Quick-release type self-lubricating grate pressing device

Abstract

The utility model provides a quick release type self-lubricating pressing grate bar device which comprises a rack, a roller and two self-lubricating mechanisms, each self-lubricating mechanism comprises a supporting assembly, a bearing, a connecting shaft and a plurality of self-lubricating inlay blocks, the supporting assemblies are fixed on the rack, one end, far away from the roller, of each supporting assembly is arranged in an opening and closing mode, and the self-lubricating inlay blocks are fixed on the roller. The supporting assembly is provided with an installation space, the bearing is detachably connected into the installation space, a shaft rotating channel is formed in the bearing, the first end of the connecting shaft is rotatably connected into the shaft rotating channel, the second end of the connecting shaft is fixedly connected with the roller, a plurality of inlaying holes are formed in the bearing, and the self-lubricating inlaying blocks are connected into the inlaying holes. In this way, adaptive supply of lubricating agents is achieved under the action of the self-lubricating embedded blocks in cooperation with rotation of the connecting shafts, the situation that the grate bars are blocked by excessive grease is avoided, air permeability is guaranteed, only bearings need to be detached and replaced through the supporting assemblies arranged in an opening and closing mode, overall detachment and replacement are not needed, maintenance and replacement are convenient, and the maintenance cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressing grate bars, in particular to a quick-disassembly self-lubricating pressing grate bar device. Background Art

[0002] At present, most sintering plants in the metallurgical industry use belt type suction sintering machines to produce sintered ore. When the sintering machine trolley runs below, the working surface of the trolley faces downward. Under the action of its own gravity, the grate bars on the trolley tend to droop downward. When the trolley turns to the upper horizontal position, some of the grate bars that droop due to gravity cannot be reset and protrude above the working surface of the trolley. Therefore, it will have an adverse impact on the safe operation of the sintering machine, the uniformity and air permeability of the material layer, and the protection of the grate bars. Therefore, in order to make the grate bars on the trolley flat before feeding and make the thickness of the bottom layer uniform, before the trolley enters the bottom layer, the pressing grate bar device presses the grate bars flat, and the floating grate bars can be pressed back to their original positions to make the trolley grate bars flat, and then enter the bottom layer feeding section.

[0003] The pressing grate bar roller of the traditional pressing grate bar device is installed and fixed by a bearing seat, and the normal operation is ensured by the way of pre-filling lubricating grease or supplying oil through an automatic lubrication system. The existing disadvantages are as follows: 1. In the way of pre-filling lubricating grease, when the grease is consumed, it is necessary to refill the grease again, and the time when the grease is consumed cannot be determined, and only a fixed cycle can be used for refilling. Due to the complexity of the operation conditions, there is too much or too little grease, which is not conducive to the service life of the bearing. 2. In the way of supplying oil by an automatic system, since the oil supply frequency here is very low, the lubrication system cannot well adapt to the oil supply frequency here, and the too low frequency often causes the oil pipe to be blocked. Therefore, there is often too much oil supply, resulting in the oil spilling onto the grate bars, causing local overburning of the grate bars, the material sticking and blocking the gaps between the grate bars, affecting the air permeability, and thus reducing the output and the finished product rate. 3. The disassembly and installation are not convenient. When the bearing fails and needs to be replaced, the whole roller and the frame must be removed together to replace it, which is time-consuming and laborious.

[0004] In view of this, it is necessary to propose a quick-disassembly self-lubricating pressing grate bar device to solve or at least alleviate the above defects. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a quick-disassembly self-lubricating pressing grate bar device to solve the problems that the pressing grate bar grease in the prior art is easy to block the grate bars and the disassembly and assembly are not convenient.

[0006] To achieve the above purpose, the utility model provides a quick-disassembly self-lubricating pressing grate bar device, which includes a frame, a roller arranged on the frame, and two self-lubricating mechanisms arranged oppositely along the axial direction of the roller. The self-lubricating mechanisms are arranged between the frame and the roller; wherein,

[0007] Each of the self-lubricating mechanisms includes a support assembly, a bearing, a connecting shaft, and a plurality of self-lubricating inserts. The support assembly is fixed to the frame, and one end of the support assembly away from the roller is provided in an openable manner. The support assembly has an installation space for installing the bearing. The bearing is detachably connected to the installation space, and an axial rotation channel extending along the axial direction of the roller is provided inside the bearing. The first end of the connecting shaft is rotatably connected to the axial rotation channel, and the second end of the connecting shaft is fixedly connected to the roller.

[0008] A plurality of sets of insertion holes are provided in the bearing at intervals along the extending direction of the first end of the connecting shaft. Each set of insertion holes includes a plurality of insertion holes spaced circumferentially along the first end of the connecting shaft. The self-lubricating inserts are connected to the insertion holes and are abutted against the first end of the connecting shaft.

[0009] Preferably, the support assembly includes a bearing housing and an end cover. The bearing housing is fixed to the frame. The bearing housing has the installation space. The end cover is detachably connected to the bearing housing by bolts.

[0010] Preferably, the first end of the connecting shaft is frustum-shaped, and the axial rotation channel matches the connecting shaft to form a frustum-shaped channel.

[0011] Preferably, the bearing housing is annular. A stop notch extending along its own radial direction is provided at one end of the bearing housing away from the roller. A stop block protrudes radially outward from the side wall of the bearing. The stop block penetrates through the stop notch.

[0012] Preferably, the self-lubricating mechanism further includes a temperature detector. An installation through-hole extending along its own radial direction is further provided in the bearing housing. The temperature detector penetrates through and extends out of the installation through-hole, and the input end of the temperature detector is connected to the outer side wall of the bearing.

[0013] Preferably, the stop block extends out of the stop notch.

[0014] Preferably, a ring-shaped dust-proof cover is further included. An annular groove is provided at one end of the bearing housing close to the roller. One end of the ring-shaped dust-proof cover is connected to the annular groove, and the other end of the ring-shaped dust-proof cover is fixedly connected to the roller.

[0015] Preferably, the self-lubricating inserts are made of graphite.

[0016] Preferably, the number of sets of insertion holes is three, and the three sets of insertion holes are spaced at intervals along the extending direction of the first end of the connecting shaft.

[0017] Preferably, the width of the inlaid hole is 20 mm to 25 mm.

[0018] Compared with the prior art, the utility model provided has the following beneficial effects:

[0019] A quick-release self-lubricating pressing grate bar device provided by the utility model includes a frame, a roller arranged on the frame, and two self-lubricating mechanisms arranged oppositely along the axial direction of the roller. The self-lubricating mechanisms are arranged between the frame and the roller. Each self-lubricating mechanism includes a support assembly, a bearing, a connecting shaft, and a plurality of self-lubricating inlaid blocks. The support assembly is fixed on the frame, and one end of the support assembly away from the roller is arranged to be openable and closable. The support assembly has an installation space for installing the bearing. The bearing is detachably connected in the installation space, and an axial rotation channel extending along the axial direction of the roller is arranged inside the bearing. The first end of the connecting shaft is rotatably connected in the axial rotation channel, and the second end of the connecting shaft is fixedly connected with the roller. A plurality of inlaid hole groups are arranged in the bearing at intervals along the extending direction of the first end of the connecting shaft. Each inlaid hole group includes a plurality of inlaid holes arranged at intervals along the circumferential direction of the first end of the connecting shaft. The self-lubricating inlaid blocks are connected in the inlaid holes and are arranged to abut against the first end of the connecting shaft. In this way, under the action of the self-lubricating inlaid blocks, the adaptive supply of lubricant is realized in cooperation with the rotation of the connecting shaft, thereby avoiding the blockage of the grate bars due to excessive grease, ensuring the air permeability, and only needing to replace the bearing through the openable and closable support assembly without overall disassembly and replacement, which is more convenient for maintenance and replacement and saves the maintenance cost. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 It is an elevation view of the application scenario of the overall structure in an embodiment of the present utility model;

[0022] Figure 2 For Figure 1 the partial enlarged view at A in

[0023] Figure 3 It is a side view of the self-lubricating mechanism in an embodiment of the present utility model;

[0024] Figure 4 It is a cross-sectional view of the bearing in an embodiment of the present utility model;

[0025] Figure 5 Side schematic view of the application scenario of the overall structure in an embodiment of the present utility model.

[0026] The realization of the purpose, functional features and advantages of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.

[0027] Explanation of the reference numerals in the drawings:

[0028] 10, self-lubricating mechanism; 110, support assembly; 111, bearing housing; 1111, stop notch; 1112, annular groove; 112, end cover; 120, bearing; 121, shaft rotation channel; 122, inlay hole; 123, stop block; 130, connecting shaft; 140, self-lubricating inlay block; 150, temperature detector; 160, annular dust cover; 20, roller; 30, frame. Detailed implementation manners

[0029] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0033] Please refer to the attached Figures 1-5, an example of a quick-release self-lubricating press grate bar device provided by the present utility model includes a frame 30, a roller 20 provided on the frame 30, and two self-lubricating mechanisms 10 oppositely arranged along the axial direction of the roller 20. The self-lubricating mechanism 10 is arranged between the frame 30 and the roller 20. First of all, it should be noted that different from the prior art where grease needs to be filled at fixed intervals in pre-filled lubricating grease, the automatic system for oil supply is prone to excessive oil supply and overflows onto the grate bars, and it is inconvenient when disassembling and assembling the bearings, and the whole needs to be replaced, which is time-consuming and laborious. The present application solves the above defects in the prior art by providing a quick-release self-lubricating press grate bar device, specifically as follows:

[0034] Each of the self-lubricating mechanisms 10 includes a support assembly 110, a bearing 120, a connecting shaft 130, and a plurality of self-lubricating inserts 140. The support assembly 110 is fixed to the frame 30, and one end of the support assembly 110 away from the roller 20 is provided in an openable and closable manner. The support assembly 110 has an installation space for installing the bearing 120. The bearing 120 is detachably connected in the installation space, and an axial rotation channel 121 extending along the axial direction of the roller 20 is provided inside the bearing 120. The first end of the connecting shaft 130 is rotatably connected in the axial rotation channel 121, and the second end of the connecting shaft 130 is fixedly connected to the roller 20. A plurality of sets of insertion holes 122 are provided in the bearing 120 at intervals along the extending direction of the first end of the connecting shaft 130. Each set of insertion holes 122 includes a plurality of insertion holes 122 arranged at intervals in the circumferential direction of the first end of the connecting shaft 130. The self-lubricating inserts 140 are connected in the insertion holes 122 and are abutted against the first end of the connecting shaft 130.

[0035] Specifically, the quick-release self-lubricating press grate bar device in the present application includes a frame 30, a roller 20, and two self-lubricating mechanisms 10 oppositely arranged along the axial direction of the roller 20. The frame 30 is usually two oppositely arranged suspension arms for installing and connecting the roller 20. In the present application, it also provides installation for the self-lubricating mechanism 10. By reserving space in advance in the frame 30 for installing and fixing the self-lubricating mechanism 10, the self-lubricating mechanism 10 is arranged between the frame 30 and the roller 20, and the two ends of the roller 20 are respectively connected by the two self-lubricating mechanisms 10.

[0036] Among them, each of the self-lubricating mechanisms 10 includes a support assembly 110, a bearing 120, a connecting shaft 130, and a plurality of self-lubricating inserts 140. The support assembly 110 has an installation space for installing the bearing 120, and is fixed in a space reserved in advance in the frame 30. The bearing 120 is used for the connecting shaft 130 to be rotatably connected, and is detachably connected in the installation space. In this way, by setting the support assembly 110 in an openable form, the support assembly 110 can be opened during replacement, and the bearing 120 can be pulled out to complete the disassembly. Then, replacing the new bearing 120 can complete the maintenance. Therefore, there is no need to disassemble and assemble the entire roller 20 and the frame 30, which is more convenient. The connecting shaft 130 is used to connect the roller 20 and the self-lubricating mechanism 10. Its first end is rotatably connected in the axial rotation channel 121 of the bearing 120, and the second end penetrates and extends into the roller 20 to be fixedly connected with the roller 20. Further, the insertion hole 122 is used for installing the self-lubricating insert 140. A plurality of groups of insertion holes 122 are provided at a position close to the axial rotation channel 121 in the bearing 120, so that after the self-lubricating insert 140 is installed in the insertion hole 122, it abuts against the first end of the connecting shaft 130. Since the self-lubricating insert 140 mainly adopts the principle of solid lubricant, during the sliding contact process after the connecting shaft 130 rotates, the solid lubricant is gradually activated, and lubricating particles are released to the contact interface through frictional heat or pressure, forming a continuous solid lubricating film. This lubricating film effectively separates the two relatively sliding surfaces, greatly reducing the friction and wear caused by direct metal contact, and thus the problem of excessive oil secretion in the automatic oil supply system overflowing onto the grate bars will not occur. In a preferred embodiment of the present application, the self-lubricating insert 140 can be made of graphite material, or can also be made of self-lubricating materials such as ultra-high molecular weight polyethylene, polytetrafluoroethylene, and polyimide. Those skilled in the art can select according to actual needs.

[0037] As a preferred embodiment of the present invention, the support assembly 110 includes a bearing housing 111 and an end cover 112. The bearing housing 111 is fixed on the frame 30. The bearing housing 111 has the installation space, and the end cover 112 is detachably connected to the bearing housing 111 by bolts.

[0038] It should be noted that the bearing housing 111 is used for installing the bearing 120, and the installation space inside it is axially through. In order to protect the exposed bearing 120, the end cover 112 is added to cooperate with the opening and closing. When working normally, the end cover 112 is closed to be in a closed state, and when the bearing 120 needs to be replaced, the end cover 112 is opened to be in an open state. Preferably, the bolt connection method is convenient for disassembly and assembly, and the operation is relatively convenient and the connection is stable.

[0039] As a relatively preferred embodiment of the present utility model, the first end of the connecting shaft 130 is frustum-shaped, and the shaft rotation channel 121 matches the connecting shaft 130 to form a frustum channel.

[0040] It should be noted that when replacing the bearing 120 by adopting the frustum-shaped shaft end connection method, inserting the bearing 120 into the original position can complete the automatic centering of the roller 20, the connecting shaft 130, and the shaft rotation channel 121 of the bearing 120. Utilizing the matching characteristics of the frustum slope and the frustum channel, the phenomenon of axis deviation will not occur, so manual adjustment is not required, further improving the replacement and maintenance efficiency.

[0041] As a preferred embodiment of the present utility model, the bearing housing shell 111 is annular. A stop notch 1111 extending along its own radial direction is provided at one end of the bearing housing shell 111 away from the roller 20. A stop block 123 is convexly provided on the side wall of the bearing 120 along its own radial direction outward, and the stop block 123 penetrates through the stop notch 1111.

[0042] It is worth noting that since the bearing 120 is usually annular, the bearing housing shell 111 can also be set to be annular so that the installation space is directly its inner ring section, and the bearing 120 is installed in the inner ring section of the bearing housing shell 111. In order to prevent the bearing 120 from rotating itself and only the connecting shaft 130 rotates, a stop notch 1111 extending along its own radial direction is provided at one end of the bearing housing shell 111 away from the roller 20. The stop notch 1111 is used to limit the rotation of the bearing 120. By convexly providing a stop block 123 on the side wall of the bearing 120, the stop block 123 penetrates through the stop notch 1111. Since the bearing housing shell 111 is fixed in the frame 30, the stop block 123 and the stop notch 1111 are mutually limited to restrict the rotation of the bearing 120.

[0043] As a preferred embodiment of the present utility model, the self-lubricating mechanism 10 further includes a temperature detector 150. The bearing housing shell 111 is also provided with an installation through hole extending along its own radial direction. The temperature detector 150 penetrates and extends out of the installation through hole, and the input end of the temperature detector 150 is connected to the outer side wall of the bearing 120.

[0044] It should be noted that the temperature detector 150 is used to monitor the temperature of the bearing 120 wall in real time to judge the lubrication effect. Usually, when the self-lubrication effect of the self-lubricating insert 140 begins to weaken, the temperature of the outer wall of the bearing 120 will increase due to increased friction. Under the setting of the temperature detector 150 combined with the control system, when a certain temperature is reached, the temperature detector 150 will feedback the detected temperature to the control system. When normal, the lubrication effect is good and the temperature of the bearing 120 is stable below a reasonable temperature; when the lubrication effect of the bearing 120 is not good, the temperature of the bearing 120 rises and exceeds the set value. At this time, it can be judged that there is a problem with the operation of the bearing 120 or the equipment is operating improperly, thus prompting the operator to check or replace the bearing 120.

[0045] Further, the stop block 123 extends out of the stop notch 1111.

[0046] It should be noted that after the stop block 123 extends out, it can also be used as a handle for technicians to operate. When replacing the bearing 120, the technician can pull out / insert the bearing 120 by holding the extended part of the stop block 123, which is convenient for operation; thus when replacing the bearing 120, open the end cover 112, hold the extended part of the stop block 123 by hand to take out the bearing 120, and then after replacing it with a new bearing 120, directly insert it into the original position. Due to the frustum-shaped connecting shaft 130 end and the connecting channel, the roller 20 can be automatically centered and positioned, so no adjustment is required, and then the end cover 112 can be sealed to complete the replacement.

[0047] Further, it also includes an annular dust cover 160. One end of the bearing housing shell 111 near the roller 20 is provided with an annular groove 1112, and one end of the annular dust cover 160 is connected to the annular groove 1112, and the other end of the annular dust cover 160 is fixedly connected to the roller 20.

[0048] It should be understood that the annular dust cover 160 is used to prevent dust or sintered small materials from polluting or damaging the connecting shaft 130 and the bearing 120. It is annular to facilitate the connecting shaft 130 to pass through, and its side wall is used for dust prevention. Therefore, the annular groove 1112 is opened for the annular dust cover 160 to be installed and connected. One end of it is connected to the annular groove 1112 to cover the entrance of the bearing 120 and surround the connecting shaft 130, and the other end is connected to the roller 20 to meet the dust-proof sealing requirements.

[0049] Further, the number of groups of the insertion holes 122 is three, and the three groups of insertion holes 122 are arranged at intervals along the extension direction of the first end of the connecting shaft 130.

[0050] It should be noted that the number of groups of the inlaid holes 122 can be determined according to the insertion length of the first end of the connecting shaft 130, and the self-lubricating effect can also be considered. In a preferred embodiment of the present application, the number of groups of the inlaid holes 122 is three.

[0051] Furthermore, the width of the inlaid hole 122 is 20 mm to 25 mm.

[0052] It can be understood that the larger the width of the inlaid hole 122, the larger the width dimension of the self-lubricating inlaid block 140, and the better the lubricating effect that can be generated by the sliding. Preferably, the width of the inlaid hole 122 can be set to 20 mm to 25 mm, and those skilled in the art can select according to actual needs.

[0053] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A quick-release self-lubricating pressing grate bar device, characterized in that, It includes a frame, a roller disposed on the frame, and two self-lubricating mechanisms oppositely arranged along the axial direction of the roller. The self-lubricating mechanisms are disposed between the frame and the roller; wherein, Each of the self-lubricating mechanisms includes a support assembly, a bearing, a connecting shaft, and a plurality of self-lubricating inserts. The support assembly is fixed on the frame, and one end of the support assembly away from the roller is disposed in an openable manner. The support assembly has an installation space for installing the bearing. The bearing is detachably connected in the installation space, and an axial rotation channel extending along the axial direction of the roller is formed inside the bearing. The first end of the connecting shaft is rotatably connected in the axial rotation channel, and the second end of the connecting shaft is fixedly connected to the roller; A plurality of sets of insertion holes are formed in the bearing at intervals along the extending direction of the first end of the connecting shaft. Each set of insertion holes includes a plurality of insertion holes spaced circumferentially along the first end of the connecting shaft. The self-lubricating inserts are connected in the insertion holes and are abutted against the first end of the connecting shaft.

2. The quick-release self-lubricating press grate bar device according to claim 1, characterized in that, The support assembly includes a bearing housing and an end cover. The bearing housing is fixed on the frame. The bearing housing has the installation space. The end cover is detachably connected to the bearing housing by bolts.

3. The quick-release self-lubricating pressing grate bar device according to claim 1, characterized in that, The first end of the connecting shaft is in a frustum shape, and the axial rotation channel matches the connecting shaft and is in a frustum-shaped channel.

4. The quick-release self-lubricating pressing grate bar device according to claim 2, characterized in that, The bearing housing is in an annular shape. A stop notch extending along its own radial direction is formed at one end of the bearing housing away from the roller. A stop block protrudes radially outward from the side wall of the bearing. The stop block penetrates through the stop notch.

5. The quick-release self-lubricating pressing grate bar device according to claim 4, wherein The self-lubricating mechanism further includes a temperature detector. The bearing housing further has an installation through hole extending along its own radial direction. The temperature detector penetrates and extends out of the installation through hole, and the input end of the temperature detector is connected to the outer side wall of the bearing.

6. The quick-release self-lubricating pressing grate bar device according to claim 4, wherein, The stop block extends out of the stop notch.

7. The quick-release self-lubricating pressing grate bar device according to claim 2, wherein, It further includes an annular dust cover. An annular groove is formed at one end of the bearing housing close to the roller. One end of the annular dust cover is connected in the annular groove, and the other end of the annular dust cover is fixedly connected to the roller.

8. The quick-release self-lubricating press grate bar device according to claim 7, characterized in that, The self-lubricating inserts are made of graphite material.

9. The quick-release self-lubricating pressing grate bar device according to claim 3, characterized in that, The number of the sets of insertion holes is three, and the three sets of insertion holes are spaced at intervals along the extending direction of the first end of the connecting shaft.

10. The quick-release self-lubricating pressing grate bar device according to claim 1, characterized in that, The width of the insertion holes is 20 mm to 25 mm.

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