A device and method for replacing a car body of a ring cooler car

Abstract

A device for replacing a ring cooling machine trolley body is located between the trolley body and the trolley track, the device comprises a transverse moving mechanism and a jacking mechanism, the transverse moving mechanism comprises a guide rail and a moving part, the guide rail is erected on the trolley track, and the moving part is arranged on the guide rail and can move along the guide rail; the jacking mechanism is arranged on the moving part and located between the moving part and the trolley body. The device can work in a narrow space, and through the action of the transverse moving mechanism and the jacking mechanism, the trolley to be replaced can stably drive off or drive into the ring cooling machine along the guide rail, and then the trolley to be replaced can be replaced. At the same time, the upper cover and the lower slide plate of the ring cooling machine are avoided from being disassembled, the ring cooling machine trolley body can be quickly replaced, and then the trolley replacement efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of iron and steel smelting, and in particular to a device and method for replacing the body of an annular cooler trolley. Background Technology

[0002] In steel production, the annular cooler is mainly used to cool sinter produced by the sintering machine. The annular cooler is arranged in a circular pattern, divided circumferentially into cooling and non-cooling zones. The trolley, as a crucial component of the annular cooler, carries the hot sinter. Traditional annular coolers, depending on their scale, typically have several trolleys of varying sizes but identical shapes. Each trolley consists of a trolley body and wheels, with the wheels mounted on the trolley body. Several trolleys are hinged to the rotating frame of the annular cooler and arranged sequentially along the circumference of the cooler to form an approximately circular structure. These trolleys can rotate around the center of rotation of the annular cooler along trolley tracks. The rotating frame is composed of radial support beams for the trolleys and inner and outer frames connected to both ends of these beams. It should be noted that the side of the trolley with the hinged seat is the front end, and the side with the wheels is the rear end. The front end of the trolley is hinged to the front trolley support beam via a hinged joint. The rear end is supported by inner and outer wheels on the inner and outer tracks of the trolley, respectively. The trolley tracks are fixed to a pad beam, which is fixed to the plane beam of the annular cooler. During operation, the ore to be cooled is injected into each trolley from the loading station in the non-cooling zone. After the trolley enters the cooling zone, the ore is cooled by pressurized air. After the trolley enters the unloading station in the non-cooling zone, cooling and unloading are completed.

[0003] Typically, when replacing a ring cooler trolley, the trolley to be replaced needs to be moved to the unloading area, the dust cover and dust collection pipe of the trolley removed, and then the trolley is tilted and its direction adjusted using hoisting equipment before being lifted out from above the track. The installation process is the reverse of the above steps. Alternatively, a method for disassembling and assembling a ring cooler trolley body, as disclosed in patent application number 201110396184.4, can be used: the trolley to be replaced is placed above the detachable section of the trolley track and the pad beam, and the pressing relationship between the rear support beam of the trolley body and the plane beam of the ring cooler frame is released. After the trolley body to be replaced is lifted upwards into a suspended position, the detachable section of the horizontal track, the pad beam, and the front ball joint of the trolley can be removed in sequence. Finally, the trolley body to be replaced is lowered to complete the disassembly process. Replacing the trolley using the above method requires disassembling the upper cover and lower slide of the ring cooler, resulting in a large workload.

[0004] Furthermore, the trolley body is supported by three points: the articulated seat, the inner wheel, and the outer wheel. When the articulation is disengaged, the center of gravity of the trolley body tends to shift towards the rear end, making it difficult to locate the center of gravity or balance point during hoisting, resulting in long waiting times and low equipment production efficiency. In addition, the upper cover and lower chute of the annular cooler need to be disassembled, further affecting the efficiency of trolley replacement. The trolley body also has obstructions such as frames of the same height and friction plates, resulting in a confined space for trolley replacement. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a device for replacing the body of an annular cooling machine trolley.

[0006] This invention proposes a device for replacing the body of an annular cooler trolley. The device is located between the trolley body and the trolley track. The device includes a lateral movement mechanism and a lifting mechanism. The lateral movement mechanism includes a guide rail and a moving part. The guide rail is mounted on the trolley track, and the moving part is disposed on the guide rail and can move along the guide rail. The lifting mechanism is disposed on the moving part and is located between the moving part and the trolley body.

[0007] Preferably, the device further includes a guiding mechanism, which includes a guide sleeve and a guide shaft inserted into the guide sleeve. The guide shaft is disposed on the bottom surface of the trolley body and located on the side away from the trolley wheels. The guide sleeve is fixed to the moving part. The guide shaft slides up and down along the guide sleeve under the cover of the guide sleeve.

[0008] Preferably, the lifting mechanism includes a plurality of synchronous jacks, which are evenly arranged on the moving part and located between the moving part and the trolley body.

[0009] Preferably, the bottom of the movable part is provided with a plurality of rollers, and the rollers are adapted to the guide rail.

[0010] Preferably, the device further includes a drive mechanism, which includes a winch and a wire rope. The two ends of the wire rope are respectively connected to the moving part and the winch. The winch is used to drive the wire rope to move the moving part along the guide rail.

[0011] Preferably, a method for disassembling the trolley body of an annular cooler, using the device for replacing the trolley body described above, specifically includes the following steps:

[0012] Step S1: The guide rail is placed on the trolley track, and the lifting mechanism is in contact with the bottom surface of the trolley body;

[0013] Step S2: Disassemble the trolley body to be replaced, which is hinged to the rotating frame of the annular cooler;

[0014] Step S3: Lift the trolley body using the lifting mechanism, so that the lowest point of the outer edge of the wheel on the trolley body to be replaced is raised above the upper surface of the trolley track.

[0015] Step S4: Pull the moving part along the guide rail to remove the trolley body to be replaced from the annular cooler.

[0016] Preferably, the device further includes a guiding mechanism, which includes a guide sleeve and a guide shaft inserted into the guide sleeve. The guide shaft slides up and down along the guide sleeve under the sleeve. Before step S2, the guide shaft is placed on the bottom surface of the trolley body and located away from the trolley wheels. The guide sleeve that cooperates with the guide shaft is fixed on the moving part.

[0017] As described above, the device and method for replacing the body of an annular cooler trolley according to the present invention have the following beneficial effects:

[0018] (1) When disassembling the trolley, in a confined space, a lifting mechanism is used to raise the trolley to be replaced, ensuring that the outer edge of the trolley wheels is higher than the upper surface of the trolley track, thus avoiding interference between the trolley wheels and the trolley track. The coordination between the guiding mechanism and the lifting mechanism ensures the trolley remains balanced during lifting and movement, preventing imbalance due to a shift in the center of gravity. A lateral movement mechanism moves the trolley along the guide rail out of the annular cooler, thus completing the disassembly of the trolley. This also avoids disassembling the annular cooler casing and lower chute, improving disassembly efficiency.

[0019] (2) When reloading the trolley, the trolley is also lifted in a confined space by a lifting mechanism to avoid interference between the trolley wheels and the trolley track. The guide mechanism and the lifting mechanism work together to maintain balance during the trolley's movement and descent. The trolley is then moved to the track by a lateral movement mechanism and pulleys, and fixed to the rotating frame of the annular cooler to complete the installation of the trolley, thereby improving the equipment's production efficiency.

[0020] In summary, this invention enables operation in confined spaces. Through the action of the lateral movement mechanism and the lifting mechanism, the trolley to be replaced is smoothly driven away from or into the annular cooler along the guide rail, thereby realizing the replacement of the trolley. At the same time, it avoids the disassembly of the upper cover and lower slide of the annular cooler, realizing the rapid replacement of the annular cooler trolley body, thus improving the trolley replacement efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main view of a device for replacing the body of an annular cooler trolley according to the present invention.

[0022] Figure 2 This is a schematic side view of a device for replacing the body of an annular cooler trolley according to the present invention.

[0023] Figure 3 This is a schematic top view of a device for replacing the body of an annular cooler trolley according to the present invention.

[0024] Figure 4 This is a schematic diagram of the device for disassembling the trolley for replacing the body of the annular cooler trolley according to the present invention.

[0025] Figure 5 This is a schematic diagram of a device for replacing the body of an annular cooler trolley according to the present invention.

[0026] Figure 6 This is a schematic diagram illustrating the device for replacing the trolley body of an annular cooler according to the present invention, showing the trolley being reassembled.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100. Trolley; 110. Trolley body; 120. Wheel; 130. Trolley track; 140. Hinge seat; 200. Lateral movement mechanism; 210. Guide rail; 220. Moving part; 230. Roller; 300. Lifting mechanism; 310. Synchronous jack; 400. Drive mechanism; 410. Winch; 420. Wire rope; 430. Pulley; 500. Guide mechanism; 510. Guide shaft; 520. Guide sleeve. Detailed Implementation

[0029] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0030] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0031] like Figure 1As shown, the present invention provides a device for replacing the body of a ring cooler trolley. The trolley 100 includes a trolley body 110 and wheels 120. The wheels 120 are disposed on the trolley body 110. The trolley body 110 is hinged to the rotating frame of the ring cooler and can move along the trolley track 130. The device is located between the trolley body 110 and the trolley track 130. The device includes a lateral movement mechanism 200 and a lifting mechanism 300. The lateral movement mechanism 200 includes a guide rail 210 and a moving part 220. The guide rail 210 is mounted on the trolley track 130, and the moving part 220 is disposed on the guide rail 210. The moving part 220 can move along the guide rail 210 and is located at the bottom of the trolley body 110. The lifting mechanism 300 is disposed on the moving part 220 and is located between the moving part 220 and the trolley body 110.

[0032] Specifically, when installing the guide rail 210 on the trolley track 130, the guide rail 210 is installed along the inner track to the outer track of the trolley track 130 and fixed to the upper surface of the inner and outer tracks of the trolley track 130. This ensures that the trolley body 110 moves away from or into the annular cooler along the guide rail 210, thereby enabling the replacement of the trolley and preventing the guide rail 210 from shifting during use. Furthermore, the guide rail 210 is made of 16# channel steel, with a length of 6m and a width of 1m, and is located between the moving part 220 and the trolley track 130. The moving part 220, which matches the guide rail, is welded from 10# channel steel. The moving part 220 has an overall frame structure, and welded stiffeners are added to the moving part 220 to enhance its overall load-bearing strength. The lifting mechanism 300 contacts the bottom of the trolley body 110. During use, the lifting mechanism 300 raises the trolley body 110 away from the trolley track 130 until the lowest point of the outer edge of the wheel 120 is higher than the upper surface of the trolley track 130, preventing interference between the wheel 120 and the trolley track 130 when the trolley body 110 moves. Under the action of traction, the moving part 220 drives the trolley body 110, which has been raised to a predetermined height, to move along the guide rail 210, thereby realizing the replacement of the trolley 100.

[0033] like Figure 2 As shown, the device also includes a guide mechanism 500, which includes a guide sleeve 520 and a guide shaft 510 inserted into the guide sleeve 520. The guide shaft 510 is disposed on the bottom surface of the trolley body 110 and located on the side away from the wheel 120. The guide sleeve 520 is fixed on the moving part 220, and the guide shaft 510 slides up and down along the guide sleeve 520 under the cover of the guide sleeve 520.

[0034] It should be noted that the side of the trolley 100 with the hinge seat 140 is the front end, and the side with the wheel 120 is the rear end. This makes the weight of the rear end of the trolley 100 greater than that of the front end, causing the center of gravity to be biased towards the rear end. After the hinge is released, during the lifting process by the lifting mechanism 300, the uneven weight distribution between the front and rear ends of the trolley 100 can easily cause the center of gravity to shift towards the wheel 120 side, leading to imbalance. Therefore, during assembly, the guide shaft 510 is welded to the bottom surface of the trolley body 110 located away from the wheel 120, and the guide sleeve 520 is welded to the moving part 220 corresponding to the guide shaft 510. The guide shaft 510 and the guide sleeve 520 cooperate with each other, allowing the guide shaft 510 to slide up and down along the guide sleeve 520. The trolley 100 is stably supported by the guide mechanism 500 and the lifting mechanism 300. When the trolley 100 is raised or lowered, the guide shaft 510 can be raised and lowered smoothly with the lifting mechanism 300, which can effectively prevent the center of gravity from shifting.

[0035] like Figures 2-3 As shown, the lifting mechanism 300 includes several synchronous jacks 310, which are evenly arranged on the moving part 220 and located between the moving part 220 and the trolley body 110.

[0036] Furthermore, the synchronous jack 310 includes a jack, a single-operation synchronous valve, matching oil pipes, and a pressure gauge. The jack is connected to the synchronous valve, pressure gauge, and matching oil pipes. Several synchronous jacks 310 are connected to an electric hydraulic pump, among which four 15t single-acting jacks are selected. During assembly, the four synchronous jacks 310 are evenly distributed at the four corners of the moving part 220 and in contact with the trolley body 110. When the trolley 100 is lifted, it can be ensured that the four synchronous jacks 310 are lifted synchronously to the same height.

[0037] like Figures 1-2 As shown, the bottom of the movable part 220 is provided with several rollers 230, which are adapted to the guide rail 210.

[0038] like Figures 3-6 As shown, the device also includes a drive mechanism 400, which includes a winch 410 and a wire rope 420. The two ends of the wire rope 420 are respectively connected to the moving part 220 and the winch 410. The winch 410 is used to drive the wire rope 420 to move the moving part 220 along the guide rail 210.

[0039] The trolley body 110 is trapezoidal, with a narrow side near the inner rail and a wide side near the outer rail. The winch 410 is located outside the outer rail. During disassembly of the trolley 100, the wire rope 420 is fixed to the moving part 220 on the same side as the wide side of the trolley body 110. When removing the trolley 100, the moving part 220 is driven along the guide rail 210 to move the trolley 100 out of the annular cooler via a manual switch. During reassembly of the trolley 100, a pulley 430 is installed on the guide rail 210 near the inner rail. The wire rope 420 is fixed to the moving part 220 on the same side as the narrow side of the trolley body 110 and passes around the pulley 430 to change the direction of force on the moving part 220. When reloading the trolley 100, the moving part 220 is driven by a manual switch to move the trolley 100 into the annular cooler along the guide rail 210.

[0040] like Figures 1-4 As shown, a method for replacing the body of an annular cooler trolley, using a device for replacing the body of an annular cooler trolley as described in any of the above embodiments, specifically includes the following steps:

[0041] Step S1: Place the guide rail 210 on the trolley track 130, and make the lifting mechanism 300 contact the bottom surface of the trolley body 110.

[0042] Step S2: Disassemble the trolley body 110 to be replaced, which is hinged to the rotating frame of the annular cooler;

[0043] Step S3: Lift the trolley body 110 using the lifting mechanism 300, so that the lowest point of the outer edge of the wheel 120 on the trolley body 110 to be replaced is raised above the upper surface of the trolley track 130.

[0044] Step S4: Move the moving part 220 along the guide rail 210 to remove the trolley body 110 to be replaced from the annular cooler.

[0045] When disassembling the trolley 100 using the above method, specifically in step S1, the sideboards on the trolley body 110 can easily obstruct the replacement of the trolley 100. Therefore, before disassembling the trolley 100, the sideboards on the trolley body 110 need to be removed. The guide rail 210 is mounted on the upper surface of the trolley track 130, with the guide rail 210 fixed to the upper surface of the trolley track 130 to prevent guide rail misalignment during the transfer of the trolley 100. The lifting mechanism 300 is slightly abutted against the bottom surface of the trolley body 110, allowing the lifting mechanism to support the trolley body 110, preparing for the next step of disassembling the trolley body 110. A hinge seat 140 is fixed to the side of the trolley body 110 away from the wheels 120, and the hinge seat 140 is hinged to the reassembly frame of the annular cooler via a pin. In step S2, the pin that mates with the hinge seat 140 is removed. At this time, the lifting mechanism 300, which is in contact with the bottom surface of the trolley body 110, stably supports the trolley body 110, ensuring that the trolley body 110 is smoothly removed from the annular cooler. The removed trolley body 110, the lifting mechanism 300, and the lateral movement mechanism 200 form a whole. In step S3, the height of the trolley body 110 is adjusted by the lifting mechanism 300, and the trolley body 110 is simultaneously raised to the predetermined height, so that the lowest point of the outer edge of the wheel 120 on the trolley body 110 to be replaced is raised above the upper surface of the trolley track 130, avoiding interference between the wheel 120 and the trolley track 130 when the trolley body 110 is moved. It should be noted that when raising the height of the trolley body 110, the end of the trolley body 110 without wheels 120 should be slightly lower than the end with wheels 120 to ensure the stability of the trolley 100 during transport. In step S4, the wire rope 420 connects to the winch 410 and the moving part 220. The winch 410 drives the wire rope 420, which in turn pulls the moving part 220 along the guide rail 210, moving it away from the annular cooler until the center point of the trolley body 110 is located outside the outer rail of the trolley. Finally, the trolley 100 to be replaced is lifted directly using hoisting equipment, and a new trolley is installed.

[0046] When reinstalling the trolley, the newly replaced trolley is smoothly placed on the lifting mechanism 300 using hoisting equipment. A pulley 430 is installed on the side of the guide rail 210 near the inner track of the trolley. One end of the wire rope 420 is connected to the winch 410, and the wire rope 420 passes around the pulley 430 and connects to the moving part 220. Driven by the winch 410, the wire rope 420 moves the moving part 220 along the inner track of the trolley until the wheel 120 is directly above the trolley track 130. Then, the height is adjusted synchronously by the lifting mechanism 300 to lower the trolley until the wheel 120 aligns with the trolley track 130. Finally, the newly replaced trolley 100 is fixed to the rotating frame of the annular cooler by hinge, the removed side panels are installed on the trolley body 110, the moving part 220 is removed, and the guide rail 210 is disassembled.

[0047] like Figure 2 As shown, the device also includes a guide mechanism 500, which includes a guide sleeve 520 and a guide shaft 510 inserted into the guide sleeve 520. The guide shaft 510 slides up and down along the guide sleeve 520 under the cover of the guide sleeve 520. Before step S2, the guide shaft 510 is set on the bottom surface of the trolley body 110 and located on the side away from the wheel 120. The guide sleeve 520 that cooperates with the guide shaft 510 is fixed on the moving part 220.

[0048] During the disassembly of the trolley, when implementing step S1, the lifting mechanism 300 contacts the bottom surface of the trolley body 110, enabling the lifting mechanism 300 to support the trolley body 110. The guide shaft 510 is welded to the bottom surface of the trolley body 110 and located on the side away from the wheel 120. The guide sleeve 520 that cooperates with the guide shaft 510 is welded to the corresponding moving part 220, thereby ensuring that the trolley 100 remains stable during lifting and transfer.

[0049] During the reinstallation of the trolley, it should be noted that the newly replaced trolley 100 is hoisted onto the lifting mechanism 300 using hoisting equipment, making the lifting mechanism 300, trolley 100, and moving part 220 a whole. The moving part 220 has a guide sleeve 520 that matches the previous trolley. Therefore, under the support of the lifting mechanism 330, a guide shaft 510 needs to be welded at the corresponding position of the guide sleeve 520 to ensure that the trolley 100 remains stable during the transfer and descent process.

[0050] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A device for replacing the body of an annular cooler trolley, characterized in that, The device is located between the trolley body (110) and the trolley track (130). The device includes a traversing mechanism (200), a lifting mechanism (300), and a guiding mechanism (500). The traversing mechanism (200) includes a guide rail (210) and a moving part (220). The guide rail (210) is mounted on the trolley track (130), and the moving part (220) is mounted on the guide rail (210) and can move along the guide rail (210). The lifting mechanism (300) is mounted on the moving part (220). The lifting mechanism (300) is located between the moving part (220) and the trolley body (110); wherein, the guiding mechanism (500) includes a guide sleeve (520) and a guide shaft (510) inserted into the guide sleeve (520), the guide shaft (510) is disposed on the bottom surface of the trolley body (110) and located on the side away from the trolley wheel (120); the guide sleeve (520) is fixed on the moving part (220); the guide shaft (510) slides up and down along the guide sleeve (520) under the sleeve (520).

2. The device for replacing the body of an annular cooler trolley according to claim 1, characterized in that, The lifting mechanism (300) includes a plurality of synchronous jacks (310), which are evenly arranged on the moving part (220) and are located between the moving part (220) and the trolley body (110).

3. The device for replacing the body of an annular cooler trolley according to claim 1, characterized in that, The bottom of the movable part (220) is provided with a plurality of rollers (230), which are adapted to the guide rail (210).

4. The device for replacing the body of an annular cooler trolley according to claim 1, characterized in that, The device further includes a drive mechanism (400), which includes a winch (410) and a wire rope (420). The two ends of the wire rope (420) are respectively connected to the moving part (220) and the winch (410). The winch (410) is used to drive the wire rope (420) to move the moving part (220) along the guide rail (210).

5. A method for replacing the body of a ring-cooled machine trolley, characterized in that, The device for replacing the body of an annular cooler trolley as described in claim 1 includes the following steps: Step S1: The guide rail (210) is placed on the trolley track (130), and the lifting mechanism (300) contacts the bottom surface of the trolley body (110); Step S2: Disassemble the trolley body (110) that is hinged to the rotating frame of the annular cooler. Step S3: Lift the trolley body (110) by the lifting mechanism (300) so that the lowest point of the outer edge of the wheel (120) on the trolley body (110) to be replaced is raised above the upper surface of the trolley track (130); Step S4: Pull the moving part (220) along the guide rail (210) to move the trolley body (110) to be replaced out of the annular cooler.

6. The method for replacing the body of a ring cooler trolley according to claim 5, characterized in that, The device further includes a guide mechanism (500), which includes a guide sleeve (520) and a guide shaft (510) inserted into the guide sleeve (520). The guide shaft (510) slides up and down along the guide sleeve (520) under the cover of the guide sleeve (520). Before step S2, the guide shaft (510) is placed on the bottom surface of the trolley body (110) and located on the side away from the trolley wheel (120). The guide sleeve (520) that cooperates with the guide shaft (510) is fixed on the moving part (220).

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