Grate plate resetting mechanism in chain grate machine

Abstract

The utility model discloses a grate plate resetting mechanism in a chain grate machine, which comprises two rotating arms rotatably arranged on a tail cross beam of the chain grate machine, connecting arms slidably clamped on the rotating arms, a pull rope arranged on the connecting arms, upward connected with a material sliding plate, a rotating shaft arranged between the two connecting arms, a pressing roller rotatably arranged on the rotating shaft, and a material sliding plate arranged on the pressing roller. The two ends of the compression roller are respectively welded with a bearing seat, ball bearings are sleeved in the bearing seats, transparent covers are arranged on the bearing seats, framework oil seals are arranged in the transparent covers, journals of the rotating shafts penetrate through the ball bearings on the corresponding sides and the transparent covers and then are connected with the connecting arms on the same sides, and the journals of the rotating shafts are in sealing fit with the framework oil seals in the transparent covers on the same sides. According to the grate plate resetting device, the tilted grate plate can be reset, and the grate plate in a normal state cannot be interfered.

Description

Technical Field

[0001] The utility model relates to a chain grate, in particular to a grate plate resetting mechanism in the chain grate. Background Art

[0002] A chain grate is a device that uses waste heat from an annular cooler and the hot air from a rotary kiln to dry, preheat, and oxidize the green pellets before feeding them into a rotary kiln for calcination. The grate plates in the chain grate are combined to form an annular grate bed that supports the pellets and operates along with them. The grate plates operate between room temperature and 1000°C. The grate plates expand at high temperatures and contract at low temperatures, causing them to warp during this reciprocating operation. This warping can lead to an uneven grate bed, uneven material distribution, and material leakage, necessitating the timely reset of any warped grate plates. Utility Model Content

[0003] The utility model aims to provide a grate plate resetting mechanism in a chain grate which can timely reset a tilted grate plate without stopping the chain grate during its operation.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: the grate plate resetting mechanism in the chain grate machine includes: two rotating arms rotatably arranged on the tail beam of the chain grate machine, a connecting arm is slidably clamped on the rotating arm, a pull rope is provided on the connecting arm, the pull rope is upwardly connected to the material sliding plate, a rotating shaft is provided between the two connecting arms, a pressure roller is rotatably provided on the rotating shaft, a bearing seat is welded at both ends of the pressure roller, a ball bearing is mounted in the bearing seat, a transparent cover is provided on the bearing seat, the transparent cover is abutted against the ball bearing, a skeleton oil seal is provided in the transparent cover, the shaft neck of the rotating shaft passes through the ball bearing and the transparent cover on the corresponding side and is connected to the connecting arm on the same side, and the shaft neck of the rotating shaft is sealed and fitted with the skeleton oil seal in the transparent cover on the same side.

[0005] Furthermore, the grate plate resetting mechanism in the aforementioned chain grate machine is provided with two upper and lower parallel long guide holes on the rotating arm, and two through holes are provided on the upper and lower connecting arm. The two through holes are aligned one by one with the two long guide holes, and an adjusting bolt is passed through between the relatively aligned through holes and the long guide holes, and an adjusting nut is threadedly connected to the adjusting bolt.

[0006] Furthermore, the grate plate reset mechanism in the aforementioned chain grate machine, wherein a perforated support plate is provided on the rotating arm, a transmission nut is welded on the perforated support plate, a perforated connecting plate is provided on the connecting arm, a composite shaft is provided between the perforated support plate and the perforated connecting plate, a threaded section of the composite shaft is threadedly connected to the transmission nut, and a first retaining ring is clamped after the optical section of the composite shaft passes through the perforated connecting plate, and the first retaining ring is blocked on the perforated connecting plate.

[0007] Furthermore, the grate plate resetting mechanism in the aforementioned chain grate machine, wherein the connection structure between the rotating arm and the tail crossbeam is: a swivel seat is provided on the tail crossbeam, a pin shaft is provided in the swivel seat, the rotating arm is rotatably sleeved on the pin shaft, and a limit plate is provided on both side walls of the rotating arm, and the two limit plates are respectively against the inner walls on both sides of the swivel seat.

[0008] Furthermore, the grate plate resetting mechanism in the aforementioned chain grate machine has positioning grooves at both ends of the pin shaft, and limiting plates are provided on both side walls of the swivel seat, and the two limiting plates are respectively clamped in the two positioning grooves of the pin shaft.

[0009] Furthermore, in the aforementioned grate plate resetting mechanism of the chain grate machine, a second retaining ring is provided after the shaft necks at both ends of the rotating shaft extend outward from the connecting arms on the corresponding sides, and the second retaining ring is retained on the outer side wall of the connecting arm on the corresponding side.

[0010] Furthermore, in the aforementioned grate plate resetting mechanism of the chain grate, a first reinforcing plate is connected between the two rotating seats, and a second reinforcing plate is connected between the two rotating arms.

[0011] Furthermore, in the aforementioned grate plate resetting mechanism of the chain grate machine, a lifting lug is provided on the top wall of the connecting arm, and a pull rope is tied to the lifting lug.

[0012] The advantages of the present invention are that the grate plate reset mechanism described in the present invention is placed on the tail crossbeam of the chain grate machine, and the tail crossbeam is used as a support point, which does not take up extra space and is convenient to install. The position of the pressure roller is adjusted by the composite shaft and the pull rope, so that the pressure roller rests on the grate plate without exerting pressure on the grate plate in a normal state. During the operation of the chain grate machine, the pressure roller can reset the raised grate plate without interfering with the grate plate in a normal state. The pressure roller is arranged on the rotating shaft and connected through the bearing seat, the ball bearing, the transparent cover and the skeleton oil seal, which not only increases the weight of the pressure roller to achieve a better reset effect, but also prevents dust from entering the bearing seat and affecting the ball bearing. The pressure roller can rotate flexibly under the action of the ball bearing. When the chain grate machine is running, the grate plate and the pressure roller contact each other, causing the pressure roller to rotate on its own. There is rolling friction between the pressure roller and the grate plate, which prevents the pressure roller from causing scratches on the grate plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the grate plate resetting mechanism in the chain grate machine described in the present invention in the main viewing direction.

[0014] Figure 2 yes Figure 1 Schematic diagram of the structure from the top view.

[0015] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure in the AA direction.

[0016] Figure 4 The utility model is a schematic diagram of the position structure of the grate plate resetting mechanism in the chain grate when it is installed on the chain grate in the main viewing direction.

[0017] Figure 5 The utility model is a schematic diagram of the position structure of the grate plate resetting mechanism in the chain grate when it is installed on the chain grate in a top view. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0019] like Figures 1 to 5 As shown, the grate plate reset mechanism in the chain grate described in the present invention has two swivel seats 1 on the tail crossbeam of the chain grate, a first reinforcing plate 11 is provided between the two swivel seats 1, a pin shaft 12 is provided in the swivel seat 1, and positioning grooves 121 are provided at both ends of the pin shaft 12. Limiting plates 13 are provided on both side walls of the swivel seat 1. The two limiting plates 13 are respectively clamped in the two positioning grooves 121 of the pin shaft 12 to limit the pin shaft 12. A rotating arm 2 is rotatably provided on the pin shaft 12, and a rotating arm 2 is provided on both side walls of the rotating arm 2. The two limiting plates 21 are respectively against the inner walls on both sides of the swivel seat 1. The limiting of the two limiting plates 21 can prevent the swivel arm 2 from lateral displacement during the rotation process. A second reinforcing plate 22 is provided between the two swivel arms 2. A connecting arm 3 is slidingly provided on the swivel arm 2. Two upper and lower parallel long guide holes 23 are provided on the swivel arm 2. Two through holes are provided on the connecting arm 3. The two through holes are aligned one by one with the two long guide holes 23. An adjusting bolt 31 is passed through between the relatively aligned through holes and the long guide holes 23. The joint bolt 31 is threadedly connected with an adjusting nut 311. By loosening the adjusting nut 311, the connecting arm 3 can be displaced along the long guide hole 23 with the adjusting bolt 31. By tightening the adjusting nut 311, the connecting arm 3 can be locked and fixed on the rotating arm 2. The two adjusting bolts 31 are provided to improve the connection strength between the connecting arm 3 and the rotating arm 2. A perforated support plate 24 is provided on the rotating arm 2, and a transmission nut 241 is welded on the perforated support plate 24. A perforated connecting plate 32 is provided on the connecting arm 3. A composite shaft 4 is arranged between the plates 32, and the threaded section of the composite shaft 4 is threadedly connected to the transmission nut 241. After the optical section of the composite shaft 4 passes through the perforated connecting plate 32, a first retaining ring is clamped thereon. The first retaining ring is blocked on the perforated connecting plate 32. By screwing the composite shaft 4, the threaded transmission between the composite shaft 4 and the transmission nut 241 can drive the connecting arm 3 to move along the long guide hole 23 on the rotating arm 2. A lifting ear 33 is provided on the top wall of the connecting arm 3, and a pull rope 34 is tied to the lifting ear 33. The pull rope 34 is connected upward to the material sliding plate on the chain grate.

[0020] A rotating shaft 5 is provided between the two connecting arms 3. The journals at both ends of the rotating shaft 5 extend outward from the connecting arms 3 on the corresponding side. A second retaining ring is clamped on the journal. The second retaining ring is blocked on the outer wall of the connecting arm 3 on the corresponding side so that the rotating shaft 5 is fixed between the two connecting arms 3. A pressure roller 6 is rotatably provided on the rotating shaft 5. A bearing seat 61 is welded at both ends of the pressure roller 6. A ball bearing 62 is installed in the bearing seat 61. A transparent cover 63 is provided on the bearing seat 61. The transparent cover 63 rests on the ball bearing 62. A skeleton oil seal 64 is provided in the transparent cover 63. The journal of the rotating shaft 5 passes through the ball bearing 62 and the transparent cover 63 on the corresponding side and is connected to the connecting arm 3 on the same side. The journal of the rotating shaft 5 is sealed and fitted with the skeleton oil seal 64 in the transparent cover 63 on the same side. After the pressure roller 6 is connected to the ball bearing 62 in the bearing seat 61, the rotation flexibility of the pressure roller 6 can be improved. The skeleton oil seal 64 is provided in the transparent cover 63. The sealing fit between the rotating shaft 5 and the skeleton oil seal 64 can ensure that external dust does not enter the bearing seat 61 and affect the rotation of the ball bearing 62.

[0021] When in use, the swivel seat 1 is fixed on the tail crossbeam of the chain grate machine, and each two swivel seats 1 form a group, and a first reinforcing plate 11 is welded between the two swivel seats 1 in the group to strengthen the connection stability between the two swivel seats 1. The second reinforcing plate 22 is welded between the two rotating arms 2 in the group to improve the connection stability between the two rotating arms 2. The position of the connecting arm 3 is adjusted by rotating the composite shaft 4 so that the pressure roller 6 between the two connecting arms 3 is located above the grate plate at the tail of the chain grate machine. The position of the connecting arm 3 can be accurately adjusted through the threaded transmission structure between the composite shaft 4 and the transmission nut 241, so that the two ends of the pressure roller 6 can be fine-tuned to make the pressure roller 6 The rotation axis is parallel to the main shaft axis in the chain grate machine to prevent the grate plate and the pressure roller 6 from being damaged by friction due to the angle between the rotation axis of the pressure roller 6 and the main shaft axis in the chain grate machine. Then, by adjusting the length of the pull rope 34, the pressure roller 6 is in contact with the grate plate in a normal state and does not apply pressure to the grate plate in a normal state. When the chain grate machine is operating normally, the grate plate in a normal state in the chain grate machine contacts the pressure roller 6, and the pressure roller 6 will rotate on its own and will not scratch the grate plate in a normal state. When a raised grate plate contacts the pressure roller 6, the pressure roller 6 will apply pressure to it, and the raised grate plate will automatically reset under the pressure of the pressure roller 6.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. The grate plate reset mechanism in the chain grate machine is characterized by: include: Two rotating arms arranged on the tail crossbeam of the chain grate are rotatable, and a connecting arm is slidably provided on the rotating arm, and a pull rope is provided on the connecting arm, and the pull rope is connected to the material sliding plate upward, and a rotating shaft is provided between the two connecting arms, and a pressure roller is rotatably provided on the rotating shaft, and a bearing seat is welded at both ends of the pressure roller, and a ball bearing is installed in the bearing seat, and a transparent cover is provided on the bearing seat, and the transparent cover rests on the ball bearing, and a skeleton oil seal is provided in the transparent cover, and the shaft neck of the rotating shaft passes through the ball bearing and the transparent cover on the corresponding side and is connected to the connecting arm on the same side, and the shaft neck of the rotating shaft is sealed and fitted with the skeleton oil seal in the transparent cover on the same side.

2. The grate plate resetting mechanism in the chain grate according to claim 1, characterized in that: Two parallel long guide holes are provided on the rotating arm, and two through holes are provided on the connecting arm. The two through holes are aligned one by one with the two long guide holes. An adjusting bolt is passed through between the relatively aligned through holes and the long guide holes, and an adjusting nut is threadedly connected to the adjusting bolt.

3. The grate plate resetting mechanism in the chain grate according to claim 1, characterized in that: A perforated support plate is provided on the rotating arm, a transmission nut is welded on the perforated support plate, a perforated connecting plate is provided on the connecting arm, a composite shaft is provided between the perforated support plate and the perforated connecting plate, a threaded section of the composite shaft is threadedly connected to the transmission nut, and a first retaining ring is clamped after the optical section of the composite shaft passes through the perforated connecting plate, and the first retaining ring is blocked on the perforated connecting plate.

4. The grate plate resetting mechanism in the chain grate according to claim 1, characterized in that: The connection structure between the rotating arm and the tail beam is as follows: a swivel seat is provided on the tail beam, a pin shaft is provided in the swivel seat, the rotating arm is rotatably sleeved on the pin shaft, and a limit plate is provided on both side walls of the rotating arm, and the two limit plates are respectively against the inner walls on both sides of the swivel seat.

5. The grate plate resetting mechanism in the chain grate according to claim 4, characterized in that: Positioning grooves are arranged at both ends of the pin shaft, and limiting plates are arranged on both side walls of the swivel seat. The two limiting plates are respectively clamped in the two positioning grooves of the pin shaft.

6. The grate plate resetting mechanism in the chain grate according to claim 4, characterized in that: A second retaining ring is clamped after the shaft journals at both ends of the rotating shaft extend outwards from the connecting arms on the corresponding sides. The second retaining ring is retained on the outer side wall of the connecting arm on the corresponding side.

7. The grate plate resetting mechanism in the chain grate according to claim 4, characterized in that: A first reinforcing plate is connected between the two rotating seats, and a second reinforcing plate is connected between the two rotating arms.

8. The grate plate resetting mechanism in the chain grate according to claim 1, characterized in that: A lifting lug is provided on the top wall of the connecting arm, and a draw rope is tied to the lifting lug.

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