed with a sealing plate, and the sealing plate and the sealing plate used in step 2 are fixedly connected to the comb plate by screws. The installed thermistor can be replaced by other temperature sensing devices capable of detecting temperature data. Furthermore, after the thermistor is installed, the terminal of the thermistor is extended to the outside of the comb plate, the position of the concave cavity is sealed, and then a single-chip microcomputer is installed on the outside of the comb plate, and a relay is installed on the single-chip microcomputer, wherein the output end of the single-chip microcomputer is connected to an external host device with a display screen, the input end of the relay is connected to the output end of the single-chip microcomputer, and the power supply circuit of the electric heating strip installed inside the comb plate is controlled by the relay on the single-chip microcomputer; finally After that, a temperature value is set on the single-chip microcomputer as needed. When the temperature detected by the thermistor is lower than the set temperature value, it indicates that the temperature of the comb plate is low. The single-chip microcomputer controls the relay to close so that the electric heating strip is energized to generate heat. When the temperature detected by the thermistor reaches the set value, the single-chip microcomputer controls the relay to disconnect, and the electric heating strip stops working. The temperature value set on the single-chip microcomputer is a specific temperature value set according to actual needs, or a temperature range. The thermistor converts the detected numerical signal into an analog signal through a D / A converter and inputs it to the single-chip microcomputer. The single-chip microcomputer converts the received analog signal into a digital signal through an A / D converter and inputs it to the display screen of the external host device for display.

[0029] In summary, the present invention sets the position near the comb teeth inside the comb plate as a hollow structure, sets and fills quartz sand inside the hollow slot, and installs an electric heating strip inside the quartz sand, so that the quartz sand completely wraps the outside of the electric heating strip, and separately installs a concave cavity for installing a thermistor that is staggered from the position of the slot filled with quartz sand. When in use, the temperature value conducted by the electric heating strip at the comb tooth position of the comb plate can be detected, avoiding the problem of a large difference between the temperature conducted to the comb tooth position and the actual detected temperature due to direct installation in the quartz sand, thereby improving the detection accuracy, and when in use, when the temperature measured by the thermistor is lower than the set temperature value, it is said The temperature of the exposed comb plate is low, and the single-chip microcomputer controls the relay to close so that the electric heating strip is energized to generate heat to heat the comb plate, and the heat is transferred to the comb teeth position, avoiding the jamming of the relative movement position of the comb plate teeth and the steps due to ice residue in cold winter, and causing the comb plate teeth to break and damage the step tooth surface. When the temperature detected by the thermistor reaches the set value, that is, the comb plate can reach the temperature to melt the ice residue, the single-chip microcomputer controls the relay to disconnect and the electric heating strip to stop working. This design does not require manual cleaning after installation, has a high degree of intelligence, extends the service life of the comb plate, and reduces the number of inspections of the comb plate.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for heating an escalator comb plate, characterized in that: The specific heating method steps are as follows: Step 1: prepare a comb plate, and perform a groove process on the comb plate near the comb teeth. The groove body is arranged horizontally so that the inner part of the comb plate near the comb teeth is a horizontal hollow structure, and the outer part of the groove body is sealed with a sealing plate of a matching structure later; Step 2: Installation of quartz sand and electric heating strips: First, lay a layer of quartz sand on the trough inside the comb plate, then lay the prepared electric heating strip on the quartz sand, and make the interface of the electric heating strip pass through the trough to extend to the outside of the comb plate to be connected to electricity. After the electric heating strip is installed, lay another layer of quartz sand on top of the electric heating strip to cover it, so that the electric heating strip placed inside the trough is completely wrapped in the quartz sand, and then use the sealing plate to close the trough; Step 3: Open a cavity inside the comb plate near the comb teeth, which is offset from the position of the discharge heating strip slot, and install a thermistor inside the cavity; Step 4: After the thermistor is installed, the terminal of the thermistor is extended to the outside of the comb plate, the location of the cavity is sealed, and then a single-chip microcomputer is installed on the outside of the comb plate, and a relay is installed on the single-chip microcomputer; Step 5. The single chip microcomputer sets a temperature value as needed. When the temperature detected by the thermistor is lower than the set temperature value, the single chip microcomputer controls the relay to close so that the electric heating strip is energized to generate heat. When the temperature detected by the thermistor reaches the set value, the single chip microcomputer controls the relay to disconnect and the electric heating strip stops working.

2. The escalator comb plate heating method according to claim 1, characterized in that: In the step 1, the grooves of the comb plate are formed by adding a raised portion to the casting mold of the comb plate to achieve a structure with a groove body after forming, or the existing comb plate is directly die-casted after forming to form a groove body structure.

3. The escalator comb plate heating method according to claim 1, characterized in that: The quartz sand laid for the first time in the step 2 is scraped flat with a scraper after laying, so that its thickness inside the trough body is uniform. When the quartz sand is laid for the second time after the electric heating strip is installed, the quartz sand needs to be leveled again, and the installed electric heating strips must be completely wrapped in the quartz sand on both sides without being exposed.

4. The escalator comb plate heating method according to claim 1, characterized in that: In the step 3, after the thermistor is installed, the cavity where the thermistor is installed needs to be sealed with a sealing plate, and the sealing plate and the sealing plate used in the step 2 are both fixedly connected to the comb plate by screws.

5. The escalator comb plate heating method according to claim 1, characterized in that: The thermistor may be replaced by other temperature sensing devices capable of detecting temperature data.

6. The escalator comb plate heating method according to claim 1, characterized in that: In step 4, the output end of the single-chip microcomputer is connected to an external host device with a display screen, the input end of the relay is connected to the output end of the single-chip microcomputer, and the power supply circuit of the electric heating strip installed inside the comb plate is controlled by the relay on the single-chip microcomputer.

7. The escalator comb plate heating method according to claim 1, characterized in that: In the step 5, a temperature value is set on the single-chip microcomputer according to actual needs, or a temperature range is set. The thermistor converts the detected numerical signal into an analog signal through a D / A converter and inputs it to the single-chip microcomputer. The single-chip microcomputer converts the received analog signal into a digital signal through an A / D converter and outputs it to the display screen of the external host device for display.

8. The method for heating the comb plate of an escalator according to claim 1, characterized in that: The electric heating strip, relay, single chip microcomputer and thermistor used are all powered by external mains electricity or photovoltaic power generation, or the electric energy is stored in a battery and powered by the battery.