Gantry type heat storage element hedging device

Abstract

The utility model discloses a gantry type heat storage element hedging device which comprises a lathe bed, stand columns which are oppositely arranged are arranged below the lathe bed, an X-axis vertical moving unit and a Y-axis horizontal moving unit are arranged on the two sides of the lathe bed, the X-axis vertical moving unit and the Y-axis horizontal moving unit are connected with sprayers, the sprayers are connected with a water pump through a water inlet pipe, and the water pump is connected with a water pump through a water outlet pipe. X-axis vertical moving units and Y-axis horizontal moving units are arranged on the two sides of the lathe bed, opposite spraying heads, Y-axis guide rails, adaptive sliding blocks, transmission structures of racks and gears and an adjusting device in the X-axis direction are arranged on the two sides of the lower portion of the lathe bed, and stand column fixing structures and walking wheels are arranged at the bottom of the device. The high-pressure water flushing device is stable in overall structure, can bear flushing transmission of high-pressure water as high as 100 MPa, avoids the danger of manually holding the high-pressure spray head, guarantees the operation safety, greatly improves the use flexibility and convenience, can better adapt to different working scenes, enables the flushing process to be more stable and uniform, and improves the working efficiency. The flushing effect difference possibly caused by asynchronous movement is avoided, and the consistency of product quality is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of cleaning technology for heat storage components of air preheaters in power plant boilers, specifically to a whole-package external flushing cleaning device for heat storage components. Background Technology

[0002] The heat storage components of the air preheater in a power plant boiler are made of thin iron plates with stamped stripes and diagonal lines, reinforced on all sides to form a single unit. As a heat storage component, each boiler air preheater consists of thousands of components. After long-term use, dirt and dust accumulate inside and between the components due to the combined effects of ammonia nitrogen and coal ash, requiring regular cleaning. However, manual cleaning is inefficient and requires a large number of workers to work in shifts, resulting in high physical exertion and difficulty in maintaining proper water gun position for extended periods. This leads to poor ventilation inside the heat storage components, compromising cleaning quality and causing frequent incidents of injury from high-pressure water, resulting in serious consequences for families and businesses.

[0003] Utility model patent CN119259587A discloses an automatic cleaning device and method for piezoelectric ceramic rings of underwater acoustic transducers, including a gantry structure. A first and second moving part are mounted on the gantry structure. The first moving part drives the second moving part to reciprocate horizontally along a crossbeam, and the second moving part adjusts the height of the spray gun. A third moving part is located at the bottom of the gantry structure, and a ceramic ring mounting fixture is mounted on the third moving part. The third moving part drives the ceramic ring mounting fixture to move back and forth. This invention connects the spray gun to an external dry ice cleaning machine. The first moving part achieves horizontal displacement of the spray gun, the second moving part achieves vertical displacement, and the third moving part achieves back and forth movement of the ceramic ring mounting fixture. This ensures that the spray gun is precisely aligned with each ceramic ring, achieving high-efficiency, high-quality, and high-consistency automatic cleaning of the ceramic rings. However, this patent does not specifically address devices for external rinsing of entire packages of heat storage components, and its stability is insufficient, resulting in poor cleaning performance. Utility Model Content

[0004] To solve the technical problems mentioned in the background section, this utility model provides a CNC automated cleaning mechanism for external rinsing of heat storage components that is structurally stable, has good cleaning effect, and is highly efficient.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A gantry-type heat storage component flushing device includes a bed with opposing columns underneath. The bed has an X-axis vertical movement unit and a Y-axis horizontal movement unit, each connected to a nozzle. The nozzles are connected to a water pump via inlet pipes. X-axis vertical movement units and Y-axis horizontal movement units are located on both sides of the bed, and opposing nozzles are positioned on both sides of the bed. The opposing nozzles allow for simultaneous flushing of the component from both sides, resulting in more uniform and comprehensive rinsing, improved rinsing efficiency and effectiveness, and ensuring that high-pressure water covers all parts of the component, especially the interior of folds, enhancing the cleaning effect.

[0007] Preferably, the X-axis vertical moving unit and the Y-axis horizontal moving unit on both sides of the bed are connected by a crossbeam, and the nozzles on both sides of the bed move synchronously; the crossbeam connects and realizes the synchronous movement of the moving units on both sides, and the consistency and coordination of the actions of the nozzles on both sides during operation make the rinsing more uniform and stable.

[0008] Preferably, the Y-axis horizontal movement unit includes Y-axis guide rails disposed on both sides of the bed, and the crossbeam is connected to a Y-axis slider adapted to the Y-axis guide rail; the crossbeam slides on the Y-axis guide rail through the adapted Y-axis slider, providing stable and precise guidance for the horizontal movement of the crossbeam, ensuring the accuracy and smoothness of the movement.

[0009] Preferably, the bed is equipped with a rack that meshes with a gear, and Y-axis motors are installed on both sides of the crossbeam. The Y-axis motors are equipped with gears, and the Y-axis motors drive the crossbeam to move along the Y-axis direction. Slide boxes are provided at both ends of the crossbeam, and the slide boxes are connected to the nozzles. This driving and connection method can effectively transmit the power of the motor to the crossbeam, realize the precise movement of the crossbeam in the Y-axis direction, and thus drive the nozzles to the designated position for rinsing.

[0010] Preferably, the slide box is fixedly connected to an X-axis slider, which is slidably connected to an X-axis guide rail. The X-axis guide rail is fixed on both sides of the X-axis slide plate. The X-axis slider inside the slide box cooperates with the X-axis guide rail, allowing the slide box to slide flexibly in the X-axis direction, thereby adjusting the position of the nozzle in the X-axis direction and expanding the coverage area of ​​the rinsing.

[0011] Preferably, the slide box is equipped with an X-axis motor, which drives the X-axis lead screw by rotating the lead screw nut through a transmission device. The two ends of the X-axis lead screw are fixed on the X-axis slide plate. This transmission method can accurately control the movement distance and speed of the slide box in the X-axis direction, realize precise adjustment of the nozzle position, and meet different rinsing needs.

[0012] Preferably, a crossbeam is mounted on the top of the uprights opposite each other at the lower part of the bed. The bed and the crossbeam are connected by detachable bolts. The lower end of the upright is fixed to the base, and the base is equipped with wheels. The bed, the crossbeam, and the upright are designed separately for easy transportation. The base and wheels facilitate the overall movement and position adjustment of the device, improving the flexibility and convenience of the device.

[0013] Preferably, the detachable bolted connection is achieved by setting fixing clamps with mounting holes above the bed and below the column beam, respectively, and fastening the bed to the column beam with fixing bolts; this structure is easy to assemble and disassemble.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) Compared with the prior art, the present invention adopts a design of opposing spray nozzles on both sides, which can achieve all-round and no dead angle rinsing of the heat storage components, greatly improving the coverage and cleanliness of the rinsing, and avoiding the cleaning blind spots that may exist in traditional single-sided rinsing. (2) The present invention connects and synchronously drives the moving units on both sides through a crossbeam, making the rinsing process more stable and uniform, avoiding the rinsing effect differences that may be caused by asynchronous movement, and significantly improving the consistency of product quality. (3) The use of a Y-axis guide rail and a matching slider, rack and gear precision transmission structure, as well as a precise adjustment device in the X-axis direction, can achieve high-precision positioning of the nozzle on the two-dimensional plane. Compared with the prior art, it greatly improves the accuracy and repeatability of the rinsing position, and meets the fine rinsing needs of complex-shaped heat storage components. Moreover, the overall structure of the present invention is stable and can withstand high-pressure water rinsing of up to 100 MPa, avoiding the danger of manually holding the high-pressure nozzle and ensuring the safety of operation. (4) The column fixing structure and the design of the walking wheels at the bottom of the device ensure the overall stability of the device while facilitating the movement and position adjustment of the equipment. Compared with traditional fixed and immovable equipment, it greatly improves the flexibility and convenience of use and can better adapt to different work scenarios. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present utility model;

[0017] Figure 2 This is a detailed structural diagram of the Y-axis horizontal moving unit, i.e., part A, in the first embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the X-axis vertical movement unit according to the first embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the slide box 8 according to the first embodiment of this utility model;

[0020] Figure 5 This is a schematic diagram of the overall structure of the second embodiment of the present utility model;

[0021] Figure 6 This is a schematic diagram of the fixing clamp 23 and the traveling wheel 27 in the second embodiment of this utility model;

[0022] In the diagram: 1. Bed; 2. Column; 3. Reinforcing beam; 4. Rack; 5. Y-axis guide rail; 6. Crossbeam; 7. Y-axis slider; 8. Slide box; 9. Y-axis motor base; 10. Y-axis motor; 11. Gear; 12. Nozzle; 13. X-axis motor base; 14. X-axis motor; 15. Drive synchronous pulley; 16. Belt; 17. Nut; 18. Slide plate; 19. Lead screw; 20. X-axis guide rail; 21. X-axis slider; 22. Column and crossbeam; 23. Fixing clamp; 24. Fixing bolt; 25. Base; 26. Wheel seat; 27. Traveling wheel. Detailed Implementation

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] First embodiment:

[0026] A gantry-type heat storage element counter-current device includes a bed 1, and four columns 2 are fixedly installed at the four corners on both sides of the bed 1 below the bed 1.

[0027] The bed frame 1 is made of high-strength cast steel and has a rectangular frame structure with long sides on both sides and short sides at both ends. There are three horizontal reinforcing beams 3 in the middle, which are perpendicularly connected to the long sides on both sides of the bed frame 1 to enhance the overall stability of the bed frame 1.

[0028] The bed 1 has a Y-axis horizontal movement unit, including racks 4 mounted on the upper surfaces of the long sides of both sides of the bed 1 by screws. The racks 4 are elongated and slightly shorter than the length of the bed 1, with the teeth of the two racks 4 facing inwards. Y-axis guide rails 5 are mounted on the outward-facing sides of the bed 1. The length of the Y-axis guide rails 5 is slightly longer than the racks 4 but shorter than the length of the bed 1. The Y-axis guide rails 5 are perpendicular to the racks 4, and corresponding grooves are provided on the Y-axis guide rails 5.

[0029] A crossbeam 6 is provided on the inner side of the bed 1. A Y-axis slider 7, which is adapted to the Y-axis guide rail 5, is connected below the crossbeam 6. The Y-axis slider 7 can engage with the groove of the Y-axis guide rail 5, thereby driving the crossbeam 6 to move. The two ends of the crossbeam 6 are nearly triangular, and there is a groove in the middle of the crossbeam 6. The width of the groove is about half the width of the crossbeam 6. The two ends of the crossbeam 6 are fixedly connected to two sliding boxes 8 by screws, so that the sliding boxes 8 are firmly connected to the crossbeam 6.

[0030] A longitudinal through slot is provided in the middle of the crossbeam 6 along its length. The Y-axis motor base 9 is mounted above the through slot, and the Y-axis motor base 9 fits tightly against the crossbeam 6 on both sides of the through slot. The Y-axis motor base 9 and the crossbeam 6 are firmly fixed together with screws. The Y-axis motor 10 is mounted on the Y-axis motor base 9. The crossbeam 6 and the through holes at the four corners of the Y-axis motor 10 housing are connected by screws to ensure that the Y-axis motor 10 is installed firmly. The Y-axis motor base 9 has through holes at appropriate positions, which allow the output shaft of the Y-axis motor 10 to be connected to the gear 11 below the crossbeam 6. The gear 11 meshes with the rack 4. When the Y-axis motor 10 drives the gear 11 to rotate, since the rack 4 is fixed on the bed 1 and cannot move, the Y-axis motor 10 drives the crossbeam 6 and the slide box 8 to move horizontally along the direction of the rack 4.

[0031] The crossbeam 6 is connected and the Y-axis motors 10 on both sides of the bed 1 drive the crossbeam 6 to move synchronously. The Y-axis guide rail 5 and the Y-axis slider 7 play a guiding and stabilizing role for the crossbeam 6. The crossbeam 6 connects and realizes the synchronous movement of the moving units on both sides. The consistency and coordination of the actions of the nozzles 12 on both sides during operation make the rinsing more uniform and stable.

[0032] The crossbeam 6 is connected to an X-axis vertical movement unit, which includes a slide box 8. The slide box 8 is made of aluminum alloy and has a hollow structure at both the top and bottom of its four side walls. An X-axis motor base 13 is mounted on the outer surface away from the bed 1 using screws. The X-axis motor base 13 is an inverted "L" shape. A hole matching the size of the motor output shaft is opened at the center of the vertical part of the X-axis motor base 13. Screws are used to pass through the mounting holes corresponding to the motor housing and the base 25 to fix the motor below the X-axis motor base 13. The output shaft of the X-axis motor 14 faces upward. The output end of the X-axis motor 14 is securely connected to the active synchronous pulley 15 via a key to ensure that the active synchronous pulley 15 can rotate synchronously when the motor is running. The slide box 8 housing has corresponding holes. The active synchronous pulley 15 is connected to the driven synchronous pulley installed inside the slide box 8 via a belt 16 passing through the holes to achieve power transmission. The driven synchronous pulley here is a threaded nut 17. Inside the slide box 8 is a slide plate 18, which has a square tube-like structure with side walls on all four sides and a hollow center. Lead screws 19 are fixed to the upper and lower ends of the slide plate 18 facing the X-axis motor 14, and these lead screws 19 are threaded into nuts 17 inside the slide box 8. A water inlet pipe is installed inside the hollow structure of the slide plate 18, connected to a nozzle 12 mounted opposite to it below the slide plate 18. The nozzle 12 is a high-pressure nozzle. The slide box 8 has a water inlet pipe, through which high-pressure water flows into the water inlet pipe inside the slide plate 18 and finally into the nozzle 12. X-axis guide rails 20 are installed on both sides of the slide plate 18 perpendicular to the motor. X-axis sliders 21, adapted to the X-axis guide rails 20, are connected to the slide box 8 by screws. The slide box 8 achieves its vertical sliding connection with the slide plate 18 through these X-axis sliders 21. The length of the slide plate 18 is specially designed, with its upper end higher than the bed 1 and its lower end significantly lower. When the X-axis motor 14 starts, power is transmitted via the synchronous belt pulley, driving the lead screw nut 17 to rotate. Due to the threaded engagement between the lead screw nut 17 and the lead screw 19, the lead screw 19 rotates up and down, causing itself to move up and down axially. The movement of the lead screw 19, in turn, causes the slide box 8 to move up and down along the X-axis guide rail 20. At this time, the X-axis guide rail 20 acts as a guide, ensuring that the movement of the slide box 8 is smooth and accurate. During this transmission process, the slide box 8 drives the nozzle 12 to move up and down on the X-axis, and the movement range of the nozzle 12 is between the bed 1 and the ground. The nozzle 12 can perform counter-flushing cleaning on both sides of the heat storage element placed under the bed 1, thereby ensuring that the heat storage element can be thoroughly cleaned. In this gantry-type heat storage element counter-flushing device, both the X-axis motor 14 and the Y-axis motor 10 are servo motors or stepper motors. These two types of motors have excellent precision control performance and can accurately regulate the speed.Simultaneously, they can work in conjunction with encoders, enabling precise control of the nozzle 12's movement by pre-inputting detailed operating instructions into the encoder, such as the specific displacement and time for the nozzle 12 to rise and fall, as well as the distance and timing of left and right movements. For example, the nozzle 12 can be programmed to first move left and right to complete the rinsing of a specific area, and then rise or fall according to a set speed and stroke; alternatively, the nozzle 12 can be programmed to move left and right simultaneously while rising or falling to meet different cleaning needs.

[0033] Working principle:

[0034] Before cleaning, the entire device can be pushed above the heat storage element; or the heat storage element can be placed below the bed 1. When the device needs to move in the Y-axis direction, the Y-axis motor 10 is started. The Y-axis motor 10 is fixed on the Y-axis motor base 9, which is mounted above the longitudinal through slot in the middle of the crossbeam 6. Its output shaft meshes with the rack 4 mounted on the upper surface of the bed 1 through the connected gear 11. The Y-axis motor 10 drives the gear 11 to rotate. Since the rack 4 is fixed to the bed 1 and cannot move, according to the transmission principle of the gear 11 and rack 4, the Y-axis motor 10 will drive the crossbeam 6 and the connected slide box 8 to move horizontally along the rack 4 direction. Moreover, the Y-axis motors 10 on both long sides of the bed 1 work synchronously to ensure the synchronous movement of the moving units on both sides, and to ensure the stability and consistency of the entire device's movement in the Y-axis direction.

[0035] When the X-axis motor 14 starts, its output end is securely connected to the drive synchronous pulley 15 via a key, causing the drive synchronous pulley 15 to rotate synchronously. The drive synchronous pulley 15 passes through a hole in the outer shell of the slide box 8 via a belt 16 and connects to a nut 17 installed inside the slide box 8 to achieve power transmission. After the nut 17 rotates, it engages with a lead screw 19 fixed on the slide plate 18, causing the lead screw 19 to rotate up and down and move itself up and down axially. The slide box 8 is connected to the X-axis guide rails 20 perpendicular to both sides of the motor via the X-axis slider 21. The movement of the lead screw 19 ultimately drives the slide box 8 to move up and down along the X-axis guide rails 20. The X-axis guide rails 20 serve as guides, ensuring the smooth and accurate movement of the slide box 8. During the movement in the Y and X axes, since the Y-axis motor 10 and X-axis motor 14 are servo motors or stepper motors, combined with the parameters preset by the encoder, the horizontal reciprocating motion of the crossbeam 6 driving the slide box 8 and the slide box 8 driving the nozzle 12 in the Y axis, as well as the vertical movement distance, speed and time in the X axis can be precisely controlled.

[0036] With the coordinated action of the Y-axis and X-axis motors 14, the nozzle 12 can move within the range between the bed 1 and the ground according to a pre-set program. The nozzle 12 is a high-pressure nozzle; the water inlet pipe on the slide box 8 introduces high-pressure water into the water inlet pipe inside the slide plate 18, and finally into the nozzle 12. During the movement, the nozzle 12 performs counter-current cleaning on both sides of the heat storage element placed under the bed 1. Thanks to the precise control of the motors and the movement of the nozzle 12, it ensures that all parts of the heat storage element are thoroughly cleaned, thereby achieving efficient and precise cleaning.

[0037] When the preset cleaning time is reached and the cleaning work of the current batch of heat storage elements is completed, the self-locking state of the walking wheels 27 is released again, and the device is pushed to the next batch of heat storage elements to prepare for a new round of cleaning operations, realizing convenient movement and automated cleaning process.

[0038] Second embodiment:

[0039] Based on the first embodiment, a gantry-type heat storage element counter-current device includes a bed 1. At the lower part of the bed 1, four columns 2, which are arranged opposite each other at the four corners on both sides of the bed 1, are bolted to the top of a column beam 22. The column beam 22 is a square steel pipe, and the length of the column beam 22 is approximately the same as the short side length of the bed 1. The bed 1 and the column beam 22 are connected by a detachable bolt fastening structure. The detachable bolt fastening structure consists of fixing clamps 23 respectively set above the bed 1 and below the column beam 22. The fixing clamps 23 are long strip steel plates with mounting holes, and the long side length is greater than the width of the column beam 22 and the bed 1. Two fixing bolts 24 are passed through the mounting holes of the two fixing clamps 23 in sequence to clamp the bed 1 and the column beam 22, forming a tight connection. The two columns 2 on each side are connected and fixed to a base 25, and the columns 2 and the base 25 are connected by screws. The base 25 is made of a single steel plate. Four wheel seats 26 are mounted on the lower surface of the base 25, and each wheel seat 26 is bolted to a traveling wheel 27. The traveling wheel 27 uses a structure where a rubber tire encases a metal hub, providing good shock absorption and wear resistance. The traveling wheel 27 is connected to the wheel seat 26 via a self-locking pin, ensuring that it will not move accidentally during operation. This structure is used at both ends of the bed 1.

[0040] When transporting separately, the bed 1, upright beam 22, upright 2, base 25, and wheels 27 can be disassembled and transported to the cleaning site separately. Upon arrival at the site, the bed 1 can be securely fixed together with the upright beam 22, upright 2, base 25, and wheels 27 by tightening the fixing bolts 24.

[0041] In the transportation process, the modular design effectively reduces the overall transport volume and weight, lowering transportation difficulty and costs, and avoiding limitations on transportation vehicles and routes caused by excessive size and weight. It also reduces the risk of damage to the equipment due to collisions, vibrations, and other factors during transport. At the installation site, this detachable and easily assembled structure makes the installation process simpler and more efficient, requiring no specialized and complex installation equipment or technology. Ordinary workers can operate the equipment after simple training, significantly shortening the installation cycle and improving project implementation efficiency. Furthermore, if a component is damaged during use, the modular design facilitates individual disassembly and replacement of the damaged part, reducing maintenance difficulty and costs, improving maintainability, and extending the overall service life of the equipment.

[0042] Before cleaning, release the self-locking state of the traveling wheels 27 and use their good mobility to push the entire device above the heat storage element; or place the heat storage element under the bed 1, adjust the position, and lock the traveling wheels 27 to ensure that the device will not move accidentally during operation.

[0043] Other features and working principles are the same as in the first embodiment.

[0044] It should be noted that the above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gantry-type heat storage element counter-current device, comprising a bed (1), wherein the bed (1) is provided with opposing columns (2), and the bed (1) is provided with an X-axis vertical moving unit and a Y-axis horizontal moving unit, wherein the X-axis vertical moving unit and the Y-axis horizontal moving unit are connected to nozzles (12), and the nozzles (12) are connected to a water pump through a water inlet pipe, characterized in that, The bed (1) is provided with X-axis vertical movement unit and Y-axis horizontal movement unit on both sides, and the bed (1) is provided with opposing nozzles (12) on both sides below.

2. The gantry-type thermal storage element counter-flush device according to claim 1, characterized in that, The X-axis vertical moving unit and Y-axis horizontal moving unit on both sides of the bed (1) are connected by a crossbeam (6), and the nozzles (12) on both sides of the bed (1) move synchronously.

3. The gantry-type thermal storage element counter-flush device according to claim 2, characterized in that, The Y-axis horizontal movement unit includes Y-axis guide rails (5) arranged on both sides of the bed (1), and the crossbeam (6) is connected to a Y-axis slider (7) adapted to the Y-axis guide rails (5).

4. A gantry-type thermal storage element counter-flush device according to claim 3, characterized in that, Y-axis motors (10) are installed on both sides of the crossbeam (6). Gears (11) are installed on the Y-axis motors (10). A rack (4) meshing with the gears (11) is installed on the bed (1). The Y-axis motors (10) drive the crossbeam (6) to move along the Y-axis. Slide boxes (8) are provided at both ends of the crossbeam (6). The slide boxes are connected to the nozzles (12).

5. A gantry-type thermal storage element counter-flush device according to claim 4, characterized in that, The slide box (8) is fixedly connected to an X-axis slider (21), which is slidably connected to an X-axis guide rail (20). The X-axis guide rail (20) is fixed on both sides of the slide plate (18).

6. A gantry-type thermal storage element counter-flush device according to claim 5, characterized in that, The slide box (8) is equipped with an X-axis motor (14), which drives the lead screw (19) by rotating the lead screw nut (17) through the transmission device. The two ends of the lead screw (19) are fixed on the slide plate (18).

7. A gantry-type thermal storage element counter-current device according to claim 1, characterized in that, A column beam (22) is mounted on the top of the column (2) which is opposite to the lower part of the bed (1). The bed (1) and the column beam (22) are connected by detachable bolts. The lower end of the column (2) is fixed to the base (25). The base (25) is equipped with a traveling wheel (27).

8. A gantry-type thermal storage element counter-current device according to claim 7, characterized in that, The detachable bolted connection is achieved by setting a fixing clamp (23) with mounting holes above the bed (1) and below the column beam (22), and fastening the bed to the column beam (22) with fixing bolts (24).

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