Trolley axle mounting structure convenient to disassemble and replace in circular cooler
The dust corrosion and deformation problems of the axle of the ring-cooling machine middle trunk is solved through the split shaft seat and joint bearing structure, and stable rotation and efficient disassembly are achieved, which improves production efficiency.
Patent Information
- Application Number
- CN202422539723.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The connecting structure of the axle of the existing ring chiller, the trolley and the rotary frame, is susceptible to dust erosion, resulting in inflexible rotation and difficult to replace after deformation, affecting production efficiency.
It adopts a split shaft seat and joint bearing structure. The axle is connected to the rotary frame through a split shaft seat. The joint bearing provides self-aligning compensation, and the bearing shell and frame oil seal protection is convenient for dismantling and replacing the axle.
Maintain stable rotation when the axle deforms, prevents jamming, improves dismantling efficiency, reduces dust erosion, and ensures smooth unloading.
Smart Images
Figure CN223271686U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an annular cooler, in particular to a trolley axle mounting structure in the annular cooler which is convenient for disassembly and replacement. Background Art
[0002] Annular coolers are the primary equipment for producing oxidized or metallized pellets, cooling pellets discharged from rotary kilns at approximately 1250°C. The rotating frame of the annular cooler continuously moves in a circular motion, passing the hot pellets through different cooling zones for air cooling. Curved trolleys are used to accumulate the pellets. These uniformly spaced trolleys are connected in series via trolley axles and, upon reaching the unloading area, are turned over by the trolley axles for unloading.
[0003] The connection structure between the trolley shaft, trolley and slewing frame on the market is as follows: Figure 1 As shown, a trolley axle is respectively provided at both ends of the bottom of the trolley, and the two trolley axles are respectively connected to the two side walls of the revolving frame through bearings. One of the trolley axles is keyed to the trolley axle seat on the trolley, and the other trolley axle is an optical axis and has an interference fit with the trolley axle seat. A roller arm device is installed at the end of the trolley axle connected to the trolley key, and the roller of the roller arm device is always pressed by the pressure roller device in the circumferential direction. Under the action of the pressure roller device, the roller keeps several trolleys in a horizontal state. When the trolley runs to the unloading area, the pressure roller device no longer presses the roller of the roller arm device, and the trolley drives the two trolley axles to flip 90 degrees by its own weight. During use, dust can easily enter the bearing shaft, causing the trolley shaft to rotate inflexibly, and the trolley shaft is prone to bending and deformation after a long time, which not only affects the operation and unloading of the trolley, but also makes it impossible to remove the bent and deformed trolley shaft from the trolley axle seat during maintenance and replacement. The trolley shaft can only be cut and removed in sections, which is not only very troublesome, but also causes a long maintenance period and affects production efficiency. Utility Model Content
[0004] The purpose of the utility model is to provide a trolley axle mounting structure in an annular cooler which can enable the trolley to be turned over smoothly when the deformation is small and can be easily disassembled and replaced when the deformation is large.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a trolley axle mounting structure in an annular cooler that is easy to disassemble and replace, comprising: a trolley body, a plurality of split axle seats arranged at the bottom of the trolley body, the split axle seats comprising: an upper half seat and a lower half seat, the upper half seat is welded to the bottom of the trolley body, an upper semicircular hole is provided in the upper half seat, and a lower semicircular hole is provided in the lower half seat, the upper half seat and the lower half seat are fixed by bolts after being matched, the upper semicircular hole and the lower semicircular hole are matched to form an axle hole, a trolley axle is passed through between the axle holes, the trolley axle is fixedly connected to the split axle seat, the two ends of the trolley axle respectively extend out of the left and right ends of the trolley body and are connected to the left and right side walls of the rotary frame, joint bearings are provided on the left and right side walls of the rotary frame, and the two ends of the trolley axle are passed through the joint bearings on the corresponding sides.
[0006] Furthermore, the aforementioned trolley axle mounting structure that is easy to disassemble and replace in the annular cooler is provided with bearing seats on both side walls of the rotating frame, and the joint bearing is provided in the bearing seat, and a skeleton oil seal is provided on the inner wall of one end of the bearing seat close to the trolley body, and a bearing bush is mounted on the trolley shaft, and the bearing bush is sealed and fitted with the skeleton oil seal, and the bearing bush rests on the inner ring of the joint bearing on the same side, and a bearing pressure cover is provided on the end of the bearing seat located on one side wall of the rotating frame away from the trolley body, and the bearing pressure cover rests on the outer ring of the joint bearing on the same side, and a bearing pressure ring is provided on the end of the bearing seat located on the other side wall of the rotating frame away from the trolley body, and the bearing pressure ring rests on the outer ring of the joint bearing on the same side, and a sealing ring is provided on the inner wall of the bearing pressure ring, and a copper sleeve is mounted on the trolley shaft, and the copper sleeve passes through the bearing pressure ring and extends into the bearing seat and is sealed and fitted with the sealing ring, and a positioning ring is keyed to the trolley shaft, and the positioning ring rests on the copper sleeve.
[0007] Furthermore, in the aforementioned trolley axle mounting structure that is easy to disassemble and replace in the annular cooler, a spacer ring is provided between the skeleton oil seal and the spherical bearing located in the same bearing seat.
[0008] Furthermore, in the aforementioned annular cooler, the trolley shaft mounting structure is easy to disassemble and replace, wherein a retaining ring is provided on the outer side wall of the bearing seat close to the trolley body.
[0009] Furthermore, the aforementioned annular cooler has a trolley axle mounting structure that is easy to disassemble and replace, wherein four split axle seats are provided at the bottom of the trolley body, the two split axle seats on the left and the two split axle seats on the right are symmetrically arranged with respect to the center of the trolley body, and four lower key slots are provided on the trolley axle, a connecting cam is provided in any one of the lower key slots, and flat keys are provided in the remaining three lower key slots, and limiting portions are provided protruding upward at the left and right ends of the connecting cam, and an upper key slot is provided in the upper semicircular hole of the upper half seat of each split axle seat, and the upper key slots on each upper half seat are respectively engaged with the connecting cam and flat key in the corresponding lower key slot, and the two limiting portions on the connecting cam are respectively abutted against the left and right side walls of the upper half seat engaged therewith.
[0010] Furthermore, the aforementioned ring cooler has a trolley shaft mounting structure that is easy to disassemble and replace, wherein four convex rings are provided on the trolley shaft, and the convex rings and the side walls of the trolley shaft are smoothly connected through an S-shaped curved surface, and the four lower keyways on the trolley shaft are respectively provided on the four convex rings.
[0011] The advantages of the present invention are that when the deformation of the trolley shaft is small, the spherical bearing can compensate by self-aligning, so that the trolley shaft can continue to rotate stably, thereby ensuring that the trolley body can be smoothly turned over in the unloading area for unloading, and the trolley body will not be stuck and unable to unload as soon as the trolley shaft is deformed; the bearings at both ends of the trolley shaft can reduce the erosion of dust under the protection of the retaining ring, skeleton oil seal, bearing seat and spherical bearing, ensure the self-lubrication of the bearings, so that the trolley shaft and the bearing shaft can slide smoothly; when the trolley shaft needs to be replaced, only the split axle seat needs to be disassembled to separate the trolley body from the trolley shaft, so that the trolley shaft can be quickly taken out from the two bearing seats for replacement, which greatly improves the replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 The utility model relates to an installation structure of a center axle of an existing ring cooler.
[0013] Figure 2 The utility model relates to a trolley shaft mounting structure in a ring cooler which is easy to dismantle and replace.
[0014] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of the part connected to the connecting key. DETAILED DESCRIPTION
[0015] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.
[0016] like Figure 2 、 Figure 3As shown, the trolley axle installation structure that is easy to disassemble and replace in the ring cooler described in the utility model includes: a trolley body 1, and four split axle seats 2 are arranged at the bottom of the trolley body 1. The two split axle seats 2 on the left and the two split axle seats 2 on the right are symmetrically arranged with respect to the center of the trolley body 1, which is beneficial to balancing the load distribution of the trolley body 1, thereby improving the structural stability of the trolley body 1 when carrying materials.
[0017] The split axle seat 2 includes: an upper half seat 21 and a lower half seat 22. The upper half seat 21 is welded to the bottom of the trolley body 1. An upper semicircular hole is provided in the upper half seat 21. An upper key groove 211 is provided in the upper semicircular hole. A lower semicircular hole is provided in the lower half seat 22. The upper half seat 21 and the lower half seat 22 are fixed by bolts after being matched. The upper semicircular hole and the lower semicircular hole are matched to form an axle hole with an upper key groove 211. A trolley shaft 3 is passed through the four axle holes. Four convex rings 31 are provided on the trolley shaft 3. The convex ring 31 and the side wall of the trolley shaft 3 are smoothly transitioned through an S-shaped surface. A lower key groove 311 is provided on each convex ring 31. The lower key groove 311 provided on the convex ring 31 can compensate for the weakened strength and rigidity of the trolley shaft 3 when the lower key groove 311 is provided, thereby ensuring the overall load-bearing capacity of the trolley shaft 3. At the same time, The trolley shaft 3 is fixed with the cam 32 and the cam 33 of the upper and lower parts of the trolley shaft 3. The cam 32 is fixed with the cam 32 of the lower and upper parts of the trolley shaft 3. The cam 32 is fixed with the cam 32 of the lower and upper parts of the trolley shaft 3.
[0018] The two ends of the trolley shaft 3 extend out of the left and right ends of the trolley body 1 and are connected to the left and right side walls of the revolving frame 4. A bearing seat 41 is provided on the left and right side walls of the revolving frame 4. A retaining ring 42 is provided on the outer side wall of the bearing seat 41 close to the trolley body 1. The retaining ring 42 is welded to the revolving frame 4. A joint bearing 411 is provided in the bearing seat 41. The trolley shaft 3 passes through the retaining ring 42 and extends into the bearing seat 41 and is connected to the joint bearing 411. A bearing seat 41 is provided on the inner side wall of one end close to the trolley body 1. There is a skeleton oil seal 412, and a spacer ring 413 is provided between the skeleton oil seal 412 and the joint bearing 411 located in the same bearing seat 41. A bearing bush 33 is set on the trolley shaft 3, and the bearing bush 33 is sealed with the skeleton oil seal 412. The bearing bush 33 rests on the inner ring of the joint bearing 411 on the same side. The bush shaft 33 can reduce the erosion of dust under the protection of the retaining ring 42 and the joint bearing 411, ensuring the self-lubrication of the bearing bush 33. A bearing pressure cover 43 is connected to one end by bolts, and the bearing pressure cover 43 abuts against the outer ring of the spherical bearing 411 on the same side, which not only limits the spherical bearing 411, but also prevents dust from entering the bearing seat 41 on this side and contaminating the spherical bearing 411, so as to ensure that the spherical bearing 411 can drive the trolley shaft 3 to rotate smoothly. A bearing pressure ring 44 is connected to the end away from the trolley body 1 in the bearing seat 41 on the other side wall of the revolving frame 4 by bolts, and the bearing pressure ring 44 abuts against the outer ring of the spherical bearing 411 on the same side. It plays a limiting role on the joint bearing 411. A sealing ring 441 is provided on the inner wall of the bearing pressure ring 44. A copper sleeve 34 is mounted on the trolley shaft 3 extending from the bearing pressure ring 44. The copper sleeve 34 passes through the bearing pressure ring 44 and extends into the bearing seat 41 and is sealed with the sealing ring 441. The sealing fit between the copper sleeve 34 and the bearing pressure ring 44 can prevent dust from entering the bearing seat 41 on this side. A positioning ring 35 is keyed to the trolley shaft 3, and the positioning ring 35 rests on the copper sleeve 34 to prevent the copper sleeve 34 from detaching from the trolley shaft 3.
[0019] During use, when the trolley shaft 3 undergoes axial displacement and angular displacement due to flexural deformation, the joint bearing 411 can compensate by self-aligning, so that the trolley shaft 3 can continue to rotate stably, thereby ensuring that the trolley body 1 can be smoothly turned over and unloaded in the unloading area, and the trolley body 1 will not be stuck and unable to unload due to the deformation of the trolley shaft 3. When the deformed trolley shaft 3 needs to be replaced, it is only necessary to disassemble the upper half seat 21 and the lower half seat 22 of the split shaft seat 2, and then remove the lower half seat 22 and the upper half seat 21 from the trolley shaft 3, and the trolley body 1 will be separated from the trolley shaft 3. This makes it convenient to remove the deformed trolley shaft 3 from the two bearing seats 41 for replacement, and then clamp the new trolley shaft 3 into the two bearing seats 41, and respectively clamp a connecting convex key 32 and three flat keys 36 in the four lower keyways 311 of the new trolley shaft 3 to clamp the trolley body 1. On the trolley shaft 3, after the upper keyway 211 of the upper half seat 21 in the split axle seat 2 is inserted into the corresponding connecting cam 32, the two limiting parts 321 on the connecting cam 32 limit the upper half seat 21, thereby positioning the trolley body 1, and then the lower half seat 22 is connected to the corresponding upper half seat 21, and the upper half seat 21 and the lower half seat 22 are engaged and fixed on the trolley shaft 3, and the trolley body 1 is also fixed on the trolley shaft 3, and the trolley body 1 will not shake during operation, which greatly improves the replacement efficiency of the trolley shaft 3.
[0020] 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 trolley shaft installation structure in the ring cooler that is easy to disassemble and replace includes: The trolley body is characterized in that: a plurality of split axle seats are arranged at the bottom of the trolley body, and the split axle seats include: an upper half seat and a lower half seat, the upper half seat is welded to the bottom of the trolley body, an upper semicircular hole is arranged in the upper half seat, and a lower semicircular hole is arranged in the lower half seat, the upper half seat and the lower half seat are fixed by bolts after being matched, the upper semicircular hole and the lower semicircular hole are matched to form an axle hole, a trolley axle is passed through between the axle holes, the trolley axle is fixedly connected to the split axle seat, and the two ends of the trolley axle extend out of the left and right ends of the trolley body respectively and are connected to the left and right side walls of the rotating frame, and joint bearings are arranged on the left and right side walls of the rotating frame, and the two ends of the trolley axle are passed through the joint bearings on the corresponding sides.
2. The trolley axle mounting structure for easy replacement in the annular cooler according to claim 1, characterized in that: The trolley shaft is provided with a bearing seat on each side, and a skeleton oil seal is provided on the inner wall of the bearing seat at one end close to the trolley body. A bearing bush is mounted on the trolley shaft, and the bearing bush is sealed with the skeleton oil seal. The bearing bush rests on the inner ring of the spherical bearing on the same side. A bearing pressure cover is provided on the end of the bearing seat located on one side wall of the slewing frame away from the trolley body, and the bearing pressure cover rests on the outer ring of the spherical bearing on the same side. A bearing pressure ring is provided on the end of the bearing seat located on the other side wall of the slewing frame away from the trolley body, and the bearing pressure ring rests on the outer ring of the spherical bearing on the same side. A sealing ring is provided on the inner wall of the bearing pressure ring, and a copper sleeve is mounted on the trolley shaft. The copper sleeve passes through the bearing pressure ring and extends into the bearing seat and is sealed with the sealing ring. A positioning ring is keyed to the trolley shaft, and the positioning ring rests on the copper sleeve.
3. The trolley axle mounting structure for easy replacement in the annular cooler according to claim 2, characterized in that: A spacer ring is provided between the skeleton oil seal and the spherical plain bearing located in the same bearing seat.
4. The trolley axle mounting structure for easy replacement in the annular cooler according to claim 2, characterized in that: A retaining ring is provided on the outer side wall of the bearing seat close to the trolley body.
5. The trolley axle mounting structure for easy replacement in the annular cooler according to claim 1 is characterized in that: Four split axle seats are provided at the bottom of the trolley body, and the two split axle seats on the left and the two split axle seats on the right are symmetrically arranged with respect to the center of the trolley body. Four lower key grooves are provided on the trolley axle, and a connecting cam is clamped in any one of the lower key grooves, and flat keys are clamped in the remaining three lower key grooves. Limiting portions are provided at the left and right ends of the connecting cam protruding upward, and upper key grooves are provided in the upper semicircular holes of the upper half seats of each split axle seat. The upper key grooves on each upper half seat are respectively clamped with the connecting cam and flat key in the corresponding lower key groove, and the two limiting portions on the connecting cam respectively abut against the left and right side walls of the upper half seat clamped therewith.
6. The trolley axle mounting structure for easy replacement in the annular cooler according to claim 5, characterized in that: Four convex rings are provided on the trolley shaft. The convex rings are smoothly transitionally connected to the side walls of the trolley shaft through S-shaped curved surfaces. The four lower keyways on the trolley shaft are respectively provided on the four convex rings.