Discharging track of circular cooler and track system

Abstract

The utility model provides an unloading track of a circular cooler, the unloading track comprises an unloading section track used for realizing the downward turning unloading of a trolley, the outer side surface and the inner side surface of the unloading section track are planes, and the hardness values of all parts in the cross section of the unloading section track are consistent. The utility model further provides a track system of the circular cooler, the track system comprises a horizontal track and the discharging track, the cross section of the horizontal track is square, and hardness values of all positions in the cross section are consistent. According to the utility model, the hardness values of all parts in the cross sections of the unloading track and the horizontal track are consistent, and the problems that the horizontal track is crushed and abraded and the unloading track is abraded due to washing of mineral aggregate are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering ring coolers, in particular to a discharge track and a track system of a ring cooler. Background Art

[0002] The ring cooler is a cooling device used for sintering mineral materials in the steel industry. It is a circular rotating body formed by multiple trolleys hinged on the support beam of the rotating frame. The trolleys and the materials they carry are supported on the track through the wheels of the trolleys. The wheels make uniform circular motion along the horizontal track. When the materials are cooled, the trolley enters the unloading area, completes the downward unloading through the unloading track in the unloading area, and returns to the horizontal track again after the upward reset. In the prior art, the horizontal track is generally made of manganese steel rolled track, which is bent to a specified radius and fixed to the track support beam by pressing blocks, bolts, stop blocks, etc. The unloading track is made of high-quality carbon steel or low-alloy structural steel, which is bent at multiple points and then welded with ribs at the bottom, and a wear-resistant alloy layer of about 8mm is welded on the top, and installed on the support beam below through a support base. With the popularization of large-scale ring coolers, the weight of each trolley and material can reach more than 30t, and the wheel on one side can bear more than 15t, which puts higher requirements on the track hardness and wear resistance.

[0003] Since the quenching depth of the horizontal track is limited, the hardness value decreases from the track surface to the track center. As the wheel load increases, it is difficult to avoid the crushing and wear of the horizontal track. When the track is severely worn, the friction wheel bearing of the ring cooler drive device will be damaged due to the limited compensation of the swing frame. Therefore, the production site generally replaces the track locally every year according to the crushing and wear conditions. When replacing the track, the machine must be stopped, the trolley must be lifted up, and several bolts must be removed before the track can be pulled out for replacement. When replacing, the radial size of the track must be measured through the gap between the trolleys, which is very time-consuming and labor-intensive.

[0004] The unloading track is a spatial spherical curve, generally including an entry track, an unloading track and at least one return track. The unloading track is used for the wheels of the trolley to go down to open the trolley body for unloading. It is often washed by ore materials, and the surfacing layer is very easy to wear. Generally, it needs to be re-surfaced or replaced every 1 to 2 months. When the surfacing layer of the unloading track is damaged, the trolley will swing violently during unloading, causing damage to the joint bearings at the hinge position of the trolley or loose bolts and breakage accidents. Since the unloading track is set in the unloading hopper and is in the shape of a spatial curve, it is often difficult to ensure consistency with the theoretical value using the hot bending process, and the deviation is generally 3 to 8 mm. During the initial installation, a temporary horizontal track in the area can be erected through the center reference of the ring cooler, and the surfacing height can be adjusted on-site by hanging a plumb line to compensate for certain manufacturing and installation errors. However, when overlay welding is performed after production, it is impossible to measure through the reference points due to the obstruction of the trolley. It can only be done by layered overlay welding based on experience, and then polishing is performed based on the running marks of the ring cooler trolley. This is very time-consuming and has limited effect.

[0005] It can be seen that the crushing and wear of the horizontal track and the damage of the discharge track will have an adverse effect on the operation of the trolley; therefore, there is an urgent need for a discharge track and track system of a ring cooler to solve the problems existing in the prior art. Utility Model Content

[0006] The utility model aims to provide a discharge track of a ring cooler, aiming to solve the problem that the cladding layer of the discharge track in the prior art is washed by mineral materials and is easily damaged. The specific technical solution is as follows:

[0007] A discharge track of a ring cooler, comprising a discharge section track for realizing downward flipping and unloading of a trolley, wherein the outer side surface and the inner side surface of the discharge section track are both planes, and the hardness values ​​at various locations in the cross section of the discharge section track are consistent.

[0008] Preferably in the above technical scheme, permanent marking points are provided on both the outer wall and the inner wall of the discharge hopper, wherein the permanent marking point on the outer wall of the discharge hopper is flush with the track surface of the lowest position marking point of the outer discharge section track, and the permanent marking point on the inner wall of the discharge hopper is flush with the track surface of the lowest position marking point of the inner discharge section track.

[0009] Preferably in the above technical solution, an extension line of a line connecting the projections of the permanent marking points on the outer wall of the discharge hopper and the permanent marking points on the inner wall of the discharge hopper in the XY plane passes through the center line of the ring cooler.

[0010] Preferably in the above technical solution, the sharp corners of the top surface of the unloading section track are rounded.

[0011] Preferably in the above technical solution, the unloading track also includes an entry section track and at least one return section track, and the outer side surface and the inner side surface of the entry section track and / or the return section track are both planes and the hardness values ​​at various locations in the cross section are consistent.

[0012] The utility model also provides a track system for an annular cooler, which aims to solve the problems in the prior art that the horizontal track is easily crushed and worn, and the unloading track is easily worn by the ore material. The specific technical solution is as follows:

[0013] A track system for a ring cooler comprises a horizontal track and the above-mentioned unloading track. The cross section of the horizontal track is square and the hardness values ​​at various locations in the cross section are consistent.

[0014] Preferably in the above technical scheme, a mounting base plate is provided at the lower portion of the horizontal rail, a mounting blind hole is provided on the bottom surface of the horizontal rail, and a mounting through hole is provided on the mounting base plate; connecting parts are arranged in the mounting through holes and the mounting blind holes to connect the horizontal rail and the mounting base plate together; the mounting base plate is fixed on the horizontal rail support beam, and an end of the mounting through hole away from the horizontal rail is blocked by the upper surface of the horizontal rail support beam.

[0015] Preferably, the above technical solution also includes a limiting pressure block, a limiting groove is set on the side of the horizontal rail, the limiting pressure block is inserted into the limiting groove and the limiting pressure block, the mounting base plate and the horizontal rail support beam are fixed together by a bolt assembly.

[0016] Preferably in the above technical solution, the horizontal track and the unloading section track are both made of a material with a Brinell hardness of 380 to 420.

[0017] Preferably in the above technical solution, between two adjacent sections of horizontal rails, a protruding portion of one section of horizontal rail is inserted into a recessed portion of another section of horizontal rail to achieve docking between the two adjacent sections of horizontal rails.

[0018] The application of the technical solution of the utility model has the following beneficial effects:

[0019] The utility model solves the problem that the ring cooler track in the prior art is easily crushed and worn. The cross section of the horizontal track is set to be square and is made of a material with a hardness of HB=380-420. The hardness within the cross section of the horizontal track is consistent, which can effectively solve the problem of track crushing caused by inconsistent hardness at various locations in the cross section of the horizontal track in the prior art. The horizontal track of the utility model can be maintained for more than 8 to 10 years without replacement; the unloading section track in the unloading track of the utility model adopts a flat plate structure to replace the high-quality carbon steel or low-alloy structural steel multi-point bending track plus a welded wear-resistant layer structure in the prior art. The unloading section track also adopts a material with a hardness of HB=380-420. The hardness values ​​at various locations in the cross section of the unloading section track are consistent, and its wear resistance is much higher than the welded wear-resistant layer plus multi-point bending track method in the prior art. The unloading section track in the utility model can be maintained for 1.5 to 2 years without replacement, which solves the problem that the unloading section track in the prior art is easily worn by mineral materials.

[0020] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 This is a schematic diagram of the unloading operation of the ring cooler;

[0023] Figure 2 It is a structural schematic diagram of the unloading track;

[0024] Figure 3 It is a cross-sectional view of the trolley and the unloading track;

[0025] Figure 4 yes Figure 3 Sectional view at the middle BB;

[0026] Figure 5 yes Figure 4 A partial enlarged view of point D in the middle;

[0027] Figure 6 yes Figure 5 Sectional view at CC;

[0028] Figure 7 yes Figure 6 The schematic diagram of measuring the swing angle of the trolley;

[0029] Figure 8 yes Figure 7 A partial enlarged view of point E in the middle;

[0030] Fig. 9 It is a cross-sectional view of the first location of the horizontal track;

[0031] Fig.10 It is a cross-sectional view of the second location of the horizontal track;

[0032] Fig.11 yes Figure 2 Sectional view at AA in the middle;

[0033] Fig.12 It is a schematic diagram of the connection structure between the unloading section track and the return section track 1;

[0034] Fig.13 It is a structural diagram of the unloading section track;

[0035] Among them, 1. trolley, 1.1. wheels, 1.2. trolley articulated seat, 2. slewing frame support beam, 3. horizontal track, 4. horizontal track support beam, 5. unloading track, 5.1. entry section track, 5.2. unloading section track, 5.3. return section track one, 5.4. return section track two, 6. support base, 7. unloading rail support beam, 8. unloading hopper, 8.1. outer wall of unloading hopper, 8.2. inner wall of unloading hopper, 9. distance measuring device, 10. unloading area sealing cover, 11. hinge pin, 12. adjustment mounting plate group, 12.1. mounting plate, 12.2. connecting plate, 13. detection rod one, 14. detection rod two, 15. permanent marking point, 16. installation base plate, 17. limit pressure block, 18. splint, 19. gasket, 20. pad. DETAILED DESCRIPTION

[0036] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below, and preferred embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0038] Embodiment 1:

[0039] Figure 1 This is a schematic diagram of the unloading operation of the ring cooler. The ring cooler is a low-speed heavy-load equipment. It is a circular rotating body formed by multiple trolleys 1 hinged on the rotating frame support beam 2. The trolleys 1 and the materials they carry are supported on the track through the wheels 1.1 of the trolleys. The wheels 1.1 make uniform circular motion along the horizontal track 3. After the material is cooled, the trolley 1 enters the unloading area, completes the downward unloading through the unloading track 5 of the unloading area, and returns to the horizontal track 3 again when it returns to the upward position.

[0040] like Figure 2 As shown, the unloading track 5 is a spatial spherical curve, generally including an entry track 5.1, a unloading track 5.2 and at least one return track. Figure 2The middle unloading track 5 includes two return track sections, namely the return track 1 5.3 and the return track 2 5.4. Among them, the entry track 5.1 is used for connecting and transitioning with the horizontal track 3, with a short distance and rarely replaced. The unloading track 5.2 is used for the wheels 1.1 of the trolley to go down to open the trolley body for unloading. It is often washed by the ore and is very easy to wear, requiring frequent surfacing or replacement. When the trolley passes through the return track 1 and 2, it is in an empty state, and the pressure on one side of the wheel does not exceed 2t, with very little wear and tear, and basically no replacement.

[0041] Since the unloading section track 5.2 is often eroded by the ore, its cladding layer is damaged very quickly, which will cause the trolley to swing violently when unloading, causing the joint bearings at the hinge position of the trolley to be damaged or the bolts to loosen and break, resulting in accidents. In this regard, this embodiment provides a ring cooler unloading monitoring method to monitor the working state of the unloading section track and the trolley operation state to ensure the safe production of the ring cooler.

[0042] To facilitate subsequent understanding, the coordinate system in the accompanying drawings of this embodiment is first explained here, where the X direction is the radial direction of the ring cooler, the Y direction is the movement direction of the trolley, and the Z direction is the height direction of the ring cooler.

[0043] like Figure 1-Figure 8 As shown, the annular cooler unloading monitoring method in this embodiment includes:

[0044] A detection rod 13 is arranged at the end center of the hinge pin 11 between the trolley 1 and the rotating frame support beam 2, and the hinge pin 11 is used to realize the hinge connection between the trolley 1 and the rotating frame support beam 2, so as to achieve the purpose of subsequent trolley flipping and unloading; a detection rod 2 14 is arranged on the trolley hinge seat 1.2 of the trolley 1, and the trolley hinge seat 1.2 is a component for hinge connection between the trolley and the rotating frame support beam 2. When the trolley enters the unloading track to unload downward, the detection rod 2 will rotate around the hinge point (i.e., the hinge pin 11) together with the trolley; the detection rod 1 13 and the detection rod 2 14 are located on the same side of the trolley, and a distance measuring device 9 is arranged on the side of the detection rod 1 13 and the detection rod 2 14 away from the trolley 1, and the distance measuring device 9 includes a measuring end 1 and a measuring end 2; wherein, the measuring end 1 is used to measure the distance X1 from it to the detection end face of the detection rod 1 13, and the measuring end 2 is used to measure the distance X2' from it to the detection end face of the detection rod 2 14;

[0045] Specifically, in this embodiment, the distance measuring device 9 is arranged on the unloading area sealing cover 10, specifically, it is arranged on the inner side of the outer side wall of the unloading area sealing cover 10; the distance measuring device 9 is a multi-point infrared laser rangefinder, which can measure X1 and X2' respectively. Of course, in some embodiments, two rangefinders may be directly arranged, and each rangefinder measures a distance value. This method is also feasible.

[0046] Furthermore, when the trolley 1 moves to the measuring position during the unloading process, X1 and X2' are obtained; when at the measuring position, the measuring end 2 and the detection rod 2 14 are in the same vertical plane and the positions of the two in the Z direction are different, and the measuring end 1 and the detection rod 1 13 are flush (that is, the positions of the two in the Z direction are consistent), so that X2' and X1 can be projected on the same plane (specifically the XZ plane) to facilitate the subsequent accurate calculation of the swing angle α of the trolley. If the measuring end 2 and the detection rod 2 14 are not in the same vertical plane, this will cause X2' to be a spatial dimension in the XYZ coordinate system, resulting in complicated subsequent calculations or the inability to calculate the swing angle α of the trolley;

[0047] Furthermore, based on the Z-direction distance X3 between the measuring end one and the measuring end two, the Z-direction distance X5 between the hinge pin 11 and the detecting rod two 14, and X1, the theoretical value X2 of the distance from the measuring end two to the detecting end surface of the detecting rod two 14 is calculated; and based on the difference X2' between X2' and X2, the swing angle α of the trolley 1 is calculated.

[0048] For details, see Figure 6 , according to formula 1), the theoretical value X2 of the distance between the measuring end 2 and the detection end surface of the detection rod 2 14 is calculated as:

[0049]

[0050] For details, see Figure 6-Figure 8 , because the difference X2" is very close to the actual chord length X6 of the swing angle α (the deviation does not exceed the accuracy of the rangefinder), the difference X2" can be approximated as the chord length of the swing angle α, and the swing angle α of the trolley 1 can be calculated according to formula 2):

[0051]

[0052] Wherein: X4 is the distance along the X direction between the center of the detection end surface of the detection rod 2 and the swing center O of the trolley (referring to the swing center of the joint bearing).

[0053] Preferably, since the detection rod 2 14 will swing at an angle α as the trolley swings, in order to ensure that the measuring end 2 can smoothly detect the detection end face of the detection rod 2, the detection end face of the detection rod 2 is set to an inclined plane facing the measuring end 2 in this embodiment. Specifically, in the initial state, the inclined plane is perpendicular to the ranging line between the measuring end 2 and the detection rod 2, and the inclination angle of the inclined plane = arctan(X1 / (X5-X3)).

[0054] Furthermore, when the states of the trolley and the unloading rail are both good, the swing angle of the trolley is small and within the normal swing range. Therefore, by setting the swing angle range of the trolley, the state of the trolley or the unloading rail can be obtained according to the calculated swing angle α. Specifically: when the swing angles α of N consecutive trolleys are not within the swing angle range, it is determined that there is an abnormality in the working state of the unloading rail 5, where N is a natural number greater than or equal to 2; when the trolleys whose swing angles α are not within the swing angle range are discontinuous, it is determined that there is an abnormality in the operation of the trolleys whose swing angles α are not within the swing angle range.

[0055] Specifically, there will be a certain deviation between the trolley swing angle calculated by formula 2) and the theoretical value. This is caused by the fact that the distance measuring point position of the second detection rod caused by the swing of the trolley is not unique within the detection end surface. In order to reduce the misjudgment caused by this factor, the allowable value of the trolley swing angle should be set to a range value, and the limit value of the range value is determined according to the maximum swing angle of the joint bearing.

[0056] Furthermore, in this embodiment, a visual device is arranged downstream of the measuring position (that is, the trolley passes through the monitoring range of the visual device after passing the measuring position), and the visual device is used to record the number of the trolley whose swing angle α is not within the swing angle range. Specifically, when it is determined that the swing angle α of the trolley is not within the swing angle range, the visual device performs image acquisition after t time to obtain the number of the trolley, where t = arc length distance between the measuring position and the installation position of the visual device / current machine speed, and the current machine speed is obtained by reading from the central control of the ring cooler. Preferably, the visual device in this embodiment is a camera or a camera, and the visual device is installed on the skeleton column at the exit of the sealing cover of the unloading area. The exit here refers to the end of the sealing cover of the unloading area where the trolley drives out, so as to avoid the sealing cover of the unloading area blocking the collection field of view of the visual device.

[0057] Specifically, the staff can determine whether there is an abnormality in the operating status of a single trolley or in the working status of the unloading track based on the trolley number obtained by the visual equipment; when there is an abnormality in the operating status of a single trolley, the staff can check the bolts, spherical bearings and trolley wheels at the hinge position of the trolley based on the feedback trolley number; when there is an abnormality in the working status of the unloading track 5, the staff should check the unloading track in time and arrange for track replacement or maintenance.

[0058] Furthermore, in this embodiment, the opening of the trolley 1 at the measuring position is set to β, where β is 25° to 30°; Figure 4As shown, it is known to those skilled in the art that the opening of each trolley at the same position of the unloading section track 5.2 is the same. In actual engineering, it is found that the unloading section track 5.2 is most seriously damaged by scouring when the trolley opening is 25° to 30°. Therefore, the measurement position is set when the trolley opening is 25° to 30°, and the damage of the track can be discovered in time. In this embodiment, only one measurement position is set. In some embodiments, multiple measurement positions and corresponding multiple monitoring devices may be set, wherein the measurement position is not limited to the position where the trolley opening is 25° to 30° (such as the return section track one and two, the entry section track and the other positions of the unloading section track), so as to achieve the effect of monitoring at multiple positions of the unloading track; wherein: the monitoring device refers to the distance measuring device, the detection rod one and the detection rod two. When multiple measurement positions are set, the detection rod one can share one.

[0059] Preferably, when the trolley 1 in the present embodiment reaches the measuring position, the detection rod 1 13 and the detection rod 2 14 are located on the same vertical plane, and the detection rod 2 13 is located below the detection rod 1 14. Such a setting can achieve that X1 and X2' are on the same plane, without the need for projection processing, which is convenient for subsequent calculations. Of course, in some embodiments, when the measuring position may be set, the detection rod 1 and the detection rod 2 are not on the same vertical plane, that is, X1 and X2' are respectively on two different vertical planes. In this setting, X1 and X2' need to be projected onto the same plane for calculation. In this case, X5 can also be directly obtained. This is because after the measuring position is fixed, the relative position between the hinge pin 11 and the detection rod 2 14 at the measuring position is also fixed.

[0060] Preferably, in order to realize that the detection rod 1 13 and the detection rod 2 14 are in the same vertical plane when measuring the position, the detection rod 2 14 in this embodiment is arranged on the trolley articulated seat 1.2 by adjusting the mounting plate group 12, and the adjusting mounting plate group 12 allows the detection rod 2 14 to be adjusted in the circumferential position with the detection rod 1 13 as the center, such as Figure 4-Figure 6 As shown, the detection rod 2 14 can be adjusted in the circumferential direction with the detection rod 1 13 as the center, so that the detection rod 1 13 and the detection rod 2 14 are on the same vertical plane when measuring the position.

[0061] See also Figure 6, the adjustment mounting plate group 12 includes a mounting plate 12.1 and a connecting plate 12.2, the mounting plate 12.1 is arranged on the trolley articulated seat 1.2 through the connecting plate 12.2, the mounting plate 12.1 is provided with an arc-shaped adjustment hole, and the detection rod 14 passes through the adjustment hole and is locked with nuts on both sides of the mounting plate 12.1. Specifically, the number of the connecting plates 12.2 in this embodiment is two, and the upper side and the lower side of the mounting plate 12.1 are respectively connected to the trolley articulated seat 1.2 through the connecting plate 12.2. In some embodiments, the connecting plate 12.2 may be only one, and the connecting plate 12.2 and the mounting plate 12.1 form an L-shaped or T-shaped structure. In some embodiments, the mounting plate 12.1 may include an upper half and a lower half, and the upper half and the lower half are respectively arranged on the trolley articulated seat 1.2 through the connecting plate 12.2, and the arc-shaped adjustment hole is formed between the upper half and the lower half. Furthermore, the adjustable mounting plate assembly 12 in this embodiment can also adjust the value of the dimension X4, that is, it is achieved by adjusting the length of the second detection rod 14 inserted into the adjustment hole.

[0062] Preferably, the deviation amount of the trolley can also be calculated based on the measured X1, specifically: before the ring cooler is running, measure and obtain X1 when no deviation occurs and use it as the initial value; after the ring cooler is running, if the measured X1 is within the set recognition range, then the X1 obtained in this measurement is considered to be a valid value, and the deviation amount of the trolley is obtained by subtracting the X1 measured this time from the initial value; wherein the recognition range is [initial value - allowable deviation value, initial value + allowable deviation value], and the allowable deviation value is set according to the deviation amount allowed by the structure of the ring cooler itself.

[0063] Preferably, the length and diameter of the detection rod 13 and the detection rod 2 14 should be matched according to their installation position, the ranging range of the ranging device and the swing angle of the trolley, and the problem of the length and diameter of the detection rod 1 or 2 being too small, which may lead to the inability to successfully detect the detection rod 1 or 2 during ranging and cause misjudgment, should be avoided.

[0064] The monitoring method of this embodiment can provide real-time feedback on the operating status of the trolley and the working status of the unloading track, and can promptly detect excessive swing angles of the trolley caused by damage to the trolley itself and excessive swing angles of the trolley caused by damage to the unloading track. At the same time, the deviation of the trolley can also be calculated in real time according to X1, providing effective technical guarantee for the safe production of the ring cooler.

[0065] Embodiment 2:

[0066] like Figure 1As shown, the ring cooler is a circular rotating body formed by multiple trolleys 1 hinged on the rotating frame support beam 2. The trolleys 1 and the materials they carry are supported on the track through the wheels 1.1 of the trolleys. The wheels 1.1 make uniform circular motion with a radius of R along the horizontal track 3. After the materials are cooled, the trolley 1 enters the unloading track of the unloading area. The unloading track is a spatial spherical curve. It completes the downward unloading and upward reset through the unloading track 5 and enters the horizontal track 3 again.

[0067] The horizontal track 3 in the prior art is generally made of manganese steel rolled track, which is bent to a specified radius and fixed to the track support beam through a pressure block, bolts, stop blocks, etc.; the unloading track 5 is generally made of high-quality carbon steel or low-alloy structural steel, which is bent at multiple points and welded with a rib plate at the bottom, and a wear-resistant alloy layer of about 8mm is welded on the top, and installed on the lower support beam through a support base. With the popularization of large-scale annular coolers, the weight of each trolley and material can reach more than 30t, and the single-side wheel can bear more than 15t, which puts higher requirements on the track hardness and wear resistance.

[0068] Since the quenching depth of the horizontal track is limited, the hardness value decreases from the track surface to the track center, so it is difficult to avoid the crushing and wear of the horizontal track. The unloading track 5 is a spatial spherical curve, generally including an entry track 5.1, an unloading track 5.2 and at least one return track, wherein the entry track 5.1 is used to connect and transition with the horizontal track 3, the distance is short, and the 8mm surfacing layer can generally meet production needs and is rarely replaced. The unloading track 5.2 is used for the wheels 1.1 of the trolley to go down to open the trolley body for unloading. It is often washed by the ore, and the surfacing layer is very easy to wear. Generally, it needs to be re-surfaced or replaced every 1 to 2 months. When the trolley passes through the return track, it is in an empty state, and the pressure on the wheels on one side does not exceed 2t, with very little wear and tear, and basically no replacement.

[0069] See also Figure 1 , Figure 2 , Figure 9-13 In order to solve the problem that the track of the ring cooler in the prior art is easily crushed and worn, this embodiment provides a track system of the ring cooler, which is as follows:

[0070] To facilitate subsequent understanding, the coordinate system in the accompanying drawings of this embodiment is first explained here, where the X direction is the radial direction of the ring cooler, the Y direction is the movement direction of the trolley, and the Z direction is the height direction of the ring cooler.

[0071] The track system includes a horizontal track 3 and a discharge track 5, and the horizontal track 3 and the discharge track 5 enable the trolley to perform a circular motion with a radius R, and to complete the discharge when descending and to return to the original position when ascending.

[0072] See also Fig. 9 and Fig.10In this embodiment, the cross section of the horizontal track 3 is square, and the horizontal track 3 is made by CNC segmented blanking; therefore, the roundness of the horizontal track can be guaranteed, and the error can be controlled within ±0.05mm, which is much higher than the cold-bent rolled track (the deviation of the cold-bent rolled track is above ±2mm). Furthermore, the cross section of the horizontal track 3 is a square cross section, and the hardness is consistent within the cross section, which can effectively prevent the occurrence of top surface collapse.

[0073] Preferably, the horizontal rail 3 is made of a material with a hardness of HB=380-420. Since the hardness within the cross-sectional range of the horizontal rail in this embodiment is consistent, the horizontal rail 3 in this embodiment can be used for more than 8-10 years without replacement; in this embodiment, the preferred material of the horizontal rail is 80mm thick wear-resistant alloy steel.

[0074] Preferably, Fig. 9 As shown, the lower part of the horizontal rail 3 is provided with a mounting base plate 16, the bottom surface of the horizontal rail 3 is provided with a mounting blind hole, the mounting base plate 16 is provided with a mounting through hole, the horizontal rail 3 is arranged on the mounting base plate 16, and the horizontal rail 3 is connected to the mounting base plate 16 by connecting members passing through the mounting through hole and the mounting blind hole in sequence; the mounting base plate 16 is fixed to the horizontal rail support beam 4 by bolts, and the end of the mounting through hole away from the horizontal rail 3 is blocked by the upper surface of the horizontal rail support beam 4, ensuring that the connecting member will not be loosened and fall out permanently, thereby ensuring the tight connection between the mounting base plate 16 and the horizontal rail 3. Specifically, the connecting member in this embodiment is a screw, and the mounting through hole is a countersunk hole; in some embodiments, the connecting member can also be a pin or a block, etc., and the connecting member is respectively interference-fitted with the horizontal rail 3 and the mounting base plate 16 to achieve the connection between the horizontal rail 3 and the mounting base plate 16.

[0075] Preferably, Fig.10 As shown, when the annular cooler is running, the wheel 1.1 of the trolley 1 generates friction force on the track along the running direction, which will cause the horizontal track 3 to have a tendency to move in the circumferential direction, causing the connecting piece to be subjected to shear force. In order to solve this problem, in this embodiment, a limit groove is set on the side of the horizontal track, and a limit pressure block 17 is inserted into the limit groove. Then, the limit pressure block 17 is connected to the installation base plate 16 and the horizontal rail support beam 4 by bolts, and the shear force is shared by the limit pressure block 17 to prevent the connecting piece from being sheared.

[0076] Preferably, in this embodiment, two adjacent horizontal rails 3 are connected by protrusions and recesses, that is, the protrusion of one horizontal rail 3 is inserted into the recessed portion of another horizontal rail 3, and the corners are rounded to ensure that the wheels pass smoothly through the connection area between the two adjacent horizontal rails 3.

[0077] Preferably, the tread width of the wheel in this embodiment is greater than or equal to the sum of the width of the horizontal track and the allowable deviation. When this condition is met, the width of the horizontal track can be increased as much as possible by selecting wheels with a larger tread width, which can not only reduce contact stress but also better adapt to the deviation of the ring cooler. In this embodiment, the width of the horizontal track is preferably 140mm, the wheel tread width is preferably 175mm, and the distance between the wheel flange and the side of the horizontal track is preferably 35mm.

[0078] See also Figure 2 , Figure 11-13 The unloading track 5 includes an entry track 5.1, a unloading track 5.2 and at least one return track. Specifically, in this embodiment, the unloading track 5 includes two return tracks, namely, a return track 1 5.3 and a return track 2 5.4.

[0079] In order to solve the problem that the unloading section track 5.2 is often washed by the ore and the cladding layer is easily worn, the unloading section track 5.2 in this embodiment adopts a flat plate to replace the structure of the high-quality carbon steel or low-alloy structural steel multi-point bending track with a cladding wear-resistant layer in the prior art (the track in the prior art is a spherical curve, and the radius SR of the spherical curve passes through the center of the annular cooler), that is, the outer side and inner side of the unloading section track 5.2 in this embodiment are both flat, and the cross section of the unloading section track is square. Fig.13 As shown, Fig.13 The dotted line in the figure is a spherical curve track with multiple points of bending in the prior art, and the solid line is the unloading section track 5.2 in this embodiment. The lower part of the unloading section track 5.2 in this embodiment is welded with a rib plate, and the lower part of the unloading section track 5.2 is fixed to the support base 6 by bolts, and the support base 6 is arranged on the unloading rail support beam 7.

[0080] After calculation and analysis, it is found that after the unloading section track 5.2 in this embodiment is connected with the entry section track 5.1 and the return section track 5.3 respectively, on the basis of ensuring that the height value of the unloading section track 5.2 (referring to the distance from each point on the top surface of the unloading section track to the top surface of the horizontal track) is correct, the radial deviation value of each point is between 0 and 10 mm, and the larger the radius R of the annular cooler track, the smaller the radial deviation value, the allowable deviation of the trolley can well offset the problems caused by the radial deviation, and at the same time, by increasing the tread width of the wheel, the radial deviation can also be well adapted (the radial deviation of the unloading section track 5.2 is equivalent to the deviation effect of the trolley), indicating that the use of a plane unloading section track 5.2 in this embodiment will not affect the unloading process of the trolley.

[0081] Preferably, the unloading section track 5.2 in this embodiment is made of a material with a hardness of HB=380-420 and is obtained by CNC blanking (i.e., the unloading section track in this embodiment is obtained by CNC machining of a flat plate). The hardness value of the unloading section track 5.2 in this embodiment is consistent within the cross section, and its wear resistance is much higher than the existing technology of surfacing wear-resistant layer plus multi-point bending track, and can be achieved without replacement for 1.5-2 years. Preferably, the unloading section track in this embodiment is made of 70mm thick wear-resistant alloy steel.

[0082] Furthermore, the unloading section track 5.2 can ensure the consistency of the height value of each point of the inner and outer unloading section tracks 5.2 with the theoretical value through CNC cutting, and the deviation can be controlled within ±0.05mm, which effectively prevents the unloading phase difference between the inner and outer wheels 1.1 of the trolley 1, thereby causing the trolley 1 to swing violently (that is, the inner and outer unloading openings are inconsistent due to the height position deviation of the inner and outer wheels, and the inner and outer wheels are pulled and stalled), which in turn causes damage to the joint bearings or shearing accidents caused by the connecting bolts at the hinge position due to loosening caused by swinging.

[0083] Preferably, the top surface of the unloading section track 5.2 needs to be rounded to prevent the sharp corners of the unloading section track from scratching the wheel tread.

[0084] Furthermore, since the unloading section track 5.2 is in the form of a plate, its thickness is inconsistent with the waist thickness of the entry section track 5.1 and the return section track 5.3 (referring to the structural form of the entry section track and the return section track in the prior art), the unloading section track 5.2 in this embodiment is connected to the docking track through a docking assembly. The docking track in this embodiment is the entry section track 5.1 or the return section track 5.3; Fig.12 As shown ( Fig.12 The middle docking track is the return track (5.3), and the docking assembly includes two clamping plates 18 and a cushioning group arranged opposite to each other. The connection end of the unloading track 5.2 is placed between the two clamping plates 18 and fastened by a bolt assembly. The cushioning group is padded on both sides of the waist of the connection end of the docking track and then placed between the two clamping plates 18, and then fastened by a bolt assembly. Specifically, the cushioning group includes a gasket 19 and a pad 20, wherein the pad 20 is arranged against the waist of the docking track, and the gasket 19 is arranged against the clamping plate 18. By adding or removing gaskets 19, the outermost gasket 19 is flush with the side of the unloading track 5.2, ensuring the stability of the connection between the unloading track 5.2 and the docking track and aligning the two along the longitudinal center line.

[0085] Preferably, the present embodiment further includes a permanent marking point 15 disposed on the discharge hopper 8, the permanent marking point 15 being flush with the track surface of the lowest position marking point of the discharge section track 5.2, and the permanent marking point 15 can be used as a reference point for subsequent replacement of the discharge section track 5.2. Fig.11 As shown, in this embodiment, permanent marking points 15 are provided on the outer wall 8.1 of the discharge hopper and the inner wall 8.2 of the discharge hopper, wherein the permanent marking point 15 on the outer wall 8.1 of the discharge hopper is flush with the track surface setting of the lowest position marking point of the outer discharge section track 5.2, and the permanent marking point 15 on the inner wall 8.2 of the discharge hopper is flush with the track surface setting of the lowest position marking point of the inner discharge section track 5.2, so as to provide reference datum points for the subsequent replacement of the inner or outer discharge section track 5.2, respectively. Preferably, the extension line of the projection line of the two permanent marking points on the XY plane in this embodiment passes through the center line of the ring cooler to ensure the synchronization between the inner and outer discharge section tracks after replacement. The XY plane here is the horizontal plane where the horizontal track is located.

[0086] Specifically, when the unloading section track 5.2 is installed for the first time, the permanent marking point 15 is set flush with the track surface of the lowest position marking point of the unloading section track 5.2; when the unloading section track 5.2 needs to be replaced subsequently, it is only necessary to set the track surface of the lowest position marking point of the replaced unloading section track 5.2 flush with the permanent marking point 15, and then tighten it with bolts; the structural setting in this embodiment solves the problem in the prior art that the dimensional parameters cannot be directly measured due to being blocked by the ring cooler components during maintenance and replacement. Under the condition that the personnel configuration remains unchanged, the replacement time can be shortened from 48 to 72 hours in the prior art to less than 3 hours, which greatly improves the convenience and efficiency of maintenance and replacement.

[0087] Preferably, the unloading track 5 in this embodiment can also use the monitoring method in Example 1 to obtain the running status of the trolley, the working status of the unloading track and the deviation of the trolley, so as to achieve the effect of automatic monitoring and provide effective technical guarantee for the safe production of the ring cooler.

[0088] Preferably, in some embodiments, the entire unloading track may be replaced by a flat plate structure, which can improve the wear resistance of the entire unloading track. The specific settings of the entry section track and the return section track one and two can be decided by those skilled in the art based on actual conditions.

[0089] The track system of this embodiment solves the problem of easy crushing and wear of the ring cooler track in the prior art, wherein the cross section of the horizontal track is set to be square and is made of a material with a hardness of HB=380~420. The hardness within the cross section of the horizontal track is consistent, which can effectively solve the problem of track crushing caused by inconsistent hardness at various places in the cross section of the horizontal track in the prior art. The horizontal track 3 in this embodiment can be achieved without replacement for more than 8 to 10 years; the unloading section track 5.2 in the unloading track 5 of this embodiment adopts a flat plate structure to replace the high-quality carbon steel or low-alloy structural steel multi-point bending track plus a welded wear-resistant layer in the prior art. The flat plate also uses a material with a hardness of HB=380~420. The hardness value within the cross section of the unloading section track 5.2 is consistent, and its wear resistance is much higher than the welded layer plus multi-point bending track method in the prior art. The unloading section track in this embodiment can be achieved without replacement for 1.5 to 2 years, which solves the problem of the unloading section track being easily worn by mineral materials in the prior art.

[0090] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A discharge track of a ring cooler, characterized in that: The unloading track (5) comprises an unloading section track (5.2) for realizing the downward turning and unloading of the trolley (1); the outer side surface and the inner side surface of the unloading section track (5.2) are both planes; and the hardness values ​​at various locations in the cross section of the unloading section track (5.2) are consistent.

2. The unloading track of the annular cooler according to claim 1, characterized in that: Permanent marking points (15) are provided on both the outer wall (8.1) of the discharge hopper and the inner wall (8.2) of the discharge hopper, wherein the permanent marking point (15) on the outer wall (8.1) of the discharge hopper is flush with the track surface of the lowest position marking point of the outer discharge section track (5.2), and the permanent marking point (15) on the inner wall (8.2) of the discharge hopper is flush with the track surface of the lowest position marking point of the inner discharge section track (5.2).

3. The unloading track of the annular cooler according to claim 2, characterized in that: The extended line of the projection line of the permanent marking point (15) on the outer wall (8.1) of the discharge hopper and the permanent marking point (15) on the inner wall (8.2) of the discharge hopper on the XY plane passes through the center line of the ring cooler.

4. The unloading track of the annular cooler according to claim 1, characterized in that: The sharp corners of the top surface of the unloading section track (5.2) are rounded.

5. The unloading track of the annular cooler according to any one of claims 1 to 4, characterized in that: The unloading track also comprises an entry track (5.1) and at least one return track. The outer side surface and the inner side surface of the entry track (5.1) and / or the return track are both planes and the hardness values ​​at various locations in the cross section are consistent.

6. A track system for a ring cooler, characterized in that: It comprises a horizontal track (3) and a discharge track (5) as claimed in any one of claims 1 to 5, wherein the cross section of the horizontal track (3) is square and the hardness value at each location in the cross section is consistent.

7. The track system of the ring cooler according to claim 6, characterized in that: A mounting base plate (16) is provided at the lower part of the horizontal track (3), a mounting blind hole is provided at the bottom surface of the horizontal track (3), and a mounting through hole is provided on the mounting base plate (16); a connecting piece is arranged in the mounting through hole and the mounting blind hole to connect the horizontal track (3) and the mounting base plate (16); the mounting base plate (16) is fixed on the horizontal track support beam (4), and an end of the mounting through hole away from the horizontal track (3) is blocked by the upper surface of the horizontal track support beam (4).

8. The track system of the ring cooler according to claim 7, characterized in that: It also includes a limiting pressure block (17), a limiting groove is arranged on the side of the horizontal track (3), the limiting pressure block (17) is inserted into the limiting groove, and the limiting pressure block (17), the mounting base plate (16) and the horizontal rail support beam (4) are fixed together by a bolt assembly.

9. The track system of the ring cooler according to claim 6, characterized in that: The horizontal track (3) and the unloading section track (5.2) are both made of materials with a Brinell hardness of 380 to 420.

10. The track system of the ring cooler according to claim 6, characterized in that: Between two adjacent sections of horizontal rails (3), a protruding portion of one section of horizontal rail (3) is inserted into a recessed portion of another section of horizontal rail (3) to achieve docking between the two adjacent sections of horizontal rails (3).

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