Front snowman pushing device of grate cooler

Abstract

The front snowman pushing device of the grate cooler comprises a final assembly support, a power assembly is arranged on the final assembly support, the output end of the power assembly is connected with a pushing head, a bottom plate of the pushing head is arranged at the bottom of the pushing head in a sliding mode, a telescopic pushing plate structure is arranged in the pushing head, and the bottom end of the telescopic pushing plate structure abuts against the bottom plate. The telescopic push plate structure is connected with a displacement assembly, and the displacement assembly drives the telescopic push plate structure to slide in the arrangement direction of the grid plates. The displacement assembly is used for driving the telescopic push plate structures to move towards the tail ends of the grid plates, and the telescopic push plate structures stretch out step by step, so that excess materials on each step of the grid plates can be cleaned up, and the excess materials are conveyed and discharged through the conveying line body. And through cooperation of the plate collecting structure and the displacement assembly, the telescopic push plate structure automatically returns in the push head to form a structure capable of working in a reciprocating mode, the manual intervention degree is reduced, the displacement distance of the push head in the kiln when the push head returns is shortened, and the device runs more stably.

Description

Technical Field

[0001] This invention relates to the field of grate cooler technology, and more specifically to a front-mounted snow pusher device for a grate cooler. Background Technology

[0002] The grate cooler is a core piece of equipment in the cement production process that connects the rotary kiln with subsequent processes (such as clinker silos and cement mills). Its core function is to achieve multiple goals, including heat recovery, clinker quality optimization, and system energy consumption reduction, by rapidly cooling high-temperature clinker (approximately 1400°C).

[0003] In cement production, the "snowman" phenomenon is a typical failure at the feed end (fixed grate plate area) of the grate cooler, especially when processing clinker with high viscosity and high fine powder content. Essentially, fine particles and sticky substances in the high-temperature clinker accumulate at the feed end and gradually agglomerate into a massive "snowman." The expanding volume of the "snowman" compresses the fixed grate plate, causing deformation and breakage (especially with wear-resistant grates made of high-chromium cast iron). Blockage at the feed end interrupts clinker transport, leading to material accumulation in the kiln head hood, forcing a kiln shutdown for maintenance, and impacting production (a single kiln shutdown can result in losses of hundreds of thousands of yuan).

[0004] Currently, existing technologies propose using a pushing mechanism (such as invention patent application CN108775821A) to push the accumulated "snowman" towards the end of the grate and knock it down. However, for cement clinker adhering to stepped grates (see the stepped grate bed in utility model patent CN216115444U), it is difficult to achieve effective cleaning, forming dead corners and resulting in residual material. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: A snow pusher device for a grate cooler includes an assembly bracket mounted on one side of the feed end of the grate cooler. A power assembly is mounted on the assembly bracket, and a pusher head is connected to the output end of the power assembly. A base plate is slidably mounted on the bottom of the pusher head. A telescopic pusher plate structure is disposed inside the pusher head. The bottom end of the telescopic pusher plate structure abuts against the base plate. The telescopic pusher plate structure can extend downward to abut against the grate plate steps when the base plate slides out of the bottom of the pusher head. A displacement assembly is connected to the telescopic pusher plate structure, and the displacement assembly drives the telescopic pusher plate structure to slide along the arrangement direction of the grate plates to remove residual material from the grate plates step by step.

[0006] As a preferred embodiment of the present invention, the telescopic push plate structure includes an outer jacket plate, which is connected to the displacement component. Multiple inner jacket plates are connected inside the outer jacket plate by elastic elements. The multiple inner jacket plates are nested together, and adjacent inner jacket plates are connected by elastic elements to form a telescopic structure.

[0007] As a preferred embodiment of the present invention, the telescopic push plate structure is provided in multiple sets, and the multiple sets of telescopic push plate structures are linearly arranged on the displacement component. When the bottom plate slides out of the bottom of the push head, the multiple sets of telescopic push plate structures extend downward synchronously to abut against the grate plate steps whose height gradually decreases.

[0008] In a preferred embodiment of the present invention, the displacement assembly includes two end rollers, the ends of which are axially rotatably disposed on the side wall of the pusher head, and a loop chain plate is sleeved on the outside of the end rollers, the loop chain plate being movably connected to the outer sleeve plate through a connecting structure; The outer plate has horizontal perforations, and a retractable plate structure is provided on the side opposite to the horizontal perforations. The retractable plate structure is located downstream of the displacement component in the direction of movement. When the return chain plate drives the outer plate to fit onto the retractable plate structure, it triggers the connection structure to disengage the return chain plate from the telescopic push plate structure.

[0009] In a preferred embodiment of the present invention, the connecting structure includes connecting brackets disposed on both sides of the outer jacket plate. One end of the connecting bracket is fixedly disposed on the loop chain plate, and the other end is provided with a magnetic sliding key. The magnetic sliding key is slidably disposed at the end of the connecting bracket in a direction perpendicular to the end face of the outer jacket plate. The end face of the outer jacket plate is provided with a limiting hole, and a magnetic suction member is disposed in the limiting hole. The magnetic suction member drives the magnetic sliding key to slide and embed into the limiting hole to form an integral structure with the outer jacket plate.

[0010] In a preferred embodiment of the present invention, a wedge block is slidably disposed in the limiting hole. The wedge block is disposed in the limiting hole by a reset spring. The magnetic suction element is disposed at one end of the wedge block near the connecting bracket, and the other end is disposed in the through hole of the horizontal bar. The retracting plate structure is inserted into the through hole of the horizontal bar and pushes the wedge block to slide outward so as to drive the magnetic sliding key to exit the limiting hole.

[0011] In a preferred embodiment of the present invention, the retracting plate structure includes a guide plate and a movable plate. The guide plate is fixedly mounted on one side of the return chain plate via a support plate. The movable plate is located on the side of the guide plate away from the return chain plate. The end of the guide plate is located below the horizontal section of the return chain plate, and the end of the guide plate is directly opposite the crossbar through hole. The top of the outer plate has a notch for avoiding the support plate. The guide plate pushes the magnetic sliding key out of the limiting hole by embedding itself in the crossbar through hole. A booster plate is movably connected to the side of the return chain plate away from the retracting plate structure via a connecting structure. The return chain plate drives the booster plate and multiple outer plates to move from the guide plate to the movable plate.

[0012] In a preferred embodiment of the present invention, the movable plate is vertically slidably disposed within the pusher head via a drive structure. The movable plate is disposed on one side of the guide plate. The movable plate slides upward to drive the fully extended telescopic pusher structure into the upper part of the base plate. The movable plate slides downward to drive the fully extended telescopic pusher structure to press against the reset base plate and retract. The retracted telescopic pusher structure reconnects with the connecting bracket under the reverse rotation of the loop chain plate to disengage from the guide plate.

[0013] In a preferred embodiment of the present invention, the booster plate and the outer plate located on the guide plate and the movable plate are both movably engaged with the linkage groove belt by wedge blocks, and the linkage groove belt is slidably disposed on the side of the guide plate and the movable plate; The booster plate on the guide plate drives multiple telescopic pusher plate structures on the movable plate to move toward the guide plate one by one through the linkage groove belt. The telescopic pusher plate structures on the guide plate are reconnected to the connecting bracket under the action of the reverse rotating loop chain plate.

[0014] As a preferred embodiment of the present invention, a limiting groove is provided on the support plate, and a limiting slide plate is provided on one side of the movable plate, and the limiting slide plate is slidably disposed in the limiting groove. The linkage groove includes a first sliding strip slidably disposed on the side of the guide plate and a second sliding strip slidably disposed on the side of the movable plate, the first sliding strip and the second sliding strip being movably engaged by a connector.

[0015] Compared with the prior art, the present invention has the following advantages: This invention utilizes a displacement component to move a telescopic pusher structure towards the end of the grate (i.e., towards the conveyor line). The progressive extension of the telescopic pusher structure effectively cleans the residual material from each grate stage, which is then transported out by the conveyor line. Furthermore, the cooperation between the retracting plate structure and the displacement component allows the telescopic pusher structure to automatically return to its original position within the pusher head, enabling reciprocating operation. This reduces manual intervention and shortens the displacement distance of the pusher head within the kiln during return, resulting in smoother device operation. Attached Figure Description

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the pusher head of the present invention; Figure 3 This is a cross-sectional structural diagram of the pusher head of the present invention; Figure 4 This is a schematic diagram of the structure of the telescopic push plate and the stepped grate in this invention. Figure 5 This is a schematic diagram of the overall structure of the telescopic push plate structure in this invention; Figure 6 This is a schematic diagram of the component structure of the telescopic push plate structure in this invention; Figure 7 This is a cross-sectional schematic diagram of the telescopic push plate structure in this invention; Figure 8 This is a schematic diagram of the overall structure of the plate-receiving structure in this invention; Figure 9 For the present invention Figure 8 Enlarged view of point A in the middle; Figure 10 For the present invention Figure 8 Enlarged view of point B in the middle.

[0018] The labels in the diagram represent the following: 1. Grate cooler; 2. Assembly bracket; 3. Power unit; 4. Pusher head; 5. Base plate; 6. Telescopic pusher plate structure; 7. Displacement component; 8. Horizontal bar perforation; 9. Plate retraction structure; 10. Connecting bracket; 11. Magnetic sliding key; 12. Limiting hole; 13. Magnetic suction component; 14. Wedge block; 15. Return spring; 16. Drive structure; 17. Linkage groove belt; 18. Limiting slide groove; 19. Limiting slide plate; 20. Connector head; 21. Notch; 22. Pusher plate; 61. Outer plate; 62. Elastic element; 63. Inner plate; 71. End roller; 72. Return chain plate; 91. Guide plate; 92. Movable plate; 93. Support plate; 171. First sliding belt; 172. Second sliding belt. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1

[0021] This invention provides a front-mounted snow pusher device for a grate cooler, such as... Figure 1As shown, the assembly includes a general assembly bracket 2 located on one side of the feed end of the grate cooler 1, which supports the entire device. A power assembly 3 is mounted on the general assembly bracket 2 to provide power for the reciprocating motion of the pusher head 4; the output end of the power assembly 3 is connected to the pusher head 4. The power assembly 3 can be a linear drive mechanism such as a hydraulic cylinder, pneumatic cylinder, or electric push rod, and its output end is connected to the pusher head 4 to drive the pusher head 4 to move along the feed direction of the grate cooler 1.

[0022] like Figure 2 , Figure 3 and Figure 4 As shown, a base plate 5 is slidably mounted on the bottom of the pusher head 4. A telescopic pusher structure 6 is installed inside the pusher head 4. The bottom end of the telescopic pusher structure 6 abuts against the base plate 5. When the base plate 5 slides out of the bottom of the pusher head 4, the telescopic pusher structure 6 can extend downward to abut against the grate steps. The telescopic pusher structure 6 is connected to a displacement component 7. The displacement component 7 drives the telescopic pusher structure 6 to slide along the arrangement direction of the grate to remove the residual material on the grate step by step.

[0023] The base plate 5 slides into the bottom of the pusher head 43 via a slide rail or guide groove structure, and the base plate 5 is connected to a linear drive mechanism, such as a hydraulic cylinder, pneumatic cylinder, or electric cylinder push rod. Pushing the base plate 5 out of the bottom of the pusher head 43 disengages it from the bottom of the pusher head, causing the telescopic pusher plate structure 6 to fall.

[0024] The sliding direction of the base plate 5 is set according to the actual layout. For example, the base plate 5 can be as follows: Figure 2 and Figure 4 As shown, the telescopic pusher structure 6 can be exposed by sliding forward or backward in the direction of the grate steps; it can also be driven by a linear drive device to slide along the width direction of the grate to expose the telescopic pusher structure 6. If there is insufficient space in the width direction of the grate, the bottom plate 5 can be set as a telescopic structure so that when there is insufficient space in the width direction, the bottom plate is stored on the bottom side of the pusher head in an interlocking manner, thereby exposing the telescopic pusher structure.

[0025] In practical use, the pusher head 4 first moves upwards towards the grate under the drive of the power component 3, pushing down the piled-up snowman. Then, the pusher head 4 can reverse and retract, aligning the telescopic pusher structure 6 with the highest level of the grate steps. The bottom plate 5 then slides outwards, exposing the telescopic pusher structure 6. At this point, the telescopic pusher structure 6 extends downwards and abuts against the grate steps. Finally, the displacement component 7 drives the telescopic pusher structure 6 towards the conveyor line, thus enabling it to move to each grate step (and the telescopic pusher structure 6, with its telescopic function, can adapt to grate heights and abut against the grate; see [reference]). Figure 4 This allows the residual hard material on each grate to be cleaned step by step towards the end of the stepped grate, where it is then transported and discharged by the conveyor line.

[0026] After the above cleaning work is completed, the pusher 4 will be at the end of the stepped grate, and the telescopic pusher structure 6 will be in an extended state. To return the pusher 4 to its original position (back to the beginning of the stepped grate) for the next operation, two sets of power components 3 can be set up in the specific implementation. First, the pusher 4 is driven to move vertically upward, so that the extended telescopic pusher structure 6 is disengaged from the height range of the stepped grate. Then, the other set of power components 3 is used to drive the pusher to move horizontally backward, so that the pusher 4 returns to its initial position, above the beginning of the top layer of the stepped grate. Finally, the pusher 4 is driven to move downward, so that the position of the pusher 4 completely coincides with the initial position, and at the same time, the telescopic pusher structure 6 is pressed against the top of the top layer of the grate to form a compressed state, which is used for extension when the pusher 4 moves forward next time.

[0027] Alternatively, based on the above operation, after the telescopic pusher structure 6 is compressed on the top grate, the bottom plate 4 is in a position coplanar with the top grate and located above the stepped grate. Then, the power component 3 and the linear drive mechanism synchronously drive the pusher head 4 and the bottom plate 5 to move in opposite directions (i.e., the pusher head 4 extends forward and the bottom plate 5 retracts), so that the telescopic pusher structure 6 in the compressed state can transition to the bottom plate 5 and then be completely stored in the pusher head 4 for the next use.

[0028] Furthermore, in this invention, the telescopic pusher structure 6 removes the excess material on the grate to the end of the grate along the grate's arrangement direction, which not only achieves effective and thorough material removal, but also ensures that the removed excess material is located at the end of the grate and discharged by the conveyor, rather than accumulating on the side of the stepped grate and causing material jamming.

[0029] Existing technologies include cleaning mechanisms that push material from one end of the grate to the other. However, this method causes residual material to accumulate on the sides of the grate. Since the grate's sides are typically designed to match the conveyor line, resulting in small gaps between them, this method of cleaning residual material from the sides easily leads to material buildup in the gaps between the grate and the conveyor belt, making it difficult for the material to be conveyed out and affecting the cleaning effect. In contrast, cleaning from the top grate step by step downwards allows residual material to be removed to the end of the grate. A conveyor is located at the end, allowing the residual material adhering to the grate, along with the overturned snowman, to be smoothly discharged by the conveyor.

[0030] The telescopic pusher structure 6 has several implementations in the prior art. For example, multiple scrapers can be slidably connected to each other, and when the bottom plate 5 slides out of the bottom of the pusher head 4, the scrapers extend under their own weight to adapt to steps of different heights. However, in actual use, the residual material on the grate often hardens, and the scrapers, relying solely on their own weight, often cannot cut the hard material and allow it to fall to the bottom of the residual material, resulting in incomplete cleaning. Therefore, as... Figure 5 , Figure 6 and Figure 7As shown, in this embodiment, a telescopic push plate structure 6 with elastic element 62 is preferably used. Before the bottom plate 5 slides out, the elastic element 62 in the telescopic push plate structure 6 is in a compressed energy storage state. After the bottom plate 5 slides out, the inner sleeve plate 63 is ejected by the elastic potential energy of the compressed elastic element 62 when it returns to normal, so as to effectively cut the hardened residual material on the grate and enter the bottom of the residual material, thereby making the scraping more thorough.

[0031] Specifically, the telescopic pusher structure 6 includes an outer sleeve plate 61, which is connected to the displacement component 7. Multiple inner sleeve plates 63 are connected inside the outer sleeve plate 61 via elastic members 62. These inner sleeve plates 63 are interlocked, and adjacent inner sleeve plates 63 are connected by elastic members 62 to form a telescopic structure. Adjacent inner sleeve plates 63 are connected by limiting members to prevent them from disengaging when extended.

[0032] In this embodiment, the telescopic pusher structure 6 can be configured in one or more sets. However, if only one set of telescopic pusher structure 6 is configured, although it can push the excess material on the step down and extend downwards to abut against the next step during horizontal movement through its telescopic function, the pushed-down excess material will fall onto the next step and pile up with the excess material already on the next step. Therefore, during the movement of a single set of telescopic pusher structure 6, the total amount of material pushed each time will become larger and larger, and the resistance encountered during its movement will also become larger and larger.

[0033] Therefore, as a preferred embodiment, the telescopic push plate structure 6 is provided with multiple sets of telescopic push plate structures 6 linearly arranged on the displacement component 7. When the bottom plate 5 slides out of the bottom of the push head 4, the multiple sets of telescopic push plate structures 6 extend downward simultaneously to abut against the grate plate steps whose height gradually decreases.

[0034] When multiple sets of telescopic pusher structures 6 are set up, the excess material on two adjacent steps will not overlap and accumulate during the entire pushing process. Each set of telescopic pusher structures 6 only needs to push the excess material on one step at a time, making the pushing of the telescopic pusher assembly more uniform and the force on the displacement component 7 more dispersed, thereby improving the service life of the overall device.

[0035] Example 2

[0036] In the prior art, there are various ways to select the specific structure of the displacement component 7. For example, a linear drive mechanism such as an electric telescopic rod can be selected, which can drive the telescopic push rod structure to move towards the conveyor line for material cleaning.

[0037] However, in this method, the electric telescopic rod needs to drive the carrier carrying multiple telescopic pusher structures 6 forward (towards the conveyor) by twice the stroke of the stepped grate to completely clean all the stepped grate. Considering that the snowman inside the kiln is generally generated below the kiln opening, at the feed inlet of the grate cooler 1, where space is limited and most pusher structures need to be installed through the wall, the overall length and height of the pusher head 4 should not be too large, and the telescopic pusher structure 6 of a certain length should not extend too far forward.

[0038] Therefore, based on Embodiment 1, this embodiment further proposes a specific structure for the displacement component 7 and adds a receiving plate structure 9. By shortening the horizontal movement stroke of the displacement component 7 itself, the overall length of the pusher head 4 is reduced, and the forward movement stroke of the fully deployed telescopic pusher plate structure 6 is reduced, thereby better adapting to the existing kiln opening space design and preventing the pusher head 4 from contacting the kiln opening or the telescopic pusher plate structure 6 from blocking the conveyor feed inlet. At the same time, the receiving plate structure 9 is used to collect the telescopic pusher plate structure 6 that exceeds the stroke of the displacement component 7, and then the telescopic pusher plate structure 6 is compressed through a top-to-bottom movement path, so that the telescopic pusher plate structure 6 can be compressed, reset, and reused without the pusher head 4 making vertical movements.

[0039] Specifically, such as Figure 3 and Figure 4 As shown, the displacement assembly 7 includes two end rollers 71. The ends of the end rollers 71 are axially rotatably mounted on the inner wall of the push head 4. A return chain plate 72 is sleeved on the outside of the end rollers 71. The end rollers 71 are connected to a drive motor, which drives the entire return chain plate 72 to move. The return chain plate 72 is movably connected to the outer sleeve plate 61 through a connecting structure.

[0040] The outer plate 61 has a horizontal through hole 8. A retractable plate structure 9 is provided on the side directly opposite the horizontal through hole 8. The retractable plate structure 9 is located downstream of the displacement component 7 in the direction of movement. The head end of the retractable plate structure 9 is located below the horizontal section of the return chain plate 72 to receive the outer plate 61 in a timely manner. When the return chain plate 72 drives the outer plate 61 to be sleeved on the retractable plate structure 9, the connecting structure is triggered to disengage the return chain plate 72 from the telescopic push plate structure 6.

[0041] In practical use, the circular rotation of the return chain plate 72 drives the linear movement of the telescopic push plate structure 6, thereby cleaning the excess material on the stepped grate. When the telescopic push plate structure 6 completes the cleaning work and moves to the end of the return chain plate 72, just before reaching its arc section, the outer sleeve plate 61 is sleeved onto the take-up plate structure 9 through the crossbar through hole 8. At this time, the connecting structure is released from locking, causing the return chain plate 72 and the outer sleeve plate 61 to disconnect. This allows the outer sleeve plate 61 to transition from the return chain plate 72 to the take-up plate structure 9, preventing the fully extended telescopic push plate structure 6 from rotating in a circle with the return chain plate 72.

[0042] The connecting structure is used to movably connect the return chain plate 72 and the outer plate 61. Before the outer plate 61 contacts the take-up structure 9, the return chain plate 72 is fixedly connected to the outer plate 61, causing the outer plate 61 to move; after the outer plate 61 contacts the take-up structure 9, the connecting structure switches states, causing the return chain plate 72 to disconnect from the outer plate 61, and allowing the outer plate 61 to connect to the take-up structure 9.

[0043] In the prior art, the connection structure can be implemented in other ways. For example, the connection structure can be an electromagnet plate, which is set on the loop chain plate 72. The outer jacket plate 61 is provided with corresponding magnetic or metal parts that can be attracted and connected to each other. Whether the electromagnet plate is magnetic or not is related to the external control program through an electromagnetic relay.

[0044] This control program is written into the drive source that drives the return chain plate 72 to rotate. When the drive source rotates forward (driving the return chain plate 72 to rotate and push the outer plate 61 towards the take-up structure 9) to the preset position (the outer plate 61 is located on the head end of the take-up structure 9), the electromagnetic property of the electromagnet plate disappears, thereby causing the outer plate 61 to move onto the take-up structure 9 for temporary storage. When the drive source rotates in reverse (driving the return chain plate 72 to rotate in reverse) to the preset position (the electromagnet plate is located on the head end of the take-up structure 9), the electromagnetic property of the electromagnet is restored, thereby taking the outer plate 61 away from the head end of the take-up structure 9 and rearranging it on the return chain plate 72 for the next use.

[0045] While this design can automatically switch the connection between the return chain plate 72 and the outer casing plate 61, its practical application requires the orderly coordination of multiple circuit components, resulting in high operating costs. Therefore, to reduce the use of electronic components, lower overall manufacturing and maintenance costs, and improve process stability, this embodiment provides a specific connection structure.

[0046] like Figure 5 and Figure 6 As shown, the connection structure includes connecting brackets 10 disposed on both sides of the outer plate 61. One end of the connecting bracket 10 is fixedly disposed on the loop chain plate 72, and the other end is provided with a magnetic sliding key 11. The magnetic sliding key 11 is slidably disposed at the end of the connecting bracket 10 in a direction perpendicular to the end face of the outer plate 61. The end face of the outer plate 61 is provided with a limiting hole 12, and a magnetic suction member 13 is disposed in the limiting hole 12. The magnetic suction member 13 drives the magnetic sliding key 11 to slide and embed into the limiting hole 12 to form an integral structure with the outer plate 61.

[0047] A wedge block 14 is slidably disposed within the limiting hole 12. The wedge block 14 is disposed within the limiting hole 12 via a return spring 15. A slide rail can be opened on the inner wall of the limiting hole 12. The wedge block 14 is slidably disposed within the slide rail via a slider. The return spring 15 is disposed within the slide rail. The return spring 15 is connected to the slider to stabilize the wedge block 14 in a fixed position. A magnetic suction element 13 is disposed at one end of the wedge block 14 near the connecting bracket 10. The magnetic suction element 13 can be fitted inside the wedge block 14. The other end is disposed within the horizontal bar through hole 8. The retracting plate structure 9 is inserted into the horizontal bar through hole 8 and pushes the wedge block 14 to slide outward to drive the magnetic sliding key 11 out of the limiting hole 12.

[0048] The connection between the return chain plate 72 and the outer plate 61 is achieved by the magnetic sliding key 11 sliding from one end of the connecting bracket 10 into the limiting hole 12 on the outer plate 61 for a limiting connection. When the end of the connecting bracket 10 rotates past the limiting hole 12 on the end face of the outer plate 61, the magnetic attractor 13 in the limiting hole 12 will attract the magnetic sliding key 11 on this end face to move, thereby inserting it into the limiting hole 12, completing the connection between the outer plate 61 and the connecting bracket 10.

[0049] Regarding the connection between the unlocking outer plate 61 and the connecting bracket 10, when the outer plate 61 is fitted onto the retracting plate structure 9 through the horizontal bar through hole 8, the retracting plate structure 9, when inserted into the horizontal bar through hole 8, will push the wedge block 14 to slide to both sides, thereby driving the magnetic suction component 13 to push the magnetic sliding key 11 to slide outside the limiting hole 12 and be located outside the limiting hole 12. At this time, the return chain belt drives the connecting bracket 10 to rotate, thereby separating it from the end face of the outer plate 61 and forming a disconnection, thus transitioning the telescopic push plate structure 6 to the retracting plate structure 9.

[0050] Example 3

[0051] Based on Example 2, this example further optimizes the process of automatically storing and reassembling the telescopic pusher structure 6, which has completed the cleaning work, onto the return chain plate 72 for reuse.

[0052] In Embodiment 2, by setting up a loop chain plate 72 and a plate-collecting structure 9, each telescopic pusher plate structure 6 can move to the plate-collecting mechanism 9 after cleaning the grate at the lowest position, without having to continue moving forward for the cleaning of the next telescopic pusher plate structure 6. This reduces the forward travel of the overall telescopic pusher plate structure 6 and avoids the structures inside the kiln from getting too close or even interfering with each other.

[0053] However, when the entire device needs to return to its initial position to prepare for the next snowman knocking down, the pusher head 4 still needs to move upward as a whole, driving the fully extended telescopic pusher plate structure 6 to a position that is out of the height range of the grate. Then the pusher head 4 moves back laterally to the initial position, and then falls to the top of the top step grate to compress the telescopic pusher plate structure 6. Finally, the sliding of the base plate 5 retracts the telescopic pusher plate structure 6 into the pusher head 4.

[0054] This return process requires the participation of at least two sets of power components 3 to enable the pusher head 4 to move horizontally and vertically. Furthermore, the vertically moving pusher head 4 requires a larger kiln space. The high-frequency and large-amplitude movement process in a short period of time has an adverse effect on the overall stability and service life of the device.

[0055] Therefore, this embodiment proposes a specific implementation of a retractable plate structure. By cooperating with the movable connection between the loop chain plate 72 and the outer cover plate 61 proposed in Embodiment 2, the compression and storage of the telescopic push plate structure 6 is completed within the push head 4. This allows the push head 4 to return to its original position without moving upwards as a whole or being frequently driven by the power component 3. It only needs to retract along the original path of the snowman to complete the storage, reset, and reuse of the entire structure.

[0056] Specifically, such as Figure 3 and Figure 8 As shown, the retractable plate structure 9 includes a guide plate 91 and a movable plate 92. The guide plate 91 is fixedly mounted on one side of the return chain plate 72 via a bracket plate 93, which is fixedly mounted on the inner top surface of the push head 4. The movable plate 92 is located on the side of the guide plate 91 away from the return chain plate 72. The end of the guide plate 91 is directly opposite the crossbar through hole 8. The side of the return chain plate 72 away from the retractable plate structure 9 is movably connected to the push plate 22 via a connecting structure. The end of the guide plate 91 is located below the horizontal section of the return chain plate 72, so that the crossbar through hole 8 is accurately fitted onto the guide plate 91 during the horizontal movement of the telescopic push plate structure 6. Then, the connecting bracket 10 disengages from the outer sleeve plate 61 as the return chain plate 72 rotates, allowing the entire transfer transition process of the telescopic push plate structure 6 to proceed smoothly. As subsequent telescopic push plate structures 6 advance forward, the telescopic push plate structure 6 that can be pushed onto the guide plate 91 moves to the movable plate 92. For the last telescopic push plate structure 6 located on the guide plate 91, it can be as follows: Figure 3 and Figure 4 The pusher plate 22 shown is pushed into the movable plate 92.

[0057] In this invention, before the outer sleeve plate 61 enters its arc segment, the outer sleeve plate 61 moves with horizontal linear displacement driven by the return chain plate 72. If the outer sleeve plate 61 enters the arc segment of the return chain plate 72, it will rotate circumferentially, causing the position of the crossbar perforation 8 to not correspond to the guide plate 91. Therefore, the end of the guide plate 91 is positioned below the horizontal segment of the return chain plate 72, so that the outer sleeve plate 61 is fitted onto the guide plate 91 in a horizontal movement before entering the arc segment and flipping over, forming an accurate docking transition.

[0058] Therefore, in order for all telescopic push plate structures 6 to be able to move vertically upward on the movable plate 92, the side of the return chain plate 72 away from the guide plate 91 is movably connected to the push plate 22 through the connecting structure.

[0059] like Figure 3 and Figure 4 As shown, the booster plate 22 has the same overall shape and structure as the outer plate 61, and is equipped with horizontal through holes 8 and connecting structures. Its overall height is the same as that of the outer plate 61, and it does not have an inner sleeve plate 63. Therefore, during the rotation of the return chain plate 72, the booster plate 22 can be the last plate to enter the guide plate 91, thereby pushing all the telescopic pusher plate structures 6 onto the movable plate 92 for storage and integration. After the movable plate 92 compresses the telescopic pusher plate structures 6, the return chain plate 72 rotates in the opposite direction, matching the booster plate 22 first and then each telescopic pusher plate structure 6 in sequence to reassemble all the plates onto the return chain plate 72.

[0060] In addition, a notch 21 is provided at the top of the outer plate 61. The notch 21 is used to avoid the support plate 93 when the outer plate 61 moves to the guide plate 91. The guide plate 91 pushes the magnetic sliding key 11 out of the limiting hole 12 by embedding the horizontal bar through hole 8. The return chain plate 72 drives the booster plate 22 and multiple outer plates 61 to move onto the guide plate 91 and the movable plate 92 respectively.

[0061] Among them, such as Figure 3 , Figure 4 and Figure 8 As shown, the movable plate 92 is vertically slidably disposed inside the push head 4 via the drive structure 16. The movable plate 92 is disposed on one side of the guide plate 91. The drive structure 16 can be equipped with linear drive devices such as cylinders and electric telescopic rods to drive the movable plate 92 to move longitudinally within the push head 4. The movable plate 92 slides upward to drive the fully extended telescopic push plate structure 6 into the upper part of the base plate 5. Then, the drive device connected to the base plate 5 works to return the base plate 5 to the bottom of the push head 4. At this time, all the fully extended inner sleeve plates 63 are located above the base plate 5. Finally, the movable plate 92 slides downward to drive the fully extended telescopic push plate structure 6 to press against the reset base plate 5, so that each inner sleeve plate 63 is compressed. The compressed telescopic push plate structure 6 is arranged on the movable plate 92 and reconnected to the connecting bracket 10 under the reverse rotation of the return chain plate 72 to disengage from the guide plate 91.

[0062] When the return chain plate 72 rotates in the reverse direction, the end of the connecting bracket 10 on it will sweep past the limiting hole 12 on the push plate 22 along a fixed path. At this time, the magnetic suction part 13 in the limiting hole 12 attracts the magnetic sliding key 11 and slides into the limiting hole 12, forming a reconnection between the connection and the push plate 22. After that, the return chain plate 72 drives the push plate 22 to move horizontally away from the guide plate 91. The push plate 22 drives the subsequent telescopic push plate structure 6 to move through the linkage slot block. In a manner similar to step-by-step feeding, multiple telescopic push plate structures 6 are moved one by one to the guide plate 91 and brought out one by one by the return chain plate 72, thus forming a state of cyclic use.

[0063] like Figure 8 and Figure 10 As shown, the booster plate 22 and outer sleeve plate 61 located on the guide plate 91 and movable plate 92 are both movably engaged with the linkage groove belt 17 via wedge blocks 14. The linkage groove belt 17 is slidably disposed on the sides of the guide plate 91 and movable plate 92, and is limited to sliding on both sides of the guide plate 91 and movable plate 92. When sliding, it slides against the outer wall contour of the guide plate 91 and movable plate 92. The linkage groove belt 17 has multiple grooves arrayed on it. The booster plate 22 and multiple telescopic pusher plate structures 6 are connected to the linkage groove belt 17 by the head end of the wedge block 14 fitting into the groove. Therefore, when the booster plate 22 or a certain telescopic pusher plate structure 6 is driven forward by the return chain plate 72, it will drive the subsequent telescopic pusher plate structure 6 forward through the linkage groove belt 17. When the telescopic pusher plate structure 6 disengages from the guide plate 91, the head end of the wedge block 14 on it disengages from the linkage groove belt 17 (at this time, the linkage groove belt 17 slides towards the outer wall of the front end face of the guide plate 91), thus forming a separation.

[0064] The booster plate 22 located on the guide plate 91 drives multiple telescopic push plate structures 6 located on the movable plate 92 to move toward the guide plate 91 one by one through the linkage groove belt 17. The telescopic push plate structures 6 located on the guide plate 91 are reconnected to the connecting bracket 10 under the action of the reverse rotating loop chain plate 72.

[0065] Since the movable plate 92 needs to slide longitudinally, the specific structure of the linkage groove belt 17 includes a first sliding belt 171 slidably disposed on the side of the guide plate 91 and a second sliding belt 172 slidably disposed on the side of the movable plate 92. The first sliding belt 171 and the second sliding belt 172 are movably engaged by the connector 20. Figure 10 As shown, the connector 20 includes a T-shaped head disposed at the end of the second slide belt 172 and a T-shaped groove disposed at the end of the first slide belt 171. The T-shaped groove is larger than the T-shaped head so that the T-shaped head can be inserted into the T-shaped groove when it falls.

[0066] In addition, such as Figure 9As shown, in order to ensure the accuracy of the longitudinal movement path of the movable plate 92 and to ensure that the insertion of the T-shaped head is without deviation, a limiting groove 18 is provided on the support plate 93, and a limiting slide plate 19 is provided on one side of the movable plate 92. The limiting slide plate 19 is slidably disposed in the limiting groove 18, and the movable plate 92 moves up and down along a fixed path, so that the docking of the first sliding belt 171 and the second sliding belt 172 is more stable.

[0067] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A pre-snowman pushing device for a grate cooler, comprising a total assembly support (2) arranged at one side of the feed end of the grate cooler (1), wherein a power assembly (3) is arranged on the total assembly support (2), and the output end of the power assembly (3) is connected with a pushing head (4); characterized in that: a bottom plate (5) is arranged on the bottom of the pushing head (4) in a sliding manner, and a telescopic pushing plate structure (6) is arranged in the pushing head (4), wherein the bottom end of the telescopic pushing plate structure (6) abuts against the bottom plate (5), and the telescopic pushing plate structure (6) can be elongated downward when the bottom plate (5) slides out of the bottom of the pushing head (4) to abut against the steps of the grate plate, and the telescopic pushing plate structure (6) is connected with a displacement assembly (7), and the displacement assembly (7) drives the telescopic pushing plate structure (6) to slide along the arrangement direction of the grate plate to clear the excess material on the grate plate step by step.

2. The pre-snowman pushing device for a grate cooler according to claim 1, characterized in that: the telescopic pushing plate structure (6) comprises an outer sleeve plate (61), wherein the outer sleeve plate (61) is connected with the displacement assembly (7), and a plurality of inner sleeve plates (63) are connected with the inner portion of the outer sleeve plate (61) through elastic members (62), the plurality of inner sleeve plates (63) are arranged in a sleeved manner, and the adjacent inner sleeve plates (63) are connected through the elastic members (62) to form a telescopic structure.

3. The pre-snowman pushing device for a grate cooler according to claim 2, characterized in that: a plurality of groups of the telescopic pushing plate structure (6) are arranged in a linear manner on the displacement assembly (7), and when the bottom plate (5) slides out of the bottom of the pushing head (4), the plurality of groups of the telescopic pushing plate structure (6) are elongated downward synchronously to abut against the steps of the grate plate with gradually decreasing heights.

4. The pre-snowman pushing device for a grate cooler according to claim 3, characterized in that: the displacement assembly (7) comprises two end rotating rollers (71), the end heads of the end rotating rollers (71) are arranged on the side wall of the pushing head (4) in an axial rotating manner, the outer portion of the end rotating rollers (71) is sleeved with a loop chain plate (72), and the loop chain plate (72) is movably connected with the outer sleeve plate (61) through a connecting structure; a horizontal strip perforation (8) is formed in the outer sleeve plate (61), a collecting plate structure (9) is arranged on the side opposite to the horizontal strip perforation (8), the collecting plate structure (9) is arranged at a position downstream of the movement direction of the displacement assembly (7), and when the loop chain plate (72) drives the outer sleeve plate (61) to be sleeved on the collecting plate structure (9), the connecting structure is triggered to drive the loop chain plate (72) to be disconnected with the telescopic pushing plate structure (6).

5. The pre-snowman pushing device for a grate cooler according to claim 4, characterized in that: ​ ​ ​ ​ The connecting structure comprises connecting supports (10) arranged on both sides of the outer sleeve plate (61), one end of the connecting support (10) is fixedly arranged on the loop chain plate (72), and the other end is provided with a magnetic sliding key (11); the magnetic sliding key (11) is arranged at the end of the connecting support (10) in a direction perpendicular to the end face of the outer sleeve plate (61); the end face of the outer sleeve plate (61) is provided with a limiting hole (12); a magnetic attraction piece (13) is arranged in the limiting hole (12); the magnetic attraction piece (13) drives the magnetic sliding key (11) to slide and embed in the limiting hole (12) to form an integral structure with the outer sleeve plate (61).

6. The pre-located snowman pushing device of the grate cooler according to claim 5, characterized in that: The limiting hole (12) is slidably provided with a wedge block (14), the wedge block (14) is arranged in the limiting hole (12) through a return spring (15), one end of the wedge block (14) close to the connecting support (10) is provided with the magnetic attraction piece (13), and the other end is arranged in the horizontal bar perforation (8); the collecting plate structure (9) is inserted into the horizontal bar perforation (8) to extrude the wedge block (14) to slide outward to drive the magnetic sliding key (11) to exit the limiting hole (12).

7. The pre-located snowman pushing device of the grate cooler according to claim 6, characterized in that: The collecting plate structure (9) comprises a guide plate (91) and a movable plate (92); the guide plate (91) is fixedly arranged on one side of the loop chain plate (72) through a support plate (93); the movable plate (92) is arranged on the side of the guide plate (91) away from the loop chain plate (72); the end of the guide plate (91) is arranged below the horizontal section of the loop chain plate (72), and the end of the guide plate (91) is arranged opposite to the horizontal bar perforation (8); the top end of the outer sleeve plate (61) is provided with a notch (21) for avoiding the support plate (93); the guide plate (91) is inserted into the horizontal bar perforation (8) to extrude the magnetic sliding key (11) to exit the limiting hole (12); the side of the loop chain plate (72) away from the collecting plate structure (9) is movably connected with a booster plate (22) through a connecting structure; the loop chain plate (72) drives the booster plate (22) and a plurality of the outer sleeve plates (61) to move to the guide plate (91) and the movable plate (92) respectively.

8. The pre-located snowman pushing device of the grate cooler according to claim 7, characterized in that: The movable plate (92) is vertically slidably arranged in the push head (4) through the driving structure (16), the movable plate (92) is arranged on one side of the guide plate (91), the movable plate (92) is slid upward to drive the fully extended telescopic push plate structure (6) to be above the bottom plate (5), the movable plate (92) is slid downward to drive the fully extended telescopic push plate structure (6) to be pressed on the reset bottom plate (5) to be contracted, the telescopic push plate structure (6) after contraction is reconnected with the connecting support (10) under the reverse rotation of the reverse loop chain plate (72) to be taken out of the guide plate (91).

9. The pre-located snowman pushing device of the cold-bonding machine according to claim 8, characterized in that: The booster plate (22) and the outer sleeve plate (61) on the guide plate (91) and the movable plate (92) are movably connected with the linkage groove belt (17) through the wedge block (14), and the linkage groove belt (17) is slidably arranged on the side of the guide plate (91) and the movable plate (92); The booster plate (22) on the guide plate (91) drives the plurality of telescopic push plate structures (6) on the movable plate (92) to move to the guide plate (91) one by one through the linkage groove belt (17), and the telescopic push plate structure (6) on the guide plate (91) is reconnected with the connecting support (10) under the action of the reverse loop chain plate (72) rotating in reverse.

10. The pre-located snowman pushing device of the cold-bonding machine according to claim 9, characterized in that: The support plate (93) is provided with a limiting sliding groove (18), and the movable plate (92) is provided with a limiting sliding plate (19) on one side, and the limiting sliding plate (19) is slidably arranged in the limiting sliding groove (18); The linkage groove belt (17) comprises a first sliding belt (171) slidably arranged on the side of the guide plate (91) and a second sliding belt (172) slidably arranged on the side of the movable plate (92), and the first sliding belt (171) and the second sliding belt (172) are movably connected through the connecting head (20).

Images