A driving oil cylinder stroke detection device suitable for a coke guide grid of a coke guide car

Abstract

The present application belongs to the technical field of hydraulic cylinder and air cylinder equipment of coke barrier car, and discloses a driving cylinder stroke detection device suitable for coke guide grid of coke barrier car. It mainly comprises a bracket, a slidingly arranged movable box, a pull rope displacement sensor and six proximity switches of retreat to position, forward acceleration, retreat deceleration, forward deceleration, retreat acceleration and forward to position arranged on the bracket, a counterweight connected with the movable box through the pull rope of the pull rope displacement sensor, an induction detection plate installed on one side of the movable box, a first section of steel wire rope connected with the piston rod end of the driving cylinder of the coke guide grid through a first pulley and a first guide pulley set, and a DCS control system of the central control room realizing signal interlocking control of the driving cylinder to realize forward movement or retreat of the coke barrier car according to the pull rope displacement sensor and the six proximity switches. The present application has the advantages of simple installation, practicality and reliability, and is suitable for control transformation of hydraulic cylinders and air cylinders of other large and medium-sized equipment.

Description

Technical Field

[0001] This invention belongs to the technical field of hydraulic cylinders and pneumatic cylinders for coke quenching cars, specifically relating to a travel detection device for the drive cylinder of the coke guide grid of a coke quenching car. Background Technology

[0002] The coke quenching car is a crucial piece of equipment in coking production. The coke guide grid, as its core component, is primarily responsible for guiding the hot coke pushed out of the coke oven's carbonization chamber by the coke pusher into the quenching car. During the quenching process, the coke guide grid, driven by hydraulic cylinders, moves back and forth along its centerline to align with the coke oven's guide frame, preventing smoke and coke leakage that could cause dust spillage and environmental pollution. Therefore, the precise alignment and stable operation of the coke guide grid are vital for coke oven production.

[0003] Currently, the following problems easily occur during the coke-blocking process of the coke guide grid: 1. The stroke limit of the coke guide grid and the cable are easily damaged by the high temperature of the red-hot coke or burned by the flames of the red-hot coke, resulting in equipment accidents; 2. Inaccurate alignment and connection between the coke guide grid and the furnace frame during the coke pushing process can easily lead to smoke and serious coke leakage, increasing the labor intensity of workers, causing dust overflow, and polluting the environment; 3. Due to various factors such as climate change, furnace age, and thermal maintenance, all furnace frames of the coke oven are not in the same horizontal position, causing large deviations, which makes it very difficult to accurately align the coke guide grid, and is very likely to cause equipment damage accidents and production stoppages; 4. Insufficient stroke of the coke guide grid cylinder leads to serious coke leakage, while excessive stroke of the cylinder damages the cylinder, the sealing ring, and the inclined edge of the coke guide grid; 5. Due to the characteristics of the cylinder stroke limit, it is impossible to accurately control the stroke of the cylinder, resulting in the inability to achieve precise equipment alignment.

[0004] However, regarding the hydraulic cylinder stroke detection and transformation technology of the coke guide grid, there is no relevant literature record at home and abroad. However, in the existing technology, in the technical transformation of the coke guide grid of the coke pushing car, we only retrieved that Chinese Patent CN202120166563.3 discloses a stable and reliable locking device for the coke guide grid of the coke pushing car. This solution is mainly designed for the problems that the coke guide grid is not completely locked or unstable due to the structural defects of the locking mechanism in the coke pushing car, resulting in the backward movement and jamming of the coke guide grid during the coke pushing process. However, it does not involve the problems of serious mechanical wear, short service life and frequent replacement of the matching limit switch of the hydraulic cylinder of the coke guide grid in the high-temperature working condition of the coke pushing car. Therefore, this publicly disclosed document cannot be used as the closest prior art to the present invention. In addition, we conducted a separate search for the technical transformation of the cylinder stroke control. Taking Chinese Patent CN201310215165.6 which discloses a stroke adjustment mechanism for the ejector cylinder of a hydraulic press as an example, the problem actually solved by this publicly disclosed patent document is the inconvenience caused by manually adjusting the position of the proximity sensor from the bottom of the machine when the hydraulic press produces different products with different molds. For this reason, this cylinder stroke adjustment mechanism uses a wire rope cable mechanism to lead the sensing object (set screw) to the rear of the machine, and at the same time, the proximity sensor can also be installed at the rear of the machine to replace the traditional sensing object and switch mounting plate installed at the bottom of the machine. In actual use, when the equipment changes the mold, the limit position needs to be adjusted every time, and the ejection stroke of the ejector cylinder is adjusted by continuously adjusting the position of the proximity sensor. This control design of single-line in-place stop not only cannot meet the industrial automation programming requirements of more complex working conditions, but also cannot display the specific distance of the cylinder stroke; in addition, the single limit of the entire cylinder stroke has relatively low control accuracy, safety and reliability, and the installation angle of the cylinder can only be maintained at 90° vertical installation, which cannot be applied to a wider range of application scenarios. Especially for the coke pushing car facing the working environment of high temperature and dust, this cylinder stroke adjustment mechanism simply cannot adapt; furthermore, due to various factors such as climate change, furnace age, and thermal engineering maintenance of the furnace frame of the coke oven, there will be a large deviation in the horizontal position, and this set of solutions cannot accurately align the coke guide grid with the furnace frame of the coke oven when applied to the hydraulic cylinder of the coke guide grid.

[0005] Regarding the problems of serious mechanical wear and short service life of the matching limit switch of the hydraulic cylinder of the above-mentioned coke guide grid in the high-temperature and dusty working environment, as well as the losses brought to the enterprise due to the reduction of coke production caused by the frequent replacement of the limit switch and the increased burden on the enterprise production caused by the cleaning of coke dust. There is an urgent need to separately design an implementation plan with automation, visualization, guaranteed reliability and safety for the hydraulic cylinder stroke control of the coke guide grid of the coke pushing car, so as to solve the problems of accurate alignment and stable operation of the coke guide grid. Summary of the Invention

[0006] In the background technology, the limit switches used as electrical components for positioning the coke guide grid in forward and backward movements suffer from severe mechanical wear and short service life due to the high-temperature and dusty operating environment. This problem has not been fundamentally solved, leading to damage to the coke guide grid cylinders and increased maintenance and replacement time caused by limit switch failures. This results in losses in coke production and frequent cleanup work due to coke dust accumulation. Our company, based on the on-site operating conditions of the coke quenching car and the requirements of the coke guide grid operation, has added a separate control system to the hydraulic cylinders of the coke guide grid. This control system transmits the stroke of the hydraulic cylinders to the pulley assembly via a wire rope, and then uses a position encoder to precisely control the position of the pulley assembly by pulling a counterweight. Simultaneously, multiple photoelectric limit switches are added to achieve multi-stage start / stop, forward / reverse acceleration / deceleration control of the hydraulic cylinders. Based on this, the present invention proposes a stroke detection device for the drive cylinders of the coke guide grid in a coke quenching car.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a drive cylinder stroke detection device suitable for the coke guide grid of a coke quenching car, which mainly includes a bracket installed on the frame of the coke quenching car and a movable box slidably mounted on it. A pull rope displacement sensor and a detection proximity switch group are respectively installed on the bracket. The pull rope displacement sensor is installed at the bottom of the bracket, and the detection proximity switch group is installed on one side of the bracket, and from bottom to top includes a backward positioning proximity switch, a forward acceleration proximity switch, a backward deceleration proximity switch, a forward deceleration proximity switch, a backward acceleration proximity switch, and a forward positioning proximity switch. The pull rope of the pull rope displacement sensor is connected to the movable box through a counterweight, and the detection proximity switch group is located on one side of the movable box corresponding to the detection proximity switch group. The proximity switch assembly is equipped with a sensing detection plate. A first pulley is installed on the top of the movable box. One end of the first section of steel wire rope is fixed to the top of the bracket, and the other end of the first section of steel wire rope passes through the first pulley and the first guide pulley assembly and is connected to the piston rod end of the drive cylinder on one side of the coke quenching grid. The first guide pulley assembly is installed on the frame of the coke quenching car. The signal output terminals of the rope displacement sensor and the six proximity switches in the proximity switch assembly are respectively connected to the DCS control system in the central control room of the coke quenching car. The edit position signal of the rope displacement sensor and the instantaneous sensing action signal of the six proximity switches in the proximity switch assembly form an interlock control through the DCS control system in the central control room, thereby precisely controlling the drive cylinder to realize the forward or backward movement of the coke quenching car.

[0008] As a further explanation and limitation of the above technical solution, the first guide pulley group includes a first vertical steering pulley, a first guide pulley, and a horizontal steering pulley. A first section of steel wire rope passes through the first pulley, the first vertical steering pulley, the first guide pulley, and the horizontal steering pulley in sequence and is connected to the piston rod end of the driving cylinder on one side of the focus grid. The first section of steel wire rope changes the direction of its force from the Z-axis direction to the X-axis direction through the first vertical steering pulley, and changes the direction of its force from the X-axis direction to the Y-axis direction parallel to the movement of the focus grid through the horizontal steering pulley.

[0009] As a further supplement to the above technical solution, the first guide pulley includes at least one and is located between the first vertical steering pulley and the horizontal steering pulley. The first guide pulley is used to ensure that the first section of wire rope runs smoothly at the two turning points and to avoid jamming due to the installation position deviation of the first vertical steering pulley and the horizontal steering pulley.

[0010] As a further explanation and limitation of the above technical solution, the support includes two frame beams and two columns fixedly connected between them. At least one fixed beam is fixedly connected to one of the columns. The fixed beam and the two frame beams together install the support on the frame of the coke chock car. An installation plate is fixedly connected to the other column. The reversing position proximity switch, the forward acceleration proximity switch, the reversing deceleration proximity switch, the forward deceleration proximity switch, the reversing acceleration proximity switch, and the forward position proximity switch are sequentially installed on the installation plate. A fixed seat is provided on the frame beam at the bottom of the support. The fixed seat is used to fix the pull rope displacement sensor. A through hole is provided on the frame beam at the top of the support. The through hole is used for the first section of steel wire rope to pass through vertically. Tracks are fixedly connected to the inner sides of the two columns respectively.

[0011] As a further explanation and limitation of the above technical solution, the movable box includes a box body and rollers corresponding to the track installed on its two sides respectively. The sensing detection plate is installed on one side of the box body close to the detection proximity switch group, and the first pulley is installed on the top of the box body.

[0012] As a further supplement to the above technical solution, at least two second pulleys are provided on the frame beam at the top of the support. The number of first pulleys is one more than the number of second pulleys. The other end of the first section of steel wire rope passes through the first pulley and the second pulley in sequence, and then continues to pass through the first vertical steering pulley, the first guide pulley and the horizontal steering pulley in sequence to connect with the piston rod end of the driving cylinder on one side of the coking grid, thereby forming a pulley group transmission system to reduce the vertical movement stroke of the movable box.

[0013] As a further explanation of the above technical solution, at least one U-shaped crossbeam is fixedly connected between the two columns, and the U-shaped crossbeam is used to enhance the stability of the support.

[0014] As a further supplement to the above technical solution, it also includes a second section of wire rope. One end of the second section of wire rope is connected to the first section of wire rope through a wire rope buckle, and the other end of the second section of wire rope is connected to the piston rod end of the drive cylinder on the other side of the coke guide grid through a second guide pulley group. The second guide pulley group is installed on the frame of the coke quenching car.

[0015] As a further explanation and limitation of the above technical solution, the second guide pulley group includes a second guide pulley, a second vertical steering pulley, and a third vertical steering pulley. The second section of steel wire rope passes through the second guide pulley, the second vertical steering pulley, and the third vertical steering pulley in sequence and is connected to the piston rod end of the drive cylinder on one side of the focus grid. After passing through the second guide pulley and the second vertical steering pulley and crossing the focus grid in sequence, the second section of steel wire rope changes the direction of its force from the X-axis direction to the Z-axis direction. After passing through the third vertical steering pulley, the direction of its force changes from the Z-axis direction to the Y-axis direction, which is parallel to the movement of the focus grid.

[0016] As a further explanation and limitation of the above technical solution, a hanging ring and a pull ring are fixedly connected to the top and bottom of the counterweight block, respectively, and a hook is fixedly connected to the bottom of the movable box. The counterweight block is hung on the hook through the hanging ring and connected to the movable box. The pull rope of the pull rope displacement sensor is connected to the counterweight block through the pull ring.

[0017] Compared with the prior art, the present invention has the following advantages after implementation of this technology: 1. This invention connects the piston rod end of the drive cylinder on one side of the coke guide grid to the movable box via a steel wire rope. Simultaneously, from bottom to top, a reverse positioning proximity switch, a forward acceleration proximity switch, a reverse deceleration proximity switch, a forward deceleration proximity switch, a reverse acceleration proximity switch, and a forward positioning proximity switch are sequentially installed on the support. The pull rope of the pull rope displacement sensor is connected to the movable box via a counterweight. A sensing detection plate is installed on one side of the movable box to trigger instantaneous sensing signals from each proximity switch. The DCS control system in the central control room precisely controls the drive cylinder to move the coke quenching car forward or backward based on these instantaneous sensing signals. On-site operators can simultaneously display and control the specific extension and retraction positions of the cylinder stroke through the touchscreen computer screen of the DCS control system in the central control room. Alarms can also be set for insufficient or excessive cylinder stroke. This achieves multi-stage control of the cylinder's start / stop, and forward / reverse acceleration / deceleration.

[0018] 2. This invention achieves interlocking control between the pull-rope displacement sensor and each proximity switch, with each serving as a backup for the others, thus realizing precise control of the cylinder stroke and accurate equipment positioning. Simultaneously, it greatly improves the reliability and safety of the cylinder stroke detection device.

[0019] 3. This invention uses the combined action of wire rope and guide pulley system to display the stroke variation of the drive cylinder through the movement distance of the movable box. Simultaneously, the pulley system transmission system reduces the vertical movement of the movable box. Therefore, this invention avoids both severe coke leakage due to insufficient cylinder stroke and damage to the cylinder, seals, and guide grid bevel due to excessive cylinder stroke. It also prevents equipment accidents caused by the guide grid stroke limit and cables being easily damaged by high-temperature red-hot coke or flames.

[0020] 4. This invention connects the first section of steel wire rope to the second section of steel wire rope via a steel wire rope buckle, and with the cooperation of the second guide pulley group, it realizes synchronous detection of the driving cylinders on both sides of the coke guide grid. This makes the electrical control equipment easier to inspect and maintain, reduces the equipment failure rate, and further improves the safe operation and effective working rate of the equipment.

[0021] 5. This invention can achieve precise alignment between the positions of different furnace frames and the coke guide grid, with the error range precisely controlled within 0.1mm. This effectively avoids difficulties in precise alignment caused by climate changes and variations in the furnace body, further eliminating coke leakage and smoke overflow during coke handling.

[0022] 6. This invention has the advantages of simple installation, practicality, and reliability, and is applicable to the modification of hydraulic cylinders and pneumatic cylinders in other large and medium-sized equipment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention during on-site installation; Figure 2 This is a schematic diagram of the structure of the hydraulic cylinder stroke detection device in this invention; Figure 3 This is a schematic diagram of the assembly of the hydraulic cylinder stroke detection device in this invention; Figure 4 This is a schematic diagram of the support structure in this invention; Figure 5 This is a schematic diagram showing the connection between the movable box, the counterweight, and the rope displacement sensor in this invention; Figure 6 This invention relates to a DCS control system interface diagram for the maximum control stroke of the drive cylinder in on-site modification. Figure 7 This invention relates to a DCS control system interface diagram for the minimum control stroke of the drive cylinder in on-site modification.

[0024] In the diagram: 1. Support frame; 2. Movable box; 3. Counterweight; 4. Cable displacement sensor; 5. First pulley; 6. First guide pulley group; 7. Second guide pulley group; 8. First vertical steering pulley; 9. First guide pulley; 10. Horizontal steering pulley; 11. First section of wire rope; 12. Second pulley; 13. Second guide pulley; 14. Second vertical steering pulley; 15. Third vertical steering pulley; 16. Second section of wire rope; 17. Wire rope buckle; 18. Reverse positioning proximity switch; 19. Forward acceleration proximity switch; 20. Reverse deceleration proximity switch; 21. Forward deceleration proximity switch; 22. Reverse acceleration proximity switch; 23. Forward positioning proximity switch; 24. Induction detection plate; 25. Hook; 26. Hanging ring; 27. Pull ring; 28. Fixed base; 29. ​​Drive cylinder; 30. Coke chute.

[0025] The support system includes: frame beam 101, column 102, mounting plate 103, track 104, perforation 105, U-shaped beam 106, and fixed beam 107.

[0026] The activity box includes: box body 201, and wheels 202. Detailed Implementation

[0027] To further illustrate the technical solution of the present invention, the following description is in conjunction with the appendix. Figures 1 to 7 Based on the implementation of this technical improvement project, the present invention will be further illustrated through three embodiments.

[0028] As attached Figures 1 to 3 As shown, a travel detection device for the drive cylinder of a coke guide grid in a coke quenching car mainly includes a bracket 1, a movable box 2, a counterweight 3, a rope displacement sensor 4, a first pulley 5, a first section of steel wire rope 11, and a detection proximity switch group. The first section of steel wire rope 11 consists of a backward positioning proximity switch 18, a forward acceleration proximity switch 19, a backward deceleration proximity switch 20, a forward deceleration proximity switch 21, a backward acceleration proximity switch 22, and a forward positioning proximity switch 23. Example 1

[0029] As attached Figures 1 to 5As shown, this embodiment mainly uses a single-sided drive cylinder modification scheme for the coke guide grid. Based on the on-site modification process, we describe the implementation of this scheme in detail: The support 1 includes two frame beams 101 and two columns 102 fixedly connected between them. At least one U-shaped beam 106 is fixedly connected between the two columns 102 to enhance the stability of the support 1. At least one fixed beam 107 is fixedly connected to one of the columns 102. The fixed beam 107 and the two frame beams 101 together mount the support 1 on the frame of the coke quenching car 30. The movable box 2 includes a box body 201 and rollers 202 installed on its two sides. The movable box 2 is slidably connected to the track 104 of the support 1 by the rollers 202 on both sides. The two tracks 104 are fixedly connected to the inner sides of the two columns 102 respectively. A mounting plate 103 is fixedly connected to another column 102. The backward positioning proximity switch 18, forward acceleration proximity switch 19, backward deceleration proximity switch 20, forward deceleration proximity switch 21, backward acceleration proximity switch 22, and forward positioning proximity switch 23 are installed sequentially from bottom to top on the mounting plate 103. A sensing detection plate 24 is installed on one side of the housing 201, close to the detection proximity switch group, to respond to the six proximity switches by detecting the movement position of the movable box 2 and generate instantaneous sensing action signals. A fixed seat 28 is provided on the frame beam 101 at the bottom of the bracket 1, and the pull rope displacement sensor 4 is fixedly installed on the fixed seat 28. A hanging ring 26 and a pull ring 27 are fixedly connected to the top and bottom of the counterweight 3, respectively. A hook 25 is fixedly connected to the bottom of the movable box 2 (i.e., housing 201). The counterweight 3 is hung on the hook 25 through the hanging ring 26 and connected to the movable box 2. The pull rope of the pull rope displacement sensor 4 is connected to the counterweight 3 through the pull ring 27. One end of the first section of wire rope 11 is fixed to the frame beam 101 located at the top of the support 1. The other end of the first section of wire rope 11 passes sequentially through the first pulley 5, the first vertical steering pulley 8, the first guide pulley 9, and the horizontal steering pulley 10, and is connected to the piston rod end of the drive cylinder 29 on one side of the coking grid. The first section of wire rope 11 changes the direction of its force from the Z-axis to the X-axis through the first vertical steering pulley 8, and changes the direction of its force from the X-axis to the Y-axis parallel to the movement of the coking grid through the horizontal steering pulley 10. A through hole 105 is provided on the frame beam 101 located at the top of the support 1, which facilitates the vertical passage of the first section of wire rope 11. The first pulley 5 is installed on the top of the housing 201, and the first guide pulley group 6 is installed on the frame of the coking car 30.In this embodiment, the signal output terminals of the rope displacement sensor 4 and the six proximity switches in the proximity switch group are respectively connected to the DCS control system in the central control room of the coke quenching car. The edit position signal of the rope displacement sensor 4 and the instantaneous sensing action signal of the six proximity switches in the proximity switch group are interlocked through the DCS control system in the central control room, thereby accurately controlling the drive cylinder 29 to realize the forward or backward movement of the coke quenching car.

[0030] As a preferred embodiment of the above embodiments, the first guide pulley 9 includes at least one and is located between the first vertical steering pulley 8 and the horizontal steering pulley 10. The first guide pulley 9 is used to ensure that the first section of wire rope 11 runs smoothly at the two turning points and avoids jamming due to the installation position deviation of the first vertical steering pulley 8 and the horizontal steering pulley 10. Example 2

[0031] As attached Figure 1 and 2 As shown, in order to ensure the safe operation of the equipment and improve its reliability, safety, and effective operating rate, this embodiment mainly focuses on the modification scheme of the driving cylinders on both sides of the coke guide grid. Based on the first embodiment, this embodiment also includes a second section of wire rope 16 and a second guide pulley group 7. The second guide pulley group 7 is installed on the frame of the coke quenching car 30. The second guide pulley group 7 includes a second guide pulley 13, a second vertical steering pulley 14, and a third vertical steering pulley 15. The specific implementation method of this embodiment is described in detail below: One end of the second section of wire rope 16 is connected to the first section of wire rope 11 through a wire rope buckle 17. The other end of the second section of wire rope 16 passes through the second guide pulley 13, the second vertical steering pulley 14, and the third vertical steering pulley 15 in sequence and is connected to the piston rod end of the driving cylinder 29 on one side of the coke guide grid. The function of the second guide pulley group is to change the direction of the force of the second section of steel wire rope 16 from the X-axis direction to the Z-axis direction after passing through the second guide pulley 13 and the second vertical steering pulley 14 in sequence across the focus grid, and then change the direction of the force of the second section of steel wire rope 16 from the Z-axis direction to the Y-axis direction parallel to the movement of the focus grid through the third vertical steering pulley 15. Example 3

[0032] As attached Figure 2 and 3As shown, in order to precisely control the extension and retraction position of the hydraulic cylinder stroke and avoid the technical modification difficulties caused by excessive hydraulic cylinder stroke leading to a long moving distance of the movable box, we added a pulley block transmission system in the above embodiment one or two. The main scheme is as follows: We set at least two second pulleys 12 on the frame beam 101 located at the top of the support 1, and the number of first pulleys 5 is one more than the number of second pulleys 12. The other end of the first section of steel wire rope 11 passes alternately through the first pulley 5 and the second pulley 12 in sequence, and then continues to pass through the first vertical steering pulley 8, the first guide pulley 9 and the horizontal steering pulley 10 in sequence to connect with the piston rod end of the drive cylinder 29 on one side of the guide grid, thereby forming a pulley block transmission system to reduce the vertical movement stroke of the movable box 2.

[0033] Its working principle is as follows: First, based on the movement process of the coke guide grid, we calculate the corresponding movement positions of the movable box 2 during each stage of the drive cylinder's stroke (i.e., the installation positions of the six proximity switches: reversing to position proximity switch 18, forward acceleration proximity switch 19, reversing deceleration proximity switch 20, forward deceleration proximity switch 21, reversing acceleration proximity switch 22, and forward to position proximity switch 23). Finally, the position signals generated by the extension of the rope of the pull rope displacement sensor 4 corresponding to each movement position of the movable box 2 are manually input into the DCS control system in the central control room. During the movement of the coke guide grid, the extension or retraction of the drive cylinder 29 is transmitted through the first section of the steel wire rope 11 to the counterweight 3, causing the movable box 2 to move up and down. At the same time, the pull rope of the pull rope displacement sensor 4 is pulled out or retracted synchronously. When the instantaneous sensing action signals of the six proximity switches in the detection proximity switch group are uploaded to the DCS control system in the central control room and form an interlocking control with the preset position signals, the DCS control system in the central control room will generate corresponding action commands to precisely control the drive cylinder 29 to achieve the forward or backward movement of the coke quenching car. (See attached...) Figure 6 and 7 As shown, on-site operators can simultaneously display and control the specific extension and retraction positions of the hydraulic cylinders on the touchscreen of the DCS system in the central control room, enabling multi-stage control of the cylinders' start / stop, forward / reverse acceleration / deceleration. Simultaneously, alarms can be set via the touchscreen of the DCS system in the central control room for insufficient or excessive cylinder stroke, ensuring safe equipment operation. After implementing this technology, our company has achieved precise alignment between the positions of different furnace frames and the coke guide grids, with the error range accurately controlled within 0.1mm. This effectively solves the difficulty of precise alignment caused by climate changes and variations in the furnace body, preventing the recurrence of coke leakage and smoke overflow.

[0034] The foregoing has shown and described the main features and advantages of the present invention. It will be apparent to those skilled in the art that the specific embodiments of the present invention are not limited to the details of the exemplary embodiments described above. Furthermore, without departing from the spirit or essential characteristics of the present invention, the inventive concept and design ideas of the present invention can be implemented in other specific forms, and these should be equivalently included within the protection scope disclosed in the technical solutions of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the present invention is defined by the appended claims rather than the foregoing description, and thus all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included within the present invention.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for detecting the stroke of a drive cylinder for a coke guide grid in a coke quenching car, characterized in that: The system includes a bracket (1) mounted on the frame of the coke chock car (30) and a movable box (2) slidably mounted thereon. A pull rope displacement sensor (4) and a detection proximity switch group are respectively mounted on the bracket (1). The pull rope displacement sensor (4) is mounted on the bottom of the bracket (1). The detection proximity switch group is mounted on one side of the bracket (1) and includes, from bottom to top, a backward positioning proximity switch (18), a forward acceleration proximity switch (19), a backward deceleration proximity switch (20), a forward deceleration proximity switch (21), a backward acceleration proximity switch (22), and a forward positioning proximity switch (23). The pull rope of the pull rope displacement sensor (4) is connected to the movable box (2) through a counterweight (3). A sensing detection plate (24) is mounted on one side of the movable box (2) corresponding to the detection proximity switch group. A first pulley (5) is provided on the top of the active box (2). One end of the first section of steel wire rope (11) is fixed on the top of the bracket (1). The other end of the first section of steel wire rope (11) passes through the first pulley (5), the first guide pulley group (6) and is connected to the piston rod end of the drive cylinder (29) on one side of the coke guide grid. The first guide pulley group (6) is installed on the frame of the coke quenching car (30). The signal output terminals of the rope displacement sensor (4) and the six proximity switches in the detection proximity switch group are respectively connected to the DCS control system in the central control room of the coke quenching car. The edit position signal of the rope displacement sensor (4) and the instantaneous sensing action signal of the six proximity switches in the detection proximity switch group form an interlock control through the DCS control system in the central control room, thereby accurately controlling the drive cylinder (29) to realize the forward or backward movement of the coke quenching car. The first guide pulley group (6) includes a first vertical steering pulley (8), a first guide pulley (9), and a horizontal steering pulley (10). The other end of the first section of wire rope (11) passes through the first pulley (5) and the second pulley (12) in sequence, and then continues to pass through the first vertical steering pulley (8), the first guide pulley (9), and the horizontal steering pulley (10) in sequence to connect with the piston rod end of the drive cylinder (29) on one side of the guide grid, thereby forming a pulley group transmission system to reduce the up and down movement stroke of the movable box (2). The first section of wire rope (11) changes the direction of its force from the Z-axis direction to the X-axis direction through the first vertical steering pulley (8), and changes the direction of its force from the X-axis direction to the Y-axis direction parallel to the movement of the guide grid through the horizontal steering pulley (10).

2. The device for detecting the stroke of the driving cylinder of a coke guide grid for a coke quenching car according to claim 1, characterized in that: The first guide pulley (9) includes at least one and is located between the first vertical steering pulley (8) and the horizontal steering pulley (10). The first guide pulley (9) is used to ensure that the first section of wire rope (11) runs smoothly at the two turning points and avoids jamming due to the installation position deviation of the first vertical steering pulley (8) and the horizontal steering pulley (10).

3. A device for detecting the stroke of a drive cylinder for a coke guide grid on a coke quenching car, as described in any one of claims 1 to 2, characterized in that: The support (1) includes two frame beams (101) and two columns (102) fixedly connected between them. At least one fixed beam (107) is fixedly connected to one of the columns (102). The fixed beam (107) and the two frame beams (101) together mount the support (1) on the frame of the coke chute (30). A mounting plate (103) is fixedly connected to the other column (102). The reversing position proximity switch (18), the forward acceleration proximity switch (19), the reversing deceleration proximity switch (20), and the forward deceleration proximity switch are also included. The proximity switch (21), the reverse acceleration proximity switch (22), and the forward positioning proximity switch (23) are installed sequentially on the mounting plate (103). A fixing seat (28) is provided on the frame beam (101) at the bottom of the bracket (1). The fixing seat (28) is used to fix the pull rope displacement sensor (4). A through hole (105) is provided on the frame beam (101) at the top of the bracket (1). The through hole (105) is used for the first section of steel wire rope (11) to pass through vertically. Rails (104) are fixedly connected to the inner sides of the two columns (102).

4. The device for detecting the stroke of the driving cylinder of a coke guide grid for a coke quenching car according to claim 3, characterized in that: The movable box (2) includes a box body (201) and rollers (202) corresponding to the track (104) installed on its two sides respectively. The sensing detection plate (24) is installed on one side of the box body (201) close to the detection proximity switch group. The first pulley (5) is installed on the top of the box body (201).

5. The device for detecting the stroke of the driving cylinder of a coke guide grid for a coke quenching car according to claim 3, characterized in that: At least two second pulleys (12) are provided on the frame beam (101) at the top of the bracket (1). The number of first pulleys (5) is one more than the number of second pulleys (12). The other end of the first section of wire rope (11) passes through the first pulley (5) and the second pulley (12) in sequence, and then continues to pass through the first vertical steering pulley (8), the first guide pulley (9) and the horizontal steering pulley (10) in sequence to connect with the piston rod end of the drive cylinder (29) on one side of the guide grid, thereby forming a pulley group transmission system to reduce the up and down movement stroke of the movable box (2).

6. The device for detecting the stroke of the driving cylinder of a coke guide grid for a coke quenching car according to claim 3, characterized in that: At least one U-shaped beam (106) is fixedly connected between the two columns (102), and the U-shaped beam (106) is used to enhance the stability of the support (1).

7. A device for detecting the stroke of a drive cylinder for a coke guide grid on a coke quenching car, according to any one of claims 1 to 2 or any one of claims 4 to 6, characterized in that: It also includes a second section of wire rope (16), one end of which is connected to the first section of wire rope (11) through a wire rope buckle (17), and the other end of which is connected to the piston rod end of the drive cylinder (29) on the other side of the coke grid through a second guide pulley group (7). The second guide pulley group (7) is installed on the frame of the coke quenching car (30).

8. The device for detecting the stroke of a drive cylinder suitable for a coke guide grid in a coke quenching car according to claim 7, characterized in that: The second guide pulley group (7) includes a second guide pulley (13), a second vertical steering pulley (14) and a third vertical steering pulley (15). The second section of wire rope (16) passes through the second guide pulley (13), the second vertical steering pulley (14) and the third vertical steering pulley (15) in sequence and is connected to the piston rod end of the drive cylinder (29) on one side of the guide grid. After the second section of wire rope (16) passes through the second guide pulley (13) and the second vertical steering pulley (14) in sequence and crosses the guide grid, the direction of its force is changed from the X-axis direction to the Z-axis direction. The direction of its force is changed from the Z-axis direction to the Y-axis direction parallel to the movement of the guide grid through the third vertical steering pulley (15).

9. A drive cylinder stroke detection device for a coke guide grid of a coke quenching car according to any one of claims 1 to 2, 4 to 6, or 8, characterized in that: Hanging rings (26) and pull rings (27) are fixedly connected to the top and bottom of the counterweight (3), respectively. A hook (25) is fixedly connected to the bottom of the movable box (2). The counterweight (3) is hung on the hook (25) through the hanging ring (26) and connected to the movable box (2). The pull rope of the pull rope displacement sensor (4) is connected to the counterweight (3) through the pull ring (27).

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