Elastic self-lubricating sealing device for side part of trolley

Abstract

The utility model relates to the technical field of sintering machine trolleys, in particular to an elastic self-lubricating sealing device for the side portion of a trolley. Comprising a trolley, an air bellow and elastic slideways arranged on the two sides of the bottom of the trolley, mounting grooves are formed in the two sides of the bottom of the trolley, elastic floating plate mechanisms are arranged between the mounting grooves and the elastic slideways, the elastic floating plate mechanisms are arranged in the mounting grooves through first bolts, and each elastic floating plate mechanism comprises a wear-resistant shell, a pressing plate, a floating plate and a plate spring; when the trolley bumps, the trolley floats up and down through a floating plate of the elastic floating plate mechanism and a lower wear-resisting plate of the elastic slide way, the attaching effect is better, and after the trolley and the lower wear-resisting plate are attached, the friction force of the two is reduced through a graphite column and lubricating oil, and the sealing performance of the two can be improved; through the pressure spring and the plate spring, the floating plate can be always contacted with the lower wear-resisting plate of the elastic slide way by utilizing elasticity, so that air leakage caused by a gap between the floating plate and the lower wear-resisting plate due to bumping of the trolley is avoided, and air leakage caused by unevenness is effectively compensated.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering machine carriages, in particular to an elastic self-lubricating sealing device for the side part of a carriage. Background Art

[0002] The walking beam (flat firing) / belt sintering machine is a closed electric arc furnace sintering belt composed of many carriages. Therefore, the carriage is an important part of the sintering machine. It directly bears the operations of charging, ignition, air extraction, sintering until discharging at the tail of the machine, and completes the sintering operation. The effective sintering area of the sintering machine is the product of the width of the carriage and the effective length of the sintering machine. The carriage is composed of a frame, a retaining plate, rollers, grate bars and a movable slide plate.

[0003] In sintering production, the air leakage of the sintering machine carriage has always been one of the difficult problems in the sintering process. For example, in the Chinese utility model patent CN218267225U, an adjustable profiling slideway includes an upper substrate, a lower substrate, a bracket, an adjusting mechanism and a flexible sealing component. The slideway can be adjusted according to the distance between the upper substrate and the horizontal part of the adjusting mechanism, so that the height difference between the adjustable slideway and the adjacent track is consistent, and the slideway surface can profile according to the deformation curve of the adjacent track surface. Due to the effective guarantee of the height difference, when a single carriage runs on any track, the lower sealing surface of the carriage seal can be in close contact with the slideway surface, and the sealing effect is greatly improved; adopting the single elastic floating mode of the elastic slideway and the lower sealing surface at the bottom of the carriage for sealing, the sealing effect cannot be effectively guaranteed. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an elastic self-lubricating sealing device for the side part of a carriage, which improves the fitting effect through the mutual cooperation of two elastic sealing mechanisms.

[0005] To achieve the above technical purpose, the utility model proposes the following technical solution: An elastic self-lubricating sealing device for the side part of a carriage, including a carriage, an air box and slideways arranged on both sides of the bottom of the carriage. The slideways include a number of elastically connected slideways in sequence. Installation grooves are provided on both sides of the bottom of the carriage. Elastic floating plate mechanisms are provided between the installation grooves and the elastic slideways. The elastic floating plate mechanisms are arranged in the installation grooves through first bolts. The elastic floating plate mechanisms include wear-resistant shells, pressing plates, floating plates and leaf springs. The wear-resistant shell is a U-shaped structure with an opening downward. The pressing plates, floating plates and leaf springs are all arranged in the wear-resistant shell, and the pressing plates are located above the floating plates. The cross-section of the leaf spring is Ω-shaped. The top surface of the leaf spring is arranged between the pressing plate and the top of the wear-resistant shell, and the leaf spring and the pressing plate are installed on the top of the wear-resistant shell through second bolts. Both sides of the leaf spring are connected to the floating plate through rivets. A number of compression springs are arranged between the floating plate and the pressing plate. Both sides of the floating plate are connected to the wear-resistant shell through adjusting bolts. A number of graphite columns are equidistantly embedded in the bottom of the floating plate.

[0006] Further, the floating plate is slidably installed in the wear-resistant shell. End plates are fixed to both ends of the wear-resistant shell. Slots are provided at both ends of the floating plate, and one side of the end plate contacts the floating plate and can be inserted into the slot.

[0007] Further, one end of the adjusting bolts on both sides of the floating plate respectively passes through the compression springs at both ends of the pressing plate and is connected to the wear-resistant shell.

[0008] Further, limiting slots adapted to the number of compression springs between the floating plate and the adjusting bolts are provided on the floating plate. The lower part of the compression spring is arranged in the limiting slot. A guide sleeve is provided at the bottom of the pressing plate. The upper part of the compression spring is arranged in the guide sleeve, and the inner diameter of the guide sleeve is smaller than the inner diameter of the limiting slot.

[0009] Further, the elastic slideway includes a lower wear-resistant plate, an upper base plate, a bracket, an adjusting mechanism and a flexible sealing assembly. The lower wear-resistant plate is arranged between the upper base plate and the floating plate. The bracket is arranged on the top of the air box. The flexible sealing assembly is arranged on the right side of the upper base plate. The adjusting mechanism is arranged between the upper base plate and the bracket. First splicing protrusions that are mirror-symmetrical to each other are provided at both ends of the lower wear-resistant plate. Second splicing protrusions that are mirror-symmetrical to each other are provided at both ends of the upper base plate. The interfaces of the lower wear-resistant plate and the upper base plate are arranged staggeredly.

[0010] Further, the adjusting mechanism includes a bearing plate, a spring, a spring support and an adjusting rod. The bearing plate is arranged between the upper base plate and the bracket. The spring is arranged on the top of the spring support. A screw rod is fixedly connected to the bottom of the spring support. One end of the first spring away from the spring support is connected to the upper base plate. The bottom of the spring support passes through the bearing plate and is fixed by a nut. One end of the adjusting rod is connected to the upper base plate, and the other end of the adjusting rod passes through the bearing plate and is connected with a nut.

[0011] Compared with the prior art, the beneficial effects produced by the present utility model are as follows: The structure of the present utility model is novel, ingeniously conceived, and simple and convenient to operate. Compared with the prior art, it has the following advantages: When the trolley bumps, the floating plate of the elastic floating plate mechanism and the lower wear-resistant plate of the elastic slideway float up and down, so that the floating plate and the lower wear-resistant plate are better in fitting effect. After the two are fitted, on the one hand, the friction between the two is reduced by the graphite column and lubricating oil, and on the other hand, the sealing performance of the two can be further improved; The compression spring and the leaf spring can use their elasticity to make the floating plate always contact with the lower wear-resistant plate of the elastic slideway, avoiding air leakage caused by the gap between the trolley and the lower wear-resistant plate due to the bump of the trolley, and effectively compensating for the air leakage caused by unevenness; Through the mutual cooperation of structures such as the leaf spring, the wear-resistant shell, the end plate and the slot, the overall sealing performance of the elastic floating plate mechanism can be improved, effectively preventing harmful wind and dust particles from passing through. Description of the Drawings

[0012] Figure 1 is the overall structural schematic diagram of the present utility model;

[0013] Figure 2 It is an enlarged view of the structure at position A of the present utility model;

[0014] Figure 3 It is a schematic structural diagram of the elastic slide plate mechanism of the present utility model;

[0015] Figure 4 It is a schematic side view structural diagram of the elastic slide plate mechanism of the present utility model;

[0016] Figure 5 It is a schematic cross-sectional structural diagram of the elastic slide plate mechanism of the present utility model;

[0017] Figure 6 It is an enlarged view of the structure at position B of the present utility model;

[0018] Figure 7 It is a schematic structural diagram of the elastic slideway of the present utility model;

[0019] Figure 8 It is an enlarged view of the structure at position C of the present utility model;

[0020] Figure 9 It is a schematic internal structural diagram of the elastic slideway of the present utility model;

[0021] Figure 10 It is a schematic structural diagram of the spring support of the present utility model.

[0022] In the figure, 1. trolley; 2. air box; 3. elastic slideway; 4. installation groove; 5. elastic slide plate mechanism; 6. wear-resistant shell; 7. pressing plate; 8. slide plate; 9. leaf spring; 10. first bolt; 11. second bolt; 12. rivet; 13. compression spring; 14. adjusting bolt; 15. graphite column; 16. end plate; 17. clamping groove; 18. limiting groove; 19. guide sleeve; 20. lower wear-resistant plate; 21. upper base plate; 22. bracket; 23. flexible sealing assembly; 24. adjusting mechanism; 25. first splicing protrusion; 26. second splicing protrusion; 27. bearing plate; 28. spring; 29. spring support; 30. screw; 31. adjusting rod. Specific embodiments

[0023] The following are specific embodiments of the present utility model, and the technical solutions of the present utility model are further described in conjunction with the accompanying drawings, but the present utility model is not limited to these embodiments.

[0024] Such as Figures 1-10As shown in the figure, the utility model provides an elastic self-lubricating sealing device for the side of a trolley, which includes a trolley 1, an air box 2, and slideways arranged on both sides of the bottom of the trolley 1. The slideways include a number of elastic slideways 3 connected in sequence. Installation grooves 4 are provided on both sides of the bottom of the trolley 1. Elastic floating plate mechanisms 5 are arranged between the installation grooves 4 and the elastic slideways 3. The elastic floating plate mechanisms 5 are fixed in the installation grooves 4 through a number of first bolts 10. The elastic floating plate mechanisms 5 include wear-resistant shells 6, pressing plates 7, floating plates 8, and leaf springs 9. The wear-resistant shells 6 are of a U-shaped structure with an opening downward. The pressing plates 7, floating plates 8, and leaf springs 9 are all arranged inside the wear-resistant shells 6, and the pressing plates 7 are located above the floating plates 8. The cross-section of the leaf springs 9 is in the shape of Ω. The top surface of the leaf springs 9 is arranged between the pressing plates 7 and the tops of the wear-resistant shells 6, and the leaf springs 9 and the pressing plates 7 are fixed to the tops of the wear-resistant shells 6 through a number of second bolts 11. One end of the first bolt 10 sequentially passes through the pressing plate 7, the leaf spring 9, the top of the wear-resistant shell 6, the installation groove 4 and is connected to the trolley 1. Both sides of the leaf spring 9 are connected to the floating plate 8 through rivets 12. A number of compression springs 13 are arranged between the floating plate 8 and the pressing plate 7. Both sides of the floating plate 8 are connected to the wear-resistant shell 6 through adjusting bolts 14. A number of graphite columns 15 are equidistantly embedded at the bottom of the floating plate 8.

[0025] As Figures 1-6 As shown in the figure, the elastic floating plate mechanism 5 proposed in this embodiment is used in cooperation with the elastic slideway 3 in the prior art. For the specific structure of the elastic slideway 3, refer to an adjustable profiling slideway with the publication number CN218267225U, and the detailed structure will not be elaborated here; the elastic floating plate mechanism 5 is slidably arranged on the top of the elastic slideway 3. The leaf spring 9 with a cross-section in the shape of Ω is not only an elastic element but also a sealing element on both sides of the elastic floating plate mechanism 5. Combined with the wear-resistant shell 6 of the U-shaped structure, it effectively prevents air leakage between the wear-resistant shell 6 and the floating plate 8; the distance between the wear-resistant shell 6 and the floating plate 8 can be adjusted through the adjusting bolt 14 to meet the needs of the on-site height; when the trolley 1 jolts, the high-temperature-resistant compression springs 13 and leaf springs 9 can use their elasticity to make the floating plate 8 always contact with the elastic slideway 3, avoiding air leakage caused by the gap between the trolley 1 and the elastic slideway 3 due to the jolting of the trolley 1, effectively compensating for the air leakage caused by unevenness. At the same time, when the trolley 1 runs, the elastic slideway 3 will also float up and down. The elastic floating plate mechanism 5 and the elastic slideway 3 cooperate with each other, and both are in a floating state with good mutual fitting effect. After fitting, graphite lubrication and lubricating oil lubrication are used to improve the lubrication effect and reduce the friction between the floating plate 8 and the lower wear-resistant plate 19 of the elastic slideway 3, further enhancing the sealing effect.

[0026] The floating plate 8 is slidably installed inside the wear-resistant shell 6. End plates 16 are fixed at both ends of the wear-resistant shell 6. Slots 17 are opened at both ends of the floating plate 8. One side of the end plate 16 contacts the floating plate 8 and can be inserted into the slot 17.

[0027] As Figure 5As shown, during installation, by inserting the end plate 16 into the slot 17, air leakage at the end of the swimming plate 8 can be prevented.

[0028] One end of the adjusting bolts 14 on both sides of the swimming plate 8 passes through the compression springs 13 at both ends of the pressure plate 7 and is connected to the wear-resistant shell 6.

[0029] like Figure 5 As shown, the adjusting bolt 14 passes through the compression spring 13, which can prevent the compression springs 13 at both ends of the pressure plate 7 from being skewed.

[0030] The swimming plate 8 is provided with limiting grooves 18 whose number matches that of the compression springs 13 between the adjusting bolts 14. The lower part of the compression spring 13 is arranged in the limiting groove 18. A guide sleeve 19 is arranged at the bottom of the pressure plate 7. The upper part of the compression spring 13 is arranged in the guide sleeve 19. The inner diameter of the guide sleeve 19 is smaller than the inner diameter of the limiting groove 18.

[0031] like Figure 6 As shown, by limiting the horizontal position of the compression spring 13 through the limit groove 18 and the guide sleeve 19, the compression spring 13 between the adjustment bolts 14 can be avoided from being skewed. At the same time, the guide sleeve 19 presses down the compression spring 13, the compression spring 13 contracts, and the lower part of the guide sleeve enters the limit groove 18, which does not affect the use effect of the compression spring 13.

[0032] The elastic slide 3 includes a lower wear-resistant plate 20, an upper base plate 21, a bracket 22, an adjustment mechanism 24 and a flexible sealing assembly 23. The lower wear-resistant plate 20 is arranged between the upper base plate 21 and the swimming plate 8, the bracket 22 is arranged on the top of the bellows 2, the flexible sealing assembly 23 is arranged on the right side of the upper base plate 21, and the adjustment mechanism 24 is arranged between the upper base plate 21 and the bracket 22. A plurality of graphite columns and oil grooves are equidistantly arranged on the top of the lower wear-resistant plate 20, and an oil inlet pipe is connected to the bottom of the oil groove, and lubricating oil is injected into the oil groove through the oil inlet pipe. Both ends of the lower wear-resistant plate 20 are provided with a first splicing protrusion 25, and the first splicing protrusions 25 at both ends of the lower wear-resistant plate 20 are mirror-symmetrical to each other, and both ends of the upper base plate 21 are provided with a second splicing protrusion 26, and the second splicing protrusions 26 at both ends of the upper base plate 21 are mirror-symmetrical to each other, and the splicing part of the lower wear-resistant plate 20 is staggered with the splicing part of the upper base plate 21.

[0033] like Figure 7 and 8As shown, the flexible sealing assembly 23 is used to prevent dust from falling in. The connection methods and functions of the various parts of the lower wear-resistant plate 20, the upper substrate 21, the bracket 22, and the flexible sealing assembly 23 are the same as those of an adjustable profiling slideway structure with the publication number CN218267225U, so they will not be elaborated in detail in this embodiment; in this embodiment, since the length required for the slideway of the trolley 1 is relatively long, it is generally composed of several short elastic slideways 3 spliced together. In this embodiment, in order to improve the horizontality between adjacent two elastic slideways 3 and prevent air leakage at the connection of adjacent two elastic slideways 3, first splicing bumps 25 are fixed at both ends of the lower wear-resistant plate 20, and second splicing protrusions 26 are fixedly connected to both ends of the upper substrate 21. The first splicing protrusion 25 at one end of the lower wear-resistant plate 20 is spliced with the first splicing protrusion 25 at one end of the adjacent other lower wear-resistant plate 20, and at the same time, the second splicing protrusion 26 at one end of the upper substrate 21 is spliced with the second splicing protrusion 26 of the adjacent other upper substrate 21. After splicing, countersunk bolts are used to fix the lower wear-resistant plate 20 and the upper substrate 21 together. The splicing position of the lower wear-resistant plate 20 is staggered from the splicing position of the upper substrate 21, so that the splicing positions of the two restrict and lock each other, and there will be no convex unevenness in a single piece, effectively ensuring the horizontality of the lower wear-resistant plate 31 and the upper substrate 20.

[0034] The adjusting mechanism 24 includes a bearing plate 27, a spring 28, a spring support 29, and an adjusting rod 31. The bearing plate 27 is arranged between the upper substrate 21 and the bracket 22. The spring 28 is arranged on the top of the spring support 29. A screw rod 30 is fixedly connected to the bottom of the spring support 29. One end of the spring 28 away from the spring support 29 is connected to the upper substrate 21. The screw rod at the bottom of the spring support 29 is threadedly connected to the bearing plate 27. One end of the adjusting rod 30 is connected to the upper substrate 21. A through hole is formed in the bearing plate 27. The inner diameter of the through hole is larger than the outer diameter of the adjusting rod 30, so that the adjusting rod 30 can slide up and down in the through hole. The other end of the adjusting rod 30 passes through the through hole and is connected with a nut.

[0035] As Figure 8 and 9 shown, in this embodiment, by turning the nut at the bottom of the adjusting rod 31, the distance between the upper substrate 21 and the bearing plate 27 is adjusted to play a role in positioning and adjusting the height of the equipment; the sintering temperature at the sintering machine trolley site can reach 400 - 600 °C. Affected by the material of the spring 28, the spring 28 at high temperature may fail and shrink, resulting in the spring 28 not being able to rebound to its original height. Therefore, the height of the first spring 28 can be increased by turning the screw rod 30 at the bottom of the spring support 29, so that the elastic element remains at the same level.

[0036] Principle of use: During the operation of the trolley 1, due to the influence of gravity, the floating plate 8 contacts the lower wear-resistant plate 20. Under the action of gravity and the movement of the trolley 1, the graphite column 15 is ground into powder. As the trolley 1 moves, the graphite powder and lubricating oil are spread onto the surfaces of various corners of the floating plate 8 and the lower wear-resistant plate 20. Under the dual lubrication of the graphite powder and the lubricating oil, the friction between the floating plate 8 and the lower wear-resistant plate 20 is reduced, the service lives of the floating plate 8 and the lower wear-resistant plate 20 are increased, and the sealing effect is improved at the same time. When the trolley 1 jolts, the floating plate 8 in the elastic floating plate mechanism 5 floats up and down under the elastic action of the compression spring 13 and the leaf spring 9. At the same time, the lower wear-resistant plate 20 in the elastic slideway 3 floats up and down under the action of the spring 28 in the adjusting mechanism 24. According to the elastic mutual compensation effect, the floating plate 8 and the wear-resistant plate 20 that float up and down are always in close contact with each other, and the fitting effect is better than that of a single elastic floating structure. At the same time, the leaf spring 9 is not only an elastic element but also a sealing element on both sides of the elastic floating plate mechanism 5. The leaf spring 9 cooperates with the wear-resistant shell 6 and the end plate 8 to improve the overall sealing performance of the elastic floating plate mechanism 5 and effectively prevent harmful wind and dust particles from passing through.

[0037] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A trolley side elastic self-lubricating sealing device, comprising a trolley (1), a bellows (2) and slideways arranged on both sides of the bottom of the trolley (1), characterized in that: The slideway comprises a plurality of elastic slideways (3) connected in sequence. Both sides of the bottom of the trolley (1) are provided with mounting grooves (4). An elastic sliding plate mechanism (5) is provided between the mounting grooves (4) and the elastic slideway (3). The elastic sliding plate mechanism (5) is arranged in the mounting grooves (4) by means of a first bolt (10). The elastic sliding plate mechanism (5) comprises a wear-resistant shell (6), a pressure plate (7), a sliding plate (8) and a leaf spring (9). The wear-resistant shell (6) is a U-shaped structure with an opening downward. The pressure plate (7), the sliding plate (8) and the leaf spring (9) are all arranged in the wear-resistant shell (6). The pressure plate (7) is located at Above the swimming plate (8), the cross-section of the leaf spring (9) is Ω-shaped, the top surface of the leaf spring (9) is arranged between the pressure plate (7) and the top of the wear-resistant shell (6), and the leaf spring (9) and the pressure plate (7) are installed on the top of the wear-resistant shell (6) through a second bolt (11), both sides of the leaf spring (9) are connected to the swimming plate (8) through rivets (12), a plurality of compression springs (13) are arranged between the swimming plate (8) and the pressure plate (7), both sides of the swimming plate (8) are connected to the wear-resistant shell (6) through adjusting bolts (14), and a plurality of graphite columns (15) are equidistantly embedded in the bottom of the swimming plate (8).

2. The trolley side elastic self-lubricating sealing device according to claim 1, characterized in that: The swimming plate (8) is slidably mounted in the wear-resistant shell (6), and end plates (16) are fixed at both ends of the wear-resistant shell (6). Both ends of the swimming plate (8) are provided with a clamping groove (17), and one side of the end plate (16) contacts the swimming plate (8) and can be inserted into the clamping groove (17).

3. The trolley side elastic self-lubricating sealing device according to claim 1, characterized in that: One end of the adjusting bolts (14) on both sides of the swimming plate (8) passes through the compression springs (13) at both ends of the pressure plate (7) and is connected to the wear-resistant shell (6).

4. The trolley side elastic self-lubricating sealing device according to claim 3, characterized in that: The movable plate (8) is provided with limiting grooves (18) whose number matches the number of the compression springs (13) between the adjusting bolts (14); the lower part of the compression spring (13) is arranged in the limiting groove (18); the bottom of the pressure plate (7) is provided with a guide sleeve (19); the upper part of the compression spring (13) is arranged in the guide sleeve (19); the inner diameter of the guide sleeve (19) is smaller than the inner diameter of the limiting groove (18).

5. The trolley side elastic self-lubricating sealing device according to claim 1, characterized in that: The elastic slideway (3) comprises a lower wear-resistant plate (20), an upper base plate (21), a bracket (22), a flexible sealing assembly (23) and a plurality of adjustment mechanisms (24); the lower wear-resistant plate (20) is arranged between the upper base plate (21) and the swimming plate (8); the bracket (22) is arranged on the top of the bellows (2); the flexible sealing assembly (23) is arranged on the right side of the upper base plate (21); the adjustment mechanism (24) is arranged between the upper base plate (21) and the bracket (22); both ends of the lower wear-resistant plate (20) are provided with first splicing protrusions (25); the first splicing protrusions (25) at both ends of the lower wear-resistant plate (20) are mirror-symmetrical to each other; both ends of the upper base plate (21) are provided with second splicing protrusions (26); the second splicing protrusions (26) at both ends of the upper base plate (21) are mirror-symmetrical to each other; the splicing portion of the lower wear-resistant plate (20) is staggered with the splicing portion of the upper base plate (21).

6. The trolley side elastic self-lubricating sealing device according to claim 5, characterized in that: The adjusting mechanism (24) comprises a bearing plate (27), a spring (28), a spring support (29) and an adjusting rod (31); the bearing plate (27) is arranged between the upper base plate (21) and the bracket (22); the spring (28) is arranged on the top of the spring support (29); a screw rod (30) is fixedly connected to the bottom of the spring support (29); one end of the spring (28) away from the spring support (29) is connected to the upper base plate (21); the screw rod (30) at the bottom of the spring support (29) is connected to the bearing plate (27) by a thread; one end of the adjusting rod (31) is connected to the upper base plate (21); and the other end of the adjusting rod (31) passes through the bearing plate (27) and is connected to a nut.

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